Tool structure

A tool structure including two grips and a tool head. By way of an opening of a first pivot section of the grip, the first pivot sections of the grips can be separated, permitting the grips to be folded to two sides of the tool head. This reduces the room occupied by the tool and facilitates storage and carriage of the tool. The first pivot sections of the grips are spaced from the second pivot sections of the tool head by a certain distance to form a double-lever structure and prolong the length of the force application arm so as to save strength.

BACKGROUND OF THE INVENTION
 The present invention relates to an improved tool structure, and more
 particularly to a tool structure having double-lever structure and can be
 folded to reduce occupied room.
 FIG. 10 shows an existent tool having two grips 8 and a tool head 81. The
 front ends of the two grips 8 are pivotally connected with the tool head
 81. The bottom ends of the grips 8 are pivotally connected with various
 kinds of tools with multiple usage such as a blade 82, a screwdriver, etc.
 which can be turned outward for use. The two grips 8 can be folded in
 reverse directions toward the end of the tool head 81 as shown in FIG. 11
 so as to shorten the total length of the tool and reduce storage room of
 the tool as well as facilitate carriage of the tool.
 However, in use of such tool, only the grip 8 provides a length of the
 force application arm so that the strength cannot be effectively saved to
 facilitate use of the tool.
 FIG. 12 shows another type of existent tool which has double-lever
 structure. The tool also has two grips 9 and a tool head 91. The front
 ends of the two grips 9 are pivotally connected with the tool head 91. In
 addition, the two grips 9 are further pivotally connected with a pivot
 section 92 spaced from the pivot section 911 of the tool head 91 by a
 certain distance. By means of the double-lever structure between the grips
 9 and the tool head 91, the strength for operation of the tool can be
 saved.
 However, in such tool, the end of the tool head 91 is disposed with a pivot
 section 911 and the ends of the grips 9 are disposed with another pivot
 section 92. Moreover, the pivot sections 911, 92 must be respectively
 spaced from the end section 921 by a certain distance so as to save
 strength. Therefore, the total length of the tool is considerably long and
 the tool will occupy quite large room. As a result, it is inconvenient to
 store or carry the tool.
 SUMMARY OF THE INVENTION
 It is therefore a primary object of the present invention to provide a tool
 structure having double-lever structure. By means of an opening of a first
 pivot section of the grip, the first pivot sections of the grips can be
 separated, permitting the grips to be folded to two sides of the tool
 head. This reduces the room occupied by the tool and facilitates storage
 and carriage of the tool. Also, the tool can be operated with strength
 saved.
 It is a further object of the present invention to provide the above tool
 structure in which the grips are equipped with multiple tools with various
 usage to meet the requirements in different fields.
 According to the above objects, the tool structure of the present invention
 includes a tool head and two grips. The tool head is composed of two
 clamping members respectively disposed with two second pivot sections
 which are pivotally connected with each other by a second pivot shaft. The
 lower ends of the clamping members are respectively formed with two fixing
 holes.
 Each of the grips is disposed with a first pivot section. The first pivot
 section of one grip is disposed with a first pivot shaft. The first pivot
 section of the other grip is disposed with a pivot hole. The grips are
 pivotally connected with each other via the first pivot sections. The
 first pivot sections of the grips are spaced from the second pivot section
 of the tool head by a certain distance. The grips are respectively formed
 with two fixing holes. A fixing pin is passed through the fixing holes of
 the tool head and the grips to fix the same. The pivot hole of the grip is
 formed with an opening, whereby the first pivot shaft of the other grip
 can be detached from the opening so as to separate the first pivot
 sections of the two grips from each other.
 The present invention can be best understood through the following
 description and accompanying drawings wherein:

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
 Please refer to FIGS. 1 to 4. According to a first embodiment, the tool
 structure of the present invention includes:
 a tool head 3 which is a pincers in this embodiment, the tool head 3 being
 composed of two clamping members 31, the clamping members 31 being
 respectively disposed with two second pivot sections 33 which are
 pivotally connected with each other by a second pivot shaft 32, the lower
 ends of the clamping members 31 being respectively formed with two fixing
 holes 34; and
 two elongated grips 2, the top end of each of the grips 2 being disposed
 with a first pivot section 21, the first pivot section 21 of one grip 2
 being disposed with a first pivot shaft 211, the first pivot section 21 of
 the other grip 2 being disposed with a pivot hole 212, the grips 2 being
 pivotally connected with each other via the first pivot sections 21, the
 lower ends of the first pivot sections 21 being respectively formed with
 two fixing holes 22, a fixing pin 4 being passed through the fixing holes
 34, 22 of the tool head 3 and grips 2 to fix the same, the fixing pin 4
 being directed in parallel to the first pivot shaft 211, the first pivot
 section 21 of the grip 2 being spaced from the second pivot section 33 of
 the tool head 3 by a certain distance, the bottom end of the grip 2 being
 pivotally connected with multiple tools 6 such as a blade 63, screwdriver
 64, etc.
 The first pivot shaft 211 has a longer section 213 and a shorter section
 214. The longer section 213 has a first length D1, while the shorter
 section 214 has a second length D2. The first length D1 is longer than the
 second length D2. The pivot hole 212 of the first pivot section 21 of the
 grip 2 is formed with an opening 27. The opening 27 has a width smaller
 than the diameter of the pivot hole 212 and the first length D1 of the
 first pivot shaft 211, while larger than the second length D2 of the first
 pivot shaft 211.
 As shown in FIG. 2, the first pivot section 21 of the grip 2 is spaced from
 the second pivot section 33 of the tool head 3 by a certain distance. The
 length from the pivot center of the first pivot section 21 of the grip 2
 to the force application section 25 of the grip 2 defines a first force
 application arm L1. The length from the pivot center of the first pivot
 section 21 of the grip 2 to the center of the fixing hole 22 defines a
 first force resistant arm S1. The length from the pivot center of the
 second pivot section 33 of the tool head 3 to the center of the fixing
 hole 34 defines a second force application arm L2. The length from the
 pivot center of the second pivot section 33 of the tool head 3 to the
 working section 35 of the tool head 3 defines a second force resistant arm
 S2. The lengths of the first and second force application arms L1, L2 are
 longer than the lengths of the first and second force resistant arms S1,
 S2. When applying a force to the grips 2, the length of the force
 application arm is the total of the lengths of the first and second force
 application arms L1, L2. Therefore, by means of the double-lever structure
 between the grips 2 and the tool head 3, the strength can be saved.
 When folding the tool, as shown in FIGS. 3 and 4, the opening 27 is formed
 on one side of the grip 2 opposite to the other grip 2 so that the two
 grips 2 can be pulled open by different angles to make the opening 27
 aligned with the shorter section 214 of the first pivot shaft 211. That
 is, the two grips 2 are such opened that the first pivot shaft 211 can be
 detached from the opening 27 and folded along two sides thereof to the end
 of the tool head 3. Therefore, the tool can be easily folded. Reversely,
 in use, the two grips 2 are bent downward and the first pivot shaft 211 is
 aimed at the opening 27 and fitted thereinto for use of the tool. The
 force of working will press the grips 2 inward so that the first pivot
 shaft 211 is prevented from detaching from the opening 27. Therefore, the
 working will not be affected. Accordingly, when using the tool, it is
 unnecessary to switch any button so that the use of the tool is
 facilitated. After folded, the room occupied by the tool is reduced so
 that it is easy to store and carry the tool.
 In addition, the bottom ends of the grips 2 are pivotally connected with
 tools 6 such as blade 63 and screwdriver head 64 which can be turned
 outward for use. The tools serve to provide multiple usage in various
 fields.
 Alternatively, the grips 2 can be equipped with a ratchet wrench, knife or
 other tools without limitation.
 As shown in FIGS. 5 and 6, according to a second embodiment of the present
 invention, the fixing pin 4 of the grips 2 similarly has a longer section
 41 and a shorter section 42. The fixing holes 34 of the clamping members 3
 of the tool head 3 are respectively formed with two openings 341. The
 width of the openings 341 is smaller than the diameter of the fixing hole
 34 and first length D1 of the longer section 41 of the fixing pin 4, while
 larger than the second length D2 of the shorter section 42 of the fixing
 pin 4. The grip 2 is pivotally disposed with a socket 61 which can be
 fitted with other socket or screwdriver connecting rod (not shown). The
 other grip 2 is disposed with a ratchet wrench 62 having a ratchet 621
 clamped by clamping boards of the grip 2. The ratchet 621 is disposed with
 a switch mechanism 622, whereby the ratchet 621 can be only one-way
 rotated. Therefore, in addition to installation of the above blade 63 and
 screwdriver head 24, by means of the openings 27, the grips of the tool of
 the present invention equipped with the socket 61 and ratchet wrench 62
 can be taken off for use. The socket 61 can be fitted with other sockets
 611, 612 or screwdriver connecting rod (not shown ) so that one single
 grip 2 can be held and used without holding the other grip 2 and the tool
 head 3.
 FIGS. 7 and 8 show a third embodiment of the present invention, in which
 the two grips 2 are symmetrically arranged. One of the grips 2 is disposed
 with a first pivot shaft 211, while the other grip 2 is formed with a
 pivot hole 212. The pivot hole 212 is formed with an opening 271. The
 width of the opening 271 is approximate to the diameter of the first pivot
 shaft 211. The direction of the fixing pin 4 of the grip 2 is
 perpendicular to the first pivot shaft 211.
 By means of the opening 271, the grip 2 can be folded to a front side of
 the tool head 3, while the other grip 2 can be folded to a rear side of
 the tool head 3 as shown in FIG. 8. Similarly, the room occupied by the
 tool is reduced to facilitate storage and carriage of the tool.
 FIG. 9 shows a fourth embodiment of the present invention, in which the
 fixing hole 22 and force application section 25 of the grip 2 are
 positioned on top and bottom sides of the first pivot sections 21 of the
 grips 2. This embodiment also provides multiple tools with various usage
 and saves strength.
 In conclusion, by means of the opening 27 of the first pivot section 21 of
 the grip 2, the first pivot sections 21 of the grips 2 can be separated,
 permitting the grips 2 to be folded to the tool head 3. This reduces the
 room occupied by the tool and facilitates storage and carriage of the
 tool. The grips 2 are equipped with multiple tools 6 with various usage to
 meet the requirements in different fields. In addition, the first pivot
 sections 21 of the grips 2 are spaced from the second pivot sections 33 of
 the tool head 3 by a certain distance to form a double-lever structure and
 prolong the length of the force application arm so as to save strength.
 The above embodiments are only used to illustrate the present invention,
 not intended to limit the scope thereof. Many modifications of the above
 embodiments can be made without departing from the spirit of the present
 invention.