JP2580524Y2 - Sliding door swing device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a swing device for a sliding door in vehicles such as trucks and van-type vehicles.

[0002]

2. Description of the Related Art In this type of sliding door swing device, an upper and lower door base is slidably provided along the upper and lower edges of a door opening of a body of a vehicle. It is provided so as to be able to move in parallel via a link mechanism called a four-bar link mechanism or a four-bar parallel link mechanism. For example, in the operation explanatory view of the link mechanism shown in FIG.
Reference numeral 06 is provided so as to be able to move in parallel via a link mechanism 109 having a pair of front and rear crankshafts 110. Each shaft portion 111, 113 of each crankshaft 110 is rotatably provided on the door 106 or the door base 108, respectively. 9A shows a shift state in which the door 106 shifts to the outside position, and FIG. 9B shows a closed state.

In the above-described sliding door swing device, when the door 106 is closed, the door 106 does not protrude outward beyond the door base 108.
The door 106 and the door base 108 may be positioned (stored) on the same axis (see FIG. 9B).
However, in this case, the following two problems occur. (1) When the door 106 is shifted from the closed state, if the door 106 and the door base 108 are located on the same axis, the rotational force of one crankshaft 110 is difficult to transmit to the other crankshaft 110. So door 1
06 cannot be shifted smoothly. (2) Since the dimensional error between the two points of the door base 108, that is, the pitch error between the center points of the eccentric shaft portions 113 of the two crankshafts 110 on the door base mounting side cannot be absorbed, the shift movement of the door 106 (reverse shift). ) Is lost.

As a conventional example which solves the above-mentioned problem (1),
There is a sliding door swing device shown in a side view in FIG. 10 and a simplified perspective view in FIG. As shown in FIG. 10, upper and lower door bases 208 are slidably provided along upper and lower edges of a door opening 204 of a body 202 of a vehicle. As shown in FIGS. 10 and 11, the door 206 is provided to be able to move in parallel to both door bases 208 via a link mechanism 209 having a pair of front and rear crankshafts 210. Each shaft of each crankshaft 210 is connected to the door 206 or the door base 208.
Are rotatably provided. Swing arms 214 are provided on the door mounting side shafts (attached to 211) of both crankshafts 210 toward the front (outward) of the door, respectively, and connecting rods 215 are provided at the ends of the two swing arms 214. Are rotatably connected to each other via connection pins (symbols omitted). As shown in FIG. 10, a handle 220 is attached to the shaft portion 211 of the front crankshaft 210.

Therefore, when the door 206 is shifted and opened or vice versa and closed, the rotational force of the front crankshaft 210 rotated by the handle 220 is moved by the swing arm 214 and the connecting rod 215. The transmission to the rear crankshaft 210 allows the door 206 to shift smoothly. In addition, connecting rod 21
5, a turnbuckle mechanism (not shown) is provided to absorb a pitch error between the center points of the connection pins.

[0006]

According to the prior art,
Although the problem (1) is solved, the problem (2) still remains.
The shift movement of 06 becomes heavy. In addition, the swing arm 214
In addition, since the connecting rod 215 protrudes outside the door, not only the appearance is poor, but also there is a risk of interference with some articles.

The applicant of the present application has proposed Japanese Utility Model Application No. 4-63605 (not disclosed at the time of filing) in order to solve the above problems. In the case of the prior invention, the swing arm is fitted to the eccentric shaft portion of the crankshaft and connected by bolts, so that the connection portion has high strength instability, rattling or high fitting. There is a drawback in that accuracy is required.

Accordingly, the present invention has been made to solve the above-mentioned problems, and its object is to make it possible to smoothly shift the door, to improve the appearance and safety, and to improve the strength. It is an object of the present invention to provide a sliding door swing device that does not involve anxiety.

[0009]

Means for Solving the Problems In order to solve the above problems, the present invention is configured as follows. In other words, the sliding door swing device according to the present invention has a door base slidably provided via rollers along the rail at the upper edge of the door opening of the body, and a pair of crankshafts with respect to the door base. A door provided so as to be able to move in parallel via a link mechanism, and a swing arm is integrated with the upper crank arm portion of the pair of crankshafts on the door base mounting side by welding the bases thereof by welding, and Both ends of the connecting rod are rotatably connected to the distal ends of the two swing arms, respectively, and the lower crank arm of the pair of crank shafts is A roller is provided for rolling on the rail at the lower edge of the opening of the body, and the door base is provided with a door cover of the pair of crankshafts. The door base is provided with at least two rollers for rolling the rail at the upper edge of the door opening. I have.

[0010]

In the sliding door swing device according to the present invention having the above-described structure, the rotation force is transmitted between the two crankshafts of the link mechanism by the swing arm and the connecting rod. In addition, a dimensional error between two points of the door base, that is, a pitch between center points of the shaft portions of the two crankshafts on the door base mounting side, due to relative movement of the two separated door bases with the shift movement of the door. Errors are absorbed and the door is stably moved along the rails with the upper and lower parts being supported by the two rollers of the door base and the rollers of the lower crank arm. In addition, since the swing arm and the connecting rod are located behind the door of the door base, they do not protrude and are exposed to the outside of the door. In addition, the swing arm is integrated with the crank arm by welding to assemble and connect. It is simpler and stronger than the case.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. The present embodiment is applied to a rear door of a full-opening slide door of a vehicle, for example, a cargo truck having a box-type luggage compartment, and a swing device will be described together with the full-opening slide door. In FIG. 2 showing a simplified side view of a cargo truck, a vehicle 1 includes a side of a body 2 having a cab 3,
That is, a rectangular door opening 4 is provided on the side surface of the luggage compartment, and is opened almost all over the side surface. The door opening 4 is provided with a front door 5 and a rear door 6 of a sliding door type. The two doors 5 and 6 are substantially flush with the side surface of the body and close the door opening 4.

In this full-opening slide door, by opening and closing the front door 5 and the rear door 6, a total of three open and closed states shown in the schematic plan views of FIGS. 3 (a) to 3 (c) are obtained. . (A) is a fully closed state in which both doors 5 and 6 are closed, (b) is a rear half open state in which the rear door 6 is opened, (c)
Is a fully opened state where both doors 5 and 6 are opened.

Next, a configuration relating to the sliding doors of the two doors 5 and 6 will be described. FIG. 5 is a simplified vertical cross-sectional view of a full-opening sliding door, FIG. 6 is a perspective view of a front door and a rear door, and FIG. 4 is an explanatory view showing the relationship between a guide rail and a guide roller. I have. Body 2
On the side surfaces of the upper and lower edges of the door opening 4, an appropriate number of first guide rollers 8 are supported so as to be rotatable about shafts (reference numerals are omitted).

In FIG. 5, upper and lower rail members 10 are provided substantially vertically symmetrically on the rear upper and lower edges of the front door 5. Each rail member 10 is integrally formed with a pair of first and second guide rails 11 and 12 having a substantially C-shaped cross section and being parallel to each other. The grooves of the upper and lower first guide rails 11 are opened to the indoor side, and the first
Are rotatably engaged with each other.

The groove of the second guide rail 12 located above the upper first guide rail 11 is open to the outside of the room. The groove of the second guide rail 12 located below the lower first guide rail 11 is open to the lower side. On the upper second guide rail 12, a second guide roller 15 disposed on a door base 14 of the rear door 6, which will be described later, and on the lower guide rail 12, a crank arm unit described below related to the rear door 6. The second guide rollers 15 attached to 23 are rollably engaged with each other. As shown in FIGS. 4 and 6, both guide rails 11 and 12 extend substantially toward the rear end of the rear door 6 toward the rear of the front door 5.

Next, a swing device of the rear door 6 and a structure attached thereto will be described. As shown in the longitudinal sectional view of FIG. 5 and the perspective view of FIG. 6, the rear door 6 has a door base 14 which is a reference position for a shift operation when assembled to the body 2. This door base 14 is a rear door 6
And is separated into two parts in the front-rear direction.
Guide rollers 15 are rotatably mounted on each of the two front and rear rollers.

The door base 14 and the rear door 6 are connected via a link mechanism 20 so that the rear door 6 can be moved in parallel in the front and back directions. The rear door 6 is in a shifted state in which the position shown by the solid line in FIG. 6 is shifted to the outside position, and the position shown by the two-dot chain line in FIG. 6 is in the closed state. FIG. 1 is a diagram for explaining the operation of the link mechanism 20, in which (a) shows a shift state of the rear door 6, and (b) shows a closed state thereof.

The link mechanism 20 is a so-called four-bar parallel link mechanism, and is mainly composed of a pair of front and rear crankshafts 21. As shown in FIG. 5, each of the crankshafts 21 is fitted to a central shaft portion 22 rotatably provided on the rear door 6 through the bush 7 and a small-diameter upper end portion of the central shaft portion 22. The upper crank arm portion 23 integrated by welding with the center shaft portion 2
2 comprises a lower crank arm 23 fitted to the lower end square shaft and fixed by bolts 9 and an eccentric shaft 24 provided at the tip of the upper and lower crank arms 23.

The upper eccentric shaft portion 24 is a shaft portion on the door base mounting side.
And the upper crank arm 23
Are rotatably fitted. The lower eccentric shaft 2
Reference numeral 4 denotes a roller support pin, which is integrated with the lower clamp arm 23 by welding, and the lower second guide roller 15 is rotatably attached to the lower clamp arm 23.

As shown in FIGS. 5 and 6, the upper eccentric shaft portion 2 erected on the upper surfaces of the front and rear door bases 14 is provided.
In addition to the crank arm 23, the base 4 is rotatably fitted to the upper surface of the crank arm 23 in a state where the base ends of the swing arms 25 are overlapped. The crank arm portion 23 and the swing arm 25 are prevented from coming off by a split pin or the like, and their overlapping surfaces are integrated with each other by welding. The two swing arms 25 extend toward the back of the door so as to be parallel to each other,
Both ends of the connecting rod 26 are rotatably connected to the distal end via pins 27, respectively.

Accordingly, the link mechanism 20 shifts the rear door 6 from the state shown in FIG. 1B to the state shown in FIG. 1A, and conversely, shifts the rear door 6 from the state shown in FIG. When the vehicle is shifted in the reverse direction, the rear door 6 is translated with respect to the door base 14. At this time,
The swing arm 25 and the connecting rod 26 transmit the rotational force between the two crankshafts. When the rear door 6 is closed (see FIG. 1B),
The rear door 6 and the door base 14 are located on the same axis, that is, the central shaft portion 22 and the eccentric shaft portion 24 of the crankshaft 23 are located on the same line.

The link mechanism 20 is shown in an exploded perspective view together with the front door 5 and the rear door 6 in FIG. The crankshaft 21 is divided into two parts at the center shaft part 22 due to its assembly, and each of the divided parts is inserted into the rear door 6 from the up and down direction to form a square hole provided at a butt part of each part. The recesses 28 and the prismatic projections 29 are integrally rotatably coupled with each other with an insertion relationship.

The rear crankshaft 21 incorporates a torque transmission handle (door opening / closing operation handle) 30 between the divided parts. FIG. 8A is a perspective view of the torque transmission handle, and FIG. 8B is a cross-sectional view thereof. In FIG. 8, the torque transmission handle 30 is provided with a square hole-shaped recess 28 and a prismatic projection 2 with respect to the butted portion of each of the divided portions of the rear crankshaft 21.
9, a connecting tubular portion 31 rotatably coupled to the connecting tubular portion 9, a protruding piece 32 protruding outside the connecting tubular portion 31, and a handle rotatably attached to the protruding piece 32 with a pin 33. And a lever 34,
The rear door 6 is disposed on a window 6 a opened on the outer surface.

The state shown by the solid line in FIGS. 8A and 8B of the torque transmission handle 30 corresponds to the shift state of the rear door 6 (see FIG. 1A). From this state, the handle lever 34 is pivoted around the pin 33 as shown in FIG.
At the left side to rotate and protrude (see FIG. 8).
(See the two-dot chain lines A in FIGS. 8A and 8B), and further push it into the window 6a of the rear door 6 (see the two-dot chain line B in FIG. 8A). b) rear crankshaft 21 and swing arm 2 as shown in FIG.
5 through the connecting rod 26 to the front crankshaft 21 and the rear door 6 is closed.
Contrary to this, when the handle lever 34 is made to protrude from the window 6a, its turning power is transmitted from the rear crankshaft 21 and the swing arm 25 through the connecting rod 26 as shown in FIG. And transmitted to the front crankshaft 21 to shift the rear door 6 to the outside position.

Next, the opening / closing action of the full-opening slide door for a vehicle configured as described above will be described with reference to FIGS. In the fully closed state shown in FIG. 3A, the rear door 6 is shifted to the outside position via the link mechanism 20 by operating the torque transmission handle 30 and then slid forward, so that the front door 5 is moved up and down. Second guide roller 15 with respect to second guide rail 12
The rear door 6 almost overlaps with the outside of the front door 5 due to the rolling, and a rear half-open state in which the rear half of the door opening 4 is opened is obtained (see FIG. 3B).

Further, by sliding the two doors 5 and 6 forward from the rear half-open state while keeping the two doors 5 and 6 in the overlapped state, the first guide rail 11 is moved forward by the rolling of the first guide roller 8. The two doors 5 and 6 are located in the dead space on the side of the body of the vehicle 1 (that is, the side of the cab), and a fully opened state in which the door opening 4 is fully opened is obtained (see FIG. 3C). The doors 5, 6 opened as described above are closed by the reverse procedure of opening. When the door is opened and closed, the rear door 6 is stably opened and closed while being supported vertically by the two guide rollers 15 of the front and rear door bases 14 and the guide roller 15 of the lower crank arm 23. Is done.

According to the full-opening type sliding door for a vehicle, both doors 5 and 6 are positioned in a dead space (ie, a side surface of the cab) of the side of the body 2 of the vehicle 1 in a sliding door type, and the door opening 4 is fully opened. Can be done. Therefore, it is possible to easily load and unload long-sized items, and also to load and unload the entire width of the door opening 4 without reopening the doors 5 and 6.

Further, according to the swinging device for the rear door 6, the rotational force can be transmitted between the two crankshafts of the link mechanism 20 by the swing arm 25 and the connecting rod 26. In addition, the front and rear door bases 14 relatively move with the shift movement of the rear door 6, so that
The pitch error between the center points of the central shaft portions 22 of the two crankshafts 21, that is, the dimensional error between the two points of the door base 14 is absorbed. By the cooperation between the rotational force transmitting effect of the crankshaft 21 and the dimensional error absorbing effect of the door base,
The smoothness of the shift movement related to the opening and closing of the rear door 6 is improved.

[0029]

According to the present invention, the rotational force can be transmitted between the two crankshafts of the link mechanism, and
By absorbing the dimensional error between the two points of the door base, the smoothness of the shift movement involved in opening and closing the door can be improved, and since the swing arm and the connecting rod do not protrude and are exposed outside the door, And the danger due to the protrusion can be avoided, and the safety is improved.

In the present invention, the swing arm is integrated with the crank arm of the crankshaft by welding, so that the strength can be simplified and the strength can be improved as compared with the case of the bolted type. Since precision of fitting is not required for precision, simplicity in manufacturing can be obtained. Furthermore, regarding the lower side of the guide rail,
By guiding the eccentric shaft portion of the crankshaft to the rail, the door base is eliminated and the structure is simplified and the weight is reduced.

[Brief description of the drawings]

FIG. 1 is an operation explanatory view of a link mechanism.

FIG. 2 is a schematic side view showing a vehicle.

FIG. 3 is an explanatory diagram showing an open / closed state of a full-opening slide door.

FIG. 4 is a schematic side view showing a relationship between a guide rail and a guide roller.

FIG. 5 is a vertical sectional view of a full-opening slide door.

FIG. 6 is a perspective view showing a front door and a rear door.

FIG. 7 is an exploded perspective view showing a rear door.

FIG. 8 is an explanatory view showing a torque transmission handle.

FIG. 9 is an operation explanatory view of a link mechanism showing a conventional example.

FIG. 10 is a side view of a slide door showing a conventional example.

FIG. 11 is a schematic perspective view of the sliding door of FIG. 10;

[Explanation of symbols]

 2 Body 4 Door opening 5 Front door 6 Rear door 8 First guide roller 11 First guide rail 12 Second guide rail 14 Door base 15 Second guide roller 20 Link Mechanism 21 ... Crankshaft 22 ... Central shaft part 23 ... Crank arm part 24 ... Eccentric shaft part 25 ... Swinging arm 26 ... Connecting rod

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B60J 5/06 E05D 15/10

Claims (1)

(57) [Scope of request for utility model registration] 1. A door base slidably provided via a roller along a rail at an upper edge of a door opening of a body, and can be translated with respect to the door base via a link mechanism having a pair of crankshafts. Provided on the upper crank arm portion on the door base mounting side of the pair of crankshafts, the swing arms of which are integrated with their bases by welding and extend toward the back of the door, Both ends of a connecting rod are rotatably connected to the distal ends of the two swinging arms, respectively, and a rail at the lower edge of the opening of the body is attached to the lower crank arm of the pair of crankshafts. Rolling rollers are provided, and the door base is separated into two parts each having a shaft portion on the door base mounting side of the pair of crankshafts. A sliding door swing device wherein each of the separated door bases is provided with at least two rollers for rolling on a rail at an upper edge of the door opening.