CN209878190U - Combined flat-plate force cell - Google Patents

Abstract

The utility model provides a modular dull and stereotyped force cell sensor, include: the bearing plate is movably arranged in the groove, and the bearing plate is supported on the bridge type force measuring sensor. The utility model discloses a thickness is thinner than conventional plate sensor among the prior art, and specially adapted has the strict requirement and the application scenario of big plane face atress to sensor thickness, has the characteristics that the precision is high, anti off-centre is good.

Description

Combined flat-plate force cell

Technical Field

The utility model relates to a sensor technical field, in particular to modular dull and stereotyped force cell sensor.

Background

The plate type force measuring sensor in the prior art is high in thickness, poor in precision and large in eccentric force, so that the requirements for thickness installation space are strict, the precision and the eccentricity are high in application occasions, for example, when a soft package battery in the battery industry carries out point inspection on equipment in the hot pressing process, a conventional plate type sensor cannot be installed and used, and the plate type force measuring sensor with the advantages of thinner thickness, higher precision and higher deviation resistance is needed in the field.

SUMMERY OF THE UTILITY MODEL

The utility model provides a modular dull and stereotyped force cell sensor to solve above-mentioned technical problem.

In order to solve the above problem, as an aspect of the present invention, there is provided a combined flat force sensor, including: the bearing plate is movably arranged in the groove, and the bearing plate is supported on the bridge type force measuring sensor.

Preferably, the top edge of the side wall of the groove extends towards the inner side direction of the groove and forms a clamping edge, and the edge of the bearing plate is located below the clamping edge.

Preferably, the edge of the carrier plate is formed as a stepped portion, and the stepped portion is located below the clamping edge.

Preferably, the bridge-type load cell comprises a support part and a stress plate, two ends of the stress plate are respectively connected with one support part through a strain beam, a strain gauge is adhered to the strain beam, and the bearing plate is in contact with the stress plate.

Preferably, the supporting portion is provided with a fixing hole, and the bridge-type load cell is connected with the base through a fastener arranged in the fixing hole.

Preferably, the combined flat plate load cell further comprises a baffle, and two ends of the groove are respectively provided with one baffle.

Preferably, a connector is mounted on a side wall of the base on a side parallel to an extending direction of the groove, and the connector is connected to the strain gauge.

Preferably, the upper and lower surfaces of the other side of the base parallel to the extending direction of the groove are provided with inclined angle guide surfaces.

Preferably, the angle of inclination of the chamfer surface is 60 degrees.

Preferably, the baffle is connected with the end face of the base through a screw.

Since the technical scheme is used, the utility model discloses a thickness is thinner than conventional plate sensor among the prior art, and the application scenario of specially adapted big plane surface atress has the characteristics that the precision is high, anti off-centre is good.

Drawings

Fig. 1 schematically shows the overall structure of the present invention;

figure 2 schematically shows an exploded view of the invention;

FIG. 3 schematically illustrates a schematic view of a bridge load cell;

figure 4 schematically shows a schematic view of a carrier plate.

Reference numbers in the figures: 1. a base; 2. a bridge-type force sensor; 3. a carrier plate; 4. a groove; 5. edge clamping; 6. a step portion; 7. a support portion; 8. a stress plate; 9. a strain beam; 10. a fixing hole; 11. a baffle plate; 12. a connector assembly; 13. a corner guide surface.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

The utility model discloses an aspect provides a modular dull and stereotyped force cell sensor, especially an ultra-thin modular dull and stereotyped resistance strain gauge force cell sensor, mainly is applicable to battery trade laminate polymer battery and carries out the point to the equipment and examine at the hot pressing in-process, carries out the check-up to the pressure on every layer.

This combination formula dull and stereotyped load cell includes: base 1, a plurality of bridge type force cell sensor 2 and loading board 3, seted up recess 4 on the base 1, bridge type force cell sensor 2 set up fixedly in the recess 4, loading board 3 set up movably in the recess 4, just loading board 3 support in on the bridge type force cell sensor 2.

The combined type flat plate force measuring sensor is a force bearing body consisting of a base 1 and four bridge type force measuring sensors 2 fixed on the base 1, and an upper bearing plate 3 is floatingly installed on the upper surfaces of the bridge type force measuring sensors 2. When the force measuring device works, an external acting force acts on the bearing plate 3 and is evenly distributed to the four bridge type force measuring sensors 2 below, the bridge type force measuring sensors 2 are deformed after being stressed, resistance strain gauges which are adhered to the deformation together generate resistance change, and an electric signal corresponding to the force value is generated through the Joston bridge to be output. The bridge of the bridge type force measuring sensor 2 is formed by mutually combining two sensors at two sides into a Wheatstone bridge, and then connecting the two bridges in parallel to form a path of output.

Since the technical scheme is used, the utility model discloses a thickness is thinner than conventional plate sensor among the prior art, and specially adapted has strict demand and the application scenario of face atress to sensor thickness, has the characteristics that the precision is high, anti off-centre is good. Preferably, the top edge of the side wall of the groove 4 extends towards the inner side direction of the groove 4 and forms a clamping edge 5, and the edge of the bearing plate 3 is located below the clamping edge 5. Preferably, the edge of the carrier plate 3 is formed as a step 6, and the step 6 is located below the clamping edge 5. One of the functions of the groove 4 is that the fixed bridge type force measuring sensor 2 does not slide to two sides when being stressed and deformed, and the other function is that the bearing plate 3 is limited. The upper surface of the bearing plate 3 is a stress surface, the lower surface of the bearing plate is in close contact with the stress surfaces of the four bridge type force measuring sensors 2, and after the step parts 6 and the grooves 4 are clamped mutually, the bearing plate 3 is pushed into the grooves 4 with force.

In a preferred embodiment, preferably, the bridge load cell 2 comprises a support portion 7 and a force-bearing plate 8, two ends of the force-bearing plate 8 are respectively connected with one support portion 7 through one strain beam 9, a strain gauge is adhered to the strain beam 9, and the bearing plate 3 is in contact with the force-bearing plate 8. The strain beam 9 forms a strain area of the sensor, and the strain beam 9 is adhered to the maximum deformation areas on two sides of the strain area to sense the maximum deformation.

In order to improve the measurement accuracy, preferably, a fixing hole 10 is formed in the support portion 7, and the bridge-type load cell 2 is connected to the base 1 through a fastener arranged in the fixing hole 10. Thus, in addition to limiting the sliding of the bridge load cell 2 by the groove 4 on the base, the support 7 is fixed on the base by three countersunk screw holes (i.e., fixing holes 10) on both sides, so that the sensor becomes a bridge sensor with both ends fixed.

Preferably, the combined flat load cell further comprises a baffle 11, and two ends of the groove 4 are respectively provided with one baffle 11 to prevent the bearing plate 3 from sliding.

Preferably, a connector 12 is mounted on a side wall of the base 1 parallel to the extending direction of the groove 4, and the connector 12 is connected to the strain gauge. The connector 1 is used for supplying power to the sensor and externally connecting the output.

Preferably, the upper and lower surfaces of the other side of the base 1 parallel to the extending direction of the groove 4 are provided with inclined corner guide surfaces 13. Preferably, the angle of inclination of the chamfer surface 13 is 60 degrees. Like this, be convenient for when the test, will easily the utility model discloses in pushing into the test space.

Preferably, the baffle 11 is connected with the end surface of the base 1 by screws.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A modular flat plate load cell, comprising: base (1), a plurality of bridge type force cell sensor (2) and loading board (3), set up fluted (4) on base (1), bridge type force cell sensor (2) set up with fixed in recess (4), loading board (3) set up with moving in recess (4), just loading board (3) support in on bridge type force cell sensor (2).

2. The combined flat plate load cell according to claim 1, wherein the top edges of the side walls of the recess (4) extend in the direction of the inside of the recess (4) and form a bead (5), the edge of the carrier plate (3) being located below the bead (5).

3. The combined flat load cell according to claim 2, wherein the edge of the carrier plate (3) is formed as a step (6), said step (6) being located below the clamping edge (5).

4. The combined flat load cell according to claim 2, wherein said bridge load cell (2) comprises a support portion (7) and a load plate (8), wherein both ends of said load plate (8) are connected to one of said support portion (7) by a strain beam (9), wherein a strain gauge is adhered to said strain beam (9), and wherein said load plate (3) is in contact with said load plate (8).

5. The combined flat plate load cell according to claim 4, wherein the support portion (7) is provided with a fixing hole (10), and the bridge-type load cell (2) is connected to the base (1) through a fastener arranged in the fixing hole (10).

6. The combined flat plate load cell according to claim 1, further comprising a baffle (11), one baffle (11) being mounted at each end of the recess (4).

7. The combined flat load cell according to claim 4, wherein a connector (12) is mounted on a side wall of the base (1) on a side parallel to the extending direction of the recess (4), the connector (12) being connected to the strain gauge.

8. Combined flat plate load cell according to claim 7, characterized in that the upper and lower surfaces of the other side of the base (1) parallel to the extension of the groove (4) each have an inclined lead angle surface (13).

9. The combined flat plate load cell according to claim 8, wherein the angle of inclination of the chamfer face (13) is 60 degrees.

10. The combined flat plate load cell according to claim 6, wherein the baffle (11) is connected to the end face of the base (1) by means of screws.