CN219347554U

CN219347554U - Force measuring device for micrometer

Info

Publication number: CN219347554U
Application number: CN202320867962.1U
Authority: CN
Inventors: 马昕辰
Original assignee: Ruiboen Precision Measurement Changzhou Co ltd
Current assignee: Ruiboen Precision Measurement Changzhou Co ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-14
Anticipated expiration: 2033-04-18

Abstract

The application discloses a micrometer is with force measurement device belongs to force measurement device technical field. The main body is provided with a connecting end; the cap body is sleeved at one end of the main body far away from the connecting end, and a ring cavity is formed after the cap body and the main body are sleeved; the first friction wheel is sleeved on the main body and is positioned in the annular cavity; the second friction wheel is sleeved on the cap body, is positioned in the annular cavity and is in contact with the first friction wheel; a spring mounted between the first friction wheel and the main body; the connecting end is suitable for being driven by the cap body to approach or be far away from the object to be detected, the connecting end receives the resistance of the object to be detected, and after the resistance is larger than the friction force between the first friction wheel and the second friction wheel, the main body and the cap body form relative reverse rotation. According to the force measuring device for the micrometer, the friction wheels and the spring pieces are arranged in two plane contact, so that the force measuring device has no axial impact force when the maximum force is applied, and the stability of axial force application is guaranteed.

Description

Force measuring device for micrometer

Technical Field

The application relates to the technical field of force measuring devices, in particular to a force measuring device for a micrometer.

Background

In the conventional micrometer ratchet force measuring mechanism, the tooth shapes of two opposite ratchets are distributed in the axial direction, when the axial blocking force (measuring force) is not greater than the pressing force of the two ratchets on an axial spring in the using process, the two ratchets in the mechanism keep mutual adherence and do not generate opposite rotation, when the axial blocking force (measuring force) is greater than the pressing force of the two ratchets on the axial spring, the two ratchets can reversely rotate, and the two ratchets are influenced by the change of the tooth shape height difference, and can generate sound in the rotating process to prompt that the current state is in the application state of the maximum force measurement;

however, the force measuring mechanism is also affected by the change of the tooth profile height difference, and intermittent axial impact force is generated in the axial direction of the force measuring mechanism, so that the stability of the axial measuring force is affected, and therefore, a force measuring device for a micrometer is needed to solve the problems.

It should be noted that the above information disclosed in this background section is only for understanding the background of the present application concept and, therefore, it may contain information that does not constitute prior art.

Disclosure of Invention

Based on the above problems existing in the prior art, the problems to be solved by the present application are: the utility model provides a micrometer is with measuring force device, has solved because the change of profile of tooth difference in height, and the axial of force measuring mechanism produces intermittent axial impact force to the stability of axial measurement force has been influenced.

The technical scheme adopted for solving the technical problems is as follows: the force measuring device for the micrometer comprises a main body, wherein the main body is provided with a connecting end, and the connecting end is used for contacting with an object to be measured and measuring the object to be measured; the cap body is sleeved at one end of the main body far away from the connecting end, and an annular cavity is formed between the cap body and the main body after the cap body is sleeved with the main body; the first friction wheel is sleeved on the main body and is positioned in the annular cavity; the second friction wheel is sleeved on the cap body, and is positioned in the annular cavity and contacted with the first friction wheel; the spring is arranged between the first friction wheel and the main body and is used for driving the first friction wheel to cling to the second friction wheel; the connecting end is suitable for being driven by the cap body to approach or be far away from the object to be detected, the connecting end receives resistance of the object to be detected, and after the resistance is larger than friction force between the first friction wheel and the second friction wheel, the main body and the cap body form relative reverse rotation.

Further, a circumferential ratchet wheel is arranged on the cap body at the position of the annular cavity, and the ratchet wheel is provided with a tooth top and a tooth bottom; a spring piece is arranged on the main body at the position of the annular cavity; the spring piece contacts with the ratchet, when the main body and the cap body form relative reverse rotation, the spring piece contacts with the tooth top and the tooth bottom at intervals to form intermittent sound for reminding.

Further, the first friction wheel and the second friction wheel are of a plane friction structure.

Further, the first friction wheel and the second friction wheel are respectively provided with a corresponding plane ratchet wheel, and the plane ratchet wheels are used for forming intermittent sounds for reminding through mutual contact of the plane ratchet wheels when the main body and the cap body are rotated oppositely.

Further, a groove body is arranged on the main body, one end of the spring piece is installed in the groove body, and one end of the spring piece, which is far away from the groove body, is contacted with the ratchet wheel.

Further, the spring piece is fixedly mounted on the main body.

Further, the cap body is far away from one end of the main body and is provided with a mounting groove, a circular plate is placed in the mounting groove, screws are mounted on the main body, the cap body and the circular plate, and the main body and the cap body are mounted through the circular plate and the screws.

Further, a contact surface is arranged at one end of the connecting end far away from the main body, and the contact surface is used for being in contact with an object to be detected.

The beneficial effects of this application are: the utility model provides a pair of micrometer is with force measurement device through being provided with friction pulley and the spring leaf of two plane contact, can make when maximum dynamometry is applyed, force measurement device does not have axial impact force to guarantee the stability of axial application of force, have the sound production simultaneously and remind the function.

In addition to the objects, features, and advantages described above, there are other objects, features, and advantages of the present application. The present application will be described in further detail with reference to the drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

FIG. 1 is an overall schematic view of a micrometer force measuring device of the present application;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1;

FIG. 3 is a schematic view of the partial structure at A in FIG. 2;

FIG. 4 is a schematic view of the structure of FIG. 2B;

wherein, each reference sign in the figure:

1. a main body; 11. a first boss; 12. a tank body; 13. a connection end; 14. a force measuring end; 2. a cap body; 21. a second boss; 22. a ratchet wheel; 221. tooth tops; 222. a tooth bottom; 3. a first friction wheel; 34. a friction surface; 4. a second friction wheel; 5. a circular plate; 6. a screw; 7. a spring; 8. a spring piece; 91. a front cavity; 92. a rear cavity.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

The application provides a micrometer force measuring device, which is provided with a shell (not shown in the figure), wherein the shell is provided with two openings at two ends, and meanwhile, the force measuring device is in threaded connection with the shell, so that under the action of force, the force measuring device can reciprocate along the directions of the openings at the two ends of the shell, the structure is a universal structure of the micrometer, the specific details of the structure are not repeated, and the application is mainly aimed at the improvement of the structure of the force measuring device;

as shown in fig. 1, the force measuring device comprises a main body 1 installed inside a housing, the main body 1 is in threaded connection with the inside of the housing, so that the main body 1 can reciprocate along the opening directions of two ends of the housing by rotating the main body 1, meanwhile, one end of the main body 1 is provided with a connecting end 13, and a force measuring end 14 contacted with an object to be measured is sleeved on the connecting end 13, so that the force measuring end 14 contacts with the object to be measured and measures the size of the object to be measured and is far away from the object to be measured in the process that the main body 1 moves in the housing;

the cap body 2 is sleeved on the main body 1 at a position far away from the connecting end 13, meanwhile, a mounting groove is formed in one end, far away from the main body 1, of the cap body 2, a circular plate 5 is placed in the mounting groove, a threaded hole is formed in the main body 1, corresponding mounting holes are formed in the cap body 2 and the circular plate 5, and screws 6 are arranged in the threaded hole and the mounting holes, so that the main body 1 and the cap body 2 are mounted through the screws 6 and the circular plate 5, and in the application, the circular plate 5 is mainly used for preventing the cap body 2 and the main body 1 from falling off;

as shown in fig. 1-2, an annular cavity is formed between the main body 1 and the cap 2, the annular cavity comprises a front cavity 91 at the front end and a rear cavity 92 at the rear end, a first boss 11 is arranged at the position of the main body 1 at the front cavity 91, a first friction wheel 3 is sleeved on the first boss 11, and a spring 7 is arranged between the first friction wheel 3 and the main body 1;

a second boss 21 is arranged at the position of the cap body 2, which is positioned in the front cavity 91, a second friction wheel 4 is sleeved on the second boss 21, the second friction wheel 4 corresponds to the first friction wheel 3 in position, and under the action of a spring 7, the first friction wheel 3 and the second friction wheel 4 are in close contact with each other, so that a friction surface 34 is formed between the second friction wheel 4 and the first friction wheel 3, and the first friction wheel 3 and the second friction wheel 4 generate surface friction with each other through the friction surface 34;

in the application, the second friction wheel 4 is pressed by the first friction wheel 3 under the action of the spring 7 fixed with the main body 1, and the cap body 2 is attached to the circular plate 5, so that the main body 1 and the cap body 2 can form a whole capable of rotating together through mutual friction of the first friction wheel 3 and the second friction wheel 4;

in summary, when the cap 2 is manually rotated during measurement, the rotation of the cap 2 drives the second friction wheel 4 to rotate, and the second friction wheel 4 drives the first friction wheel 3 to rotate by virtue of the planar friction force between the second friction wheel 4 and the first friction wheel 3, so that the first friction wheel 3 drives the main body 1 to rotate inside the housing and approach the object to be measured, and the main body is contacted with the object to be measured through the contact surface 14, and the object to be measured is measured.

When the contact surface 14 contacts the object to be measured, it indicates that the amplitude of the rotating cap 2 at this time has satisfied the requirement of measurement, if the rotating cap 2 is continuously rotated, a plurality of objects to be measured may be extruded, so that not only the measurement result is deviated, but also the force measuring device is damaged, and therefore, a sounding reminding structure is provided in the force measuring device, so as to reach the requirement that the amplitude of the rotating cap 2 has satisfied the measurement, remind the operator to stop the operation, specifically:

as shown in fig. 2 to 4, the body 1 is provided with a slot 12, the inside of the slot 12 is fixedly provided with a spring piece 8, meanwhile, the position of the cap 2, which is located in the rear cavity 92, is provided with a circumferential ratchet wheel 22, and one end of the spring piece 8, which is far away from the slot 12, is located in the rear cavity 92 and is in contact with the tooth structure of the ratchet wheel 22, because the tooth structure of the ratchet wheel 22 is provided with a tooth top 221 and a tooth bottom 222, when the body 1 and the cap 2 are relatively stationary, one end of the spring piece 8, which is far away from the slot 12, is lapped on the ratchet wheel 22, and when the body 1 and the cap 2 are relatively rotated, one end of the spring piece 8, which is far away from the slot 12, is relatively moved with the ratchet wheel 22, so that the spring piece 8 is in interval contact with the tooth top 221 and the tooth bottom 222, because the spring piece 8 is impacted with the tooth top 221 or the tooth bottom 222, thereby forming an intermittent sound for reminding an operator, and at the same time, the ratchet wheel 22 can be prevented from being reversed by the spring piece 8, and the stability of the force measuring device can be further ensured.

As an embodiment of the present application, the spring piece 8 may be directly fixed on the main body 1, without opening the slot 12, which is more convenient and quick.

As an embodiment of the present application, corresponding planar ratchets may be disposed on the outer ring or the inner ring of the first friction wheel 3 and the second friction wheel 4, so that when the main body 1 and the cap body 2 rotate relatively, intermittent sounds for reminding an operator may be formed through the mutual contact between the planar ratchets.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A micrometer force measurement device, characterized in that: comprising the following steps:

a body (1), the body (1) having a connection end (13);

the cap body (2) is sleeved at one end, far away from the connecting end (13), of the main body (1), and a ring cavity is formed between the cap body (2) and the main body (1) after the cap body (2) is sleeved;

the first friction wheel (3) is sleeved on the main body (1), and the first friction wheel (3) is positioned in the annular cavity;

the second friction wheel (4) is sleeved on the cap body (2), and the second friction wheel (4) is positioned in the annular cavity and is in contact with the first friction wheel (3);

a spring (7), wherein the spring (7) is arranged between the first friction wheel (3) and the main body (1) and is used for driving the first friction wheel (3) to cling to the second friction wheel (4);

wherein: the connecting end (13) is suitable for being driven by the cap body (2) to be close to or far away from an object to be detected, the connecting end (13) receives resistance of the object to be detected, and after the resistance is larger than friction force between the first friction wheel (3) and the second friction wheel (4), the main body (1) and the cap body (2) form relative reverse rotation.

2. A micrometer force measuring device according to claim 1, wherein: a circumferential ratchet wheel (22) is arranged on the cap body (2) at the position of the annular cavity, and the ratchet wheel (22) is provided with a tooth top (221) and a tooth bottom (222);

a spring piece (8) is arranged on the main body (1) at the position of the annular cavity;

wherein: the spring piece (8) is in contact with the ratchet wheel (22), and when the main body (1) and the cap body (2) form relative reverse rotation, the spring piece (8) is in interval contact with the tooth top (221) and the tooth bottom (222) so as to form intermittent sound for reminding.

3. A micrometer force measuring device according to claim 1, wherein: the first friction wheel (3) and the second friction wheel (4) are of a planar friction structure.

4. A micrometer force measuring device according to claim 1, wherein: the outer ring or the inner ring of the first friction wheel (3) and the outer ring or the inner ring of the second friction wheel (4) are respectively provided with a corresponding plane ratchet wheel, and the plane ratchet wheels are used for forming intermittent noise for reminding through mutual contact of the plane ratchet wheels when the main body (1) and the cap body (2) form relative reverse rotation.

5. A micrometer force measuring device according to claim 2, wherein: the novel ratchet wheel is characterized in that a groove body (12) is arranged on the main body (1), one end of the spring piece (8) is arranged in the groove body (12), and one end, away from the groove body (12), of the spring piece (8) is contacted with the ratchet wheel (22).

6. A micrometer force measuring device according to claim 2, wherein: the spring piece (8) is fixedly arranged on the main body (1).

7. A micrometer force measuring device according to claim 1, wherein: the novel helmet is characterized in that an installation groove is formed in one end, far away from the main body (1), of the helmet body (2), a circular plate (5) is placed in the installation groove, screws (6) are installed on the main body (1), the helmet body (2) and the circular plate (5), and the main body (1) and the helmet body (2) are installed through the circular plate (5) and the screws (6).

8. A micrometer force measuring device according to claim 1, wherein: one end of the connecting end (13) far away from the main body (1) is provided with a contact surface (14), and the contact surface (14) is used for being in contact with an object to be detected.