CN110857714A - Fastening assembly with visual pretightening force and heat radiator with fastening assembly - Google Patents
Fastening assembly with visual pretightening force and heat radiator with fastening assembly Download PDFInfo
- Publication number
- CN110857714A CN110857714A CN201810961393.0A CN201810961393A CN110857714A CN 110857714 A CN110857714 A CN 110857714A CN 201810961393 A CN201810961393 A CN 201810961393A CN 110857714 A CN110857714 A CN 110857714A
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- CN
- China
- Prior art keywords
- fastening assembly
- head
- fixing hole
- fixing
- pretightening
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000000007 visual effect Effects 0.000 title abstract description 9
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 239000003086 colorant Substances 0.000 claims description 6
- 238000012800 visualization Methods 0.000 claims description 4
- 230000036316 preload Effects 0.000 description 14
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
- F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
Abstract
The invention provides a fastening assembly with visual pretightening force, which comprises a pretightening part and a pretightening spring, wherein the pretightening part comprises a head part and a rod part, the head part is provided with a mark, the rod part is provided with a thread, one end of the pretightening spring is abutted against the head part, the other end of the pretightening spring is abutted against a first sleeve part, the first sleeve part is provided with a first fixing hole, the size of the first fixing hole is larger than that of the rod part and smaller than that of the head part, a plurality of color bands are arranged around the first fixing hole, the rod part sequentially penetrates through and extends out of the pretightening spring and the first fixed hole, and is screwed into the fixing part so as to fix the fixing part on the fixing part, and the color bands.
Description
Technical Field
The invention relates to a fastening assembly, in particular to a fastening assembly structure with visual pretightening force.
Background
Fasteners (e.g., threaded bolts, pre-stressed springs, etc. workpieces) have found numerous applications in the mechanical industry. At present, the common fastener connection installation is that a spring cushion is sleeved on a fastener, a flat cushion penetrates through a fixed part, and the spring cushion is fixed at other positions needing to be fixed, such as the fixed part after being flattened. The pressing force of the fastening piece is mainly controlled by human senses, particularly under the condition that a plurality of fastening pieces are fixed, the pretightening force of each fastening piece cannot be controlled uniformly, so that the stress and the strain of the fixing piece of each fastening piece are different, and even the fixed piece moves or deforms.
The pretension force can now be controlled using special tools, such as force measuring wrenches, torque wrenches, etc. These pretension control tools are based on the control of a friction torque, which is not directly related to the pressing force of the fastener connection, i.e. the pretension, which is a positive pressure that ensures that no gap and relative movement occurs between the coupling part and the coupled part. Therefore, the pre-tightening force is quantitatively controlled to ensure the connection effect, so that gaps or relative movement after connection can be avoided, and over-tight connection can be avoided, so that the connection piece and the connected piece are deformed to influence the connection effect.
In addition, some fasteners which adjust the pretightening force through a metering scale compressed by a spring have complex structures, usually need to be assisted by additionally arranging a clamping piece and the like, and cannot intuitively display the pretightening force.
Disclosure of Invention
In view of this, it is necessary to design and develop a fastening assembly with visual pretightening force, which has a simple structure and can visually reflect the pretightening force.
The utility model provides a visual fastening assembly of pretightning force, includes pretensioning piece, pretensioning spring and first external member, the pretensioning piece includes a head and a pole portion, the head is equipped with an indicator, be equipped with the external screw thread in the pole portion. The pre-tightening spring is sleeved on the rod part, and one end of the pre-tightening spring is abutted against the head part. The first sleeve part is provided with a first fixing hole, the size of the first fixing hole is larger than that of the rod part and smaller than that of the head part, a plurality of color bands are arranged around the first fixing hole, when the rod part penetrates through the first sleeve part and is screwed into a fixing part, the other end of the pre-tightening spring abuts against the first sleeve part, and the color bands are matched with the indicating marks and used for indicating the size of pre-tightening force generated between the rod part and the fixing part.
Further, the part of the rod part, which is far away from the head part, is provided with an external thread, and the rod part is close to the head part and is not provided with a thread.
Further, the stem portion includes a first portion and a second portion; the fastening assembly further comprises a supporting sheet, one end of the first portion is connected with the head, the other end of the first portion is connected with the second portion, the first portion is unthreaded, and external threads are arranged on the second portion. A circle of groove is formed in the position, far away from the head, of the first portion, and the groove is used for being clamped into the supporting sheet. The support sheet is used for supporting the sleeve; the second portion cooperates with the fixture to secure the sleeve.
Furthermore, the size of the first part is larger than that of the second part, the second part penetrates through a circuit board before extending into the fixing piece, the circuit board is provided with a second fixing hole, the size of the second fixing hole is smaller than that of the first part and larger than that of the second part, and the second part penetrates through the second fixing hole, is screwed into the fixing piece and clamps the circuit board between the first part and the fixing piece.
Further, the head portion is cylindrical or hexahedral, and the first fixing hole and the second fixing hole are circular.
Further, the threads are right-hand threads.
Further, the color band is an arc-shaped color ring concentric with the first fixing hole, the arc-shaped color ring is uniformly divided into a plurality of parts with the same area, each part is provided with at least two colors, and the colors of each part are gradually deepened around the clockwise direction.
Furthermore, the head is cylindrical, a circular hollowed part is formed in one surface, away from the rod, of the cylindrical head, the hollowed part is provided with a bottom surface, a slot or a hexagonal groove is formed in the bottom surface, and the slot and the hexagonal groove are used for being matched with a screwdriver.
A radiator comprises a radiator main body and a plurality of fastening assemblies with visualized pretightening force, wherein the radiator main body comprises an installation base and a plurality of radiating fins arranged on the installation base, and the external members of the fastening assemblies are detachably fixed on the installation base.
The fastening assembly with the visual pretightening force, provided by the invention, is simple in structure and convenient to assemble, can substantially reflect the pretightening force, is beneficial to installing the fastening assemblies with the same pretightening force, and has good practical value.
Drawings
Fig. 1 is a schematic structural diagram of a fastening assembly with visualized pretension force according to an embodiment of the present invention.
FIG. 2 is an enlarged partial view of the visualized pretension fastening assembly shown in FIG. 1.
Fig. 3 is a schematic view of a pretensioning screw of the pretensioning visual fastening assembly shown in fig. 1.
Fig. 4 is a schematic view of a heat sink having the fastening assembly shown in fig. 1 with a visualization of pretension.
Description of the main elements
The following detailed description of the invention will be further described in conjunction with the above description of the drawings.
Detailed Description
The technical solution of the present invention will be clearly and completely described with reference to the accompanying fig. 1-4 of the specific embodiments. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
A fastening assembly 100 with visualized pretension force is shown in fig. 1-2, wherein the fastening assembly 100 comprises a pretension member 10, a pretension spring 20 and a sleeve member 30. The preload member 10 is used to fix the sleeve 30 to the fixing member 60 by the preload spring 20.
The preload member 10 may be a screw, a bolt, a stud, a screw, etc., and the preload member 10 is a screw in this embodiment. The preload member 10 includes a head portion 101 and a shaft portion 102 fixed to the head portion 101, the head portion 101 is provided with an indication mark 1010, the shaft portion 102 is provided with an external thread 103, and correspondingly, the fixing member 60 is provided with an internal thread (not shown) matching with the external thread. The pre-tightening spring 20 is sleeved on the rod part 102, and one end of the pre-tightening spring 20 abuts against the head part 101. The sleeve 30 is provided with a first fixing hole 301, the size of the first fixing hole 301 is larger than that of the rod portion 102 and smaller than that of the head portion 101, and a plurality of color bands 302 are arranged around the first fixing hole 301. The rod 102 passes through and extends out of the pre-tightening spring 20 and the first fixing hole 301, and is screwed into the fixing member 60 through the matching of the external thread 103 and the internal thread, so as to fix the sleeve 30 on the fixing member 60. At this time, the other end of the pre-tightening spring 20 away from the head 101 abuts against the sleeve 30, the pre-tightening spring 20 compresses, and at the same time, an acting force pushing the sleeve 30 is generated downwards, and the magnitude of the acting force is proportional to the degree of compression of the pre-tightening spring 20 or the number of rotation turns of the pre-tightening member 10. The color band 302 cooperates with the indication mark 1010 to indicate the pre-tightening force generated between the rod portion 102 and the fixing member 60 along the axial line of the rod portion 102.
Preferably, the external thread 103 is located only on the side of the shank 102 remote from the head 101.
Preferably, as shown in fig. 3, the rod portion 102 includes a first portion 1020 and a second portion 1021, and one end of the first portion 1020 is connected to the head portion 101, and the other end is connected to the second portion 1021. The external threads 103 are located on the second portion 1021, while the first portion 1020 is devoid of external threads. The first portion 1020 is provided with a ring of grooves 1022 near the end remote from the head 101. The fastening assembly 100 further includes a support tab 40, the support tab 40 configured to snap into the recess 1022 to support the first sleeve 30. The second portion 1021 cooperates with the fastener 60 to secure the sleeve 30.
Preferably, the first portion 1020 is larger than the second portion 1021, and a circuit board 50 is further disposed between the sleeve 30 and the fixing member 60. The second portion 1021 passes through the sleeve 30 and the circuit board 50 in sequence, and the sleeve 30 and the circuit board 50 are fixed through the matching of the external thread of the second portion 1021 and the internal thread of the fixing member 60. The circuit board 50 is provided with a second fixing hole 501, and the size of the second fixing hole 501 is smaller than that of the first part 1020 and is slightly larger than that of the second part 1021, so that the first part 1020 cannot pass through the second fixing hole 501, and the second part 1021 can pass through the second fixing hole 501. The second portion 1021 passes through the second fixing hole 501, and is screwed into the fixing member 60 by the external thread of the second portion 1021 matching with the internal thread of the fixing member 60, so as to clamp the circuit board 50 between the first portion 1020 and the fixing member 60.
Preferably, the first portion 1020 and the second portion 1021 are both cylindrical, the head 101 is cylindrical or hexahedral, and the first fixing hole 301 and the second fixing hole 501 are circular.
Preferably, the thread 103 is a right-hand thread.
Preferably, the color band 302 is a circular arc-shaped color ring concentric with the first fixing hole 301, the circular arc-shaped color ring is uniformly divided into a plurality of portions with the same area, each portion is coated with at least two colors, and the colors of each portion gradually change, such as gradually deepen, around the clockwise direction. By measuring the relationship between the number of screwing turns of the preload element 10 and the magnitude of the preload along the axial line of the rod 102 in advance, the range of the preload magnitude is mapped to different color bands 302.
Preferably, the head 101 is cylindrical, and a circular hollow 1011 is formed on a side of the cylindrical shape away from the shaft 102, the hollow has a bottom 1012, the bottom 1012 is provided with a slot 1013 or a hexagonal recess 1014, and the slot 1013 and the hexagonal recess 1014 are used for matching a screwdriver with corresponding shapes. In this embodiment, the bottom surface 1012 can include both the slot 1013 and a hexagonal recess 1014, the hexagonal recess 1014 being located approximately in the middle of the slot 1013, and two opposite corners of the hexagonal recess 1014 being aligned with the slot 1013.
Preferably, as shown in fig. 4, a heat sink 200 according to a preferred embodiment of the present invention includes a heat sink main body 201 and a plurality of fastening assemblies 100. The heat sink body 201 includes a mounting base 202 and a plurality of heat dissipating fins mounted on the mounting base 202. The first sleeve 30 of the fastening assembly 100 is detachably fixed on the mounting base 202, and the first sleeve 30 cooperates with the fastening assembly 100 to fix the heat sink 200 on the fixing member 60.
In practical applications, the fixing member 60 may be a housing of a terminal device (e.g., a server) for mounting the heat sink, and the circuit board 50 may be a motherboard of the terminal device (e.g., a computer).
In the fastening assembly 100 with visualized pretightening force provided by this embodiment, when in specific use, the pretightening member 10 sequentially passes through the pretightening spring 20, the first fixing hole 301, the supporting plate 40, the second fixing hole 501 and the fixing member 60. A screwdriver is then used to extend into slot 1013 or hexagonal recess 1014, preload 10 is rotated clockwise to screw preload 10 into anchor 60 while noting the number of rotations of preload 10, and finally the color bar 302 indicated by indicator 1010 of head 101 is observed, the magnitude of the preload is approximated by the number of rotations of preload 10 and the color bar indicated by indicator 1010, and the next fastener assembly 100 is installed to be substantially the same as the preload of the previous fastener assembly 100 by the installation process that rotates the same number of rotations and has indicator 1010 indicate the same color in the same color bar 302.
The visual fastening assembly of pretightning force that this embodiment provided, simple structure and equipment are simple and convenient, can roughly reflect the size of pretightning force simultaneously, help installing the fastening assembly that the pretightning force size is unanimous, have fine practical value.
In addition, those skilled in the art should recognize that the foregoing embodiments are illustrative only, and not limiting, and that appropriate changes and modifications can be made without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A fastening assembly with visualized pretightening force comprises a pretightening piece, a pretightening spring and a first external member, wherein the pretightening piece comprises a head part and a rod part, the head part is provided with an indication mark, and the rod part is provided with external threads; the pre-tightening spring is sleeved on the rod part, and one end of the pre-tightening spring is abutted against the head part; the first sleeve part is provided with a first fixing hole, the size of the first fixing hole is larger than that of the rod part and smaller than that of the head part, a plurality of color bands are arranged around the first fixing hole, when the rod part penetrates through the first sleeve part and is screwed into a fixing part, the other end of the pre-tightening spring abuts against the first sleeve part, and the color bands are matched with the indicating marks and used for indicating the size of pre-tightening force generated between the rod part and the fixing part.
2. The pretension-visualized fastening assembly according to claim 1, wherein the stem is externally threaded in a region of the stem remote from the head, and the stem is not threaded near the head.
3. The pretension-visible fastening assembly of claim 2, wherein the stem portion comprises a first portion and a second portion; the fastening assembly further comprises a supporting sheet, one end of the first part is connected with the head, the other end of the first part is connected with the second part, the first part is unthreaded, and the second part is provided with external threads; a circle of grooves are formed in the first part, far away from the head, and are used for being clamped into the supporting sheet; the support sheet is used for supporting the sleeve; the second portion cooperates with the fixture to secure the sleeve.
4. The pretension visualization fastening assembly of claim 3, wherein the first portion is larger in size than the second portion, the second portion passes through a circuit board before extending into the fixing member, the circuit board is provided with a second fixing hole, the size of the second fixing hole is smaller than that of the first portion and larger than that of the second portion, and the second portion passes through the second fixing hole and is screwed into the fixing member to clamp the circuit board between the first portion and the fixing member.
5. The pretension visualization fastening assembly of claim 4, wherein the head portion is cylindrical or hexahedral, and the first fixing hole and the second fixing hole are circular.
6. The pretension visualization fastening assembly of claim 1, wherein the threads are right-handed threads.
7. The pretension-visible fastening assembly of claim 1, wherein the color band is a circular arc-shaped color ring concentric with the first fixing hole, the circular arc-shaped color ring is uniformly divided into a plurality of parts with the same area, each part is provided with at least two colors, and the colors of each part are gradually changed around the clockwise direction respectively.
8. The fastening assembly for visualizing pre-tightening force of claim 1, wherein the head is cylindrical, a circular hollow is formed on a side of the cylindrical body away from the shaft, the hollow has a bottom surface, the bottom surface is provided with a slot or a hexagonal recess, and the slot and the hexagonal recess are adapted to match a screwdriver.
9. A heat sink comprising a heat sink body and a plurality of fastening assemblies according to any one of claims 1 to 8, wherein the fastening assemblies comprise a mounting base and a plurality of heat dissipating fins mounted on the mounting base, and the fastening assemblies are detachably fixed to the mounting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961393.0A CN110857714A (en) | 2018-08-22 | 2018-08-22 | Fastening assembly with visual pretightening force and heat radiator with fastening assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810961393.0A CN110857714A (en) | 2018-08-22 | 2018-08-22 | Fastening assembly with visual pretightening force and heat radiator with fastening assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110857714A true CN110857714A (en) | 2020-03-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810961393.0A Pending CN110857714A (en) | 2018-08-22 | 2018-08-22 | Fastening assembly with visual pretightening force and heat radiator with fastening assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110857714A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3248923A (en) * | 1962-12-26 | 1966-05-03 | Richard H Blakeley | Method of calibrating tension indicating bolt |
| US3602186A (en) * | 1970-08-06 | 1971-08-31 | Charles H Popenoe | Opti-mechanical stress-strain indicator |
| CN1550682A (en) * | 2003-02-10 | 2004-12-01 | 索斯科公司 | Floating captive screw |
| CN2681328Y (en) * | 2003-12-11 | 2005-02-23 | 鸿富锦精密工业（深圳）有限公司 | Fastener of radiator |
| TW200738101A (en) * | 2006-03-17 | 2007-10-01 | Foxconn Tech Co Ltd | Heat sink retaining device |
| CN204284149U (en) * | 2014-11-26 | 2015-04-22 | 深圳市邦彦信息技术有限公司 | A kind of hexangle type regulates fastening piece and composite structure thereof |
| CN205074946U (en) * | 2015-09-18 | 2016-03-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Pressing board assembly |
| CN205478814U (en) * | 2016-01-12 | 2016-08-17 | 舍弗勒技术股份两合公司 | Lock nut subassembly that can volume of adjusting pretension |
| CN207195405U (en) * | 2017-06-08 | 2018-04-06 | 郑州航天电子技术有限公司 | A kind of easy screw attachment structure for quantifying pretightning force |
| CN108431434A (en) * | 2015-10-26 | 2018-08-21 | 利西太空加拿大公司 | Indicator and its component |
-
2018
- 2018-08-22 CN CN201810961393.0A patent/CN110857714A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3248923A (en) * | 1962-12-26 | 1966-05-03 | Richard H Blakeley | Method of calibrating tension indicating bolt |
| US3602186A (en) * | 1970-08-06 | 1971-08-31 | Charles H Popenoe | Opti-mechanical stress-strain indicator |
| CN1550682A (en) * | 2003-02-10 | 2004-12-01 | 索斯科公司 | Floating captive screw |
| CN2681328Y (en) * | 2003-12-11 | 2005-02-23 | 鸿富锦精密工业（深圳）有限公司 | Fastener of radiator |
| TW200738101A (en) * | 2006-03-17 | 2007-10-01 | Foxconn Tech Co Ltd | Heat sink retaining device |
| CN204284149U (en) * | 2014-11-26 | 2015-04-22 | 深圳市邦彦信息技术有限公司 | A kind of hexangle type regulates fastening piece and composite structure thereof |
| CN205074946U (en) * | 2015-09-18 | 2016-03-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Pressing board assembly |
| CN108431434A (en) * | 2015-10-26 | 2018-08-21 | 利西太空加拿大公司 | Indicator and its component |
| CN205478814U (en) * | 2016-01-12 | 2016-08-17 | 舍弗勒技术股份两合公司 | Lock nut subassembly that can volume of adjusting pretension |
| CN207195405U (en) * | 2017-06-08 | 2018-04-06 | 郑州航天电子技术有限公司 | A kind of easy screw attachment structure for quantifying pretightning force |
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Application publication date: 20200303 |