CN220525194U - Pretightening force measuring device and pretightening force measuring tool - Google Patents
Pretightening force measuring device and pretightening force measuring tool Download PDFInfo
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- CN220525194U CN220525194U CN202321759460.3U CN202321759460U CN220525194U CN 220525194 U CN220525194 U CN 220525194U CN 202321759460 U CN202321759460 U CN 202321759460U CN 220525194 U CN220525194 U CN 220525194U
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- force
- test piece
- force sensor
- pretightening force
- mounting
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- 238000012360 testing method Methods 0.000 claims abstract description 46
- 238000005259 measurement Methods 0.000 claims abstract description 25
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000036316 preload Effects 0.000 description 1
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Abstract
The embodiment of the application provides a pretightning force measuring device and pretightning force measurement frock, pretightning force measuring device includes: a support assembly; the fixing piece is connected to the supporting component and is provided with a mounting part which is arranged opposite to the supporting component and used for placing a test piece and allowing a threaded part of the test piece to penetrate out; a measuring unit located below the mounting portion, the measuring unit including a force sensor and a connecting member connected to each other, one end of the force sensor being connected to the supporting member, the other end being threadably connected to the threaded portion through the connecting member; when the threaded portion is connected to the force sensor based on a preset torsion force, the measuring unit can determine the pretightening force generated by the test piece through the force sensor. The pretightening force measuring device of the embodiment of the application is simple in integral structure, easy to assemble and use and good in user experience.
Description
Technical Field
The embodiment of the application relates to the technical field of measurement, in particular to a pretightening force measuring device and pretightening force measuring tool.
Background
In electronic devices such as notebooks, screws of different specifications are generally used for locking. However, the tightening torque of the screw is usually set according to an empirical value, and thus the calculated pretightening force may deviate; or the force sensor is used for testing, but the force sensor has complex structure, complex operation and limited use scene.
Therefore, a measuring device is needed to conveniently and accurately determine the pretightening force generated by the screw in practical application.
Disclosure of Invention
The embodiment of the utility model aims to provide a measuring device which is simple in structure and can conveniently and accurately detect the pretightening force of a screw.
In order to solve the above technical problem, an embodiment of the present application provides a pretightening force measurement device, including:
a support assembly;
the fixing piece is connected to the supporting component and is provided with a mounting part which is arranged opposite to the supporting component and used for placing a test piece and allowing a threaded part of the test piece to penetrate out;
a measuring unit located below the mounting portion, the measuring unit including a force sensor and a connecting member connected to each other, one end of the force sensor being connected to the supporting member, the other end being threadably connected to the threaded portion through the connecting member;
when the threaded portion is connected to the force sensor based on a preset torsion force, the measuring unit can determine the pretightening force generated by the test piece through the force sensor.
In some embodiments, the fixing member has an inverted U shape, an opening portion thereof is connected to the supporting member, and the mounting portion is provided on a side opposite to the opening portion.
In some embodiments, the mounting portion is configured as a submerged through hole having a diameter of 2.6mm.
In some embodiments, the connector is configured as a plurality of screw mounts having different apertures, the screw mounts being removably connected to the other end of the force sensor; the head of the screw rod seat is provided with an internal thread, so that the screw rod seat is connected with the threaded part of the test piece through the internal thread.
In some embodiments, where the test piece is a screw, the different apertures of the screw mount are configured to match the screws of specifications M1.6, M2.0, M2.5.
In some embodiments, the measurement unit further comprises a load cell display electrically connected to the force sensor for displaying the magnitude of the preload force.
In some embodiments, the support assembly includes a base plate-shaped for mounting the mount and the force sensor.
In some embodiments, the support assembly further comprises a foot pad disposed on the bottom of the base.
In some embodiments, the base is provided with a mounting slot, the mounting slot being provided with a mounting hole; one end of the force sensor is arranged in the mounting groove and is fixed through bolt connection based on the mounting hole.
The embodiment of the application also provides a pretightening force measurement tool, which comprises the pretightening force measurement device according to any embodiment, and further comprises a digital display torsion screwdriver, wherein the digital display torsion screwdriver is used for providing torsion to screw up a test piece, and the pretightening force measurement device can determine pretightening force generated when the test piece receives the torsion through a force sensor.
Based on the disclosure of the above embodiments, it can be known that the beneficial effects of the embodiments of the present application include: the pretightening force measuring device of this embodiment lays the test piece through the mounting to utilize the connecting piece of measuring element to carry out threaded connection with the screw portion of test piece, thereby measuring element can be through the pretightning force that the force transducer measurement test piece produced under torsion, and overall structure is simple, easily equipment and use, and user experience is good.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims thereof as well as the appended drawings.
The technical scheme of the present application is described in further detail below through the accompanying drawings and examples.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate the application and together with the embodiments of the application, and not constitute a limitation to the application. In the drawings:
fig. 1 is a schematic structural diagram of a pretension force measurement device in an embodiment of the present application;
FIG. 2 is a cross-sectional view taken along the direction A-A in FIG. 1;
fig. 3 is another schematic structural diagram of a pretension measurement device in an embodiment of the present application.
Reference numerals:
100-a support assembly; 110-a base; 111-mounting slots; 111 a-mounting holes; 120-foot pads; 200-fixing parts; 210-a mounting portion; 300-measuring unit; 310-force sensor; 320-connecting piece; 330 a load cell display; 400-test piece; 410-a threaded portion; 500-digital display torque screwdriver.
Detailed Description
Hereinafter, specific embodiments of the present application will be described in detail with reference to the accompanying drawings, but not limiting the present application.
It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the following description should not be taken as limiting, but merely as exemplification of the embodiments. Other modifications within the scope and spirit of this disclosure will occur to persons of ordinary skill in the art.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.
These and other characteristics of the present application will become apparent from the following description of a preferred form of embodiment, given as a non-limiting example, with reference to the accompanying drawings.
It is also to be understood that, although the present application has been described with reference to some specific examples, a person skilled in the art will certainly be able to achieve many other equivalent forms of the present application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.
The above and other aspects, features and advantages of the present disclosure will become more apparent in light of the following detailed description when taken in conjunction with the accompanying drawings.
Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure, which may be embodied in various forms. Well-known and/or repeated functions and constructions are not described in detail to avoid obscuring the disclosure in unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not intended to be limiting, but merely serve as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.
The specification may use the word "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1-3, the embodiment of the present application provides a pretightening force measuring device for testing pretightening force generated by a test piece 400 having a threaded portion 410, such as a screw, under torsion. The pretightening force measuring device includes:
the support assembly 100 is used for supporting other components of the pretightening force measuring device.
The fixing member 200 is used for fixing the test piece 400. The fixing member 200 is disposed at an upper portion of the support assembly 100 and is connected to the support assembly 100 to support. The fixing member 200 has a mounting portion 210 disposed opposite to the supporting member 100, and the mounting portion 210 is used for receiving the test piece 400 and allowing the threaded portion 410 of the test piece 400 to pass through.
The measuring unit 300 is used for connecting the threaded part 410 of the test piece 400, and forming threaded connection with the test piece 400 so as to be capable of detecting the pretightening force generated by the test piece 400 under the condition that the test piece 400 is subjected to torsion. The measuring unit 300 is connected to the supporting member 100 and correspondingly disposed under the mounting portion 210, so as to be fixed by the supporting member 100 and connected to the threaded portion 410 of the test piece 400. Specifically, the measuring unit 300 includes a force sensor 310 and a connecting member connected to each other, one end of the force sensor 310 is connected to the support assembly 100 to be fixed to the support assembly 100, and the other end can be screwed to the threaded portion 410 through the connecting member. In the case that the test piece 400 receives a preset torsion, the screw part 410 transmits a force to the force sensor 310 through screw connection based on the preset torsion, so that the measuring unit 300 can determine a pre-tightening force generated when the test piece 400 receives the preset torsion through the force sensor 310.
Based on the disclosure of the above embodiment, it can be known that the test piece 400 is placed by the fixing piece 200 and the connecting piece of the measuring unit 300 is in threaded connection with the threaded portion 410 of the test piece 400, so that the measuring unit 300 can measure the pretightening force generated by the test piece 400 under the preset torsion force through the force sensor 310, and the device has simple overall structure, is easy to assemble and use, and has good user experience.
In some embodiments, the fixing member 200 has a substantially inverted U shape, and an opening at the bottom thereof is connected to the support assembly 100 for fixing; the mounting portion 210 is provided at a side opposite to the opening portion, so that the test piece 400 is placed by the mounting portion 210, and the test piece 400 is prevented from shaking during the tightening process.
In some embodiments, the mounting portion 210 is configured as a submerged through hole having a diameter of 2.6mm. In some specific applications, the countersink may be drilled on top of the fixture opposite the base during machining. In this embodiment, the sinking portion of the sinking through hole is used to hold the head of the test piece 400, such as a screw, and the size of the sinking portion can be designed according to the head size of the screw; the diameter of the through hole was set to 2.6mm so that the screw portion 410 of the test piece 400 could be penetrated out of the through hole.
In some embodiments, the connector 320 is configured as a plurality of screw seats having different diameters, the screw seats being internally provided with internal threads, so that the measuring unit 300 can be connected with the screw portions 410 of the respective diameters through the screw seats of different inner diameters. The screw seat is detachably connected to the other end of the force sensor 310 to replace the corresponding screw seat according to the size of the test piece 400 actually measured.
In some embodiments, where the test piece 400 is a screw, the different apertures of the screw mount are configured to mate with screws of specifications M1.6, M2.0, M2.5. In the embodiment of the application, considering that electronic devices such as notebooks are usually locked by screws with the specifications of M1.6 to M2.5, the aperture of the screw rod seat is configured to be matched with the screws with the specifications of M1.6, M2.0 and M2.5, so that the pretightening force measuring device can detect and determine pretightening force of common screws.
In some embodiments, the measurement unit 300 further comprises a load cell display 330, the load cell display 330 being electrically connected to the force sensor 310. In this embodiment, the load cell display 330 displays the acting force received by the force sensor 310, specifically, when the force sensor 310 is acted on by the pretightening force transmitted by the threaded portion 410 through the threaded connection, the measuring unit 300 can display the value of the pretightening force through the load cell display 330.
In some embodiments, the support assembly 100 includes a base 110, the base 110 being plate-shaped for mounting and supporting the fixture 200 and the force sensor 310, and a particular size may be provided in conjunction with the mounting dimensions of the fixture 200 and the force sensor 310.
In some embodiments, the support assembly 100 further includes a foot pad 120 disposed at the bottom of the base 110, where the foot pad 120 is used to support the base 110, and the shape and size of the foot pad may be set according to actual needs, which is not limited herein.
In some embodiments, the base 110 is provided with a mounting slot 111, and one end of the force sensor 310 is disposed in the mounting slot 111, and the mounting slot 111 is sized to accommodate the sensor by adapting the size of the end of the force sensor 310 for mounting. The mounting groove 111 is provided with a mounting hole 111a, and the size of the mounting hole 111a is adapted to the size of the bolt for connection, so that the bolt can fix the force sensor 310 through the mounting hole 111 a. In some practical applications, an internal thread is provided at one end of the force sensor 310, when the force sensor 310 is placed in the mounting groove 111, the threaded hole of the force sensor 310 is kept to correspond to the mounting hole 111a, then a bolt matched with the internal thread is selected, and the threaded end of the bolt is used to pass through the mounting hole 111a and be connected with the internal thread in a matching manner, so that the force sensor 310 is fixed on the base 110, and the force sensor 310 is convenient to measure the torsion force received.
The embodiment of the application also provides a pretightening force measurement tool, which comprises the pretightening force measurement device and further comprises a digital display torsion screwdriver 500, wherein the digital display torsion screwdriver 500 is used for providing preset torsion according to actual conditions or needs so as to screw up the test piece 400 through the preset torsion, so that the pretightening force measurement device can determine pretightening force generated by the test piece 400 when the test piece 400 receives the preset torsion through the force sensor 310.
The above embodiments are only exemplary embodiments of the present application and are not intended to limit the present application, the scope of which is defined by the claims. Various modifications and equivalent arrangements may be made to the present application by those skilled in the art, which modifications and equivalents are also considered to be within the scope of the present application.
Claims (10)
1. A pretension measuring device, comprising:
a support assembly;
the fixing piece is connected to the supporting component and is provided with a mounting part which is arranged opposite to the supporting component and used for placing a test piece and allowing a threaded part of the test piece to penetrate out;
a measuring unit located below the mounting portion, the measuring unit including a force sensor and a connecting member connected to each other, one end of the force sensor being connected to the supporting member, the other end being threadably connected to the threaded portion through the connecting member;
when the threaded portion is connected to the force sensor based on a preset torsion force, the measuring unit can determine the pretightening force generated by the test piece through the force sensor.
2. The pretightening force measuring apparatus according to claim 1, wherein the fixing member has an inverted U shape, an opening portion thereof is connected to the support member, and the mounting portion is provided on a side opposite to the opening portion.
3. The pretension measurement apparatus according to claim 2, wherein the mounting portion is configured as a sunk through hole having a diameter of 2.6mm.
4. The pretightening force measurement device according to claim 1, wherein the connecting member is configured as a plurality of screw bases having different apertures, the screw bases being detachably connected to the other end of the force sensor; the head of the screw rod seat is provided with an internal thread, so that the screw rod seat is connected with the threaded part of the test piece through the internal thread.
5. The pretension measurement apparatus according to claim 4, wherein in the case where the test piece is a screw, different apertures of the screw base are configured to match the screws of specifications M1.6, M2.0, M2.5.
6. The pretension measurement apparatus of claim 4, wherein the measurement unit further comprises a load cell display electrically connected to the force sensor for displaying the value of the pretension.
7. The pretension measurement apparatus of any one of claims 1-6, wherein the support assembly includes a base that is plate-shaped for mounting the mount and the force sensor.
8. The pretension measurement apparatus of claim 7 wherein the support assembly further includes a foot pad disposed on the bottom of the base.
9. The pretightening force measurement device according to claim 7, wherein the base is provided with a mounting groove provided with a mounting hole; one end of the force sensor is arranged in the mounting groove and is fixed through bolt connection based on the mounting hole.
10. The pretightening force measurement tool is characterized by comprising the pretightening force measurement device according to any one of claims 1-9, and further comprising a digital display torque screwdriver, wherein the digital display torque screwdriver is used for providing torque force to screw a test piece, and the pretightening force measurement device can determine pretightening force generated when the test piece is subjected to the torque force through a force sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321759460.3U CN220525194U (en) | 2023-07-05 | 2023-07-05 | Pretightening force measuring device and pretightening force measuring tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321759460.3U CN220525194U (en) | 2023-07-05 | 2023-07-05 | Pretightening force measuring device and pretightening force measuring tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220525194U true CN220525194U (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321759460.3U Active CN220525194U (en) | 2023-07-05 | 2023-07-05 | Pretightening force measuring device and pretightening force measuring tool |
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| Country | Link |
|---|---|
| CN (1) | CN220525194U (en) |
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2023
- 2023-07-05 CN CN202321759460.3U patent/CN220525194U/en active Active
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