CN213511576U - Detachable expansion screw - Google Patents
Detachable expansion screw Download PDFInfo
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- CN213511576U CN213511576U CN202022302500.4U CN202022302500U CN213511576U CN 213511576 U CN213511576 U CN 213511576U CN 202022302500 U CN202022302500 U CN 202022302500U CN 213511576 U CN213511576 U CN 213511576U
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Abstract
The utility model discloses a detachable inflation screw, mainly by the hexagonal head lead screw, the double-end expansion pipe, movable inflation head, single-end expansion pipe and fastening formula inflation head are constituteed, wherein, the diameter of the first-half section pole body of hexagonal head lead screw is greater than the diameter of its second-half section pole body, can cooperate double-end expansion pipe or single-end expansion pipe in the second-half section pole body of hexagonal head lead screw, the inflation incision has been seted up respectively at the both ends of double-end expansion pipe, movable inflation head has been coordinated respectively at the both ends of double-end expansion pipe, the inflation incision has been seted up to single-end expansion pipe only one end, it has movable inflation head to set up the corresponding cooperation of the notched one end of inflation in the single-end expansion pipe, the bottom of the second-half section pole body of hexagonal head lead screw is provided with the external screw thread, the bottom meshing of the. The utility model discloses an use double-end or bull expansion pipe, its inflation back fastening effect is outstanding, its simple structure, and manufacturing cost is economic, and the installation is simple, and convenient the dismantlement uses the flexibility high.
Description
Technical Field
The utility model relates to an expansion screw technical field specifically is a detachable expansion screw.
Background
The expansion screw is generally a metal expansion screw, and the expansion screw is fixed by utilizing the wedge-shaped slope to promote expansion to generate friction bond force so as to achieve the fixing effect. One end of the screw is provided with threads, and the other end of the screw is provided with conicity. The outer surface of the wall is covered by an iron sheet (some steel pipes), a half of an iron sheet cylinder (steel pipe) is provided with a plurality of notches, the iron sheet cylinder (steel pipe) and the notches are plugged into a hole drilled on the wall together, then a nut is locked, the nut pulls a screw outwards to pull the taper into the iron sheet cylinder, the iron sheet cylinder is expanded and then is tightly fixed on the wall, and the wall is generally used for fastening protective guards, rain awnings, air conditioners and the like on materials such as cement, bricks and the like. The expansion screw at present adopts a single-end expansion pipe to expand and fasten mostly, and its effect that expands and fasten is general, and the expansion screw is difficult to dismantle after using moreover, and its use flexibility is relatively poor. In order to solve the existing problem, the utility model discloses a detachable inflation screw.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving present inflation screw and adopting the single-end expansion pipe to expand the fastening mostly, its effect that expands the fastening is general, and the inflation screw is difficult to dismantle after using moreover, and it uses shortcoming such as the flexibility is relatively poor, and provides a detachable inflation screw.
In order to achieve the above object, the utility model provides a following technical scheme:
the utility model provides a detachable inflation screw, mainly comprises hexagon head lead screw, double-end expansion pipe, movable inflation head, single expansion pipe and fastening formula inflation head, the diameter of the first half pole body of hexagon head lead screw is greater than the diameter of its second half pole body, can cooperate double-end expansion pipe or single expansion pipe in the second half pole body of hexagon head lead screw, wherein the both ends of double-end expansion pipe have seted up four expansion cuts respectively, the both ends of double-end expansion pipe correspond the cooperation respectively and have had movable inflation head, wherein the four expansion cuts have been seted up to single expansion pipe only one end, it has movable inflation head to set up the cooperation to set up the notched one end correspondence in the single expansion pipe, the bottom of the second half pole body of hexagon head lead screw is provided with the external screw thread, the bottom meshing of the second half pole body of hexagon head lead screw has a department fastening formula inflation head.
Preferably, the double-end expansion pipe, the single-end expansion pipe and the movable expansion head are in clearance fit with the lower half rod body of the hexagonal head screw rod. The double-end expansion pipe and the single-end expansion pipe are mainly used for expansion and fastening of the hexagonal-head screw rod, and the double-end expansion pipe and the single-end expansion pipe are used for promoting expansion of the double-end expansion pipe and the single-end expansion pipe by utilizing the wedge-shaped inclination of the movable expansion head.
Preferably, the fastening type expansion head is meshed with the bottom of the lower half section of the rod body of the hexagonal head screw rod through threads, and internal threads matched with the external threads in the lower half section of the rod body of the hexagonal head screw rod are arranged inside the fastening type expansion head. And under the meshing action of the threads, the fastening expansion heads stretch each movable expansion head to enable the corresponding double-head expansion pipe or single-head expansion pipe to expand.
Preferably, the outer side surface of the fastening type expansion head is provided with anti-slip lines, wherein the surface of the anti-slip lines is subjected to heat treatment. The anti-skidding lines are arranged on the surface of the outer side of the fastening type expansion head, so that the friction force between the fastening type expansion head and the hole can be effectively increased, and the hexagonal head screw rod can be conveniently rotated to perform expansion fastening. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
Preferably, the outer side surfaces of the two ends of the double-end expansion pipe and the outer side surface of the end of the single-end expansion pipe, which is provided with the expansion notch, are provided with anti-skid grains, and the surfaces of the anti-skid grains are subjected to heat treatment. The anti-skidding lines are arranged on the outer side surfaces of the two ends of the double-end expansion pipe and the outer side surface of the end of the single-end expansion pipe, which is provided with the expansion notch, so that the friction force between the double-end expansion pipe or the single-end expansion pipe and the hole after expansion can be effectively increased, and the fastening effect is more prominent. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model relates to a detachable inflation screw through using double-end or bull expansion pipe, and the fixed effect after its inflation is more outstanding, its simple structure, and manufacturing cost economy installs simply, and convenient the dismantlement uses the flexibility high.
Drawings
Fig. 1 is the external structure schematic diagram of the utility model discloses when cooperating double-end expansion pipe and single-end expansion pipe simultaneously.
Fig. 2 is the internal structure schematic diagram of the utility model discloses during cooperation double-end expansion pipe and single-end expansion pipe simultaneously.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a partially enlarged view of fig. 2 at B.
Fig. 5 is the external structure schematic diagram of the utility model when only matching with the double-head expansion pipe.
Fig. 6 is the schematic view of the internal structure of the utility model when only matching with the double-head expansion pipe.
Fig. 7 is a partial enlarged view at C in fig. 6.
Fig. 8 is an external structural schematic diagram of the present invention when only a single expansion pipe is used.
Fig. 9 is a schematic view of the internal structure of the single expansion pipe of the present invention.
Fig. 10 is a partial enlarged view of fig. 9 at D.
Fig. 11 is a partial enlarged view at E in fig. 9.
In the figure: 1-hexagonal-head screw rod, 2-double-head expansion pipe, 3-movable expansion head, 4-single-head expansion pipe, 5-fastening expansion head and 6-expansion notch.
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. 1-11, the present invention provides a technical solution:
detailed description of the preferred embodiment
A detachable expansion screw mainly comprises a base 1 and a top seat 2, and consists of a hexagonal head screw rod 1, a double-head expansion pipe 2, a movable expansion head 3, a single-head expansion pipe 4 and a fastening expansion head 5, the diameter of the upper half rod body of the hexagonal head screw rod 1 is larger than that of the lower half rod body thereof, the lower half rod body of the hexagonal head screw rod 1 is simultaneously matched with a double-head expansion pipe 2 and a single-head expansion pipe 4, wherein two ends of the double-end expansion pipe 2 are respectively provided with four expansion notches 6, two ends of the double-end expansion pipe 2 are respectively correspondingly matched with a movable expansion head 3, wherein only one end of the single-head expansion pipe 4 is provided with four expansion notches 6, one end of the single-head expansion pipe 4 provided with the expansion notches 6 is correspondingly matched with the movable expansion head 3, the bottom of the lower half rod body of the hexagonal head lead screw 1 is provided with external threads, and the bottom of the lower half rod body of the hexagonal head lead screw 1 is meshed with a fastening expansion head 5.
The double-end expansion pipe 2, the single-end expansion pipe 4 and the movable expansion head 3 are in clearance fit with the lower half rod body of the hexagonal head screw rod 1. The double-end expansion pipe 2 and the single-end expansion pipe 4 are mainly used for expansion and fastening of the hexagonal-head screw rod 1, and the double-end expansion pipe 2 and the single-end expansion pipe 4 are promoted to expand by utilizing the wedge-shaped inclination of the movable expansion head 3.
The fastening type expansion head 5 is meshed with the bottom of the lower half rod body of the hexagonal head screw rod 1 through threads, wherein internal threads matched with the external threads in the lower half rod body of the hexagonal head screw rod 1 are arranged inside the fastening type expansion head 5. And under the meshing action of the threads, the fastening expansion heads 5 stretch each movable expansion head 3 to enable the corresponding double-head expansion pipe 2 or single-head expansion pipe 4 to expand.
The outer side surface of the fastening type expansion head 5 is provided with anti-slip lines, wherein the surface of the anti-slip lines is subjected to heat treatment. The anti-skidding lines are arranged on the outer side surface of the fastening type expansion head 5, so that the friction force between the fastening type expansion head 5 and the hole can be effectively increased, and the hexagonal head screw rod 1 can be conveniently rotated to perform expansion fastening. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
The outer side surfaces of the two ends of the double-end expansion pipe 2 and the outer side surface of the end of the single-end expansion pipe 4 with the expansion notch 6 arranged therein are provided with anti-skid grains, wherein the surfaces of the anti-skid grains are subjected to heat treatment. The outer side surface of the end of the expansion notch 6 is arranged on the outer side surface of the two ends of the double-end expansion pipe 2 and the outer side surface of the end of the single-end expansion pipe 4, so that the friction force between the double-end expansion pipe 2 or the single-end expansion pipe 4 and the hole after expansion can be effectively increased, and the fastening effect is more prominent. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
Detailed description of the invention
The utility model provides a detachable inflation screw, mainly includes base 1 and footstock 2, comprises hexagon lead screw 1, double-end expansion pipe 2, movable inflation head 3 and fastening formula inflation head 5, the diameter of the first section pole body of hexagon lead screw 1 is greater than the diameter of its second section pole body, only the cooperation has double-end expansion pipe 2 in the second section pole body of hexagon lead screw 1, wherein four expansion cut 6 has been seted up respectively at the both ends of double-end expansion pipe 2, the both ends of double-end expansion pipe 2 correspond the cooperation respectively and have movable inflation head 3, the bottom of the second section pole body of hexagon lead screw 1 is provided with the external screw thread, the bottom meshing of the second section pole body of hexagon lead screw 1 has a fastening formula inflation head 5.
The double-end expansion pipe 2 and the movable expansion head 3 are in clearance fit with the lower half rod body of the hexagonal head screw rod 1. The double-end expansion pipe 2 is mainly used for expansion and fastening of the hexagonal-head screw rod 1, and the double-end expansion pipe 2 is used for promoting expansion of the movable expansion head 3 by utilizing the wedge-shaped inclination of the movable expansion head.
The fastening type expansion head 5 is meshed with the bottom of the lower half rod body of the hexagonal head screw rod 1 through threads, wherein internal threads matched with the external threads in the lower half rod body of the hexagonal head screw rod 1 are arranged inside the fastening type expansion head 5. The fastening expansion heads 5 stretch the movable expansion heads 3 under the meshing action of the threads, so that the double-end expansion pipe 2 is expanded.
The outer side surface of the fastening type expansion head 5 is provided with anti-slip lines, wherein the surface of the anti-slip lines is subjected to heat treatment. The anti-skidding lines are arranged on the outer side surface of the fastening type expansion head 5, so that the friction force between the fastening type expansion head 5 and the hole can be effectively increased, and the hexagonal head screw rod 1 can be conveniently rotated to perform expansion fastening. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
The outer side surfaces of the two ends of the double-end expansion pipe 2 are provided with anti-skid lines, wherein the surfaces of the anti-skid lines are subjected to heat treatment. The anti-skidding lines are arranged on the outer side surfaces of the two ends of the double-end expansion pipe 2, so that the friction force between the double-end expansion pipe 2 and the hole after expansion can be effectively increased, and the fastening effect is more prominent. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
Detailed description of the preferred embodiment
The utility model provides a detachable inflation screw, mainly includes base 1 and footstock 2, comprises hexagon head lead screw 1, movable inflation head 3, single-end expansion pipe 4 and fastening formula inflation head 5, the diameter of 1 first section pole body of hexagon head lead screw is greater than the diameter of its second section pole body, only the cooperation has many places single-end expansion pipe 4 in the second section pole body of hexagon head lead screw 1, wherein single-end expansion pipe 4 only one end has been seted up four expansion notches 6, the one end correspondence cooperation of establishing expansion notch 6 in single-end expansion pipe 4 has movable inflation head 3, the bottom of the second section pole body of hexagon head lead screw 1 is provided with the external screw thread, the bottom meshing of 1 second section pole body of hexagon head lead screw has a fastening formula inflation head 5.
The single-head expansion pipe 4 and the movable expansion head 3 are in clearance fit with the lower half rod body of the hexagonal head screw rod 1. The single-head expansion pipe 4 is mainly used for expansion fastening of the hexagonal-head screw rod 1, and the single-head expansion pipe 4 utilizes the wedge-shaped inclination of the movable expansion head 3 to promote the expansion.
The fastening type expansion head 5 is meshed with the bottom of the lower half rod body of the hexagonal head screw rod 1 through threads, wherein internal threads matched with the external threads in the lower half rod body of the hexagonal head screw rod 1 are arranged inside the fastening type expansion head 5. The fastening expansion heads 5 stretch the movable expansion heads 3 under the meshing action of the threads so as to expand the multi-position single-head expansion pipe 4.
The outer side surface of the fastening type expansion head 5 is provided with anti-slip lines, wherein the surface of the anti-slip lines is subjected to heat treatment. The anti-skidding lines are arranged on the outer side surface of the fastening type expansion head 5, so that the friction force between the fastening type expansion head 5 and the hole can be effectively increased, and the hexagonal head screw rod 1 can be conveniently rotated to perform expansion fastening. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
The outer side surfaces of the ends of the single-end expansion pipes 4, which are provided with the expansion notches 6, are provided with anti-skid lines, wherein the surfaces of the anti-skid lines are subjected to heat treatment. The outer side surface of the end of the single-head expansion pipe 4 with the expansion notch 6 is provided with anti-slip lines, so that the friction force between the single-head expansion pipe 4 and the opening can be effectively increased after expansion, and the fastening effect is more prominent. Wherein, the hardness and the wear resistance of the anti-skid lines after heat treatment are improved, and the anti-skid effect is better.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a detachable inflation screw which characterized in that: the expansion joint mainly comprises a hexagonal head screw rod (1), a double-end expansion pipe (2), a movable expansion head (3), a single-end expansion pipe (4) and a fastening type expansion head (5), wherein the diameter of the upper half rod body of the hexagonal head screw rod (1) is larger than that of the lower half rod body of the hexagonal head screw rod, the lower half rod body of the hexagonal head screw rod (1) can be matched with the double-end expansion pipe (2) or the single-end expansion pipe (4), wherein four expansion notches (6) are respectively arranged at two ends of the double-end expansion pipe (2), the movable expansion head (3) is correspondingly matched at two ends of the double-end expansion pipe (2), the four expansion notches (6) are arranged at only one end of the single-end expansion pipe (4), the movable expansion head (3) is correspondingly matched at one end with the expansion notches (6) arranged in the single-end expansion pipe (4), and an external thread is arranged at the bottom of the lower half rod body of the hexagonal, the bottom of the lower half section of the bar body of the hexagonal head screw rod (1) is meshed with a fastening expansion head (5).
2. The removable expansion screw of claim 1, further comprising: the double-end expansion pipe (2), the single-end expansion pipe (4) and the movable expansion head (3) are in clearance fit with the lower half-section rod body of the hexagonal head screw rod (1).
3. The removable expansion screw of claim 1, further comprising: the fastening type expansion head (5) is meshed with the bottom of the lower half rod body of the hexagonal head screw rod (1) through threads, and internal threads matched with the external threads in the lower half rod body of the hexagonal head screw rod (1) are arranged inside the fastening type expansion head (5).
4. The removable expansion screw of claim 1, further comprising: the outer side surface of the fastening type expansion head (5) is provided with anti-skid grains, wherein the surface of the anti-skid grains is subjected to heat treatment.
5. The removable expansion screw of claim 1, further comprising: the outer side surfaces of the two ends of the double-end expansion pipe (2) and the outer side surface of the end of the single-end expansion pipe (4) with the expansion notch (6) arranged therein are provided with anti-skid grains, and the surface of the anti-skid grains is subjected to heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302500.4U CN213511576U (en) | 2020-10-16 | 2020-10-16 | Detachable expansion screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022302500.4U CN213511576U (en) | 2020-10-16 | 2020-10-16 | Detachable expansion screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213511576U true CN213511576U (en) | 2021-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022302500.4U Active CN213511576U (en) | 2020-10-16 | 2020-10-16 | Detachable expansion screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213511576U (en) |
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2020
- 2020-10-16 CN CN202022302500.4U patent/CN213511576U/en active Active
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