JP5095450B2 - Cushion clip - Google Patents

Description

  The present invention relates to a cushion clip that is used by being attached to either a body or a door of a vehicle, for example, in order to cushion an impact due to an overstroke when a sliding door of an automobile is closed.

This type of cushion clip, as disclosed in Patent Document 1, is made of an elastomer or rubber cushion that cushions an impact, and is made of a resin that is inserted into a mounting hole opened in a panel member of either the body or the door. And a locking leg. When this locking leg is inserted into the mounting hole from the front side of the panel member, the locking claw provided on the locking leg locks to the inner periphery of the mounting hole on the back side of the panel member, and the panel member A locking leg is coupled to the.
In addition, in the general cushion clip, there is a type in which the cushion and the panel member in a state where the locking leg is coupled to the panel member are always set to interfere with each other. Then, the bottom surface of the cushion or a seal lip provided on the bottom surface is applied to the surface of the panel member to be deformed, and the locking force of the locking leg is pressed against the back surface of the panel member by the reaction force accompanying the deformation, The backlash of the cushion clip is suppressed.
JP 2003-307244 A

However, in the type in which the cushion and the panel member always interfere with each other, when the cushion or the seal lip is plastically deformed, a gap is generated between the locking claw of the locking leg and the back surface of the panel member. Raises and causes abnormal noise.
The present invention is intended to solve such a problem, and even if the cushion clip is set so that the cushion and the panel member always interfere with each other, the backlash of the cushion clip accompanying plastic deformation of the cushion is eliminated.

The present invention is for achieving the above object, and is configured as follows.
A cushion to buffer the impact when closing the openable and closable mounted door Bo Day, cushions and integrally protrudes from the bottom, mounting hole bored in the one of the panel members of the body and door And a locking clip that is coupled to the panel member, the locking leg having a locking claw, and the locking claw includes a locking leg. By being inserted into the mounting hole from the front surface side, it is configured to pass through the mounting hole while being bent inward by elasticity and to be positioned on the back surface side of the panel member. The locking claw is provided with a slope for locking to the inner peripheral edge of the mounting hole on the back surface side of the panel member, thereby holding the locking leg in a coupled state to the panel member. This slope is set to an inclination that generates a component force in a direction of pulling the panel member toward the bottom surface of the cushion based on the elastic force of the locking claw. In the state where the locking leg is coupled to the panel member, the bottom surface of the cushion is always kept in contact with the panel member.
An annular seal lip is integrally provided on the outer periphery of the bottom surface of the cushion. The seal lip is continuous with the outer peripheral surface of the cushion, is partitioned by an annular groove with respect to the bottom surface of the cushion, and comes into contact with the surface of the panel member when the locking leg is coupled to the panel member. Thus, it is configured to be elastically deformed so as to spread outward and to be in close contact with the surface of the panel member. The fulcrum when the seal lip is elastically deformed is set above the bottom surface of the cushion.

  In this way, the surface of the panel member and the bottom surface of the cushion are always in light contact with zero clearance by generating a force in the direction of pulling the panel member toward the bottom surface side of the cushion by the slope of the locking claw in the locking leg. Can be kept in. Further, for the same reason, there is no gap between the back surface of the panel member and the locking claw of the locking leg. Therefore, even if the cushion clip is set to always interfere with the bottom surface of the cushion and the surface of the panel member, the backlash of the cushion clip due to plastic deformation of the cushion is eliminated.

In addition , the sealing lip is brought into close contact with the surface of the panel member, so that the mounting hole is sealed, and the cushion is provided with a sealing function in addition to the shock buffering function, thereby widening the use range of the cushion clip.

Moreover, the sealing lip is divided by an annular groove with respect to the bottom surface of the cushion by the supporting point is set above the bottom of the cushion when the seal lip is resiliently deformed, with a small force the seal lip It becomes possible to elastically deform, and the insertion load of the locking leg to the mounting hole of the panel member can be reduced.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
The cushion clip shown in FIG. 1 to FIG. 3 protrudes downward in the drawing from the bottom surface 12b of the cushion 10 that cushions an impact caused by an overstroke when a sliding door or the like of an automobile is closed. The locking leg 30 is made up of. The cushion 10 and the locking leg 30 are integrated with each other by two-color molding using individual materials required for each. The cushion 10 is made of a relatively soft elastic material such as elastomer or rubber, and the locking leg 30 is made of a relatively hard resin material such as polypropylene.

  The cushion 10 is constituted by a main body portion 12 having a cylindrical shape as a whole and a protruding portion 14 located at a tip axial center portion thereof. The protruding portion 14 protrudes from the distal end surface 12 a of the main body portion 12. Further, the protruding portion 14 has a small volume as compared with the main body portion 12 and has a shape that is easily bent due to the concave portion 16 formed on the outer periphery and the hole 18 formed on the shaft center portion. Therefore, when the cushion 10 receives an impact, the protruding portion 14 is elastically deformed before the main body portion 12.

An annular continuous seal lip 20 is provided on the outer periphery of the bottom surface 12 b in the main body portion 12. The seal lip 20 has a shape that continuously spreads outward from the outer peripheral surface of the main body portion 12 as is clear from FIG. 4 which is an enlarged view of a part of FIG. Thereby, the front-end | tip part 20a of the seal lip 20 is located outside the outer peripheral surface of the main-body part 12, and is located below the bottom face 12b of the main-body part 12 by drawing.
The seal lip 20 is partitioned by an annular groove 22 with respect to the bottom surface 12 b of the main body portion 12. As a result, the fulcrum 20b (FIG. 4) when the seal lip 20 is deformed so as to contact the surface 40a of the body 40 and bend outward as described later is above the bottom surface 12b of the main body portion 12. .

The locking leg 30 has a cylindrical base portion 32 that occupies almost half of the entire length thereof and is located inside the cushion 10 (main body portion 12) (FIG. 3), and the base portion 32 is integrated with the cushion 10 as described above. ing. In the locking leg 30, a pair of left and right locking claws 34 are provided in a hollow portion 33 protruding from the bottom surface 12 b of the main body portion 12. Both locking claws 34 are separated from the hollow portion 33 by a slit 36 of the hollow portion 33, and can be bent elastically in the axial direction (inward) of the locking leg 30.
Both the locking claws 34 have guide slopes 34a for guiding the insertion of the locking legs 30 into the mounting holes 42 of the body 40, which will be described below, and an overhanging portion 34b that protrudes outward. Moreover, both the latching claws 34 have slopes 34c that are inclined opposite to the guide slopes 34a with the individual overhang portions 34b as boundaries.

In FIG. 5 showing the use state of the cushion clip, the locking leg 30 is inserted into a mounting hole 42 formed in the body 40 of the automobile and coupled to the body 40. Therefore, in this embodiment, the body 40 corresponds to the “panel member” of the present invention. However, the component plate of the door 50 that is opened and closed with respect to the body 40 is a “panel member”, and a mounting hole is formed in the plate. It is also possible to couple the locking leg 30.
When the locking leg 30 is inserted into the mounting hole 42 from the surface 40 a side of the body 40, the both locking claws 34 advance while the individual guide slopes 34 a are in contact with the inner periphery of the mounting hole 42. Thereby, both the locking claws 34 pass through the attachment hole 42 and are positioned on the back surface 40b side of the body 40 while being bent inward. In this state, both the locking claws 34 return to the outside due to elasticity, and the individual inclined surfaces 34 c are locked to the inner peripheral edge of the mounting hole 42. As a result, the locking leg 30 is held in a state of being coupled to the body 40, and as a result, the cushion clip is attached to the body 40.

  In the state where the locking leg 30 is coupled to the body 40, the bottom surface 12b of the cushion 10 (main body portion 12) is the surface 40a of the body 40, as is apparent from FIG. Touching. Further, the seal lip 20 is also deformed to be bent outward and is in close contact with the surface 40 a of the body 40. Thereby, the circumference | surroundings of the attachment hole 42 in the surface 40a side of the body 40 are sealed, and it is prevented that water penetrate | invades into the attachment hole 42 from this surface 40a side. Since the fulcrum 20b when the seal lip 20 bends is above the bottom surface 12b of the main body portion 12 as described above, the seal lip 20 is deformed with a small force, and the locking leg 30 Is inserted into the mounting hole 42 of the body 40.

  The inclined surfaces 34c of the both locking claws 34 in the locking leg 30 generate a component force in a direction that draws the body 40 toward the bottom surface 12b of the cushion 10 (main body portion 12) based on the elastic force of each locking claw 34. . As a result, the front surface 40a of the body 40 and the bottom surface 12b of the main body portion 12 can be kept lightly in contact with each other with zero clearance, and at the same time, a clearance is formed between the back surface 40b of the body 40 and the locking claws 34. Also avoid that. For this reason, even if the main body portion 12 is plastically deformed with a cushion clip set so that the front surface 40a of the body 40 and the bottom surface 12b of the main body portion 12 always interfere with each other, even if the main body portion 12 undergoes plastic deformation, the accompanying back surface 40b The gap between is always absorbed. Therefore, the backlash of the cushion clip with respect to the body 40 is eliminated.

  The impact when the door 50 shown in FIG. 5 is closed is received by the cushion 10. Due to this impact, the protruding portion 14 of the cushion 10 is first deformed, and then the main body portion 12 is deformed. At this time, the characteristic of the load (reaction force) that changes according to the amount of deformation of the cushion 10 mainly due to the difference in hardness between the main body portion 12 and the protruding portion 14 becomes two stages. That is, the initial load based on the deformation of the protruding portion 14 is small, and thereafter, the load increases rapidly due to the deformation of the main body portion 12. In this way, by reducing the initial load of the cushion clip, the impact when the door 50 is closed vigorously is softly received, its rebound is prevented, and thereafter a large impact force from the door 50 is buffered.

The front view showing the appearance of a cushion clip. The side view showing the appearance of a cushion clip. The longitudinal cross-sectional view showing the cushion clip. Sectional drawing which expanded and represented a part of FIG. The longitudinal cross-sectional view showing the use condition of the cushion clip. Sectional drawing which expanded and represented a part of FIG.

Explanation of symbols

10 Cushion 12b Bottom 20 Seal Lip 30 Locking Leg 34 Locking Claw 34c Slope 40 Body (Panel Member)
40a front surface 40b back surface 42 mounting hole 50 door

Claims (1)

A cushion that cushions the shock when the door attached to the body is opened and closed, and a cushion that protrudes from the bottom of the cushion and is attached to the mounting hole opened in either the body or the door panel A cushion clip having a locking leg coupled to the panel member by insertion,
The locking leg has a locking claw, and this locking claw is inserted into the mounting hole from the surface side of the panel member, and passes through the mounting hole while being bent inward by elasticity. And the locking claw is locked to the inner peripheral edge of the mounting hole on the back side of the panel member, thereby holding the locking leg in a coupled state to the panel member. The slope is set to an inclination that generates a component force in the direction of pulling the panel member toward the bottom surface of the cushion based on the elastic force of the locking claw, and the locking leg is coupled to the panel member. The bottom surface of the cushion is always kept in contact with the panel member, and an annular seal lip is integrally provided on the outer periphery of the bottom surface of the cushion, the seal lip is continuous with the outer peripheral surface of the cushion, and Cushi The panel member is partitioned by an annular groove with respect to the bottom surface of the panel and elastically deforms so as to spread outward by contacting the surface of the panel member when the locking leg is coupled to the panel member. A cushion clip that is configured to be in close contact with the surface of the lip, and whose fulcrum when the seal lip is elastically deformed is set above the bottom surface of the cushion.

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