JP2023028899A - Hinge device - Google Patents

Abstract

To provide a hinge device that generates torque for relative rotation of a bearing part and a shaft part, and generates further barking on relative rotation at a predetermined angular position.SOLUTION: A hinge device 10 comprises a bearing part, and a shaft part that is inserted into the bearing part and rotates relative to the bearing part. The bearing part has a first shaft hole part, and a second shaft hole part that is formed so as to be axially deviated from the first shaft hole part. The shaft part has a first shaft part that is arranged inside the first shaft hole part, and a second shaft part that is arranged inside the second shaft hole part and is formed so as to be axially deviated from the first shaft part. The first shaft part has a sliding part that slides on the first shaft hole part due to relative rotation of the bearing part and the shaft part. The second shaft part has a cushion part that partially protrudes outward. The second shaft hole part has an inwardly protrusion part that protrudes inward and engages with the cushion part at a predetermined angular position.SELECTED DRAWING: Figure 2

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hinge device having a shaft inserted into a bearing.

Patent Literature 1 discloses a rotary damper that includes a main case and a shaft, and applies a braking force by friction between the inner peripheral surface of the main case and the outer peripheral surface of the cylindrical shaft. The rotary damper is attached to an assist grip provided on the vehicle, and applies a braking force to the rotation of the assist grip.

Japanese Patent Application Laid-Open No. 2002-193012

The rotary damper disclosed in Patent Document 1 exerts a braking force by the friction between the inner peripheral surface of the main body case and the outer peripheral surface of the cylindrical shaft body, but the friction between the cylindrical surfaces alone produces a sufficiently large braking force. It may not occur.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hinge device that generates torque for relative rotation of the bearing and shaft and further damps the relative rotation at a predetermined angular position.

In order to solve the above problems, a hinge device according to one aspect of the present invention includes a bearing portion and a shaft portion that is inserted into the bearing portion and rotates relative to the bearing portion. The bearing portion has a first shaft hole portion and a second shaft hole portion formed axially offset from the first shaft hole portion. The shaft portion includes a first shaft portion that is arranged inside the first shaft hole portion and a second shaft portion that is arranged inside the second shaft hole portion and is axially offset from the first shaft portion. , has The first shaft portion has a sliding portion that slides in the first shaft hole portion due to relative rotation of the bearing portion and the shaft portion. The second shaft portion has a cushion portion that partially protrudes outward. The second shaft hole has an inward projecting portion that projects inward and engages with the cushion portion at a predetermined angular position.

ADVANTAGE OF THE INVENTION According to this invention, the hinge apparatus which produces|generates the torque with respect to the relative rotation of a bearing part and a shaft part, and produces|generates further damping|braking to relative rotation in a predetermined angular position can be provided.

1 is a perspective view of a hinge device of an embodiment; FIG. It is an exploded view of the hinge device of the example. It is a perspective view of the axial part of an Example. FIG. 4(a) is a side view of the shaft, and FIG. 4(b) is a bottom view of the shaft. FIG. 5(a) is a top view of the bearing portion of the example, and FIG. 5(b) is a sectional view of the bearing portion of the example. FIG. 2 is a cross-sectional view of the hinge device shown in FIG. 1 taken along line AA; 7(a) is a cross-sectional view taken along line BB of the shaft shown in FIG. 4(a), and FIG. 7(b) is a cross-sectional view taken along line CC of the shaft shown in FIG. 4(a). is a cross-sectional view of. It is an exploded view of a hinge device of a first modification. FIG. 9(a) is a side view of the shaft, and FIG. 9(b) is a bottom view of the shaft. It is a perspective view of a shaft part. It is a perspective view of a bearing part. It is a sectional view of a hinge device of the 1st modification. It is a figure for demonstrating operation|movement of a hinge apparatus. It is a perspective view of the axial part of a 2nd modification.

FIG. 1 is a perspective view of a hinge device 10 of an embodiment. The hinge device 10 is attached to, for example, a handle device provided on a vehicle panel. The handle device is positioned near the ceiling, is rotatably provided by a hinge device 10, and has a storage state and a use state. The handle device is attached to the interior panel of the vehicle in the housed state, and protrudes into the interior of the vehicle in the used state. The handle device has a rotatably provided handle portion, a mounting portion fixed to the vehicle panel, and a spring portion that biases the handle portion in the housing direction.

The hinge device 10 has the function of rotatably supporting the handle portion and suppressing the hammering sound when the handle portion is urged by the spring portion to return to the accommodated state.

Further, the hinge device 10 may be provided, for example, in a console box arranged between the driver's seat and the passenger's seat of the vehicle, and rotatably support the lid. In any case, the hinge device 10 is attached to a rotatable attached member.

The hinge device 10 includes a bearing portion 20 and a shaft portion 22 inserted into the bearing portion 20 . The bearing portion 20 and the shaft portion 22 are provided so as to be relatively rotatable. One of the bearing portion 20 and the shaft portion 22 is connected to one of the handle portion and the mounting portion, and the other of the bearing portion 20 and the shaft portion 22 is connected to the other of the handle portion and the mounting portion.

FIG. 2 is an exploded view of the hinge device 10 of the embodiment. The bearing portion 20 is formed in a bottomed cylindrical shape and receives the shaft portion 22 . The shaft portion 22 is rotatable within the bearing portion 20 , and relative rotation between the shaft portion 22 and the bearing portion 20 generates torque due to friction. The shaft portion 22 will be described with reference to new drawings.

FIG. 3 is a perspective view of the shaft portion 22 of the embodiment. 3A is a view of the shaft portion 22 viewed from above, and FIG. 3B is a view of the shaft portion 22 viewed from below. 4A is a side view of the shaft portion 22, and FIG. 4B is a bottom view of the shaft portion 22. FIG. The shaft portion 22 is made of a flexible resin material, such as a rubber material.

The shaft portion 22 has a first shaft portion 30 , a second shaft portion 32 , a projection portion 34 , an annular projection portion 40 and a cylindrical portion 42 . The first shaft portion 30 and the second shaft portion 32 are axially offset and spaced apart in the axial direction. The first shaft portion 30 is formed in a substantially cylindrical shape. The first shaft portion 30 has a sliding portion 30a formed on the outer peripheral surface. The sliding portion 30 a protrudes outward, is formed to protrude, and is slidable on the inner peripheral surface of the bearing portion 20 . A plurality of sliding portions 30a are formed to be spaced apart in the circumferential direction as shown in FIG. 4(b).

The second shaft portion 32 has a cushion portion 32a partially projecting outward as shown in FIG. 3(b). A pair of cushion portions 32a are formed so as to protrude in opposite directions.

A pair of protrusions 34 are formed to protrude from the upper end surface of the shaft portion 22 . Protrusions 34 are coupled to the box or lid to receive rotational torque. The annular protrusion 40 is located on the upper end side of the first shaft portion 30 and is formed to protrude radially outward. The cylindrical portion 42 protrudes downward from the second shaft portion 32 and forms an axially penetrating inner peripheral surface.

FIG. 5(a) is a top view of the bearing portion 20 of the embodiment, and FIG. 5(b) is a sectional view of the bearing portion 20 of the embodiment. The bearing portion 20 has a first shaft hole portion 50 , a second shaft hole portion 52 , a transmission portion 54 , a bottom portion 56 and a curved surface 60 .

The first shaft hole portion 50 is positioned on the opening side, and the second shaft hole portion 52 is positioned on the bottom portion 56 side and is formed axially offset from the first shaft hole portion 50 . The second shaft hole portion 52 has an inward projecting portion 52a that projects inward and engages the cushion portion 32a at a predetermined angular position. A pair of cushion portions 32a are provided to face each other. The axial region where the inward projecting portion 52 a is located is the second shaft hole portion 52 , and the axial region where the inward projecting portion 52 a is not located is the first shaft hole portion 50 .

The bottom portion 56 has a through hole in the center. A transmission portion 54 projects radially outward and is coupled to the box or lid to receive rotational torque.

The curved surface 60 is formed at least in the first shaft hole portion 50, is curved so as to dent a perfect circle, and varies in distance from the central axis depending on the angular position. For example, when the bearing portion 20 and the shaft portion 22 rotate relative to each other in the direction in which the handle portion changes from the used state to the accommodated state, the curved surface 60 on which the sliding portion 30a of the first shaft portion 30 slides is shifted from the center axis. distance becomes shorter. Thereby, it can be set so that the braking force increases toward the accommodated state.

FIG. 6 is a cross-sectional view of the hinge device 10 shown in FIG. 1 taken along line AA. The first shaft portion 30 is arranged inside the first shaft hole portion 50 , and the second shaft portion 32 is arranged inside the second shaft hole portion 52 . The annular projection 40 fits into the annular recess 58 of the bearing portion 20 . The cylindrical portion 42 is inserted into a through hole formed in the bottom portion 56 . As a result, axial vibration of the shaft portion 22 can be suppressed.

The sliding portion 30a of the first shaft portion 30 slides on the inner peripheral surface of the first shaft hole portion 50 due to the relative rotation of the bearing portion 20 and the shaft portion 22, and generates torque. The inner peripheral surface of the first shaft hole portion 50 is set to have the same diameter as or a slightly smaller diameter than the circumscribed circle of the plurality of sliding portions 30a. As a result, when the bearing portion 20 and the shaft portion 22 rotate relative to each other, the sliding portion 30a abuts against each other at any angular position to generate torque. The cushion portion 32a contacts the inward projecting portion 52a of the second shaft hole portion 52 at a predetermined angular position.

7(a) is a cross-sectional view of line segment BB of shaft portion 22 shown in FIG. 4(a), and FIG. 7(b) is a cross-sectional view of line segment C of shaft portion 22 shown in FIG. 4(a). -C is a cross-sectional view.

In FIG. 7A, the cushion portion 32a is engaged with the inward projecting portion 52a at a predetermined angular position, and relative rotation between the bearing portion 20 and the shaft portion 22 is stopped. The cushion portion 32a deforms in the circumferential direction when engaging with the inward projecting portion 52a. As a result, it is possible to suppress the hitting sound from becoming louder.

The diameter of the circumscribed circle of the second shaft portion 32 including the cushion portion 32a is equal to or less than the diameter of the inscribed circle of the second shaft hole portion 52 excluding the inward projecting portion 52a. That is, the outermost diameter of the second shaft portion 32 including the cushion portion 32a is equal to or less than the inner diameter of the second shaft hole portion 52 excluding the inward projecting portion 52a. Thereby, the cushion portion 32a can be configured so as not to contact anything other than the inward projecting portion 52a during relative rotation.

7B, the sliding portion 30a is in contact with the first shaft hole portion 50. In FIG. The sliding portion 30a is housed in the curved surface 60 which is the most recessed. As a result, the accommodation state of the handle portion can be stabilized. Since the distance from the curved surface 60 to the central axis changes depending on the angular position, the magnitude of the torque when the sliding portion 30a slides on the curved surface 60 changes. For example, when the handle rotates from the housed state to the use state, the sliding portion 30a is gradually and strongly pressed against the first shaft hole portion 50, and the torque is set to increase.

FIG. 8 is an exploded view of the hinge device of the first modified example. Bearing portion 120 is formed in a bottomed cylindrical shape and receives shaft portion 122 . The shaft portion 122 has a soft portion 24 and a hard portion 26 and is made of two types of resin materials. The soft portion 24 is made of a resin material that is softer than the hard portion 26 and has elasticity. Since the shaft portion 22 is integrally formed by two-color molding, the soft portion 24 and the hard portion 26 are not actually disassembled. The inner peripheral surface of the soft portion 24 and the outer peripheral surface of the hard portion 26 are formed with recesses and protrusions that fit together, thereby suppressing misalignment.

The soft portion 24 is provided so as to surround the outer side of the hard portion 26 . The soft portion 24 slides on the bearing portion 120 to generate resistance. The hard portion 26 is arranged inside the soft portion 24 and supports the soft portion 24 . The shaft portion 122 will be described with reference to new drawings.

9A is a side view of the shaft portion 122, and FIG. 9B is a bottom view of the shaft portion 122. FIG. 10 is a perspective view of the shaft portion 122. FIG. The shaft portion 122 has a first shaft portion 130 , a second shaft portion 132 , a projection portion 34 , a flange portion 36 , a slit 38 , an annular projection portion 40 and a cylindrical portion 42 .

The first shaft portion 130 and the second shaft portion 132 are axially offset and spaced apart in the axial direction. The first shaft portion 130 is formed in a substantially cylindrical shape. The first shaft portion 30 has a sliding portion 130a on its outer peripheral surface. The sliding portion 130 a can slide on the inner peripheral surface of the bearing portion 120 . The first shaft portion 130 has a recessed portion to secure an escape space when it is inserted into the bearing portion 120 .

The second shaft portion 132 has a substantially elliptical cross section as shown in FIG. 9B. The second shaft portion 132 has a pair of cushion portions 132a that partially protrude outward. The pair of cushion portions 132a protrude in opposite directions. A space is formed inside the cushion portion 132a, so that the cushion portion 132a is easily bent radially inward.

A slit 38 is formed between the first shaft portion 130 and the second shaft portion 132 , and the flange portion 36 protrudes radially outward from the slit 38 . First shaft portion 130 , second shaft portion 132 and slit 38 are included in soft portion 24 .

A pair of protrusions 34 are formed to protrude from the upper end surface of the shaft portion 122 . Protrusions 34 are coupled to the box or lid to receive rotational torque. The annular protrusion 40 is located on the upper end side of the first shaft portion 130 and is formed to protrude radially outward. The cylindrical portion 42 protrudes downward from the second shaft portion 132 and forms an axially penetrating inner peripheral surface. Projection portion 34 , flange portion 36 , annular projection portion 40 and cylindrical portion 42 are included in rigid portion 26 .

11 is a perspective view of the bearing portion 120. FIG. The bearing portion 120 has a first shaft hole portion 150 , a second shaft hole portion 152 , a transmission portion 54 and a bottom portion 56 . The first shaft hole portion 150 is positioned on the opening side, and the second shaft hole portion 152 is positioned on the bottom portion 56 side and is formed axially offset from the first shaft hole portion 150 .

The second shaft hole portion 152 has a pair of inward projecting portions 152a that project inward and engage with the cushion portion 32a at a predetermined angular position. The axial region where the inward projecting portion 152 a is located is the second shaft hole portion 152 , and the axial region where the inward projecting portion 152 a is not located is the first shaft hole portion 150 . The pair of inward protruding portions 152a are formed as planes facing each other. Therefore, the inward projecting portion 152a is formed such that the distance from the central axis varies depending on the angular position, and the center of the inward projecting portion 152a is closest to the central axis.

The bottom portion 56 has a through hole in the center. A transmission portion 54 projects radially outward and is coupled to the box or lid to receive rotational torque.

FIG. 12 is a cross-sectional view of the hinge device 110 of the first modified example. Although FIG. 12 shows the cushion portion 32a overlapping the inward projecting portion 152a, the cushion portion 32a is actually pushed into the inward projecting portion 152a and bent radially inward. .

The first shaft portion 130 is arranged inside the first shaft hole portion 150 , and the second shaft portion 132 is arranged inside the second shaft hole portion 152 . The annular projection 40 fits into the annular recess 58 of the bearing portion 120 . As a result, axial vibration of the shaft portion 122 can be suppressed. Further, the flange portion 36 is close to the inner peripheral surface of the bearing portion 120 in the middle of the axial position of the shaft portion 122 . As a result, axial vibration of the shaft portion 122 can be suppressed, and the rotation of the shaft portion 122 can be stabilized.

The first shaft portion 130 is the soft portion 24 and is in close contact with the hard portion 26 between the flange portion 36 and the annular projection 40 to suppress axial displacement. The sliding portion 30 a and the cushion portion 32 a are made of a resin material that is softer than the bearing portion 120 . By suppressing the material ratio of the soft portion 24 , the hard portion 26 can secure the rigidity of the shaft portion 122 . Also, the amount of the expensive soft portion 24 can be reduced. The cylindrical portion 42 is inserted into a through hole formed in the bottom portion 56 .

The sliding portion 130a of the first shaft portion 130 slides on the inner peripheral surface of the first shaft hole portion 150 due to the relative rotation of the bearing portion 120 and the shaft portion 122, and generates torque. The inner peripheral surface of the first shaft hole portion 150 is set to have the same diameter or a slightly smaller diameter than the sliding portion 130a. Thereby, when the bearing portion 120 and the shaft portion 122 rotate relative to each other, torque can be applied at any angular position. The cushion portion 32a contacts the inward projecting portion 152a of the second shaft hole portion 152 at a predetermined angular position.

13A and 13B are diagrams for explaining the operation of the hinge device 10. FIG. FIG. 13 shows cross sections of the second shaft portion 132 and the second shaft hole portion 152 .

In FIG. 13A, the cushion portion 132a is at an angular position where it does not interfere with the inward projecting portion 152a. The diameter of the circumscribed circle of the second shaft portion 132 including the cushion portion 132a is equal to or smaller than the diameter of the inscribed circle of the second shaft hole portion 152 excluding the inward projecting portion 152a. As a result, the cushion portion 132a does not slide on the inner peripheral surface of the second shaft hole portion 152 until it reaches a predetermined angular position where it interferes with the inward projecting portion 152a, thereby suppressing the generation of rotational torque. The minimum outer diameter of the second shaft portion 132 is set equal to or less than the distance between the pair of facing inward projecting portions 152a. As a result, the portion of the second shaft portion 132 other than the cushion portion 132a is prevented from sliding on the inward projecting portion 152a.

In FIG. 13(b), the cushion portion 132a is at an angular position where it begins to contact the inward projecting portion 152a. For example, it is a state in which the user releases the handle and the handle is urged in the accommodation direction and rotated. The cushion portion 132a rotates clockwise in the drawing and comes into contact with the inward projecting portion 152a to receive a resistance force. The cushion portion 132a deforms inward in the circumferential direction and radial direction by engaging with the inward projecting portion 152a.

In FIG. 13(c), the cushion portion 132a is pressed against the inward protruding portion 152a and crushed. For example, it is a state in which the handle portion is in an accommodated state. The cushion portion 132a slides and bites into the inward protruding portion 152a due to the relative rotation of the bearing portion 120 and the shaft portion 122. As shown in FIG. As a result, the torque generated by the engagement between the cushion portion 132a and the inward projecting portion 152a increases. That is, when the cushion portion 132a reaches a predetermined angular position due to the relative rotation of the bearing portion 120 and the shaft portion 122, the cushion portion 132a engages with the inward projecting portion 152a to generate torque, thereby brake the rotation. By the engagement between the cushion portion 132a and the inward projecting portion 152a, it is possible to apply a braking force when the handle portion is in the accommodated state, thereby suppressing the generation of hammering sounds. Further, by setting the positional relationship between the cushion portion 132a and the inward projecting portion 152a, it is possible to set the braking force to be high at a predetermined angular position.

When the handle portion is in use, torque is applied by friction between the sliding portion 130a and the first shaft hole portion 150, and when the handle portion is in the accommodated state, the sliding portion 130a and the first shaft hole portion 150 In addition to the friction, the engagement between the cushion portion 132a and the inward projecting portion 152a applies high torque to brake the relative rotation of the bearing portion 120 and the shaft portion 122. FIG. Since the sliding portion 130a and the cushion portion 132a are made of a soft resin material, the frictional force can be improved.

FIG. 14 is a perspective view of the shaft portion 222 of the second modified example. 14(a) is a view of the shaft portion 222 viewed from above, and FIG. 14(b) is a view of the shaft portion 222 viewed from below. A shaft portion 222 of the second modified example differs from the shaft portion 122 shown in FIG. 8 in that it is not divided into a soft portion and a hard portion and is not two-color molded.

The shaft portion 222 has a first shaft portion 130 , a second shaft portion 132 , an annular protrusion 40 and a cylindrical portion 42 . The first shaft portion 130 has a sliding portion 130 a that slides in the first shaft hole portion 150 , and the second shaft portion 132 is a cushion that engages with the inward projecting portion 152 a of the second shaft hole portion 152 . It has a portion 132a. Torque is applied by the friction between the sliding portion 130a and the first shaft hole portion 150, and in addition to the friction between the sliding portion 130a and the first shaft hole portion 150, the cushion portion 132a and the inward projecting portion are formed at a predetermined angular position. A high torque can be applied by the engagement of 152a.

The present invention is not limited to the embodiments described above, and modifications such as various design changes can be made to each embodiment based on the knowledge of those skilled in the art. Examples may also be included within the scope of the present invention.

Reference Signs List 10 hinge device 20 bearing portion 22 shaft portion 24 soft portion 26 hard portion 30 first shaft portion 30a sliding portion 32 second shaft portion 32a cushion portion 34 projection portion 36 flange portion 38 Slit 40 Annular projection 42 Cylindrical portion 50 First shaft hole 52 Second shaft hole 52a Inward projecting portion 54 Transmission portion 56 Bottom 58 Annular recess 60 Curved surface.

Claims (7)

a bearing;
a shaft portion that is inserted into the bearing portion and relatively rotates,
The bearing portion
a first shaft hole;
a second shaft hole formed axially offset from the first shaft hole,
The shaft portion
a first shaft portion arranged inside the first shaft hole portion;
a second shaft portion disposed inside the second shaft hole portion and formed axially offset from the first shaft portion;
the first shaft portion has a sliding portion that slides in the first shaft hole portion due to relative rotation of the bearing portion and the shaft portion;
The second shaft portion has a cushion portion that partially protrudes outward,
A hinge device, wherein the second shaft hole portion has an inwardly projecting portion that projects inwardly and engages with the cushion portion at a predetermined angular position. 2. The hinge device according to claim 1, wherein the cushion portion deforms in the circumferential direction when engaging with the inward projecting portion. 3. The diameter of the circumscribed circle of the second shaft portion including the cushion portion is equal to or less than the diameter of the inscribed circle of the second shaft hole portion excluding the inward projecting portion. The hinge device according to . 4. The hinge device according to claim 1, wherein the sliding portion and the cushion portion are made of a resin material that is softer than the bearing portion. The sliding portion generates torque by sliding with the first shaft hole,
2. When the cushion portion reaches a predetermined angular position due to relative rotation, the cushion portion engages with the inwardly extending portion and slides to generate torque to brake the relative rotation. 5. The hinge device according to any one of 4. The sliding portion is formed to protrude outward,
6. The hinge device according to any one of claims 1 to 5, wherein the first shaft hole portion has a curved surface whose distance from the central axis changes. The shaft portion
a soft portion including at least the sliding portion and the cushion portion and formed of a soft resin material;
a hard portion arranged inside the soft resin material and formed of a hard resin material;
the hard portion has a flange portion protruding radially outward in the middle of the axial position and close to the inner peripheral surface of the bearing portion;
The hinge device according to any one of claims 1 to 6, wherein the flexible portion has a slit into which the flange portion is inserted.

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