TWI683731B - Mechanical gas/electric screwdriver torque display device - Google Patents

Abstract

The invention provides a mechanical gas/electric screwdriver torque display device, which is set on the head of the gas/electric screwdriver, and is an open/protective type and can be switched freely. The open type is suitable for quick torque adjustment The factory is suitable for long-term need to use fixed torque, and can prevent the on-site operator from adjusting the torque value without authorization; especially the type of torque display device can easily read the current setting value of the gas/electric screwdriver, It also conforms to the ISO management regulations and can be regularly calibrated; in particular, the torque value can be adjusted arbitrarily according to needs, and the torque value currently set or adjusted can be displayed in real time to achieve the effect of eliminating the calibration time of the torque tester.

Description

Mechanical gas/electric screwdriver torque display device

The invention relates to a mechanism design of an externally adjusted torque type gas/electric screwdriver, in particular to a mechanical gas/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.

Currently available gas/electric tools, except for the extremely expensive digital electronic digital display torque driver, there is no cheap simple mechanical torque value display reference scale table, only a rough size value of 1-10 , The torque value currently set by the operator cannot be displayed, and must be corrected using a torque tester (Torque meter), which is troublesome and time-consuming; secondly, the operator cannot know the torque value of the tool used immediately, which will cause lock Attached to the inconveniences in the implementation of the operation; in addition, the price of the 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 gas/electric screwdriver torque The display device can easily read the current torque setting value of the gas/electric screwdriver, and conforms to the ISO management regulations, and can periodically perform calibration functions.

Another object of the present invention is to provide a mechanical gas/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 by the torque tester Of efficacy.

In order to achieve the above-mentioned objectives, the present invention provides a mechanical gas/electric screwdriver torque display device, which is both an open type and a protective type, wherein the open type torque display device is suitable for factories that need to quickly adjust the torque, the protective type The torque display device is suitable for the long-term need to use fixed torque, and can prevent the on-site operator from adjusting the torque value without permission, and the two can be freely switched.

The torque display device is set on the head of the gas/electric screwdriver, and its composition includes: a digital swivel ring with scale numbers on the peripheral surface; a torque adjustment ring, which is composed of large and small different diameters The stepped sleeve can provide the digital swivel sleeve on the small diameter peripheral surface for axial displacement and set the expected torque value; an upper outer nut is screwed to one end of the torque adjustment ring to prevent the The digital swivel is detached; and a sheath can be axially combined to cover the entire torque adjustment ring and can be freely rotated, and a hollow outer window is provided on the peripheral surface, and the outer window is corresponded by turning the sheath And clearly and completely see that the scale number on the circumference of the scale ring sticker on the digital swivel ring represents the torque value. The scale number falls in the inner window and is aligned with the coincident torque scale indicator line to achieve the required torque value for adjustment.

The small-diameter end edge of the torque adjusting ring is provided with a screw thread, a hollow inner window is provided on the peripheral surface, a positioning hole is provided on the peripheral surface of the large-diameter end edge, and a positioning screw is repeatedly penetrated.

The class surface of the torque adjusting ring is provided with a set of opposite slots, and springs and positioning pins are provided in the slots, and a plurality of rings are provided on the end surface of the digital rotating ring opposite to the class surface The groove, the positioning pin can selectively extend into any groove to form a snap.

The above-mentioned sheath is made of soft rubber, and can be transparent or opaque, and can be further made of different materials and equipped with different colors.

The shape of the inner window can be any geometric shape, such as a circle or a polygon.

The shape of the above-mentioned outer window can be any geometric shape, such as a circle or a polygon.

The various types of torque display devices designed according to the present invention, the expected pre-effects achieved include: 1. The torque setting value of the gas/electric screwdriver can be quickly and easily read; 2. The torque value can be corrected at any time. Three, can directly know the torque value of the gas/electric screwdriver used and directly perform the required locking operation, avoiding the purchase of expensive torque testing machine equipment; Fourth, can use fixed torque for a long time, and can prevent the on-site implementation personnel from adjusting Torque value of gas/electric screwdriver; 5. It can instantly display the torque value of the gas/electric screwdriver currently used by the implementation personnel, eliminating the time for testing or adjustment using a torque tester.

(1)‧‧‧ Torque display device

(11)‧‧‧Digital Ring

(111)‧‧‧Inner scale ring

(112)‧‧‧Scale ring sticker

(113)‧‧‧External scale ring

(114) ‧‧‧ scale numbers

(115)‧‧‧groove

(12)‧‧‧Torque adjustment ring

(121)‧‧‧Thread

(122)‧‧‧Inner window

(123)‧‧‧Locating hole

(124)‧‧‧Set screw

(125)‧‧‧Slot

(126)‧‧‧Spring

(127)‧‧‧positioning pin

(13)‧‧‧Outer nut

(14)‧‧‧Sheath

(141)‧‧‧External window

(2)‧‧‧Gas/electric screwdriver

(21)‧‧‧Torque tube

(211)‧‧‧Torque scale indicating line

The first figure is an exploded schematic view of a torque display device according to a preferred embodiment of the present invention.

The second figure is an exploded schematic view of a torque display device according to another preferred embodiment of the present invention.

The third figure is a combination diagram of a torque display device according to a preferred embodiment of the present invention.

The fourth figure is a partial cross-sectional view of a combination of a torque display device according to a preferred embodiment of the present invention.

The fifth figure is an A-A sectional view of a preferred embodiment of the present invention.

Please refer to the first and second figures, the mechanical gas/electric screwdriver torque display device designed by the present invention, the torque display device (1) is set in a general gas/electric screwdriver (2) The position of the head (equivalent to the torsion cylinder), as shown in the first figure, is set on the pneumatic screwdriver, and the second figure is set on the electric screwdriver, and they are both open and protected. It can be used interchangeably. 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 gas/electric screwdriver torque display device according to a preferred embodiment of the present invention. The torque display device (1) may be open or protected; wherein the torque scale indicates The wire (211) is arranged on the gas/electric screwdriver (2). The specific implementation type of the torque display device (1) includes: a digital swivel (11), which is composed of an inner scale ring (111), a scale ring sticker (112) and an outer scale ring (113) , The scale ring sticker (112) is made of transparent material and marked with a scale number (114) on the circumference; a torque adjustment ring (12) is a stepped sleeve with large and small different diameters. The digital swivel (11) is sleeved on the peripheral surface of the small diameter for axial displacement, and provides the expected torque value that can be achieved, and a thread (121) is provided on the small diameter end of the torque adjustment ring, and a It is an inner window (122) of any geometric shape (such as a circle, polygon, etc.) and hollowed out. A positioning hole (123) is provided on the peripheral surface of the large-diameter end edge. The fixed effect of the torque adjustment ring (12) after adjustment; an upper outer nut (13) is screwed to the thread (121) of the small-diameter end to form a fixation to prevent the digital swivel (11) from falling off; a guard The sleeve (14) is made of soft rubber, can be axially combined to cover the entire torque adjustment ring (12) and can freely rotate, and is provided with a random geometric shape on the peripheral surface of the sheath (14) ( (Such as round, polygonal, etc.) and a hollow outer window (141); by rotating the sheath (14), the outer window (141) corresponds to and clearly and completely see the scale ring on the digital swivel (11) The scale on the circumference of the sticker (112) represents the torque value (1 14) Fall within the inner window (122) and align the indicator line (211) that coincides with the torque scale to achieve the required torque value for adjustment.

As shown in the fourth and fifth figures, the level surface of the torque adjusting ring (12) is provided with a set of opposite slots (125), and the slots (125) are provided with springs (126) and positioning pins (127) ), a plurality of grooves (115) are provided on the edge surface ring of the digital swivel (11) opposite to the class surface, and the positioning pin (127) can be selectively extended into any groove (115) to form The card reaches the limit to limit the rotation of the digital rotating ring (11).

Secondly, according to the above-mentioned torque display device, when the gas and electric screwdrivers are used for a period of time, in order to prevent the error between the torque value and the actual torque value, regular correction of the torque value is necessary and meets the current production management operation standards. Therefore, the present invention provides The torque display device also has convenient correction and adjustment of the torque value.

The present invention is an open and protective torque display device. The difference is that the protective cover (14) becomes the protective torque display device (1), otherwise, the protective cover (14) becomes Open torque display device (1). In this way, the gas/electric screwdriver (2) can easily read the preset torque value or the torque value currently in use; especially when it is implemented as a protective torque display device (1), due to external protection The set (14) can prevent anyone from changing the torque value arbitrarily, which is beneficial to the factories with strict quality management and customers who have precise requirements on the torque value and meet the needs.

According to the above, when performing calibration, first rotate the digital swivel (11) and look at the inner window (122) to turn to the torque value required by the user, that is, the scale number (114) of the required torque value will overlap on this In the inner window (122); then turn the torque adjustment ring (12), the eye continues to watch the torque value in the inner window (122) and rotate to the desired torque value After that, through the inner window (122) corresponding to the torque scale indicator line (112) of the internal gas and electric screwdriver, the rotation of the torque adjustment ring (12) is stopped and the positioning hole is locked with the locking positioning screw (124) (123), you can complete the setting of the actual torque value.

The above-mentioned sheath (14) made of soft rubber can be transparent or opaque, or it can be further made of different materials and equipped with colors, so that it can be used in the production line to make the difference in color of different torque values of the production line. management.

Summarizing the above description, it can be seen that the torque display device of the present invention has the following advantages: 1. The open-type torque display device is suitable for low-order screw tools, and the protective torque display device is suitable for high-order screw tools. 2. The two different types of torque display devices are easy to operate, easy to judge and easy to read the torque value, and can avoid misjudgment. 3. The torque display device has three kinds of protective functions, including: preventing the rotation of unrelated persons, easy to quickly adjust the torque value, and preventing the work piece and tool from being injured. 4. The rubber sheath is set in different colors, which can be used in the production line to manage the color difference of different torque values of the production line. 5. Any commercially available open and protective torque-adjustable pneumatic and electric screwdrivers are applicable.

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)‧‧‧Digital Ring

(111)‧‧‧Inner scale ring

(112)‧‧‧Scale ring sticker

(113)‧‧‧External scale ring

(114) ‧‧‧ scale numbers

(12)‧‧‧Torque adjustment ring

(121)‧‧‧Thread

(122)‧‧‧Inner window

(123)‧‧‧Locating hole

(124)‧‧‧Set screw

(125)‧‧‧Slot

(126)‧‧‧Spring

(127)‧‧‧positioning pin

(13)‧‧‧Outer nut

(14)‧‧‧Sheath

(141)‧‧‧External window

(2)‧‧‧Gas/electric screwdriver

(21)‧‧‧Torque tube

(211)‧‧‧Torque scale indicating line

Claims (6)

A mechanical gas/electric screwdriver torque display device, including: a digital swivel ring with scale numbers on the peripheral surface; a torque adjustment ring, a stepped sleeve with large and small different diameters, and a small diameter The end edge is provided with thread, and the peripheral surface is provided with a hollow inner window. The digital swivel sleeve is provided on the small-diameter peripheral surface for axial displacement, and the expected torque value is set; an upper outer nut, screwed together The small-diameter end of the torque adjustment ring prevents the digital swivel ring from falling off; and a sheath that can axially combine to cover the entire torque adjustment ring and can rotate freely, and has a hollow outer window on the peripheral surface; By turning the sheath, the outer window corresponds to and clearly sees that the scale number representing the torque value on the digital swivel falls in the inner window and aligns with the indicator line of the torque scale to achieve the required torque value for adjustment. As described in Item 1 of the patent application scope, a mechanical gas/electric screwdriver torque display device, wherein a positioning hole is provided on the peripheral surface of the large-diameter end edge of the torque adjustment ring, and a positioning screw is repeatedly provided. The mechanical gas/electric screwdriver torque display device as described in item 1 of the patent application scope, wherein the level surface of the torque adjustment ring is provided with a set of opposite slots, and the slots are provided with springs and positioning pins. The digital swivel ring is provided with a plurality of grooves on the edge surface ring of the class surface, and the positioning pin can selectively extend into any groove to form a snap. The mechanical gas/electric screwdriver torque display device as described in item 1 of the patent scope, wherein the sheath is made of soft rubber, which can be transparent or opaque, and can be further made of different materials and equipped with different colors . As described in Item 2 of the patent application, the mechanical gas/electric screwdriver torque display device, wherein the shape of the inner window can be any geometric shape, such as a circle, a polygon, etc. As described in Item 1 of the patent application, the mechanical gas/electric screwdriver torque display device, wherein the shape of the outer window can be any geometric shape, such as a circle, a polygon, etc.

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