JP2009263896A - Support mechanism of opening/closing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a support mechanism of an opening/closing body usable for even a large and heavy opening/closing body such as the tail gate of a vehicle and the trunk lid of a vehicle for adding a proper damping action. <P>SOLUTION: This support mechanism of an opening/closing body for rotatably supporting the opening/closing body 12 on a support part 11 comprises a support part side member 21 attached to the support part 11, an opening/closing body side member 22 attached to the opening/closing body 12, and a shaft member 23 rotatably connecting the support part side member 21 and the opening/closing body side member 22 to each other. A dilatant damping material 24 hardened according to the deformation rate is installed around the a shaft member 23. An insertion member (dilatant member) 48 is affixed to the support part side member 21 and the opening/closing body side member 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a support mechanism for an opening / closing body that can add a damper function to the opening / closing body.

As a support mechanism for an open / close body, an open / close body support mechanism such as a vehicle tailgate or a vehicle trunk lid is known.
This type of opening / closing body support mechanism can be opened and closed with a damper or an open stay interposed between the vehicle body and the opening / closing body to slow down the opening / closing body or with the opening / closing body open. It was intended to hold the body.

As a support mechanism for such an opening / closing body, one using a dilatant body as a damper member is known (for example, see Patent Document 1).
JP-A-9-206244

Here, the dilatant is a kind of physics motion, and is a phenomenon in which shear stress (force applied to an object) is generated in an object and the state changes from a soft state to a hard state. An object in which this phenomenon occurs is called a dilatant body.
Since the dilatant body has small particles, when a force is applied to bring the particles into close contact with each other, the gap between the particles is reduced, the strength is increased, and the dilatant body is hardened. However, when the application of the force is stopped, the gap between the particles is widened again, and the original softness is restored.

  The opening / closing body support mechanism of Patent Document 1 is a support mechanism for an opening / closing body that rotatably supports a toilet lid that is an opening / closing body side member on a toilet seat that is a support portion side member, and that opens and closes the toilet lid on the toilet seat. A damper member that moderates the rotational speed of the toilet lid is interposed around an axis that rotatably supports the toilet lid. The damper member includes a cylindrical housing provided on the toilet lid side, and the cylinder. A rotating shaft that is penetrated in the longitudinal direction and the center of the housing and is attached to the toilet lid side, a blade member that is provided on the rotating shaft and in the housing, and a dilatant body that is enclosed in the housing.

  Therefore, when the rotational speed of the toilet lid is high, the damper member has a high shear rate of the dilatant body by the blade member, so that the viscosity of the dilatant body increases and the force for dumping the toilet lid increases. When the rotation speed of the toilet lid is slow, the shear rate of the dilatant body by the blade member is slow, so the viscosity of the dilatant body decreases and the force for dumping the toilet lid decreases. Thereby, the support mechanism of the opening / closing body of Patent Document 1 is intended to improve the feeling of opening / closing the toilet lid.

  However, in the opening / closing body support mechanism, for example, a large and heavy opening / closing body such as a vehicle tailgate or a vehicle trunk lid has a large moment of inertia, so that it has been difficult to obtain a sufficient damping effect.

  It is an object of the present invention to provide a support mechanism for an opening / closing body that can be used for a large and heavy opening / closing body such as a tailgate of a vehicle or a trunk lid of a vehicle and can add an appropriate damper action.

According to a first aspect of the present invention, there is provided a support mechanism for an opening / closing body that rotatably supports the opening / closing body on the support portion, a support portion side member attached to the support portion, an opening / closing body side member attached to the opening / closing body, and A dilatant cushioning material is provided around the shaft member, and the dilatant cushioning material is provided around the shaft member. The dilatant cushioning material is provided around the shaft member. It is fixed to the body side member.
Here, the dilatant cushioning material is a cushioning material using a dilatant phenomenon.

  The invention according to claim 2 is characterized in that a torsion spring is provided around the dilatant cushioning material, and one end is fixed to the support portion side member and the other end is fixed to the opening / closing body side member.

  The invention according to claim 3 is characterized in that the dilatant cushioning material includes an elastic member and a dilatant member formed on a part of the elastic member.

  The invention according to claim 4 is characterized in that the dilatant member is formed to extend in the axial direction of the rotating shaft.

  The invention according to claim 5 is characterized in that the dilatant member is formed on the outer peripheral portion.

  The invention according to claim 1 includes a support part side member attached to the support part, an opening / closing body side member attached to the opening / closing body, and a shaft member that rotatably connects the support part side member and the opening / closing body side member. In addition, since the dilatant cushioning material that cures according to the deformation speed is provided around the shaft member, and the dilatant cushioning material is fixed to the support portion side member and the opening / closing body side member, it is large due to torsional deformation at the outer peripheral portion of the dilatant cushioning material. Deformation speed can be obtained. Thereby, even if it is an opening-closing body which generate | occur | produces a big moment of inertia, such as a vehicle door, the sufficient impact absorption effect by a dilatant cushioning material can be acquired.

  In the invention according to claim 2, since the torsion spring is provided around the dilatant cushioning material, and one end is fixed to the support part side member and the other end is fixed to the opening / closing body side member, the dilatant cushioning material and the torsion spring, for example, Functions equivalent to existing push rods can be achieved in a small space. Thereby, it can use suitably for the tailgate of a vehicle, a trunk, etc.

  In the invention according to claim 3, since the dilatant cushioning material includes the elastic member and the dilatant member formed on a part of the elastic member, the material cost of the dilatant cushioning material can be reduced.

  In the invention which concerns on Claim 4, since the dilatant member was extended and formed in the axial direction of a rotating shaft, many deformation | transformation amounts of a dilatant cushioning material can be ensured. As a result, the hardening effect by deformation can be enhanced as much as possible.

  In the invention which concerns on Claim 5, since the dilatant member was formed in the outer peripheral part, many deformation | transformation amount can be ensured by the torsional deformation of the outer peripheral part of a dilatant cushioning material. As a result, the hardening effect by deformation can be enhanced as much as possible.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
1 is a perspective view of a support mechanism for an opening / closing body according to the present invention, FIG. 2 is an exploded perspective view of the support mechanism for the opening / closing body according to the present invention, and FIG. 3 is a sectional view taken along line 3-3 of FIG. is there.

  An opening / closing body support mechanism (opening / closing body opening / closing mechanism) 20 is a mechanism interposed between a support portion (frame body) 11 and an opening / closing body 12 attached to the support portion 11 so as to be openable and closable (rotatable). A support part side member 21 attached to the support part 11; an opening / closing body side member 22 attached to the opening / closing body 12; a shaft member 23 rotatably connecting the support part side member 21 and the opening / closing body side member 22; The support part side member 21 is provided between the support part side member 21 and the opening / closing body side member 22 and is fixed to the support part side member 21 and the opening / closing body side member 22 and the shaft member 23. A retaining ring 25 that is pivotally secured to the shaft member 23 and a retaining ring 26 that is engaged with the shaft member 23 and that pivots the opening / closing body side member 22 to the shaft member 23.

  The support portion side member 21 includes a plate-shaped bracket 31 and a collar member 32 welded to the bracket 31. The bracket 31 includes attachment holes 33 and 33 that are attached to the support portion 11.

  The opening / closing body side member 22 has the same shape as the support portion side member 21, and includes a plate-like bracket 34 and a collar member 35 welded to the bracket 34. The bracket 34 includes mounting holes 36 and 36 for attaching the opening / closing body 12.

  The shaft member 23 includes a first shaft portion 41 that rotatably supports the support portion side member 21, a groove 43 that is provided on the first shaft portion 41 and holds the retaining ring 25, and the opening / closing body side member 22. The second shaft portion 42 that rotatably supports the second shaft portion 42, the groove 44 that is provided on the second shaft portion 42 and holds the retaining ring 26, and the first and second shaft portions 41, 42 are connected. The intermediate shaft portion 45 is formed to have a diameter larger than the diameter of the first and second shaft portions 41 and 42.

  The dilatant cushioning material 24 includes a cylindrical elastic member 47 formed of an elastic body, and a plurality of cylindrical insertion members (dilatant members) embedded in the outer periphery of the elastic member 47 and formed of the dilatant member. 48). The dilatant member is a member that utilizes the dilatant phenomenon, and has a property of being cured when the deformation speed increases.

Here, the dilatant is a kind of physics motion, and is a phenomenon in which shear stress (force applied to an object) is generated in an object and the state changes from a soft state to a hard state. An object in which this phenomenon occurs is called a dilatant body.
Since the dilatant body has small particles, when a force is applied to bring the particles into close contact with each other, the gap between the particles is reduced, the strength is increased, and the dilatant body is hardened. However, when the application of the force is stopped, the gap between the particles is widened again, and the original softness is restored.

As a typical example, when a sandy beach is stepped on or pressed down, the sand becomes hard, and when it contains seawater, it becomes harder. On ordinary dry sandy beaches, car tires slip and the steering wheel cannot be operated, but where this phenomenon occurs, the sand is hard, so you can drive by car or park on the sandy beach.
That is, the dilatant member is a material that has the property of curing according to the deformation speed using the above phenomenon.

4 (a) to 4 (d) are explanatory views of the operation of the opening / closing body support mechanism shown in FIG.
In (a), the support mechanism 20 of the stationary open / close body is shown, and in (b), the dilatant cushioning material 24 of the support mechanism 20 of the stationary open / close body is shown. The dilatant cushioning material 24 is not deformed, and there is no change in the hardness of the cylindrical insertion member 48 formed of the dilatant member.

  In (c), when the opening / closing body side member 22 of the opening / closing body support mechanism 20 is rotated as indicated by the arrow a1, the dilatant cushioning material 24 shown in (d) is also twisted as indicated by the arrow a2, and formed by the dilatant member. The cylindrical insertion member 48 is also twisted as shown by the arrow a2. At this time, since the dilatant member (insertion member) 48 has a property of hardening when the deformation speed increases, the faster the opening / closing body side member 22 shown in (c), the more the cylindrical shape formed by the dilatant member. The insertion member 48 changes hard and generates a force for suppressing the rotation of the opening / closing body side member 22. Further, if the opening / closing body side member 22 rotates slowly, the force that suppresses the rotation of the opening / closing body side member 22 is small, and the opening / closing body side member 22 can be rotated lightly.

  In the opening / closing body support mechanism 20, a support part side member 21 attached to the support part 11, an opening / closing body side member 22 attached to the opening / closing body 12, and the support part side member 21 and the opening / closing body side member 22 are rotatably connected. The dilatant cushioning material 24 having a shaft member 23 that cures according to the deformation speed is provided around the shaft member 23, and the dilatant cushioning material 24 is fixed to the support portion side member 21 and the opening / closing body side member 22. A large deformation speed can be obtained by torsional deformation at the outer periphery of the dilatant cushioning material 24. Thereby, even if it is the opening-and-closing body 12 which a big inertia moment generate | occur | produces, such as a vehicle door, the sufficient impact absorption effect by the dilatant cushioning material 24 can be acquired.

  In the opening / closing body support mechanism 20, the dilatant cushioning material 24 includes an elastic member 47 and a dilatant member (insertion member) 48 formed on a part of the elastic member 47. Cost can be reduced.

  In the opening / closing body support mechanism 20, the dilatant member (insertion member) 48 is formed to extend in the axial direction of the rotation shaft, so that a large amount of deformation of the dilatant cushioning material 24 can be secured. As a result, the hardening effect by deformation can be enhanced as much as possible.

FIG. 5 is a perspective view of a support mechanism for an opening / closing body according to another embodiment of the present invention.
The opening / closing body support mechanism (opening / closing body opening / closing mechanism) 70 is obtained by attaching a torsion spring 78 to the opening / closing body support mechanism 20 (see FIG. 3), and includes a support portion side member 71, an opening / closing body side member 72, The shaft member 73, the dilatant cushioning material 74, the retaining ring 75, the retaining ring 76, one end is fixed to the support part side member 71, and the other end is fixed to the opening / closing body side member 72. It consists of a torsion spring 78 arranged around.

  The support part side member 71 includes a bracket 81 and a collar member 82. The bracket 81 includes attachment holes 83 and 83 that are attached to the support portion 11 (see FIG. 1). The opening / closing body side member 72 has the same shape as the support portion side member 71 and includes a bracket 84 and a collar member 85. The bracket 84 includes mounting holes 86 and 86 for attaching the opening / closing body 12.

The shaft member 73 includes a first shaft portion 91, a groove 93, a second shaft portion 92, a groove 94, and an intermediate shaft portion 95.
The dilatant cushioning material 74 includes an elastic member 97 and a plurality of cylindrical insertion members 98 formed of a dilatant member.

  In the opening / closing body support mechanism 70, a torsion spring 78 is provided around the dilatant cushioning material 74, and one end is fixed to the support portion side member 71 and the other end is fixed to the opening / closing body side member 72. For example, the spring 78 can achieve a function equivalent to that of an existing push rod in a space-saving manner. Thereby, it can use suitably for the tailgate of a vehicle, a trunk, etc.

6A and 6B are perspective views of a dilatant cushioning material of another embodiment of the support mechanism for the opening and closing body shown in FIG.
As shown in FIG. 6A, the dilatant cushioning material 51 includes a cylindrical elastic member 53, and a cylindrical outer member 54 provided on the outer periphery of the elastic member 53 and formed by the dilatant member. Consists of. By disposing the dilatant member (outer member) 54 on the outer shell, it is possible to secure the largest amount of deformation of the dilatant cushioning material and to greatly increase the deformation speed.

  That is, in the dilatant cushioning material 51, since the dilatant member 54 is formed on the outer peripheral portion, a large amount of deformation can be secured by the torsional deformation of the outer peripheral portion of the dilatant member 54. As a result, the hardening effect by deformation can be enhanced as much as possible.

  As shown in FIG. 6B, the dilatant cushioning material 52 includes a washer-like upper end portion 56 formed of an elastic body, a washer-like lower end portion 57 formed of an elastic body, and upper end portions thereof. 56 and a lower end portion 57, and a cylindrical intermediate portion 58 formed of a dilatant member is bonded together.

  As shown in FIG. 2, the support mechanism for the opening / closing body according to the present invention is configured such that the support portion side member 21 and the opening / closing body side member 22 are constituted by brackets 31, 34 and collar members 32, 35. It is not limited, and it may be configured only with brackets.

  The opening / closing body support mechanism according to the present invention is suitable for use in passenger cars such as sedans and wagons.

It is a perspective view of the support mechanism of the opening-closing body which concerns on this invention. It is a disassembled perspective view of the support mechanism of the opening-closing body which concerns on this invention. FIG. 3 is a sectional view taken along line 3-3 in FIG. 1. It is action | operation explanatory drawing of the support mechanism of the opening-closing body shown by FIG. It is a perspective view of the support mechanism of the opening-closing body of another Example which concerns on this invention. It is a perspective view of the dilatant cushioning material of another Example of the support mechanism of the opening-closing body shown by FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Support part, 12 ... Opening and closing body, 20, 70 ... Opening / closing body support mechanism, 21, 71 ... Supporting part side member, 22, 72 ... Opening / closing body side member, 23, 73 ... Shaft member, 24, 74 ... Dilatant buffer Material, 47, 97 ... elastic member, 48, 98 ... insertion member (dilatant member).

Claims (5)

In the opening / closing mechanism of the opening / closing body that rotatably supports the opening / closing body on the support portion,
A support part side member attached to the support part, an opening / closing body side member attached to the opening / closing body, and a shaft member that rotatably connects the support part side member and the opening / closing body side member,
An opening / closing mechanism for an opening / closing body, wherein a dilatant cushioning material that cures according to a deformation speed is provided around the shaft member, and the dilatant cushioning material is fixed to the support part side member and the opening / closing body side member.   The opening / closing mechanism of the opening / closing body according to claim 1, wherein a torsion spring is provided around the dilatant cushioning material, and one end is fixed to the support portion side member and the other end is fixed to the opening / closing body side member.   The opening / closing mechanism of the opening / closing body according to claim 1 or 2, wherein the dilatant cushioning material includes an elastic member and a dilatant member formed on a part of the elastic member.   The opening / closing mechanism of the opening / closing body according to claim 3, wherein the dilatant member is formed to extend in an axial direction of the rotating shaft.   The opening / closing mechanism of the opening / closing body according to claim 3 or 4, wherein the dilatant member is formed on an outer peripheral portion.

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