JP4823848B2 - Hinge structure - Google Patents

Description

  The present invention relates to a hinge structure that enables rotation about a rotation center.

  Conventionally, hinges have been used for door support portions and folding structure portions.

  In many of such general hinge structures, the end of the second component is rotatably supported by the end of the first component, and the two components are centered on the pin. It is comprised so that it can rotate.

  However, such a hinge structure requires a pin that is separate from the two constituent members, which has been a high cost factor.

  The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a hinge structure capable of reducing the cost.

In order to solve the above-mentioned problem, in the hinge structure according to claim 1 of the present invention, in the hinge structure in which the first component member and the second component member are rotatably connected, a cross-sectional circle is provided at the tip of the neck portion. A shaft portion provided with a shaped head is formed integrally with the first component member, and a holding portion for rotatably holding the head portion is formed on the second component member, and the holding portion is connected to the head portion. An outer fitting portion that is fitted onto the outer fitting portion, and a neck portion insertion portion through which the neck portion is inserted while the head portion is inserted into the outer fitting portion, and the outer fitting portion and the neck portion insertion portion are configured as the second configuration. While opening at least one side surface of the member to enable the insertion of the head portion from the one side surface side into the outer fitting portion, the width dimension of the neck insertion portion is set smaller than the diameter dimension of the head portion And the second component member with the head as the center. When the first component is rotated with respect to the second component around the head, the size is set to allow the neck to move within the neck insertion portion when rotated. In addition, a rotation restricting structure that abuts each other to restrict rotation in the rotation direction and that can hold a load in the rotation direction is provided.

  In other words, the first component member is integrally formed with a head having a circular cross section through a neck portion, and the second component member is formed with a holding portion that rotatably holds the head portion. Yes.

  For this reason, the first component member and the second component member are rotatably connected by holding the head portion rotatably on the holding portion.

  Further, the outer fitting portion and the neck portion insertion portion constituting the holding portion are open on at least one side surface of the second component member, and the head portion provided on the first component member is disposed on the head portion. The first component member and the second component member can be pivotably connected by being inserted into the outer fitting portion of the second component member from one side surface side.

  At this time, the width dimension of the neck part insertion part is set smaller than the diameter dimension of the head part, and is set to a dimension allowing movement of the neck part in the neck part insertion part. For this reason, rotation of the both structural members around the head is allowed while preventing the head from being accidentally removed from the outer fitting portion.

Further , when the first component member is rotated by a predetermined amount with respect to the second component member, the rotation restricting structure restricts the rotation in the rotation direction.

  For this reason, in this rotation restricted state, even if a load is applied to the first component member or the second component member, the rotation in the rotation direction is prevented.

Further , in the state where the first component member is rotated with respect to the second component member and the rotation in the rotation direction is restricted, when the rotation force in the rotation direction is further applied, the rotation is performed. The force is converted into a force that narrows the width dimension of the neck insertion portion.

  For this reason, in this rotation restricted state, even if a large load is applied to the first component member or the second component member, by reducing the width dimension of the neck portion insertion portion, Inadvertent dropout of the head is prevented.

  As described above, in the hinge structure according to claim 1 of the present invention, the first component member is rotatably held by the holding portion of the second component member, thereby the first component member. The component member and the second component member can be rotatably connected without using a separate member.

  For this reason, the first component member and the second component member are reduced in cost compared to the conventional case in which the first component member and the second component member must be rotatably connected by a pin that is a separate body. And the structure can be simplified.

  In addition, work for passing a pin made of a separate member through both the constituent members is not required, so that workability is improved.

  Therefore, member cost and manufacturing cost can be suppressed, and cost reduction can be achieved.

Also, the head of the previous SL first component in the connected state and inserted into the outer fitting portion of the second component, while preventing inadvertent omission of the head from the outer fitting portion Rotation of the two component members around the head can be allowed.

  And the said external fitting part and the said neck part insertion part are opened in the at least one side surface of the said 2nd structural member. For this reason, the connection operation | work of the said 1st structural member to the said 2nd structural member from this one side surface can be enabled.

Furthermore, the pre-Symbol first component and a predetermined amount of rotation relative to the second component, the rotation restricting state of restricting the rotation of the rotational direction, the first component or the second component Even when a load is applied, rotation in the rotation direction can be prevented.

  Therefore, the present invention can be applied to, for example, a foldable step in which a load is applied in a state in which both the structural members are rotated by a predetermined amount and restricted from rotating.

In addition, the pre-Symbol first component and a predetermined amount of rotation relative to the second component, the rotation restricting state of restricting the rotation of the direction of rotation, said first component or said second component When a large load is applied to the neck portion, the width of the neck portion insertion portion is reduced to prevent the head from being inadvertently detached from the neck portion insertion portion.

  For this reason, when applied to, for example, a foldable step in which a load is applied in a state in which both the constituent members are rotated by a predetermined amount and are restricted, inadvertent detachment of the step in the event of an overload is ensured. Can be prevented.

  (First embodiment)

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a hinge structure according to the present embodiment, and shows an example in which the hinge structure is applied to a folding step 1 provided in a vehicle.

  In other words, the folding step 1 includes a first component member 11 that constitutes a tread plate, and a second component member 12 that is fixed to the vehicle body that rotatably supports the first component member 11. A folded state 13 in which the first component member 11 is rotated upward with respect to the second component member 12 and is raised upward, and the first component member 11 is disposed on the second component member 12 so as to extend. Thus, the unfolded state 14 can be formed while maintaining the level.

  The first component member 11 is formed in a plate shape by extrusion molding of aluminum, and the upper surface 21 constitutes a tread surface for extension. A lower extending portion 22 is integrally formed along the lower surface 23 at the lower base end portion of the first component member 11, and extends downward to the left base end side in the drawing. A neck portion 24 extending upward is integrally formed at the tip of the downward extending portion 22. A cylindrical head portion 25 is integrally formed at the upper end of the neck portion 24 to form a shaft portion 26, and the head portion 25, the neck portion 24, and the downwardly extending portion 22 are formed of the first component member 11. Is extended over the entire length direction (the rear side direction of the drawing).

  In addition, an upper extending portion 31 that extends to the proximal end on the left side in the drawing is integrally formed along the upper surface 21 at the proximal end portion of the first component member 11, The upper extending portion 31 extends over the entire length in the length direction (the rear side in the drawing) of the first component member 11. A protruding amount of the upper extending portion 31 toward the base end side is set to be smaller than a protruding amount of the lower extending portion 22, and a cross section opened upward at the base end portion of the first component member 11. An arcuate movable region 32 is formed between the upper surface 21 and the downward extending portion 22.

  The second component member 12 is also formed in a plate shape by extrusion molding of aluminum, and its upper surface 41 constitutes a tread surface on the base end side. A curved portion 42 is formed on the upper surface 41 of the second constituent member 12 at the top end on the right side of the drawing, extending to the top side of the right side of the drawing on the upper side and curving downward toward the tip. A projecting portion 43 projecting to the right end side in the figure is integrally formed on the lower surface 44 at the lower side of the tip portion.

  A groove-shaped holding portion 51 that rotatably holds the head portion 25 provided in the first component member 11 is formed between the protruding portion 43 and the curved portion 42. The holding portion 51 includes an outer fitting portion 52 having a circular cross section that is fitted to the head portion 25 formed in a columnar shape, and the neck portion 24 in a state in which the head portion 25 is fitted to the outer fitting portion 52. The neck portion insertion portion 53 is inserted through the neck portion insertion portion 53. The neck portion insertion portion 53 extends downward from the outer fitting portion 52 toward the distal end side, and opens obliquely downward in the figure. is doing.

  The outer fitting portion 52 and the neck portion insertion portion 53 are formed over the entire length direction (the rear side direction in the drawing) of the second component member 12, and one side surface 61 of the second component member 12 and others. It opens to the side (only one side 61 is shown). As a result, the head portion 25 provided on the first component member 11 is slid and inserted into the outer fitting portion 52 from either side of both side surfaces 61 of the second component member 12, and at the same time, the neck portion 24 can be inserted into the neck insertion portion 53.

  A width dimension 71 at the neck insertion part 53 is set to be smaller than a diameter dimension 72 of the head part 25, and the head part 25 can be prevented from coming off through the neck part insertion part 53. . A width dimension 71 at the neck insertion part 53 is set to be sufficiently larger than a thickness dimension of the neck part 24, and the first component member 11 is changed from the head component 25 to the second component member 12. On the other hand, it is set to a dimension that allows the neck portion 24 to move in the vertical direction within the neck insertion portion 53 when it rotates.

  The curved portion 42 formed at the upper portion of the distal end portion is in the movable region 32 formed in the first component member 11 with the head portion 25 being fitted in the outer fitting portion 52. The first component member 11 is formed when the first component member 11 is rotated with respect to the second component member 12 around the head 25. The movable region 32 is configured to be movable.

  A tip extension portion 81 extending in the tip direction of the second component member 12 is formed at the tip of the curved portion 42, and a receiving surface parallel to the upper surface 41 is formed on the top surface of the tip extension portion 81. A surface 82 is formed. The receiving surface 82 is configured to form a pair with the lower surface of the upward extending portion 31 provided on the first component member 11, and extends the first component member 11 to the second component member 12. The lower contact surface 83 formed by the lower surface of the upper extension portion 31 is in contact with the receiving surface 82 formed on the curved portion 42 from above while being arranged in the horizontal position in the drawing. The first constituent member 11 is configured to restrict further downward rotation of the free end portion.

  Thereby, when the first component member 11 is rotated with respect to the second component member 12 around the head 25, a rotation restricting structure that abuts each other and restricts rotation in the rotation direction is provided. The lower contact surface 83 of the upper extension portion 31 and the receiving surface 82 of the curved portion 42 are configured.

  Further, the lower contact surface 83 and the receiving surface 82 are both flat surfaces, and the lower side contact surface 83 is in contact with the receiving surface 82, and the two are in close contact with each other. Has been.

  As a result, a foreign matter entry prevention structure that prevents foreign matter from entering the movable region 32 and the holding portion 51 in a rotation restricted state in which rotation of the first component member 11 in the downward rotation direction is restricted. Even when sand, earth, or the like adheres to the first component member 11 and the second component member 12 used as steps, these foreign substances are transferred to the movable region 32 and the holding portion. It is configured to prevent a problem such as mixing with grease filled in 51.

  Further, when an overload is applied to the first component member 11 constituting the extending tread surface, the load is applied from the upwardly extending portion 31 of the first component member 11 to the second component member 12. The circular outer fitting portion formed between the bending portion 42 and the projecting portion 43 is configured to elastically deform the bending portion 42 downward. The width of the neck portion insertion portion 53 is reduced by reducing the diameter of the neck portion 52.

  Thereby, in the rotation control state which controlled the rotation to the rotation direction toward the downward direction of the said 1st structural member 11, the width dimension of the said neck part insertion part 53 is applied to the rotational force applied to the said 1st structural member 11. A conversion structure for converting to a narrowing force is configured.

  Further, in a state where the first component member 11 is disposed on the second component member 12 so as to be extended and kept horizontal in the figure, the side surface 91 of the neck portion 24 of the first component member 11 is the second component member. 12 is configured to abut against the end surface 92 of the projecting portion 43 from the horizontal direction to restrict further downward rotation of the first component member 11.

  Thereby, when the first component member 11 is rotated with respect to the second component member 12 around the head 25, a rotation restricting structure that abuts each other and restricts rotation in the rotation direction is provided. The side surface 91 of the neck portion 24 and the end surface 92 of the protruding portion 43 are configured.

  The side surface 91 and the end surface 92 are both flat surfaces, and the side surface 91 is in contact with the end surface 92 so that they are in close contact with each other.

  Thereby, in the rotation restricted state, a foreign matter entry prevention structure for preventing the entry of foreign matter into the holding portion 51 is configured, and even when sand or earth adheres when used as a step. In addition, it is configured to prevent such a problem that these foreign matters are mixed into the grease filled in the movable region 32 and the holding portion 51.

  In the present embodiment according to the above configuration, the first component member 11 is integrally formed with a head 25 having a circular cross section via the neck portion 24, and the second component member 12 has the above-described configuration. A holding portion 51 that holds the head 25 rotatably is formed. For this reason, the first component member 11 and the second component member 12 are rotatably connected without using another member by holding the head portion 25 rotatably on the holding portion 51. be able to.

  For this reason, compared with the prior art in which the first component member 11 and the second component member 12 had to be connected to each other by pins that are separate from the component members 11 and 12, The member cost can be reduced and the structure can be simplified.

  In addition, work for passing the pins made of different members through both the constituent members 11 and 12 becomes unnecessary, so that workability is improved.

  Therefore, member cost and manufacturing cost can be suppressed, and cost reduction can be achieved.

  Further, the outer fitting portion 52 and the neck portion insertion portion 53 constituting the holding portion 51 are opened on both side surfaces 61 of the second component member 12 (only one side surface 61 is shown), and the first configuration. The first component member 11 and the second component member 12 are inserted by inserting the head portion 25 provided on the member 11 into the outer fitting portion 52 of the second component member 12 from, for example, the one side surface 61 side. Can be pivotally connected.

  At this time, the width dimension 71 of the neck part insertion part 53 is set to be smaller than the diameter dimension 72 of the head part 25 and the dimension allowing the movement of the neck part 24 in the neck part insertion part 53. Yes.

  For this reason, inadequate preparation of the head 25 from the outer fitting portion 52 in a state where the head 25 of the first constituting member 11 is inserted and connected to the outer fitting portion 52 of the second component 12. It is possible to allow the two constituent members 11 and 12 to rotate around the head 25 while preventing the slipping off.

  The outer fitting portion 52 and the neck portion insertion portion 53 open at least on the one side surface 61 of the second component member 12. For this reason, the connection operation | work of the said 1st component member 11 to the said 2nd component member 12 from this one side surface 61 side can be enabled.

  Further, in the rotation restricted state in which the free end portion of the first component member 11 is rotated downward by a predetermined amount with respect to the second component member 12 and the rotation in the rotation direction is restricted, the first component member 11, the lower contact surface 83 of the upwardly extending portion 31 in the first component member 11 is the receiving surface 82 of the curved portion 42 in the second component member 12. And the side surface 91 of the neck 24 of the first component member 11 contacts the end surface 92 of the protrusion 43 of the second component member 12, so that the free end portion of the first component member 11 Further rotation in the downward rotation direction can be prevented.

  For this reason, it is possible to prevent the free end portion of the first component member 11 from drooping downward due to the load applied to the extending tread surface.

  In this rotation restricted state, when a large load is applied to the first component member 11, the upward extending portion 31 of the first component member 11 moves down the curved portion 42 of the second component member 12. The head portion 25 can be prevented from being unintentionally detached from the neck portion insertion portion 53 by bending the head portion 25 and narrowing the width dimension 71 of the neck portion insertion portion 53.

  For this reason, even when an overload is applied to the tread surface formed by the first component member 11 in a state where the first component member 11 is maintained horizontally, the first component member 11 is not prepared. Can be reliably prevented.

  In this rotation restricted state, the lower contact surface 83 of the upper extending portion 31 of the first component member 11 is in close contact with the receiving surface 82 of the curved portion 42 of the second component member 12. When the side surface 91 of the neck 24 in the first component member 11 is in close contact with the end surface 92 of the protrusion 43 in the second component member 12, foreign matter enters the movable region 32 and the holding portion 51. Can be prevented.

As a result, it is possible to prevent foreign matters such as sand and earth from entering the grease in the movable region 32 and the holding portion 51, and to prevent a rotation failure that may occur when foreign matters of grease are mixed. be able to.

  (Second Embodiment)

  FIG. 2 is a diagram showing a second embodiment of the present invention. The same or equivalent parts as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted, and different parts are attached. Only explained.

  That is, the first component member 11 is formed to be thicker than the second component member 12, and extends to the proximal end side on the left in the drawing at the proximal end portion of the first component member 11. A lower extension 201 that reaches the lower part of the second component 12 extends over the entire length of the first component 11 in the length direction (the rear side of the drawing).

  In the state where the upper surface of the lower extension 201 constitutes the upper abutment surface 211 and the first component member 11 is arranged on the second component member 12 so as to be extended and kept horizontal in the figure. The upper abutment surface 211 of the lower extension 201 abuts on the lower receiving surface 212 formed by the tip of the lower surface of the second component member 12 from below, and further the free end portion of the first component member 11. It is comprised so that rotation to the downward direction may be controlled.

  Thereby, when the first component member 11 is rotated with respect to the second component member 12 around the head 25, a rotation restricting structure that abuts each other and restricts rotation in the rotation direction is provided. The first component member 11 is constituted by the upper contact surface 211 of the lower extension portion 201 and the lower receiving surface 212 provided on the second component member 12.

  In addition, at this time, the receiving surface 82 of the curved portion 42 of the second component member 12 and the lower contact surface 83 of the upper extending portion 31 of the first component member 11 are in contact with each other. A large rotational force can be maintained by canceling out the moments around the rotation center of the portion 26.

  The upper contact surface 211 and the lower receiving surface 212 are both flat surfaces, and the upper contact surface 211 is in contact with the lower receiving surface 212 so that they are in close contact with each other. It is configured.

  Thereby, in the rotation restricted state, a foreign matter entry prevention structure for preventing the entry of foreign matter into the holding portion 51 is configured, and even when sand or earth adheres when used as a step. The foreign matter is prevented from being mixed into the grease filled in the holding portion 51.

  Even with such a structure, the same operations and effects as those of the first embodiment described above can be obtained.

  In each of the above-described embodiments, the case where the hinge structure of the present invention is applied to the folding step 1 has been described as an example. However, the present invention is not limited to this and may be applied to other hinge portions. good.

It is a side view which shows the 1st Embodiment of this invention. It is a side view which shows the 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Folding step 11 1st structural member 12 2nd structural member 24 Neck part 25 Head part 26 Shaft part 51 Holding part 52 Outer fitting part 53 Neck part insertion part 71 Width dimension 72 Diameter dimension

Claims (1)

In the hinge structure in which the first component member and the second component member are rotatably connected,
A shaft portion provided with a head having a circular cross section at the tip of the neck is integrally formed with the first component member, and a holding portion for rotatably holding the head portion is formed on the second component member.
The holding portion is configured by an outer fitting portion that is fitted onto the head portion, and a neck portion insertion portion through which the neck portion is inserted with the head portion inserted into the outer fitting portion, and the outer fitting portion and the neck portion While the insertion portion is opened on at least one side surface of the second component member, and the head portion can be inserted from the one side surface side to the outer fitting portion,
A width dimension of the neck insertion portion is set smaller than a diameter dimension of the head portion, and the first component member is rotated with respect to the second component member around the head portion in the neck portion insertion portion. Set to dimensions that allow movement of the neck of
When the first component member is rotated with respect to the second component member with the head as the center, the first component member abuts against each other to restrict the rotation in the rotation direction and to hold the load in the rotation direction. With a rotation restricting structure ,
The first component member is rotated with respect to the second component member around the head, and the applied rotational force is applied in a state where the rotation restricting structure restricts the rotation in the rotation direction. A hinge structure comprising a conversion structure for converting into a force for narrowing a width dimension of a neck portion insertion portion .

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