Torque structure

A torque wrench comprising:

• a first body, a second body, a first fixing member, an elastic member, a push block, a locking unit, an adjusting unit, a third body unit, a control unit, a fourth body unit, and a fitting member;
• wherein:
• the first body has a first end provided with a first receiving chamber which is a hollow circular hole;
• the first body is provided with a first indicator;
• the first indicator is arranged on an exterior of the first body and includes multiple graduations spaced and arranged annularly;
• the first body is provided with a pivoting section distant from the first indicator;
• the pivoting section has a circular shape;
• the first body is provided with two first slots connected to the first receiving chamber;
• the two first slots are arranged on the pivoting section and are opposite to each other;
• each of the two first slots has an elongate shape;
• the first body is provided with a first retaining groove arranged on the pivoting section;
• the first retaining groove has an annular shape and is connected to the two first slots;
• the first body is provided with a second retaining groove having an annular shape;
• a determined distance is defined between the first retaining groove and the second retaining groove;
• the first body has a second end provided with a second receiving chamber connected to the first receiving chamber;
• the second receiving chamber has a diameter more than that of the first receiving chamber;
• the first body is provided with a first pivot portion arranged in the pivoting section;
• the first pivot portion is ring shaped with a circular hole and is connected to the first receiving chamber;
• the first pivot portion has a diameter less than that of the first receiving chamber;
• the second receiving chamber, the first receiving chamber, and the first pivot portion penetrate the first body;
• the first body is provided with two first fitting portions arranged on an opening of the first pivot portion;
• the two first fitting portions are arranged symmetrically;
• each of the two first fitting portions is a screw hole;
• the second body is pivotally connected with the first body;
• the first body is rotatable relative to the second body to adjust a torque value;
• the second body is partially received in the first receiving chamber and has a first end assembled with a drive portion protruding from the first body;
• the second body has a second end provided with a first guide slot extending in a lengthwise direction of the second body;
• the first guide slot has an elongate shape and is hidden in the first receiving chamber;
• the first guide slot is distant from the drive portion;
• the second body is provided with multiple first fixing portions close to the first guide slot;
• the first guide slot is arranged between the drive portion and the first fixing portions;
• the first fixing portions are arranged annularly about an axis of the second body;
• two first fixing portions of the multiple first fixing portions are arranged symmetrically;
• the second end of the second body has an outer peripheral face provided with multiple positioning grooves which are arranged annularly about the axis of the second body;
• the second body is provided with a second guide slot hidden in the first receiving chamber;
• the second guide slot is opposite to the first guide slot and has an elongate shape;
• the first fixing member extends through the second body and the drive portion so that the second body is assembled with the drive portion;
• the elastic member and the push block are received in the second body and elastically biased on an end of the drive portion;
• the drive portion is driven by the elastic member and the push block and has a torque slip function when the torque value reaches a preset value;
• the locking unit is assembled with the second body;
• the locking unit is not movable or rotatable relative to the second body;
• the adjusting unit is assembled with the second body and the locking unit;
• the adjusting unit directly or indirectly pushes and presses the elastic member;
• when the first body is rotated relative to the second body, the first body drives the adjusting unit to operate and adjust the torque value;
• the adjusting unit includes an adjusting member, a first seat, and a third fixing member;
• the adjusting member is mounted in the second body and the locking unit;
• the adjusting member is rotated in place in the second body and the locking unit;
• the adjusting member is provided with a spacer received in the second body;
• the spacer has a first end provided with a first screw portion received in the second body;
• the spacer has a second end provided with a third pivot portion pivotally mounted in the locking unit;
• the third pivot portion is rotated relative to the locking unit;
• the spacer is located between the first screw portion and the third pivot portion;
• the third pivot portion is provided with a first mounting section;
• the third pivot portion is located between the spacer and the first mounting section;
• the adjusting member is provided with a second fitting portion formed in the first mounting section;
• the second fitting portion is a screw hole;
• the first mounting section is provided with multiple second slots connected to the second fitting portion;
• the first mounting section is expanded and contracted elastically by provision of the second slots;
• the second fitting portion has an end provided with a first inclined face;
• the first seat is received in the second body;
• the first seat has a first end provided with a first abutting face pressing the elastic member which is elastically biased between the second body and the first abutting face;
• the first seat has a second end provided with a second screw portion screwed onto the first screw portion;
• when the first screw portion is rotated relative to the second screw portion, the first seat is moved linearly in the second body to adjust a length of the elastic member, so that the first seat is moved to approach the spacer or moved away from the spacer;
• the second screw portion is a screw hole;
• the first seat is provided with a first receiving hole aligning with the first guide slot;
• the first receiving hole has a circular shape and has an axis perpendicular to that of the first seat;
• the first seat is provided with a second receiving hole aligning with the second guide slot;
• the second receiving hole has a circular shape and has an axis perpendicular to that of the first seat;
• the third fixing member is received in the second guide slot and the second receiving hole;
• the third fixing member is movable in the second guide slot;
• the first seat is limited by the third fixing member and is moved linearly in the second body;
• the third fixing member is a pin;
• the third body unit is assembled with the first body, the second body, and the adjusting unit;
• the third body unit is received in the second receiving chamber;
• the third body unit is driven by the adjusting unit and moved in the second receiving chamber;
• the third body unit includes a fixed block, a limit member, a third body, and a fourth fixing member;
• the fixed block is movable in the first guide slot and is provided with a first recess and a second recess;
• the first recess is an elongate slot and aligns with the first receiving hole;
• the second recess is connected to the first recess;
• the second recess is an elongate slot and is larger than the first recess;
• the fixed block has an end provided with a third fixing portion;
• the third fixing portion is a hole penetrating the fixed block;
• the limit member in turn extends through the second recess, the first recess, and the first receiving hole;
• the fixed block and the first seat are assembled by the limit member;
• the limit member is a rivet or a screw member;
• the limit member has a head received in the second recess;
• the third body is received in the second receiving chamber and has an end partially protruding from the first body;
• the third body has a cylindrical shape and is assembled with the fixed block;
• the third body is provided with a third receiving chamber mounted on the second body;
• the third body is provided with a second indicator corresponding to the first indicator;
• the second indicator extends in a lengthwise direction of the third body;
• the second indicator aligns with the first guide slot;
• the third body is provided with a fourth fixing portion aligning with the third fixing portion;
• the fourth fixing portion is connected to the third receiving chamber;
• the fourth fixing portion has an axis perpendicular to that of the third body;
• the fourth fixing member in turn extends through the fourth fixing portion and the third fixing portion;
• the third body and the fixed block are assembled integrally by the fourth fixing member so that the third body is moved with the fixed block;
• the control unit is assembled with the first body;
• the control unit is moved axially between a locked position where the first body is non-rotatable relative to the second body and an unlocked position where the first body is rotatable relative to the second body;
• the fourth body unit is assembled with the first body and the adjusting unit;
• the fourth body unit includes a fourth body assembled with the first body and having a first end provided with a second mounting section mounted on the first mounting section;
• the second mounting section is loosely fitted on the first mounting section;
• the fitting member is assembled with the fourth body unit and the adjusting unit;
• the fitting member is a threaded rod;
• the fitting member extends through the second mounting section and is screwed into the second fitting portion, so that the fourth body unit is assembled with the adjusting unit;
• the fitting member has an end provided with a second inclined face abutting the first inclined face;
• the second slots are slightly expanded outward by screwing of the fitting member, and the first mounting section presses the second mounting section, so that the second mounting section is closely fitted on the first mounting section;
• and
• the fourth body unit is assembled with the adjusting unit closely without forming a gap therebetween.