CN205908601U - It is two -sided to twisting fastening piece group - Google Patents

It is two -sided to twisting fastening piece group Download PDF

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Publication number
CN205908601U
CN205908601U CN201620781763.9U CN201620781763U CN205908601U CN 205908601 U CN205908601 U CN 205908601U CN 201620781763 U CN201620781763 U CN 201620781763U CN 205908601 U CN205908601 U CN 205908601U
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CN
China
Prior art keywords
screw rod
piece
nut
sided
flange
Prior art date
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Active
Application number
CN201620781763.9U
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Chinese (zh)
Inventor
王远芳
贾欲明
何四海
李永明
黄子洵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xian Aircraft Design and Research Institute of AVIC
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Xian Aircraft Design and Research Institute of AVIC
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Priority to CN201620781763.9U priority Critical patent/CN205908601U/en
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Publication of CN205908601U publication Critical patent/CN205908601U/en
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Abstract

The utility model provides an it is two -sided to twisting fastening piece group for the connection is by connecting piece (3) with by connecting piece two (4), including bolt (1), nut (2), bolt (1) is by flange (12) of the terminal cylinder shape along radial direction of connection of the screw rod of cylinder shape (11), one (11) axial of screw rod to and one (13) the constitution of connecting on the nut is gone up in flange (12), nut (2) comprise the screw rod two (21) of circle cylinder shape and the nut two (22) of two (21) axial end -to -end connections of screw rod. The utility model provides an it is two -sided to twisting fastening piece group, bearing capacity is strong, can be used to narrow and small space, and it is less by the connecting piece to can be used to to connect thickness.

Description

A kind of two-sided to tightening firmware group
Technical field
The utility model belongs to field of airplane structure, particularly to the specialty fastener for assembled aircraft structure Group and in particular to two-sided to tightening firmware group.
Background technology
In aircraft assembling process, a large amount of securing members can be used, but for some thickness less connected piece it is impossible to Connected using General fasteners or two-sided countersunk fastener, for narrow space between connected piece and other parts it is impossible to make Connected with General fasteners, two-sided countersunk head can be used for join domain narrow space position, but this kind of nail is similar with rivet, can only Connected using riveting method, therefore, when needing major diameter securing member to connect it is impossible to adopt.
Utility model content
The purpose of this utility model is to provide one kind two-sided to tightening firmware group, solves connected piece during narrow space and connects The problem connecing.
The purpose of this utility model is achieved through the following technical solutions: a kind of two-sided to tightening firmware group, for connecting quilt Connector one and connected piece two, including bolt, nut,
The cylinder that described bolt is radially connected by the screw rod one of cylindrical shape, described screw rod one axial end The nut one connecting on the flange of shape, and described flange forms;
Described nut is made up of the nut two that screw rod two and described screw rod two axial end of circle ring column shape connect; Connect described connected piece one and described connected piece two by described screw rod one is screwed in described screw rod two inner chamber.
Preferably, described nut one is all regular hexagon prism with described nut two.
Preferably, described screw rod two outer diameter is equal with described lip diameter.
Preferably, the length of described screw rod two is more than the thickness of described connected piece one and described connected piece two.
Preferably, the length of described flange is the half of described connected piece two thickness.
Preferably, the axial end near described flange side for the described screw rod one has one section of non-threaded polished rod region.
Provided by the utility model a kind of two-sided have the beneficial effects that to tightening firmware group, bearing capacity is strong, can use In small space, can be used for connecting the less connected piece of thickness.
Brief description
Fig. 1 be of the present utility model two-sided to tightening firmware group structural representation;
Fig. 2 be of the present utility model two-sided to tightening firmware group scheme of installation.
Reference:
1- bolt, 2- nut, 3- connected piece one, 4- connected piece two, 11- screw rod one, 12- flange, 13- nut one, 21- screw rod two, 22- nut two.
Specific embodiment
For making purpose, technical scheme and advantage that the utility model is implemented clearer, below in conjunction with the utility model Accompanying drawing in embodiment, is further described in more detail to the technical scheme in the utility model embodiment.In the accompanying drawings, ad initio To the element that same or similar label represents same or similar element or has same or like function eventually.Described reality Applying example is a part of embodiment of the present invention, rather than whole embodiments.Embodiment below with reference to Description of Drawings is to show Example property it is intended to be used for explaining the utility model, and it is not intended that to restriction of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of not making creative work, Broadly fall into the scope of the utility model protection.
Two-sided to the utility model below in conjunction with the accompanying drawings it is described in further details to tightening firmware group.
As shown in figure 1, two-sided to tightening firmware group, for connecting connected piece 1 and connected piece 24, including bolt 1st, nut 2, the cylindrical that bolt 1 is radially connected by the screw rod 1 of cylindrical shape, screw rod 1 axial end Nut 1 composition connecting on the flange 12 of shape and flange 12, in order to beneficial to processing and conveniently screwing, nut 1 is excellent Select regular hexagon prism shape, screw rod 1 outer wall has screw thread, but screw rod 1 is near the axial end of flange 12 side There is one section of non-threaded polished rod region, this polished rod region is that bolt 1 screws rear minimum clearance with nut 2 assembling, it is to avoid bolt 1 and spiral shell Female 2 contact wears, screw rod 1 diameter is less than flange 12 diameter, so that bolt 1 can be installed into the installing hole on connector, convex The length of edge 12 is preferably the half of connected piece 4 thickness, the length of flange 12 is oversize can make screw rod 1 length corresponding Shorten, be unfavorable for that bolt 1 screws in the change of nut 2 depth, the length of flange 12 is too short, and that bolt 1 can be made to install is insecure.
Nut 2 is made up of the nut 2 22 that the screw rod 2 21 of circle ring column shape is connected with screw rod 2 21 axial end, spiral shell Regular hexagon prism shape also preferentially selected by cap 2 22, and wherein, the length of screw rod 2 21 selects more than connected piece 3 and is connected The length of part 4, is easy to connect connected piece 1 and connected piece 24, screw rod 2 21 inwall and screw rod 1 are coordinated by screw thread Installation, screw rod 2 21 outer diameter and flange 12 equal diameters, are easy to through connected piece upper installing hole, concrete diameters take Certainly in connected piece installing hole pore size.
As shown in Fig. 2 when installing, first the installing hole pair on connected piece 1 to be mounted and connected piece 24 will be needed Just, load nut 2 from connected piece 1 installing hole, the length due to screw rod 2 21 is more than connected piece 1 thickness, thus, spiral shell Bar 2 21 part penetrates connected piece 24 and installs in the hole, loads bolt 1, the spiral shell in bolt 1 from connected piece 24 installing hole Bar 1 part screws in the screw rod 2 21 in nut 2, controls connected piece 1 and connected piece 24 by the depth screwing in Tightness is installed, wherein, regular hexagon nut 1 and regular hexagon nut 2 22 limit two connected piece axial movements.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to In this, any those familiar with the art in the technical scope that the utility model discloses, the change that can readily occur in Change or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with described Scope of the claims is defined.

Claims (6)

1. a kind of two-sided to tightening firmware group, for connecting connected piece one (3) and connected piece two (4) it is characterised in that wrapping Include bolt (1), nut (2),
Described bolt (1) is radially connected by the screw rod one (11) of cylindrical shape, described screw rod one (11) axial end Cylindrical shape flange (12), and upper nut one (13) composition connecting of described flange (12);
The nut that described nut (2) is connected by screw rod two (21) and described screw rod two (21) axial end of circle ring column shape Two (22) compositions;By by described screw rod one (11) screw in described screw rod two (21) inner chamber connect described connected piece one (3) and Described connected piece two (4).
2. according to claim 1 two-sided to tightening firmware group it is characterised in that described nut one (13) and described nut Two (22) is all regular hexagon prism.
3. according to claim 1 two-sided to tighten firmware group it is characterised in that described screw rod two (21) outer diameter with Described flange (12) equal diameters.
4. according to claim 1 two-sided to tightening firmware group it is characterised in that the length of described screw rod two (21) is more than Described connected piece one (3) and the thickness of described connected piece two (4).
5. according to claim 1 two-sided to tighten firmware group it is characterised in that described flange (12) length be described The half of connected piece two (4) thickness.
6. according to claim 1 two-sided to tightening firmware group it is characterised in that described screw rod one (11) is near described convex The axial end of edge (12) side has one section of non-threaded polished rod region.
CN201620781763.9U 2016-07-22 2016-07-22 It is two -sided to twisting fastening piece group Active CN205908601U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620781763.9U CN205908601U (en) 2016-07-22 2016-07-22 It is two -sided to twisting fastening piece group

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620781763.9U CN205908601U (en) 2016-07-22 2016-07-22 It is two -sided to twisting fastening piece group

Publications (1)

Publication Number Publication Date
CN205908601U true CN205908601U (en) 2017-01-25

Family

ID=57805900

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201620781763.9U Active CN205908601U (en) 2016-07-22 2016-07-22 It is two -sided to twisting fastening piece group

Country Status (1)

Country Link
CN (1) CN205908601U (en)

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