CN211219675U - Fastening device - Google Patents
Fastening device Download PDFInfo
- Publication number
- CN211219675U CN211219675U CN201922397077.8U CN201922397077U CN211219675U CN 211219675 U CN211219675 U CN 211219675U CN 201922397077 U CN201922397077 U CN 201922397077U CN 211219675 U CN211219675 U CN 211219675U
- Authority
- CN
- China
- Prior art keywords
- nut
- bolt
- fastening device
- jaws
- notch
- 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.)
- Active
Links
Images
Landscapes
- Clamps And Clips (AREA)
Abstract
The utility model provides a fastening device, fastening device includes: the connecting body is provided with two clamping jaws which are oppositely arranged and surround to form an installation space; the two clamping jaws comprise connecting ends and free ends, and the connecting ends are connected with the connecting main body; and the preload pieces penetrate through the free ends of the two clamping claws to gather the installation space. The utility model provides a fastener passes through the fixed optical axis of cooperation of two jack catchs and pretensioning piece, rather than relying on the clamping-force of two jack catchs fixed, consequently, the condition that the centre gripping became invalid can not appear in two jack catchs, and when fastener's pretightning force was not enough, directly change pretensioning piece can, need not abandon fastener is whole, reduced manufacturing cost.
Description
Technical Field
The utility model relates to the technical field of machining, in particular to fastener.
Background
In the manufacture of mechanical equipment, the machining and fixing of shafts, such as supporting shafts, connecting shafts, etc., are often involved. In the prior art, the shaft is fixed through the clamp of the fixing clamp so as to achieve the purposes of fastening and loosening, and because the fastening degree of the fixing clamp to the shaft is provided by the elasticity of the elastic part (such as a spring), when the using times of the fixing clamp are increased, the clamping force can be gradually reduced, the preset fastening degree can not be achieved, and the phenomenon of clamping failure is easy to occur.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a fastener, after the number of times that aims at solving fastener and use increases, the clamping-force can reduce gradually, can't reach predetermined fastening degree, appears the problem that the centre gripping became invalid easily.
To achieve the above object, the present invention provides a fastening device, which comprises:
the connecting body is provided with two clamping jaws which are oppositely arranged and surround to form an installation space;
the two clamping jaws comprise connecting ends and free ends, and the connecting ends are connected with the connecting main body;
and the preload pieces penetrate through the free ends of the two clamping claws to gather the installation space.
Optionally, the free ends of the two jaws are provided with fixing holes, the fixing holes on the two jaws are coaxial, and the preload piece is arranged in the fixing holes in a penetrating manner.
Optionally, the preload piece is a bolt and nut structure, a bolt in the bolt and nut structure penetrates through the fixing hole, and a nut in the bolt and nut structure is located in the notch and forms fit with the bolt.
Optionally, the width of the gap is between the shortest diagonal length and the longest diagonal length of the nut.
The positioning holes are formed in two opposite side walls of the notch, the two positioning holes are coaxially arranged, and two diagonals of the nut are at least partially clamped in the positioning holes.
Optionally, the notch has a wide opening and a narrow opening, and the wide opening and the narrow opening form an inverted T-shaped notch.
Optionally, the width of the wide opening is greater than the length of the shortest diagonal line of the nut and less than the length of the longest diagonal line of the nut; the width of the narrow opening is larger than the diameter of the bolt; the height of the wide opening is larger than or equal to the thickness of the nut.
Optionally, the preload part is of a bolt and nut structure, a groove is formed in the side face of at least one of the two jaws, a bolt in the bolt and nut structure penetrates through the fixing hole, and a nut in the bolt and nut structure is located in the groove and is matched with the bolt.
Optionally, the width of the groove is between the shortest diagonal length and the longest diagonal length of the nut; the height of the groove is larger than or equal to the length of the bolt in the groove when the two claws are abutted.
Optionally, the two opposite side surfaces of the two jaws are respectively provided with a buffer material having a buffer effect.
The utility model discloses technical scheme is through establishing two jack catchs in fastener's the connecting body, two jack catchs set up relatively and surround and form an installation space, two jack catchs include link and free end, the link is connected connecting body, the pretensioning piece is worn to establish the free end of two jack catchs in order to draw in the installation space, the pretensioning piece is at the in-process of pretension, deformation takes place for two jack catchs, make the installation space draw in gradually, when the optical axis is taken off to the needs pine, it can directly to dismantle the pretensioning piece from two jack catchs, two jack catchs resume deformation, because the optical axis is fixed through the cooperation of two jack catchs with the pretensioning piece, rather than the clamping-force that leans on two jack catchs is fixed, therefore, the condition that the centre gripping became invalid can not appear in two jack catchs, and when fastener's pretightning force is not enough, direct change.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of the fastening device of the present invention;
fig. 2 is a schematic structural view of another embodiment of the fastening device of the present invention;
fig. 3 is a schematic structural view of an embodiment of the fastening device of the present invention, wherein the fastening device connects the main body and the clamping jaw;
fig. 4 is a schematic structural view of the nut of the fastening device of the present invention;
fig. 5 is a schematic structural view of another embodiment of the fastening device of the present invention;
fig. 6 is a schematic structural view of another embodiment of the fastening device of the present invention, which connects the main body and the claw.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
25 | |
| 20 | Connecting |
26 | |
| 21 | |
27 | Handle (CN) |
| 22 | |
28 | |
| 23 | Connecting |
29 | Opening of the |
| 24 | |
30 | |
| 24a | |
31 | Locating |
| 24b | |
40 | Jack catch |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, the present invention provides a fastening device, which includes: the connecting body 20 is provided with two clamping jaws 40, and the two clamping jaws 40 are oppositely arranged and surround to form an installation space 30; the two jaws 40 comprise a connecting end (not shown) and a free end (not shown), the connecting end being connected to the connecting body 20; and a preload piece which is arranged at the free ends of the two claws 40 in a penetrating way to gather the installation space 30.
In this embodiment, the connecting body 20 is used for connecting two claws 40 and fixing the fastening device to an external device, the two claws 40 extend from the same end of the connecting body 20, and the two claws 40 are oppositely arranged to surround and form a mounting space 30, and the mounting space 30 is used for fixing the optical axis 10 to be processed.
The two claws 40 have a connecting end for connecting the two claws 40 to the connecting body 20 and a free end, the free ends of the two claws 40 surround to form an installation space 30 (as shown in fig. 3 and 5), and since the two claws 40 are arranged oppositely, the free ends of the two claws 40 form an opening 29, and the opening 29 is communicated with the installation space 30. The preload pieces are arranged at the free ends of the two claws 40 in a penetrating way and used for gathering the free ends of the two claws 40 together, so that the openings 29 formed at the free ends of the two claws 40 are gradually reduced, and the purposes of gathering the installation space 30 and fastening the optical axis 10 are further achieved.
In an optional embodiment, the connecting body 20 and the two claws 40 are integrally arranged, the two claws 40 have certain deformation capability, and the two claws 40 deform during the pre-tightening process of the pre-tightening piece, so that the installation space 30 gradually shrinks to achieve the purpose of tightening the optical axis 10, when the optical axis 10 needs to be loosened, the pre-tightening piece is directly detached from the two claws 40, and the two claws 40 recover deformation. Because the optical axis 10 is fixed through the cooperation of two jack catchs 40 with the pretensioning piece, and does not rely on the clamping force of two jack catchs 40 to fix, consequently, the condition that the centre gripping became invalid can not appear in two jack catchs 40, when fastener's pretightning force is not enough, direct change pretensioning piece can, need not abandon fastener is whole, reduced manufacturing cost.
The deformation of the two jaws 40 mainly occurs at the connection portion of the two jaws 40 and the connecting body 20 and the free ends of the two jaws 40, and the connecting body 20 and the two jaws 40 may be made of aluminum or aluminum alloy material to ensure that the two jaws 40 have a certain deformation capability. It will be appreciated that the fastener may be constructed of other metal materials having the ability to deform, such as stainless steel.
The overall shape of the fastener may be square, circular or polygonal, and the shape of the installation space 30 may be determined according to the outer shape of the optical axis 10, such as square or circular.
Further, fixing holes 21 are formed in the free ends of the two clamping jaws 40, the fixing holes 21 in the two clamping jaws 40 are coaxial, and the preload pieces are arranged in the fixing holes 21 in a penetrating mode.
The fixing holes 21 of the two claws 40 are oppositely arranged and correspond to each other in position to form two coaxial holes, the preload piece penetrates into the fixing hole 21 of the other claw 40 from the fixing hole 21 of one claw 40, and the preload piece applies a preload force to the two claws 40, so that the two claws 40 are close to each other to close the installation space 30 to fix the optical axis 10.
Specifically, as shown in fig. 2, the preload part is a bolt-nut structure, at least one of the two jaws 40 is provided with a notch 24, a bolt 22 in the bolt-nut structure passes through the fixing hole 21, and a nut 25 in the bolt-nut structure is located in the notch 24 to form a fit with the bolt 22.
The pretension piece is the bolt and nut structure, and the end is worn out from the fixed orifices 21 on another jack catch 40 in bolt 22 inserts fixed orifices 21, and nut 25 is located breach 24 bolt 22 forms the cooperation, prevents that nut 25 protrusion is in the outside of jack catch 40, and bolt 22 also sinks in this breach 24 simultaneously, avoids the bolt and nut structure to cause the scratch to the optical axis.
At least one of the two claws 40 is provided with a notch 24, that is, the notch 24 can be only positioned on one of the claws 40, or the notches 24 can be simultaneously arranged on the two claws 40.
In a specific implementation, the bolt 22 in the bolt and nut arrangement is a handle screw.
The handle screw includes handle 27 and screw, handle 27 and screw mutually perpendicular, and handle 27 and screw interconnect's position is equipped with a boss 26, and after the screw penetrated fixed orifices 21, boss 26 and jack catch 40 butt, the screw was worn out the back from another fixed orifices 21 and is cooperated with nut 25, and at this moment, fixed orifices 21 was the unthreaded hole, does not set up the screw on the pore wall, and boss 26 and nut 25 form the pretightning force to two jack catches 40 jointly for two jack catches 40 draw close each other in order to fold installation space 30, reach the purpose of fixed optical axis 10.
The handle 27 is perpendicular to the screw and extends beyond the jaws 40, and rotation of the handle 27 removes the screw from the mounting hole 21.
As shown in fig. 3 and 4, optionally, the width c of the notch 24 is between the shortest diagonal length b and the longest diagonal length a of the nut 25, and optionally, the width c of the notch 24 is equal to the lengths of two opposite sides of the nut 25.
The width of the gap 24 is greater than the length b of the shortest diagonal of the nut 25 to facilitate the nut 25 to fit into the gap 24, and the width of the gap 24 is less than the length a of the longest diagonal of the nut 25 to prevent the nut 25 from rotating and loosening from the bolt 22.
As an embodiment, as shown in fig. 3, positioning holes 31 are formed in two opposite side walls of the notch 24, the two positioning holes 31 are coaxially arranged, and two opposite corners of the nut 25 are clamped in the positioning holes 31.
The positioning holes 31 are located on two opposite side walls of the notch 24, the two positioning holes 31 are coaxially arranged, the two positioning holes 31 can be blind holes, and two opposite corners of the nut 25 are at least partially clamped in the positioning holes 31 to position the nut 25 and prevent the nut from rotating.
As shown in fig. 5 and 6, the notch 24 has a wide opening 24a and a narrow opening 24b, and the wide opening 24a and the narrow opening 24b form an inverted T-shaped notch 24.
The width of the wide opening 24a is between the shortest diagonal length and the longest diagonal length of the nut 25, and optionally, the width of the wide opening 24a is equal to the length of two opposite sides of the nut 25.
The width of the wide opening 24a is greater than the length of the shortest diagonal of the nut 25 to facilitate the installation of the nut 25 into the wide opening 24a, and the width of the wide opening 24a is less than the length a of the longest diagonal of the nut 25 to prevent the nut 25 from rotating and loosening from the bolt 22.
The width of the narrow opening 24b is smaller than the length of the shortest diagonal of the nut 25, further preventing the nut 25 from falling off, and at the same time, the width of the narrow opening 24b is larger than the diameter of the bolt 22, so that the bolt 22 can enter the narrow opening 24b to fasten the optical axis 10.
The height of the wide opening 24b is greater than or equal to the thickness of the nut 25 so as to facilitate the nut 25 to be installed in the wide opening 24a, and optionally, the height of the wide opening 24b is equal to the thickness of the nut 25 so as to further prevent the nut 25 from falling off.
The inverted T-shaped gap 24 enables the nut 25 to be plugged into the gap 24 through the wide opening 24a, the bolt 22 is inserted into the narrow opening 24b through the fixing hole 21, and the inverted T-shaped gap 24 enables the nut 25 not to fall out of the gap 24 easily in the process of installing the bolt and nut structure into the two clamping jaws 40, so that the installation efficiency is improved; meanwhile, in the process of loosening the optical axis 10, the nut 25 is not easy to fall out of the notch 24, and when the optical axis 10 is fastened again, the nut 25 does not need to be installed again.
In one embodiment, the preload member is a bolt and nut structure, a groove 32 is formed on the side surface of at least one of the two jaws 40, a bolt 22 in the bolt and nut structure passes through the fixing hole 21, and a nut 25 in the bolt and nut structure is positioned in the groove 32 to be matched with the bolt 22.
The pretension piece is the bolt and nut structure, and the end is worn out from the fixed orifices 21 on another jack catch 40 in bolt 22 inserts fixed orifices 21, and nut 25 is located recess 32 bolt 22 forms the cooperation, prevents that nut 25 protrusion is in the outside of jack catch 40, and bolt 22 also sinks in this breach 24 simultaneously, avoids the bolt and nut structure to cause the scratch to the optical axis.
The width c of the groove 32 is between the shortest diagonal length b and the longest diagonal length a of the nut 25, and optionally, the width c of the groove 32 is equal to the lengths of two opposite sides of the nut 25.
The width of the recess 32 is greater than the length b of the shortest diagonal of the nut 25 to facilitate the nut 25 to fit into the recess 31, and the width of the recess 32 is less than the length a of the longest diagonal of the nut 25 to prevent the nut 25 from rotating and loosening from the bolt 22.
The height of the groove 32 is greater than or equal to the length of the bolt 22 located in the groove 31 when the two jaws 40 abut.
In one embodiment, as shown in fig. 1, the preload member is a bolt 22, the fixing hole 21 is internally threaded, and the bolt 22 is in threaded connection with the fixing hole 21.
The fixing hole 21 may be provided with a thread, the thread forms a threaded connection with the bolt 22, and at this time, the fixing of the optical axis 10 by the two claws 40 is realized by the threaded connection formed by the bolt 22 and the thread.
Further, the connecting position of the two claws 40 and the connecting body 20 is provided with a groove 28, and the notch of the groove 28 faces the mounting space 30.
The grooves 28 are located at the position where the two jaws 40 are coupled to the connecting body 20, and the notches of the grooves 28 face the mounting space 30. The recesses 28 reduce the thickness of the portions of the two jaws 40 that are connected to the connecting body 20, and the deeper the recesses 28, the thinner the portions of the two jaws 40 that are connected to the connecting body 20, and the greater the deformation of the portions of the two jaws 40 that are connected to the connecting body 20.
The connecting body 20 is provided with a connecting hole 23, and the connecting hole 23 is used for fixing the connecting body 20 to an external device.
Specifically, two opposite side surfaces of the two jaws 40 are respectively provided with a buffering material (not shown in the figures) having a buffering function.
The buffer material may be attached to the two claws 40, and after the optical axis 10 is installed in the installation space 30, the buffer material is spaced between the optical axis 10 and the two claws 40 to prevent the claws 40 from scratching the optical axis 10. The buffer material can be foam cotton or rubber.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent structure transformation of the content of the specification and the attached drawings, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.
Claims (10)
1. A fastening device, characterized in that the fastening device comprises:
the connecting body is provided with two clamping jaws which are oppositely arranged and surround to form an installation space;
the two clamping jaws comprise connecting ends and free ends, and the connecting ends are connected with the connecting main body;
and the preload pieces penetrate through the free ends of the two clamping claws to gather the installation space.
2. The fastening device according to claim 1, wherein the two jaws have fixing holes at their free ends, the fixing holes of the two jaws are coaxial, and the preload member is inserted into the fixing holes.
3. The fastening device according to claim 2, wherein the preload member is a bolt and nut structure, at least one of the two jaws is provided with a notch, the bolt in the bolt and nut structure passes through the fixing hole, and the nut in the bolt and nut structure is positioned in the notch to form fit with the bolt.
4. A fastening device according to claim 3, wherein the width of the gap is between the shortest and longest diagonal lengths of the nut.
5. The fastening device according to claim 4, wherein the two opposite side walls of the notch are respectively provided with a positioning hole, the two positioning holes are coaxially arranged, and two opposite corners of the nut are at least partially clamped in the positioning holes.
6. The fastening device of claim 3, wherein the notch has a wide mouth and a narrow mouth, the wide mouth and the narrow mouth forming an inverted T-shaped notch.
7. The fastening device according to claim 6, wherein the width of the wide opening is greater than the length of the shortest diagonal line of the nut and less than the length of the longest diagonal line of the nut; the width of the narrow opening is larger than the diameter of the bolt; the height of the wide opening is larger than or equal to the thickness of the nut.
8. The fastening device according to claim 2, wherein the preload member is a bolt-and-nut structure, a groove is formed on a side surface of at least one of the two jaws, a bolt of the bolt-and-nut structure is passed through the fixing hole, and a nut of the bolt-and-nut structure is located in the groove to form a fit with the bolt.
9. The fastening device of claim 8, wherein the width of the groove is between the shortest diagonal length and the longest diagonal length of the nut; the height of the groove is larger than or equal to the length of the bolt in the groove when the two claws are abutted.
10. The fastening device according to claim 1, wherein the two jaws are provided with a buffering material on opposite sides thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922397077.8U CN211219675U (en) | 2019-12-26 | 2019-12-26 | Fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922397077.8U CN211219675U (en) | 2019-12-26 | 2019-12-26 | Fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211219675U true CN211219675U (en) | 2020-08-11 |
Family
ID=71939405
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922397077.8U Active CN211219675U (en) | 2019-12-26 | 2019-12-26 | Fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211219675U (en) |
-
2019
- 2019-12-26 CN CN201922397077.8U patent/CN211219675U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH1193933A (en) | Lock nut with nut mating means | |
| US20070036629A1 (en) | Fast fasten and loose resistant bolt and nut structure | |
| US3621751A (en) | Mounting stud | |
| CN211219675U (en) | Fastening device | |
| JP4093560B2 (en) | Parent rope support | |
| US20100294087A1 (en) | Tool sleeve clamping structure | |
| JP6420300B2 (en) | Mounting bracket and bird net fitting | |
| JP7318919B2 (en) | wall mounting unit | |
| KR20150005285A (en) | Fasting member | |
| CN210769783U (en) | Nut anti-loosening composite washer | |
| JP2002081416A (en) | Mounting fixture | |
| CN210563341U (en) | Anti-falling scaffold connecting pull rod | |
| CN218564139U (en) | Detachable locking device | |
| JP2000081168A (en) | Pipe fixture | |
| JP3037654U (en) | Loosening prevention bolt | |
| CN213684908U (en) | Self-fixing matched special-shaped nut | |
| JPH0643527Y2 (en) | Mounting bracket for angle | |
| CN217620278U (en) | Extendable wrench for irregular bolt | |
| CN220408622U (en) | Clip type nut tool | |
| CN218668198U (en) | Anchor and inhaul cable structure with same | |
| CN215673118U (en) | Grooving fastener takes precautions against earthquakes | |
| CN215058812U (en) | Screw with anti-drop packing ring | |
| CN214367195U (en) | Separation and reunion formula theftproof bolt assembly | |
| CN217653067U (en) | Over-screwing-prevention flange bolt | |
| CN215059243U (en) | Stop washer applied to eccentric wheel belt tensioning mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |