CN212959422U - Be used for fixed screw of using of cement wall teaching blackboard - Google Patents
Be used for fixed screw of using of cement wall teaching blackboard Download PDFInfo
- Publication number
- CN212959422U CN212959422U CN202021895281.9U CN202021895281U CN212959422U CN 212959422 U CN212959422 U CN 212959422U CN 202021895281 U CN202021895281 U CN 202021895281U CN 212959422 U CN212959422 U CN 212959422U
- Authority
- CN
- China
- Prior art keywords
- screw
- connecting block
- cement wall
- teaching blackboard
- fixing
- 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.)
- Expired - Fee Related
Links
- 239000004568 cement Substances 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 7
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Images
Landscapes
- Drawing Aids And Blackboards (AREA)
Abstract
The utility model discloses a be used for fixed screw of using of cement wall teaching blackboard, including the screw head, the lower extreme of screw head is provided with the toper connecting block, and the lower extreme of toper connecting block is provided with the screw mobile jib, and the surface of screw mobile jib is provided with the smooth portion, and the surface of smooth portion is provided with the opening, and the lower extreme of screw mobile jib is connected with the drill bit. This a be used for fixed apron that can strengthen fixed shank and cross recess through setting up inside for cement wall teaching blackboard, can reach in the use, through rotating the cross recess, drive the rotation of connecting rod, lead to the shank to move down, the shank can be opened, thereby strengthen and the effort between the wall body, the stability of screw has been improved, simultaneously through the effect of apron, can not make the inside accumulation lime-ash layer of cross recess, can not make the cross recess damage, the convenience when having improved the dismantlement.
Description
Technical Field
The utility model relates to a fixed screw technical field specifically is a be used for fixed screw of using of cement wall teaching blackboard.
Background
The screw is a tool for fastening the parts of the object step by utilizing the physics and mathematical principles of the inclined circular rotation and friction of the object. Screws are a common term for fasteners, a common spoken word. At present, current screw includes the screw rod, and the one end an organic whole of screw rod is provided with the regulating block, and the regulating groove has been seted up to the one end that the screw rod was kept away from to the regulating block, and the one end that the regulating block was kept away from to the screw rod is sharp-pointed portion. When fastening the shingle nail, make the sharp-pointed part of screw rod conflict shingle nail earlier, then rotate the regulating block, the regulating block will drive the screw rod and rotate to realize the screw fastening blackboard.
The prior art has the following defects or problems:
the existing cement wall surface blackboard fixing screw is usually used for drilling a small hole in a wall body under the action of an electric drill and then fixing the fixing screw through the inside of a rotary inlet hole, and the fixing mode is generally poor in fixing effect, is easy to loosen after a long time and enables a fixing part to easily fall off; meanwhile, in the using process, the head cross groove of the screw is easy to accumulate a dust layer, the cross groove is also damaged, and the screw is not easy to clean and can influence the disassembling process when being disassembled.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's weak point, provide a be used for fixed screw of using of cement wall teaching blackboard to reach fixed effectual, difficult not hard up, quick detachable purpose simultaneously.
In order to achieve the above object, the utility model provides a following technical scheme: a screw for fixing a cement wall teaching blackboard comprises a screw head part, wherein a conical connecting block is arranged at the lower end of the screw head part, a screw main rod is arranged at the lower end of the conical connecting block, a smooth part is arranged on the outer surface of the screw main rod, an opening is formed in the outer surface of the smooth part, a drill bit is connected to the lower end of the screw main rod, an inner cavity is formed in the screw head part, an inner rotating head is arranged at the top end of the inner cavity, a connecting rod is connected to the lower end of the inner rotating head, a threaded part is arranged at the lower end of the connecting rod, a threaded connecting block is arranged on the outer surface of the threaded part, a leg part is connected to the lower end of the threaded connecting block, a cover plate is arranged at, the center department of inside rotating head is provided with cross recess, the inside spring that is provided with of lower extreme of connecting block, the one end of spring is connected with the slider, the one end of slider is connected with the dead lever, the one end of dead lever is connected with the runner.
As the utility model discloses a preferred technical scheme, the size of a dimension of connecting rod and the inside size of a dimension phase-match of inner chamber, the connecting rod passes through the inner chamber and is connected with the rotation of screw mobile jib.
As the utility model discloses a preferred technical scheme, the opening divide into four groups, and even arrange on smooth portion, the shank divide into four groups, and even arrange in the threaded connection piece bottom, the size of a dimension of open-ended matches with the size of a dimension of shank.
As the utility model discloses a preferred technical scheme, threaded connection piece and connecting rod threaded connection.
As the utility model discloses a preferred technical scheme, the spread groove divide into two sets ofly, and inside size and connecting block size phase-match, the shape of bottom one side of spread groove is triangle-shaped.
As the utility model discloses a preferred technical scheme, slider and connecting block sliding connection.
As the preferred technical scheme of the utility model, the one end of shank is the tilt state, and with open-ended one end sliding connection.
Compared with the prior art, the utility model provides a be used for fixed screw of using of cement wall teaching blackboard possesses following beneficial effect:
1. according to the screw for fixing the blackboard for the cement wall surface teaching, the leg part which can be opened at the inner part is arranged, the connecting block can move downwards due to the threaded connection between the threaded connecting block and the rod through the rotation of the connecting rod, so that the leg part is driven to move, in the moving process, the acting force between the whole body and the wall body can be increased through the action of the opening on the leg part, and the fixity of the screw is greatly improved;
2. this a be used for fixed screw of using of cement wall teaching blackboard, through setting up the apron, at long-term fixed in-process, the cross recess is inside can not accumulate the ash bed, can not make the cross recess damage, when dismantling, only need dismantle the apron, can dismantle the screw, make the process of dismantling can not receive the influence.
Drawings
FIG. 1 is a schematic view of a screw structure for fixing a cement wall surface teaching blackboard of the present invention;
FIG. 2 is a schematic view of the internal structure of the screw for fixing the blackboard on the cement wall surface;
FIG. 3 is a schematic view of a screw cover plate for fixing a blackboard used for cement wall teaching according to the present invention;
fig. 4 is the utility model relates to a be used for fixed screw local structure schematic diagram of using of cement wall teaching blackboard.
In the figure: 1. a screw head; 2. a conical connecting block; 3. a main screw rod; 4. a smooth portion; 5. an opening; 6. a drill bit; 7. an inner cavity; 8. an inner rotating head; 9. a connecting rod; 10. a threaded portion; 11. a threaded connection block; 12. a leg portion; 13. a cover plate; 14. connecting blocks; 15. connecting grooves; 16. a cross groove; 17. a spring; 18. a slider; 19. a rotating wheel; 20. and (5) fixing the rod.
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. 1-4, in this embodiment: a screw for fixing a cement wall teaching blackboard comprises a screw head part 1, wherein a conical connecting block 2 is arranged at the lower end of the screw head part 1, a screw main rod 3 is arranged at the lower end of the conical connecting block 2, a smooth part 4 is arranged on the outer surface of the screw main rod 3, an opening 5 is arranged on the outer surface of the smooth part 4, a drill bit 6 is connected with the lower end of the screw main rod 3, an inner cavity 7 is arranged in the screw head part 1, an inner rotating head 8 is arranged at the top end in the inner cavity 7, a connecting rod 9 is connected with the lower end of the inner rotating head 8, a threaded part 10 is arranged at the lower end of the connecting rod 9, a threaded connecting block 11 is arranged on the outer surface of the threaded part 10, a leg part 12 is connected with the lower end of the threaded connecting block 11, the center of the inner rotating head 8 is provided with a cross groove 16, a spring 17 is arranged inside the lower end of the connecting block 14, one end of the spring 17 is connected with a sliding block 18, one end of the sliding block 18 is connected with a fixed rod 20, and one end of the fixed rod 20 is connected with a rotating wheel 19.
In the embodiment, the size of the connecting rod 9 is matched with the size of the inner cavity 7, the connecting rod 9 is rotatably connected with the screw main rod 3 through the inner cavity 7, the structure mainly has the advantages that double fixation is realized through the effect of the inner structure in the process of fixing the blackboard by the screws, the fixing effect is improved, and the blackboard cannot shake or fall off; the openings 5 are divided into four groups and are uniformly distributed on the smooth part 4, the leg parts 12 are divided into four groups and are uniformly distributed at the bottom of the threaded connecting block 11, the size of the openings 5 is matched with that of the leg parts 12, and mainly in the fixing process, the screws can be uniformly stressed through the action between the leg parts 12 and a wall body, so that the stability of the screws is improved; the threaded connecting block 11 is in threaded connection with the connecting rod 9, and the threaded connecting block 11 is driven to move under the action of the rod when the main body of the screw enters the hollow part, so that the operation process is simple and labor-saving; the connecting grooves 15 are divided into two groups, the size of the inner part of each connecting groove 15 is matched with the size of the connecting block 14, one side of the bottom of each connecting groove 15 is triangular, after the screws are fixed, due to the fact that an ash layer and moisture exist in the air, the inner part of the cross groove 16 can be rusted for a long time, when people disassemble the screws, the disassembling process is difficult and the operation is not easy due to the ash layer and the corrosion, and the cross groove 16 can be well protected through the cover plate 13; the sliding block 18 is connected with the connecting block 14 in a sliding manner, and in the installation process of the cover plate 13, the sliding block 18 has a certain fixing effect on the rotating wheel 19, so that the rotating wheel 19 is not dislocated or damaged, can be well fixed when in use, and can return the rotating wheel 19 to an initial state after being disassembled; one end of the leg part 12 is in an inclined state and is connected with one end of the opening 5 in a sliding mode, and the leg part 12 and the opening 5 are both inclined in shape, so that the leg part 12 is easy to open under the action of an inclined surface in the process that the leg part 12 moves downwards, the fixing process is labor-saving, and the operation is easy.
The utility model discloses a theory of operation and use flow: in the using process, firstly, a fixing hole which is slightly smaller than the diameter of a screw is drilled on a wall by a drilling machine, then one end of the fixing screw is inserted into the hole, the head part 1 of the screw is installed in the machine under the action of a screw installer, the screw enters the hole, then an internal rotating head 8 is rotated by a screwdriver, the rotation of a rotating head drives a rod to rotate, as the threaded connecting block 11 is clamped with an opening 5, the threaded connecting block 11 moves downwards in the certain process that the rod drives the threaded connecting block 11, so that a leg part 12 can be gradually opened, the acting force between the leg part 12 and the wall is increased, the stable fixing effect is realized, after the fixing is finished, the connecting block 14 at the lower end of a cover plate 13 is aligned with a connecting groove 15 to be pressed, and the acting force between the connecting block and the connecting groove can cause the rotating wheel 19 to move inwards, when moving to the bottom, the turning wheel 19 is clamped at one side of the connecting groove 15 by the action of the spring 17, and then the function of protecting the cross groove 16 is achieved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides a be used for fixed screw of using of cement wall teaching blackboard, includes screw head (1), the lower extreme of screw head (1) is provided with toper connecting block (2), the lower extreme of toper connecting block (2) is provided with screw mobile jib (3), the surface of screw mobile jib (3) is provided with smooth portion (4), the surface of smooth portion (4) is provided with opening (5), the lower extreme of screw mobile jib (3) is connected with drill bit (6), its characterized in that: the inner cavity (7) is arranged inside the screw head part (1), the inner rotating head (8) is arranged at the top end inside the inner cavity (7), the lower end of the inner rotating head (8) is connected with a connecting rod (9), the lower end of the connecting rod (9) is provided with a threaded part (10), the outer surface of the threaded part (10) is provided with a threaded connecting block (11), the lower end of the threaded connecting block (11) is connected with a leg part (12), the upper end of the screw head part (1) is provided with a cover plate (13), the lower end of the cover plate (13) is connected with a connecting block (14), the lower end of the connecting block (14) is provided with a connecting groove (15) connected with the screw head part (1), the center of the inner rotating head (8) is provided with a cross groove (16), a spring (17) is arranged inside the lower end of the, one end of the sliding block (18) is connected with a fixed rod (20), and one end of the fixed rod (20) is connected with a rotating wheel (19).
2. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that: the size of a dimension of connecting rod (9) and the inside size of a dimension of inner chamber (7) phase-match, connecting rod (9) are connected with screw mobile jib (3) through inner chamber (7) rotation.
3. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that: the openings (5) are divided into four groups and evenly distributed on the smooth part (4), the leg parts (12) are divided into four groups and evenly distributed at the bottom of the threaded connecting block (11), and the size of the openings (5) is matched with that of the leg parts (12).
4. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that: the threaded connecting block (11) is in threaded connection with the connecting rod (9).
5. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that: the connecting grooves (15) are divided into two groups, the size of the inner part of each connecting groove is matched with the size of the connecting block (14), and the shape of one side of the bottom of each connecting groove (15) is triangular.
6. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that: the sliding block (18) is connected with the connecting block (14) in a sliding mode.
7. The screw for fixing the cement wall teaching blackboard according to claim 1, characterized in that; one end of the leg part (12) is in an inclined state and is connected with one end of the opening (5) in a sliding way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021895281.9U CN212959422U (en) | 2020-09-02 | 2020-09-02 | Be used for fixed screw of using of cement wall teaching blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021895281.9U CN212959422U (en) | 2020-09-02 | 2020-09-02 | Be used for fixed screw of using of cement wall teaching blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212959422U true CN212959422U (en) | 2021-04-13 |
Family
ID=75365227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021895281.9U Expired - Fee Related CN212959422U (en) | 2020-09-02 | 2020-09-02 | Be used for fixed screw of using of cement wall teaching blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212959422U (en) |
-
2020
- 2020-09-02 CN CN202021895281.9U patent/CN212959422U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109898652B (en) | Steel part connecting structure and connecting method thereof | |
| CN212959422U (en) | Be used for fixed screw of using of cement wall teaching blackboard | |
| CN111745793B (en) | Hollow square pile forming die of concrete | |
| CN203098517U (en) | Double-head self-tapping screw assembly | |
| CN210660917U (en) | Expansion bolt capable of improving fixing effect | |
| CN2256805Y (en) | Hand-operated drilling machine | |
| CN211714461U (en) | Assembled wallboard leveling mechanism | |
| CN112663892A (en) | Alloy keel frame for building decoration | |
| CN209308585U (en) | A kind of door pocket cable architecture for wall doorframe U.S. seam | |
| CN208749046U (en) | A kind of construction site trowel | |
| CN205841425U (en) | Double end self tapping part | |
| CN220238961U (en) | Explosion-proof camera shell spraying device | |
| CN206748307U (en) | A kind of noiseless laborsaving screw is followed closely into device | |
| CN220954095U (en) | Curtain wall with anti-falling function | |
| CN208309900U (en) | A kind of assembly concrete connection structure | |
| CN206722350U (en) | A kind of adjustable putty is scraped | |
| CN221702855U (en) | Corner furred ceiling structure | |
| CN221001833U (en) | Be used for wall putty knife coater | |
| CN216519081U (en) | Round head big washer tip screw with cutting tail | |
| CN209812240U (en) | Convenient five metals electric tool who dismantles | |
| KR100702159B1 (en) | Fixing Device for Parasol | |
| CN216951166U (en) | Detachable expansion bolt | |
| CN220699452U (en) | Screwdriver structure with protection structure | |
| CN219680081U (en) | Assembled glass vestibule cabinet | |
| CN220644969U (en) | A heat preservation wallboard assembly structure for building |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210413 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |