CN201964937U

CN201964937U - Pull type sensor

Info

Publication number: CN201964937U
Application number: CN2010206829326U
Authority: CN
Inventors: 罗吉斌
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-12-20
Filing date: 2010-12-20
Publication date: 2011-09-07
Anticipated expiration: 2020-12-20

Abstract

The utility model discloses a pull type sensor, which aims at solving the problem that a strain gauge of the existing pull type sensor is not easy to paste, and the tension measurement accuracy is influenced. The pull type sensor is in cylinder structural arrangement, an elastic body in circular recessed arrangement is upwards arranged in the center of the lower surface of a cylinder, a rod-shaped lug boss is downwards arranged in the center position of the elastic body, the lower end of the lug boss is connected with a force bearing rod, and a position of the upper surface of the cylinder corresponding to the elastic body is pasted with a strain gauge. The pull type sensor has the advantages that the structure is simple, the pasting is easy because the strain gauge is directly pasted on the upper surface of the cylinder of the sensor, in addition, the pasting effect is smooth, the accurate reflection of the strain gauge on the deformation of the elastic body is ensured, and the accuracy of the pull type sensor on the tension measurement is enhanced.

Description

Pull-type sensor

Technical field

The utility model relates to a kind of sensor, particularly a kind of miniature pull-type plectane sensor.

Background technology

Along with development of science and technology, various scientific and technological achievements penetrate into the various aspects in the life gradually.For example, present people go to the food market to buy vegetables, and often carry an electronic scales, make things convenient for the weighing to the vegetables weight of being purchased, and what play an important role in the electronic scales is pull-type sensor, and whether electronic scales accurately depends primarily on the susceptibility of pull-type sensor to the article of weighing.

As shown in Figure 1, existing pull-type sensor, mainly be the cylindrical structure setting, in cylindrical upper face center to having circular depression, this depressed part is elastic body 3, the lower surface of elastic body 3 and load bar 5 are fixing, the lower end of load bar 5 links to each other with the article for the treatment of weighing, the upper surface of elastic body 3 is pasted with strainometer 2, the weight for the treatment of the weighing article is carried on the elastic body 3 by load bar 5, and elastic body 3 produces deformation, and strainometer 2 is converted into electric signal to the control circuit board transmission with the deformation of elastic body 3, control circuit board is converted into electric signal gravity numerical value after treatment, is presented on the display screen.

Therefore, the setting of the shape of elastic body 3, structure, position, whether accurate to the weight measurement of this electronic scales, have important effect.

Existing pull-type sensor owing to need strainometer is sticked in the elastic body of depression, is pasted inconvenience, makes the stickup out-of-flatness of strainometer easily, and influence has influenced the accuracy of article measured values to the accurate induction of elastomeric deformation size.

The utility model content

The purpose of this utility model is to disclose a kind of pull-type sensor, is difficult for pasting with the strainometer that solves existing pull-type sensor, influences the problem of the accuracy of tension measurement.

Pull-type sensor described in the utility model, be the cylindrical structure setting, on cylindrical lower surface mediad, be provided with the elastic body that rounded depression is provided with, at elastomeric middle position to having shaft-like boss, the lower end of boss links to each other with the load bar, and the position relative with elastic body at cylindrical upper surface is pasted with strainometer.

Wherein, the fixed orifice that is used for suspended item that about can also being provided with on the load bar, connects.

Pull-type sensor of the present utility model, simple in structure, because strainometer is the cylindrical upper surface that directly sticks on sensor, paste easily, and paste more smoothly, guaranteed the accurate response of strainometer, strengthened the accuracy of pull-type sensor tension measurement to elastic body deformation.

Description of drawings

Fig. 1 is the sectional structure chart of existing pull-type sensor;

Fig. 2 is the vertical view of the pull-type sensor of the utility model;

Fig. 3 is that the A-A of Fig. 2 is to cut-open view;

Fig. 4 is first perspective view of the pull-type sensor of the utility model;

Fig. 5 is second perspective view of the pull-type sensor of the utility model.

Mark the following drawings mark thereon in conjunction with the accompanying drawings:

The 1-lead-in wire, 2-strainometer, 3-elastic body, 4-boss, 5-load bar, 6-fixed orifice.

Embodiment

Below in conjunction with accompanying drawing, an embodiment of the present utility model is described in detail, but is to be understood that protection domain of the present utility model is not subjected to the restriction of embodiment.

As Fig. 2-shown in Figure 5, the pull-type sensor of the utility model is mainly the undersized structural design of circular plate type, is arranged in the electronic scales, is used to treat the weighing of weighing article.

Contrast pull-type sensor of the prior art (as Fig. 1), pull-type sensor of the present utility model is cylindric setting, cylindrical lower surface mediad is provided with circular depression, this depression is elastic body 3, central authorities at elastic body 3 are provided with downward rod shaped structure, it is boss 4, the lower end of boss 4 links to each other with load bar 5, offer the fixed orifice 6 of left and right directions on the load bar 5, be used to hang the article for the treatment of weighing, be pasted with strainometer 2 in the upper surface of pull-type sensor and elastic body 3 relative positions.

The weight for the treatment of the article of weighing is suspended on the load bar 5 by fixed orifice 6, load bar 5 is given elastic body 3 by boss 4 with weight transmitting, make elastic body 3 produce deformation, strainometer 2 is converted into electric signal with the deformation of

elastic body

3,1 pass to control circuit board by going between, control circuit board is converted into electric signal gravity numerical value after treatment, is presented on the display screen.

More than disclosed only be a specific embodiment of the present utility model, still, the utility model is not limited thereto, any those skilled in the art can think variation all should fall into protection domain of the present utility model.

Claims

1. pull-type sensor, be the cylindrical structure setting, it is characterized in that, on described cylindrical lower surface mediad, be provided with the elastic body that rounded depression is provided with, at described elastomeric middle position to having shaft-like boss, the lower end of boss links to each other with the load bar, and the position relative with described elastic body at described cylindrical upper surface is pasted with strainometer.

2. pull-type sensor according to claim 1 is characterized in that, the fixed orifice that is used for suspended item that connects about also being provided with on the described load bar.