CN112911879A - Locking strip with self-locking function and processing method thereof - Google Patents
Locking strip with self-locking function and processing method thereof Download PDFInfo
- Publication number
- CN112911879A CN112911879A CN202011590387.2A CN202011590387A CN112911879A CN 112911879 A CN112911879 A CN 112911879A CN 202011590387 A CN202011590387 A CN 202011590387A CN 112911879 A CN112911879 A CN 112911879A
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- strip
- locking strip
- binding
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- 238000003672 processing method Methods 0.000 title claims description 12
- 230000002787 reinforcement Effects 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 13
- 238000003801 milling Methods 0.000 claims description 12
- 238000010079 rubber tapping Methods 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000004321 preservation Methods 0.000 claims description 9
- 238000003754 machining Methods 0.000 claims description 8
- 238000002161 passivation Methods 0.000 claims description 6
- 238000010791 quenching Methods 0.000 claims description 5
- 230000000171 quenching effect Effects 0.000 claims description 5
- 238000005496 tempering Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 230000003014 reinforcing effect Effects 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/14—Mounting supporting structure in casing or on frame or rack
- H05K7/1401—Mounting supporting structure in casing or on frame or rack comprising clamping or extracting means
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The scheme discloses a locking strip with a self-locking function, which belongs to the field of locking devices and comprises a locking strip and a locking wedge block connected to one end of the locking strip through a screw, wherein the surfaces of the locking wedge block and the locking strip, which are attached to each other, are inclined surfaces, a through groove is formed in the length direction of the locking strip, and the tops of two ends of the through groove are sealed to form connecting holes at two ends of the through groove; the terminal surface of the other end of locking bar also is the inclined plane, can dismantle and be connected with the auto-lock voussoir, and the auto-lock voussoir includes the same reinforcement portion of outside form and locking voussoir structure and the cylindrical binding off portion of cavity, and the binding off shape of binding off portion is oval, reinforcement portion and binding off portion fixed connection and intercommunication, the screw stretches out logical groove and threaded connection reinforcement portion and binding off portion in proper order. According to the scheme, the screw is not easy to loosen and fall off after installation, the shockproof function is achieved, and the quality of the installed product is stable.
Description
Technical Field
The invention relates to the field of locking devices, in particular to a locking strip with a self-locking function and a processing method thereof.
Background
In the installation process of electronic equipment circuit boards (hereinafter referred to as printed boards) in the industries of aviation, aerospace, ships, civil aviation, military aircrafts and the like, the locking strip is an indispensable common accessory in electronic integrated circuit modular design, is installed at the edge of the printed board, and is used for pressing the distance between the board and the guide rail by changing the thickness of the locking strip through pressure, and the daughter board and the mother board form firm connection, so that the locking strip is convenient to install and detach quickly, has good grounding performance and environmental adaptability, and is widely applied to the industries of aviation, aerospace, ships, civil aviation, military aircrafts and the like.
The traditional locking strip comprises a locking strip, one end of the locking strip is connected with a locking wedge through a screw, and the surfaces of the locking wedge and the locking strip which are attached to each other are inclined surfaces; a through groove is formed in the locking bar along the length direction of the shorter side of the locking bar, the through groove is a full groove, namely the top of the through groove is not provided with a sealing part, the screw is inserted into the through groove along the length direction of the through groove and penetrates through the whole through groove, the end, far away from the locking wedge block, of the screw is fixed by a nut, and in addition, the locking bar and the locking wedge block are made of aluminum alloy. However, the locking strip with the structure and the material has poor shockproof performance, and the locking function of the nut is easy to lose efficacy after frequent vibration, so that the problems of looseness and falling off among all parts are easy to occur in the use process.
Disclosure of Invention
The invention aims to provide a locking strip with a self-locking function, and aims to solve the problems that the existing locking strip is poor in anti-vibration performance and is easy to loosen and fall off in the using process.
The locking strip with the self-locking function comprises a locking strip and a locking wedge block connected to one end of the locking strip through a screw, wherein the surfaces, attached to each other, of the locking wedge block and the locking strip are inclined surfaces, a through groove is formed in the length direction of the locking strip, and the tops of two ends of the through groove are sealed to form connecting holes at two ends of the through groove; the terminal surface of the other end of locking bar also is the inclined plane, can dismantle and be connected with the auto-lock voussoir, and the auto-lock voussoir includes the same reinforcement portion of outside form and locking voussoir structure and the cylindrical binding off portion of cavity, and the binding off shape of binding off portion is oval, reinforcement portion and binding off portion fixed connection and intercommunication, the screw stretches out logical groove and threaded connection reinforcement portion and binding off portion in proper order.
The working principle of the scheme is as follows: this scheme has increased the auto-lock voussoir, and under the same condition of holding strip length, the longer screw of this scheme of implementation will be cooperated, and the screw passes from the locking voussoir of holding strip one end, and the auto-lock voussoir of the holding strip other end is then connected to logical groove on passing the holding strip, has increased the firm degree that screw and holding strip are connected.
The screw is in threaded connection with the reinforcing part and the closing-in part, namely the reinforcing part and the closing-in part are provided with threaded through holes, the closing-in shape of the closing-in part is oval, namely the threaded through hole of the closing-in part is an oval threaded through hole, threads of the closing-in part are mutually meshed and locked with the threads on the screw, and the threads of the closing-in part are extruded and deformed due to the fact that the closing-in part is an oval closing-in part, so that the screw is locked when the threads on the screw pass through the extruded and deformed threads of the locking part, and the screw cannot fall off.
Compare in traditional nut fixed, this scheme has following beneficial technological effect:
1. the installation is simple and easy, convenient, swift, easily installs, dismantles, and the portion of consolidating is the same with the outside form of locking voussoir moreover, and the contact surface between portion of consolidating and the locking strip also is the inclined plane promptly, compares in the plane contact, is difficult to fish tail contact site when dismantling conveniently and dismantling.
2. The connecting torque between the printed board and the electronic equipment can be effectively controlled through the adjusting screw.
3. The screw is difficult for becoming flexible after the installation, drops, has shockproof function, and the product quality is stable after the installation.
Further, the orientation of the inclined plane at the two ends of the locking bar is the same, and the through groove is positioned on one side with shorter length of the locking bar.
Furthermore, a plurality of mounting screw holes which are positioned on the same length direction of the lock strip are arranged on the lock strip. Through the installation screw, increase the tie point of locking bar and printing board for the locking bar is more firm reliable with being connected of printing board.
Furthermore, the installation screw hole has three, and the interval between the three installation screw hole is the same.
Furthermore, each component of the locking strip is made of stainless steel. The corrosion resistance of stainless steel is strong, can strengthen the security performance of locking strip.
Based on the locking strip with the self-locking function, the application also provides a processing method of the locking strip, which comprises the following steps:
machining method of self-locking wedge block
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread;
3) counting vehicles: turning a closing-up table according to a given size, and removing burrs after turning;
4) closing: closing up at two points, wherein the shape of the closing up is an ellipse; then carrying out surface passivation treatment;
second, machining method of locking wedge block
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread; then carrying out surface passivation treatment;
thirdly, the processing method of the locking bar comprises the following steps:
1) blanking according to the requirement of a given blank;
2) milling the reference, the shape, the inner cavity and the connecting hole according to the times, and then milling the shape again;
3) carrying out Fe/Ct.P surface treatment after the intermediate detection;
third, assemble
1) Collecting parts: preparing a screw, a locking bar, a locking wedge block and a self-locking wedge block;
2) assembling: the screw sequentially and spirally penetrates through the locking wedge block, the locking strip and the self-locking wedge block.
Further, in the first step and the second step, the heat treatment conditions are that the quenching temperature is 1010 +/-10 ℃, the heat preservation time is 70 +/-10 min, and oil cooling is adopted; tempering temperature is 600 plus or minus 10 ℃, heat preservation time is 90 plus or minus 10min, and water cooling is carried out.
Further, the heat treatment conditions are that the quenching temperature is 1010 +/-10 ℃, the heat preservation time is 70min, and oil cooling is adopted; tempering temperature is 600 +/-10 ℃, heat preservation time is 90min, and water cooling is carried out.
Further, during several cars, the fine machining closing-in table is positioned by a threaded mandrel, and the concentricity of the internal thread of the threaded mandrel and the closing-in table is 0.03 mm. Stability when being convenient for guarantee several cars improves the locking performance of gained locking strip.
Compared with the traditional process, the locking strip processed by the process has the advantages that the yield of the locking strip is high, the hardness of the locking wedge and the hardness of the self-locking wedge reach HB 241-341, and the stable performance of the product is ensured.
Drawings
FIG. 1 is a schematic structural view of a locking strip with a self-locking function according to the present invention;
fig. 2 is a schematic structural view of the self-locking wedge of fig. 1.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the locking device comprises a screw 1, a locking wedge 2, an installation screw hole 3, a locking strip 4, a self-locking wedge 5, a reinforcing part 501 and a closing-in part 502.
Example 1 is substantially as shown in figures 1 and 2 of the accompanying drawings: the utility model provides a take locking strip of self-locking function, includes screw 1, locking strip 4, is located the locking voussoir 2 of 4 one ends of locking strip and is located the self-locking voussoir 5 of the 4 other ends of locking strip, and locking voussoir 2 is for agreeing with the shape, and self-locking voussoir 5 is including the reinforcement portion 501 and the cylindrical binding off portion 502 that agree with the shape, and locking voussoir 2, reinforcement portion 501 and binding off portion 502 all seted up the screw thread through-hole, and the binding off shape of binding off portion 502 is oval, and the screw thread through-hole of binding off. The locking bar 4 is provided with three mounting screw holes 3 which are positioned in the same length direction, and the distances among the three mounting screw holes 3 are the same.
A through groove is formed in the length direction of the locking strip 4, and the tops of two ends of the through groove are sealed to form connecting holes at two ends of the through groove; the screw 1 connects the locking wedge 2, the locking strip 4 and the self-locking wedge 5 by screw thread. The surfaces of the locking wedge 2 and the reinforcing part 501, which are attached to the locking strip 4, are inclined surfaces. The inclined planes at the two ends of the locking bar 4 are in the same direction, and the through groove is positioned at the shorter side of the locking bar 4.
All materials are selected in the scheme (the martensitic stainless steel is 2Cr13, the technical conditions are GJB2294-1995), and the martensitic stainless steel has good comprehensive performance, corrosion resistance, high toughness and plasticity.
machining method of self-locking wedge block 5
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread;
3) counting vehicles: turning a closing-up table according to a given size, and removing burrs after turning; during several cars, a screw mandrel is used for positioning and finish machining the closing-up table, and the concentricity of the internal thread of the screw mandrel and the closing-up table is 0.03 mm;
4) closing: closing up at two points, wherein the shape of the closing up is an ellipse; then carrying out surface passivation treatment;
second, machining method of locking wedge 2
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread; then carrying out surface passivation treatment;
thirdly, the processing method of the locking bar 4 comprises the following steps:
1) blanking according to the requirement of a given blank;
2) milling the reference, the shape, the inner cavity and the connecting hole according to the times, and then milling the shape again;
3) carrying out Fe/Ct.P surface treatment after the intermediate detection;
third, assemble
1) Collecting parts: preparing a screw 1, a locking strip 4, a locking wedge 2 and a self-locking wedge 5;
2) assembling: the screw 1 sequentially and spirally penetrates through the locking wedge 2, the locking strip 4 and the self-locking wedge.
In the above process, the heat treatment conditions are: quenching temperature is 1010 +/-10 ℃, heat preservation time is 70 +/-10 min (preferably 70min), and oil cooling is adopted; tempering temperature is 600 + -10 deg.C, holding temperature for 90 + -10 min (preferably 90min), and water cooling.
The specific implementation process of a take locking strip of self-locking function in this application is as follows: the mounting screw 1 is adopted to fix the locking bar 4 on the printed board through three mounting screw holes 3 on the locking bar 4, and then the screw 1 sequentially and spirally penetrates through the reinforcing parts 501 and the closing part 502 of the locking wedge 2, the locking bar 4 and the self-locking wedge 5, so that the contact surfaces of the locking wedge 2 and the locking bar 4 and the contact surfaces of the locking bar 4 and the reinforcing parts 501 are tightly attached.
Claims (9)
1. The utility model provides a take self-locking function's locking strip, includes the locking strip and through the locking voussoir of screw connection in locking strip one end, the face that locking voussoir and locking strip laminated mutually is the inclined plane, and logical groove, its characterized in that have been seted up to the length direction of locking strip: the tops of the two ends of the through groove are sealed, so that connecting holes are formed at the two ends of the through groove; the terminal surface of the other end of locking bar also is the inclined plane, can dismantle and be connected with the auto-lock voussoir, and the auto-lock voussoir includes the same reinforcement portion of outside form and locking voussoir structure and the cylindrical binding off portion of cavity, and the binding off shape of binding off portion is oval, reinforcement portion and binding off portion fixed connection and intercommunication, the screw stretches out logical groove and threaded connection reinforcement portion and binding off portion in proper order.
2. The locking strip with the self-locking function of claim 1, wherein: the orientation of the inclined plane at two ends of the locking bar is the same, and the through groove is positioned on one side with shorter length of the locking bar.
3. The locking strip with the self-locking function of claim 2, wherein: the locking bar is provided with a plurality of mounting screw holes which are positioned in the same length direction.
4. The locking strip with the self-locking function of claim 3, wherein: the mounting screw holes are three, and the distance between the three mounting screw holes is the same.
5. The locking strip with the self-locking function according to any one of claims 1 to 4, wherein: each component of the locking strip is made of stainless steel.
6. The processing method of the locking strip with the self-locking function according to claim 5, characterized in that: the method comprises the following steps:
machining method of self-locking wedge block
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread;
3) counting vehicles: turning a closing-up table according to a given size, and removing burrs after turning;
4) closing: closing up at two points, wherein the shape of the closing up is an ellipse; then carrying out surface passivation treatment;
second, machining method of locking wedge block
1) Blanking according to the requirement of a given blank material, and then carrying out heat treatment to enable the performance of the blank material after heat treatment to reach HB 241-341;
2) milling the shape according to the given size; deburring; tapping: tapping an internal thread; then carrying out surface passivation treatment;
thirdly, the processing method of the locking bar comprises the following steps:
1) blanking according to the requirement of a given blank;
2) milling the reference, the shape, the inner cavity and the connecting hole according to the times, and then milling the shape again;
3) carrying out Fe/Ct.P surface treatment after the intermediate detection;
third, assemble
1) Collecting parts: preparing a screw, a locking bar, a locking wedge block and a self-locking wedge block;
2) assembling: the screw sequentially and spirally penetrates through the locking wedge block, the locking strip and the self-locking wedge block.
7. The processing method of the locking strip with the self-locking function according to claim 6, characterized in that: in the first step and the second step, the heat treatment conditions are that the quenching temperature is 1010 +/-10 ℃, the heat preservation time is 70 +/-10 min, and oil cooling is adopted; tempering temperature is 600 plus or minus 10 ℃, heat preservation time is 90 plus or minus 10min, and water cooling is carried out.
8. The processing method of the locking strip with the self-locking function according to claim 6, characterized in that: in the first step and the second step, the heat treatment conditions are that the quenching temperature is 1010 +/-10 ℃, the heat preservation time is 70min, and oil cooling is adopted; tempering temperature is 600 +/-10 ℃, heat preservation time is 90min, and water cooling is carried out.
9. The processing method of the locking strip with the self-locking function according to any one of claims 6 to 8, characterized in that: during several cars, the closing-up table is finely processed by positioning with a threaded mandrel, and the concentricity of the internal thread of the threaded mandrel and the closing-up table is 0.03 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011590387.2A CN112911879A (en) | 2020-12-29 | 2020-12-29 | Locking strip with self-locking function and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011590387.2A CN112911879A (en) | 2020-12-29 | 2020-12-29 | Locking strip with self-locking function and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112911879A true CN112911879A (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011590387.2A Pending CN112911879A (en) | 2020-12-29 | 2020-12-29 | Locking strip with self-locking function and processing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112911879A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080611A (en) * | 1990-12-21 | 1992-01-14 | Amp Incorporated | Boardlock for common-hole double-sided mounting |
| US20060221576A1 (en) * | 2005-03-30 | 2006-10-05 | Fujitsu Limited | Radiator device and plug-in unit |
| CN101486047A (en) * | 2009-02-25 | 2009-07-22 | 沪东重机有限公司 | Method for producing whole metal self-locking nut |
| CN201976384U (en) * | 2010-12-30 | 2011-09-14 | 成都天奥测控技术有限公司 | Device for reinforcing standard peripheral component interconnect (PCI) extensions for instrumentation (PXI) module |
| CN205284010U (en) * | 2015-12-23 | 2016-06-01 | 陕西迈堃科学技术有限公司 | Extract formula PCB board lock |
| CN107979940A (en) * | 2017-11-13 | 2018-05-01 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of locking bar floating mount mechanism and installation method |
| CN108488192A (en) * | 2018-03-26 | 2018-09-04 | 贵州精立航太科技有限公司 | A kind of spindle-type riveting nut and preparation method thereof |
-
2020
- 2020-12-29 CN CN202011590387.2A patent/CN112911879A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5080611A (en) * | 1990-12-21 | 1992-01-14 | Amp Incorporated | Boardlock for common-hole double-sided mounting |
| US20060221576A1 (en) * | 2005-03-30 | 2006-10-05 | Fujitsu Limited | Radiator device and plug-in unit |
| CN101486047A (en) * | 2009-02-25 | 2009-07-22 | 沪东重机有限公司 | Method for producing whole metal self-locking nut |
| CN201976384U (en) * | 2010-12-30 | 2011-09-14 | 成都天奥测控技术有限公司 | Device for reinforcing standard peripheral component interconnect (PCI) extensions for instrumentation (PXI) module |
| CN205284010U (en) * | 2015-12-23 | 2016-06-01 | 陕西迈堃科学技术有限公司 | Extract formula PCB board lock |
| CN107979940A (en) * | 2017-11-13 | 2018-05-01 | 中国航空工业集团公司西安航空计算技术研究所 | A kind of locking bar floating mount mechanism and installation method |
| CN108488192A (en) * | 2018-03-26 | 2018-09-04 | 贵州精立航太科技有限公司 | A kind of spindle-type riveting nut and preparation method thereof |
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Application publication date: 20210604 |
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