JP4193679B2 - Mounting device for steering operation device - Google Patents

Description

  The present invention relates to an attachment device for attaching a steering operation device mounted on a vehicle to a vehicle body, and in particular, attaches the steering operation device to the vehicle body in a state where the operation position of an operation member for performing a steering operation can be changed. It is related with the attachment apparatus for.

  A vehicle steering device can be broadly divided into an operation unit provided with an operation member such as a steering wheel and operated by a driver, and a turning unit provided with a mechanism for turning wheels. The operation unit is configured mainly with a steering operation device including, for example, an operation member and a holding device (for example, a steering column) that holds the operation member. The normal steering device has a structure in which an operating force applied to the operating member is input from the steering operating device to the steered portion via a rack and pinion mechanism or the like. Recently, a steering device in which the wheels are steered by the driving force of a driving source provided in the steered portion without depending on the operating force applied to the operating member has been studied. This steering device is a so-called steer-by-wire type steering device, in which the operation amount of the operation member is detected as an electric signal in the steering operation device, and the steered portion is controlled and operated according to the detected operation amount. This is a steering device having such a structure as to be allowed to move.

Regardless of the type of steering device, the steering operation device is attached to the vehicle body, specifically, for example, to the reinforcement of the instrument panel by a predetermined attachment device. On the other hand, it is desired that the position of the operation member, that is, the operation position can be adjusted to an appropriate position for the driver according to the physique of the driver. A mechanism that can be changed to an arbitrary position is provided in any part of the steering device. As a technique in which the operation position changing mechanism is provided in the attachment device, there is a technique described in the following patent document.
JP 2000-16305 A JP 2000-16306 A JP 2001-130417 A JP 2001-130417 A JP 2002-19621 A Japanese Patent Laid-Open No. 2002-220061

  In the technique described in the above-mentioned patent document, there is a steering operation device configured to include a steering wheel as an operation member and a steering column as a holding device that holds the steering wheel (hereinafter sometimes simply referred to as “column”). The bracket is attached to the vehicle body in a state where the bracket provided on the column and the bracket provided on the vehicle body are engaged. More specifically, the bracket on the column side is provided with two elongated holes extending in the axial direction of the column, and the bracket on the vehicle body side is provided with two elongated holes extending in a direction intersecting with the direction in which the elongated hole extends, The steering operation device is attached to the vehicle body by inserting an engagement pin through each of the long holes on the column side and the long holes on the vehicle body side. Therefore, the steering operation device is allowed to translate in the axial direction of the column, translate in the direction intersecting the direction and tilt, and the steering wheel has its own operation position in the front-rear position, vertical position, tilt position. Any of (inclination angle) can be arbitrarily adjusted. That is, it is possible to adjust the operation position with a very high degree of freedom.

  However, the attachment device of each of the above techniques is too difficult to adjust because the degree of freedom in adjusting the operation position is too high. Specifically, for example, when the steering wheel is simply moved up and down, the steering wheel tilts unexpectedly, and conversely, when the steering wheel is tilted to a certain state, It moves to an unexpected position in the direction. In that respect, each of the attachment devices is not practical. The vehicles currently on the market are equipped with a telescopic mechanism that adjusts the position in the column axis direction and a tilt mechanism that adjusts the tilting position, but two practical adjustment mechanisms are possible. It is. In other words, it seems that there is no need to deliberately obtain a degree of freedom of adjustment of two or more unless it is too much.

  In addition, in the attachment device of each of the above technologies, for example, in the case where the steering wheel is being gripped and is to be adjusted in the vertical direction, the engagement portion of the both brackets, more specifically, an elongated hole and an engagement pin, Further, there is a problem that the engagement position of the steering wheel or the deadlock occurs, and the operation position of the steering wheel cannot be adjusted smoothly. That is, each said attachment apparatus is not practical also in the point.

  The above is merely an example, but there is actually no mounting apparatus of the prior art that can sufficiently satisfy the practicality. The present invention has been made in view of such circumstances, and the present invention is an attachment device for attaching a steering operation device to a vehicle body in a state where the operation position of an operation member can be adjusted, and is excellent in practicality. It is an object to provide a mounting device.

The present invention relates to a mounting device that allows movement of each of two locations of a steering operation device, and more specifically, two guide mechanisms that allow movement of each of these two locations along each of two parallel tracks. In order to solve the above problems, the steering device mounting device according to the present invention is connected to both the steering operation device and the vehicle body so as to be at least relatively rotatable. A guide mechanism configured as a link mechanism having two links that are linked and interlocked with each other so that they can rotate at least relative to each other, and that maintains the positions of the two locations on the two tracks at the predetermined relative positions. A mechanism is provided. Further, the steering device mounting device according to another aspect of the present invention includes two devices that are connected to both the steering operation device and the vehicle body so as to be at least relatively rotatable, and are connected to each other so as to be at least relatively rotatable. When a force is applied to move one of the two locations in one direction along one of the two trajectories, the other of the two locations depends on the force. A guide assisting mechanism for applying a force for moving in the same direction as the one direction along the other of the two tracks is provided.

Effects and effects of the invention

  The former of the above-mentioned guide assist mechanisms can be referred to as a guided portion positional relationship maintaining mechanism (hereinafter sometimes simply referred to as “positional relationship maintaining mechanism”), as will be described in detail later. The mechanism is a mechanism that exhibits the function of maintaining the positional relationship between the two guided portions that are parts guided by the guide mechanism in the steering operation device, and if this mechanism is used in the attachment device, When the steering operation device is moved along the direction in which the track extends, the steering operation device can be tilted to an angle corresponding to the movement position. As a result, it is possible to adjust the operation position according to predetermined rules and rules, and a practical mounting device is realized.

  The latter of the above-described guide assist mechanisms can be referred to as a guided portion same direction movement assist mechanism (hereinafter sometimes simply referred to as “the same direction movement assist mechanism”), as will be described in detail later. This mechanism exerts the function of assisting the steering operation device so that the two guided portions move in the same direction. When this mechanism is employed in the mounting device, one guided portion moves in one direction. Even so, since the other guided portion is prevented from moving in the reverse direction, it is difficult for the guide mechanism to turn or deadlock, and smooth movement of the steering operation device is ensured. As a result, the operation position of the operation member can be smoothly adjusted, and a practical attachment device is realized.

  Note that both the positional relationship maintaining mechanism and the same-direction movement assist mechanism may be realized by a single guide assist mechanism. That is, as will be described in detail later, in a specific aspect of the guide assist mechanism, it is possible to adopt an aspect that exhibits both of the two functions. The operation and effect of the present invention will be described in more detail in the following [Aspect of the Invention] section.

Aspects of the Invention

In the following, some aspects of the invention that can be claimed in the present application (hereinafter sometimes referred to as “claimable invention”, a concept including the present invention) will be exemplified and described. As with the claims, each aspect is divided into sections, each section is numbered, and is described in a form that cites the numbers of other sections as necessary. This is merely for the purpose of facilitating the understanding of the claimable inventions, and is not intended to limit the combinations of the constituent elements constituting those inventions to those described in the following sections. In other words, the claimable invention should be construed in consideration of the description accompanying each section, the description of the embodiments, etc., and as long as the interpretation is followed, another aspect is added to the form of each section. In addition, an aspect in which constituent elements are deleted from the aspect of each item can be an aspect of the claimable invention. In each of the following items, the combination of items (1) and (5) corresponds to claim 1, and the combination of items (2) and (5) corresponds to claim 2. Further, the technical feature of (3) is added to claim 1 or claim 2, and the technical feature of (4) is added to any one of claims 1 to 3. In addition to the technical feature of (6) in any one of claims 1 to 4, the present invention is added to claim 5, and in any of claims 1 to 5 (7). The technical features of the items are added to the sixth aspect.

(1) An attachment device for attaching a steering operation device provided with an operation member for performing a steering operation to a vehicle body so that an operation position of the operation member can be adjusted,
(a) a first guided portion and a second guided portion provided apart from each other in the steering operating device; and (b) two first parallel portions provided in the vehicle body and extending in a set direction. Two of the first guide portion and the second guide portion that allow movement of each of the first guided portion and the second guided portion along each of the tracks, each including one each. A guide mechanism;
A guide assisting mechanism for maintaining the position of the first guided portion in one of the two first tracks and the position of the second guided portion in the other of the two first tracks in a predetermined relationship; Mounting device.

  The “guide assist mechanism” in the aspect described in this section is a mechanism that exhibits a function of maintaining a positional relationship between two guided portions that are parts to be guided in the steering operation device. It can be called a positional relationship maintaining mechanism. The positional relationship maintaining mechanism is, for example, a mechanism that positions the other of the second guided portions at a predetermined position on the other of the first tracks corresponding to one position of the guided portions on one of the first tracks. be able to. If the positional relationship maintaining mechanism is employed in the attachment device, for example, when the steering operation device is moved along the direction in which the track extends, the steering operation device can be tilted to an angle corresponding to the movement position. Although the degree of freedom in adjusting the operation position of the operation member is reduced, the operation position can be adjusted in accordance with predetermined rules and rules. The attachment device provided with the positional relationship maintaining mechanism is a practical device in that respect.

  The “steering operation device” is a main device that constitutes an operation unit in a steering device that is divided into an operation unit and a steering unit. For example, when the operation member is a steering wheel, it may be configured to include the steering wheel and a steering column as a holding device that holds the steering wheel. In this case, the column includes a steering shaft (hereinafter simply abbreviated as “shaft”) and a steering tube (hereinafter simply abbreviated as “tube”) that rotatably holds the column. Can be. In that column, a steering wheel is attached to one end of the shaft. The steering operation device may constitute a normal steering device such as a power steering, or may constitute the aforementioned steer-by-wire type steering device. When the steering operation device constitutes a normal steering device, for example, the other end portion of the shaft is connected to the steered portion via an intermediate shaft. Can do. In the case of constituting a steer-by-wire type steering device, a sensor for detecting an operation amount (rotation amount, rotation angle, etc.) of the steering wheel, a reaction force motor for applying an operation reaction force to the steering wheel, etc. It is possible to comprise so as to include the provided reaction force application mechanism.

  For example, when the steering operation device is configured to include a steering column, a bracket (attached bracket) for attaching the steering operation device to the vehicle body is provided on the tube of the column. To attach the steering operation device to the reinforcement (hereinafter, abbreviated as “instrument panel R / F”) of the instrument panel (hereinafter abbreviated as “instrument panel”), which is the mounting part on the vehicle body side The bracket (mounting bracket) may be provided, and the mounted bracket and the mounting bracket may be engaged with each other. In this aspect, the mounted bracket or a part thereof is a “guided portion”, and the “guide portion” is configured including the mounting bracket or a part thereof.

  The specific structure of the “guide mechanism” is not particularly limited. For example, it may be configured to include a guide rail and a slide that moves while being guided by the guide rail. Further, as a simple guide mechanism, for example, it is possible to provide a long hole in one of the mounted bracket and the mounting bracket and provide an engaging pin that engages with the long hole in the other. In that case, the guided portion is configured to include one of the elongated hole and the engagement pin, and the guide portion is configured to include the other. In the aspect of this section, two guide mechanisms are provided, one of which includes a “first guided portion” and a “first guide portion”, and the other includes a “first guide portion”. The “two guided portions” and the “second guide portion” are included.

  The “first trajectory” does not mean a substantive thing, but is a concept such as a trajectory and a route along which the guided portion moves while being guided by the guide portion. The two first trajectories need to be parallel to each other, but it is not an essential requirement that they are linear. The relationship may be a curved trajectory, for example, an arc of each of two concentric circles centered on an arbitrary point. Furthermore, a straight part and a curved part may be included. In the aspect described in this section, each of the two guide mechanisms has a structure in which the first track is formed.

  According to the “guide assist mechanism” in the aspect described in this section, the position of the first guided portion on the first track and the position of the second guided portion on the first track are determined. Maintained. In the “determined relationship” here, the position of the other guided portion is uniquely determined based on some rule in accordance with the position of one guided portion at each position on the first track. Such a relationship is included. For example, a case where the relative positional relationship between the positions on the first trajectory is constant or substantially constant is included. If the two guided portions maintain a constant or substantially constant relative positional relationship and move on the respective first tracks, when the steering operation device moves in the direction in which the first track extends, It is possible to realize movement without significant tilting. The determined relationship includes, for example, a case where the ratio of the movement distance of one guided portion to the movement distance of the other guided portion is constant or substantially constant. In such a case, when the steering operation device moves in the direction in which the first track extends, it is possible to realize movement with tilting based on a predetermined rule according to the movement position.

  The specific configuration of the guide assist mechanism in this section is not particularly limited. For example, a link mechanism as described in detail later, or a gear mechanism, a mechanism in which a gear and a link are combined, or the like may be mainly used. Since the link mechanism, the gear mechanism, and the like have pure mechanical structures, a simple mounting device can be realized by adopting them. Further, the position of the guided portion is detected, and the guided portion is moved to a position where the positional relationship becomes a predetermined relationship by some power based on the detection result, that is, electronic control. It may have a structure that is actuated by, for example.

(2) An attachment device for attaching a steering operation device provided with an operation member for performing a steering operation to a vehicle body so that an operation position of the operation member can be adjusted,
(a) a first guided portion and a second guided portion provided apart from each other in the steering operating device; and (b) two first parallel portions provided in the vehicle body and extending in a set direction. Two of the first guide portion and the second guide portion that allow movement of each of the first guided portion and the second guided portion along each of the tracks, each including one each. A guide mechanism;
When a force is applied to move one of the first guided portion and the second guided portion in one direction along one of the two first tracks, the first guided portion is responsive to the force. And a guide assisting mechanism for applying a force that causes the other of the guide portion and the second guided portion to move in the same direction as the one direction along the other of the two first tracks.

  The guide assist mechanism in the aspect described in this section is a mechanism that functions to assist the steering operation device so that each of the two guided portions moves in the same direction along each of the two first tracks. It can be called a guided portion same-direction movement assist mechanism. If this same-direction movement assist mechanism is employed, for example, when the steering operation device is moved along the direction in which the first track extends, a biased force is applied to the steering operation device, so that only one guided portion is connected. Even if it is moved in the direction, since the force to move the other guided part in the same direction is applied, the guide mechanism is unlikely to turn or deadlock, and the steering operation device can move smoothly. Secured. Therefore, according to the attachment device provided with the same-direction movement assist mechanism, the operation position of the operation member can be adjusted smoothly, and the attachment device becomes a practical device in that respect.

  The configuration of the “steering device” in the mode described in this section, the mounting mode of the steering device to the vehicle body, the specific configuration of the “guided part” and “guide unit”, “guide mechanism”, “the first track” Are interpreted in the same manner as those in the previous embodiment, and the description thereof is omitted here.

  In the “guide auxiliary mechanism” in the aspect described in this section, when a force is applied to the steering operation device in a direction to move one of the two guided portions in one direction along the first track, A mechanism is included that applies a force in a direction to move the other of the two guided portions in the same direction along its first track to the steering operating device. In other words, for example, when a force that tilts the steering operation device is applied, a force that tilts the steering operation device in the opposite direction is applied to prevent or suppress the tilt of the steering operation device. The force applied by the guide assist mechanism may be applied to the guided portion, or may be applied to any location other than the guided portion of the steering operation device. The force to be applied and the force to be applied are opposite to each other, and it is desirable that the force is balanced so that the steering operation device just prevents the tilting of the steering operation device. That is not an essential requirement. A mode in which a force having a magnitude that substantially suppresses tilting due to the applied force acts as the applied force may be employed.

  The specific configuration of the guide assist mechanism in this section is not particularly limited. For example, as in the case of the previous section, for example, a pure mechanical structure such as a link mechanism and a gear mechanism described later can be used. Moreover, the thing of the structure act | operated by electronic control as mentioned above may be used.

  (3) Each of the two first trajectories extends along arcs with different radii centered on one virtual point that is virtually set in the item (1) or (2) The mounting device described.

  The mode described in this section is a mode in which the movement of the steering operation member along the first track realizes the movement along the circular arc track instead of the linear motion. In the aspect of this section, for example, when the steering operation device is configured to include a steering column, by setting a virtual point on the extension line of the axis of the column, the steering operation device is as if the virtual It can be moved as if only tilting around the point. According to this aspect, for example, even in a steer-by-wire type steering operation device having a relatively short length, the operation member can be moved so as to draw the same locus as that by the tilt mechanism of a normal steering device. It is possible to make adjustments with less discomfort. The “virtual point” may be located within the steering operation device or may exist outside the steering operation device.

  (4) Each of the two guide mechanisms moves along each of the two second tracks that intersect with each of the two first tracks of each of the first guided portion and the second guided portion. The mounting device according to any one of (1) to (3), wherein the mounting device is further allowed.

  According to the aspect described in this section, the degree of freedom in adjusting the operation member can be increased. For example, when the first track and the second track are both parallel to a certain plane, the degree of freedom of adjustment along that plane can be improved. Specifically, for example, the operation position of the operation member in the vertical direction is adjusted by moving the steering operation device along the first track, and the operation member is moved by moving the steering operation device along the second track. It is possible to adjust the operation position in the front-rear direction.

  Each of the “two second tracks” in this section is a track that intersects the first track defined by each of the guide mechanisms. Although the extending direction of each of the two second tracks is not particularly limited, it is desirable that these directions be parallel to each other. Ultimately, the two second trajectories may be positioned on a straight line. Although the specific configuration of the two guide mechanisms in the aspect of this section is not particularly limited, for example, a long hole extending in the direction along the first track is provided in the guide portion, and the length of the guided portion is long. A long hole extending in a direction intersecting with the hole may be provided, and an engagement pin may be inserted into both of the long holes. In this structure, for example, the direction in which the elongated hole provided in the guided portion extends can be the direction in which the second track extends.

(5) The guide auxiliary mechanism is
Each of the link mechanisms includes two links that are connected to both the steering operation device and the vehicle body so that they can rotate relative to each other, and are linked so that they can rotate relative to each other. The mounting device according to any one of (4).

  The mode described in this section is a mode in which the guide auxiliary mechanism is a link mechanism. Since the link mechanism is a purely mechanical mechanism, a simple attachment device is realized. Each of the “two links” in this section is connected to the steering operation device and the vehicle body so as to be rotatable relative to each other, but the connection position in the steering operation device and the vehicle body is not particularly limited. For example, one of the connected portions may be a guided portion or a guide portion. In addition, the phrase “connected at least so as to allow relative rotation” as used in this section means that the connection is possible only for relative rotation, and the connection location is movable in addition to relative rotation. It is a concept that includes the case of being connected in a state. Specifically, it is possible to allow relative rotation and movement of the connecting portion by providing a long hole in the link and a structure in which a pin is inserted into the long hole. By employing the link mechanism having the configuration described in this section, for example, the above-described guided portion same-direction movement assist function can be easily exhibited by the guide assist mechanism.

(6) The link mechanism is
In each of the two links, the position of the connection portion between the steering operation device and one of the vehicle bodies is fixed and the position of the connection portion between the steering operation device and the other of the vehicle body is fixed. Are allowed to fluctuate in accordance with the interlocking of the two links, the positions of the two links are fixed at one of the connecting points, and the position at the other link is the two links. The mounting device according to item (5), which has a structure that is allowed to fluctuate in accordance with the interlocking.

  The aspect described in this section is an aspect in which the configuration of the link mechanism is limited to a more specific one. If the link mechanism having the above-described configuration is employed, it is possible to determine the tilt position accompanying the movement of the steering operation device along the first track. That is, the relative positional relationship between the two guided portions on the first track is uniquely determined according to the position of one of the guided portions on the first track. Therefore, by employing the link mechanism having the above-described configuration, for example, the above-described guided portion positional relationship maintaining function can be easily exhibited by the guide assist mechanism.

  (7) The attachment device according to (5) or (6), wherein the link mechanism includes a link ratio changing mechanism that changes a link ratio of the two links.

  According to the aspect described in this section, the aspect of tilting accompanying the movement of the steering operation device along the first track can be easily changed. For example, when it is set to tilt in a certain direction when it is moved in a certain direction, it is possible to change the degree of tilting or to change the tilting direction. That is, it is possible to arbitrarily change the “defined positional relationship between the first guided portion and the second guided portion” in the guided portion positional relationship maintaining mechanism described above. For example, it becomes possible to change the discipline and rules of tilting accompanying the movement of the steering operation device. Further, according to the aspect described in this section, it is possible to arbitrarily change the ratio of the magnitudes of “applied force” and “applied force” in the guided portion same-direction movement assist mechanism described above.

  When one link has three connection points, specifically, there are three connection points: a connection point with the vehicle body, an engagement point with the steering operation device, and a connection point with the other link. In such a case, the link ratio can be changed by changing the distance between any of the connection points. In other words, the concept of “link ratio” referred to in this section includes the ratio of the distances between the corresponding links of the two links.

  In an aspect in which the configuration of the link mechanism described above is limited to a more specific one, for example, “an inter-link connection position that fixes the position of the two links to each other at the one link so as to be arbitrarily changeable. If the “change mechanism” is provided, the link connecting position changing mechanism is a link ratio changing mechanism. More specifically, for example, an engaging pin is erected on one link, a long hole is provided on the other link, and the connecting portion is configured so that the engaging pin is inserted through the long hole. In some cases, the standing position of the engagement pin may be arbitrarily changed.

  Hereinafter, some embodiments of the present invention and modifications thereof will be described in detail with reference to the drawings. In addition to the following examples, the present invention is implemented in various modes including various modes modified and improved based on the knowledge of those skilled in the art, including the mode described in the above [Mode of Invention]. be able to.

<First embodiment>
FIG. 1 shows a side view of the steering operation device and the mounting device of the first embodiment, and FIG. 2 shows an assembly drawing of the mounting device. The steering operation device 10 includes a steering wheel 12 and a steering column 14 (hereinafter, may be abbreviated as “column 14”) that rotatably holds the steering wheel 12. The column 14 includes a steering tube 16 (hereinafter sometimes abbreviated as “tube 16”) and a steering shaft 18 (hereinafter sometimes abbreviated as “shaft 18”) rotatably held therein. It is configured to include. A steering wheel 12 is attached to one end portion of the shaft 18 extending from the end portion of the tube 16. The present steering operation device 10 constitutes a so-called steer-by-wire type steering device, and the other end portion of the shaft 18 does not extend from the tube 16 and is not connected to the steered portion of the steering device. The steering operation device 10 includes an operation reaction force applying device (a reaction force motor or the like) that is a component unique to the steering device, and an operation angle detection device (an encoder or the like) that detects the operation angle of the steering wheel 12. (Not shown).

  The attachment device 20 includes two attachment brackets 30 a and 30 b provided in the steering operation device 10, an attachment bracket 32 attached to the vehicle body, and two engagements for engaging the attachment bracket 30 and the attachment bracket 32. Pins 34a, 34b, two links 36a, 36b connected to the two engaging pins 34a, 34b, stopper levers 38a, 38b and stopper levers 38a, 38b screwed into the two engaging pins 34a, 34b, respectively. The connecting bar 40 is configured to include various connecting pins for connecting these components and a retaining ring.

  The mounted brackets 30 a and 30 b are generally formed in a C channel shape, and are fixed to the steering operation device 10 by joining the tip of the lip portion to the tube 16. Each of the mounting brackets 30a and 30b is provided with guide holes 50a and 50b, which are long holes that are coaxially drilled, on both side surfaces facing each other in parallel. The mounting bracket 32 has a generally hat-shaped cross section, and the steering operating device 10 is accommodated between the standing wall portions facing each other in parallel. The internal dimensions of the standing wall portion of the mounting bracket 32 are slightly larger than the external dimensions of the both side surfaces of the brackets to be mounted 30a and 30b, and the steering operation device 10 is tightly accommodated in the internal space of the mounting bracket 32. It has become so. The mounting bracket 32 is attached to an instrument panel R / F (not shown) at the heel portion. Specifically, the fastening material is inserted and attached to the four fastening holes 52 formed in the collar portion. The two standing wall portions of the mounting bracket 32 are provided with two guide holes 54 a and 54 b that are coaxially formed as long holes.

  The guide holes 50a, 50b of the mounted brackets 30a, 30b are in the axial direction of the column 14, that is, generally in the front-rear direction (even if the column 14 is mounted inclined, it is treated as the front-rear direction in this specification). The guide holes 54a and 54b of the mounting bracket 32 are formed so as to intersect with the guide holes 50a and 50b in a state where the steering operating device 10 is attached, that is, in a generally vertical direction (the column 14 is Even in the case of being attached at an inclination, it is formed so as to extend in the present specification as a vertical direction). The guide hole 50a and the guide hole 54a are engaged by inserting the engaging pin 34a, and the guide hole 50b and the guide hole 54b are engaged by inserting the engaging pin 34b. The inner width dimension of each guide hole 50a, 50b, 54a, 54b is slightly larger than the outer diameter dimension of the engaging pins 34a, 34b, so that the mounted brackets 30a, 30b and the mounting bracket 32 are almost all. Engage without rattling. One end portions of the engaging pins 34a and 34b are head portions 56a and 56b, and the head portions 56a and 56b are locked to the standing wall portion of the mounting bracket 32 (the standing wall on the opposite side in FIG. 2). And the engagement pins 34a and 34b are prevented from rotating.

  In the attachment device 20 of the present embodiment, a link mechanism is configured including two links 36a and 36b. Each of the links 36a and 36b is provided with three holes. Each of the two links 36a, 36b has a retaining ring 64a, 62b in a state in which the pivot pins 62a, 62b fixed to the standing wall portion of the mounting bracket 32 are inserted into the central round holes 60a, 60b of the three holes. By being fastened with 64b, it is attached to the mounting bracket 32 so as to be relatively rotatable. A spacer 66a is interposed between one end of the link 36a and the mounting bracket 32, and an engagement pin 34a is inserted into the long hole 68a and the spacer 66a provided in the one end. In addition, the spacer 66b is interposed between one end of the link 36b and the mounting bracket 32, and the engaging pin 34b is inserted into the long hole 68b and the spacer 66b provided in the one end. Has been. With such a connection structure, each of the links 36a and 36b is attached to each of the attached brackets 30a and 30b so as to be relatively rotatable. Further, a connecting pin 72 is inserted into a round hole 70a provided at the other end of the link 36a and a long hole 70b provided at the other end of the link 36b, and is fastened by a retaining ring 74. Thus, the links 36a and 36b can be rotated relative to each other. The inner diameter or inner width of the round holes 60a, 60b, 70a and the long holes 68a, 68b, 70b is slightly smaller than the outer diameter of the support pins 62a, 62b, the engaging pins 34a, 34b, or the connecting pin 72. Because of the large dimensions, this link mechanism operates almost without rattling.

  Ends of the engaging pins 34a, 34b opposite to the heads 56a, 56b are male screw portions 80a, 80b in which male screws are formed. The stopper levers 38a and 38b are provided with female screw holes 82a and 82b. The male screw portions 80a and 80b of the engaging pins 34a and 34b and the female screw holes 82a and 82b are mutually connected. It is screwed. The links 36a, 36b and the mounting bracket 32 are sandwiched between the stopper levers 38a, 38b and the heads 56a, 56b of the engaging pins 34a, 34b, so that the mounting bracket 32 of the brackets 30a, 30b is mounted. And the operation of the link mechanism are prohibited, and the operation position of the steering operation device 10, that is, the steering wheel 12, is fixed. More specifically, spring rings 84a and 84b formed of a relatively thin plate material are interposed between each of the links 36a and 36b and each of the stopper levers 38a and 38b, and are attached by their elastic force. The bracket 32 and the like are sandwiched.

  Each of the stopper levers 38a and 38b is provided with round holes 86a and 86b, and each of the round holes 86a and 86b and round holes 88a and 88b provided at both ends of the connecting bar 40 are connected pins 90a and 90b. Further, the stopper levers 38a and 38b and the connecting bar 40 are connected to each other so as to be relatively rotatable by being connected by the retaining rings 92a and 92b. By this connecting mechanism, the stopper levers 38a and 38b are rotated in the same direction in synchronization with each other. The stopper lever 38 a is provided with an operation lever portion 96, and the steering operation device 10 is fixed and released by operation of the operation lever portion 96. More specifically, the operation position of the steering wheel 12 is fixed by the clockwise lever operation in FIG. 1, and the fixation is released by the counterclockwise lever operation, and the operation position can be adjusted. That is, the stopper mechanism in the mounting apparatus 20 includes the stopper levers 38a and 38b, the connecting bar 40, and the like.

  FIG. 3 shows the mounting device 20 of this embodiment with the stopper mechanism and the like removed. The movement allowed for the steering operation device 10 will be described with reference to this figure. Each of the two mounted brackets 30a and 30b provided in the steering operation device 10 is extended in the direction in which the guide holes 54a and 54b extend by the engaging pins 34a and 34b and the guide holes 54a and 54b provided in the mounting bracket 32 ( Movement along a generally vertical direction) is allowed. That is, each of the mounted brackets 30a and 30b is a first guided portion and a second guided portion, and each includes one of the guide holes 54a and 54b and the engaging pins 34a and 34b. Guided by one guide portion and a second guide portion. That is, the first guide mechanism 100a configured to include the first guided portion and the first guide portion, and the second guide mechanism 100b configured to include the second guided portion and the second guided portion. These two guide mechanisms 100a and 100b are provided. The guide holes 54a and 54b define the trajectory of each of the mounted brackets 30a and 30b, and each of the guide mechanisms 100a and 100b is determined by the respective guide holes 54a and 54b. The movement of each of the mounted brackets 30a and 30b along the track is allowed.

  As described above, the attachment device 20 includes the link mechanism 102 including the two links 36a and 36b. Without this link mechanism 102, each of the mounted brackets 30a and 30b is allowed to move freely along the first track, and the steering operation device 10 can be arbitrarily tilted. is there. However, in the present attachment device 20, due to the presence of the link mechanism 102, each of the mounted brackets 30a and 30b is defined in a relative positional relationship with each other on the first track, and maintains the determined positional relationship with each other. Only movement at is allowed. That is, when the steering operation device 10 is moved in the vertical direction, the steering operation device 10 takes an inclined posture determined according to the movement position. As shown in FIG. 4, in the present attachment device 20, the steering operation device 10 is allowed to move up and down in a substantially parallel state (strictly, there is a slight inclination during the movement). Become. That is, the link mechanism 102 has a function of maintaining the positional relationship on the first track of the mounting brackets 30a and 30b which are the first guided portion and the second guided portion, that is, the guided portion position. It is a guide auxiliary mechanism having a relationship maintaining function.

  Next, consider a case where, for example, a force is applied to move the mounted bracket 30a upward by lifting the steering wheel 12 upward. In this case, the link 36a rotates counterclockwise about the support shaft pin 62a, and accordingly, the link 36b rotates clockwise about the support shaft pin 62b, and moves upward with respect to the mounting bracket 30b. A force in the direction of moving in the direction acts. Conversely, when a force is applied to move the mounted bracket 30a in the downward direction, a force in the downward direction is applied to the mounted bracket 30b. As described above, the link mechanism 102 of the mounting device 20 is applied to the other of the mounted brackets 30a and 30b when a force is applied to move one of the mounted brackets 30a and 30b in one direction along the first track. On the other hand, a heading force that moves in the same direction along its first trajectory is applied. As a result, when the steering operating device 10 moves along the first track, the turning, deadlock, and the like are effectively prevented. That is, in the attachment device 20, the link mechanism 102 is a guide assist mechanism having a guided portion same-direction movement assist function.

  A specific connection structure of the link mechanism 102 will be described as follows. Each of the two links 36a and 36b is connected to the mounting bracket 32 in a state where the support shaft pins 62a and 62b are inserted into the round holes 60a and 60b, and can be relatively rotated with respect to the vehicle body. The position of the connection point with the vehicle body side is fixed. Each of the two links 36a and 36b is connected to the mounting brackets 30a and 30b in a state where the engaging pins 34a and 34b are inserted into the elongated holes 68a and 68b. In addition to being able to move, the position of the connecting portion with the steering operation device 10 side of itself is allowed to vary according to the interlocking of the links 36a and 36b. Further, the links 36a and 36b are connected to each other by inserting the connecting pin 72 through the round hole 70a and the long hole 70b. In the connection, the position of the connecting part in the link 36a is fixed, and the connecting part in the link 36b is fixed. The position of is allowed to fluctuate according to the linkage of the links 36a and 36b. With such a connecting structure, the positional relationship maintaining function and the same-direction movement assist function are exhibited.

  Moreover, in this attachment apparatus 20, each of the to-be-attached brackets 30a and 30b is further permitted to move along the guide holes 50a and 50b provided in itself. The extending directions of the guide holes 50a and 50b are parallel to each other, and the guide holes 50a and 50b are positioned on a straight line. The guide holes 50a and 50b define a second track orthogonal to the first track, and each of the mounted brackets 30a and 30b is allowed to move along the second track, As shown in FIG. 5, the steering operation device 10 is allowed to move in the direction (generally in the front-rear direction) along the axis of the column 14. That is, each of the two guide mechanisms 100a and 100b has a structure that further allows movement along the second track of each of the first guided portion and the second guided portion.

  As described above, according to the present mounting device 20, the steering operation device 10 is allowed to move in the vertical direction while maintaining the predetermined tilted posture, that is, with substantially the same tilt angle, and in the front-rear direction. Is allowed to move. By allowing such movement, according to the present attachment device 20, the operation position of the steering wheel 12 can be freely and smoothly adjusted to a sufficiently practical level.

  Next, a modified example of the mounting device 20 will be described. FIG. 6 shows a mounting device as a modified example. In addition, this figure is the same figure as FIG. 3 regarding the attachment apparatus 20, The same code | symbol is attached | subjected about the component equivalent to the component of the said attachment apparatus 20, and description is abbreviate | omitted. The mounting device 120 eliminates the guide holes 50a and 50b provided in the mounted brackets 30a and 30b in the mounting device 20, and replaces them with a round hole (strictly, it is a slightly elongated hole). It is the aspect which provided. With such a configuration, the attachment device 120 is allowed to move along the first track as shown in FIG. 4, but is not allowed to move along the second track as shown in FIG. Although the degree of freedom of adjustment of the operation position of the steering wheel 12 is low in the main mounting device 120, depending on the vehicle, the adjustment by the main mounting device 120 may be sufficient.

  Furthermore, another modification of the mounting device 20 will be described. FIG. 7 shows an attachment device as another modification. In addition, this figure is the same figure as FIG. 1 regarding the attachment apparatus 20, The same code | symbol is attached | subjected about the component equivalent to the component of the said attachment apparatus 20, and description is abbreviate | omitted. The attachment device 130 shown in the figure is a device in which the stopper mechanism in the attachment device 20 is simplified. Specifically, a stopper mechanism is employed in which the stopper lever 38a is changed to the stopper lever 132 and the stopper lever 38b and the connecting bar 40 are deleted. Accordingly, the connecting pins 90a and 90b and the retaining rings 92a and 92b are deleted, the male threaded portion 80b of the engaging pin 34b is eliminated, and the engaging pin 34b is fastened by the retaining ring 132 instead of the spring ring 84b. (See FIG. 2). In the present attachment device 130, the steering operation device 10 is held only on the first guide mechanism 100a side, and the position thereof is fixed. Although the fixing means on the second guide mechanism 100b side has been deleted, the relative position relationship between the brackets 30a and 30b to be mounted is defined by the presence of the link mechanism 102. The steering operation device 10 can be sufficiently fixed only by the fixing means.

<Second embodiment>
A mounting device of the second embodiment is shown in FIG. A mounting device 150 shown in FIG. 8 is a device that employs a gear link mechanism 152 instead of the link mechanism 102 employed in the mounting device 20 of the first embodiment as a guide assist mechanism. FIG. 8 shows a state where the stopper mechanism and the like are removed as in FIG. 3 in the first embodiment. The mounting device 150 also has a similar stopper mechanism, and has a structure assembled by similar connecting pins, retaining rings, and the like. In addition, since it is the same as that of the attachment apparatus 20 of 1st Example about a guide mechanism etc., the same code | symbol is attached | subjected to an equivalent component and those description is abbreviate | omitted.

  In the mounting device 150, two gear links 154a and 154b are arranged instead of the two links 36a and 36b in the mounting device 20 of the first embodiment. The connection structure of the gear links 154a and 154b to the vehicle body side and the connection structure to the steering operation device 10 side are the same as the links 36a and 36b in the first embodiment. Each of the gear links 154a and 154b has gear portions 156a and 156b meshing with each other, and the gear links 154a and 154b are engaged with each other by the meshing of the gear portions 156a and 156b. , 62b is allowed to rotate relative to each other. With such a connection structure, the above-described guided portion positional relationship maintaining function and guided portion same-direction movement assist function are realized.

  In the present mounting device 150, the gear link mechanism 152 allows the mounted brackets 30a and 30b to move along the first track as shown in FIG. That is, according to the present attachment device 150, the steering operation device 10 is allowed to move substantially in the vertical direction while maintaining a constant inclination angle. In this mounting device 150 as well, the steering operation device 10 is allowed to move substantially in the front-rear direction along the second track, which is a track orthogonal to the first track (see FIG. 5).

<Third embodiment>
A mounting device according to a third embodiment is shown in FIG. While the mounting device 20 of the first embodiment maintains the tilt angle of the steering operating device 10 substantially constant when the steering operating device 10 moves along the first track, the mounting device 170 shown in FIG. It is a device that realizes movement with decreasing and increasing tilt angles. FIG. 10 shows a state where the stopper mechanism and the like are removed as in FIG. 3 in the first embodiment. The mounting device 170 also has a similar stopper mechanism, and has a structure assembled by similar connecting pins, retaining rings, and the like. Since the guide mechanism and the like are similar to those of the attachment device 20 of the first embodiment, the same reference numerals are given to equivalent components, and detailed descriptions thereof are omitted.

  The mounting bracket 172 in the mounting device 170 of the present embodiment is also provided with guide holes 174a and 174b, but the guide holes 174a and 174b are not extended linearly. More specifically, it is a long hole extending along concentric circular arcs having different radii around the virtual point Q on the extension line of the column axis CL that is the axis of the steering column 14. Since the guide holes 174a and 174b define the first track and are elongated holes having the above-described shape, each of the brackets 176a and 176b to be mounted follows an arc centered on the virtual point Q. By allowing the movement, the steering operation device 10 is allowed to move along the circular arc trajectory centered on the virtual point Q (sometimes referred to as movement along the first trajectory). Depending on the shape of the guide holes 174a and 174b and the drilling position, the shapes of the brackets 176a and 176b to be engaged with them are different from each other. The mounting brackets 176a and 176b are also provided with guide holes 50a and 50b that define the second track, but they are parallel to the column axis CL but are not positioned in a straight line. Other configurations of the first guide mechanism 178a and the second guide mechanism 178b are the same as those of the attachment device 20 of the first embodiment.

  The attachment device 170 has a link mechanism 182 configured to include two links 180a and 180b. The connection structure of the link mechanism 182 is the same as that in the first embodiment. Unlike the links 36a and 36b in the first embodiment, the two links 180a and 180b have different lengths. Specifically, the distances Ra and Rb between the connection points between the connection points with the support shaft pins 62a and 62b and the connection points with the engagement pins 34a and 34b are different. Since the ratio between the distances Ra and Rb between the connection points is a predetermined value, the inclination angle of the steering operation device 10 is increased or decreased as the steering operation device 10 moves along the first track, As shown in FIG. 11, the steering operation device 10 is generally allowed to tilt about the virtual point Q. In this mounting device 170 as well, the steering operation device 10 is allowed to move substantially in the front-rear direction along the second track, which is a track perpendicular to the first track (see FIG. 5). Also in the attachment device 170, the link mechanism 182 is a guide assist mechanism that exhibits the above-described positional relationship maintaining function and the same-direction movement assist function.

<Fourth embodiment>
The attachment device of the fourth embodiment is shown in FIG. When the steering operation device 10 moves along the first track, the mounting device 20 of the first embodiment determines the inclination angle of the steering operation device 10 according to the movement position according to one fixed rule. The attachment device 200 shown in FIG. 12 can vary the change in the inclination angle by changing the discipline in various ways. FIG. 12 shows a state where the stopper mechanism and the like are removed as in FIG. 3 in the first embodiment. The mounting device 200 also has a similar stopper mechanism, and has a structure assembled by similar connecting pins, retaining rings, and the like. The guide mechanism and the like are substantially the same as the mounting device 20 of the first embodiment except for the fact that the vertical dimension of the mounting bracket 202 is increased and the configuration of the link mechanism 204. Elements are given the same reference numerals, and detailed descriptions thereof are omitted.

  The link mechanism 204 provided in the attachment device 200 includes two links 206a and 206b. The link 206a is configured by combining the main link 208 and the auxiliary link 210. Describing in detail with reference also to the assembly drawings of the links 206a and 206b shown in FIG. 13, the main link 208 includes a main hook portion 212 extending in the axial direction of the column 14 and an auxiliary link extending upward from the main hook portion 212. It can be divided into a connecting collar part 214 and a locking tooth part 216 provided at the lower part of the main collar part 212. The auxiliary link connecting collar 214 is provided with a support shaft hole 218, and the main support 212 is provided with a connecting shaft guide hole 220 extending along an arc centered on the center of the support shaft hole 218. It has been. The auxiliary link 210 has a support shaft pin 222 and a connection shaft pin 224 erected. The support shaft pin 222 is inserted into the support shaft hole 218, and the connection shaft pin 224 is inserted into the connection guide hole 220. In the state, the main link 208 and the auxiliary link 210 are assembled. At the time of assembly, a spacer 226 is fitted to the support shaft pin 222, and the connection shaft pin 224 is inserted into a connection long hole 228 (having the same shape as the connection shaft guide hole 220) provided in the link 206b. It is done. Assembly and fixing are performed by the retaining rings 230 and 232. The auxiliary link 210 is provided with an elastic locking piece 236 that meshes with a locking tooth 234 formed on the locking tooth portion 216 of the main link 208 in a locking piece bracket 238 provided for attaching the elastic locking piece 234. ing. A lower portion of the auxiliary link 210 is an operation collar portion 240.

  The link 206a and the link 206b are connected by a connecting shaft pin 224 included in the link 206a and a connecting long hole 228 provided in the link 206b. The above-described structure of the link 206a constitutes a mechanism for fixing the position where the link 206a and the link 206b are connected to each other so that the position in the link 206a can be arbitrarily changed, that is, an inter-link connection position changing mechanism 250. . As shown in FIG. 14, if the operating collar 240 of the auxiliary link 210 is operated to overcome the locking at the locking teeth 234 of the elastic locking piece 236 and swing the auxiliary link 210, the connecting shaft of the link 206a The connecting shaft pin 224 can be moved to an arbitrary position along the guide hole 220, and if the swinging is stopped at that position, the connecting shaft pin 224 can be fixed at that position. Thereby, the ratio of the distance Pa between the connection points between the interconnection points in the link 206a and the support pin 62a and the distance Pb between the connection points between the connection points in the link 206b and the support shaft, that is, the link The ratio (Pa: Pb) can be changed. That is, the inter-link connection position changing mechanism 250 is an aspect of the link ratio changing mechanism. Incidentally, the mounting device of the other embodiment described above does not include a link ratio changing mechanism.

  By changing the link ratio by the inter-link connection position changing mechanism 250, the movement mode of the steering operating device 10 is changed as follows. For example, if the link ratio is Pa≈Pb, as shown in FIG. 15, the inclination angle of the steering operation device 10 is almost the same as the movement of the steering operation device 10 along the first track (substantially vertical movement). It is possible not to change. Further, for example, if the link ratio is Pa <Pb, as shown in FIG. 16, the steering wheel 12 faces upward as it moves upward along with the movement of the steering operating device 10 along the first track. As described above, the steering operation device 10 can be tilted so that the steering wheel 12 faces downward as it moves downward. That is, the tilting of the steering operation device 10 according to some other discipline is realized. Conversely, if the link ratio is Pa> Pb, for example, as shown in FIG. 17, the steering wheel 12 moves downward as the steering operation device 10 moves upward along the first track. The steering operation device 10 can be tilted so that the steering wheel 12 faces upward as it moves downward. That is, tilting of the steering operation device 10 according to yet another discipline is realized.

  According to this link mechanism 204, in the adjustment of the operation position of the steering wheel 12, it is possible to select an arbitrary one from among a wide variety of adjustment rules, and the present attachment device 200 is highly convenient. It becomes a device. As with the mounting devices of the other embodiments, the mounting device 200 is allowed to move the steering operation device 10 in the substantially front-rear direction along the second track that is a track orthogonal to the first track (see FIG. 5). Also in the attachment device 200, the link mechanism 204 is a guide assist mechanism that exhibits the above-described positional relationship maintaining function and the same-direction movement assist function.

It is a side view which shows a steering operation device and the attachment apparatus of 1st Example of this invention. It is an assembly drawing of the attachment apparatus of 1st Example. It is a side view for demonstrating the guide mechanism with which the attachment apparatus of 1st Example is provided, and a guide auxiliary mechanism. In the attachment apparatus of 1st Example, it is a figure which shows the movement of the steering operating device along a 1st track | orbit. FIG. 6 is a diagram illustrating movement of the steering operation device along a second track intersecting the first track in the mounting device of the first embodiment. It is a modification of the mounting apparatus of 1st Example, Comprising: It is a figure which shows the mounting apparatus in which only the movement of the steering operation apparatus was allowed along the 1st track | orbit. It is another modification of the attachment apparatus of 1st Example, Comprising: It is a figure which shows the attachment apparatus with which the stopper mechanism was simplified. It is a side view for demonstrating the guide mechanism and guide auxiliary | assistance mechanism with which the attachment apparatus of 2nd Example of this invention is provided. In the attachment apparatus of 2nd Example, it is a figure which shows the movement of the steering operation apparatus along a 1st track | orbit. It is a side view for demonstrating the guide mechanism and guide auxiliary | assistance mechanism with which the attachment apparatus of 3rd Example of this invention is provided. In the attachment apparatus of 3rd Example, it is a figure which shows the movement of the steering operating device along a 1st track | orbit. It is a side view for demonstrating the guide mechanism and guide auxiliary | assistance mechanism with which the attachment apparatus of 4th Example of this invention is provided. It is an assembly drawing of the link mechanism with which the attachment apparatus of 4th Example is provided. It is a figure which shows a mode that a link ratio is adjusted in the link mechanism with which the attachment apparatus of 4th Example is provided. In the attachment apparatus of 4th Example, it is a figure which shows a mode that a steering operation apparatus moves along a 1st track | orbit, tilting according to a certain rule. In a mounting device of a 4th example, it is a figure showing signs that a steering operation device moves along the 1st track, tilting according to another rule. In the attachment apparatus of 4th Example, it is a figure which shows a mode that a steering operation apparatus moves along a 1st track | orbit, tilting according to another rule.

Explanation of symbols

10: Steering operation device 12: Steering wheel 14: Steering column 20: Mounting device 30a, 30b: Mounted bracket (first and second guided portions) 32: Mounting bracket (first and second guided portions) 34a, 34b : Engaging pins (first and second guide portions) 36a, 36b: links 38a, 38b: stopper levers 40: connecting bars 50a, 50b: guide holes (second track) 54a, 54b: guide holes (first track) 100a: first guide mechanism 100b: second guide mechanism 102: link mechanism (guide auxiliary mechanism) 120: mounting device 130: mounting device 150: mounting device 152: gear link mechanism (guide auxiliary mechanism) 154a, 154b: gear link 170 : Mounting device 172: Mounting bracket (first and second guide portions) 174a, 174b : Guide hole (first track) 176a, 176b: Mounted bracket (first and second guided parts) 178a: First guide mechanism 178b: Second guide mechanism 180a, 180b: Link 182: Link mechanism (guide auxiliary mechanism) 200: Mounting device 202: Mounting bracket (first and second guide portions) 204: Link mechanism (guide auxiliary mechanism) 206a, 206b: Link 208: Main link 210: Auxiliary link 250: Interlink connection position changing mechanism (link) Ratio change mechanism)

Claims (6)

An attachment device for attaching a steering operation device provided with an operation member for performing a steering operation to a vehicle body so that an operation position of the operation member can be adjusted,
(a) a first guided portion and a second guided portion provided apart from each other in the steering operating device; and (b) two first parallel portions provided in the vehicle body and extending in a set direction. Two of the first guide portion and the second guide portion that allow movement of each of the first guided portion and the second guided portion along each of the tracks, each including one each. A guide mechanism;
Each of them is configured as a link mechanism having two links that are connected to both the steering operation device and the vehicle body so as to be capable of relative rotation, and are linked to each other so as to be capable of relative rotation. A guide auxiliary mechanism for maintaining the position of the guide portion on one of the two first tracks and the position of the second guided portion on the other of the two first tracks in a predetermined relationship; apparatus. An attachment device for attaching a steering operation device provided with an operation member for performing a steering operation to a vehicle body so that an operation position of the operation member can be adjusted,
(a) a first guided portion and a second guided portion provided apart from each other in the steering operating device; and (b) two first parallel portions provided in the vehicle body and extending in a set direction. Two of the first guide portion and the second guide portion that allow movement of each of the first guided portion and the second guided portion along each of the tracks, each including one each. A guide mechanism;
Each of them is configured as a link mechanism having two links that are connected to both the steering operation device and the vehicle body so as to be capable of relative rotation, and are linked to each other so as to be capable of relative rotation. When a force for moving one of the guide portion and the second guided portion in one direction along one of the two first tracks is applied, the first guided portion and the And a guide assisting mechanism for applying a force that causes the other of the second guided portions to move in the same direction as the one direction along the other of the two first tracks.   3. The attachment device according to claim 1, wherein each of the two first tracks extends along arcs having different radii around a virtual point that is virtually set. 4.   Each of the two guide mechanisms further allows movement along each of the two second tracks traversing each of the two first tracks of each of the first guided portion and the second guided portion. The attachment device according to any one of claims 1 to 3, wherein the attachment device is structured. The link mechanism is
In each of the two links, the position of the connection portion between the steering operation device and one of the vehicle bodies is fixed and the position of the connection portion between the steering operation device and the other of the vehicle body is fixed. Are allowed to fluctuate in accordance with the interlocking of the two links, the positions of the two links are fixed at one of the connecting points, and the position at the other link is the two links. The mounting device according to any one of claims 1 to 4, wherein the mounting device has a structure that is allowed to fluctuate in accordance with the interlocking. The attachment device according to claim 1 , wherein the link mechanism includes a link ratio changing mechanism that changes a link ratio of the two links.

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