Clamping tool

Abstract

To provide a clamping tool capable of clamping an object having various extensions with a simple operation and holding the object so that it extends along a fixing surface.SOLUTION: A pair of holder parts face each other in an X direction, have shapes that are symmetrical to each other with respect to the center line of a clamping device in the X direction, and have a pair of inclined surfaces that become increasingly separated from each other as they move upward in a Z direction. A plurality of tongue parts are provided on each of the pair of inclined surfaces so that they are symmetrical to each other with respect to the center line. The plurality of tongue parts provided on each of the pair of inclined surfaces extend downward in the Z direction at the same predetermined angle β with respect to the X direction. A base, the pair of holder parts, and the plurality of tongue parts are integrally molded from an elastic material.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a clamping device that is fixed to a wall surface or other fixed object, and that can removably hold objects having an extension part that extends in a certain shape, such as pens, brushes, and other writing implements having a columnar or cylindrical extension part, fishing rods, ladles, and other cooking utensils having an extension part, chopsticks, spoons, knives, and other tableware having an extension part, on the fixed object by inserting and clamping them. [Background technology]

[0002] The writing instrument holder described in Patent Document 1 has a configuration in which a brush-like protrusion made of elastic material is formed on the inner periphery of an annular insertion hole into which the end of a writing instrument is inserted, and stands up toward the center of the insertion hole. This configuration forms a space that acts as an introduction path for the tip of the writing instrument, and when the tip of the writing instrument is inserted, the side of the protrusion abuts against the pen shaft, supporting the writing instrument through friction with the abutting side, and the elasticity of the protrusion makes it possible to hold writing instruments with pen shafts of different thicknesses.

[0003] The pen clip described in Patent Document 2 has a rotor rotatably fitted to a center line protruding from a fixed base, a pair of holders with engaging legs that engage with guide holes formed radially on both sides of the center of the rotor, allowing them to move toward and away from each other, and an elastic member that acts on the engaging legs of the holders to urge the holders toward each other's center, thereby providing a pen clip that clamps a writing instrument between the pair of holders, and is able to clamp thin writing instruments, and because the elastic member is not exposed, it does not reduce purchasing desire from a design perspective, making it easy to use. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Utility Model Application Publication No. 6-792 [Patent Document 2] Patent No. 2926174 Summary of the Invention [Problem to be solved by the invention]

[0005] However, although the writing instrument holder described in Patent Document 1 can easily hold a writing instrument by introducing the tip of the writing instrument into the space that serves as an introduction path, when a writing instrument is held in a writing instrument holder that is fixed to a wall surface or the like, gravity acts in a direction different from the direction in which the held writing instrument extends, causing the instrument to tilt and making the holding state unstable, and also causing the writing instrument to extend in a direction away from the wall, etc., which may create an unsafe situation for pedestrians passing by near the wall.

[0006] The pen clip described in Patent Document 2 holds the held writing instrument in a state where it extends along the fixed surface. Therefore, even if the pen clip is fixed to a wall or the like, the held writing instrument extends along the wall, reducing the danger to pedestrians passing by the wall. However, this pen clip requires a series of manufacturing processes, including separately manufacturing the base, rotating body, and pair of holders, fitting the rotating body to the base, and assembling the coil spring as an elastic body and the holder. This requires a complex manufacturing process and detailed and tedious work such as assembling the coil spring. Furthermore, it is necessary to purchase materials for the metal coil spring, base, and other components, resulting in the problem of high material costs.

[0007] Therefore, the present invention aims to provide a clamping device that can clamp and hold objects having various extension portions with a simple operation, and is configured to hold the object so that it extends along the fixing surface, thereby allowing the object to be held stably regardless of the surface direction of the fixing surface and reducing the risk to nearby passersby, etc., and furthermore, by being configured to be manufactured by molding the entire device as a single unit, it does not require complex manufacturing processes or tedious work and can reduce material costs. [Means for solving the problem]

[0008] In order to solve the above problem, the present invention provides a clamping device that has a base that is detachably fixed to a plane of a fixed object and that clamps an object having an extension that extends in a fixed shape, the base is fixed so as to extend along a plane that includes the X and Y directions that are perpendicular to each other, and a pair of holder parts are provided that extend from both ends of the base in the X direction along the Z direction that is perpendicular to the plane, the pair of holder parts face each other in the X direction and have shapes that are symmetrical to each other about a center line of the clamping device in the X direction, and have a pair of inclined surfaces that become increasingly separated from each other as they extend upward in the Z direction, and a clamping space that clamps the object is formed by the space surrounded by the pair of inclined surfaces, and a plurality of tongue parts are provided on each of the pair of inclined surfaces so as to be symmetrical to each other about the center line, and the plurality of tongue parts provided on each of the pair of inclined surfaces extend at the same predetermined angle β relative to the X direction and incline downward in the Z direction, and the base, the pair of holder parts, and the plurality of tongue parts are characterized in that they are integrally molded from an elastic material.

[0009] In the clamping device of the present invention, when the spacing in the X direction between the pairs of tongues located symmetrically with each other on a pair of inclined surfaces and the uppermost ones in the Z direction is defined as Wtop and the extension length of each is defined as Ltop, the spacing in the X direction between the pairs of tongues located symmetrically with each other on the pair of inclined surfaces and the lowermost ones in the Z direction is defined as Wlow and the extension length of each is defined as Llow, the extension length of each of the pairs of tongues located intermediate between the uppermost and lowermost ones in the Z direction is defined as Lint, the outer diameter of the extension portion having the smallest outer diameter within the range set to be clampable is defined as Dmin, the outer diameter of the extension portion having the largest outer diameter within the range set to be clampable is defined as Dmax, and the distance in the Z direction between the starting point of the uppermost one of the pairs of tongues located in the Z direction from the inclined surfaces to the deepest part of the base in the clamping space is defined as Htop, it is preferable that the inclination angle α of the inclined surfaces with respect to the X direction, the predetermined angle β at which the multiple tongues extend, and the elasticity satisfy the following equations (1) to (5): Wlow <Wtop (1) Llow <Lint<Ltop (2) Dmin×0.5≦Wlow <Dmin×0.7 (3) Dmax×0.5≦Wtop <Dmax×0.7 (4) Dmax≦Htop (5)

[0010] In the clamping tool of the present invention, the intermediate portion is provided with a plurality of pairs of tongue portions, and it is preferable that the closer the pairs of tongue portions are to the bottom, the shorter the interval in the X direction.

[0011] In the clamping tool of the present invention, the elastic material is preferably silicone rubber.

[0012] In the clamping tool of the present invention, the inclination angle α is preferably 70 degrees or more and 76 degrees or less with respect to the X direction, and the predetermined angle β at which the plurality of tongues extend is preferably 25 degrees or more and 35 degrees or less.

[0013] In the clamping tool of the present invention, it is more preferable that the inclination angle α is 73 degrees with respect to the X direction, and the predetermined angle β at which the plurality of tongues extend is 30 degrees. [Effects of the Invention]

[0014] According to the present invention, a clamping device can be provided that can clamp and hold objects having various extensions in any position with a simple operation. Furthermore, by configuring the clamping device to hold the object so that it extends along the fixing surface, it is possible to provide a clamping device that can stably hold the object regardless of the surface direction of the fixing surface and reduce the risk to nearby passersby, etc. Furthermore, by configuring the clamping device to be manufactured by molding the entire device as a single unit, it is possible to provide a clamping device that does not require complex manufacturing processes or tedious operations and can reduce material costs. [Brief explanation of the drawings]

[0015] [Figure 1] 1 is a front view showing the configuration of a clamping tool according to an embodiment of the present invention. [Figure 2] 1 is a perspective view showing a configuration of a clamping tool according to an embodiment of the present invention. [Figure 3] 1 is a front view showing the configuration of a clamping tool according to an embodiment of the present invention. [Figure 4] 1 is a front view showing a state in which an extension portion having an outer diameter Dmin is clamped by a clamping tool according to an embodiment of the present invention. FIG. [Figure 5] 1 is a front view showing a state in which an extension portion having an outer diameter Dmax is clamped by a clamping tool according to an embodiment of the present invention. FIG. [Figure 6] 1 is a perspective view showing a state in which a ballpoint pen is clamped as an object in a clamping tool according to an embodiment of the present invention. [Figure 7] 1 is a perspective view showing a state in which a ladle is clamped as an object by a clamping tool according to an embodiment of the present invention. FIG. [Figure 8] 1 is a perspective view showing a state in which a fishing rod is clamped as an object between two clamping devices according to an embodiment of the present invention. FIG. [Figure 9] FIG. 10 is a perspective view showing the configuration of a clamping tool according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0016] Hereinafter, a clamping tool according to an embodiment of the present invention will be described in detail with reference to the drawings. Figures 1 and 3 are front views showing the configuration of clamping tool 10 according to this embodiment, Figure 2 is a perspective view showing the configuration of clamping tool 10, Figure 4 is a front view showing the state when clamping tool 10 clamps an extended portion C having an outer diameter Dmin, and Figure 5 is a front view showing the state when clamping tool 10 clamps an extended portion C having an outer diameter Dmax.

[0017] Each figure shows XYZ coordinates as reference coordinates. In the following description, the Z1-Z2 direction (Z direction) is referred to as the up-down direction, the X1-X2 direction (X direction) as the left-right direction, and the Y1-Y2 direction (Y direction) as the front-back direction. The X1-X2 direction and the Y1-Y2 direction are perpendicular to each other, and the XY plane containing these directions is perpendicular to the Z1-Z2 direction.

[0018] The clamping device 10 of this embodiment shown in Figures 1 to 3 comprises a base 20 that is detachably fixed to a plane P of a fixed object, a pair of holder parts 30, 40 that extend from the base 20, six tongue parts 32, 33, 34, 35, 36, 37 that are provided on an inclined surface 31 of the first holder part 30, and six tongue parts 42, 43, 44, 45, 46, 47 that are provided on an inclined surface 41 of the second holder part 40.

[0019] The base 20, the pair of holder parts 30, 40, the tongue parts 32 to 37 of the holder part 30, and the tongue parts 42 to 47 of the holder part 40 are manufactured by integrally molding them from an elastic material, for example, rubber. As for the rubber, in addition to synthetic rubber, such as silicone rubber described below, natural rubber material obtained by vulcanization softening can also be used.

[0020] The base 20 has a flat bottom surface 20a, and is used by fixing the bottom surface 20a in close contact with a plane P (see FIG. 1) of a fixed object. When fixed to the plane P, the base 20 is arranged so as to extend along the plane P that includes the X direction and the Y direction.

[0021] The base 20 has a pair of fixing holes 21, 22 into which a rectangular parallelepiped permanent magnet can be inserted along the Y direction. The pair of fixing holes 21, 22 has a rectangular cross section perpendicular to the Y direction. Furthermore, the pair of fixing holes 21, 22 are arranged symmetrically about the center line AX in the X direction, and are located at the center of each imaginary region divided into left and right halves by the center line AX. By inserting the permanent magnets into the pair of fixing holes 21, 22, respectively, the permanent magnets can be tightly attached to the plane P of a fixed object made of a material that attracts magnets, such as iron or steel, by the magnetic attraction of the permanent magnets. Various types of permanent magnets can be used, but using a neodymium magnet, for example, can increase the fixing strength to the plane P. Furthermore, since the permanent magnets are placed in the pair of fixing holes 21, 22, respectively, the fixing strength can be ensured while reducing material costs compared to a configuration in which the permanent magnets are arranged over a wider area of ​​the base 20.

[0022] Furthermore, the pair of fixing holes 21, 22 are located at the center of each of the regions divided left and right by the center line AX. Therefore, when an attempt is made to forcefully insert the extension C of the object into the clamping space S, the pair of holder parts 30, 40 can be prevented from bending outward and the center part of the base part 20 in the left-right direction can be prevented from deforming so as to rise above the plane P, thereby preventing plastic deformation and damage to the elastic material that makes up the clamping device 10.

[0023] It is preferable to fix the permanent magnets to the fixing holes 21 and 22 with adhesive, as this will ensure that the magnets are held stably without coming off when they are attached to or detached from the fixed object or when an object is inserted into the clamping space.

[0024] The fixed object has a plane P to which clamping device 10 is fixed and is an object fixed to a floor or wall, such as a refrigerator, cabinet, whiteboard, desk, or wall, pillar, ceiling, or floor of a house. The plane P to which clamping device 10 is fixed may extend or expand in any direction, including the horizontal and vertical directions. Because clamping device 10 is attracted to plane P by the attractive force of the permanent magnet, it can be fixed to plane P in any orientation. In the reference coordinates shown in each figure, plane P is defined as the XY plane, which includes the X and Y directions, depending on the fixed orientation of clamping device 10, and the normal direction of the XY plane is defined as the Z direction.

[0025] A pair of holder parts 30, 40 extending along the Z direction perpendicular to the plane P are provided at both ends of the base 20 in the X direction. The pair of holder parts 30, 30 have shapes symmetrical to each other with respect to the center line AX in the X direction. The pair of holder parts 30, 30 have a pair of inclined surfaces 31, 41 that face each other and that become increasingly separated as they move upward in the Z direction (toward the Z1 side). As shown in FIG. 1 , the inclined surface 31 on the left (X1) side is a plane inclined to open leftward at an angle α with respect to the X direction, and the inclined surface 41 on the right (X2) side is a plane inclined to open rightward at an angle α with respect to the X direction.

[0026] The space surrounded by the pair of inclined surfaces 31, 41 and the base 20 forms a clamping space S that clamps the extension C of the object (see FIG. 4). The base 20 forms a curved surface 23 that is convex downward in the clamping space S, and the position that overlaps with the center line AX is the deepest part 24.

[0027] Here, the target object is a cylindrical, prism-shaped, plate-shaped, or other object having an extension portion, such as a pen, brush, or other writing implement having a columnar extension portion, a fishing rod, a ladle, or other cooking implement having an extension portion, chopsticks, spoons, knives, or other tableware having an extension portion, and the cross-sectional shape orthogonal to the axial direction of the extension portion may be a U-shaped or V-shaped groove, or a shape with irregularities.

[0028] The first inclined surface 31 is provided with six tongues 32, 33, 34, 35, 36, and 37. When viewed from the front (Y1) side to the rear (Y2) side, these tongues 32, 33, 34, 35, 36, and 37 extend to the right (X2) side and incline downward in the Z direction (Z2) at an angle β with respect to the X direction. Each of the six tongues 32, 33, 34, 35, 36, and 37 forms an angle γ with respect to the first inclined surface 31.

[0029] The second inclined surface 41 is provided with six tongues 42, 43, 44, 45, 46, and 47. When viewed from the front (Y1) side to the rear (Y2) side, these tongues 42, 43, 44, 45, 46, and 47 extend to the left (X1) side and incline downward in the Z direction (Z2) at an angle β with respect to the X direction. Each of the six tongues 42, 43, 44, 45, 46, and 47 forms an angle γ with respect to the second inclined surface 41.

[0030] As described above, the six tongues 32, 33, 34, 35, 36, and 37 provided on the first inclined surface 31 and the six tongues 42, 43, 44, 45, 46, and 47 provided on the second inclined surface 41 are each inclined at an angle β with respect to the X direction, are provided in pairs at corresponding positions in the Z direction, and are positioned and shaped to be symmetrical with respect to the center line AX. By providing the tongues 32, 33, 34, 35, 36, 37, 42, 43, 44, 45, 46, and 47 in this manner, the extension C of the object can be smoothly inserted into the clamping space S with little force, and since the tongues elastically deform downward in accordance with the outer diameter of the extension C, they have a check effect against upward displacement of the extension C after insertion. Furthermore, as the extension C is pushed downward, it is sandwiched from the left and right by multiple pairs of tongues, which increases the check effect and makes it possible to securely hold the extension C within the sandwiched space S.

[0031] The six tongue portions 32, 33, 34, 35, 36, and 37 provided on the first inclined surface 31 each have a constant thickness when viewed from the Y direction, and are provided at equal intervals (distances in the width direction). The six tongue portions 42, 43, 44, 45, 46, and 47 provided on the second inclined surface 41 each have a constant thickness when viewed from the Y direction, and are provided at equal intervals (distances in the width direction).

[0032] Here, the number of tongues provided on each pair of inclined surfaces 31, 41 may be four to five, or seven or more, as long as they are provided in equal numbers and symmetrical with respect to the center line AX. Furthermore, the width and spacing of the tongues are not limited to those of this embodiment, as long as they are symmetrical with respect to the center line AX. Furthermore, the widths of the tongues may or may not be the same, and if the width of the tongues in the middle is increased, the total number of pairs of tongues may be two or three.

[0033] The upper surfaces 30t of the first holder part 30 and the upper surfaces 40t of the second holder part 40 extend along the X direction. The uppermost tongue part 32 among the tongue parts provided on the first inclined surface 31 has the connection point with the upper surface 30t as the starting point 32a, and the uppermost tongue part 42 among the tongue parts provided on the second inclined surface 41 has the connection point with the upper surface 40t as the starting point 32a.

[0034] The shapes and arrangements of the tongue parts 32, 33, 34, 35, 36, 37, 42, 43, 44, 45, 46, 47 are set as follows. According to the range of the outer diameter of the extension part C of the object, the shapes and arrangements of the tongue parts are enlarged or reduced.

[0035] Among the six pairs of tongue parts (the pair of tongue parts 32 and 42, the pair of tongue parts 33 and 43, the pair of tongue parts 34 and 44, the pair of tongue parts 35 and 45, the pair of tongue parts 36 and 46, and the pair of tongue parts 37 and 47) provided symmetrically with respect to each other on the pair of inclined surfaces 31, 41, the interval in the X direction between the tongue parts 32, 42 located at the uppermost part in the Z direction is Wtop, and the lengths by which they extend are Ltop. Among the above six pairs of tongue parts, the interval in the X direction between the tongue parts 37, 47 located at the lowermost part in the Z direction is Wlow, and the lengths by which they extend are Llow. Among the above six pairs of tongue parts, the lengths by which the four pairs of tongue parts 33, 34, 35, 36, 43, 44, 45, 46 located in the middle part between the uppermost tongue parts 32, 42 and the lowermost tongue parts 37, 47 in the Z direction extend are Lint. The outer diameter of the columnar extension part C having the smallest outer diameter within the range set to be clampable by the clamp 10 is Dmin (see FIG. 4). The outer diameter of the columnar extension part C having the largest outer diameter within the range set to be clampable by the clamp 10 is Dmax (Dmin < Dmax, see FIG. 5). Among the above six pairs of tongue parts, the distance in the Z direction between the starting points 32a, 42a from which the tongue parts 32, 42 located at the uppermost part in the Z direction start to extend from the inclined surfaces 31, 41 respectively and the deepest part 24 of the base 20 in the clamping space S is Htop. When these are set as above, the following formulas (1) to (5) hold true based on the inclination angle α of the pair of inclined surfaces 31, 41 relative to the X direction, the predetermined angles β and γ at which each tongue portion extends, and the elasticity of the material that constitutes clamping tool 10. Wlow <Wtop (1) Llow <Lint<Ltop (2) Dmin×0.5≦Wlow <Dmin×0.7 (3) Dmax×0.5≦Wtop <Dmax×0.7 (4) Dmax≦Htop (5)

[0036] Regarding formula (1), the X-direction spacing of the four pairs of tongues located in the middle section (the pair of tongues 33-43, the pair of tongues 34-44, the pair of tongues 35-45, and the pair of tongues 36-46) is arbitrary. However, it is preferable that the X-direction spacing of at least one of the four pairs of tongues be greater than Wtop, because this facilitates stable clamping of the extension C, which is pushed into the clamping space S from the uppermost tongues 32 and 42, in the middle section. Furthermore, depending on the weight of the expected object, it is preferable to make the X-direction spacing of the lowermost pair of tongues 36-46 in the middle section smaller than Wtop, because this facilitates support of the extension C together with the uppermost tongues 37 and 47, resulting in a stable clamping state. Regarding formula (2), the extension lengths of the four pairs of tongues located in the middle section are arbitrary, and all four pairs of tongues satisfy formula (2).

[0037] When clamping tool 10 satisfies the above formulas (1) to (5), a columnar extension C having an outer diameter within a range set so as to be clampable by clamping tool 10 can be reliably clamped within clamping space S with a simple pushing operation. When spacing Wlow satisfies formula (3), a columnar extension C having an outer diameter Dmin can be clamped at least by tongues 37 and 47 located at the bottom, and when spacing Wtop satisfies formula (4), a columnar extension C having an outer diameter Dmax can be clamped by tongues 32 and 42 located at the top.

[0038] Regarding formula (3), when the spacing Wlow is less than 0.5 times the outer diameter Dmin, it becomes difficult to insert the columnar extension C having the outer diameter Dmin between the tongues 37 and 47 located at the bottom depending on the expected pushing force, and when the spacing Wlow is 0.7 times the outer diameter Dmin or more, even the tongues 37 and 47 located at the bottom, which have the narrowest spacing, have a weak contact force with the columnar extension C having the outer diameter Dmin, so that the object of the columnar extension C having the outer diameter Dmin cannot be securely clamped.

[0039] Regarding formula (4), when the spacing Wtop is less than 0.5 times the outer diameter Dmax, the columnar extension C having the outer diameter Dmax cannot be pushed into the clamping space S with the expected pushing force, and when the spacing Wtop is 0.7 times the outer diameter Dmax or more, the force with which the tongues 32, 42 located at the top contact the columnar extension C having the outer diameter Dmax is weak, so the object of the columnar extension C having the outer diameter Dmax cannot be securely clamped.

[0040] In Example 1 below, the inclination angle α of the inclined surfaces 31 and 41 and the extension angle β of the tongue portions 32, 33, 34, 35, 36, 37, 42, 43, 44, 45, 46, and 47 are set to 73 degrees and 30 degrees, respectively. However, when the inclination angle α is 73 degrees, the extension angle β is not limited to 30 degrees. However, in terms of the non-return effect of the extension portion C pressed into the clamping space S, it is preferable that the extension angle β be in the range of 25 degrees to 35 degrees. Furthermore, the inclination angle α is not limited to 73 degrees. However, in terms of the non-return effect of the extension portion C pressed into the clamping space S, it is preferable that the inclination angle α be in the range of 70 degrees to 76 degrees. Most preferably, the inclination angle α is 73 degrees and the extension angle β is 30 degrees. In clamping device 10, the inclined structure of the tongue, its elasticity, and the spacing between adjacent tongues enable the clamping strength to be increased by the synergistic effect of the reaction force due to the elastic deformation of the tongue when extension C is pressed in, the non-return effect due to the reaction force caused by adjacent tongues coming into contact and overlapping with each other, and the non-return effect due to the reaction force of the rubber elasticity of the material.

[0041] Tongue portions 32, 33, 34, 35, 36, 37, 42, 43, 44, 45, 46, and 47 can be determined arbitrarily in consideration of the shape of the extension C of the object to be clamped. In the following Example 1, the thickness of the tongue portions is 1.2 mm, but it may be set in the range of 0.9 mm to 1.5 mm, and it is advisable to adjust the spacing between adjacent tongue portions in accordance with the increase or decrease in thickness without changing the positions of the uppermost tongue portions 32 and 42 and the lowermost tongue portions 37 and 47.

[0042] Furthermore, when clamping an extension portion C having an outer diameter range larger or smaller than the outer diameter range of the extension portion C assumed in Example 1 (10 mm or more and 16 mm or less), the base portion 20, holder portions 30, 40, and clamping space S are made to have a similar shape in size to match the outer diameter range, and the thickness of the tongue portion may also be made to have a similar shape, but the thickness may be made relatively thicker or thinner depending on the weight and shape of the assumed object.

[0043] Example 1 The clamping tool 10 of Example 1 is an example that is assumed to clamp a writing part (object) having an extension C with a maximum outer diameter Dmax of 16 mm and a minimum outer diameter Dmin of 10 mm. The clamping tool 10 was made of a general-purpose molding silicone rubber manufactured by Shin-Etsu Chemical Co., Ltd. This silicone rubber had the following properties. Linear shrinkage (150°C) 2.7~4.0 Tensile strength (unit: MPa) 4.7~9.7 Hardness (Durometer A) 31~84

[0044] This silicone rubber was molded (vulcanization molded) under the following conditions to produce the clamping tool 10 having the shape shown in FIGS. ·Mold temperature 170°C Time from charging the material into the mold, through vulcanization, to removal: 15 minutes

[0045] External shape of clamping tool 10: Width in the left-right direction: 35 mm at the bottom of the base 20, The width of the pair of holder portions 30, 40 at the positions of the upper surfaces 30t, 40t is 30 mm. Top surface 30t, 40t width 2.7mm Vertical height: Overall height 31.5 mm, height of pair of holder parts 30 and 40 23.5 mm, height of curved surface 23 1.4 mm - Curved surface 23 has a radius of curvature of 11 mm

[0046] The thickness of the clamping tool 10 in the front-rear direction (Y direction): the thickness is 15 mm, which is common to the base portion 20, the pair of holder portions 30, 40, and each tongue portion. Inclination angle α of inclined surface 31: 73 degrees with respect to the X direction (73 degrees upward (inclination to the left)) Inclination angle α of inclined surface 41: 73 degrees with respect to the X direction (73 degrees upward (inclination to the right)) The angle between the inclined surface 31 and the inclined surface 41 is 34 degrees.

[0047] Tongues 32, 33, 34, 35, 36, 37 Extension angle β: 30 degrees in the X direction (30 degrees downward, extension to the right) Angle γ with respect to inclined surface 31: 43 degrees Tongues 42, 43, 44, 45, 46, 47 Extension angle β: 30 degrees in the X direction (30 degrees downward, extension to the left) Angle γ with respect to inclined surface 31: 43 degrees

[0048] Extension length Tongue 32, 42 (top) 9.2mm each Tongue 33, 43 (second from the top) 6.85mm each Tongues 34 and 44 (third from the top) 5.91mm each Tongue 35, 45 (fourth from the top) 4.96mm each Tongues 36 and 46 (5th from the top) 4.72mm each Tongue 37, 47 (bottom) 4.48mm each

[0049] Distance between adjacent tongues (distance along the width of the tongue) Tongues 32 and 33, tongues 42 and 43: 1.25 mm each Tongues 33 and 34, tongues 43 and 44: 1.25 mm each Tongues 34 and 35, tongues 44 and 45: 1.20 mm each Tongues 35 and 36, tongues 45 and 46: 1.10 mm each Tongues 36 and 37, tongues 46 and 47: 1.20 mm each All tongues 1.2mm thick Distance L1 between tongue 37 and curved surface 23, and distance L1 between tongue 47 and curved surface 23: 6.15 mm (see Figure 3) (Minimum distance in the direction along the inclined surfaces 31 and 41)

[0050] Distance between opposing tongues (X direction) Tongue 32 and tongue 42 (Wtop) 8.2mm Tongue 33 and tongue 43 10.2mm Tongue 34 and Tongue 44 9.7mm Tongue 35 and tongue 45 9.4mm Tongue 36 and Tongue 46 7.9mm Tongue 37 and tongue 47 (Wlow) 6.4mm

[0051] When an extension C of an object is pressed into clamping space S of clamping tool 10 configured as described above, extension C, which has a diameter of 10 mm, which is the minimum diameter Dmin of the set outer shape range, reaches a position where it comes into contact with curved surface 23 and is supported on its underside, as shown in Fig. 4, and is clamped from the left and right by a pair of tongues 37, 47 that have elastically deformed downward, and is pressed down from above by contact with a pair of tongues 36, 46. Regarding formula (3) above, when the spacing Wlow is 0.7 times the outer diameter Dmin or more, the clamping force of tongues 37, 47 is weak, and the clamping force of tongues 33 to 36 and 43 to 46, which are spaced apart more than the spacing between tongues 37, 47, is even weaker, resulting in an unstable state in clamping space S and preventing reliable clamping.

[0052] In contrast, extension portion C, which has a diameter of 16 mm, which is the maximum diameter Dmax of the set outer shape range, does not reach below the lowest tongue portions 37, 47, as shown in Figure 5, and is supported at the bottom by the lowest tongue portions 37, 47 and a pair of elastically deformed tongue portions 36, 46, is supported from the sides by the three pairs of elastically deformed tongue portions 33 to 35, 43 to 45, and is pressed down from above by coming into contact with the uppermost tongue portions 36, 37.

[0053] FIG. 6 is a perspective view showing a state in which a ballpoint pen O, a writing instrument, is clamped in the clamping device 10 as an object. The clamping device 10 shown in FIG. 6 is fixed to a plane P extending in the vertical direction (the up-and-down direction in FIG. 6). The ballpoint pen O has a shaft C with a constant outer diameter, and the shaft C, which is a columnar extension, is pressed into and held in the clamping space S of the clamping device 10. By clamping the ballpoint pen O in this manner, the shaft C of the ballpoint pen O is maintained in a position aligned horizontally. Therefore, since the shaft C does not extend from the plane P in the direction normal to it, the three-dimensional space required for holding the ballpoint pen can be reduced, and the danger to passersby around the plane P can be reduced. The shaft C of the ballpoint pen O can be easily pressed into the clamping space S by a user of the ballpoint pen O with one hand.

[0054] FIG. 7 is a perspective view showing a state in which a ladle O, which is a cooking utensil, is clamped by clamping tool 10 as an object. Clamping tool 10 shown in FIG. 7 is fixed to a plane P extending in the vertical direction (the up-and-down direction in FIG. 7), similar to the ballpoint pen shown in FIG. 6. Ladle O has a handle C of a certain width, and the handle C, which is an extension, is pressed into and held within clamping space S of clamping tool 10. By clamping ladle O in this manner, the handle C of ladle O is maintained in a position along the vertical direction. Therefore, the same effect as in the case of ballpoint pen O shown in FIG. 6 can be obtained, and by arranging a plurality of clamping tools 10 side by side, cooking utensils other than ladles, tableware with extensions, etc. can be arranged side by side.

[0055] In the examples shown in Figures 6 and 7, the clamping device 10 is positioned so that the object O can be held in a position extending horizontally or vertically along the plane P, but the fixed position of the clamping device 10 relative to the plane P can be in any direction other than the horizontal or vertical direction.

[0056] FIG. 8 is a perspective view showing a state in which a fishing rod O is clamped between two clamping devices 10, 10 as an object. The two clamping devices 10, 10 shown in FIG. 8 are fixed to a plane P extending in the vertical direction (the up-and-down direction in FIG. 8), as in FIGS. 6 and 7, and are respectively disposed at positions corresponding to two predetermined positions on the fishing rod O. The fishing rod O has a structure in which multiple cylindrical portions are extended by being reeled out or added to concentrically, and is held by pressing two cylindrical portions C, C as extension portions having an outer diameter within a range that can be clamped by the clamping device 10 into the two clamping devices 10, 10, respectively. This provides the same effects as the ballpoint pen O shown in FIG. 6, and by clamping at multiple points, it becomes possible to stably hold a long, extending object.

[0057] In order to hold a longer or heavier object, the extension portion can be clamped by three or more clamping tools 10. Furthermore, by adjusting the modulus of elasticity of the elastic material used in molding depending on the weight of the object, stable clamping can be achieved.

[0058] 9 is a perspective view showing the configuration of a clamping tool 110 according to a modified example. This clamping tool 110 has a base 120 and a pair of holder parts 130, 140, which are configured similarly to the above-described embodiment, and the tongue part also has the same configuration. However, the base 120 does not have a pair of fixing holes 21, 22.

[0059] In the above embodiment, permanent magnets are placed in the pair of fixing holes 21, 22, and the magnetic force of the magnets fixes the clamping device 10 to the flat surface P. However, the fixing method is not limited to this. For example, as shown in Fig. 9, double-sided tape 111 can be adhered to the bottom surface 120a of the base 120, and the release paper 112 can be peeled off and the tape can be adhered to the flat surface P for fixation. With this configuration, the double-sided tape 111 can be easily provided on the base 120 as a fixing means, and the material cost of the fixing means can be reduced.

[0060] Another fixing method is to apply adhesive to the bottom surface 20a of the base 20 and fix it to the plane P. Although the present invention has been described with reference to the above embodiment, the present invention is not limited to the above embodiment, and improvements or modifications are possible within the scope of the invention or the purpose of the improvements. [Explanation of symbols]

[0061] 10 Clamps 20 base 20a bottom 21, 22 fixing hole 23 Curved surface 24 Deepest Depths 30 First holder part 30t top surface 31 First Inclined Surface 32, 33, 34, 35, 36, 37 Tongue 32a starting point 40 Second holder part 40t top surface 41 Second Inclined Surface 42, 43, 44, 45, 46, 47 Tongue 42a Starting point 110 Clamps 111 double-sided tape 112 Release paper 120 base 120a bottom 130, 140 holder part AX Center line in the X direction C Extension part O Object P-plane S holds space α Tilt angle β extension angle

Claims

1. A clamping tool for clamping an object having a base portion detachably fixed to a plane of a fixed object and an extension portion that extends in a certain shape, the base is fixed so as to extend along the plane including the X direction and the Y direction which are orthogonal to each other; a pair of holder portions extending from both ends of the base portion in the X direction along the Z direction perpendicular to the plane; The pair of holder portions face each other in the X direction, have shapes symmetrical to each other with respect to a center line of the clamping tool in the X direction, and have a pair of inclined surfaces that are increasingly spaced apart as they extend upward in the Z direction, a clamping space for clamping the object is formed by a space surrounded by the pair of inclined surfaces and the base portion, a plurality of tongue portions are provided on each of the pair of inclined surfaces so as to be symmetrical with respect to the center line; the tongue portions provided on the pair of inclined surfaces respectively extend inclined downward in the Z direction at the same predetermined angle β with respect to the X direction, The clamping tool is characterized in that the base portion, the pair of holder portions, and the plurality of tongue portions are integrally molded from an elastic material.

2. Of the pairs of tongue portions symmetrically arranged on the pair of inclined surfaces, the distance in the X direction between the pairs of tongue portions located at the top in the Z direction is Wtop, and the length of each of the pairs is Ltop. Among the plurality of pairs of tongue portions, the distance in the X direction between the pairs of tongue portions located at the bottom in the Z direction is Wlow, and the length of each of the pairs of tongue portions is Llow. The length of each of the pairs of tongue portions located in the middle between the top and bottom in the Z direction is defined as Lint, The outer diameter of the extension portion having the smallest outer diameter within the range set to be clampable is Dmin, The outer diameter of the stretched portion having the largest outer diameter within the range set to be clampable is designated as Dmax, The distance in the Z direction between the starting point where the uppermost one of the pairs of tongue portions in the Z direction starts to extend from the inclined surface and the deepest part of the base in the clamping space is Htop, and the inclination angle α of the inclined surface with respect to the X direction, the predetermined angle β at which the plurality of tongue portions extend, and the elasticity are set as follows: Wlow<Wtop (1) Llow<Lint<Ltop (2) Dmin × 0.5≦Wlow<Dmin × 0.7 (3) Dmax × 0.5≦Wtop<Dmax × 0.7 (4) Dmax≦Htop (5)

3. 3. The clamping tool according to claim 2, wherein a plurality of pairs of the tongue portions are provided in the intermediate portion, and the closer the pairs of tongue portions are to the bottom portion, the shorter the intervals in the X direction.

4. 4. The clamping tool according to claim 3, wherein the elastic material is silicone rubber.

5. 5. The clamping tool according to claim 4, wherein the inclination angle α is between 70 degrees and 76 degrees with respect to the X direction, and the predetermined angle β at which the plurality of tongues extend is between 25 degrees and 35 degrees.

6. 6. The clamping tool according to claim 5, wherein the inclination angle α is 73 degrees with respect to the X direction, and the predetermined angle β at which the plurality of tongues extend is 30 degrees.

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