JP3603235B2 - Damper for rotary connection - Google Patents

Description

[0001]
[Object of the invention]
[Industrial applications]
The present invention relates to a damper for a rotary connection part for shock absorption, which is provided for an opening / closing mechanism using a door, a lid, or the like as a moving member and suppresses a sudden movement of the moving member.
[0002]
BACKGROUND OF THE INVENTION
The most basic mechanism for opening and closing doors, windows, and other fittings, furniture, Household Buddhist Altars, safes, automobiles, and other doors, as well as lids and seats for Western-style flush toilets and piano lids. Has a configuration in which a rotary connection portion is provided between the base material and the moving member, and the two are rotatably connected by the rotary connection portion.
And when these doors and lids are heavy, or when these doors and lids are inferior in material or structure in strength and may be damaged by sudden opening and closing operation In such a case, a braking device for absorbing impact may be used in order to suppress a sudden movement of the moving member.
[0003]
Many of such braking devices are provided so as to connect the base member and the moving member at a position radially separated from a rotation connection portion serving as a rotation fulcrum. The existence of the braking device can be clearly confirmed, and this type of braking device is structurally relatively large, which is a factor that impairs the appearance of doors and lids as moving members.
[0004]
Most of the shock absorbing means in such a braking device use a viscous fluid such as air, oil, or grease, and a seal mechanism for preventing the outflow of such air or viscous fluid is required. As described above, the structure of the brake device is inevitably increased, the weight is increased, and the manufacturing cost is increased. In addition, these air and viscous fluids can always obtain only a constant shock absorbing force regardless of the magnitude of the load, a sudden change in the load, or the direction of the load. I couldn't say.
[0005]
On the other hand, it deforms extremely flexibly with a slow load change (when the load resistance is applied slowly and gradually), and is strong with a sudden load change (when the load resistance is applied instantaneously at once). A bouncing putty is known as a material having a resistance and a property of maintaining its original shape.
[0006]
However, this bouncing putty has a weak point that self-retaining property is weak and it flows due to gravity even when there is no load, so that it cannot maintain a specific shape, its own weight is heavy, it is relatively expensive, etc. The applications used while having the above excellent characteristics are limited, for example, children's toys, research teaching materials for rheology measurement, or JP-A-4-117903 filed by the applicant of the present invention, entitled "Stress buffering structure in shoes". ”And so on in only a few areas.
[0007]
Therefore, the present applicant has already filed an application called Japanese Patent Application No. Hei 6-308164 "Brake Apparatus", paying attention to the characteristics of the bouncing putty, and applying this bouncing putty to the opening / closing mechanism to achieve a very simple structure. An extremely useful braking device has been developed which can obtain a desired impact absorbing power and can adapt to various load changes. However, some moving members, such as the lids and seats of Western-style flush toilets or the lids of pianos, open lightly and quickly when the lid is opened, receive large shock absorption when the lid is closed, and close slowly. In some cases, you may want the absorption to work in only one direction.
[0008]
In such a case, as disclosed in Japanese Patent Application No. 6-308164, a one-way movable mechanism for regulating the direction of impact absorption 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 a bouncing putty in a predetermined shape, so that there is room for improvement in practical use. I was Further, only by providing such a one-way movable mechanism, the moving member 3 at the cover opening position O as shown in FIG. 15A can be naturally lowered by its own weight as shown in FIG. 15B. When rotating to the position A, the shock absorbing power of the bouncing putty acts to make the operation heavy, leaving room for improvement in terms of usability.
[0009]
[Technical items that we attempted to develop]
The present invention has been devised based on the recognition of such a background, and a new mechanism for improving the configuration of the one-way movable mechanism and solving the problem of the usability of the one-way movable mechanism. By mounting a damper, it was possible to obtain a desired shock absorbing force with an extremely simple structure, to cope with various load changes, and to develop a new rotary connection damper that is easy to use.
[0010]
Configuration of the Invention
[Means for achieving the purpose]
That is, a damper for a rotation connection part according to claim 1 is a shock absorbing device provided for an opening / closing mechanism including a base material, a moving member, and a rotation connection part, wherein the shock absorption device is A shock absorbing portion provided for the rotating connection portion and comprising a rotating casing and a damper rotor combined in a multiple concentric manner with an appropriate gap therebetween, and a viscoelastic material filled in the gap, and a ratchet; A one-way movable part that regulates the direction of shock absorption of the shock absorbing device by a mechanism, and a free rotation that delays the operation start point of the one-way movable part and allows the free rotation of the moving member within a certain angle range. With a mechanismThe one-way movable portion includes a rubbing sleeve formed with a rubbing surface on the inside, a ratchet rotor provided in the rubbing sleeve, and formed with a plurality of locking claws on a peripheral surface. A rolling roller that is provided in a gap between the rubbing sleeve and the ratchet rotor and that switches the connection / disconnection between the rubbing sleeve and the ratchet rotor by changing a contact position with the locking claw; and The rubbing sleeve is formed by projecting an input-side end face of the rotating casing in an axial direction, and the shock absorbing portion, the one-way movable portion, and the free rotating mechanism are each provided with a rotation center. Are arranged in series so as to pass on the same axis, and the output shaft provided in a protruding state on the damper rotor is fixed to the base material, while the input shaft of the ratchet rotor in the one-way movable portion is It is connected to the moving member by interposing the free pivoting mechanismIt is characterized by the following.
[0011]
Claims2In addition to the above requirements, in addition to the above requirements, the free rotation mechanism may be configured such that the free rotation mechanism loosely fits with a shaft head of a rotation shaft provided for the damper rotor or the ratchet rotor. And a fitting hole provided in a fixed state with respect to the moving member. The fitting hole includes a free portion that allows the shaft head to rotate within a certain angle range. It is characterized in that a rotation space is formed.
[0012]
Further claims3The above described damper for a rotary connection portion is characterized in that, in addition to the above requirements, the viscoelastic material is formed by a bouncing putty.
It is an object of the present invention to achieve the object by using the configuration of the invention described in each of the claims.
[0013]
Effect of the Invention
That is, the damper for a rotation connection portion according to the first aspect is provided for the rotation connection portion, and includes a shock absorbing portion, a one-way movable portion, and a free rotation mechanism. This makes it possible to give directionality to the shock absorbing force of the shock absorbing portion without damaging the appearance of the opening / closing mechanism. In addition, the provision of the free rotation mechanism makes it possible to delay the operation start point of the one-way movable section, and to easily move the moving member from the open position to the naturally descendable position.Further, a configuration is adopted in which the shock absorbing section, the one-way movable section, and the free rotation mechanism are arranged in series. This allows the shock absorbing portion to transmit the shock absorbing force smoothly and contributes to downsizing. Further, the one-way movable portion is configured by including a rubbing sleeve, a ratchet rotor, and rolling rollers. This not only contributes to downsizing of the one-way movable portion mainly in the axial direction, but also provides a ratchet mechanism with a simple structure and a reliable mounting / removal operation.
[0014]
Claims2In the above described damper for a rotation connection portion, the free rotation mechanism is constituted by a shaft head of the rotation shaft and a fitting hole formed with a free rotation space. As a result, when the fitting hole is rotated together with the moving member, power is not transmitted to the rotating shaft during the range in which the free rotating space is formed, and the side wall of the fitting hole is rotated by the axis of the rotating shaft. Power is transmitted to the rotating shaft only when it comes into contact with the head. Therefore, the operation start point of the one-way movable portion can be delayed with a very simple configuration, which contributes to downsizing of the free rotation mechanism.
[0015]
Further claims3The rotary connection damper described above has a configuration in which a viscoelastic material is formed by a bouncing putty. Thereby, in addition to the effect provided by the one-way movable portion and the free rotation mechanism, a low shock absorbing force is obtained when the moving member is slowly moved, and a high shock absorbing force is obtained when the moving member is rapidly opened and closed. The effect unique to bouncing putty is added.
[0016]
【Example】
Hereinafter, a damper for a rotation connection portion of the present invention will be specifically described with reference to the drawings.
The damper for a rotary connection part of the present invention is used for braking when closing a toilet seat or a lid of a Western-style flush toilet, braking doors, doors and other fittings, or a sash or window frame not included in the category of these fittings. (For example, dampers for side sliding windows in smoke exhaust systems of buildings), brakes for pianos and furniture lids, and other substitutes for dampers, shock absorbers, cylinders, etc. attached to various rotating and rotating parts. Widely used as.
[0017]
In the figure, the reference numeral 1 designates a damper for a rotary connecting portion of the present invention, which is used for an opening / closing mechanism 5 comprising a base material 2, a moving member 3, and a rotary connecting portion 4. Provided. In FIG. 1, a base of a Western-style flush toilet as a base material 2, a toilet seat as a moving member 3, a connection hinge for rotatably connecting the two as a rotation connection portion 4, and an opening and closing mechanism 5 by providing these components An embodiment applied to a connection hinge in such a flush toilet will be described taking a western flush toilet as an example.
[0018]
The rotary connection damper 1 of the present invention includes at least an impact absorbing portion 10, a one-way movable portion 20, and a free rotating mechanism 30, and the impact absorbing portion 10 has an appropriate gap t._D The rotating casing 11 and the damper rotor 12 combined in a multiple concentric manner with a gap t_D And a viscoelastic material P to be basically filled. First, the viscoelastic material P that actually performs the shock absorbing action will be described. As the viscoelastic material P, various putty-like, unvulcanized rubber-like, or viscous materials can be used as long as they have a desired impact absorbing action. Bouncing putty can be applied.
[0019]
The bouncing putty referred to herein is a deformable material that has a very high resistance to a sudden change in load and has a property close to high elasticity or rigidity, though it deforms very flexibly when the load changes slowly. It is a generic term for putty-like substances, and includes, for example, those disclosed in US Pat. No. 2,541,851.
[0020]
It has a two-layer structure consisting of a silicone network having hydrophobic methyl groups and the like, the majority of which is cross-linked, and a structure consisting of a viscous liquid reactive product of a boron mixture and methyl silicone. Having. And the hydrophilic reaction product forms a layer in the interstices of the crosslinked silicone. It is also considered that the specific property of this is that the hydrophilic and hydrophobic groups are in an equilibrium state and that the friction between these groups is large.
[0021]
In other words, when this is dropped on a relatively hard surface, for example, the frictional force between the hydrophilic group and the hydrophobic group acts greatly, so that each molecule does not slip, so it has elasticity. It shows a solid-like property, and also exhibits a kind of rigidity under a sharp impact such as hitting with a hammer. On the other hand, when pressure is gradually applied, the boron component can flow out between the meshes of the network over the frictional force, so that the boron component is extremely flexibly deformed.
[0022]
An example of the components of the bouncing putty is as follows.
Boron-containing siloxane 50-80%
Pigment + silicon dioxide 10-30%
Diorganopolysiloxane 0-15%
Higher fatty acids and other 1%
The bouncing putty is obtained by treating an organopolysiloxane with a mixture of boron, and is continuously obtained by appropriately giving one or both of heat and a catalyst. Here, the mixture of boron includes pyroboric acid, boric anhydride, boric acid, ethyl borate, other borate esters, and the like, and a specific boron mixture can be selected according to the characteristics desired for the product.
[0023]
The following is an example of a method for producing a bouncing putty. The organopolysiloxane used in the production method is an oily methylsiloxane, which is obtained by hydrolysis of a substantially pure dimethylsilicone halogen compound or the like._Three )_Three SiO_0.5 And the middle part is (CH_Three )_Two It is represented by SiO.
[0024]
First, 75 parts of dimethyl silicone oil (representing parts by weight; the same applies hereinafter) and 10 parts of pyroboric acid are mixed, and the mixture is heated in an oven at 150 ° C. for 2 hours. At the end of 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 solidified, and further 45 parts of dimethyl silicone oil and 0.9 parts of 0.9 parts Add benzoyl peroxide to make more mass.
[0025]
The mass 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. The use of a hydrolyzable alkyl borate or the same amount of catalyst is convenient for dispersing a boron mixture in methyl silicone oil.
[0026]
By changing the amount of the boron mixture, the amount of the catalyst, and the heating time, etc., the component ratio of hydrophilicity and hydrophobicity changes, and as a result, the elasticity and flexibility of the bouncing putty as a shock absorbing means Can be controlled. The elasticity and flexibility can also be adjusted by adding a hydrophilic or hydrophobic substance such as glycerin or oleic acid.
[0027]
Such a bouncing putty can of course be used alone, but it is also possible to add a so-called filler as described below to such a bouncing putty. Such a filler has an appropriate bulk, and if it can be integrated with the bouncing putty (dispersed in the bouncing putty and does not separate), it can be formed into a solid body or an appropriate shape such as a flake shape without elasticity. Well, elastic hollow microspheres and fumed silica as described below can be exemplified.
Next, the elastic micro hollow sphere will be described. The elastic hollow microspheres referred to herein are powders represented by, for example, Expancel (registered trademark) developed by Expancel, Sweden, and Matsumoto Microsphere (registered trademark) manufactured by Matsumoto Yushi Seiyaku Co., Ltd. is there. EXPANCEL is an organic micro hollow sphere made by using a copolymer of vinylidene chloride and acrylonitrile as a shell and encapsulating and isolating isobutane as an expander, manufactured in 1980.
[0028]
There are two types of EXPANCEL: unexpanded (unexpanded) and expanded (expanded). The expanded one has an average particle size of 40 μm and a particle size range of 10 to 100 μm. Are larger than those having an average particle size of 10 μm and a particle size range of 5 to 30 μm, and those having been expanded have excellent buffering properties.
[0029]
Expancel has a shell wall of about 0.1 μm and is elastic, so it is compressed when a load is applied. However, since it has the property of returning to its original state when the load is stopped, this is mixed into the bouncing putty. Then, the shock resistance and the cushioning property are improved. Since the Expancel is a sphere, a stress distribution far superior to other fillers can be obtained.
[0030]
In addition, Matsumoto microspheres are classified into two types: one that contains a vinylidene chloride copolymer as a shell wall and contains low-boiling hydrocarbons, and the other that contains low-boiling hydrocarbons in a shell wall that does not contain vinylidene chloride. An expanded (foamed) F-80ED having a diameter range of 20 to 80 μm is suitable.
[0031]
These elastic micro hollow spheres are usually added and mixed in an amount of 1 to 10 parts per 100 parts (by weight) of the bouncing putty, depending on the adjustment of the bouncing putty.
The kneading machine 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-retaining property by itself, and flows when left alone, but by mixing elastic hollow microspheres into it, it has self-retaining property Become. In addition, the bouncing putty itself has a relatively large specific gravity, but by mixing elastic hollow microspheres having a small specific gravity, the overall weight can be set small.
[0032]
As the viscoelastic material P, in addition to the above-mentioned bouncing putty, materials such as silicone bouncing putty, silicone rubber, unvulcanized rubber (rubber compound), and adhesive can be used. Among them, X-30-1016-22 and KE-SA-P of Shin-Etsu Chemical Co., Ltd. as silicone putty, SH831 of Dow Corning Toray Silicone Co., Ltd. as silicone rubber, unvulcanized rubber (rubber compound) KE-5540, KE-574-U, KE-931-U, KE-520-U of Shin-Etsu Chemical Co., Ltd., FR-601 of Nissin Chemical Industry Co., Ltd. Trefirm from Silicone Co., Ltd. can be used as an example.
[0033]
Next, the rotating casing 11 and the damper rotor 12, which are other components of the shock absorbing unit 10 having the viscoelastic material P, will be described. As shown in FIGS. 2 and 3, the rotating casing 11 has a cylindrical shape as an example, and the rotating casing 11 has a circular shape whose concave surface is slightly recessed as shown in FIGS. The configuration is such that the columnar damper rotor 12 is internally fitted. The concave portion formed on the peripheral surface of the damper rotor 12 is provided for the purpose of securing a space for filling the viscoelastic material P. Therefore, the concave portion is not provided on the damper rotor 12 side, and the rotating casing 11 is not provided. The damper rotor 12 and the rotating casing 11 may be provided on both sides. On one end face of such a damper rotor 12, an output shaft 14 passing through the same rotation center as that of the damper rotor 12 is provided in a protruding state, and an end portion thereof serves as a connection portion with the base material 2 side. A shaft head 15 is provided.
[0034]
As a material of the rotating casing 11 and the damper rotor 12, metals such as brass, stainless steel, and aluminum, various industrial plastics having high mechanical strength, other synthetic resins, and synthetic rubbers can be used. Further, if the airtightness of the connection between the rotating casing 11 and the damper rotor 12 is insufficient and there is a risk of the viscoelastic material P to be filled out, a simple sealing mechanism such as an O-ring may be provided. Is also possible.
[0035]
Further, the viscoelastic material P is provided with a gap t formed between the rotating casing 11 and the damper rotor 12 where the viscoelastic material P is installed._D And is firmly adhered to them.
The term “strongly adhered” as used herein means a means for strengthening adhesion as described below, and as an example, a means for strengthening chemical adhesion with a primer, an adhesive or the like can be employed. The adhesion reinforcing means is provided to prevent the viscoelastic material P from rotating without being subject to any restrictions on the rotating casing 11 and the damper rotor 12, thereby preventing the viscoelastic material P from exerting its original function. This is the means to be taken. For this purpose, for example, the aforementioned chemical adhesion strengthening means is employed, and depending on the material of the rotating casing 11 or the damper rotor 12, for example, a metal and silicone (bouncing putty), a hard resin such as polycarbonate and a silicone (bouncing putty), respectively. It is desirable to fill the viscoelastic material P after applying a primer and an adhesive suitable for bonding. Specifically, primers A to D of Toray Dow Corning Silicone Co., Ltd. and Trefarm, which is an adhesive, FC10α, β of Toshiba Silicone Co., Ltd., or one-part heat-curable silicone adhesive of Shin-Etsu Chemical Co., Ltd. An agent such as KE-1820 can be used.
[0036]
In addition to the above-mentioned chemical adhesion reinforcing means, it is also possible to use a mechanical adhesion reinforcing means as described below in combination. More specifically, mechanical adhesion reinforcing means such as forming the surface roughness of the rotating casing 11 and the damper rotor 12 to be rough, or providing grooves or folds in the axial direction to provide irregularities in the installation site of the viscoelastic material P are provided. Can be adopted. Incidentally, when grooves or folds are formed in the axial direction, the viscoelastic material P enters into these grooves or folds, and this becomes resistance when the rotating casing 11 and the damper rotor 12 rotate, and the viscoelastic material P Is effectively prevented from slipping. That is, it acts to complement the chemical adhesion enhancing means.
[0037]
Next, the one-way movable section 20 will be described. The one-way movable part 20 serves to regulate the direction of absorbing the shock of the damper 1 for the rotary connection part of the present invention. In the present invention, a ratchet mechanism is adopted as an example. More specifically, a rubbing sleeve 21 having a rubbing surface 21a formed inside, a ratchet rotor 22 provided in the rubbing sleeve 21 and having a plurality of locking claws 22a formed on a peripheral surface thereof, The gap t between the rubbing sleeve 21 and the ratchet rotor 22_R And a rolling roller 23 that switches the connection and disconnection between the rubbing sleeve 21 and the ratchet rotor 22 according to a change in the contact position with the locking claw 22a.
[0038]
In the embodiment shown in FIGS. 2 and 3, the input side end surface of the rotary casing 11 in the shock absorbing section 10 is projected in the axial direction so that the rotary casing 11 becomes the same rotary center as the rotary casing 11. A rubbing sleeve 21 is formed. An input shaft 24 is provided at the center of rotation of the ratchet rotor 22. An end of the input shaft 24 on the input side is a shaft head which is also a part of a free rotation mechanism 30 described later. 31 are formed. In this specification, the term “rotation axis” is used unless the input shaft 24 and the output shaft 14 are used separately.
[0039]
Next, the free rotation mechanism 30 will be described. The free rotation mechanism 30 serves to delay the operation start point of the one-way movable section 20 and allow the movable member 3 to freely rotate within a predetermined angle range. Specifically, the shaft heads 15, 31 of the rotating shafts 14, 24 provided for the damper rotor 12 or the ratchet rotor 22 fit loosely into the shaft heads 15, 31, And a fitting hole 32 provided in a fixed state with respect to the moving member 3.
[0040]
Further, a free rotation space S is formed in the fitting hole 32 to allow the shaft heads 15 and 31 to rotate within a certain angle range. 3 is appropriately adjusted depending on the difference in the lid opening position O and the like. By the way, in this embodiment shown in FIGS. 1 to 3, since the western flush toilet is used as the opening / closing mechanism 5, the free rotation space is set so that the free rotation angle of the shaft heads 15 and 31 is about 20 °. The dimension of S is set.
[0041]
In this embodiment shown in FIGS. 1 to 3, the arrangement of the shock absorbing unit 10, the one-way movable unit 20, and the free rotation mechanism 30 is arranged in series so that each rotation center passes on the same axis. The state is set, and the free rotation mechanism 30, the one-way movable unit 20, and the shock absorbing unit 10 are arranged in this order from the input side. In this embodiment shown in FIGS. 1 to 3, caps 6 are provided at both ends of the rotating casing 11, and the cap 6 allows the shock absorbing section 10 and the one-way movable section 20 to be in the same casing. It is configured to be incorporated into the body and unitized.
Note that the arrangement of the free rotation mechanism 30, the one-way movable section 20, and the shock absorbing section 10 is not limited to the above-described arrangement. For example, the order of the free rotating mechanism 30, the shock absorbing section 10, and the one-way movable section 20 from the input side. It is also possible to dispose them. By the way, in the case of such an arrangement, further operational stability can be expected in the rotary connection portion damper 1 in the use state shown in FIG.
[0042]
The damper 1 for a rotary connection of the present invention thus configured is used as the rotary connection 4 or as a part of the rotary connection 4. In this embodiment shown in FIG. 6A, an embodiment in which the rotary connection portion 4 is used is shown. In FIG. 6B, such a rotary connection portion damper 1 is further provided as an example of a wing plate. An embodiment is shown in which the rotary connection portion 4 is configured by providing a mounting bracket 8 having a shape of a circle. Next, another embodiment having a different installation mode or a partial configuration will be described.
[0043]
[Other embodiments]And reference forms related to the present invention]
First, FIG. 4 shows an embodiment in which the installation mode of the rotation connecting portion damper 1 of the present invention is devised so as to be applicable to the rotation of both the lid 3a and the toilet seat 3b of a Western flush toilet. That is, two kinds of damper 1 for a rotation connection part, that is, a rotation connection part damper 1 for the rotation of the lid 3a and a rotation connection part damper 1 for the rotation of the toilet seat 3b are used, and these are rotationally connected. Power is transmitted to the input shaft 24 of each of the rotary connecting portion dampers 1 separately from the lid 3a or the toilet seat 3b.
[0044]
That is, a power transmission mechanism 40 that transmits the rotation of the lid 3a or the toilet seat 3b to the input shaft 24 of each of the rotation connection portion dampers 1 is provided at the axial center of the rotation connection portion 4. The power transmission mechanism 40 includes a power transmission rod 41 having a fitting hole 32 at one end (the left end in the illustrated embodiment), and two power transmission rods 41 which are fitted to the power transmission rod 41 in a loosely fitted state. And a power transmission sleeve 42. One end (right side in the illustrated embodiment) of the two power transmission sleeves 42 is provided with a fitting hole 32 as in the case of the power transmission rod 41. A lid 3a is connected to the transmission rod 41, and a toilet seat 3b is connected to the power transmission sleeve 42, respectively.
[0045]
FIG. 5 shows a rotary connection portion 4 suitable for holding a relatively heavy moving member 3, which improves the configurations of the mounting bracket 8 and the shaft heads 15, 31. This increases the mechanical strength and suppresses deformation in the bending direction. That is, the mounting bracket 8 is constituted by the turning-side mounting bracket 8a having a U-shaped cross section and two fixed-side mounting brackets 8b having an L-shaped cross section, and the fitting hole 32 is formed in the turning-side mounting bracket 8a. And a fitting hole 33 are provided so as to pass on the same rotation axis. A fitting hole 33 is formed in one of the two fixed-side mounting brackets 8b, and a fitting hole 33 is formed in the other fixed-side mounting bracket 8b. An engagement hole 34 is formed.
[0046]
The shaft head 15 and the shaft head 31 described below fit into the fitting hole 32, the fitting hole 33, and the engaging hole 34 in the mounting bracket 8.
That is, an engaging portion 34a that engages with the engaging hole 34 of the fixed-side mounting bracket 8b is provided on the base side of the shaft head 15, and a fitting hole 33 of the rotating-side mounting bracket 8a is provided on the end side. There is provided a fitting shaft 33a which is rotatably fitted to the fitting shaft 33a. On the other hand, a fitting portion 32a that rotates within a predetermined angle range with respect to a fitting hole 32 formed in the rotation-side mounting bracket 8a is provided on the base side of the shaft head 31. Is provided with a fitting shaft 33a rotatably fitted into a fitting hole 33 formed in the fixed-side mounting bracket 8b. By combining these members, it is possible to form the rotary connecting portion 4 which can support the rotary connecting portion damper 1 of the present invention at two points in a double-supported state.
[0047]
In addition, in the embodiment shown in FIGS. 1 to 3, the shock absorbing portion 10 and the one-way movable portion 20 are integrally formed. However, as shown in FIG. 20 are constructed separately from each other, and they are connected in series during the assembly process so as to be housed in the outer casing 7.Take a reference formIt is also possible. By the way, in the case of such a configuration, several types of the shock absorbing portion 10 and the one-way movable portion 20 having different characteristics and structures are prepared in advance, and these may be appropriately combined and used according to the use situation or the like. When a part is damaged, only the damaged member can be replaced and used.
[0048]
In FIG. 8, the cross-sectional shape of the damper rotor 12 is changed so that the viscoelastic material P is deformed not only in the shear direction but also in the compression or tension direction. That is, a plurality of blade-shaped pressing pieces 12a are formed on the outer periphery of the damper rotor 12, and four pressing pieces are shown in FIG. 8 (a), three pressing pieces are shown in FIG. 8 (b), and two pressing pieces are shown in FIG. 8 (c). Each of the strips 12a is shown. Needless to say, the shape is not limited to such a blade-like shape, but may be an appropriate shape such as a semicircular shape, an elliptical shape, or the like.
[0049]
Further, FIG. 9 shows an embodiment in which the impact absorbing area of the viscoelastic material P is increased by changing the vertical cross-sectional shapes of the rotating casing 11 and the damper rotor 12. 9 (a) shows an embodiment in which the area of the shock absorbing action in the axial direction is increased, and FIG. 9 (b) shows the example of the area of the shock absorbing action in the radial direction. It shows an embodiment that aims to increase.
[0050]
FIG. 10 shows two types of one-way movable parts 20 having different configurations.Reference formFIG. 10A illustrates the relationship between the rubbing sleeve 21 and the ratchet rotor 22 in the embodiment shown in FIGS. That is, the one-way movable portion 20 shown in FIG. 10A is provided with a ratchet ring 25 having a plurality of locking claws 25a formed on an inner peripheral surface, and provided in the ratchet ring 25, and the peripheral surface is rubbed with a sliding surface 26a. And a rolling roller 23 provided in a gap tR between the two.
On the other hand, the one shown in FIG. 10 (b) divides the ratchet rotor 22 into two parts in the axial direction,Locking claw27, and a compression coil spring, which is an example of the urging means 28, is contracted on one of the divided ratchet rotors 22.Reference formIt is.
[0051]
11 shows various embodiments in which the configuration of the free rotation mechanism 30 is different. Of these, the one shown in FIG. 11 (a) shows the rubbing sleeve 21 and the ratchet rotor. Gap t with 22_R Is relatively large, so that the moving distance L of the rolling roller 23 is increased, and the resulting delay of the ratchet operation start point is used as the free rotation mechanism 30. In this case, of course, a separate holding mechanism for preventing the rolling rollers 23 from falling downward is required.
FIG. 11B shows an embodiment in which a free rotation mechanism 30 is applied between the ratchet rotor 22 and the input shaft 24.
[0052]
FIGS. 11 (c) and 11 (d) show a free rotation mechanism 30 having a configuration in which the free rotation angle can be adjusted in a freely adjustable manner. Among them, the one shown in FIG. 11 (c) is an embodiment in which the free rotation angle can be adjusted stepwise by using a detachable locking piece 35, and the one shown in FIG. 11 (d). Has a configuration in which the free rotation angle can be varied steplessly by arranging a fixed sleeve 36 inside and a movable sleeve 37 outside the fitting hole 32.
[0053]
In addition, the application point of the damper 1 for the rotation connection portion of the present invention is not limited to the connection hinge that directly connects the base member 2 and the moving member 3, and the other rotation connection portion in the opening / closing mechanism 5. In the case where the rotary connection 4 exists, the present invention can be applied to the rotary connection 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. 12, the rotary connection portion 4 (J in the figure) between the moving member 3 and the support rod 50 is provided.₁ ), Or a rotational connection 4 (J in the figure) between the support rod 50 and the slider 51._Two ), It is also possible to apply the damper 1 for a rotary connection part of the present invention.
[0054]
Next, in the case where the lid or the toilet seat of the Western flush toilet is used as the moving member 3 and the case where the smoke exhaust window is used as the moving member 3, the opening and closing procedure is described as the operation of the rotary connection damper 1 of the present invention. This will be described together with the state.
(I) When the lid or toilet seat of the flush toilet is used as a moving member (see FIGS. 13A and 13B)
In this case, the moving member 3 is initially positioned horizontally (this state is the lid closing position B), and from this state to the boundary point B ', the free rotation mechanism 30 is operated, and almost no load is applied. To rotate. Then, from the boundary point B 'to the lid opening position O, the one-way movable portion 20 acts, but the rolling roller 23 is in an idling state in which the rolling roller 23 is not locked, and during this time, the roller rotates almost without load.
[0055]
Next, when the moving member 3 is closed, from the open position O to the naturally descendable position A, the free pivoting mechanism 30 works to pivot with almost no load, and further from the naturally descendable position A. Since the one-way movable portion 20 operates in the locked state toward the lid closing position B, the power is transmitted to the shock absorbing portion 10 at 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.
[0056]
(Ii) When the window for smoke exhaust is a moving member (see FIGS. 14A and 14B)
In this case, the moving member 3 is initially positioned vertically (this state is the lid closing position B), and the free rotation mechanism 30 operates from this state to the naturally descendable position A.One-way movable part20 is in a state where power is not transmitted. However, since the smoke exhaust window is generally required to be airtight, the closed state of the window is relatively strong, and unless a certain pressing force is applied, the movable member 3 is moved to the position A where the natural descending is possible. I can't let that happen. Therefore, when opening the moving member 3, an appropriate pressing force is applied by using an appropriate pressing means (for example, an air cylinder, a spring, an electromagnetic solenoid, a cam lever using a lever principle) provided manually or separately. It is necessary to perform the lid opening operation.
[0057]
When the moving member 3 reaches the naturally descendable position A, the one-way movable section 20 starts operating. In the case of the present embodiment, the one-way movable section 20 is set so as to be locked in the cover opening direction, contrary to 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, and the moving member 3 gradually descends while receiving the shock absorbing action of the viscoelastic material P, and moves to the lid opening position O. Reach.
[0058]
Next, when the moving member 3 is closed, the free rotation mechanism 30 operates from the lid opening position O to the boundary point B ′, and the moving member 3 rotates with almost no load. Since the one-way movable portion 20 is set to operate in the idling state even from the boundary point B 'to the lid closing position B, the movable member 3 rotates with almost no load during this time, and the moving member 3 is closed. .
[0059]
In addition, the damper 1 for a rotation connection part of the present invention can be applied to a horizontally opening type door that rotates in the horizontal direction. In this case, the one-way movable portion 20 is set to be in the locked state in the closing direction, or the two-way damper 1 for the rotating connection portion having different operating directions and operating drags is used to open and close the closing direction. It is also possible to set so that an appropriate shock absorbing force works in both directions. Further, the damper 1 for a rotation connection portion of the present invention can be applied to a sliding (slide) type window frame (sash) and a door. In this case, the damper 1 for the rotation connection part of the present invention is disposed at the closed end and the open end of the sliding moving member 3, respectively, and when the moving member 3 approaches the closed end or the open end, the moving member 3 is moved. A part of the end face of the rotary joint 3 comes into contact with a contact piece connected to the input shaft 24 of the rotary connection damper 1, and the rotation of the contact piece causes the rotary connection damper 1 to operate. It is set to.
[0060]
【The invention's effect】
The rotational connection damper 1 of the present invention has the above-described configuration, and the following effects are exhibited by having such a configuration.
That is, the damper 1 for the rotation connection part according to the first aspect is provided for the rotation connection part 4 and includes an impact absorbing part 10, a one-way movable part 20, and a free rotation mechanism 30. I have. This makes it possible to give directionality to the shock absorbing force of the shock absorbing unit 10 without damaging the appearance of the opening / closing mechanism 5 by the shock absorbing unit 10. In addition, the provision of the free rotation mechanism 30 makes it possible to delay the operation start point of the one-way movable section 20, and it is easy to move the moving member 3 from the open position O to the naturally descendable position A.Further, the shock absorbing unit 10, the one-way movable unit 20, and the free rotation mechanism 30 are arranged in series. This allows the shock absorbing portion 10 to transmit the shock absorbing force smoothly and contributes to downsizing. Further, the one-way movable section 20 is constituted by including a rubbing sleeve 21, a ratchet rotor 22, and a rolling roller 23. This not only contributes to the downsizing of the one-way movable portion 20 mainly in the axial direction, but also provides a ratchet mechanism with a simple structure and a reliable attachment / detachment operation.
[0061]
Claims2In the described damper 1 for a rotation connection portion, the free rotation mechanism 30 is configured by the shaft heads 15 and 31 of the rotation shafts 14 and 24 and the fitting hole 32 in which the free rotation space S is formed. ing. As a result, when the fitting hole 32 rotates together with the moving member 3, power is not transmitted to the rotating shafts 14 and 24 during the range in which the free rotation space S is formed. Power is transmitted to the rotating shafts 14 and 24 only when the side walls contact the shaft heads 15 and 31 of the rotating shafts 14 and 24. Therefore, the operation start point of the one-way movable unit 20 can be delayed with an extremely simple configuration, which contributes to the downsizing of the free rotation mechanism 30.
[0062]
Further claims3The described damper 1 for a rotary connection portion has a configuration in which the viscoelastic material P is formed by a bouncing putty. Accordingly, in addition to the action provided by the one-way movable unit 20 and the free rotation mechanism 30, the impact absorbing power is low when the moving member 3 is moved slowly, and the impact is high when the moving member 3 is rapidly opened and closed. An additional characteristic of bouncing putty that an absorbing power is obtained is added.
And the effect brought by such a configuration of each claim acts synergistically, thereby achieving a further improvement in the usability of the moving member 3 and obtaining a desired shock absorbing force with a very simple structure. It is possible to provide a damper 1 for a rotary connection portion that can respond to various changes in load.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment in which a damper for a rotation connection part of the present invention is applied to a rotation connection part of a Western flush toilet.
FIG. 2 is an exploded perspective view showing an example of a rotary connection portion damper of the present invention.
FIG. 3 is a longitudinal sectional front view of the same and a cross-sectional side view showing a state of being broken along lines bb, cc, and dd in FIG.
FIG. 4 is a vertical sectional front view showing another embodiment in which the installation mode is different.
FIG. 5 is an exploded perspective view showing a rotary connection part having increased mechanical strength.
FIGS. 6A and 6B are a front view and a plan view showing two examples in which the usage of the rotary connection portion damper of the present invention is different.
[FIG. 7] The shock absorbing part and the one-way movable part are configured separately.Reference formFIG.
FIG. 8 is a longitudinal sectional side view showing three examples in which the cross-sectional shape of the damper rotor is changed.
FIG. 9 is a longitudinal sectional front view showing two types of examples in which the impact absorbing area is increased.
FIG. 10 shows two types of one-way movable parts having different configurations.Reference formFIG.
FIG. 11 is a cross-sectional side view showing various embodiments having different configurations of a free rotation mechanism.
FIG. 12 is a side view showing an opening / closing mechanism having a plurality of rotation connection portions.
FIG. 13 is an operation principle diagram schematically showing a movement locus of the moving member when the lid or the toilet seat of the flush toilet is used as the moving member.
FIG. 14 is an operating principle diagram schematically showing a movement locus of the moving member when the smoke exhaust window is used as the moving member.
FIG. 15 is a skeletal operation principle diagram showing a problem of the conventional damper for a rotary connection portion.
[Explanation of symbols]
1 Damper for rotary connection
2 Base material
3 moving members
3a Lid
3b toilet seat
4 Rotating connection
5 Opening / closing mechanism
6 caps
7 outer casing
8 Mounting bracket
8a Rotating side mounting bracket
8b Fixed side mounting bracket
10 Shock absorber
11 Rotating casing
12 Damper rotor
12a Pressing piece
14 Output shaft (rotating shaft)
15 Axis head
20 One-way moving parts
21 rubbing sleeve
21a Sliding surface
22 Ratchet rotor
22a Locking claw
23 Rolling rollers
24 Input shaft (rotating shaft)
25 Ratchet Ring
25a locking claw
26 rubbing rotor
26a sliding surface
27 Locking Claw
28 biasing means
30 Free rotation mechanism
31 axis head
32 fitting hole
32a fitting part
33 Mating hole
33a mating shaft
34 Engagement hole
34a engaging part
35 Locking Top
36 fixed sleeve
37 Movable sleeve
40 Power transmission mechanism
41 Power transmission rod
42 power transmission sleeve
50 Bearing rod
51 Slider
52 Slide Guide
A Possible natural descent position
B Closing position
B 'boundary point
J₁     Rotating connection
J_Two     Rotating connection
L Travel distance
O Opening position
P viscoelastic material
S Free rotation space
t_D     gap
t_R     gap

Claims (3)

In a shock absorbing device provided for an opening / closing mechanism including a base material, a moving member, and a rotation connection portion, the shock absorption device is provided for the rotation connection portion and has an appropriate gap. A shock absorbing portion comprising a rotating casing and a damper rotor combined in a multiple concentric manner with a gap therebetween and a viscoelastic material filled in the gap, and a ratchet mechanism for regulating a shock absorbing direction of the shock absorbing device. a one-way movable portion that, the one-way delay the operation starting point of the movable portion, Ri formed comprises a free pivoting mechanism that allows free rotation in a range of predetermined angle of said moving member, said one-way moving part, A rubbing sleeve having a rubbing surface formed inside; a ratchet rotor provided in the rubbing sleeve and having a plurality of locking claws formed on a peripheral surface; and a rubbing sleeve and a ratchet rotor And a rolling roller that switches between a rubbing sleeve and a ratchet rotor by changing a contact position with the locking claw, and the rubbing sleeve is The input side end face of the rotary casing is formed to protrude in the axial direction, and the shock absorbing part, the one-way movable part, and the free rotary mechanism are such that their respective rotation centers pass on the same axis. The output shaft arranged in series and further provided in a protruding state on the damper rotor is fixed to the base material, while the input shaft of the ratchet rotor in the one-way movable section is interposed with the free rotation mechanism. A damper for a rotary connecting part, which is connected to a moving member . The free rotation mechanism is provided with a shaft head of a rotation shaft provided for the damper rotor or the ratchet rotor, fitted in a loose fit state with the shaft head, and provided in a fixed state with respect to a moving member. A free rotation space that allows rotation of the shaft head within a certain angle range is formed in the fitting hole. 2. The damper for a rotary connection according to claim 1 . The viscoelastic material according to claim 1 or 2 pivot connection portion damper according, characterized in that it is formed by the bouncing putty.

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