Patent Publication Number: US-10759068-B2

Title: Scissors and pliers combination tool

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation of Application No. PCT/CN2014/072982, filed on Mar. 6, 2014, for which priority is claimed under 35 U.S.C. § 120; and this application claims priority of Application No. 201320105600.5 filed in China on Mar. 7, 2013 under 35 U.S.C. § 119, the entire contents of all of which are hereby incorporated by reference. 
    
    
     TECHNICAL FIELD 
     The present invention relates to the field of multifunctional foldable tools, and in particular, relates to a small-sized and compact scissors and pliers combination tool. 
     BACKGROUND 
     A small-sized combination tool is very welcomed by consumers with its small volume, easy carrying, and diversified functions. Specially, persons working in the wild field can obtain a multifunctional combination tool with no excessive loads thereon. 
     A traditional combination tool typically employs a parallel combination. Specifically, a large-sized tool head is independently folded in a housing having a U-shaped groove, multiple small-sized tool heads may be folded in the same housing which is subsequently parallelly spliced together the housing accommodating the large-sized tool head, thereby forming a multifunctional combination tool. However, with higher requirements being imposed on the function of the folding tool, it is generally required that at least two large-sized tool heads should be provided, which most commonly comprises scissors and pliers. In the prior art, generally scissors are independently folded in a housing, and pliers are independently folded in a housing, and then two housings are parallelly spliced. In this way, although the requirements on the functionality are met, the combination tool at least requires two parallelly spliced housings. In addition, both the scissors and the pliers are provided with two hinged parts which require a housing with a larger thickness to accommodate the structure thereof. As a result, the thickness of the combination tool is increased. Based on the above, it is obviously unsuitable to add other tools. Especially, for users whose palms are not sufficiently large, a thicker housing is very inconvenient to operate, which greatly restricts the extension of functionality of the combination tool. 
     SUMMARY 
     The technical problem to be solved in the present invention is to overcome defects in the prior art, and provides scissors and pliers combination tool which are easy to operate, and have thinner thickness in the whole. This tool is favorable to expand the function to a further extend. 
     Based on the above objective, the present invention is implemented by using the following technical solution. 
     The present invention discloses scissors and pliers combination tool comprising: 
     scissors having a front end and a rear end, and comprising a first scissors blade and a second scissors blade that are hinged through a first axle at a central portion; 
     pliers having a front end and a rear end, and comprising a first gripping jaw and a second gripping jaw that are hinged through a second axle at a central portion; 
     a primary housing having a first end portion and a second end portion, a first U-shaped groove being formed at the first end portion and a second U-shaped groove being formed at the second portion, wherein an opening direction of the first U-shaped groove is reverse to that of the second U-shaped groove, the rear end of the first scissors blade is hinged through a third axle to the first end portion, and the rear end of the first gripping jaw is hinged through a fourth axle to the second end portion; 
     a scissors handle, a front end of the scissors handle being hinged to the rear end of the second scissors blade through a fifth axle, and a third U-shaped groove being disposed on a side facing towards the scissors; 
     a pliers handle, a front end of the pliers handle being hinged to the rear end of the second gripping jaw through a sixth axle, and a fourth U-shaped groove being disposed on a side facing towards the gripping jaw; 
     wherein the scissors and pliers have a folded state and unfolded state on the primary housing, and a folding or unfolding direction of the scissors is reverse to that of the pliers; 
     from the unfolded state to the folded state, the scissors rotate around the third axle towards the primary housing and the scissors handle rotates around the fifth axle towards the primary housing, such that the scissors are folded in a space formed by the first U-shaped groove and the third U-shaped groove; pliers rotate around the fourth axle towards the primary housing and pliers handle rotates around the sixth axle towards the primary housing, such that the pliers are folded in a space formed by the second U-shaped groove and the fourth U-shaped groove; and 
     from the folded state to the unfolded state, the scissors handle rotates around the fifth axle far away from the primary housing and the scissors rotate around the third axle far away from the primary housing, such that the scissors handle and the primary housing form an operation handle of the scissors; or the pliers handle rotates around the sixth axle far away from the primary housing and the pliers rotate around the fourth axle far away from the primary housing, such that the pliers handle and the primary housing form an operation handle of the pliers. 
     According to the present invention, a set of scissors and pliers may be folded on a primary housing provided that the width of the primary housing is slightly increased. The thickness of the scissors is typically much smaller than that of the pliers, and therefore the entire thickness of the primary housing is mainly determined by the thickness of the pliers. The folded structure employs the appearance characteristics of the scissors and pliers. Both the scissors blades and the gripping jaws have an outer profile having a slant face, which may be staggered in the primary housing after the scissors and the pliers are folded relative to each other. Therefore, two large-sized tool heads may be folded in the same housing. However, the thickness of the housing would not be increased, which is convenient for carrying and operation. 
     A first cantilever shrapnel is formed on a side bottom plate of the first U-shaped groove facing towards the scissors, a third cantilever shrapnel is formed on a side bottom plate of the third U-shaped groove facing towards the scissors, and rear ends of the first scissors blade and the second scissors blade have arc-shaped faces, a first step and a third step that mate with the first cantilever shrapnel and the third cantilever shrapnel in the unfolded state being formed on inner sides of the rear ends, and a first protrusion and a third protrusion that mate with the first cantilever shrapnel and the third cantilever shrapnel in the folded state being formed on outer sides of the rear ends. A second cantilever shrapnel is formed on a side bottom plate of the second U-shaped groove facing towards the pliers, a fourth cantilever shrapnel is formed on a side bottom plate of the fourth U-shaped groove facing towards the pliers, and rear ends of the first gripping jaw and the second gripping jaw have arc-shaped faces, a second step and a fourth step that mate with the second cantilever shrapnel and the fourth cantilever shrapnel in the unfolded state being formed on inner sides of the rear ends, and a second protrusion and a fourth protrusion that mate with the second cantilever shrapnel and the fourth cantilever shrapnel in the folded state being formed on outer sides of the rear ends. The cantilever shrapnel is to abut against the step on an inner side of the scissors blade or the gripping jaw when the scissors or the pliers are unfolded and used, which facilitates operations of the scissors or the pliers. The cantilever shrapnel is also to abut against a protrusion on an outer side of the scissors blade or the gripping jaw when the scissors or the pliers are folded for accommodation, which prevents looseness of the scissors handle or the pliers handle. 
     After the primary housing accommodates the scissors and the pliers, generally no extra space can be used to accommodate other tools. Therefore, according to the present invention, the rear end of the scissors handle or the rear end of the pliers handle is provided with a rotating tool, or the rear end of the scissors handle and the rear end of the pliers handle are each provided with a rotating tool. Disposing the rotating tool at each of these two positions is advantageous in that when the pliers handle or the scissors handle is opened to be perpendicular to the primary housing, the primary housing may serve as a handle of the rotating tool, thereby achieving a leverage effect and facilitating operations of the rotating tool. The rotating tool comprises: a slotted screwdriver, a cross screwdriver, a drill, and a corkscrew, or a combination of any two of them. 
     According to the present invention, the rotating tool is mounted in the third U-shaped groove, or the fourth U-shaped groove, or in the third U-shaped groove and the fourth U-shaped groove, a tool head is protrusively formed at a front end of the rotating tool, and an end face mating with the scissors or the tool head in the folded state is formed at a rear end of the rotating tool. In this way, after the combination tool is folded, the rotating tool achieves a function of closing the front ends of the scissors and pliers. In this way, under collaboration of the scissors handle and the pliers handle, a side face opening of the primary housing may be closed, thereby protecting the inner structure of the combination tool. 
     For ease of operation, an annular groove is disposed between two opposite faces of the first scissors blade and the second scissors blade, an annular spring being mounted in the annular groove, the annular spring having a preset resilience to support the first scissors blade and the second scissors blade in an open state when the scissors are in an unfolded state. In this way, during use of the scissors, by pressing the scissors handle, the blades of the scissors are closed for cutting; by releasing the scissors handle, under action of the annular spring, the first scissors blade and the second scissors blade restore to an opening state, thereby facilitating a next cutting operation. 
     For an extension of functionality of the combination tool, if a large-sized tool is to be added, the scissors and pliers combination tool needs to further comprise a secondary housing disposed on a side face of the primary housing, wherein the secondary housing forms a fifth U-shaped groove, a blade being foldably mounted in the fifth U-shaped groove. Since the blade has a smaller thickness, adding the secondary housing would not significantly increase the overall thickness of the combination tool. In a preferred embodiment, an inner side face of the secondary housing is provided with a locking shrapnel, wherein the locking shrapnel abuts against a side face of the blade when the blade is folded into the fifth U-shaped groove, thereby preventing the blade from being sliding out when not being used. 
     After a secondary housing is added, to fully utilize the additional space, the combination tool according to the present invention further comprises a secondary handle disposed on a side of the pliers handle or the scissors handle facing towards the secondary housing, and having a thickness the same as that of the secondary housing, wherein the secondary handle abuts against a side back to an opening of the fifth U-shaped groove of the secondary housing after being folded, and the secondary handle forms a sixth U-shaped groove, an opening direction of the sixth U-shaped groove being reverse to an opening direction of the fifth U-shaped groove, and a secondary tool head, such as a saw or a file, being internally foldably mounted in the sixth U-shaped groove. In the folded state, the secondary handle just mates with the secondary housing, thereby fully utilizing the additional space created by increasing the thickness due to adding the secondary housing. 
     According to the present invention, the scissors and the pliers are reasonably folded in the primary housing, and without increasing the thickness of the primary housing, the same housing is capable of accommodating two large-sized tool heads. The primary housing may serve as an operation handle of the combination tool. The handle having a small thickness is convenient for operations, especially for users whose palms are not sufficiently large. In addition, since the thickness of the combination tool is controlled, the combination tool may be subject to functionality extension. Even with extension of functionality, the thickness of the combination tool would not be greatly increased, and thus the tool is also convenient to operate. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a schematic structural view of a scissors and pliers combination tool in a folded state according to Embodiment 1 of the present invention; 
         FIG. 2  is a schematic structural view of scissors in an unfolded state according to Embodiment 1 of the present invention; 
         FIG. 3  is a schematic structural view of pliers in an unfolded state according to Embodiment 1 of the present invention; 
         FIG. 4  is a schematic structural view of a knife in an unfolded state according to Embodiment 1 of the present invention; 
         FIG. 5  is a schematic structural view of all tools in an unfolded state according to Embodiment 1 of the present invention; 
         FIG. 6  is a schematic structural view of a primary housing according to Embodiment 1 of the present invention; 
         FIG. 7  is an exploded structural view according to Embodiment 1 of the present invention; 
         FIG. 8  is a schematic structural view of scissors according to Embodiment 1 of the present invention; 
         FIG. 9  is a schematic structural view of a scissors handle according to Embodiment 1 of the present invention; 
         FIG. 10  is another schematic structural view of the scissors handle according to Embodiment 1 of the present invention; 
         FIG. 11  is a schematic structural view of pliers according to Embodiment 1 of the present invention; 
         FIG. 12  is a schematic structural view of a pliers handle according to Embodiment 1 of the present invention; 
         FIG. 13  is a schematic structural view of a secondary housing according to Embodiment 1 of the present invention; 
         FIG. 14  is a front view of  FIG. 1 ; 
         FIG. 15  is a rear view of  FIG. 1 ; 
         FIG. 16  is a side view of  FIG. 1 ; 
         FIG. 17  is an A-A sectional view of  FIG. 16 ; 
         FIG. 18  is a schematic structural view of scissors in an unfolded state according to Embodiment 2 of the present invention; 
         FIG. 19  is a schematic structural view of a folded state according to Embodiment 2 of the present invention; 
         FIG. 20  is a side view of  FIG. 19 ; 
         FIG. 21  is a schematic structural view of all the tools in an unfolded state according to Embodiment 3 of the present invention; 
         FIG. 22  is a schematic structural view of a folded state according to Embodiment 3 of the present invention; 
         FIG. 23  is another schematic structural view of the folded state according to Embodiment 3 of the present invention; 
         FIG. 24  is a schematic view of scissors in an unfolded state according to Embodiment 3 of the present invention. 
         FIG. 25  is a schematic structural view of pliers in an unfolded state according to Embodiment 3 of the present invention. 
         FIG. 26  is a schematic view of a knife in an unfolded state according to Embodiment 3 of the present invention; 
         FIG. 27  is a side view of a folded state according to Embodiment 3 of the present invention; 
         FIG. 28  is a B-B sectional view of  FIG. 27 ; 
         FIG. 29  is a C-C sectional view of  FIG. 27 ; and 
         FIG. 30  is an exploded structural view according to Embodiment 3 of the present invention; 
     
    
    
     DETAILED DESCRIPTION 
     The present invention is further described with reference to specific embodiments and attached drawings. The drawings are for illustration purpose only, but shall not be construed as limitations to the present invention. For better illustration of the following embodiments, some parts or components would be omitted, scaled up or scaled down in the drawings, which are not indicative of the practical sizes. For a person skilled in the art, it shall be understandable that some commonly known structures and description thereof are omitted for brevity. 
     Embodiment 1 
     With reference to  FIG. 1 ,  FIG. 2 ,  FIG. 3 ,  FIG. 4 ,  FIG. 5 , and  FIG. 7 , a scissors and pliers combination tool  100  comprises: scissors  120  having a front end and a rear end, and comprising a first scissors blade  121  and a second scissors blade  122  that are hinged through a first axle  141  at a central portion; pliers  130  having a front end and a rear end, and comprising a first gripping jaw  131  and a second gripping jaw  132  that are hinged through a second axle  142  at a central portion; a primary housing  110  having a first end portion  111  and a second end portion  112 , a first U-shaped groove  151  being formed at the first end portion  111  and a second U-shaped groove  152  being formed at the second portion  112 , wherein an opening direction of the first U-shaped groove  151  is reverse to that of the second U-shaped groove  152 , the rear end of the first scissors blade  121  is hinged through a third axle  143  to the first end portion  111 , and the rear end of the first gripping jaw  131  is hinged through a fourth axle  144  to the second end portion  112 ; a scissors handle  160 , a front end of the scissors handle  160  being hinged to the rear end of the second scissors blade  122  through a fifth axle  145 , and a third U-shaped groove  153  being disposed on a side facing towards the scissors  120 ; and a pliers handle  170 , a front end of the pliers handle  170  being hinged to the rear end of the second gripping jaw  132  through a sixth axle  146 , and a fourth U-shaped groove  154  being disposed on a side facing towards the gripping jaw  130 . The scissors and pliers combination tool  100  further comprises a secondary housing  180 , wherein a shape of the secondary housing  180  is as illustrated in  FIG. 13 , and the secondary housing  180  is disposed on a side face of the primary housing  110 , and is connected to the side face of the primary housing  110  via the third axle  143  and the fourth axle  144 . The secondary housing  180  forms a fifth U-shaped groove  155 , wherein a blade  181  is foldably mounted in the fifth U-shaped groove  155 , the blade  181  being rotatably connected via the fourth axle  144 . An inner side face of the secondary housing  180  is provided with a locking shrapnel  182 , the locking shrapnel  182  abutting against a side face of the blade  181  when the blade  181  is folded into the fifth U-shaped groove  155 . A belt clamp  193  is further disposed on the other side of the primary housing  110  relative to the secondary housing  180 . 
     As illustrated in  FIG. 1 , the scissors  120 , the pliers  130 , and the blade  181  all have a folded state; and as illustrated in  FIG. 2 ,  FIG. 3 ,  FIG. 4 , and  FIG. 5 , the scissors  120 , the pliers  130 , and the blade  181  all have an unfolded state. Through comparison with  FIG. 2 ,  FIG. 3 , and  FIG. 5 , a folding or unfolding direction of the scissors  120  is reverse to that of the pliers  130 . When the scissors  120  are coming to the folded state from the unfolded state, i.e., from the state as illustrated in  FIG. 2  to the state as illustrated in  FIG. 1 , the scissors  120  rotate around the third axle  143  towards the primary housing  110  and the scissors handle  160  rotates around the fifth axle  145  towards the primary housing  110 , such that the scissors  120  are folded in a space formed by the first U-shaped groove  151  and the third U-shaped groove  153 . When the pliers  130  are coming to the folded state from the unfolded state, i.e., from the state as illustrated in  FIG. 3  to the state as illustrated in  FIG. 1 , the pliers  130  rotate around the fourth axle  144  towards the primary housing  110  and the pliers handle  170  rotates around the sixth axle  146  towards the primary housing  110 , such that the pliers  130  are folded in a space formed by the second U-shaped groove  152  and the fourth U-shaped groove  154 . When the blade  181  is coming to the folded state from the unfolded state, i.e., from the state as illustrated in  FIG. 4  to the state as illustrated in  FIG. 1 , the blade  181  rotates around the fourth axle  144  towards the secondary housing  180 , such that the blade  181  is folded in the fifth U-shaped groove  155 , and is locked by the locking shrapnel  182  by abutting thereagainst. The folded states of the scissors  120  and the pliers  130  are as illustrated in  FIG. 14 ,  FIG. 15 , and  FIG. 17 , and the folded state of the blade  181  is as illustrated in  FIG. 14 . 
     When the scissors  120  are coming to the unfolded state from the folded state, i.e., from the state as illustrated in  FIG. 1  to the state as illustrated in  FIG. 2 , the scissors handle  160  rotates around the fifth axle  145  far away from the primary housing  110  and the scissors  120  rotate around the third axle  143  far away from the primary housing  110 , such that the scissors handle  160  and the primary housing  110  form an operation handle of the scissors  120 . When the pliers  130  are coming to the unfolded state from the folded state, i.e., from the state as illustrated in  FIG. 1  to the state as illustrated in  FIG. 3 , the pliers handle  170  rotates around the sixth axle  146  far away from the primary housing  110  and the pliers  130  rotate around the fourth axle  144  far away from the primary housing  110 , such that the pliers handle  170  and the primary housing  110  form an operation handle of the pliers  130 . 
     In this embodiment, a rear end of the scissors handle  160  is connected to a slotted screwdriver  191 , and a rear end of the pliers handle  170  is connected to a cross screwdriver  192 , as illustrated in  FIG. 2 ,  FIG. 3 ,  FIG. 5 , and  FIG. 7 . The slotted screwdriver  191  is mounted in the third U-shaped groove  153 , a tool head is protrusively formed at a front end of the slotted screwdriver  191 , and an end face mating with the scissors  120  in the folded state is formed at a rear end of the slotted screwdriver  191 , as illustrated in  FIG. 17 . The cross screwdriver  192  is mounted in the fourth U-shaped groove  154 , a tool head is protrusively formed at a front end of the cross screwdriver  192 , and an end face mating with the pliers  130  in the folded state is formed at a rear end of the cross screwdriver  192 , as illustrated in  FIG. 17 . As illustrated in  FIG. 17 , in the folded state, the rear end of the slotted screwdriver  191  abuts against the front end of the scissors  120 , and the rear end of the cross screwdriver  192  abuts against the front end of the pliers  130 . Under collaboration of the scissors handle  160  and the pliers handle  170 , a side face opening of the primary housing  110  may be closed, thereby protecting the scissors  120  and the pliers  130 , and preventing the scissors  120  and the pliers  130  from sliding out. 
     With reference to  FIG. 6 ,  FIG. 8 ,  FIG. 9 , and  FIG. 10 , on the primary housing  110 , a first cantilever shrapnel  101  is formed on a side bottom plate of the first U-shaped groove  151  facing towards the scissors  120 , and on the scissors handle  160 , a third cantilever shrapnel  103  is formed on a side bottom plate of the third U-shaped groove  153  facing towards the scissors  120 . Rear ends of the first scissors blade  121  and the second scissors blade  122  of the scissors  120  have arc-shaped faces, wherein: a first step  123  and a third step  124  that mate with the first cantilever shrapnel  101  and the third cantilever shrapnel  103  in the unfolded state are formed on inner sides of the rear ends, as illustrated in  FIG. 2 ; and a first protrusion  125  and a third protrusion  126  that mate with the first cantilever shrapnel  101  and the third cantilever shrapnel  103  in the folded state are formed on outer sides of the rear ends, as illustrated in  FIG. 1  and  FIG. 15 . 
     With reference to  FIG. 6 ,  FIG. 11 , and  FIG. 12 , on the primary housing  110 , a second cantilever shrapnel  102  is formed on a side bottom plate of the second U-shaped groove  152  facing towards the pliers  130 , and on the pliers handle  170 , a fourth cantilever shrapnel  104  is formed on a side bottom plate of the fourth U-shaped groove  154  facing towards the pliers  130 . Rear ends of the first gripping jaw  131  and the second gripping jaw  132  have arc-shaped faces, wherein: a second step  133  and a fourth step  134  that mate with the second cantilever shrapnel  102  and the fourth cantilever shrapnel  104  in the unfolded state are formed on inner sides of the rear ends, as illustrated in  FIG. 3 ; and a second protrusion  135  and a fourth protrusion  136  that mate with the second cantilever shrapnel  102  and the fourth cantilever shrapnel  104  in the folded state are formed on outer sides of the rear ends, as illustrated in  FIG. 15 . 
     With the above structure, in the folded state, the entire scissors and pliers combination tool  100  has a small thickness, as illustrated in  FIG. 16 , which is convenient for accommodation. Even in the unfolded state, the tool is not very thick, still facilitating operations of the tool. For ease of operation of the scissors  120 , an annular groove  127  is disposed between two opposite faces of the first scissors blade  121  and the second scissors blade  122 , wherein an annular spring  128  is mounted in the annular groove  127 , the annular spring  128  having a preset resilience to support the first scissors blade  121  and the second scissors blade  122  in an open state when the scissors  120  are in an unfolded state. 
     Embodiment 2 
     If the thickness of the combination tool needs to be further reduced based on Embodiment 1, blades having a smaller thickness may be employed, and the belt clamp may not be used.  FIG. 18  illustrates a scissors and pliers combination tool  200  in an unfolded state. In this state, pliers  230  are folded between a primary housing  210  and a pliers handle  270 , and scissors  220  and a scissors handle  260  are in an unfolded state. A secondary housing  280  is disposed on a side face of the primary housing  210 . A blade  281  having a smaller thickness than that of the blade  181  is disposed in the secondary housing  281 . For ease of observation, in  FIG. 18 , the blade  280  is separately illustrated. Since the blade  280  has a smaller thickness, the thickness of the secondary housing  280  may also be greatly reduced.  FIG. 19  illustrates the above structure in a folded state. As seen from  FIG. 20 , the entire combination tool formed of the primary housing  210  and the secondary housing  280  according to this embodiment has a smaller thickness than that of the combination tool according to Embodiment 1. 
     Embodiment 3 
     This embodiment is an improvement made based on Embodiment 1, with reference to  FIG. 21  and  FIG. 30 , a scissors and pliers combination tool  300  comprises: scissors  320  having a front end and a rear end, and comprising a first scissors blade  321  and a second scissors blade  322  that are hinged through a first axle  341  at a central portion; pliers  330  having a front end and a rear end, and comprising a first gripping jaw  331  and a second gripping jaw  332  that are hinged through a second axle  342  at a central portion; a primary housing  310  having a first end portion  311  and a second end portion  312 , a first U-shaped groove  351  being formed at the first end portion  311  and a second U-shaped groove  352  being formed at the second portion  312 , wherein an opening direction of the first U-shaped groove  351  is reverse to that of the second U-shaped groove  352 , the rear end of the first scissors blade  321  is hinged through a third axle  343  to the first end portion  311 , and the rear end of the first gripping jaw  331  is hinged through a fourth axle  344  to the second end portion  312 ; a scissors handle  360 , a front end of the scissors handle  360  being hinged to the rear end of the second scissors blade  322  through a fifth axle  345 , and a third U-shaped groove  353  being disposed on a side facing towards the scissors  320 ; and a pliers handle  370 , a front end of the pliers handle  370  being hinged to the rear end of the second gripping jaw  332  through a sixth axle  346 , and a fourth U-shaped groove  354  being disposed on a side facing towards the gripping jaw  330 . The scissors and pliers combination tool  300  further comprises a secondary housing  380 , wherein the secondary housing  180  is disposed on a side face of the primary housing  310 , and is connected to the side face of the primary housing  310  via the third axle  343  and the fourth axle  344 . The secondary housing  380  forms a fifth U-shaped groove  355 , wherein a blade  381  is foldably mounted in the fifth U-shaped groove  355 , the blade  381  being rotatably connected via the fourth axle  344 . The scissors and pliers combination tool  300  further comprises a secondary handle  371 , wherein the secondary handle  371  is disposed on a side of the pliers handle  370  facing towards the secondary housing  380 , having a thickness the same as that of the secondary housing  380 , wherein the secondary handle  371  abuts against, together with the pliers handle  370 , a side back to an opening of the fifth U-shaped groove  355  of the secondary housing  380  after being folded, and the secondary handle  371  forms a sixth U-shaped groove  356 , an opening direction of the sixth U-shaped groove being reverse to an opening direction of the fifth U-shaped groove  355 , and a file  372  being internally foldably mounted in the sixth U-shaped groove  356 , the file  372  being rotatably connected to the sixth axle  346 . A belt clamp  393  is further disposed on the other side of the pliers handle  370  relative to the secondary handle  371 . 
     In this embodiment, a rear end of the scissors handle  360  is connected to a slotted screwdriver  391 , and a rear end of the pliers handle  370  is connected to a cross screwdriver  392 , as illustrated in  FIG. 21 . The slotted screwdriver  391  is mounted in the third U-shaped groove  353 , a tool head is protrusively formed at a front end of the slotted screwdriver  391 , and an end face mating with the scissors  320  in the folded state is formed at a rear end of the slotted screwdriver  391 . The cross screwdriver  392  is mounted in the fourth U-shaped groove  354 , a tool head is protrusively formed at a front end of the cross screwdriver  392 , and an end face mating with the pliers  330  in the folded state is formed at a rear end of the cross screwdriver  392 . As illustrated in  FIG. 22 ,  FIG. 23 , and  FIG. 28 , in the folded state, the rear end of the slotted screwdriver  391  abuts against the front end of the scissors  320 , and the rear end of the cross screwdriver  392  abuts against the front end of the pliers  330 . Under collaboration of the scissors handle  360  and the pliers handle  370 , a side face opening of the primary housing  310  may be closed, thereby protecting the scissors  320  and the pliers  330 , and preventing the scissors  320  and the pliers  330  from sliding out. 
     As illustrated in  FIG. 22  and  FIG. 23 , the scissors  320 , the pliers  330 , the blade  381 , and the file  372  all have a folded state; and as illustrated in  FIG. 21 ,  FIG. 24 ,  FIG. 25 , and  FIG. 26 , the scissors  320 , the pliers  330 , the blade  381 , and the file  372  all have an unfolded state. Through comparison with  FIG. 21 ,  FIG. 24 , and  FIG. 25 , a folding or unfolding direction of the scissors  320  is reverse to that of the pliers  330 . When the scissors  320  are coming to the folded state from the unfolded state, i.e., from the state as illustrated in  FIG. 21  to the state as illustrated in  FIG. 22  and  FIG. 23 , the scissors  320  rotate around the third axle  343  towards the primary housing  310  and the scissors handle  360  rotates around the fifth axle  345  towards the primary housing  310 , such that the scissors  320  are folded in a space formed by the first U-shaped groove  351  and the third U-shaped groove  353 . The pliers  330  rotate around the fourth axle  344  towards the primary housing  310  and the pliers handle  370  rotates around the sixth axle  346  towards the primary housing  310 , such that the pliers  330  are folded in a space formed by the second U-shaped groove  352  and the fourth U-shaped groove  354 . The blade  381  rotates around the fourth axle  344  towards the secondary housing  380  such that the blade  381  is folded in the fifth U-shaped groove  355 , and the file  372  rotates around the sixth axle  346  towards the secondary handle  371  such that the file  372  is folded in the sixth U-shaped groove  356 . With the above structure, in the folded state, a side view of the tool is as illustrated in  FIG. 27 , and an internal structural view of the tool is as illustrated in  FIG. 28  and  FIG. 29 . As seen from the structure in the folded state, the volume of the tool is reduced and the thickness of the tool is small, and thus it is convenient to carry and accommodate the tool. 
     When the scissors  320  are coming to the unfolded state from the folded state, i.e., from the state as illustrated in  FIG. 22  and  FIG. 23  to the state as illustrated in  FIG. 24 , the scissors handle  360  rotates around the fifth axle  345  far away from the primary housing  310  and the scissors  320  rotate around the third axle  343  far away from the primary housing  310 , such that the scissors handle  360  and the primary housing  310  form an operation handle of the scissors  320 . When the pliers  330  are coming to the unfolded state from the folded state, i.e., from the state as illustrated in  FIG. 22  and  FIG. 23  to the state as illustrated in  FIG. 25 , the pliers handle  370  rotates around the sixth axle  346  far away from the primary housing  310  and the pliers  330  rotate around the fourth axle  344  far away from the primary housing  310 , such that the pliers handle  370  and the primary housing  310  form an operation handle of the pliers  330 . Further, as illustrated in  FIG. 26 , the blade  381  rotates around the fourth axle  344  far away from the secondary housing  380  such that the blade  381  rotates out of the fifth U-shaped groove  355 , and the file  372  rotates around the sixth axle  346  far away from the secondary handle  371  such that the file  372  rotates out of the sixth U-shaped groove  356 . 
     The terms for denoting the position relationships in the drawings are merely for exemplary illustration, but shall not be construed as limitations to the present invention. Obviously, the above embodiments are merely exemplary ones for illustrating the present invention, but are not intended to limit the implementation of the present invention. Persons of ordinary skills in the art may derive other modifications and variations based on the above embodiments. All embodiments of the present invention are not exhaustively listed herein. Any modification, equivalent replacement, or improvement made without departing from the spirit and principle of the present invention should fall within the protection scope of the present invention.