CN2810898Y

CN2810898Y - Hand tool with measuring unit

Info

Publication number: CN2810898Y
Application number: CN 200520026090
Authority: CN
Inventors: 谢智庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-06-08
Filing date: 2005-06-08
Publication date: 2006-08-30
Anticipated expiration: 2015-06-08

Abstract

The utility model relates to a hand tool with a measuring unit, which comprises a main body of the hand tool, wherein the main body of the hand tool is provided with a hold part, and a wrench part which is formed by that at least one end of the hold part is forwards and backwards extended out, wherein the wrench part is a wrench head with a wrench and rotary screwing and fixing element, and the hold part is provided with an integrated assembly. A groove is arranged between the hold part and the wrench head. The front and the back ends of the groove are provided with lack parts, and the inner side wall of the groove is provided with at least one strain gauge which is electrically connected with the integrated assembly. Under the arrangement of the lack parts, the integrated assembly can be used for sensitively and accurately measuring the value of torque force by means of the change of the resistance value of the strain gauge. The utility model can be used for accurately measuring the value of the torque force.

Description

Hand-held tool with measurement mechanism

Technical field

The utility model relates to a kind of hand-operated tools, relates in particular to a kind of hand-held tool with measurement mechanism that can measure torque value accurately.

Background technology

The current common people take action on one's own to arrange and contain the DIY general mood day of family, it is quite mature and stable to add domestic hand-held tool development, no matter wherein be product category or architecture quality, more win domestic and international consistent affirming, hand-held tool production industry is over the years in order to make the easier in use left-hand seat of general consumption masses, so the hand-held tool of various easy operating or subsidiary hommization function is also asked the city successively.

Existing hand-held tool is not provided with the torsion measurement mechanism, though or be provided with the torsion measurement mechanism, but can not have enough sensitivity, and can't measure this hand-held tool carries out the application of force to screw tightening torsion and elasticity accurately, therefore whether the elasticity of learning this application of force place that the user also can't be definite is moderate, cause damage easily for application of force place like this, especially accurate instrument or assembly be this hand-held tool ground of force to no avail especially then.

Supervise in this, in the streets there is manufacturer to propose a kind of hand tool that increases strain gauge sensitivity, see also Taiwan and announce " can test the torque value ratchet wrench device " patent No. 475500, it mainly is to utilize circular groove is set on hand-held tool, make this groove become stress raiser, and strain gauge is arranged in the groove, to increase the deformation quantity of strain gauge, so that can measure torque value more accurately by integrated package.Yet, though this patent is provided with strain gauge in the groove of hand-held tool, but the stress of this groove is the sidewall that concentrates on groove, but this groove is a circular arc, and be unfavorable for the strain gauge setting, so this patent is that strain gauge is arranged on the diameter of circular arc, therefore this patent stress that can not effectively utilize groove to cause concentrates on the effect of strain gauge, and the effect that a circular groove can generate is limited, though therefore existing design has the effect that strengthens this strain gauge sensitivity, it can't be brought into play fully.

" Tool for measuring torque; such as an electronic dynamometer wrench " patent that sees also the U.S. again No. 5503028, though having to cut a hole, this patent establishes a cavity on hand-held tool, but it is the outside that strain gauge is arranged at hand-held tool, and this kind is arranged at the stress localization effects that the mode of strain gauge also can't effectively utilize this cavity to cause, and strain gauge is arranged at the outside is easier causes damage, and lose original effect, therefore, this existing hand-held tool measurement mechanism design also has many needs to improve part.

The utility model content

Technical problem underlying to be solved in the utility model is, overcomes the defective that existing hand-held tool with measurement mechanism exists, and a kind of hand-held tool with measurement mechanism is provided, and it can measure torque value accurately.

The technical scheme that its technical problem that solves the utility model adopts is:

A kind of hand-held tool with measurement mechanism, comprise tool body on the other hand, this hand-held tool body has a grip part, and this grip part is forward, the extended pulling part of at least one end in back, this pulling part is the pulling head with switching screw tightening, and be to be provided with integrated package on this grip part, it is characterized in that: be to be provided with groove between described grip part and pulling head, this groove front and back end then is provided with the portion of lacking, and the groove madial wall is that at least one strain gauge is set, this strain gauge and integrated package are electrically connect, by being provided with of this scarce portion make integrated package more sensitive and accurate measure torque value by the resistance change of strain gauge.

Aforesaid hand-held tool with measurement mechanism is provided with four strain gauges in its further groove, and this integrated package is to cooperate strain gauge to record torque value more accurately with the full-bridge type configuration.

Aforesaid hand-held tool with measurement mechanism is to be provided with a plate body in its further groove, and this strain rule is arranged on the plate body to increase the strain gauge deformation quantity.

Aforesaid hand-held tool with measurement mechanism, the scarce portion of its further groove is arranged at left and right side.

Aforesaid hand-held tool with measurement mechanism, its further groove is to be geometry.

Aforesaid hand-held tool with measurement mechanism wherein is to be provided with display screen and to adjust button on the integrated package.

The utility model is to utilize between the grip part of Wrench body and pulling part groove is set, and before groove, the rear end forms the portion of lacking, design by this scarce portion makes this groove more can become stress raiser, the strain gauge that order is arranged in the groove more easily produces deformation, and the resistance value that is changed during strain gauge deformation, then calculate its suffered torque value by an integrated package, and with this torque value demonstration confession user reference, detect torque value because of what the setting that should lack portion made that integrated package can be sensitiveer by strain gauge, in order to avoid the user is because of actual torque value and the torque value surveyed error to some extent, and unnecessary damage or fault when causing the application of force, therefore the utility model is a kind of invention that quite has practicality and progressive in fact, and worth industrial circle is promoted.

The utility model can be measured torque value accurately.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a stereoscopic schematic diagram of the present utility model.

Fig. 2 is an outward appearance vertical view of the present utility model.

Fig. 3 is a user mode schematic diagram of the present utility model.

Fig. 4 is the outward appearance vertical view of the utility model second embodiment.

Fig. 5 is the utility model the 3rd embodiment outward appearance vertical view.

Fig. 6 is the outward appearance vertical view of the utility model the 4th embodiment.

The number in the figure explanation:

1---hand-held tool body 10---grip part

11---grooves 12---lack portion

13---strain gauge 14---integrated package

15---display screens 16---are adjusted button

17---plate body 20---pulling part

21---pulling head 3---screw tightening

The specific embodiment

The utility model relates to a kind of hand-held tool with measurement mechanism, see also Fig. 1 to shown in Figure 3, comprise tool body 1 on the other hand, this hand-held tool body 1 has a grip part 10, this grip part 10 rear end is forward extended a pulling part 20 respectively, and this pulling part 20 has the pulling head 21 in order to switching screw tightening 3.

This grip part 10 is provided with a groove 11 near pulling part 20 places cutter, this groove 11 is to be geometry, the front and back end of groove 11 then is respectively equipped with one and lacks portion 12, and the situation that stress is concentrated by this scarce portion 12 is more obvious, in the groove 11 then at the sidewall strain gauge 13 of fitting; An integrated package 14 is set on grip part 10 and is electrically connect in addition with strain gauge 13, this integrated package 14 is provided with a display screen 15 and adjusts button 16, therefore as user during with the pulling head 21 switching screw tightenings 3 of pulling part 20, this is arranged at strain gauge 13 in the groove 11 because of the design of groove 11 and scarce portion 12, and bear more stress, therefore have preferable deformation quantity and sensitivity.When strain gauge 13 stressed and when producing deformation, the resistance value of this strain gauge 13 will generate variation, and integrated package 14 can detect the torque value size that this hand-held tool body 1 pulling part 20 is born by the resistance change of strain gauge 13, and the display screen 15 that is shown in integrated package 14 is for user's references, and be provided with in addition on this integrated package 14 that to adjust knob be in order to the unit's of doing adjustment or make zero, setting such as correction.

The utility model in use as shown in Figure 3, with the pulling head 21 of hand-held tool body 1 front end pulling part 20 be sheathed on screw tightening 3 on, hand grip part 10 and this screw tightening 3 of application of force switching, and when pulling this screw tightening 3, hand-held tool body 1 is the switching strength that can bear user's hand; This hand-held tool body 1 10 is provided with groove 11 in the grip part, therefore groove 11 these places are stress raisers, add these groove 11 rear and front ends and be respectively equipped with a scarce portion 12, so the structure at these groove 11 places more easily is twisted, be attached at that strain gauge 13 in the groove 11 is then easier to produce deformation because of being subjected to stress, so the deformation quantity of this strain gauge 13 is comparatively remarkable.This integrated package 14 is that detection computations goes out torsion by the resistance change of strain gauge 13, thereby can significantly promote the sensitivity that torsion is measured, in order to avoid the strength when having misled user's application of force because of inaccurate torque value causes adverse consequences such as damage.

See also shown in Figure 4, it is hand-held tool second embodiment that the utlity model has measurement mechanism, wherein primary clustering is identical with first embodiment, do not repeat them here, followingly only it is described with regard to different structure, for making the hand-held tool that the utlity model has measurement mechanism have more accuracy, also can on these grip part 10 grooves, 11 inboard walls, strain gauge 13 be set, make integrated package 14 and use full-bridge type configuration and calculate torque value the most accurately by this four strain gauge 13, adapting to the demand of different use occasions, and promote the market competitiveness.

See also shown in Figure 5ly, it is hand-held tool the 3rd embodiment that the utlity model has measurement mechanism, and wherein primary clustering is identical with first embodiment, does not repeat them here, and followingly only with regard to different structure it is described.For making the hand-held tool that the utlity model has measurement mechanism more accurate, also can in this groove 11, set firmly a plate body 17, this plate body 17 is to make with metal material and have ductility slightly, can also plastic cement material makes and has elasticity, and strain gauge 13 is arranged at this plate body 1

On 7, make this strain gauge 13 when hand-held tool body 1 is stressed with these plate body 17 distortion, to promote the sensitivity that torque value is measured.

See also shown in Figure 6ly, it is hand-held tool the 4th embodiment that the utlity model has measurement mechanism, and wherein primary clustering is identical with first embodiment, does not repeat them here, and followingly only with regard to different structure it is described.The scarce portion 12 of this groove 11 also can be arranged at the left and right sides, and reaches the effect that increases sensitivity.

The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

In sum, the utility model is on structural design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant novel patent requirement is so mention application in accordance with the law.

Claims

1, a kind of hand-held tool with measurement mechanism, comprise tool body on the other hand, this hand-held tool body has a grip part, and this grip part is to extend pulling part to forward and backward at least one end, this pulling part is the pulling head with switching screw tightening, and this grip part is provided with integrated package; It is characterized in that:

Be to be provided with groove between described grip part and pulling head, this groove front and back end then is provided with the portion of lacking, and the groove madial wall is that at least one strain gauge is set, this strain gauge and integrated package are electrically connect, by being provided with of this scarce portion make integrated package more sensitive and accurate measure torque value by the resistance change of strain gauge.

2, the hand-held tool with measurement mechanism according to claim 1 is characterized in that four strain gauges are set in the described groove, and this integrated package is to cooperate strain gauge with the full-bridge type configuration.

3, the hand-held tool with measurement mechanism according to claim 1 it is characterized in that in the described groove it being to be provided with a plate body, and this strain rule is arranged on the plate body.

4, the hand-held tool with measurement mechanism according to claim 1 is characterized in that the scarce portion of described groove is arranged at left and right side.

5, according to claim 1,2,3 or 4 described hand-held tools, it is characterized in that described groove is to be geometry with measurement mechanism.

6,, it is characterized in that on the described integrated package it being to be provided with display screen and to adjust button according to claim 1,2,3 or 4 described hand-held tools with measurement mechanism.