High-precision force transducer structure

Abstract

The utility model belongs to the technical field of force transducers, and particularly relates to a high-precision force transducer structure, which comprises a shell, a wire fixedly connected to one side of the shell, a cover plate arranged at the top of the shell, a mounting seat arranged inside the shell, a force transducer main body fixedly mounted at the top of the mounting seat, and a supporting mechanism arranged at the bottom of the mounting seat. And a fixing mechanism is arranged in the cover plate. According to the utility model, the fixed rod, the reset spring, the sliding block, the movable supporting rod and the damping rod are matched for use, the sliding block is slidably connected with the fixed rod, and the movable supporting rod is rotatably connected with the sliding block and the mounting seat through the rotating shaft, so that the initial pressing acting force can be unloaded in the force measurement use process; damage to equipment due to too large impact force is prevented, and long-term work and use are facilitated; and the limiting plate is arranged at the top of the pressing rod for limiting, so that the pressing acting force can be prevented from being too large and exceeding a force measurement limit value to damage the pressing rod, and the practicability can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to force sensor technical field, concretely is a high accuracy force sensor structure. BACKGROUND

[0002] Force sensors (or force sensors, force sensor modules) are widely used in industrial, laboratory, automotive, aerospace, medical equipment and other fields, mainly for measuring the force, pressure, weight and other physical quantities of objects. Its high precision requirement usually means that the sensor can measure small force changes, and has very high sensitivity, stability and linear response. The force sensor is composed of one or more elastic bodies that can produce deformation under force, a bridge circuit (such as a Wheatstone bridge) that can sense the deformation of the resistance strain gauge, and a three-part adhesive and protective sealant that can fix and paste the resistance strain gauge on the elastic body and conduct the strain. The force sensor is composed of three parts. With the innovation and progress of technology, traditional force sensors are gradually replaced by smaller micro force sensors.

[0003] The prior art has the following disadvantages: the prior art has the following disadvantages: a high-precision micro force sensor with the application number CN202221186042.5, including shell, ring, bottom plate, pressure rod and gland. The outer part of the shell is provided with an annular groove A, and a plurality of threaded holes communicating with the inside of the shell are uniformly arranged in the annular groove A, and a bolt is screwed in the threaded hole. The ring is rotatably arranged in the annular groove A, and a through hole A is formed in the ring. The bottom plate is arranged in the shell, and a plurality of resistance strain gauges are arranged on the bottom plate. The pressure plate is slidably arranged in the shell, and the pressure plate is located above the resistance strain gauges and in contact with the upper surface thereof. The pressure rod is slidably arranged in the shell, and the side surface of the pressure rod is provided with a limiting block. The gland is arranged on the inner side of the shell, and the upper surface of the gland is on the same horizontal plane as the upper surface of the shell. A through hole B is formed in the center of the gland, and the pressure rod passes through the through hole B and is slidably connected thereto. The limiting block on the side surface of the pressure rod is in abutment with the lower surface of the gland. The bottom of the gland is provided with a convex pipe, which is inserted into the inside of the shell and is slidably connected thereto. The side surface of the convex pipe is provided with an annular groove B, and the height of the annular groove B is the same as that of the annular groove A. The end of the shell is inserted into the annular groove B and is slidably connected thereto, and the outer diameter of the screw rod is the same as the height of the annular groove A and the annular groove B.

[0004] The above-mentioned device can conveniently perform force measurement during use, but lacks a good buffer protection mechanism during use, and the internal elements are easily damaged by the impact force of the initial force during force measurement, thereby affecting the working effect. UTILITY MODEL CONTENTS

[0005] The high-precision force sensor structure aims at solving the problems in the prior art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high-precision force sensor structure, including shell, the shell side is fixedly connected with wire, the shell top is provided with cover plate, the shell inside is provided with mounting seat, the mounting seat top is fixedly installed with force sensor main body, the mounting seat bottom is provided with support mechanism, the cover plate inside is provided with fixed mechanism.

[0007] As a preferred technical scheme of the utility model, the shell includes mounting groove and fixed hole, the shell top is provided with mounting groove, the mounting groove side is provided with fixed hole, the mounting groove inner diameter size is compatible with cover plate outer diameter size, the cover plate and mounting groove are movably inserted, the fixed hole is provided with multiple, the fixed hole is evenly and symmetrically distributed in mounting groove inner wall.

[0008] As a preferred technical scheme of the utility model, the cover plate includes through hole, press bar and limit plate, the cover plate inside is provided with through hole, the through hole inside is provided with press bar, the press bar top is provided with limit plate, the press bar outer diameter size is compatible with through hole inner diameter size, the press bar and through hole are movably inserted.

[0009] As a preferred technical scheme of the utility model, the mounting seat outer diameter size is compatible with shell inner diameter size, the mounting seat and shell are movably sleeved.

[0010] As a preferred technical scheme of the utility model, the support mechanism includes fixed rod, reset spring, sliding block, movable support rod and damping rod, the shell inner wall bottom is fixedly installed with fixed rod, the fixed rod outer wall is provided with reset spring, the fixed rod is provided with sliding block, the sliding block is provided with movable support rod, the shell bottom is fixedly installed with damping rod, the reset spring is spirally around fixed rod outer wall, the sliding block inside is provided with perforation, the sliding block is slidably connected with fixed rod through perforation.

[0011] As a preferred technical scheme of the utility model, the movable support rod is provided with multiple, the movable support rod both ends are rotatably connected with sliding block and mounting seat through rotating shaft, the damping rod is installed between shell and mounting seat.

[0012] As a preferred technical scheme of the utility model, the fixed mechanism includes movable slot, compression spring and bolt, the cover plate inside is provided with movable slot, the movable slot inside is provided with compression spring, the compression spring one end is fixedly connected with bolt, the bolt outer diameter size is compatible with fixed hole inner diameter size, the bolt and fixed hole are movably inserted.

[0013] Compared with the prior art, the high-precision force sensor structure has the following beneficial effects:

[0014] 1、The high-precision force sensor structure is used in cooperation with the fixing rod, the reset spring, the sliding block, the movable supporting rod and the damping rod, the sliding block is slidably connected with the fixing rod, the movable supporting rod is rotatably connected with the sliding block and the mounting seat, the preliminary pressing force can be unloaded during the use of the force sensor, the damage of the equipment caused by too large impact force is prevented, and long-term work use is facilitated.

[0015] 2、The high-precision force sensor structure is used in cooperation with the through hole, the pressing rod and the limiting plate arranged on the cover plate, the force sensor body can be pressed by pressing the limiting plate to push the pressing rod, force use is facilitated, the limiting plate is used for limiting, the damage of the force sensor caused by too large pressing force exceeding the force limit value is prevented, the mounting groove, the fixing hole, the movable slot, the compression spring and the bolt are used in cooperation, the bolt is movably inserted into the fixing hole, the cover plate can be quickly installed and disassembled by pulling the bolt, the user can conveniently perform maintenance work, and operation and use are convenient. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a sectional structure schematic view of the utility model;

[0017] Figure 2 It is a whole structure schematic view of the utility model;

[0018] Figure 3 It is a top view structure schematic view of the utility model shell;

[0019] Figure 4 It is a cover plate sectional structure schematic view of the utility model.

[0020] In the drawing: 1, shell; 101, mounting groove; 102, fixing hole; 2, wire; 3, cover plate; 301, through hole; 302, pressing rod; 303, limiting plate; 4, mounting seat; 5, force sensor body; 6, supporting mechanism; 601, fixing rod; 602, reset spring; 603, sliding block; 604, movable supporting rod; 605, damping rod; 7, fixing mechanism; 701, movable slot; 702, compression spring; 703, bolt. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0022] Please refer to Figures 1-4 In the present embodiment: a high-precision force sensor structure, comprising a shell 1, the shell 1 side is fixedly connected with a wire 2, the shell 1 top is provided with a cover plate 3, the shell 1 inside is provided with a mounting seat 4, the mounting seat 4 top is fixedly installed with a force sensor main body 5, the mounting seat 4 bottom is provided with a supporting mechanism 6, the cover plate 3 inside is provided with a fixing mechanism 7.

[0023] Refer to Figure 1 And Figure 3 The shell 1 includes a mounting groove 101 and a fixing hole 102, the shell 1 top is provided with the mounting groove 101, the mounting groove 101 side is provided with the fixing hole 102, the mounting groove 101 inner diameter size is matched with the cover plate 3 outer diameter size, the cover plate 3 is movably inserted with the mounting groove 101, the fixing hole 102 is provided with a plurality of fixing holes, the fixing hole 102 is uniformly and symmetrically distributed on the inner wall of the mounting groove 101;

[0024] Specifically: it is convenient to connect and install the cover plate 3, and it is convenient to work.

[0025] Refer to Figure 2 And Figure 4 The cover plate 3 includes a through hole 301, a pressing rod 302 and a limiting plate 303, the cover plate 3 inside is provided with the through hole 301, the through hole 301 inside is provided with the pressing rod 302, the pressing rod 302 top is provided with the limiting plate 303, the pressing rod 302 outer diameter size is matched with the through hole 301 inner diameter size, the pressing rod 302 is movably inserted with the through hole 301;

[0026] Specifically: it is convenient to press the force sensor main body 5, and it is convenient to work.

[0027] Refer to Figure 1The outer diameter size of the mounting seat 4 is matched with the inner diameter size of the shell 1, and the mounting seat 4 is movably sleeved with the shell 1; the supporting mechanism 6 comprises a fixed rod 601, a reset spring 602, a sliding block 603, a movable supporting rod 604 and a damping rod 605, the fixed rod 601 is fixedly installed on the inner wall bottom of the shell 1, the reset spring 602 is arranged on the outer wall of the fixed rod 601, the sliding block 603 is arranged on the fixed rod 601, the movable supporting rod 604 is arranged on the sliding block 603, the damping rod 605 is fixedly installed on the bottom of the shell 1, the reset spring 602 is spirally arranged on the outer wall of the fixed rod 601, the sliding block 603 is internally provided with a through hole, and the sliding block 603 is slidably connected with the fixed rod 601 through the through hole; a plurality of movable supporting rods 604 are arranged, and the movable supporting rods 604 are rotatably connected with the sliding block 603 and the mounting seat 4 through rotating shafts at two ends, respectively, and the damping rod 605 is installed between the shell 1 and the mounting seat 4.

[0028] Specifically, the mounting seat 4 can be movably supported, buffering unloading force is facilitated, and damage to internal elements caused by excessive impact force is prevented.

[0029] Referring to Figure 4 The fixing mechanism 7 comprises a movable groove 701, a compression spring 702 and a plug 703, the movable groove 701 is arranged in the cover plate 3, the compression spring 702 is arranged in the movable groove 701, one end of the compression spring 702 is fixedly connected with the plug 703, the outer diameter size of the plug 703 is matched with the inner diameter size of the fixed hole 102, and the plug 703 is movably inserted into the fixed hole 102.

[0030] Specifically, the cover plate 3 can be fixedly installed, and installation and use stability can be improved.

[0031] The working principle and use process of the utility model are as follows: in the use process, an operator can press the limiting plate 303 to push the pressing rod 302 to press the force sensor main body 5, force measurement is facilitated, the limiting plate 303 is used for limiting, excessive pressing force can be prevented, damage to the force sensor main body 5 caused by exceeding the force measurement limit value is prevented, when the force sensor main body 5 is damaged in the use process, the plug 703 can be separated from the fixed hole 102 by pulling, the cover plate 3 can be quickly disassembled, and the internal elements of the shell 1 can be conveniently overhauled and maintained, and operation and use are convenient.

[0032] Finally, it should be noted that: the above only for preferred embodiment of the utility model has been described in detail, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, still can the technical scheme recorded in the foregoing each embodiment be modified, or some technical features be replaced equivalently. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A high precision load cell structure comprising a housing (1), characterized in that: The shell (1) is fixedly connected with a wire (2) on one side, the shell (1) is provided with a cover plate (3) on the top, the shell (1) is provided with a mounting seat (4) inside, the mounting seat (4) is fixedly installed with a force sensor main body (5) on the top, the mounting seat (4) is provided with a supporting mechanism (6) at the bottom, and the cover plate (3) is provided with a fixing mechanism (7) inside.

2. A high precision load cell structure according to claim 1, wherein: The shell (1) includes a mounting groove (101) and a fixing hole (102), the shell (1) is provided with a mounting groove (101) on the top, the mounting groove (101) is provided with a fixing hole (102) on one side, the inner diameter size of the mounting groove (101) is matched with the outer diameter size of the cover plate (3), the cover plate (3) is movably inserted into the mounting groove (101), and a plurality of fixing holes (102) are arranged.

3. The high precision load cell structure of claim 1, wherein: The cover plate (3) includes a through hole (301), a pressing rod (302) and a limiting plate (303), the cover plate (3) is provided with a through hole (301) inside, the through hole (301) is provided with a pressing rod (302) inside, the pressing rod (302) is provided with a limiting plate (303) on the top, the outer diameter size of the pressing rod (302) is matched with the inner diameter size of the through hole (301), and the pressing rod (302) is movably inserted into the through hole (301).

4. The high precision load cell structure of claim 1, wherein: The mounting seat (4) is matched with the inner diameter size of the shell (1), and the mounting seat (4) is movably sleeved with the shell (1).

5. The high precision load cell structure of claim 1, wherein: The supporting mechanism (6) includes a fixed rod (601), a reset spring (602), a sliding block (603), a movable supporting rod (604) and a damping rod (605), the fixed rod (601) is fixedly installed on the inner wall of the shell (1) at the bottom, the reset spring (602) is arranged on the outer wall of the fixed rod (601), the sliding block (603) is arranged on the fixed rod (601), the movable supporting rod (604) is arranged on the sliding block (603), the damping rod (605) is fixedly installed at the bottom of the shell (1), the reset spring (602) is spirally wound on the outer wall of the fixed rod (601), the sliding block (603) is provided with a through hole, and the sliding block (603) is slidably connected with the fixed rod (601) through the through hole.

6. A high precision load cell structure according to claim 5 wherein: A plurality of movable supporting rods (604) are arranged, and the movable supporting rods (604) are rotatably connected with the sliding block (603) and the mounting seat (4) through rotating shafts at two ends, respectively.

7. The high precision load cell structure of claim 1, wherein: The fixing mechanism (7) includes a movable groove (701), a compression spring (702) and a bolt (703), the movable groove (701) is arranged inside the cover plate (3), the compression spring (702) is arranged inside the movable groove (701), one end of the compression spring (702) is fixedly connected with the bolt (703), the outer diameter size of the bolt (703) is matched with the inner diameter size of the fixing hole (102), and the bolt (703) is movably inserted into the fixing hole (102).

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