JP2019142409A - Fitting structure of lateral rod - Google Patents

Abstract

To provide a fitting structure of a lateral rod which can reduce displacement of fitting positions at both ends of a lateral rod accompanied with vertical movement of wheels with respect to a vehicle width direction, and can improve travel stability by suppressing a horizontal shake of a vehicle body.SOLUTION: In a fitting structure of a lateral rod 1 fitted to a vehicle where a suspension arm A is extended from a rear axle T constituting an axle and a tip A1 of the suspension arm A is supported by a support frame part F1 constituting a vehicle body so as to be oscillated, and formed of a rod-like member coupling the rear axle T to the vehicle body, the lateral rod 1 has one end 1a fitted to a prescribed position of the suspension arm A fixed to the rear axle T and has the other end 1b fitted to a prescribed position of the support frame F1 that supports the suspension arm A so as to be oscillated, and is fitted in an inclined state with respect to the vehicle width direction.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a lateral rod mounting structure that can restrict left and right deflection of a vehicle body by restricting left and right movement of an axle (rear axle).

  Some vehicles, such as automobiles, having a rigid axle (rear axle) are provided with a lateral rod for suppressing the shake of the vehicle body in the left-right direction (vehicle width direction). Such lateral rods (sometimes referred to as “Panal rods”) have conventionally been made of a rod-like member that connects a rear axle constituting a vehicle axle and a vehicle body frame, and extends in the vehicle width direction of the vehicle. It is attached (see, for example, Patent Document 1).

JP 2011-162094 A

  However, for example, in a small vehicle having a very small vehicle width dimension, the lateral rod is shortened, so that the displacement angle of the lateral rod is relatively increased due to the vertical movement of the wheel, and the mounting positions of both ends of the lateral rod are increased. May be greatly displaced in the left-right direction. In this case, there is a problem in that the amount of deviation between the center axis of the vehicle and the center of the axle becomes large, and the vehicle body is laterally shaken (vibration in the vehicle width direction), resulting in a deterioration in running stability.

  The present invention has been made in view of such circumstances, and can reduce the displacement in the vehicle width direction of the mounting positions of both ends of the lateral rod accompanying the vertical movement of the wheel, and suppress the lateral shake of the vehicle body. An object of the present invention is to provide a lateral rod mounting structure capable of improving running stability.

  According to a first aspect of the present invention, a suspension arm is extended from a rear axle that constitutes an axle, and a tip of the suspension arm is attached to a vehicle that is swingably supported by a support frame portion that constitutes a vehicle body. In the lateral rod mounting structure comprising a rod-shaped member that connects the vehicle body and the vehicle body, the lateral rod is mounted at a predetermined position of the suspension arm, one end of which is fixed to the rear axle, and the other end is mounted on the suspension arm. It is attached to the predetermined position of the said support frame part which supported so that rocking was possible, and it attached in the state inclined with respect to the vehicle width direction.

  According to a second aspect of the present invention, in the lateral rod mounting structure according to the first aspect, the other end of the lateral rod is mounted on or near the swing axis of the suspension arm with respect to the support frame. It is characterized by.

  According to a third aspect of the present invention, in the lateral rod mounting structure according to the first or second aspect, the one end portion of the lateral rod is a fixed position of the suspension arm with respect to the rear axle and a position directly below the axle or It is characterized by being attached at a position directly above.

  According to a fourth aspect of the present invention, in the lateral rod mounting structure according to the first or second aspect, one end portion of the lateral rod is positioned closer to the support frame portion than a fixed position of the suspension arm with respect to the rear axle. It is attached to.

  According to a fifth aspect of the present invention, in the lateral rod mounting structure according to any one of the first to fourth aspects, the connection direction of the lateral rod is freely changeable at one end or the other end thereof. A link ball is formed and attached to a predetermined position of the suspension arm or a predetermined position of the support frame portion via the link ball.

  According to a sixth aspect of the present invention, in the lateral rod mounting structure according to any one of the first to fifth aspects, the length of the lateral rod can be arbitrarily adjusted.

  A seventh aspect of the invention is a vehicle comprising the lateral rod mounting structure of the first to sixth aspects.

  According to the first aspect of the present invention, the lateral rod is attached to a predetermined position of the suspension arm, one end of which is fixed to the rear axle, and the other end of the lateral rod is a predetermined of the support frame portion that supports the suspension arm so as to be swingable. Since it is mounted at a position and tilted with respect to the vehicle width direction, the displacement of the mounting positions of the lateral rods at both ends of the lateral rod due to the vertical movement of the wheel can be reduced. And the running stability can be improved.

  According to the invention of claim 2, since the other end portion of the lateral rod is attached on or near the swing axis of the suspension arm with respect to the support frame portion, the attachment positions of both ends of the lateral rod accompanying the vertical movement of the wheel The displacement in the vehicle width direction can be further reduced, and the lateral shaking of the vehicle body can be further suppressed.

  According to the invention of claim 3, since the one end portion of the lateral rod is attached to the position where the suspension arm is fixed to the rear axle and directly below or directly above the axle, the one end portion of the lateral rod is more reliably attached. It can be fixed, and the displacement of the attachment positions of the lateral rods at both ends of the lateral rod accompanying the vertical movement of the wheel can be reduced in the vehicle width direction, and the lateral shaking of the vehicle body can be suppressed.

  According to the invention of claim 4, since the one end portion of the lateral rod is attached at a position closer to the support frame portion than the fixed position of the suspension arm to the rear axle, the one end portion of the lateral rod is attached for convenience of vehicle layout. The present invention can also be applied to a vehicle that is difficult to be mounted at a position directly below or directly above the axle.

  According to the invention of claim 5, the lateral rod is formed with a link ball whose connection direction can be freely changed at one end or the other end thereof, and the suspension arm is positioned or supported via the link ball. Since it is attached at a predetermined position of the frame portion, workability at the time of attaching the lateral rod to the vehicle can be improved.

  According to the invention of claim 6, since the length of the lateral rod can be arbitrarily adjusted, the workability at the time of mounting the lateral rod to the vehicle can be improved, and the lateral rod corresponding to the vehicle can be improved. The length can be arbitrarily adjusted.

  According to invention of Claim 7, the vehicle which has the effect of Claims 1-6 can be provided.

The perspective view which shows the rear part of the vehicle with which the mounting structure of the lateral rod which concerns on embodiment of this invention is applied A perspective view of a rear portion of a vehicle to which the lateral rod mounting structure is applied as viewed from below Side view showing a rear portion of a vehicle to which the lateral rod mounting structure is applied Sectional drawing which shows the rear part of the vehicle to which the mounting structure of the lateral rod is applied Front view showing the lateral rod (the state after one end and the other end are connected to the base) Front view showing the lateral rod (the state before one end and the other end are connected to the base) Side view showing one end and the other end of the lateral rod VIII-VIII line sectional view in FIG. Side view showing a fixing member and a suspension arm fixed to a rear axle of a vehicle to which the lateral rod mounting structure is applied. It is a schematic diagram which shows the attachment structure with respect to the vehicle of the one end part of the same lateral rod, Comprising: XX sectional drawing in FIG. Schematic showing the mounting structure for the vehicle at the other end of the lateral rod Schematic diagram showing the behavior of the vehicle body in the left-right direction when the wheels move up and down for vehicles to which the lateral rod mounting structure is applied Schematic diagram showing the behavior of the vehicle body in the left-right direction when the wheels move up and down for a vehicle to which a conventional lateral rod mounting structure is applied The schematic diagram seen from the lower part which shows the attachment structure of the lateral rod which concerns on other embodiment of this invention The schematic diagram seen from the lower part which shows the attachment structure of the lateral rod which concerns on further another embodiment of this invention

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
The lateral rod 1 according to the present embodiment is composed of a rod-like member that connects a rear axle that constitutes the axle of a vehicle and a frame of the vehicle body, and is intended to suppress the shake of the vehicle body in the left-right direction (vehicle width direction). As a vehicle applied to the present embodiment, for example, it is composed of a small vehicle on which one driver can board, and a vehicle width dimension is set small with respect to a general-purpose vehicle, and thrust is obtained by a driving force of a motor. It can be an electric vehicle (EV).

  Specifically, the vehicle applied to the present embodiment is configured such that the driving force of the motor M can be transmitted to the wheel (rear wheel R) via the differential gear D, as shown in FIGS. At the same time, a suspension arm A is extended from a rear axle T constituting the axle, and a tip end portion A1 of the suspension arm A is swingably supported by a support frame portion F1 constituting the vehicle body. The present embodiment is applied to a vehicle having a rigid axle (rear axle T). In addition, the code | symbol Y in a figure shall show a vehicle width direction, and shall show the up-down direction of a vehicle with the code | symbol Z, and shall show the front-back direction of a vehicle with the code | symbol X.

  The suspension arm A is composed of rod-shaped members that extend in the front-rear direction on the left and right sides of the vehicle, and is fixed to the rear axle T via the fixing member 2 as shown in FIGS. The part A1 is swingably attached to the support frame part F1, and the suspension S is attached to the rear end part A2. Reference numeral 4 in the figure denotes a bush disposed at the swinging portion between the tip end portion A1 of the suspension arm A and the support frame portion F1, and the center of the bush 4 is the swinging axis of the suspension arm A. Forming.

  More specifically, the fixing member 2 is fixed to the rear axle T by welding or the like, and at the mounting position of the fixing member 2 on the suspension arm A, as shown in FIGS. An attachment hole Aa to which is attached is formed. Further, the fixing member 2 is formed with a mounting hole Ab at a position corresponding to the mounting hole Aa, and by inserting the bolt E while matching the mounting hole Aa and the mounting hole Ab and tightening with a nut, The suspension arm A can be connected to the fixing member 2 fixed to the rear axle T.

  On the other hand, as shown in FIGS. 1 and 3, the suspension S has one end attached to the rear end A2 of the suspension arm A and the other end attached to a frame part F2 constituting the vehicle body. As a result, when the rear wheel R moves up and down with respect to the vehicle body as the vehicle travels, the suspension arm A swings about the front end A1 and the suspension S can absorb vibration. .

  As shown in FIGS. 2 to 4, the support frame portion F <b> 1 is made of a metal member that constitutes the vehicle body, and extends in the left-right direction (vehicle width direction) of the vehicle. The tip end portion A1 is swingably attached. The support frame portion F1 is located in front of the vehicle from the rear axle T, and a stay b for fixing the other end portion 1b of the lateral rod 1 according to the present embodiment is welded to a predetermined portion thereof. It is attached.

  The lateral rod 1 according to the present embodiment is composed of a rod-like member in which a rear axle T and a support frame portion F1 of a vehicle body are connected via a suspension arm A, and as shown in FIGS. 1R), a rod-like base portion 1c formed with one end, an end portion 1a formed with a female screw m (see FIGS. 7 and 8) that can be screwed with a male screw 1L of the base portion 1c, and a male screw 1R of the base portion 1c. And the other end 1b on which a female screw m (see FIGS. 7 and 8) that can be screwed is formed.

  The male screws (1L, 1R) formed on the base 1c are respectively reverse screws (for example, the male screw 1L is a right screw and the male screw 1R is a left screw, or the male screw 1L is a left screw and a male screw 1R is a right screw). When the base portion 1c is rotated around the axis while the one end portion 1a and the other end portion 1b are fixed, the entire length of the lateral rod 1 can be arbitrarily adjusted. In the state where the lateral rod 1 has a desired length, the relative movement between the one end 1a and the other end 1b and the base 1c is locked by tightening the nut L.

  Furthermore, the lateral rod 1 according to the present embodiment is formed with a link ball B whose connection direction can be freely changed at one end 1a and the other end 1b, and the suspension arm A is connected to the lateral rod 1 via the link ball B. It is attached to a predetermined position or a predetermined position of the support frame portion F1. Specifically, the threaded portion (n1, n2) is extended to the link ball B provided in the one end 1a and the other end 1b of the lateral rod 1, and the threaded portion (n1, n2) is attached to the stay. Since the lateral rod 1 is attached to the vehicle by being fixed to (a, b), when the lateral rod 1 is attached to the vehicle, the connection direction (that is, the base 1c relative to the attachment direction of the one end 1a or the other end 1b) The extending direction) can be changed in any direction by the rotation of the link ball B.

  Here, as shown in FIG. 4, the lateral rod 1 according to the present embodiment is attached to a predetermined position of the suspension arm A having one end 1 a fixed to the rear axle T, and the other end 1 b is attached to the suspension arm A. Is attached at a predetermined position of the support frame portion F1 that is swingably supported, and is attached in a state inclined by a predetermined angle α relative to the vehicle width direction Y of the vehicle.

  In the present embodiment, as shown in FIG. 4, one end 1 a of the lateral rod 1 is a fixed position with respect to the rear axle T of the suspension arm A and a position on the axle Q1 (rotational axis of the rear wheel R). The other end portion 1b of the lateral rod 1 is attached on or near the swing axis Q2 of the suspension arm A with respect to the support frame portion F1.

  Specifically, one end 1a of the lateral rod 1 according to the present embodiment is fixed to a stay a fixed to the fixing member 2 by welding or the like, as shown in FIG. That is, the one end portion 1a is fixed by tightening the nut N from the front and back of the stay a in a state where the screw portion n1 is inserted into the mounting hole formed in the stay a. This is a fixed position with respect to the rear axle T, and is configured to be attached at a position directly below the axle line Q1. Note that the one end 1a of the lateral rod 1 may be attached to a position where the suspension arm A is fixed to the rear axle T and directly above the axle Q1.

  On the other hand, the other end portion 1b of the lateral rod 1 according to the present embodiment is fixed to a stay b fixed to the support frame portion F1 by welding or the like, as shown in FIG. That is, the other end portion 1b is fixed by tightening the nut N from the front and back of the stay b in a state where the screw portion n2 is inserted through the mounting hole formed in the stay b, and in this state, the support frame portion The suspension arm A is configured to be mounted on or near the swing axis Q2 of the suspension arm A with respect to F1.

  As described above, the lateral rod 1 according to this embodiment is attached to the suspension arm A having one end 1a fixed to the rear axle T, and the support frame having the other end 1b swingably supporting the suspension arm A. As shown in FIG. 12, the rear wheel R is moved up and down and the one end 1a is moved between the positions X1 and X2 because it is attached to the part F1 and attached in a state inclined with respect to the vehicle width direction Y. Even so, since the mounting position in the left-right direction (vehicle width direction) of the one end 1a does not change much, the displacement of the mounting positions at both ends of the lateral rod 1 with respect to the vertical movement of the wheel (rear wheel R) in the vehicle width direction. Can be reduced.

  When the lateral rod 1 is disposed in the vehicle width direction as in the prior art, as shown in FIG. 13, when the rear wheel R moves up and down and the one end 1a moves between positions X1 and X3, Since the mounting position in the left-right direction (vehicle width direction) changes while the part 1a draws an arc, the displacement W in the vehicle width direction of the mounting positions at both ends of the lateral rod 1 accompanying the vertical movement of the wheel (rear wheel R) is large. turn into. As a result, the vehicle is shaken and the running stability is impaired.

  According to the above-described embodiment, the lateral rod 1 is attached to a predetermined position of the suspension arm A having one end 1a fixed to the rear axle T, and the other end 1b supports the suspension arm A so as to be swingable. Since it is attached at a predetermined position of the frame portion F1 and inclined at a predetermined angle α with respect to the vehicle width direction Y, the attachment positions of both ends of the lateral rod 1 associated with the vertical movement of the wheel (rear wheel R) are Displacement in the vehicle width direction can be reduced, and lateral stability of the vehicle body can be suppressed to improve running stability.

  Further, the other end 1b of the lateral rod 1 according to the present embodiment is mounted on or near the swing axis Q2 of the suspension arm A with respect to the support frame portion F1, so that the wheel (rear wheel R) can be moved up and down. Accordingly, the displacement of the attachment positions at both ends of the lateral rod 1 in the vehicle width direction can be further reduced (especially, the displacement is eliminated in the present embodiment), and the lateral shaking of the vehicle body can be further suppressed. Further, the one end 1a of the lateral rod 1 according to the present embodiment is a fixed position with respect to the rear axle T of the suspension arm A and is attached at a position directly below or just above the axle Q1, so that one end of the lateral rod 1 is The portion 1a can be more securely fixed, and the displacement of the mounting positions of the lateral rods 1 at both ends of the lateral rod 1 associated with the vertical movement of the wheel (rear wheel R) can be reduced. Can be suppressed.

  Furthermore, the lateral rod 1 according to the present embodiment is formed with a link ball B whose connection direction can be freely changed at one end 1a or the other end 1b, and the suspension arm A of the suspension arm A is interposed via the link ball. Since it is attached at a predetermined position or a predetermined position of the support frame portion F1, for example, a dimensional error between the lateral rod 1 and the mounting position of the vehicle can be easily absorbed, and work when mounting the lateral rod 1 to the vehicle Can be improved. In this embodiment, the link ball B is formed on both the one end 1a and the other end 1b of the lateral rod 1, but the link ball B is provided on either the one end 1a or the other end 1b. You may make it form, or it is good also as a connection form which does not have the link ball | bowl B.

  In addition, since the lateral rod 1 according to the present embodiment can be arbitrarily adjusted in length, for example, a dimensional error between the lateral rod 1 and the mounting position of the vehicle can be easily absorbed. Workability at the time of attaching the lateral rod 1 to the vehicle can be improved, and the length of the lateral rod 1 can be arbitrarily adjusted according to the vehicle. In the present embodiment, male screws (1L, 1R) comprising right and left screws are formed at both ends of the base 1c, but both male screws (1L, 1R) are used as right screws or left screws. Alternatively, it may be in another connection form, or one end portion 1a, the other end portion 1b, and the base portion 1c may be integrated.

  Although the present embodiment has been described above, the present invention is not limited to this. For example, as shown in FIG. 14, the one end portion 1 a of the lateral rod 1 is supported from the fixed position of the suspension arm A with respect to the rear axle T. It is good also as what was attached to the position close to. In this case, it can be applied to a vehicle in which it is difficult to attach the one end 1a of the lateral rod 1 to a position directly below or just above the axle for convenience of vehicle layout. As shown in FIG. 15, the one end 1 a of the lateral rod 1 may be attached to a position closer to the rear end A <b> 2 than the position where the suspension arm A is fixed to the rear axle T.

  In the present embodiment, the present invention is applied to a small EV vehicle on which one driver can board, but a vehicle (engine) having a driving form different from a vehicle on which two or more people can board or an electric vehicle (EV). May be applied to a vehicle or a hybrid vehicle using a power source. Furthermore, in this embodiment, both ends of the lateral rod 1 are fixed to the vehicle via the stays (a, b), respectively, but the lateral rod 1 may be attached by other fixing.

  One end is attached to a predetermined position of a suspension arm fixed to the rear axle, and the other end is attached to a predetermined position of a support frame portion that swingably supports the suspension arm, and is inclined with respect to the vehicle width direction. As long as the lateral rod is attached in the structure, it can be applied to a structure having a different external shape or a structure to which other functions are added.

DESCRIPTION OF SYMBOLS 1 Lateral rod 1a One end part 1b Other end part 1c Base part 2 Fixing member 3 Bush 4 Bushing R Rear wheel S Suspension M Motor A Suspension arm A1 Front end part A2 Rear end part T Rear axle B Link ball F1 Support frame part

Claims (7)

A rod-shaped member that is attached to a vehicle in which a suspension arm is extended from a rear axle that constitutes an axle, and a tip end portion of the suspension arm is swingably supported by a support frame portion that constitutes the vehicle body, and connects the rear axle and the vehicle body In the lateral rod mounting structure consisting of
The lateral rod has one end attached to a predetermined position of the suspension arm fixed to the rear axle, and the other end attached to a predetermined position of the support frame portion that supports the suspension arm to be swingable. A mounting structure for a lateral rod, wherein the mounting structure is mounted in an inclined state with respect to the vehicle width direction.   The lateral rod mounting structure according to claim 1, wherein the other end of the lateral rod is mounted on or near the swing axis of the suspension arm with respect to the support frame.   3. The lateral rod according to claim 1, wherein one end portion of the lateral rod is attached to a position at which the suspension arm is fixed to the rear axle and directly below or just above the axle. Mounting structure.   The lateral rod mounting structure according to claim 1 or 2, wherein one end portion of the lateral rod is mounted at a position closer to the support frame portion than a position where the suspension arm is fixed to the rear axle.   The lateral rod is formed with a link ball whose connection direction can be changed to an arbitrary direction at one end or the other end of the lateral rod, and a predetermined position of the suspension arm or a predetermined position of the support frame portion via the link ball. The lateral rod mounting structure according to any one of claims 1 to 4, wherein the lateral rod mounting structure is mounted.   The lateral rod mounting structure according to any one of claims 1 to 5, wherein a length of the lateral rod is arbitrarily adjustable.   A vehicle comprising the lateral rod mounting structure according to claim 1.

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