JP2010276182A - Suction cup device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction cup device exhibiting and maintaining powerful suction force even to a rugged mounting surface. <P>SOLUTION: The suction cup device is constituted by mounting a ring-like suction member 32 formed of a rubber material comparatively soft to follow and stick closely to even the ruggedness of the mounting surface, almost concentrically to the lower face peripheral edge of a suction body 31 formed of an elastic material comparatively hard with high resilience. A check valve 38 is provided on an exhaust port 31d of the suction body. When the suction body is pressed to the mounting surface and elastically deformed and the ring-like suction member is compressed to stick closely to the mounting surface, the valve is opened to smoothly exhaust air in a suction cup to the outside. A spring plate 33 disposed between a cover 35 and the suction body is compressed when the suction cup device is pressed to the mounting surface, to provide spring force in a direction to lift the suction cup body and the ring-like suction member, and negative pressure in the suction cup is heightened to increase suction force conjointly with the repulsion force of the material itself of the suction cup body. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suction cup device and, in particular, because it strongly adsorbs even an uneven surface, for example, a portable navigation device, an in-vehicle device attachment for detachably installing a portable device such as a mobile phone on a dashboard of an automobile, etc. The present invention relates to a suction cup device that can exhibit high utility as a device.

  A suction cup device made of elastic material such as rubber (elastomer) in a substantially inverted dish shape exerts an adsorption force by utilizing the pressure difference between the negative pressure formed inside and the atmospheric pressure when pressed against the mounting surface. Because it can be adsorbed without using adhesives, the mounting surface is not damaged or soiled, and it is easy to remove and can be repeatedly attached and detached. For a long time, it has been used for a wide range of purposes.

  In general, the suction cup device can exert a strong suction force on a flat and smooth surface such as a mirror surface due to its suction mechanism, but it can be used for automobile dashboards, concrete, tiles, polished glass, etc. Even if it is attempted to be adsorbed on a surface having irregularities, it is difficult to maintain negative pressure due to the escape of internal air, and in many cases, sufficient adsorption force cannot be exhibited or maintained.

  For example, as a navigation device for an automobile, there is known a portable navigation device in which a main body and a display are separately configured, and a relatively small and integrated navigation device. The type navigation device (hereinafter sometimes abbreviated as “PND”) can be mounted on the vehicle and can be removed and carried. For example, it can be taken home to perform destination setting operations or another vehicle. If you have a TV tuner or DVD playback function, you can watch TV or DVD outdoors. Rather, portable navigation devices are the mainstream in Europe and the United States, and are expected to spread widely in Japan in the future. And most of the mounting devices for mounting the portable navigation device on the vehicle adopt a form that is fixed to the windshield or dashboard of an automobile with a suction cup.

  By the way, in many of the conventional suction cup devices, the suction surface of the suction cup that is attracted to the mounting surface is formed as a part of the suction cup body. That is, the suction cup body and the suction surface are formed of the same material. However, such a suction cup device cannot exert a sufficient suction force on a mounting surface having irregularities as in the above-described dashboard. In other words, in order to absorb unevenness, the suction cup itself must be made of a sufficiently soft material and close to the uneven surface to block the air passage. Even if it is formed, the shape cannot be maintained and the internal decompression cannot be maintained, so that it cannot function as a suction cup for the uneven surface.

  In order to solve this problem, there has also been proposed a suction cup device in which the suction cup body is made of a relatively hard material such as PVC and at least the surface of the suction cup is covered with a soft material. Since there is a limit to increasing the thickness of the film, it must be a thin film, cannot sufficiently absorb the unevenness, and cannot make a complete adhesion. In addition, even if it is possible to create a perfect contact temporarily by pressing it with a strong pressure, the adhesive surface of the suction cup will lift up after a long time and the suction force will be lost. Therefore, the function as a suction cup could not be fully exerted unless a device for forcibly pulling up the suction cup surface using a screw, a lever or the like while maintaining a tightly pressed state was provided.

  From such a situation, in the suction cup device as the in-vehicle equipment mounting device, a method of adsorbing and fixing the suction cup device on a flat base plate attached to the dashboard surface is widely adopted. If an in-vehicle device such as a portable navigation device is to be mounted on another vehicle, the base plate must be attached to the dashboard surface of the other vehicle. Also, when the mounting device is removed for transfer to another vehicle or for carrying it at home or outdoors, the base plate will remain attached to the dashboard surface, greatly reducing the appearance. I will let you. In addition, the base plate is attached to the dashboard with a relatively strong adhesive to maintain its strength, so that if it is peeled off after a long period of use, it will leave glue marks on the dashboard or damage the dashboard surface was there.

  Patent Documents 1 and 2 below propose a suction cup device having a structure in which a gel layer is provided on a suction cup body formed of an elastic synthetic resin material and the gel layer is used as an adsorption surface. These conventional techniques have the advantage that the suction force on the uneven surface can be increased by forming the suction surface with a gel layer rich in adhesiveness while the suction cup body is made of a somewhat hard material. The adhesive surface is different from the rubber-like material in that the sticking is noticeable and the sticking is noticeable and dust is easily attached. In addition, gels have an intermediate property between liquids and solids, and liquid components dissolve and ooze out when used for a long time or at high temperatures, which can cause dirt or damage on the mounting surface. It is not preferable as a suction cup device for attaching a portable navigation device that is scheduled to be attached and detached and replaced frequently.

JP 2006-347138 A JP 2008-228918 A

  Accordingly, an object of the present invention is to provide a suction cup device having a novel configuration that functions well even on mounting surfaces having irregularities such as automobile dashboards, concrete, tiles, and polished glass, and that does not stain or damage the mounting surface. Is to provide. In particular, it is suitable for mounting on-board equipment to detachably install portable navigation devices, mobile phones and other portable devices on automobile dashboards and on portable dashboard devices and mobile phones and other portable devices on automobile dashboards. It is an object to provide a suction cup device.

  In order to solve this problem, the invention according to claim 1 is formed in a substantially ring shape from a suction cup body formed of a first elastic material and a second elastic material that is softer than the first elastic material. A suction cup device comprising: a ring-shaped suction member attached substantially concentrically to the peripheral edge of the lower surface of the suction cup body.

  According to a second aspect of the present invention, in the suction cup device according to the first aspect, when the suction cup main body is pressed against the mounting surface to be elastically deformed and the ring-shaped suction member is compressed to be brought into close contact with the mounting surface, An exhaust port for discharging air to the outside and forming a negative pressure inside the suction cup is formed in the suction cup body, and the exhaust port allows only the exhaust from the inside to the outside and allows the exhaust from the outside to the inside. A valve means for blocking intake is provided.

  The invention according to claim 3 is the suction cup device according to claim 2, wherein the valve means is fixed on the suction cup body so as to provide an exhaust passage communicating with the exhaust port; It has an on-off valve provided in close contact with the auxiliary mounting ring so as to be able to close the exhaust passage in an airtight manner.

  According to a fourth aspect of the present invention, in the suction cup device according to the first aspect, the ring-shaped suction member is partially joined to the lower peripheral edge portion of the suction cup body, and the non-joined portion serves as a mounting surface of the suction cup body. When the ring-shaped adsorption member is compressed and pressed against the mounting surface by pressing and elastically deforming, the air inside the suction cup is exhausted to the outside and serves as an exhaust path for forming a negative pressure inside the suction cup. .

  According to a fifth aspect of the present invention, in the suction cup device according to any one of the first to fourth aspects, the ring-shaped suction member is fitted into a concave groove formed in the peripheral edge of the lower surface of the suction cup body. It is characterized by.

  The invention according to claim 6 is the suction cup device according to any one of claims 1 to 5, wherein a cover is provided so as to substantially surround the suction cup body and the ring-shaped suction member. .

  According to a seventh aspect of the present invention, in the suction cup device according to the sixth aspect, a notch portion is provided in at least a part of the peripheral edge portion of the cover.

  According to an eighth aspect of the present invention, in the suction cup device according to any one of the sixth and seventh aspects, a spring member is disposed between the cover and the suction cup body, and the suction cup device is pressed against the mounting surface to be deformed. When the gap between the cover and the suction cup main body is narrowed, the spring member is compressed and gives a spring force in a direction to lift the central portion of the suction cup main body while pressing the outer edge of the suction cup main body. It is characterized by.

  The invention according to claim 9 is the suction cup device according to any one of claims 1 to 8, wherein the second elastic material constituting the ring-shaped suction member has a rubber hardness of A5 to A15 according to JIS-K6253. It is an elastomer.

  According to a tenth aspect of the present invention, in the suction cup device according to any one of the first to ninth aspects, the second elastic material constituting the ring-shaped suction member is joined in a layered manner by overlapping a plurality of different rubber materials. It is characterized by becoming.

  According to the first aspect of the present invention, the suction cup body is an elastic material having a relatively hard and large repulsive force, that is, preferably ethylene propylene rubber (EPDM), silicone rubber (Q), styrene butadiene rubber (SBR), vinyl chloride resin. On the other hand, the ring-shaped adsorbing member formed mainly of (PVC) or the like and attached substantially concentrically to the lower peripheral edge of the suction cup body is formed of a relatively soft and elastic rubber material (elastomer). When pressure is applied to the mounting surface, the soft ring-shaped adsorbing member is greatly compressed and deformed so that it adheres to the uneven mounting surface without any gaps and the suction cup body is elastically deformed. When it is later released from the pressure, it tends to lift away from the mounting surface due to its repulsive force, so the negative pressure formed inside the suction cup increases. It can exhibit a large suction force. The ring-shaped adsorbing member is preferably made of silicone rubber (Q), ethylene propylene rubber (EPDM), chloroprene rubber (CR), natural rubber (NR), etc., such as automobile dashboard, concrete, tile, frosted glass, etc. Since it follows the uneven surface well and keeps hermeticity, it can be suitably applied to a case where an in-vehicle device is attached to a dashboard of an automobile.

  According to the invention of claim 2, when the suction cup body is pressed against the mounting surface to be elastically deformed and the ring-shaped adsorption member is compressed and brought into close contact with the mounting surface, the air inside the suction cup smoothly flows to the outside through the exhaust port. Since it is discharged, excessive force other than the force in the thickness direction does not act on the soft ring-shaped suction member, and negative pressure is formed inside the suction cup without deforming the ring-shaped suction member in the lateral direction. Easy to do. The valve means provided at the exhaust port is preferably made of a soft rubber material such as silicone rubber (Q), nitrile rubber (NBR), fluorine rubber (FKM), and allows exhaust but prevents intake. Since it acts as a check valve, the negative pressure formed inside the suction cup can be maintained.

  According to the third aspect of the present invention, on the auxiliary mounting ring fixed so as to provide an exhaust passage communicating with the exhaust port on the suction cup body, the auxiliary mounting ring is made of a material having excellent adhesion to each other. Since the on-off valve is provided, the on-off valve can be in close contact with the mounting auxiliary ring to close the exhaust passage in an airtight manner, and the state is stably maintained, so that the negative pressure formed inside the suction cup is reduced. It can last for a long time. As a preferred example, both the auxiliary mounting ring and the on-off valve are made of soft silicone rubber.

  According to the fourth aspect of the present invention, the air suction passage is provided to the non-adhered portion by partially joining the ring-shaped adsorption member concentrically to the peripheral surface of the lower surface of the suction cup body. When the ring-shaped adsorbing member is compressed and pressed into contact with the mounting surface, the air inside the suction cup is smoothly exhausted through this air passage, and it is easy to form a negative pressure inside the suction cup. It becomes. When a suction state in which a negative pressure is formed inside the suction cup is obtained in this way, the upper surface of the ring-like suction member, including the non-adhesive portion, is in close contact with the lower peripheral edge of the suction cup body. Therefore, the non-bonded portion does not work as an intake passage, and the negative pressure formed inside the suction cup is maintained. In this case, it is also an important factor that the ring-shaped adsorbing member is a soft rubber material in order to sufficiently adhere and fulfill the role of a valve. According to the present invention, there is an effect that substantially the same function as the check valve structure can be provided without using any special valve means.

  According to the fifth aspect of the present invention, the ring-shaped suction member is attached in a state of being fitted in the concave groove formed on the lower peripheral edge of the suction cup body. Regulating deformation in the direction can be concentrated in the thickness direction, and the pressed force can be effectively transmitted to the mounting surface. In addition, especially in the case of in-vehicle use, since the lateral strength is ensured by suppressing the deformation at the time of rolling due to the traveling of the automobile, it is particularly great when used as a suction cup device in an in-vehicle device mounting device such as a portable navigation device. Demonstrate the effect.

  According to the sixth aspect of the invention, since the outer portions of the suction cup body and the ring-shaped suction member are substantially surrounded by the cover, the outer peripheral edge of the ring-shaped suction member sucked on the mounting surface is wound. It prevents the adsorption force from being lost due to an unexpected external force applied. Further, if the cover is also used as a part of the in-vehicle device attachment device, etc., when the device is attached to the dashboard, it is possible to have an integrated design in which the suction cup device cannot be seen from the outside while ensuring the safety by the cover.

  According to the invention of claim 7, since at least a part of the peripheral edge portion of the cover is cut out, when removing the suction cup device in the suction state from the mounting surface, a tool such as a fingertip or a screwdriver is provided in the cutout portion. The negative pressure inside the suction cup can be eliminated by raising the outer peripheral edge of the ring-shaped suction member by inserting the tip of the suction cup. The removal operation can be easily performed.

  According to the invention which concerns on Claim 8, when the space | interval of a cover and a suction cup main body becomes narrow by pressing a suction cup apparatus to an attachment surface, the spring member provided between these will be in the compressed state, and the suction cup main body Since a spring force in a direction to lift the central portion with the suction cup peripheral edge as a fulcrum is applied, the negative pressure inside the suction cup can be increased and the suction force can be increased to obtain a more stable suction state. The spring member can be of a shape generally called a disc spring. More specifically, in a spring material such as stainless steel that is formed in a generally inverted dish shape or substantially inverted saddle shape, a plurality of radial slits are formed at intervals from the outer peripheral edge toward the center. A substantially umbrella-shaped one can be used, and a coil-shaped spring may be disposed between the cover and the suction cup body to form a spring member. In the suction cup device, when the suction cup main body is elastically deformed and released from the pressure, the negative pressure inside the suction cup increases and exerts an adsorption force by trying to lift away from the mounting surface by its own repulsive force. However, according to this invention, in addition to the repulsive force due to the material of the suction cup body, the spring force by the spring member increases the negative pressure, so that the suction force is further increased and the suction state is maintained for a long period of time. Even if a so-called sag occurs as a result of a reduction in the repulsive force of the suction cup body due to the compression set, it is possible to maintain the suction force.

  According to the ninth aspect of the invention, since the ring-shaped adsorbing member is formed from a soft rubber material having a rubber hardness of A5 to A15 according to JIS-K6253, when pressure is applied from above, it is adsorbed to the mounting surface. In addition, the ring-shaped adsorbing member is greatly compressed and deformed so as to be closely attached to the mounting surface, and when the suction cup body is elastically deformed and released from the pressure, it tends to lift in a direction away from the mounting surface by its own repulsive force. Therefore, the negative pressure formed inside the suction cup increases, and a large adsorption force can be exhibited. Such a soft rubber material does not cause a problem that is difficult to handle unlike a gel-like material having strong adhesiveness. In this case, the suction cup body only needs to be able to maintain a repulsive force by elasticity, and the hardness is not particularly limited. The ring-shaped adsorbing member formed from such a soft rubber material keeps the airtightness by following the unevenness of automobile dashboards, concrete, tiles, polished glass, etc. It can be suitably applied to the case of attachment.

  According to the invention of claim 10, since the ring-shaped adsorbing member is formed by laminating a plurality of rubber materials and joining them in a layered manner, it is possible to exert an advantage by making the physical properties of the composite material compatible. For example, when a rubber material such as silicone is softly crosslinked such as rubber hardness A5 to A10, the surface tends to be oily. There is a possibility that bleeding (bleeding) becomes noticeable and shifts to a non-adsorbed material (mounting surface). Therefore, while forming a ring-shaped adsorbing member using such a soft rubber material, a barrier layer made of another rubber material with a relatively small exudation of oil or the like is provided on the back surface (surface adsorbing to the mounting surface) side. It is laminated thinly to cover the oily surface and at the same time prevent composition transfer from the soft rubber material. Instead of laminating a sheet-like soft rubber material on the back side, the barrier layer may be formed by a coating process. Since these barrier layers are formed thin, even if the hardness is high to some extent, the followability to the uneven surface due to the softness of the soft ring-shaped adsorption member is sufficiently ensured even through the barrier layer. As a material for the barrier layer, a rubber material with little compositional bleeding and less possibility of transfer is suitable. Silicone rubber (Q), chloroprene rubber (CR), nitrile rubber (NBR), ethylene propylene rubber (EPDM) It is preferable to use urethane rubber (UR) or the like. Further, since the degree of the component exudation varies greatly depending on the hardness, the material forming the layers may be the same material.

It is the bottom view (b) of the suction cup apparatus by one Embodiment (Example 1) of this invention, and sectional drawing (a) by the AA cutting line of the same figure. It is sectional drawing which shows the state (a) before adsorption | suction of this suction cup apparatus, and an adsorption state (b). It is the bottom view (b) of the suction cup apparatus by other embodiment (Example 2) of this invention, and sectional drawing (a) by the BB cut line of the same figure. It is sectional drawing which shows the state (a) before adsorption | suction of this suction cup apparatus, and an adsorption state (b). It is the bottom view (b) of the suction cup apparatus by further another embodiment (Example 3) of this invention, and sectional drawing (a) by the CC cut line of the same figure. It is sectional drawing which shows the adsorption | suction state of this suction cup apparatus. It is sectional drawing of the suction cup apparatus by further another embodiment (Example 4) of this invention. It is a perspective view of the state which removed the cover from this suction cup apparatus. It is a side view of the car navigation holder by further another embodiment (Example 5) of this invention. It is principal part sectional drawing of this car navigation holder. It is a perspective view which shows the notch part of the cover used for this car navigation holder. It is principal part sectional drawing which shows the state which attached this car navigation holder to the automobile dashboard. It is a perspective view which shows the ring-shaped adsorption member of the suction cup apparatus by further another embodiment (Example 6) of this invention.

  Hereinafter, suction cup devices according to embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows an embodiment according to the basic form of a suction cup device according to the present invention, a suction cup body 1 formed in a substantially inverted dish shape, and a substantially ring shape attached substantially concentrically to the lower peripheral edge of the suction cup body 1. And the adsorbing member 2. In this embodiment, the peripheral edge of the lower surface of the suction cup body 1 is projected downward to form a flange 3, and the ring-shaped suction member 2 is fitted in the flange 3. The ring-shaped adsorbing member 2 is bonded to the entire surface in a state where the ring-shaped adsorbing member 2 is in close contact with the peripheral surface of the lower surface of the suction cup body 1 with no gap.

  Further, the suction cup body 1 has a mounting portion 4 protruding in a cylindrical shape upward from the center of the upper surface, and a device (for example, a portable navigation device) to be mounted using the suction cup device is attached to the mounting portion 4. It can be installed. For this reason, mounting screws are cut on the outer periphery and / or inner periphery of the mounting portion 4 (not shown).

  The material constituting the suction cup body 1 has a certain shape-retaining property without being excessively soft while having elasticity enough to deform the original inverted dish shape into a substantially flat plate shape when a load is applied from above. It is required to have rigidity and strength. From this viewpoint, an elastomer having a rubber hardness of about A60 to A80, particularly around A70, is optimal according to JIS-K6253, and ethylene propylene rubber (EPDM) when used in a normal temperature range. It can be formed of thermoplastic elastomer (rubber material) such as styrene butadiene rubber (SBR) or vinyl chloride resin (PVC). Also, when it is expected to be used at high temperatures, such as for automotive use, select a heat-resistant elastomer such as silicone rubber (Q), chloroprene rubber (CR), ethylene propylene rubber (EPDM), nitrile rubber (NBR), etc. It is preferable to do.

  On the other hand, since the ring-shaped adsorption member 2 is required to be deformed and adhered to the concavo-convex surface in a follow-up manner, it needs to be composed of a softer material than the material constituting the suction cup body 1, It is necessary to provide airtightness in order to prevent air flow inside and outside the suction cup when it is in close contact with the mounting surface. As materials satisfying these required performances, silicone rubber (Q), ethylene propylene rubber (EPDM), chloroprene rubber (CR), natural rubber (NR), etc., whose rubber hardness according to JIS-K6253 is A5 to A15 are selected. The ring-shaped adsorption member 2 can be formed. When it is expected to be used at high temperatures, such as for in-vehicle use, it is preferable to use a material that is difficult to be deformed among thermosetting elastomers, particularly in a high temperature region. Silicone rubber (Q), chloroprene rubber (CR), ethylene propylene rubber (EPDM), nitrile rubber (NBR), etc. are the most suitable materials. In order to form these materials in a ring shape, injection molding using a mold (injection molding) may be used. However, if a flat molded body is punched into a ring shape using cutting or a Thomson cutter, etc. It can be manufactured at low cost.

  The method for adhering the ring-shaped adsorbing member 2 to the suction cup body 1 is not particularly limited, and an adhesive having good adhesiveness can be selected and used according to both materials. Further, the ring-shaped adsorption member 2 can be integrally formed simultaneously with the formation of the suction cup body 1 by using a technique such as double injection in the mold injection molding. Furthermore, a method of simultaneously bonding the ring-shaped adsorption member in the process of cross-linking the suction cup body 1 may be employed.

  The usage and operation of this suction cup device will be described with reference to FIG. FIG. 2A shows a state in which the suction cup device is placed on the mounting surface 5. In this state, the ring-shaped suction member 2 is not in close contact with the mounting surface 5, and air flows between the suction cup inside 6 and the outside. Is not shut off, there is no air pressure difference inside and outside the suction cup. In addition, when this suction cup device is in a normal state, the ring-shaped suction member 2 is inclined according to the inclination of the suction cup body 1, so that it is grounded to the mounting surface 5 only on the outer peripheral side but not on the inner peripheral side. .

  When the suction cup device is pressed by hand as indicated by an arrow from this state, the suction cup body 1 is elastically deformed into a substantially flat plate shape, and the ring-shaped suction member 2 is compressed and closely attached to the mounting surface 5 as shown in FIG. It will be in the state of b). In the process of shifting from FIG. 2A to FIG. 2B, the air inside the suction cup 6 is discharged to the outside through the gap between the ring-shaped adsorption member 2 and the mounting surface 5. When the load is released by releasing the hand in the state of FIG. 2 (b), the suction cup main body 1 attempts to return to its original substantially inverted dish shape, and the negative pressure inside the suction cup 6 further increases, thereby exerting a strong suction force. Even if the mounting surface 5 is an uneven surface as shown in the figure, the ring-shaped adsorption member 2 formed of a soft material closely follows the unevenness of the mounting surface 5 and maintains the negative pressure inside the suction cup 6. Adsorption power can be exhibited continuously. In the state shown in FIG. 2B, the ring-shaped adsorption member 2 is compressed and deformed in accordance with the load applied when it is pressed, and the thickness decreases. Maintains a thickness that is equivalent to or slightly larger than that.

  When removing the suction cup device 1 in the suction state shown in FIG. 2 (b) from the mounting surface 5, if the outside air is introduced into the suction cup interior 6 by lifting up the flange 3 of the suction cup body 1, the difference between the internal and external air pressures is increased. The suction force is lost and the suction cup device 1 can be removed. In this case, in order to prevent the suction force of the suction cups from being lost by inadvertently raising the flange 3, it is safe to attach a cover that covers the entire suction cups (see the cover 10 of Example 4 described later). thing).

  FIG. 3 shows a suction cup device according to a modification of the first embodiment, in which an exhaust port 7 penetrating the top of the suction cup body 1 is provided and a check valve 8 is provided on the exhaust port 7. The configuration is the same as that of the first embodiment except that the first embodiment is different from the first embodiment. Therefore, the same members as those of the suction cup device of the first embodiment are indicated by the same reference numerals, and the configuration, shape, material, and the like thereof are also the same as those of the first embodiment, and thus description thereof is omitted.

  In this embodiment, the basic suction principle or action as the suction cup device is the same as that of the first embodiment, but exhaust from the suction cup inside 6 when the suction cup device is pressed against the mounting surface 5, in other words, in the suction cup inside 6. It has an exhaust valve structure that can form negative pressure more smoothly. In the first embodiment, as described above, the air inside the suction cup 6 is discharged to the outside through the gap between the ring-shaped suction member 2 and the mounting surface 5 by pressing the suction cup device, and then the elastic restoration of the suction cup body 1 is performed thereafter. The suction force is exerted by forming a negative pressure inside the suction cup 6 due to the force, but when the suction cup device is pressed, the ring-like suction member 2 comes into close contact with the mounting surface 5 at a certain point, so that further pressure is applied thereafter. Even in this case, the exhaust from the suction cup 6 may not be smoothly performed. However, according to this embodiment, since the exhaust port 7 penetrating the top of the suction cup body 1 is provided, exhaust is smoothly performed through the exhaust port 7.

  That is, when the suction cup device placed on the mounting surface 5 is pressed by hand as indicated by an arrow, the suction cup body 1 is elastically deformed into a substantially flat plate shape, and the ring-shaped suction member 2 is compressed and deformed, so that the space volume inside the suction cup 6 is increased. Gradually decreases, and the air inside the suction cup 6 is discharged to the outside through the exhaust port 7 of the suction cup body 1. At this time, the check valve 8 is opened as shown in FIG. By smoothly exhausting in this way, the ring-shaped adsorption member 2 is brought into close contact with the mounting surface 5 (FIG. 4 (b)), and then the pressure is released, so that the elastic shape of the suction cup body 1 is achieved. Even if the negative pressure inside the suction cup 6 is increased through the restoring force and the mounting surface 5 has irregularities, a strong suction force is exhibited. Then, after the negative pressure is formed in the suction cup inside 6 in this way, the check valve 8 does not allow air inflow from the outside to the inside of the suction cup, so this negative pressure is maintained and the adsorption action is continued. Can do.

  In this embodiment, when the suction cup device 1 is removed from the suction state shown in FIG. 4B, the flange 3 of the suction cup body 1 is lifted with a finger as described in the first embodiment, and the check valve 8 Lifting with a finger can also eliminate the air pressure difference between the inside and outside and lose the adsorption power.

  As the check valve 8, similarly to the constituent material of the ring-shaped adsorption member 2, silicone rubber (Q), chloroprene rubber (CR), styrene butadiene rubber (SBR), whose rubber hardness according to JIS-K6253 is A5 to A10, Nitrile rubber (NBR) thermoplastic rubber (TPR) or thermoplastic elastomer can be preferably used. Such a soft rubber material is in a state where it partially enters (sinks) the exhaust port 7 due to the negative pressure formed in the suction cup 6 in the adsorbed state of FIG. Since it is sealed, the negative pressure inside the suction cup 6 is effectively maintained. In particular, silicone rubber tends to ooze out oil as the softness increases. However, since this oil helps to block air in the sealed portion of the valve, it is suitable as a material for the check valve 8. is there.

  In this embodiment, the exhaust port 7 is formed at the top of the suction cup body 1. However, the location where the exhaust port 7 is formed is not limited as long as the above-described exhaust and sealing plugs can be effectively realized. However, a plurality of them can be provided as necessary. Further, instead of the check valve 8 made of a soft material as described above, a plug member or other optional member capable of sealing the exhaust port 7 may be used.

  FIG. 5 shows a suction cup device according to a modification of the first embodiment. In the first embodiment, the upper surface of the ring-shaped suction member 2 is replaced with the entire lower surface of the suction cup body 1 instead of the ring-shaped suction member. The difference is that the outer peripheral edge of the upper surface of the member 2 is partially or intermittently joined to the lower peripheral edge of the suction cup body 1 so that the air inside the suction cup 6 can be discharged to the outside through the non-joined part. . In FIG. 5, the joint portion between the upper surface of the ring-shaped adsorption member 2 and the lower surface of the suction cup body 1 is hatched and indicated by reference numeral 2a, and the non-joint portion is indicated by reference numeral 2b. Further, in order to smoothly exhaust air from the suction cup interior 6, the lower peripheral edge flange 3 of the suction cup body 1 is not provided in this embodiment. Except for these differences, this embodiment has the same configuration as that of the first embodiment. Therefore, the same members as those of the suction cup device of the first embodiment are indicated by the same reference numerals, and the configuration, shape, material, etc. Since this is also in common with the first embodiment, a description thereof will be omitted.

  In this embodiment, the basic suction principle or action as the suction cup device is the same as that of the first embodiment, but exhaust from the suction cup inside 6 when the suction cup device is pressed against the mounting surface 5, in other words, in the suction cup inside 6. It has a structure that can form negative pressure more smoothly. That is, similar to the second embodiment, the exhaust valve structure has an additional function or advantage. When the suction cup device is placed on the mounting surface 5 and pressed by hand, the suction cup main body 1 and the ring-shaped suction are provided. As the member 2 is deformed, the space volume inside the suction cup 6 gradually decreases, and the air inside the suction cup 6 is smoothly discharged to the outside through the non-joint portion 2b between the suction cup body 1 and the ring-shaped suction member 2. Is done. Therefore, even if the mounting surface 5 has irregularities, a strong adsorption force is exhibited. When the suction state as shown in FIG. 6 is obtained in this way, the ring-like suction member 2 is compressed and comes into close contact with the lower surface of the suction cup body 1, so that the non-joining portion 2b is an air passage. The negative pressure formed in the suction cup interior 6 is maintained, and the adsorption action is continuously exhibited. As described above, when the ring-like adsorbing member 2 is made of silicone rubber having a rubber hardness A5 to 10 according to JIS-K6253, the surface is in an oily state. Since the passage is completely blocked, this is a particularly preferred embodiment.

  FIGS. 7 and 8 show a suction cup device according to a modification of the second embodiment having an exhaust valve structure. A particularly significant difference is that a spring plate 9 and a cover 10 are provided. Further, the shape of the suction cup body 1 is also slightly different. In this embodiment, the main part 1a formed relatively thin and flat so as to be easily elastically deformed when subjected to a load from above, and the thickened body. The ring-shaped adsorbing member 2 is fitted and bonded to a concave groove 1c provided in a ring on the lower surface (inside the flange 3) of the outer peripheral portion 1b. The ring-like adsorbing member 2 formed of a soft material is not only easily contracted in the thickness direction but also easily deformed so as to expand in the lateral direction. The deformation at the time of compression can be concentrated exclusively in the thickness direction. In addition, particularly in the case of in-vehicle use, deformation at the time of rolling accompanying driving of the vehicle is suppressed to ensure the strength in the lateral direction, so that the installation state of the in-vehicle device such as PND can be stabilized.

  The cover 10 is a substantially inverted bowl-shaped member having a size sufficient to enclose the suction cup body 1 and the ring-shaped suction member 2 as a whole, and a relatively strong plastic material such as ABS resin or polypropylene resin (PP). Formed from. The cover 10 surrounds and protects the ring-shaped suction member 2 that is in close contact with the mounting surface 5 in a compressed state, and plays a role of preventing the suction force from being lost due to an unexpected external force. The cover 10 includes a mounting cylinder portion 10a that protrudes downward from the top, and an internal screw 11a of the mounting cylinder portion 11 that protrudes upward is embedded and fixed in the suction cup body 1 with a female screw (not shown) formed inside thereof. It can be detachably attached by being screwed onto. The top part of the cover 10 is opened, and the lower end outer peripheral screw (not indicated) of the suction cup mounting shaft 19 inserted into the opening 10b is screwed into the inner peripheral screw 11b of the mounting cylinder part 11, thereby the predetermined suction by the suction cup device. A vehicle-mounted device or other member (not shown) such as a PND to be attached to the attachment surface 5 is detachably attached to the suction cup device. As a matter of course, the suction cup mounting shaft 19 is provided at the lower end of an in-vehicle device or the like. Even in the state where the in-vehicle device or the like is attached in this way, when the suction cup device is pressed against the mounting surface 5, the opening / closing valve 8 b opens as indicated by the phantom line, and the air inside the suction cup is released from the exhaust port 7. An exhaust passage for escape to the outside is secured.

  As is apparent from FIG. 8, the spring plate 9 is generally called a disc spring formed of a spring material such as stainless steel in a generally inverted plate shape or substantially inverted bowl shape. 11, a plurality of radial slits 9b are formed at equal intervals from the outer peripheral edge toward the center, and has a substantially umbrella shape. The spring plate 9 is disposed in a free state between the spring plate 9 and the cover 10 in a state where the outer peripheral edge is placed on the outer peripheral portion 1b of the suction cup body 1, and when the material is compressed and deformed by the formation of the slit 9b, Apply spring force to return to shape.

  This embodiment exhibits substantially the same operation as that of the second embodiment. That is, when the suction cup device is placed on the mounting surface 5 and pressed by hand, the suction cup body 1 is elastically deformed into a substantially flat plate shape or a warped state in the opposite direction (shown by phantom lines in FIG. 7) and the spring plate 9 is also Since it is compressed, the ring-shaped adsorbing member 2 is also pressed and compressed and deformed to be in close contact with the mounting surface 5. If it continues pushing in this state, the space volume of the suction cup inside 6 will become small gradually, and the air of the suction cup inside 6 will be discharged | emitted outside via the exhaust port 7 of the suction cup main body 1. FIG. At this time, the check valve 8 is opened and does not hinder the exhaust. By smoothly exhausting in this way, the ring-shaped adsorbing member 2 comes into close contact with the mounting surface 5, and then the pressure is released so that the inside of the suction cup is released via the elastic shape restoring force of the suction cup body 1. Even when the negative pressure of 6 is increased and the mounting surface 5 has irregularities, a strong suction force is exhibited. Then, after the negative pressure is formed in the suction cup inside 6 in this way, the check valve 8 does not allow air inflow from the outside to the inside of the suction cup, so this negative pressure is maintained and the adsorption action is continued. Can do. In this embodiment, the spring plate 9 disposed between the suction cup body 1 and the cover 10 is compressed by narrowing the distance therebetween, and the central portion 1a of the suction cup body 1 is supported by the suction cup peripheral edge portion 1b. Since the spring force in the direction to be lifted is applied, the negative pressure formed in the suction cup interior 6 is further increased, the suction force is further increased, and the repulsive force due to the compressive stress strain of the suction cup body 1 after a long period of use. Even when a decrease (sagging phenomenon) occurs, a decrease in adsorption force is prevented.

  Note that the check valve 8 in this embodiment uses two soft silicone rubbers stacked on top of each other so as to enhance the airtightness without hindering the operation as a valve. That is, an attachment auxiliary ring 8a formed from a soft silicone rubber plate so as to have a hole (not shown) having substantially the same diameter as the exhaust port 7 of the suction cup body 1 is arranged so that the hole is substantially aligned with the exhaust port 7. It has a two-valve structure in which an on-off valve 8b made of a soft silicone rubber plate having substantially the same outer shape as that of the auxiliary mounting ring 8a is superposed on the suction cup body 1 with an adhesive or the like. With such a two-valve structure, the affinity of the material is higher than when one valve 8 (for example, made of silicone rubber) is closely attached to the suction cup body 1 made of a different material (for example, thermoplastic elastomer). Since the opening / closing valve 8b is brought into close contact with the mounting auxiliary ring 8a, the exhaust passage 7 can be closed in an airtight manner, and the state is stably maintained. The negative pressure can be maintained for a long time. Even with such a two-valve structure, when the suction cup device is pressed against the mounting surface 5, the on-off valve 8 b opens as shown by the phantom line in FIG. 7 and exhausts the air inside the suction cup 6 through the exhaust port 7. It does not interfere with the action to do. When the on-off valve 8b is provided on the auxiliary mounting ring 8a, the on-off valve 8b is detached from the auxiliary mounting ring 8a by fixing a part of the outer periphery of the on-off valve 8b on the auxiliary mounting ring 8a with an adhesive or the like. It is preferable to provide a maximum opening when it is opened so that exhaust is efficiently performed. As already described in the second embodiment, the exhaust ports 7 are not limited to be formed as long as the above-described exhaust and sealing plug functions can be effectively realized. Can be provided.

  The embodiment shown in FIGS. 9 to 11 is configured as a car navigation holder 12 for attaching a portable navigation device (PND) to a dashboard of an automobile, and includes a car navigation mounting portion 20 for attaching the portable navigation device. The pedestal 30 is attached to the dashboard of the automobile as the mounting surface, and the connecting portion 40 is connected to the pedestal 30 for connecting the car navigation attachment 20.

  The car navigation attachment portion 20 is a detachable attachment of a PND (not shown) to be mounted on the vehicle by the car navigation holder 12, and a mounting surface 21 that supports the bottom surface of the PND and a backup surface that supports the back surface of the PND. 22. The mounting surface 21 and / or the backup surface 22 have a shape and size suitable for mounting the PND, and include a mechanism (not shown) for enabling the mounting and dismounting thereof. As the attachment / detachment mechanism, an arbitrary mechanism such as a mechanism that enables simple attachment / detachment by a slide member or the like can be employed in addition to screwing.

  The connecting portion 40 includes a joint arm 42 having a spherical rotary joint 41 at the lower end, a fixing plate 43 fixed to the upper end of the joint arm 42, and a nut 44 for fixing the joint arm 42 to the pedestal portion 3. Have The fixing plate 43 is fixed to the back surface of the car navigation mounting portion 20 by an arbitrary method such as a fixing tool such as a screw or welding. The nut 44 can be fixedly held by rotating the outer joint 36a of the mounting portion 36, which will be described later, and the rotary joint 41 accommodated in the mounting portion 36 can be held stationary by tightening the nut. The joint 41 is rotatable and swingable in the front / rear and left / right directions.

  The pedestal 30 includes a suction cup body 31, a ring-shaped suction member 32, a spring plate 33 formed in an umbrella shape, a substantially disc-shaped inner mounting plate 34, a cover 35, and a substantially cylindrical mounting portion 36. And a mounting shaft 37, a check valve 38, and a mounting screw 39. The suction cup main body 31 and the ring-shaped suction member 32 substantially correspond to the suction cup main body 1 and the ring-shaped suction member 2 in the first embodiment, and the spring plate 33 and the cover 35 are substantially equivalent to the spring plate 9 in the fourth embodiment. And corresponds to the cover 10. The check valve 38 substantially corresponds to the check valve 8 in the fourth embodiment, and has a two-valve structure including an attachment auxiliary ring 38a and an on-off valve 38b.

  The main portion 31a of the suction cup body 31 is formed to be relatively flat and easily deformed when subjected to a load from above, but the outer peripheral portion 31b is thickened and has a concave surface on its lower surface. A groove 31c is provided in a ring, and a ring-shaped adsorption member 32 is fitted in the concave groove 31c. The ring-shaped adsorption member 32 formed of a soft material is not only easily contracted in the thickness direction but also easily deformed so as to expand in the lateral direction. The deformation at the time of compression can be concentrated exclusively in the thickness direction. Further, in particular, in the case of in-vehicle use as in this embodiment, since the lateral strength is ensured by suppressing deformation at the time of rolling due to traveling of the vehicle, the installation state of in-vehicle devices such as PND can be stabilized. .

  An exhaust port 31d is opened at the center of the suction cup main body 31a, and a base portion of a substantially cylindrical mounting shaft 37 is embedded and fixed so as to surround the exhaust port 31d. The mounting shaft 37 protrudes upward from the suction cup main body 31a, passes through the center holes of the spring plate 33 and the inner mounting plate 34, and protrudes upward. In the mounting shaft 37, a mounting auxiliary ring 38a made of a soft silicone rubber plate is bonded and fixed so as to be substantially aligned with the exhaust port 31d of the suction cup body 31, and only a part of the outer periphery is bonded thereto. An open / close valve 38b made of a soft silicone rubber plate is provided in a fixed state. As described in detail in the fourth embodiment, since the on-off valve 38b is formed of the same material as the auxiliary mounting ring 38a, the on-off valve 38b may be in close contact with the auxiliary mounting ring 38a to close the exhaust port 31d in an airtight manner. And the state is stably maintained. Therefore, the negative pressure formed in the suction cup interior 6 (FIG. 12) can be maintained for a long time.

  The spring plate 33 is substantially the same as the spring plate 9 used in the suction cup device of the fourth embodiment. The spring plate 33 is made of a spring material such as stainless steel as a whole in a substantially inverted plate shape or a substantially inverted bowl shape, and is inserted through the mounting shaft 37. And a plurality of radial slits (slits 9b of the spring plate 9) are formed at equal intervals from the outer peripheral edge toward the center and have a substantially umbrella shape. ing. The spring plate 33 is disposed in a free state between the outer peripheral edge of the spring plate 33 and the inner mounting plate 34 in a state where the outer peripheral edge is placed on the outer peripheral portion 31b of the suction cup main body 31. A spring force is applied to return to the shape.

  The inner attachment plate 34 is detachably attached to the cover 35 with an arbitrary number of attachment screws 39 with the upper end of the attachment shaft 37 inserted through the center hole 34a. The inner mounting plate 34 may be assembled to the suction cup body 31 by forming a male screw on the upper end of the mounting shaft 37 and screwing a nut onto the male screw. In any case, when the pedestal portion 30 is assembled, the spring plate 33 is interposed between the inner mounting plate 34 and the suction cup body 31.

  The cover 35 is formed in a substantially inverted saddle shape whose upper surface is substantially closed, and the mounting portion 36 described above is formed on a part of the upper surface as having a substantially cylindrical shape. The inner surface and the bottom surface of the attachment portion 36 have a spherical shape corresponding to the curvature of the spherical rotary joint 41 described above, and accommodate the rotary joint 41 so as to be rotatable and swingable. The lower peripheral edge of the cover 35 extends horizontally outward to form a flange 35a, which prevents the suction force from being lost due to inadvertently touching the suction cup body 31 and the outer edge portion rising and air entering. The car navigation holder 12 is partly cut out at least at one place, and when the car navigation holder 12 is removed from the state where it is adsorbed to the dashboard, it is easy to insert a finger from the notch 35b to facilitate the removal operation. (FIG. 11). Further, a nut portion 35c is formed on the lower surface of the central portion of the cover 35 so as to protrude downward corresponding to the position and number of the mounting screws 39 described above, and is inserted through a screw insertion hole (not indicated) of the inner mounting plate 34. Then, by attaching the mounting screw 39 protruding upward, it can be detachably attached to the inner mounting plate 34.

  Both the cover 35 and the inner mounting plate 34 can be formed into a predetermined shape using a hard plastic or the like as a material. In this embodiment, these are assembled as separate members with mounting screws 39, but these are integrally molded. You may do it. Further, the attachment portion 36 may be integrally formed with the cover 35.

  FIG. 12 shows a state in which the car navigation holder 12 configured as described above is attached to the attachment surface 5 (automobile dashboard). When the car navigation holder 12 is placed on the mounting surface 5 and pressed by hand, the main portion 31a of the suction cup body 31 is elastically deformed into a recessed state, and the ring-shaped adsorbing member 2 is compressed and deformed to be in close contact with the mounting surface 5, The state shown in FIG. 12 is obtained. In this process, the air inside the suction cup 6 is smoothly discharged to the outside through the center hole of the auxiliary mounting ring 38a and the gap formed by the opened valve 38b. When the hand is released in the state of FIG. 12 and the load is released, the suction cup body 31 tries to return to its original substantially inverted dish shape by the elastic repulsive force of the material, so the negative pressure inside the suction cup 6 further increases, Demonstrates strong adsorption power. The dashboard of an automobile is generally made of plastic such as polypropylene or a material that does not allow air to pass through, such as synthetic leather. The surface of the dashboard often has fine irregularities called wrinkles to prevent light reflection. Even in such an uneven surface, the ring-shaped suction member 32 formed of a soft material closely follows the unevenness of the mounting surface 5 and maintains the negative pressure inside the suction cup 6, so that the suction force is continuously maintained. It can be demonstrated. This adsorption action is the same as that already described for the first embodiment. In addition, in this embodiment, the spring plate 33 disposed between the suction cup main body 31 and the horizontal mounting plate 34 is in a compressed state due to the narrowing of the interval therebetween, and the suction cup main body 31 and the ring-shaped suction member 32 are compressed. Therefore, the negative pressure formed in the suction cup interior 6 can be further increased, and a strong suction force can be maintained for a long time. In addition, in this embodiment, the same double valve structure as described above for Embodiment 4 is adopted for the check valve, so that the negative pressure formed in the suction cup 6 is more effectively maintained for a long time. Prominently demonstrated.

  When the car navigation holder 12 in the suction state of FIG. 12 is removed from the mounting surface 5, outside air is blown into the suction cup interior 6 by raising the outer peripheral edge of the ring-like suction member 32 in the compressed state with a fingertip or the tip of a driver. If introduced, the air pressure difference between the inside and outside is eliminated, the attraction force is lost, and the car navigation holder 12 can be removed. The notch 35b formed in at least a part of the flange 35a of the cover 35 facilitates the removal operation of the car navigation holder 12 even when it is attached to the dashboard of the cover 35 with a slight gap.

  Since the installation of the car navigation holder 12 does not require a mirror-like base plate, there is no unsightly appearance due to the base plate remaining on the mounting surface 5 (dashboard) when removed. It also eliminates the possibility of damaging the dashboard when the base plate is no longer needed and peeled off. Furthermore, since a fixing tool such as a screw is not required, a screw mark is not left on the dashboard. In the state where the car navigation holder 12 is removed, there is no trace of the car navigation holder 12 installed so far.

  In addition, when using the suction cup device of the present invention as a device for detachably installing an in-vehicle device such as a portable navigation device on a dashboard of an automobile as in this embodiment, particularly when it is exposed to solar radiation in summer Since the interior of the vehicle may become a high temperature of 50 to 60 ° C. or higher, it is preferable to form the sucker body 31 with a material that does not heat soften even in such a high temperature state, that is, a heat resistant elastomer. . For the ring-shaped adsorbing member 32, it is preferable to use a material that is not easily deformed and deformed in a high temperature region among thermosetting elastomers, such as silicone rubber (Q), chloroprene rubber (CR), ethylene propylene rubber (EPDM), Nitrile rubber (NBR) is the most suitable material.

  In each of the embodiments described above, the ring-shaped adsorbing members 2 and 32 are shown as being formed from a single soft rubber material, but are not necessarily formed from a single material or a single member. There is no need, and a structure in which a plurality of rubber materials are laminated in layers may be used. FIG. 13 shows an example of such a ring-shaped adsorbing member. A barrier layer 2b made of chloroprene rubber having a thickness of about 2 mm is formed on the bottom surface of the main portion 2a made of ultra-soft (rubber hardness A5) made of silicone rubber having a thickness of about 5 mm. It has the structure which laminated | stacked. Such ultra-soft 5 mm thick silicone rubber has ideal softness and thickness to absorb the unevenness of the mounting surface 5, but it is adsorbed to the mounting surface 5 in a compressed state for a long time or under high temperature. Since the composition may bleed out and transfer to the mounting surface 5 and become dirty, chloroprene rubber with a thickness of about 2 mm on its bottom surface (independent air bubble airtight air cell is formed in a sponge shape. (A soft material) is applied with an adhesive or the like to form the barrier layer 2b, thereby preventing bleeding from the silicone rubber. Since the chloroprene rubber constituting the barrier layer 2b is also soft enough to absorb the unevenness of the mounting surface 5, even if it becomes a material of two layers, it keeps the softness and follows the uneven surface well, Since the close contact state can be made, the adsorption action is not hindered. The plurality of layers may be joined as a multilayer integral molding. Further, as another example, the oil oozes out as much as possible with a hardness of about 10 to 20 microns and a hardness of about A50 on the bottom surface of the ring-shaped adsorbing portion 22 of the ultra-soft (rubber hardness of about A5) silicone rubber with a thickness of about 5 mm. By forming the barrier layer 2b made of a small amount of silicone rubber in a state of being laminated in the course of cross-linking, the transition to the mounting surface 5 corresponding to the composition of the ring-shaped adsorbing member 22 is ensured while ensuring the tracking of the uneven surface. Is possible.

  Since the present invention can exert and maintain a strong adsorption force even on an uneven mounting surface such as an automobile dashboard, concrete, tile, and polished glass, it can be used for various applications. The industrial applicability is great. For example, it can be suitably used as a part of an in-vehicle device mounting device for detachably installing a portable navigation device, a mobile phone or other portable device on a dashboard of an automobile. Furthermore, the present invention can also be applied to an application as a suction disk for industrial robots used for assembling automobile parts.

DESCRIPTION OF SYMBOLS 1 Suction cup main body 1a Main part 1b Outer peripheral part 1c Groove 2 Ring-shaped adsorption member 2a Main part (silicone rubber)
2b Barrier layer (chloroprene rubber)
3 Flange 4 Mounting portion 5 Mounting surface 6 Suction cup inside 7 Exhaust port 8 Check valve 8a Mounting auxiliary ring 8b Open / close valve 9 Spring plate 9a Center hole 9b Slit 10 Cover 10a Mounting tube portion 11 Mounting tube portion 11a Outer screw 12 Car navigation holder 19 Suction cup mounting shaft 20 Car navigation mounting part (equipment mounting part)
21 Car navigation placement surface 22 Backup surface 30 Pedestal part 31 Suction cup body 31a Main part 31b Outer peripheral part 31c Groove 32 Ring-shaped adsorption member 33 Spring plate (spring member)
34 inner mounting plate 34a center hole 35 cover 35a flange 35b notch 35c nut portion 36 mounting portion 37 mounting shaft 37a pedestal portion 37b male screw portion 38 check valve 38a mounting auxiliary ring 38b on-off valve 39 mounting screw 40 connecting portion 41 rotary joint 42 Joint arm 43 Mounting plate 44 Nut

Claims (10)

A ring-shaped body formed from a first elastic material and a second elastic material that is softer than the first elastic material and formed in a substantially ring shape and attached substantially concentrically to the lower peripheral edge of the suction cup body A suction cup device comprising an adsorption member. Exhaust for pressing the suction cup body against the mounting surface and elastically deforming it, and compressing the ring-shaped adsorbing member and bringing it into close contact with the mounting surface to discharge the air inside the suction cup to the outside and form a negative pressure inside the suction cup 2. The valve according to claim 1, wherein a port is formed in the suction cup body, and a valve means is provided at the exhaust port to allow only the exhaust from the inside to the outside and prevent the intake from the outside to the inside. The suction cup device described. The valve means is mounted on the suction cup body so as to provide an exhaust passage that communicates with the exhaust port, and the exhaust passage can be closed airtightly in close contact with the attachment auxiliary ring. The suction cup device according to claim 2, further comprising an on-off valve provided. The ring-shaped adsorbing member is partially joined to the peripheral edge of the lower surface of the suction cup body, and the non-joined portion presses the suction cup body against the mounting surface to be elastically deformed and compresses the ring-shaped adsorption member to be in close contact with the mounting surface. 2. The suction cup device according to claim 1, wherein the suction cup device functions as an exhaust passage for discharging air inside the suction cup to the outside and forming a negative pressure inside the suction cup. The suction cup device according to any one of claims 1 to 4, wherein the ring-shaped suction member is fitted into a groove formed in a peripheral portion of a lower surface of the suction cup body. The suction cup device according to claim 1, further comprising a cover that substantially surrounds the suction cup body and the ring-shaped suction member. The suction cup device according to claim 6, wherein a notch portion is provided in at least a part of a peripheral edge portion of the cover. A spring member is disposed between the cover and the suction cup body, and the spring member is compressed when the distance between the cover and the suction cup body is reduced by pressing the suction cup device against the mounting surface and deforming. The suction cup device according to claim 6, wherein a spring force in a direction to lift the central portion of the suction cup body is applied while pressing the outer edge portion of the suction cup body. 9. The suction cup device according to claim 1, wherein the second elastic material constituting the ring-shaped adsorption member is an elastomer having a rubber hardness of A5 to A15 according to JIS-K6253. The suction cup device according to any one of claims 1 to 9, wherein the second elastic material constituting the ring-shaped adsorption member is formed by laminating a plurality of different rubber materials and joining them in layers.

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