CN213929078U - Secure bolt assembly - Google Patents
Secure bolt assembly Download PDFInfo
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- CN213929078U CN213929078U CN202022072980.XU CN202022072980U CN213929078U CN 213929078 U CN213929078 U CN 213929078U CN 202022072980 U CN202022072980 U CN 202022072980U CN 213929078 U CN213929078 U CN 213929078U
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- nut
- sleeve
- spiral part
- head
- end part
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Abstract
The utility model discloses a fastening bolt assembly, which comprises a screw rod and a nut with internal thread, wherein the screw rod comprises a spiral part with external thread and a head part which is positioned at one end of the spiral part and has an external diameter larger than the external diameter of the spiral part, and the nut is arranged on the spiral part of the screw rod; a sleeve is sleeved on the spiral part between the head of the screw and the nut, the end face of one end of the sleeve is contacted with the head of the screw, a plurality of wire grooves axially parallel to the spiral part are formed in the end face of the other end of the sleeve at intervals along the circumferential direction, and a plurality of raised strips embedded into the wire grooves are formed in the outer surface of the nut at intervals along the circumferential direction; the nut further comprises a first end part with the convex strips and a second end part far away from the sleeve, the outer surface of the first end part is a conical surface, and the outer diameter of the joint of the first end part and the second end part is the maximum outer diameter of the nut. The utility model discloses connection structure's stability and joint strength can be guaranteed, the condition such as connection not hard up is avoided taking place.
Description
Technical Field
The utility model relates to a building field especially relates to close formula bolt subassembly.
Background
As technology has matured, fabricated buildings have begun to emerge and are of general interest to the construction industry. The prefabricated building refers to a building assembled on a construction site by using prefabricated components. The building has the advantages of high building speed, less restriction by climatic conditions, labor saving and building quality improvement.
For the connection of various tubular components in a fabricated building, the method in the technical code of light steel structure houses (JGJ 209-2010) is to sleeve and connect a steel pipe column by a steel sleeve, and then weld the steel pipe column and the steel sleeve together by spot welding on the steel sleeve. However, the method has the disadvantages that the binding force between the steel sleeve and the steel pipe column is not strong, the overall performance is insufficient, the assembly is complex and time-consuming, and the method is better dependent on the professional degree of constructors.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a close formula bolt assembly, this close formula bolt assembly can guarantee connection structure's stability and joint strength, avoids taking place to connect the condition such as not hard up.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a captive bolt assembly comprising a threaded shank and a nut having an internal thread, the threaded shank comprising a screw portion having an external thread and a head portion at one end of the screw portion and having an external diameter greater than the external diameter of the screw portion, the nut being mounted on the screw portion of the threaded shank;
a sleeve is sleeved on the spiral part between the head of the screw and the nut, the end face of one end of the sleeve is contacted with the head of the screw, a plurality of wire grooves axially parallel to the spiral part are formed in the end face of the other end of the sleeve at intervals along the circumferential direction, and a plurality of raised strips embedded into the wire grooves are formed in the outer surface of the nut at intervals along the circumferential direction;
the nut further comprises a first end part with the convex strips and a second end part far away from the sleeve, the outer surface of the first end part is a conical surface, the outer diameter of the joint of the first end part and the second end part is the maximum outer diameter of the nut, and the maximum outer diameter is the same as the outer diameter of the sleeve.
The further improved scheme in the technical scheme is as follows:
1. in the above scheme, the outer surface of the second end portion is a tapered surface.
2. In the above scheme, the outer diameter of the first end portion far away from the second end portion is smaller than the inner diameter of the sleeve.
3. In the above scheme, the inner walls of the first end part and the second end part are cylindrical surfaces with the same diameter and threads.
4. In the above scheme, the head part of the screw rod and the spiral part thereof are of an integrally formed structure.
Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:
1. the utility model discloses close formula bolt assembly, it can be to one side for a plurality of parts (if between two tube cylinder bodies, between a tube cylinder body and other parts) of airtight space realize the fastening connection, and convenient operation, fastening are effectual, can not go out to connect the not hard up condition of droing, and then guarantee the stability of connecting between the part.
2. The utility model discloses a close formula bolt assembly, the terminal surface of its sleeve one end contacts with the head of screw rod, along circumference interval on the terminal surface of the sleeve other end seted up a plurality of and spiral portion axial direction parallel's wire casing, along circumference interval on the surface of nut be provided with a plurality of confession embedding sand grip in the wire casing, the nut further includes the first end that has the sand grip and keeps away from the second end of sleeve, the surface of first end is the toper face, the external diameter of the junction of this first end and second end is the maximum external diameter of nut, this maximum external diameter is the same with the external diameter of sleeve, through the embedding joint of sand grip tip and wire casing, guarantees the relative fixation of nut and sleeve, thereby realizes only can realizing fast from the outside to the screwing up of nut and bolt, and is further, can also play the guide effect, cooperates the toper face of first end, through further to sleeve direction removal of nut, strut sleeve one end outwards, further guarantee connection structure's stability and joint strength, avoid taking place to connect the condition such as not hard up.
Drawings
FIG. 1 is a schematic structural view of the fastening bolt assembly of the present invention;
fig. 2 is an exploded view of the fastening bolt assembly of the present invention.
In the above drawings: 1. a screw; 2. a nut; 3. a spiral portion; 4. a head portion; 5. a sleeve; 6. a wire slot; 7. a convex strip; 8. a first end portion; 9. a second end portion.
Detailed Description
Example 1: a fastening bolt assembly comprises a screw 1 and a nut 2 with internal threads, wherein the screw 1 comprises a spiral part 3 with external threads and a head part 4 which is positioned at one end of the spiral part 3 and has an external diameter larger than that of the spiral part 3, and the nut 2 is arranged on the spiral part 3 of the screw 1;
a sleeve 5 is sleeved on the spiral part 3 between the head 4 of the screw rod 1 and the nut 2, the end face of one end of the sleeve 5 is contacted with the head 4 of the screw rod 1, a plurality of wire grooves 6 which are parallel to the axial direction of the spiral part 3 are arranged on the end face of the other end of the sleeve 5 at intervals along the circumferential direction, and a plurality of convex strips 7 which are embedded into the wire grooves 6 are arranged on the outer surface of the nut 2 at intervals along the circumferential direction;
the nut 2 further comprises a first end portion 8 with ribs 7 and a second end portion 9 remote from the sleeve 5, the outer surface of the first end portion 8 is a conical surface, and the outer diameter of the joint of the first end portion 8 and the second end portion 9 is the maximum outer diameter of the nut 2, which is the same as the outer diameter of the sleeve 5.
The head part 4 of the screw rod 1 is fixedly connected with the spiral part 3 thereof through threads; the outer surface of the second end part 9 is a conical surface; the outer diameter of the first end portion 8 remote from the second end portion 9 is smaller than the inner diameter of the sleeve 5.
Example 2: a fastening bolt assembly comprises a screw 1 and a nut 2 with internal threads, wherein the screw 1 comprises a spiral part 3 with external threads and a head part 4 which is positioned at one end of the spiral part 3 and has an external diameter larger than that of the spiral part 3, and the nut 2 is arranged on the spiral part 3 of the screw 1;
a sleeve 5 is sleeved on the spiral part 3 between the head 4 of the screw rod 1 and the nut 2, the end face of one end of the sleeve 5 is contacted with the head 4 of the screw rod 1, a plurality of wire grooves 6 which are parallel to the axial direction of the spiral part 3 are arranged on the end face of the other end of the sleeve 5 at intervals along the circumferential direction, and a plurality of convex strips 7 which are embedded into the wire grooves 6 are arranged on the outer surface of the nut 2 at intervals along the circumferential direction;
The head 4 of the screw 1 and the spiral part 3 are integrally formed; the inner walls of the first end portion 8 and the second end portion 9 are cylindrical surfaces having the same diameter and having threads.
During the use, earlier with the screw rod, nut and sleeve equipment bolt assembly as an organic whole, make the interior wire casing on the sand grip one end embedding sleeve on the nut, thereby make nut and sleeve keep relatively fixed, pass bolt assembly again and treat adapting unit's installation through-hole, then fix the sleeve through instruments such as spanner, rotatory screw rod, along with the rotation of screw rod, the nut moves towards the direction that is close to the screw rod head along the axial of screw rod, further make the sand grip imbed in the wire casing on the sleeve, the sleeve outwards opens under the effect of the first end that the nut has the conical surface simultaneously, move to suitable position when the nut, stop rotatory screw rod.
When the fastening bolt assembly is adopted, the fastening connection of a plurality of parts (such as pipe columns) with one side being a closed space can be realized, the operation is convenient, the fastening effect is good, the condition that the connection is loosened and falls off can not occur, and the connection stability between the parts is further ensured;
through the embedding joint of sand grip tip and wire casing, guarantee nut and telescopic relatively fixed to the realization only can realize fast from the outside screwing up of nut and bolt, and is further, can also play the guide effect, and the conical surface of cooperation first end removes to the sleeve direction through further of nut, outwards struts sleeve one end, further guarantees connection structure's stability and joint strength, avoids taking place to connect the condition such as not hard up.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (5)
1. A captive bolt assembly, comprising: the nut is characterized by comprising a screw rod (1) and a nut (2) with an internal thread, wherein the screw rod (1) comprises a spiral part (3) with an external thread and a head part (4) which is positioned at one end of the spiral part (3) and has an external diameter larger than that of the spiral part (3), and the nut (2) is arranged on the spiral part (3) of the screw rod (1);
a sleeve (5) is sleeved on the spiral part (3) between the head (4) of the screw (1) and the nut (2), the end face of one end of the sleeve (5) is in contact with the head (4) of the screw (1), a plurality of wire grooves (6) which are axially parallel to the spiral part (3) are formed in the end face of the other end of the sleeve (5) at intervals along the circumferential direction, and a plurality of raised strips (7) which are embedded into the wire grooves (6) are formed in the outer surface of the nut (2) at intervals along the circumferential direction;
the nut (2) further comprises a first end part (8) with a convex strip (7) and a second end part (9) far away from the sleeve (5), the outer surface of the first end part (8) is a conical surface, and the outer diameter of the joint of the first end part (8) and the second end part (9) is the maximum outer diameter of the nut (2), and the maximum outer diameter is the same as the outer diameter of the sleeve (5).
2. The captive bolt assembly of claim 1, wherein: the outer surface of the second end part (9) is a conical surface.
3. A captive bolt assembly according to claim 1 or claim 2, wherein: the outer diameter of one end of the first end part (8) far away from the second end part (9) is smaller than the inner diameter of the sleeve (5).
4. The captive bolt assembly of claim 1, wherein: the inner walls of the first end part (8) and the second end part (9) are cylindrical surfaces with the same diameter and threads.
5. The captive bolt assembly of claim 1, wherein: the head (4) of the screw (1) and the spiral part (3) are of an integrally formed structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022072980.XU CN213929078U (en) | 2020-09-21 | 2020-09-21 | Secure bolt assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022072980.XU CN213929078U (en) | 2020-09-21 | 2020-09-21 | Secure bolt assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213929078U true CN213929078U (en) | 2021-08-10 |
Family
ID=77218832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022072980.XU Active CN213929078U (en) | 2020-09-21 | 2020-09-21 | Secure bolt assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213929078U (en) |
-
2020
- 2020-09-21 CN CN202022072980.XU patent/CN213929078U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 363999 Guanshan Industrial Park, Wu'an Town, Zhangzhou City, Fujian Province Patentee after: Haoheng (Fujian) Building Materials Technology Co.,Ltd. Address before: 363999 Guanshan Industrial Park, Wu'an Town, Zhangzhou City, Fujian Province Patentee before: Zhangzhou Haoheng building materials Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |