Hand tools and their manufacturing method

Abstract

To provide a manual tool which can be applied to fasteners of various standards and sizes, has a simple structure, and is easily manufactured, and to provide a method for manufacturing the same.SOLUTION: The present invention relates to a method for manufacturing a manual tool comprising the steps of: setting a target sleeve port size on the basis of a first standard range and a second standard range; and forming a manual tool body on the basis of the target sleeve port size. One of the first standard range and the second standard range is a meter size range, and the other is an inch size range. The manual tool body is provided with a sleeve port and a plurality of sides surrounding the sleeve port, and a distance between two sides opposite to each other in a radial direction corresponds to the target sleeve port size. The present invention further provides the manual tool manufactured by the manufacturing method, where the sleeve port is provided at one end of the manual tool body, and the manual tool is a wrench or a sleeve used for fitting a fastener.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to hand tools, and more particularly to hand tools and methods of manufacturing same. [Background technology]

[0002] Common hand tools such as open end wrenches, box wrenches, ring wrenches, ratcheting wrenches, sleeves, etc. are sized to fit metric or imperial sizes to fit the fasteners they are intended to turn and have at least one sleeve port for installing the fastener. Conventional fasteners come in a variety of sizes, including two standards, metric and inch sizes, but existing hand tools can only provide two sizes of sleeve mouths (double-ended), so workers must prepare multiple hand tools of different standards or sizes for their work, resulting in inconvenience in carrying them and high purchasing costs.

[0003] To solve the above problems, there are hand tools on the market that have a single sleeve opening suitable for two different sizes of fasteners, but the side walls surrounding the sleeve opening need to be machined with additional arc convex surfaces, locking grooves, abutment walls, etc., resulting in a complex structure and high machining costs, and the small contact area makes it easy for problems such as deformation and falling off of the fastener to occur.

[0004] Therefore, there is a need to provide a new and innovative hand tool and method for manufacturing the same in order to solve the above problems. Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE PRESENT EMBODIMENTS A primary object of the present invention is to provide a hand tool that is applicable to fasteners of various standards and sizes, has a simple structure, and is easy to manufacture, and a method for manufacturing the same. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides a method for manufacturing a manual tool, comprising the steps of: setting a target sleeve opening size based on a first standard range and a second standard range, one of the first standard range and the second standard range being a metric size range and the other being an inch size range, the first standard range including a first upper limit value and a first lower limit value, the second standard range including a second upper limit value and a second lower limit value, and if the first lower limit value is between the second lower limit value and the second upper limit value, the target sleeve opening size is set to be equal to or greater than the first lower limit value and equal to or less than at least one of the first upper limit value and the second upper limit value, and if the first lower limit value is greater than the second lower limit value and the second upper limit value, the target sleeve opening size is set to be equal to or greater than the first lower limit value and equal to or less than the first upper limit value; and forming a manual tool body based on the target sleeve opening size, the manual tool body is provided with one sleeve opening and a plurality of side edges surrounding the sleeve opening, and a distance between two radially opposing side edges corresponds to the target sleeve opening size.

[0007] In order to achieve the above object, the present invention also provides a hand tool manufactured by the above-mentioned method for manufacturing a hand tool, the hand tool being a wrench or a sleeve, the sleeve opening being provided at one end of the hand tool body and being provided for fitting a fastener. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view of a first preferred embodiment of the present invention; [Diagram 2] FIG. 1 is a side view of a first preferred embodiment of the present invention. [Diagram 3] FIG. 2 is a perspective view of a second preferred embodiment of the present invention; [Figure 4] FIG. 13 is a perspective view of a third preferred embodiment of the present invention; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, possible embodiments of the present invention will be described with reference to examples, but these are not intended to limit the scope of the invention.

[0010] 1 to 2, a first preferred embodiment of the present invention is shown. A manufacturing method of a hand tool of the present invention includes a step of setting a target sleeve opening size based on a first standard range and a second standard range, and a step of molding a hand tool body 10 based on the target sleeve opening size.

[0011] One of the first standard range and the second standard range is a metric size range, and the other is an inch size range. The first standard range includes a first upper limit value and a first lower limit value, and the second standard range includes a second upper limit value and a second lower limit value. When the first lower limit value is between the second lower limit value and the second upper limit value, the target sleeve opening size is set to be equal to or larger than the first lower limit value and equal to or smaller than at least one of the first upper limit value and the second upper limit value, and when the first lower limit value is larger than the second lower limit value and the second upper limit value, the target sleeve opening size is equal to or larger than the first lower limit value and equal to or smaller than the first upper limit value. The manual tool body 10 is provided with one sleeve opening 11 and a plurality of side edges 12 surrounding the sleeve opening 11, and the distance between the two radially opposing side edges 12 corresponds to the target sleeve opening size. This allows the sleeve opening 11 to be applied to both metric and inch scale fasteners, making it easy to process, versatile, and stable to handle.

[0012] In this embodiment, the first standard range is the inch size range, and the second standard range is the metric size range. Taking an example of a size of 11 / 16" inches in the inch system and 17mm in the metric system, the inch size range that meets the criteria is 17.51mm (the first lower limit) to 17.76mm (the first upper limit), the metric size range that meets the criteria is 17.05mm (the second lower limit) to 17.30mm (the second upper limit), and the target sleeve opening size may be set between 17.51mm to 17.76mm (e.g., 17.67mm). In this way, the sleeve opening 11 of the hand tool can be applied to a 11 / 16" inch fastener since it meets the inch size range, and can also be applied to a 17mm fastener in the range close to the metric size, and can be easily manufactured without the need for separate processing.

[0013] Preferably, when the target sleeve opening size corresponds to the first standard range but does not correspond to the second standard range, the difference between the target sleeve opening size and the second lower limit value is not more than 0.8 mm, and when the first lower limit value is greater than the second lower limit value and the second upper limit value, the difference between the first lower limit value and the second upper limit value is not more than 0.4 mm, thereby avoiding an excessively large size difference and ensuring that the fastener abuts and moves stably within the corresponding size range. In addition, in the manufacturing method of the hand tool, the distance between the two corresponding sides in the radial direction of the sleeve mouth is set to satisfy the target sleeve mouth size, and the target sleeve mouth size is selected in the above manner, and during operation, the same two sides can abut against fasteners of different sizes, and there is no need to process the multiple sides separately or to give them a special shape. Therefore, stable contact is ensured, and the fastener is less likely to come off or wear out, resulting in excellent usage effects.

[0014] In the manufacturing method of the manual tool, as shown in Fig. 1, a first size mark 20 corresponding to the metric size range and a second size mark 30 corresponding to the inch size range are provided on the manual tool body 10. The first size mark 20 and the second size mark 30 each include at least one of letters, numbers, and patterns, so that a user can easily select and use them. Preferably, in the manufacturing method of the manual tool, at least one identification structure 40 is provided on the manual tool body 10, and when the target sleeve opening size corresponds to the metric size range, the identification structure 40 is provided on the first size mark 20, and when the target sleeve opening size corresponds to the inch size range, the identification structure 40 is provided on the second size mark 30, so that a user can conveniently identify the standard size to which the sleeve opening 11 corresponds. In this embodiment, the at least one identification structure 40 includes a first identification portion 41 corresponding to the first size mark 20 and a second identification portion 42 corresponding to the second size mark 30, and the first identification portion 41 and the second identification portion 42 may be, for example, a circular, elliptical or polygonal pattern. When the target sleeve opening size corresponds to one of the metric size range and the inch size range and does not correspond to the other of the metric size range and the inch size range, the first identification portion 41 is different from the second identification portion 42. For example, the hexagonal frame and the circular frame shown in FIG. 1, the first identification portion 41 and the second identification portion 42 have different shapes. This allows the user to easily understand that the size of the sleeve opening 11 meets the inch size range of 11 / 16″ inches and can also be applied to the metric size range of 17 mm. In other embodiments, the at least one identification structure may include a pattern, a relief structure, a color block, colored text, etc. For example, the first and second identification parts may be patterned red if they meet the standard range and patterned green if they do not. The first and second identification parts may be framed in a circular manner if they meet the standard range and frameless if they do not meet the standard range, either of which is useful for identification.

[0015] In the method for manufacturing the hand tool, a plurality of notches 13 may be provided in communication with the sleeve opening 11, each of which is located between two adjacent sides 12 to facilitate fitting of the fastener and prevent wear at the corners of the fastener. Preferably, each side 12 is a continuously extending flat cut surface, and the width of each side 12 defining the interval is equal to or greater than the width of the other side 12. This allows the fastener to be stably abutted.

[0016] Also, FIG. 3 shows a second preferred embodiment. When the first lower limit is between the second upper limit and the second lower limit, the target sleeve opening size is between the first lower limit and the second upper limit. In this embodiment, the first standard range is the metric size range, and the second standard range is the inch size range. Taking a size of 5 / 8" inch in the inch system and 16mm in the metric system as an example, the inch size range that meets the criteria is 15.91mm (the second lower limit) to 16.16mm (the second upper limit), the metric size range that meets the criteria is 16.05mm (the first lower limit) to 16.27mm (the first upper limit), and the target sleeve opening size may be set between 16.05mm to 16.16mm (for example, 16.15mm). As a result, the sleeve opening 11a meets both the inch size range and the metric size range, can be applied to various sizes, and is easy to use. When the target sleeve opening size corresponds to the metric size range and the inch size range, the first identification portion 41 and the second identification portion 42 have different shapes. This indicates that the sleeve opening 11a meets two standard sizes and can be simultaneously applied to the corresponding fasteners. Note that the manual tool body 10a may have a plurality of sleeve openings 11a, 11b, and the shapes, standards, and sizes of the plurality of sleeve openings 11a, 11b may be the same or different as necessary.

[0017] The present invention further provides a hand tool manufactured by the above-mentioned method for manufacturing a hand tool. The hand tool may be a wrench (for example, the first and second embodiments shown in Figs. 1 to 3) or a sleeve (the third embodiment shown in Fig. 4). The sleeve opening 11, 11a, 11b, 11c is provided at one end of the hand tool body 10, 10a, 10b, and is used for fitting a fastener. The radial size of the sleeve opening 11a is preferably between the lower limit of one of the metric size range and the inch size range and the upper limit of the other, thereby satisfying both the metric size range and the inch size range and being suitably applicable to fasteners of various standards and sizes. [Explanation of symbols]

[0018] 10, 10a, 10b manual tool body 11, 11a, 11b, 11c sleeve opening 12 Sides 13 Notches 20 First Size Mark 30 Second Size Mark 40 Identification Structure 41 First Identification Section 42 Second Identification Section

Claims

1. A method for manufacturing a hand tool, which is a wrench or a sleeve, comprising the steps of: setting a target sleeve opening size based on a first standard range and a second standard range, one of the first standard range and the second standard range being a metric size range and the other being an inch size range, the first standard range including a first upper limit value and a first lower limit value, the second standard range including a second upper limit value and a second lower limit value, when the first lower limit value is between the second lower limit value and the second upper limit value, the target sleeve opening size is between the first lower limit value and the second upper limit value, when the first lower limit value is greater than the second lower limit value and the second upper limit value, the target sleeve opening size is greater than or equal to the first lower limit value and less than or equal to the first upper limit value, and a difference between the first lower limit value and the second upper limit value is 0.4 mm or less; A step of forming a manual tool body based on the target sleeve opening size, the manual tool body being provided with one sleeve opening and a plurality of side edges surrounding the sleeve opening, and a distance between two radially opposing side edges corresponds to the target sleeve opening size. A method for manufacturing hand tools.

2. 2. The method for manufacturing a hand tool according to claim 1, wherein when the target sleeve opening size corresponds to the first standard range but does not correspond to the second standard range, a difference between the target sleeve opening size and the second lower limit value is 0.8 mm or less.

3. a first size mark corresponding to the metric size range and a second size mark corresponding to the inch size range are further provided on the hand tool body; The method of claim 1 , wherein the first size markings and the second size markings each include at least one of a letter, a number, and a pattern.

4. At least one identification structure is further provided on the hand tool body; 4. The method of claim 3, wherein the identification structure is provided on the first size mark when the target sleeve mouth size corresponds to the metric size range, and the identification structure is provided on the second size mark when the target sleeve mouth size corresponds to the inch size range.

5. The tool body further includes a first identification portion corresponding to the first size mark and a second identification portion corresponding to the second size mark, 4. The method for manufacturing a hand tool according to claim 3, wherein when the target sleeve opening size corresponds to one of the metric size range and the inch size range and does not correspond to the other of the metric size range and the inch size range, the first identification portion has a different color or shape from the second identification portion.

6. When the target sleeve opening size corresponds to the first standard range but does not correspond to the second standard range, the difference between the target sleeve opening size and the second lower limit is 0.8 mm or less; A plurality of notches communicating with the sleeve openings are further formed, each of the notches being located between two adjacent sides; 6. The method for manufacturing a hand tool according to claim 5, wherein when the target sleeve opening size corresponds to the metric size range and the inch size range, the shapes of the first identification portion and the second identification portion are the same, and when the target sleeve opening size corresponds to one of the metric size range and the inch size range and does not correspond to the other of the metric size range and the inch size range, the shapes of the first identification portion and the second identification portion are different, and the first identification portion and the second identification portion are each a circular, elliptical, or polygonal pattern.

7. A hand tool manufactured by the method for manufacturing a hand tool according to any one of claims 1 to 6, A wrench or sleeve, the sleeve opening being provided at one end of the hand tool body and adapted to receive a fastener; hand tools.

8. 8. The hand tool of claim 7, wherein the radial size of the sleeve mouth is between a lower limit of one of the metric size range and an upper limit of the other of the inch size range.

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