JPH0314673B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to applications such as opening the lid member of an automobile bonnet or trunk lid and applying rust-preventive wax to the engine compartment or trunk compartment. The present invention relates to a lid member opening/closing device for an automobile.

(Prior Art) As a conventional device of this kind, Japanese Patent Application Laid-open No. 162970/1983 discloses a device that automatically opens and closes a lid member using a movable jig equipped with an engaging member that engages with the open end of the lid member. It is known that this was done.

(Problems to be Solved by the Invention) The above publication describes that the movable jig is moved up and down by a vertical movement means, but when opening and closing the lid member, the open end is moved around the hinge of the lid member. The lid member cannot be opened or closed by simply moving the movable jig up and down.

In this case, an articulated swing arm mechanism consisting of a first swing arm and a second swing arm pivotably supported on the first swing arm is used, and an engaging member is attached to the second swing arm. It is also conceivable that the combined movement of both arms causes the engaging member to move along the above-mentioned rotational trajectory, but this rotational trajectory varies depending on the vehicle model, and it is possible to It becomes necessary to teach the movements of both arms correspondingly, which makes the work cumbersome.

SUMMARY OF THE INVENTION In view of these problems, an object of the present invention is to provide an opening/closing device that can simplify teaching work when changing vehicle models and improve productivity.

(Means for Solving the Problems) In order to achieve the above object, the present invention includes a first swing arm that is swingably supported by a shaft at the upper end on a machine frame located above the lid member; a second swinging arm that is rotatably supported at the lower end of the first swinging arm by a shaft at the upper end and provided with an engaging member that engages with the open end of the lid member at the lower end; and the first swinging arm. In the opening/closing device for a lid member, the device includes a first drive means for swinging the second swing arm, and a second drive means for swinging the second swing arm.
When the second swing arm is swung downward by the second drive means with the upper end of the swing arm positioned above the part inside the open end of the cover member, the engaging member engages the open end of the cover member. The first swing arm and the second swing arm are configured to be engaged with each other, and the second swing arm is switchable between a forced swing state and a free swing state by the second driving means. The lid member is opened and closed by switching the second swinging arm to a free swinging state and swinging the first swinging arm by the first drive means.

(Example) Referring to FIGS. 1 to 3, 1 indicates a rust-preventing wax application station;
The vehicle body W placed on the trolley 2 on the transport rails 2a, 2a is brought in and stopped at a fixed position, and the vehicle body W is positioned above the bonnet Wa of the vehicle body W which is stopped at the fixed position at the station 1. A machine frame 3 is provided as shown in FIG.
is installed, and with the bonnet Wa opened by the device 4, a wax coating device ₅₁ consisting of a multi-axis robot placed on both sides of the front of the station 1 applies anti-rust wax to the inner surface of the bonnet Wa and the inside of the engine compartment. At the same time, the door Wb is opened by a door opening/closing device 6 provided on the machine frame 3, and the wax coating device ₅₂ disposed on both sides of the intermediate portion of the station 1 applies wax to the inside of the vehicle body.

The above-mentioned lid member opening/closing device 4 is shown in FIGS. 4 and 5.
As clearly shown in the figure, a first swinging arm 8 is swingably supported on the machine frame 3 by a shaft 7 at the upper end, and a first swinging arm 8 is swingably supported at the lower end of the first swinging arm 8 by a shaft 9 at the upper end. A second swinging arm 11 that is pivotally supported and has an engaging member 10 at its lower end that engages with an open end Wa ₁ of a bonnet Wa serving as a lid member, and a first drive means that swings the first swinging arm 8. 12, and a second drive means 13 for swinging the second swing arm 11. To explain this in more detail, each swing arm 8, 11 is driven by a cross member 8a, 11a, respectively. A pair of left and right arm members 8b, 8b, 11b, 1 connected by
1b, and the first swing arm 8 is pivotally supported by a pair of left and right bearings 14, 14 on the machine frame 3 by a shaft 7 horizontally installed at the upper ends of the arm members 8b, 8b. 1. The driving means 12 is composed of an air servo cylinder 12a provided in the machine frame 3, a fan-shaped gear 12b interlocked with the air servo cylinder 12a, and a pinion 12c fixed to the shaft 7 that meshes with the gear 12b. The first swing arm 8
The second swing arm 11 is provided with a swing motion in the front and back direction about the shaft 7, and the second swing arm 11 is moved by a shaft 9 horizontally disposed at the upper end of the arm members 11b, 11b. 8 arm members 8b, 8b
The air servo cylinder 13a is pivotally supported between the lower ends of the air servo cylinder 13a, and the second driving means 13 is provided on the machine frame 3, and the cylinder 1 is pivotally supported on the shaft 7 at the upper end of the first swing arm 8.
3a and the sprocket 13b interlocked with the shaft 9.
It is composed of a sprocket 13c fixed to the sprocket 13c, and a chain 13d stretched between the sprockets 13b and 13c, and the expansion and contraction of the cylinder 13a causes the second swinging arm 11 to move in the front-rear direction about the shaft 9. The oscillation was made to be given. The engagement member 10 includes a bracket 10a attached to the lower end of each arm member 11b of the second swing arm 11.
A lower receiving roller 10b provided on the bracket 10a and an upper pressing roller 10d attached to the bracket 10a via a lever 10c form the bonnet Wa, which is a lid member.
The open end Wa ₁ of the bonnet Wa 1 is configured to be sandwiched from above and below, and the bonnet Wa 1 is a rear opening type bonnet Wa 1 as shown in the fourth diagram, which has a hinge Wa ₂ at the front end in the illustrated one.
The engaging member ₁₀ , that is, both rollers 10b,
10d are provided in a pair on both the front and rear sides of the bracket 10a.

Further, the second swing arm 11 is attached to the bonnet Wa.
When opening and closing, it is possible to switch freely from the forced rocking state by the second driving means 13 to the automatic rocking state, and in this case, both chambers of the cylinder 13a, which is the driving source of the driving means 13, are opened to the atmosphere. Alternatively, the open end of the bonnet Wa of the engaging member 10 may be
In order to prevent accidental separation from Wa ₁ , air is introduced at low pressure into one chamber of the cylinder 13a that presses the second swing arm 11 in the direction of engagement with the open end Wa ₁ . Also good.

In the drawing, reference numeral 15 denotes a posture holding device that holds the bonnet Wa in a predetermined fully open posture, and a clamp member 15c that is moved laterally back and forth by a cylinder 15b is attached to a pair of left and right brackets 15a, 15a hanging from the machine frame 3. The clamp members 15c are configured to grip the bonnet Wa from both left and right sides.

Note that the holding device 15 is a rear-opening bonnet.
Front and back 1 for Wa and front-opening bonnet for Wa
It is provided in pairs.

In the drawing, Wc is the open end Wa1 of the bonnet Wa to hold the bonnet Wa slightly open.
A spacer provided in advance between the two is shown.

Of course, it is also possible to open and close the trunk lid using the opening/closing device 4.

(Function) In the case of the rear opening type bonnet Wa, the position shown by A in FIG. The actuator swings from the origin position to the engagement start position shown as B in FIG. 4 according to the teaching data, and presses the presser roller 10d of the engagement member 10 on the front side of the lower end to the open end Wa ₁ at the rear end of the bonnet Wa. bring it into contact with.

Next, the second swing arm 11 is placed in a free swing state, and the first swing arm 8 is caused to swing forward by the first drive means 12.
The swinging arm 11 moves together, and first, as shown in FIG.
At the engagement completion position shown in _FIG .
When the first swing arm 8 subsequently swings, the second swing arm 11 moves toward the bonnet Wa while the engagement member 10 is engaged with the open end Wa ₁ .
The open end Wa ₁ swings along the rotation trajectory T around the hinge Wa ₂ at the front end of the hood, and the bonnet Wa is in the fully open position shown at D in Fig. 4. It will be opened in

Therefore, even if the rotation locus of the open end Wa ₁ of the bonnet Wa changes due to a change in the vehicle model, if the movement of both swing arms 8 and 11 from the origin position A to the engagement start position B is taught, the movement will be easy from now on. The bonnet Wa can be reliably opened simply by swinging the first swing arm 8 to the fully open position D.

Furthermore, if the engaging members 10 are provided on both the front and rear sides as in the embodiment, it is possible to freely adapt to vehicle models having a front-opening bonnet Wa, that is, as shown in FIG. The movable arm 11 is swung from the front origin position A to the rear engagement start position B according to the teaching data, and the presser roller 10d of the rear engagement member 10 is moved to the open end Wa ₁ at the front end of the bonnet Wa. If the second swing arm 11 is brought into contact and then the first swing arm 8 is moved backward with the second swing arm 11 in the free swing state, the engagement member 10 will be in the engagement completion position C in the same manner as above. After engaging with the open end Wa ₁ , the engaging member 10 follows the following movement of the second swing arm 11 to move the engaging member 10 along the rotational trajectory T of the open end Wa ₁ around the hinge Wa ₂ at the front end of the bonnet Wa. , and the bonnet Wa is fully opened at the fully open position D.

In addition, at the origin position A described above, the upper end of the second swing arm 11 is positioned above the part inside the open end of the lid member Wa, and the second swing arm 11 is moved downward from the origin position A. By swinging, the engaging member 10 is engaged with the open end of the lid member Wa. According to this, even if the second swinging arm 11 is brought into the free swinging state, the engaging member 10 does not come off from the open end of the lid member Wa, and the lid is closed while the second swinging arm 11 is in the free swinging state. Component Wa can be opened and closed.

(Effects of the Invention) As described above, according to the present invention, even if the rotation locus of the open end of the lid member is different, the first and second swing arms are set at the initial position so that the engaging member engages with the open end. Once the movement is taught, the lid member can be reliably opened by moving the engaging member along the rotation trajectory without teaching the subsequent movement, making teaching work easy in preparation for changing vehicle models. This has the effect of improving productivity.

[Brief explanation of the drawing]

Fig. 1 is a plan view of a rust-preventing wax application station equipped with the device of the present invention, Figs. 2 and 3 are its side and front views, respectively, and Fig. 4 shows the main points during the opening/closing operation of a rear-opening bonnet. Enlarged side view of part 5
The figure is a sectional view taken along the line -- in FIG. 4, and FIG. 6 is a side view similar to FIG. 4 when the front-opening bonnet is opened and closed. Wa...Bonnet (lid member), 3...Machine frame, 4...
Lid member opening/closing device, 7, 9... shaft, 8... first swinging arm, 10... engaging member, 11... second swinging arm, 1
2...first driving means, 13...second driving means.

Claims (1)

[Scope of Claims] 1. An opening/closing device for a lid member such as a bonnet or trunk lid of an automobile, which comprises a first shaft rotatably supported on a machine frame located above the lid member by a shaft at the upper end thereof.
a second swing arm, which is swingably supported at the lower end of the first swing arm by a shaft at the upper end, and has an engagement member at the lower end that engages with the open end of the lid member; In the device comprising a first drive means for swinging the first swing arm and a second drive means for swinging the second swing arm, the upper end of the second swing arm is connected to the open end of the lid member. The first swinging arm is configured such that the engaging member is engaged with the open end of the lid member when the second swinging arm is pivoted downward by the second driving means while the second swinging arm is positioned above the inner portion. a swinging arm and a second swinging arm, the second swinging arm can be freely switched between a forced swinging state by the second driving means and a free swinging state, and the second swinging arm is in a free swinging state. 1. A lid member opening/closing device for an automobile, characterized in that the lid member is opened and closed by swinging the first swinging arm by the first driving means. 2. A lid member for an automobile according to claim 1, characterized in that a pair of engagement members are provided on both sides of the lower end of the second swing arm in the swing direction of the second swing arm. Switchgear.