CN211202557U - Prevent bolt shell structure that drops - Google Patents
Prevent bolt shell structure that drops Download PDFInfo
- Publication number
- CN211202557U CN211202557U CN201921298960.5U CN201921298960U CN211202557U CN 211202557 U CN211202557 U CN 211202557U CN 201921298960 U CN201921298960 U CN 201921298960U CN 211202557 U CN211202557 U CN 211202557U
- Authority
- CN
- China
- Prior art keywords
- bolt
- flat cylinder
- joint
- connecting piece
- hole
- 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
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The utility model discloses a prevent bolt shell structure that drops, including first connecting piece, second connecting piece and pre-installation joint, first connecting piece department has seted up and has connected the pilot hole, and the lower oblate column of pre-installation joint passes through interference fit's mode pressure equipment and connects in the pilot hole, and the bolt connects soon on the pre-installation joint. The bolt, the preassembly joint and the preassembly can be assembled together, and the bolt and the preassembly joint are taken as a whole during assembly, so that the bolt is effectively prevented from falling off; secondly, the joint can be made into a standard part, so that the production efficiency is high, the production cost is low, and mass production is facilitated; and the structure is simple and compact, the practicability is strong, and the reliability is high.
Description
Technical Field
The utility model belongs to the technical field of bolt anti-disengaging structure's technique and specifically relates to a shell structure, in particular to mechanical connection structure that prevent bolt from dropping.
Background
In the traditional shell bolt connection, an upper cover and a shell are directly connected through a bolt, a threaded through hole is reserved in a connecting piece, a threaded hole is processed in a connected piece, the bolt penetrates through the threaded through hole to be meshed with the threaded hole, and the connecting piece is connected with the connected piece through torque.
Need very notice when traditional casing bolted connection uses on the new forms of energy actuating system, for example the installation of motor, because motor core has higher magnetism, especially in the little installation environment in some spaces, the iron bolt receives magnetic field influence easily in the installation, falls into inside the motor, adsorbs on motor core, need disassemble the assembly, just can take out the bolt, and this will cause great influence, increase manufacturing cost to the production beat.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a prevent that bolt shell structure that drops effectively prevents that the bolt from droing in assembling process. Overcomes the defects in the prior art.
In order to realize the purpose, the technical scheme of the utility model is that: a shell structure for preventing a bolt from falling comprises a first connecting piece, a second connecting piece and a pre-installed joint, wherein a joint assembling hole is formed in the position of the first connecting piece, the pre-installed joint is composed of an upper flat cylinder and a lower flat cylinder, the upper flat cylinder and the lower flat cylinder are of an integrated structure and are formed in one step, the outer diameter of the upper flat cylinder is larger than that of the lower flat cylinder, an annular step part is formed at the joint of the upper flat cylinder and the lower flat cylinder, the outer diameter of the lower flat cylinder is in interference fit with the inner diameter of the joint assembling hole, the lower flat cylinder is pressed in the joint assembling hole in an interference fit mode, the annular step part downwards supports against the first connecting piece, an internal thread hole is formed in the center of the upper flat cylinder, internal threads are distributed on the inner wall of the internal thread hole, an unthreaded hole is formed in the center of the lower flat cylinder, the unthreaded hole is communicated with the internal thread hole, the bolt is composed of a cap and a screw rod, the outer wall of the screw is distributed with external threads matched with the internal threads, the second connecting piece is provided with a bolt hole matched with the bolt, the bolt hole is internally provided with internal threads matched with the external threads, and the upper flat column on the upper edge of the internal thread hole forms an annular chamfer surface.
The utility model discloses a shell structure for preventing a bolt from falling, which can assemble the bolt and a pre-assembly joint together, and effectively avoid the bolt from falling as a whole during assembly; secondly, the joint can be made into a standard part, so that the production efficiency is high, the production cost is low, and mass production is facilitated; and the structure is simple and compact, the practicability is strong, and the reliability is high.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the pre-assembly joint structure of the present invention.
Fig. 3 is a schematic view of the assembling structure of the preassembly joint and the first connecting member of the present invention.
Fig. 4 is the schematic view of the assembling structure of the pre-assembled joint, the first connecting member and the bolt of the present invention.
Fig. 5 is a schematic view of the assembly structure of the present invention.
Fig. 6 is the structure diagram of the bolt disassembling process of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
The utility model discloses a prevent bolt shell structure that drops, it is different from prior art and lies in: the connector comprises a first connecting piece 1, a second connecting piece 2 and a pre-installed joint 3, wherein a bolt is assembled at the pre-installed joint 3, a joint assembling hole 4 is formed at the first connecting piece 1, the pre-installed joint 3 is composed of an upper oblate column 5 and a lower oblate column 6, the upper oblate column 5 and the lower oblate column 6 are in an integral structure and are formed in one step, the outer diameter of the upper oblate column 5 is larger than the outer diameter of the lower oblate column 6, an annular step part 15 is formed at the joint of the upper oblate column 5 and the lower oblate column 6, the outer diameter of the lower oblate column 6 is in interference fit with the inner diameter of the joint assembling hole 4, the lower oblate column 6 is pressed in the joint assembling hole 4 in an interference fit mode, the annular step part 15 downwards supports against the first connecting piece 1, an internal thread hole is formed in the center of the upper oblate column 5, internal threads are distributed on the inner wall of the internal thread hole, an unthreaded hole is, the bolt 7 is composed of a cap 8 and a screw 9, an annular convergence groove 10 is formed on the screw 9 at the joint of the cap 8 and the screw 9, external threads matched with the internal threads are distributed on the outer wall of the screw 9, a bolt hole 11 matched with the bolt 7 is arranged at the position of the second connecting piece 2, internal threads matched with the external threads are distributed in the bolt hole, and an annular chamfer surface 12 is formed at the position of the upper oblate column 5 at the upper edge of the internal thread hole.
In specific implementation, the first connecting piece 1, the preassembly connector 3 and the bolt 7 can be regarded as a whole to be assembled, so that the problem that the bolt falls off when the bolt is placed is avoided. The state of the integrally completed assembly is shown in fig. 5. In addition, the component can be prevented from falling down even when the component is disassembled, and the bolt is brought to the first connector 1 in the state of disassembly as shown in fig. 6. Effectively solve the problem that the bolt dropped and leads to.
The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (1)
1. The utility model provides a prevent bolt shell structure that drops which characterized in that: comprises a first connecting piece (1), a second connecting piece (2) and a pre-installed joint (3), wherein the first connecting piece (1) is provided with a joint assembly hole (4), the pre-installed joint (3) is composed of an upper flat cylinder (5) and a lower flat cylinder (6), the upper flat cylinder (5) and the lower flat cylinder (6) are of an integral structure and are formed by one-step processing, the outer diameter of the upper flat cylinder (5) is larger than the outer diameter of the lower flat cylinder (6), a ring-shaped step part (15) is formed at the joint of the upper flat cylinder (5) and the lower flat cylinder (6), the outer diameter of the lower flat cylinder (6) is in interference fit with the inner diameter of the joint assembly hole (4), the lower flat cylinder (6) is pressed in the joint assembly hole (4) in an interference fit manner, the ring-shaped step part (15) downwards supports against the first connecting piece (1), the center of the upper flat cylinder (5) is provided with an internal thread hole, and internal threads are distributed on, unthreaded hole (13) have been seted up to the central point of lower oblate column (6), unthreaded hole (13) and above-mentioned internal thread hole communicate each other, bolt (7) comprise cap (8) and screw rod (9), form annular convergent groove (10) on screw rod (9) of the junction of cap (8) and screw rod (9), distribute on the outer wall of screw rod (9) with above-mentioned female screw-thread fit's external screw thread, second connecting piece (2) department be provided with above-mentioned bolt (7) complex bolt hole (11), set up in the bolt hole distribute with above-mentioned male screw-thread fit's internal thread, last oblate column (5) department on the reason of internal thread hole forms annular chamfer face (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298960.5U CN211202557U (en) | 2019-08-12 | 2019-08-12 | Prevent bolt shell structure that drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921298960.5U CN211202557U (en) | 2019-08-12 | 2019-08-12 | Prevent bolt shell structure that drops |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211202557U true CN211202557U (en) | 2020-08-07 |
Family
ID=71854458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921298960.5U Active CN211202557U (en) | 2019-08-12 | 2019-08-12 | Prevent bolt shell structure that drops |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211202557U (en) |
-
2019
- 2019-08-12 CN CN201921298960.5U patent/CN211202557U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102916274A (en) | Novel DIN-type coupler | |
| CN211202557U (en) | Prevent bolt shell structure that drops | |
| CN105443553A (en) | Combined sleeve bolt | |
| CN201433999Y (en) | Rivet turning nut with locking performance | |
| CN214280301U (en) | Cable pressing sealing structure capable of being rapidly and repeatedly mounted and dismounted | |
| CN205349989U (en) | Combination sleeve pipe bolt | |
| CN106542068B (en) | A kind of underwater heat dissipation cabin body internal structure | |
| CN205578677U (en) | Fan acceleration rate case planet level ring gear connection structure | |
| CN208686770U (en) | Screw and nut assembly | |
| CN209267135U (en) | A kind of charging pile flange form waterproof connector | |
| CN206236558U (en) | Press-pull type jerk button head | |
| CN204061460U (en) | A kind of fixed structure having Line Doorbell | |
| CN209309101U (en) | A kind of self-clinching nut with flange gasket | |
| CN217302732U (en) | Column joint suitable for multiple lamps | |
| CN204436589U (en) | The bent axle oil pressure coupling of motor | |
| CN207093202U (en) | The pressing plate of turbocharging pipeline | |
| CN209952470U (en) | Connecting assembly for air inlet and outlet valve and filter element of precision filter | |
| CN212354138U (en) | Electrohydraulic steering gear | |
| CN209294215U (en) | Threaded fastener, controller and convertible frequency air-conditioner | |
| CN209604214U (en) | A kind of compressor and its air-conditioning | |
| CN209818568U (en) | Turbine flange piece | |
| CN203206049U (en) | Screw shaft motor mounting seat structure | |
| CN107906105A (en) | A kind of high sealing quick-release bolt for airframe | |
| CN209434119U (en) | Integral-type insulator | |
| CN202612762U (en) | Sealing structure of automatic control valve shell |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |