DE102013009358A1 - Construction for adjusting the torque on the screwdriver - Google Patents

Abstract

The present invention provides a construction for adjusting the torque on the screwdriver, which primarily consists of an inner tube (1), a spring plate (20), a set screw (22), a front fine adjustment rod (3), a spring (35), an upper one Tooth block (40), a lower tooth block (41), a stop element (5), at least one toothed washer (6), a compression element (7), a screw cap for the torque (8) and a transmission element (9), the construction for adjusting the torque is arranged within the handle of the screwdriver, the torque during assembly being calibrated by means of the regulation of the front fine-adjustment rod (3), the regulation of the compression element (7) being ensured by means of the regulation and adjustment of the torque, whereby the user only sets the auxiliary tool into the polygonal groove (80) of the screw cap for the torque (8) corners and then have to turn the screw cap for the torque (8) so that the desired graduation and number (81) of the screw cap for the torque (8) are aligned with the corresponding position of the indicator mark on the handle, thus completing the setting of the torque , the torque strength of the screwdriver during the rotation can be adjusted in a simple manner by means of the graduation and the numbers (81) of the screw closure for the torque (8), loosening of internal components due to vibrations during operation of the screwdriver by means of the design of the toothed disc ( 6) and the spring plate (20) can be avoided.

Description

Technical area

The present invention relates to a construction for adjusting the torque of the screwdriver, in particular a construction for adjusting the torque, which is arranged inside the handle of the screwdriver and is responsible for the calibration and fine adjustment, so that the torque strength of the screwdriver by means of turning the screw cap for the torque can be adjusted at the handle end.

State of the art

The handles and the screwdriver rods of the general screwdriver for tightening and loosening of screws are usually fastened together and thus form a unit. Because of the unknown magnitudes of the maximum torques of the screws, the rotational force is often used in an arbitrary manner during use. If excessive torque is applied, breakage of the screw teeth or damage to the screw heads and further difficulties in tightening and loosening the screws. Therefore, an adjustable torque screwdriver, more specifically, Taiwan, No. M306166 "Fixed Torque Screwdriver", which primarily includes a handle, a torque element, a guide device, a stopper member, and a cover, has been provided Torque element comprises an elastomer and a sliding block, wherein the elastomer is accommodated in the receiving space of the handle, wherein a guide track of the guide groove opposite the handle on a peripheral side of the sliding block is arranged, so that the sliding block is aligned with the receiving space of the handle and in slide and impact on the elastomer, wherein the guide device includes a guide member and a drive rod, wherein the drive rod opposite to the force guide member is arranged and forms a unit together with it, wherein one end of the drive rod has a drive end, wherein the Ant serially penetrating the bore of the sliding block, the torque element and the bushing of the handle, wherein a displacement surface is disposed on the guide member corresponding to the guide surface of the sliding block with a positioning member disposed on the end surface opposite to the drive rod and the guide member, whereby the torque value of the screwdriver can be adjusted by the rotation of the cover. Although the fixed torque screwdriver normally has a torque adjustment function for the screwdriver, the torque value limit values can not be displayed when adjusting the torque value of the screwdriver, so that the user is unable to know the torque setting value , In addition, the speed on the cover must be reset each time. Therefore, the operation proves to be very complicated. The fixed torque screwdriver has a torque adjustment function only at one end of the cover, therefore, the screwdriver torque can not be finely adjusted or calibrated during adjustment, producing vibrations in the screwdriver during operation such that the internal components are vibrated be loosened, the torque value is changed and the precision is lost.

Object of the invention

The main objective of the screw torque control design of the present invention is that the shortcomings of conventional screwdrivers can be effectively improved during assembly and use so that torque adjustment during assembly can be easily controlled and calibrated. In use, the torque of the screwdriver can be easily adjusted. In addition, loosening of the internal components resulting from vibration during operation can be avoided, thus ensuring high accuracy in torque values of the screwdrivers.

The construction for adjusting the torque on the screwdriver according to the present invention includes:
an inner tube, wherein in one end of the inner tube, an inner threaded bore and in the other end a chamber are arranged, wherein female threaded portions are arranged on the wall surface of the chamber, wherein a polygonal through hole between the chamber and the inner threaded bore of the inner tube is provided, wherein a arranged with the chamber receiving groove on the wall surface of the inner tube, wherein a likewise connected to the chamber sliding channel is arranged for limiting on the wall surface of the inner tube;
a spring plate, which is arranged in the receiving groove of the inner tube, wherein one end of the spring plate has a bend and thus a latching plate is formed, wherein the other end of the spring plate has a bore, wherein a fastening bolt passes through the bore of the spring plate, wherein an adjusting screw in the sliding groove is arranged to limit the inner tube;
a front fine control rod, which is arranged at the front end of the inner tube, wherein an externally threaded portion serving for screwing to the inner threaded bore of the inner tube is disposed on the outer wall of the front fine control rod, wherein a receiving groove is disposed inside the front fine control rod, and a polygonal through hole connected to the receiving groove is disposed on the end surface of the front fine control rod ;
a spring disposed inside the polygonal through-hole of the inner tube and inside the receiving groove of the front fine-adjusting rod, one end of the spring abutting the inner wall surface of the receiving groove of the front fine-adjusting rod;
an upper tooth block disposed inside the chamber of the inner tube and inside the polygonal through hole and abutting the other end of the spring, the upper tooth block having a polygonal body in correspondence with the polygonal through hole of the inner tube, the upper tooth block having a bore wherein a plurality of upper latching teeth are disposed on a side surface of the upper block of teeth;
a lower block of teeth which is disposed inside the chamber of the inner tube and engages in the upper block of teeth in an interlocking manner, wherein two sides of the lower block of teeth are each provided with a first projecting body and with a second projecting body, wherein the first projecting body the Bore of the upper block of teeth, wherein the lower block of teeth has a polygonal opening, wherein a plurality of lower latching teeth, which are responsible for the mutual engagement with the upper latching teeth of the upper block of teeth, disposed on the support surface of the lower block of teeth in correspondence with the upper block of teeth;
a stopper member disposed inside the chamber of the inner tube, a side surface thereof abutting against a side surface of the lower teeth block, the stopper member having a step-shaped opening, a threaded hole for positioning, which is for screwing with the inserted through the spring plate fixing screw is provided, and a threaded bore for limiting, which is provided for screwing with the adjusting screw, are arranged on the wall surface of the stop element, wherein the spring plate is screwed by means of the fastening screw fixed to the stop element;
at least one toothed disc, which is arranged in the interior of the chamber of the inner tube, wherein a side surface of the toothed disc abuts against the other side surface of the stop element, wherein a plurality of latching teeth are arranged on the outer wall surface of the toothed disc in an annular manner, wherein the latching teeth for the latching of the latching plate Spring plate are responsible, wherein the toothed disc is provided with a polygonal opening and two pin holes for positioning, with two bolts insert respectively in the two pin holes for positioning;
a compression element disposed inside the female threaded portion of the chamber of the inner tube, the compression element being provided with a polygonal opening and two pin bores for positioning, the two pins passing through the pin bores for positioning the toothed disc also respectively in the two pin bores insert for positioning the compression element, wherein a male threaded portion, which is provided for screwing with the female threaded portion of the inner tube, is disposed on the outer wall surface of the compression element;
a torque screw cap disposed at the rear end of the inner tube, wherein the torque screw cap is made of an insulating material, wherein a graduation and numbers are disposed on the outer end surface of the torque screw cap, with a polygonal receiving groove the inner end surface of the screw cap is arranged for the torque;
a transmission member disposed inside the polygonal receiving groove of the torque screw cap, the transmission member being provided with a polygonal rod, the polygonal rod fitting into the polygonal openings of the compression member and the toothed pulley.

In the construction for adjusting the torque of the screwdriver according to the present invention, the construction for adjusting the torque is disposed inside the screwdriver handle.

In the torque adjusting apparatus of the screwdriver according to the present invention, a fine adjustment fixing hole connected to the inner threaded hole is provided on the wall surface of the inner pipe, so that the front fine control rod can be fixed to the front end of the inner pipe.

In the construction for adjusting the torque of the screwdriver according to the present invention, an outer end of the inner tube is provided with a flange, wherein an insertion hole is provided on the flange, wherein a positioning element has an arc, with which a plug-in body is designed for positioning, wherein the male body is inserted for positioning in the insertion hole of the flange of the inner tube, so that in the Inner tube arranged compression element is struck by means of the insertion body for the positioning of the positioning element to prevent falling out of the compression element from the inner tube.

In the construction for adjusting the torque of the screwdriver according to the present invention, a first sealing washer and a second sealing disc are arranged inside the front fine control rod, wherein a plurality of projecting bodies are respectively arranged on the opposite walls of the first sealing disc and the second sealing disc, wherein the projecting Body of the first sealing disc abut the wall surface of the second sealing disc, wherein the projecting body of the second sealing disc abut against the wall surface of the first sealing disc, whereby the effect against vibration and preventing the loosening of the front fine control rod by the arrangement of the first sealing disc and the second sealing disc can be guaranteed.

In the screwdriver setting torque construction according to the present invention, the upper teeth of the upper teeth block and the lower teeth of the lower teeth block likewise have a vertical surface on one side surface and a bevelled surface on the other side surface Surface of the upper latching teeth and the lower latching teeth abut each other, so that the upper block of teeth and the lower block of teeth are driven in unidirectional rotation manner.

In the construction for adjusting the torque of the screwdriver according to the present invention, a plurality of insertion openings for positioning on the outer end face of the screw cap are provided for the torque, wherein a transparent cover disc is disposed on the outer end face of the screw cap for the torque, wherein the transparent cover disc with a polygonal groove corresponding to the polygonal groove of the screw cap for the torque is provided, wherein a plurality of projecting positioning body, which are responsible for the latching in the insertion openings for positioning the screw cap for the torque, are arranged on the inner surface of the transparent cover disc, so that wear of the graduated marks and numbers marked on the screw cap for the torque can be avoided by arranging the transparent cover disc.

In the torque adjusting apparatus of the screwdriver according to the present invention, a plurality of elastic feet are disposed on the outer wall surface of the torque screw cap, the ends of the elastic legs being provided with male bodies, with a skirt comprising the elastic feet of the torque screw cap and is latched and thus secured by the male bodies of the resilient feet, a plurality of annular protruding portions being disposed on the outer wall surface of the skirt ring, whereby the annular protruding portions of the skirt ring can be engaged with the screwdriver handle, so that the present invention is stable can be fixed in the handle.

In the construction for adjusting the torque of the screwdriver according to the present invention, a protruding positioning body is disposed inside the polygonal receiving groove of the screw cap for the torque, wherein the transmission element has a same polygonal body as that of the polygonal receiving channel of the screw cap for the torque, wherein a polygonal groove, which is responsible for receiving the protruding positioning of the screw cap for the torque is provided on an end face of the transmission element, so that the transmission element can be connected to the screw cap for the torque in a stable manner.

Brief description of the illustrations

1 shows an exploded perspective view of the embodiment according to the present invention;

2 shows an exploded perspective view of the embodiment according to the present invention from a different angle;

3 shows a perspective view of the embodiment according to the present invention;

4 shows a sectional view of the embodiment according to the present invention;

5 Fig. 12 is a schematic of the displacement in adjusting the torque of the embodiment according to the present invention;

6 shows a schematic of the structure within the screwdriver handle of the embodiment according to the present invention;

7 shows a side view of the screw cap for the torque and the handle of the embodiment according to the present invention;

8th shows an application scheme of the torque control of the screwdriver by means of an auxiliary tool of the embodiment according to the present invention.

Detailed description of the embodiments

In order to fully understand the present invention, the preferred embodiments are described in detail below with reference to the figures:

In the 1 and 2 shown embodiment of the present invention includes:
an inner tube 1 , wherein one side of the outer wall of the inner tube 1 a cylinder 10 and the other side a polygon body 11 having, wherein the polygonal body 11 can be hexagonal, with an internal threaded hole 12 inside the cylinder 10 of the inner tube 1 is arranged, with a mounting hole for the fine adjustment 13 on the wall surface of the cylinder 10 is arranged, wherein the mounting hole for the fine adjustment 13 with the inner threaded hole 12 is connected so that a passage is formed between the two, with a chamber 14 inside the polygon body 11 is arranged, wherein an internally threaded portion 140 on the wall surface of the chamber 14 is arranged, wherein a polygonal through hole 15 between the chamber 14 of the inner tube 1 and the internal tapping 12 is arranged, wherein the polygonal through hole 15 may be hexagonal, with a receiving groove 16 on the wall surface of the polygon body 11 of the inner tube 1 is arranged, further comprising a Gleitrinne for limiting 17 on the wall surface of the polygon body 11 is arranged, wherein both the receiving groove 16 as well as the sliding channel to limit 17 with the chamber 14 are connected and thus creates a passage between all, the outer end of the polygon body 11 with a flange 18 is provided with an insertion hole 180 on the flange 18 is provided;
a spring plate 20 , wherein the spring plate 20 in the receiving groove 16 of the inner tube 1 is arranged, with one end of the spring plate 20 a 90 degree bent latch plate 200 having the other end of the spring plate 20 a hole 201 having a fastening screw 21 the hole 201 durchsteckt, with a set screw 22 in the trough to limit 17 of the inner tube 1 is arranged, wherein a positioning element 23 in the insertion hole 180 of the inner tube 1 is provided, wherein the positioning element 23 having an arc, which in this a male body for positioning 230 is trained;
a front fine adjustment bar 3 at the front end of the inner tube 1 is arranged, wherein a male threaded portion 30 on the outer wall surface of the front fine control rod 3 is arranged, wherein a receiving groove 31 inside the front fine adjustment bar 3 is arranged, one with the receiving groove 31 connected polygonal through hole 32 on the end face of the front fine control rod 3 is provided, wherein a first sealing disc 33 and a second sealing washer 34 inside the front fine adjustment bar 3 are arranged, with several protruding body 330 . 340 each on the opposite walls of the first sealing disc 33 and the second sealing washer 34 are arranged, wherein the projecting body 330 the first sealing washer 33 on the wall surface of the second sealing disc 34 abut, wherein the projecting body 340 the second sealing washer 34 to the wall surface of the first sealing disc 33 abut, wherein a spring 35 inside the polygonal through-hole 15 of the inner tube 1 and inside the receiving groove 31 the front fine adjustment bar 3 is arranged;
an upper block of teeth 40 inside the chamber 14 of the inner tube 1 and inside the polygonal through-hole 15 is arranged, the upper block of teeth 40 in accordance with the polygonal through hole 15 of the inner tube 1 a polygonal body, wherein the upper block of teeth 40 a hole 400 having multiple upper engagement teeth 401 on a side surface of the upper block of teeth 40 are arranged, with a side surface of the upper latching teeth 401 a vertical surface and the other side surface has a tapered surface;
a lower block of teeth 41 inside the chamber 14 of the inner tube 1 is arranged and with the upper block of teeth 40 engages in an interlocking manner, with two sides of the lower block of teeth 41 each with a first protruding body 410 and with a second protruding body 411 are provided, the lower block of teeth 41 a polygonal opening 412 having several lower engagement teeth 413 on the bearing surface of the lower block of teeth 41 in correspondence with the upper block of teeth 40 are arranged, wherein a side surface of the lower latching teeth 413 a vertical surface and the other side surface has a tapered surface;
a stop element 5 inside the chamber 14 of the inner tube 1 is arranged, with a side surface of this on a side surface of the lower tooth block 41 is applied, wherein the stop element 5 a stepped opening 50 having a threaded hole for positioning 51 and a threaded hole to limit 52 on the wall surface of the stop element 5 are arranged;
at least one toothed disc 6 inside the chamber 14 of the inner tube 1 is arranged, with several latching teeth 60 on the outer wall surface of the toothed disc 6 are arranged in an annular manner, wherein the latching teeth 60 for the latching of the latching plate 200 the spring plate 20 are responsible, with the toothed disc 6 with a polygonal opening 61 and two pin holes for positioning 62 are provided, with two bolts 63 each in the two pin holes for positioning 62 plug in;
a compression element 7 inside the internal thread section 140 the chamber 14 of the inner tube 1 is arranged, wherein the compression element 7 with a polygonal opening 70 is provided, wherein a male threaded portion 71 on the outer wall surface of the compression element 7 is arranged, with two pin holes for positioning 72 in the compression element 7 are arranged;
a screw cap for the torque 8th , at the rear end of the inner tube 1 is arranged, wherein the screw cap for the torque 8th made of an insulating material, being a polygonal channel 80 on the outer end surface of the screw cap for the torque 8th is provided, wherein the polygonal channel 80 can be square, with a graduation and numbers 81 on the outer end surface of the screw cap for the torque 8th are arranged, with multiple insertion for positioning 82 on the outer end surface of the screw cap for the torque 8th are provided, with several elastic feet 83 on the outer wall surface of the screw cap for the torque 8th are arranged, with the ends of the elastic feet 83 with plug-in bodies 830 are provided, wherein a polygonal receiving channel 84 on the inner end surface of the screw cap for the torque 8th is arranged, wherein a projecting positioning body 85 inside the polygonal receiving channel 84 is arranged, with an edging ring 86 the elastic feet 83 the screw cap for the torque 8th includes, wherein a plurality of annular protruding parts 860 on the outer wall surface of the edging ring 86 are arranged, with a transparent cover disc 87 on the outer end surface of the screw cap for the torque 8th is arranged, wherein the transparent cover disc 87 with a polygonal channel 870 in correspondence with the polygonal channel 80 the screw cap for the torque 8th is provided, wherein a plurality of projecting positioning body 871 on the inner surface of the transparent cover disc 87 are arranged;
a transmission element 9 Inside the polygonal receiving channel 84 the screw cap for the torque 8th is arranged, wherein the transmission element 9 has a same polygonal body as those in the polygonal groove 84 the screw cap for the torque 8th , being a polygonal channel 90 on an end surface of the transmission element 9 is provided, wherein a polygonal rod 91 on the other end surface of the transmission element 9 is arranged. The components described above together provide a design for adjusting the torque on the screwdriver.

When assembling, see 1 to 4 , be the first gasket first 33 and the second sealing washer 34 together in the receiving groove 31 the front fine adjustment bar 3 housed and then the male threaded section 30 the front fine adjustment bar 3 into the inner threaded hole 12 of the inner tube 1 screwed in, with the spring 35 in the polygonal through hole 15 of the inner tube 1 and in the receiving groove 31 the front fine adjustment bar 3 is housed, with the upper block of teeth 40 then in the chamber 14 of the inner tube 1 is housed, taking part of the upper block of teeth 40 in the polygonal through hole 15 is housed, with one end of the spring 35 on the side wall surface of the second sealing disc 34 abuts and the other end of the spring 35 on a side surface of the upper block of teeth 40 rests, wherein the lower block of teeth 41 then in the chamber 14 of the inner tube 1 is housed, wherein the first projecting body 410 of the lower block of teeth 41 in the hole 400 of the upper block of teeth 40 is inserted, with the lower latching teeth 413 of the lower block of teeth 41 and the upper engagement teeth 401 of the upper block of teeth 40 engage in an interlocking manner, wherein the stop element 5 then in the chamber 14 of the inner tube 1 is housed, wherein the stop element 5 with the side surface of the lower block of teeth 41 contacted, with the second projecting body 411 of the lower block of teeth 41 in the stepped opening 50 the stop element 5 is inserted, with the set screw 22 then the Gleitrinne to limit 17 of the inner tube 1 durchsteckt, where the set screw 22 then with the threaded hole to limit 52 the stop element 5 is screwed, wherein the stop element 5 in the chamber 14 of the inner tube 1 is limited, with the toothed disc 6 on a side surface of the compression element 7 is placed and then two bolts in the pin holes for positioning 62 the toothed disc 6 and in the pin holes for positioning 72 of the compression element 7 be plugged in, with the compression element 7 with the toothed disc 6 combined and then the toothed disc 6 and the compression element 7 in the chamber 14 the inner tube are housed, wherein the male threaded portion 71 of the compression element 7 with the female thread section 140 of the inner tube 1 is screwed, with a side surface of the toothed disc 6 on the lateral wall surface of the stop element 5 is applied, wherein then the male body for positioning 230 of the positioning element 23 in the insertion hole 180 of the inner tube 1 is inserted, so that the male body for the positioning 230 to the lateral wall surface of the compression element 7 strikes to the falling out of the compression element 7 from the inner tube 1 to prevent, with the spring washer 20 in the receiving groove 16 of the inner tube 1 is housed, with the fastening screw 21 through the hole 201 the spring plate 20 pushed through and then with the threaded hole for positioning 51 the stop element 5 is bolted so that the spring plate 20 on the stop element 5 attached and in the receiving groove 16 of the inner tube 1 is housed, with the latch plate 200 the spring plate 20 in a latching tooth 60 the toothed disc 6 elastically engages, wherein the edging ring 86 the outer parts of the elastic feet 83 the screw cap for the torque 8th includes, wherein the transparent cover disc 87 on the outer end surface of the screw cap for the torque 8th is arranged so that the projecting positioning body 871 the transparent cover disc 87 in the insertion openings for positioning 82 the screw cap for the torque 8th insert, with the transparent cover disc 87 on the outer end surface of the screw cap for the torque 8th is attached and then the transmission element 9 in the polygonal receiving channel 84 the screw cap for the torque 8th is housed, so that the projecting positioning body 85 the polygonal receiving trough 84 the screw cap for the torque 8th in the polygonal groove 90 of the transmission element 9 is housed, wherein the transmission element 9 in the screw cap for the torque 8th is firmly positioned, with the screw cap for the torque 8th and the transmission element 9 then together on the rear end surface of the inner tube 1 be arranged so that the polygonal rod 91 of the transmission element 9 the polygonal opening 70 of the compression element 7 , the polygonal opening 61 the toothed disc 6 and the stepped opening 50 the stop element 5 by infected. The steps described above represent the assembly of the design for adjusting the torque on the screwdriver (as in 3 and 4 shown).

Prior to assembly, where the torque-adjusting design on the screwdriver according to the present invention is housed in the handle of the screwdriver, it is necessary to make the adjustment for the accuracy of the various torque values. Please refer 3 to 5 The auxiliary tool A becomes the polygonal channel 80 the screw cap for the torque 8th inserted at the outer end surface, with the screw cap for the torque 8th is rotated by the rotation of the auxiliary tool A. When the screw cap for the torque 8th is rotated, the transmission element 9 rotated in a frictional manner, wherein the transmission element 9 the compression element 7 rotates in a frictional manner, the compression element 7 by means of the screw connection of the external thread section 71 with the female thread section 140 of the inner tube 1 either inside the inner tube 1 screwed in or turned out of this out. If the set torque value is rather large, the compression element rotates 7 inside and rotates in a frictional manner the toothed disc 6 , where the toothed disc 6 at the same time moving the stop element 5 prevented inside. When the toothed disc 6 turns, the latch plate jumps 200 the spring plate 20 in a latching tooth 60 the toothed disc 6 , which is elastic in the Einrastzahn 60 engages and is thereby fixed, wherein the stop element 5 to the lower block of teeth 41 strikes, making it close to a lateral wall surface of the upper block of teeth 40 rests with the upper block of teeth 40 from the spring 35 is held elastically so that the lower engaging teeth 413 of the lower block of teeth 41 and the upper engagement teeth 401 of the upper block of teeth 40 Engage in a closely interlocking manner, so that rather large torque values come to pass (as in 5 shown). If the set torque values are rather small, the compression element will move 7 to the outside, the stopper element 5 , the lower block of teeth 41 and the upper block of teeth 40 from the spring 35 pushed elastically and also moved outwards, with the latching between the lower block of teeth 41 and the upper block of teeth 40 is less tight, so rather small torque values come to existence (as in 4 shown). The size of the set torque values is determined by the displacement distance of the stop element 5 limited, wherein the displacement distance of the stop element 5 from the distance of the adjusting screw 22 in the trough to limit 17 of the inner tube 1 is limited, so that the set torque values can be controlled. Moreover, the auxiliary tool A can enter the polygonal through hole 32 the front fine adjustment bar 3 plugged in and then turned this to the inner tube 1 arranged spring 35 to push, reducing the elastic pressure force of the spring 35 can be adjusted and calibrated. Once the front fine control bar 3 Calibrated to the set value, then the attachment hole for the fine adjustment 13 of the inner tube 1 sealed, with the front fine control rod 3 by the arrangement of the first sealing disc 33 and the second sealing washer 34 stable in the inner tube 1 is attached so that the risk of detachment does not exist. If higher torque values are to be set, then rather large values of the torque screw cap must be used 8th be aligned with the indication mark B1 of the handle B. If rather small torque values are to be adjusted, rather small values of the screw cap for the torque must 8th be aligned with the indication mark B1 of the handle B. The construction for adjusting the torque on the screwdriver according to the present invention can thus be incorporated in the handle B of the screwdriver. In the present invention, the edging ring 86 by means of the annular protruding parts 860 be meshed with the handle B, which can be fixed in the handle B in a stable manner.

In use (see 3 to 8th ), the torque-adjusting construction is housed in the handle B (as in FIG 6 and 7 shown). The handle B can be used for different screwdriver rod bodies B2 (with slot shapes, cross shapes, polygonal shapes, pentalobe shapes, etc.). When various torques for the screwdriver rod bodies are to be adjusted, only the auxiliary tool A needs to be placed in the transparent cover disc arranged on the rear end surface of the handle B. 87 and in the polygonal channels 870 . 80 the screw cap for the torque 8th be plugged in (as in 8th shown). The screw cap for the torque 8th is rotated by means of the auxiliary tool A until the appropriate graduation and number 81 the torque value of the screw cap for the torque 8th is aligned with the indication mark B1 of the handle B, thus completing the adjustment of the torque of the screwdriver rod body B2, that of the screwdriver by means of the graduation and the numbers 81 the screw cap for the torque 8th can be adjusted in a simple manner, with a transparent cover disc 87 on the outer side surface of the screw cap for the torque 8th is arranged, bringing wear and illegibility of the screw on the torque 8th marked graduation and the numbers 81 can be avoided. When using a (conventional) screwdriver vibration due to the mutual elastic engagement of the upper block of teeth 40 and the lower block of teeth 41 The design for adjusting the torque within the handle B is also affected by those vibrations, causing it to loosen, which adversely affects the torque value of the screwdriver. By use of the present invention, loosening of the screwdriver, which normally occurs due to vibrations of the internal components, is achieved by the positioning of the latch plate 200 the spring plate 20 on a latch tooth 60 the toothed disc 6 avoided. In addition, the anti-vibration effect and the avoidance of loosening of the front fine control rod 3 by means of the arrangement of the first sealing disc 33 and the second sealing washer 34 inside the front fine adjustment bar 3 be achieved in order to reduce the weakening of the torque, so that when using the screwdriver, the precision is ensured with respect to the torque values.

It should be understood that the above description of the embodiments is exemplary only and that various modifications may be made by those skilled in the art. The above specifications, examples and data provide a complete description of the construction and use of the embodiments of the invention. While various embodiments of the invention have been described above with a degree of accuracy or with reference to one or more individual embodiments, many changes may be made to the disclosed embodiments by one skilled in the art without departing from the spirit or scope of this invention.

LIST OF REFERENCE NUMBERS

1

inner tube

10

cylinder

11

polygon body

12

inner threaded hole

13

Mounting hole for fine adjustment

14

chamber

140

Internally threaded portion

15

Polygon through hole

16

receiving groove

17

Gutter to limit

18

flange

180

insertion

20

spring plate

200

detent

201

drilling

21

fixing screw

22

screw

23

positioner

230

Insertion body for positioning

3

front fine adjustment bar

30

Externally threaded section

31

receiving groove

32

polygonal through hole

33

first sealing washer

330

protruding body

34

second sealing washer

340

projecting body

35

feather

40

upper block of teeth

400

drilling

401

upper latch tooth

41

lower block of teeth

410

first protruding body

411

second projecting body

412

polygonal opening

413

lower latch tooth

5

stop element

50

stepped opening

51

Threaded hole for positioning

52

Tapping to limit

6

toothed washer

60

engagement tooth

61

polygonal opening

62

Pin hole for positioning

63

bolt

7

compression element

70

polygonal opening

71

Externally threaded section

72

Pin hole for positioning

8th

Screw cap for the torque

80

polygonal channel

81

Graduation and numbers

82

Insertion opening for positioning

83

elastic foot

830

male body

84

polygonal receptacle

85

projecting positioning body

86

Mount ring

860

annular protruding part

87

transparent cover disc

870

polygonal channel

871

projecting positioning body

9

transmission element

90

polygonal channel

91

polygonal rod

A

auxiliary tool

B

Handle

B1

displayed ad

B2

Screwdriver rod body

Claims (9)

Construction for adjusting the torque on the screwdriver includes: an inner tube ( 1 ), wherein an internal threaded hole ( 12 ) in the interior of one end of the inner tube ( 1 ), one chamber ( 14 ) inside the other end of the inner tube ( 1 ), wherein an internally threaded portion ( 140 ) on the wall surface of the chamber ( 14 ) is arranged, wherein a polygonal through hole ( 15 ) between the chamber ( 14 ) of the inner tube ( 1 ) and the inner threaded hole ( 12 ), one with the chamber ( 14 ) connected receiving groove ( 16 ) on the wall surface of the inner tube ( 1 ), wherein a sliding channel for limiting ( 17 ) on the wall surface of the inner tube ( 1 ) is arranged; a spring plate ( 20 ) inside the receiving groove ( 16 ) of the inner tube ( 1 ) is arranged, wherein one end of the spring plate ( 20 ) a curved latching plate ( 200 ), wherein the other end of the spring plate ( 20 ) a hole ( 201 ), wherein a fastening screw ( 21 ) the bore ( 201 ) of the spring plate ( 20 ), whereby a set screw ( 22 ) in the sliding channel for limiting ( 17 ) of the inner tube ( 1 ) is arranged; a front fine control rod ( 3 ), which at the front end of the inner tube ( 1 ) is arranged, wherein a male threaded portion ( 30 ), which screw the union with the inner threaded hole ( 12 ) of the inner tube ( 1 ), on the outer wall surface of the front fine control rod ( 3 ), wherein a receiving groove ( 31 ) inside the front fine control rod ( 3 ), wherein one with the receiving groove ( 31 ) connected polygonal through hole ( 32 ) on the end face of the front fine control rod ( 3 ) is arranged; a feather ( 35 ) inside the polygonal through-hole ( 15 ) of the inner tube ( 1 ) and inside the receiving groove ( 31 ) of the front fine control rod ( 3 ), one end of the spring ( 35 ) on the inner wall surface of the receiving groove ( 31 ) of the front fine control rod ( 3 ) is present; an upper block of teeth ( 40 ) inside the chamber ( 14 ) of the inner tube ( 1 ) and inside the polygonal through-hole ( 15 ) and at the other end of the spring ( 35 ), wherein the upper block of teeth ( 40 ) in correspondence with the polygonal through-hole ( 15 ) of the inner tube ( 1 ) has a polygonal body, wherein the upper block of teeth ( 40 ) a hole ( 400 ), wherein a plurality of upper latching teeth ( 401 ) on a side surface of the upper block of teeth ( 40 ) are arranged; a lower block of teeth ( 41 ) inside the chamber ( 14 ) of the inner tube ( 1 ) and with the upper block of teeth ( 40 ) in an interlocking manner, wherein two sides of the lower block of teeth ( 41 ) each with a first projecting body ( 410 ) and with a second projecting body ( 411 ), the first protruding body ( 410 ) the bore ( 400 ) of the upper block of teeth ( 40 ), whereby the lower block of teeth ( 41 ) a polygonal opening ( 412 ), wherein a plurality of lower engagement teeth ( 413 ), which are suitable for latching into the upper latching teeth ( 401 ) of the upper block of teeth ( 40 ), on the bearing surface of the lower block of teeth ( 41 ) in correspondence with the upper block of teeth ( 40 ) are arranged; a stop element ( 5 ) inside the chamber ( 14 ) of the inner tube ( 1 ), wherein a side surface thereof on a side surface of the lower block of teeth ( 41 ) is applied, wherein the stop element ( 5 ) a stepped opening ( 50 ), wherein a threaded hole for positioning ( 51 ), which for the screw connection with the through the spring plate ( 20 ) pushed through fastening screw ( 21 ) and a threaded hole for limiting ( 52 ), which are suitable for screwing with the adjusting screw ( 22 ) is provided on the wall surface of the stop element ( 5 ) are arranged; at least one toothed disc ( 6 ) inside the chamber ( 14 ) of the inner tube ( 1 ) is arranged, wherein a side surface of the toothed disc ( 6 ) on the other side surface of the stop element ( 5 ), wherein a plurality of engagement teeth ( 60 ) on the outer wall surface of the toothed disc ( 6 ) are arranged in an annular manner, wherein the engagement teeth ( 60 ) for the latching of the latching plate ( 200 ) of the spring plate ( 20 ), wherein the toothed disc ( 6 ) with a polygonal opening ( 61 ) and two pin holes for positioning ( 62 ), two bolts ( 63 ) in the two pin holes for positioning ( 62 ) plug in; a compression element ( 7 ), which inside the internal thread section ( 140 ) the chamber ( 14 ) of the inner tube ( 1 ), wherein the compression element ( 7 ) with a polygonal opening ( 70 ) and two pin holes for positioning ( 72 ), the two bolts ( 63 ), which are the pin holes for positioning ( 62 ) of the toothed disc ( 6 ), also in each case in the two pin holes for positioning ( 72 ) of the compression element ( 7 ), wherein an external thread section ( 71 ), which for screwing with the female thread section ( 140 ) of the inner tube ( 1 ) is provided on the outer wall surface of the compression element ( 7 ) is arranged; a screw cap for the torque ( 8th ), which at the rear end of the inner tube ( 1 ), wherein the screw cap for the torque ( 8th ) is made of an insulating material, wherein a polygonal channel ( 80 ) on the outer end face of the torque screw cap ( 8th ), wherein a graduation and numbers ( 81 ) on the outer end face of the torque screw cap ( 8th ), wherein a polygonal receiving channel ( 84 ) on the inner end surface of the screw cap for the torque ( 8th ) is arranged; a transmission element ( 9 ) inside the polygonal receiving channel ( 84 ) of the screw cap for the torque ( 8th ), wherein the transmission element ( 9 ) with a polygonal rod ( 91 ), the polygonal rod ( 91 ) in the polygonal openings ( 61 . 70 ) of the compression element ( 7 ) and the toothed disc ( 6 ). A torque adjusting device on a screwdriver according to claim 1, characterized in that the construction for adjusting the torque is disposed inside the handle of the screwdriver. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that one with the inner threaded bore ( 12 ) connected mounting hole for the fine adjustment ( 13 ) on the wall surface of the inner tube ( 1 ) is arranged. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that an outer end of the inner tube ( 1 ) with a flange ( 18 ), wherein an insertion hole ( 180 ) on the flange ( 18 ) is provided, wherein a positioning element ( 23 ) has an arc, whereby in this a plug-in body for the positioning ( 230 ), wherein the insertion body for the positioning ( 230 ) in the insertion hole ( 180 ) of the flange ( 18 ) of the inner tube ( 1 ) is inserted. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that a first sealing disc ( 33 ) and a second sealing disc ( 34 ) inside the front fine control rod ( 3 ) are arranged, wherein a plurality of projecting body ( 330 . 340 ) each on the opposite walls of the first sealing disc ( 33 ) and the second sealing disc ( 34 ) are arranged. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that the upper engagement teeth ( 401 ) of the upper block of teeth ( 40 ) and the lower engagement teeth ( 410 ) of the lower block of teeth ( 41 ) have in the same way on one side surface a vertical surface and on the other side surface a beveled surface, wherein the beveled surfaces of the upper engagement teeth ( 401 ) and the lower engagement teeth ( 410 ) abut each other. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that a plurality of insertion openings for positioning ( 82 ) on the outer end face of the torque screw cap ( 8th ) are provided, wherein a transparent cover disc ( 87 ) on the outer end face of the torque screw cap ( 8th ), wherein the transparent cover disc ( 87 ) with a polygonal channel ( 870 ) corresponding to the polygonal groove ( 80 ) of the screw cap for the torque ( 8th ), wherein a plurality of projecting positioning body ( 85 ), which are suitable for latching with the insertion openings for positioning ( 82 ) of the screw cap for the torque ( 8th ), on the inner surface of the transparent lid ( 87 ) are arranged. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that a plurality of elastic feet ( 83 ) on the outer wall surface of the torque screw cap ( 8th ) are arranged, wherein the ends of the elastic feet ( 83 ) with male bodies ( 830 ), wherein a collar ring ( 86 ) the elastic feet ( 83 ) of the screw cap for the torque ( 8th ) and by the Plug-in body ( 830 ) of the elastic feet ( 83 ) and thus fastened, wherein a plurality of annular protruding parts ( 860 ) on the outer wall surface of the edging ring ( 86 ) are arranged. Construction for adjusting the torque of the screwdriver according to claim 1, characterized in that a projecting positioning body ( 85 ) inside the polygonal receiving channel ( 84 ) of the screw cap for the torque ( 8th ), wherein the transmission element ( 9 ) has the same polygonal body as that of the polygonal receiving channel ( 84 ) of the screw cap for the torque ( 8th ), whereby a polygonal channel ( 90 ) suitable for receiving the projecting positioning body ( 85 ) of the screw cap for the torque ( 8th ) is responsible, on an end face of the transmission element ( 9 ) is provided.

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