CN210068688U - Primary and secondary expansion screw subassembly - Google Patents
Primary and secondary expansion screw subassembly Download PDFInfo
- Publication number
- CN210068688U CN210068688U CN201920806145.9U CN201920806145U CN210068688U CN 210068688 U CN210068688 U CN 210068688U CN 201920806145 U CN201920806145 U CN 201920806145U CN 210068688 U CN210068688 U CN 210068688U
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- screw rod
- bolt head
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- 230000004075 alteration Effects 0.000 description 1
- 230000003466 anti-cipated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a nut expansion screw assembly, which belongs to the technical field of fasteners and comprises a bolt and a screw, wherein the head of the screw is provided with an inner hole which can be screwed in and out by matching with a manual or electric tool, the bolt comprises a bolt head and a screw rod, the middle part of the bolt head is provided with a screwing port, the inside of the screw rod is provided with a through hole with an internal thread, and the screw rod is axially provided with a crack; the relative position of the screw screwed into the through hole in the screw is controlled to change the fastening degree of the bolt on the fastened object, and the screw is simple to disassemble and can be used repeatedly; mainly for fastening objects.
Description
Technical Field
The utility model relates to a fastener technical field, in particular to expansion screw subassembly is female to son.
Background
The existing expansion screws are provided with expansion pipe sleeves, the structure is complex, and the main screw cannot be used independently; for example, a mold used in industry is often disassembled and assembled, and a screw hole is loosened after a long time, so that high requirements on the matching precision of a screw and a screw hole are met, and the high-precision fastening effect of screws with common fixed specifications is difficult to realize; the common expansion screw can not adjust the tightness degree and can not be reused after being disassembled.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems existing in the prior art, the utility model adopts the following technical scheme: the utility model provides a primary and secondary inflation screw subassembly, includes bolt, screw, the screw head is equipped with the hole that can cooperate manual or electric tool to screw in and screw out, the bolt includes bolt head, screw rod, the mouth of revolving is seted up at bolt head middle part, and the inside through-hole that has the internal thread of seting up of screw rod, the screw rod axial is equipped with the crack, changes the fastening degree of bolt to the object of fastening through the relative position in the through-hole of control screw in to the screw rod inside.
Preferably, the screw is a cylinder with external threads and/or a circular table with external threads;
preferably, the bolt head is a hexagonal bolt head;
preferably, the radial dimension of the through hole in the screw rod is smaller than that of the rotary inlet in the middle of the bolt head;
preferably, the radial dimension of the middle upper part of the through hole is larger than that of the lower part of the through hole;
further preferably, the number of the slits is four and the slits are uniformly distributed in the circumferential direction of the screw.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model has simple structure, and the external bolt can be used independently; for example, the mold used in industry can be disassembled and assembled frequently, and the screw hole can be loosened after a long time, so that the matching precision of the screw and the screw hole is highly required, the utility model changes the fastening degree of the bolt to the fastened object by controlling the relative position of the screw screwed into the through hole in the screw rod; the utility model discloses dismantle simply, can use repeatedly.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the bolt structure of the present invention;
FIG. 3 is a cross-sectional view of the bolt of the present invention;
FIG. 4 is a schematic view of the screw structure of the present invention;
fig. 5 is a top view of the screw of the present invention;
fig. 6 is a bottom view of the bolt of the present invention.
In the figure: 1. a bolt; 2. a screw; 3. an inner bore; 4. a bolt head; 5. a screw; 6. a swirl inlet; 7. a through hole; 8. crack (crack)
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 work belong to the protection scope of the present invention.
Referring to fig. 1-6, a primary and secondary expansion screw assembly includes a bolt 1 and a screw 2, the head of the bolt is provided with an inner hole 3 which can be screwed in and out by a manual or electric tool, the bolt 1 includes a bolt head 4 and a screw rod 5, the middle part of the bolt head 4 is provided with a screw inlet 6, the screw rod 5 is provided with a through hole 7 with internal threads, the screw rod 5 is provided with a crack 8 in the axial direction, and the fastening degree of the bolt 1 to a fastened object is changed by controlling the relative position of the screw 2 screwed into the through hole 7 in the screw rod 5; the screw 2 is a cylinder with external threads and/or a circular table with external threads; the bolt head 4 is a hexagonal bolt head; the radial size of the through hole 7 in the screw rod 5 is smaller than that of the screw-in opening 6 in the middle of the bolt head 4; the radial size of the middle upper part of the through hole 7 is larger than that of the lower part of the through hole 7; the four slits 8 are uniformly distributed in the circumferential direction of the screw rod 5, and the radial dimension of the screw 2 is consistent with the radial dimension of the screw inlet 6 on the bolt head 4.
The working principle is as follows: when fastening an object, the bolt 1 is screwed into a fastener preformed hole of the fastened object manually or electrically, if only the bolt 1 of the utility model is used, the fastening effect can be achieved, and the screw 2 of the utility model is not needed; if only use the utility model discloses a bolt 1 can not reach anticipated fastening effect, can with the utility model discloses screw 2 is manual or the screw in mouth 6 at screw head 4 middle part of electronic ground, further through-hole 7 in the screw in screw rod 5, and the through-hole receives the tension from screw 2, and four cracks 8 on the screw rod 5 outwards strut, the radial grow of screw rod 5, through the relative position change bolt 1 in the through-hole 7 of control screw 2 screw in screw rod 5 inside to the fastening degree of fastened object.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. A primary and secondary expansion screw subassembly which characterized in that: including bolt, screw, the screw head is equipped with the hole that can cooperate manual or electric tool to screw in and screw out, the bolt includes bolt head, screw rod, the entry of revolving is seted up in the bolt head middle part, and the screw rod is inside to be seted up to have the internal screw thread through-hole, the screw rod axial is equipped with the crack, changes the bolt to the fastening degree of fastening the object through the relative position of control screw in to the inside through-hole of screw rod.
2. A female and male expansion screw assembly according to claim 1, wherein: the screw is a cylinder with external threads or a circular table with external threads.
3. A female and male expansion screw assembly according to claim 1, wherein: the bolt head is a hexagonal bolt head.
4. A female and male expansion screw assembly according to claim 1, wherein: the radial dimension of the through hole in the screw rod is smaller than that of the rotary inlet in the middle of the bolt head.
5. A female and male expansion screw assembly according to claim 1, wherein: the radial dimension of the middle upper part of the through hole is larger than that of the lower part of the through hole.
6. A female and male expansion screw assembly according to claim 1, wherein: the number of the cracks is four, and the cracks are uniformly distributed on the circumferential direction of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920806145.9U CN210068688U (en) | 2019-05-30 | 2019-05-30 | Primary and secondary expansion screw subassembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920806145.9U CN210068688U (en) | 2019-05-30 | 2019-05-30 | Primary and secondary expansion screw subassembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210068688U true CN210068688U (en) | 2020-02-14 |
Family
ID=69455436
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920806145.9U Active CN210068688U (en) | 2019-05-30 | 2019-05-30 | Primary and secondary expansion screw subassembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210068688U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107575A (en) * | 2019-05-30 | 2019-08-09 | 河北鑫泰轴承锻造有限公司 | A kind of primary and secondary setscrew component |
-
2019
- 2019-05-30 CN CN201920806145.9U patent/CN210068688U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107575A (en) * | 2019-05-30 | 2019-08-09 | 河北鑫泰轴承锻造有限公司 | A kind of primary and secondary setscrew component |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A type of expansion screw component for mother and son Granted publication date: 20200214 Pledgee: Agricultural Bank of China Limited by Share Ltd. Linxi county subbranch Pledgor: HEBEI XINTAI BEARING FORGING CO.,LTD. Registration number: Y2024980000429 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |