JP2009287767A - Suction disk and method for increasing retention force of suction disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase retention force by improvement since returning force is weak in a good fitting material although a normal pressing suction disk comprises a cup shape section and an attachment part provided outside thereof by integrally forming soft resin, material is uniform, and material is selected for improving fitting to a contacted surface. <P>SOLUTION: An annular fin 1 of a shape cut off with a center part of the suction disk is formed and a column 2 slightly larger than a hole made by the cut-off is inserted in the hole 1a. When the suction disk is pressed to be a flat shape and is installed, stress from the annular fin 1 to return acts on the column 2, the thickness increases and hardness of a part near a center increases. By this reason, retention force of the suction disk is increased. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a pressing sucker. (Suction cup and suction cup are synonymous).

For suction cups, there are pressing suction cups, tension suction cups, and suction (deaeration) suction cups. For pressing suction cups, a bowl-shaped object is pressed against the surface to be sucked, and the force to return by the elasticity of the suction cups works. Then, a negative pressure state is created, and it is fixed so as to be sucked by a pressure difference between the negative pressure portion and the atmospheric pressure.
JP 11-344020 A JP2008-051296 JP2002-333841A. JP2007-040510. JP 2005-188733.

  An ordinary pressing sucker has a uniform material made of a soft resin, which is composed of a bowl-shaped portion and an attaching portion provided on the outside by integral molding. The material was selected to improve familiarity with the contacted surface. With familiar materials, the ability to return was weak, and for that reason the holding power was weak, so an increase in holding power was required.

  In order to solve the above-mentioned problem, an annular ridge (1) having a shape obtained by cutting out the central portion of the suction cup is made, and a cylinder (2) slightly larger than the hole is inserted into the hole (1a). Then, when it is pressed and mounted until it becomes flat, 1 is stressed from an annular ridge trying to return to the cylinder 2, and for the same reason, the thickness is increased in order from near the center, 3, and the center for the same reason As the hardness increases in the vicinity, the force to return increases. For that reason, the suction force of the suction cup is increased. (In terms of definition of terms, in the present invention, a cylinder and a disk or a disc are properly used depending on the aspect ratio, but they are explained and interpreted as a cylinder as the same term). (A combination of an annular bowl and a cylinder is also described as a suction cup in the present invention.)

  As a basic function, the suction cup's holding power is increased by making an annular bowl (1) with the center of the suction cup cut out and inserting a cylinder (2) slightly larger than the hole into the hole (1a). Is the main effect. Explaining in detail, inserting a cylinder slightly larger than the hole into a soft resin and pressing it until it becomes flat will increase the thickness near the base due to stress, and the material will become hard due to stress near the center, The force to restore (restoring force) increases by combining both the stress (force to return to the hole direction) and the stress (roundness) to return to the original shape by pressing the suction cup flatly. . These things increase the holding power of the suction cup. Although the details of the theory of hardening will be omitted, an easy-to-understand explanation is common to the fact that when a rubber cylinder is deformed by applying a force in the longitudinal direction, the resistance to deformation increases against the compression pressure from the lateral direction. This is the construction of a technical idea that, even though they are the same material, an internal stress is generated in a soft resin to change the physical properties of the material in an advantageous direction.

  In comparison with the conventional technology, a technology has been proposed to prevent air leakage through a material (soft silicone, resin elastomer, thickener, etc.) that is more familiar between the suction surface and the suction cup. Although it is a form of strengthening force, it is considered that it is different from increasing the degree of negative pressure. Although there are things that displace the central part by levers, screws, etc., as holding power reinforcement, it will be a different field because it becomes a pulling suction cup as usual. There was no technical idea to apply the stress in the pressing suction cup to use the change in the physical performance of the resin. In some cases, it is considered that the force to return by increasing the diameter of the center portion in proportion to the outer shape of the suction cup to ensure the return force. Of course, in the present invention, a hole is provided, a cylinder larger than the hole is inserted, and stress is thereby applied to further increase the holding force, thereby increasing the technical added value. * In Japanese Patent Application Laid-Open No. 2008-0512296, as another solution to the problem, a technical proposal to embed a spring or attach it to the outside is considered to function effectively, and the general concept is to make the suction cup stronger, and so on. However, since the solution means and the basic structure are completely different, both are considered to be the present invention. * Japanese Patent Laid-Open No. 11-344020 proposes enhancement of a suction cup with a two-stage structure, but since the solution means and the basic structure are completely different, it is considered that the present invention is both present.

  As variation characteristics, there is an effect that various variations can be made in addition to the characteristics of the basic performance. A wide variety of attachments for attachment to the suction cups can be prepared outside the cylinder to enable replacement. When making a conventional suction cup by injection molding, there is a certain limitation in the shape, and if it is manufactured separately, the degree of freedom is widened. As an example, an attachment for attachment to a suction cup as shown in FIG. 5 is assumed. Of course, it is assumed from FIG. As an actual example, it is easy to understand that when the double-sided suction cup shown in FIG. 5 (h) is made, the dimension of the middle part can be as close to 0 mm as possible (difficulty in integral molding). There is a great merit in that the parts for mounting can be directly attached to the suction cup. A work as a part can be performed by inserting a cylinder separately into a work for reducing the moment by bringing the load applied to the cylinder as close as possible to the attracted surface. A cylinder can be used as a permanent magnet, and various objects can be attached to the magnet. FIG. 6 is an example. FIG. 7 shows a reference example in which a suction cup with a container having a hollowed shape inside a cylinder is also possible. As described above, the main effect is an increase in holding force, but there is an effect that the variation can be made various based on it. Naturally, it is possible to change the cylinder with a single ring-shaped bowl, and this variation is one of the effects. There are several types of suction cup sizes (outer diameters). If the set hole diameter is constant, there are many variations on the outside of the inserted cylinder, regardless of the size of the ring-shaped flange. It can correspond to. Naturally, the use application spreads for the said reason. Conventionally, since it is manufactured integrally, the superiority in manufacturing can be understood as compared with the suction cups of various sizes (horizontal holes, coffin holes, horizontal grooves, both sides).

  As a manufacturing characteristic, the simplicity of the shape of the annular bag of the present invention can be improved in manufacturing the suction cup. Usually, it is manufactured by an injection method (injection molding), but since it has a simple shape, a hot press method is also possible. There is an effect that the cylinder can be used if it has a property that does not allow air to pass through such as metal and resin, and the dent amount is small with respect to pressure when it is mounted.

  The present invention will be described with reference to the drawings. In claim 1 and claim 2, as shown in FIG. 1, in the shape (1) having a hole (1a) of a predetermined size in the center of the suction cup, 105% to the hole (1a) of the annular ridge A cylinder with a diameter of about 118% is tightly attached (tightly attached). The maximum diameter of the cylinder is a condition that is not more than the elastic limit of the circular rod. The diameter of the hole should be about 1/3 to 1/5 of the outer diameter of the suction cup. The end face of the cylinder is flat on the inside, and the outside is selected depending on the mounting variation. The outer peripheral surface of the cylinder should be smooth so that the area of the inserted portion is smooth without any slip-off prevention mechanism and kept secret from the suction cup. The material of the cylinder is not particularly particular, but conditions that do not allow air to pass through are necessary. The material of the conventional suction cup is used for the material of the annular bowl. The method of rounding the circular ridge follows the conventional rounding method. In FIG. 1, (a) represents the state before the cylinder is inserted into the annular ridge and the relationship between the hole and the cylinder is represented, and (b) represents the state in which the cylinder is inserted into the annular ridge and the annular ridge is the root. In (c), which expresses that it becomes thicker in the vicinity, it expresses the state when the suction cup is pressed and attached, and it expresses that the thickness further increases near the base, so an enlarged view is attached. The increase in thickness is a little exaggerated. The suction cup of the present invention has an outer diameter of about 15 mm to 60 mm.

“Other embodiment 1”
The invention relating to claim 3 takes over claims 1 and 2, and all of the materials fixed by the permanent magnet are made possible by making the cylindrical material a permanent magnet. Of course, although there are limitations on the weight, size, etc., there are also those with large magnetic performance. If a thin object such as a sheet or paper is to be attached, it can be easily attached by applying paper and then placing an iron plate thereon. As an effect, the feature of simplicity shown in the example of use shown in FIG. * As a special case, when used for steel furniture, the suction force of the suction cup and the suction power of the magnet may be shown in synergistic force. Demonstrate the drag. The basic theory, which is a combination of the force that the cocoon is trying to return to the cocoon shape and the force that attracts the center by the magnet, is completely different. The force (1) that is attracted to the attracted surface by the magnetic force from the central part (in the circle), the force (2) that causes the force to be pressed against the attracted surface near the outer periphery of the kite, and the original kite is bowl-like Since the force (3) for pressing the atmospheric pressure due to the negative pressure region due to the force to become is synthesized, a synergistic adsorption force is exhibited. Details of force synthesis are omitted, but there is a force synthesis of the above (1), (2), and (3), and since a cylinder larger than the hole is inserted, there is a further increase in synergistic effect and force to return. Works effectively. In appearance, the cross-section of the ridge is shaped like an inverted U and deforms and straightens with time, and the feature is seen where the time is considerably long. Although it is a condition that the attracted surface is a magnetic reactant, it is not a simple addition effect. Conventionally proposed combinations of suction cups and magnets have an advantage in the present invention as described above.

“Other embodiment 2”
According to a fourth aspect of the present invention, a function as a container is added in a state where the inside of the cylinder is hollow. As an effect, it is possible to increase the length of the container by attaching the suction cup holding capacity in claims 1 and 2 and attach it to the vertical surface. 2 and 7 are shown as examples.

“Other embodiment 3”
In the fifth aspect, as shown in FIG. 4, it is slightly larger than the thick portion of the annular ridge to prevent peeling. As a condition for removing the suction cup, a small amount of air flows from between the suction surface and the suction cup and the negative pressure is cut off. One reason for this is that when an object is attached, a force is applied to the suction cup, and a moment is generated. The moment is W × L (force W, distance L from point D). This is the tensile stress at point A. Acts as a cause of air leakage. In particular, when there is unequal stress, it becomes easy to leak. Therefore, it is preferable to reduce the distance L as much as possible to reduce the tensile stress due to the moment. Therefore, it is ideal to attach the object as close as possible to the thickness of the suction cup. This is important when attaching a relatively heavy object. * Since the problem came out when actually installed, the solution will be explained. In the case of a cylinder with the same height as the ring collar body, when the ring collar is attached to the cylinder, the root of the ring collar against the shaft Distorted diagonally (common name: rampage or undulation), resulting in poor stability. Therefore, the distortion is absorbed by attaching an annular collar to the concave part of the middle part of the cylinder body. It is effective that the cylinder has a shape (hourglass shape) in which the diameter of both end faces of the cylinder is large and the diameter is small at the midpoint. This description is generally good in shape as shown in FIG. Although the details of the explanation will be omitted, as a result, it becomes a mechanism that presses from both ends of the cylinder by making a drum shape, so that it functions effectively when the cylinder is thinned. It is easy to attach the ring-shaped hook that the outer diameter is slightly larger than the part that hits the inside in the drum shape. Furthermore, if the cross-section of the ring-shaped hole is chamfered or bulged, there will be less rampage and better compatibility with the cylinder.

“Other embodiment 4”
In claim 6, the material of the cylinder is an elastic body, and the performance can ensure the basic function (increase the strength) if a diameter of 105% or more of the diameter of the hole of the annular collar is secured when the suction cup is attached. . (The elastic body is synonymous with the elastic body, but the term is defined in the present invention as a material that expands and contracts in a small amount even with rubber or the like). By making the cylinder with a resilient body, it is characterized in that confidentiality is maintained even if the cylinder is punched through a needle-like object. For example, a hook or a split pin can be used in post-installation, and a wire can be passed. Depending on the performance of the elastic body, it can be used as long as the space between the protruding body and the elastic body is kept secret by the elasticity (if the air does not enter the suction cup). You can tie it directly to the suction cups or fasten it directly with scissors. If a part of a concrete reference case is shown in the figure, it can be as shown in FIG. 9, FIG. 10, and FIG. If a cylinder is made into a drum shape, it is more stable and the range of use becomes wider. As the elastic body, there is a rubber or silicon rubber which is not particularly particular but does not allow air to pass through. Ordinary rubber cannot be used because of the large amount of air that passes through it, and soft vinyl chloride or the like may cause air leakage from the object that is inserted due to insufficient elasticity. * There is also a method in which the shape of the cylinder is a drum-shaped ring, and a hook is attached to the outside, and the elastic body is filled inside the ring.

“Other embodiment 5”
In Claim 8, the hole (2b) which penetrates a cylinder in Claim 6 is provided, and it is mounting | wearing, maintaining the secrecy between a cylinder and a stick | rod by inserting a stick | rod thicker than the diameter of this hole, For example, as shown in FIG. 12 (a), a through hole (2b) is provided in a cylinder of an elastic body, and a rod (4) having a diameter larger than the hole and inflated at the end can be inserted and attached. The method of inflating the end portion is not particular to FIG. 12, and FIG. 10 and FIG. 11 (y) do not represent the hole (2b), but are the same (the illustration is omitted because the hole is attached to the rod 4). Is an expression). As shown in FIG. 12 (b), it is possible to enlarge the hole and use it as a packing, and the merit is useful for the stability of the rod (correcting the tilt of the rod). Naturally, a suction cup with a magnet can be made by embedding a magnet in the hole (not shown). Since powerful magnets different from general magnet images (ferrite magnets, rubber magnets, etc.) are commercially available, there is considerable relaxation in performance. * Omit what to attach to the tip of the rod, but there are many different possibilities, so the range of use can be expanded. As long as it is a member that keeps the secret in the hole and is a member that does not fall out, the above is not concerned. For example, a ball chain can be inserted for attachment (not shown). Holes that are not used with multiple through-holes can be accommodated by inserting a plug. There are also other combinations with magnets as described above. * It is noted that construction can be performed at the time of installation, and the conventional pressing suction cup renews the basic concept of installation compared to the form in which the shaft is attached to it. If you want to attach directly when you put out the shaft, the shaft often becomes an obstacle, for example, you need to attach something from the shaft to attach a piece of paper and attach it outside the paper, this invention Then, the side is relaxed and it becomes a simple part.

  If the rod (4) is further replaced with a pipe in the above description, it is possible to add a function of providing a negative pressure tank and connecting it with the pipe to extend the holding time of the suction cup. The shape of the negative pressure tank and the optimal mechanism will be determined later.

“Other embodiment 6”
A ninth aspect of the present invention is the same as the second or fifth aspect of the present invention, wherein the cylinder is in the shape of a hollow ring, and both ends are provided with folds, and the inside of the ring hole is filled with an elastic body. To explain one example with specific parts, we will apply a grommet to the diameter of the hole in the ring (not limited to conventional or commercial products), and fill the grommet hole with an elastic body. It is a method to do. As a technical idea, it is a processing method after forcibly suppressing the violent rampage described in the paragraph “0012”. To explain simply, it is either to absorb the rampage with the drum shape or to suppress and fix the rampage with eyelets. Although both hold, the configuration is different, so that claim 9 is provided. (The technical idea is similar). Advantages include a simpler manufacturing process, increased product reliability, and improved product stability. There is an effect that the exchange of the filler is possible depending on the application. Of course, it goes without saying that it has the image of a luxury product.

  It is sectional drawing which shows the basic structure (basic thought) of this invention.   It is sectional drawing of the state which attached the container of this invention.   It is sectional drawing of the conventional suction cup with a container.   It is sectional drawing for description of the moment of this invention.   It is sectional drawing of the attachment for attachment of this invention. (With sucker attached)   It is sectional drawing of the state which fixes the sheet | seat using the magnet of this invention.   It is sectional drawing which shows the state which fixes the sheet | seat by the container of this invention, a cork, and a thumbtack.   It is the perspective view (v) and sectional drawing (w) of the hourglass cylinder of this invention.   It is sectional drawing of the state attached by sticking the thumbtack in the elastic body cylinder of this invention.   It is sectional drawing when a sheet | seat is mounted | worn through the split pin to the elastic body cylinder of this invention.   It is sectional drawing when a wire is passed through the elastic body cylinder of the present invention.   It is sectional drawing when providing a through-hole in the elastic body cylinder of this invention, and mounting | wearing with the stick | rod.

Explanation of symbols

1 fin 1a hole 1b knob 2 cylinder 2a drum cylinder 2b through hole provided in the drum cylinder 3 rod f hook with bulge at the end of the cavity 4 cylinder, g round ring, h double-sided suction cup, i side hole, j bolt , K split pin, m1 wire, m2 string, n 鋲, o sheet, q magnet, s internal screw, u thumbtack, t wooden plug / cork

Claims (9)

  When a cylindrical cylinder (2) having a diameter larger than the hole (1a) is inserted into and attached to an annular bowl (1) having a shape cut out from the center of the suction cup, and the suction cup is pressed against the surface to be adsorbed, By using at least one of the changes in the thickness of the ridge, the increase in stress due to force synthesis, and the increase in material hardness, the restoring force increases and the holding force is enhanced by the action. A method for increasing the holding power of the suction cup.   The suction cup is composed of an annular ridge (1) cut out from the center of the suction cup and a cylindrical column (2) that is fitted to the center, and the hole diameter (1a) is 1/3 of the outer diameter of the suction cup. A suction cup characterized by being a cylinder (2) having a diameter of about 105% to 118% of the hole (1a) of the ring-shaped flange (1a).   The suction cup according to claim 2, wherein the cylindrical column is a permanent magnet.   A suction cup characterized by providing a cavity (3) from the center of the cylindrical column of claim 2 to form a container.   3. The suction cup according to claim 2, wherein the length of the cylinder is slightly larger than the thickness of the suction cup, and the cylinder has a shape in which the diameter of both end faces of the cylinder is large and the diameter is small at the midpoint.   6. The suction cup according to claim 5, wherein the cylinder is made of an elastic body and is a cylinder having a diameter of 105% or more of the diameter of the original hole of the ring-shaped bowl when the suction cup is attached to the attracted surface. .   6. The suction cup according to claim 5, wherein the cylindrical barrel portion is formed in a hard ring shape in the hole of the annular flange, and the elastic body is filled in the hole of the ring.   The suction cup according to claim 6 or 7, wherein a hole (2b) penetrating the cylinder is provided.   6. The ring-shaped hole of claim 2, wherein a circular cylinder is formed in a hollow ring shape, and folded portions are provided at both ends of the ring, and an elastic body is filled in the hole of the ring. A suction cup characterized by

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