Tool holder

Abstract

To provide a tool holder that enables good-looking construction without the tip of the tool bouncing off the construction surface.SOLUTION: There is provided a tool holder including: a holding portion α disposed at the tip side for holding a tool T; a connecting portion γ fixed to the tip of a rod-shaped member 8 that increases the dimension from the hand; and a flexible portion β interposed between the holding portion α and the connecting portion γ, which bends when pressure is applied in the connecting direction of the holding portion α and the connecting portion γ and when the connecting direction is changed when the tool is operated, and which returns the positional relation between the holding portion α and the connecting portion γ to the positional relation before bending when pressure in the connecting direction is released. Functions of the tool T include writing, painting, sweeping, or scrubbing.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a tool holder that holds a tool for performing processes such as marking, marking, coating, painting, or cleaning at a location remote from the hand, such as at a high place.

Background Art

[0002] At a construction site, in addition to the work of marking various numbers and characters on the surface of a building structure and the work of applying paint to the surface of the building structure, operations such as marking, coating, or cleaning are also carried out. Such work is often carried out after securing a scaffold or a foothold. However, even after securing a scaffold or a foothold, for locations remote from the hand, tools such as chalk, a brush, a roller, or a trowel are attached to the tip of a long rod-shaped member, and a predetermined operation is performed (for example, see Patent Document 1 or Patent Document 2 below).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, the conventional marker holders and chalk holders (hereinafter referred to as "holders") are directly fixed along the longitudinal axis (longitudinal direction) of the rod-shaped member at the tip of the rod-shaped member which has its own shape retention property and is highly rigid. Therefore, the straight line from the hand to the marker or chalk (hereinafter referred to as "chalk etc.") is always maintained. For this reason, there is a problem that it is impossible to continuously bring the chalk etc. into contact with the body surface as if directly holding the chalk etc. with a flexible hand. That is, the farther the chalk etc. is from the hand, the more difficult it becomes to adjust the object angle and the writing pressure. In particular, when the chalk etc. and the rod-shaped member are perpendicular to the construction surface, the tip of the chalk etc. bounces off the body surface (hereinafter referred to as "flutter"), and such gaps occur that make it difficult to read the marked characters, numbers, symbols, etc. (hereinafter referred to as "symbols etc."). On the other hand, if one tries to draw directly by stretching the hand without using a rod, it will impose an unreasonable burden on the work and also impair the work safety. As described above, a lot of experience and skill proficiency are required to freely use the conventional holders, but the problem is that the workability does not improve in a state where only veterans can use them. Such a situation is not preferable in order to overcome the labor shortage accompanying the aging of the population and the declining birthrate.

[0005] The present invention has been made in view of the above circumstances, and an object thereof is to provide a tool holder that can perform a good-looking construction without the tip of the tool bouncing off the construction surface.

Means for Solving the Problems

[0006] The tool holder according to the present invention made to solve the above problems includes a holding portion disposed at the tip side for holding a tool, a connecting portion fixed to the tip portion of a rod-shaped member that gains dimensions from the hand, and an intermediate portion between the holding portion and the connecting portion, which bends by applying pressure in the connecting direction of the holding portion and the connecting portion and changing the connecting direction when the tool functions, and has a flexible portion that restores the positional relationship between the holding portion and the connecting portion to the positional relationship before bending by releasing the pressure applied in the connecting direction. The flexible portion has flexibility (shape retention, deformability, elasticity, or resilience) sufficient to function the tool. The flexible portion can adopt a configuration that can expand and contract, or a configuration in which the bending of the flexible portion is restricted to palmar flexion, dorsal flexion, flexion (adduction), or ulnar flexion (abduction). In addition, the pressure is applied by a pressure suitable for the function and specifications of the tool.

[0007] The functions of the tool can include writing (such as with chalk or a marker), painting (such as with a brush, roller, or spatula), sweeping (such as with a broom or whisk), or wiping (such as with a brush or dishcloth). For example, since painting or sweeping often requires less pressure in the operation than writing or wiping, it is possible to select to set the shape retention strength (difficulty of deformation) of the flexible portion to be higher for the latter than for the former. If a configuration in which the holding portion, the flexible portion, and the connecting portion are detachably connected is adopted, it is possible to replace the flexible portion appropriately according to the tool fixed to the holding portion. In addition, the flexible portion and the connecting portion can be integrated by integral molding or the like.

[0008] In addition, in preparation for the case where the construction site and the hand are close, the holding portion includes a grip portion that can be held by a human hand at a part thereof, and the connecting portion can be detachable from the tip portion of the rod-shaped member. It is desirable that the holding portion is set to approximately the length from the human wrist to the fingertip, and the flexible portion is connected to the end of the holding portion.

Advantages of the Invention

[0009] According to the tool holder of the present invention, due to the presence of the flexible portion, it becomes easy to keep the chalk or the like in contact with the body surface as when directly holding the chalk or the like with a flexible hand, and even if the chalk or the like is far away from the hand, within a distance of about 2 m, the object angle and the pen pressure can be adjusted. Thus, even when the chalk or the like and the rod-shaped member are perpendicular to the construction surface, there is no trembling at the tip of the chalk or the like, and depending on the tool attached to the holding portion, the working range is not limitedly restricted, and markings such as easy-to-read symbols, good-looking painting, thorough cleaning and beautification, etc. can be carried out to perform good-looking construction.

[0010] By adopting a configuration in which the bending of the flexible portion is restricted to palmar flexion, dorsal flexion, flexion (adduction) and ulnar flexion (abduction), it becomes easier to handle the tool as desired at the tip of the rod-shaped member. By providing a grip portion that can be grasped by a human hand on a part of the holding portion and making the connecting portion detachable from the tip of the rod-shaped member, it is possible to achieve a configuration that is easy to construct quickly when simultaneously constructing a separated location and a proximity location.

[0011] By adopting a configuration in which the holding portion is set to a length approximately from the wrist to the fingertips of a human hand and the flexible portion is connected to the end of the holding portion, the bending position of the flexible portion is close to the case of handling the tool by hand. Therefore, when performing construction at a separated location, it can be handled while imagining the tool handling in the case of manual construction.

Brief Description of the Drawings

[0012]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0013] Hereinafter, embodiments of the tool holder according to the present invention will be described in detail with reference to the drawings. The present invention includes a holding portion α disposed at the tip end side for holding a tool T, a connecting portion γ fixed to the tip end portion of a rod-shaped member 8 for gaining dimensions from the hand, and a flexible portion β interposed between the holding portion α and the connecting portion γ, which bends by applying pressure in the connecting direction of the holding portion α and the connecting portion γ and by changing the connecting direction, and returns the positional relationship between the holding portion α and the connecting portion γ to the positional relationship before bending by releasing the pressure applied in the connecting direction. Here, the connection direction between the holding part α and the connecting part γ is the direction in which the two approach each other. If the connecting part γ is taken as the starting point, it is the direction in which the connecting part γ approaches the holding part α. Further, the change in the connection direction is a change in the positional relationship between the connecting part γ and the holding part α caused by moving the connecting part γ via the rod-shaped member 8 under pressure in the connection direction.

[0014] FIG. 1 is a perspective view showing an example thereof. In this example, a holding part α arranged at the tip and holding the tool T, a connecting part γ fixed to the tip of a rod-shaped member 8 that gains dimension from the hand, and an intermediate part β that is interposed between the holding part α and the connecting part γ and bends due to pressurization in the longitudinal direction (connection direction) connecting the longitudinal axes of the holding part α and the connecting part γ and a change in the connection direction caused by lateral movement or turning of the connecting part γ when the tool T functions, and returns the holding part α onto the extension line of the longitudinal axis of the connecting part γ by releasing the pressurization in the longitudinal direction (connection direction) (see FIG. 2). This example is composed of a tip member 1, an intermediate member 2, a terminal member 3, a flexible member 4, and a rod-shaped member 8. The holding part α is composed of the tip member 1 and the intermediate member 2, the connecting part γ is composed of the terminal member 3, and the flexible part β is composed of the flexible member 4 and the terminal member 3. The holding part α is set to a length approximately from the wrist to the fingertip of a human, and the flexible part β is connected to the end of the holding part α.

Example

[0015] The tip member 1 is a member arranged at the tip of a tool holder and holding the side surface or the end of the tool T, and its total length is set to be shorter than the length approximately from the wrist to the fingertip of a human. The tip member 1 of this example is a bottomed cylindrical member that holds the side surface of a chalk (tool) T, has a flange 1a at the tip, then has a grip part 1b, and has a male thread 1c that is screwed with the intermediate member 2 on the surface of the end part. The flange 1a is provided such that screw holes 1d penetrating the inside and outside of the side plate are uniformly arranged over the entire circumference at positions equidistant from the tip as holding means for fixing the choke T in the inner space. A fixing screw 5 that supports the choke T housed in the inner space at the tip is screwed into the screw hole 1d.

[0016] The intermediate member 2 is a member that is disposed in the middle part of the tool holder and holds the end part of the tip member 1 and the tip part of the flexible member 4. The intermediate member 2 forms a holding part α together with the tip member 1, and its overall length is set to be approximately the length from the wrist to the fingertips of a human hand in combination with the overall length of the tip member 1. This intermediate member 2 is a cylindrical member provided with a female screw 2a that engages with the male screw 1c at the end of the tip member 1 on the inner wall of the tip part, and a partition plate 2e that partitions the inner space in the middle part into a tip-side tip member holding space 2c and a terminal-side flexible member holding space 2d, and is provided such that screw holes 2b penetrating the inside and outside of the side plate are uniformly arranged over the entire circumference at positions equidistant from the end. These screw holes 2b face a fixing part (not shown) provided at the tip of the flexible member 4, and by screwing a fixing screw 6 into the screw holes 2b, it functions to hold and fix the tip of the flexible member 4. With such a configuration, this tool holder can be bent at a position approximately the length from the wrist to the fingertips of a human hand from the tip member 1. In addition, a configuration in which the partition plate 2e is omitted from the intermediate member 2, a configuration in which the end of the tip member 1 is used as a wall that seals the flexible member 4 instead of the partition plate 2e, or a configuration in which the tip member 1 has a cylindrical shape without a bottom plate and the partition plate 2e of the intermediate member 2 is used as a bottom plate that supports the tool T can also be adopted.

[0017] The end member 3 is a member fixed to the tip of the rod-shaped member 8 in order to obtain the dimension from the hand to the tip of the tool T. This end member 3 is a bottomed cylindrical member, provided with a flexible member holding space 3a on the tip side, and a blocking plate 3d that closes the flexible member holding space 3a at the end, and is provided with a screw hole 3b that faces a fixing part provided at the end of the flexible member 4 when connecting to the flexible member 4. The fixing screw 7 screwed into the screw hole 3b functions to hold and fix the end of the flexible member 4. This end member 3 is provided with a connection hole 3c that is screwed onto the end of the rod-shaped member 8.

[0018] The flexible member 4 is a spring formed by spirally shaping an elastic metal (see, for example, FIGS. 1 to 4), a rod spring formed by shaping an elastic material into a column (see, for example, FIG. 5 or FIG. 6), etc., and at its tip and end portions, there are provided fixing portions for supporting or holding the tips of the fixing screws 6 and 7 of the intermediate member 2 and the end member 3. The flexible portion β provided with such a flexible member 4 makes it easier to draw characters such as "8" and "9" including arcs and circles, which were difficult to draw in one stroke by conventional means. In addition, for example, when drawing a line including a folded-back portion where a pen pointing downward is continuously inverted upward, such as a downward convex curve, the burden on the arm and body can be reduced. Furthermore, if a flexible member 4 having both flexibility and stretchability like a spring is adopted (see FIGS. 3 and 4), the flexible member 4 can reproduce the rotation of the wrist, fixation with the fingertips, and stretching, and perform the work while absorbing the load when moving the tool T along the construction surface. In addition, the flexible portion β or the flexible member 4 can be integrally shaped from a material such as rubber or synthetic resin that has an appropriate flexibility (shape retention, deformability, elasticity, or resilience) sufficient to function the tool T according to the use of the tool T, and also has an appropriate flexibility for connecting to the tip of the rod-shaped member 8.

[0019] The rod-shaped member 8 is a rod-shaped wood, synthetic resin material, etc. having rigidity with suppressed deflection at maximum elongation, and a connection screw 8a that is screwed into the connection hole 3c of the end member 3 is fixed as a connection means at its tip. When the rod-shaped member 8 is configured to be stretchable (see FIGS. 1(B), 7, and 12), a plurality of pipe materials with approximate diameter dimensions can be slidably loaded into each inner cavity in order from the thickest, and for each of the adjacent pipe materials, a known anti-disengagement means and a position fixing means 8c can be attached.

[0020] The integrally formed tool holder configured as described above fixes the chalk T in the inner cavity of the tip member 1, tightens the fixing screw 5 of the tip member 1 to make the chalk T immovable, and is used by screwing it onto the tip of the rod-shaped member 8.

[0021] For example, when performing an operation of marking a predetermined symbol or the like on the surface of the housing 9, the length of the rod-shaped member 8 is adjusted to match the distance to the construction site using the position fixing means 8c, the tip of the chalk T is placed at the target location, and the target symbol or the like is drawn. According to this tool holder, even if the tip of the chalk T is far from the hand, due to the presence of the flexible portion β (flexible member 4), the tip of the chalk T moves smoothly along the construction surface as if directly holding the chalk T by hand, and the chalk T is always guided to incline with respect to the construction surface. As a result, there is no trembling at the tip of the chalk T or the like, and symbols or the like that look good and are easy to read can be marked on the construction surface. Moreover, since the length from the tip of the chalk T to the flexible portion β of this tool holder is set to be approximately the length from the wrist to the fingertip of a human, the bending position is close to the case of handling the tool T by hand, and the chalk T fixed to the holding portion α can be handled while imagining the tool handling in the case of manual construction.

[0022] In addition to the configuration of holding the chalk T for the purpose of marking a symbol or the like on the construction surface as described above, the tip member 1 can adopt a configuration of holding a brush, a roller, etc. as a painting means for applying a finishing agent to the construction surface, or a configuration of holding a broom, a brush, etc. as a cleaning or polishing means for cleaning or polishing the construction surface. At that time, the tip member 1 sets the shape of the inner cavity and the fixing means according to the form of the handle of each tool T. The tool T attached to this tool holder can be handled while imagining the tool handling in the case of manual construction during the operation, so that only the functional part of each tool T (a part of the chalk, a brush part, a spatula part, etc.) is exposed from the tip of the tip member 1. Therefore, it is desirable that the length of the handle of each tool T is set within approximately the length from the wrist to the fingertip of a human, similar to the total length of the tip member 1.

[0023] The holding means of the holding part α is provided such that screw holes 1d penetrating the inside and outside of the side plate are uniformly arranged over the entire circumference at positions equidistant from the tip thereof. In addition to the configuration in which a fixing screw 5 that supports the handle stored in the inner cavity at the tip is screwed into the screw hole 1d, known means that can hold each handle without wobbling or detaching can be selected. In this example, since the holding part α, the flexible part β, and the connecting part γ can be easily divided, the holding part α, the flexible part β (flexible member 4), the connecting part γ, or the rod-shaped member 8 can be easily replaced according to the tool T to be used.

Embodiment

[0024] This second embodiment has substantially the same configuration as the previously described first embodiment, but the configuration of the flexible part β is different. That is, the bending of the flexible part β in the second embodiment is restricted in four lateral directions perpendicular to each other corresponding to palmar flexion, dorsal flexion, radial flexion (inward rotation), and ulnar flexion (outward rotation) of the human body (see, for example, FIGS. 9 and 10). Thereby, the movement of the wrist in four directions that a person is accustomed to in daily life is reproduced, and it becomes easier to handle the tool as desired at the tip of the tool holder. In this example, the flexible part β can adopt a configuration in which a spring formed by spirally shaping an elastic metal is used as the flexible member 4 and a guide rail 10 that restricts the tilting direction in four directions is provided (see FIG. 9), a spring having a spiral shape as a quadrangular prism and a bending direction controlled in four directions, a bar spring formed by shaping an elastic material into a quadrangular prism (see FIG. 10), or a configuration in which both are used as the flexible member 4 and the tilting direction is restricted in the side surface direction of the flexible member 4.

[0025] Here, palmar flexion is the movement of bending the wrist toward the palm side, dorsal flexion is the movement of bending the wrist toward the back side, radial flexion is the movement of bending the wrist toward the thumb side, and ulnar flexion is the movement of bending the wrist toward the little finger side.

Embodiment

[0026] This Example 3 has substantially the same configuration as Example 1 described above, but the tip member 1 is provided with a grip portion 1b that can be grasped by a human hand on a part thereof, and the end member 3 has a configuration that is detachable from the tip of the rod-shaped member 8. As the connecting means for connecting the tool holder and the rod-shaped member 8, in addition to the configuration in which the connecting screw 8a and the connecting hole 3c are screwed together, for example, known connecting means such as the configurations shown in FIGS. 1 and 2 of Patent Document 1 can be appropriately adopted. However, when it is assumed that construction is repeatedly performed at separated locations and close locations, it is desirable to adopt a configuration that can be attached and detached with one touch rather than a configuration that requires repeated rotation in order to quickly respond.

[0027] The tool holder according to the present invention is not limited to the above configuration, and within the scope where the functions and effects of the present invention are achieved, the configuration of each component can be appropriately changed. For example, a holding portion α arranged on the tip side for holding a tool, a connecting portion γ fixed to the tip of the rod-shaped member 8 that gains dimensions from the hand, and a flexible portion β interposed between the holding portion α and the connecting portion γ, which bends by applying pressure in the connecting direction of the holding portion α and the connecting portion γ and changing the connecting direction, and restores the positional relationship between the holding portion α and the connecting portion γ to the positional relationship before bending by releasing the pressure applied in the connecting direction. If it has a configuration, the holding portion α, the flexible portion (flexible member 4) β, or the connecting portion γ may adopt a configuration that bends or curves laterally into a U-shape, an L-shape (see FIG. 12), a T-shape, or the like. By adopting the above configuration, work can be performed from separated positions along the construction surfaces above, below, left, and right even at a site where it is not possible to face the construction surface or at an extremely narrow site where it is not possible to secure a work space while facing the construction surface. Even in such a case, the tool can be handled while imagining the handling of the tool when manually constructing, by utilizing the flexible portion β. Also, for example, the grip portion 1b of the tip member 1 and the rod-shaped member 8 preferably adopt a shape based on a cylinder suitable for markings such as symbols, and for brushes, brooms, and brushes, a shape based on a flat plate is adopted so that the orientation of the functional portion can be recognized. In particular, the grip portion 1b preferably has a shape that is easy to hold with one hand like a felt-tip pen.

Explanation of Symbols

[0028] α holding part, β flexible part, γ connecting part, 1 tip member, 1a flange, 1b grip part, 1c male thread, 1d screw hole, 2 intermediate member, 2a female thread, 2b screw hole, 2c tip member holding space, 2d flexible member holding space, 3 end member, 3a flexible member holding space, 3b screw hole, 3c connecting hole, 3d blocking plate, 4 flexible member, 5 fixing screw, 6 fixing screw, 7 fixing screw, 8 rod-shaped member, 8a connecting screw, 9 body, 10 guide rail,

Claims

1. A holding part disposed on the tip side for holding a tool, A connecting part fixed to the tip of a rod-shaped member that gains dimension from the hand, A flexible part interposed between the holding part and the connecting part, which bends by applying pressure in the connecting direction of the holding part and the connecting part and changing the connecting direction when the tool functions, and returns the positional relationship between the holding part and the connecting part to the positional relationship before bending by releasing the pressure in the connecting direction. A tool holder characterized by comprising.

2. A holding part disposed on the tip side for holding a tool, A connecting part fixed to the tip of a rod-shaped member that gains dimension from the hand, A flexible and expandable part interposed between the holding part and the connecting part, which bends by applying pressure in the connecting direction of the holding part and the connecting part and changing the connecting direction when the tool functions, and returns the positional relationship between the holding part and the connecting part to the positional relationship before bending by releasing the pressure in the connecting direction. A tool holder characterized by comprising.

3. A holding part disposed on the tip side for holding a tool, A connecting part fixed to the tip of a rod-shaped member that gains dimension from the hand, A flexible part interposed between the holding part and the connecting part, which bends by applying pressure in the connecting direction of the holding part and the connecting part and changing the connecting direction when the tool functions, and returns the positional relationship between the holding part and the connecting part to the positional relationship before bending by releasing the pressure in the connecting direction, and the bending is regulated by palmar flexion, dorsal flexion, flexion or ulnar flexion. A tool holder characterized by comprising.

4. The tool holder according to any one of claims 1 to 3, characterized in that the flexible part and the connecting part are integral.

5. The tool holder according to any one of claims 1 to 3, characterized in that the function of the tool includes writing, painting, sweeping, rubbing or scraping out.

6. The holding part includes a grip part that can be grasped by a human hand on a part thereof. The tool holder according to any one of claims 1 to 3, wherein the connecting part is detachable from the tip of the rod-shaped member.

7. The tool holder according to any one of claims 1 to 3, wherein the holding part is set to a length approximately from the wrist to the fingertips of a human hand, and the flexible part is connected to the end of the holding part.

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