JPS6127784Y2 - - Google Patents

Description

[Detailed Description of the Invention] The disclosed technology belongs to the field of vibration-proof structure technology centered on back doors for rear openings of automobiles.

Therefore, in this invention, a back door that opens and closes from a rearward opening provided at the rear of the body of a liftback type automobile is pivotally supported via a hinge provided at the top of the body, and the back door is pivoted through a hinge provided at the top of the body. This is an invention related to the back door structure of an automobile provided in order to prevent the generation of abnormal noise due to contact between the body and the door when the door is closed, and in particular, a pipe member is installed in the space formed by the outer panel and the inner panel of the back door. It is horizontally fixed in a beam shape, and a pair of hook pins coated with rubber or the like are fixed concentrically to the pipe member on the back door side, and on the other hand, on the back door opening side of the body side. This invention relates to a back door structure for an automobile, in which a notch-shaped stopper with a coating of rubber or the like is fixedly attached to a corresponding portion of the door, and is engaged with the hook pin.

As is well known, in recent years, many cars such as wagon type cars and lift truck types have been designed with larger openings at the rear of the body to make it easier to let in light and take things in and out. As a result, the area of the opening/closing back door, which is pivotally supported via a hinge on the upper part of the body, becomes larger, and as a result, the weight of the door increases. Various door anti-vibration measures are being developed.

Generally, the means of vibration isolation that has been taken up to now is to provide a down stopper to restrict vertical vibration or a side stopper to restrict lateral vibration.

The purpose of this invention is to further improve the anti-vibration measures for the back door of the automobile described above, by installing a pipe member horizontally inside the lower part of the window opening of the back door, and using the pipe member to suppress the door movement in the lateral direction. The present invention aims to provide an excellent automobile backdoor structure that increases vertical vibration damping performance by engaging and attaching stoppers fixed concentrically with the pipe member to the body openings at both ends of the door. It is something to do.

The structure of this invention in accordance with the above-mentioned purpose is to open and close the back door of an automobile via a hinge at the top of the body, and to fix the pipe member horizontally between the outer panel and the inner panel at a predetermined position to prevent the door from moving in the lateral direction. In addition, a hook pin fixed concentrically with the pipe member is provided on the side of the back door, and when the back door is closed at the door opening, the hook pin closes the notch-shaped part provided at the door opening. By engaging with the stopper and interlocking with the body to suppress vertical door movement, it is possible to prevent abnormal noises caused by contact between the body and the door when the vehicle is running or when the door is closed. This is a summary.

Next, one embodiment of this invention will be described below based on the drawings.

Reference numeral 1 is a wagon type automobile, and a rear opening 3 is provided at the rear of the body 2, and a back door 6 is provided with damper stays 5, 5 via hinges 4, 4 at the upper part of the body 2. A lock 7 provided at the center of the lower end of the back door 6 opens and closes the back door opening 8 of the body 2.
The door is closed by engaging a striker 9 provided at the center of the lower part of the door.

As shown in FIGS. 4 and 6, between the outer panel 10 and the inner panel 11 of the backdoor 6, there are support bosses 13 which are similarly welded and fixed to reinforcements 12 which are welded to the inside of both ends of the inner panel 11. On the other hand, a pipe member 14 having a circular cross section is horizontally fixed, and is inserted into a hole 17 concentrically with the pipe member 14 via a hook pin 15 and a spacer 16 on both sides of the back door 6, and is fixed as appropriate. .

On the other hand, on the inside 18 of the door opening 8 of the body 2, as shown in FIGS. 4 and 5, a notch-shaped stopper 21 is provided integrally with a reinforcement 22 at a portion extending between the side frame 19 and the quarter inner panel 20, and is secured by a bolt 23. Fixed.

Both stoppers 21, 21 are provided with coatings 24, 25 made of rubber material, respectively.

Note that 26 is a weather strip.

Therefore, in the closed door state, the back door 6 itself is connected to the pipe member 1 as shown in FIG.
4 suppresses the door movement in the lateral direction, and is linked with the body 2 through the engagement of the hook pin 15 and the notch stopper 21 to control the vertical movement of the door, thereby producing a sufficient door vibration damping effect.

In the above-mentioned configuration, after loading and unloading cargo from the rear floor with the back door open as shown in FIG. ,
The lock 7 engages the striker 9 to close the lid, and the hook pins 15 on both sides of the back door 6
engages with the notch stopper 21 on the inside body 18 of the back door opening 8 to ensure positioning.

Therefore, when the door is in the closed state, the pipe member 14 is suspended horizontally in the back door 6 as shown in FIG. By being dynamically connected to the rear of the body 2 via the stopper, door vibrations are not suppressed by repulsion or massing force like conventional stoppers, so vibrations can be more reliably damped.

It goes without saying that the embodiment of this invention is not limited to the above-described embodiment; for example, the hook pin and the notch stopper may be installed in reverse.

Furthermore, the target vehicle types are not limited to wagon types, but can also be applied to liftback types, cab-over types, etc.

As described above, according to this invention, a pipe member is horizontally fixed between the outer panel and the inner panel of the back door, which is opened and closed via the hinge at the upper part of the body, at the opening of a car having a back door such as a wagon type. Even if the opening is made larger and the area of the back door is increased to make it easier to let in light and take things in and out, the pipe member and the stopper directly connected to the back door will still maintain sufficient vibration isolation. Excellent effects can be achieved that will satisfy your needs.

By providing hook pins on both sides of the back door concentrically with the pipe member, it becomes substantially the same as if a hollow pipe was installed through the back door, and the hook pins were provided on the back door opening side at the rear of the body. By engaging with the notch-shaped stopper, the pipe member of the back door is indirectly integrally connected to the body, and an excellent effect is achieved in which the vibration damping properties of the back door are further improved.

Further, the stopper engagements on both sides are directly connected to the pipe members, so that even if the door is repeatedly closed over time, there will be no looseness and there will be no deterioration in the stopper function.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention,
Figure 1 is a perspective view of the rear of the car when the back door is open, Figure 2 is a perspective view of the lock, Figure 3 is a perspective view of the striker, Figure 4 is a plan cross-sectional view of the view in Figure 1, and Figure 5 is a perspective view of the rear of the car when the back door is open. The first figure is a partial explanatory view, and FIG. 6 is an assembly explanatory view in the first figure. 1...Automobile, 2...Body, 3...Opening,
4... Hinge, 6... Back door, 10... Outer panel, 11... Inner panel, 14... Pipe member, 15... Hook pin, 8... Opening, 18... Inside, 21... Notch stop.

Claims (1)

[Scope of utility model registration request] A pipe member horizontally fixed between an outer panel of the back door and an inner panel of the back door in a back door structure that is pivotally supported by an upper hinge to an opening provided at the rear of an automobile body and can be opened and closed. a hook pin provided on the back door side concentrically with the pipe member; and a notch-shaped stopper provided on the back door opening side opposite to the back door side and engaged with the hook pin. A back door structure for an automobile characterized by comprising: