JPH0715781Y2 - Door weather strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a door weather strip interposed between a door of a vehicle or the like and a body.

(Prior Art) Conventionally, this type of vehicle is installed between a door and a body to prevent entry of wind, rain, noise, dust, etc., and also to mitigate shocks when opening and closing the door and prevent vibration of the door during traveling. Various types of cross-sectional shapes have been developed as door weather strips for carrying out the above, and, for example, as a simple cross-sectional shape to be inserted in the gap T between the back door 2 and the body 3 of the vehicle 1 shown in FIG. Door weather strip 4 having a substantially tongue-shaped cross section shown in the figure
In addition, a door having a substantially elliptical cross section having a hollow portion 7 as shown in FIG. 8 has a cross-sectional shape that makes a simple and smooth contact with the sealing surface 5 formed on the four sides of the door opening W. There is a weather strip 6.

(Problem to be solved) However, in the case of the door weather strips 4 and 6 having the conventional cross-sectional shape, if the cross-sectional shape closes the door opening from a natural state where the door opening does not close (shown by a solid line). , Door weather strip in contact with sealing surface 5
Since the tips 4 and 6 are elastically deformed and the dimension h is lowered from the natural state, the width H of the sealing surface 5 must be set large. If the width H of the sealing surface 5 is small, the door weather strip 4 And 6 contact the R surface 8 above the seal surface 5 or contact the step 5a below the seal surface 5 to deviate from the predetermined seal surface 5 and cannot fully perform the sealing function. On the other hand, when the sealing surface 5 has to be formed large within a limited size range, the radius of the R surface 8 has to be reduced, so that the body forming the sealing surface 5 is required. When the side is a press-formed product such as a steel plate, there is a problem that press-forming becomes difficult.

The present invention has been made to solve the above-mentioned conventional problems. When the door is closed and the door weather strip is elastically deformed, the amount of lowering can be reduced, and a sufficient sealing function can be achieved. The purpose of the present invention is to provide a door weather strip that can be used.

(Means for Solving the Problems) In order to solve the above technical problems, the present invention is a door weatherstrip interposed between a door and a body, and the door weatherstrip is a mounting base attached to the door. At one end, an inner piece extending toward the body seal surface, and at the other end, an outer piece having a bent portion in the shape of a dogleg to the inner side consisting of a support piece and an operating piece. A seal piece is provided between the tips of the outer pieces to form a closed cross section having a hollow portion, and a bridge piece is provided between the bent portion of the outer piece and the inner piece, so that the support piece and the operating piece when the door is closed. Also, the door weather strip is configured to give the sealing piece a sealing ability to the sealing surface in cooperation with the bridge piece.

(Operation) When the door is closed, the tip of the outer piece of the door weather strip comes into contact with the sealing surface of the body, and this reaction force acts on the bent portion of the outer piece, so that the outer piece moves from the bent portion. The bridge piece is pushed and moved by being bent and directed toward the inner side. Due to the pushing force to the bridge piece and the reaction force of the outer piece, the seal piece between both pieces is in close contact with the sealing surface and the R surface to seal them.

(First Embodiment) Next, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. In FIG. 1, reference numeral 10 indicates, for example, a back door 2 of a vehicle 1 and a sealing surface 5 side of a body 3. A door weather strip interposed in the gap portion T, which is made of, for example, EPDM (ethylene propylene diene rubber) or the like, and has a cross-sectional shape of the mounting base 11 and the mounting base 11 that are mounted on the mounting surface 2a of the back door 2. At the inner end (the side communicating with the passenger compartment of the clearance T) of the body 3, an inner piece 12 of a predetermined length extending toward the seal surface 5 side of the body 3 and an outer end portion of the mounting base 11 have the same seal surface. The outer piece 13 extending to the 5 side and the seal piece 18 connecting the tip sides of the both pieces 12, 13 are formed into a substantially deformed quadrilateral shape having a hollow portion 19, and the outer piece 13 is the inner piece 12. It is formed longer and has a notch at a predetermined position near the mounting base 11. A bent portion 14 having a recess 14a is provided,
The outer piece 13 is a support piece having a predetermined length ratio with the bent portion 14 as a boundary.
15 and the actuating piece 16 are divided and formed, and both pieces 15 and 16 are bent in a natural state at a predetermined angle θ (angle smaller than 180 degrees) around the bent portion 14, and the outer piece 13 is an inner side. Piece 12
It is provided so that it can be bent and directed to the side. In addition, the base portion of the support piece 15, that is, the corner portion D with the mounting base portion 11, has a cutout portion 17
Are formed. A seal piece 18 is integrally connected obliquely between the ends of the inner piece 12 and the outer piece 13 provided in this way, and is formed in a substantially deformed quadrilateral shape having a hollow portion 19 integrally. Also, the connection point A between the inner piece 12 and the sealing surface 18
The bridge piece 20 is integrally connected between the and the bent portion 14,
The seal piece 18, the operating piece 16 and the bridge piece 20 are connected and formed in a substantially triangular shape.

When the door opening is closed by the back door 2 in which the door weather strip 10 thus formed is attached to the four circumferences, first, the outer piece serving as the tip of the door weather strip 10 is closed.
The connection point B between the seal piece 13 and the seal piece 18 is brought into contact with the seal surface 5,
This reaction force F is cut through the actuating piece 16 of the outer piece 13 and is cut into a recess.
Acting on 14, the operating piece 16 and the supporting piece 15 are bent in a substantially V-shape toward the inner piece 12 side through the cut recess 14a of the bent portion 14 and the cut portion 17 to push and move the bridge piece 20 inward. To do. When the door opening is closed, the pushing force G to the bridge piece 20 and the reaction force F of the operating piece 16 cause both pieces 16, 2
The sealing piece 18 between 0 is closely contacted with the sealing surface 5 and the R surface 8 to seal them. In this state, the bridge piece 20 and the support piece 15
And the support piece 15 is a bridge piece.
It supports 20 by pushing. When the back door 2 is opened, the restoring force of each piece 12, 13, 18 restores the original shape of the natural state.

Therefore, according to the door weather strip 10 of the present embodiment, when the door 2 is closed, the outer piece 13 starts to bend when the connecting point B at the tip comes into contact with the sealing surface 5, and therefore the amount of fall of the tip is decreased. h1 is much smaller than both h of the conventional door weather strips 4 and 6, and can be pressed against the R surface 8 above the seal surface 5 with a surface pressure sufficient to seal the seal piece 18. Therefore, even if the width H of the sealing surface 5 cannot be formed large, it is possible to effectively seal, and this makes it possible to form the R surface 8 large, so that the sealing surface 5 is formed. It is possible to easily press the press-formed product on the body side.

(Second Embodiment) Next, FIGS. 3 and 4 show a second embodiment of the present invention. This weather strip 21 has a gentle curve between the inner piece 12 and the seal piece 18 in the first embodiment. It is formed on the inner piece 12 'and the seal piece 18', which are continuous in a similar manner. Therefore, also in the second embodiment, the same operational effect as that of the first embodiment is obtained.

In the above-mentioned first and second embodiments, the bent recess 14 and the corner D are provided with the cut recess 14a and the cut recess 17, respectively. However, the present invention is not limited to this. For example, the weather shown in FIG. The outer piece 13 may be configured only by the bent portion 14 such that the outer piece 13 can be bent and directed inward like the strip 22, and the door weather strips 10, 21, and 22 are attached to the back door 2 in the above-described embodiment. The present invention is not limited to this, but can be applied to front doors and rear doors, and can also be applied as a door mounting type.

(Effects of the Invention) The present invention is a door weather strip interposed between a door and a body, the door weather strip extending toward the body seal surface at one end of a mounting base mounted on the door. On the inner side piece and the other side, the outer side piece, which is composed of a support piece and an actuating piece, has a bent portion in the shape of a dogleg to the side of the inner side piece. The sealing piece is formed in a closed cross section having a hollow portion, a bridge piece is provided between the bent portion of the outer piece and the inner piece, and the support piece and the operating piece and the bridge piece cooperate with each other when the door is closed. By providing the sealing ability to the sealing surface, when the door is closed, the tip of the door weather strip comes into contact with the sealing surface and the bending of the outer piece is started at the same time. The amount of fall is significantly reduced In addition, since it is possible to press-bond the seal piece to the R surface above the seal surface with a surface pressure sufficient to seal the seal piece, it is possible to effectively seal even if the width of the seal surface cannot be increased. Yes, and this is R
Since it is possible to form a large surface, it is possible to easily press-form the press-formed product on the body side that forms the sealing surface.

[Brief description of drawings]

1 and 2 show a first embodiment of the present invention.
FIG. 1 is a sectional view showing the relationship of a door weatherstrip with respect to a sealing surface of a door and a body, FIG. 2 is an operation explanatory view of the door weatherstrip, and FIGS. 3 and 4 are a second embodiment of the present invention. FIG. 3 is a sectional view showing the relationship of the door weather strip with respect to the sealing surface of the door and the body, FIG. 4 is an explanatory view of the action of the door weather strip, and FIG. 5 is a sectional view showing another aspect of the door weather strip. The figures are perspective views of the rear part of the vehicle body, and FIGS. 7 and 8 are conventional examples. 2 ... Back door, 3 ... Body 5 ... Seal surface 10,21,22 ... Weather strip 11 ... Mounting base, 12,12 '... Inner piece 13 ... Outer piece, 15 ... Bend 18,18' ... Seal piece, 19 … Hollow part 20… Bridge piece

Claims (1)

[Scope of utility model registration request] 1. A door weatherstrip interposed between a door and a body, the door weatherstrip having an inner piece extending toward a body seal surface at one end of a mounting base attached to the door. At the other end, an outer piece having a bent portion in a substantially V shape to the inner side consisting of a support piece and an operating piece,
Further, a seal piece is provided between the tips of the inner and outer pieces to form a closed cross section having a hollow portion, and a bridge piece is provided between the bent portion of the outer piece and the inner piece, so that the door is closed when the door is closed. A door weather strip configured to give a sealing ability to a sealing surface of the sealing piece by cooperation of a supporting piece, an operating piece and a bridge piece.