CN111853006A - Fastening device - Google Patents
Fastening device Download PDFInfo
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- CN111853006A CN111853006A CN201910340392.9A CN201910340392A CN111853006A CN 111853006 A CN111853006 A CN 111853006A CN 201910340392 A CN201910340392 A CN 201910340392A CN 111853006 A CN111853006 A CN 111853006A
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- plate
- connecting part
- fastening device
- riveting
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- 238000010276 construction Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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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
- F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
- F16B5/04—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting
- F16B5/045—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of riveting without the use of separate rivets
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Connection Of Plates (AREA)
Abstract
The invention discloses a fastening device, comprising: the first plate and the second plate are arranged in parallel, and the surfaces of the first plate and the second plate facing to the other plate are respectively provided with a non-through positioning groove body; and a connector, the connector comprising: a body having a first end and a second end opposite the first end; the first connecting part is arranged at the first end part of the body and protrudes towards the first plate, so that a first step surface surrounding the first connecting part is formed at the first end part of the body, and the first step surface is used for abutting against the first plate after the first connecting part is inserted into the positioning groove body of the first plate; and; and the second connecting part is arranged at the second end of the body and is protruded towards the second plate, so that a second step surface surrounding the second connecting part is formed at the second end of the body, and the second step surface is used for being abutted against the second plate after the second connecting part is inserted into the positioning groove body of the second plate.
Description
Technical Field
The invention relates to the technical field of fastening devices, in particular to a fastening device.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In industrial production equipment, due to functional requirements, it is very common that the corresponding part of a product is designed to have a double-layer plate structure. For example, a double-layer structure is required to be locally arranged at a plurality of parts in an automobile structure, and the double-layer structure sometimes does not have very strict requirements on connection strength and needs convenient installation. At present, two parts are usually connected in a threaded connection manner such as a screw and a bolt in a common connection manner in a mechanical structure, and the connection manner is matched with threaded locking and complex in operation on one hand, and on the other hand, through threaded holes or through holes need to be formed in the parts, particularly the parts with large volumes, so that connecting pieces such as the screw and the bolt can pass through the through threaded holes or the through holes, and under the condition that the sealing requirement is high, the integrity of sealing can be damaged due to the arrangement of the through threaded holes or the through holes, so that the instability of the work of the whole part is caused.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the invention.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the invention provides the fastening device, the two external plates can be directly fixed through the non-through positioning holes in a riveting connection mode, the overall sealing performance is effectively improved, the end faces of the two external plates can be abutted by the two step faces, and the deformation degree of the external plates is reduced.
The embodiment of the application discloses: a fastening device, comprising: the first plate and the second plate are arranged in parallel, and the surfaces of the first plate and the second plate facing to the other plate are respectively provided with a non-through positioning groove body; and a connector, the connector comprising: a body having a first end and a second end opposite the first end; the first connecting part is arranged at the first end part of the body and protrudes towards the first plate, so that a first step surface surrounding the first connecting part is formed at the first end part of the body, and the first step surface is used for abutting against the first plate after the first connecting part is inserted into the positioning groove body of the first plate; and; and the second connecting part is arranged at the second end of the body and is protruded towards the second plate, so that a second step surface surrounding the second connecting part is formed at the second end of the body, and the second step surface is used for being abutted against the second plate after the second connecting part is inserted into the positioning groove body of the second plate.
Further, the first connecting part is connected with the first plate through pressure riveting, turnover riveting or flanging; and/or the second connecting part is connected with the second plate through press riveting, turn riveting or flanging.
Further, the first connecting part is connected with the first plate through threads, and the second connecting part is connected with the second plate through pressure riveting, turning riveting or turning edges; or the first connecting part is connected with the first plate through pressure riveting, turning riveting or flanging, and the second connecting part is in threaded connection with the second plate.
Further, the surface of the first plate facing the connecting piece and the surface of the second plate facing the connecting piece are arranged in parallel.
Further, the first connecting part is vertically arranged relative to the surface of the first plate part close to the connecting part; the second connecting part is vertically arranged relative to the surface of the second plate close to the connecting piece.
Further, the first and/or second connection portions comprise serrations.
Further, a first protruding portion protruding towards the first plate is arranged on the end face of the first end portion of the body, and the first protruding portion is used for being embedded into the first plate after the first connecting portion is riveted with the first plate.
Further, a second protruding portion protruding towards the second plate is arranged on the end face of the second end portion of the body, and the second protruding portion is used for being embedded into the second plate after the second connecting portion and the second plate are riveted.
Furthermore, the fastening device further comprises a supporting part sleeved on the outer side of the body, and two end faces of the supporting part are respectively flush with the end face of the first end part and the end face of the second end part of the body.
Further, the body and the support portion are of a unitary construction.
By means of the technical scheme, the invention has the following beneficial effects:
1. the fastening device is provided with the first connecting part, the second connecting part and the non-through positioning groove body, the first connecting part and the second connecting part can be respectively inserted into the non-through positioning groove body and riveted with the positioning groove body, and the first plate and the second plate are respectively fixed with the connecting piece; due to the arrangement of the non-through groove body, compared with a threaded connecting piece, the through hole is avoided, and the relative sealing property between one side of the first plate piece, which is far away from the connecting piece, and one side of the second plate piece, which is far away from the connecting piece, is ensured;
2. The fastening assembly replaces locking connection of a threaded part through a riveting arrangement mode, so that the mounting procedure is effectively simplified, and the mounting time is shortened; meanwhile, an external fixing piece introduced when a threaded piece is used is avoided, and the overall production cost is reduced;
3. the fastening assembly of this application is through being provided with first step face and second step face, and then can increase first plate, second plate with the butt area of connecting piece when first plate, second plate receive external force, partial external force can be born to first step face and second step face, and then reduce effectively the deformation degree of first plate, second plate.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the overall device architecture in one of the states in one embodiment of the present invention;
FIG. 2 is a schematic diagram of the overall device structure in another of its states in one embodiment of the present invention;
FIG. 3 is a schematic diagram of the overall device structure in a state in another embodiment of the present invention;
FIG. 4 is a schematic view of the overall device structure in another state in another embodiment of the present invention;
FIG. 5 is a top view of a portion of the structure of the present invention;
fig. 6 is a schematic view of the overall device structure of the present invention having a support portion and a boss portion.
Reference numerals of the above figures: 1. a first plate member; 2. a second plate member; 3. a positioning groove body; 4. a body; 5. a first connection portion; 6. a second connecting portion; 7. a first step surface; 8. a second step surface; 9. a first boss portion; 10. a second boss portion; 11. a support portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, in the description of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and for distinguishing similar objects, and no precedence between the two is considered as indicating or implying relative importance. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
With reference to fig. 1 to 4, the present embodiment discloses a fastening device, which includes a first plate 1 and a second plate 2 that are arranged in parallel, and a non-through positioning groove 3 is opened on a surface of each of the first plate 1 and the second plate 2 facing the other plate. The fastening device further comprises a connecting piece having a body 4 with a first end and a second end opposite to the first end, a first connecting portion 5 arranged at the first end of the body 4 and protruding towards the first plate 1, and a second connecting portion 6 arranged at the second end of the body 4 and protruding towards the second plate 2. A first step surface 7 surrounding the first connecting part 5 is formed at the first end of the body 4, and the first step surface 7 is used for abutting against the first plate 1 after the first connecting part 5 is inserted into the positioning groove body 3; the second end of the body 4 is provided with a second step surface 8 surrounding the second connecting part 6, and the second step surface 8 is used for abutting the second connecting part 6 after being inserted into the positioning groove body 3 and the second plate 2
Through the arrangement of the first connecting part 5, the second connecting part 6 and the non-through positioning groove body 3, the first connecting part 5 and the second connecting part 6 can be respectively inserted into the non-through positioning groove body 3 and riveted with the positioning groove body 3, so that the first plate 1 and the second plate 2 are respectively fixed with the connecting piece; and because the non-through positioning groove body 3 is arranged, compared with a threaded connecting piece (the connection of two plates, a through hole is inevitably formed in one plate, certainly, under the condition that the plate is small, the non-through hole can be generated by rotating the plate, but the connection of the connecting piece and the plate is realized by rotating the plate, on one hand, the operation difficulty is high, on the other hand, under the condition that the plate is large in size, the rotation of the plate cannot be realized, the through hole is inevitably formed in the plate through the threaded connection, the generation of the through hole is avoided, and the relative sealing performance between one side of the first plate 1, which is opposite to the connecting piece, and one side of the second plate 2, which is opposite to the connecting piece, is ensured. In particular, when the fastening device is operated in an environment with liquid and gas, the relative sealing zones formed between the first plate 1 and the second plate 2 can avoid the leakage of liquid and gas, which entails the risk of leakage of the threaded connection. The riveting mode replaces the locking connection of a threaded part, effectively simplifies the installation procedure and shortens the installation time; meanwhile, an external fixing piece introduced when the threaded piece is used is avoided, and the overall production cost is reduced.
Through the setting of first step face 7 and second step face 8, can increase first plate 1, second plate 2 with the butt area of connecting piece when first plate 1, second plate 2 receive external force, first step face 7 and second step face 8 can bear partial external force, and then reduce effectively the deformation degree of first plate 1, second plate 2.
In the present embodiment, the first plate 1 and the second plate 2 may be streamlined plates or regular body plates (for example, rectangular bodies), and in the present embodiment, it is preferable that the first plate 1 and the second plate 2 are similar rectangular bodies. The first plate 1 and the second plate 2 are stacked up and down, and the surface of the first plate 1 facing the connecting piece and the surface of the second plate 2 facing the connecting piece are parallel to each other. The materials of the first plate 1 and the second plate 2 can be made of alloy materials, metal materials and/or plastics according to customer requirements, but it should be noted that, in practical application, the hardness of the first plate 1 and the hardness of the first connecting portion 5 can be different, and the hardness of the second plate 2 and the hardness of the second connecting portion 6 can be different. The arrangement mode can better ensure the effectiveness of the riveting process.
In this embodiment, the connecting member is located between the first plate member and the second plate member 2, and preferably, the first connecting portion 5 is disposed perpendicular to the first plate member 1, and the second connecting portion 6 is disposed perpendicular to the second plate member 2. The cross-sectional area of the first end of the body 4 is larger than that of any one of the first connecting parts 5, so that a first step surface 7 for abutting against the first plate 1 can be formed; also, the second end portion of the body 4 has a cross-sectional area larger than that of any one of the second connecting portions 6 to form a second step surface 8 for abutting against the second panel 2. According to application requirements, the end face of the first step face 7 is matched with the end face of the first plate close to one side of the connecting piece; the end face of the second step face 8 is matched with the end face of one side, close to the connecting piece, of the second plate. In the arrangement mode, when the connecting piece is riveted with the first plate 1 and the second plate 2 respectively, the end face of the first step face can be completely attached to the end face of the first plate 1, and the end face of the second step face can be completely attached to the end face of the second plate 2. When the first plate 1 and/or the second plate 2 are subjected to external pressure, the first step surface and the second step surface can play a role in supporting, so that the effectiveness and the stability of the first plate 1 and/or the second plate 2 are effectively improved, and meanwhile, the relative shaking between the first plate 1 and the second plate 2 is also reduced.
As shown in fig. 1 and 2, in the present embodiment, the first connecting portion 5 and/or the second connecting portion 6 include serrations. The first connecting part 5 is connected with the first plate 1 through press riveting, turn riveting or flanging; and/or the second connecting part 6 is connected with the second plate 2 through press riveting, turn riveting or flanging. Specifically, the first connecting portion 5 and the second connecting portion 6 both include a spline tooth, and the spline tooth corresponds to the non-through positioning groove body 3 formed in the first plate 1 and the second plate 2. During riveting, firstly, the first plate 1 is horizontally placed on a riveting table, and partial structures of the flower teeth of the first connecting part 5 are inserted into the positioning groove body 3 to keep the vertical state of the integral connecting piece; horizontally placing the second plate 2 and moving the second plate towards the connecting piece until the non-through groove body on the second plate 2 is accommodated in the partial structure of the flower teeth of the second connecting part 6; and applying riveting force towards the first plate 1 direction to the second plate 2, so that the two spline teeth are respectively and completely inserted into the non-through positioning groove bodies 3, and the press riveting process of the two spline teeth with the first plate 1 and the second plate 2 is completed. It should be noted that when the surface of the first step surface 7 is attached to the surface of the first plate 1 and the surface of the second step surface 8 is attached to the surface of the second plate 2, the press-riveting process is completed. Through foretell mode of setting up, adopt riveted locking mode to replace original bolt fastening, simplified the installation procedure effectively, shortened holistic installation time, also alleviateed the amount of labour.
In another alternative embodiment, shown in fig. 3 and 4, the first connecting portion 5 and/or the second connecting portion 6 comprise serrations. The first connecting part 5 is connected with the first plate 1 through threads, and the second connecting part 6 is connected with the second plate 2 through pressure riveting, turning riveting or turning edges; or, the first connecting part 5 is connected with the first plate 1 through press riveting, turn riveting or turn-up, and the second connecting part 6 is in threaded connection with the second plate 2. Specifically, the first connecting portion 5 includes a riveting column, and an abutting portion adapted to the riveting column is disposed in a non-through slot formed in the first plate 1; the second connecting portion 6 comprises a spline tooth, and the spline tooth corresponds to the non-through groove body formed in the second plate 2. During riveting, firstly, the first plate 1 is horizontally placed on an installation table, and the riveting column is screwed into the non-through positioning groove body 3 until the surface of the first step surface 7 is completely attached to the surface of the first plate 1, and at the moment, the connecting piece is in a vertical state; horizontally placing the second plate 2 and moving the second plate towards the connecting piece until the non-through groove body on the second plate 2 is accommodated in the partial structure of the flower teeth of the second connecting part 6; applying riveting force towards the first plate 1 to the second plate 2 to enable the spline teeth to be completely inserted into the positioning groove body 3, so that the press riveting action of the spline teeth and the second plate 2 is completed; it should be noted that when the second step surface 8 is attached to the surface of the second plate 2, the press riveting operation is completed.
As shown in fig. 5 and 6, in the present embodiment, a first protruding portion 9 protruding toward the first board 1 is provided on an end surface of the first end portion of the body 4, and the first protruding portion 9 has a hardness greater than that of the first board 1, so that the first protruding portion 9 can be embedded in the first board after the first connecting portion 5 is riveted with the first board 1. A second protruding portion protruding towards the second plate 2 is arranged on the end face of the second end portion of the body 4, and the hardness of the second protruding portion is larger than that of the second plate 2, so that the second protruding portion can be embedded into the second plate after the second connecting portion 6 and the second plate 2 are riveted. The above embodiment can further ensure the firmness of the connection between the first plate 1 and the second plate 2 and the connecting piece, respectively, and further ensure the working stability and safety of the whole fastening device.
In the above embodiment, the hardness of the first protruding portion 9 is greater than that of the first board 1, and the hardness of the second protruding portion is greater than that of the second board 2, so as to ensure that the first protruding portion 9 and the second protruding portion can be respectively embedded in the first board 1 and the second board 2. In particular, said first and second bosses 9 and 9 each comprise at least one block of cogs. In this embodiment, a second protruding portion is disposed on an end surface of the second end portion of the body 4 having the spline, the second protruding portion includes four gear blocks, and the four gear blocks are disposed on the periphery of the first connecting portion 5. Each of the blocks is disposed at or adjacent an edge of an end face of the first and second ends of the body 4. When the second plate 2 is subjected to external riveting force, the gear tooth block is firstly abutted against the end face of the second plate 2 and is gradually embedded into the second plate 2 under the action of riveting force until the end face of the second plate 2 is completely attached to the second step face 8.
Referring to fig. 5 and 6, in this embodiment, the fastening device includes a supporting portion 11 sleeved outside the body 4, and two end surfaces of the supporting portion 11 are flush with an end surface of the first end portion and an end surface of the second end portion of the body 4, respectively. Through the above flush arrangement mode, because the body 4 is formed with first step face 7 and second step face 8 respectively in first connecting portion 5 and the 6 periphery of second connecting portion, consequently the both ends face of supporting part 11 can flush with the terminal surface of first step face 7 and second step face 8 respectively mutually, like this after the riveting is accomplished, can increase better first plate 1, second plate 2 with the area of contact of connecting piece. In subsequent installation, in-process of using, when first plate 1, second plate 2 receive external force, because area of contact's grow, can increase the lifting surface area, can reduce like this better first plate 1, second plate 2 warp, guarantee first plate 1, second plate 2 job stabilization nature and validity.
The supporting part 11 is a cylinder or a polygon or a special-shaped body. Specifically, the support portion 11 is a regular polygonal body. When the vertical gap between the first plate 1 and the second plate 2 needs to be controlled in actual assembly, the regular polygon body with proper height is selected to realize accurate control on the preset gap, and manual adjustment of the position of the regular polygon body on the screw rod through a rotating nut is replaced. Compared with the prior art, the implementation mode reduces the generation of errors and ensures the accuracy of the reserved gap; on the other hand, the connecting mode is changed, the procedure of manual adjustment is directly omitted, the installation time is greatly shortened, and the labor intensity of workers is reduced. Of course, the supporting portion 11 may also be in other expressions such as a cylinder or a special-shaped body, and is not limited or described herein.
In the present embodiment, the body 4 and the support portion 11 are integrally formed, specifically, integrally formed by using a stamping technique. Compared with the prior art, the processing procedure is simpler, the installation procedure is also simpler, and the whole fastening time can be better shortened in two aspects. And adopt integrated into one piece to set up, for the cooperation of a plurality of spare parts between the prior art, it can effectively avoid the error between the cooperation, improves holistic fastening precision, configuration optimization.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. A fastening device, comprising:
the first plate and the second plate are arranged in parallel, and the surfaces of the first plate and the second plate facing to the other plate are respectively provided with a non-through positioning groove body; and
A connector, the connector comprising:
a body having a first end and a second end opposite the first end;
the first connecting part is arranged at the first end of the body and protrudes towards the first plate, so that a first step surface surrounding the first connecting part is formed at the first end of the body, and the first step surface is used for abutting against the first plate after the first connecting part is inserted into the positioning groove body of the first plate; and
the second connecting portion is arranged at the second end of the body and protrudes towards the second plate, so that a second step surface surrounding the second connecting portion is formed at the second end of the body, and the second step surface is used for being abutted to the second plate after the second connecting portion is inserted into the positioning groove body of the second plate.
2. The fastening device of claim 1, wherein the first connecting portion is connected to the first plate by a clinch, a turn-up or a flange;
and/or the second connecting part is connected with the second plate through press riveting, turn riveting or flanging.
3. The fastening device according to claim 1, wherein the first connecting portion is connected to the first plate by a screw thread, and the second connecting portion is connected to the second plate by a press rivet, a turn rivet, or a turn-up; or the first connecting part is connected with the first plate through pressure riveting, turning riveting or flanging, and the second connecting part is in threaded connection with the second plate.
4. The fastener of claim 1, wherein a surface of said first plate facing said connector and a surface of said second plate facing said connector are disposed parallel to each other.
5. The fastener of claim 1, wherein said first connecting portion is disposed perpendicularly with respect to a surface of said first plate member adjacent said connecting member; the second connecting part is vertically arranged relative to the surface of the second plate close to the connecting piece.
6. The fastening device of claim 1, wherein the first and/or second connecting portions comprise serrations.
7. The fastening device according to claim 1, wherein a first protruding portion protruding toward the first plate is provided on an end surface of the first end portion of the body, the first protruding portion being configured to be embedded in the first plate after the first connecting portion is riveted with the first plate.
8. The fastening device according to claim 1, wherein a second projecting portion projecting toward the second panel is provided on an end surface of the second end portion of the body, the second projecting portion being for embedding in the second panel after the second connecting portion is caulked with the second panel.
9. The fastening device according to claim 1, further comprising a support portion disposed outside the body, wherein two end faces of the support portion are flush with the end face of the first end portion and the end face of the second end portion of the body, respectively.
10. The fastening device of claim 9, wherein the body and the support portion are of unitary construction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340392.9A CN111853006A (en) | 2019-04-25 | 2019-04-25 | Fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910340392.9A CN111853006A (en) | 2019-04-25 | 2019-04-25 | Fastening device |
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| CN111853006A true CN111853006A (en) | 2020-10-30 |
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|---|---|---|---|
| CN201910340392.9A Pending CN111853006A (en) | 2019-04-25 | 2019-04-25 | Fastening device |
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| WO2017003023A1 (en) * | 2014-11-13 | 2017-01-05 | 임채갑 | Pipe connection device |
| JP2016200273A (en) * | 2015-04-07 | 2016-12-01 | イー・ディー・エル株式会社 | Member coupling tool and coupling body |
| CN204878198U (en) * | 2015-07-28 | 2015-12-16 | 宁波市镇海金力高强度紧固件有限公司 | Double -end rivet |
| CN208397108U (en) * | 2018-06-27 | 2019-01-18 | 浙江洪扬汽车零部件有限公司 | A kind of locking self-clinching nut |
| CN210106313U (en) * | 2019-04-25 | 2020-02-21 | 宾科精密部件(中国)有限公司 | Fastening device |
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