JP5234819B2 - Door hinge - Google Patents

Description

  The present invention includes a first hinge provided on a body, a second hinge provided on a door, the first hinge, a hinge pin that connects the second hinge so as to be relatively rotatable, the first hinge, and the second hinge. And a check mechanism for imparting moderation resistance to the relative rotation of the door hinge.

As a door hinge having a check mechanism, there is one described in Patent Document 1 below.
In these patent documents, a check cam plate provided on the first hinge on the body side and formed with a plurality of grooves on a surface substantially orthogonal to the plane of rotation of the door hinge, and provided on the second hinge on the door side, A check mechanism comprising a bar-like torsion spring that presses against the surface of the plate where the groove is formed is described.

  Then, when the torsion spring is engaged with the groove of the check cam plate, a moderation resistance (check force) is generated in the relative rotation of the first hinge and the second hinge.

JP 2006-63668 Gazette

  However, the contact area between the check cam plate and the rod-shaped torsion spring is narrow, and a large pressure is generated at the contact portion between the check cam plate and the torsion spring in order to obtain a desired check force. Therefore, the check cam plate and the torsion spring must be made of a high-strength material, resulting in a high cost.

  Further, when the thickness of the check cam plate is increased in order to increase the contact area between the check cam plate and the torsion spring, there is a problem that the check cam plate becomes heavy and the door hinge becomes heavy.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a door hinge that can be reduced in weight at a low cost.

  The invention according to claim 1, which solves the above problem, includes a first hinge provided on a body, a second hinge provided on a door, the first hinge, and a hinge pin that couples the second hinge so as to be relatively rotatable. And a check mechanism that imparts moderation resistance to relative rotation of the first hinge and the second hinge. The check mechanism is provided on one of the first hinge and the second hinge. The base end side is fixed to the check pin extending in the direction intersecting the rotation plane of the second hinge and the other hinge of the first hinge and the second hinge so as to press the peripheral surface of the check pin. A check spring having a check cam portion formed on the surface of the plate spring facing the peripheral surface of the check pin and having a groove with which the check pin can be engaged. When a door hinge, characterized in that it consists of.

When the check pin is engaged with the groove of the check cam, a moderation resistance (check force) is generated in the relative rotation of the first hinge and the second hinge.
In the invention according to claim 2, the base end portion of the leaf spring portion of the check cam is inserted into the other hinge of the first hinge and the second hinge, and intersects the peripheral surface of the leaf spring portion. Provided with a cylindrical portion that prohibits movement in the direction, elastically deformed so that it can be inserted from the inlet of the cylindrical portion at the base end portion of the leaf spring portion of the check cam, and when exiting from the outlet of the cylindrical portion, The door hinge according to claim 1, wherein a hook portion capable of contacting the outlet end surface of the cylinder is formed.

  The invention according to claim 3 is characterized in that the base end portion of the leaf spring portion of the check cam is fixed to the other hinge of the first hinge and the second hinge by mechanical means. The door hinge according to Item 1.

  The invention according to claim 4 is characterized in that the check cam portion of the check cam is a resin member formed integrally with the leaf spring portion on the tip side of the leaf spring portion. The door hinge according to any one of the above.

  The invention according to claim 5 is characterized in that the check cam portion of the check cam is a groove formed by bending the tip end side of the leaf spring portion. The door hinge.

  As described above, according to the invention according to claim 1-5, the check mechanism is provided on one of the first hinge and the second hinge, and intersects with a rotation plane of the second hinge. A check pin extending in a direction, a leaf spring portion having a base end fixed to the other hinge of the first hinge and the second hinge so as to press the peripheral surface of the check pin, and the leaf spring portion By forming a check cam having a check cam portion having a groove that can be engaged with the check pin, formed on the surface side facing the peripheral surface of the check pin, The contact area between the check pin and the check cam portion of the check cam can be increased. Therefore, the pressure generated at the contact portion between the check pin and the check cam portion of the check cam can be reduced, the material of the check cam and the check pin is low strength, and the cost is low.

  Further, in order to increase the contact area between the check cam and the check pin, it is only necessary to widen the width of the leaf spring portion of the check cam, and the increase in the weight of the door hinge can be reduced.

It is a disassembled perspective view explaining the door hinge of 1st Embodiment. It is a disassembled perspective view of the 1st hinge of FIG. It is a figure explaining the other example of a form. It is a figure explaining the other example of a form. It is a disassembled perspective view explaining the door hinge of 2nd Embodiment. FIG. 6 is an exploded perspective view of the first hinge of FIG. 5.

Next, embodiments of the present invention will be described with reference to the drawings.
<First Embodiment>
FIG. 1 is an exploded perspective view illustrating a door hinge according to the first embodiment, and FIG. 2 is an exploded perspective view of the first hinge of FIG.

In FIG. 1, the door hinge 1 has a first hinge 3 provided on the body and a second hinge 5 provided on the door.
As shown in FIGS. 1 and 2, the first hinge 3 includes a base 3a that contacts the body, an upper arm 3b that is bent from the upper part of the base 3a, and a lower arm that is bent from the lower part of the base 3a. It consists of a lower arm portion 3c facing 3b.

A hole 3d is formed in the upper arm portion 3b, and a hole 3e facing the hole 3d is provided in the lower arm portion 3c.
As shown in FIG. 1, the second hinge 5 is bent from the upper part of the upper base part 5a, the lower base part 5b, the upper arm part 5c bent from the lower part of the upper base part 5a, and the upper part of the lower base part 5b. The lower arm portion 5d is opposed to the upper arm portion 5c. Further, a bridging portion 5e is provided between the upper arm portion 5c and the lower arm portion 5d so as to bridge between both.

  Although not shown in the drawing, a hole is formed in the upper arm portion 5c, and a hole facing the hole of the upper arm portion is provided in the lower arm portion 5d. Further, the length from the upper surface of the upper arm portion 5c of the second hinge 5 to the lower surface of the lower arm portion 5d is slightly shorter than the length from the lower surface of the upper arm portion 3b of the first hinge 3 to the upper surface of the lower arm portion 3c. It is set to be.

  Then, as shown in FIG. 1, the upper arm portion 5c and the lower arm portion 5d of the second hinge 5 are disposed between the upper arm portion 3b and the lower arm portion 3c of the first hinge 3, and then The bush 7 is fitted from the hole 3d of the upper arm part 3b of the first hinge 3 to the hole of the upper arm part 5c of the second hinge 5, and the lower part of the second hinge 5 is inserted from the hole 3e of the lower arm part 3c of the first hinge 3. The bush 9 is fitted into the hole of the arm portion 5d. Finally, the hinge pin 11 is moved from the bush 7 to the bush 9 (the hole 3d of the upper arm 3b of the first hinge 3 → the hole of the upper arm 5c of the second hinge 5 → the hole of the lower arm 5d of the second hinge 5 → the first The first hinge 3 and the second hinge 5 are connected so as to be relatively rotatable by being inserted into the hole 3e) of the lower arm portion 3c of the hinge 3 and caulking the portion protruding from the bush 9 of the hinge pin 11. ing.

In addition, a check mechanism 21 that provides a moderation resistance to the relative rotation of the first hinge 3 and the second hinge 5 is provided.
The check mechanism 21 of this embodiment includes a check pin 23 provided on the second hinge 5 and a check cam 31 provided on the first hinge 3.

  One end of the check pin 23 is fixed to the front end side of the upper arm portion 5 c of the second hinge 5, and the other end portion is fixed to the front end side of the lower arm portion 5 d, and extends in a direction intersecting the rotation plane of the second hinge 5. ing.

  As shown in FIG. 2, the check cam 31 is a leaf spring in which the base end side is fixed to the base portion 3 a of the first hinge 3 by caulking pins 33 and 35 so as to press the peripheral surface of the check pin 23. The portion 37 and a check cam portion formed on the surface side of the leaf spring portion 37 facing the peripheral surface of the check pin 23 and having a groove with which the check pin 23 can be engaged.

  The check cam portion of the present embodiment is formed integrally with the leaf spring portion 37 on the tip end side of the leaf spring portion 37, and a plurality of check pins 23 (which can engage with the check pin 23 on the side facing the circumferential surface of the check pin 23). In this embodiment, the resin member 39 is formed with two grooves 41.

  When the door is opened and closed, the second hinge 5 rotates with respect to the first hinge 3 about the hinge pin 11 as a central axis. When the second hinge 5 rotates, the check pin 23 engages with the groove 41 of the resin member (check cam portion) 39 of the check mechanism 21, so that the moderation resistance against the relative rotation of the first hinge 3 and the second hinge 5 is achieved. (Checking force) occurs.

According to the above configuration, the following effects can be obtained.
(1) The check mechanism 21 is provided on the second hinge 5 so as to press the peripheral surface of the check pin 23 against the check pin 23 extending in a direction intersecting the rotation plane of the second hinge 5 and the first hinge 3. A plate spring portion 37 having a proximal end fixed to the plate member, and a resin member (check cam portion) formed on a surface side of the plate spring portion 37 facing the peripheral surface of the check pin 23 and having a groove 41 into which the check pin 23 can be engaged. ) 39 to increase the contact area between the check pin 23 and the resin member (check cam portion) 39 of the check cam 31 by increasing the width of the leaf spring portion 37. Can do. Therefore, the pressure generated at the contact portion between the check pin 23 and the resin member (check cam) 39 of the check cam 31 can be reduced, the material of the check cam 31 and the check pin 23 is low strength, and the cost is low. It becomes.

 (2) In order to increase the contact area between the check cam 31 and the check pin 23, it is only necessary to increase the width of the leaf spring portion 37 of the check cam 31, and the weight increase of the door hinge can be reduced.

  In addition, this invention is not limited to the said embodiment. In the above embodiment, the check mechanism 21 is provided in the first hinge 3 and the check pin 23 is provided in the second hinge 5. Conversely, the check pin 23 is provided in the first hinge 3 and the check mechanism is provided in the second hinge 5. 21 may be provided.

  Further, the groove of the check cam 31 is formed in the resin member 39 formed integrally with the leaf spring portion 37 on the distal end side of the leaf spring portion 37. However, as shown in FIG. The groove 63 may be formed by bending.

Further, in the above embodiment, the number of grooves of the check cam 31 is described as two. However, the number of grooves may be one or more. For example, the number of grooves 65 may be four as shown in FIG. .
Second Embodiment
This will be described with reference to FIGS. FIG. 5 is an exploded perspective view for explaining the door hinge of the second embodiment, and FIG. 6 is an exploded perspective view of the first hinge of FIG. The difference between this embodiment and the first embodiment is the check cam, in particular, the attachment to the first hinge 3 on the base end side of the leaf spring portion of the check cam, and the other portions are the same. .

  As shown in FIG. 6, the check cam 131 includes a leaf spring portion 137 whose proximal end is attached to the base portion 3 a of the first hinge 3 so as to press the peripheral surface of the check pin 23, and a check pin of the leaf spring portion 137. The check cam portion is formed on the surface side facing the peripheral surface of 23 and has a groove with which the check pin 23 can be engaged.

  The check cam portion of the present embodiment is formed integrally with the leaf spring portion 137 on the distal end side of the leaf spring portion 137, and a plurality of check pins 23 (which can engage with the check pin 23 on the surface side facing the peripheral surface of the check pin 23). In this embodiment, the resin member 139 is formed with two grooves 141.

  In the present embodiment, the plate 101 is fixed to the base 3a of the first hinge 3 by spot welding or the like. The plate 101 is formed with a first cut and raised portion 103, a second cut and raised portion 103, and a third cut and raised portion 105.

  The first cut-and-raised portion 103 is perpendicular to the base portion 3 of the first hinge 3 and is bent from the front end of the standing wall portion 103a and a standing wall portion 103a that faces one side surface on the thickness side of the leaf spring portion 137 to be inserted. The bent portion 103b is opposed to the side surface in the width direction of the leaf spring portion 137 to be inserted.

  The second cut-and-raised portion 105 is perpendicular to the base portion 3 of the first hinge 3 and is bent from the leading end of the standing wall portion 105a and a standing wall portion 105a facing the other side surface on the thickness side of the leaf spring portion 137 to be inserted. The bent portion 105b faces the side surface in the width direction of the leaf spring portion 137 to be inserted.

The third cut-and-raised portion 107 is orthogonal to the base portion 3 of the first hinge 3 and faces the tip surface of the leaf spring portion 137 to be inserted.
And the base end part of the leaf | plate spring part 137 of the check cam 131 is inserted in the 1st raising part 103 and the 2nd raising part 105, and the movement of the direction which cross | intersects the surrounding surface of the leaf | plate spring part 137 is prohibited. A cylindrical portion is formed.

  In addition, a groove 143 is formed in the base end portion of the leaf spring portion 137 of the check cam 131 along the longitudinal direction from the base end surface, and the width of the groove 143 is narrowed on both sides of the groove 143 (the leaf spring portion 137). The first flexible portion 145 and the second flexible portion 147 are formed so as to be flexible in the direction in which the width of the base end side of the first flexible portion is reduced.

  On the distal end side of the first flexible portion 145 (base end surface side of the leaf spring portion 137) and on the distal end side of the second flexible portion 147 (base end surface side of the leaf spring portion 137), the width direction of the leaf spring portion 137 is set. Spreading hook portions 145a and 147a are formed. Slopes 145b and 147b are formed on the front ends of the hook portions 145a and 147a.

  In the natural state of the leaf spring portion 137, the width W1 (see FIG. 6) of the hook portions 145a and 147a is the width w of the cylindrical portion formed by the first cut and raised portion 103 and the second cut and raised portion 105 (FIG. 6). The width W2 other than the hook portions 145a and 147a (see FIG. 6) is the width w of the cylindrical portion formed by the first cut-and-raised portion 103 and the second cut-and-raised portion 105 (see FIG. 6). ) It is set narrower.

  The attachment of the above configuration will be described. When the base end side of the leaf spring portion 137 is inserted into the cylindrical portion formed by the first cut and raised portion 103 and the second cut and raised portion 105, the inclined surface 145b of the first hook portion 145a and the inclined surface 147b of the second hook portion 147a are obtained. The first wall 103 is in sliding contact with the standing wall 103 a of the first cut-and-raised part 103 and the vertical wall 105 a of the second cut-and-raised part 105. Then, a force in a direction in which the width of the groove 143 is narrowed (a direction in which the width on the base end side of the leaf spring portion 137 is narrowed) is generated on the inclined surfaces 145b and 147b, and the first flexible portion 145 and the second flexible portion. 147 bends in the direction in which the width of the base end portion side of the leaf spring portion 137 is narrowed, and the first hook portion 145a and the second hook portion 147a are formed by the first cut-and-raised portion 103 and the second cut-and-raised portion 105. Inserted into the tube. And if the 1st hook part 145a and the 2nd hook part 147a exit the cylinder part formed by the 1st raising part 103 and the 2nd raising part 105, the 1st flexible part 145 and the 2nd which were bent The flexible portion 147 is elastically restored. Then, the rear end surfaces 145c and 147c of the first hook portion 145a and the second hook portion 147a are formed on the surfaces 103c and 105c serving as outlet end surfaces of the cylindrical portion formed by the first cut and raised portion 103 and the second cut and raised portion 105, respectively. The surface can be contacted, and the first cut-and-raised portion 103 and the second cut-and-raised portion 105 are prevented from coming off from the cylindrical portion.

  According to such a configuration, in addition to the effect of the first embodiment, the check cam 131 can be easily attached and detached as compared with the fixing method using the caulking pin. Therefore, the moderation resistance (check force) can be easily changed by changing the spring constant of the leaf spring portion 137.

3 First hinge 5 Second hinge 23 Check pin 31 Check cam 37 Leaf spring portion 39 Resin member (check cam portion)
41 groove

Claims (5)

A first hinge provided on the body;
A second hinge provided on the door;
A hinge pin for connecting the first hinge and the second hinge to be relatively rotatable;
A check mechanism for providing moderation resistance to the relative rotation of the first hinge and the second hinge;
In a door hinge having
The check mechanism is
A check pin provided on one of the first hinge and the second hinge and extending in a direction intersecting with a rotation plane of the second hinge;
A leaf spring portion having a proximal end fixed to the other hinge of the first hinge and the second hinge so as to press-contact the circumferential surface of the check pin; and the circumferential surface of the check pin of the leaf spring portion; A check cam having a check cam portion formed on opposite surfaces and having a groove with which the check pin can be engaged;
The door hinge characterized by consisting of. A cylindrical portion in which a base end portion of a leaf spring portion of the check cam is inserted into the other hinge of the first hinge and the second hinge and prohibits movement in a direction intersecting the peripheral surface of the leaf spring portion. Provided,
A hook portion that is elastically deformed so that it can be inserted from the inlet of the tube portion at the base end portion of the leaf spring portion of the check cam and can come into contact with the outlet end surface of the tube when it comes out from the outlet of the tube The door hinge according to claim 1, wherein the door hinge is formed.   The door hinge according to claim 1, wherein a base end portion of the leaf spring portion of the check cam is fixed to the other hinge of the first hinge and the second hinge by mechanical means.   The check cam portion of the check cam is a resin member formed integrally with the leaf spring portion on a distal end side of the leaf spring portion. Door hinge.   The door hinge according to any one of claims 1 to 3, wherein the check cam portion of the check cam is a groove formed by bending a distal end side of the leaf spring portion.

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