CN1129324A - Leg portion attaching structure of compact tripod - Google Patents
Leg portion attaching structure of compact tripod Download PDFInfo
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- CN1129324A CN1129324A CN 95115895 CN95115895A CN1129324A CN 1129324 A CN1129324 A CN 1129324A CN 95115895 CN95115895 CN 95115895 CN 95115895 A CN95115895 A CN 95115895A CN 1129324 A CN1129324 A CN 1129324A
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Abstract
A central part which surrounds an object mounting base forms a leg mounting hole, in which three leg parts can be respectively installed. Small screw parts for fixing the leg parts which are formed at the central part of the object mounting base are positioned at the interior of the leg mounting hole and are screwed along the vertical shaft line of the object mounting base. Expansion function which is vertical to the vertical shaft direction is generated on the outer peripheral surface of an expansion deformation fixed part by the screwing function of the small screw parts for fixing the leg parts. The root parts of the three leg parts and the outer peripheral surface of the expansion deformation fixed part are pressed tightly and contacted by the expansion function with inward direction at each leg part. All the leg parts are simultaneously fixed on the object mounting base by the tight pressing and contact force, wherein, the leg parts are not easy to be pulled out of the object mounting base.
Description
The present invention relates to a kind of improved compact tripod leg portion attaching structure, this tripod is fit to use at camera and miniature camera, TV stand, photo frame, fixes frame of various menu price cards and document or the like.And be used to connect seat of portable lamp or the like.
For example, a gripping object, as camera, miniature camera etc. are installed on the compact tripod.General compact tripod uses leg portion attaching structure as shown in Figures 1 to 3.In this leg portion attaching structure.Coupling arrangement 51a is arranged above the article mount pad 57.Coupling arrangement 51a is the clamping gripped object removably.For example, the shank mounting hole 52 three positions is respectively formed on the lower surface of article mount pad 51, and to settle and to fix the root of three shanks 53 in advance, each shank is tube-in-tube structure.The root of three shanks 53 inserts respectively in these shank mounting holes 52.Afterwards, a suitable adhesive coated will be adorned between the root of hole 52 and shank 53 at shank, so that shank mounting hole 52 and shank 53 are bonded to each other fixing.
In this case, the compact tripod of the compact tripod compact tripod that is divided into the shank fixed type of opening shown in Figure 1 and parallel shank fixed type shown in Figure 3.In the shank fixed type compact tripod of opening, three shanks 53 are fixed in article mount pad 51, and wherein each of three shanks 53 has predetermined opening angle with respect to article mount pad vertical axis.In the small-sized triangle of parallel legs fixed type is stranded, three shanks 53 are fixed in article mount pad 51, wherein each of shank 53 is parallel to the vertical axis of article mount pad 51.
In parallel legs fixed type compact tripod, when using tripod, three shanks by the user with finger strength open desired angle.Afterwards, tripod uses at the state of opening.
Yet, when the leg portion attaching structure of this system used in each of these tripods, each of shank 53 had the outside surface that covers the flexible plastic layer, under a stable condition, even when shank 53 used cementing agent fixedly, shank 53 was easy to pull out shank mounting hole 52.
In addition, relevant for the distribution of cementing agent performance between the cementing agent that uses with owing to shank 53 thickness scatter the problem that causes that pull off strength scatters, these problems are the very big shortcomings of this leg portion attaching structure.
Therefore, an object of the present invention is the leg portion attaching structure of compact tripod, wherein leg portion attaching structure on constituting be simple and rigidity and be easy to assemble, and even when the distribution of shank thickness shank to be pulled out the article mount pad be difficult, and the distribution of shank pull off strength can be reassembled.
According to first structure of the present invention, above-mentioned purpose can obtain by the leg portion attaching structure of compact tripod, and this structure comprises:
Be used for the removably article mount pad of clamping gripped object;
The root of three shanks is mounted on below the article mount pad in predetermined a setting;
In three shanks each becomes tubular member to constitute by the clavate that outside surface is coated with the flexible plastic layer;
At three position article mount pads, shank mounting hole and annular insertion groove are arranged;
Three shank mounting holes three angle intervals that are equal to each other of separating are arranged along middle section part neighboring, this middle section has predetermined shape, so that the root of three shanks can be respectively charged into three shank mounting holes;
Annular insertion groove is set so that its inside with these three shank mounting holes links to each other;
By the flexible fastening piece that the bottom branch constitutes, three elastic deformation parts, each approximate band shape is stretched out fixed part so that the middle body area surface of base plate and article mount pad contacts.
One end of three elastic deformation parts is connected to the neighboring part of base plate continuously three positions.
The other end of three elastic deformation parts is free ends;
Stretching out fixed part stretches out on each elastic deformation part short side direction two minor face;
Fixture is used for the bottom parts of flexible fastening piece is connected to the article mount pad;
The formation of leg portion attaching structure makes partly each of each adjacent elastic deformation stretch out the interior side direction elastic deformation of fixed part at leg portion attaching structure, be supported at the outside surface of the root that stretches out each shank between the fixed part and stretch out between the fixed part, when partly inserting the interior insertion groove of article mount pad with three elastic deformations of convenient flexible fastening piece, three shanks are individually fixed in the article mount pad, and the bottom parts of flexible fastening piece is connected in the middle section of article mount pad by stationary installation.
According to second structure of the present invention, above-mentioned purpose also can reach by the compact tripod leg portion attaching structure, and this structure comprises:
The article mount pad that is used for detachable clamping gripped object;
Three shanks, their root by predetermined arrange to install and be fixed in this article mount pad below;
Each of three shanks is formed by clavate or tubular member, and this clavate or tubular companion's outside surface cover the flexible plastic layer;
The article mount pad has shank mounting hole and an annular groove part three positions;
Three shank mounting holes have the interval that equates mutually at three angular regions that separate along the middle section upper periphery, and middle section has a predetermined shape, and the root of such three shanks is respectively charged into three shank mounting holes;
The annular groove part is set, it is linked to each other with an inside of three shank mounting holes;
Dilatational strain fixture is as positive cylindricality or the taper elastomer element can expand and in the direction distortion approximately perpendicular to the cylindricality axis of dilatational strain fixture, this moment, pressure was applied in the dilatational strain fixture at the cylindricality axis direction;
Be used for the dilatational strain fixture is connected to the stationary installation of the annular groove part bottom surface of article mount pad;
The formation of leg portion attaching structure contacts the outer peripheral face of dilatational strain fixture and the root pressure of three shanks, here the dilatational strain effect that produces by use dilatational strain fixture realizes that this moment, the dilatational strain fixture was connected to the bottom surface of the annular groove section of article mount pad by stationary installation;
This moment, three shanks were fixed in the article mount pad by pressure contact force.
According to the 3rd structure of the present invention, above-mentioned purpose also can reach by the leg portion attaching structure of a compact tripod, and this structure comprises:
One is used for the removably article mount pad of clamping gripped object;
Its root is installed and is fixed in three shanks below the article mount pad by setting in advance;
Each of three shanks is formed by clavate or the tubular member that outside surface covers the flexible plastic layer;
The article mount pad has shank mounting hole and an annular groove three positions;
Three shank mounting holes have the interval that is equal to each other at three angular regions that separate along the middle body neighboring, and there is predetermined shape in this central portion zone, and the root of such three outer shanks can be respectively charged into three shank mounting holes;
The annular groove section that is provided with links to each other with an inside of these shank mounting holes;
A wedge effect fixture that is formed by hard material resembles columnar member or column, and it has the predetermined taper outer peripheral face;
Be used to connect the stationary installation of wedge effect fixture to article mount pad annular groove section bottom surface, wherein the wedge effect fixture can move at columnar member or column axis direction;
The formation of leg portion attaching structure makes wedge effect fixture outer peripheral face compress the inboard of three shank roots of contact, this is to realize by the wedge effect that the taper that utilizes the wedge effect fixture produces, and is connected in the bottom surface of the annular groove section of article mount pad by stationary installation at this process wedge effect fixture;
This moment, three shanks were fixed in the article mount pad by compressing contact force.
In above-mentioned compact tripod leg portion attaching structure, the shank mounting hole forms around the middle body zone of article mount pad, this this shank mounting hole site is in each parallel legs fixed and open shank fixedly in the shape tripod, the root of such three shanks shank mounting hole of packing into.The stationary installation that is used for fixing shank that forms at article mount pad middle section is positioned at the medial region of these shank mounting holes, so that shank connects along the vertical axis of article mount pad.
Elastic deformation effect, expansion or wedge effect are produced by an effect that is used for fixing the stationary installation of shank in the shank fixture, for example flexible fastening piece, dilatational strain fixture, wedge shape dilatational strain fixture, wedge effect fixture, expansion wedge effect fixture etc.The outer peripheral face of shank fixture is by using the root that presses (pressure contact) each shank in one of these effects of this generation in interior side direction.Three shanks are fixed in the article mount pad simultaneously by the pressure that produces this moment.Wherein do not have shank to be easy to pull out the article mount pad, in this case, leg portion attaching structure also constitutes the structure of a simple and rigidity.
Other purpose of the present invention and advantage will be conspicuous from the description to this bright preferable enforcement of reference accompanying drawing.
Fig. 1 is a skeleton view, has represented the structure that a common compact tripod syndeton shank divides, and when seeing the shank branch syndeton of tripod obliquely from the top, between three shanks divide predetermined open angle is arranged;
Fig. 2 has been a perspective representation when shank branch syndeton is reversed, the formation of the shank branch syndeton of the compact tripod of the Fig. 1 that tilts to see from the top;
Fig. 3 is a skeleton view, has represented when seeing shank branch syndeton from the below, and three leg fixing common compact tripod shanks parallel to each other divide the lower state of syndeton;
Fig. 4 is a plan view, and expression is according to the leg portion attaching structure of the compact tripod of first embodiment of the invention, and wherein compact tripod has parallel shank and divides fixed type and shank branch syndeton to see from the below;
Fig. 5 is the cross-sectional view along Fig. 4 A-A direction of arrow;
Fig. 6 is a skeleton view, and expression is used for the structure of the flexible fastening piece of Fig. 4 syndeton shank branch.
Fig. 7 is the leg portion attaching structure of a plan representation according to the small and exquisite tripod of second embodiment of the invention, and its middle-size and small-size tripod is parallel shank branch fixed form, and shank branch syndeton is from the bottom.
Fig. 8 is the cross-sectional view along Fig. 7 direction of arrow B-B line;
Fig. 9 is the cross-sectional view corresponding to each of Fig. 5 and Fig. 8, has represented the compact tripod leg portion attaching structure according to third embodiment of the invention, and wherein A type tripod has parallel shank fixed type;
Figure 10 is a skeleton view, the formation of expression wedge effect fixture, and it uses in the 3rd embodiment shown in Figure 9;
Figure 11 is a cross-sectional view, has represented the example of a variation of shank branch syndeton among second embodiment.
To the preferred embodiment of the leg portion attaching structure of small-sized tripod of the present invention be described in detail below with reference to accompanying drawing, the formation of leg portion attaching structure and operation will make an explanation.
In first embodiment, the present invention is applied to the small-sized tripod of a parallel arms part fixed type as shown in Figure 3.
Fig. 4 is the view on a plane, has represented the shank branch syndeton of a machine made compact tripod of parallel arms part of first embodiment of the invention, and wherein shank branch syndeton can be seen from the bottom.Fig. 5 is the cross-sectional view along Fig. 4 A-A line direction of arrow.Fig. 6 is a skeleton view, has represented to use the structure at the flexible fastening piece of Fig. 4 leg portion attaching structure.
In Fig. 4 to 6, an article mount pad 1 is used for the article that removably keep one to be fixed, for example camera etc.Article keep seat, are to be formed by an element that is similar to the integral body of cylindricality and predetermined diameter.Not shown fixedly article coupling arrangement be arranged in article mount pad 1 above.For example, fixedly the article coupling arrangement has this well-known structure of the tripod screw of being called.
An insertion groove 1b, the annular of a mid diameter wherein, its approximate middle section that is formed at the lower end 1a of article placement seat 1.For example, insertion groove 1b is formed at the zone of the article mount pad 1 on the vertical axis.That be used for fixing and have a middle section that is formed at annular insertion groove 1b than minor diameter cylindrical section 1c.A female screw part 1d is used for twisting a Screw that is used for fixing 4, and it is formed at the fixedly middle section of cylindrical section 1c as the fixture of describing later.
Shank divides mounting hole 2 to be formed on three mutual angle positions and equates the place at interval, and shank divides mounting hole 2 parts to link to each other with the annular insertion groove 1b of article mount pad 1 like this.For example, the vertical axis that each shank divides the setting of mounting hole 2 to be parallel to article mount pad 1 has predetermined diameter on a pitch circle.
Three shanks that three shanks divide mounting hole 2 to have internal diameter that the back is described respectively divide 3,3 ' and 3 " foundation portion packs in these three shank mounting holes 2.Shank mounting hole 2 has can keep installing three shanks 3,3 ' and 3 " have the degree of depth in the precalculated position of imitating fixation at them.For example, the degree of depth of shank mounting hole 2 is arranged so that definite amount is darker than the degree of depth of the annular insertion groove 1b on article mount pad 1.
For example, first, second and the 3rd shank divide 3,3 ', 3 " each constitute by one three utmost point cover leg formula shank branch.It has a tubular shape and constitutes by the center section of the root portion of maximum gauge, second maximum gauge with as the head portion of the minimum diameter of bottom insertion portion.When the contraction in length of tripod, center section is shortened and enters in the root, and head portion is shortened and enters in the center section.This telescopic leg structure is known.
Shank divides 3,3 ' and 3 " flexible to a kind of like this degree, promptly divide can be by people's finger strength bending for these shanks, shank divides 3,3 ' and 3 " the flexible plastic layer that constitutes by suitable material of each outside surface cover and a thickness that is fit to arranged.
A Screw that is used for fixing 4 is used in the fixedly cylindrical section 1C that the bottom parts 11 of removably fixing a flexible fastening piece 10 arrives article mount pad 1 as a tool stationary installation.Flexible fastening piece 10 is used for simultaneously dividing 3,3 three shanks ' and 3 " be fixed to the lower end of article mount pad.
In this case, the diameter of bottom parts 11 peripheral edge portions is arranged to divide 3 when three shanks, 3 ' and 3 " root portion be loaded into separately shank when dividing in the mounting hole 2, be provided with the outer rim of bottom parts 11 and each and be positioned at three shanks and divide 3,3 ' and 3 " outside surface of interior leg contacts.
Three elastic deformation parts 12,12 ' and 12 " each approximately have as holistic band shape, wherein each elastic deformation other end partly is a free end.When flexible fastening piece 10 is connected to the fixedly cylindrical section 1C of article mount pad 1, three elastic deformation parts 12,12 ', 12 " can be inserted into the annular insertion groove 16 of article mount pad 1 from free end one side of each elastic deformation part.
Outshot 12a and 12b are formed on the first elastic deformation part 12, and stretch out on the side directions of the first elastic deformation part 12 on the dual-side.Outstanding fixed part 12 ' a and 12 ' b also be formed at the second elastic deformation part 12 ' on, and the second elastic deformation part 12 on the dual-side ' short side directions on stretch out.Stretch out on the short side directions that an outstanding fixed part (not having reference number) also is formed on the 3rd elastic deformation portion 12 " on, and in the 3rd elastic deformation part 12 on the dual-side ".
These six are stretched out fixed part 12a, whole three shanks of handlebar respectively of 12b divide 3,3 ' and 3 " root portion fixedly enter the function that the corresponding shank on the article mount pad 1 divides mounting hole 2.
In the following description, be formed on the extension 12a of the first elastic deformation part 12 and 12b by use and be formed on the second elastic deformation part 12 ' extension 12 ' a and 12 ' b each function of explaining six extensions as exemplary.
In a kind of state, wherein three shanks divide 3,3 ' and 3 " root portion be placed in separately corresponding shank and divide in the mounting hole 2; three elastic deformation parts 12 of flexible fastening piece 10; 12 ' and 12 " be inserted in annular insertion groove 1b in the article mount pad 1 from elastic deformation part free end portion, this moment elastic deformation part 12,12 ' with 12 " along respective leg part 3,3 ' and 3 " outside surface of root portion moves.
At this moment, fixed part 12 ' a that stretches out that stretches out fixed part 12b and the second elastic deformation part, 12 ' left hand of the first elastic deformation part, 12 right hands inserts annular insertion groove 1b, divides this moment the outside surface of 3 root portion to be supported on left hand and the right hand side by stretching out fixed part 12b and 12 ' a at first shank of installment state.
Afterwards, the fixedly cylindrical section 1c face of the bottom parts 11 of flexible fastening piece 10 and article mount pad 1 contacts, and fixing by the Screw 4 that is used for fixing.In this process, the first elastic deformation part 12 and the second elastic deformation part 12 ' in the bending of interior side direction predetermined amounts.Elastic deformation part 12 and 12 ' divide the outside surface of 3 root portion to contact with right-hand side pressure leftward with first shank.Like this, elastic deformation part 12 and 12 ' fastening first shank divides the outside surface of 3 root portion.
Therefore, if this moment, two values that compress contact force (fastening force) of stretching out fixed part 12b and 12 ' a made first shank divide 3 can not easily be pulled out shank and divide placement hole 2, divide 3 just to be fixed to 3 article mount pads 1 at this state first shank, wherein first shank divides 3 to be not easy to be drawn out shank and to divide placement hole 2.
At this moment, first shank divides 3 outside surface to be covered by the flexible plastic layer, the flexible plastic layer and be enough to stop the first shank branch to be drawn out and come off so that two each of stretching out fixed part 12b and 12 ' a are nipped.
This prevention shank branch pull out or the effect of coming off compress the 3rd elastic deformation part 12 that the right hand that contact force also is created in the second elastic deformation part 12 protrudes fixed part 12 ' b and adjoins mutually " protrusion fixed part (no reference number) between.In addition, this effect also is created in the 3rd elastic deformation part 12 " another left hand that protrudes the fixed part (no reference number) and the adjacent first elastic deformation part 12 protrude between the fixed part 12a.Therefore, two remaining shanks divide 3 ' and 3 " also by stoping the shank branch to pull out and fall and effect is fixed in corresponding shank and is divided mounting hole 2, do not have this moment shank divide 3 ' and 3 " be easy to pull out shank and divide mounting hole 2.
Therefore, in first embodiment, elastic deformation part 12,12 ' and 12 " spacing make adjacent the stretching out fixed part and can implement the effect that prevention shank branch is pulled out or come off of this three couple.In addition, first to the 3rd elastic deformation part 12,12 ' and 12 " one outwardly the free state of direction one opening angle is arranged, its value makes by using three pairs to stretch out fixed part and produce the contact force that compresses that prevention shank branch pulls out-come off.
As mentioned above, in first embodiment, when the base plate part 11 of flexible fastening piece 10 is connected to the fixedly cylindrical section 1C of article mount pad 1, can be by being created in three elastic deformation parts 12,12 ' and 12 " the contact force that compresses be fixed in article mount pad 1 simultaneously, this moment three shank branches be difficult for being drawn out article mount pad 1.
Leg portion attaching structure according to the compact tripod of second embodiment of the invention below will be described.Fig. 7 is a plan view, and expression is according to the leg portion attaching structure of the compact tripod of second embodiment of the invention, and wherein compact tripod is parallel shank fixed type, and leg portion attaching structure is from down.Fig. 8 is the cross-sectional view along Fig. 7 B-B line direction of arrow.
In Fig. 7 and Fig. 8, article mount pad 21 is corresponding to the article mount pad 1 of first embodiment.A central recess part 221b is formed on the central area of the lower surface 21a of article mount pad 21, and the annular groove by a predetermined diameter and concentration partly constitutes, a female screw part 21c is used to be threaded a Screw 25 and is used for the distortion location as fixture in addition, the back will be described, and this fixture is positioned at the middle section of central recess part 21b.
Three shanks divide mounting hole 22 to divide mounting hole 2 corresponding to the shank of first embodiment.Three shanks divide mounting hole 22 to be formed at three angled positions that the space equates, this position is in the inner annular wall of the drop-center part 21b of article mount pad 21, so that three shank mounting holes 22 are parallel to the vertical axis of article mount pad 21, and on the pitch circle of a predetermined diameter.
Make three shanks divide 23 root to be loaded into separately in the degree of depth of three shank mounting holes 22 of three positions and can be maintained at precalculated position separately with enough clamping actions after the shank mounting hole 22 at three shanks.For example three shanks predetermined depth of dividing mounting hole 22 is darker than the drop-center part 21b of article mount pad 21.
Three shanks divide 23 corresponding to first to the 3rd shank in first embodiment divide 3,3 ' and 3 ".The root of three shanks 23 is installed in respectively in three shank mounting holes 22.
A dilatational strain fixture 24 is used for fixing simultaneously three shanks 23 that are contained in the shank mounting hole 22.
Force of compression is putting on dilatational strain fixture 24 perpendicular to article mount pad 21 axis directions, and dilatational strain fixture 24 is arranged on the bottom surface of central fovea slot part 21b at that time.In the following description, apply the time of force of compression, be called the compression set time.In the compression set time, dilatational strain fixture 24 can expand and be out of shape approximately perpendicular to the pillars of article placement seat 21 or the horizontal direction of cylinder thing axis.For example, dilatational strain fixture 24 becomes a column or cylindric elasticity, and it uses elastic deformation wadding such as synthetic rubber or flexible plastic.
In second embodiment, dilatational strain fixture 24 presses (enter pressure contact) three shanks to divide 23 root portion simultaneously, and this is by use the dilatational strain effect in side direction the compression set time of dilatational strain fixture 24.Add this pressure by making, three shanks divide 23 to be fixed in article mount pad 21.
Therefore, the external diameter value of dilatational strain fixture 24 should make when dilatational strain fixture 24 during in free state, the outer peripheral face of dilatational strain fixture 24 not be contained in shank and divide three shanks in the mounting hole 22 to divide 23 outside surface to contact.The lateral deformation of the external diameter value of dilatational strain fixture 24 owing to the effect of the force of compression that puts on dilatational strain fixture 24 in the compression set time in the vertical axis direction, and since in the compression set time because the effect of predetermined contact pressure (fastening force), the outer peripheral face of dilatational strain fixture and three shanks in installment state divide 23 outside surface to contact.
The height of dilatational strain fixture 24 comprises from the overhang of the lower surface 21a of article mount pad 21, and when three shanks divided 23 root portion to be fixed in corresponding separately shank mounting hole 22, three shanks 23 can be in place.This time is the shank closure state time.
A minor thread patchhole 24a is used for along stretching a minor thread spare 25, and this part is formed at the middle section of dilatational strain fixture 24 as the distortion fixture of stationary installation described later.The internal diameter of Screw hand-hole 24a is than the little or approximately equal of external diameter in order to be out of shape fixing Screw spare 25.
Be used to be out of shape the Screw patchhole 24a of fixing Screw spare 25 extend through dilatational strain fixtures 24, be screwed into the female screw part 21c of article mount pad 21 by a suitable pad 26 and screw thread.
In the formation of above-mentioned second embodiment, dilatational strain fixture 24 is used to be out of shape fixing Screw spare 25 by use and packing ring 26 is connected to the bottom face that article are out of shape the drop-center part 21b of placement seat 21.By the female screw part 21c of article placement seat 21 and the effect of screw threads for fastening power, the dilatational strain fixture expands and lateral deformation.The outer peripheral face of dilatational strain fixture 24 is at this moment owing to dilatational strain power is pressed the outside surface that contacts three shanks 23.This moment, three legs were difficult for being drawn out shank mounting hole 22 at that time because three shanks 23 of pressure contact force (fastening force) effect are fixed to each self-corresponding shank mounting hole 22 simultaneously.
In the example of the variation of second embodiment, can use the dilatational strain fixture 24 that another kind of dilatational strain fixture substitutes columnar shape.This another kind of dilatational strain fixture can have the wedge shape outer peripheral face, maybe can have spherical or spindle shape outer peripheral face, though these dilatational strain fixtures are not shown.
In the description below this, the distortion example uses the structure of wedge shape dilatational strain fixture and wedge shape dilatational strain fixture and operation to be described below.
In this distortion example, wedge shape dilatational strain fixture has except outer peripheral face and with the dilatational strain fixture 24 that columnar shape is arranged same structure and material is arranged.The wedge shape outer peripheral face of wedge shape dilatational strain fixture is arranged to make the effective diameter of wedge shape dilatational strain part bigger than bottom surface diameter, and this moment, the wedge shape outer peripheral face separated from the bottom surface of the drop-center part 21b of article mount pad.
In stating the variation example structure of second embodiment, putting on by wedge shape dilatational strain fixture that three shanks divide 23 pressure contact force and compared by the pressure contact force that cylindricality dilatational strain fixture 24 produces is to produce equivalently.
Leg portion attaching structure according to the compact tripod of third embodiment of the invention below will make an explanation.Fig. 9 is a cross-sectional view, shows a leg syndeton according to third embodiment of the invention.Wherein compact tripod is a fixedly pattern of a parallel legs.Figure 10 is a skeleton view, shows the structure of use at the wedge effect fixture of the 3rd embodiment.
In the 3rd embodiment, the wedge effect fixture 31 that is formed by a kind of hard material is used to the dilatational strain fixture 24 of second embodiment shown in alternate figures 7 and 5.Three shanks branches are fixed in article mount pad 21 by wedge effect, and this wedge effect is to provide by the wedge effect fixture of replacing on the vertical axis direction of article mount pad 21 31.
Therefore, the following 21a of 21, one mount pads of article mount pad, central recess part 21b, female screw part 21c, in shank mounting hole 22 and three shanks 23 of three positions, the corresponding part of the similar that has in second embodiment.Use or not as the Screw of fixing as distortion with the Screw spare 25 that fixes in the 3rd embodiment, is similar to the structure as the fixing minor thread 25 of distortion at second embodiment but have.
For example metal material, hard plastic material form the wedge effect fixture 31 that uses among the 3rd embodiment by hard material.Be similar to the cylindricality dilatational strain fixture 24 of second embodiment shown in Fig. 7 and Fig. 8, wedge effect fixture 31 is the truncated cone shape that predetermined wedge shape outer peripheral face is arranged and forms.
In this case, the outer peripheral face of wedge effect fixture 31 makes the effective diameter of wedge effect fixture 31 bigger than the diameter of the side of bottom surface, and at this moment, outer peripheral face separates from the bottom surface of the central fovea slot part 21b of article mount pad 21.In addition, minor thread patchhole 31a who is used to insert the Screw spare 25 that is used for fixing is formed on the middle section of wedge effect fixture.
In the 3rd embodiment, wedge effect fixture 31 is installed to the drop-center part 21b of article mount pad 21, and the Screw spare 25 by being used for fixing ' be connected to central fovea slot part 21b, this moment, wherein three shanks 23 were respectively charged into three shank mounting holes 22 of article mount pad 21.
At this moment, the outer peripheral face of wedge effect fixture 31 contacts with the root of three shanks 23 securely by wedge effect, and this wedge effect is to be connected in the article mount pad by the tapering at the wedge effect fixture 31 on the article mount pad to provide.Three shanks of wedge effect fixture divide 23 root to press the internal face that is positioned at respective leg portions mounting hole 22 outsides simultaneously by contact pressure this moment.
By snap-in force, three shanks 23 are fixed to article mount pad 21 simultaneously in this case, and wherein three shanks 23 are difficult for pulling out article mount pad 21.Therefore, in the 3rd embodiment, the outer peripheral face of wedge effect fixture 31 is tapers, so that outer peripheral face has an inclination angle to be enough to produce snap-in force.In the 3rd embodiment, wedge effect fixture 31 is made of hard material, so that packing ring 26 can be removed.
Figure 11 represents to use the example of a variation of the second embodiment leg portion attaching structure of wedge effect.In this changes example, use expansion wedge effect fixture 31 ' and the expansion wedge effect countersunk minor thread spare 32 of countersunk head is arranged.Expansion wedge effect fixture 31 ' by a countersunk pad 31 ' provide is provided in an elastomeric cylindricality or tapered expansion distortion fixture in advance.For example use cylindricality dilatational strain fixture 24 or a not shown tapered expansion distortion fixture in above-mentioned second embodiment.
Be similar to the above-mentioned Screw patchhole 24a in second embodiment, Screw patchhole 31 ' a be formed at expansion wedge effect fixture 31 ' middle section.In other similar of using in the embodiment of this variation in the basic structure of the leg portion attaching structure in second embodiment.
In this case, for example, be formed on wedge effect fixture 31 ' the axis direction of the maximum gauge of countersunk pad 31 ' b and depth ratio this countersunk head littler than the maximum gauge of the countersunk head of expansion wedge effect countersunk Screw spare 32 on thickness dark.
In the embodiment of this variation, the bottom surface of the central fovea slot part 21b of expansion wedge effect fixture 31 ' be installed in article mount pad 21 and be fixed to the bottom surface by expansion wedge effect countersunk Screw spare 32, this moment, the root position of three shanks 23 was respectively charged into corresponding shank mounting hole 22.In this fixation procedure, immerse oneself in part and nip and immerse oneself in to fill up 31 ' b, immerse oneself in this moment to fill up 31 ' b by the expansion wedge effect immerse oneself in Screw spare 32 threaded function and towards extrapolation and expansion.
At this moment, the expansion of direction outwardly by push away-dilating effect and interlocking expansion wedge effect fixture 31 ' regional area produce so that produce wedge effect.Under this wedge effect, fixture 31 ' the regional area of expansion outer peripheral face press the root of three shanks 23 from the inboard.
Therefore, the root of three shanks 23 presses the internal perisporium face that is positioned at respective leg portions mounting hole 22 outsides by wedge effect.The root of three shanks 23 is because this pressure is fixed in article mount pad 21 simultaneously, and this moment, root was difficult for pulling out article mount pad 21.
Therefore, in the embodiment of this variation, the definite of shape partly, size, thickness etc. that immerse oneself in of expansion wedge effect countersunk Screw spare 32 decides can obtain such purpose.In addition, as the expansion wedge effect fixture 31 of elastomer element ' the setting of diameter, the degree of depth etc. of elastic deformation degree, countersunk pad 31 ' b this purpose can be obtained.
When expansion wedge effect fixture 31 ' outer peripheral face when forming as a conical surface, this conical surface has predetermined angle of inclination, the pressure contact force that is provided by expansion wedge effect countersunk Screw spare 32 pressure that is provided by the conical surface is provided is right after touch, so that further obtain wedge effect.
Another wedge effect fixture has a structure, the not shown extension that one of them shape is suitable be formed on wedge effect fixture 31 and expansion wedge effect fixture 31 ' the suitable localized area of outer peripheral face.In this situation, this another wedge effect fixture can be used for instead of wedges effect fixture 31 and expansion wedge effect fixture 31 '.
Use is enough to be applied to the compact tripod of the shank fixed type of opening except that the compact tripod of parallel legs fixed class shape at the variation of first embodiment, second embodiment, second embodiment and the 3rd leg portion attaching structure of implementing.
In this case, three elastic deformation parts 12,12 of flexible fastening piece 10 ', 12 " shape; the shape of dilatational strain fixture 24 and wedge shape dilatational strain fixture and wedge effect fixture 31 and expansion wedge effect fixture 31 ' shape divide corresponding open angle to be designed and change to suitable shape and three shanks with illustrated shape respectively.And the angle of opening corresponding to three shanks.
In the superincumbent description, the leg portion attaching structure of the compact tripod of each among one group of embodiment of Fig. 4 to 11 is illustrated.Yet, the invention is not restricted to these examples, the various modification in characteristic range of the present invention can be changed.
In the embodiment of Fig. 4 to 11, three telescopic shanks have been used.In the present invention, shank is not limited to telescopic.For example, shank can have fixing length.In addition, each shank can substitute the tubular member formation with the clavate part.In addition, each shank is made by using suitable material, for example the metal material of flexible metallic material, hardness plastic material, big rigidity etc.
As mentioned above, in the present invention, be used to install of the middle section formation of the shank mounting hole of three leg roots around the compact tripod and the article mount pad of the compact tripod of opening the shank fixed type of parallel legs fixed type.The Screw that is used for fixing shank is formed at article mount pad middle body zone and is positioned at the medial region of these shank mounting holes, and it is to constitute like this, so that minor thread is screwed into along the vertical axis of article mount pad.Elastic deformation effect, expansion or wedge effect are produced by the screw action that is used for from the Screw of the fixed leg of shank fixture, the shank fixture comprises flexible fastening piece, dilatational strain fixture, wedge shape dilatational strain fixture, the wedge effect fixture, compositions such as expansion wedge effect fixture.Three shanks are simultaneously owing to any touch that compresses or be right after that produces of these effects is fixed in the article mount pad, and shank is easily pulled out the article mount pad at that time.Therefore, when use was of the present invention, it was difficult that the shank branch is pulled out the article mount pad.Even the tripod that is fixed in the article mount pad with cementing agent when the thickness of shank and general shank is compared when being at random.In addition, can realize the leg portion attaching structure of compact tripod, wherein the pulling strengrth that shank is at random can be limited.
In this case, leg portion attaching structure can constitute according to a kind of structure simple and rigidity.In addition, the formation of leg portion attaching structure makes tripod be easy to assembling.Therefore above-mentioned effect can actual and effective acquisition.
The many different embodiment of the present invention are not breaking away from the principle and scope of the present invention and can make.Should be appreciated that the specific embodiments that the present invention is not limited to describe in the instructions except limiting in additional claim.
Claims (3)
1. the leg portion attaching structure of a compact tripod, it comprises:
An article mount pad that is used for a gripped object of removably clamping;
Three shanks, its root be mounted by predetermined arrangement and be fixed in this article mount pad below;
Each of three shanks is formed by clavate or the tubular member that outside surface covers the flexible plastic layer;
Described article mount pad has shank mounting hole and an annular insertion groove three positions;
Three shank mounting holes have the interval that is equal to each other at three angular regions that separate along the subregional neighboring of central portion of reservation shape, so that the root of described three shanks is respectively charged into three shank mounting holes;
The annular insertion groove that is provided with makes it link to each other with an inside of three shank mounting holes;
One by the elastic deformation part of the approximate band of bottom parts, three shapes with stretch out the flexible fastening piece that fixed part constitutes, so that the middle section face of base plate and article mount pad contacts,
One end of three elastic deformation parts is connected in the neighboring part of bottom parts continuously three positions,
The other end of three elastic deformation parts is free end portions,
Stretch out fixed part and on the both sides of each elastic deformation part, stretch out at short side direction,
Be used for the bottom parts of flexible fastening piece is connected to the stationary installation of described article mount pad;
Constitute leg portion attaching structure so that each of each adjacent elastic deformation part stretched out the interior side direction elastic deformation of fixed part at leg portion attaching structure;
Be supported at the root outside surface that stretches out each shank between the fixed part and stretch out between the fixed part, so that described three shanks are individually fixed in the article mount pad, three elastic deformations of described flexible fastening piece are partly inserted the insertion groove of described article mount pad at this moment, and the bottom parts of described flexible fastening piece is connected in the middle body of described article mount pad by stationary installation.
2. compact tripod leg portion attaching structure comprises:
An article mount pad that is used for a gripped object of removably clamping;
Three shanks, its root install by predetermined layout and be fixed in this article mount pad below;
Each of three shanks is formed by clavate or the tubular member that outside surface covers the flexible plastic layer;
Described article mount pad has shank mounting hole and an annular groove part three positions;
Three shank mounting holes have the interval that is equal to each other at three angular regions that separate along the neighboring, middle body zone of reservation shape, so that the root of described three shanks is respectively charged into three shank mounting holes;
The annular groove that is provided with partly makes it link to each other with an inside of three shank mounting holes;
Dilatational strain fixture as the elastomer element of a positive cylindricality or taper can expand in the cylinder axis direction approximately perpendicular to the dilatational strain fixture and distortion, and this moment, pressure put on the dilatational strain fixture along the cylindricality axis direction; Connect the stationary installation of dilatational strain fixture to described article mount pad annular groove degree face;
Constitute leg portion attaching structure, so that the dilatational strain effect that produces by described dilatational strain fixture makes the outer peripheral face of described dilatational strain fixture compress with three shank roots and contacts, this moment, the dilatational strain fixture was connected to the bottom surface of the annular groove part of described article mount pad by described stationary installation
The contact force that compresses that described three shanks produced by this moment is fixed in described article mount pad.
3. the leg portion attaching structure of a compact tripod comprises:
An article mount pad that is used for a gripped object of removably clamping;
Three shanks, its root with arrange to install in advance and be fixed in this article mount pad below;
Each of three shanks is formed by clavate or the tubular member that outside surface covers the flexible plastic layer;
Described article mount pad has shank mounting hole and an annular groove section three positions;
Three shank mounting holes have the interval that is equal to each other at three angular regions that separate along the subregional neighboring of central portion of reservation shape, so that the root of described three shanks is respectively charged into three shank mounting holes;
The annular groove that is provided with partly makes it communicate with three shank fixed orifice inside;
A wedge effect fixture that is formed by hard material for example has the cylindrical member of the outer peripheral face of predetermined tapering;
Be used to connect the stationary installation of described wedge effect fixture to the bottom surface of described article mount pad annular groove part, wherein said wedge effect fixture can move in the direction of column axis;
The leg portion attaching structure that constitutes, so that the outer peripheral face of described wedge effect fixture compresses each inside part of described three the shank roots of contact by the wedge effect of the tapering generation of described wedge effect fixture, in this process, wherein said wedge effect fixture is connected in the bottom surface of the annular groove of described article mount pad by described stationary installation; This moment, described three shanks branch was fixed in described article mount pad by compressing contact force.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12765/1994 | 1994-09-19 | ||
| JP1994012765U JP3009201U (en) | 1994-09-19 | 1994-09-19 | Small tripod leg mounting structure |
| JP12765/94 | 1994-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1129324A true CN1129324A (en) | 1996-08-21 |
| CN1071905C CN1071905C (en) | 2001-09-26 |
Family
ID=11814502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95115895 Expired - Fee Related CN1071905C (en) | 1994-09-19 | 1995-08-17 | Leg portion attaching structure of compact tripod |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3009201U (en) |
| CN (1) | CN1071905C (en) |
| TW (1) | TW280857B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118471733A (en) * | 2024-07-15 | 2024-08-09 | 四川九天真空科技有限公司 | Fixing mechanism, pressure switch and pressure switch preparation method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6422140B1 (en) * | 2017-11-21 | 2018-11-14 | 木村 太 | Tripod component |
-
1994
- 1994-09-19 JP JP1994012765U patent/JP3009201U/en not_active Expired - Lifetime
-
1995
- 1995-07-26 TW TW84107751A patent/TW280857B/en active
- 1995-08-17 CN CN 95115895 patent/CN1071905C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118471733A (en) * | 2024-07-15 | 2024-08-09 | 四川九天真空科技有限公司 | Fixing mechanism, pressure switch and pressure switch preparation method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW280857B (en) | 1996-07-11 |
| JP3009201U (en) | 1995-04-04 |
| CN1071905C (en) | 2001-09-26 |
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