Grip

Abstract

To provide a grip that achieves enhanced usability.SOLUTION: Provided is a grip comprising a deformable gripping portion. The gripping portion is composed of a resin member wherein: a temperature or more exhibiting a peak value of loss tangent (tanδ) is within a range of at least 10°C and at most 100°C, as determined by dynamic viscoelasticity measurement at a temperature increase rate of 4°C / min, frequency 1.59 Hz, and strain 0.1%; and the peak value of the loss tangent is 0.5 or more and 3.5 or less.SELECTED DRAWING: Figure 3A

Description

[Technical field]

[0001] The present invention relates to a grip. [Background technology]

[0002] Conventionally, various devices having a grip that is held by a user during use are known. Specifically, Patent Document 1 discloses an electric power tool having a grip configured so that its position can be adjusted. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-98819 A Summary of the Invention [Problem to be solved by the invention]

[0004] In various devices equipped with a grip, including the power tool disclosed in Patent Document 1 as described above, it is preferable for the grip to fit the user's hand from the viewpoint of usability.

[0005] SUMMARY OF THE PRESENT EMBODIMENT An object of the present invention is to provide a grip that can improve usability. [Means for solving the problem]

[0006] One aspect of the grip according to the present invention is A grip having a deformable gripping portion, The gripping portion is made of a resin material that has at least one maximum temperature of the loss tangent (tan δ) in the range of at least 10°C to 100°C, as determined by dynamic viscoelasticity measurement under conditions of a heating rate of 4°C / min, a frequency of 1.59 Hz, and a strain of 0.1%, and in which the maximum value of the loss tangent is 0.5 to 3.5. Effect of the Invention

[0007] According to the present invention, a grip that can improve usability can be provided. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a device equipped with a grip according to an embodiment of the present invention. [Diagram 2] 2 is a cross-sectional view of a grip of the tool shown in FIG. 1 taken along line C1-C1 in FIG. [Figure 3A] 3A is a cross-sectional view of a grip of the tool shown in FIG. 1 taken along line C2-C2 in FIG. [Figure 3B] FIG. 3B is a cross-sectional view of a grip according to an example of a modified example. [Figure 4] FIG. 4 is a cross-sectional view of a grip according to a second embodiment of the present invention. [Diagram 5] FIG. 5 is a cross-sectional view of a grip according to a third embodiment of the present invention. [Figure 6] FIG. 6 is a cross-sectional view of a grip according to a fourth embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view of a grip according to a fifth embodiment of the present invention. [Figure 8] FIG. 8 is a cross-sectional view of a grip according to a fifth embodiment of the present invention. [Figure 9] FIG. 9 is a cross-sectional view of a grip according to a fifth embodiment of the present invention. [Figure 10a] FIG. 10a shows an example of a device to which the grip according to the present invention can be applied. [Figure 10b] FIG. 10b shows an example of a device to which the grip according to the present invention can be applied. [Figure 10c] FIG. 10c shows an example of a device to which the grip according to the present invention can be applied. [Figure 10d] FIG. 10d shows an example of a device to which the grip according to the present invention can be applied. [Figure 10e] FIG. 10e shows an example of a device to which the grip according to the present invention can be applied. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, a grip according to the present invention will be described in detail with reference to the drawings. Note that the grip described below is one example of the grip according to the present invention, and the present invention is not limited to the embodiment described below.

[0010] [Embodiment 1] A grip 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 3A.

[0011] 1 is a perspective view of a device (specifically, a saw 2) equipped with a grip 1 according to this embodiment. The grip according to the present invention is applicable to various devices having a grip held by a user. Devices to which the grip according to the present invention can be applied will be described later.

[0012] In the following description, a Cartesian coordinate system (X, Y, Z) shown in each drawing is used. The X direction is the axial direction of the grip 1 described below. The + side of the X direction is the tip side of the saw 2. The - side of the X direction is the base end side of the saw 2.

[0013] Moreover, the X direction is the direction (front-rear direction) in which the user moves the saw 2 when using the saw 2. Therefore, the X direction is also the front-rear direction of the saw 2.

[0014] The Y direction is the left-right direction of the saw 2. The + side of the Y direction is the left side of the saw 2. The - side of the Y direction is the right side of the saw 2.

[0015] The Z direction is the up-down direction of the saw 2. The + side of the Z direction is the upper side of the saw 2. The - side of the Z direction is the lower side of the saw 2.

[0016] The saw 2 is a tool used for cutting wood or metal. The saw 2 has a saw body 21 and a grip 1.

[0017] The saw body 21 is a generally rectangular plate made of metal. The saw body 21 has first sawtooth 22 and second sawtooth 23. The first sawtooth 22 is provided at one end (lower end) in the lateral direction of the saw body 21. The second sawtooth 23 is provided at the other end (upper end) in the lateral direction of the saw body 21.

[0018] The grip 1 is fixed to the base end (in other words, the rear end) of the saw body 21. The grip 1 has a holding portion 11, a first support portion 12, a second support portion 13, and a support portion .

[0019] The grip portion 11 is a portion that is gripped by the user during use. As shown in Fig. 2, the grip portion 11 is tubular with a substantially elliptical cross-sectional shape. In other words, the grip portion 11 is hollow. The grip portion 11 is deformable.

[0020] 2 is a cross-sectional view of grip portion 11 cut along a plane perpendicular to the axial direction of grip portion 11 and viewed from the axial direction of grip portion 11. Also, Fig. 3A is a cross-sectional view of grip portion 11 cut along a plane parallel to the axial direction of grip portion 11 and viewed from above.

[0021] The gripping portion 11 is made of a resin material in which the loss tangent (tan δ) determined by dynamic viscoelasticity measurement under conditions of a heating rate of 4°C / min, a frequency of 1.59 Hz, and a strain of 0.1% has at least one maximum value in the range of 10°C to 100°C, and the maximum value of the loss tangent is 0.5 to 3.5.

[0022] As long as the above-mentioned conditions can be satisfied, there is no particular limitation on the type of resin constituting the grip portion 11. One example of the resin constituting the grip portion 11 is a 4-methyl-1-pentene polymer.

[0023] The 4-methyl-1-pentene polymer may be any polymer containing at least 4-methylpentene, and is preferably a polymer of 4-methyl-1-pentene and a linear α-olefin having 2 to 3 carbon atoms.

[0024] That is, the 4-methyl-1-pentene polymer preferably contains a structural unit derived from 4-methyl-1-pentene and a structural unit derived from a linear α-olefin having 2 to 3 carbon atoms. The structural ratio of these is appropriately selected according to the desired physical properties.

[0025] The 4-methyl-1-pentene polymer is preferably a foam. The 4-methyl-1-pentene polymer may be in the form of a porous body having a plurality of holes, a mesh, a nonwoven fabric, or a woven fabric.

[0026] The density of the foam is 0.01 g / cm 3 More than 1.00g / cm 3 Preferably, the density of the foam is 0.10 g / cm 3 More than 0.80g / cm 3 It may be the following:

[0027] In this embodiment, the grip portion 11 is composed of one tubular member produced by extrusion molding. Examples of extrusion molding for forming the grip portion 11 include a profile extrusion method, a pipe extrusion method, and a hollow extrusion method. The grip portion 11 may be produced by injection molding. The grip portion 11 may also be produced by a 3D printer. The grip portion 11 may be composed of a plurality of joined tubular members.

[0028] The outer diameter of the grip portion 11 in the long axis direction may be 5 mm or more and 100 mm or less. Also, preferably, the outer diameter of the grip portion 11 in the long axis direction may be 10 mm or more and 80 mm or less. Even more preferably, the outer diameter of the grip portion 11 in the long axis direction may be 20 mm or more and 50 mm or less.

[0029] The outer diameter of the grip portion 11 in the short axis direction may be 5 mm or more and 100 mm or less. Also, preferably, the outer diameter of the grip portion 11 in the long axis direction may be 10 mm or more and 80 mm or less. Even more preferably, the outer diameter of the grip portion 11 in the long axis direction may be 20 mm or more and 50 mm or less.

[0030] The cross-sectional shape of the outer peripheral surface of the grip portion 11 is not limited to an ellipse. When the outer diameter dimension in the major axis direction is equal to the outer diameter dimension in the minor axis direction within the above-mentioned range, the cross-sectional shape of the outer peripheral surface of the grip portion 11 is a perfect circle.

[0031] In this case, the outer diameter of the grip portion 11 may be 5 mm or more and 100 mm or less. Also, preferably, the outer diameter of the grip portion 11 may be 10 mm or more and 80 mm or less. Even more preferably, the outer diameter of the grip portion 11 may be 20 mm or more and 50 mm or less.

[0032] The inner diameter of the grip portion 11 in the long axis direction may be 1 mm or more and 30 mm or less. Preferably, the inner diameter of the grip portion 11 in the long axis direction may be 5 mm or more and 20 mm or less.

[0033] The inner diameter of the grip portion 11 in the minor axis direction may be 1 mm or more and 30 mm or less. Preferably, the inner diameter of the grip portion 11 in the minor axis direction may be 5 mm or more and 20 mm or less.

[0034] The cross-sectional shape of the inner peripheral surface of the grip portion 11 is not limited to an ellipse. When the inner diameter dimension in the major axis direction is equal to the inner diameter dimension in the minor axis direction within the above-mentioned range, the cross-sectional shape of the inner peripheral surface of the grip portion 11 is a perfect circle.

[0035] The thickness dimension of the grip portion 11 may be appropriately set based on the outer dimension and the inner diameter dimension selected from the above-mentioned range of outer dimension and inner diameter dimension of the grip portion 11. The thickness dimension of the grip portion 11 is preferably a dimension that provides good shape stability of the grip portion 11.

[0036] In addition, it is desirable that the thickness of the grip portion 11 is a thickness dimension that allows heat from the user to be easily transferred to the entire grip portion 11 during use. With such a thickness dimension, the grip portion 11 can be easily deformed into a desired shape. As a result, the grip portion 11 can easily become comfortable in the user's hand in a short period of time.

[0037] Moreover, it is desirable that the thickness dimension of the grip portion 11 is a thickness dimension that can ensure the desired strength of the grip 1. In this manner, the thickness dimension of the grip portion 11 may be determined by comprehensively taking into consideration the ease of heat transfer, the ease of fitting to the user's hand, the strength of the grip 1, and the like.

[0038] The grip portion 11 has an outer peripheral surface whose outer diameter (in this embodiment, the minor axis and major axis of the ellipse) does not change over the entire axial length of the grip portion 11. The grip portion 11 has large-diameter inner peripheral surfaces 111, 112 on its inner peripheral surface at both axial ends.

[0039] The gripping portion 11 has a small diameter inner circumferential surface 113 between the large diameter inner circumferential surfaces 111, 112 on the inner circumferential surface. The inner diameter (the major diameter and the minor diameter in this embodiment) of the small diameter inner circumferential surface 113 is smaller than the inner diameters (the major diameter and the minor diameter in this embodiment) of the large diameter inner circumferential surfaces 111, 112.

[0040] The large diameter inner circumferential surface 111 has a shape that follows an outer circumferential surface 122 of a first insertion tube portion 121 of a first support portion 12 described below. The large diameter inner circumferential surface 112 has a shape that follows an outer circumferential surface 132 of a second insertion tube portion 131 of a second support portion 13 described below. In this embodiment, the large diameter inner circumferential surfaces 111, 112 are elliptical.

[0041] The large diameter inner circumferential surface 111 and the small diameter inner circumferential surface 113 are connected by a step portion 114. The large diameter inner circumferential surface 112 and the small diameter inner circumferential surface 113 are connected by a step portion 115.

[0042] The first support portion 12 is provided on one side (in other words, the tip side) of the grip portion 11. In the present embodiment, the first support portion 12 is made of wood. The material of the first support portion 12 may be, for example, wood, synthetic resin, metal, or ceramic.

[0043] The first support portion 12 is a member for supporting a first end portion of the grip portion 11. The first end portion of the grip portion 11 is the left end portion of the grip portion 11 in Fig. 3A. The first support portion 12 is also a member for supporting a first end portion 141 of the support portion 14 described below. The first end portion 141 of the support portion 14 is the left end portion of the support portion 14 in Fig. 3A.

[0044] A tip end of the first support part 12 (in other words, the end on the saw body 21 side) is fixed to the saw body 21. A base end of the first support part 12 (in other words, the end on the grip 1 side) is fixed to the grip 1.

[0045] Specifically, the first support portion 12 has a first insertion tube portion 121 at an end portion on the grip 1 side. The first insertion tube portion 121 has an outer circumferential surface 122 having an elliptical shape and an inner circumferential surface 123 having an elliptical shape.

[0046] An outer peripheral surface 122 of the first insertion tube portion 121 is inserted into the large-diameter inner peripheral surface 111 of the grip 1. In other words, the outer peripheral surface 122 of the first insertion tube portion 121 is fitted into the large-diameter inner peripheral surface 111 of the grip 1.

[0047] The outer peripheral surface 122 of the first insertion tube portion 121 and the large-diameter inner peripheral surface 111 of the grip 1 may be bonded together with an adhesive (not shown).

[0048] A first end 141 of the support portion 14 described below is inserted into the inner circumferential surface 123 of the first insertion tube portion 121. In other words, the first end 141 of the support portion 14 is fitted into the inner circumferential surface 123 of the first insertion tube portion 121.

[0049] The inner circumferential surface 123 of the first insertion tube portion 121 and the first end portion 141 of the support portion 14 may be bonded with an adhesive.

[0050] The second support portion 13 is provided on the other side (in other words, the base end side) of the grip portion 11. In the present embodiment, the second support portion 13 is made of wood. The material of the second support portion 13 may be, for example, wood, synthetic resin, metal, or ceramic.

[0051] The second support portion 13 is a member for supporting a second end portion of the grip portion 11. The second end portion of the grip portion 11 is the end portion on the right side of the grip portion 11 in Fig. 3A. The second support portion 13 is also a member for supporting a second end portion 142 of the support portion 14 described below. The second end portion 142 of the support portion 14 is the end portion on the right side of the support portion 14 in Fig. 3A.

[0052] A tip end of the second support part 13 (in other words, an end on the grip 1 side) is fixed to the grip 1. A base end of the second support part 13 is a free end that is not fixed to another member.

[0053] Specifically, the second support portion 13 has a second insertion tube portion 131 at an end portion on the grip 1 side. The second insertion tube portion 131 has an outer circumferential surface 132 having an elliptical shape and an inner circumferential surface 133 having an elliptical shape.

[0054] The outer peripheral surface 132 of the second insertion tube portion 131 is inserted into the large-diameter inner peripheral surface 112 of the grip 1. In other words, the outer peripheral surface 132 of the second insertion tube portion 131 is fitted into the large-diameter inner peripheral surface 112 of the grip 1.

[0055] The outer peripheral surface 132 of the second insertion tube portion 131 and the large-diameter inner peripheral surface 112 of the grip 1 may be bonded with an adhesive (not shown).

[0056] A second end 142 of the support column 14 described below is inserted into the inner circumferential surface 133 of the second insertion tube portion 131. In other words, the second end 142 of the support column 14 is fitted into the inner circumferential surface 133 of the second insertion tube portion 131.

[0057] The inner circumferential surface 133 of the second insertion tube portion 131 and the first end portion 142 of the support portion 14 may be bonded with an adhesive.

[0058] As described above, in the present embodiment, the grip 1 is supported by the first support portion 12 and the second support portion 13. In addition, the first support portion 12 and the second support portion 13 are connected by the post portion 14 described below. Therefore, the grip 1 is stably supported by the first support portion 12 and the second support portion 13.

[0059] The support column 14 is axially shaped. As shown in Fig. 2, the support column 14 is solid and has a substantially elliptical cross-sectional shape. The support column 14 may be hollow.

[0060] The support portion 14 may be made of, for example, wood, synthetic resin, metal, or ceramic. The outer peripheral surface 143 of the support portion 14 is shaped to fit the small-diameter inner peripheral surface 113 of the grip portion 11.

[0061] An elliptical cylindrical (in other words, annular) space 15 exists between the outer peripheral surface 143 of the support portion 14 and the small-diameter inner peripheral surface 113 of the grip portion 11. In the present embodiment, no member is disposed in the space 15. In other words, only air exists in the space 15.

[0062] The radial length of the space 15 is constant or approximately constant in the circumferential direction of the support portion 14. The radial length of the space 15 is the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11.

[0063] In this embodiment, the outer diameter of the column 14 in the major axis direction is preferably 0.3 mm or more and 28 mm or less. The outer diameter of the column 14 in the minor axis direction is preferably 0.3 mm or more and 28 mm or less.

[0064] The cross-sectional shape of the outer peripheral surface of the support portion 14 is not limited to an ellipse. When the outer diameter dimension in the long axis direction and the outer diameter dimension in the short axis direction are equal within the above-mentioned range, the cross-sectional shape of the outer peripheral surface of the support portion 14 is a perfect circle. In this case, the outer dimension of the support portion 14 is preferably 0.3 mm or more and 28 mm or less.

[0065] The distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11 may be set appropriately according to the outer diameter dimension of the support portion 14 and the inner diameter dimension of the grip portion 11. The amount of deformation of the grip portion 11 when gripped by a user changes depending on the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11.

[0066] When grip portion 11 is gripped by a user, grip portion 11 deforms radially inward. That is, grip portion 11 deforms toward support portion 14. When small-diameter inner peripheral surface 113 of grip portion 11 abuts against the outer peripheral surface of support portion 14, the deformation of grip portion 11 is stopped by support portion 14.

[0067] The amount of deformation of grip portion 11 in the radially inward direction at this time is set according to the distance between outer peripheral surface 143 of support portion 14 and small-diameter inner peripheral surface 113 of grip portion 11 .

[0068] When it is desired to increase the amount of radial inward deformation of the grip portion 11, a thin support portion 14 is used so that the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11 becomes large.

[0069] On the other hand, if it is desired to reduce the amount of radial inward deformation of the gripping portion 11, a thicker support portion 14 is applied so that the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the gripping portion 11 is reduced.

[0070] The amount of radial inward deformation of grip portion 11 affects the fit between the user's hand and grip portion 11. In the case of grip portion 11 of this embodiment, the support portion 14 can be selected depending on the fit desired by the user.

[0071] In addition, the first end portion 141 of the support portion 14 is inserted into the first insertion tube portion 121 of the first support portion 12. The first end portion 141 of the support portion 14 is fixed to the first insertion tube portion 121 of the first support portion 12.

[0072] The second end 142 of the support portion 14 is inserted into the second insertion tube portion 131 of the second support portion 13. The second end 142 of the support portion 14 is fixed to the second insertion tube portion 131 of the second support portion 13.

[0073] As described above, both ends of the support column 14 (i.e., the first end 141 and the second end 142) are fixed to the first support portion 12 and the second support portion 13. Therefore, the support column 14 is stably supported by the first support portion 12 and the second support portion 13.

[0074] In other words, the support column 14 connects the first support portion 12 and the second support portion 13. In this manner, in the present embodiment, the first support portion 12 and the second support portion 13 are connected with high rigidity by the support column 14. Depending on the configuration and application of the grip, the support column may be omitted.

[0075] The configurations of the first support portion, the second support portion, and the support portion are not limited to the above-mentioned configurations. The first support portion, the second support portion, and the support portion may be configured as support portion 14B shown in FIG. 3B.

[0076] 3B is a cross-sectional view of a grip 1A according to an example of a modified example. In the grip 1A, the configurations of the first support portion 12B, the second support portion 13B, and the support portion 14B are different from the configurations of the first support portion 12, the second support portion 13, and the support portion 14 of the grip 1 in the above-described first embodiment.

[0077] Specifically, the first support portion 12B, the second support portion 13B, and the support portion 14B shown in FIG. 3B are integrally configured (in other words, integrally molded).

[0078] A first end 141B of the support pillar 14B is integrally connected to the first support 12B, and a second end 142B of the support pillar 14B is integrally connected to the second support 13B.

[0079] The material of the first support portion 12B, the second support portion 13B, and the support portion 14B may be, for example, wood, synthetic resin, metal, or ceramic. The first support portion 12B, the second support portion 13B, and the support portion 14B may be formed by cutting a cylindrical material.

[0080] The configurations of first support portion 12B, second support portion 13B, and support portion 14B as described above can increase the rigidity of the grip. The other configurations, functions, and effects of grip 1A are similar to those of grip 1 according to the first embodiment described above.

[0081] (Actions and Effects of This Embodiment) According to the grip 1 according to this embodiment having the above-mentioned configuration, the usability of the saw 2 can be improved.

[0082] Specifically, the holding portion 11 of the grip 1 is made of a resin member in which the loss tangent (tan δ) determined by dynamic viscoelasticity measurement under conditions of a temperature rise rate of 4° C. / min, a frequency of 1.59 Hz, and a distortion of 0.1% has at least one maximum value in the range of 10° C. to 100° C., and the maximum value of the loss tangent is 0.5 to 3.5. Therefore, when a user holds the holding portion 11 and the heat of the user is transmitted to the holding portion 11, the holding portion 11 is easily deformed.

[0083] In this state, when the user increases the gripping force, the user's hand pushes the grip portion 11 radially inward. As a result, the grip portion 11 deforms radially inward. At this time, the outer peripheral surface of the grip portion 11 deforms to fit the user's hand. As a result, the fit between the user's hand and the grip portion 11 improves.

[0084] When the fit between the user's hand and the grip portion 11 is improved, the user's force is transmitted to the device more efficiently. This allows the user to perform work with less force. In addition, when the device is a sporting good (e.g., a bat or a golf club), the user's force is transmitted to the sporting good more efficiently, improving the user's performance.

[0085] Particularly in the case of this embodiment, the grip 1 is applied to the saw 2. When using the saw 2, a user moves the saw 2 in the front-to-rear direction (X direction) while gripping the grip portion 11. At this time, the outer peripheral surface of the grip portion 11 is deformed to fit the shape of the user's hand, so that the user's hand is less likely to slip in the front-to-rear direction relative to the grip portion 11. As a result, usability is improved and work safety is improved.

[0086] Furthermore, the amount of radial inward deformation of the grip portion 11 is set by the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11. In other words, by changing the support portion 14, the distance between the outer peripheral surface 143 of the support portion 14 and the small diameter inner peripheral surface 113 of the grip portion 11 can be changed. In other words, by changing the support portion 14, the amount of radial inward deformation of the grip portion 11 can be changed. As a result, it is possible to provide a grip 1 that can achieve a fit that suits the user's preference.

[0087] [Embodiment 2] Grip 1B according to a second embodiment of the present invention will be described with reference to Fig. 4. Grip 1B according to this embodiment is applied to saw 2 (see Fig. 1) like grip 1 according to the first embodiment described above. Configurations other than grip 1B are similar to those of saw 2 in the first embodiment described above. Below, the configuration of grip 1B according to this embodiment will be described, focusing on configurations different from grip 1 according to the first embodiment.

[0088] Grip 1B is fixed to the base end (in other words, the rear end) of saw body 21 (see FIG. 1). Grip 1B has a gripping portion 11, a first support portion 12 (see FIG. 1), a second support portion 13 (see FIG. 1), and a support portion 14. Grip portion 11, first support portion 12, second support portion 13, and support portion 14 are similar to gripping portion 11, first support portion 12, second support portion 13, and support portion 14 in embodiment 1.

[0089] In particular, the grip 1B according to this embodiment has a filling member 16 and a cover member 17.

[0090] The filling member 16 is disposed inside the grip portion 11. Specifically, the filling member 16 is disposed in a space 15 that exists between an outer peripheral surface 143 of the support portion 14 and a small-diameter inner peripheral surface 113 of the grip 1. In the case of this embodiment, the filling member 16 is filled in the space 15.

[0091] The filling member 16 has an elliptical cylindrical shape, similar to the space 15. The filling member 16 is made of a material having resilience, and therefore, the filling member 16 is deformable.

[0092] In addition, the speed at which the filling member 16 returns to its original shape from a deformed state is faster than the speed at which the gripping portion 11 returns to its original shape from a deformed state. Examples of materials for the filling member 16 include low-resilience urethane foam and low-elasticity rubber.

[0093] The material of the filling member 16 is not limited to a material having low resilience. The material of the filling member 16 may be a material having high resilience. The material of the filling member 16 may be appropriately set according to the application of the device including the grip 1 and the preference of the user.

[0094] The filling member 16 may have a slit (not shown) extending in the axial direction at one location in the circumferential direction. In the case of such a configuration, the worker assembles the filling member 16 to the outer peripheral surface 143 of the support portion 14 by widening the width of the slit in the circumferential direction.

[0095] In the case of such a configuration, the worker assembles the filling member 16 to the outer peripheral surface 143 of the supporting member 14 by inserting the supporting member 14 into the inside of the filling member 16 from the opening on one end side of the filling member 16 in the axial direction.

[0096] Alternatively, the filling member 16 may be formed of a rolled sheet-like material. In the case of such a configuration, the worker assembles the filling member 16 to the outer peripheral surface 143 of the support part 14 by wrapping the filling member 16 around the outer peripheral surface 143 of the support part 14.

[0097] The filling member 16 has low resilience. Therefore, when the grip portion 11 is deformed radially inward while being held by the user's hand, the filling member 16 is pushed by the grip portion 11 and also deforms radially inward.

[0098] Then, when the user's hand is removed from the grip portion 11, the filling member 16 tries to return to its original shape faster than the grip portion 11 returns to its original shape. At this time, the filling member 16 pushes the grip portion 11 outward in the radial direction. Then, the grip portion 11 returns to its original shape while being pushed outward in the radial direction by the filling member 16.

[0099] In this configuration, the time required for the grip portion 11 to return to its original shape can be shortened compared to when the filling member 16 is not provided. Note that the filling member 16 may be omitted depending on the application of the device including the grip 1 and the user's preference.

[0100] The cover member 17 corresponds to an example of a surface member, and is provided in a state of covering the entire outer peripheral surface of the grip part 11. The cover member 17 is made of a material other than a 4-methyl-1-pentene polymer.

[0101] Examples of materials for the cover member 17 include fabrics made of natural fibers such as silk, cotton, and hemp; fabrics made of synthetic fibers such as nylon, polyester, urethane, and polyolefin; natural leather, synthetic leather, and films, sheets, and nonwoven fabrics made of various synthetic resins (polyolefin, polyester, nylon, urethane, elastomer, silicone, rubber, and the like). It is preferable that the cover member is made of a material having elasticity so that it can easily follow the deformation of the gripping part 11. In addition, various ideas can be given to the surface of the cover member from the viewpoints of ease of gripping, non-slip properties, and / or pleasant feel. For example, the surface of the cover member may have a grained, raised, and / or non-slip surface.

[0102] In this embodiment, the cover member 17 covers the entire outer peripheral surface of the grip portion 11, improving the tactile sensation when the user grips the grip portion 11. Furthermore, by employing a cover member 17 having a pattern on its surface, the design of the grip 1B can be improved. Other configurations and actions and effects of the grip 1B of this embodiment are similar to those of the grip 1 according to the above-mentioned embodiment 1.

[0103] [Embodiment 3] A grip 1C according to a third embodiment of the present invention will be described with reference to Fig. 5. The grip 1C according to this embodiment is applied to a saw 2 (see Fig. 1) like the grip 1 according to the first embodiment described above. The configuration other than the grip 1C is the same as that of the saw 2 in the first embodiment described above. Below, the configuration of the grip 1C according to this embodiment will be described, focusing on the configuration different from the grip 1 according to the first embodiment.

[0104] The grip 1C is fixed to the base end (in other words, the rear end) of the saw body 21 (see FIG. 1). The grip 1C has a holding portion 11C, a first support portion 12 (see FIG. 1), a second support portion 13 (see FIG. 1), and a support portion 14. The first support portion 12, the second support portion 13, and the support portion 14 are similar to the first support portion 12, the second support portion 13, and the support portion 14 in the first embodiment.

[0105] The grip portion 11C has a multi-layer structure, specifically, the grip portion 11C is made of a single sheet-like member that is wound into layers.

[0106] A radially inner end 116a of the grip portion 11C is welded to the layer one layer further outward, and a radially outer end 116b of the grip portion 11C is welded to the layer one layer further inward.

[0107] In this embodiment, the grip portion 11C is composed of one sheet-like member. The sheet-like member is composed of a 4-methyl-1-pentene polymer. The 4-methyl-1-pentene polymer constituting the sheet-like member may be a polymer containing at least 4-methylpentene, and is preferably a polymer of 4-methyl-1-pentene and a linear α-olefin having 2 to 3 carbon atoms.

[0108] That is, the 4-methyl-1-pentene polymer preferably contains a structural unit derived from 4-methyl-1-pentene and a structural unit derived from a linear α-olefin having 2 to 3 carbon atoms. The structural ratio of these is appropriately selected according to the desired physical properties.

[0109] However, the grip part may be composed of two or more sheet-like members. In this case, at least one sheet-like member is composed of a 4-methyl-1-pentene polymer. All the sheet-like members constituting the grip part may be composed of a 4-methyl-1-pentene polymer.

[0110] In addition, when the gripping portion is composed of two or more sheet-like members, at least one of the sheet-like members may be composed of a material other than the 4-methyl-1-pentene polymer, i.e., the gripping portion may have at least one layer (hereinafter, sometimes referred to as a different material layer) composed of a material other than the 4-methyl-1-pentene polymer.

[0111] The position of the different material layer may be set appropriately. The different material layer may be the radially innermost layer in the gripping portion. Also, the different material layer may be the radially outermost layer in the gripping portion. The different material layer disposed radially outermost in the gripping portion may be regarded as a surface member. Also, the different material layer may be an intermediate layer between the radially innermost layer in the gripping portion and the radially outermost layer in the gripping portion.

[0112] In the present embodiment having the above configuration, the properties of the grip portion 11C can be adjusted by changing the length and thickness of the sheet-like material constituting the grip portion 11C. In addition, the properties of the grip portion 11C can be adjusted by changing the number of turns of the sheet-like material (i.e., the number of layers of the grip portion). This configuration can realize the grip portion 11C with a fit that meets the user's preferences at low cost. Other configurations and actions and effects of the grip 1C of this embodiment are the same as those of the grip 1 according to the above-mentioned embodiment 1.

[0113] [Embodiment 4] A grip 1D according to a fourth embodiment of the present invention will be described with reference to Fig. 6. The grip 1D according to this embodiment has a grip portion 11D having a different configuration from the grip portion 11 of the first embodiment described above.

[0114] Specifically, the grip portion 11D is semi-cylindrical. Thus, the shape of the grip portion is not limited to a cylindrical shape like the grip portions 11, 11B, and 11C of the above-mentioned embodiments 1 to 3. The material constituting the grip portion 11D is the same as the material constituting the grip portion 11 in the above-mentioned embodiment 1. The grip portion 11D is deformable.

[0115] The handle 11D is provided on the grip 1D at a portion that comes into contact with a part of the user's hand (for example, a finger) during use.

[0116] The grip portion 11D is fixed to a support member 18. The support member 18 is a semi-cylindrical member. The support member 18 may be made of, for example, wood, metal, or synthetic resin. In the present embodiment, both circumferential ends of the grip portion 11D are fixed to the support member 18. The shape of the support member 18 is not limited to the shape shown in the drawings.

[0117] Moreover, the grip 1D has a support portion 14D. The support portion 14D is semi-cylindrical. The support portion 14D has an outer peripheral surface 143D that fits along an inner peripheral surface 117 of the grip portion 11D. The support portion 14D is fixed to a support member 18. The support portion 14D and the support member 18 may be formed from a single member.

[0118] A semi-cylindrical space 15D exists between the outer peripheral surface 143D of the support portion 14D and the inner peripheral surface 117 of the grip portion 11D. In the present embodiment, no member is disposed in the space 15D. In other words, air exists in the space 15D. However, a member (not shown) equivalent to the filling member 16 in the above-mentioned second embodiment may be provided in the space 15D.

[0119] In the present embodiment having the above configuration, when the user's fingers grip grip portion 11D, the user's heat is transferred to grip portion 11D. As a result, grip portion 11D becomes more likely to deform. In this state, when the user increases the gripping force, the user's hand pushes grip portion 11D radially inward.

[0120] Then, grip portion 11D deforms radially inward. At this time, the outer peripheral surface of grip portion 11D deforms to fit the user's hand. As a result, the fit between the user's hand and grip portion 11D improves.

[0121] Furthermore, the amount of radial inward deformation of the grip portion 11D is set by the distance between the outer peripheral surface 143D of the support portion 14D and the inner peripheral surface 117 of the grip portion 11D. By changing the support portion 14D, the distance between the outer peripheral surface 143D of the support portion 14D and the inner peripheral surface 117 of the grip portion 11 can be changed. In other words, by changing the support portion 14D, the amount of radial inward deformation of the grip portion 11D can be changed. As a result, a grip 1D that can achieve a fit that meets the user's preferences can be provided.

[0122] [Embodiment 5] A grip 1E according to a fifth embodiment of the present invention will be described with reference to Fig. 7. Grip 1E according to this embodiment has a grip portion 11E and a support portion 14E having different configurations from grip portion 11 and support portion 14 of the first embodiment described above.

[0123] Specifically, the thickness dimension of the grip portion 11E varies in the circumferential direction of the grip portion 11E. Also, the cross-sectional shape of the support portion 14E is a solid circular shape. Therefore, the shape of the annular space 15E existing between the small-diameter inner peripheral surface 113 of the grip portion 11E and the outer peripheral surface 143 of the support portion 14E is also different from the shape of the space 15 in the above-mentioned first embodiment.

[0124] In this embodiment, the radial distance of the space 15E varies in the circumferential direction. Specifically, the radial distance of the space 15E is smaller in the portion where the thickness dimension of the grip portion 11E is larger.

[0125] In this embodiment, the radial distance of the space 15E in the left half portion in FIG. 7 is greater than the radial distance of the space 15E in the right half portion in FIG.

[0126] Therefore, when gripped by a user, the amount of deformation of the left half of grip portion 11E is greater than the amount of deformation of the right half of grip portion 11E. That is, in this embodiment, the amount of deformation of grip portion 11E varies in the circumferential direction of grip portion 11E. The amount of deformation of the grip portion may be considered as the amount by which the grip portion can deform.

[0127] Such a grip portion 11E can be applied to a grip 341 of a power tool 34 shown in Fig. 10d described below, etc. In this case, the left half of the grip portion 11E may be disposed in a portion that is touched by the pad of a user's finger when the grip portion 11E is held by the user.

[0128] On the other hand, the right half of the grip portion 11E may be disposed in a portion that is touched by the palm of the user when the grip portion 11E is gripped by the user. The position of the grip portion 11E may be determined according to the purpose of the device in which the grip portion 11E is incorporated and the preference of the user.

[0129] Other configurations, functions, and effects of the grip 1E of this embodiment are similar to those of the grip 1 according to the first embodiment described above.

[0130] [Embodiment 6] A grip 1F according to a sixth embodiment of the present invention will be described with reference to Fig. 8. The grip 1F according to this embodiment has a gripping portion 11F and a support portion 14F different in configuration from the gripping portion 11F and the support portion 14F of the first embodiment described above.

[0131] Specifically, the grip portion 11F is cylindrical with a circular cross-sectional shape. The support portion 14F is solid with a circular cross-sectional shape. 11 and the central axis O of the support part 14F 14 are parallel and eccentric.

[0132] Therefore, the shape of an annular space 15F existing between the small diameter inner peripheral surface 113 of the grip portion 11F and the outer peripheral surface 143 of the column portion 14F also differs from the shape of the space 15 in the first embodiment described above.

[0133] In this embodiment, the radial distance of the space 15F varies in the circumferential direction. Specifically, the radial distance of the space 15F in the left half in FIG. 8 is greater than the radial distance of the space 15F in the right half in FIG. 8.

[0134] Therefore, when gripped by a user, the amount of deformation of the left half of grip portion 11F is greater than the amount of deformation of the right half of grip portion 11F. That is, in this embodiment, the amount of deformation of grip portion 11F varies in the circumferential direction of grip portion 11F.

[0135] Such a grip portion 11F can be applied to a grip 341 of a power tool 34 shown in Fig. 10d described below, etc. In this case, the left half of the grip portion 11F may be disposed in a portion that is touched by the pad of a user's finger when the grip portion 11F is held by the user.

[0136] On the other hand, the right half of the grip portion 11F may be disposed in a portion that is touched by the palm of the user when the grip portion 11F is gripped by the user. The position of the grip portion 11F may be determined according to the purpose of the device in which the grip portion 11F is incorporated and the preference of the user.

[0137] Other configurations, functions, and effects of the grip 1F of this embodiment are similar to those of the grip 1 according to the first embodiment described above.

[0138] [Embodiment 7] A grip 1G according to a seventh embodiment of the present invention will be described with reference to Fig. 9. The grip 1G according to this embodiment has a gripping portion 11G and a support portion 14G which are different in configuration from the gripping portion 11 and the support portion 14 in the first embodiment described above.

[0139] Specifically, the grip portion 11G is tubular with a circular cross section, and the support portion 14G is solid with a circular cross section, and the outer diameter of the center portion of the support portion 14G in the axial direction is smaller than the outer diameters of both ends in the axial direction.

[0140] In the cross-sectional shape shown in FIG. 9, the outer diameter of the support column 14G curvedly decreases from both axial ends toward the center in the axial direction.

[0141] Therefore, the shape of an annular space 15G existing between the small-diameter inner peripheral surface 113 of the grip portion 11G and the outer peripheral surface 143 of the column portion 14G also differs from the shape of the space 15 in the first embodiment described above.

[0142] In the present embodiment, the radial distance of the space 15G increases from both ends in the axial direction toward the center in the axial direction.

[0143] Therefore, when gripped by a user, the amount of deformation of the central portion in the axial direction of grip portion 11G is greater than the amount of deformation of both ends in the axial direction of grip portion 11G. That is, in this embodiment, the amount of deformation of grip portion 11G differs in the axial direction of grip portion 11G.

[0144] The user can obtain a fit according to his / her preference by changing the position of the grip portion 11G that is gripped. The other configurations, actions, and effects of the grip 1G of this embodiment are similar to those of the grip 1 according to the first embodiment described above.

[0145] (Additional Note) In the above-described embodiments, the grip according to the present invention is applied to a saw. However, the grip according to the present invention can be applied to various devices having a portion that is gripped by a user.

[0146] Specifically, the grip according to the present invention can be applied to a grip 311 of a hanging strap 31 shown in Fig. 10a. The grip according to the present invention can also be applied to a grip 321 of a walking stick 32 shown in Fig. 10b. The grip according to the present invention can also be applied to a grip 331 of a golf club 33 shown in Fig. 10c.

[0147] The grip according to the present invention can also be applied to a grip 341 of a power tool 34 shown in Fig. 10d. The grip according to the present invention can also be applied to a grip 351 of a hammer 35 shown in Fig. 10e.

[0148] Furthermore, although not shown in the drawings, the grip according to the present invention can be applied to various devices having a grip to be held by a user. Specifically, the grip according to the present invention can be applied to the following devices: (1) Sports Bats, golf clubs, various rackets (tennis, table tennis, badminton, lacrosse, hockey), archery, kyudo, kendo, fencing, ski poles, climbing poles, skipping ropes, whips, oars, etc. (2) Training Dumbbells, expanders, hand grips, various training equipment, etc. (3) Tools Hammer, saw, drill, screwdriver, pliers, file, knife, wrench, nippers, soldering iron, etc. (4) Vehicles Car handlebars, bicycle handlebars, motorcycle handlebars, straps, various operating levers, baby strollers, etc. (5) Stationery Various pens, brushes, cutters, etc. (6) Electrical appliances Vacuum cleaners, irons, hair dryers, etc. (7) Kitchen Kitchen knives, pots, pans, forks, knives, spoons, pestle, etc. (8) Daily necessities Showers, watering nozzles, brooms, watering cans, walking sticks, crutches, bags, toothbrushes, etc. (9)Other Umbrellas, microphones, fishing rods, nets, game controllers, selfie sticks, telephone receivers, drumsticks, various playground equipment, carts, various handrails and handles, etc.

[0149] Furthermore, the cross-sectional shape of the gripping portion is not limited to an ellipse like the gripping portion 11 in the above-described embodiment 1. The cross-sectional shape of the gripping portion may be a circle, a polygon, etc. When the cross-sectional shape of the gripping portion is a polygon, the corners may be rounded.

[0150] The gripping portion may have a surface shape that is aligned with the user's finger in advance. In this configuration, the user can easily recognize the position of the gripping portion. The central axis of the gripping portion in the axial direction may not be a straight line. In other words, the central axis of the gripping portion in the axial direction may be curved. [Industrial Applicability]

[0151] The present invention can be applied to a variety of devices that have a grip that a user holds. [Explanation of symbols]

[0152] 1, 1A, 1B, 1C, 1D, 1E, 1F, 1G Grip 11, 11C, 11D, 11E, 11F, 11G Grip 111, 112 Large diameter inner surface 113 Small diameter inner surface 114, 115 Stepped section 116a Inner edge 116b Outer edge 117 Inner surface 12, 12B First support part 121 First insertion tube part 122 Outer surface 123 Inner surface 13, 13B Second support part 131 Second insertion tube part 132 Outer surface 133 Inner surface 14, 14B, 14D, 14E, 14F, 14G Post section 141 First end 142 Second end 143, 143D outer surface 15, 15D, 15E, 15F, 15G space 16 Filling material 17 Cover member 18 Support member 2 saws 21 saw blade 22 First sawtooth 23 Second Sawtooth 31 Hanging strap 311 Grip 32 Cane 321 Grip 33 Golf Clubs 331 Grip 34 Power tools 341 Grip 35 Hammer 351 Grip

Claims

1. A grip having a deformable gripping portion, The gripping portion is made of a resin member having at least one maximum temperature of loss tangent (tan δ) in the range of 10° C. to 100° C., the maximum temperature being determined by dynamic viscoelasticity measurement under the conditions of a temperature rise rate of 4° C. / min, a frequency of 1.59 Hz, and a strain of 0.1%, and the maximum value of the loss tangent being 0.5 to 3.

5. grip.

2. The gripping portion is hollow. The grip of claim 1.

3. the gripping portion is made of a 4-methyl-1-pentene polymer, The 4-methyl-1-pentene polymer contains a structural unit derived from 4-methyl-1-pentene and a structural unit derived from a linear α-olefin having 2 to 3 carbon atoms. The grip of claim 1.

4. The 4-methyl-1-pentene polymer is a foam. The grip according to claim 3.

5. Further provided with a support portion facing the inner surface of the grip portion through a space, The grip of claim 1.

6. Further comprising a filling member disposed inside the gripping portion. The grip of claim 1.

7. The grip portion has a multi-layer structure. The grip of claim 1.

8. The gripping portion has at least one layer composed of a material other than a 4-methyl-1-pentene polymer.

8. The grip of claim 7.

9. The gripping portion is composed of a sheet-like resin member wound in layers.

8. The grip of claim 7.

10. The grip further includes a surface member that is composed of a material other than a 4-methyl-1-pentene polymer and covers the outer surface of the grip.

8. The grip of claim 7.

11. A support portion facing an inner surface of the grip portion with a space therebetween; A first support portion and a second support portion supporting both ends of the grip portion and both ends of the support portion, The grip of claim 1.

12. The deformation amount of the grip portion varies in the circumferential direction of the grip portion. The grip of claim 1.

13. The deformation amount of the grip portion varies in the axial direction of the grip portion. The grip of claim 1.

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