CN103629498B - For the pneumatic-typed Middle shaft assembly of photographing foot stand - Google Patents
For the pneumatic-typed Middle shaft assembly of photographing foot stand Download PDFInfo
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- CN103629498B CN103629498B CN201210311223.0A CN201210311223A CN103629498B CN 103629498 B CN103629498 B CN 103629498B CN 201210311223 A CN201210311223 A CN 201210311223A CN 103629498 B CN103629498 B CN 103629498B
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Abstract
A kind of pneumatic-typed Middle shaft assembly for photographing foot stand, its structure comprises, lower stretching tube, there is a camera support plate the top of upper stretching tube, camera support plate has a protrusion, protrude and be used for fixed camera, upper stretching tube external diameter is less than lower stretching bore, upper stretching tube can slide in lower stretching tube, in the bottom pipe of upper stretching tube, there is a limit assembly, limit assembly is followed stretching tube and is slided up and down in lower stretching tube, upper stretching tube external diameter has a locking device, locking device is positioned at the top of lower stretching tube, in the bottom of lower stretching tube, in its pipe, plunger is installed, plunger has a center hole, plunger lower end is connected with spring carrier arm conversion part, spring carrier arm conversion part has a center hole, coupling hook in hole, hook one end is in lower stretching tube, the other end stretches out lower stretching tube, plunger and the lower stretching seal of tube are arranged, in stretching tube, plunger, a cavity is formed between the device that hook is formed and limit assembly, this cavity is pressure chamber.
Description
Technical field
The present invention relates to the pneumatic-typed Middle shaft assembly for photographing foot stand, belong to photographic goods field.
Background technique
The axis of existing photographing foot stand is all single tubular structure, camera or photographic goods are supported for supporting, but there is a defect in this structure: due to high-end camera, such as slr camera, camera lens and fuselage all have larger weight, the rigid construction of traditional axis can not provide cushion effect, and under the condition of acute variation or motion, moving up and down of camera is easy to receive recoil force and causes the precision components of camera internal to damage.
Summary of the invention
Technical problem to be solved by this invention will provide a kind of good leak tightness, practicality, easily pneumatic-typed Middle shaft assembly, and it has antidetonation and buffer capacity, effectively can ensure camera, especially the safety of valuable photomoduel under fortuitous event, avoids camera damaged.
For achieving the above object, technological scheme of the present invention is as follows:
A kind of pneumatic-typed Middle shaft assembly for photographing foot stand, its structure comprises stretching tube, lower stretching tube, there is a camera support plate the top of upper stretching tube, camera support plate has a protrusion, protrude and be used for fixed camera, the external diameter of upper stretching tube is less than the internal diameter of lower stretching tube, upper stretching tube can slide in lower stretching tube, in the bottom pipe of upper stretching tube, there is a limit assembly, limit assembly is followed stretching tube and is slided up and down in lower stretching tube, the external diameter of lower stretching tube has a locking device, locking device is positioned at the top of lower stretching tube, in lower trombone slide, plunger is installed, plunger has a center hole, plunger lower end is connected with spring carrier arm conversion part, spring carrier arm conversion part has a center hole, hook is connected with in the center hole of spring carrier arm conversion part, one end of hook is in lower stretching tube, the other end stretches out lower stretching tube, plunger and the lower stretching seal of tube are arranged, in stretching tube, plunger, a cavity is formed between the device that hook is formed and limit assembly, described cavity is pressure chamber.
Further: stretching tube bottom diameter has screw thread, lower stretching tube bottom diameter has screw thread.
Further: described limit assembly is a Step Shaft structure, have one to hold greatly and a small end, the small end of described limit assembly is connected in the internal diameter of stretching tube bottom, the small end of limit assembly has screw thread, the screw thread of limit assembly small end screw thread and upper stretching tube bottom diameter matches, and the Outside diameter of limit assembly is greater than the diameter of stretching tube, is equal to or less than the internal diameter of lower stretching tube, the center of limit assembly has an annular groove, and described limit assembly is spacing aluminum component.
Further: the bottom centre of described limit assembly groove has a through hole, has screw thread in hole; Also comprise a gas-tight assembly, described gas-tight assembly is connected with limit assembly, the profile of described gas-tight assembly is a cylindrical structure, at cylindrical center, there is a groove, the bottom of groove has a through hole, placing screws is used in hole, the external diameter of gas-tight assembly is equal to or less than the internal diameter of lower stretching tube, be greater than limit assembly Outside diameter, the through hole of gas-tight assembly is identical with the attachment hole internal diameter of limit assembly, limit assembly and gas-tight assembly are linked together by screw, and described gas-tight assembly is gas-tight plastics, and screw and gas-tight assembly joint have rubber pad.
Further: the profile of described plunger is a cylindrical body, the cylindrical of plunger has screw thread, screw thread on screw thread on described plunger and lower stretching tube bottom diameter matches, in the centre of plunger, there is an annular groove, the bottom centre of groove has a center hole, center hole internal diameter has screw thread, and described center hole is through hole; Described spring carrier arm conversion part is a Step Shaft structure, have one to hold greatly and a small end, the small end cylindrical of spring carrier arm conversion part has screw thread, the screw thread of spring carrier arm conversion part small end and the screw thread of plunger center hole match, the small end of spring carrier arm conversion part is connected in the center hole of plunger, the large end of spring carrier arm conversion part is connected to the lower end surface of plunger, and spring carrier arm conversion part has a center hole, through hook in hole.
Further: described hook is substantially L-shaped, it has a long-armed and galianconism, long-armedly be positioned at lower stretching tube, long-armed upper end has screw thread, be threaded nut, and in atmosphere, the free end of galianconism has a hook portion upwards to galianconism, between nut and spring carrier arm conversion part, hook is connected with the hook spring that automatically resets.
Further: described locking device is a tubular structure, the structure of locking device comprises the outer bung flange of locking, bung flange in locking, locking card, the bottom diameter of locking outer bung flange has screw thread, lock outer bung flange internal diameter top and there is an annular groove, in locking, the cylindrical upper end of bung flange has screw thread, in locking, bung flange internal diameter has an annular to protrude, the diameter of the diameter that annular is protruded and upper stretching tube adapts, the centre that annular is protruded has an annular groove, seal ring is placed in described groove, the screw thread of locking outer bung flange matches with the screw thread of bung flange in locking, in locking, bung flange is threaded connection on the outer bung flange internal diameter of locking, the cylindrical upper end of described locking card has a protrusion, the shape size of described protrusion adapts with the groove of the outer bung flange of locking, protrude snap in lock outer bung flange groove in, be connected with the outer bung flange of locking, the locking internal diameter size of card and the internal diameter size of upper stretching tube adapt to, locking device is connected with upper stretching tube, stretching tube in locking, cannot lift after upper stretching tube after locking.
Further: described reeded one end of plunger tool is connected with a sealing cover, described sealing cover is a Step Shaft structure, have one to hold greatly and a small end, described sealing cover Outside diameter is less than the internal diameter of lower stretching tube, the small end cylindrical of sealing cover has screw thread, the small end center of sealing cover has a groove, the bottom centre of groove has a through hole, the upper end of through hole is arc, be used in hole placing rubber air valve, sealing cover covers on the groove of plunger, when plunger coordinates with sealing cover, the upper end of plunger recess is designed with screw thread, the outer round thread of described plunger recess threaded upper ends and sealing cover small end matches, sealing cover is threaded connection on plunger, the structure of described rubber air valve is divided into head and afterbody, afterbody is one cylindrical, head is a semicircle, the head of rubber air valve and the arcuate shape of sealing cover center hole upper end adapt, the head of rubber air valve is seated in the arcuate socket of sealing cover center hole upper end, the diameter of rubber air valve afterbody is less than the diameter of sealing cover center hole, when upwards lifting hook, the end upwards jack-up rubber air valve of hook, rubber air valve moves up, clearance channel is formed between rubber air valve afterbody and sealing cover center hole, air-flow enters pressure chamber by gap, stretching tube slip up or down in realization, when rubber air valve head is seated in the actuated position of sealing cover center hole, pressure chamber is sealed, upper stretching tube stops sliding.
Further: in lower stretching tube lower end, to there is a hole, the side of plunger has a vent in the horizontal direction, the hole of described lower stretching tube and plunger vent are on a horizontal line, the leakage port of common composition stretching tube, plunger through hole lower end and the large end joint of spring carrier arm conversion part have rubber ring, and hook diameter and spring carrier arm conversion part through hole internal diameter size adapt.
Further: the internal diameter of described spring carrier arm conversion part center hole is greater than the diameter of hook, gap is formed between spring carrier arm conversion part center hole and hook, the upper end of spring carrier arm conversion part center hole has a cone shape hole, the upper end of cone shape hole is large end, lower end is small end, rubber air valve is placed in center hole cone shape hole, described rubber air valve and spring carrier arm conversion part cone shape hole size shape adapt, the center of rubber air valve has a hole, hole internal diameter is identical with hook diameter, link up with the center hole through rubber air valve, when upwards lifting hook, rubber air valve is followed hook and is moved up, the clearance channel of ventilation is formed between rubber air valve and spring carrier arm conversion part center hole, air-flow enters pressure chamber by gap, upper stretching tube realizes slip up or down, when linking up with when leaving behind, rubber air valve is adjacent in the cone shape hole of spring carrier arm conversion part center hole, venting channels is closed, pressure chamber is sealed, upper stretching tube stops sliding.
Accompanying drawing explanation
Fig. 1 is upper stretching tube schematic diagram,
Fig. 2 is the schematic diagram of upper stretching tube when connecting gas-tight assembly,
Fig. 3 is the schematic diagram of lower stretching pipe when having a sealing cover,
Fig. 4 is upper and lower stretching tube combination schematic diagram,
Upper and lower stretching tube combination schematic diagram when Fig. 5 is for there being a gas-tight assembly,
Fig. 6 is the partial enlarged drawing at the B place of Fig. 5,
Fig. 7 is the partial enlarged drawing at the A place of Fig. 5,
Fig. 8 is the schematic diagram of lower stretching pipe when having a leakage port,
Fig. 9 is the schematic diagram of lower stretching pipe when having a cone rubber air valve,
The pipe that stretches under Figure 10 has the partial enlarged drawing during work of cone rubber air valve,
Figure 11 is limit assembly structure sectional view,
Figure 12 is the structure sectional view of limit assembly when having a center hole,
Figure 13 is gas-tight modular construction sectional view,
Figure 14 is piston structure sectional view,
Figure 15 is sealing cover structure sectional view,
Figure 16 is the sectional view of spring carrier arm conversion part,
Figure 17 is the schematic diagram that hook sleeve has spring,
Figure 18 is the partial schematic diagram that locking device is connected with upper stretching tube,
Figure 19 is the C place partial enlarged drawing of Figure 18,
Figure 20 is locking device sectional view,
Figure 21 is locking device plan view,
Figure 22 is the worm's eye view of rubber air valve in embodiment 1,
Figure 23 is the plan view of rubber air valve in embodiment 1,
Figure 24 is hook schematic diagram
Figure 25 is embodiment three principle schematic.
Embodiment
In conjunction with following embodiment, the object that can better understand the present invention and technological scheme and effect.Following embodiment is only preferred enforcement of the present invention; for the person of ordinary skill of the art; under the premise without departing from the principles of the invention; some improvement and change can also be made; the size, ratio etc. of such as parts; these improve and change also should be considered as protection scope of the present invention, protection scope of the present invention contain by the equivalents of its claim and claim.
To develop simultaneously embodiment referring to accompanying drawing, the present invention is described in more detail.
For the pneumatic-typed Middle shaft assembly of photographing foot stand, structure comprises stretching tube 1, lower stretching tube 5, and there is a camera support plate a the top of upper stretching tube, camera support plate has a screw thread and protrudes t, protrudes t and is used for fixed camera.
Embodiment one
For the pneumatic-typed Middle shaft assembly of photographing foot stand, in the bottom diameter of upper stretching tube 1, there is spacing aluminum component 2, described spacing aluminum component 2 is a Step Shaft structure, have one and hold a 2-2-1 and small end 2-1-1 greatly, small end 2-1-1 is connected in the internal diameter of stretching tube bottom, small end 2-1-1 cylindrical has screw thread, the screw thread of small end screw thread and upper stretching tube bottom diameter matches, the Outside diameter of limit assembly is greater than the diameter of stretching tube, be equal to or less than the internal diameter of lower stretching tube, the center of spacing aluminum component 2 has an annular groove 2-3-1, locking device 15 is installed on the middle part of stretching tube external diameter, the internal diameter lower end of lower stretching tube 5 is connected with plunger 9, the profile of plunger 9 is a cylindrical body, the cylindrical of plunger has one section of screw thread, screw thread on screw thread on plunger 9 and lower stretching tube bottom diameter matches, there is in the centre of plunger an annular groove 9-3, the bottom centre of groove 9-3 has a center hole 9-2, in the 9-2 of hole, there is screw thread, center hole 9-2 is through hole, spring carrier arm conversion part 10 is a Step Shaft structure, have one and hold a 10-2 and small end 10-1 greatly, the small end 10-1 cylindrical of spring carrier arm conversion part 10 there is screw thread, the screw thread of spring carrier arm conversion part small end 10-1 and the screw thread in plunger screw hole match, the small end 10-1 of spring carrier arm conversion part is connected in the tapped hole of plunger, the large end 10-2 of spring carrier arm conversion part is connected to the lower end surface of plunger, spring carrier arm conversion part 10 has a center hole 10-3, through hook 7 in hole, the large end of spring carrier arm conversion part is connected to the lower end surface of plunger 9, the diameter of hook 7 is less than the diameter of spring carrier arm conversion part 10 center hole, certain gap H1 is produced between hook 7 and spring carrier arm conversion part 10, the shape of hook 7 is substantially L-shaped, it has an a long-armed 7-1 and galianconism 7-5, long-armed 7-1 is positioned at lower stretching tube, the upper end of long-armed 7-1 has screw thread 7-4, be threaded nut 7-2, galianconism 7-5 in atmosphere, the free end of galianconism has a hook portion upwards, at the long arm end of hook, stretch out between the hook of spring carrier arm conversion part and nut and there is the hook spring 7-3 that automatically resets, the internal diameter of hook spring of automatically reseting is greater than hook external diameter, the external diameter of hook spring of automatically reseting is less than the external diameter of hook upper cap nut.Plunger 9 is connected with sealing cover 8, sealing cover 8 is a Step Shaft structure, have one and hold a 8-3 and small end 8-1 greatly, the small end cylindrical of sealing cover has screw thread, the small end center of sealing cover has a groove 8-4, the bottom centre of groove 8-4 has a through hole 8-2, the upper end of through hole 8-2 is arc, be used in hole placing rubber air valve, sealing cover covers on the groove of plunger, when plunger coordinates with sealing cover, the upper end of plunger recess is designed with screw thread, the outer round thread of described plunger recess threaded upper ends and sealing cover small end matches, sealing cover is threaded connection on plunger, the diameter of rubber air valve afterbody is less than the diameter of sealing cover center hole 8-2, when upwards lifting hook 7, the end upwards jack-up rubber air valve of hook 7, rubber air valve 6 moves up, clearance channel H2 is formed between rubber air valve afterbody and sealing cover center hole, air-flow enters in lower stretching tube by gap H1, the air entered enters pressure chamber from passage H2, stretching tube slip up or down in realization, when rubber air valve head is seated in the actuated position of sealing cover center hole, pressure chamber is sealed, upper stretching tube stops sliding.
Locking device 15 is a tubular structure, the structure of locking device comprises the outer bung flange 15-1 of locking, bung flange 15-2 in locking, locking card 15-3, the internal diameter of locking outer bung flange 15-1 has screw thread, lock outer bung flange internal diameter top and there is an annular groove 15-7, the cylindrical of the interior bung flange of locking has screw thread, internal diameter has an annular and protrude 15-5, the centre that annular protrudes 15-5 has a groove 15-4, seal ring is placed in described groove 15-4, the screw thread of locking outer bung flange matches with the screw thread of bung flange in locking, in locking, bung flange is threaded connection on the outer bung flange internal diameter of locking, the cylindrical upper end of described locking card has a protrusion 15-6, the shape size of described protrusion 15-6 adapts with the groove 15-7 of the outer bung flange of locking, locking card snaps in groove 15-7 by protruding 15-6, be connected with the outer bung flange of locking, the upper stretching tube of locking device locking, after locking, upper stretching tube cannot lift.
When upwards lifting upper stretching tube, when lifting locking card 15-3 position, in locking card 15-3 prevention, stretching tube continuation upwards.Locking card 15-3 internal diameter is less than the large end external diameter of spacing aluminum component.Spacing aluminum component conflicts with locking card 15-3, cannot upwards continue to stretch, to reach spacing object.Upper stretching tube, as deviate from lower stretching tube, will lose basic air pressure function.Limit stoper plays a protective role; The upper stretching tube of locking device locking, after locking, upper stretching tube cannot lift.
Embodiment two
Embodiment two is roughly the same with embodiment one, and unique difference is connected with gas-tight plastics in the lower end of the spacing aluminum component of upper stretching tube.The effect of gas-tight plastics is used to be the sealing effects strengthening stretching tube further.When the lower end of spacing aluminum component is connected with gas-tight plastics, the structure of the spacing aluminum component in the structure of spacing aluminum component and embodiment 1 is different, its difference is, at the bottom portion of groove of spacing aluminum component, there is a center hole 2-3, described center hole 2-3 is through hole, described spacing aluminum component 2 is a Step Shaft structure, have one and hold a 2-2 and small end 2-1 greatly, small end 2-1 is connected in the internal diameter of stretching tube bottom, small end 2-1 cylindrical has screw thread, the screw thread of small end screw thread and upper stretching tube bottom diameter matches, the Outside diameter of limit assembly is greater than the diameter of stretching tube, be equal to or less than the internal diameter of lower stretching tube, the center of spacing aluminum component 2 has an annular groove 2-4, the bottom centre of groove 2-4 has a through hole 2-3, placing screws in the 2-3 of hole, gas-tight plastics 3 are a cylindrical structure, there is at cylindrical center a groove 3-2, the bottom of groove 3-2 has a through hole 3-3, placing screws is used in the 3-3 of hole, the external diameter of gas-tight plastics is equal to or less than the internal diameter of lower stretching tube, be greater than spacing aluminum component Outside diameter, the through hole 3-3 of gas-tight plastics is identical with the attachment hole 2-3 internal diameter of spacing aluminum component, and spacing aluminum component and gas-tight plastics are linked together by screw.Screw and gas-tight plastics 3 joint have rubber pad 4, use rubber pad 4 enhanced leaktightness effect, prevent gas-tight plastics from damaging because of the pressuring action of nut, extend its working life.
Embodiment three:
Embodiment three is only the seal arrangement in lower stretching tube with the difference of above-described embodiment.
In lower stretching tube lower end, plunger 9 linking springs hook conversion part 10, the center hole of plunger 9 and the diameter of spring carrier arm conversion part 10 small end adapt, now, therebetween very close to each other, the lower end of plunger center hole and spring carrier arm conversion part small end has rubber ring 16, the diameter of hook and the diameter of spring carrier arm conversion part center hole adapt, in lower stretching tube lower end, there is a hole, the side of plunger has a vent in the horizontal direction, the hole of described lower stretching tube and plunger vent are on a horizontal line, the leakage port 18 of common composition stretching tube, spring carrier arm conversion part 10 is rotated counterclockwise, spring carrier arm conversion part top plan is lower than lower stretching tube side leakage port, air in lower stretching tube from the side leakage port 18 releases, to reach disappointing object.
Embodiment four:
In lower stretching tube lower end, plunger 9 linking springs hook conversion part 10, the center hole of plunger 9 and the diameter of spring carrier arm conversion part 10 small end adapt, now, therebetween very close to each other, the upper end of spring carrier arm conversion part center hole has a cone shape hole, the upper end of cone shape hole is large end, lower end is small end, rubber air valve 17 is placed in center hole cone shape hole, described rubber air valve 17 adapts with spring carrier arm conversion part cone shape hole size shape, the center of rubber air valve 17 has a hole, hole internal diameter is identical with hook diameter, link up with the center hole through rubber air valve, the diameter of hook is less than the internal diameter of spring carrier arm conversion part center hole, gap H1 is produced between spring carrier arm conversion part lower end and hook, when upwards lifting hook, rubber air valve 17 is followed hook and is moved up, the clearance channel of ventilation is formed between rubber air valve 17 and spring carrier arm conversion part center hole, air-flow enters pressure chamber by gap H1, stretching tube slip up or down in realization, when hook falls, rubber air valve is adjacent in the cone shape hole of spring carrier arm conversion part center hole, venting channels is closed, pressure chamber is sealed, upper stretching tube stops sliding.
When in all embodiments, user declines fast as thought, can hook upwardly, hook top jack-up Sealing can manually be exitted.
Claims (9)
1. the pneumatic-typed Middle shaft assembly for photographing foot stand, its structure comprises stretching tube, lower stretching tube, there is a camera support plate the top of upper stretching tube, camera support plate has a protrusion, protrude and be used for fixed camera, the external diameter of upper stretching tube is less than the internal diameter of lower stretching tube, upper stretching tube can slide in lower stretching tube, in the bottom pipe of upper stretching tube, there is a limit assembly, limit assembly is followed stretching tube and is slided up and down in lower stretching tube, the external diameter of lower stretching tube has a locking device, locking device is positioned at the top of lower stretching tube, in lower stretching tube, plunger is installed, plunger has a center hole, plunger lower end is connected with spring carrier arm conversion part, spring carrier arm conversion part has a center hole, hook is connected with in the center hole of spring carrier arm conversion part, one end of hook is in lower stretching tube, the other end stretches out lower stretching tube, plunger and the lower stretching seal of tube are arranged, in stretching tube, plunger, a cavity is formed between the device that hook is formed and limit assembly, described cavity is pressure chamber, it is characterized in that: described locking device is a tubular structure, the structure of locking device comprises the outer bung flange of locking, bung flange in locking, locking card, the bottom diameter of locking outer bung flange has screw thread, lock outer bung flange internal diameter top and there is an annular groove, in locking, the cylindrical upper end of bung flange has screw thread, in locking, bung flange internal diameter has an annular to protrude, the diameter of the diameter that annular is protruded and upper stretching tube adapts, the centre that annular is protruded has an annular groove, seal ring is placed in described groove, the screw thread of locking outer bung flange matches with the screw thread of bung flange in locking, in locking, bung flange is threaded connection on the outer bung flange internal diameter of locking, the cylindrical upper end of described locking card has a protrusion, the shape size of described protrusion adapts with the groove of the outer bung flange of locking, protrude snap in lock outer bung flange groove in, be connected with the outer bung flange of locking, the locking internal diameter size of card and the internal diameter size of upper stretching tube adapt, locking device is connected with lower stretching tube, stretching tube in locking, after locking, upper stretching tube cannot lift.
2. the pneumatic-typed Middle shaft assembly for photographing foot stand according to claim 1, is characterized in that: upper stretching tube bottom diameter has screw thread, and lower stretching tube bottom diameter has screw thread.
3. the pneumatic-typed Middle shaft assembly for photographing foot stand according to claim 2, it is characterized in that: described limit assembly is a Step Shaft structure, have one to hold greatly and a small end, the small end of described limit assembly is connected in the internal diameter of stretching tube bottom, the small end of limit assembly has screw thread, the screw thread of limit assembly small end screw thread and upper stretching tube bottom diameter matches, the Outside diameter of limit assembly is greater than the diameter of stretching tube, be equal to or less than the internal diameter of lower stretching tube, the center of limit assembly has an annular groove, and described limit assembly is spacing aluminum component.
4. the pneumatic-typed Middle shaft assembly for photographing foot stand according to claim 3, is characterized in that: the bottom centre of described limit assembly groove has a through hole, has screw thread in hole; Also comprise a gas-tight assembly, described gas-tight assembly is connected with limit assembly, the profile of described gas-tight assembly is a cylindrical structure, at cylindrical center, there is a groove, the bottom of groove has a through hole, placing screws is used in hole, the external diameter of gas-tight assembly is equal to or less than the internal diameter of lower stretching tube, be greater than limit assembly Outside diameter, the through hole of gas-tight assembly is identical with the through hole internal diameter of limit assembly, limit assembly and gas-tight assembly are linked together by screw, and described gas-tight assembly is gas-tight plastics, and screw and gas-tight assembly joint have rubber pad.
5. the pneumatic-typed Middle shaft assembly for photographing foot stand according to claim 2, it is characterized in that: the profile of described plunger is a cylindrical body, the cylindrical of plunger has screw thread, screw thread on screw thread on described plunger and lower stretching tube bottom diameter matches, in the centre of plunger, there is an annular groove, the bottom centre of groove has a center hole, and center hole internal diameter has screw thread, and described center hole is through hole; Described spring carrier arm conversion part is a Step Shaft structure, have one to hold greatly and a small end, the small end cylindrical of spring carrier arm conversion part has screw thread, the screw thread of spring carrier arm conversion part small end and the screw thread of plunger center hole match, the small end of spring carrier arm conversion part is connected in the center hole of plunger, the large end of spring carrier arm conversion part is connected to the lower end surface of plunger, and spring carrier arm conversion part has a center hole, through hook in hole.
6. the pneumatic-typed Middle shaft assembly for photographing foot stand according to claim 2, it is characterized in that: described hook is substantially L-shaped, it has a long-armed and galianconism, long-armedly be positioned at lower stretching tube, long-armed upper end has screw thread, and be threaded nut, galianconism in atmosphere, the free end of galianconism has a hook portion upwards, between nut and spring carrier arm conversion part, hook is connected with the hook spring that automatically resets.
7. the pneumatic-typed Middle shaft assembly for photographing foot stand according to any one of claim 1-6, it is characterized in that: described reeded one end of plunger tool is connected with a sealing cover, described sealing cover is a Step Shaft structure, have one to hold greatly and a small end, described sealing cover Outside diameter is less than the internal diameter of lower stretching tube, the small end cylindrical of sealing cover has screw thread, the small end center of sealing cover has a groove, the bottom centre of groove has a through hole, the upper end of through hole is arc, be used in hole placing rubber air valve, sealing cover covers on the groove of plunger, when plunger coordinates with sealing cover, the upper end of plunger recess is designed with screw thread, the outer round thread of described plunger recess threaded upper ends and sealing cover small end matches, sealing cover is threaded connection on plunger, the structure of described rubber air valve is divided into head and afterbody, afterbody is one cylindrical, head is a semicircle, the head of rubber air valve and the arcuate shape of sealing cover center hole upper end adapt, the head of rubber air valve is seated in the arcuate socket of sealing cover center hole upper end, the diameter of rubber air valve afterbody is less than the diameter of sealing cover center hole, when upwards lifting hook, the end upwards jack-up rubber air valve of hook, rubber air valve moves up, clearance channel is formed between rubber air valve afterbody and sealing cover center hole, air-flow enters pressure chamber by gap, stretching tube slip up or down in realization, when rubber air valve head is seated in the actuated position of sealing cover center hole, pressure chamber is sealed, upper stretching tube stops sliding.
8. the pneumatic-typed Middle shaft assembly for photographing foot stand according to any one of claim 1-6, it is characterized in that: in lower stretching tube lower end, there is a hole, the side of plunger has a vent in the horizontal direction, the hole of described lower stretching tube and plunger vent are on a horizontal line, the leakage port of common composition stretching tube, plunger through hole lower end and the large end joint of spring carrier arm conversion part have rubber ring, and hook diameter and spring carrier arm conversion part center hole internal diameter size adapt.
9. the pneumatic-typed Middle shaft assembly for photographing foot stand according to any one of claim 1-6, it is characterized in that: the internal diameter of described spring carrier arm conversion part center hole is greater than the diameter of hook, gap is formed between spring carrier arm conversion part center hole and hook, the upper end of spring carrier arm conversion part center hole has a cone shape hole, the upper end of cone shape hole is large end, lower end is small end, rubber air valve is placed in the cone shape hole of center hole, described rubber air valve and spring carrier arm conversion part cone shape hole size shape adapt, the center of rubber air valve has a hole, hole internal diameter is identical with hook diameter, link up with the center hole through rubber air valve, when upwards lifting hook, rubber air valve is followed hook and is moved up, the clearance channel of ventilation is formed between rubber air valve and spring carrier arm conversion part center hole, air-flow enters pressure chamber by gap, upper stretching tube realizes slip up or down, when linking up with when leaving behind, rubber air valve is adjacent in the cone shape hole of spring carrier arm conversion part center hole, venting channels is closed, pressure chamber is sealed, upper stretching tube stops sliding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210311223.0A CN103629498B (en) | 2012-08-29 | 2012-08-29 | For the pneumatic-typed Middle shaft assembly of photographing foot stand |
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| CN201210311223.0A CN103629498B (en) | 2012-08-29 | 2012-08-29 | For the pneumatic-typed Middle shaft assembly of photographing foot stand |
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| CN103629498A CN103629498A (en) | 2014-03-12 |
| CN103629498B true CN103629498B (en) | 2016-02-10 |
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| CN109995895B (en) * | 2017-12-29 | 2021-02-02 | Oppo广东移动通信有限公司 | Functional assembly, electronic device and control method thereof |
| CN111717378B (en) * | 2020-07-08 | 2022-04-05 | 济南职业学院 | Four rotor unmanned aerial vehicle |
| CN112432031B (en) * | 2020-11-13 | 2022-05-17 | 天津矿山工程有限公司 | Poisonous gas detection device in tunnel for mine engineering |
| CN112773137B (en) * | 2020-12-20 | 2024-04-16 | 中山市瑞米智能科技有限公司 | Automatic material taking machine and material taking method |
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| DE19955085A1 (en) * | 1999-11-15 | 2001-05-17 | Maul Jakob Gmbh | Adjustable column for supporting seat or stand comprises two telescopic tubes with airtight space between them, clamping screw allowing height to be adjusted and valve at bottom of column allowing air in space between tubes to be forced out |
| CN201173372Y (en) * | 2008-03-27 | 2008-12-31 | 刘昊 | Shooting bracket centre shaft device |
| DE102007054238A1 (en) * | 2007-11-12 | 2009-04-09 | Provita-Medizintechnik Klever Gmbh & Co. Kg | Infusion stand for use with medical instrument, has sealing element locking end of outer pipe, another sealing element locking end of inner pipe, and throttle allowing air to be exhausted, where air is provided between elements |
| CN101432563A (en) * | 2006-04-27 | 2009-05-13 | 捷信股份有限公司 | Support for video-photographic equipment |
| CN201259078Y (en) * | 2008-09-19 | 2009-06-17 | 陈庆元 | Novel foot rest locking device |
| CN101627257A (en) * | 2007-08-01 | 2010-01-13 | 株式会社莱特波 | The floodlight of adjustable prop and this adjustable prop of use |
| CN202082566U (en) * | 2011-06-07 | 2011-12-21 | 张奉果 | Locking mechanism between pin tubes of tripod |
-
2012
- 2012-08-29 CN CN201210311223.0A patent/CN103629498B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19955085A1 (en) * | 1999-11-15 | 2001-05-17 | Maul Jakob Gmbh | Adjustable column for supporting seat or stand comprises two telescopic tubes with airtight space between them, clamping screw allowing height to be adjusted and valve at bottom of column allowing air in space between tubes to be forced out |
| CN101432563A (en) * | 2006-04-27 | 2009-05-13 | 捷信股份有限公司 | Support for video-photographic equipment |
| CN101627257A (en) * | 2007-08-01 | 2010-01-13 | 株式会社莱特波 | The floodlight of adjustable prop and this adjustable prop of use |
| DE102007054238A1 (en) * | 2007-11-12 | 2009-04-09 | Provita-Medizintechnik Klever Gmbh & Co. Kg | Infusion stand for use with medical instrument, has sealing element locking end of outer pipe, another sealing element locking end of inner pipe, and throttle allowing air to be exhausted, where air is provided between elements |
| CN201173372Y (en) * | 2008-03-27 | 2008-12-31 | 刘昊 | Shooting bracket centre shaft device |
| CN201259078Y (en) * | 2008-09-19 | 2009-06-17 | 陈庆元 | Novel foot rest locking device |
| CN202082566U (en) * | 2011-06-07 | 2011-12-21 | 张奉果 | Locking mechanism between pin tubes of tripod |
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| Publication number | Publication date |
|---|---|
| CN103629498A (en) | 2014-03-12 |
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