CN202693975U

CN202693975U - Middle shaft used for photography equipment

Info

Publication number: CN202693975U
Application number: CN201220079191.1U
Authority: CN
Inventors: 刘昊
Original assignee: ZHONGSHAN BAINUO PRECISION INDUSTRY Co Ltd
Current assignee: ZHONGSHAN BAINUO PRECISION INDUSTRY Co Ltd
Priority date: 2012-03-05
Filing date: 2012-03-05
Publication date: 2013-01-23
Anticipated expiration: 2022-03-05

Abstract

The invention relates to a middle shaft used for photography equipments, which comprises a support rod with a first end and a second end, a spheric seat (7) connected to the first end as an integrated body and a spheric bowl (6) possessing a first operation portion (5), a loading plate (3) formed with the spheric seat (7) and a second operation portion (8), wherein the outer wall of the spheric bowl (6) inserts in the central hole of the spheric seat (7) through at least a part of the first operation portion (5) and is connected to the inner wall of the spheric seat (7), the second operation portion (8) is close to the loading plate (3) and arranged on the spheric seat (7), and is operated for contacting and locking the first operation portion (5) by at least a part. The stability of the protected middle shaft (1) is not influenced during the adjusting process, and the user does not require for taking regard of the length of the middle shaft (1) or the position of the tripod used for installing the middle shaft (1) during the operating.

Description

The axis that is used for photographic goods

Technical field

The utility model relates to the photographic goods field, relates in particular to the axis for photographic goods.

Background technology

Axis (or claim cramp bar) usually and tripod be used the instrument of surveying and mapping, observation instrument etc. that are applied to photographic goods, apparatus for making a video recording etc. and have similar structures.Axis is installed on the tripod, relies on three legs of tripod are regulated respectively, thereby realizes the leveling purpose.But this mode needs successively each leg of tripod to be adjusted, and also will guarantee simultaneously to affect the stability that axis is placed.

Chinese patent CN1639504A discloses a kind of cramp bar that is used in particular for optics or photographic equipment etc. for general device.The Main Means of realizing Level tune in this patent is to drive tie-rod by turning knob, and then moves through tie-rod drive steel ball and pod, thereby adjusts orientable platform, realizes not needing to regulate the purpose that tripod just can be finished Level tune.

But the knob in this patent is positioned at the bottom of axis, in use, knob will be inserted spider in order to regulate, and namely the second operating position is in the bottom of spider.Loosen or too loosening knob, drive the tie-rod motion, carry out Level tune.When being totally released knob, until it is thrown off from the spiral shell handle of tie-rod with platelet, just can take off axis from tripod.In fact the design of knob position and adjustment structure and mode may cause the knob aeration level to have influence on the fixing stability of axis and the precision of Level tune.In addition, knob position be so that the user need to consider AL, and for example axis is long or the position of tripod spider when low, and the user certainly will will bend forward body and bend over just can touch knob to regulate, and brings inconvenience thus.

The utility model content

Based on above-mentioned prior art, the purpose of this utility model provides a kind of axis for Level tune, this axis allows to finish fast Level tune, when assurance realizes Level tune by the first operating portion and effect fast thereon and near the interaction between the second operating portion of loading plate, can not affect the stability of axis itself, and the user need not to consider to be used for installing on the length of axis or the tripod height of axis.

For finishing above-mentioned purpose, the utility model provides a kind of axis for photographic goods, loading plate and the second operating portion that it comprises pole with first end and the second end, be connected with this first end and have the ball seat of center pit and have the ball bowl of the first operating portion, consist of with this ball seat one.Wherein the outer wall of this ball bowl is by in the center pit that at least a portion of this first operating portion is inserted this ball seat and contact with the inwall of this ball seat, and this second operating portion is arranged on the described ball seat near described loading plate and can be operated with its at least a portion contact and locks this first operating portion.

The first operating portion of the present utility model is arranged on the described ball seat near described loading plate and acts directly on the axis that the design on the second operating portion protects the utility model can finish Level tune rapidly; the stability of axis itself can not be affected because of adjustment process simultaneously, and so that the user need not to consider the length of axis or the position that tripod is used for installing this axis when operation.

Can expect according to a scheme of the present utility model, the first operating portion axially has the annular groove that is inclined-plane annular groove shape on the outer surface along it, wherein, position relative with this annular groove on this ball seat has the hole, described at least a portion of this second operating portion is passed this annular groove of this Kong Bingyu and is matched, and forms the inclined-plane that can match with the inclined-plane of this annular groove in described at least a portion of this second operating portion.

As further improvement in the technical proposal, it will also be appreciated that the aperture of opening in the position relative with described annular groove on the ball seat is provided with the hole that another is used for admitting securing member to relative position, this securing member allows described ball bowl to do limited charging into axial motion in the described annular groove.

As the optimization of technique scheme, the ball bowl has through hole at the center, and at least a portion of the first operating portion can pass this through hole so that described loading plate, this first operating portion and ball bowl-type become to cooperate adjustable mechanism.The first operating portion has the described through hole that can't pass described ball bowl and the part that is positioned at thus this ball seat.

It will also be appreciated that, between ball bowl and described the first operating portion, between this first operating portion and described ball seat, place respectively the elasticity spheric washer have with the concentric central through hole of the described through hole of the described center pit of this ball seat and this ball bowl, so that this first operating portion passes therethrough.The elasticity spheric washer can be alleviated the impact on instrument that vibrations bring.

According to another scheme of the present utility model, described at least a portion of the second operating portion is leading section, this second operating portion also comprises the web member that consists of with this leading section one and the handle that connects with the anti-rotation of this web member by securing member and spring, moves the movement of controlling the first operating portion thereby this securing member and this spring and this web member form telescopic mechanism jointly in order to control described leading section.The design of this polygon cooperation and telescopic mechanism is so that the locking function of the second operating portion is more effective.

According to another scheme of the present utility model, the first operating portion can also be tooth bar, and the second operating portion can also be the knob with tooth with described tooth bar mating reaction.

According to embodiment of the present utility model, in order to realize more closely the immovable fitting of ball seat and pole, can expect that pole has the groove that runs through whole pole along its length direction, the bottom of ball seat has and forms the tight teat that engages with this groove in case spline is moving.Perhaps in gluing mode ball seat is fixed on the described first end of pole in case spline is moving.

Description of drawings

Below, be described with reference to the accompanying drawings embodiment of the present utility model, wherein:

Fig. 1 is according to the stereographic map of an embodiment of the utility model under its assembled state;

Fig. 2 is the exploded view of embodiment shown in Fig. 1, and it shows the relation between each assembly;

Fig. 3 is the cut-open view of embodiment shown in Fig. 1 under its assembled state;

Fig. 3 a is the cross-sectional view of pole embodiment illustrated in fig. 1, runs through the xsect of the groove of this pole shown in it;

Fig. 4 is the cut-open view according to an embodiment of the second operating portion of the present utility model.

Embodiment

Be noted that at first embodiment described in the utility model only is exemplary, understand better feature of the present utility model in order to help those skilled in the art, rather than will limit the claimed scope of the utility model.

The below describes in detail an embodiment of the present utility model with reference to the accompanying drawings.

According to shown in Figure 3; the axis that is mainly used in the photographic goods field that the utility model is protected, loading plate 3 and the second operating portion 8 that it mainly comprises pole 9 with first end and the second end, be connected with this first end and have the ball seat 7 of center pit and have the ball bowl 6 of the first operating portion 5, consist of with ball seat 6 one.Wherein the outer wall of ball bowl 6 is by in the center pit that at least a portion of the first operating portion 5 is inserted ball seat 7 and contact with the inwall of ball seat 7.The second operating portion 8 is arranged on the ball seat 7 near loading plate 3 and can be operated with its at least a portion and contacts and lock the first operating portion 5.Term " Integral design " had both comprised the structure made from same material between each parts that relates to this kind annexation in the utility model, also comprise between these parts by direct connected mode or indirect joint mode, be connected with each other such as pin joint, clamping, the mode such as be threaded.

Because the second operating portion 8 is arranged on the ball seat 7 near loading plate 3, and act directly on the first operating portion 5 that links to each other with ball bowl 6, so when operation the second operating portion 8 along continuous straight runs near or when moving away from the first operating portion 5, nature can cause that the first operating portion 5 moves.By regulating after the steps such as loading plate 3 finish the Level tune of axis 1, rely on aforesaid operations to lock the second operating portion 8, thereby keep transferring the horizontality of loading plate 3.

Fig. 1 be expression according to the stereographic map of the assembled state of the axis of another specific embodiment of the present utility model, Fig. 2 illustrates the exploded view of axis shown in Figure 1, and Fig. 3 is the cut-open view of the assembled state of expression axis shown in Figure 1.In the present embodiment, ball seat 7 comprises three parts, respectively upper part 73, center section 74 and end portion 75, as shown in Figure 2, the diameter of these three parts according to from the upper part 73, center section 74 reduces to the order of end portion 75, thereby between end portion 75 and center section 74, limit shoulder, for the end face of the described first end that is resisted against pole 9.As shown in Figure 3, the wall that links to each other with end portion 75 between center section 74 axially has teat at it, be used for pole 9 on groove 91(a) fasten referring to Fig. 2 and Fig. 3.

Supported by ball seat 7 in the center pit of level(l)ing mechanism by the first operating portion 5 insertion ball seats 7.This level(l)ing mechanism mainly is comprised of loading plate 3, the first operating portion 5 and ball bowl 6, wherein loading plate 3 is connected to one with ball bowl 6 such as screw or register pin etc. by securing member 2, there is a through hole at ball bowl 6 centers, and this through hole is concentric with the described center pit of ball seat 7.The part of the end portion 75 of ball seat 7 is inserted in the pole 9 simultaneously, realizes thus the socket of pole 9 and ball seat 7.

It will also be appreciated that, the first operating portion 5 axially has the groove that is inclined-plane annular groove shape on the outer surface along it, it is annular groove 51, have through hole 72 as mounting hole with the relative position that makes progress, annular groove 51 footpath on ball seat 7, the second operating portion 8 for example can be to be threaded connection or other similar modes are installed on the ball seat 7 by through hole 72.The leading section 85 that contacts with annular groove 51 of the second operating portion 8 has the inclined-plane of the inclined-plane effect of cooperatively interacting with annular groove 51, forms the inclined-plane between them and cooperates.

When rotating the second operating portion 8, make its leading section 85 for example towards near or move away from the direction of the first operating portion 5, cooperate because leading section 85 and annular groove 51 forms inclined-planes, thereby leading section 85 above-mentioned moves through this inclined-plane cooperation and causes that the first operating portion 5 moves towards described first end or the described the second end of pole 9.When enough loosening the second operating portion 8, can freely adjust loading plate 3 and carry out Level tune, after adjusting is finished, only need locking the second operating portion 8, just can keep the horizontality of loading plate 3, realize the Level tune of axis 1.

A kind of improvement as this embodiment, on ball seat 7, have a through hole 41 with the corresponding position that makes progress, annular groove 51 footpath, be provided with a part within it and stretch into protrusion or securing member 4 in the annular groove 51, the part that this protrusion or securing member do not stretch into annular groove 51 is fixedly connected with ball seat 7, such as being threaded connection or other similar fashion such as glue is bonding.The fore-end that protrusion or securing member 4 contact with annular groove 51 is beveling also, and form the inclined-plane and cooperate, can certainly be other shapes.Arranging of protrusion or securing member 4 can be played the position-limiting action that makes the first operating portion 5 carry out limited axially-movable.

According to Fig. 1 to Fig. 3 and content as described above, the installation site of the second operating portion 8 is close to described level(l)ing mechanism, and more specifically, it is close to loading plate 3.And the second end of axis 1 by pole 9 for example is installed on tripod or other the similar supports, that is to say, the user experiences following 2 advantages up to I haven't seen you for ages carrying out Level tune:

One, because the second operating portion 8 is installed in the position close with loading plate 30 minutes as shown in Fig. 1 to Fig. 3, even axis 1 itself has equivalent length, when regulating, the user also need not to bend over just can finish Level tune by operating the second operating portion 8 by bending forward body.

They are two years old, the second operating portion 8 aforesaid structural designs are separated into two actions independent of each other fully with adjusting and the fixing of axis 1 of level(l)ing mechanism, can not occur owing to loosening or tighten and be affected when the second operating portion 8 makes axis 1 for example be fixed on tripod or the support of other similar structures, may make axis break away from the problem of spider when having solved such as the undue loosening knob described in the background technology.

In order further to improve this embodiment, make the socket between described level(l)ing mechanism and the pole 9 more firm, can adopt for example gluing mode, specifically, respectively ball seat 7 between on the wall that center section 74 and end portion 75 links to each other with the interior or outside surface of pole 9 contact portions on and with it the outer or inner surface coating of corresponding pole 9 such as analogs such as glue, and pole 9 and ball seat 7 are combined securely, thereby prevent that ball seat 7 from rotating.

Perhaps, shown in Fig. 3 and Fig. 3 a, have groove 91 on the outside surface of pole 9, it is along the axial perforation of pole 9.In the part that ball seat 7 contacts with pole 9, be exactly at teat corresponding to the outside surface setting of ball seat 7 end portions 75 and groove 91 specifically, for example with the kick of groove 91 sizes coupling, to realize and being fixed of groove 91.This can guarantee that equally pole 9 closely is fixedly connected with described level(l)ing mechanism, and then guarantees that ball seat 7 does not rotate.

According to this embodiment, the second operating portion 8 can also have various embodiments.Shown in Fig. 4 is an embodiment of the second operating portion 8.It shows on ball seat 7 walls leading section 85 as through hole 72, the second operating portions 8 of mounting hole.In addition, the second operating portion 8 also comprises and is fixedly connected with the web member 83 that is integral with leading section 85, and by securing member 86(such as screw etc.) and the handle 82 that connects with web member 83 anti-rotations of spring 84, securing member 86 and spring 84 and web member 83 be the composition telescopic mechanisms jointly.Handle 82 consists of polygon with web member 83 and cooperates, when outwards extracting handle 82 with external force, its with web member 83 between remove by polygon and cooperate forms relative fixing, on web member 83 actionless bases, handle 82 can move forward or backward by rotating to an angle.Threaded engagement between this moment web member 83 and the through hole 72, part 83 moves thereby the moving belt of handle 82 is dynamically connected, and this impels again leading section 85 to move, thus realization is to the control of the first operating portion 5.After this external force was cancelled, the pretightning force by spring 84 made handle 82 and web member 83 again form polygon to cooperate and relative transfixion, realize locking.

It will also be appreciated that, between ball bowl 6 and the first operating portion 5, between this first operating portion and ball seat 7, can place respectively the elasticity spheric washer that has with the concentric central through hole of the described through hole of the described center pit of ball seat 7 and ball bowl 6, so that the first operating portion 5 passes from this each hole.The elasticity spheric washer reduces to rub and reduces the effect of vibration influence except having, and can also increase the scope of Level tune, the precision of improving the standard and regulating.

For pole 9, its described the second end can be installed with end cap 10 and hook base 11 as shown in Figures 2 and 3.End cap 10 can be fixed on the pole 9 by the similar fashion such as gluing, and end cap 10 and hook base 11 can be the similar fashion such as to be threaded connection to be fixed together.Centre bit at hook base 11 is equipped with a jut (Fig. 2 and Fig. 3), runs through this jut and is provided with a hook, and it places the lateral dimension of the end of pole 9 inside to be slightly larger than remainder.The cross sectional dimensions of this hook is less than the cross sectional dimensions of described jut, thereby forms spring base, is installed on spring at this hook, and an end of this spring is against described spring base, and the other end is against the end that places pole 9 inside of described hook.

When for example being installed in axis 1 on tripod or the similar support, the above-mentioned hook on the hook base 11 can catch on or be connected on the structure corresponding on the similar supports such as tripod, thereby axis 1 is fixed on the stilts such as tripod or similar support.It will also be appreciated that to have the engaging part of mating with groove 91 at stilts such as tripod or similar support, realize pole 9, namely axis 1 is fixing.

Can see packing ring 12 from Fig. 1 and Fig. 2, it can for example be fixed on loading plate 3 as shown in the figure in gluing mode top covers securing member 2.Packing ring 12 is except the wearing and tearing that can reduce parts, and that can also reduce that vibrations bring may or be installed in the impact of training equipment on the axis 1 etc. to axis 1.Packing ring 12 can be such as elastomeric elements such as rubber washers.

According to the utility model, can expect that the part that the first operating portion 5 is used for contacting with the second operating portion 8 can be the tooth bar form, and the second operating portion 8 is the knob form that has with the tooth of described tooth bar mating reaction, is similar to be used for converted channel on the common equipment such as radio or to regulate the knob of sound size.Perhaps, the second operating portion 8 can be the shifting fork pull rod type structure, and its shift fork parts act on the first operating portion 5, and rod section is divided the outside that exposes to ball seat 7, by operating described pull bar part, drives described shift fork part, and then causes that the first operating portion 5 moves.In fact, any combination that the first operating portion 5 and the second operating portion 8 can be known by those skilled in the art, thus be arranged on the ball seat 7 near loading plate 3 and operationally touch the first operating portion 5 and can control in other words the movement of the first operating portion 5 and realize lock function as long as satisfy the position of the second operating portion 8.

Should understand; more than description is all exemplary and nonrestrictive; for having read those skilled in the art described above; except given embodiment, any apparent change, modification of making on the basis of the utility model instruction and be equal to replacement and all belong to the scope that the utility model is protected.In addition, although the utility model mainly is for the photography and vedio recording equipment, for the instrument of surveying and mapping with similar structures, and observation instrument such as telescope etc., the utility model is applicable equally.

Claims

1. axis that is used for photographic goods, comprise the pole (9) with first end and the second end, be connected with this first end and have the ball seat (7) of center pit and have the ball bowl (6) of the first operating portion (5), loading plate (3) and the second operating portion (8) with this ball seat (7) one formation, wherein in the center pit of the outer wall of this ball bowl (6) by at least a portion of this first operating portion (5) being inserted this ball seat (7) and contact with the inwall of this ball seat (7), it is characterized in that this second operating portion (8) is arranged on described ball seat (7) upward and can be operated with its at least a portion near described loading plate (3) and contacts and lock this first operating portion (5).

2. axis according to claim 1, it is characterized in that, described the first operating portion (5) axially has the annular groove (51) that is inclined-plane annular groove shape on the outer surface along it, wherein, have hole (72) in the upper position relative with this annular groove (51) of this ball seat (7), described at least a portion of this second operating portion (8) is passed this hole (72) and is matched with this annular groove (51), forms the inclined-plane that can match with the inclined-plane of this annular groove (51) in described at least a portion of this second operating portion (8).

3. axis according to claim 2, it is characterized in that, upper another hole (41) that is provided with in the position radially relative with described hole (72) of described ball seat (7) is used for admitting securing member (4), and this securing member (4) allows described ball bowl (6) to do limited charging into axial motion in the described annular groove (51).

4. axis according to claim 2, it is characterized in that, described ball bowl (6) has through hole at the center, and at least a portion of described the first operating portion (5) can pass this through hole cooperates adjustable mechanism so that described loading plate (3), described the first operating portion (5) and described ball bowl (6) form.

5. axis according to claim 4 is characterized in that, described the first operating portion (5) has the described through hole that can't pass described ball bowl (6) and the part that is positioned at thus this ball seat (7).

6. according to claim 4 or 5 described axis, it is characterized in that: between described ball bowl (6) and described the first operating portion (5), between this first operating portion (5) and described ball seat (7), place respectively the elasticity spheric washer have with the concentric central through hole of the described through hole of the described center pit of this ball seat (7) and this ball bowl (6), so that this first operating portion (5) passes therethrough.

7. axis according to claim 1 and 2, it is characterized in that: described at least a portion of this second operating portion (8) is leading section (85), this second operating portion also comprises the web member (83) that consists of with this leading section one and the handle (82) that connects with the anti-rotation of this web member by securing member (86) and spring (84), and this securing member (86) and this spring (84) form telescopic mechanism in order to control described leading section (85) jointly with this web member (83) thereby the mobile movement of controlling the first operating portion (5).

8. axis according to claim 1 is characterized in that, the part (5) that contacts with this second operating portion (8) of this first operating portion consists of with the tooth bar form, and this second operating portion (8) has the tooth with described tooth bar mating reaction.

9. axis according to claim 1, it is characterized in that, described pole (9) has the groove (91) that runs through whole pole along its length direction, and the teat that closely engages with this groove (91) formation is arranged in the bottom of described ball seat (7) in case spline is moving.

10. according to claim 1 or 9 described axis, it is characterized in that, in gluing mode described ball seat (7) is fixed on the described first end of described pole (9) in case spline is moving.