CN2789807Y

CN2789807Y - Tripod foot tubes locking device

Info

Publication number: CN2789807Y
Application number: CN200520057431.8U
Authority: CN
Inventors: 杨文昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-22
Filing date: 2005-04-22
Publication date: 2006-06-21
Anticipated expiration: 2015-04-22

Abstract

The utility model relates to a tripod foot tube locking device, and the existing tripod has the defects of not beautiful appearance, multiple process steps, easy looseness and inconvenient tightness regulation. Therefore, the utility model comprises an integrally formed die-casting three-cutting seat, three foot tube joints and three articulated shafts, wherein three homogeneously distributed foot tube notches are arranged on the three-cutting seat, and articulated shaft fixing holes are separately arranged on both side walls of each notch. Both sides of each foot tube joint are likewise provided with two holes for the articulated shafts to penetrate through and to be fixed in the fixing holes on both sides of the foot tube notches, and the articulated shafts are fixed and does not rotate relatively to the three-cutting seat; however, the foot tube joints can rotate relatively to the articulated shafts, and the rotating tightness of the articulated shafts is controlled by a slide preventing fitting which is slipped through a radial screw hole on the facade of each foot tube joint and is pushed to contact with the articulated shafts by a following screw rod; the contacting tightness determines the extending and shrinking tightness of foot tubes. The tripod foot tube locking device of the utility model has the advantages of beautiful appearance, few process steps, little possibility of looseness and convenient tightness regulation, and can be widely used for various tripods.

Description

Tripod pin pipe locking device

Technical field

The utility model relates to a kind of photographic goods, particularly a kind of tripod pin pipe locking device.

Background technology

Tripod is widely used in fields such as photography, mapping as a kind of portable support frame.The pin pipe adapter of the pin pipe of tripod by the pin tube end is hinged on three and cuts seat, can rotate within the specific limits.But when drawing in or launch the pin pipe, if feel too painstaking, then inconvenience is used; If sensation is unfavorable for the stable of tripod too flexibly again.That is to say that this being articulated and connected should the degree of tightness appropriateness.Three of existing tripod cuts seat and is split-type design, is made up of two parts up and down; Be shaped on jointed shaft on the pin pipe adapter, the two ends of jointed shaft are clamped in three and cut seat up and down between two parts, cut the clamp nut of seat below by adjusting three, regulate three cut seat up and down two parts to the pressure of jointed shaft, so as to controlling three friction force of cutting seat and jointed shaft.But this split type three cut the holder structure complexity, two parts all need impact briquetting up and down, not attractive in appearance, operation is many, easily loosening, and every pin Guan Yusan cuts the elasticity of seat and can not regulate separately, when cause three pin Guan Yusan to cut the elasticity of seat when inconsistent owing to processing reason or other reasons, can't regulate.

The utility model content

The technical problems to be solved in the utility model is the above-mentioned defective that how to overcome existing tripod pin pipe locking device, provide a kind of attractive in appearance, operation is few, be difficult for the tripod pin pipe locking device that becomes flexible, be convenient to regulate.

For solving the problems of the technologies described above, the utility model tripod pin pipe locking device, comprise that three cut seat, three pin pipe adapters, three jointed shafts, three cut seat is provided with three equally distributed pin tube seat mouths, wherein, pin pipe adapter, jointed shaft and pin tube seat mouth---three is corresponding one by one, and described three cut seat is formed in one, and the side walls of pin tube seat mouth is provided with fixed orifice; The two ends of jointed shaft are fixed in this fixed orifice of pin tube seat mouth both sides, jointed shaft runs through the hinge hole on the pin pipe adapter, the pin pipe adapter can rotate on jointed shaft, hinge hole one side has radial direction through hole, be shaped on screw thread on this radial direction through hole, and be furnished with external thread piece, this external thread piece is pressed in jointed shaft on the hinge hole inwall, and can further screw.

So design, three cut seat designs for integral type, more attractive in appearance, consumptive material is few, cost is low, and every pin pipe adapter all is furnished with and has the external thread piece that compresses the jointed shaft function, and every pin Guan Yusan elasticity of cutting all can be regulated separately like this.

As optimization, be provided with the on-slip accessory in the hinge hole between jointed shaft and screw or screw rod, this on-slip accessory and jointed shaft outer wall, radial direction through hole and screw or screw rod are all sliding joins.So design can be avoided the damage to jointed shaft of screw or screw rod.

As optimization, contact for cambered surface between this on-slip accessory and the jointed shaft.So design, contact area is big, and under uniform pressure, pressure is little, and is little to the damage of jointed shaft.

As optimization, an end of described jointed shaft is shaped on vertical antislip cog, and the three fixed orifice inwalls that cut seat that match with it are shaped on vertical antiskid groove.So design under the prerequisite that guarantees fastness, than riveted joint, welding, other modes such as bonding, is assembled more convenient.

As optimization, described external thread piece is cylindrical screw rod, the longitudinal length of this screw rod and on-slip accessory and less than the degree of depth of radial direction through hole, the one end is shaped on in-line or cruciform or interior hexangle type groove.So design can all be screwed into external thread piece in the radial direction through hole, and appearance is smooth more attractive in appearance.

As optimization, described external thread piece is a screw, and its axial thread length is greater than the degree of depth of radial direction through hole, and is shaped on in-line or cruciform or sexangle or interior sexangle ailhead.So design is easy to use.

As optimization, the material of on-slip accessory is a wear-resistant copper alloy.So design, the life-span is long.

In such scheme, the design people has not only proposed the three integral type designs of cutting seat, and the pin pipe locking device of existing tripod has been done improvement.Integral body is more attractive in appearance, consumptive material is few, cost is low, and the elasticity that every pin Guan Yusan cuts seat all can be regulated separately.Compare with prior art, have substantive distinguishing features and progress, its practicality and novelty are undoubted especially.

After adopting technique scheme, this tripod pin pipe locking device has easily manufactured, simple in structure, with low cost advantage, and the elasticity that every pin Guan Yusan cuts seat all can regulate separately, is the desirable substitute products of pin pipe locking device of existing tripod.Be widely used on the various tripods.

Description of drawings

Fig. 1 is the structural representation of existing tripod pin pipe locking device;

Fig. 2 is the part section structural representation of existing tripod pin pipe locking device;

Fig. 3 is the structural representation of this tripod pin pipe locking device;

Fig. 4 is that the A-A of Fig. 3 is to cross-sectional view;

Fig. 5 is the assembling synoptic diagram of this tripod pin pipe locking device.

As illustrated in fig. 1 and 2, three of existing tripod cuts seat 1 and is split-type design, is made up of two

parts

11,12 up and down; Be shaped on jointed shaft 3 on the pin pipe adapter 2, the two ends of jointed shaft 3 are clamped in three and cut seat up and down between the groove 14 on two

parts

11,12, cut the clamp nut 13 of seat below by adjusting three, regulate three and cut the seat pressure of 11,12 pairs of jointed shafts 3 of two parts up and down, so as to controlling three friction force of cutting seat 1 and jointed shaft 3.

Embodiment

Below in conjunction with accompanying drawing this tripod pin pipe locking device is described further:

Embodiment one: shown in Fig. 3,4 and 5, the utility model tripod pin pipe locking device comprises that three cut 1, three pin pipe adapter of seat 2, three jointed shafts 3, three cut seat 1 is provided with three equally distributed pin tube seat mouths 4, wherein, pin pipe adapter 2, jointed shaft 3 and pin tube seat mouth 4---three is corresponding one by one, described three cut seat is formed in one, and the side walls of pin tube seat mouth 4 is provided with fixed orifice 6; The two ends of jointed shaft 3 are fixed in the fixed orifice 6, and jointed shaft 3 runs through the hinge hole 7 on the pin pipe adapter 2, and pin pipe adapter 2 can rotate on jointed shaft 3, and hinge hole 7 one sides have radial direction through hole 8, are shaped on screw thread on this radial direction through hole 8, and are furnished with cylindrical screw rod 9.Be provided with on-slip accessory 10 in the hinge hole 7 that jointed shaft 2 and cylindrical screw rod are 9, this on-slip accessory 10 is joined with jointed shaft 3 outer walls, radial direction through hole 8 and cylindrical screw rod 9 are all sliding.Contact for cambered surface between this on-slip accessory 10 and the jointed shaft 2.

The longitudinal length of this cylindrical screw rod 9 and on-slip accessory 10 and less than the degree of depth of radial direction through hole 8.

One end of described jointed shaft is shaped on vertical antislip cog 15, and three fixed orifice 6 inwalls that cut seat that match with it are shaped on vertical antiskid groove 16.

Claims

1, a kind of tripod pin pipe locking device, comprise that three cut seat, three pin pipe adapters, three jointed shafts, three cut seat is provided with three equally distributed pin tube seat mouths, wherein, pin pipe adapter, jointed shaft and pin tube seat mouth---three is corresponding one by one, it is characterized in that: described three cut seat is formed in one, and the side walls of pin tube seat mouth is provided with fixed orifice; The two ends of jointed shaft are fixed on this fixed orifice of pin tube seat mouth both sides, jointed shaft runs through in the hinge hole on the pin pipe adapter, the pin pipe adapter can rotate on jointed shaft, hinge hole one side has radial direction through hole, be shaped on screw thread on this radial direction through hole, and be furnished with external thread piece, this external thread piece is pressed in jointed shaft on the hinge hole inwall, and can further screw.

2, tripod pin pipe locking device according to claim 1 is characterized in that: be provided with the on-slip accessory in the hinge hole between jointed shaft and screw or screw rod, this on-slip accessory and jointed shaft outer wall, radial direction through hole and screw or screw rod are all sliding joins.

3, tripod pin pipe locking device according to claim 2 is characterized in that: contact for cambered surface between this on-slip accessory and the jointed shaft.

4, tripod pin pipe locking device according to claim 3, it is characterized in that: an end of described jointed shaft is shaped on vertical antislip cog, and the three fixed orifice inwalls that cut seat that match with it are shaped on vertical antiskid groove.

5, according to claim 2 or 3 or 4 described tripod pin pipe locking devices, it is characterized in that: described external thread piece is cylindrical screw rod, the longitudinal length of this screw rod and on-slip accessory and less than the degree of depth of radial direction through hole, the one end is shaped on in-line or cruciform or interior hexangle type groove.

6, according to claim 2 or 3 or 4 described tripod pin pipe locking devices, it is characterized in that: described external thread piece is a screw, its axial thread length is greater than the degree of depth of radial direction through hole, and is shaped on in-line or cruciform or sexangle or interior sexangle ailhead.

7, tripod pin pipe locking device according to claim 5, it is characterized in that: the material of on-slip accessory is a wear-resistant copper alloy.