Patent Publication Number: US-2016221162-A1

Title: Wrench combining sleeve

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a wrench technology field, specifically, to a multifunction wrench combining a sleeve. 
     2. Description of the Related Art 
     Wrench is a general hardware tool which is utilized widely. Wrench is a tool that is indispensable. It is simple and portable. A contact surface is located between the screws and the wrench, so the stress is sufficient and the wrench is hard to damage. Meanwhile, the wrench is easy to manufacture, and the cost of the wrench is low. However, the present wrench only has single function, each kind of wrench corresponds to a kind of screw. 
     SUMMARY OF THE INVENTION 
     To solve the issue that the wrench only has single function, the invention discloses a multifunction wrench combining a sleeve. 
     To implement the above purpose, the technical solution of the invention is as follows:
         a wrench combining a sleeve, wherein comprises a wrench body, a rotating sleeve, a locking strip, a hexagonal sleeve and magnetic steel;   the locking strip is installed inside the rotating sleeve, the hexagonal sleeve is arranged in the rotating sleeve, and the magnetic steel sleeves one end of the hexagonal sleeve, so a sleeve device is formed, the wrench body penetrates through the sleeve device, wherein the outline of two external circles of the locking strip is of a gradually-opened face structure, a face at which the rotating sleeve is connected to the external circle of the locking strip matches with the gradually-opened face structure, and the two gradually-opened face structures can be mutually locked or released.       

     The above-mentioned wrench combining a sleeve, wherein a through-hole is arranged in center of the locking strip, the through-hole matches with a structure of an outline of the wrench. 
     The above-mentioned wrench combining a sleeve, wherein a boss is arranged at one end of the hexagonal sleeve, the boss matches with diameter of an internal circle of the magnetic steel in size. 
     The above-mentioned wrench combining a sleeve, wherein the outline of the hexagonal sleeve is a circular structure, the circular structure matches with diameter of an internal circle of the rotating sleeve in size. 
     The above-mentioned wrench combining a sleeve, wherein a step is arranged at bottom of the rotating sleeve, and the locking strip relies onto the step. 
     Due to the above-mentioned technical, the invention has the following positive effects:
         (1) via the gradually-opened face between the rotating sleeve and the locking strip, the sleeve device is controlled to be fixed on or released from the wrench body and screws are absorbed via the magnetic steel.   (2) when the sleeve device slides to a corresponding position on the wrench body, functions of the wrench for operating screws/bolts or inner angle screws/bolts can be achieved and functionality of the wrench is effectively improved.       

    
    
     
       BRIEF DESCRIPTIONS OF THE DRAWINGS 
         FIG. 1  is an explosion diagram of the embodiment of a wrench combining a sleeve according to the present invention; 
         FIG. 2  is a structure diagram of a wrench combining a sleeve according to the present invention; 
         FIG. 3  is a section view in A-A section in  FIG. 2 ; 
         FIG. 4  is a side section view of a wrench combining a sleeve in the Embodiment 1 of the invention; 
         FIG. 5  is an explosion diagram of a wrench combining a sleeve in the Embodiment 2 of the invention; 
         FIG. 6  is a section view of a wrench combining a sleeve in the Embodiment 2 of the invention; 
         FIG. 7  is a structure diagram of a first external sleeve in the Embodiment 2 of the invention; 
         FIG. 8  is a section view of a first external sleeve in the Embodiment 2 of the invention; 
         FIG. 9  is a structure diagram of a first internal sleeve in the Embodiment 2 of the invention; 
         FIG. 10  is an explosion diagram of a wrench combining a sleeve in the Embodiment 3 of the invention; 
         FIG. 11  is a section view of a wrench combining a sleeve in the Embodiment 3 of the invention; 
         FIG. 12  is a structure diagram of a second external sleeve in the Embodiment 3 of the invention; 
         FIG. 13  is a structure diagram of a second internal sleeve in the Embodiment 3 of the invention. 
     
    
    
     DETAILED DESCRIPTION 
     The following description illustrates the invention by combining the drawings and the embodiments, but it can not be limited for the invention. 
     Embodiment 1 
     Referring to  FIGS. 1 to 4 , a wrench combining a sleeve, comprising a wrench body  1 , a rotating sleeve  2 , a locking strip  3 , a hexagonal sleeve  4  and magnetic steel  5 :
         the locking strip  3  is installed inside the rotating sleeve  2  and at the bottom of the rotating sleeve  2 , the hexagonal sleeve  4  is arranged in the rotating sleeve  2  and is arranged on the upper of the rotating sleeve  2 , the magnetic steel  5  sleeves one end of the hexagonal sleeve  4 , so a sleeve device is formed. On the central of each member which consists of the sleeve device, there is a through-hole structure which has the same structure with a structure of an outline of the wrench body  1 , so that the wrench body  1  can penetrate through the sleeve device. Wherein, the outline of two external circles of the locking strip  3  is of a gradually-opened face structure, namely a structure similar to an eccentric circle, a face at which the rotating sleeve  2  is connected to the external circle of the locking strip  3  matches with the gradually-opened face structure, namely a structure similar to an eccentric circle, which is opposite to the structure of the locking strip  3 . Therefore the two gradually-opened face structures can be mutually locked or released via the two opposite eccentric circle structures, that is gradually-opened face structure.       

     Based on above-mentioned context, the invention has the following embodiments, referring to  FIG. 1  to  FIG. 4 . 
     In a further embodiment, a through-hole is arranged in center of the locking strip  3 , the through-hole matches with a structure of an outline of the wrench body  1 , so the wrench body  1  can penetrate through the locking strip  3 . 
     In a further embodiment, a boss  6  is arranged at one end of the hexagonal sleeve  4 , the size of external circle of the boss  6  is a little less than the size of external circle of the hexagonal sleeve  4 , the boss  6  matches with diameter of an internal circle of the magnetic steel  5  in size, so the magnetic steel  5  can sleeve the hexagonal sleeve  4 . 
     In a further embodiment, the outline of the hexagonal sleeve  4  is a circular structure, the circular structure matches with diameter of an internal circle of the rotating sleeve  2  in size, so that the hexagonal sleeve  4  is installed in the rotating sleeve  2  exactly, and is in clearance fit with the rotating sleeve  2 . 
     In a further embodiment, a step  7  is arranged at bottom of the rotating sleeve  2 , the locking strip  3  relies onto the step  7 . 
     The user can realize the feature and function of the invention according to the following description. 
     When the user turns the rotating sleeve  2  anticlockwise, the gradually-opened face structure of the rotating sleeve  2  presses and locks the gradually-opened face structure of the locking strip  3  gradually, as the shape of the through-hole in center of the locking strip  3  matches the internal hexagonal wrench, it is relatively static to the wrench body  1 . Therefore, the whole sleeve device part is fixed on the straight bar position of the internal hexagonal wrench body  1 . When turning the rotating sleeve  2  clockwise, the gradually-opened face structure of the rotating sleeve  2  releases the gradually-opened face structure of the locking strip  3  gradually, so that the sleeve device can slides on the internal hexagonal wrench body. 
     Referring to  FIG. 4 , when the magnetic steel  5  of the sleeve device is partially located on the left side of the right end of the wrench body  1 , the wrench body  1  of the invention is suitable for the internal hexagonal screw; on the contrary, when the magnetic steel  5  of the sleeve device is partially located on the right side of the right end of the wrench body  1 , the wrench body  1  of the invention is suitable for the external hexagonal bolt, that is bolt. Other than the general wrench corresponding to one screw, the wrench is flexible and has widely range for usage. 
     Embodiment 2 
     Referring to  FIGS. 5 to 9 , a second kind of wrench combining a sleeve of the invention, comprising a wrench body  1  and a sleeve device. 
     In Embodiment 2, the sleeve device includes a first internal sleeve  117 , a first external sleeve  116  and a magnet ring  112 . The magnet ring  112  and the first internal sleeve  117  are in interference fit with each other, the first external sleeve  116  sleeves the first internal sleeve  117 , a ring slot  121  is arranged on the first internal sleeve  117 , a lug  119  matching the ring slot  121  is arranged in the internal circle of the first external sleeve  116 . The first internal sleeve  117  fits the first external sleeve  116  and it can sleeve on any end of the wrench body  1  slidably. The first internal sleeve  117  and the first external sleeve  116  can be in interference fit with the wrench body  1 . 
     In a further embodiment, a plurality of claws  120  are arranged on the first external sleeve  116 , relative to one end of the magnet ring  112 . The plurality of claws  120  contact the corresponding surfaces of the wrench body  1  respectively. 
     In a further embodiment, a plurality of bar grooves  122 , relative to one end of the external circle of the magnet ring  112 , are arranged on the first external sleeve  116 . 
     In a further embodiment, a plurality of bar grooves  122  are spaced apart and are arranged on the first external sleeve  116 . 
     The user can realize the feature and function of the invention according to the following description. 
     Referring to  FIGS. 1 to 5 , in the first solution of the embodiment, a wrench combining a sleeve, the first external sleeve  116  sleeves the first internal sleeve  117 , a ring slot  121  is arranged on the first internal sleeve  117  (see  FIG. 13 ), a lug  119  is arranged on the first external sleeve  116  fitting with ring slot  121  (see  FIG. 12 ), the first external sleeve  116  and the first internal sleeve  117  are in fit with the lug  119  by the ring slot  121 , the magnet ring  112  is in interference fit with the first internal sleeve  117 , so that the magnet ring  112  fixes on the first internal sleeve  117  firmly. When the first external sleeve  116  sleeves on the first internal sleeve  117 , the lower end of the first external sleeve  116  relies on the magnet ring  112 . The diameter of the first external sleeve  116 , relative to the three claws of the one end of the magnet ring  112 , is less than the diameter of the wrench body  1 , so that the first external sleeve  116  can contact the corresponding surface of the wrench tightly, thus the sleeve device sleeves the wrench firmly without falling. The sleeve device can sleeve any one of the two ends of the wrench, so that different requirements are met. When the sleeve device is located on any end of the two ends, it is suitable for the hexagonal screw. When the sleeve device is located on the middle of the two ends, it is suitable for the internal hexagonal screw. Wherein, the magnet ring  112  is configured to absorb the screws. 
     Embodiment 3 
     Referring to  FIGS. 10 to 13 , a third kind of wrench combining a sleeve of the invention, comprising a wrench body  1  and a sleeve device. The sleeve device detachably sleeves any end of the wrench body  1 . 
     In Embodiment 3, the sleeve device includes a second external sleeve  110 , a second internal sleeve  111 , a magnet ring  112 , a steel ball  113  and a spring  114 . The magnet ring  112  and the second internal sleeve  111  are in interference fit with each other, the second external sleeve  110  sleeves the second internal sleeve  111 , a hole is arranged on the second internal sleeve  111 , the steel ball  113  is installed in the round through-hole  115 . The spring  114  is connected to the steel ball  113 , the steel ball  113  and the spring  114  are in fit within the round through-hole  115 , and they are located between the second external sleeve  110  and the second internal sleeve  111 . The diameter of the round through-hole  115  is less than the diameter of the steel ball  113 , so that the steel ball  113  cannot penetrate through the round through-hole  115 . The gap between the second external sleeve  110  and the second internal sleeve  111  makes the spring  114  compressed, the elastic force is generated and the part of the steel ball  113  contacts the surface of the wrench body tightly. 
     In a further embodiment, a plurality of bar grooves  122 , relative to one end of the external circle of the magnet ring  112 , are arranged on the second external sleeve  110 . 
     In a further embodiment, a plurality of bar grooves  122  are spaced apart and are arranged on the second external sleeve  110 . 
     In a further embodiment, the diameter of the round through-hole  115  is less than the diameter of the steel ball  113 . 
     The user can realize the feature and function of the invention according to the following description. 
     Referring to  FIGS. 6 to 9 , in a second solution of the embodiment, the second external sleeve  110  sleeves the second internal sleeve  111 , a round through-hole  115  is arranged on the second internal sleeve  111 . The diameter of the round through-hole  115  is less than the diameter of the steel ball  113 , so that the steel ball  113  cannot penetrate through the round through-hole  115 . The spring  114  and the steel ball  113  are in fit within the round through-hole  115 , and they are located between the second external sleeve  110  and the second internal sleeve  111 . As the gap between the second external sleeve  110  and the second internal sleeve  111  is small, so the spring  114  has a space to be compressed. The spring  114  presses the steel ball  113 , so that the steel ball  113  contacts the surface of the wrench body firmly by the round through-hole  115 . The sleeve device can also connect to the wrench body tightly when the wrench body expands or contracts. The magnet ring  112  is in interference fit with the second internal sleeve  111 , so that the magnet ring  112  fixes on the second internal sleeve  111  firmly. When second external sleeve  110  sleeves on the second internal sleeve  111 , the lower end of the second external sleeve  110  relies on the magnet ring  112 . The diameter of the second external sleeve  110 , relative to the three claws of the one end of the magnet ring  112 , is less than the diameter of the wrench body  1 , so that the second external sleeve  110  can contact the corresponding surface of the wrench tightly, thus the sleeve device sleeves the wrench firmly without falling. The sleeve device can sleeve any one of the two ends of the wrench, so that different requirements are met. When the sleeve device is located on any end of the two ends, it is suitable for the hexagonal screw. When the sleeve device is located on the middle of the two ends, it is suitable for the internal hexagonal screw. Wherein, the magnet ring  112  is configured to absorb the screws. 
     The description listed above is the preferred embodiments, it can not limit the manner or protect scope of the invention. It should be understood that the changes and modifications can be made without departing from the spirit and scope of the present disclosure and are in the scope of the invention.