CN115182914A - Leg tube locking mechanism and tripod - Google Patents
Leg tube locking mechanism and tripod Download PDFInfo
- Publication number
- CN115182914A CN115182914A CN202110817333.3A CN202110817333A CN115182914A CN 115182914 A CN115182914 A CN 115182914A CN 202110817333 A CN202110817333 A CN 202110817333A CN 115182914 A CN115182914 A CN 115182914A
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- pipe body
- outer pipe
- locking
- lock
- rod
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 238000005336 cracking Methods 0.000 claims description 26
- 230000000149 penetrating effect Effects 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 230000004323 axial length Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000012634 fragment Substances 0.000 claims description 3
- 238000003860 storage Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 238000003754 machining Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003776 cleavage reaction Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000007017 scission Effects 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Images
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
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/10—Telescoping systems
- F16B7/14—Telescoping systems locking in intermediate non-discrete positions
- F16B7/1418—Telescoping systems locking in intermediate non-discrete positions with a clamping collar or two split clamping rings tightened by a screw or a cammed latch member
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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
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/32—Undercarriages for supports with three or more telescoping legs
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/56—Accessories
- G03B17/561—Support related camera accessories
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
Abstract
The invention discloses a foot tube locking mechanism, which comprises an outer tube body, wherein the end part of the outer tube body has the function of contracting the inner diameter; the end part of the inner pipe body is sleeved in the outer pipe body and can be shrunk and clamped by the end part of the outer pipe body; the positioning piece is sleeved on the overlapped part of the outer pipe body and the inner pipe body and has radial limiting and axial positioning on the outer pipe body; the locking unit is movably sleeved on the outer pipe body and comprises a body, a notch, a lock rod and a lock key, external force is applied to the lock key, and the notch can be extruded and reduced, so that the body radially clamps the outer pipe body, the positioning piece and the inner pipe body; the locking rod has the function of transversely adjusting the length, the transverse clamping force can be adjusted by matching the locking rod with the locking key, the elastic sheet of the outer side pipe body is matched with the positioning piece, and the vertical clamping force is correspondingly adjusted to lock the inner side pipe body. The invention also discloses a tripod. The invention utilizes the assembly connection of the positioning piece and the outer pipe body, and has simple and effective structure; the storage volume is small, and the carrying is convenient; the integral assembly structure is stable.
Description
Technical Field
The invention belongs to the technical field of photographic equipment, and particularly relates to a foot tube locking mechanism and a tripod.
Background
In order to adapt to the adjustment of the length of the leg tube of the supporting device in the field of photographic equipment, for example, in order to realize the adjustment of the length of the leg tube of the tripod, the leg tube is formed by sleeving a plurality of groups of inner tubes and outer tubes, and the leg tube is fixed by a wrench or a knob after the target length is adjusted. The leg tube locking structure in the current market is easy to lose efficacy after being used for a period of time, so that the locking strength is insufficient; the joint of some foot tube locking structures is longer, so that the overall volume is increased, and the use is inconvenient; or some pin tube locking structures need to be realized by means of adhesion, and at the moment, the adhesion part cannot be adjusted, so that the connecting structure is not flexible enough.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the foot tube locking mechanism which is simple to assemble, small in integral volume, stable in locking force and convenient to adjust and the tripod with the foot tube locking mechanism.
The technical scheme adopted by the invention for solving the technical problem is as follows: a leg locking mechanism comprising:
an outer tube body having at least two elastic pieces formed at an end portion thereof, the end portion having a function of contracting an inner diameter;
an inner tube body, the end of which is sleeved in the outer tube body and is clamped when the inner diameter of the end of the outer tube body is contracted;
the positioning piece is sleeved between the overlapped parts of the outer pipe body and the inner pipe body and has the functions of radial limiting and axial positioning on the outer pipe body;
the locking unit is movably sleeved outside the part, corresponding to the positioning part, of the outer pipe body and comprises a body, a notch formed in the body and capable of being in limit fit with the positioning part, a lock rod transversely penetrating through the notch of the body and a lock key, external force is applied to the lock key, and the notch can be extruded and reduced, so that the outer pipe body, the positioning part and the inner pipe body are radially clamped by the body;
the locking rod has the function of transversely adjusting the length, and can adjust the transverse clamping force on the outer side pipe body, the positioning piece and the inner side pipe body by matching with the locking key, and meanwhile, the elastic sheet of the outer side pipe body is matched with the positioning piece to correspondingly adjust the vertical clamping force so as to lock the inner side pipe body.
The invention utilizes the assembly connection of the positioning piece and the outer pipe body, does not need to use traditional gluing or threaded connection, has simple and effective assembly structure and reduces the requirement on processing precision; the foot tube is small in overall length after being contracted due to the absence of a traditional joint, small in accommodating volume and convenient to carry; the outer pipe body, the positioning piece and the locking unit are positioned and assembled in pairs, so that the whole assembly structure is stable; the outer pipe body and the positioning piece have the functions of radial limiting and axial positioning, so that the positioning piece and the outer pipe body are simpler to assemble, the outer pipe body and the positioning piece cannot axially rotate and axially shift, the connecting structure is stable, a stable radial clamping effect can be formed between the outer pipe body and the locking unit, the clamping force of the outer pipe body can be adjusted by the aid of the function of transversely adjusting the length of the locking rod, the outer pipe body can be adapted to the outer pipe bodies with different outer diameters, adaptability is higher, and the requirement on the machining precision of the pipe bodies is lowered; the outer pipe body, the positioning piece, the inner pipe body and the locking unit have longitudinal positioning function and transverse positioning function, and the transverse positioning function and the longitudinal positioning function can generate mutual influence, so that the inner pipe body is stably clamped; the locking unit forms firm vertical centre gripping connection to the overlap portion between outside body, setting element and the inboard body, and it can also carry out the regulation of transverse connection clamping-force simultaneously, and vertical and two horizontal vertical direction are mutually in coordination and influence for clamping-force is more powerful, also makes the form of adjusting simultaneously can be various.
Further, the positioning piece comprises a cracking part and an extending part, and the cracking part enables the positioning piece to have the function of contracting the inner diameter; the extension part can radially extend out from the elastic sheet of the outer pipe body and extend out from the notch after penetrating through the outer pipe body.
Furthermore, the lock key is a wrench which is rotationally connected with the lock rod, external force is applied to rotate the wrench, and the notch can be extruded and reduced; the extending part penetrates out of the notch and forms an opening for the lock rod to pass through.
Furthermore, at least a first gap and a second gap are formed between the elastic sheets on the outer pipe body, the extending portion extends out of the first gap, the cracking portion is opposite to the second gap, and the width of the first gap is larger than the thickness of the extending portion. The width of first gap is greater than the thickness of extension for the outside body is more firm to the centre gripping of setting element, can the different setting elements of adaptation moreover.
Furthermore, the locking rod comprises a rod body with an external thread and a locking cap which can be connected to the outer side of the rod body in a threaded mode, the locking key is connected with the rod body in a rotating mode through an optical axis, and the axial length of the external thread is larger than that of an internal thread on the inner wall of the locking cap. The length of the locking rod can be realized by adjusting the threaded connection position between the locking cap and the rod body, the adjustable function of the locking unit is realized, the locking unit is suitable for different use environments with changes of temperature, humidity and the like, the locking effect of the locking unit is still good after the locking unit is used for a long time, and the service life of the foot tube is prolonged; the cooperation of anticreep end and ladder face can prevent that the lock cap from breaking away from the body of rod, only whole dismouting just can be with the lock cap detaching from the body of rod, reaches whole locking effect of moving.
Furthermore, the tip of the body of rod has the anticreep end, the lock cap inner wall forms the ladder face that can offset with this anticreep end.
Further, the body is made of aluminum; and reinforcing ribs are formed at two end parts of the body corresponding to the positions of the locking keys. The aluminum material has high melting point, the possibility of shaping caused by environmental change is low, and the whole structure is lighter and thinner; the strengthening rib can increase the intensity that the body corresponds the position part of pulling the knot, and the thickness of this part can reduce to form the position that is used for holding the pulling the knot, overall structure is compacter.
Furthermore, the outer wall of the positioning piece is provided with a limiting boss, and the side wall of the outer pipe body is provided with a mounting hole for the limiting boss to extend out; an inclined surface which is convenient to slide into the mounting hole is formed on the limiting boss; the number of the limiting bosses is two, the limiting bosses are symmetrically arranged along the radial direction and are circumferentially arranged with the extending part and the cracking part at intervals. The positioning piece and the first pipe body are axially and radially positioned by matching the limiting boss and the mounting hole, the positioning is accurate, and the assembling difficulty is reduced.
Further, the cracking part and the extending part are symmetrically arranged along the radial direction. The cracking portion and the extending portion are arranged just oppositely, and the cracking portion and the second gap are arranged just oppositely, so that the clamping force of the first elastic sheet and the second elastic sheet on the positioning piece is more uniform, and the clamping is more stable and effective.
Furthermore, the end of the positioning element is provided with a flange which can prop against the end face of the outer pipe body, so that the axial positioning function of the positioning element and the outer pipe body is realized. The setting of flange can avoid the setting element whole to fall into first body, and supplementary spacing boss plays the positioning action.
The invention also discloses a tripod, which comprises a middle shaft, a connecting seat connected with the middle shaft, a plurality of joints arranged on the connecting seat, and a plurality of foot pipe components respectively connected with the joints in a rotating way, wherein the foot pipe components comprise,
an outer tube body having at least two elastic pieces formed at an end portion thereof, the end portion having a function of contracting an inner diameter;
an inner tube body, the end of which is sleeved in the outer tube body and is clamped when the inner diameter of the end of the outer tube body is contracted;
the positioning piece is sleeved between the overlapped parts of the outer pipe body and the inner pipe body and has the functions of radial limiting and axial positioning on the outer pipe body;
the locking unit is movably sleeved outside the part, corresponding to the positioning part, of the outer pipe body and comprises a body, a notch formed in the body and capable of being in limit fit with the positioning part, a lock rod transversely penetrating through the notch of the body and a lock key, external force is applied to the lock key, and the notch can be extruded and reduced, so that the outer pipe body, the positioning part and the inner pipe body are radially clamped by the body;
the locking rod has the function of transversely adjusting the length, and can adjust the transverse clamping force on the outer side pipe body, the positioning piece and the inner side pipe body by matching with the locking key, and meanwhile, the elastic sheet of the outer side pipe body is matched with the positioning piece to correspondingly adjust the vertical clamping force so as to lock the inner side pipe body.
Further, the positioning piece comprises a cracking part and an extending part, and the cracking part enables the positioning piece to have the function of contracting the inner diameter; the extension part can radially extend out from the space between the elastic sheets of the outer pipe body and extend out from the gap after penetrating through the outer pipe body; the lock key is a wrench which is rotationally connected with the lock rod, external force is applied to rotate the wrench, and the notch can be extruded and reduced; the extending part penetrates out of the notch and forms an opening for the lock rod to penetrate through; at least a first gap and a second gap are formed between the elastic sheets on the outer pipe body, the extension part extends out of the first gap, the cracking part is opposite to the second gap, and the width of the first gap is larger than the thickness of the extension part; the lock rod comprises a rod body with an external thread and a lock cap which can be connected to the outer side of the rod body in a threaded mode, the lock key is connected with the rod body in a rotating mode through an optical axis, and the axial length of the external thread is larger than that of an internal thread on the inner wall of the lock cap; the end part of the rod body is provided with an anti-falling end, and the inner wall of the lock cap forms a step surface which can be abutted against the anti-falling end; the body is made of aluminum; reinforcing ribs are formed at two end parts of the body corresponding to the positions of the locking keys; the outer wall of the positioning piece is provided with a limiting boss, and the side wall of the outer pipe body is provided with a mounting hole for the limiting boss to extend out; an inclined plane which is convenient to slide into the mounting hole is formed on the limiting boss; the number of the limiting bosses is two, the limiting bosses are symmetrically arranged along the radial direction and are circumferentially arranged with the extending part and the cracking part at intervals; the end part of the positioning piece is provided with a flange which can prop against the end surface of the outer pipe body so as to form the axial positioning function of the positioning piece and the outer pipe body.
The invention has the beneficial effects that: the positioning piece and the outer pipe body are assembled and connected without using traditional glue or threaded connection, the assembly structure is simple and effective, and the requirement on machining precision is reduced; the foot tube is small in overall length after being contracted due to the absence of a traditional joint, small in accommodating volume and convenient to carry; the outer pipe body, the positioning piece and the locking unit are positioned and assembled in pairs, and the whole assembly structure is stable; the outer pipe body and the positioning piece have the functions of radial limiting and axial positioning, so that the positioning piece and the outer pipe body are simpler to assemble, the outer pipe body and the positioning piece cannot axially rotate and axially shift, the connecting structure is stable, a stable radial clamping effect can be formed between the outer pipe body and the locking unit, the clamping force of the outer pipe body can be adjusted by the aid of the function of transversely adjusting the length of the locking rod, the outer pipe body can be adapted to the outer pipe bodies with different outer diameters, adaptability is higher, and the requirement on the machining precision of the pipe bodies is lowered; the outer pipe body, the positioning piece, the inner pipe body and the locking unit have longitudinal positioning function and transverse positioning function, and the transverse positioning function and the longitudinal positioning function can generate mutual influence, so that the inner pipe body is stably clamped; the length of the locking rod can be realized by adjusting the threaded connection position between the locking cap and the rod body, the adjustable function of the locking unit is realized, the locking unit is suitable for different use environments with changes of temperature, humidity and the like, the locking effect of the locking unit is still good after the locking unit is used for a long time, and the service life of the foot tube is prolonged; the anti-loosening end is matched with the stepped surface, so that the lock cap can be prevented from being separated from the rod body, and the lock cap can be detached from the rod body only through integral disassembly and assembly, so that the integral anti-loosening effect is achieved; the assembly structure is simple and effective, the locking force is good, the locking force cannot lose effectiveness after long-time use, the requirement on the machining precision of the part is reduced, the locking rod of the locking unit can be adjusted to adapt to different use environments, the service life is long, after-sale maintenance is simple, the storage volume of the whole structure is small, and the carrying is convenient; the use is nimble, can select the spare part of different sizes as required to make up the assembly, and it is high to use the flexibility ratio, reduces the requirement to the machining precision.
Drawings
FIG. 1 is a schematic view of a leg locking mechanism of the present invention.
Fig. 2 is an exploded view of the locking mechanism of the present invention.
Fig. 3 is a schematic view of an assembly structure of the outer tube body and the positioning member of the leg tube locking mechanism of the present invention.
Fig. 4 is a schematic view of the assembly structure of the leg locking mechanism (excluding the inner tube) of the present invention.
Fig. 5 is a perspective view of the locking lever of the present invention.
Fig. 6 is a schematic view of the locking unit of the leg tube locking mechanism of the present invention and the outer tube body.
FIG. 7 is a schematic view of the locking unit of the foot tube locking mechanism of the present invention in an unlocked state.
FIG. 8 is a cross-sectional view of the foot tube locking mechanism of the present invention in a locked state.
Figure 9 is a perspective view of a tripod according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-8, a leg tube locking mechanism includes an outer tube body 1, a positioning member 2, and a locking unit 3. The end of the outer pipe body 1, taking the direction shown in fig. 2 as an example, is specifically provided with at least a first elastic sheet 11 and a second elastic sheet 12 at the lower end; in this embodiment, only the first elastic sheet 11 and the second elastic sheet 12 are provided, and the first elastic sheet 11 and the second elastic sheet 12 are radially and symmetrically arranged, so that a first gap 14 and a second gap 15 are formed therebetween.
The positioning member 2 is sleeved in the lower end of the outer tube 1, and has a split portion 21 extending axially, and an extension portion 22 extending from between the first resilient piece 11 and the second resilient piece 12 is formed on the outer wall of the positioning member, in this embodiment, the extension portion 22 extends from the first slit 14, and the split portion 21 extends along the entire length direction of the positioning member 2. Moreover, the cleavage portion 21 and the extension portion 22 are symmetrically arranged in the radial direction, so that both the cleavage portion 21 and the second slit 15 are opposed to each other. The width of the first slot 14 is greater than the thickness of the extension 22.
Of course, in other embodiments, the number of the elastic sheets may be multiple, or the fracture part 21 and the extension part 22 are not arranged to be radially symmetrical.
In order to prevent the retainer 2 from completely falling into the outer pipe body 1, a flange 24 capable of abutting against the lower end surface of the outer pipe body 1 is formed at the lower end portion of the retainer 2. In order to further stably connect the positioning member 2 and the outer tube body 1, a limiting boss 23 is provided on the outer wall of the positioning member 2, and a mounting hole 13 for the limiting boss 23 to protrude is formed on the side wall of the outer tube body 1. In this embodiment, the number of the limiting bosses 23 is two, the limiting bosses 23 are symmetrically arranged in the radial direction, and the limiting bosses 23 are circumferentially spaced from the extending portion 22 and the cracking portion 21, that is, the two limiting bosses 23 are spaced from the cracking portion 21 or the extending portion 22.
For assembly, the limit projection 23 can be quickly slid into the mounting hole 13, and an inclined surface 231 is formed on the limit projection 23 to play a guiding role.
The locking unit 3 is movably sleeved outside the outer tube 1 and forms a positioning fit with the extension portion 22, and specifically, the locking unit includes a body 31 forming a radial gap 32, a lock rod 33 transversely passing through two sides of the gap 32 of the body 31, and a lock key 34 rotatably connected with the lock rod 33, in this embodiment, the lock key 34 is a toggle 34, and an external force is applied to rotate the toggle 34, so that the gap 31 can be squeezed and reduced under the cooperation of the toggle 34 and the lock rod 33, and the body 31 with the cross section in a C shape extrudes the first elastic sheet 11 and the second elastic sheet 12 at the outer side inwards to clamp the positioning member 2, and the cracking portion 21 of the positioning member 2 deforms under the action of the external force, that is, the cracking portion 21 is reduced, so that the inner tube 4 sleeved in the outer tube 1 is locked, and the locking connection between the outer tube 1 and the inner tube 4 is realized.
In order to achieve axial positioning of the locking unit 3, to prevent it from sliding freely along the outer tube 1, and to increase the assembly stability of the positioning member 2, an opening 221 is formed on the extension 22, and after the extension 22 passes through the notch 32, the locking rod 33 passes through the opening 221.
In order to adjust the locking force of the locking unit 3 to the outer tube 1, the locking rod 33 includes a rod 332 with an external thread 331, and a locking cap 333 that can be screwed on the outer side of the rod 332, the trigger 34 is rotatably connected to the rod 332 through the optical axis 35, and the axial length of the external thread 331 is greater than the axial length of the internal thread 334 on the inner wall of the locking cap 333. Therefore, the overall length of the lock rod 33 can be adjusted by adjusting the specific position of the lock cap 333 screwed on the rod body 332, and the locking force of the trigger 34 to the body 31 when rotating around the optical axis 35 can be adjusted.
In order to achieve the effect of preventing looseness and avoid random falling of parts, the end part of the rod body 332 is provided with the anti-falling end head 335 with the increased outer diameter, and the inner wall of the lock cap 333 forms a step surface 336, so that when the lock cap 333 and the rod body 332 move relatively, the end of the lock cap 333 where the anti-falling end head 335 is located cannot be separated from the rod body 332, and only when the locking unit 3 is integrally disassembled and assembled, the lock cap 333 can be separated from the other end of the rod body 332.
In order to avoid that locking unit 3 loses the locking effect after long-time use, perhaps locking effect worsens, body 31 is made for the aluminium material, and perhaps locking unit 3's whole is made by the aluminium material, for the intensity that increases body 31, forms strengthening rib 311 at the both ends that body 31 corresponds and pulls the position of detaining 34.
When the foot tube locking mechanism is assembled and used, as shown in fig. 3, the positioning piece 2 is inserted into the outer tube body 1 from bottom to top, the extension part 22 penetrates out of the first gap 14, the limit boss 23 falls into the mounting hole 13, and the second gap 15 is opposite to the cracking part 21; as shown in fig. 4, the body 31 of the locking unit 3 is sleeved to the outside of the outer tube 1 from top to bottom, and the gap 32 faces the extension portion 22; as shown in fig. 6, the lock bar 33 transversely passes through both sides of the notch 32 and the opening 221, and the optical axis 35 is used to rotatably connect the trigger 34 with the rod 332; when the inner pipe body 4 needs to be sleeved and assembled into the outer pipe body 1, the trigger 34 is rotated to an unlocking state, and the inner pipe body 4 is inserted into the outer pipe body 1 from bottom to top, more precisely, the inner pipe body 4 is located in the positioning member 2, in other words, the positioning member 2 is sleeved between the overlapping portions of the outer pipe body 1 and the inner pipe body 4; then, an external force is applied to rotate the trigger 34, the body 31 is used for clamping the first elastic sheet 11 and the second elastic sheet 12 in the circumferential direction, and the inner pipe body 4 is locked by reducing the cracking portion 21.
The shell fragment of outside body 1 tip receives external force to shrink inwards promptly, realizes the function of the shrink internal diameter of outside body 1 tip, and it accomodates the internal diameter and keeps the centre gripping of setting element 2, and the fracture portion 21 of setting element 2 receives external force and continues to shrink centre gripping inboard body 4 inwards. Moreover, the positioning piece 2 has the functions of radial limiting and axial positioning for the outer pipe body 1, so that when the positioning piece 2 and the outer pipe body 1 are assembled, deviation cannot occur, and clamping is stable; the locking unit 3 again radially clamps the outer tubular body 1, superimposing a second re-clamping after the above-mentioned first re-clamping action, the clamping of the inner tubular body being very stable. And locking lever 33 possesses the function of horizontal regulation length again, and radial clamping force can be adjusted according to actual conditions promptly, when above-mentioned structure realizes firm vertical centre gripping, can reach horizontal clamping force adjustable function, and the cooperation on two vertical directions is very firm to the centre gripping of inside body 4, setting element 2 and outside body 1, and uses the flexibility ratio height.
After a long time of use, or the locking force of the locking unit 3 is insufficient due to a change in the use environment, the locking cap 333 may be rotated to move axially along the rod body 332, shortening the overall length of the locking rod 33.
As shown in fig. 9, a tripod comprises a central shaft 5, a connecting base 6 connected with the central shaft 5, three joints 7 arranged along the circumference of the connecting base 6, and a leg pipe assembly 8 rotatably connected to the joints 7. The foot pipe assembly 8 comprises at least one group of outer pipe body 1 and inner pipe body 4 which are sleeved inside and outside, and the locking mechanism between the outer pipe body 1 and the inner pipe body 4 is the same as the structure, so that the description is omitted.
The above detailed description is intended to illustrate the present invention, not to limit the present invention, and any modifications and changes made within the spirit of the present invention and the scope of the claims fall within the scope of the present invention.
Claims (12)
1. Foot pipe locking mechanism, its characterized in that includes:
an outer tube (1) having at least two elastic pieces formed at its end portion, the end portion having a function of contracting an inner diameter;
an inner tube (4) having an end portion fitted in the outer tube (1) and being held when the inner diameter of the end portion of the outer tube (1) is contracted;
the positioning piece (2) is sleeved between the overlapped parts of the outer pipe body (1) and the inner pipe body (4) and has the functions of radial limiting and axial positioning on the outer pipe body (1);
the locking unit (3) is movably sleeved outside the part, corresponding to the positioning part (2), of the outer pipe body (1) and comprises a body (31), a notch (32) formed in the body (31) and capable of being in limit fit with the positioning part (2), a locking rod (33) transversely penetrating through the notch (32) of the body (31), and a locking key (34), external force is applied to the locking key (34), and the notch (32) can be extruded and reduced, so that the body (31) radially clamps the outer pipe body (1), the positioning part (2) and the inner pipe body (4);
locking lever (33) possess the function of horizontal regulation length, and it can adjust the horizontal clamping-force to outside body (1), setting element (2) and inboard body (4) with catch (34) cooperation, simultaneously, the shell fragment and the setting element (2) cooperation of outside body (1), the vertical clamping-force of corresponding adjustment, in order to lock inboard body (4).
2. A foot tube locking mechanism according to claim 1, further comprising: the positioning piece (2) comprises a cracking part (21) and an extending part (22), and the cracking part (21) enables the positioning piece (2) to have the function of contracting the inner diameter; the extension part (22) can radially extend out from the elastic sheet of the outer pipe body (1) and extend out from the notch (32) after penetrating through the outer pipe body (1).
3. A foot tube locking mechanism according to claim 1, further comprising: the lock key (34) is a wrench (34) rotationally connected with the lock rod (33), external force is applied to rotate the wrench (34), and the notch (32) can be extruded and reduced; the extending part (22) penetrates out of the notch (32) and forms an opening (221) for the lock rod (33) to penetrate through.
4. A foot tube locking mechanism according to claim 2, further comprising: at least a first gap (14) and a second gap (15) are formed between the elastic sheets on the outer pipe body (1), the extension portion (22) extends out of the first gap (14), the cracking portion (21) is opposite to the second gap (15), and the width of the first gap (14) is larger than the thickness of the extension portion (22).
5. A foot tube locking mechanism according to claim 1, further comprising: the lock rod (33) comprises a rod body (332) with an external thread (331) and a lock cap (333) capable of being in threaded connection with the outer side of the rod body (332), the lock key (34) is rotationally connected with the rod body (332) through an optical axis (35), and the axial length of the external thread (331) is larger than that of the internal thread (334) on the inner wall of the lock cap (333).
6. A foot tube locking mechanism according to claim 5, further comprising: the end of the rod body (332) is provided with an anti-falling end head (335), and the inner wall of the lock cap (333) forms a step surface (336) which can prop against the anti-falling end head (335).
7. A foot tube locking mechanism according to claim 1, further comprising: the body (31) is made of aluminum; reinforcing ribs (311) are formed at two end parts of the body (31) corresponding to the position of the locking key (34).
8. A foot tube locking mechanism according to claim 1, further comprising: a limiting boss (23) is arranged on the outer wall of the positioning piece (2), and a mounting hole (13) for the limiting boss (23) to extend out is formed in the side wall of the outer pipe body (1); an inclined surface (231) which is convenient to slide into the mounting hole (13) is formed on the limiting boss (23); the number of the limiting bosses (23) is two, the limiting bosses are symmetrically arranged along the radial direction and are circumferentially arranged with the extending part (22) and the cracking part (21) at intervals.
9. A foot tube locking mechanism according to claim 2, further comprising: the cracking part (21) and the extending part (22) are symmetrically arranged along the radial direction.
10. A foot tube locking mechanism according to claim 1, further comprising: the end part of the positioning piece (2) is provided with a flange (24) which can be propped against the end surface of the outer pipe body (1) so as to form the axial positioning function of the positioning piece (2) and the outer pipe body (1).
11. The utility model provides a tripod, includes axis (5), connecting seat (6) that link to each other with axis (5), locates a plurality of joints (7) on connecting seat (6), and rotate a plurality of foot pipe subassemblies (8) that link to each other with a plurality of joints (7) respectively, its characterized in that: the foot tube component (8) comprises a foot tube component,
an outer tube (1) having at least two elastic pieces formed at an end portion thereof, the end portion having a function of contracting an inner diameter;
an inner tube (4) having an end portion fitted in the outer tube (1) and being held when the inner diameter of the end portion of the outer tube (1) is contracted;
the positioning piece (2) is sleeved between the overlapped parts of the outer pipe body (1) and the inner pipe body (4) and has the functions of radial limiting and axial positioning on the outer pipe body (1);
the locking unit (3) is movably sleeved outside the part, corresponding to the positioning part (2), of the outer pipe body (1) and comprises a body (31), a notch (32) formed in the body (31) and capable of being in limit fit with the positioning part (2), a locking rod (33) transversely penetrating through the notch (32) of the body (31), and a locking key (34), external force is applied to the locking key (34), and the notch (32) can be extruded and reduced, so that the body (31) radially clamps the outer pipe body (1), the positioning part (2) and the inner pipe body (4);
locking lever (33) possess the function of horizontal regulation length, and it can adjust the horizontal clamping-force to outside body (1), setting element (2) and inboard body (4) with catch (34) cooperation, simultaneously, the shell fragment and the setting element (2) cooperation of outside body (1), the vertical clamping-force of corresponding adjustment, in order to lock inboard body (4).
12. A tripod according to claim 11, wherein: the positioning piece (2) comprises a cracking part (21) and an extending part (22), and the cracking part (21) enables the positioning piece (2) to have the function of contracting the inner diameter; the extension part (22) can radially extend out from the position between the elastic sheets of the outer pipe body (1) and extend out from the notch (32) after penetrating through the outer pipe body (1); the lock key (34) is a wrench (34) rotationally connected with the lock rod (33), external force is applied to rotate the wrench (34), and the notch (32) can be extruded and reduced; the extension part (22) penetrates out of the notch (32) and forms an opening (221) for the lock rod (33) to penetrate through; at least a first gap (14) and a second gap (15) are formed between the elastic sheets on the outer pipe body (1), the extension part (22) extends out of the first gap (14), the cracking part (21) is opposite to the second gap (15), and the width of the first gap (14) is larger than the thickness of the extension part (22); the lock rod (33) comprises a rod body (332) with an external thread (331) and a lock cap (333) capable of being in threaded connection with the outer side of the rod body (332), the lock key (34) is rotatably connected with the rod body (332) through an optical axis (35), and the axial length of the external thread (331) is greater than that of the internal thread (334) on the inner wall of the lock cap (333); the end part of the rod body (332) is provided with an anti-falling end head (335), and the inner wall of the lock cap (333) forms a step surface (336) which can be abutted against the anti-falling end head (335); the body (31) is made of aluminum material; reinforcing ribs (311) are formed at two end parts of the body (31) corresponding to the position of the locking key (34); a limiting boss (23) is arranged on the outer wall of the positioning piece (2), and a mounting hole (13) for the limiting boss (23) to extend out is formed in the side wall of the outer pipe body (1); an inclined surface (231) which is convenient to slide into the mounting hole (13) is formed on the limiting boss (23); the number of the limiting bosses (23) is two, the limiting bosses are symmetrically arranged along the radial direction and are circumferentially arranged with the extending part (22) and the cracking part (21) at intervals; the end part of the positioning piece (2) is provided with a flange (24) which can be propped against the end surface of the outer pipe body (1) so as to form the axial positioning function of the positioning piece (2) and the outer pipe body (1).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120672406X | 2021-04-01 | ||
| CN202120672406 | 2021-04-01 |
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| CN115182914A true CN115182914A (en) | 2022-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110817333.3A Pending CN115182914A (en) | 2021-04-01 | 2021-07-20 | Leg tube locking mechanism and tripod |
| CN202121648085.6U Active CN215861166U (en) | 2021-04-01 | 2021-07-20 | Leg tube locking mechanism and tripod |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121648085.6U Active CN215861166U (en) | 2021-04-01 | 2021-07-20 | Leg tube locking mechanism and tripod |
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| Country | Link |
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| CN (2) | CN115182914A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN217130877U (en) * | 2022-04-14 | 2022-08-05 | 中山市科曼摄影器材有限公司 | Compact camera support |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008000937U1 (en) * | 2007-12-25 | 2008-03-27 | SPIM Precision Instruments Manufacturing GmbH, Foshan | A portable astronomical telescope |
| CN201056269Y (en) * | 2007-06-04 | 2008-05-07 | 捷安特(中国)有限公司 | Pipe fitting cramping arrangement |
| CN201259077Y (en) * | 2008-09-19 | 2009-06-17 | 陈庆元 | Novel wear resistant foot rest plate fastener |
| CN201322020Y (en) * | 2008-10-15 | 2009-10-07 | 刘昊 | Photography tripod jut pipe locking device |
| CN101629659A (en) * | 2009-07-27 | 2010-01-20 | 黄陈宝 | Theftproof joint of pipeline |
| CN103359238A (en) * | 2013-08-12 | 2013-10-23 | 深圳市富厚自行车配件有限公司 | Locking device of telescopic pipe |
| CN204387598U (en) * | 2014-12-25 | 2015-06-10 | 佛山市南海祥旺光学电子制品有限公司 | Locking device for tubular leg of tripod |
| TWM507986U (en) * | 2015-06-24 | 2015-09-01 | Jing Fong Industry Co Ltd | Nut structure |
| CN205117917U (en) * | 2015-10-30 | 2016-03-30 | 四川鸿昌塑胶工业有限公司 | A locking device for telescopic link |
| CN210600887U (en) * | 2019-08-12 | 2020-05-22 | 广东百诺影像科技工业有限公司 | Foot pipe angle adjusting structure and tripod |
-
2021
- 2021-07-20 CN CN202110817333.3A patent/CN115182914A/en active Pending
- 2021-07-20 CN CN202121648085.6U patent/CN215861166U/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201056269Y (en) * | 2007-06-04 | 2008-05-07 | 捷安特(中国)有限公司 | Pipe fitting cramping arrangement |
| DE202008000937U1 (en) * | 2007-12-25 | 2008-03-27 | SPIM Precision Instruments Manufacturing GmbH, Foshan | A portable astronomical telescope |
| CN201259077Y (en) * | 2008-09-19 | 2009-06-17 | 陈庆元 | Novel wear resistant foot rest plate fastener |
| CN201322020Y (en) * | 2008-10-15 | 2009-10-07 | 刘昊 | Photography tripod jut pipe locking device |
| CN101629659A (en) * | 2009-07-27 | 2010-01-20 | 黄陈宝 | Theftproof joint of pipeline |
| CN103359238A (en) * | 2013-08-12 | 2013-10-23 | 深圳市富厚自行车配件有限公司 | Locking device of telescopic pipe |
| CN204387598U (en) * | 2014-12-25 | 2015-06-10 | 佛山市南海祥旺光学电子制品有限公司 | Locking device for tubular leg of tripod |
| TWM507986U (en) * | 2015-06-24 | 2015-09-01 | Jing Fong Industry Co Ltd | Nut structure |
| CN205117917U (en) * | 2015-10-30 | 2016-03-30 | 四川鸿昌塑胶工业有限公司 | A locking device for telescopic link |
| CN210600887U (en) * | 2019-08-12 | 2020-05-22 | 广东百诺影像科技工业有限公司 | Foot pipe angle adjusting structure and tripod |
Non-Patent Citations (1)
| Title |
|---|
| 沈萌红: "《机械设计》", vol. 1, 30 September 2012, 华中科技大学出版社, pages: 363 - 365 * |
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| CN215861166U (en) | 2022-02-18 |
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