CN201573148U

CN201573148U - Torque wrench

Info

Publication number: CN201573148U
Application number: CN2009202952441U
Authority: CN
Inventors: 徐步光
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-28
Filing date: 2009-12-28
Publication date: 2010-09-08
Anticipated expiration: 2019-12-28

Abstract

The utility model discloses a torque wrench, which comprises a torsion plate. The end wall of the torsion plate is provided with a through hole. When a working point of an ultrasonic tooth cleaner is inserted in the through hole, the working point cannot rotate relatively to the torsion plate. The outer surface of the torsion plate is sleeved with a torsion spring. The inner surface of the torsion spring and the outer surface of the torsion plate have a certain friction force. The outer surface of the torsion spring is sleeved with a shell. One end of the torsion spring is fixedly connected on the shell. The utility model easily arranges the working point on a handle of the tooth cleaner by a preset force and does not need to worry whether the screw thread can be damaged in the screwing process.

Description

A kind of torque wrench

Technical field

The utility model relates to a kind of torque wrench, relates in particular to a kind of being used for torque wrench on the work point installation ultrasonic cavitron.

Background technology

The work point of ultrasonic cavitron screws on the machine of cleaning one's teeth by screw thread, in assembling, need screw on the machine of cleaning one's teeth by instruments such as the spanner point of will working, at present, operating personnel by spanner in rotation work when point, if the power of using is too small, can cause the work point not to be assemblied on the machine of cleaning one's teeth securely, if the power that operating personnel use is excessive, then can cause the excessively rotation of work point, cause decreasing ring.So need a torque wrench come the installment work point, because the work point has a long end, commercially available torque wrench all is not suitable for the work point is installed to ultrasonic cavitron at present.

The utility model content

The utility model provides a kind of torque wrench, the work point that this torque wrench can very convenient installation ultrasonic cavitron.

In order to solve the problems of the technologies described above, the utility model is solved by following technical proposals:

A kind of torque wrench, comprise and turn round dish, this is turned round on the end wall of dish and has through hole, when the work point of ultrasonic cavitron is located in this through hole, the work point can not rotate with respect to turning round dish, and the described outer surface of turning round dish is arranged with torsion spring, and the inner surface of described torsion spring has certain frictional force with the outer surface of turning round dish, the outer surface of described torsion spring is arranged with housing, and an end of torsion spring is fixed on the housing.

In the technique scheme, the cross section of described through hole is a polygon.

In the technique scheme, at least two sides of described through hole are provided with reinforced wire.Be provided with reinforced wire, can guarantee that through hole has good shape always, prevent that the work point from trackslipping in through hole.

In the technique scheme, described turn round between dish upper surface and the housing upper surface apart from S greater than the sharp length of passing through hole and being positioned at housing of work.After the point of also promptly working passed through hole, its highest point was lower than the upper surface of housing, when the work point rotates, all was positioned at housing like this, can prevent that the work point from damaging or the work point touches operating personnel, caused operating personnel to come to harm.

Beneficial effect: the utility model compared with prior art has following beneficial effect:

The utility model is installed on the tooth cleaner handgrip by the preset force that the sets point of will working easily, whether do not worry when tightening can damaged screw misgivings.

Description of drawings

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

Fig. 2 is torsion spring, turn round the decomposition texture schematic diagram of dish and reinforced wire.

Fig. 3 is a longitudinal section of the present utility model.

Fig. 4 is a sectional elevation of the present utility model.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

Referring to Fig. 1～3, torque wrench, comprise and turn round dish 3, the described dish 3 of turning round is a cylinder substantially, this is turned round on dish 3 the end wall and has just tetragonal through hole 30, form " U " font after reinforced wire 4 bendings, and this reinforced wire 4 penetrates and " U " word lays respectively at the both sides of through hole 30 from the sidewall of turning round dish 3.

Certain described through hole 30 is not limited to square, shape for the work point that adapts to different ultrasonic cavitrons, the shape of this through hole 30 also can select to such an extent that go up with work point and these through hole 30 contacted surface configurations suitable, that is to say, when the work point stretches into this through hole 30, turn round dish 3 and can not relatively rotate with the work point.

Work to reinforced wire is used as brief description below, when turning round dish 3 rotating bands and start building to do point and rotate, produce a moment of torsion between the two, after working long hours, through hole 30 may be out of shape, cause the work point in through hole 30, to trackslip, make and turn round dish 3 and sharp mutual rotation of work, thereby can not normally use, be provided with reinforced wire 4 from the utility model, can guarantee that through hole 30 has good shape always, prevent that the work point from trackslipping in through hole 30.

The described outer surface of turning round dish 3 is arranged with torsion spring 2, and the inner surface of described torsion spring 2 has certain frictional force with the outer surface of turning round dish 3, and the outer surface of described torsion spring 2 is arranged with housing 1, and an end of torsion spring 2 is fixed on the housing 1.For the utility model, can the inner surface of torsion spring 2 and the frictional force of turning round between dish 3 the outer surface be the keys that realize, its frictional force is suitable for the sharp confidential power of bearing of ultrasonic tooth that is assembled to of will work.

Preferably, described turn round between dish 3 upper surfaces and housing 1 upper surface apart from S greater than the sharp length of passing through hole 30 and being positioned at housing 1 of work.In other words, after the work point passed through hole 30, its highest point was lower than the upper surface of housing 1, when the work point rotates, all was positioned at housing 1 like this, can prevent that the work point from damaging or the work point touches operating personnel, caused operating personnel to come to harm.

During use, the point of at first will working is located in the through hole 30, roll-shell 1 then, because when torsion spring 2 is fixed in housing 1, described torsion spring 2 and then rotates, and torsion spring 2 inner surfaces have certain frictional force with the outer surface of turning round dish 3, turning round dish 3 also and then rotates, the point of also promptly working and then rotates, after the work point tightens up with the machine of cleaning one's teeth, when being rotated further housing 1, the required power of roll-shell 1 will and be turned round frictional force (this frictional force is exactly the preset force that sets) between the outer surface of dish 3 greater than torsion spring 2 inner surfaces, like this torsion spring 2 with turn round dish 3 and move rotation mutually, in any case roll-shell 1, also can make the suffered power of work point be torsion spring 2 inner surfaces with the outer surface of turning round dish 3 between frictional force, thereby effectively avoid the work point by excessive screwing, and cause damage.

When needs unclamp being connected of work point and ultrasonic cavitron, the other way around during rotary shell 1, torsion spring 2 is reversed rotation, and its torsion spring silk can be released, and torsion spring 2 swellings this moment are being turned round between dish 3 and the housing 1, produce huge frictional force, turn round dish 3 and just can't relatively rotate, that is to say, when rotary shell 1 with torsion spring 2, turn round dish 3 and under the drive of torsion spring 2, and then rotate, thereby the point of will working unclamps.

Claims

1. torque wrench, it is characterized in that, comprise and turn round dish (3), this is turned round on the end wall of dish (3) and has through hole (30), and when the work point of ultrasonic cavitron was located in this through hole (30), the work point can not be with respect to turning round dish (3) rotation, the described outer surface of turning round dish (3) is arranged with torsion spring (2), the inner surface of described torsion spring (2) has certain frictional force with the outer surface of turning round dish (3), and the outer surface of described torsion spring (2) is arranged with housing (1), and an end of torsion spring (2) is fixed on the housing (1).

2. torque wrench as claimed in claim 1 is characterized in that, the cross section of described through hole (30) is a polygon.

3. torque wrench as claimed in claim 2 is characterized in that, (30) at least two sides of described through hole are provided with reinforced wire (4).

4. torque wrench as claimed in claim 1 or 2 is characterized in that, describedly turns round passing through hole (30) and being positioned at the length of housing (1) greater than the work point apart from S between dish (3) upper surface and housing (1) upper surface.