JPS6285768A - Bumper rubber of on-off body for vehicle - Google Patents

Abstract

PURPOSE:To aim at secureness for a sufficient lift function, by constituting bumper rubber to be elastically brought into contact with a body opening edge part at the time of closing the door of an on-off body from a bumper rubber body to be attached to the on-off body and an elastic body to be attached to this body and smaller in a spring constant than the body's. CONSTITUTION:Bumper rubber 11 is constituted of a bumper rubber body 12, and a coil spring 13 consisting of an elastic body being smaller in a spring constant than the body 12 molded solidly with this body 12. And, the bumper rubber body 12 inserts the snap part formed in the center of its head part into the fitting hole 15 formed in a back door inner panel 8. And, a protector 16 consisting of a rubber material is solidly molded at a lower end of the coil spring 13, whereby a metal touch between the coil spring 13 and a body opening edge part 5 is prevented from occurring at the time of closing a back door. With this constitution, a sufficient lift function is securable and, what is more, improvement in a outward show and reduction in wind rattling both are attainable.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a bumper rubber for an opening/closing body for a vehicle.

Conventional technology For example, in vehicle opening/closing bodies such as back doors, engine hoods, and trunk lids, a bumper rubber is attached to the free end of the opening/closing body to provide a cushioning effect when the opening/closing body is closed. This will be explained in detail with reference to FIGS. 7 to 9, taking a back door as an example of an opening/closing body.

Reference numeral 1 denotes a rear opening of the vehicle body, and a bank door 2 is attached to the rear opening 1 via a door hinge (not shown) so as to be openable and closable. A bumper rubber 4 made of a rubber block 1' is attached to the free end of the back door 2, in this example, the back door inner panel 8 on the back side of the lower end 3.
When the back door 2 is closed, the bumper rubber 4 is connected to the vehicle body opening edge 5 to provide a buffer. In setting the size of the bumper rubber 4, when the back door 2 is closed, the back door 2 lifts up and the weather strip 7 provided on the peripheral flange 6 of the rear opening 1 of the vehicle body is cut off by 81 mm on the back door inner panel. The settings are made so that the door lock mechanism 9 will not be properly engaged with the striker 10 on the vehicle body or the door lock mechanism 9 will not be properly engaged with the striker 10 on the vehicle body side. This similar structure is, for example,
No. 9-69073.

Problems to be Solved by the Invention Even if the size of the bumper rubber 4 is set appropriately,
At low temperatures, the elasticity of the bumper rubber 4 becomes low -1, and when the back door 2 is opened, the reaction force that lifts the back door 2, that is, the lift function cannot be obtained, and the lower end 3 of the back door 2 and the vehicle body It has been pointed out that there is a problem in that a sufficient gap δ1 for inserting a finger between the first member and the bumper bumper 25 of Example 5 cannot be obtained, which hinders the door opening operation. On the other hand, in recent years, in order to improve the appearance and reduce wind noise, there has been a desire to minimize the parting gap δ between the lower end 3 of the back door 2 and the rear bumper 25 when the back door 21 is closed. has been done. In order to satisfy this request, the protrusion height h of the bumper rubber 4 mentioned above must be
1!7: Although it is small and stiff, it impairs the functions of the bumper rubber 4, that is, the cushioning effect and lift function. Therefore, the present invention was developed by Weathers) to provide the opening/closing body with a sufficient lift function without affecting the sealing performance around the opening/closing body using the IJ knob or the locking function of the door lock mechanism. To provide a bumper rubber for an interior opening/closing body in which the parting gap between the free end and the vehicle body side can be made as small as possible when the door is closed.

Means for Solving the Problem The bumper rubber is compressed between the opening/closing body and the opening edge of the vehicle body when the bumper rubber body is attached to the opening/closing body and the opening/closing body is closed. The bumper rubber body is made of an elastic body having a spring constant smaller than that of the bumper rubber body.

Embodiments Hereinafter, Embodiment 1 of the present invention will be described in detail with reference to the accompanying drawings, with the same reference numerals used for the same parts as in the conventional structure.

In FIG. 1, a bumper rubber body 11 includes a bumper rubber body 12 made of a rubber material, and a bumper rubber body 1 made of a rubber material.
2 and a coil spring 13 which is an elastic body with a small spring constant. A snap portion 14 is formed in the center of the bumper rubber body 12, and the bumper rubber body 12 forms the snap portion 14 on the back door inner panel 8, and is inserted into the T fitting hole 15 and engaged. and then install it. Further, a protector 16 made of a rubber material is integrally molded on the lower end of the coil spring 13 to prevent metal contact between the coil spring 13 and the opening edge 5 of the vehicle body when the back door 2 is closed.

According to the structure of this embodiment, when the back door 2 is closed in the evening, the bumper rubber main body 12 and the coil spring 13 are compressed and deformed between the vehicle body opening edge 5 and the back door inner panel 8, and exert a buffering function. do. When the back door 2 is opened, that is, when the lock mechanism 9 shown in FIG. 2 lower end 3 and rear bumper 25
A sufficient gap δ1 (see Figure 9) for inserting a finger between the two can be secured. Here, since the coil spring 13 has a large downward stroke, when trying to obtain a bumper rubber with the same protrusion 11h, the bank door 2
The parting gap δ between the lower end 3 of the back door 2 and the rear bumper 25 when the door is closed can be made as small as possible. Further, since the lift function is obtained by the cooperation of the elasticity of the coil spring 130 and the elasticity of the bumper rubber body 12, even if the elasticity of the bumper rubber body 12 decreases at low temperatures, this coil spring 13 The elasticity ensures sufficient lifting ability when descending.

FIG. 2 shows different examples of how the bumper rubber body 12, coil spring 13, and protector 6 are assembled. A spiral g12a is attached to the outer periphery of the bumper rubber body 12oM) and the protector 16, respectively.
, 16a are formed, and these subaira/' m1
2a and 15a are assembled by screwing the ends of the coil spring 13 together. Further, a socket portion 12b is formed on the lower surface of the bumper rubber base. On the other hand, a plug portion 16 b is formed on the upper surface of the protector 16 to engage with the socket portion 12 b when the back door 2 is closed.

Therefore, in this embodiment, when the back door 2 is closed, the coil spring 13 is deformed by a predetermined negative deflection.
The socket part 12b2 of the bumper rubber main body 12 contacts the plug part 16b of the protector 16, so that a so-called stopper effect that restricts the bending deformation f of the bumper rubber 11 to a certain degree is obtained, and the IJ knob σ
’ strong pressure tank, lower end 3 of back door 2 and rear pan bar 2
5 can be avoided. Further, by engaging the socket portion 12b of the bumper rubber main body 12 and the plug portion 16b of the protector 16, sideways movement of the coil spring 13 is prevented, and the deflection characteristics as set can be obtained. Further, spiral grooves 12a and 16 provided on the outer periphery of the bumper rubber body 12 and the outer periphery of the protector 16
Since the end of the coil spring 13 is screwed into a,
The protruding height of the bumper rubber 11 can be arbitrarily adjusted by adjusting the screw engagement.

In the embodiment shown in FIGS. 3 to 6, the bumper rubber body 17.
A double cylindrical housing member 17a formed of an inner cylinder 18 and an outer WJ 19, and the upper end of the housing member 171L (two cap members 17b) are connected to the bottom of the coil spring 13. ＠＠＼Uji foot member 1
It is stored and arranged in 7a.

In FIG. 3, the housing member 17 & of the bumper rubber body 17 is a hollow cylinder 18, and the inner cylinder 18 is a hollow cylinder 18.
It consists of a cylindrical outer periphery 19 that is integrally molded and has an opening at its upper end at a required interval outwardly from the bottom surface 21 of the holder. Further, the lower end of the cylinder 18 is provided with a snap portion 14 that is inserted into and engaged with the fitting hole 15 of the back door inner panel 8. The cap member L7b includes the cap member 17.
A flange portion 22 that engages with the outer periphery of the upper end of the outer cylinder 19 is provided on the periphery of the cap member 17b, and an insertion hole 23 through which the snap portion 14 of the housing member 17a is inserted is provided on the flat plate surface of the cap member 17b. It is. The coil spring 13 is connected to the inner cylinder 18 and outer cylinder 1 of the housing member 17 &
9 and the cap member 17b.

According to this embodiment structure, when the bank door 2 is closed, when the coil spring 13 stored and arranged in the space 20 between the inner WJ 18 and the outer cylinder 19 of the housing member 1711 is bent, the inner cylinder 18 and the outer cylinder 19 are bent. This bottom surface acts as a protector by preventing coiling. Further, since the coil spring 13 is hidden by the inner tube 18 of the housing member 17&, the outer wJ19, and the cap member L7b, good sealing performance and antirust effect can be obtained.

In the embodiment shown in FIG. 4, when the outer circumference of the cap member 17b is extended, the flange portion 22 is bent to the lower end of the flange portion 22 as the housing member 17a comes into elastic contact with the vehicle body opening plate when the back door is closed. As a result, the opening edge 5 of the vehicle body and the lower end of the flange portion 22 come into elastic contact, and a stopper effect is obtained that limits the amount of bending to a certain level.

In the embodiment of FIG. 5, the housing member 17 of FIG.
The inner cylinder 18 and outer cylinder 19 of a are shaped like bellows.

By doing so, when the back door 2 is closed, the housing member 17a' bends and bends, thereby improving elasticity.

In the embodiment of FIG. 6, the housing member 17a of FIG.
Of these, fi 18 is solid, and its lower end 24 is approximately convex.

In this embodiment, when the back door 2 is closed, the lower end portion 24 of the inner tube 18 comes into elastic contact with the vehicle body opening ^, thereby exerting a stopper effect. In addition, the inner cylinder 18' and inner cylinder 18' are used to improve the ability to prevent horizontal vibration of the coil spring 13.

In the above embodiment, the bumper rubber body 12°L7
Although the bumper rubber bodies 12 and 17 are secured to the back door inner panel 8 via the snap portions 14Y, the means by which the bumper rubber bodies 12 and 17 are broken is not limited to this.

Is this invention more effective than the invention? According to =, sufficient lifting function can be obtained due to the low elasticity of the bumper rubber. In addition, since the deflection stroke of the coil spring is large when the opening/closing body is closed, the parting gap between the free end of the opening/closing body and the vehicle body side member can be minimized, which not only improves the appearance but also reduces wind noise. This has great practical effects.

[Brief explanation of drawings]

Figure 1 is a sectional view showing one embodiment of the present invention, Figure 2.3.4
, 5.6 are sectional views showing different embodiments of the present invention, FIG. 7 is an external view of an automobile equipped with a bank door, and FIG. 8 is an external view of an automobile equipped with a bank door.
The figure is a cross-sectional view corresponding to the line ■-■ showing the conventional structure.
The figure is a cross-sectional view taken along line IX-M in figure WJ7. 1... Vehicle body opening (rear opening of IIL body), 2...
・Opening/closing body (back door), 3... Freedom of opening/closing body @ (lower end of bank door), 5... Vehicle body opening edge, 11...
- Bumper rubber, 12, 17... Bumper rubber body, 13... Elastic body (coil sprink). 2 people Figure 1 Figure 2 Figure 3 Figure 4 Figure 6 Figure 5

Claims (1)

[Claims] (1) A bumper rubber that is attached to the free end of an opening/closing body that is attached to the opening/closing body of the vehicle and comes into elastic contact with the edge of the opening/closing body when the opening/closing body is closed. and an elastic body having a spring constant smaller than that of the bumper rubber body, which is attached to the bumper rubber body and is compressed between the opening/closing body and the edge of the opening of the vehicle body when the opening/closing body is closed. Bumper rubber for vehicle opening and closing bodies featuring: