JP2577421Y2 - Car maintenance lift - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to an automobile maintenance lift for lifting an automobile when performing maintenance such as inspection and repair of the automobile. More specifically, a left and right platform for mounting front and rear, left and right wheels is a pantograph mechanism. The platform is lowered to a level equal to or lower than the loading surface of the platform by lowering to the lower limit of the platform, and the level of the loading surface is raised by raising the platform from the lower limit. The present invention relates to an automobile maintenance lift provided with a tire stopper protruding upward from the vehicle.

[0002]

2. Description of the Related Art Conventionally, this kind of car maintenance lift is
When a pair of left and right platforms are raised by a pantograph mechanism, the tire stoppers at one or both ends of the platform protrude upward from the loading surface level, and when the platform is lowered to the lower limit, the tire stoppers are released.
It has a conversion mechanism that is immersed in the level of the loading surface . FIG. 6 is a detailed view of the conversion mechanism in the prior art, and shows a tire stopper B having an outer end rotatably mounted on an end portion of a loading surface 1b 'constituting the upper surface of a platform 1b.
A connection bar 200 having an upper end pivotally attached to an intermediate portion of the tire stopper B, and a rear end pivotally attached to a lower end portion of the connection bar 200; Stopper arm 201 with a guide roller 202 rotatable at the tip as a rotation center 201 ′
And the rotation center 201 ′ in the stopper arm 201.
And a tension spring 203 having one end hooked at an intermediate portion between the shaft mounting portion of the connecting bar 200 and the other end, and the other end hooked to an arbitrary position on the back surface of the platform 1b. This conversion mechanism resists the spring force of the tension spring 203 as the guide roller 202 comes into contact with the bottom of the accommodation pit 101 recessed in the floor 100 and the stopper arm 201 rotates counterclockwise. When the connecting bar 200 is lowered and the platform 1b is accommodated in the accommodation pit 101, the tire stopper B is lowered by clockwise rotation to a level equal to or lower than the loading surface 1b '(solid line), As the platform 1b moves upward, the guide roller 202 separates from the bottom of the storage pit 101 and the tension resistance of the tension spring 203 is eliminated, and at the same time, the stopper arm 20 is moved by the spring force of the tension spring 203.
While rotating 1 in a clockwise direction, the connecting bar 200 is raised to rotate the tire stopper B in a counterclockwise direction so that the tire stopper B projects upward from the level of the loading surface 1b '(two points). Chain line). FIG. 7 shows another prior art example. In a state where the platform 1b is close to the floor 100 at the end of the platform 1b,
Moving plate for introducing a car to its platform 1b
When the platform 1b ascends, the movable plate 300 hangs downward by weight when the platform 1b rises. As a result, the movable plate 300 in the end region rotates and rises, thereby causing the tire stopper B to rise. Is formed.

[0003]

However, in both the former and the latter, the tire stopper B which is flush with the loading surface 1b 'at the lower limit position of the platform 1b.
However, since it is configured to be raised by rotation (counterclockwise in FIGS. 6 and 7) in the process of raising the platform 1b, the tire cannot be positioned in the rotation range where the tire stopper B rotates. In such a structure, the wheelbase of a loadable vehicle is short in proportion to the length of the platform, and in order to be able to load a vehicle with a satisfactory wheelbase, the lift must be lengthened inevitably. As a result, a large lift installation space is required, and the limited maintenance floor space is unnecessarily occupied, and the floor space cannot be used effectively.

The present invention has been made in view of the above-mentioned conventional circumstances, and has a technical problem in that a tire stopper is linearly moved up and down at the end of the platform to increase the effective loading length of the platform. To provide a car maintenance lift that can

[0005]

The technical means taken to solve the above problem is that a left and right platform for mounting front and rear and left and right wheels is configured to be able to ascend and descend, and one or both ends of the platform. In a car maintenance lift in which a tire stopper is mounted so as to be able to move in and out, the lowering movement and the rising movement of the platform are controlled by a tire stopper.
A linear motion conversion mechanism that converts the
The gist is that it has been installed across the platform and the tire stopper .

[0006]

According to the above technical means, the entire length of the platform other than the range in which the tire stoppers (plates) at one or both ends of the platform move up and down linearly is used as the effective loading length of the vehicle.

[0007]

[Effects of the Invention] The present invention has the following features .
The platform is a tire stopper that moves linearly, and only one or both outer ends are occupied.The loading of the platform occupied by the tire stopper compared to the type in which the tire stopper rotates and appears as in the previous example The impossible space becomes extremely small. Therefore, it is possible to load a large vehicle having a wheelbase longer than before even though the lift has the same platform length, and not only can the range of loadable vehicle types be expanded,
For lifts loaded with the same target vehicle type, the length of the platform can be shortened so that the installation space can be reduced, and the maintenance floor space can be effectively used. In addition, the present invention
Tire stopper by raising / lowering movement of platform
Can be raised and lowered in the vertical direction. That is, lift
Platform raises and lowers even if the
Guide rod of linear motion conversion mechanism that moves up and down in the vertical direction
Is very convenient because it doesn't need to be long. In addition,
Tire stopper and its tire stopper
The linear motion conversion mechanism that appears and retracts in the direction is the side end of the platform
Can be completed just by stopping with a few bolts,
It can be easily attached to and detached from
When performing, all additional processing on parts other than the lift, for example, the floor, etc.
A lift that can be manufactured very easily
Can be provided.

[0008]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of an automobile maintenance lift, and FIG. 5 shows a second embodiment of the automobile maintenance lift. Reference numeral A denotes a lift for vehicle maintenance according to the present embodiment, which indicates a buried type.

First, a first embodiment will be described. This automobile maintenance lift A is provided with a seat plate 1a fixed to the front and back of a bottom surface of a parallel-viewing rectangular receiving pit 101 recessed on a floor 100, respectively. The platform 1b is connected to the platform 1b by a lifter 1f including a pantograph mechanism 1c and a cylinder 1e. When the lifter 1f is reduced, the pantograph mechanism 1c is folded so that the platform 1b is flush with the open edge of the storage pit 101. When the lifter 1f is extended, the pantograph mechanism 1c stands up and raises the platform 1b to form a maintenance work space between the platform 1b and the floor 100, which has a conventionally well-known configuration. Tire stoppers B are provided at both ends so as to be able to protrude and retract.

The tire stopper B converts the downward movement / upward movement of the platform 1b into a linear movement via a linear movement conversion mechanism C.
Loading surface 1b 'of platform 1b following the downward movement of
Is controlled so as to be linearly lowered to a level equal to or lower than that, and to linearly protrude upward from the loading surface 1b 'level of the platform 1b following the upward movement of the platform 1b.

The tire stopper B has a flat U-shape in a plan view, and as shown in FIG.
b is loosely fitted in the mounting frame member 1 fixed to the end face.

The mounting frame member 1 is formed from a long surface 11-1 to an extended surface 41 of the frame portion 11 having a rectangular through hole 21 in a plan view.
Are formed vertically, and two points in the upper end area of the frame 11 and the extension surface
A total of four points, two points 41, are fixed to both ends of the platform 1b by bolts 1 'on the end face of the platform 1b, and are fixed to both end faces 11-2 and other long faces 11-3 of the frame 11. The tire stopper B is loosely fitted with the both end surfaces b, b and the long surface b ′ between the two end surfaces b, b being close to each other.

As shown in FIGS. 2 to 4, the linear motion conversion mechanism C is provided with the one long surface 11 of the frame 11 of the mounting frame 1.
A guide plate 2 projecting from an intermediate portion of the guide plate 2 and having a guide hole 12 opened in the center portion, and a guide hole 13 projecting from the extension surface 41 portion directly below the vertical direction of the guide plate 2 and opening the guide hole 13 in the center portion. A guide rod 4 having a rotating roller 14 at the lower end is slidably inserted into a guide hole 12, 13 of the drilled guide bracket 3, and the guide rod 4 is centered on an intermediate portion of the guide rod 4. The horizontal plate 5 is fixed horizontally, the recesses 25 for insertion are formed at both ends of the horizontal plate 5, and the left and right link members 6, 6 having long holes 16, 16 at both ends. The one long side 11
-1 and rotatably supported by the ridge 7 protruding from
One end of the link member 6, 6 is connected to the recess 25 of the horizontal plate 5,
The pins 8, 8 which are inserted into the slots 25, and pass through the slots 16, 16 are fastened to the opposed arm pieces 35, 35 forming the recesses 25, 25, and one end of the link members 6, 6 and the horizontal plate 5 And the pins 8, 8 protruding from the tire stopper B are inserted into the long holes 16, 16 at the other end of the link members 6, 6, and further from the one long surface 11-1 of the frame portion 11. Tension spring material hung on projecting support pin 9
The lower end of 10 is hooked on a middle part on the other end side of the rotation center 7 ′ of the left and right link members 6, 6.

The linear motion conversion mechanism C is provided with the guide rod 4
When there is no push-up resistance, the other end sides of the left and right link members 6, 6 are rotated around the rotation center 7 'by the tension spring force of the tension spring 10, and are pulled up in an upwardly inclined manner to release the tire stopper B. Linearly projecting upward from the loading surface 1b 'of the platform 1b,
Conversely, when the guide rod 4 receives a push-up resistance, the rotating roller 14 at the lower end moves upward to the guide bracket 3 side to extend the tension spring 10 against the spring force and to move the left and right link members 6, 6 together. The tire stopper B can be linearly lowered until the loading surface 1b 'of the platform 1b is flush with or lower than the loading surface 1b' of the platform 1b. It should be noted that the amount of rise of the tire stopper B is restricted by the slot.
The length is set at 16, 16.

Next, the operation of the vehicle maintenance lift according to the present embodiment will be described. When the platform 1b moves upward by the operation of the lifter 1f and the rotating roller 14 at the lower end of the guide rod 4 separates from the bottom of the storage pit 101, the pulling is performed. As a result, the tension resistance against the spring 10 is eliminated, so that the other ends of the left and right link members 6, 6 are rotated about the rotation center 7 'by the tension spring force of the tension spring 10 to be inclined upward (inclined upward from the horizontal line). ) And the mounting surface 1 of the platform 1b using the tire stopper B and the mounting frame 1 as a guide.
Project linearly upward from the b ′ level (FIGS. 2 and 3). On the other hand, the platform 1b is moved downward by the action of the lifter 1f, the rotating roller 14 at the lower end of the guide rod 4 is pushed up at the bottom of the accommodation pit 101, the horizontal plate 5 is moved upward, and the tension spring 10 is extended due to the tensile resistance. Then, the other end sides of the left and right link members 6, 6 rotate about the rotation center 7 'and are pulled down in a downwardly inclined shape (a downwardly inclined shape below the horizontal line), and the upper end of the tire stopper B is placed on the platform. It is lowered linearly until it is flush with or lower than the loading surface 1b 'of FIG. 1b (FIG. 4).

Next, a second embodiment will be described. This embodiment shows an example in which the above-mentioned linear motion conversion mechanism is constituted by a rack and pinion mechanism. As shown in FIG. 5, the linear motion conversion mechanism C fixes a rack 102 to the long surface b 'of the tire stopper B loosely fitted in the mounting frame member 1 and mounts the rack 102 to the rack frame member facing the rack 102. The extension surface 4 of 1
A guide bracket 103 having a guide hole 103 ′ is protruded from one or the long surface 11-1, and a guide rod 104 having a rotating roller 104 ′ at its lower end is inserted through the guide hole 103 ′ so as to be vertically movable. The upper half of the guide rod 104 is formed by a rack 105, and a compression spring material 107 is interposed between a receiving plate 106 protruding from the top of the long surface 11-1 and the upper end of the guide rod 104. And the support shaft 10 protruding from the extension surface 41 or the long surface 11-1.
The configuration is such that a pinion 108 rotatably mounted on the 7 'is engaged with the rack 102 and the rack portion 105.

In the linear motion conversion mechanism C of the second embodiment,
When the platform 1b descends and the rotating roller 104 'comes into contact with the bottom of the storage pit 101 and the guide rod 104 rises against the spring force of the compression spring 107, the pinion 108 rotates,
As a result, the tire stopper B has its upper end on the loading surface 1.
When the platform 1b is lowered to a level equal to or less than b 'and is equal to or lower than the level, and the platform 1b is raised and the pushing-up resistance of the guide bar 104 is eliminated, the guide bar 104 is pushed down by the spring force of the compression spring 107. Following this, the pinion 108 rotates in the reverse direction, and the tire stopper B is placed on the loading surface 1.
Increase linearly upward from the b 'level.

The present invention is not limited to a buried type, but includes a floor-type vehicle maintenance lift in which a seat plate is directly fixed to a floor.

[Brief description of the drawings]

FIG. 1 is a front view showing a use state of a vehicle maintenance lift according to an embodiment of the present invention, showing a state in which the lift is stored (stored) in a storage pit.

FIG. 2 is an enlarged side view of a principal part with a part cut away, showing a state in which a tire stopper protrudes upward from a loading surface level.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is an enlarged side view of a principal part with a part cut away, showing a state where a tire stopper is lowered to a level flush with a loading surface .

FIG. 5 is a front sectional view of a main part of the second embodiment.

FIG. 6 is a front sectional view showing a conversion mechanism of a conventional example.

FIG. 7 is a front sectional view showing a tire stopper portion of still another conventional example.

[Explanation of symbols]

A: Lift for car maintenance 1b: Platform B: Tire stopper 1b ': Loading surface C: Linear motion conversion mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A 3-82393 (JP, U) JP-A 61-163294 (JP, U) JP-A 2-75492 (JP, U) (58) Survey Field (Int.Cl. ⁶ , DB name) B66F 7/28

Claims (1)

(57) [Scope of request for utility model registration] A left and right platform for supporting front and rear, left and right wheels is configured to be capable of ascending and descending, and an automobile maintenance lift in which a tire stopper is attached to one end or both ends of the platform so as to be able to protrude and retract. Lowering and rising movements raise the tire stopper
A linear motion conversion mechanism that converts motion into
A car maintenance lift, which is mounted across a tire and a tire stopper .