CN201034707Y

CN201034707Y - Weighing sensor used for ultrathin human body scale

Info

Publication number: CN201034707Y
Application number: CNU2006200159555U
Authority: CN
Inventors: 张超; 朱惠忠; 杨文俊
Original assignee: TH LEAGUER SENSORY TECHNOLOGY (SHENZHEN) Co Ltd
Current assignee: TH LEAGUER SENSORY TECHNOLOGY (SHENZHEN) Co Ltd
Priority date: 2006-11-22
Filing date: 2006-11-22
Publication date: 2008-03-12
Anticipated expiration: 2016-11-22

Abstract

The utility model discloses a weighing sensor for an ultrathin human scale, which is composed of a metal body (1), a resistance strain foil (2), a flexible sealing adhesive (3), a connecting wire (4), the weighing sensor is characterized in that the metal body is only a mould board which is punched with a spring steer plate whose thickness is less than 3.2 mm, the top of the metal body is not a bearing plate of riveting bridge type by the traditional way. A middle T-shape elastic strain beam has three structure types that two ends are made into a position groove, two ends are made into a light hole, two ends is made into a thread hole. When using, the supporting scale feet of the scale are directly installed on the strain beam of the sensor, the height dimension which the sensor produces in the height dimension chain is only equal to the thickness of the spring steer plate which is made into the sensor, meets the requirement of the whole height of the supporting scale foot of the human scale.

Description

A kind of LOAD CELLS that is used for ultra-thin weighing scale

Affiliated technical field

The utility model relates to a kind of LOAD CELLS of human body scale, in particular for the LOAD CELLS of ultra-thin human body scale.

Background technology

At present, be used for the LOAD CELLS of scale, metal master is generally the spring steel sheet material stamping parts of sheet, on its elastic strain beam, force-bearing steel plate that strikes out bridge shape of riveted again, there are spherical salient point or pit in the center of plate, is used to accept the load of scale body feet vertical direction.Like this, the metal solid of sensor height dimension in vertical direction equals base plate thickness and bridge shape steel plate height dimension sum.Gao Du sensor can not satisfy the less requirement for height of ultrathin human body scale feet like this.

Summary of the invention

The purpose of this utility model is to overcome general LOAD CELLS height dimension deficiency bigger than normal, provide a kind of and can guarantee scale pin installation capability, and the metal solid height dimension only is the LOAD CELLS of sheet metal thickness that rated load is 50Kg～75Kg.

In order to achieve the above object, the utility model is realized by following technical scheme.

A kind of load cell structure that is used for ultra-thin weighing scale that the utility model provides is made up of metal body (1), resistance strain gage (2), flexible sealing (3), connection lead (4).Metal body (1) is the template that thickness is not more than the spring steel sheet material stamping-out one-tenth of 3.2mm, uses after bakingout process and surface treatment.We are referred to as T shape part in the middle of it the elastic strain beam or are called for short strain beam, the force-bearing steel plate of its top no longer riveted bridge type.On elastic strain beam surface, resistance strain gage (2) that paste to form electric bridge be connected lead (4), with flexible sealing (3) capping resistance strain gage (2).Produced mechanically deform when the elastic strain beam is subjected to the load of vertical direction, has caused the resistance value of resistance strain gage (2) to change, resistance strain gage (2) is electric bridge and connects, and lead (4) has just had the voltage output that becomes with load variations.

The elastic strain beam of the utility model sensor metal body (1) can have three kinds of structural form selection: two ends make locating slot, two ends make unthreaded hole, two ends making threaded hole.Use the scale of this utility model LOAD CELLS, press the version of strain beam, correspondingly take to link up with, the mounting means of riveted, screw, directly be fixed on the strain beam of sensor supporting the scale pin.The strain beam that supports scale pin and sensor is the load carrying plane with the two ends part plan only, and they are built on stilts fully at the position of posting resistance strain gage.Like this, the only suitable thickness of making its spring steel sheet material of the height dimension that in structure installation dimension chain, produced of LOAD CELLS.

By each technical characterictic coupling of technique scheme sensor in groups, complete being applied on the weighing scale can be controlled the whole height that supports scale pin subassembly effectively, and the superthin structure of human body scale requires to be achieved.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is a kind of load cell structure floor map that is used for ultra-thin weighing scale of the utility model;

Fig. 2 a, Fig. 2 b, Fig. 2 c are a kind of three kinds of structural representations that are used for the LOAD CELLS metal body of ultra-thin weighing scale of the present utility model;

Fig. 3 is a kind of example structure decomposing schematic representation that is used for the LOAD CELLS of ultra-thin weighing scale of the utility model;

Fig. 4 is a kind of load cell structure schematic perspective view that is used for ultra-thin weighing scale of the utility model.

Embodiment

As Fig. 1, shown in Figure 4, the metal body 1 that the utility model is used for ultra-thin weighing scale LOAD CELLS is with the spring steel sheet material stamping-out moulding of thickness 2mm, uses the force-bearing steel plate of its top no longer riveted bridge type after bakingout process and surface treatment.The T shape strain beam slab face of metal body 1 is pasted the resistance strain gage 2 of forming electric bridge, connects input and output lead 4.With flexible sealing 3 capping resistance strain gages 2, the thickness of sealing is not more than 1mm.Its frame is the mounting plane of sensor, the structural shape of middle elastic strain beam, and the structure that present embodiment provides for Fig. 2 c, promptly two ends make threaded hole.The corresponding screw fixation method of taking is directly installed on the bearing strain beam of sensor and is supported the scale pin.

Shown in Fig. 2 a, Fig. 2 b, Fig. 2 c, the elastic strain beam of the utility model sensor metal body 1 can have three kinds of structural form selection: Fig. 2 a is depicted as two ends and makes locating slot, Fig. 2 b and be depicted as that two ends make unthreaded hole, Fig. 2 c is depicted as two ends and makes threaded hole.Use the scale of this utility model LOAD CELLS, press the version of strain beam, correspondingly take to link up with, the mounting means of riveted, screw, directly be fixed on the strain beam of sensor supporting the scale pin.

Please see Figure a kind of concrete installation embodiment shown in 3, support in the scale pin subassembly, strain beam is that Plane Installation is on the supporting plane of scale pin box upper casing 5 on sensor 6 frames of Fig. 2 c version, and the frame lower plane is held with scale pin box lower cover 10 protruding blocks.Supporting two sunk screws 8 of scale pin 7 usefulness directly is fixed on the elastic strain beam of sensor 6.Antiskid glue cushion 9 is posted in scale pin 7 bottoms, and scale pin box lower cover 10 usefulness screws 11 are fixing.Like this, the only suitable thickness of making its spring steel sheet material of the height dimension that sensor is produced in installation has been controlled the overall height dimension of feet effectively.

Certainly, the utility model can also be further used for analyzing the ultra-thin weighing scale of human body component function, and such application belongs within the rights protection scope of the present utility model.

Claims

1. LOAD CELLS that is used for ultra-thin weighing scale, rated load is 50Kg～75Kg, comprise metal master (1), resistance strain gage (2), flexible sealing (3), connect lead (4), it is characterized in that: metal master (1) is not more than the template of the spring steel sheet material stamping-out one-tenth of 3.2mm by thickness, resistance strain gage (2) that on its T shape elastic strain beam, paste to form electric bridge be connected lead (4), with flexible sealing (3) capping resistance strain gage (2).

2. the LOAD CELLS that is used for ultra-thin weighing scale according to claim 1, it is characterized in that: the T shape elastic strain beam in the middle of the sensor metal master (1) can have three kinds of bearing structure forms: two ends make that locating slot, two ends are made unthreaded hole, two ends make threaded hole, and scale is that the mounting means of using hook, riveted, screw mutually will support on the strain beam that the scale pin directly is fixed on sensor.

3. the LOAD CELLS that is used for ultra-thin weighing scale according to claim 1 and 2, it is characterized in that: strain beam is the load carrying plane with the two ends part plan only, they are built on stilts fully at the position of posting resistance strain gage (2), and the height dimension that LOAD CELLS is produced in the setting height(from bottom) dimension chain only is equivalent to a thickness of making its spring steel sheet material.