JPH08303510A - Damper for rotary connection part - Google Patents

Abstract

PURPOSE: To provide a desired impact absorbing ability in an extremely simple structure, cope with change of various loads, and improve operability. CONSTITUTION: A damper 1 for a rotary connection part is a shock absorbing device to be provided for a switching mechanism comprising a base material 2, a movable member 3, and the rotary connection part. The shock absorbing device is provided to the rotary connection part, and it is provided with a shock absorbing part 10 comprising a rotary casing 11 and a damper rotor 12 to be assembled in multi-concentrically at an interval of a proper gap tD, and viscoelastic material P filled in the gap tD, a one-way movable part 20 to regulate the shock absorbing direction of the shock absorbing device by a ratchet mechanism, and a free rotation mechanism 30 to delay an actuation start point of the one-way movable part 20, and allow free rotation of the movable member 3 within a range of a specified angle.

Description

Detailed Description of the Invention

[0001]

[Object of the invention]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shock absorbing damper for a pivotal connection portion which is provided for an opening / closing mechanism using a door, a lid or the like as a moving member and suppresses abrupt movement of the moving member. Is.

[0002]

BACKGROUND OF THE INVENTION Opening and closing mechanisms for furniture such as doors and windows and furniture,
As the opening / closing mechanism for various doors of Buddhist altars, safes, automobiles, etc., or for the opening / closing mechanism of Western style toilet bowl lids and toilet seats, and even the lid of a piano, most basically it rotates between the base material and the moving member. A structure is provided in which a connecting portion is provided, and the both are rotatably connected by this rotating connecting portion. And when these doors, lids, etc. have a large weight, or these doors, lids, etc. are inferior in strength due to material or structure,
When there is a risk of damage due to a sudden opening / closing operation, a shock absorbing braking device may be used for the purpose of suppressing a sudden movement of the moving member.

Most of such braking devices are provided so as to connect the base member and the moving member at a position that is slightly separated in the radial direction from the pivotal connection portion that serves as a pivotal fulcrum. , The existence of the braking system can be clearly confirmed from the outside, and this type of braking system is structurally
It was also related to the fact that it was relatively large, which was a factor that impaired the appearance of doors, lids, etc., which are moving members.

Most of the shock absorbing means in such a braking device uses a viscous fluid such as air, oil or grease, and a seal mechanism for preventing the outflow of the air or the viscous fluid is separately required. Or, as mentioned above, the braking device inevitably becomes large in structure,
The increase in weight has led to an increase in manufacturing costs. In addition, these air and viscous fluids are always the best shock absorbing means to be applied to the above-mentioned opening / closing mechanism, because they can always obtain a constant shock absorbing force regardless of the magnitude of load, rapid change of load, or direction of load. I couldn't say that.

On the other hand, when the load changes slowly (when the load resistance is applied slowly and gradually), it deforms extremely flexibly and when the load changes rapidly (when the load resistance is applied at once at once). In particular, bouncing putty is known as a material having a strong drag force and a property of maintaining its original shape.

However, this bouncing putty has a weak self-shape-retaining property and flows due to gravity even when there is no load, so that it is difficult to maintain a specific shape, its own weight is heavy, and it is relatively expensive. There are limited applications that have been used while having the above excellent characteristics,
For example, toys for children and research materials for measuring rheology,
Alternatively, Japanese Patent Application Laid-Open No. 4-117903 related to the applicant's application
It was used in very few fields, such as the issue "Stress buffering structure in shoes".

Therefore, the present applicant has already filed Japanese Patent Application No. 6-308.
No. 164 “Braking device”, focusing on the characteristics of the bouncing putty and applying the bouncing putty to the opening / closing mechanism, a desired shock absorbing force can be obtained with an extremely simple structure and We have developed an extremely useful braking system that can adapt to changes in load. However, some of the moving members are, for example, Western-style toilet bowl lids, toilet seats, piano lids, etc. that open lightly and quickly when the lid is opened, obtain a large shock absorbing power when the lid is closed, and then slowly close. In some cases, you may want to absorb power only in one direction.

In such a case, the above-mentioned Japanese Patent Application No. 6-30
As disclosed in Japanese Patent No. 8164, a one-way movable mechanism that regulates the impact absorption direction is additionally required. However, the one-way movable mechanism disclosed in Japanese Patent Application No. 6-308164 has a complicated structure and it is difficult to maintain the bouncing putty in a predetermined shape.
There was room for improvement when it was put to practical use. In addition, if only such a one-way moving mechanism is provided,
The moving member 3 at the open position O as shown in FIG.
Even when the movable member 3 is rotated to the natural descent position A due to its own weight as shown in FIG. 5 (b), the shock absorbing force of the bouncing putty acts to make the operation heavy, and there is room for improvement in terms of usability. It was left.

[0009]

[Technical Items Attempted to Develop] The present invention has been devised on the basis of the recognition of such a background. In addition to improving the structure of the one-way movable mechanism, the present invention is easy to use. By installing a new mechanism that solves the above problem, a new shock absorber with a very simple structure that can obtain the desired shock absorption power and can cope with various load changes, and is also easy to use Is an attempt to develop.

[0010]

Configuration of the Invention

[Means for Achieving the Object] That is, a damper for a rotary connecting portion according to claim 1 is a shock absorbing device provided for an opening / closing mechanism comprising a substrate, a moving member and a rotary connecting portion. The shock absorbing device is provided for the rotary connecting portion, and comprises a rotary casing and a damper rotor which are combined in a multiple concentric manner with a proper gap, and a viscoelastic material filled in the gap. A shock absorbing part, a one-way movable part that regulates the shock absorbing direction of the shock absorbing device by a ratchet mechanism, and an operation start point of this one-way movable part is delayed so that the moving member can freely rotate within a certain angle range. And a free rotation mechanism that allows

In addition to the above requirements, in the damper for the pivotal connecting portion according to the second aspect, the pivotal centers of the shock absorbing portion, the one-way movable portion, and the free pivoting mechanism pass on the same axis. It is characterized by being arranged in series.

Further, in addition to the above-mentioned requirements, the damper for rotary connection part according to a third aspect of the present invention has a sliding friction sleeve formed by forming a sliding friction surface on the inside of the one-way movable part, and the inside of the sliding friction sleeve. A ratchet rotor which is provided with a plurality of locking claws on its peripheral surface, and is provided in the gap between the sliding friction sleeve and the ratchet rotor, and the sliding friction sleeve is provided by changing the contact position with the locking claw. It is characterized by comprising a rolling roller for switching connection / disconnection with the ratchet rotor.

Further, in addition to the above requirements, in the damper for a rotary connection part according to a fourth aspect, the free rotation mechanism is a shaft head of a rotary shaft provided for the damper rotor or the ratchet rotor, and It is configured by a fitting hole portion that is loosely fitted to the shaft head portion and is fixed to the moving member, of which the fitting hole portion has a fixed angle of the shaft head portion. It is characterized in that a free rotation space is formed to allow rotation in a range.

Further, in addition to the above requirements, the pivotal connection portion damper according to a fifth aspect of the present invention is characterized in that the viscoelastic material is formed of a bouncing putty. Then, the object of the invention is to be achieved by using the constitution of the invention described in each of these claims.

[0015]

That is, the rotary connecting part damper according to the first aspect of the present invention is provided for the rotary connecting part, and comprises a shock absorbing part, a one-way movable part, and a free rotating mechanism. There is. This makes it possible to give directionality to the shock absorbing force of the shock absorbing unit without damaging the appearance of the opening / closing mechanism. Further, by providing the free rotation mechanism, it is possible to delay the operation start point of the one-way movable section, and it becomes easy to move the moving member from the open position to the position where it can naturally descend.

A damper for a pivotal connecting portion according to a second aspect of the present invention has a structure in which a shock absorbing portion, a one-way movable portion, and a free pivoting mechanism are arranged in series. As a result, the shock absorbing force is smoothly transmitted in the shock absorbing portion and contributes to downsizing.

Furthermore, the damper for rotary connection part according to the third aspect of the present invention comprises the one-way movable part including a sliding friction sleeve, a ratchet rotor, and a rolling roller.
This mainly contributes to downsizing of the one-way movable portion in the axial direction, and can provide a ratchet mechanism having a simple structure and a reliable attachment / detachment operation.

Further, in the damper for rotary connection part according to the fourth aspect, the free rotation mechanism is constituted by the shaft head part of the rotation shaft and the fitting hole part in which the free rotation space is formed. . As a result, when the fitting hole is rotated together with the moving member, the power is not transmitted to the rotation shaft during the range where the free rotation space is formed, and the side wall of the fitting hole is the shaft of the rotation shaft. The power is transmitted to the rotary shaft only when it comes into contact with the head. Therefore, it becomes possible to delay the operation start point of the one-way movable portion with an extremely simple structure, which also contributes to downsizing of the free rotation mechanism.

Furthermore, the damper for the pivotal connecting portion according to claim 5 has a structure in which the viscoelastic material is formed by a bouncing putty. As a result, in addition to the action provided by the one-way movable part and the free rotation mechanism, a low shock absorption force is obtained when the moving member is slowly moved, and a high shock absorption force is obtained when the moving member is rapidly opened and closed. The unique action of bouncing putty is added.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A damper for a rotary connecting portion of the present invention will be specifically described below with reference to the drawings. The damper for the pivotal connecting portion of the present invention is for braking when closing a toilet seat or lid of a Western-style flush toilet,
Braking of doors, doors and other fittings, braking of sashes and window frames not included in these fittings categories (for example, dampers for horizontal sliding windows in smoke exhaust systems of buildings), and lids of pianos and furniture. It is widely used as a substitute for dampers, shock absorbers, cylinders, etc. that are attached to braking and other various rotating parts and rotating parts.

In the figure, reference numeral 1 denotes a rotary connection damper of the present invention, which comprises an opening / closing mechanism including a base material 2, a moving member 3 and a rotary connection portion 4. It is provided for 5. In FIG. 1, the base 2 includes a Western-style toilet bowl, the moving member 3 includes a toilet seat, the rotary connecting portion 4 includes a connecting hinge for rotatably connecting the two, and the opening / closing mechanism 5 includes these. An example applied to a connecting hinge in such a flush toilet will be described by taking a Western flush toilet constructed as an example.

The rotary connecting part damper 1 of the present invention comprises a shock absorbing part 10, a one-way movable part 20, and a free rotating mechanism 3.
At least 0, of which the shock absorbing portion 10
It basically comprises a rotating casing 11 and a damper rotor 12 that are combined in a multiple concentric manner with an appropriate gap t _D , and a viscoelastic material P filled in the gap t _D.
First, the viscoelastic material P that actually performs the shock absorbing action will be described. As the viscoelastic material P, various materials such as putty-like, unvulcanized rubber-like, or viscous material can be applied as long as it exhibits a desired shock absorbing action, and an example will be described below. Bouncing putty can be applied.

The bouncing putty (bounc)
ing putty) is a general term for deformable putty-like substances that deform very flexibly under a slow load change, but show a strong resistance to a sudden load change and have high elasticity or rigidity. The term includes, for example, those disclosed in US Pat. No. 2,541,851.

The structure of this product is composed of a network of silicone having hydrophobic methyl groups and the like, most of which are crosslinked, and a system composed of a viscous liquid reactive product of a boron mixture and methylsilicone. It has a two-layer structure. The hydrophilic reaction product then forms a layer in the interstices of the crosslinked silicone. It is also considered that the unique property of this product is that the hydrophilic and hydrophobic groups are in an equilibrium state, and in addition, the friction between these two groups is large.

That is, when this substance is dropped onto, for example, a relatively hard surface, a large frictional force between the hydrophilic group and the hydrophobic group is exerted, and as a result, each molecule does not slip, so that the elastic force is exerted. It exhibits a solid-like property with properties, and exhibits a kind of rigidity close to a kind under a sharp impact such as hitting with a hammer. On the other hand, when the pressure is gradually applied, the boron component can flow out between the meshes of the network by overcoming the frictional force, so that the boron component is extremely flexibly deformed.

An example of the components of bouncing putty is as follows. Boron-containing siloxane 50 to 80% Pigment + Silicon dioxide 10 to 30% Diorganopolysiloxane 0 to 15% Higher fatty acid and other 1% Also, bouncing putty is obtained by treating organopolysiloxane with a mixture of boron and heat. It is continuously obtained by appropriately providing either one or both of the catalysts. Where the mixture of boron is pyroboric acid,
Specific boron mixtures can be selected depending on the properties desired for the product, including boric anhydride, boric acid, ethyl borate, other borate esters, and the like.

An example of a bouncing putty manufacturing method will be described below. The organopolysiloxane used in the manufacturing process is
It is an oily methyl siloxane, which is obtained by hydrolysis of almost pure dimethyl silicone halogen compound, and its structure is represented by (CH ₃ ) ₃ SiO _0.5 at the ends and (CH ₃ ) ₂ SiO at the middle part. It is what is done.

First, 75 parts of dimethyl silicone oil (representing parts by weight; the same applies hereinafter) and 10 parts of pyroboric acid are mixed, and this mixture is heated in an oven at 150 ° C. for 2 hours. At the end of the heating the mixture becomes a somewhat elastic gel. To 45 parts of this gel, 90 parts of lithopone (white pigment) and 0.9 parts of benzoyl peroxide are mixed until they become a solid, and further 45
Dimethyl silicone oil and 0.9 parts of benzoyl peroxide are added to further solidify.

The solidified product is heated in an oven at 100 ° C to 150 ° C for 2 hours. By kneading the finished product with the fingers of the hand, it becomes putty and has high adhesiveness and resilience. It should be noted that the use of a hydrolyzable alkyl borate or the same amount of catalyst is convenient for dispersing the boron mixture in methyl silicone oil.

By changing the amount of the boron mixture, the amount of the catalyst, the heating time, etc., the component ratio of hydrophilicity and hydrophobicity changes, and as a result, the elasticity of the bouncing putty as a shock absorbing means is improved. Be flexible and controllable. The elasticity and flexibility can also be adjusted by adding a hydrophilic or hydrophobic substance such as glycerin or oleic acid.

Such a bouncing putty can of course be used by itself, but it is also possible to add a so-called filler as described below to such a bouncing putty P. As such a filler, if it has an appropriate bulk and can be integrated with the bouncing putty (dispersed in the bouncing putty and does not separate), it may have a suitable shape such as a flake shape without being solid or elastic. Well, elastic micro hollow spheres and fumed silica as described below can be exemplified. Next, the elastic micro hollow sphere will be described. The elastic micro hollow spheres referred to here are powders represented by, for example, Expancel (registered trademark) developed by Expancel, Sweden, and Matsumoto Microspheres (registered trademark) manufactured by Matsumoto Yushi-Seiyaku Co., Ltd. is there. Expancel is 198
It is an organic micro hollow sphere made of a vinylidene chloride-acrylonitrile copolymer produced since 0 years as a shell, and isobutane as an expansive material.

There are unexpanded (unfoamed) and expanded (expanded) expansels. The expanded particles have an average particle size of 40 μm and a particle size range of 10 to 100 μm.
m is larger than that of unexpanded particles having an average particle size of 10 μm and a particle size range of 5 to 30 μm, and expanded particles have excellent buffering properties.

In the Expancel, the shell wall is 0.1 μm.
Since it is elastic to some extent, it is compressed when a load is applied,
Since it has the property of returning to the original when the load is stopped,
When this is mixed with bouncing putty, impact resistance and cushioning property are enhanced. Since Expancel is a sphere, it has a much better stress distribution than other fillers.

Matsumoto microspheres are roughly classified into those containing a low boiling point hydrocarbon with a vinylidene chloride copolymer as a shell wall and those containing a low boiling point hydrocarbon with a shell wall containing no vinylidene chloride. Among them, the expanded (foamed) F-80 having a particle size range of 20 to 80 μm
ED is preferred.

Although these elastic micro hollow spheres depend on the adjustment of the bouncing putty, 1 to 10 parts of the bouncing putty is usually added and mixed with respect to 100 (weight) parts. A kneading machine or the like is used to mix the elastic micro hollow spheres into the bouncing putty. By the way, as described above, the bouncing putty has a weak self-shape retention property as it is, and it will flow if left unattended, but by incorporating elastic micro hollow spheres into it, it will have a self-shape retention property. Become. Further, the bouncing putty itself has a relatively large specific gravity, but by incorporating elastic micro hollow spheres having a small specific gravity, the overall weight can be set small.

As the viscoelastic material P, in addition to the above bouncing putty, materials such as silicone bouncing putty, silicone rubber, unvulcanized rubber (rubber compound), and adhesive can be applied. Among them, the silicone bouncing putty is X-30-1016- from Shin-Etsu Chemical Co., Ltd.
22, KE-SA-P, Toray as silicone rubber
SH831 from Dow Corning Silicone Co., Ltd., and unvulcanized rubber (rubber compound) KE-5540, KE-574-U, KE-9 from Shin-Etsu Chemical Co., Ltd.
31-U, KE-520-U, FR-601 of Nisshin Chemical Industry Co., Ltd., Toray Dow Corning
Torefarm manufactured by Silicone Co., Ltd. can be used as an example.

Next, the rotating casing 11 and the damper rotor 12 which are other components of the shock absorbing portion 10 including the viscoelastic material P will be described. Rotating casing 1
As shown in FIGS. 2 and 3, a cylindrical damper rotor 1 has a cylindrical shape as an example, and the rotating casing 11 has a circumferential surface slightly recessed as shown in FIGS. 12 is internally fitted. The concave portion formed on the peripheral surface of the damper rotor 12 is provided for the purpose of ensuring a filling space for the viscoelastic material P. Therefore, the concave portion is not provided on the damper rotor 12 side,
It may be provided on the rotating casing 11 side, or may be provided on both the damper rotor 12 and the rotating casing 11. An output shaft 14 passing through the same center of rotation as the damper rotor 12 is provided in a projecting state on one end surface of the damper rotor 12, and the end portion thereof serves as a connecting portion with the base material 2 side. Shaft head 15
Is provided.

As the material of the rotary casing 11 and the damper rotor 12, metals such as brass, stainless steel, aluminum, or various industrial plastics having high mechanical strength, other synthetic resins, synthetic rubbers, etc. can be adopted. Furthermore, when the airtightness of the connecting portion between the rotating casing 11 and the damper rotor 12 is insufficient and the viscoelastic material P to be filled may flow out, a simple sealing mechanism such as an O-ring is attached. Is also possible.

Further, the viscoelastic material P is filled in the gap t _D formed between the rotary casing 11 and the damper rotor 12 which is the installation site thereof, and is firmly adhered thereto. The "strong adhesion" described here means an adhesion strengthening means as described below, and as an example thereof, a chemical adhesion strengthening means such as a primer or an adhesive can be adopted. In addition, this adhesion strengthening means prevents the viscoelastic material P from rotating against the rotating casing 11 and the damper rotor 12 without any restriction, so that the original action cannot be exerted. It is a means taken. For this purpose, for example, the above-mentioned chemical adhesion strengthening means is adopted. For example, metal and silicone (bouncing putty), hard resin such as polycarbonate and silicone (bouncing putty) are used depending on the material of the rotary casing 11 or the damper rotor 12. It is desirable to fill the viscoelastic material P after applying a primer and an adhesive suitable for joining the above. Specifically, Toray Dow Corning Silicone Co., Ltd.'s Primers A to D and the above-mentioned Trepharm, which is an adhesive, FC of Toshiba Silicone Co., Ltd.
10α, β, or KE-1820 which is a one-component heat-curable silicone adhesive of Shin-Etsu Chemical Co., Ltd. can be used.

In addition to the above-mentioned chemical adhesion strengthening means, it is also possible to jointly use the mechanical adhesion strengthening means described below. Specifically, mechanical adhesion strengthening means such as forming rough surface roughness between the rotating casing 11 and the damper rotor 12 or providing grooves and creases in the axial direction to form irregularities in the installation site of the viscoelastic material P is available. Can be adopted. Incidentally, when grooves or folds are formed in the axial direction, the viscoelastic material P enters the grooves or folds, and this serves as resistance when the rotating casing 11 and the damper rotor 12 rotate, and the viscoelastic material P is formed. This effectively prevents the slip. That is, it acts to complement the chemical adhesion strengthening means.

Next, the one-way movable section 20 will be described. The one-way movable portion 20 plays a role of restricting the impact absorbing direction of the rotary connecting portion damper 1 of the present invention, and the present invention adopts a ratchet mechanism as an example.
Specifically, a rubbing sleeve 21 having a rubbing surface 21a formed therein, a ratchet rotor 22 provided in the rubbing sleeve 21 and having a plurality of locking claws 22a formed on the peripheral surface thereof, These rubbing sleeve 21 and ratchet rotor 2
2 and a rolling roller 23 provided in a gap t _R between the sliding claw 22a and the ratchet rotor 22 for switching the sliding contact between the sliding friction sleeve 21 and the ratchet rotor 22 according to the change of the contact position with the locking claw 22a. ing.

In the embodiment shown in FIGS. 2 and 3,
The input side end surface of the rotary casing 11 of the shock absorbing portion 10 is projected in the axial direction,
The rubbing sleeve 21 is formed so as to be the same center of rotation as. An input shaft 24 is provided at the center of rotation of the ratchet rotor 22.
A shaft head portion 31, which is also a part of a free-rotating mechanism 30 described later, is formed at the input-side end portion of 4. In the present specification, the term "rotating shaft" is used unless the input shaft 24 and the output shaft 14 are used separately.

Next, the free rotation mechanism 30 will be described.
The free rotation mechanism 30 delays the operation start point of the one-way movable part 20 and allows the free rotation of the moving member 3 within a certain angle range. Specifically, the shaft heads 15 and 31 of the rotary shafts 14 and 24 provided for the damper rotor 12 or the ratchet rotor 22, and
The shaft heads 15 and 31 are loosely fitted and are fitted to the moving member 3 in a fixed hole 32.

In the fitting hole 32, the shaft head 15,
Free rotation space S that allows rotation of 31 within a certain angle range
The size of the free rotation space S is appropriately adjusted according to the difference in the lid opening position O of the moving member 3 and the like.
Incidentally, in the present embodiment shown in FIGS. 1 to 3, since the Western style flush toilet is adopted as the opening / closing mechanism 5, the shaft head 15,
The size of the free rotation space S is set so that the free rotation angle of 31 is about 20 °.

In the embodiment shown in FIGS. 1 to 3, the shock absorbing portion 10 and the one-way movable portion 20 are included.
And the free rotation mechanism 30 are arranged in series so that the respective rotation centers pass on the same axis, and the free rotation mechanism 30, the one-way movable portion 20, and the shock absorbing portion 10 are arranged in this order from the input side. It is configured to be placed in. Further, in the present embodiment shown in FIGS.
Caps 6 are provided at both ends of the shock absorber 1 and the one-way movable part 2 by the caps 6.
It is configured such that 0 and 0 are built in the same housing to form one unit. The arrangement of the free rotation mechanism 30, the one-way movable portion 20, and the shock absorbing portion 10 is not limited to the above arrangement, and for example, the free rotation mechanism 3 from the input side.
It is also possible to arrange 0, the shock absorbing section 10, and the one-way movable section 20 in this order. Incidentally, in the case of such an arrangement, further operational stability can be expected in the pivotal connection part damper 1 in the use state shown in FIG.

The thus constructed damper 1 for the rotary connecting portion of the present invention is used as the rotary connecting portion 4 or as a part of the rotary connecting portion 4, and, by the way, FIGS. In the present embodiment shown in FIG. 6 (a), an embodiment used as the rotary connecting portion 4 is shown, and in FIG. 6 (b), a further example is shown for such a rotary connecting portion damper 1. As an example, the rotary connecting portion 4 is constructed by providing the blade-shaped mounting bracket 8. Next, another embodiment in which the installation mode or the partial configuration is changed will be described.

[0047]

[Other Embodiments] First, FIG. 4 shows an embodiment in which the installation mode of the damper 1 for the rotary connection part of the present invention is devised so that it can be applied to the rotation of both the lid 3a and the toilet seat 3b of a Western-style flush toilet. Here is an example. That is, two types of rotary connection dampers 1 are used, a rotary connection damper 1 for rotating the lid 3a and a rotary connection damper 1 for rotating the toilet seat 3b. It is arranged so as to be distributed to both left and right ends of the portion 4, and power is transmitted separately from the lid 3a or the toilet seat 3b to the input shaft 24 of each of the rotary connection dampers 1.

That is, a power transmission mechanism 40 for transmitting the rotation of the lid 3a or the toilet seat 3b to the input shafts 24 of the respective dampers 1 for the rotary connecting portions is provided at the central portion in the axial direction of the rotary connecting portions 4. There is. The power transmission mechanism 40 includes a power transmission rod 41 having a fitting hole portion 32 at one end (the left end in the illustrated embodiment), and two power transmission rods externally fitted to the power transmission rod 41. Power transmission sleeve 42
And consists of. There are two power transmission sleeves 42.
Of these, a fitting hole 32 is provided at one (right side in the illustrated embodiment) end portion, and the power transmission rod 41 is provided with a lid 3a. Toilet seats 3b are connected to the power transmission sleeves 42, respectively.

Further, FIG. 5 shows a pivotal connecting portion 4 suitable for holding a moving member 3 having a relatively large weight, which includes a mounting bracket 8 and shaft head portions 15, 31.
The mechanical strength is increased by improving the configuration of
The deformation in the bending direction is suppressed. That is, the rotation-side mounting bracket 8a having a U-shaped cross section and the cross section L
The two mounting brackets 8b on the fixed side constitute a mounting bracket 8, of which the mounting bracket 8a on the rotating side is provided.
Is provided with a fitting hole 32 and a fitting hole 33 so as to pass on the same rotation axis, and there are two fixed side mounting brackets 8.
A fitting hole 33 is formed in one of the two sides b, and an engagement hole portion 34 is formed in the other fixed side mounting bracket 8b.

The shaft head portion 15 and the shaft head portion 31 as described below are fitted into the fitting hole portion 32, the fitting hole 33 and the engaging hole portion 34 of the mounting bracket 8 as described above. That is, on the base side of the shaft head portion 15, the engaging portion 3 that engages with the engaging hole portion 34 in the fixed side mounting bracket 8b.
4a, and the rotation side mounting bracket 8 on the end side.
A fitting shaft 33a that is rotatably fitted into the fitting hole 33 in a is provided. On the other hand, on the base side of the shaft head portion 31, a fitting portion 32 that rotates within a predetermined angle with respect to the fitting hole portion 32 formed in the rotation side mounting bracket 8a.
a is provided, and the fixed side mounting bracket 8 is provided on the end side.
A fitting shaft 33a is provided which is rotatably fitted in the fitting hole 33 formed in b. Then, by combining these various members, it becomes possible to form the rotary connecting part damper 1 of the present invention as a rotary connecting part 4 capable of supporting two points in a two-sided holding state.

In addition to the above, in the embodiment shown in FIGS. 1 to 3, the shock absorbing portion 10 and the one-way movable portion 20 are integrated, but as shown in FIG. It is also possible to form the one-way movable part 20 separately and to connect them in series during the assembly process so as to be housed in the outer casing 7. By the way, when such a structure is adopted, the shock absorbing portion 1 having different characteristics and structures is used.
0 and one-way movable part 20 are prepared in advance, and these are appropriately combined and used according to the usage situation, etc., or when some of them are damaged, only the damaged member is replaced and used. It becomes possible to do.

In FIG. 8, the cross-sectional shape of the damper rotor 12 is changed so that the viscoelastic material P is not deformed only in the shearing direction but is deformed in the compression or tension direction. Is. That is, a plurality of blade-shaped pressing pieces 12a is formed on the outer periphery of the damper rotor 12, and four pressing pieces are shown in FIG. 8A, three pressing pieces are shown in FIG. 8B, and two pressing pieces are shown in FIG. 8C. Each of the formed pieces 12a is shown. Of course, the shape is not limited to such a blade shape, and an appropriate shape such as a semicircular shape or an elliptical shape can be adopted.

Further, FIG. 9 shows a rotary casing 1
1 is an example in which the impact absorption action area of the viscoelastic material P is increased by changing the vertical cross-sectional shapes of the damper rotor 12 and the damper rotor 12. Of these, FIG. 9 (a) shows an embodiment in which the impact absorbing action area in the axial direction is increased, and FIG. 9 (b) shows the impact absorbing action area in the radial direction. It shows an embodiment intended to increase.

Furthermore, FIG. 10 shows two examples in which the structure of the one-way movable part 20 is different. Of these, FIG. 10 (a) shows the embodiment shown in FIGS. An example in which the relationship between the rubbing sleeve 21 and the ratchet rotor 22 in the example is reversed is shown. That is, FIG.
The one-way movable part 20 shown in 0 (a) has a ratchet ring 25 formed by forming a plurality of locking claws 25a on the inner peripheral surface,
Provided in the ratchet ring 25, constituted by a rubbing rotor 26 to its peripheral surface and sliding Kosumen 26a, the rolling rollers 23 provided in a gap t _R of both.
On the other hand, the ratchet rotor 22 is shown in FIG.
Is divided into two in the axial direction, a plurality of engaging claws 27 are formed on each of the divided surfaces, and a compression coil spring which is an example of the biasing means 28 is contracted to one of the divided ratchet rotors 22. is there.

Further, FIG. 11 shows various embodiments in which the structure of the free rotation mechanism 30 is different. Of these, the one shown in FIG. The distance t _R between the ratchet rotor 22 and the ratchet rotor 22 is made relatively large to increase the moving distance L of the rolling roller 23, and the delay of the ratchet operation starting point caused by this is used as the free rotation mechanism 30. It is the one. In this case, of course, a separate holding mechanism is required to prevent the rolling roller 23 from falling downward. Further, FIG. 11B shows an embodiment in which the free rotation mechanism 30 is applied between the ratchet rotor 22 and the input shaft 24.

Further, FIGS. 11 (c) and 11 (d) show a free rotation mechanism 30 having a structure in which the free rotation angle is adjustable. Of these, the one shown in FIG. 11 (c) is an embodiment in which the freely rotatable angle can be adjusted stepwise by using the detachable locking piece 35, and the one shown in FIG. 11 (d). In the configuration of the fitting hole portion 32, the free rotation angle can be changed steplessly by arranging the fixed sleeve 36 inside and the movable sleeve 37 outside.

In addition, the application part of the damper 1 for the pivotal connection part of the present invention is not limited to the connection hinge for directly connecting the base member 2 and the moving member 3, and other parts of the opening / closing mechanism 5 can be used. When the dynamic connecting portion 4 is present, it is naturally applicable to the rotary connecting portion 4. Specifically, in the opening / closing mechanism 5 including the support rod 50, the slider 51, and the slide guide 52 as shown in FIG.
Of the present invention with respect to the rotational connecting portion 4 (indicated by J ₁ in the figure) between the supporting rod 50 and the bearing rod 50 or the rotational connecting portion 4 (indicated by J ₂ in the figure) between the supporting rod 50 and the slider 51. It is also possible to apply the damper 1 for a connection part.

Next, the procedure for opening and closing the case of using the lid or toilet seat of the Western style flush toilet as the moving member 3 and the case of using the smoke exit window as the moving member 3 will be described with reference to FIG. It will be described together with the operation state of No. 1. (I) When the lid or toilet seat of the flush toilet is used as the moving member (see FIGS. 13A and 13B), in this case, the moving member 3 is initially positioned horizontally (this state is referred to as the closed position B). From this state to the boundary point B ′.
Works and rotates with almost no load. From the boundary point B ′ to the lid-opening position O, the one-way movable part 20 acts, but the rolling roller 23 is in the idling state in which it is not locked, and during this period, it rotates with almost no load.

Next, when the moving member 3 is closed, from the open position O to the naturally descendable position A, the free rotation mechanism 30 works to rotate with almost no load, and further natural descending is possible. From the position A to the closed position B, the one-way movable part 20 operates in a locked state, so that the power thereof is transmitted to the shock absorbing part 10 in the subsequent stage. As a result, the moving member 3 gradually descends while receiving the shock absorbing action of the viscoelastic material P, reaches the closed position B, and enters the closed state.

(Ii) When the smoke exhaust window is used as the moving member (see FIGS. 14 (a) and 14 (b)) In this case, the moving member 3 is initially positioned vertically (in this state, the lid is closed). Since the free rotation mechanism 30 is operating from this state to the position A where natural lowering is possible, the power is not transmitted to the one-way movable mechanism 20. However, since the smoke exhaust window is generally required to be airtight, the closed state of the window is relatively strong, and the moving member 3 can be moved to the position A where it can naturally descend unless a certain pressing force is applied. I can't let you do it. Therefore, when opening the moving member 3, an appropriate pressing force is applied by hand or by using an appropriate pressing means (for example, an air cylinder, a spring, an electromagnetic solenoid, a cam lever using the lever principle, etc.) provided separately. However, it is necessary to open the lid.

When the moving member 3 reaches the position A where it can descend naturally, the one-way movable part 20 is activated. In the case of this embodiment, the one-way movable portion 20 is set so as to be in the locked state in the opening direction, which is the reverse of the embodiment shown in FIG. Therefore, the power generated by the rotation of the moving member 3 is transmitted to the shock absorbing portion 10,
The moving member 3 gradually moves down to the open position O while receiving the shock absorbing action of the viscoelastic material P.

Next, when the moving member 3 is closed, the free rotation mechanism 30 works from the opening position O to the boundary point B ', and it rotates with almost no load. Since the one-way movable part 20 is set to operate in the idling state even from the boundary point B ′ to the closed position B, the moving member 3 is closed and the moving member 3 is closed during this period. .

In addition to the above, the damper 1 for the rotary connecting portion of the present invention
Can also be applied to a horizontally opening type door that rotates horizontally. In this case, the one-way movable part 20 is set to be in a locked state in the closing direction, or two types of dampers 1 for the pivotal connecting part having different operating directions and operating drags are used to expand the opening and the closing direction. It is also possible to set so that a shock absorbing force suitable for each of the two directions is applied. Further, the rotary connection damper 1 of the present invention can be applied to a sliding type window frame (sash) or door. In this case, the sliding moving member 3
When the rotary connecting part damper 1 of the present invention is arranged at the closed end and the open end of the moving member 3 and the moving member 3 approaches the closed end or the open end, a part of the end surface of the moving member 3 is turned. Abutting against a contact piece connected to the input shaft 24 of the damper 1 for
The rotation connecting part damper 1 is set to operate by rotating the contact piece.

[0064]

The damper 1 for the pivotal connecting portion of the present invention has the above-described structure, and the following effects are exhibited by having such a structure. That is, the rotary connecting part damper 1 according to claim 1 is provided to the rotary connecting part 4 and includes the shock absorbing part 10, the one-way movable part 20, and the free rotating mechanism 30. There is. As a result, the shock absorbing portion 10 does not impair the external appearance of the opening / closing mechanism 5, and the shock absorbing force in the shock absorbing portion 10 can be made directional. Further, since the free rotation mechanism 30 is provided, it is possible to delay the operation start point of the one-way movable portion 20, and it becomes easy to move the moving member 3 from the lid opening position O to the natural descent position A.

Further, the damper 1 for the pivotal connecting portion according to claim 2
Has a configuration in which the shock absorbing portion 10, the one-way movable portion 20, and the free rotation mechanism 30 are arranged in series. As a result, the shock absorbing force in the shock absorbing portion 10 is smoothly transmitted and also contributes to downsizing.

Further, the damper 1 for the pivotal connecting portion according to claim 3
The one-way movable part 20 is configured by including a sliding sleeve 21, a ratchet rotor 22, and a rolling roller 23. This mainly contributes to downsizing of the one-way movable portion 20 in the axial direction, and can provide a ratchet mechanism having a simple structure and a reliable attachment / detachment operation.

Furthermore, in the damper 1 for the pivotal connecting portion according to the fourth aspect, the free pivoting mechanism 30 is fitted with the shaft heads 15 and 31 of the pivoting shafts 14 and 24 and the free pivoting space S. Dowel part 3
It is composed of 2 and. As a result, when the fitting hole portion 32 rotates together with the moving member 3, the power is not transmitted to the rotation shafts 14 and 24 during the range in which the free rotation space S is formed, and the fitting hole portion 32 moves. Only when the side walls come into contact with the shaft head portions 15, 31 of the rotating shafts 14, 24 are the rotating shafts 14, 24 turned.
Power is transmitted to. Therefore, it becomes possible to delay the operation start point of the one-way movable part 20 with an extremely simple structure, which also contributes to downsizing of the free rotation mechanism 30.

Furthermore, the rotary connecting part damper 1 according to a fifth aspect of the present invention has a structure in which the viscoelastic material P is formed by a bouncing putty. As a result, the one-way movable part 2
In addition to the action provided by the 0 and the free rotation mechanism 30, the shock absorbing force is low when the moving member 3 is slowly moved, and the high shock absorbing force is obtained when the moving member 3 is rapidly opened and closed. The action peculiar to bouncing putty is added. And since the effects brought about by the configurations of the respective claims act synergistically,
It is possible to further improve the usability of the moving member 3, to obtain a desired shock absorbing force with an extremely simple structure, and to provide the pivotal connection portion damper 1 that can cope with various changes in load.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment in which a rotary connecting part damper of the present invention is applied to a rotary connecting part of a Western-style flush toilet.

FIG. 2 is an exploded perspective view showing an example of a rotary connecting part damper of the present invention.

FIG. 3 is a vertical sectional front view of the same as above and a transverse side view showing a state of being cut along line bb, cc and dd in FIG.

FIG. 4 is a vertical sectional front view showing another embodiment in which the installation mode is different from the above.

FIG. 5 is an exploded perspective view showing a rotary connection portion having increased mechanical strength.

6A and 6B are a front view and a plan view showing two types of embodiments in which the mode of use of the rotary connecting part damper of the present invention is different.

FIG. 7 is a skeletal vertical sectional front view showing an embodiment in which a shock absorbing portion and a one-way movable portion are separately configured.

FIG. 8 is a vertical cross-sectional side view showing three examples in which the cross-sectional shape of the damper rotor is changed.

FIG. 9 is a vertical cross-sectional front view showing two examples in which the impact absorbing action area is increased.

FIG. 10 is a cross-sectional side view and a front view showing two examples in which the configuration of the one-way movable portion is different.

FIG. 11 is a cross-sectional side view showing various embodiments in which the configuration of the free rotation mechanism is different.

FIG. 12 is a side view showing an opening / closing mechanism having a plurality of rotation connecting portions.

FIG. 13 is an operation principle diagram skeletally showing the movement trajectory of the moving member when the lid or toilet seat of the flush toilet is used as the moving member.

FIG. 14 is an operation principle diagram skeletally showing the movement trajectory of the moving member when the smoke exhaust window is used as the moving member.

FIG. 15 is a skeletal operating principle diagram showing a problem of a conventional damper for a pivotal connecting portion.

[Explanation of symbols]

1 Damper for Rotating Connection Part 2 Base Material 3 Moving Member 3a Lid 3b Toilet Seat 4 Rotating Connection Part 5 Opening / Closing Mechanism 6 Cap 7 External Casing 8 Mounting Bracket 8a Rotating Side Mounting Bracket 8b Fixed Side Mounting Bracket 10 Shock Absorbing Unit 11 Times Dynamic casing 12 Damper rotor 12a Pressing piece 14 Output shaft (rotating shaft) 15 Shaft head 20 One-way movable part 21 Sliding friction sleeve 21a Sliding surface 22 Ratchet rotor 22a Locking claw 23 Rolling roller 24 Input shaft (rotating shaft) 25 Ratchet Ring 25a Locking Claw 26 Sliding Rotor 26a Sliding Surface 27 Locking Claw 28 Energizing Means 30 Free Rotating Mechanism 31 Shaft Head 32 Fitting Hole 32a Fitting 33 Fitting Hole 33a Fitting Shaft 34 Engagement hole part 34a Engagement part 35 Locking piece 36 Fixed sleeve 37 Movable sleeve 40 Power transmission mechanism 41 Power Reaches rod 42 power transmission sleeve 50 bearing rod 51 slider 52 slide guide A natural lowerable position B closed position B 'boundary points J ₁ rotation connection portions J ₂ pivot connection portion L moving distance O lid opening position P viscoelastic material S Free rotation space t _D Gap t _R Gap

Claims (5)

[Claims] 1. A shock absorbing device provided for an opening / closing mechanism comprising a substrate, a moving member, and a rotary connecting part, wherein the shock absorbing device is provided for the rotary connecting part. And a shock absorbing part comprising a rotating casing and a damper rotor combined in a multiple concentric manner with a proper gap, and a viscoelastic material filled in the gap, and a device for shock absorbing by a ratchet mechanism. It is characterized by comprising a one-way movable part for restricting a shock absorbing direction, and a free rotation mechanism for delaying an operation starting point of the one-way movable part and allowing the movable member to freely rotate within a certain angle range. The damper for the pivotal connection part. 2. The shock absorbing portion, the one-way movable portion, and the free rotation mechanism are arranged in series so that respective rotation centers pass on the same axis.
The damper for the pivoting connection described. 3. The one-way movable part includes a rubbing sleeve having a rubbing surface formed inside, and a ratchet rotor having a plurality of locking claws provided on the peripheral surface of the rubbing sleeve. And a rolling roller which is provided in a gap between the rubbing sleeve and the ratchet rotor and which switches between contact and disconnection between the rubbing sleeve and the ratchet rotor according to a change in the contact position with the locking claw. Claim 1 characterized by
Alternatively, the damper for the pivotal connecting portion described in 2. 4. The free rotation mechanism is fitted to a shaft head portion of a rotation shaft provided for the damper rotor or the ratchet rotor, in a loosely fitted state with respect to the shaft head, and at the moving member. And a fitting hole portion that is provided in a fixed state, and a free rotation space that allows rotation of the shaft head within a certain angle range is formed in the fitting hole portion. The damper for a rotary connection part according to claim 1, 2 or 3. 5. The damper for a rotary connecting portion according to claim 1, wherein the viscoelastic material is formed of bouncing putty.