JP3009201U - Small tripod leg mounting structure - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a leg mounting structure of a small tripod in which three legs are not easily slipped out while having a simple structure. [Structure] A leg insertion hole 22 into which a root portion of three leg portions 23 is inserted is provided around a central region of an article placing table 21, and the article placing table 2 located in an area inside the leg inserting hole 22.
A small screw 25 for fixing the leg portion is provided in the central region of 1 so as to be screwed along the vertical axis of the article mounting table 21. The screwing action of the small screw 25 for fixing the leg portion causes a bulging action in the direction orthogonal to the vertical axis on the outer peripheral surface of the bulging deformable fixing member 24, and this bulging action causes the bulging deformable fixing. The outer peripheral surface of the member 24 is pressed against the roots of the three legs 23 from the inside of each leg 23. By utilizing this pressure contact force, each leg portion 23 is simultaneously and easily fixed to the article mounting table 21 in a state where it does not fall out. Therefore, even if the legs 23
Even if the thickness of each of the legs is “varied”, it is possible to make it difficult for the leg portions 23 to come off the article mounting table 21.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is suitable for use as, for example, a tripod for a camera or a small TV camera, a TV stand, a photo stand, a stand on which various menus, price cards, documents, etc. are set, a work light mounting stand, etc. The present invention relates to an improvement in a leg portion mounting structure of a tripod.

[0002]

[Prior art]

 For example, in a small tripod on which an object to be held such as a camera or a small television camera is mounted, conventionally, as shown in FIGS. 9 to 11, a connecting means capable of detachably holding the object to be held on the upper surface. In the lower surface of the article mounting table 51 provided with 51a, for example, three leg fitting holes 52 for fixing the root portions of the three leg portions 53 of the telescopic structure in a fitting manner are previously formed or formed. , Insert the root portions of the three leg portions 53 into these leg insertion holes 52, and then apply an appropriate adhesive between the leg insertion holes 52 and the root portions of the leg portions 53, A leg mounting structure has been used in which the two 52 and 53 are adhesively fixed.

In this case, as shown in FIG. 9, the small tripod has an article mounting table 51 in which three leg portions 53 have respective predetermined opening angles with respect to the vertical axis of the article mounting table. 11 (hereinafter, referred to as “open leg fixing type small tripod”), and three legs 53 are parallel to each other with respect to the vertical axis of the article mounting table 51, as shown in FIG. There is a case (hereinafter, referred to as “parallel leg fixed type small tripod”) fixed to the article mounting table 51 in this state. In the case of the parallel leg fixed type small tripod, when the tripod is used, the three legs are opened to the desired opening angle by the human (user) 's fingertip force and then used in this open state.

[0004]

[Problems to be solved by the device]

 However, in any case, when the leg mounting structure of this type is adopted, in the case where the leg 53 having the outer surface coated with the soft plastic layer is used, even if the leg is fixed with an adhesive, A phenomenon may occur in which the portion 53 easily comes off the leg fitting hole 52. In addition, there is a problem that there is "variation" in the adhesive performance between the adhesives used, and if there is "variation" in the thickness of the leg portion 53, the drop strength is "variable" due to this. Problems have also arisen, which have been a major drawback of this type of leg mounting structure.

The present invention has been made in view of the above circumstances, and has a structure that is simple and robust in construction, and has a structure that facilitates work during assembly, and Even if there is a "stick", it is possible to make it difficult for the legs to come off from the article mounting table, and by providing a small tripod leg mounting structure that can suppress the "strew" of the pull-out strength. is there.

[0006]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the invention according to claim 1 is such that an article placing table for detachably holding an object to be held and a root portion of the article placing table are inserted into a lower surface of the article placing table in a predetermined arrangement. In a leg mounting structure for a small tripod, which comprises three legs fixed to the above, the three legs formed from a rod-shaped or pipe-shaped member whose outer surface is coated with a soft plastic layer, and a predetermined leg Three leg fitting holes, which are arranged along the outer periphery of the central region of the shape at equal angular intervals and into which the root portions of the three legs can be fitted, and the three leg fittings. The above-described article placing table having a ring-shaped insertion groove provided so as to communicate with a part of the inside of the hole, a bottom plate portion that makes surface contact with a central region of the article placing table, and one end portion of the bottom plate. It is connected to three parts of the outer peripheral part of the part and the other end is a free end. Elastic fixing member composed of three substantially strip-shaped elastically deforming portions formed as described above, and one protruding fixing portion that is protrudingly formed on each side of each elastically deforming portion in the short side direction. And a fixing means for attaching the bottom plate portion of the elastic fixing member to the article mounting table, wherein the three elastically deformable portions of the elastic fixing member are inserted into the insertion grooves of the article mounting table and are fixed by the fixing means. When the bottom plate portion of the elastic fixing member is attached to the central region of the article mounting table, the projecting fixing portions of the elastic deforming portions adjacent to each other are elastically deformed inwardly, respectively. By sandwiching the outer surface of each root part of each one leg located between each one of these protruding fixing parts, the three legs are fixed to the article mounting table, respectively. It is characterized by being configured.

According to the second aspect of the invention, an article placing table for detachably holding an object to be held, and a root portion are fixed to the lower surface of the article placing table in a predetermined arrangement in a fitting manner. In a leg mounting structure of a small tripod including three legs, the three legs formed from a rod-shaped or pipe-shaped member having an outer surface coated with a soft plastic layer, and a central portion having a predetermined shape. Three leg fitting holes, which are arranged along the outer circumference of the region at equal angular intervals and into which the root portions of the three legs can be fitted, and inside the three leg fitting holes, The article mounting table having a circular recess provided so as to communicate with a part thereof, and the cylindrical elastic member having a straight cylindrical shape or a taper, to which a compressive force acting in the direction of the cylindrical axis is applied. Sometimes, it deforms bulging in a direction substantially orthogonal to the cylinder axis. A bulge-deformable fixing member and fixing means for attaching the bulge-deformable fixing member toward the bottom surface of the circular recess of the article mounting table, wherein the bulge-deformable fixing member is provided by the fixing means. Utilizing the bulging deformation action of the bulging deformable fixing member that occurs when mounting toward the bottom surface of the circular concave portion of the mounting table, the outer peripheral surface of the bulging deformable fixing member is used for the three legs. It is characterized in that it is configured so that it is brought into pressure contact with the root portion, and the three legs are fixed to the article mounting table by the pressure contact force at this time.

According to a third aspect of the present invention, an article placing table for detachably holding an object to be held and a root portion are fixed to the lower surface of the article placing table in a predetermined arrangement by a fitting arrangement. In a leg mounting structure of a small tripod including three legs, the three legs formed from a rod-shaped or pipe-shaped member having an outer surface coated with a soft plastic layer, and a central portion having a predetermined shape. Three leg fitting holes, which are arranged along the outer circumference of the region at equal angular intervals and into which the root portions of the three legs can be fitted, and inside the three leg fitting holes, The article mounting table having a circular recess provided so as to communicate with a part thereof, and a wedge action formed as a cylindrical member or a cylindrical member made of a hard material and having a predetermined taper on the outer peripheral surface. The fixing member and the wedge-action fixing member are cylindrical. Or a fixing means for attaching the wedge action fixing member to the bottom surface of the circular recess of the article mounting table in a state of being displaceable in the direction of the cylindrical axis, the bottom surface of the circular recess of the article mounting table being fixed by the fixing means. By utilizing the wedge action due to the taper of the wedge action fixing member that occurs in the process of mounting toward the above, the outer peripheral surface of the wedge action fixing member is pressed against each inner part of the root parts of the three legs, It is characterized in that the three legs are fixed to the article mounting table by the pressure contact force.

[0009]

[Action]

 With the leg mounting structure of the small tripod configured as described above, in the case of the parallel leg fixed type small tripod and the open leg fixed type small tripod, the central area of the article mounting table is A leg insertion hole is provided so that the base portions of the three leg portions can be inserted into the periphery, and the vertical axis of the article mounting table is located in the central area of the article mounting table located inside the leg insertion hole. A fixing means for fixing the leg portion is provided so as to be mounted along the base.

By the action of the fixing means for fixing the leg portion, the elastic fixing member, the bulging deformable fixing member, the tapered bulging deformable fixing member, the wedge action fixing member, the bulging wedge action fixing member, etc. An elastic deformation action, a bulge action, or a wedge action is caused in the leg fixing member, and by utilizing any one of these actions, the outer peripheral surface of the leg fixing member is applied to the root portion of each leg. Try to apply pressure from the inside of the legs. Then, by the pressing force at this time, the three legs are fixed to the article placing table at the same time without being easily pulled out. In this case, the leg mounting structure is also structurally simple and robust.

[0011]

【Example】

 The structure and operation of the leg mounting structure for a small tripod according to the present invention will be described below with reference to the illustrated embodiments. The first embodiment of the present invention is an embodiment in which the present invention is applied to a parallel leg fixed type small tripod as shown in FIG.

FIG. 1 is a plan view of a leg mounting structure of a first embodiment when the present invention is applied to a parallel leg fixed type small tripod, as seen from below, and FIG. FIG. 3 is a cross-sectional view taken along the line AA of FIG. 3, and FIG. 3 is a perspective view of an elastic fixing member used in the leg mounting structure of FIG. 1 to 3, reference numeral 1 denotes an article mounting base for detachably holding an object to be held such as a camera, which is formed as a generally cylindrical member having a predetermined diameter. On the upper surface thereof, there is provided a held object attaching device (not shown) having a structure known per se, for example, a so-called "tripod screw".

On the other hand, on the lower surface 1a of the article mounting table 1, a ring-shaped insertion groove 1b having a medium diameter is formed in a substantially central region thereof (for example, a region on the vertical axis of the article mounting table 1). A small-diameter fixing cylindrical portion 1c is provided in the central region of the insertion groove 1b. In addition, a female screw portion 1d for screwing a fixing small screw 4 as a fixing means to be described later is formed in the central region of the fixing cylindrical portion 1c.

Reference numeral 2 is a leg insertion hole formed at each of three angular positions so as to partially communicate with the ring-shaped insertion groove 1b of the article mounting table 1, and these are, for example, predetermined holes. It is formed so as to be parallel to the vertical axis of the article mounting table 1 on a pitch circle having a diameter. These three leg insertion holes 2 have an inner diameter into which the root portions of three legs 3, 3 ', 3 "described later can be respectively inserted, and the depth of each leg insertion hole is The three legs 3, 3 ′ and 3 ″ are held at predetermined positions with sufficient holding performance, for example, a predetermined amount from the depth of the ring-shaped insertion groove 1 b of the article mounting table 1. The depth is set so that it only fits deeply.

By the way, the leg portion including the first leg portion 3, the second leg portion 3 ′, and the third leg portion 3 ″ has, for example, a root portion having the largest diameter and an intermediate portion having the second largest diameter. It is configured as a pipe-shaped three-stage telescopic leg with a part and the thinnest tip part (stone projection part), and when shortening, the middle part is stored inside the root part, and the tip part is inside this middle part. It is configured as a telescopic leg having a structure known per se for storing the.

Further, the leg portions 3, 3 ′, 3 ″ are formed so as to be flexible enough to be flexed by a human fingertip force, and the outer surfaces thereof are made of an appropriate material and have an appropriate thickness. Each of them is formed as a member covered with a soft plastic layer.4 is a fixing means for detachably fixing the bottom plate portion 11 of the elastic fixing member 10 described later to the fixing column portion 1c of the article mounting table 1. A fixing small screw 10 is an elastic fixing member for simultaneously fixing the three legs 3, 3 ′ and 3 ″ to the lower surface of the article mounting table 1.

The elastic fixing member 10 is formed of a plate-shaped material having a predetermined elastic force and having an appropriate thickness, and as shown in FIG. 3, the elastic fixing member 10 comes into surface contact with the fixing cylindrical portion 1 c of the article mounting table 1. In addition, for example, a triangular bottom plate 11 is fixed by fixing small screws 4, and one end of each is connected to the outer edge portion of the bottom plate 11 at three equal angular positions in a bent manner (integrated connection). ) A first elastically deforming portion 12, a second elastically deforming portion 12 ′, and a third elastically deforming portion 12 ″, and a screw hole 13 formed in the central region of the bottom plate portion 11. It is configured as a member having a different structure.

In this case, the diameter of the outer edge portion of the bottom plate portion 11 is such that when the base portions of the three leg portions 3, 3 ′ and 3 ″ are fitted in the leg fitting holes 2, respectively. The dimension (diameter) is set so that the outer edge portion of the portion 11 does not come into contact with the outer surfaces located inside the three legs 3, 3 ′, 3 ″.

On the other hand, the three elastically deforming portions 12, 12 ′ and 12 ″ are elastically deforming portions having a generally rectangular shape in which the other end of each elastically deforming portion is formed as a free end. In the state in which the elastic fixing member 10 is attached to the fixing cylindrical portion 1c of the article mounting table 1, the elastically deforming portions 12, 12 ', 12 "at these three positions are formed at their respective free ends. It is configured as a shape that can be inserted into the ring-shaped insertion groove 1b of the article mounting table 1 from the side.

In addition, each of the first elastic deformation portion 12 to the third elastic deformation portion 12 ″ has one protruding fixing portion (12a, 12b), (12) protruding in the respective short side directions (both side directions). ′ A, 12′b), (only the third elastically deformable portion is not designated) are formed, and these six projecting fixing portions 12a, 12b, ... Include three leg portions 3, 3 ′, Each of the root portions of the 3 ″ is configured as a protruding fixing portion having a function of fixing inside the corresponding leg insertion hole 2 of the article mounting table 1.

Hereinafter, the functions of the six protrusion fixing portions are as follows: one protrusion fixing portion (12a, 12b) formed on the first elastic deformation portion 12 and one protrusion fixing portion 12 'on the second elastic deformation portion 12'. The protrusion fixing portions (12'a, 12'b) will be described as a typical example. Now, with the root portions of the three legs 3, 3 ′ and 3 ″ fitted in the corresponding leg fitting holes 2, the elastically deformable portions 12 to 12 ″ of the elastic fixing member 10 at three locations. Are inserted into the ring-shaped insertion groove 1b of the article mounting table 1 from the side of each free end while being attached to the outer surfaces of the root portions of the corresponding leg portions 3, 3 ', 3 ".

At this time, the right side protruding fixing portion 12b of the first elastic deformation portion 12 and the left side protruding fixing portion 12'a of the second elastic deformation portion 12 'are attached to the first leg portion 3 in the fitted state. The outer surface of the root portion is inserted into the ring-shaped insertion groove 1b such that it is sandwiched from the left and right sides.

After that, when the bottom plate portion 11 of the elastic fixing member 10 is brought into surface contact with the fixing columnar portion 1c of the article mounting table 1 and fixed by the fixing small screw 4, in the process, the first elastic deformation portion 12 is formed. And the second elastically deformable portion 12 'are respectively bent inward by a predetermined amount, and both elastically deformable portions 12 and 12' are pressed against the outer surface of the root portion of the first leg portion 3 from the left and right respectively. , The outer surface of the root portion of the first leg portion 3 is tightened.

Therefore, the pressure contact force (tightening force) of the two protruding fixing portions 12b and 12'a at this time is set to a value at which the first leg portion 3 does not easily fall out from the leg portion fitting hole 2. In this case, the first leg portion 3 is fixed to the article mounting table 1 in a state that the first leg portion 3 does not easily slip out from the leg portion fitting hole 2 that has been fitted. At this time, since the outer surface of the first leg portion 3 is covered with the soft plastic layer, the two protruding fixing portions 12b and 12'a bite into the soft plastic layer to sufficiently prevent the first leg portion 3 from falling off. Will be stopped.

The action of preventing the dropout to the leg portion by such a pressure contact force is one of the protruding fixing portions 12'b on the right side and the third elastic deforming portion 12 "of the adjacent second elastic deformation portions 12 '. Part (no reference numeral), and also works between the other protrusion fixing portion (no reference numeral) of the third elastic deformation portion 12 ″ and the left side protruding fixing portion 12a of the first elastic deformation portion 12. Therefore, the remaining two leg portions 3'and 3 "are also fixed to the corresponding leg insertion holes 2 by the action of preventing the leg portions from coming off, without easily slipping off.

Therefore, in the first embodiment, the interval between the elastically deforming portions 12 to 12 ″ is set to a dimension such that the three adjacent pairs of protruding fixing portions can achieve the leg drop-out preventing function. In addition, the pressure contact that allows the opening angle of the first elastically deforming portion 12 to the third elastically deforming portion 12 ″ toward the outer side in the free state to achieve the leg slip-out preventing action by the three pairs of protruding fixing portions. Each is set to a value that produces power.

As described above, in the first embodiment, when the bottom plate portion 11 of the elastic fixing member 10 is attached to the fixing cylindrical portion 1c of the article mounting table 1, the elastic deformation portions 12 to 12 ″ are generated at three places. Due to the pressure contact force, the three legs 3 to 3 ″ can be fixed to the article mounting table 1 simultaneously and easily without falling out.

Next, a second embodiment of the present invention will be described. FIG. 4 is a plan view of the leg mounting structure of the second embodiment when the present invention is applied to a parallel leg fixed type small tripod, as seen from below, and FIG. 5 is a BB line in FIG. A sectional view taken along a line arrow is shown. In FIGS. 4 and 5, reference numeral 21 denotes an article placing table corresponding to the article placing table 1 of the first embodiment, and the center area of the lower surface 21a thereof has a center as a circular recess having a predetermined diameter and depth. A concave portion 21b is formed, and a female screw portion 21c into which a deformation fixing small screw 25 as a fixing means to be described later is screwed is provided in a central region of the central concave portion 21b.

Reference numeral 22 denotes three leg insertion holes corresponding to the leg insertion holes 2 of the first embodiment, and at three angular positions of the inner peripheral wall of the central recess 21 b of the article mounting table 21, It is formed so as to be parallel to the vertical axis of the article mounting table 21 on a pitch circle having a predetermined straight diameter. The depths of the three leg insertion holes 22 are such that the root portions of the three leg portions 23, which will be described later after being inserted into the respective leg insertion holes 22, can be held at their respective predetermined positions with sufficient holding performance. The depth is set so that it can be inserted, for example, a depth deeper than the depth of the central recess 21b of the article mounting table 21 by a certain amount.

Reference numeral 23 denotes three leg portions corresponding to the first leg portion 3 to the third leg portion 3 ″ of the first embodiment, and the respective root portions are fitted into the leg fitting holes 22 at three places. Reference numeral 24 denotes a bulging deformable fixing member for simultaneously fixing the three leg portions 23 fitted in the leg fitting holes 22.

When the bulging deformable fixing member 24 is placed on the bottom surface of the central concave portion 21b, when a compressive force acting in the direction of the vertical axis of the article placing table 21 is applied (hereinafter, "When placed on compression"), an elastic deformation material such as synthetic rubber or soft plastic was used so that it could bulge and deform in the cylinder axis or in a direction (transverse direction) substantially orthogonal to the cylinder axis. It is formed as a columnar or cylindrical elastic member.

In the second embodiment, the bulging deformable fixing member 24 has three legs by utilizing the lateral bulging deforming action of the bulging deformable fixing member 24 during compression mounting. The root portions of the parts 23 are pressed (pressed) at the same time, and the three pressing parts 23 are used to fix the three legs 23 to the article table 21.

Therefore, the outer diameter of the bulging deformable fixing member 24 is such that the outer peripheral surface thereof is fitted in the leg fitting hole 22 when the bulging deformable fixing member 24 is in the free state. Be careful not to contact the outer surfaces of the three legs 23, but during compression placement, the outer peripheral surface deformed laterally by the compressive force acting in the direction of the vertical axis that acts on itself is the prescribed pressure contact force (tightening force). Is set to such a value that the outer surfaces of the three leg portions 23 in the fitted state can be brought into contact with each other.

Further, the height of the bulging deformable fixing member 24 including the amount of protrusion from the lower surface 21 a of the article mounting table 21 is also within each leg fitting hole 22 corresponding to the root portion of the three leg portions 23. The height is set so that the three legs 23 can be positioned in a state in which the legs are fixed (when the legs are closed). In addition, in the central region of the bulging deformable fixing member 24, there is provided a small screw insertion hole 24a for allowing a deformation fixing small screw 25 as a fixing means to be described later to pass therethrough. The inner diameter of 24a is set to a value smaller than or substantially equal to the outer diameter of the deformation fixing machine screw 25.

Numeral 25 is a deformation fixing small screw which penetrates through the small screw insertion hole 24a of the bulging deformable fixing member 24 through an appropriate washer 26 and is screwed into the female screw portion 1c of the article placing table 21. is there. In the second embodiment configured in this way, the bulging deformable fixing member 24 is attached to the bottom surface of the central concave portion 21b of the article mounting table 21 by using the deformation fixing small screw 25 and the washer 26, and The female screw portion 21c of the mounting table 21 and its own screw tightening force cause lateral bulging deformation of the bulging deformable fixing member 24, and the bulging deforming force at this time causes the bulging deformable fixing member to bulge and deform. The outer peripheral surface of 24 is brought into pressure contact with the outer surface of each of the three leg portions 23, and the pressure contact force (tightening force) at this time causes the three leg portions 23 to be simultaneously inserted into the corresponding leg insertion holes 22. It is fixed so that it will not fall out easily.

In addition, in one modified example of the second embodiment, instead of the cylindrical bulging deformable fixing member 24, a tapered bulging deformable fixing member member having its outer peripheral surface tapered and It is also possible to use a bulging deformable fixing member (both not shown) having a spherical or spindle-shaped outer peripheral surface.

Hereinafter, the configuration and operation of the modified example using the tapered bulging deformable fixing member will be described as a typical example. In this modified example, the tapered bulging deformable fixing member is formed as a member having the same structure and material as the cylindrical bulging deformable fixing member 24 except for the outer peripheral surface, and the taper of the outer peripheral surface is the article mounting table. The taper is set such that its effective diameter becomes larger than the diameter on the bottom surface side as it moves away from the bottom surface of the central concave portion 21b of 21.

The tapered bulging deformable fixing member has the same structure and shape as the wedge action fixing member 31 shown in FIGS. 6 and 7, although the material is hard or soft. It becomes the shape. In the modified example of the second embodiment thus configured, the pressure contact force of the tapered bulging deformable fixing member to the three legs 23 is caused by the columnar bulging deformable fixing member 24. It produces an effect that it is generated more effectively than the pressure contact force.

Next, a third embodiment of the present invention will be described. FIG. 6 is a sectional view showing a leg mounting structure of a third embodiment when the present invention is applied to a parallel leg fixed type small tripod, and FIG. 7 is a wedge action fixing member used in the third embodiment. 3 is a perspective external view showing the structure of FIG.

This third embodiment uses a wedge action fixing member 31 made of a hard material instead of the bulging deformable fixing member 24 of the second embodiment shown in FIGS. This is an example in which the three leg portions are fixed to the article mounting table by utilizing the wedge action due to the displacement of the wedge action fixing member 31 of the mounting table 21 in the vertical axis direction.

Therefore, structurally, the article mounting table 21, the lower surface 21a thereof, the central concave portion 21b, the female screw portion 21c, the three leg portion fitting holes 22, and the three leg portions 23 are all second The configuration is similar to that of the embodiment. The fixing small screw 25 'used in the third embodiment is not used for deformation fixing, but has the same structure as the deformation fixing small screw 25 in the second embodiment. It is configured.

Now, the wedge action fixing member 31 used in the third embodiment is formed of a hard material such as a metal material or a hard plastic material, and is the same as that of the second embodiment shown in FIGS. 4 and 5. Similar to the columnar bulging deformable fixing member 24, the bulging deformable fixing member 24 is formed as a truncated cone-shaped member having a predetermined taper on its outer peripheral surface.

In this case, the taper of the outer peripheral surface is set such that its effective diameter becomes larger than the diameter on the bottom surface side as it moves away from the bottom surface of the central recess 21b of the article mounting table 21, and A small screw insertion hole 31a for inserting the fixing small screw 25 'is formed in the central region of the wedge action fixing member 31. In the third embodiment, the wedge action fixing member 31 is attached to the article placing table 21 in a state where the root portions of the three legs 23 are fitted into the three leg engaging holes 22 of the article placing table 21. It is placed on the central concave portion 21b, and the wedge action fixing member 31 is attached by the fixing small screw 25 '.

At this time, in the process of attaching the wedge action fixing member 31 to the article placing table, the wedge action due to the taper of the wedge action fixing member 31 causes the outer peripheral surface of the wedge action fixing member 31 to move to the three legs 23. The base portions are strongly contacted, and the contact pressure at this time simultaneously presses the base portions of the three legs 23 against the inner wall surfaces located outside the corresponding leg fitting holes 22.

Then, by this pressing force, the three leg portions 23 are simultaneously and easily fixed to the article mounting table 21 in a state where they do not fall out. Therefore, in the third embodiment, the taper formed on the outer peripheral surface of the wedge action fixing member 31 is set to have an inclination angle sufficient to generate such a pressing force. In the third embodiment, since the wedge action fixing member 31 is made of a hard material, the washer 26 can be omitted.

FIG. 8 shows one modification of the second embodiment utilizing the wedge action. In this modified example, an elastic cylindrical shape such as the cylindrical bulge deformable fixing member 24 or the tapered bulge deformable fixing member (not shown) used in the second embodiment is used. Is a bulging wedge action fixing member 31 'in which a dish-shaped seat 31'b is formed in advance on a bulging deformable fixing member having a taper, and a bulging wedge action dish-shaped machine screw 32 having a dish head. Becomes

The small screw insertion hole 31'a formed in the central region of the bulging wedge action fixing member 31 'is formed similarly to the small screw insertion hole 24a of the second embodiment described above, and Other configurations used in this modification are similar to the basic configuration of the second embodiment. In this case, the dish-shaped seat 31'b formed on the bulging wedge-action fixing member 31 'has a maximum diameter smaller than the maximum diameter of the dish-shaped head of the bulging wedge-action dish-shaped machine screw 32, for example, and On the other hand, it is formed as a dish seat whose depth is set deeper than the axial thickness of this dish head.

In this modification, the swelling wedge action fixing member 31 ′ is attached to the article mounting table 2 with the root portions of the three leg portions 23 fitted in the corresponding leg fitting holes 22. In the process of mounting on the bottom surface of the central concave portion 21b of No. 1 and mounting with the bulging wedge action dish-shaped machine screw 32, the dish action of the bulging wedge action dish-shaped machine screw 32 causes the dish-shaped head to move to the dish-shaped seat. It is configured such that the plate 31'b is pushed outward and is bitten into the dish-shaped seat 31'b.

At this time, the swelling action and the biting action cause an outward swelling action in a partial region of the swelling wedge action fixing member 31 ′, and a partial region of the swollen outer peripheral surface has three legs. A wedge action of pressing the root portion of the portion 23 from the inside occurs. Therefore, due to the wedge action at this time, the root portions of the three leg portions 23 are pressed against the inner peripheral surfaces located outside the corresponding leg insertion holes 22, and the pressing force causes the three leg portions 23 to be pressed. At the same time, the root part of the is fixed to the article mounting table 21 in a state where it cannot easily slip off.

Therefore, in this modification, the shape, size, thickness, etc. of the dish-shaped head of the bulging wedge action dish-shaped machine screw 32 are set so as to achieve such an object. The degree of elastic deformation of the protruding wedge action fixing member 31 'as an elastic member and the diameter and depth of the dish-shaped seat 31'b are set.

Furthermore, when the outer peripheral surface of the bulging wedge action fixing member 31 ′ is formed as a tapered surface having a predetermined inclination angle, the dish head of the bulging wedge action dish-shaped machine screw 32 is urged by the pressure contact force due to the taper. Since the pressure contact force due to is added, a further wedge action works. In addition, a wedge action fixing member having a structure in which convex portions (not shown) of appropriate shapes are formed in the limited appropriate regions of the outer peripheral surface of the wedge action fixing member 31 and the outer peripheral surface of the bulging wedge action fixing member 31 '. It is also possible to construct it and use it instead of the wedge action fixing member 31 or the bulging wedge action fixing member 31 '.

Finally, the leg mounting structures adopted in the first embodiment, the second embodiment, the modification of the second embodiment, and the third embodiment are all parallel leg fixed small tripods. In addition to the above, it can be applied to small fixed tripod type tripods.

In this case, the shapes of the three elastically deformable portions 12 to 12 ″ of the elastic fixing member 10, the shapes of the bulging deformable fixing member 24 and the tapered bulging deformable fixing member, the wedge action fixing member 31 and The shape of the bulging wedge action fixing member 31 'is designed to be changed from the illustrated shape to a shape adapted (corresponding) to the opening angle of each of the three legs.

Although the present invention has been described above based on a plurality of illustrated embodiments, the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the invention. For example, in the illustrated embodiment, the telescopic legs are used for the three legs, but the leg is not limited to the telescopic legs and may be a fixed-length leg. It is also possible to use rod-shaped members instead of rectangular members, and use appropriate materials such as flexible metal materials and hard plastic materials as well as highly rigid metal materials for the legs. You can

[0055]

[Effect of device]

 As described above, according to the present invention, in the case of the parallel leg fixed type small tripod and the open leg fixed type small tripod, three devices are provided around the central region of the article mounting table. A leg fitting hole into which the base of the leg is fitted is provided, and the leg is configured to be screwed along the vertical axis of the article mounting table into the central area of the article mounting table located in the area inside these leg fitting holes. A small screw for fixing the portion is provided, and by the screwing action of the small screw for fixing the leg portion, the elastic fixing member, the bulging deformable fixing member, the tapered bulging deformable fixing member, the wedge action fixing member, the bulging wedge An elastic deformation action, a swelling action, or a wedge action is caused in the leg fixing member composed of the action fixing member, and the compression force (pressure contact force) to the three legs caused by any of the actions at this time. ) Allows each leg to be easily and simultaneously Since it is configured to be fixed to the mounting table, when using the present invention, compared to the conventional method of fixing with an adhesive, even when the thickness of the legs has "variation" This has the excellent effect of making it possible to prevent the legs from coming off the article mounting table and to realize a leg mounting structure of a small tripod capable of suppressing the variation in the pull-out strength.

In this case, the leg mounting structure can be configured to be structurally simple and robust, and the work during assembly can be performed extremely easily. The effect will be exhibited more practically and more effectively.

[Brief description of drawings]

FIG. 1 is a plan view of a leg mounting structure of a first embodiment when the present invention is applied to a parallel leg fixed type small tripod, as viewed from below.

FIG. 2 is a sectional view taken along line AA in FIG.

3 is a perspective view showing a configuration of an elastic fixing member used in the leg attaching structure of FIG. 1. FIG.

FIG. 4 is a plan view of the leg mounting structure of the second embodiment when the present invention is applied to a parallel leg fixed type small tripod, as viewed from below.

5 is a sectional view taken along line BB in FIG.

FIG. 6 is a cross-sectional view showing a leg attaching structure of a third embodiment when the present invention is applied to a parallel leg fixed type small tripod,
FIG. 6 is a diagram corresponding to FIGS. 2 and 5.

FIG. 7 is a perspective view showing the structure of a wedge action fixing member used in the third embodiment of FIG.

FIG. 8 is a cross-sectional view showing the configuration of a modification of the second embodiment.

FIG. 9 is a perspective view showing a configuration of a leg mounting structure of a conventional small tripod having a predetermined opening angle between three legs when viewed from diagonally above.

10 is a perspective view showing a configuration of the leg part mounting structure of the small tripod of FIG. 9 when inverted and seen from diagonally above.

FIG. 11 is a bottom perspective external view showing the configuration of a leg mounting structure of a conventional small tripod in which three legs are fixed so as to be parallel to each other, as viewed from diagonally below.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Item mounting table 1a Lower surface 1b Medium diameter ring-shaped insertion groove 1c Small diameter fixing cylindrical portion 1d Female threaded portion 2 Leg fitting hole 3, 3 ', 3 "1st leg, 2nd leg, 3rd Leg 4 Small fixing screw 10 Elastic fixing member 11 Bottom plate 12, 12 ', 12 "First elastic deformation part, second elastic deformation part, third elastic deformation part 12a, 12b Projection fixation of the first elastic deformation part 12 Part 12'a, 12'b Projection fixing part of the second elastic deformation part 12 '13 Screw hole 21 Article placement table 21a Lower surface 21b Center recess 21c Female screw part 22 Leg part insertion hole 23 Leg part 24 Bulging deformable fixing member 24a Small screw insertion hole 25 Deformation fixing small screw 26 Washer 31 Wedge action fixing member 31a Small screw insertion hole 31 'Bulging wedge action fixing member 31'b Dish seat 32 Dwelling action dish type small screw

Claims (3)

[Scope of utility model registration request] 1. A compact body comprising an article placing table for detachably holding an object to be held, and three leg portions whose roots are fitted and fixed to a lower surface of the article placing table in a predetermined arrangement. In the leg mounting structure of a tripod, the three legs formed from a rod-shaped or pipe-shaped member whose outer surface is coated with a soft plastic layer and three equal parts along the outer periphery of the central region of a predetermined shape. Three leg fitting holes, which are arranged at angular intervals and into which the root parts of the three leg parts can be fitted, and a ring shape provided so as to communicate with a part of the inside of the three leg fitting holes And a bottom plate portion that is in surface contact with the central region of the article mounting table, one end of which is connected to the outer peripheral portion of the bottom plate portion and the other end of which is the other end portion. Three substantially strip-shaped elastically deformable parts formed as free ends, and An elastic fixing member composed of one protruding fixing portion formed on each side of each elastically deforming portion in the short side direction, and a bottom plate portion of the elastic fixing member is attached to the article mounting table. Fixing means for inserting the three elastically deformable portions of the elastic fixing member into the insertion grooves of the article placing table, and for fixing the bottom plate portion of the elastic fixing member to the central region of the article placing table by the fixing means. When attached, each one of the protrusion fixing portions of the elastically deforming portions adjacent to each other is elastically deformed inward, and each one leg portion positioned between each one of the protrusion fixing portions. A leg part mounting structure for a small tripod, characterized in that the three leg parts are respectively fixed to the article mounting table by sandwiching the outer surface of each root part of the. 2. A small size comprising an article mounting table for removably holding an object to be held, and three leg portions whose roots are fitted and fixed to the lower surface of the article mounting table in a predetermined arrangement. In the leg mounting structure of a tripod, the three legs formed from a rod-shaped or pipe-shaped member whose outer surface is coated with a soft plastic layer and three equal parts along the outer periphery of the central region of a predetermined shape. Three leg fitting holes that are arranged at angular intervals and into which the root portions of the three leg parts can be fitted, and circular recesses that are provided so as to communicate with a part of the inside of these three leg fitting holes And a cylindrical elastic member having a right cylindrical shape or a taper, when a compressive force acting in the direction of the cylindrical axis is applied,
A bulging deformable fixing member capable of bulging and deforming in a direction substantially orthogonal to the cylindrical axis, and a fixing means for mounting the bulging deformable fixing member toward the bottom surface of the circular recess of the article mounting table, The bulging deformability is fixed by utilizing the bulging deformation action of the bulging deformable fixing member that occurs when the bulging deformable fixing member is attached to the bottom surface of the circular recess of the article mounting table by the fixing means. Small size characterized in that the outer peripheral surface of the fixing member is brought into pressure contact with the roots of the three legs, and the three legs are fixed to the article mounting table by the pressure contact force at this time. A tripod leg mounting structure. 3. A compact body comprising an article placing table for detachably holding an object to be held, and three leg portions whose roots are fitted and fixed to a lower surface of the article placing table in a predetermined arrangement. In the leg mounting structure of a tripod, the three legs formed from a rod-shaped or pipe-shaped member whose outer surface is coated with a soft plastic layer and three equal parts along the outer periphery of the central region of a predetermined shape. Three leg fitting holes that are arranged at angular intervals and into which the root portions of the three leg parts can be fitted, and circular recesses that are provided so as to communicate with a part of the inside of these three leg fitting holes And a wedge action fixing member formed as a columnar member or a cylindrical member made of a hard material and having a predetermined taper on the outer peripheral surface, and the wedge action fixing member is a cylinder. Can be displaced in the direction of the axis or cylinder axis Fixing means for attaching the wedge action fixing member toward the bottom surface of the circular concave portion of the article mounting table in a state, and the wedge action occurs in the process of attaching the wedge action fixing member toward the bottom surface of the circular concave portion of the article placing table by the fixing means. Utilizing the wedge action due to the taper of the fixing member, the outer peripheral surface of the wedge action fixing member is brought into pressure contact with the respective inner portions of the root portions of the three legs, and the pressure contact force at this time causes the three legs to come into contact. A leg mounting structure for a small tripod, characterized in that the part is fixed to the article mounting table.