Miniature force transducer

Abstract

The utility model relates to the technical field of force cell sensors, and discloses a miniature force cell sensor, which comprises a chassis and a sensor body fixedly connected to the top of the chassis, the top of the chassis is rotatably connected with a rotating shaft, the top end of the rotating shaft is fixedly sleeved with a rotating disc, the rotating disc is provided with three arc-shaped grooves at equal intervals, and the three arc-shaped grooves are fixedly connected with the sensor body. Three arc-shaped grooves are formed in the top of the sensor body, first sliding columns are arranged on the three arc-shaped grooves in a sliding mode, the three first sliding columns slide on the three arc-shaped grooves respectively through rotation of the rotating disc, and therefore rolling prevention work is conducted on a to-be-detected object placed on the top of the sensor body by means of interval adjustment of the three first sliding columns. Therefore, a large to-be-detected object can be rapidly placed in the center of the top of the sensor body for detection.

Description

Technical Field

[0001] The utility model relates to the technical field of force measuring sensors, in particular to a miniature force measuring sensor. Background Art

[0002] A sensor is an inductive device used to detect the object being measured. It can sense the information of the object being measured and provide feedback of this information. It converts the measurement results into electrical signals and outputs them to the controller through wires, so that the controller can make corresponding adjustments. During the force application process of the sensor, it is often necessary to manually and accurately place the object being measured in the exact center of the sensor. However, it is not possible to ensure that the object being measured is placed in the exact center of the sensor at one time. If the object being tested is not placed in place or its shape is uneven, the downward pressure exerted by the object being tested is not in the exact center of the sensor, which will cause uneven force on the sensor, resulting in large errors in the sensor measurement results, ultimately affecting the accuracy of the test results.

[0003] A Chinese utility model patent with publication number CN216386081U discloses a miniature force sensor, including a square frame and a shell. The shell is fixed to the bottom end of the square frame. The upper and lower ends of the square frame are respectively fixed with a top plate and a bottom plate. The lower end of the bottom plate is connected to a bottom cover by screws. This solves the problem that the existing sensor will suffer from uneven force due to improper placement of the object to be measured, thereby affecting the accuracy of the test result.

[0004] However, when the above device is in use, since a spring is provided at the bottom of the contact sheet, when the test object is placed on the top of the contact sheet, the spring will apply a reverse force after receiving the pressure, causing problems with the pressure data received by the sensor. In addition, since the contact sheet area is small, it cannot be placed stably for testing slightly larger objects.

[0005] Therefore, it is necessary to design a miniature force sensor to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a miniature force sensor for solving the technical problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a miniature force sensor, comprising a chassis and a sensor body fixedly connected to the top of the chassis, the top of the chassis is rotatably connected to a rotating shaft, and the top of the rotating shaft is fixedly sleeved with a rotating disk, three arc grooves with equal intervals are provided on the rotating disk, and a first sliding column is slidably provided on the three arc grooves, and the bottom ends of the three first sliding columns are fixedly sleeved with a first limit block and a second limit block, and the bottom and top of the first limit block and the second limit block are respectively fitted with the top and the bottom of the rotating disk, a rotating plug-in mechanism is fixedly connected to the top of the rotating disk, and a plurality of slots are provided on the outer surface of the chassis, and the rotating plug-in mechanism is rotatably plugged between the plurality of slots.

[0008] Preferably, the rotating plug-in mechanism includes a fixed box, the fixed box is fixedly connected to the top of the rotating disk, a sliding block is slidably arranged inside the fixed box, a second sliding column is fixedly connected to one side of the sliding block, the second sliding column passes through one end of the outside of the fixed box and is fixedly connected to a pull block, a plug column is fixedly connected to one side of the bottom of the pull block, and a spring is fixedly connected to one side of the sliding block.

[0009] Preferably, the size of the pin matches the size of the slot, and a plurality of the slots are distributed in an arc shape on one side of the outer surface of the rotating disk.

[0010] Preferably, the spring is sleeved on the outer surface of one end of the second sliding column inside the fixing box, and two ends of the spring are respectively fixed to the sliding block and one side of the inner cavity of the fixing box.

[0011] Preferably, the sliding block is a square block, and the outer surface of the sliding block is in contact with the inner wall of the fixing box. A plug hole is provided on one side of the fixing box, and one end of the second sliding column is slidably inserted into the plug hole.

[0012] Preferably, a gap is provided between the chassis and the rotating disk, and three second limit blocks are rotatably provided inside the gap, and the tops and bottoms of the three second limit blocks are respectively fitted with the bottom of the chassis and the top of the rotating disk.

[0013] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0014] The utility model realizes the sliding of the three first sliding posts on the three arc-shaped grooves respectively by the rotation of the rotating disk, so as to prevent the object to be inspected placed on the top of the sensor body from rolling by adjusting the spacing between the three first sliding posts, so that a larger object to be inspected can also be quickly placed at the top center position of the sensor body for inspection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the utility model in use state;

[0017] Figure 3 It is an exploded schematic diagram of the chassis and rotating disk structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure decomposition of the fixing box of the utility model;

[0019] In the figure: 1, chassis; 2, rotating disk; 3, sensor body; 4, first sliding column; 5, first limit block; 6, slot; 7, pull block; 8, fixed box; 9, second limit block; 10, second sliding column; 11, plug column; 12, sliding block; 13, arc groove; 14, rotating shaft; 15, spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0021] Obviously, many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0022] See also Figure 1-4The utility model provides a miniature force sensor, comprising a chassis 1 and a sensor body 3 fixedly connected to the top of the chassis 1, the top of the chassis 1 is rotatably connected with a rotating shaft 14, and the top of the rotating shaft 14 is fixedly sleeved with a rotating disk 2, the rotating disk 2 is provided with three arc grooves 13 with equal intervals, and the three arc grooves 13 are slidably provided with a first sliding column 4, the bottom ends of the three first sliding columns 4 are fixedly sleeved with a first limit block 5 and a second limit block 9, and the bottom and top of the first limit block 5 and the second limit block 9 are respectively fitted with the top and bottom of the rotating disk 2, the top of the rotating disk 2 is fixedly connected with a rotating plug-in mechanism, the outer surface of the chassis 1 is provided with a plurality of slots 6, and the rotating plug-in mechanism is rotatably plugged with the plurality of slots 6 respectively. When the object pressure is applied at this time, the rotation plug-in mechanism is rotated and plugged between the plurality of slots 6. By placing the object on the top of the sensor body 3 and pulling the rotating plug-in mechanism out of the slot 6 at the same time, when the rotating disk 2 is rotated, the sliding of the three arc grooves 13 can be utilized to make the three first sliding posts 4 slide inside the three arc grooves 13 respectively, so as to adjust the distance between the three first sliding posts 4, so that the object on the top of the sensor body 3 can be stably placed at the center position of the sensor body 3, and the three first sliding posts 4 are utilized to limit the rolling of the placed object. As long as it is restricted, the rotating plug-in mechanism can be plugged into the slot 6 at the corresponding position. In this process, the three first sliding posts 4 are not utilized to clamp the object, thus avoiding the problem of inaccurate pressure detection of the object to be measured, and the sensor body 3 can also detect slightly larger objects, which greatly increases the practicality of the sensor body 3.

[0023] It should be noted that, the rotating plug-in mechanism pull block 7 mentioned in the above description, when the pull block 7 is pulled toward the outside of the rotating disk 2, the plug post 11 is gradually separated from the inserted slot 6, and the second sliding column 10 drives the sliding block 12 to slide inside the fixed box 8, and the sliding block 12 squeezes the spring 15 to produce deformation and elasticity. When the rotating disk 2 rotates to the desired position, the elasticity of the spring 15 is used to insert the plug post 11 into the corresponding slot 6 to limit the rotation position of the rotating disk 2.

[0024] In order to facilitate the mutual plugging between the plug post 11 and the plurality of slots 6 , the size of the plug post 11 matches the size of the slot 6 , and the plurality of slots 6 are distributed in an arc shape on one side of the outer surface of the rotating disk 2 .

[0025] Furthermore, in order to conveniently utilize the elasticity of the spring 15, multiple plugs 11 can be inserted into the corresponding slots 6 for limiting when the rotating disk 2 rotates, the spring 15 is sleeved on the outer surface of one end of the second sliding column 10 inside the fixed box 8, and the two ends of the spring 15 are respectively fixed to the sliding block 12 and one side of the inner cavity of the fixed box 8.

[0026] When the plug post 11 is inserted into the slot 6, in order to make the plug post 11 slide stably, the sliding block 12 is a square block, and the outer surface of the sliding block 12 fits against the inner wall of the fixed box 8. A socket is provided on one side of the fixed box 8, and one end of the second sliding post 10 is slidably inserted into the inside of the socket.

[0027] Furthermore, in order to facilitate the stable sliding of the three first sliding columns 4 on the three arc grooves 13, a gap is set between the chassis 1 and the rotating disk 2, and three second limit blocks 9 are rotatably arranged inside the gap, and the top and bottom of the three second limit blocks 9 are respectively fitted with the bottom of the chassis 1 and the top of the rotating disk 2.

[0028] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention.

[0029] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present utility model will not further describe various possible combinations.

[0030] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A miniature force sensor, comprising a chassis (1) and a sensor body (3) fixedly connected to the top of the chassis (1), characterized in that: The top of the chassis (1) is rotatably connected to a rotating shaft (14), and the top of the rotating shaft (14) is fixedly sleeved with a rotating disk (2), and three arc grooves (13) with equal spacing are provided on the rotating disk (2), and first sliding columns (4) are slidably provided on the three arc grooves (13), and the bottom ends of the three first sliding columns (4) are fixedly sleeved with a first limit block (5) and a second limit block (9), and the bottom and top of the first limit block (5) and the second limit block (9) are respectively fitted with the top and bottom of the rotating disk (2), and a rotating plug-in mechanism is fixedly connected to the top of the rotating disk (2), and a plurality of slots (6) are provided on the outer surface of the chassis (1), and the rotating plug-in mechanism is rotatably plugged between the plurality of slots (6).

2. A micro force sensor according to claim 1, characterized in that: The rotating plug-in mechanism comprises a fixed box (8), the fixed box (8) is fixedly connected to the top of the rotating disk (2), a sliding block (12) is slidably arranged inside the fixed box (8), a second sliding column (10) is fixedly connected to one side of the sliding block (12), one end of the second sliding column (10) passing through the outside of the fixed box (8) is fixedly connected to a pull block (7), a bottom side of the pull block (7) is fixedly connected to an insert column (11), and a spring (15) is fixedly connected to one side of the sliding block (12).

3. A micro force sensor according to claim 2, characterized in that: The size of the plug post (11) matches the size of the slot (6), and a plurality of the slots (6) are distributed in an arc shape on one side of the outer surface of the rotating disk (2).

4. A micro force sensor according to claim 2, characterized in that: The spring (15) is sleeved on the outer surface of one end of the second sliding column (10) inside the fixed box (8), and the two ends of the spring (15) are respectively fixed to one side of the inner cavity of the sliding block (12) and the fixed box (8).

5. A micro force sensor according to claim 2, characterized in that: The sliding block (12) is a square block, and the outer surface of the sliding block (12) fits the inner wall of the fixed box (8). A plug hole is provided on one side of the fixed box (8), and one end of the second sliding column (10) is slidably inserted into the inside of the plug hole.

6. A micro force sensor according to claim 1, characterized in that: A gap is provided between the chassis (1) and the rotating disk (2), and three second limit blocks (9) are rotatably provided inside the gap, and the tops and bottoms of the three second limit blocks (9) are respectively fitted with the bottom of the chassis (1) and the top of the rotating disk (2).

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