TWI692390B - Torque display device of mechanical gas-electric screwdriver - Google Patents

Abstract

The invention provides a mechanical gas-electric screwdriver torque display device, which is arranged on the head of the gas-electric screwdriver and includes two types of open type and protective type, wherein the open type is suitable for factories that need to quickly adjust the torque; the protection The formula is suitable for long-term use of fixed torque, and can prevent the on-site operator from adjusting the torque value without authorization. In particular, it can easily read the current setting value of the gas electric screwdriver, and conforms to the ISO management regulations, and can perform regular calibration functions; in particular, the torque value can be adjusted arbitrarily according to the demand, and the current setting or adjusted torque value can be displayed in real time. To achieve the effect of eliminating the calibration time of the torque testing machine.

Description

Torque display device of mechanical gas-electric screwdriver

The invention relates to a mechanism design of a pneumatic electric screwdriver, in particular to a mechanical pneumatic electric screwdriver torque display device.

When you press and lock the screws, the corresponding torque value is based on the screws of different sizes, which is called torque or torque T (Torque). For commonly used small size screws, T generally refers to the torque of the lock, the unit is Kgf-cm. The torque value of M3 screws with general materials is 6.0Kgf-cm, while the torque value of M3 screws for special steels can be Up to 14.4Kgf-cm; different materials, different friction coefficients, different diameters, different torque values will be set. Therefore, when you want to use a screwdriver to tighten a screw, the first task is to establish the torque value.

At present, except for the extremely high-priced digital electronic digital display torque driver, there is no cheap simple mechanical torque value display reference scale table on the market, except for the rough value of 1-10. The torque value currently set by the operator cannot be displayed, and it must be corrected using a torque tester (Torque meter), which is both troublesome and time-consuming; secondly, the operator cannot lock the torque value of the tool used immediately, which may cause locking Various inconveniences in the implementation of the operation; in addition, the price of the torque tester (Torque meter) is extremely expensive, and it is a non-essential product for the general users and even products produced in developing countries.

The main purpose of the present invention is to provide a mechanical pneumatic screwdriver torque display Display device, which can easily read the current torque setting value of the pneumatic screwdriver, and comply with the ISO management regulations, and can periodically perform calibration functions.

Another purpose of this creation is to provide a mechanical pneumatic electric screwdriver torque display device, which can arbitrarily adjust the torque value according to demand, and instantly display the torque value currently set or adjusted, so as to save the correction time of the torque test machine. effect.

In order to achieve the above-mentioned objectives, the present invention provides at least one mechanical gas-electric screwdriver torque display device, including two types of open type and protective type, wherein the open type is suitable for factories that need to quickly adjust the torque; the protective type is suitable for long-term needs Use fixed torque, and can prevent on-site workers from adjusting torque value without authorization.

The open-type torque display mechanism is set on the head of the pneumatic screwdriver, and its composition includes: a reference line ring, which is screwed on the circumferential surface of the torsion cylinder for axial displacement to form tightening or loosening A reference line is formed on one side of the reference line ring; and a torque adjustment ring is axially coupled to the reference line ring, and a toroidal concave surface is formed on the circumferential surface of the torque adjustment ring, In addition, there are a plurality of ring-shaped dislocated and hollowed inner windows in place on the concave surface of the ring, and the torque value numbers carved on any side of the plurality of inner windows; thereby making the reference line ring coincide with the When the torque adjustment ring is inside, the reference line is displayed through one of the plurality of inner windows and corresponds to the torque value number.

The protective torque display mechanism is set on the head of the pneumatic screwdriver, and its composition includes: a reference line ring, which is screwed on the circumferential surface of the torsion cylinder for axial displacement to form tightening or loosening A reference line is formed on one side of the reference line ring; a torque adjustment ring is axially coupled to the reference line ring, and a trough inner concave surface is formed on the circumferential surface of the torque adjustment ring, and On the concave surface of the ring, there are a plurality of ring-shaped dislocations and hollow inner windows, And the number of torque values engraved on any side of the plurality of inner windows; a torsion sheath, which is axially coupled to the torsion adjustment ring and can rotate freely, and is on the circumferential surface of the torsion sheath There is a hollow outer window on the top. By turning the torsion sheath, the outer window can clearly and completely see the torque value of the inner window and the reference line aligned; and a fixed ring is axially sleeved Screwed on the torsion sheath and positioned on the head of the pneumatic screwdriver; by rotating the torsion sheath, the outer window can clearly and completely see the torsion value numbers of the inner window and the reference line aligned .

The above reference line can be of any type.

The shape of the inner window can be any geometric shape.

The shape of the outer window can be any geometric shape.

Two oil seals are provided on both axial sides of the fixing ring.

The two types of display devices designed according to the present invention can achieve the following functions: 1. Fast and simple reading of the torque setting value of the pneumatic screwdriver; 2. It has the effect of correcting the torque value at any time; 3. 、You can directly know the torque value of the gas electric screwdriver used and directly perform the required locking operation, eliminating the need to purchase expensive torque tester equipment; Fourth, you can use fixed torque for a long time, and can prevent the on-site personnel from adjusting the gas electric screwdriver without authorization Torque value; Fifth, the torque value set by the gas electric screwdriver currently used by the implementation personnel can be displayed in real time, eliminating the time required for testing or adjustment using a torque testing machine.

(1): Torque display device

(11): Reference line ring

(111): baseline

(12): Torque adjustment ring

(121): concave inside the ring

(122): inner window

(123): number of torque values

(124): fixing screw

(13): Torque jacket

(131): External window

(14): Retaining ring

(141): Oil seal

(15): Shaft cap

(2): Gas electric screwdriver

(21): Torque tube

The first figure is an exploded view of the structure of the first preferred embodiment of the present invention.

The second figure is a structural combination diagram of the first preferred embodiment of the present invention.

The third figure is a structural combination diagram and a partial cross-sectional view of the first preferred embodiment of the present invention.

The fourth figure is an exploded view of the structure of the second preferred embodiment of the present invention.

The fifth diagram is a structural combination diagram of the second preferred embodiment of the present invention.

The sixth figure is a structural combination diagram and a partial cross-sectional view of a second preferred embodiment of the present invention.

Please refer to the first to sixth figures, the mechanical pneumatic screwdriver torque display device designed by the present invention, the torque display device (1) is set on the head (torque cylinder) of a general pneumatic electric screwdriver (2) Location, including open and protected. Among them, the open type is suitable for factories that need to quickly adjust torque; the protective type is suitable for long-term need to use fixed torque, and can prevent on-site operators from adjusting torque value without authorization.

Please refer to the first to third figures, which is a mechanical pneumatic screwdriver torque display device according to the first preferred embodiment of the present invention. The torque display device (1) is open; its specific implementation types include: : A reference line ring (11) is screwed on the circumferential surface of the torsion cylinder (21) of the pneumatic screwdriver (2) for axial displacement to form a tightened or relaxed state, and is on the reference line ring (11) One side forms a reference line (111) of any type (such as a concave groove, etc.); a torque adjustment ring (12) is axially coupled to the reference line ring (11), and the torque adjustment ring (12) ) A ring-shaped concave surface (121) is formed on the peripheral surface, and there are a plurality of dislocations in the geometric shape (such as strips, etc.) that are dislocated from each other in a suitable shape on the concave surface (121) of the ring and are hollow inner windows ( 122), and the torque value number (123) scratched on any side of the plurality of inner windows (122), and a fixing screw (124) is appropriately threaded on the circumferential surface of the torque adjustment ring (12); A shaft cap (15) is a torsion cylinder (21) which is axially connected to the gas electric screwdriver (2) to provide a coupling tool head; thereby making the reference line ring (11) coincide with the torsion adjustment ring (12) , The baseline (111) will pass through the multiple inner windows (12 One of 2) is presented and corresponds to the torque value number (123).

Please also refer to the fourth to sixth figures, which is a mechanical pneumatic screwdriver torque display device of the second preferred embodiment of the present invention. The torque display device (1) is a protective type; its specific implementation type is Including: a reference line ring (11), which is screwed on the circumferential surface of the torsion cylinder (21) for axial displacement to form a tightened or relaxed state, and is formed on one side of the reference line ring (11) A reference line (111) of any type (such as a ditch, etc.); a torque adjustment ring (12) is axially coupled to the reference line ring (11), and the torque adjustment ring (12) is formed on the peripheral surface A section of the concave surface (121) of the ring, and on the concave surface (121) of the ring, there are a plurality of hollow inner windows (122) which are dislocated from each other in an arbitrary geometric shape (such as a strip shape) and are carved The torque value number (123) drawn on any side of the plurality of inner windows (122), thereby making the reference line ring (11) coincide with the torque adjustment ring (12), the reference line (111) Will appear through one of the plurality of inner windows (122) and correspond to the torque value number (123); a torque sheath (13) is axially coupled to the torque adjustment ring (12) And it can rotate freely, and on the peripheral surface of the torsion sheath (13) there is an outer window (131) which is also of any geometric shape (such as an oblong shape, etc.) and is hollow, by rotating the torsion sheath (13), so that the outer window (131) can clearly and completely see the torque value number (123) aligned with the inner window (122) and the reference line (111); a fixed ring (14) is axial It is sleeved on the torsion sheath (13) and screwed and positioned on the head of the pneumatic screwdriver (2), and two oil seals (141) are provided on both axial sides of the fixing ring (14), one of which is The oil seal (141) is used to prevent the fixing ring (14) from loosening, and the other oil seal (141) is used to cover the outer diameter of the torsion sheath (13), thereby generating a little resistance without causing the torsion The sheath (13) is too loose, it can be slowly turned to adjust the outer window (1 31) Align the inner window (122) to achieve the effect of reading the torque value; a shaft cap (15) is a torsion cylinder (21) axially coupled to the pneumatic screwdriver (2) to provide a coupling tool head.

It can be known from the above-mentioned open and protected torque display device (1) that the present invention enables the gas-electric screwdriver (2) to easily read the preset torque value or the torque value currently in use; especially the protected torque display The device (1), because it has a torque jacket (13) on the outside, can prevent anyone from changing the torque value arbitrarily. It is beneficial to the factory with strict quality management and customers who have precise requirements on the torque value and meet the needs.

In addition, when the gas electric screwdriver is used for a period of time, in order to prevent the torque value from being different from the actual torque value, regular correction of the torque value is necessary and meets the current production management operation standards. Therefore, the torque display device provided by the present invention It does not affect the correction and adjustment of the torque value. For example, when the open-type torque display device (1) is calibrated, first use a tool wrench to loosen the fixing screw (124), turn the torque adjustment ring (12) to a fixed value, such as adjusting to 6.0Kgf-cm, use a torque test Test the actual torque value of the pneumatic screwdriver, and record the average value to obtain an actual torque value, then turn the torque adjustment ring (12) to align the torque value through the inner window (122) to the reference line ring (11) the reference line (111), and finally fix the fixing screw (124) so that the torque adjusting ring (12) cannot rotate, and the calibration operation is completed.

Regarding the protection type torque display device (1), during calibration, first loosen the fixing ring (14) and the torque sheath (13), use the torque tester to test the torque value of the current gas electric screwdriver and record the average value, open the torque adjustment The ring (12) simultaneously turns the reference line (111) of the adjustment reference line ring (11) to adjust the torque error value, and locks the torque adjustment ring (12) Then use the inner window (122) to read whether the torque value is correct. After confirming that it is correct, combine the torque sheath (13) and the fixing ring (14), and turn and adjust the torque before locking the fixing ring (14). The torsion sheath (13) makes the outer window (131) parallel to the inner window (122), and finally the locking ring (14) can be locked.

However, the above are only preferred and feasible embodiments of the present invention. Therefore, any equivalent structural changes that apply to the description of the present invention and the scope of patent application should be included in the patent scope of the present invention.

(1): Torque display device

(11): Reference line ring

(111): baseline

(12): Torque adjustment ring

(121): concave inside the ring

(122): inner window

(123): number of torque values

(124): fixing screw

(15): Shaft cap

(2): Gas electric screwdriver

(21): Torque tube

Claims (8)

A mechanical pneumatic electric screwdriver torque display device includes: a reference line ring, which is screwed on the circumferential surface of the torsion cylinder of the pneumatic electric screwdriver for axial displacement to form a tightened or relaxed state, and is on the reference line ring One side is formed with a datum line; and a torque adjustment ring is axially coupled to the datum line ring. A toroidal concave surface is formed on the peripheral surface of the torsion adjustment ring and fits on the inner concave surface of the ring The position distribution includes a plurality of circular inner windows that are dislocation-shaped and hollow, and the torque value numbers carved on the peripheral edges of the plurality of inner windows; thereby making the reference line ring coincide with the torque adjustment ring, the The reference line is displayed through one of the plurality of inner windows and corresponds to the torque value number. As described in item 1 of the patent application, the mechanical gas-electric screwdriver torque display device, wherein the reference line may be V-shaped. As described in item 1 of the patent application, the mechanical gas-electric screwdriver torque display device, wherein the shape of the inner window may be a polygon. A mechanical pneumatic electric screwdriver torque display device includes: a reference line ring, which is screwed on the circumferential surface of the torsion cylinder of the pneumatic electric screwdriver for axial displacement to form a tightened or relaxed state, and is on the reference line ring One side is formed with a reference line; a torque adjustment ring is axially coupled to the reference line ring, and a toroidal concave surface is formed on the circumferential surface of the torque adjustment ring and is positioned on the concave surface of the ring There are a plurality of inner windows that are circularly dislocated and hollowed out, and the torque value numbers carved on the peripheral edges of the plurality of inner windows; a torsion sheath is axially coupled to the torsion adjustment ring and It can rotate freely, and a hollow outer window is provided on the peripheral surface of the torsion sheath. By rotating the torsion sheath, the outer window can clearly and completely see the inner window and the reference line aligned Torque value figures; and A fixed ring is axially sleeved on the torsion sheath and screwed to the head of the pneumatic screwdriver; by turning the torsion sheath, the outer window can clearly and completely see the inner window and The number of torque values aligned with the reference line. As described in item 4 of the patent application, the mechanical gas-electric screwdriver torque display device, wherein the reference line may be V-shaped. As described in Item 4 of the patent application scope, a mechanical pneumatic screwdriver torque display device, wherein the shape of the inner window may be a polygon. As described in Item 4 of the patent application scope, a mechanical pneumatic screwdriver torque display device, wherein the shape of the outer window may be a polygon. As described in item 4 of the patent application scope, a mechanical gas-electric screwdriver torque display device, wherein an oil seal is provided on each axial side of the fixing ring.

Images