JP3415051B2 - Hinge structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge structure suitable for rotatably attaching a rotating member such as a glow box of an automobile to a fixed member such as an instrument panel.

[0002]

2. Description of the Related Art For example, as shown in Japanese Utility Model Laid-Open No. 62-184047, when a glow box of an automobile is rotatably attached to an instrument panel, the holes of the hinges of both of them are aligned with each other. The method of inserting and fixing the hinge pin is often adopted.

10 to 14 show an example of a conventional glow box mounting device using a hinge pin.
In the figure, reference numeral 10 denotes an instrument panel of an automobile, and a mounting hole 11 for accommodating a glow box 20.
have. A pair of hinge portions 12 protruding in a U-shaped cross section are formed at predetermined intervals at the lower edge portion of the mounting hole 11, and holes 13 for inserting the hinge pins 30 are formed in the opposing wall portions. Has been done.

The glow box 20 has a handle portion 2 on the front surface.
1 has a box shape with an open upper surface. On the lower surface of the glow box 20, there is formed a hinge portion 22 composed of a pair of projecting pieces that come into contact with the inside of the pair of hinge portions 12 on the instrument panel 10 side. Holes 2 for inserting the hinge pins 30 are also provided in these hinge portions 22.
3 is formed.

The hinge pin 30 passes through the hole 23 of the hinge portion 22 of the glow box 20 and further through the hole 13 of the hinge portion 12 of the instrument panel 10 and engages with the opening edge portions thereof, whereby the glow box 20 is secured. It is rotatably attached to the instrument panel 10.

In this conventional example, the hinge pin 30 includes a head portion 31 that engages with the hinge portion 22 of the glow box 20,
It has a shaft portion 32 that is inserted into the holes 23 and 13 of both, and an anchor-shaped engaging portion 33 that engages with the hinge portion 12 of the instrument panel 10. The shaft portion 32 and the engaging portion 33 are
It is formed into a fork by a groove 34 having a U-shaped cross section and extending in the axial direction, and when the engaging portion 33 is passed through the holes 23, 13, the groove 34 is formed.
Is configured to elastically reduce the diameter.

[0007]

However, in the above-mentioned conventional hinge pin 30, as shown in FIG. 13, the initial outer diameter of the shaft portion 32 and each hole 3 are taken into consideration in consideration of manufacturing errors of the holes 23, 13. , 13 are formed in advance with gaps of Δ ₁ and Δ ₂ .

Further, as shown in FIG. 14, when a load is applied to the glow box 20, its hinge portion 2
Due to the load applied to the shaft 2, deflection is generated in the groove 34 of the shaft portion 32, and the gap is further increased. That is, in the state of FIG. 14, the glow box 2 has a width of Δ ₃ + Δ _4.
The relative position between 0 and the instrument panel 10 changes, and a large vibration is generated due to the shaking of the vehicle, and a large rattling sound is generated due to the vibration.

In order to solve this problem, conventionally, a non-woven cloth is wound around the outer periphery of the shaft portion 32 of the hinge pin 30 to form the hole 2
By inserting it in Nos. 3 and 13, rattling was absorbed. However, there is a problem that the workability is very poor because the nonwoven fabric must be wound every time the pin is inserted.

Therefore, it is an object of the present invention to provide a hinge structure capable of effectively absorbing rattling of a rotating member such as a glow box.

[0011]

In order to achieve the above object, the first aspect of the present invention is to align the hole of the hinge portion formed in the rotating member with the hole of the hinge portion formed in the fixing member. In a hinge structure in which one of the holes is an insertion side and the other hole is an insertion side, a hinge pin is inserted into both holes to rotatably support a rotating member, the hinge pin is provided on the insertion side. A flange-shaped head portion that engages with the opening edge portion of the hole, a shaft portion that extends from this head portion and is inserted into the holes of the both, and the insertion side formed at the tip of the shaft portion. An elastically deformable engaging portion that engages with the opening edge portion of the hole, and a large diameter portion and a concave portion extending in the axial direction are formed in the shaft portion, and a void is formed in the concave portion. Has a shaft portion extending from the tip end side toward the head portion, and has a larger diameter than the large diameter portion when there is no external force. An elastic arm having a curved portion is formed, and when the elastic arm is inserted into each of the holes, the elastic arm has both of the hole of the hinge portion on the fixed member side and the hole of the hinge portion on the rotating member side. (EN) A hinge structure characterized by being pressed against the circumference.

According to the first aspect of the invention, since the elastic arm provided on the shaft portion is elastically pressed against the inner peripheries of the holes of both the fixed member and the rotating member, a manufacturing error or the like is taken into consideration. The gap provided is absorbed by the elastic arm, and changes in the relative positions of the fixed member and the rotating member are significantly reduced. Further, when a strong impact force is applied, the elastic arm bends and the relative positions of the fixed member and the rotating member are displaced, but at this time, the large diameter portion provided on the shaft portion contacts the inner circumference of the hole. Contact to minimize the above displacement. Therefore, it is possible to prevent the generation of a loud rattling noise and reduce the vibration noise of the automobile or the like.
According to a second aspect of the present invention, the holes of the hinge portion formed in the rotating member are aligned with the holes of the hinge portion formed in the fixing member, and one of the holes is the insertion side and the other hole is inserted. As a side, in the hinge structure in which the hinge member is rotatably supported by inserting the hinge pin into both holes, the hinge pin is
A flange-shaped head portion that engages with the opening edge portion of the hole on the insertion side, a shaft portion that extends from this head portion and is inserted into the both holes, and is formed at the tip of the shaft portion, An elastically deformable engaging portion that engages with an opening edge portion of the insertion-side hole,
The shaft portion is provided with a large diameter portion located in the hole of the hinge portion on the fixed member side and a large diameter portion located in the hole of the hinge portion on the rotating member side. A recess extending in the axial direction is formed between the diametrical portions, and there is a gap in the dent to extend from the tip end side of the shaft portion toward the head portion, and in the state where no external force is applied, the diametrical portion Also, an elastic arm having a portion whose diameter is also expanded is formed, and when the elastic arm is inserted into each of the holes, the elastic arm has a hole of the hinge portion on the fixed member side and a hole of the hinge portion on the rotating member side. The present invention provides a hinge structure characterized by being pressed against the inner circumferences of both. According to the second aspect of the present invention, the large-diameter portion is arranged in the holes of both the fixed member and the rotating member, and the elastic arm is elastic at the inner circumferences of the holes of both the fixed member and the rotating member. Since it is pressed against, the looseness can be effectively reduced by absorbing the gap by the elastic arm and suppressing the displacement by the large diameter portion.

In a third aspect of the present invention, in the first or second aspect of the invention, the engaging portion is a flange-shaped member having a portion larger than the inner diameter of the hole in a circumferential direction. Are arranged at predetermined intervals in the axial direction, and at least the one located closest to the head is provided with a hinge structure configured to be arranged in the hole.

According to the third aspect of the invention, when the pin is inserted, a portion of the flange-shaped engaging portion that is larger than the inner diameter of the hole can bend and pass through the hole. The part is opened and engaged with the opening edge of the insertion side of the hole to prevent it from coming off. In that case, by providing a plurality of flange-shaped engaging portions in the axial direction at a predetermined interval, even if the thickness of the hinge portion changes depending on the product, it is possible to engage and prevent any of the flanges from coming off. The versatility can be improved. Further, since the one located closest to the head side of the engaging portion is arranged in the hole of the hinge portion, the flange-like engaging portion is pressed into the hole in a bent state, and the rattling sound is made more effective. Can be absorbed.

In a fourth aspect of the present invention, in any one of the first to third aspects of the invention, the elastic arm is flexed toward the concave portion and a back surface of the elastic arm is in contact with the outer diameter of the large diameter portion. The present invention provides a hinge structure that is formed to be substantially equal.

According to the fourth aspect of the present invention, even if the elastic arm bends when a strong impact force is applied, no further displacement occurs when the back surface of the elastic arm abuts against the recess side. The displacement of the fixed member and the rotating member over the entire axial direction can be further reduced in cooperation with the portion.

In a preferred embodiment of the present invention,
The elastic arm extends over both the hole of the hinge portion on the fixed member side and the hole of the hinge portion on the rotating member side. According to this, since the elastic arm contacts the inner circumferences of the both holes, rattling can be absorbed more effectively.

In this case, the tip of the elastic arm is pressed against the inner circumference of one hole, and the protrusion formed on a part of the outer circumference of the elastic arm is pressed against the inner circumference of the other hole. It is more preferable that the elastic arms are reliably pressed against the inner circumferences of the two holes to more effectively absorb the rattling.

Further, in another preferable aspect of the present invention, the elastic arms are provided corresponding to both the hole of the hinge portion on the fixed member side and the hole of the hinge portion on the rotating member side. . According to this, since each elastic arm is reliably pressed against the inner circumference of the corresponding hole, rattling can be more effectively absorbed.

[0020]

1 to 6 show an embodiment of a hinge structure according to the present invention. 1 is a side view, FIG. 2 is a plan view, FIG. 3 is an end view seen from the side of the engaging portion, FIG. 4 is a perspective view, FIG. 5 is a side sectional view of the mounted state, and FIG. 6 is the engaging portion in the mounted state. FIG.

The hinge pin 40 includes a head portion 41 and a shaft portion 4.
2, the head portion 41 has a circular flange shape, and has a plurality of lightening portions 43 on the outer periphery thereof. The head 41 is
The outer diameter is larger than the inner diameter of the hole 13 of the hinge portion 12 of the fixed member (for example, instrument panel) and the hole 23 of the hinge portion 22 of the rotating member (for example, glow box).

The shaft portion 42 extends substantially vertically from the center of one surface of the head portion 41. The tip of the shaft portion 42 has a lightening portion 44.
And the rib 45, and the rib 45 is inclined in a pyramid shape and the hole 2
It is easy to insert it in 3,13. Engagement portions 46 composed of a plurality of flange-shaped members are arranged at predetermined intervals in the axial direction at a portion slightly closer to the base portion than the tip portion. As shown in FIG. 3, the engaging portion 46 has a shape in which square corners are slightly rounded when viewed from the axial direction, and the corners are larger than the inner diameters of the holes 23 and 13.

As shown in FIG. 6, the shaft portion 42 is provided with holes 23, 1
When it is inserted in 3, any one of the engaging portions 46 is adapted to engage with the opening edge portion of the hole 13 of the hinge portion 12 located in the front end direction. Therefore, the hinge portion 23,
Even if the thickness of 13 changes, the engagement is prevented by one of the engaging portions 46, so that the application target can be widened and the versatility can be enhanced. Further, at least the engaging portion 46a closest to the head portion 41 is adapted to be engaged with the engaging portion 46a in the inner periphery of the hole 13,
The corner portion of the engaging portion 46a, which is closer to the one side, is pressed against the inner periphery of the hole 13 to contribute to the absorption of rattling. The engaging portion 46
When “a” bends in the hole 13, its back side contacts the inclined surface 47 of the shaft portion 42 to prevent further bending,
Even if a strong impact force is applied, it is not displaced more than a certain amount.

A recess (or a notch) 48 extending in the axial direction is provided in the shaft portion 42, which is closer to the base portion than the engaging portion 46.
Are formed on the peripheral walls facing each other. Then, it is connected to the shaft portion 42 at the tip end side of the concave portion 48, and from there, the head portion 41.
A pair of elastic arms 50 extending to the side is formed. The elastic arm 50 has a predetermined gap between it and the recess 48, and spreads outwardly of the shaft 42 and extends. When an external force is applied, the elastic arm 50 is brought into contact with the recess 48 and the diameter thereof is reduced. It has become so.

The recess 48, when viewed from the side as shown in FIG. 1, has an inclined portion 48a that is deeply inserted into the center of the shaft portion 42, and a flat end portion 48b that is substantially parallel to the axis of the shaft portion 42. And the width A of the shaft portion 42 forming a portion between the inclined portions 48a.
Write ₁ is narrower than the width A ₂ of the shaft portion 42 which forms a portion between the flat portion 48b. As a result, at the base of the elastic arm 50 to which a strong elastic force is applied, the contact area of the shaft portion 42 with respect to the inner circumferences of the holes 23, 13 is reduced to reduce the insertion resistance.

The portions of the shaft portion 42 located in front of and behind the elastic arm 50 are large diameter portions 51, 52. The large-diameter portions 51 and 52 have the maximum diameters that can be inserted with respect to the inner diameters of the holes 23 and 13 in consideration of variations due to manufacturing errors. The one large diameter portion 51 is the hole 1 of the one member.
3, the other large-diameter portion 52 is located inside the hole 23 of the other member. Also, the elastic arm 5
The outer diameter of the elastic arm 50 is substantially equal to the outer diameter of the large diameter portions 51 and 52 (specifically, within ± 0.2 mm) with the back surface of 0 abutting in the recess 48. Has been done.

Next, a method of attaching the rotating member using the hinge pin 40 will be described. First, the hinge portion 22 of the rotating member (for example, a glow box) is brought into contact with the hinge portion 12 of the fixing member (for example, the instrument panel) to align the holes 13 and 23 of both. In this state, either one of the holes, in this embodiment, the hole 2 on the rotating member side.
The shaft portion 42 of the hinge pin 40 is inserted from 3 toward the hole 13. At this time, since the rib 45 at the tip of the shaft portion 42 has a pyramidal shape, it serves as an insertion guide into the holes 23 and 13. Further, the engaging portions 46 subsequent thereto are inserted into the holes 23 and 13 by bending and bending their corners toward the back side. Furthermore, the elastic arm 50 is also bent into the recess 48 side, and is inserted into the holes 23 and 13.

Then, one of the engaging portions 46 is pulled out from the hole 13 on the fixed member side and engages with the opening edge portion of the hole 13, whereby the hinge pin 40 is prevented from coming off. In this state, the head portion 4 is attached to the hinge portion 22 of the rotating member.
1 engages with each other, the engaging portion 46 engages with the hinge portion 12 of the fixing member, and the hinge pins 22 and 12 are rotatably held by the hinge pin 40.

At this time, as shown in FIG. 6, at least the headmost portion 46a of the engaging portion 46 is the hole 1
3, the corners are bent to the back side and the holes 13
It is inserted while being pressed against the inner circumference. Further, the pair of elastic arms 50 extends from the hole 13 to the hole 23, and
It is pressed against the inner circumference of 3,23. Therefore, the shaft portion 42
The gap between the holes 13 and 23 is absorbed by the pressure contact between the engaging portion 46a near the head and the elastic arm 50, and rattling is prevented.

Further, due to strong vibration of the automobile, a large displacement force acts between the hinge portions 12 and 22, and the engaging portion 4
Even if a load exceeding the elastic force of 6a and the elastic arm 50 is applied, the large-diameter portions 51 and 52 come into contact with the inner peripheries of the holes 13 and 23, and movement of a certain amount or more is prevented, so rattling is reduced. can do. At this time, even if the engaging portion 46a and the elastic arm 50 fall to the back surface side, the back surfaces thereof come into contact with the inclined surface 47 and the flat portion 48b of the recess 48 to restrict the falling, so that the large diameter portion 51, Together with 52, it contributes to the reduction of rattling.

FIG. 7 is a side view showing another embodiment of the hinge structure according to the present invention. It should be noted that substantially the same parts as those in the embodiments shown in FIGS. 1 to 6 are denoted by the same reference numerals and the description thereof will be omitted (the same applies to the following embodiments).

In the hinge pin 60, the elastic arm 61 has an arch shape in which both ends thereof are connected to the shaft portion 42 with a gap between the elastic arm 61 and the concave portion 62. When a strong pressing force is applied to the center of the inner surface of the elastic arm 61, the recess 62
The protrusion 63 is prevented from being deformed toward the side by a certain amount or more.
Are formed. In a state where the elastic arm 61 is deformed and the protrusion 63 is in contact with the recess 62, the outer diameter of the elastic arm 61 is larger than that of the large diameter portion 5.
It is designed to be almost the same as 1,52.

In this embodiment, since both ends of the elastic arm 61 are connected to the shaft portion 42, the elastic force of the elastic arm 61 can be made stronger than that of the embodiment shown in FIGS. . Further, since the central portion of the elastic arm 61 projects most outward, it is easy to be pressed into contact with both the holes 13 and 23. Further, since the protrusion 53 restricts the deformation of the elastic arm 61, it is possible to reduce rattling when a large load is applied.

FIG. 8 is a side view showing still another embodiment of the hinge structure according to the present invention. In this hinge pin 70, two pairs of elastic arms 71, 72 are arranged along the axial direction of the shaft portion 42.
Are formed. Each elastic arm 71, 72 is composed of a pair of members facing each other in the circumferential direction.
74 is formed, and each elastic arm 71, 72 can be elastically deformed.

Then, the hinge pin 70 is connected to the hinge portion 22,
When inserted into the holes 23 and 13 of the twelve, one elastic arm 71
Is pressed against the inner circumference of the hole 13 of one hinge portion 12, and the other elastic arm 72 is pressed against the inner circumference of the hole 23 of the other hinge portion 22. As a result, each hinge portion 12, 2
Since the elastic arms 71 and 72 corresponding to each of the two 2 prevent rattling, the rattling reduction effect can be enhanced.

FIG. 9 is a side sectional view showing a still further embodiment of the hinge structure according to the present invention inserted into a hole. The hinge pin 80 is basically the same as that shown in FIGS. 1 to 6, but is different in that a protruding portion 53 protruding outward is formed in the middle portion of the elastic arm 50. As a result, when the hinge pin 80 is inserted into the holes 23 and 13, the distal end portion 50a of the elastic arm 50 is pressed against the inner circumference of the one hole 23, and the protrusion 53 is located inside the other hole 13. Is pressed against. As a result, the rattling prevention effect can be more reliably provided to the holes 23 and 13.

[0037]

As described above, according to the present invention,
Since the elastic arm provided on the shaft portion is elastically pressed against the inner circumferences of the holes of both the fixing member and the rotating member, the gap provided considering the manufacturing error is absorbed by the elastic arm and fixed. The change in the relative position between the member and the rotating member is significantly reduced. Further, when a strong impact force is applied, the elastic arm bends and the relative positions of the fixed member and the rotating member are displaced, but at this time, the large diameter portion provided on the shaft portion contacts the inner circumference of the hole. Contact to minimize the above displacement. Therefore, it is possible to prevent the generation of a loud rattling noise and reduce the vibration noise of the automobile or the like.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a hinge pin according to the present invention.

FIG. 2 is a plan view of the hinge pin.

FIG. 3 is an end view of the hinge pin as seen from the engaging portion side.

FIG. 4 is a perspective view of the hinge pin.

FIG. 5 is a side sectional view showing how the hinge pin is attached.

FIG. 6 is a cross-sectional view of the vicinity of the engaging portion when the hinge pin is attached.

FIG. 7 is a side view showing another embodiment of the hinge pin according to the present invention.

FIG. 8 is a side view showing still another embodiment of the hinge pin according to the present invention.

FIG. 9 is a side sectional view showing still another embodiment of the hinge pin according to the present invention.

FIG. 10 is an exploded perspective view seen from the lower surface side showing an example of a structure for mounting a glow box of an automobile.

FIG. 11 is a bottom view of the same mounting structure.

FIG. 12 is a front view showing a state in which the glow box is attached.

FIG. 13 is a cross-sectional view showing an insertion portion of a hinge pin in the mounting structure.

FIG. 14 is a sectional view showing a state in which a strong load is applied to the hinge pin.

[Explanation of symbols]

12 Hinge part of fixing member 22 Hinge of rotating member 13,23 holes 40, 60, 80 Hinge pin 41 head 42 Shaft 46 Engagement part 46a Engagement part closest to the head 48, 63, 73, 74 recess 50, 61, 71, 72 elastic arms 51, 52 Large diameter part 53, 63 protrusion

Continuation of the front page (56) Reference JP-A-9-184512 (JP, A) Actually opened 54-92263 (JP, U) Actually opened 57-53109 (JP, U) Actually opened 62-55713 (JP , U) Actual opening 61-7606 (JP, U) Actual opening 62-13457 (JP, U) Actual opening 62-184047 (JP, U) Actual opening 48-80420 (JP, U) Actual opening Flat 4-121791 (JP, U) Jitsuko Sho 56-33934 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) F16C 11/04 F16B 19/00

Claims (4)

(57) [Claims] 1. A hole in a hinge portion formed in a fixing member,
Aligning the holes of the hinge part formed in the rotating member, one of the holes is the insertion side, and the other hole is the insertion side,
In a hinge structure in which a hinge pin is inserted into both holes to rotatably support a rotating member, the hinge pin includes a flange-shaped head portion that engages with an opening edge portion of the insertion-side hole, and the head portion. A shaft portion that is extended from the shaft portion and is inserted into the both holes; and an elastically deformable engagement portion that is formed at the tip of the shaft portion and that engages with the opening edge portion of the insertion-side hole. Having a large-diameter portion and a concave portion extending in the axial direction are formed in the shaft portion, and a gap is formed in the concave portion to extend from the tip end side of the shaft portion toward the head portion, and external force In the absence state, an elastic arm having a portion whose diameter is larger than that of the large diameter portion is formed, and when the elastic arm is inserted into each of the holes, the elastic arm has a hole of the hinge portion on the fixing member side and the rotating member. A hinge structure characterized in that it is pressed against the inner circumference of both of the holes of the hinge part on the side. 2. The hole of the hinge portion formed in the fixing member,
Aligning the holes of the hinge part formed in the rotating member, one of the holes is the insertion side, and the other hole is the insertion side,
In a hinge structure in which a hinge pin is inserted into both holes to rotatably support a rotating member, the hinge pin includes a flange-shaped head portion that engages with an opening edge portion of the insertion-side hole, and the head portion. A shaft portion that is extended from the shaft portion and is inserted into the both holes; and an elastically deformable engagement portion that is formed at the tip of the shaft portion and that engages with the opening edge portion of the insertion-side hole. The shaft portion is provided with a large-diameter portion located in the hole of the hinge portion on the fixed member side and a large-diameter portion located in the hole of the hinge portion on the rotating member side. , A recess extending in the axial direction is formed between the large-diameter portions, and there is a gap in the recess to extend from the tip end side of the shaft portion toward the head portion, and in a state where there is no external force, An elastic arm is formed that has a portion that is wider than the diameter portion, and when inserted into each of the holes, the elastic arm is formed. Hinge structure being characterized in that so as to be pressed against the inner periphery of both the fixed member side of the hinge portion of the hole and the rotating member side of the hinge portion of the hole. 3. The engagement portion is a flange-shaped member having a portion larger than the inner diameter of the hole in a circumferential direction, and the members are arranged at predetermined intervals in the axial direction, and at least the most of them is arranged. The hinge structure according to claim 1 or 2, wherein one positioned on the head side is configured to be arranged in the hole. 4. The elastic arm is formed so as to be substantially equal to the outer diameter of the large-diameter portion in a state where the elastic arm is bent toward the recess side and the back surface of the elastic arm is in contact with the elastic arm. 1
Hinge structure described in 3.