JPH0586734U - Unsprung member fixing device for vehicle having fifth wheel for turning vehicle - Google Patents

Abstract

(57) [Abstract] [Purpose] To avoid an increase in the total lift of the lifting device for the fifth wheel for turning the vehicle, an increase in the size of the lifting device, and an increase in the weight. [Structure] In a vehicle in which a fifth wheel facing the width direction or the oblique direction of the vehicle when descending is provided on the lower surface of the front portion or the rear portion of the vehicle body so as to be able to move up and down, means 28 for fixing and releasing the unsprung member to the vehicle body 24. 35, 46 to 51 are provided so that the means can be operated when the fifth wheel is moved up and down, so that when the vehicle body is levitated by the fifth wheel, the unsprung member is integrated with the vehicle body and the total lift by the lifting device is provided. The amount decreases. As a result, the operating arm of the lifting device is short, compact and lightweight.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a device for fixing an unsprung member of a vehicle provided with a fifth wheel for turning the vehicle provided on a lower surface of the vehicle for laterally moving the vehicle mainly around a front wheel.

[0002]

[Prior Art]

 Since the usual so-called 2WS vehicle that steers only the front wheels is extremely inconvenient when parking in a narrow space, the present inventor previously proposed Japanese Utility Model Application No. 2-406818 and others. As shown in FIG. 11 and below, the invention of Japanese Patent Application No. Hei 2-406818 is an operation in which one end is supported by the vehicle body B and can be rotated by the actuator 2 on the rear lower surface of the front wheel drive type automobile 1 capable of locking one of the front wheels. The other end of the arm 3 and the other end of the support link 4 whose one end is rotatably supported by the vehicle body B at a predetermined distance from the operating arm 3 are connected to the fifth wheel for vehicle turning at the time of storage (hereinafter referred to as the fifth wheel). A wheel for horizontally supporting five wheels 5) is rotatably connected to both ends of an upright support arm 7 of a carrier 6 by pins 8 and 9, respectively. A vehicle equipped with the above device is preferably a so-called FF vehicle that drives front wheels, and as shown in FIG. 15, for example, a transaxle 14 including an engine 11, a clutch 12 and a differential mechanism 13 on the axes of the front wheels 10 and 10 '. Are set in series, and are configured to transmit the power of the engine 11 to the front wheels 10, 10 'via these drive mechanisms. Further, as shown in FIG. 13, the automobile 1 uses a diagonal split system as its service brake system, and one side from the split master cylinder 16 operated by the brake pedal 15 is a brake 10a for the right front wheel 10 and a rear left side. The brake pipe 18 'is connected to the brake 17'a of the wheel 17', and the brake pipe 18 'is connected to the brake 10'a of the left front wheel 10' and the brake 17a of the right rear wheel 17 on the other side. The cylinder 16 is provided with an electromagnetic check valve 19 of a braking device as disclosed in, for example, Japanese Patent Laid-Open No. 12360/1985, so that when the braking switch 20 is turned on, the brake fluid is confined in the pipe 18 ', and the front wheel 10 is The brake 10a and the brake 17'a of the left rear wheel 17 'are locked. When the automobile 1 having the above configuration is going to be parked in a narrow space, this will be described with reference to FIG. 12. First, the front portion of the automobile 1 is slid diagonally from the rear to the place where the vehicle is to be parked, and the foot brake is applied. Actuating the actuator 2 causes the actuating arm 3 to rotate counterclockwise (FIG. 12). As a result, the supporting arm 7 of the carrier 6 is supported by the supporting link 4 at the other end thereof and is rotated clockwise so that the fifth wheel 5 comes into contact with the ground, thereby raising the rear portion of the vehicle as shown in FIG. At this time, the support arm 7 of the carrier 6 becomes horizontal, but the reaction force from the fifth wheel 5 is received by the support link 4 and the operating arm 3. Here, by moving the vehicle 1 forward, the left front wheel 10 'rotates forward as before, and the rear part of the vehicle turns left by the fifth wheel 6 centering on the right front wheel 10 to move to the parking place. Complete. After parking is complete, the foot brake is applied again, the actuator 2 is operated in reverse, and if the operating arm 3 rotates in the clockwise direction in the opposite direction to the previous time, the carrier 6 rotates in the counterclockwise direction and rises. Then, it stands upright gradually and the fifth wheel 5 becomes horizontal. In the ascending process, the rear wheels 17 and 17 'come into contact with the ground. Here, the brake lock on one of the front wheels (for example, the right wheel 10) is removed, and the normal parking brake is applied. When exiting from the parking position, the brake is applied in the same manner as described above, and then the actuator 2 is operated, whereby the operation arm 3 is rotated counterclockwise. As a result, the support arm 7 of the carrier 6 is supported at the other end by the support link 4 and is rotated in the clockwise direction to ground the fifth wheel 5, thereby raising the rear portion of the vehicle as shown in FIG. As a result, the rear wheels 17 and 17 'of the automobile float, so that one of the front wheels (for example, the right wheel 10) is locked in the braking state as described above and the brake 10'a on the other side 10' is released. When the vehicle 1 is moved backward, the differential mechanism 13 causes the other front wheel 10 'to rotate rearward, so that the fifth wheel 6 rotates the vehicle 1 in the opposite direction from the one front wheel 10 as a center. , Escape the rear of the car from the parking position. If the brake is applied again and the actuator 2 is operated in the opposite manner to the above, the support link 4 is rotated upward to act as the carrier 6 and bring the fifth wheel 5 from the vertical state to the horizontal state. As a result, the rear wheels 17, 17 'of the automobile land, so the brakes and brake locks can be released, and the vehicle can be moved backward as usual and then moved forward. With the above configuration, parking is much easier than before, and if the function inherent in the automobile is utilized, there is no need to provide a special drive mechanism for operating the fifth wheel, and the mechanism is simple. The cost is low, the weight is reduced, and there is no problem in weight balance.

[0003]

[Problems to be solved by the device]

 By the way, the fifth wheel lifting device is mounted on the sprung member (vehicle body). Therefore, when the vehicle body (rear part) is levitated by the lifting device, the rear wheel is first completely rebounded and then reared. I can't float the ring. As a result, the total lift of the lifting device is large, and the operating arm of the lifting device is long and large, which increases the weight. Therefore, the present invention avoids the above-mentioned problems in a vehicle equipped with a conventional fifth wheel lifting device, and immediately avoids an increase in the total lift amount of the lifting device, an increase in the size of the lifting device, and an increase in weight. It should be an issue.

[0004]

[Means for Solving the Problems]

 The unsprung member fixing device for a vehicle provided with the fifth wheel for turning a vehicle according to the present invention for solving the above-mentioned problems is constructed on the lower surface of the front or rear portion of the vehicle body in the width direction or diagonal direction of the vehicle when descending. In a vehicle having a facing fifth wheel movable up and down, a means for fixing and releasing the unsprung member to the vehicle body is provided, and the means is operated when the fifth wheel is moved up and down.

[0005]

[Work]

 When the means for fixing the unsprung member to the vehicle body is actuated when the fifth wheel is moved up and down, the unsprung member is integrated with the vehicle body. For example, when the vehicle body is lifted by the fifth wheel, the unsprung member is simultaneously raised with the vehicle body. The wheels emerge quickly.

[0006]

【Example】

 Before the detailed description of the embodiments, a vehicle to which the present invention is applied, especially a rear wheel of a passenger car will be described with reference to FIG. 3. FIG. 3 shows a rear suspension supported by a jack J from an obliquely rear side. As can be seen, a hub and drum assembly 23, on which a tire is mounted via a spindle (not shown), is attached to a bracket 22 fixed to the end of the frame 21, and a suspension spring 25 is attached between the hub and drum assembly 23 and a vehicle body 24. A shock absorber 26 is also provided. In addition, 27 is a stabilizer. In the above structure, when the vehicle body 24 is lifted, the suspension spring 25 and the shock absorber 26 are first stretched, and the wheels finally start to float when they are fully stretched.

In the embodiment A shown in FIGS. 1 and 2, a hook metal fitting 28 having a punched hole 28a as shown in FIGS. 2A and 2B is fixed to an end portion of a frame 21 in the rear suspension in an upright state. On the other hand, a base end 29b of a hook 29 having a hook 29a formed at one end is rotatably supported on the vehicle body, and a protrusion 29c (on the side of the hook 29a), 29d (hook) formed in the middle of the hook 29 like an arm. One end of the cable 30 and the one end of the return spring 31 are mounted on the side opposite to the portion 29a), the other end of the cable 30 is attached to the operating lever 32 provided in the driver's seat, and the other end of the return spring 31 is attached to the vehicle body 24. It is a thing. When the fifth wheel is moved up and down, the operating lever 32 is pulled prior to the operation of the elevating device, so that the hook 29 rotates around the base end 29b against the return spring 31 via the cable 30. The hook portion 29a at the tip of the hook engages with the hole 28a of the hook metal 28. When the fifth wheel lifting device is operated, particularly when raising the rear vehicle body by the fifth wheel, the frame 21, the bracket 22, the hub and drum assembly 23, and the wheels (not shown) with respect to the vehicle body 24. Since unsprung members such as) are integrated by the hooks 29, the unsprung members ascend with the vehicle body 24 without extending the suspension spring 25 and the shock absorber 26 due to the rising of the fifth wheel, and It can be floated immediately.

In the embodiment B shown in FIGS. 4 to 8, as shown in FIG. 7, between the vehicle body 24 and the unsprung member, for example, the bracket 22, is provided in parallel with the shock absorber 26, and stepless adjustment is possible in the axial direction. The lock lever is connected by the telescopic rod 33, and the release lever 34 of the telescopic rod 33 is guided to the driver's seat by the cable mechanism 35. The principle of the expandable rod 33 will be described with reference to FIG. 6. The expandable rod 33 is wound around the rod 39 within the predetermined interval of the rod 39 which is inserted by being supported by the bearings 37 and 38 at a predetermined interval in the cylinder 36. The winding springs 40, 41 whose opposite ends (inner ends) are biased in the same direction are arranged between the cylinder 36 and the cylinder 36 via a retainer 42, and the winding springs 40, 41 are also provided. The outer end of the cylinder is hung on the bearings 37 and 38, and the inner end is hung on the release lever 34 which is loosely mounted on the rod 39. The release lever 34 projects from a hole 36a formed in the cylinder 36 and has a constant angle. It is configured to be rotatable. When the release lever 34 is not rotated, the elastic rod 33 has the winding springs 40 and 41 tightly wound around the rod 39 so that the length of the rod 39 is fixed and the release lever 34 is moved in the direction of the arrow in FIG. When rotated, the coil springs 40 and 41 are loosened, and the rod 39 can freely expand and contract. FIG. 8 is a cross-sectional view showing a state in which the upper end of the telescopic rod 33 is attached to the vehicle body 24. The tip end of the rod 39 is projected through the mount rubber 43 fitted in the hole formed in the vehicle body. A set metal fitting 44 and a washer 45 are fitted and a lock nut 46 is screwed into a threaded portion 39a formed at the tip of the rod 39. Therefore, normally, if the release lever 34 is pulled by the cable mechanism 35, the rod 39 can be freely expanded and contracted, so that the normal suspension spring 25 and the shock absorber 26 are not hindered from operating. When the fifth wheel is moved up and down, if the cable mechanism 35 is loosened prior to the operation of the lifting device, the rod 39 is tightened by the coil springs 40 and 41 to fix the rod 39. Therefore, similarly to the above-described embodiment, the vehicle body 24 and the unsprung member are integrated by the telescopic rod 33, and the unsprung member is raised together with the vehicle body so that the wheels can be quickly lifted.

In the embodiment C shown in FIG. 9, branch ends 49 and 50 of a cable mechanism 48 are fixed to the middle of the left and right trailing arms 46 and 47 of the rear suspension, and the other end is connected to an operating lever 51. It was done. When the fifth wheel is moved up and down, if the cable mechanism 48 is pulled by the operating lever 51 prior to the operation of the lifting device, the trailing arms 46 and 47 are fixed at least at that position via the branch ends 49 and 50, as described above. Then, the vehicle body and the unsprung member are integrated. Therefore, as the fifth wheel descends, the unsprung member ascends together with the vehicle body, and the wheels can be quickly lifted.

FIG. 10 shows a handbrake lever 52 with a handbrake cable mounting bracket 53 and an unsprung member fixing cable mounting bracket 54 arranged side by side, whereby the operating levers 32 and 51 are separately provided. There is no need.

[0011]

[Effect of the device]

 An unsprung member fixing device for a vehicle having a fifth wheel for turning a vehicle according to the present invention is provided on a lower surface of a front portion or a rear portion of a vehicle body so that a fifth wheel, which is oriented in the width direction or the oblique direction of the vehicle when descending, can be freely moved up and down. In the provided vehicle, means for fixing and releasing the unsprung member to the vehicle body is provided, and the means is operated when the fifth wheel is moved up and down. Therefore, when the vehicle body is levitated by the fifth wheel, the unsprung member is the vehicle body. The total lift of the lifting device will be reduced. For this reason, the operating arm of the lifting device is short, small and lightweight. Further, in the embodiment A, since the hook is hooked on the unsprung member via the hook metal fitting, the effect of further securely fixing the unsprung member is added. Further, in the embodiment B, since the unsprung member and the vehicle body are connected by the telescopic rod equipped with the stepless lock mechanism that can be unlocked by the release lever, the vehicle height, that is, the above-mentioned vehicle body and the splashing member The effect of being able to deal with any change in the distance of is added. Also, in the embodiment C, the cable mechanism is directly connected to the unsprung member and is pulled by the actuating lever, so that the mechanism is very simple.

[0012]

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment A of an unsprung member fixing device for a vehicle including a fifth wheel for turning a vehicle according to the present invention.

FIG. 2a is a perspective view of a hooking metal used in Example A. FIG.

FIG. 2b is a cross-sectional view of the hook metal fitting used in Example A.

FIG. 3 is a rear perspective view of a rear suspension to which the present invention is applied.

FIG. 4 is a partially longitudinal front view of a telescopic rod having a stepless locking mechanism used in Example B of the unsprung member fixing device for a vehicle including the fifth wheel for vehicle turning of the present invention.

5 is a side view of a telescopic rod used in Example B. FIG.

FIG. 6 is a cross-sectional view for explaining the principle of a telescopic rod having a stepless lock mechanism.

FIG. 7 is a perspective view of Embodiment B of the unsprung member fixing device for a vehicle provided with the fifth wheel for vehicle turning of the present invention.

FIG. 8 is a cross-sectional view showing a state in which a telescopic rod having a stepless lock mechanism used in Example B is attached to a vehicle body.

FIG. 9 is an overall perspective view of embodiment C of the unsprung member fixing device for a vehicle provided with the fifth wheel for vehicle turning of the present invention.

FIG. 10 is a perspective view of an operating lever used in an unsprung member fixing device of a vehicle having a fifth wheel for turning a vehicle according to the present invention.

FIG. 11 is a perspective view of a conventional lifting device for a fifth wheel for turning.

FIG. 12 is a front view of a conventional lifting device for a fifth wheel for turning.

FIG. 13 is a plan view showing a braking device of an automobile provided with a lifting device for a turning fifth wheel.

14 is a side view showing a parking situation of the vehicle shown in FIG. 11. FIG.

FIG. 15 is an operational plan view of an automobile parked using the turning fifth wheel.

[Explanation of symbols]

 21 frame 22 bracket 24 vehicle body 25 suspension spring 26 shock absorber 28 hook metal fitting 29 hook 30 cable 31 return spring 32 actuating lever 33 expansion rod 34 release lever 35 cable mechanism 39 rod 40 coil spring 41 coil spring 48 cable mechanism 51 operating lever 52 hand Brake lever.

Claims (4)

[Scope of utility model registration request] 1. A means for fixing and releasing an unsprung member to a vehicle body in a vehicle in which a fifth wheel, which is oriented in a width direction or a diagonal direction of the vehicle when descending, is provided on a lower surface of a front portion or a rear portion of the vehicle body so as to be able to move up and down. An unsprung member fixing device for a vehicle provided with a fifth wheel for vehicle turning, characterized in that the means is provided to be operated when the fifth wheel is moved up and down. 2. A hook for fixing and releasing the unsprung member to the vehicle body is rotatably supported on the vehicle body, and a hook whose tip hook engages with the unsprung member, and the hook is pulled to the unsprung member side. An unsprung member fixing device for a vehicle, comprising a fifth wheel for vehicle turning according to claim 1, characterized in that it comprises a cable mechanism and a return spring. 3. A cable connecting the unsprung member to the vehicle body with a telescopic rod having a stepless lock mechanism installed between the vehicle body and the unsprung member, and a cable connected to a release lever of the lock mechanism. An unsprung member fixing device for a vehicle, comprising a fifth wheel for vehicle turning according to claim 1, characterized in that it comprises a mechanism. 4. The cable mechanism, wherein the means for fixing and releasing the unsprung member to the vehicle body is a cable mechanism having one end fixed to the unsprung member and the other end connected to a lever fixed to the vehicle body. An unsprung member fixing device for a vehicle, comprising the fifth wheel for vehicle turning according to claim 1.