TW201406500A - Hand tool suitable for both metric system and imperial system - Google Patents

Abstract

The present invention provides a hand tool suitable for both metric system and imperial system, which may be used to drive the screws of at least two specification dimensions. The hand tool comprises a main body, which is opened with a driving hole for fitting and engaging with the screw with metric or imperial specification. The main body is further concaved with an arc groove at the center of each sidewall of the driving hole. The arc grooves together define another driving hole, which may be fitted and engaged with the screw member of another metric or imperial specification. Thus, the hand tool according to the present invention may be suitable for the driving operation for screws of two different specification dimensions in metric and imperial systems.

Description

Can be used with both metric and imperial hand tools

The invention relates to a hand tool, in particular to a hand tool which can be applied to both metric and inch sizes.

Referring to FIG. 1 , a conventional wrench has a wrench 10 . The wrench 10 mainly includes an elongated body 11 . The body 11 defines a polygonal driving hole 12 at one end. The driving hole 12 is just available. A screw (not shown) is inserted into the latch, and when the user flips the body 11 by the hand, the screw can be driven to perform a screwing or screwing action.

Referring to FIG. 2, a conventional ratchet wrench 20 is integrally provided with a wrench body 21, and the shaft of the wrench body 21 is provided with a ratchet member 22 that can only rotate in one direction, and a screw sleeve is formed inside the ratchet member 22. The driving hole 23 is inserted therein, so that when the wrench body 21 rotates clockwise, the screw can be driven to rotate, and when the wrench body 21 rotates counterclockwise, the screw can be released to return to the original position, repeating the above action. The screw can be driven continuously.

Referring to FIG. 3, the conventional hand tool also has a sleeve 30. The sleeve 30 is internally recessed with a polygonal drive hole 31. One end of the sleeve 30 can be inserted into the wrench tool (not shown). The drive hole 31 at the other end of the barrel 30 can be inserted into the screw, whereby the screw can be driven through the sleeve 30 when the user operates the wrench tool.

Each of the above hand tools has a drive hole 12, 23, 31 for inserting the screw into the engagement, but they all face the same use problem, and currently have international points. For both metric and imperial specifications, since the internal dimensions of the above-mentioned drive holes 12, 23, 31 are fixed and cannot be changed, a hand tool can usually only be made in a single standard specification, and it is impossible to mix the metric and the English specifications. For field work, both metric and inch sizes of screws are quite common. Users must prepare multiple different hand tools at the same time. It is not only cumbersome and time consuming, but also because the screws are metric or imperial. It also causes an increase in the number of hand tools and an increase in the cost of acquisition.

Accordingly, it is an object of the present invention to provide a hand tool that can be used in both metric and imperial systems.

Accordingly, the present invention provides a hand tool that can be simultaneously applied to both metric and imperial systems. The hand tool can be used to drive at least two sizes of screws. The hand tool includes a body having a drive hole. The rotary hole can be inserted into a screw of a metric or inch size, and the body is concavely provided with an arc groove at the center of each side wall of the drive hole, and the arc grooves collectively define another drive The hole, the other drive hole can be inserted into another metric or inch size screw, so that the corner end of the other screw protrudes into the arc groove to form a snap, thereby being applicable to both metric and inch sizes. The driving operation of screws of different sizes and sizes.

The utility model has the beneficial effects that the body is provided with a driving hole for inserting and fitting a screw of a metric or inch size, and the body is provided with a plurality of curved grooves at the inner wall of the driving hole and defines another One drive hole can be inserted into the screw of another size, so that the present invention can be applied to the screw of different sizes and sizes in the metric and inch sizes.

The above and other technical contents, features and advantages of the present invention will be apparent from the following detailed description of the preferred embodiments.

Referring to Figure 4, the present invention can be applied to both metric and imperial hand tools. In a preferred embodiment, the hand tool can be used to drive at least two sizes of screws, which can be general wrenches, ratchet wrenches or It is a tool sleeve, etc., which mainly comprises a body 40, and then the structural shape and the use space type of the present invention are detailed later.

A driving hole 41 having a hexagonal shape is formed on the main body 40, and the driving hole 41 is just enough for the screw of the first size (H1) to be engaged, or the size and the first size (H1). A relatively close second size (H2) screw member 200 is inserted into the latch (as shown in FIG. 5), and the first size (H1) and the second size (H2) may be metric or imperial specifications. An arcuate groove 412 is defined in the center of each side wall surface 411 of the drive hole 41. The arcuate groove 412 defines a drive hole 42 having a hexagonal shape and another drive hole 42. The internal dimensions are for a third size (H3) screw 300 to be nested (as shown in Figure 6), and the third size (H3) can be metric or inch size, allowing the other screw 300 to have each corner. The end portions may extend into the arcuate grooves 412 to form a snap. Different from the general hand tool drive hole, the V-shaped end end is designed. The corner end of the other drive hole 42 of the present invention is formed by an arc groove 412 which is a concave arc groove. The groove structure, in the recessed space of the curved groove 412, has sufficient margin to allow the corner end portion of the other screw member 300 to easily enter, which is advantageous for allowing the other screw member 300 to be quickly fitted to the other In the drive hole 42, after the other screw member 300 is sleeved in the other drive hole 42, the inner wall of the curved groove 412 is pushed against the other screw member 300 in a point contact manner, as shown in FIG. Show.

The above is an overview of the shape of the metric and inch hand tool components of the present invention; and then the effect that the present invention is expected to achieve is as follows: the present invention can be applied to both metric and imperial hand tools mainly for improvement The main technical means of the present invention is to provide a driving hole 41 on the main body 40, and the driving hole 41 can be inserted into a screw of a metric or inch size screw 100 (200). In addition, the main body 40 defines a curved groove 412 on each side wall 411 of the driving hole 41. The arc grooves 412 collectively define the spatial shape of the other driving hole 42 and the other driving hole 42. The screw member 300 of another metric or inch size can be inserted into the card, so that the invention has the structure of a single hand tool, and can be applied to both the metric and the English two different specifications, thereby facilitating the use and saving the tool cost. Effect. It should be noted that the drive hole 41 and the other drive hole 42 provided in the body 40 of the present invention can be respectively made into different specifications and sizes, so that the present invention can produce the following several changes, one of which is the same. The metric specifications are different in size, the other is in the British standard but the size is different, and the other is made in metric and imperial specifications and the dimensions are different. Therefore, the combination of the various metric combinations of the present invention can be widely used.

However, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the simple equivalent changes and modifications made by the scope of the present invention and the description of the invention. ,all It is still within the scope of the invention patent.

40‧‧‧ body

41‧‧‧ drive hole

411‧‧‧ side wall

412‧‧‧Arc ditch

42‧‧‧Another drive hole

100‧‧‧ screw

200‧‧‧ screw

300‧‧‧ Another screw

Figure 1 is a plan view of a conventional wrench tool; Figure 2 is a perspective view of a conventional ratchet wrench; Figure 3 is a perspective view of a conventional sleeve; Figure 4 is a preferred embodiment of the present invention for both metric and inch hand tools. A plan view of an embodiment of the present invention includes a body having a drive hole, and an arcuate groove is recessed in the center of each side wall of the drive hole; FIG. 5 is a schematic view of the use of the preferred embodiment. The drive hole can be used for the insertion of a metric or inch size screw; FIG. 6 is a schematic view of the above preferred embodiment, illustrating that the arc groove defines another drive hole and the other drive The hole can be inserted into the engagement of the screw of another size; and FIG. 7 is an enlarged view of the above preferred embodiment, illustrating the case where the other screw is in contact with the curved groove.

40‧‧‧ body

41‧‧‧ drive hole

411‧‧‧ side wall

412‧‧‧Arc ditch

Claims (2)

A hand tool capable of simultaneously applying metric and imperial functions, the hand tool being capable of driving at least two sizes of screws, the hand tool comprising: a body having a drive hole, the drive hole being available for The metric or inch-size screw is inserted into the sleeve, and the body is recessed with a curved groove at the center of each side wall of the drive hole, and the arc grooves collectively define another drive hole, and the other drive The rotary hole can be inserted into another metric or inch size screw, so that the corner end of the other screw protrudes into the curved groove to form a snap fit, thereby being applicable to both metric and inch sizes of snails. The drive of the piece. According to the first aspect of the patent application, the metric and imperial hand tools can be used at the same time, wherein the inner wall of the curved groove is in point contact with the other screw.