JPH0558994U - Damper device - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To provide a damper device that allows the lid of a Western-style toilet to be slowly closed by the weight of the lid when the lid is opened, and can be opened with a light force when opening the lid. A first main body 7 having a passage 11 for a floating body 9 on an inner surface, a first body 7 housed in the first main body 7 and rotatable about a point O, and a first concave portion 19 and a first concave portion 19 on an outer surface. The second main body 8 in which the second recess 20 communicating with the second recess 20 is provided along the rotation direction, and the depth of the first recess 19 in the direction toward the center O is deeper than the depth of the second recess 20 in the same direction. And passage 1
The floating body 9 is housed in the first and second recesses 20 and 19 in a state of being in contact with the surface of the first body 8 and the second body 8, and the material of the floating body 9 is rubber. The second main body 8 is rotated in the rotation direction from the second recess 20 toward the first recess 19 side.
When rotating, the floating body 9 moves into the second recess 20,
A structure in which the floating body 9 moves into the first recess 19 when the second main body 8 is rotated in the opposite direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a damper device for braking the opening / closing speed of, for example, a lid of a laptop personal computer, a lid of a toilet bowl, a door, or the like, or a damper device for controlling the moving speed of one of them.

[0002]

[Prior Art]

 Although the hinge that connects the lid of the conventional Western-style toilet to the toilet body is not shown in the figure, for example, the hinge shaft provided on the edge of the lid and the hinge support the shaft so that the hinge is rotatable. , And a bearing portion provided in the toilet body. According to this hinge, the friction resistance when opening and closing is made as small as possible so that the lid can be opened and closed easily. However, when closing the lid, hold it gently by hand to prevent the lid from colliding with the main body and making a loud noise, and to prevent damage to the lid or the main body. Need to rotate in the closing direction.

Therefore, in order to allow the lid to close slowly even if the hand is released from the lid when the angle between the lid and the toilet body is less than 90 °, it is considered to attach the damper device to the hinge. Be done.

Conventionally, in a damper device corresponding to the above purpose of use, as shown in FIG. 11, a rotating shaft 2 provided with a blade 1 for braking at a tip portion and the blade 1 are immersed. Some of them consist of a highly viscous oil 3 and a case 4 for hermetically containing the oil 3. When the damper device is attached to the hinge, the pivot shaft 2 of the damper device is connected to the shaft of the hinge that rotates together with the lid via the one-side clutch, and the case 4 is attached to the toilet body. As a result, when the lid is closed, the lid rotates in the closing direction due to its own weight, but the oil 3 acts as a resistance against the rotation of the blades 1 and the rotating shaft 2 rotates slowly, which causes the lid to close slowly. You can When the lid is lifted in the opening direction, the hinge shaft and the rotating shaft 2 may be disengaged from each other by the one clutch so that the braking force of the damper device does not act, and the lid can be opened with a smaller force. You can make it possible.

[0005]

[Problems to be solved by the device]

 The speed in the closing direction of the lid of the Western-style toilet is that the lid rotates in the closing direction quickly from the state where the lid is opened approximately 90 ° to the angle before the lid is completely closed, and the lid closes from the angle before the lid is completely closed. It is desirable that the lid slowly closes until it comes into the state, so that the lid can be closed quickly. However, in the conventional damper device shown in FIG. 11, the oil 3 serves as a resistance against the rotation of the blades 1 and brakes the rotation of the rotating shaft 2, so that the range of the rotating angle of the rotating shaft 2 (lid) is limited. There is a problem that the magnitude of the braking torque cannot be changed according to the above. There is also a problem that it is necessary to provide a one-way clutch so that the lid can be easily opened. Further, since the oil 3 is used, there is a problem that the oil 3 is troublesome to handle when the damper device is manufactured, which is troublesome. Furthermore, it is difficult to seal the oil 3 so that it does not leak from the case 4, and there is also a problem that the mounting location of the damper device becomes dirty due to the leaked oil 3.

An object of the present invention is to provide a damper device that solves at least the above problems.

[0007]

[Means for Solving the Problems]

 According to a first aspect of the present invention, there is provided a first main body having a passage of the following floating body on a surface thereof, and a first concave portion formed on the surface of the first main body, the first concave portion being movable relative to the first main body along the passage of the first main body. A second recess communicating with the recess is provided along the movable direction, and the depth of the first recess in the direction away from the first main body is deeper than the depth of the second recess in the same direction. A first main body, and a floating body housed in a space formed by the first concave portion, the second concave portion, and the surface of the passage in a state of being in contact with the surface of the passage and the second body. By forming at least one of the second main body and the floating body from a material having an elastic property, the second main body with respect to the first main body in the direction from the first recess toward the second recess. When moved relatively, the floating body moves into the first recess, and the opposite direction The second body toward one in which the floating body when moved relative to the first body characterized by being configured to move into the second recess.

According to a second aspect of the invention, there is provided a first main body having a hollow portion inside and a passage for a floating member described below is formed on an inner side surface forming the hollow portion, and the first main body accommodated in the hollow portion. On the other hand, the first concave portion and the second concave portion communicating with the first concave portion are provided on the outer surface so as to be rotatable relative to the passage relative to the center of the rotation. A second main body in which the depth of the first concave portion in the facing direction is formed deeper than the depth of the second concave portion in the same direction, and the first concave portion, the first concave portion in contact with the surface of the passage and the second main body, And a floating body housed in a space formed by the concave portion and the surface of the passage, and at least one of the first body, the second body, and the floating body has an elastic property. By forming the second concave portion from the second concave portion toward the first concave portion side, 2 When the main body is rotated relative to the first main body, the floating body moves into the second concave portion, and the second main body is rotated relative to the first main body in the opposite direction. It is characterized in that the floating body is configured to move into the first recess when it is moved.

According to a third aspect of the present invention, a first main body having a passage for a floating member described below is formed on an outer surface thereof, and a cavity portion for accommodating the first main body is provided inside thereof, and the above-mentioned relative structure is provided with respect to the first main body. A first concave portion and a second concave portion communicating with the first concave portion are provided on the inner surface so as to be rotatable along the passage and along the rotation direction, and the depth of the first concave portion in the direction away from the center of the rotation. The second main body whose depth is formed deeper than the depth of the second recess in the same direction, and the first recess, the second recess, and the surface of the passage in contact with the surface of the passage and the second main body. A floating body housed in the space to be formed, and at least one of the first main body, the second main body, and the floating body is made of a material having an elastic property, so that Rotate the second body relative to the first body in the rotation direction toward the first recess side. When the floating body is moved into the second recess, the floating body is moved into the first recess when the second body is rotated relative to the first body in the opposite direction. It is characterized by being configured in.

According to a fourth invention, in the first invention, each is provided so as to protrude from the above-mentioned passage at a predetermined distance from each other, and the second main body is arranged in a direction from the first recess toward the second recess. From the first convex portion and the second concave portion, which engage with the floating body moving in the first concave portion when moving relative to the first main body to stop the movement of the second main body in the direction When the second main body is moved relative to the first main body in the direction toward the first recess, it engages with the floating body moving to the second recess and stops the movement of the second main body in the above direction. And a second convex portion to be made.

A fifth aspect of the invention is the second or third aspect of the invention, wherein each of the second and third aspects is projectingly provided in the passage at a predetermined distance from each other, and is arranged in a rotational direction from the first recess toward the second recess. 2 a first convex portion that engages with the moving body that is moving in the first concave portion when the main body is rotated relative to the first main body, and that stops rotation of the second main body in the above direction; When the second main body is rotated relative to the first main body in the rotation direction from the two recesses toward the first recess, the floating body moving into the second recess is engaged to engage the second main body. A second convex portion that stops the rotation in the above-mentioned direction.

A sixth invention is characterized in that, in the first, second or third invention, a step portion projecting to the second main body side is provided along a predetermined section of the passage. A seventh invention is characterized in that, in the first, second or third invention, a small protrusion protruding toward the second main body is provided in the passage. An eighth invention is characterized in that, in the first, second or third invention, the floating body is composed of two or more floating bodies in which at least one of two factors of size and hardness is different. To do.

A ninth invention is characterized in that, in the first, second or third invention, the floating body is composed of a plurality of floating bodies. A tenth invention is characterized in that, in the first, second or third invention, at least one of the first recess and the second recess is elongated along the passage. An eleventh invention is the first, second or third invention, wherein the floating body is cylindrical and the central axis direction thereof is orthogonal to the direction of the passage, and in the direction along the surface of the passage. It is characterized by being provided. A twelfth invention is characterized in that, in the first, second or third invention, the floating body is spherical.

[0014]

[Action]

 In the damper device of the first, second and third inventions, the first main body (or the second main body) can be attached to the fixed side and the second main body (or the first main body) can be attached to the movable side. Also, for both of which is not fixed on either side and has a relationship in which neither side can move with respect to the other, the first body is attached to one of them and the second body is attached to the other. be able to. However, in order to simplify the description, a case where the first main body is attached to the fixed portion and the second main body is attached to the movable portion will be described.

According to the damper device of the first to third inventions, in the state where the floating body is now moving to the first concave portion, the second moving portion is rotated in the direction from the second concave portion toward the first concave portion (rotational direction). When the main body is moved (rotated), first, the floating body moves from the first recess into the second recess while sliding or rolling while being in contact with the surface of the passage and the inner surface of the first recess. It When the floating body is moved to the second recess, the floating body is strongly pressed from both sides by the surface of the passage and the inner surface of the second recess. Since at least one of the first body, the second body, and the floating body is formed of a material having an elastic property, the floating body is provided in the space between the surface of the passage and the inner surface of the second recess. Is allowed. Then, when the second body is moved in the same direction (when it is rotated) while the floating body has moved to the second recess, the frictional resistance between the floating body and the surface of the passage, or the floating body and the second recess The frictional resistance with the inner surface acts as a braking force (braking torque). That is, when the second main body is moved (rotated) in the same direction, this braking force (braking torque) acts, and in order to move (rotate) the second main body in the same direction, a larger force (rotational force) is applied. Is required.

Next, when the second main body is moved (rotated) in the direction (rotational direction) from the first recess toward the second recess while the floating body is moving to the second recess, first, The floating body moves from the second recess into the first recess while sliding or rolling while being in contact with the surface of the passage and the inner surface of the second recess. When the floating body is moved to the first concave portion, the depth of the first concave portion is deeper than the depth of the second concave portion, so that the floating body is pressed from both sides by the surface of the passage and the inner surface of the first concave portion. However, it becomes smaller than when the floating body is in the second recess. Therefore, when the second body is moved (rotated) in the same direction with the floating body moved to the first recess, the frictional resistance between the floating body and the surface of the passage, or the friction between the floating body and the inner surface of the first recess. The frictional resistance acts as a braking force (braking torque), but the braking force (braking torque) at this time is smaller than the braking force (braking torque) when moving (rotating) the second main body in the opposite direction. That is, when the second main body is moved (rotated) in the direction from the first recess toward the second recess (rotation direction), the second main body is moved in the direction from the second recess toward the first recess (rotation direction). A smaller braking force (braking torque) is applied than when (rotated), and a force (rotational force) greater than this small braking force (braking torque) is required to move (rotate) the second body in the same direction. Become .

According to a fourth invention, in the first invention, when the second main body is moved relative to the first main body in a direction from the first recess toward the second recess, the second main body moves to the first recess. The floating body that is engaged engages with the first convex portion to stop the movement of the second main body in the same direction. Then, when the second main body is moved relative to the first main body in the direction from the second concave portion toward the first concave portion, the floating body moving in the second concave portion engages with the second convex portion. Stop the movement of the second body in the same direction.

According to a fifth invention, in the second or third invention, when the second main body is rotated relative to the first main body in a rotation direction from the first recess toward the second recess, The floating member moving to the first concave portion engages with the first convex portion to stop the rotation of the second main body in the same direction. Then, when the second main body is rotated relative to the first main body in the rotation direction from the second concave portion toward the first concave portion, the floating body moving in the second concave portion becomes the second convex portion. Engage to stop rotation of the second body in the same direction.

According to a sixth invention, in the first, second or third invention, the first or second concave portion when the floating body passes through a step provided along a predetermined section of the passage. Since the inner surface of the and the surface of the stepped portion press the floating body from both sides, the force is larger than the force of the floating body pressed from both sides when the floating body passes through the passage without the stepped portion. The braking force (braking torque) that resists the relative movement (rotation) of the second main body with respect to the first main body can be increased in the section in which the idle body does not pass through the step section, in comparison with the section in which the idle body passes through the step section. ..

According to the seventh invention, for the same reason as that of the sixth invention, when the floating body passes through the small protrusion, it is possible to prevent the relative movement (rotation) of the second main body with respect to the first main body. The power (braking torque) can be increased compared to when the small protrusion is not passed.

According to the eighth invention, two or more floating bodies in which at least one of the two factors of size and hardness is different are combined to form one set of the floating bodies as the first, second or third floating bodies. By providing the damper device of the invention, a desired amount of braking force (braking torque) can be generated. According to the ninth invention, a desired amount of braking force (braking torque) is generated as in the eighth invention by combining two or more appropriate numbers of floating bodies to provide one set of floating bodies. Can be made

According to the tenth invention, by forming at least one of the first recess and the second recess long along the passage, the second main body of the second main body with respect to the first main body generates braking force (braking torque). The relative movable range (rotation range) can be long. According to the eleventh invention, by making the floating body cylindrical, when the second main body moves (rotates) relative to the first main body along the passage, the floating main body moves. It can be rolled in the original direction (rotational direction). According to the twelfth invention, by forming the floating body in a spherical shape, the floating body can be rolled as in the eleventh invention.

[0023]

【Example】

 A first embodiment of the present invention will be described with reference to FIGS. The damper device of this embodiment is integrally formed with a hinge that connects the lid 21 of the Western style toilet bowl and the toilet body 22. That is, as shown in FIG. 7, the hinge includes a shaft portion 5 coupled to the lid 21 and a bearing portion 6 rotatably supporting the shaft portion 5 and attached to the toilet body 22. ing. The first main body 7 of the damper device is integrally formed with the bearing portion 6, and the second main body 8 is integrally formed with the shaft portion 5. In addition, 9 and 9 appearing in FIG. 7 are floating bodies.

As shown in FIG. 7, the first main body 7 is made of plastic and has a short cylindrical shape, and the right side opening is closed by a disc. However, a circular hole 10 is bored in the center of the circular plate, and the inner peripheral surface of the circular hole 10 rotatably supports the shaft portion 5. 1 is a cross-sectional view of the damper device of FIG. 7 viewed from the right side axial direction of FIG. As shown in FIG. 1, the inner peripheral surface of the cylindrical first main body 7 is recessed over a range of about 112 ° in the circumferential direction, and the recessed portion of the inner peripheral surface is the passage of the floating body 9. Eleven. Then, a passage 11 equivalent to the passage 11 is provided at a position rotated 180 ° about the point O from the position of the passage 11 over a range of about 112 °. That is, a portion of the inner peripheral surface of the first main body 7 where the two passages 11 are not provided slightly protrudes toward the center (inner side) of the cylinder from the surface of the passage 11 as shown in FIG. The protrusions 12, 12 are formed to have a substantially constant thickness along the circumferential direction.

First, the passage 11 shown on the upper side of FIG. 1 will be described. The left end of this passage 11 ends at the position of the right end of the protruding portion 12, and the right end of this protruding portion 12 corresponds to the first convex portion 13 described in claims 4 and 5. The other end (right end) of the passage 11 ends at the position of the upper end (right end) of the other protrusion 12 in the figure, and the upper end of the protrusion 12 is defined by claim 4, This corresponds to the second convex portion 14 described in 5.

Further, as shown in FIG. 1, according to claim 7, on the side of the first convex portion 13 of the passage 11, over a range of about 17 ° with a predetermined distance from the first convex portion 13. The small protrusion 15 is provided in a protruding manner, and the surface of the small protrusion 15 is formed as an inclined surface that gradually approaches the center O toward the first convex portion 13 side. The interval between the small protrusion 15 and the first convex portion 13 is slightly smaller than the diameter of the floating member 9. As shown in FIG. 1, the floating body 9 is positioned between the first convex portion 13 and the small protrusion 15 and is rotated counterclockwise by 22 ° with respect to the vertical axis P in the figure. is there. As shown in FIG. 1, a step portion 16 described in claim 6 is projectingly provided in a section of about 30 ° adjacent to the second convex portion 14 of the passage 11. The surface of the step portion 16 is formed as an inclined surface that gradually approaches the center O as it goes toward the second convex portion 14 side, and the height of the step portion 16 in the direction toward the center O is the second convex portion. It is lower than the height of 14 in the same direction.

As shown in FIG. 1, the center point O is centered from the respective positions of the first convex portion 13, the second convex portion 14, the small protrusion 15 and the step portion 16 provided in the upper passage 11. The first convex portion 13, the second convex portion 14, the small protrusion 15 and the step portion 16 equivalent to the above are provided in the passage 11 on the lower side of the figure at a position rotated by 180 °. Since the first convex portion 13, the second convex portion 14, the small protrusion 15 and the step portion 16 are the same as those described above, detailed description thereof will be omitted.

The second main body 8 is made of plastic and is formed in a cylindrical shape as shown in FIG. 7, and the shaft portion 5 is projectingly provided at the center of both end surfaces. The right end of the shaft portion 5 shown in the figure is inserted into the circular hole 10 of the disc provided in the right side opening of the first main body 7, and the left end portion of the shaft portion 5 is the disc-shaped lid body 17. It is inserted into a circular hole 18 formed in the center. That is, the second main body 8 is inserted inside the first main body 7 together with the two floating bodies 9, and the shaft portions 5 on both sides are rotated into the corresponding circular holes 10 and 18 in the inserted state. It is supported freely, and the lid is fixedly attached to the left opening edge of the first main body 7.

As shown in FIG. 1, the second body 8 is formed such that the outer diameter thereof is slightly smaller than the inner diameter of the cylinder formed by the surface of the protruding portion 12 of the first body 7. First concave portions 19 are provided along the direction of the shaft portion 5 on the outer surfaces facing the convex portions 13, respectively. A second recess 20 communicating with the corresponding first recess 19 is provided along the direction of the shaft 5 at a position on the side that rotates counterclockwise in FIG. 1 from the position of the first recess 19. .. The cross-sectional shapes of the first recess 19 and the second recess 20 are arc-shaped as shown in FIG. 1, and the depth of the first recess 19 in the center O direction is smaller than the depth of the second recess 20 in the same direction. It is deeply formed.

The floating member 9 is made of rubber, and is formed in an elongated cylindrical shape as shown in FIG. As shown in FIG. 1, the diameter is formed to be slightly longer than the distance between the surface of the passage 11 and the bottom of the first concave portion 19, and the length thereof is substantially the same as the width of the second main body 8. The floating bodies 9 are housed in the two spaces formed by the first recess 19, the second recess 20 and the passage 11 one by one in a state along the direction of the shaft 5.

However, since the material of the first main body 7 and the second main body 8 is plastic and the material of the two floating bodies 9 is rubber having elastic properties, as shown in FIG. When the second main body 8 is rotated in the clockwise direction in the state in which the first recess 19 is present, the clearance between the second recess 20 and the passage 11 becomes smaller than the diameter of the floating body 9 as shown in FIG. It is also possible to move to the narrow second recess 20 side. That is, when the floating body 9 is in the second recess 20, the floating body 9 is in a state of being compressed and deformed.

The operation of the damper device configured as described above will be described below. In the state shown in FIG. 1, the two floating bodies 9 of the damper device are moved to the corresponding first concave portions 19, and the respective floating bodies 9 are in contact with the corresponding first convex portions 13. Therefore, even if a force to rotate the second main body 8 shown in FIG. 1 in the counterclockwise direction (opening direction) is applied, the floating body 9 engages with the inner surface of the first concave portion 19 and the first convex portion 13, As a result, the second body 8 cannot be rotated in the same direction. At this time, the lid 21 of the Western-style toilet connected to the second main body 8 is in a state of being opened 130 ° with respect to the toilet main body 22. Then, in this open state, even if a rotational torque T _a smaller than a certain rotational torque T _b is applied in the closing direction of the lid 21, the floating body 9 engages with the inner surface of the first recess 19 and the small protrusion 15. As a result, the lid 21 cannot rotate in the closing direction (clockwise direction). However, since the second recess 20 communicating with the first recess 19 is provided on the rear side with respect to the rotation direction and the floating body 9 is made of rubber, the second recess 20 is closed in the closing direction with respect to the lid 21. When the rotating torque T _b is applied, as shown in FIG. 2, the floating member 9 is compressed and deformed with rolling and sliding in a state in which the floating member 9 is locked by the small projections 15, and the first concave portion 19 to the second concave portion Transfer to side 20. Then, the floating body 9 comes into contact with the inner surface of the end of the second recess 20, and the lid 21 stops at the position rotated by 18 °. In other words, when the lid 21 is opened by 130 °, it cannot be rotated even if the rotational torque of T _a is applied to the lid 21 in the opening / closing direction, but the rotational torque of T _b is applied to the lid 21 in the closing direction. It will stop at the position rotated about 18 °.

Next, when a rotational torque T _c larger than T _b is applied to the lid 21 in the opened state shown in FIG. 2 in the direction of further closing, the floating body 9 is further compressed and deformed, and a small amount is accompanied by slippage and rolling. Get over the protrusion 15. After overcoming the small protrusions 15, the surface of the passage 11 and the inner surface of the second recess 20 press the floating body 9, and the frictional force generated between the floating body 9 and the surface of the passage 11 is generated. The frictional force generated between the floating body 9 and the inner surface of the second recess 20 becomes the braking torque T _b ′ (T _b ′ <T _b ) in the closing direction of the lid 21, which is the rotational torque T _b smaller than T _c. Then, as shown in FIG. 3, the lid 21 can be rotated in the closing direction. However, when the lid opening angle of the lid 21 with respect to the toilet body 22 is less than 90 ° (actually 60 ° to 80 °), the weight of the lid 21 acts as a rotational torque in the direction to close the lid 21, and thus the lid 21 is rotated. Even if the hand is released from 21, the lid 21 slowly and naturally rotates in the closing direction by its own weight.

Then, as shown in FIG. 4, when the lid 21 is rotated a little before the closed position, the floating body 9 reaches the step portion 16, and at this time, the floating body 9 contacts the inclined surface of the step portion 16. The force by which the step portion 16 presses the floating body 9 toward the second main body 8 side gradually increases as it moves along, and the braking torque of the damper device increases in proportion to this pressing force. Therefore, when the lid 21 rotates in the closing direction to the open position of 30 °, the floating body 9 reaches the step portion 16, whereby the lid 21 rotates while smoothly decelerating the rotation speed, and the floating body 9 moves. It comes into contact with the second convex portion 14, and the lid 21 stops at the closed lid position (FIG. 5) without colliding with the toilet body 22.

Next, when opening the lid 21 from the closed state shown in FIG. 5, the lid 21 is slightly pulled up by hand. Then, a force for moving the floating body 9 from the second concave portion 20 to the first concave portion 19 side is generated based on the elastic force of the floating body 9, but since the floating body 9 is engaged with the second convex portion 14, The floating body 9 rotates the second main body 8 in the opening direction and moves to the first recess 19. That is, when the closed lid 21 is pulled up a little, the lid 21 naturally rotates a little in the opening direction (hop-up) and stops. Then, when the lid 21 that has been lifted a little is rotated in the opening direction by hand, the floating body 9 rolls along with the second main body 8 in the state where the floating body 9 is in the first recess 19 as shown in FIG.

As described above, when the floating body 9 is moved to the first recess 19, the depth of the first recess 19 is deeper than the depth of the second recess 20, so that the floating body 9 contacts the surface of the passage 11 and the first recess 19. The force pressed from both sides by the inner surface of the first recess 19 is extremely smaller than that when the floating body 9 is in the second recess 20. Therefore, when the lid 21 is rotated in the opening direction (the second main body 8 is counterclockwise in FIG. 6) with the floating body 9 moved to the first recess 19, the friction between the floating body 9 and the surface of the passage 11 is caused. The resistance and the frictional resistance between the floating member 9 and the inner surface of the first recess 19 serve as a braking torque. The braking torque T _d ′ at this time is the closing torque of the lid 21 (the second main body 8 is rotated clockwise in FIG. 6). ) It becomes extremely smaller than the braking torque T _b ′ when rotated to (1). That is, when the lid 21 is opened, a smaller braking torque T _d ′ is exerted than when the lid 21 is closed, so that the lid 21 can be easily rotated in the opening direction with a small force.

Then, when the lid 21 is rotated in the opening direction, the floating body 9 reaches the small projection 15 projecting in the passage 11, and the small projection 15 presses the floating body 9 to move it to the floating body 9. Although the frictional resistance with the small protrusions 15 becomes strong and the braking torque becomes a little large, but since the floating body 9 is in the first recess 19, the braking torque at this time is that the floating body 9 is in the second recess 20. The torque is smaller than that. Therefore, the lid 21 can be rotated in the opening direction with a small force until the floating body 9 gets over the small protrusion 15 and contacts the first convex portion 13, and the lid is opened at 130 ° shown in FIG. You can

A second embodiment will be described with reference to FIG. The damper device of the second embodiment is an embodiment of the damper device according to claim 10 in which the second recess 24 is formed long along the passage 11. That is, in the damper device of the second embodiment, as shown in FIG. 8, the second recess 20 of the damper device of the first embodiment is formed long along the outer peripheral surface of the second main body 8. Thus, the second body 8 can be rotated relative to the first body 7 within a range of about 220 °. Therefore, this damper device can be used, for example, as a damper for opening and closing the lid 23, door, etc. of office automation equipment (OA equipment). The parts other than the second recess 24 are the same as those in the first embodiment, and the same parts are designated by the same reference numerals.

In the state shown in FIG. 8, the two floating bodies 9 of the damper device are moved to the corresponding first concave portions 19, and the respective floating bodies 9 are engaged with the corresponding first convex portions 13. .. Therefore, even if a force to rotate the second main body 8 in the counterclockwise direction shown in FIG. 8 is applied, the second main body 8 cannot be rotated in the same direction as in the first embodiment. At this time, the lid 23 of the OA device connected to the second main body 8 is in a state of being opened by 220 ° with respect to the opening edge 25 at which the lid 23 is closed. Then, the addition of rotational torque T _b in the direction of closing the lid 23 in this open lid state, in a state in which the floating body 9 is locked in the small projections 15, and compressive deformation accompanied by rolling and sliding, the first recess Transfer from 19 to the second recess 24 side. Then, when the second main body 8 rotates clockwise by about 108 ° along with the rotation of the lid 23, the floating body 9 comes into contact with the inner surface of the terminal end portion of the second recess 24, and the lid 23 stops at the position rotated by 108 °. .. The operation of this damper device up to the closed state of the lid 23 in the opened state rotated by 108 ° is the same as that of the first embodiment, and detailed description thereof will be omitted.

Next, when the lid 23 in the closed state is opened, the lid 23 is pulled up by hand, but the second concave portion 24 is formed long along the outer periphery of the second main body 8. As in the example, when the lid 23 is slightly pulled up, the lid 23 does not naturally float up, and the braking torque T _b ′ is applied until the floating body 9 moves from the second recess 24 to the first recess 19 (however, the floating body 9 Is greater than T _b ′ in the range in which the gear passes through the stepped portion 16.) When the movable body 9 moves to the second recess 24, the lid 23 is lightly rotated to the opened position of 220 °. be able to.

A third embodiment will be described with reference to FIG. The damper device of this embodiment is integrally formed with a hinge that connects a liquid crystal display side (hereinafter, referred to as "lid 26") of a laptop personal computer and a keyboard side (hereinafter, referred to as "main body 27"). Has been formed. The first main body 28 of the damper device is attached to the hinge shaft portion 29, and the second main body 8 is formed integrally with the hinge bearing portion (not shown). The difference between the third embodiment and the first embodiment is that in the first embodiment, the first main body 7 houses the second main body 8 inside, whereas in the third embodiment, the second main body 7 is housed. The main body 30 has a structure in which the first main body 28 is housed inside, and in the first embodiment, a large braking torque is generated when the lid 21 is rotated in the closing direction from a position of 30 ° before the lid 21 is completely closed. Although the step portion 16 is provided in the passage 11 so as to generate the passage, in the third embodiment, the passage 11 is generated so that a large braking torque is generated in the rotation range of 60 ° in the closing direction of the lid 26 from the fully opened position of 135 °. A small protrusion is provided in the passage 11 so that the lid 21 is properly stopped at the fully open position of 130 ° in the first embodiment, that is, the lid 21 does not rotate unnecessarily in the closing direction. 15 is provided, but the small protrusion 15 is not provided in the third embodiment. And filtration, although the material of the floating body 9 and the rubber in the first embodiment, in the third real 施例 the material of the floating body 9 and the plastic, the material of the first body 28 is the way to the rubber. However, the other parts are the same as those in the first embodiment, the same parts are denoted by the same reference numerals, and detailed description thereof will be omitted.

As shown in FIG. 9, the first main body 28 has a short cylindrical shape, and a plastic shaft portion 29 is fitted in the center thereof. Both ends of the shaft portion 29 are provided on the second main body 30. It is inserted into the lid body 17 on both sides and the circular holes 18 and 10 formed in the disc. That is, the first main body 28 is inserted inside the second main body 30 together with the two floating bodies 9, and in this inserted state, both ends of the shaft portion 29 are rotated to the corresponding circular holes 18 and 10. It is supported freely. Then, as shown in FIG. 9, the outer peripheral surface of the first main body 28 having a short cylindrical shape is recessed over a range of approximately 135 ° in the circumferential direction, and the recessed portion of the outer peripheral surface of the floating body 9 is formed. It is the passage 11. Then, on the outer peripheral surface of the first main body 28, a passage 11 equivalent to the passage 11 is provided at a position which is rotated by 180 ° about the point O from the position of the passage 11 over a range of about 135 °. ing. That is, a portion of the outer peripheral surface of the first main body 28 where the two passages 11 are not provided slightly protrudes outward from the surface of the passage 11 and is substantially constant along the circumferential direction, as shown in FIG. The protrusion 12 having a thickness of 1 is formed.

First, the passage 11 shown on the upper side of FIG. 9 will be described. The left end of the passage 11 ends at the position of the right end of the protrusion 12, and the right end of the protrusion 12 corresponds to the second convex portion 14 of the first embodiment. Then, the other end portion (right end portion) of the passage 11 ends at the position of the upper end portion (right end portion) in the figure of the other protruding portion 12, and the upper end portion of this protruding portion 12 corresponds to the first embodiment. It corresponds to the first convex portion 13 in the example.

Then, as shown in FIG. 9, a step portion 16 is provided on the first convex portion 13 side of the passage 11 so as to be spaced apart from the first convex portion 13 by a predetermined distance over a range of about 60 °. The surface of the end portion of the step portion 16 on the second convex portion 14 side of about 10 ° is formed as an inclined surface that gradually approaches the center O as it goes toward the second convex portion 14 side. .. The height of the step portion 16 in the direction away from the center O is lower than the height of the first convex portion 13 in the same direction. Further, the interval between the step portion 16 and the first convex portion 13 is just a width in which the floating body 9 is inserted, and the cross-sectional shape of the surface thereof appears as a quarter circle arc in FIG. Note that, as shown in FIG. 9, a position that is rotated by 180 ° about the point O from each position of the first convex portion 13, the second convex portion 14, and the step portion 16 provided in the upper passage 11. First projection 13, second projection 14 and step 16 equivalent to the above are provided in the lower passage 11 in the figure. The first convex portion 13, the second convex portion 14, and the step portion 16 are equivalent to those described above, and detailed description thereof will be omitted.

As shown in FIG. 9, the second main body 30 has a short cylindrical shape, the right side opening is closed by a disc, and the left side opening is closed by a lid 17. 17 rotatably supports the shaft 29. As shown in FIG. 9, the second main body 30 has an inner diameter slightly larger than the outer diameter of the cylinder formed by the surface of the protruding portion 12 of the first main body 28. The first recesses 19 are provided along the cylindrical direction on the inner surfaces of the opposing positions, respectively. A second recess 20 communicating with the corresponding first recess 19 is provided along the cylindrical direction at a position on the side that rotates in the clockwise direction in FIG. 9 from the position of the first recess 19. The cross-sectional shapes of the inner surfaces of the first recess 19 and the second recess 20 are arc-shaped as shown in FIG. 1, and the depth of the first recess 19 in the direction away from the center O is the same direction as the second recess 20. It is formed deeper than the depth of. The floating body 9 is equivalent to that of the first embodiment.

However, since the material of the second main body 30 and the floating body 9 is plastic and the material of the first main body 28 is rubber, the floating body 9 is formed in the first concave portion 19 as in the first embodiment. When the first main body 28 is rotated clockwise in a certain state, each floating member 9 has a second recess 20 in which the gap between the second recess 20 and the passage 11 is narrower than the diameter of the floating member 9, as shown in FIG. It is possible to move to the 20 side. That is, when the floating body 9 is in the second recessed portion 20, the floating body 9 is pushed into the second main body 30 side.

The operation of the damper device configured as described above will be described below. In the state shown in FIG. 9, the two floating bodies 9 of the damper device have moved to the corresponding second concave portions 20, and each floating body 9 is in contact with the corresponding first convex portion 13. In this state, when a force for rotating the first main body 28 shown in FIG. 9 in the counterclockwise direction (opening direction) is applied, the lid 26 rotates a little in the opening direction, but the floating body 9 causes the inner surface of the first recess 19 to move. And the first convex portion 13 are engaged with each other, whereby the first main body 28 cannot rotate in the same direction. At this time, the lid 26 of the personal computer, which is connected to the second main body 30, is opened to the main body 27 by about 135 °. Then, when a rotation torque T _h of a certain degree or more is applied in the closing direction (clockwise direction) of the lid 26 in this opened state, the first main body 28 is made of rubber, so that the floating body 9 becomes the second concave portion. In the state of being inside 20, it is pushed toward the first main body 28 side while rolling and sliding, and transfers to the step portion 16. When the floating body 9 moves to the step portion 16, the surface of the step portion 16 and the inner surface of the second recess 20 press the floating body 9, and the floating body 9 and the surface of the step portion 16 are separated from each other. The frictional force generated and the frictional force generated between the floating body 9 and the inner surface of the second recess 20 become the braking torque T _h ′ in the closing direction of the lid 26. Since the step portion 16 is provided over the range of 60 °, the braking torque T _h ′ acts over the range of rotation of 60 ° from the position where the lid 26 is opened at 135 ° shown in FIG. The braking torque T _h ′ allows the lid 26 to be freely stopped at a desired rotation position within this rotation range. Therefore, the screen of the liquid crystal display of this personal computer can be kept in a position where the user can easily see it within this range.

Next, when the rotation position of the lid 26 exceeds 60 °, the floating body 9 is disengaged from the step portion 16, so that the braking torque is reduced and the lid 26 can be lightly rotated in the closing direction by hand. .. However, even when the lid 26 is closed over the stepped portion 16, the floating body 9 is pressed against the surface of the passage 11 and the inner surface of the second recess 20, so that the braking torque T _i ′ ( T _i ′ <T _h ′ is working. Then, when the lid 26 is further rotated in the closing direction, the floating body 9 in the second concave portion 20 contacts the second convex portion 14 of the first main body 28, the rotation of the lid 26 is stopped, and the lid 26 is closed. Becomes

When opening the lid from the closed state, the lid 26 is manually lifted in the opening direction. At this time, the floating body 9 moves from the second concave portion 20 to the first concave portion 19, which reduces the force with which the floating body 9 is pressed from both sides, so that the lid is rotated with a smaller rotation torque than when the lid is closed. 26 can be opened. That is, the braking torque when rotating from the closed position to the rotating position of 75 ° in the opening direction is smaller than the braking torque T _i ′ when closing in this section, and the braking torque from the open position of 75 ° to the fully open position is smaller. The braking torque becomes smaller than the closing braking torque T _h ′ in this section.

At the closed position, the floating member 9 contacts the inner surfaces of the second convex portion 14 and the second concave portion 20 to lock the rotation in the closing direction, but the first main body 28 is made of rubber. Therefore, when a force in the closing direction is applied to the lid 26, the lid 26 is slightly rotated, and at this rotational position, the lid 26 can be locked to the main body 27 by, for example, a hook. With this structure, when the hook is removed to open the lid 26, the elasticity of the first main body 28 causes the lid 26 to slightly open in the opening direction, which allows a finger to be inserted between the lid 26 and the main body 27. Therefore, the lid 26 can be easily opened.

A fourth embodiment will be described with reference to FIGS. 11 to 13. The difference between the damper device of this embodiment and the damper device of the first embodiment is that in the damper device of the first embodiment, as shown in FIG. 5, the floating body 9 is compressed by the step portion 16. While the lid 21 is closed by means of, the retractor 31 of the floating body 9 is provided between the step 16 and the second protrusion 14 as shown in FIG. 13 in the damper device of the fourth embodiment. It is provided in the passage 11 so that the floating member 9 can be restored to its original cylindrical shape in the closed state. Other parts are the same as those in the first embodiment, and detailed description thereof will be omitted.

In this damper device, as shown in FIG. 13, the floating member 9 is restored to the original cylindrical shape in the closed state. As a result, even if the lid is kept closed for a long time, the floating body 9 is not compressed, so that permanent distortion does not occur, and the quality and function of this damper device can be kept good.

According to this damper device, as shown in FIG. 11, when the lid approaches the closed lid position from the open position side, the floating body 9 is compressed by the step portion 16. Therefore, similar to the first embodiment, The braking torque acts on the lid, and the lid slowly rotates to the closed position, and the lid is closed as shown in FIG. In the state of FIG. 12, the floating body 9 is in a compressed state, but a part of the floating body 9 has entered the retracting recess 31, and the floating body 9 expands due to its restoring force, so that FIG. As shown, it moves completely into the retracted recess 31. As a result, the floating body 9 restores to a cylindrical shape in the closed state. Next, when the lid is rotated in the opening direction from the closed lid position shown in FIG. 13, the floating body 9 moves in the order shown in FIG. 13, FIG. 12 and FIG. You can open it with.

A fifth embodiment will be described with reference to FIGS. 14 and 15. As shown in FIG. 14, the damper device of this embodiment is a damper device of the fourth embodiment, in which the first recess 19 and the second recess 20 have bottom surfaces of the first recess 19 and the second recess 20 that extend over the bottom surface of the first recess 19 and the second recess 20. The ridge 32 is provided. The number of the protrusions 32 can be plural depending on the material of the floating member 9 and the like. The purpose of providing the ridge 32 is, as shown in FIG. 6, when the lid 21 is released from the hand during the rotation of the lid 21 to the open position side, the moving body 9 normally comes out of the first recessed portion 19. The lid 21 is moved to the second recess 20 side, and the lid 21 is swung slowly to the closed position side. However, for example, when the floating body 9 is made of a material that is relatively slippery, the floating body 9 is placed in the first recess 19 side. The lid 21 may rotate in the closing direction in the housed state, and in this case, the lid 21 vigorously collides with the toilet body 22, which is to be prevented.

Further, according to the ridge 32, not the entire floating body 9 but only the central portion thereof is pressed against the passage 11 side. Therefore, as shown in FIG. When the lid 21 is opened in the state of being housed in, the lid 21 can be opened with a small force, as in the first embodiment.

FIG. 15 is an enlarged end view of the protrusion 32. The ridge 32 has a width A of about 1 mm and a height B of about 0.4 mm. The width of the second main body 8 is about 20 mm, and the outer diameter is about 15 mm. The width and height of the ridge 32 must be formed to have appropriate dimensions according to the condition of use. FIG. 14 is a cross-sectional view showing a state in which the lid 21 is in the closed position, and shows a state in which the floating body 9 shown by the solid line is restored by its restoring force.

A sixth embodiment will be described with reference to FIG. The damper device of this embodiment differs from the damper device of the first embodiment in that the damper device of the first embodiment has a short cylindrical inner surface of the first main body 7 as shown in FIG. The passage 11 is provided, and the first and second recesses 19 and 20 are provided on the outer peripheral surface of the second columnar body 8 having a short cylindrical shape, so that the floating member 9 having a cylindrical shape is provided on the passageway 11 on the inner peripheral surface of the first main body 7. In the damper device according to the sixth embodiment, the passage 11 is provided on the right side surface of the disc-shaped first main body 7a as shown in FIG. 16, and the disc-shaped second main body is provided. The first and second recesses 19 and 20 on the left side surface of 8 (not shown in FIG. 16 but having a shape symmetrical to the first and second recesses 19 and 20 on the right side surface of the second body 8). Is provided on the left side surface of the first main body 7a, and the spherical floating body 9 is provided around the hole 35a. It was configured to move along.

As shown in FIG. 16, this damper device is composed of two first main bodies 7a and 7b and a second main body 8, and a passage 11 and a second main body 7a provided on the right side surface of the first main body 7a and the second main body 7a. The first and second recesses 19 and 20 (not shown in the figure) provided on the left side surface of the main body 8 form one set to form one damper mechanism. Then, the first and second recesses 19 and 20 provided on the right side surface of the second main body 8 and the passage 11 provided on the inner bottom surface of the cup-shaped first main body 7b (not shown in the drawing, The passage 11, the step 16 and the like provided on the right side surface are provided on the inner bottom surface of the first main body 7b) to form one set to form one damper mechanism. The main parts of these two damper mechanisms are bilaterally symmetrical. Then, the shafts 34a and 34b projecting on both sides of the center position of the second main body 8 are inserted into the holes 35a provided in the first main body 7a and the holes 35b provided in the first main body 7b, respectively, and The two main bodies 8 are loosely fitted inside the first main body 7b. In this state, the second main body 8 is rotatable with respect to the first main bodies 7a and 7b, and the first main bodies 7a and 7b are separated from each other by a fixing mechanism (not shown) at a certain interval. Be combined.

In this damper device, the first main bodies 7a and 7b are attached and fixed to the fixed side, and the second main body 8 is used by rotating with respect to the first main bodies 7a and 7b. Then, when the second main body 8 is viewed from the direction of the arrow of the central axis 33 shown in FIG. 16, when the second main body 8 is rotated counterclockwise, the same braking torque as in the first embodiment is exerted, and When the main body 8 is rotated in the clockwise direction, the braking torque does not work as in the first embodiment. It should be noted that this damper device is provided with a protrusion 12, first and second protrusions 13 and 14, a small protrusion 15, and a step 16 which are equivalent to those in the first embodiment, and these are the same as those in the first embodiment. Since the same operation is performed, the same reference numerals are used and the description of those operations is omitted.

However, in the first to sixth embodiments, two sets of passages 11 are provided in the first main bodies 7 and 28, and two sets of first recesses 19 and second recesses 20 and 24 are provided in the second main bodies 8 and 30. Although two sets of floating bodies 9 are provided for each passage 11, one or more than three sets of passages, first and second recesses, and a damper device having a floating body are provided. can do.

The material of the floating body 9 of the first and second embodiments is rubber, and the material of the first main body 28 of the third embodiment is rubber. The point is that the first main body and the second main body are used. Also, at least one of the floating members may be made of rubber so that the floating member can move between the first concave portion and the second concave portion. Although the material is rubber, any material having elastic properties such as rubber may be used, and for example, plastic, vinyl chloride, urethane or the like may be used. Further, in addition to utilizing the elastic properties of the material as a rubber-like elastic body, for example, a metal such as iron may be hollowed so as to have elasticity like rubber when pressed. At least one of the first body, the second body, and the floating body can be formed by the processing method.

In addition, in the second embodiment, the second recess 24 is formed to be long in the circumferential direction of the second main body 8, but the second recess 24 is not formed to be long in the circumferential direction of the second main body 8 and The first recess 19 may be formed to be long in the circumferential direction of the second body 8, or both the first recess 19 and the second recess 24 may be formed to be long in the circumferential direction.

Further, in the first to fifth embodiments, one floating body 9 is associated with each passage 11, but, for example, in the case where it is formed long in the axial direction in order to increase the braking torque of the damper device. A plurality of floating bodies 9 can be arranged in series with respect to each of the passages 11 (not necessarily limited to the case of being elongated in the axial direction). Of course, also in the sixth embodiment, a plurality of floating bodies 9 may be arranged in the radial direction.

When a plurality of floating bodies 9 are made to correspond to one set of first and second recesses, each floating body 9 can have a different diameter, and each floating body 9 has a different elastic force. You can also let it. Thereby, a desired braking torque can be obtained. Then, for example, in the third embodiment shown in FIG. 9, a separate floating member having a diameter smaller than the diameter of the floating member 9 and an elastic force larger than the elastic force of the floating member 9, and the length of this embodiment. 1/2 of the floating bodies 9 are arranged in series, and when the two floating bodies pass through the step portion 16, a braking torque of the two floating bodies is generated, and the two floating bodies are When the vehicle passes through the passage 11 in the section where the step portion 16 is not provided, the braking torque of the floating body 9 may be mainly generated. As a result, an extremely large braking torque can be obtained by comparing the braking torque when the two floating bodies pass through the step portion 16 with the braking torque when not passing through the step portion 16.

Further, although the floating body 9 of the first to fifth embodiments is a column, it may be a columnar body having an elliptical or polygonal cross section in the axial direction, or may be a sphere. .. Furthermore, a plurality of damper devices can be connected and used to generate a large braking force. That is, for example, the first main bodies 7 of the plurality of damper devices of the first embodiment are connected to each other and the second main bodies 8 are connected to each other. Furthermore, as shown in FIG. 10, in the first main body 7 of the first embodiment, two second bodies that are connected in series in a state of being offset from each other by 90 ° in the rotation direction about the shaft portion 5 are provided. The body 8 can be attached.

In the first embodiment, the structure for generating the braking torque that opposes the rotation of the second main body 8 (lid 21) is used. However, although not shown in the drawing, the second main body 8 moves in the linear direction. A damper device that generates a braking force that opposes the above can be provided. That is, the outer shape is flat and the first main body having the passage of the floating body on the surface, and the outer shape is flat and it can be moved in parallel with the first main body along the passage of the first main body. The first recess and the second recess communicating with the first recess are provided on the passage-side surface of the first main body along the direction of the passage, and the depth of the first recess in the direction away from the first main body is increased. Is formed deeper than the depth of the second recess in the same direction, and the first recess, the second recess and the surface of the passage are formed in a state of being in contact with the surface of the passage and the second body. And a floating body housed in the space, and at least one of the first main body, the second main body, and the floating body 9 is made of a material having an elastic property. The second main body is parallel to the first main body along the passage in the direction from the recess toward the second recess. The movable body moves into the first concave portion when moved by moving the second main body with respect to the first main body in a direction opposite to that direction, and the movable body moves into the second concave portion. It can be a dumper device.

Further, in each of the above embodiments, when the second main body rotates or moves relative to the first main body, the relative rotation or movement is smoothly performed without chattering. As described above, for example, fluorine, silicon oil, molybdenum disulfide, or the like may be applied to the region where the floating body comes into contact, such as the passage 11. Of course, any or all of the floating body, the first main body, and the second main body may be molded by kneading the above-mentioned fluorine or the like.

Furthermore, in each of the above-described embodiments, the contour of the cross section of the first recess and the second recess has a shape in which two arcs are connected, but other shapes can be used. The point is that the first and second recesses having different depths communicate with each other, and the movable body can move between the first and second recesses.

[0069]

[Effect of the device]

 According to the first to twelfth inventions, the braking force (braking torque) when the second main body is moved (rotated) relative to the first main body in the direction in which the floating body moves to the second recess. ) Is larger than the braking force (braking torque) when the second body is moved (rotated) in the direction in which the floating body moves to the first recess. Therefore, as shown in the first embodiment, by providing the damper device of the present invention on the hinge of the lid of the Western-style toilet bowl, when the lid is closed, the lid is loosened by the weight of the lid without touching the lid. It can be closed naturally, and when the lid is opened, it can be opened lightly by hand, and it does not require the provision of a single clutch as in the conventional damper device shown in Fig. 11. effective. Since the damper device does not use the oil 3 as in the conventional case, it is not necessary to seal the oil 3 and the dirt of the device due to the oil 3 can be eliminated.

According to the fourth and fifth inventions, for example, as shown in FIG. 1 of the first embodiment, when the lid of the toilet bowl is opened by 130 °, it is engaged with the floating member moving to the first recess. By providing the first convex portion at the position, there is an effect that it serves as a stopper that prevents the lid from opening further. Then, by providing the second convex portion at a position where the lid is closed, the second convex portion is provided at a position where it engages with the floating body moving to the second concave portion, so that the lid does not rotate further in the closing direction. This makes it possible to prevent the lid from colliding with the toilet body when the lid is closed.

According to the sixth invention, for example, as shown in FIG. 1 of the first embodiment, the floating body corresponding to the rotation range of the lid from the angle before the lid is completely closed to the lid is completely closed. By providing a step in the section through which the lid passes, it is possible to increase the braking torque when the lid passes through this rotation range, so that the lid of the toilet bowl can be set very slowly just before the lid is closed. The effect is that it can be closed at the specified speed. Then, by forming the stepped portion as the inclined portion as in the first embodiment, when the lid in the closed state is opened as shown in FIG. 5, the floating body moves in the direction away from the inclined portion (upward in FIG. 5). Therefore, there is an effect that the lid can be lifted with a small force.

According to the seventh invention, the floating member is in contact with the first convex portion with the lid open as in the embodiment, for example, so that the floating member does not move to the second convex portion side. As shown in Fig. 1, by providing a small protrusion in the passage, it is possible to prevent the lid in the opened state from rotating in the closing direction with a force of a certain value or less, and thus, the lid is opened at the 112 ° open position. The effect is that it can be stopped reliably. According to the eighth invention, by providing two or more floating bodies in which at least one of the two factors of size and hardness is different, the first main body and the second main body are provided with the two or more floating bodies. It is possible to freely select the force for pressing the floating body from both sides, which has the effect of obtaining a desired braking force (braking torque). Then, when the two or more floating bodies are made to pass through the inclined portion (step portion) shown in the embodiment, for example, as the pushing amount by which the floating body is pressed from both sides by the first main body and the second main body increases, As a result, the braking torque of the floating body can be increased at an accelerating rate, and this has the effect that the deceleration acceleration when the lid is closed can be increased slightly before the lid is closed.

According to the ninth invention, by providing a desired number of floating bodies, it is possible to obtain a braking force (braking torque) according to the number of floating bodies. According to the tenth invention, by forming at least one of the first recess and the second recess long along the passage, the first main body relative to the second main body where a braking force (braking torque) is generated is generated. There is an effect that the movable distance (rotation range) can be made longer by the length of the recess formed in addition to the length of the passage. According to an eleventh invention, by forming the floating body into a cylindrical shape, when the first body moves relatively to the second body along the direction of the passage (when it rotates), the floating body moves. The body can be rolled in the direction of its movement. That is, when the floating body moves, slippage can be reduced or completely eliminated, which can prolong the life of the first and second main bodies and the floating body. Further, there is an effect that the relative movement (rotation) of the first main body with respect to the second main body can be smoothly performed. The twelfth device has the same effect as the eleventh device.

[Brief description of drawings]

FIG. 1 is a sectional view of a damper device according to a first embodiment of the present invention when a lid is at a fully open position.

FIG. 2 is a cross-sectional view of the damper device when the lid is slightly rotated in the closing direction from the fully opened position in the first embodiment.

FIG. 3 is a cross-sectional view of the damper device when the lid is rotated in the closing direction to an open position of less than 90 ° in the first embodiment.

FIG. 4 is a cross-sectional view of the damper device when the lid is rotated in the closing direction up to the front of the closed position in the first embodiment.

FIG. 5 is a cross-sectional view of the damper device when the lid is rotated in the closing direction to the closed position in the first embodiment.

FIG. 6 is a cross-sectional view of the damper device when the lid is rotated in the opening direction from the closed position in the first embodiment.

FIG. 7 is an exploded perspective view of the damper device according to the first embodiment.

FIG. 8 is a sectional view of the damper device when the lid is at the fully open position according to the second embodiment of the present invention.

FIG. 9 is a sectional view of the damper device when the lid is at the fully open position according to the third embodiment of the present invention.

FIG. 10 is an exploded perspective view of a damper device according to another embodiment of the present invention.

FIG. 11 is a cross-sectional view of the damper device when the lid is rotated in the closing direction to the front of the closed position in the fourth embodiment of the present invention.

FIG. 12 is a cross-sectional view of the damper device according to the fourth embodiment with the lid in the fully closed position and the idler engaged with the step portion.

FIG. 13 is a cross-sectional view of the damper device according to the fourth embodiment in a state where the lid is in the fully closed position and the floating body is moved into the retracting recess.

FIG. 14 is an enlarged cross-sectional view of the damper device according to the fifth embodiment of the present invention in a state where the lid is at the fully closed position and the floating member is moved into the retracting recess.

FIG. 15 is an enlarged end view of a ridge according to the fifth embodiment.

FIG. 16 is an exploded perspective view of a damper device according to a sixth embodiment of the present invention.

FIG. 17 is a principle diagram of a conventional damper device.

[Explanation of symbols]

 7 1st main body 8 2nd main body 9 Floating body 11 Passage 13 1st convex part 14 2nd convex part 15 Small protrusion 16 Step part 19 1st recessed part 20 2nd recessed part 24 2nd recessed part 28 1st main body 30 2nd main body 31 Evacuation recess 32 ridge

Claims (12)

[Scope of utility model registration request] 1. A first body having a passage for the following floating body on the surface thereof, and a first concave portion on the surface which can be moved relative to the first body along the passage of the first body and the first concave portion. And a second recess communicating with the second main body, the depth of the first recess in the direction away from the first main body being deeper than the depth of the second recess in the same direction. When,
A first recess, a second recess and a floating body housed in a space formed by the surface of the passage in contact with the surface of the passage and the second main body; By forming at least one of the floating bodies from a material having an elastic property, the second main body is moved relative to the first main body in the direction from the first recess toward the second recess. At this time, the floating body moves into the first recess,
A damper device, wherein the floating member is configured to move into the second recess when the second main body is moved relative to the first main body in the opposite direction. 2. A first main body having a hollow portion inside and a passage for the following floating body formed on an inner side surface forming the hollow portion; and a first main body housed in the hollow portion and facing the first main body. The first concave portion and the second concave portion communicating with the first concave portion are provided on the outer surface along the rotation direction so as to be freely rotatable along the passage, and the first concave portion in the direction toward the center of the rotation. A second main body in which the depth of the recess is deeper than the depth of the second recess in the same direction, and the first recess, the second recess and the passage in contact with the surface of the passage and the second main body. And a floating member housed in a space formed by the surface of the first body, and at least one of the first main body, the second main body, and the floating body is formed of a material having an elastic property. , In the rotation direction from the second recess toward the first recess, the second
When the body was rotated relative to the first body, the floating body moved into the second recess, and the second body was rotated relative to the first body in the opposite direction. At this time, the damper device is configured such that the floating member moves into the first recess. 3. A first main body having a passage for the following floating body formed on the outer side surface, and a cavity portion for accommodating the first main body inside, and along the passage relative to the first main body. A first recess and a second recess communicating with the first recess are provided in the inner surface along the rotation direction so as to be rotatable, and the depth of the first recess in the direction away from the center of the rotation is the second. A second body formed deeper than the depth of the recess in the same direction, and in a space formed by the first recess, the second recess and the surface of the passage in a state of being in contact with the surface of the passage and the second body. And a floating body accommodated therein, and by forming at least one of the first main body, the second main body, and the floating body from a material having elastic properties, the second concave portion is moved toward the first concave portion side. The floating body when the second main body is rotated relative to the first main body in the rotating direction toward Is moved into the second recess, and the floating body is moved into the first recess when the second main body is rotated relative to the first main body in the opposite direction. Damper device. 4. The first and second main bodies are moved relative to the first main body in a direction from the first recess toward the second recess, the projections being provided in the passage at a predetermined distance from each other. At this time, the first convex portion that engages with the floating body moving to the first concave portion to stop the movement of the second main body in the above direction, and the second main body in the direction from the second concave portion toward the first concave portion side. A second convex portion that engages with the floating body moving in the second concave portion when moved relative to the first main body, and stops the movement of the second main body in the direction. The damper device according to claim 1, wherein the damper device is provided. 5. The second main body is relatively protruding with respect to the first main body in a rotational direction from the first concave portion to the second concave portion side, each protruding from the passage at a predetermined distance from each other. The first convex portion that engages with the floating body that is moving to the first concave portion when it is caused to stop the rotation of the second main body in the direction, and the first convex portion in the rotation direction from the second concave portion to the first concave portion side. A second convex portion that engages with the floating body moving in the second concave portion when the second main body is rotated relative to the first main body, and that stops the rotation of the second main body in the above direction; The damper device according to claim 2 or 3, wherein the damper device is provided. 6. A step portion projecting to the second main body side is provided along a predetermined section of the passage,
The damper device according to 2 or 3. 7. The damper device according to claim 1, 2 or 3, wherein a small protrusion protruding toward the second main body is provided in the passage. 8. The damper according to claim 1, 2 or 3, wherein the floating member is composed of two or more floating members differing in at least one of two factors of size and hardness. apparatus. 9. The damper device according to claim 1, wherein the floating body is composed of a plurality of floating bodies. 10. The damper device according to claim 1, wherein at least one of the first recess and the second recess is formed to be long along the passage. 11. The floating body has a cylindrical shape, and the center axis direction thereof is orthogonal to the direction of the passage and is provided in a direction along the surface of the passage. The damper device according to 2 or 3. 12. The damper device according to claim 1, 2 or 3, wherein the floating member has a spherical shape.