CN115163636B - Screw thread fastener of instrument installation exempts from - Google Patents
Screw thread fastener of instrument installation exempts from Download PDFInfo
- Publication number
- CN115163636B CN115163636B CN202210929886.2A CN202210929886A CN115163636B CN 115163636 B CN115163636 B CN 115163636B CN 202210929886 A CN202210929886 A CN 202210929886A CN 115163636 B CN115163636 B CN 115163636B
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- screw
- limiting
- movable
- rod
- movable plate
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- 238000009434 installation Methods 0.000 title claims abstract description 37
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 41
- 230000000694 effects Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 239000002341 toxic gas Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/06—Specially-shaped heads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M13/00—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles
- F16M13/02—Other supports for positioning apparatus or articles; Means for steadying hand-held apparatus or articles for supporting on, or attaching to, an object, e.g. tree, gate, window-frame, cycle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Clamps And Clips (AREA)
Abstract
The invention discloses a tool-free mounting thread fastening device, in particular to the technical field of thread fastening devices, which comprises a thread fastening mechanism arranged on a combustible gas detector and a mounting fixed block, wherein the thread fastening mechanism comprises a screw rod and a connecting screw head, one end of the connecting screw head, which is far away from the screw rod, is provided with a mounting groove, the inner wall of the mounting groove is provided with a movable plate, the inner wall of the mounting groove is provided with a plurality of limiting tooth grooves, both sides of the movable plate are fixedly provided with three limiting teeth corresponding to the limiting tooth grooves, and the inside of the limiting tooth is provided with a movable cavity. According to the invention, the movable plate and the extending telescopic plate are arranged, so that the screw rod and the connecting screw head can be rotated in a relatively labor-saving manner, and further, the screw fastening mechanism can be directly installed, so that the tool-free direct installation is realized, the installation is relatively simple and convenient, and meanwhile, the screw fastening mechanism can be detached for inspection under the condition of no tool, and the use is relatively convenient.
Description
Technical Field
The invention relates to the technical field of threaded fastening devices, in particular to a tool-free installation threaded fastening device.
Background
The flammable gas detector is a device which is fixedly arranged at a place where flammable, explosive or toxic gas exists and is used for monitoring the concentration of the gas. Is widely applicable to industrial sites such as petroleum, chemical industry and the like. Is a combustible and toxic gas explosion-proof type transducer which can be displayed, operated by infrared remote control and output by 4-20 mA. The combustible gas detector is generally mounted and fixed in a pipeline hanging type or wall-mounted type, and is fixed by a plurality of screw fastening devices when connected.
At present, when the flammable gas detector is installed, the flammable gas detector is generally fixedly connected by using bolts, the installation mode needs to carry tools at any time, the installation is carried out by using a plurality of tools, the installation and the disassembly are relatively inconvenient, when the flammable gas detector has some small problems, and when people do not have tools at the side, the flammable gas detector cannot be disassembled and overhauled, so that the flammable gas detector is inconvenient to use.
Therefore, it is necessary to invent a tool-free threaded fastener to solve the above-mentioned problems.
Disclosure of Invention
The invention aims to provide a tool-free mounting screw fastening device, which can rotate a screw rod and a connecting screw head in a relatively labor-saving manner by arranging a movable plate and an extended telescopic plate, and further can directly mount a screw fastening mechanism, so that the tool-free mounting screw fastening device is simple and convenient to mount, and can be detached for inspection under the condition of no tool, and the tool-free mounting screw fastening device is relatively convenient to use, so that the defects in the technology are overcome.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a exempt from screw thread fastener of instrument installation, includes the screw thread fastening mechanism of installing on combustible gas detector and installation fixed block, screw thread fastening mechanism includes screw rod and connection spiral shell head, screw rod one end and connection spiral shell head one end fixed connection, the mounting groove has been seted up to the one end that the screw rod was kept away from to the connection spiral shell head, the mounting groove inner wall is equipped with the fly leaf, a plurality of spacing tooth grooves have been seted up on the mounting groove inner wall, the fly leaf both sides are all fixed to be equipped with three spacing tooth corresponding with spacing tooth groove, intermesh between spacing tooth and the spacing tooth groove, the movable cavity has been seted up to spacing tooth inside, the movable cavity inside is equipped with two spacing fly leaf, spacing fly leaf outer end contacts with the movable cavity inner wall, spacing fly leaf outside is fixed to be equipped with the expansion plate, two the expansion plate outside passes the fly leaf both sides respectively, the expansion plate outside is established in spacing tooth front side, two the fixed spring that is equipped with between the spacing fly leaf.
Preferably, the first cavity has been seted up inside the screw rod, the second cavity has been seted up in the first cavity wall, the inside dwang that is equipped with of first cavity, dwang one end passes the screw rod and connects the spiral shell head and with the screw rod with connect and rotate between the spiral shell head and be connected, rotate between dwang other end and the first cavity inner wall and be connected, the inside a plurality of threaded rods that rotate that are equipped with of dwang, rotate threaded rod one end and pass first cavity inner wall and extend to inside the second cavity, rotate and be connected between threaded rod and the first cavity inner wall, the dwang outer end is fixed and is equipped with two first bevel gears, rotate threaded rod other end fixed be equipped with second bevel gear, a plurality of second bevel gear respectively with two first bevel gears between the intermeshing, the inside three arc fly leaf that is equipped with of second cavity, the fixed movable block that is equipped with in arc fly leaf outer end, two thread grooves have been seted up to the movable block inner, rotate one end and pass the screw hole and extend into the thread groove inside, rotate one end and screw rod and thread groove inside, rotate between one end and the thread groove all set up through the fixed connection, the inside a plurality of screw rod, the inside limit joint is connected with the inside the screw rod, the inside limit joint is mutually connected with the outside the thread, the limit joint is mutually connected.
Preferably, square groove has been seted up to dwang one end, square inslot portion is equipped with square stopper, square stopper outer end contacts with square groove inner wall, square stopper one end is fixed to be equipped with square pole, square pole one end pass dwang one end and with fly leaf rear end fixed connection, the fly leaf of being convenient for drives the dwang and rotates.
Preferably, the outer end of the screw rod is provided with a gasket, and the gasket is arranged at the rear end of the connecting screw head, so that the connecting position can be more compact.
Preferably, the sucker is fixedly arranged at the rear end of the combustible gas detector, so that the combustible gas detector can be conveniently fixed during installation, and an installer can fix the combustible gas detector without using one hand.
Preferably, the combustible gas detector rear side is connected with first connection structure, first connection structure includes the mounting panel, be connected through three screw thread fastening mechanism between mounting panel and combustible gas detector and the installation fixed block, the mounting panel top is equipped with two U type and detains, screw rod outer end threaded connection has the nut, the nut is established at the mounting panel rear end, just has the installation of hanging of combustible gas detector.
Preferably, the combustible gas detector rear side is connected with second connection structure, second connection structure includes the wallboard, three spread groove has been seted up to the wallboard front end, three screw rods on combustible gas detector and the installation fixed block extend into three spread groove respectively inside, the wall installation of being convenient for combustible gas detector.
The invention also discloses a using method of the tool-free mounting screw thread fastening device, which comprises the following specific steps:
step one: half of the movable plate is pulled out of the mounting groove, so that the limiting teeth on the movable plate are still clamped in the limiting tooth grooves, at the moment, the telescopic plate and the limiting movable plate can move outwards under the action of the elasticity of the springs, the two telescopic plates can extend to two sides of the movable plate, at the moment, hands of a person can directly pinch the telescopic plate and the movable plate to rotate, the telescopic plate and the movable plate can drive the connecting screw head and the screw rod to rotate, and therefore the screw fastening mechanism can be directly mounted at a position to be mounted without using external tools such as a spanner, and the mounting is convenient;
step two: when the screw thread fastening mechanism is installed to the position needing to be installed, the movable plate is pulled outwards continuously, at the moment, the limiting teeth are separated from the inside of the limiting tooth grooves, the telescopic plate and the movable plate are rotated, the square rod can drive the square rod to rotate, the square rod drives the square limiting block and the rotating rod to rotate, the rotating rod drives the first bevel gear to rotate, the first bevel gear drives three second bevel gears meshed with the first bevel gear to rotate, the second bevel gears drive the rotating threaded rod to rotate, the arc-shaped movable plate and the movable block move outwards along with the rotation of the rotating threaded rod due to the threaded connection between the rotating threaded rod and the threaded holes and the threaded grooves, limiting clamping teeth at the outer end of the movable block can extend outwards from the communication openings, the limiting clamping teeth can be tightly clamped on the surface contacting with the limiting clamping teeth, after installation is completed, the telescopic plate is pressed into the movable cavity, and then the movable plate is inserted back into the installation groove, so that the limiting teeth are clamped into the limiting tooth grooves, and the movable block and the threaded fastening mechanism can be fixed in a limited manner, and the screw thread fastening mechanism can be further reinforced.
In the technical scheme, the invention has the technical effects and advantages that:
1. through setting up movable plate and extending expansion plate, can be comparatively laborsaving rotate screw rod and connection spiral shell head, and then can directly install screw fastening mechanism, realized exempting from the direct installation of instrument for the installation is comparatively simple and convenient, also can dismantle under the condition that does not have the instrument simultaneously and inspect, and it is comparatively convenient to use;
2. the movable block and the limiting latch are used for clamping, contacting and limiting the contact surface of the screw rod, so that the screw rod is connected more tightly and firmly, the screw thread fastening mechanism can be reinforced, loosening of the screw thread fastening mechanism is prevented, and the screw thread fastening mechanism is high in practicality.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a three-dimensional cross-sectional structure of a connecting screw head according to the present invention;
FIG. 3 is a schematic perspective sectional view of the movable plate of the present invention;
FIG. 4 is a schematic view of a screw in a perspective cross-sectional configuration of the present invention;
FIG. 5 is an enlarged schematic view of the structure of FIG. 4A according to the present invention;
FIG. 6 is a schematic view of a three-dimensional cross-sectional structure of an arcuate movable plate and movable block of the present invention;
FIG. 7 is a schematic view of a partial perspective cross-sectional structure of a turning lever of the present invention;
FIG. 8 is a schematic perspective view of the combustible gas detector and suction cup of the invention;
FIG. 9 is a schematic view of a combustible gas detector suspension mounting structure of the invention;
FIG. 10 is a schematic view of a combustible gas detector suspension mounting structure of the invention;
FIG. 11 is a schematic view of a wall-mounted structure of a flammable gas detector of the present invention.
Reference numerals illustrate:
1. a combustible gas detector; 2. installing a fixed block; 3. a screw; 4. connecting the screw heads; 5. a mounting groove; 6. a movable plate; 7. limiting tooth grooves; 8. limit teeth; 9. a movable cavity; 10. a limiting movable plate; 11. a telescoping plate; 12. a spring; 13. a first cavity; 14. a second cavity; 15. a rotating lever; 16. rotating the threaded rod; 17. a first bevel gear; 18. a second bevel gear; 19. an arc-shaped movable plate; 20. a movable block; 21. a threaded hole; 22. a thread groove; 23. a communication port; 24. limiting latch teeth; 25. a square groove; 26. a square limiting block; 27. square bar; 28. a gasket; 29. a suction cup; 30. a mounting plate; 31. a U-shaped buckle; 32. a nut; 33. a wallboard; 34. and a connecting groove.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
The invention provides a tool-free mounting screw fastening device shown in figures 1, 2 and 3, which comprises a screw fastening mechanism arranged on a combustible gas detector 1 and a mounting fixing block 2, wherein the screw fastening mechanism comprises a screw 3 and a connecting screw head 4, one end of the screw 3 is fixedly connected with one end of the connecting screw head 4, one end of the connecting screw head 4 far away from the screw 3 is provided with a mounting groove 5, the inner wall of the mounting groove 5 is provided with a movable plate 6, the inner wall of the mounting groove 5 is provided with a plurality of limiting tooth grooves 7, two sides of the movable plate 6 are fixedly provided with three limiting teeth 8 corresponding to the limiting tooth grooves 7, the limiting teeth 8 are meshed with the limiting tooth grooves 7, a movable cavity 9 is formed in the limiting tooth 8, two limiting movable plates 10 are arranged in the movable cavity 9, the outer ends of the limiting movable plates 10 are contacted with the inner wall of the movable cavity 9, the outer sides of the limiting movable plates 10 are fixedly provided with telescopic plates 11, the outer sides of the telescopic plates 11 respectively penetrate through two sides of the movable plates 6, the outer sides of the telescopic plates 11 are arranged at the front sides of the limiting tooth 8, and a limiting spring 12 is fixedly arranged between the two limiting movable plates 10.
The movable plate 6 is pulled out of the mounting groove 5 in half, the limiting teeth 8 on the movable plate 6 are still clamped in the limiting tooth grooves 7, at the moment, the telescopic plate 11 and the limiting movable plate 10 can move outwards under the action of the elastic force of the spring 12, the two telescopic plates 11 can extend to two sides of the movable plate 6, at the moment, the telescopic plate 11 and the movable plate 6 can be directly pinched by hands to rotate, the telescopic plate 11 and the movable plate 6 can drive the connecting screw head 4 and the screw 3 to rotate, so that the screw fastening mechanism can be directly mounted at a position where the connecting screw head 3 needs to be mounted, tools such as an external wrench can not be used, the mounting is convenient, the movable plate 6 and the extending telescopic plate 11 can be rotated to the screw 3 in a relatively labor-saving manner, and then the screw fastening mechanism can be directly mounted, so that the mounting is simple and convenient without tools, and the mounting is also convenient to detach and check.
The invention provides a tool-free screw thread fastening device shown in figures 1, 4, 5, 6 and 7, wherein a first cavity 13 is formed in a screw rod 3, a second cavity 14 is formed in the wall of the first cavity 13, a rotating rod 15 is arranged in the first cavity 13, one end of the rotating rod 15 penetrates through the screw rod 3 and a connecting screw head 4 and is in rotary connection with the screw rod 3 and the connecting screw head 4, the other end of the rotating rod 15 is in rotary connection with the inner wall of the first cavity 13, a plurality of rotating threaded rods 16 are arranged in the rotating rod 15, one end of each rotating threaded rod 16 penetrates through the inner wall of the first cavity 13 and extends into the second cavity 14, the rotating threaded rods 16 are in rotary connection with the inner wall of the first cavity 13, two first bevel gears 17 are fixedly arranged at the outer ends of the rotating rods 15, the other end of the rotary threaded rod 16 is fixedly provided with a second bevel gear 18, a plurality of second bevel gears 18 are meshed with two first bevel gears 17 respectively, three arc-shaped movable plates 19 are arranged in the second cavity 14, movable blocks 20 are fixedly arranged at the outer ends of the arc-shaped movable plates 19, two threaded holes 21 are formed in the outer ends of the arc-shaped movable plates 19, two thread grooves 22 are formed in the inner ends of the movable blocks 20, one end of the rotary threaded rod 16 penetrates through the threaded holes 21 and extends into the thread grooves 22, one end of the rotary threaded rod 16 is connected with the threaded holes 21 and the thread grooves 22 through threads, three communication ports 23 are formed in the outer ends of the threaded rods 3, the communication ports 23 are communicated with the interior of the second cavity 14, a plurality of limit clamping teeth 24 are fixedly arranged at the outer ends of the movable blocks 20, and the limit clamping teeth 24 are arranged inside the communication ports 23.
Square groove 25 has been seted up to dwang 15 one end, square groove 25 inside is equipped with square stopper 26, square stopper 26 outer end and square groove 25 inner wall contact, square stopper 26 one end is fixed to be equipped with square pole 27, square pole 27 one end passes dwang 15 one end and with fly leaf 6 rear end fixed connection.
After the screw fastening mechanism is installed to the position to be installed, the movable plate 6 is pulled outwards continuously, at the moment, the limiting teeth 8 are separated from the inside of the limiting tooth grooves 7, the telescopic plate 11 and the movable plate 6 are rotated, the telescopic plate 11 and the movable plate 6 can drive the square rod 27 to rotate, the square rod 27 drives the square limiting block 26 and the rotating rod 15 to rotate, the rotating rod 15 drives the first bevel gear 17 to rotate, the first bevel gear 17 drives the three second bevel gears 18 meshed with the first bevel gear 17 to rotate, the second bevel gear 18 drives the rotating threaded rod 16 to rotate, due to the fact that the rotating threaded rod 16 is connected with the threaded holes 21 and the threaded grooves 22 in a threaded mode, the arc-shaped movable plate 19 and the movable block 20 can move outwards along with the rotation of the rotating threaded rod 16, the limiting clamping teeth 24 at the outer end of the movable block 20 can extend outwards from the communicating opening 23, the limiting clamping teeth 24 can be clamped tightly on the surface in contact with the movable block, after the installation is completed, the movable plate 11 is pressed into the movable cavity 9, the movable plate 6 is inserted into the installation groove 5, the limiting teeth 8 are clamped into the inside the limiting tooth grooves 7, and the movable block 20 and the limiting tooth 24 can be fastened tightly, and the movable block 20 can be fastened tightly and prevented from contacting with each other.
The invention provides a tool-free mounting threaded fastening device as shown in fig. 1, 8, 9 and 10, wherein a first connecting structure is connected to the rear side of a combustible gas detector 1, the first connecting structure comprises a mounting plate 30, the mounting plate 30 is connected with the combustible gas detector 1 and a mounting fixing block 2 through three threaded fastening mechanisms, two U-shaped buckles 31 are arranged at the top end of the mounting plate 30, nuts 32 are connected to the outer end of a screw rod 3 in a threaded manner, and the nuts 32 are arranged at the rear end of the mounting plate 30.
The outer end of the screw rod 3 is provided with a gasket 28, and the gasket 28 is arranged at the rear end of the connecting screw head 4.
The rear end of the combustible gas detector 1 is fixedly provided with a sucker 29.
When the combustible gas detector 1 is hung and installed on a pipeline, the rear end of the combustible gas detector 1 is attached to the front end of the installation plate 30, air in the sucker 29 is pressed out, the combustible gas detector 1 is adsorbed to the front end of the installation plate 30 through the sucker 29, so that people are not required to fix the combustible gas detector 1 by hands all the time during installation, the combustible gas detector 1 is installed on the installation plate 30 by using the threaded fastening mechanism, the screw 3 passes through the installation hole in the installation fixing block 2 and is rotated to enter the rear end of the installation plate 30, the nut 32 is installed at the outer end of the screw 3 at the rear end of the installation plate 30, the fixing of the combustible gas detector 1 is more fastened, and after the combustible gas detector 1 is fixed on the installation plate 30, the installation plate 30 and the combustible gas detector 1 are hung and fixed on the pipeline by using the U-shaped buckle 31.
The invention provides a tool-free installation screw fastening device as shown in fig. 1, 8 and 11, wherein a second connecting structure is connected to the rear side of a combustible gas detector 1, the second connecting structure comprises a wall plate 33, three connecting grooves 34 are formed in the front end of the wall plate 33, and three screws 3 on the combustible gas detector 1 and an installation fixing block 2 extend into the three connecting grooves 34 respectively.
When the combustible gas detector 1 is mounted by attaching to the wall, the rear end of the combustible gas detector 1 is attached to the wall plate 33 in the same way, the combustible gas detector 1 is adsorbed to the wall plate 33 through the sucking disc 29, the screw 3 is screwed into the connecting groove 34, then the movable block 20 and the limiting latch 24 are clamped to the inner wall of the connecting groove 34, and therefore the effect of expansion can be achieved, and the combustible gas detector 1 is firmly mounted and fixed.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
1. The utility model provides a screw thread fastener of instrument installation exempts from, includes the screw thread fastening mechanism of installing on combustible gas detector (1) and installation fixed block (2), its characterized in that: the screw fastening mechanism comprises a screw (3) and a connecting screw head (4), one end of the screw (3) is fixedly connected with one end of the connecting screw head (4), one end of the connecting screw head (4) away from the screw (3) is provided with a mounting groove (5), the inner wall of the mounting groove (5) is provided with a movable plate (6), the inner wall of the mounting groove (5) is provided with a plurality of limiting tooth grooves (7), three limiting teeth (8) corresponding to the limiting tooth grooves (7) are fixedly arranged on two sides of the movable plate (6), the limiting teeth (8) are meshed with the limiting tooth grooves (7), a movable cavity (9) is formed in the limiting tooth (8), two limiting movable plates (10) are arranged in the movable cavity (9), the outer ends of the limiting movable plates (10) are in contact with the inner wall of the movable cavity (9), the outer sides of the limiting movable plates (10) are fixedly provided with telescopic plates (11), the outer sides of the two telescopic plates (11) respectively penetrate through two sides of the movable plates (6), the outer sides of the telescopic plates (11) are fixedly arranged on the front of the limiting teeth (8), and the two limiting springs (12) are arranged between the two limiting springs (12);
the novel movable screw comprises a screw rod (3), a first cavity (13) is formed in the screw rod (3), a second cavity (14) is formed in the wall of the first cavity (13), a rotating rod (15) is arranged in the first cavity (13), one end of the rotating rod (15) penetrates through the screw rod (3) and the connecting screw head (4) and is rotationally connected with the screw rod (3) and the connecting screw head (4), the other end of the rotating rod (15) is rotationally connected with the inner wall of the first cavity (13), a plurality of rotating threaded rods (16) are arranged in the rotating rod (15), one end of the rotating threaded rod (16) penetrates through the inner wall of the first cavity (13) and extends to the inner wall of the second cavity (14), two first bevel gears (17) are fixedly arranged at the outer ends of the rotating rod (15), a plurality of second bevel gears (18) are respectively meshed with two first bevel gears (17), three arc-shaped movable plates (19) are arranged in the inner end of the rotating threaded rod (16) and the inner wall of the first cavity (13), two arc-shaped movable plates (19) are fixedly arranged at the outer ends of the rotating rod (15), two thread grooves (22) are formed in the inner end of the movable block (20), one end of the rotary threaded rod (16) penetrates through the threaded hole (21) and extends into the thread grooves (22), one end of the rotary threaded rod (16) is connected with the threaded hole (21) and the thread grooves (22) through threads, three communication ports (23) are formed in the outer end of the threaded rod (3), the communication ports (23) are communicated with the inside of the second cavity (14), a plurality of limiting clamping teeth (24) are fixedly arranged at the outer end of the movable block (20), and the limiting clamping teeth (24) are arranged in the communication ports (23);
square groove (25) have been seted up to dwang (15) one end, square groove (25) inside is equipped with square stopper (26), square stopper (26) outer end and square groove (25) inner wall contact, square stopper (26) one end is fixed to be equipped with square pole (27), square pole (27) one end passes dwang (15) one end and with fly leaf (6) rear end fixed connection.
2. A tool-less mount screw fastener device according to claim 1, wherein: the outer end of the screw rod (3) is provided with a gasket (28), and the gasket (28) is arranged at the rear end of the connecting screw head (4).
3. A tool-less mount screw fastener device according to claim 1, wherein: the rear end of the combustible gas detector (1) is fixedly provided with a sucker (29).
4. A tool-less mount screw fastener device according to claim 1, wherein: the gas detector is characterized in that a first connecting structure is connected to the rear side of the gas detector (1), the first connecting structure comprises a mounting plate (30), the mounting plate (30) is connected with the gas detector (1) and the mounting fixing block (2) through three screw thread fastening mechanisms, two U-shaped buckles (31) are arranged on the top end of the mounting plate (30), a nut (32) is connected to the outer end of the screw (3) in a threaded mode, and the nut (32) is arranged at the rear end of the mounting plate (30).
5. A tool-less mount screw fastener device according to claim 1, wherein: the combustible gas detector (1) rear side is connected with second connection structure, second connection structure includes wallboard (33), three spread groove (34) have been seted up to wallboard (33) front end, three screw rod (3) on combustible gas detector (1) and the installation fixed block (2) extend into inside three spread groove (34) respectively.
6. A tool-less mount screw fastener device according to any one of claims 1-5, wherein: the application method of the tool-free mounting thread fastening device comprises the following specific steps:
step one: half of the movable plate (6) is pulled out of the mounting groove (5), the limiting teeth (8) on the movable plate (6) are still clamped inside the limiting tooth grooves (7), at the moment, the telescopic plates (11) and the limiting movable plates (10) can move outwards under the action of the elastic force of the springs (12), the two telescopic plates (11) can extend to two sides of the movable plate (6), at the moment, hands of a person can directly pinch the telescopic plates (11) and the movable plate (6) to rotate, the telescopic plates (11) and the movable plate (6) can drive the connecting screw head (4) and the screw rod (3) to rotate, so that the screw fastening mechanism can be directly mounted at a position where the screw fastening mechanism needs to be mounted, an external wrench is not used, and the mounting is convenient;
step two: when the screw fastening mechanism is installed at a position where installation is needed, the movable plate (6) is pulled outwards continuously, at the moment, the limiting teeth (8) are separated from the inside of the limiting tooth grooves (7), the telescopic plate (11) and the movable plate (6) are rotated, the telescopic plate (11) and the movable plate (6) can drive the square rod (27) to rotate, the square rod (27) drives the square limiting block (26) and the rotating rod (15) to rotate, the rotating rod (15) drives the first bevel gear (17) to rotate, the first bevel gear (17) drives the three second bevel gears (18) meshed with the first bevel gear to rotate, the second bevel gear (18) drives the rotating threaded rod (16) to rotate, the arc-shaped movable plate (19) and the movable block (20) can move outwards along with the rotation of the rotating threaded rod (16), the limiting teeth (24) at the outer end of the movable block (20) can extend outwards from the communicating port (23), the limiting teeth (24) can be tightly clamped on the surface contacted with the rotating rod, the rotating threaded rod (18) drives the rotating threaded rod (16) to rotate, the rotating threaded rod (16) is connected with the threaded rod (21) and the movable plate (20) is pressed into the limiting tooth grooves (7) after the inner side of the movable plate (8) is installed, the movable plate (7) is inserted into the limiting tooth grooves (5), therefore, the movable block (20) and the limiting latch (24) are limited and fixed, and the screw fastening mechanism is further reinforced to prevent loosening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929886.2A CN115163636B (en) | 2022-08-02 | 2022-08-02 | Screw thread fastener of instrument installation exempts from |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929886.2A CN115163636B (en) | 2022-08-02 | 2022-08-02 | Screw thread fastener of instrument installation exempts from |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115163636A CN115163636A (en) | 2022-10-11 |
| CN115163636B true CN115163636B (en) | 2023-07-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210929886.2A Active CN115163636B (en) | 2022-08-02 | 2022-08-02 | Screw thread fastener of instrument installation exempts from |
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| Country | Link |
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| CN (1) | CN115163636B (en) |
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Also Published As
| Publication number | Publication date |
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| CN115163636A (en) | 2022-10-11 |
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