Tightening tool

Abstract

The utility model relates to the field of electric screwdrivers, in particular to a tightening tool, which is characterized in that a motor is arranged in a rear cover, the rear cover is connected with a speed reducing mechanism through a quick release structure, a front cover is sleeved on a main shaft, a deformation part is exposed on a body, a first end of the deformation part is connected with the front cover through the quick release structure, and a second end of the deformation part is connected with the speed reducing mechanism through the quick release structure. The interior of the front cover and the interior of the speed reducing mechanism are provided with notch spaces which are communicated with each other, and the second end of the deformation part is provided with a wire passing hole communicated with the interior of the front cover; according to the utility model, the whole structure is optimized, and the arrangement of the front cover is adopted, so that a notch space for a cable to pass through can be constructed, the structure of the speed reducing mechanism can be prevented from being disassembled during disassembly, the maintenance difficulty and the internal wiring mode are reduced, and the center distance of the whole tightening tool is reduced, which means that the whole tightening tool is convenient to disassemble and assemble. And the cables among the tightening tools cannot interfere with each other, so that the situation that the tightening work is influenced due to the disorder of the cables is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the electric wrench field especially points to a kind of tightening tool. BACKGROUND

[0002] The variety of tightening tool is more, and it is mainly classified into two kinds of mechanical type and manual type.

[0003] Mechanical type is mostly used in cooperation with mechanical hand and other automation equipment, especially in automation industry, application is very extensive.

[0004] Traditional mechanical tightening tool contains sensor, therefore, this tightening tool has cable responsible for sensor signal transmission, and the quantity of this cable is also more, and the corresponding design space is lacked in tightening tool, which leads to cable only leading out from the shell of tightening tool. As mentioned in the foregoing, the current tightening tool is mostly used in the mechanical hand of automation equipment, and the structure of mechanical hand is relatively compact, and the area that can be used for assembly is relatively less, which also shows that the space left between multiple tightening tools is very limited, and this space is crucial between tightening tools, and too small space will cause interference between cables, which also shows that the current tightening tool has the problem of large center distance, and the situation of too large volume affects the normal use of tightening tool.

[0005] The above is only one of the defects, and there are other defects:

[0006] The structure of the current tightening tool is not the usual modular form, but there is a situation that the same component is used between modules, and the number of these components is also more, which also leads to the generation of another problem: more components need to be disassembled during maintenance to maintain the specific module, and at the same time, the large number of components will also affect the problem of large center distance. INVENTION CONTENTS

[0007] To solve the above problems, the utility model provides a kind of tightening tool, which optimizes the maintenance difficulty of tightening tool, and at the same time, the corresponding design is made again inside the tightening tool, to solve various problems caused by cable outside.

[0008] In order to achieve the above object, the utility model discloses the technical scheme that a kind of tightening tool, including body, body includes motor, speed reducer mechanism, main shaft, deformation part and bit, bit is connected with the end of main shaft, the output end of motor is driven main shaft rotation by speed reducer mechanism, deformation part is sleeved on main shaft, strain gauge is equipped on deformation part, it is characterized in that, still including front cover and back cover, motor is set in back cover, back cover is connected by quick release structure with speed reducer mechanism, front cover is sleeved on main shaft, wherein, deformation part is exposed on body, the first end of deformation part is connected with front cover by quick release structure, second end is connected with speed reducer mechanism by quick release structure, the interior of front cover and speed reducer mechanism interior has the slot space of intercommunication, second end of deformation part is equipped with the wire hole that is interconnected with the interior of front cover.

[0009] The utility model has the beneficial effects that:

[0010] The utility model optimizes the structure of the whole, sets the front cover, can construct the slot space that cable passes, can avoid the structure of speed reducer mechanism when disassembling, reduces maintenance difficulty, and simultaneously, the mode of internal wiring makes the center distance of the whole tightening tool smaller, which means that the cables between each tightening tool do not interfere, avoiding the situation that tightening work is affected due to the disorder between cables.

[0011] In addition, the motor is connected with the front cover, the speed reducer is connected with the front cover, etc., when maintaining and protecting, each part can be quickly assembled together through the quick assembly of quick release structure, and the assembly efficiency is high.

[0012] The middle part of deformation part is designed as an annular groove, considering that the deformation part in the utility model is directly exposed on the body, the strain gauge is arranged in the annular groove, in order to protect the strain gauge and prevent the structure of the strain gauge from being damaged, the protective shell in the annular groove is further arranged, and the protective shell covers the strain gauge.

[0013] Specifically, the protective shell is connected with one side in the annular groove and has a gap between the other side, in order to avoid affecting the final torque measurement effect, in addition to the basic function of protecting the strain gauge, the protective shell should also avoid friction with the deformation part, and the one side can be the inner side of the first end or the inner side of the second end.

[0014] In the embodiment, two protective shells are arranged, and the purpose is to reduce assembly difficulty and improve assembly efficiency.

[0015] The quick release structure mentioned above is a quick change terminal, and the traditional connection mode needs to repeatedly tighten and loosen screws, and the threads may be worn or not in good contact after a long time. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a perspective view of the utility model.

[0017] Fig. 2 It is a perspective view of the utility model removing the protective shell.

[0018] Fig. 3 It is a sectional view of the utility model. DETAILED DESCRIPTION

[0019] As Figs. 1-3 shown, a tightening tool contains a body, the body contains a motor 1, a speed reducer mechanism 2, a main shaft 3, a deformation part 4 and a bit head 5, the bit head 5 is connected with the tail end of the main shaft 3, the output end of the motor 1 drives the main shaft 3 to rotate through the speed reducer mechanism 2, the deformation part 4 is sleeved on the main shaft 3, and a strain gauge is arranged on the deformation part 4, characterized by further containing a front cover 6 and a rear cover 7, the motor 1 is arranged in the rear cover 7, the rear cover 7 is connected with the speed reducer mechanism 2 through a quick release structure, and the front cover 6 is sleeved on the main shaft 3, wherein the deformation part 4 is exposed on the body, a first end 41 of the deformation part 4 is connected with the front cover 6 through the quick release structure, a second end 42 is connected with the speed reducer mechanism 2 through the quick release structure, the inside of the front cover 6 and the inside of the speed reducer mechanism 2 have a slot space a in communication with each other, and a wire hole 4a in communication with the inside of the front cover 6 is arranged on the second end 42 of the deformation part 4.

[0020] The utility model has the advantages of:

[0021] The utility model optimizes the structure of the whole, sets the front cover 6, can construct the slot space a for the cable to pass, can avoid the structure of the speed reducer mechanism 2 from being disassembled when disassembling, reduces the maintenance difficulty, simultaneously, the internal wiring mode makes the center distance of the whole tightening tool small, which means that the cables between the tightening tools will not interfere, and the tightening work is not affected by the disorder of the cables.

[0022] In addition, the motor 1 is connected with the front cover 6, the speed reducer is connected with the front cover 6, etc., when maintaining and protecting, the motor 1 can be disassembled section by section, and the various components can be quickly assembled together through the quick release structure, and the assembly efficiency is high.

[0023] The middle part of the deformation part 4 is the design of the annular groove 4b, considering that the deformation part 4 in the utility model is directly exposed on the body, the annular groove 4b has a strain gauge, in order to protect the strain gauge and prevent the structure of the strain gauge from being damaged, the protective shell 8 located in the annular groove 4b is further contained, and the protective shell 8 covers the strain gauge.

[0024] Specifically, in addition to the basic function of protecting the strain gauge, the protective shell 8 should also avoid friction between the protective shell 8 and the deformation part 4, so as not to affect the final torque measurement effect, therefore, the protective shell 8 is connected to one side in the annular groove 4b, and there is a gap between the other side, and the side can be the inner side of the first end 41 or the inner side of the second end 42.

[0025] In the embodiment, the protective shell 8 is provided with two, of course, the purpose is to reduce the assembly difficulty and improve the assembly efficiency.

[0026] The quick release structure mentioned above is the quick change terminal 9, and the traditional connection mode needs to repeatedly tighten and loosen the screw, and after a long time, the thread may be worn or the contact may be poor. The design of the quick change terminal 9 makes the connection and disconnection process more stable, reduces the wear of the terminal and the connecting piece, and prolongs the service life of the equipment.

[0027] The above embodiments only describe the preferred embodiments of the utility model, and do not limit the scope of the utility model, and various deformations and improvements of the technical scheme of the utility model made by ordinary engineering technical personnel without departing from the design spirit of the utility model should fall within the protection scope determined by the claims of the utility model.

Claims

1. A tightening tool comprising a body, the body including a motor, a reduction mechanism, a spindle, a deformation part, and a bit, the bit being connected to the end of the spindle, the output end of the motor driving the spindle to rotate via the reduction mechanism, the deformation part being sleeved on the spindle, and strain gauges being provided on the deformation part, characterized in that, Also contain the front cover and the rear cover, the motor is set in the rear cover, the rear cover and the speed reduction mechanism are connected through the quick release structure, the front cover is sleeved on the main shaft, wherein the deformation part is exposed on the body, the first end of the deformation part is connected with the front cover through the quick release structure, the second end is connected with the speed reduction mechanism through the quick release structure, the inside of the front cover and the inside of the speed reduction mechanism have a slot space in communication with each other, the second end of the deformation part is provided with a wire hole in communication with the inside of the front cover.

2. A tightening tool according to claim 1, characterized in that The middle part of the deformation part is designed as an annular groove, and a protective shell located in the annular groove is further included, and the protective shell covers the strain gauge.

3. A tightening tool according to claim 2, characterized in that The protective shell is connected with one side in the annular groove, and has a gap between the other side.

4. A tightening tool according to claim 2 or 3, characterized in that The protective shell is provided with two.

5. The tool of claim 1 wherein, The quick release structure is a quick change terminal.

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