JP6660454B2 - Tool holder - Google Patents

Description

  The present invention relates to a tool holder.

  Multiple tools are used in civil engineering, construction, plumbing, and other construction sites. Examples of the plurality of tools include a cutting tool and a loosening tool used by being attached to a driving rotary tool such as an impact wrench or an impact driver.

For example, in the workplace where the worker changes the work place and performs the work, such as work at height,
If a plurality of tools are stored in a box-shaped case or the like, it is necessary to carry the tools, which may impair work efficiency. In addition, if a plurality of tools are stored in the case or the like regardless of the work place, it is complicated to insert and remove the tools.

Therefore, conventionally, a worker has to use a plurality of tools used in these construction sites in a waist bag (described below,
(See Patent Document 1). The waist bag is usually attached to a belt worn by the worker on his / her waist, a belt through clothing, or a carabiner.

JP 2009-248254 A

  When a plurality of tools are stored in the waist bag, the operator needs to specify a desired tool from the waist bag and take it out of the waist bag. However, since the waist bag is generally attached to the back side of the worker's waist, the worker has to groping for the tool in the waist bag. Specifying a tool by this groping is complicated or difficult. In addition, since the tools carried as described above may include cutting tools, the operator must carefully remove the tools from the waist bag so as not to hurt his hands. In this case, the removal operation of the tool is more complicated.

  In addition, in the case of working at a high place, the operator must not drop the tool from the opening of the waist bag. In the case of working at height, falling objects lead to structural damage and physical risks to other workers. As a countermeasure, when the opening is closed to prevent the tool from dropping from the waist bag, the operator must temporarily remove a cover or the like closing the opening when taking out the tool. In addition, it is necessary to take out the tool and then close the opening again.

  That is, an effective method for carrying a plurality of tools has not been proposed.

  The present invention has been made to provide an effective means for carrying a plurality of tools.

  The tool holder according to the embodiment holds a tool that can be attached to a driving rotary tool having an insertion angle at a tip. This tool holder includes a shaft portion, an operation portion, a main body portion, and a hanging portion. The main body has an opening at at least one end, and has a hollow portion for accommodating the shaft portion so that the shaft portion can advance and retreat in the axial direction to the other end side. The hanging portion is provided on one end side of the operation portion or the main body. A predetermined range on the other end side of the main body is formed in a shape corresponding to the insertion angle. Further, in a predetermined range of the other end side of the main body, the operation portion is pushed to the other end side, and the shaft portion is pushed into the other end side, so that the engagement of the tool is released, and the shaft portion is moved to the one end side. Upon movement, an engagement means is provided for engaging the tool. A finger hook is further provided, and the finger hook can be hung by the user when the shaft is pressed.

  According to the embodiment, it is possible to hold or remove a tool that can be attached to the driving rotary tool having the insertion angle at the tip simply by relatively displacing the shaft portion and the main body portion. Therefore, the operator can hold a plurality of such tools regardless of the work place, and can remove and hold the tools by a simple operation. As a result, work efficiency can be improved.

FIG. 2 is a schematic perspective view showing a tool holder according to the first embodiment. FIG. 2 is a schematic front view showing the tool holder according to the first embodiment. FIG. 3 is a schematic sectional view taken along line A-A ′ of FIG. 2. FIG. 2 is a schematic top view illustrating the tool holder according to the first embodiment. FIG. 2 is a schematic bottom view showing the tool holder according to the first embodiment. FIG. 2 is a schematic rear view illustrating the tool holder according to the first embodiment. The schematic left side view showing the tool holder of a 1st embodiment. FIG. 2 is a schematic right side view illustrating the tool holder according to the first embodiment. The schematic B-B 'sectional drawing of FIG. FIG. 3 is a schematic perspective view illustrating a released state of the tool holder according to the first embodiment. FIG. 4 is a cross-sectional view taken along the line A-A ′ showing a state in which the state of FIG. FIG. 10 is a B-B ′ cross-sectional view illustrating a state where the state has shifted from the engaged state to the released state in FIG. FIG. 3 is an enlarged view showing an engagement state between a sphere S and an engaged portion of a tool. FIG. 4 is a perspective view showing a state in which a hanging portion is provided on the tool holder according to the first embodiment. FIG. 9 is a schematic perspective view illustrating an engagement state of a tool holder according to a second embodiment. Sectional drawing which shows the engagement state of the tool holder of 2nd Embodiment. The conceptual diagram showing the outline of the elastic member of the tool holder of a 2nd embodiment. FIG. 9 is a schematic perspective view showing a released state of the tool holder according to the second embodiment. Sectional drawing which shows the release state of the tool holder of 2nd Embodiment.

  The tool holder according to the first to third embodiments will be described with reference to FIGS.

[First Embodiment]
The overall configuration of the tool holder 100 according to the first embodiment will be described with reference to FIGS. 1, 2, and 4 to 8, schematic views of a perspective view, a front view, a top view, a bottom view, a back view, a left side view, and a right side view of the tool holder 100 according to the first embodiment are shown. 3 shows an AA ′ section of FIG. 2, that is, one section of the tool holder 100. 9 shows a cross section taken along the line BB ′ of FIG. 7, that is, another cross section of the tool holder 100. 3 and 9 are along the axial direction of the tool holder 100. FIG. 3 shows a cross section viewed from a direction perpendicular to the depth direction of the first concave portion 124 of the shaft portion 120 and the longitudinal direction of the main body portion 110. FIG. 9 shows a cross section viewed from a direction parallel to the depth direction of the first concave portion 124 and orthogonal to the longitudinal direction of the main body 110. In FIGS. 3 and 9, a part of the shaft part 120 is shown by a cross section with hatching, and the other part is shown as an end face for understanding the shape of the shaft part 120.

  In each of the drawings and the following description, the axial direction of the tool holder 100 is referred to as the vertical direction. The left-right direction and the front-back direction will be described with reference to the up-down direction. Further, the front surface of the tool holder 100 may be described as “front” and the surface opposite to the front may be described as “back”. However, these directions are set for convenience of description of the embodiment, and are not intended to specify the use state of the tool holder 100 and the like, and the up, down, front, rear, left, and right are appropriately changed according to the state at that time. It is a good thing.

  Further, as a tool held by the tool holder 100 of the present embodiment, a socket which can be tightened with a bolt or a nut by being attached to an insertion angle of an impact wrench is cited. The tool is not limited to such a tool for tightening and loosening work, but may be a cutting tool or a polishing tool such as a socket drill chuck, a core drill, a step drill, a hole saw, or the like. Alternatively, the tool held by the tool holder 100 may be a cutting member connection structure (such as an attachment) as disclosed in Japanese Patent Application No. 2014-109479. Furthermore, the tool holder 100 of the present embodiment can hold another member that can be attached to a driving rotary tool having an insertion angle, such as an impact wrench or an air impact.

(Overview of overall configuration)
As shown in FIGS. 1 to 3, the tool holder 100 includes a main body 110 and a shaft 120. Inside the main body 110 (FIG. 3), a hollow portion H is formed along the longitudinal direction. Hereinafter, the longitudinal direction of the main body 110 or the longitudinal direction of the hollow portion H may be simply referred to as “axial direction”. The main body 110 houses the shaft 120 in the hollow portion H. A part of the shaft part 120 is exposed (projects) from the first opening 116a provided at the axial end of the main body part 110.

  Further, as shown in FIG. 3, the shaft portion 120 is urged by the elastic member E in the direction of the first opening 116a (upper side in FIGS. 2 and 3). When the operator performs an operation of pushing the shaft 120 to the opposite side against the urging force, the shaft 120 and the main body 110 are relatively displaced. The spherical body S shown in FIGS. 1 to 3, 5, and 7 sinks toward the inside of the hollow portion H due to the relative displacement between the shaft portion 120 and the main body portion 110. In the tool holder 100, the sphere S is a part of the engagement means for the tool, and when the sphere S sinks into the hollow portion H, the engagement state (see FIG. 13) and the release state of the engagement (see FIG. 11). Hereinafter, each part of the tool holder 100 will be specifically described.

(Main unit 110)
The main body portion 110 movably holds the shaft portion 120 in a hollow portion H inside the main body portion 110, and further holds a sphere S which is a part of the engagement means. The main body 110 holds the sphere S together with the shaft 120, thereby bringing the sphere S into contact with the inner surface of the tool, and these functions integrally as a function of engaging means. The main body 110 has a finger hook 118 formed on the upper end side in FIG. 1 and an engaging portion 112 provided on the lower end side. A space between the engagement portion 112 and the finger hook 118 is formed in a cylindrical shape. However, the portion is not limited to the cylindrical shape, and may be a columnar shape having a plane and a corner, or a columnar shape having a curved surface and a plane.

<First opening 116a, second opening 116b>
As shown in FIGS. 3 and 4, at the upper end in the axial direction of the main body 110 (upper side in FIG. 2),
A first opening 116a is formed toward the lower end. As shown in FIGS. 3 and 5, a second opening 116b is formed at the lower end of the main body 110 in the axial direction. The first opening 116a and the second opening 116b penetrate along the axial direction of the main body 110, and the penetrated portion becomes the hollow portion H. That is, the first opening 116a has a width corresponding to the upper width of the hollow portion H, and the second opening 116b has a width corresponding to the lower width of the hollow portion H. That is, the hollow portion H has a shape that extends to the second opening 116b side substantially without a gradient from the first opening 116a by a predetermined distance (to a first step portion st1 described later) in the axial direction. Further, the hollow portion H has a shape that extends from the portion (first step portion st1 described later) separated from the first opening 116a by the predetermined distance in the axial direction to the second opening 116b side with almost no gradient. .

<Finger hook 118>
The finger hook 118 formed on one end side (upper side in FIG. 2) of the main body 110 in the axial direction has an edge (flange) 118a formed on the edge and a width gradually increasing toward the other end from the edge 118a. And a tapered surface 118b having a gradient such that the diameter becomes smaller (the diameter becomes smaller). The edge portion 118a of the finger hook 118 is formed to be wider (larger in diameter) than the first opening 116a and the tapered surface 118b.

  Also, as shown in FIG. 2 and the like, the width of the tapered surface 118b from the narrowest portion to the cylindrical portion of the main body 110 on the other end side (lower side) gradually increases (the diameter increases). ). The “width” is a length of the main body 110 in a direction perpendicular to the axial direction.

  With the above configuration, the operator (operator) of the tool holder 100 can perform an operation by putting a finger on the finger hook 118 to switch between the engaged state and the released state of the tool. As a result, the attachment / detachment of the tool to / from the tool holder 100 is facilitated, which contributes to an improvement in working efficiency.

  As shown in FIGS. 1 and 3, the second opening 116 b (lower end side) extends from the inside of the edge portion 118 a of the finger hook portion 118 (the upper surface of the shaft portion 120 (see FIG. 4) to the first opening 116 a). ). With this configuration, even if the size of a hanging portion (see FIG. 14) described later is large, it is possible to prevent interference with the upper end surface of the main body portion 110. However, the configuration of the upper end surface of the main body 110 is not limited to this, and may not be concave depending on the size of the hanging portion R (see FIG. 14).

<Engaging part 112>
The engaging portion 112 formed on the other end side (lower side in FIG. 2) of the main body 110 in the axial direction is formed so as to have substantially the same shape as the insertion angle of the driving rotary tool. That is, the other end has a shape resembling a cube or a rectangular parallelepiped. A third opening 114 through which a part of the sphere S can pass is provided on the front surface (FIG. 2) of the engagement portion 112. Further, the above-described second opening 116b is provided on the bottom surface (FIG. 5) of the engaging portion 112. The rear surface (FIG. 6), the left side surface (FIG. 7), and the right side surface (FIG. 8) of the engagement portion 112 are substantially flat. In the description of the embodiment, the front, back, left side, right side, and bottom of the engaging portion 112 are defined for convenience of description, and do not limit the usage of the tool holder 100.

<< third opening 114 >>
The size (opening diameter) of the third opening 114 is such that when the sphere S is most pushed out from the main body 110 (FIG. 3), a part of the sphere S is exposed, and the sphere S is further expanded. It is formed in a size that restricts it from being pushed out. It is desirable that the size of a part of the exposed sphere S at this time corresponds to the size of the engaged portion (see reference numeral A in FIG. 14) on the inner surface of the tool to be held by the tool holder 100. That is, the wider the gap between the engaged portion and the partial area, the larger the contact area of the engagement point (engaged portion A) between the sphere S and the tool T and the more the tool in the tool holder 100 is held. This is because the ability to do is weakened.

  The “partial region of the sphere S” is a region outside the main body 110 from a portion of the sphere S surrounded by the outer edge of the third opening 114 (boundary with the outside). In other words, as shown in FIG. 3, among the contact portions between the outer edge of the third opening 114 and the sphere S, the most distant points (the distance from the center of the sphere S is equal to the radius of the sphere; The area outside the line segment (string) connecting the points) is a "partial area". In the example of FIG. 3, the central angle of the sector formed by the exposed curved surface (arc) and the center of the sphere S is 100 ° to 120 °. In this case, when the length of the line segment (chord) is represented by the ratio to the diameter of the sphere S, it is approximately included in the range of 0.75: 1 to 0.9: 1. Therefore, in the example of FIG. 3, the third opening 114 is formed to have an opening diameter corresponding to this line segment.

<Hollow section H>
As shown in FIG. 3, an upper region (on the side of the first opening 116 a) of the hollow portion H has a width (diameter) that allows the base end of the shaft portion 120 to advance and retreat in the axial direction of the main body portion 110. Further, the hollow portion H can advance and retreat in the axial direction of the main body 110 at a position below the base end of the shaft portion 120 (on the side of the second opening 116b) below the base end of the shaft portion 120. It has a width (diameter). Here, it is desirable that the gap between the inner surface of the main body 110 and the outer surface (side surface) of the shaft 120 be made small enough not to hinder the movement of the shaft 120. In other words, by making the width of the hollow portion H orthogonal to the axial direction of the main body 110 as narrow as possible in accordance with the width of the shaft 120, it is possible to make the main body 110 thinner and reduce the weight of the tool holder 100. it can. In addition, if the main body 110 is configured in this manner, it is possible to prevent unnecessary substances (dust and the like) such as sand from entering the first opening 116a or the second opening 116b.

Further, as shown in FIG. 3, in the hollow portion H, an upper portion accommodating the base end portion (upper side in the figure) of the shaft portion 120 is wider than a lower portion accommodating the small diameter portion of the shaft portion 120. Is widely formed. A first step portion st1 resulting from the difference in width is formed at the boundary between the two.
This step corresponds to an example of the “stopper” of the present invention. The first step portion st1 defines a stroke length when the shaft portion 120 is pressed. The first step portion st1 and the stroke length will be described with reference to FIG.

  FIG. 9 shows an engaged state in the tool holder 100. The engaged state is a state in which a force is not applied to a shaft portion 120 described later in a direction opposite to a biasing direction (upward in the figure) of the elastic member E (see FIG. 13). The position of the base end of the shaft portion 120 is located at the uppermost position (on the side of the first opening 116a) with respect to the main body portion 110. The shaft between the position of the boundary (second step portion st2) between the base end portion and the small diameter portion of the shaft portion 120 in the released state (FIG. 12) and the first step portion st1 of the hollow portion H. The distance in the direction is set to L1 for convenience of explanation.

  The center of the sphere S in the engaged state is defined as a center C1. The center of the first concave portion 124 of the shaft portion 120 described later, that is, the position corresponding to the center of the sphere S in the axial direction is defined as the center C2. Further, the distance between the center C1 and the center C2 in the axial direction is L2. Note that the position of the sphere S in the engaged state corresponds to an example of a “first position”. The position of the sphere S in the released state corresponds to an example of a “second position”.

  When the shaft portion 120 is pressed down toward the second opening 116b (the lower side in the drawing), the second step portion st2 of the shaft portion 120 comes into contact with the first step portion st1 of the hollow portion H. Therefore, the movable range of the shaft portion 120 in the axial direction is limited to L1.

  Further, when the shaft portion 120 is pressed down toward the second opening 116b, the sphere S remains in contact with the third opening 114, and does not move for a while from the position of the third opening 114 in the axial direction. When the movement of the shaft portion 120 toward the second opening 116b proceeds, the sphere S moves to the first concave portion 124 as shown in FIG. I do. The moving distance of the sphere S in the axial direction is L2 as described above.

  When the center of the sphere S moves to the center C2 of the first concave portion 124 (FIGS. 11 and 12), the shaft 120 is moved by the first step portion st1 of the hollow portion H as shown in FIG. The above movement toward the second opening 116b is restricted. Therefore, the distance L1 and the distance L2 are substantially the same.

  That is, in the engaged state, the position of the first step portion st1 of the hollow portion H is located at a distance L2 from the position of the base end of the shaft portion 120 urged by the elastic member E. In this manner, by setting the position of the first step portion st1, when the operator pushes the shaft portion 120, the sphere S goes over the first recess 124 and rides on the third recess 125 described later. The situation can be avoided. When the sphere S rides on the third concave portion 125, the sphere S re-emers from the third opening 114 to the outside of the tool holder 100, which hinders removal of the tool. The first step portion st1 of the hollow portion H contributes to avoid such a situation.

  In other words, unless the position of the first step portion st1 is set as described above, the operator must perform the removal operation while limiting the amount of pressing of the shaft portion 120 when removing the tool from the tool holder 100. . That is, the first step portion st1 contributes to the improvement of the operability of the tool holder 100.

(Shaft 120)
The shaft portion 120 is formed in a shaft shape extending in the longitudinal direction, and is passed through the hollow portion H. The sphere S protrudes and retracts from the third opening 114 of the main body 110 by the shaft portion 120 performing the reciprocating operation in the hollow portion H of the main body 110. As described above, the shaft 120 holds the sphere S together with the main body 110 to bring the sphere S into contact with the inner surface of the tool. That is, they function integrally as an engaging means. The upper end side of the shaft portion 120 in FIG. 3 is a base end portion, and the lower end side from the base end portion is a small diameter portion. The base end portion is formed wider than the small diameter portion, and the boundary portion becomes a step. This step will be described as a second step portion st2.

<Basic end>
In the engaged state shown in FIGS. 3 and 13, 60% or more of the base end of the shaft portion 120 in the axial direction projects from the first opening 116 a of the main body 110. 10 and 11, at least a part of the base end of the shaft portion 120 in the axial direction protrudes from the first opening 116a of the main body portion 110. Further, as shown in FIGS. 1 and 2, a through hole 121 through which a hanging portion R described later is formed is formed on the upper end side of the base end portion of the shaft portion 120. Further, the upper end surface of the shaft portion 120 is formed in a flat shape for the operability of the pressing operation. However, the present invention is not limited to this, and may be a concave surface. Note that the shaft 120 or the base end corresponds to an example of an “operation unit”.

<Small diameter part>
In the small diameter portion of the shaft portion 120, as shown in FIG. 3, on the side surface (outer peripheral surface) along the axial direction,
A first recess 124 that is recessed in a direction perpendicular to the axial direction is provided. In the released state, the first recess 124 faces the third opening 114. A second recess 122 is provided adjacent to the second opening 116b (lower side in the drawing) in the axial direction from the first recess 124. In the engaged state, the second recess 122 faces the third opening 114. In the small-diameter portion of the shaft portion 120, the depth of the second concave portion 122 is shallower (thicker) than the first concave portion 124.
Further, a third recess 125 is provided adjacent to the first opening 116a side (upper side in the drawing) in the axial direction from the first recess 124. The depth of the third recess 125 is also shallower (thicker) than the first recess 124. A wall 123 is provided on the second opening 116b side from the second recess 122. The wall portion 123 has substantially the same width as the widest portion in the small diameter portion of the shaft portion 120.

<< Second recess 122 >>
The second concave portion 122 is provided in a planar shape adjacent to and above the wall portion 123 located closest to the second opening 116b in the axial direction. Here, the size of the sphere S is set in accordance with the size of the engaged portion of the tool (see A in FIG. 13). Therefore, the size of each part of the tool holder 100, such as the thickness, width, length, and depth, is determined so as to correspond to the size of the sphere S. However, strength is required in consideration of breakage and deformation of the tool holder 100. Therefore, the material forming each part also affects the size of each part of the tool holder 100. A specific example of the depth of the second recess 122 is as follows.

  As shown in FIG. 13, first, the size of the sphere S and the height at which the sphere S protrudes from the main body 110 based on the shape and curvature of the engaged portion A of the tool T (a protruding distance from the third opening 114). Is determined. Next, the thickness of the main body 110, that is, the length from the outer surface to the inner surface (the length in the left-right direction in FIG. 3) of the main body 110 is determined by the material forming the sphere S and the main body 110. Thereby, the distance from the protruding end of the sphere S in the engaged state to the inner surface of the main body 110 (the innermost part of the third opening 114) is determined.

  Since the sphere S must be held in the engaged state, it is necessary to support a part of the sphere S on the side surface of the shaft 120 (see FIG. 3). Therefore, the distance from the inner surface of the main body 110 (the innermost part of the third opening 114) to the side surface of the shaft 120 is determined.

  In this way, the length obtained by adding the distance from the innermost part (FIG. 13) of the engaged portion A of the tool T to the opening end of the third opening 114 and the thickness of the main body 110 (first Is the depth of the second concave portion 122.

  Note that the portion of the shaft portion 120 that supports the sphere S in the engaged state is formed as a concave portion (second concave portion 122) so that the wall portion 123 prevents the shaft portion 120 from falling out of the first opening 116a. That's why. As shown in FIG. 3, when the shaft portion 120 is to be moved in the direction of being pulled out from the first opening 116 a in the engaged state, the wall portion 123 comes into contact with the sphere S, and the sphere S Since the shaft portion 120 contacts the upper surface, the shaft portion 120 does not move further toward the first opening 116a. In this manner, the shaft 120 is prevented from coming off. In addition, the second recess 122 makes a part of the shaft portion 120 thinner, which contributes to reducing the weight of the shaft portion 120.

<< First recess 124 >>
As shown in FIGS. 3 and 9, the first recess 124 is formed in an inverted conical shape adjacent to the first opening 116 a side (upper side) of the second recess 122 in the axial direction. The depth of the first recess 124 is greater than the depth of the second recess 122. When the sphere S transitions from the state in contact with the second recess 122 to the state in contact with the first recess 124, the tool holder 100 transitions from the engaged state to the released state. Further, when the shaft portion 120 is pressed down and shifts from the disengaged state of the tool holder 100 to the tool T to the engaged state, the first concave portion 124 has an inverted conical shape, so that the first concave portion 124 has an inclined surface. Thus, the state can be shifted to the state where the second concave portion 122 contacts the sphere S. Therefore, the first concave portion 124 is not limited to the inverted conical shape, but it is desirable that at least the second concave portion 122 be an inclined surface. Since the slope between the bottom of the first recess 124 and the second recess 122 is an inclined surface, the transition of the sphere S can be performed smoothly.

  Like the second recess 122, the first recess 124 also has a shape and a curvature of the engaged portion A of the tool, a size of the sphere S, a height at which the sphere S projects from the main body 110, a sphere S, and The depth is determined according to the material forming the main body 110 and the thickness of the main body 110.

  That is, the first concave portion 124 is provided in order to cause the sphere S to sink to the depth of the hollow portion H and to reduce the height of the sphere S protruding from the third opening 114 as much as possible. When the protrusion height of the sphere S is reduced, the contact area between the sphere S and the engaged portion A of the tool T is reduced, and the operation of removing the tool T from the tool holder 100 becomes possible.

  That is, first, the protrusion height of the sphere S for sinking the sphere S is determined to such an extent that the removal operation of the tool T becomes easy. Next, the distance from the projecting end of the sphere S to the inner surface of the main body 110 (the innermost part of the third opening 114) at that time is determined.

  In this manner, the length (the second length) obtained by adding the distance from the above-mentioned protruding height of the sphere S for sinking the sphere S to the opening end of the third opening 114 and the wall thickness of the main body 110. Is subtracted from the diameter of the sphere S, the depth of the first recess 124 (see FIG. 11).

  The reason why the depth of the first concave portion 124 exceeds the axis center line of the small diameter portion of the shaft portion 120 as shown in the example of FIG. 3 is to reduce the weight of the tool holder 100. However, in consideration of the strength and the manufacturing process, it is necessary to prevent the first concave portion 124 from becoming too thin. For example, when quenching plating is performed in the manufacturing process of the shaft portion 120, if the first concave portion 124 of the shaft portion 120 is too thin, the shaft portion 120 may be curved during quenching. However, the above is an example, and the manufacturing process of the shaft 120 is not limited.

<< third recess 125 >>
As shown in FIGS. 3 and 9, the third recess 125 is formed in a planar shape adjacent to the first recess 124 on the first opening 116a side (upper side) in the axial direction. The depth of the third recess 125 is smaller than the depth of the first recess 124. Note that, as described above, even if the shaft portion 120 is pushed deeply toward the first opening 116a by the operator, the sphere S does not shift to the third concave portion 125 due to the first step portion st1 of the hollow portion H. .

  The reason why the third concave portion 125 is shallower than the first concave portion 124 is, similarly to the first concave portion 124, for the reason of strength and the above-described manufacturing process (such as quenching).

<Sphere S>
The sphere S is an engagement unit that engages with the engaged portion A of the tool T. The sphere S is an engagement means used when the inner surface of the engaged portion A of the tool T is curved, and the shape of the inner surface of the engaged portion A has another shape (a plurality of planes, flat surfaces, etc.). If it is a combination of curved surfaces), it is formed according to the shape. However, if the curved surface is used as in this embodiment, the positioning of the sphere S with respect to the engaged portion A becomes easy.

<Elastic member E>
As the elastic member E, a spring, rubber, or the like is used, and the elastic member E urges the shaft portion 120 toward the first opening 116a. The elastic member E is provided between the first step portion st1 in the hollow portion H and the second step portion st2 of the shaft portion 120. For example, the elastic member E is wound around the small diameter portion at the upper end side of the small diameter portion of the shaft portion 120. When the shaft portion 120 receives a pressing operation toward the second opening 116b, the elastic member E contracts, and the shaft portion 120 moves toward the second opening 116b against the urging force of the elastic member E. When the pressing force by the operation is released, the shaft 120 returns to the original position by the restoring force of the elastic member E. The elastic member E 'corresponds to an example of "biasing means".

(motion)
Next, the transition of the tool holder 100 from the engaged state to the released state will be described with reference to FIGS. 1, 3, and 10 to 13. FIG. 10 is a schematic perspective view showing a released state of the tool holder 100 according to the first embodiment. FIG. 11 is a cross-sectional view taken along the line AA ′ showing a state where the state of FIG. FIG. 12 is a cross-sectional view taken along the line BB ′ showing a state in which the state has shifted from the engaged state to the released state in FIG. 9. FIG. 13 is an enlarged view showing the engaged state of the engaged portion A of the sphere S and the tool T.

<Engagement state>
When the shaft 120 is not pressed down as shown in FIGS. 1, 3 and 9, the shaft 120 is positioned at the upper end by the elastic member E. At this time, the wall portion 123, the sphere S, and the third opening 114 are configured so that the shaft portion 120 does not come off from the first opening 116a. At this time, while the engaged portion A of the tool T and the sphere S are in contact with each other as shown in FIG. 13, the sphere S The position with respect to the part 110 is maintained.

<Release state>
As shown in FIGS. 10 to 12, when the shaft 120 is pressed down, the elastic member E is contracted against the urging force of the elastic member E by the pressing force, and the shaft 120 is moved to the lower end side. You. As a result, the sphere S moves from the state of contact with the second recess 122 to the innermost side of the first recess 124 via the inclined surface of the first recess 124. In this embodiment, the shaft 120 is actually displaced with respect to the sphere S by the relative displacement between the main body 110 and the shaft 120, instead of the sphere S moving.

  By this operation, the sphere S sinks to the first concave portion 124 side, and the contact area of the sphere S with the engaged portion A is reduced or no more. When the contact stops, most of the area of the sphere S is housed in the main body 110.

(Hanging part R)
As shown in FIGS. 1, 2, and 14, a through hole 121 through which a hanging portion R described later is formed is formed on the upper end side of the base end portion of the shaft portion 120. An annular hanging portion R as shown in FIG. The hanging portion R allows the tool holder 100 to be attached to a belt worn on the waist of an operator, a belt loop of clothing, a carabiner, or the like. The hanging portion R has a detachable portion for a carabiner (not shown). It should be noted that any shape, material, and size of the hanging portion R can be used. Further, the configuration in which the hanging portion R is passed through the main body 110 is not limited to the configuration passed through the through hole 121. In addition, it is also possible to fix to the shaft portion 120 and the main body portion 110, but in that case, it is necessary to secure sufficient strength.

(Action / Effect)
The operation and effect of the tool holder 100 according to the first embodiment described above will be described.

  According to the tool holder 100 of the embodiment, by simply displacing the shaft portion 120 and the main body portion 110 relatively, a tool that can be attached to a driving rotary tool having an insertion angle at a tip is held or removed. be able to. Therefore, the operator can hold a plurality of such tools regardless of the work place, and can remove and hold the tools by a simple operation. As a result, work efficiency can be improved.

Further, since the tool holder 100 is attached to a belt, a belt passer, a carabiner, or the like,
Even when a plurality of tool holders 100 are used, a tool can be specified at a glance.
Alternatively, when a plurality of tool holders 100 are used and the tool holders 100 are attached to the back of the operator, the tool holders 100 are independent of each other, so that even when groping, the plurality of tools do not interfere with each other, and the identification of the tools can be performed. It is easier than the conventional one.
Further, even when the operator carries the cutting tool with the tool holder 100, it is easier to specify the cutting tool than when carrying it with the waist bag, so that it is possible to avoid problems such as injury to his hands.

  In the tool holder 100, the tool is not removed unless a pressing operation for releasing the engagement is performed, so that it is possible to prevent the operator from dropping the tool even when working at a high place. As described above, the tool holder 100 improves the work efficiency of the worker.

  Further, by forming the recess from the edge 118a of the finger hook 118 to the first opening 116a toward the second opening 116b (lower end side), even if the size of the hanging portion R is large, It is possible not to interfere with the upper end surface of the main body 110.

  Further, by making the width of the hollow portion H orthogonal to the axial direction of the main body portion 110 as narrow as possible in accordance with the width of the shaft portion 120, the main body portion 110 can be made thinner and the weight of the tool holder 100 can be reduced. . In addition, with this configuration, it is possible to prevent an unnecessary object (dust or the like) such as sand from entering the first opening 116a or the second opening 116b.

Further, according to the above embodiment, the movable range of the shaft portion 120 is set by the first step portion st1.
The distance is limited to a distance L2 from the center C1 of the sphere S in the axially engaged state to the center C2 of the first recess 124. According to such a configuration, it is possible to avoid a situation in which the sphere S rides on the third recess 125 described later beyond the first recess 124. When the sphere S rides on the third concave portion 125, the sphere S re-emers from the third opening 114 to the outside of the tool holder 100, which hinders removal of the tool. The first step portion st1 of the hollow portion H contributes to avoid such a situation.

[Modification]
A modified example of the first embodiment will be described. However, the tool holder 100 of the first embodiment is effective in that at least a part of the manufacturing process can be simplified from the following modified examples.

(Modification 1)
In the above embodiment, the movable range of the shaft portion 120 is limited by the first step portion st1, but the present invention is not limited to such a configuration. For example, a protrusion is provided on the side surface of the shaft portion 120, and a concave portion for receiving the protrusion is provided on the inner surface of the main body 110. In this configuration, by making the length of the concave portion in the axial direction correspond to the distance L2, the movable range of the shaft portion 120 can be limited.

(Modification 2)
In the above embodiment, the movable range of the shaft portion 120 is limited by the first step portion st1, but the present invention is not limited to such a configuration. If the surface of the first recess 124 on the first opening 116a side is not an inclined surface but a surface orthogonal to the axial direction, the state in which the sphere S contacts the third recess 125, that is, the sphere S re-emerges Can be prevented.

(Modification 3)
In the above-described embodiment, the third recess 125 is provided. However, even without providing the third recess 125, at least a part of the effects of the first embodiment can be achieved.

[Second embodiment]
Next, a tool holder 100 according to a second embodiment will be described with reference to FIGS.
FIG. 15 is a schematic perspective view showing the engagement state of the tool holder 200 according to the second embodiment.
FIG. 16 is a cross-sectional view illustrating an engaged state of the tool holder 200 according to the second embodiment.
FIG. 17 is a conceptual diagram schematically illustrating an elastic member of the tool holder 200 according to the second embodiment.
FIG. 18 is a schematic perspective view showing a released state of the tool holder 200 according to the second embodiment.
FIG. 19 is a sectional view showing a released state of the tool holder 200 according to the second embodiment. The description of the same parts as in the first embodiment is omitted.

  As shown in FIGS. 15 and 16, unlike the first embodiment, the tool holder 200 according to the second embodiment is in the engaged state at the position where the shaft 220 is pressed down most. When the shaft 220 receives a pulling operation from the engaged state, the shaft 220 is released. That is, in a state where the second step portion st2 of the shaft portion 220 is in contact with the first step portion st1 of the hollow portion H, the sphere S comes into contact with the second concave portion 222 and protrudes from the main body portion 210. , Engages with the engaged portion A of the tool T.

From this state, when the shaft portion 220 receives a pulling operation toward the first opening 216a (FIG. 18),
The state where the sphere S comes into contact with the first concave portion 224 via the inclined surface of the first concave portion 224 is shifted (FIG. 19). That is, the center of the sphere S moves to the bottom side of the first recess 224 and sinks in the main body 210. In the example shown in FIG. 16, the main body 210 has substantially the same configuration as the main body 110 of the first embodiment. On the other hand, the shaft 220 has a different configuration from the shaft 120 of the first embodiment. Hereinafter, the shaft 220 of the second embodiment will be described.

(Shaft 220)
As shown in FIG. 16, the shaft portion 220 is formed in a shaft shape extending in the longitudinal direction, and is passed through the hollow portion H. As in the first embodiment, the sphere S is made to protrude and retract by the shaft portion 220 moving forward and backward in the hollow portion H of the main body 210, and the function of the engaging means while holding the sphere S together with the main body 210 is the same as in the first embodiment. is there. Also in the second embodiment, the shaft portion 220 has a base end portion and a small diameter portion, and the boundary portion functions as a second step portion st2.

<Basic end>
In the engagement state shown in FIG. 16, about 30% of the base end of the shaft 220 in the axial direction is
It protrudes from the first opening 216a of the main body 210. Also in the release state shown in FIGS. 18 and 19, 60% or more of the base end of the shaft 220 in the axial direction projects from the first opening 216a of the main body 210. The through-hole 221 through which the hanging portion R passes has the same configuration as the through-hole 121, and the upper end surface of the shaft 220 is also the same as in the first embodiment.

<Small diameter part>
In the small-diameter portion of the shaft portion 220, as shown in FIG. 16, from the lower end in the axial direction (the end on the side of the second opening 216b), the wall portion 223, the first concave portion 224, and the second The difference from the first embodiment is that the concave portions 222 are provided in this order. Further, the second embodiment differs from the first embodiment in that the third concave portion 125 is not provided.

<< First recess 224 >>
As shown in FIG. 16, the first concave portion 224 is formed in an inverted conical shape adjacent to the first opening 116a side (upper side) from the lower wall portion 223 in the axial direction. The relationship between the depth of the first recess 224 and the depth of the second recess 222 is similar to the relationship between the first recess 124 and the second recess 122 of the first embodiment.

  Therefore, when the state where the sphere S is in contact with the first recess 224 is changed to a state in which it is contacted with the second recess 222, the tool holder 200 is changed from the released state to the engaged state. When the pulling operation of the shaft portion 220 is released, the state is shifted to a state where the second concave portion 222 comes into contact with the sphere S via the inclined surface of the first concave portion 224. The depth of the first recess 224 is the same as that of the first recess 124 of the first embodiment.

<< Second recess 222 >>
The second recess 222 is provided in a planar shape adjacent to and above the first recess 224 in the axial direction. The depth of the second recess 222 is the same as that of the second recess 122 of the first embodiment.

<Elastic member E '>
A spring, rubber, or the like is used as the elastic member E ′, and the shaft 220 is urged toward the second opening 216b by the elastic member E ′. The position where the elastic member E 'is provided is the same as in the first embodiment. The manner in which the elastic member E 'is provided is similar, for example, in that the elastic member E' is wound around a small-diameter portion, but one end and the other end in the axial direction of the elastic member E 'are respectively provided with a first step portion st1 and a second step portion. It is different in that it is held in the section st2.

  For example, as shown in FIG. 17, the upper end of the elastic member E ′ is held by the second step portion st2 of the shaft portion 220, and the lower end is held by the first step portion st1 of the main body portion 210. For example, the second step portion st2 and the first step portion st1 each have a fixing means (not shown) for fixing the end of the elastic member E '.

  When the shaft portion 220 receives a pulling operation toward the first opening 116a, the elastic member E ′ expands (see the distance L3 in FIG. 17), and the shaft portion 220 moves in the first direction against the urging force of the elastic member E. Move to the side of the opening 216a, and enter the release state. When the tensile force due to the operation is released, the shaft portion 220 returns to the original position by the restoring force of the elastic member E '.

(Action / Effect)
The tool holder 200 according to the second embodiment described above also holds a tool that can be attached to a driving rotary tool having an insertion angle at the tip simply by relatively displacing the shaft 220 and the main body 210. Can be removed or removed. Therefore, the operator can hold a plurality of such tools regardless of the work place, and can remove and hold the tools by a simple operation. As a result, work efficiency can be improved.

[Third embodiment]
Next, a tool holder according to a third embodiment will be described with illustration omitted. In the third embodiment, the engagement may be performed when the amount of protrusion of the shaft with respect to the main body is the largest as in the first embodiment, or the shaft with respect to the main body may be configured as in the second embodiment. The configuration may be such that the engagement state is achieved when the amount of protrusion of is small.

  In the third embodiment, the configuration of the hollow portion in the main body and the configuration of the outer peripheral surface of the shaft portion are different. That is, the side surface of the small diameter portion in the shaft portion is provided with a spiral projecting portion such as a male screw, not a concave portion. On the other hand, a female screw for receiving the male screw is provided in the hollow portion of the main body at a position corresponding to the male screw of the shaft portion. That is, the shaft portion is rotatable in the hollow portion around the shaft, and the rotation is guided by the female screw relative to the male screw.

When the shaft portion is rotated in a predetermined direction (for example, rightward direction), the shaft portion advances inside the hollow portion toward the second opening side,
When rotated in the opposite direction, the inside of the hollow portion retreats toward the first opening.

  When the third embodiment is configured to be in the engagement state when the amount of projection of the shaft portion with respect to the main body portion is the largest as in the first embodiment, the lower end of the small diameter portion is thicker and gradually becomes smaller toward the upper end. The structure becomes thinner. The distance from the small diameter portion to the protruding end of the spherical body S in the engaged state is the same as that of the second recess 122. The distance from the small-diameter portion to the protruding end of the sphere S in the released state is the same as in the case of the first recess 124.

  When the third embodiment is configured to be in the engagement state when the amount of protrusion of the shaft portion with respect to the main body portion is the smallest as in the second embodiment, the lower end of the small diameter portion is thinner, and gradually becomes smaller toward the upper end. It becomes a structure that becomes thicker. The distance from the small diameter portion to the protruding end of the sphere S in the engaged state is the same as in the case of the second recess 222. The distance from the small diameter portion to the protruding end of the sphere S in the released state is the same as that in the case of the first recess 224.

(Action / Effect)
The tool holder according to the third embodiment described above also holds or removes a tool that can be attached to a driving rotary tool having an insertion angle at the tip simply by relatively displacing the shaft and the main body. Or you can. Therefore, the operator can hold a plurality of such tools regardless of the work place, and can remove and hold the tools by a simple operation. As a result, work efficiency can be improved.

  According to the tool holder of the first to third embodiments and the modifications thereof, according to the tool holder of the embodiment, the drive having the insertion angle at the distal end only by relatively displacing the shaft portion and the main body portion. A tool that can be attached to the rotating tool can be held or removed. Therefore, the operator can hold a plurality of such tools regardless of the work place, and can remove and hold the tools by a simple operation. As a result, work efficiency can be improved.

  In addition, since the tool holder is attached to a belt, a belt passer, a carabiner, or the like, a tool can be specified at a glance even when a plurality of tool holders are used. Alternatively, even if multiple tool holders are used and the tool holders are attached to the back of the operator, the tool holders are independent, so multiple tools do not interfere with each other even when groping, and the specification of the tools is conventional. It is easier. Further, even when the operator carries the cutting tool with the tool holder, it is easy to specify the cutting tool, so that it is possible to avoid problems such as injury to the hand.

  In the tool holder, the tool is not removed unless a pressing operation (or a pulling operation, a rotating operation) for releasing the engagement is performed. Therefore, even when working at a high place, the operator is prevented from dropping the tool. It is possible. As described above, the tool holder is intended to improve the work efficiency of the worker.

  Although the embodiments of the present invention have been described, the above embodiments have been presented by way of example and are not intended to limit the scope of the invention. These new embodiments can be implemented in other various forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and their equivalents.

100, 200 Tool holder 110, 210 Body part 112 Engagement part 114 Third opening 116a, 216a First opening 116b, 216b Second opening 118 Finger hook 118a Edge 118b Tapered surface 120, 220 Shaft 121, 221 Through hole 122, 222 Second concave part 123, 223 Wall part 124, 224 First concave part 125 Third concave part E, E 'Elastic member H Hollow part R Hanging part S Sphere st1 First step part st2 Second Step

Claims (4)

A tool holder for holding a tool that can be attached to a driving rotary tool having an insertion angle at a tip,
A shaft,
An operation unit on one end side of the shaft unit ;
A body having an opening at at least one end, allowing the shaft to advance and retreat in the axial direction to the other end, and having a hollow portion for accommodating the shaft .
A predetermined range on the other end side of the main body is formed in a shape corresponding to the insertion angle,
In the predetermined range, when the operating portion is pushed to the other end and the shaft is pushed to the other end, the engagement of the tool is released, and the shaft moves to the one end. , An engagement means for engaging with the tool is provided,
A tool holder further provided on the operation unit, the finger holder being able to catch a user's finger when the shaft is pressed. A hanging portion provided on the one end side of the operation portion or the main body portion
The tool holder according to claim 1, wherein: In the hollow portion of the main body portion, an urging means for urging the shaft portion in a direction to project from the opening is provided,
By pushing the shaft portion toward the other end of the main body portion against the urging force of the urging device, the engaging means at least partially exposed from the main body portion is inserted into the hollow portion. precipitated, tool holder according to claim 1 or 2, characterized in that switched to the released state of the engagement. The tool holder according to any one of claims 1 to 3, wherein the finger hook has a tapered surface that becomes gradually wider.