JP2008223247A - Door hinge - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door hinge for automobiles capable of holding a door at any position in a semi-opened state. <P>SOLUTION: This door hinge 1 having a male part 2 and a female part 3 as first and second piece members rotatable relative to each other comprises a rotation control member 4 and an elastic member 5 pressing the rotation control member 4 against the male part 2 and the female part 3. The female part 3 and the rotation control member 4 have surface gear-like first and second meshing parts 34, 43 on their mutual contact surfaces, respectively. A friction material may be installed between the male part 2 and the rotation control member 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a door hinge, and more particularly to a door hinge capable of holding a door at all opening angles.

2. Description of the Related Art Conventionally, an automobile door is rotatably attached to a vehicle body via a door hinge and a door check.
FIG. 4 shows a conventional door hinge 101. In the door hinge 101, a door side member 112 attached to the door side is rotatably connected to a vehicle body side member 111 attached to the vehicle body side via a hinge pin 113 which is a rotation shaft. The vehicle body side member 111 and the door side member 112 are provided with attachment holes 111a and 112a, respectively, and bolts (not shown) are inserted through these to be screwed to the door pillar P and the door panel D, respectively. When the door is opened and closed, the door side member 112 rotates with respect to the vehicle body side member 111.

  5A and 5B show a conventional door check 102. FIG. The door check 102 is a member that limits the rotation angle of the door hinge 101, and the door side member 122 attached to the door side, that is, the door panel D, can slide on the vehicle body side, that is, the vehicle body side member 121 attached to the door pillar P. It is connected to the.

The vehicle body side member 121 includes a pillar mounting member 123 and a sliding member 124, which are swingably connected by a pin 125. As shown in FIG. 5B, the sliding member 124 has constricted portions 126 at, for example, a total of three positions, ie, a fully opened position and two intermediate positions.
The door side member 122 has a pair of restricting members 127 therein. The restricting member 127 is urged against the sliding member 124 by the elastic member 128.

The vehicle body side member 121 and the door side member 122 are provided with mounting holes 121a and 122a, respectively, and bolts (not shown) are inserted through them to be screwed to the door pillar P and the door panel D, respectively.
When the door is opened and closed, the sliding member 124 of the vehicle body side member 121 slides in the door side member 122.

  The door side member 122 slides along the sliding member 124 of the vehicle body side member 121 in conjunction with the door panel D, that is, the door opening / closing operation. For example, when the door is opened and the door side member 122 of the door hinge 101 rotates in the direction of arrow A shown in FIG. 4, the door side member 122 slides in the direction of arrow B. At this time, when the restricting member 127 of the door-side member 122 reaches the constricted portion 126, the restricting member 127 moves toward the constricted portion 126 side along the surface of the sliding member 124 due to the urging of the elastic member 128. 126 fits loosely. Therefore, the door side member 122 cannot slide along the sliding member 124 any more. As a result, the door check 102 regulates the rotation of the door hinge 101 and semi-fixes the door at the position.

  As described above, unless a certain force is applied to the door, the door is held in a half-open state at a position where the restricting member 127 is loosely fitted to the constricted portion 126. However, if a certain force is applied to the door, the restricting member 127 is disengaged from the constricted portion 126 against the biasing of the elastic member 128, and the door-side member 122 can be slid along the sliding member 124 again, so that the door freely rotates. Therefore, the user can hold the door in the half-opened state in two positions other than full-closed and full-open in the above example, and even if the door is gravity caused by a slight inclination of the road surface, Opening and closing can be prevented.

However, in the door hinge 101 and the door check 102 described above, the door can be held in a half-open state only at the position where the constricted portion 126 is provided. Moreover, two members, a door hinge and a door check, are required.
The present invention has been made in view of the above problems, and an object of the present invention is to provide an automobile door hinge that can hold a door in a half-open state at all positions and does not require a separate door check.

  In order to achieve the above object, a door hinge of the present invention is a door hinge having first and second piece members that can turn relative to each other, and includes a turning control member and the turning control member as a first and a second piece. And the second piece member and the rotation control member are provided with first and second occlusal portions in the form of surface gears on the contact surfaces of each other.

  The door hinge preferably includes a friction material between the first piece member and the rotation control member.

  According to the door hinge of the present invention, the elastic member presses the rotation control member against the first and second piece members, the rotation control member is engaged with the second piece member, and the first piece member is rotated. Therefore, the first piece member cannot rotate with respect to the second piece member. On the other hand, when a force in the direction of rotation is applied to the first and second piece members at a certain level or more, the surface gear-shaped occlusal portions of the rotation control member and the second piece member are displaced from each other, and the rotation control is performed. The member moves in the opposite direction to the first and second piece members against the pressure contact of the elastic member. As a result, the friction between the rotation control member and the first piece member is weakened, so that the first piece member can be turned with respect to the second piece member. That is, the door can be held in a half-opened state at all positions, and can be rotated by applying a certain force or more. Further, unlike the above-described conventional door hinge, a door check as a separate member is not required.

  By providing the friction material between the first piece member and the rotation control member, the frictional force between them is further increased, and the door holding force is increased.

Hereinafter, preferred embodiments of the door hinge of the present invention will be described in detail with reference to the drawings.
FIG. 1A is an exploded perspective view showing a door hinge 1 according to an embodiment of the present invention. The door hinge 1 includes a mail 2 and a mail 3 as first and second pieces that can rotate relative to each other, a rotation control member 4, and an elasticity that presses the rotation control member 4 against the mail 2 and the mail 3. A spring 5 as a member and a pin 6 that connects these members to each other so as to be rotatable are provided.

  The mail 2 is composed of a base 21 and a piece portion 22 connected to each other. A shaft hole 21a is formed in the base 21 and a pin 6 is inserted into the shaft hole 21a so as to be connected to the mail 3 so as to be rotatable. Is done. Two mounting holes 22a are formed in the one portion 22 and are screwed into the door pillar P by inserting bolts (not shown) therethrough. The above-described configuration is the same as that of the vehicle body side member of the conventional door hinge. However, the mail 2 of the present embodiment is different from the vehicle side member of the conventional door hinge in that the friction material 23 is provided on the contact surface with the rotation control member 4. Different. The friction material 23 is a donut-shaped member made of a material having a high friction coefficient such as rubber, and covers the contact surface of the mail 2 with the rotation control member 4.

  The female 3 is composed of a base 31 and a piece portion 32. A shaft hole 31a is formed in the base 31, and the pin 6 is inserted into the shaft hole 31a so as to be rotatably connected to the mail 2. Mounting holes 32a are formed in the one portion 32, and bolts (not shown) are inserted through these holes 32 so as to be screwed to the door panel D. The above configuration is the same as that of the door side member of the conventional door hinge. However, the mailer 3 of the present embodiment has a recess 33 in which the rotation control member 4 is fitted, and the rotation control member 4 in the recess 33 and It differs from the door side member of the conventional door hinge in the point which equips the contact surface of this with the 1st occlusion part 34 of face gear shape. The diameter of the shaft hole 31a is larger than the outer diameter of the friction material 23 and the contact surface 42 of the rotation control member 4 described later. The upper edge of the recess 33 is threaded 35 for screwing with the pin 6.

  The rotation control member 4 is a disk-like member that is pressed against the mail 2 and the mail 3 by a spring 5 as an elastic member, and controls the relative rotation of the mail 2 and the mail 3. As shown in FIG. 1B, the contact surface 41 with the spring 5 is provided on the periphery of the upper surface, and the contact surface 42 with the friction material 23 of the mail 2 as shown in FIG. 3 and a second occlusal portion 43 in the form of a surface gear provided on the contact surface with the first occlusal portion 34. A shaft hole 44 through which the pin 6 is inserted is formed at the center.

  The spring 5 is a so-called string-wound spring, and its upper end 51 is brought into contact with the pin 6 and its lower end 52 is brought into contact with the friction material 23 and pressed in a direction away from each other.

  The pin 6 is a so-called rotation shaft, and includes a shaft portion 61 and a disc portion 62 provided at the upper end thereof. The outer edge of the disc portion 62 is threaded 63.

  A first bush 7 is provided between the mail 2 and the mail 3 to reduce friction between the mail 2 and the mail 3. The first bush 7 is a ring-shaped member, and the inner diameter thereof is larger than the outer diameter of the friction material 23.

  From the lower side of the mail 2, the second bush 8 is inserted into the shaft hole 21a. The second bush 8 includes a cylindrical portion 81 and a flange portion 82 provided in a bowl shape at the lower end thereof. The cylindrical portion 81 is inserted into the shaft hole 21a, and the flange portion 82 contacts the lower peripheral edge of the shaft hole 21a. Touch. The inner diameter of the cylindrical portion 81 is larger than the outer diameter of the shaft portion 61 of the pin 6, and the outer diameter is smaller than the inner diameter of the shaft hole 21a.

  A washer 9 is disposed below the second bushing 8 to reduce friction between the pin 6 and the second bushing 8. The washer 9 is a ring-shaped disk, and its inner diameter is larger than the outer diameter of the shaft portion 61 of the pin 6.

  In assembling the door hinge 1, first, the rotation control member 4 and the spring 5 are disposed in the recess 33 of the female 3, and the pin 6 is positioned around the center of the spring 5 and the shaft hole 44 of the rotation control member 4. Through the shaft hole 31 a of the female 3, the center of the first bush 7, the shaft hole 21 a of the male 2, the cylindrical part 81 of the second bush 8, and the washer 9 in the order described above, the disk part The threading 63 of 62 is screwed onto the threading 35 of the recess 33. Finally, a portion of the shaft portion 61 that protrudes below the washer 9, that is, a lower end of the shaft portion 61 is crimped, and these members can be rotated about the shaft portion 61 by the crimping portion 61a. Hold so that it does not come off.

  The operation of the door hinge 1 will be described with reference to FIGS. The spring 5 presses the rotation control member 4 downward in FIG. Here, each tooth 43a of the occlusal portion 43 of the rotation control member 4 has two opposite slopes 43b and 43c, as shown in FIG. Each tooth 34a of the portion 34 has two opposing slopes 34b, 34c corresponding thereto. Therefore, when the occlusal portion 43 of the rotation control member 4 is pressed against the second occlusal portion 34 of the female 3, the teeth 43 a mesh with the teeth 34 a. Further, since the rotation control member 4 is also pressed against the mail 2, the contact surface 42 contacts the friction material 23 of the mail 2, and strong friction is generated between the contact surface 42 and the friction material 23. With the above operation, the mail 3 is restricted from turning relative to the turning control member 4, and the mail 2 is restricted from turning relative to the turning control member 4. That is, the mail 2 and the mail 3 cannot rotate with respect to each other. Therefore, the door cannot be rotated with respect to the vehicle body and is held at the opening angle.

  When a certain force or more is applied to the door in the rotational direction, a force in the rotational direction acts on the mail 3 against the mail 2. For example, when trying to open the door, a force directed to the right as shown by an arrow C in FIG. At this time, since the rotation control member 4 is restricted in rotation by friction with the mail 2, it cannot rotate according to the mail 3. For this reason, the right slope 34c of the teeth 3a of the mailer 3 is pressed against the left slope 43b of the teeth 43a of the rotation control member 4. Then, since the rotation control member 4 cannot rotate, an upward component force indicated by an arrow D in the figure is generated, and the entire rotation control member 4 is shifted upward against the pressing of the spring 5.

  As a result, as shown in FIG. 3A, a gap is generated between the contact surface 42 of the rotation control member 4 and the friction material 23 by the amount of displacement of the rotation control member 4. Therefore, the frictional force does not work between the contact surface 42 and the friction material 23, and the rotation control member 4 can rotate according to the Hime 3. That is, the mail 2 and the mail 3 can be rotated with respect to each other, and thus the door can be rotated with respect to the vehicle body by applying a certain force to the door in a rotation direction.

  When the rotational force on the door weakens again below a certain level, the rotational control member 4 cannot resist the pressing of the spring 5. Then, the occlusal portion 43 of the rotation control member 4 is brought into pressure contact with the occlusal portion 34 of the female 3 again. At the same time, since the rotation control member 4 is pressed against the mail 2, strong friction is generated between the contact surface 42 and the friction material 23 of the mail 2. Therefore, the door cannot be rotated with respect to the vehicle body and is held at the opening angle.

  As described above, according to the door hinge 1 of the present embodiment, the door can be held at the opening angle in a state where a force exceeding a certain level is not applied to the door, and the door hinge 1 can be rotated by applying a force exceeding a certain level. Can be moved. That is, the conventional door check becomes unnecessary, and the door can be semi-fixed and held in the half-open state at all positions.

  In the above, one embodiment of the door hinge of the present invention has been described. However, the positional relationship and the material are examples, and an optimal one should be appropriately selected according to the vehicle body or the door to be attached. The present invention can be implemented in various forms without departing from the scope. The present invention is not limited to automobile doors and can be applied to various hinges.

It is a disassembled perspective view of the door hinge which concerns on embodiment of this invention, (a) shows the whole door hinge, (b) shows what turned the rotation control member upside down. It is sectional drawing which shows the semi-fixed state of the door hinge of FIG. 1, (a) shows the whole door hinge, (b) shows the AA cross section of the contact surface of the rotation control member and female in (a). 2A and 2B are cross-sectional views illustrating a state in which a certain level of force is applied to the door hinge of FIG. 1, in which FIG. 1A is the entire door hinge, and FIG. Indicates. It is a perspective view which shows the conventional door hinge. The conventional door check is shown, (a) is a perspective view, (b) is a top view.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door hinge 2 Male 3 Female 4 Rotation control member 5 Spring 6 Pin 21 Base 21a Shaft hole 22 Single part 22a Mounting hole 23 Friction material 31 Base 32 Single part 33 Concave part 34 First occlusal part 34a Teeth 34b, 34c Slope 35 Thread cutting 42 Contact surface 43 Second occlusal portion 43a Teeth 43b, 43c Slope 44 Shaft hole 51 Upper end 52 Lower end 61 Shaft portion 62 Disc portion 63 Threading 81 Cylindrical portion 82 Flange portion 101 Door hinge 102 Door check 111 Car body side member 112 Door side member 111a, 112a mounting hole 113 hinge pin 121 vehicle body side member 122 door side member 121a, 122a mounting hole 123 pillar mounting member 124 sliding member 125 pin 126 constricted portion 127 regulating member 128 elastic member P door pillar D door panel

Claims (2)

A door hinge having first and second piece members rotatable relative to each other,
A rotation control member, and an elastic member that presses the rotation control member against the first and second piece members,
The door hinge according to claim 1, wherein the second piece member and the rotation control member are provided with first and second occlusal portions in the form of surface gears on contact surfaces of each other.   The door hinge according to claim 1, wherein a friction material is provided between the first piece member and the rotation control member.