JP5529243B2 - Fastener - Google Patents

Description

  The present invention relates to a fastener provided with a female screw that is coupled to a male screw when fixing a device.

  Traditionally, viewing and photographing various objects such as viewing and photographing astronomical objects and terrain using optical devices with a predetermined magnification, such as astronomical telescopes, large binoculars, or single lens reflex cameras. Has been done.

  Optical devices such as telescopes, binoculars, or single-lens reflex cameras are often used by being fixed to a tripod head or the like and coupled to a tripod screw. For this reason, the optical device itself or a device coupling base is formed with a 1/4 inch female screw that conforms to a predetermined standard, which is a tripod screw hole, or a 3/8 inch female screw if it is a large apparatus. . The tripod head is mounted with a 1/4 inch male screw that is usually a camera mounting screw, or a 1/4 inch male screw that conforms to the standard, or a 3/8 inch male screw for a large tripod. Yes. The male screw is screwed into and tightened with the female screw of the optical device or the female screw of the frame for coupling the device, so that the optical device can be fixed to the pan head.

  However, since there are multiple screw sizes, depending on the size of the optical device and tripod you own, it cannot be connected due to the difference in size, and it can be connected via a screw conversion adapter to reduce the diameter or increase the diameter of the tripod screw. There was a case of letting.

  In many cases, the male thread defined by these standards usually has a thread length and the like defined together with the diameter size.

  Further, Patent Document 1 shown below discloses a fastener that does not require a small diameter machining of a shaft portion of a bolt (screw) and does not require a large space between both members.

JP 2008-256058 A

  However, the fastener and the screw conversion adapter of Patent Document 1 described above have a function of converting the screw shaft portion by reducing the diameter or increasing the diameter of the screw, but once coupled, they cannot be easily removed. In an apparatus that requires removal of the fastener every time each apparatus is stored, it cannot be said to be an optimal fastener.

  An object of the present invention is to provide a fastener having a multiple female screw structure in which male screws of different sizes can be used and a female screw provided in a device and other devices and members can be easily coupled with the male screw.

The fastener of the present invention is a multiple female screw fastener incorporated into a part of the device for fixing the device, and a main body having an attachment portion for fixing to the device and a main female screw portion are formed , A holder fixed to the device by the main body in a state of being fixed to the main body, and a complementary female screw portion having a smaller screw diameter than the main female screw portion are housed in the main body so as to be disposed in the main female screw portion of the holder. A slide holder that is slidable in the axial direction of the main female threaded portion, an elastic body that is housed in the main body and biases the slide holder forward, and is fixed to the main body and comprising a holder restricting portion for preventing rotation of said slide holder about the axial direction, and to the main internal thread part, when the male thread is screwed, it is inserted into the main internal thread part By the male thread, the slide holder is characterized in that the retracted against the elastic force of the elastic body.

Preferably, the attachment portion is characterized in that a male screw is formed around and the main body can be screwed and fixed to the device. Preferably, the main body has a cylindrical shape and is provided with a knurl on the outer peripheral surface. Preferably, the main body has the holder at the center of the front surface and the holder restricting portion at the center of the rear surface, and the slide holder and the elastic body are interposed between the holder and the holder restricting portion. Each of them is housed in the main body with its center axis line aligned. Preferably, the front surface of the holder is flush with the front surface of the main body. Preferably, the front end opening surface of the main female screw portion and the front end opening surface of the complementary female screw portion are located on the same plane, and the slide holder is retracted by screwing of the male screw.

  Preferably, a second complementary female screw portion having a smaller diameter than the complementary female screw portion is incorporated in the slide holder so as to be disposed in the complementary female screw portion, and is slidable in the axial direction of the main female screw portion. A second slide holder and a second elastic body that biases the second slide holder forward may be provided.

  Preferably, the male screw is a screw attached to a fixed base such as a tripod.

  Preferably, the device is an optical device such as a telescope, binoculars, or a camera.

ADVANTAGE OF THE INVENTION According to this invention, the fastener of the multiple internal thread structure which can use the external thread of a different size and can couple | bond the internal thread provided in the apparatus with another apparatus and member easily with an external thread can be provided. And since the holder is incorporated in the main body of the fastener and the fastener is incorporated in the apparatus or device via the screw-type attachment part, the holder or elastic body is incorporated directly into the base of the apparatus or device. Assembly of a fastener having a multiple female screw structure is facilitated.

  Further, the fastener of the present invention is standardized with the same length with different diameter sizes because the front end opening surface of the main female screw portion and the front end opening surface of the complementary female screw portion are located in the same plane. It is easy and reliable to be screwed with the male screw, and by adjusting the strength of the elastic body, the screw can be easily positioned when the male screw is screwed into the main female screw portion.

  Furthermore, in the fastener of the present invention, the elastic body is incorporated in the holder and biases the slide holder, so that the female screw does not escape into the holder when the small diameter screw is stopped, Screwing can be executed reliably.

  And the fastener of this invention is not limited to two types as a male screw of a different size, By making it possible to use even three or more types, the applicable range can be expanded so that it can respond from a large apparatus to a small apparatus.

  Further, the fastener of the present invention uses a 1/4 inch male screw or a 3/8 inch male screw, which is a standard size such as a tripod screw, when placing a frame such as an optical device on a tripod head or the like. be able to.

  Furthermore, the fastener of the present invention can be applied to a variety of tripods and pan heads from small to large when combining optical devices such as telescopes, binoculars, and cameras with tripods or pan heads.

It is explanatory drawing regarding the coupling | bonding of the telescope and the tripod by the fastener which concerns on embodiment of this invention. It is the external appearance perspective view seen from the mount attachment side, such as an optical instrument, of the fastener concerning the embodiment of the present invention. It is the external appearance perspective view seen from the tripod attachment side of the fastener which concerns on embodiment of this invention. It is a disassembled perspective view of the multiple internal thread structure of the fastener which concerns on embodiment of this invention. It is sectional drawing when attaching the 1/4 inch male screw of a tripod to the fastener which concerns on embodiment of this invention. It is sectional drawing when the 1/4 inch male screw of a tripod is attached to the fastener which concerns on embodiment of this invention. It is sectional drawing when attaching the 3/8 inch male screw of a tripod to the fastener which concerns on embodiment of this invention. It is sectional drawing when attaching the 3/8 inch male screw of a tripod to the fastener which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram relating to the coupling of a telescope as a device and a tripod as another device by the fastener according to the embodiment. FIG. 2 is an external perspective view of the fastener 10 according to the embodiment of the present invention as viewed from the side where the optical device 200 is attached to the mount 201. FIG. FIG. 3 is an external perspective view of the fastener 10 according to the embodiment of the present invention as viewed from the attachment side with the tripod 100. FIG. 4 is an exploded perspective view of the multiple female screw structure 50 of the fastener 10 according to the embodiment of the present invention. In addition, the fastener 10 makes the holder 20 side shown in FIG. 4 the front, and makes the holder control member 40 side the back.

  For example, as shown in FIG. 1, the fastener 10 can be applied as a fastener 10 that couples a male screw that is a tripod screw 101 of a tripod 100 and a mount 201 of an optical device 200 such as an astronomical telescope.

  The male screw, which is the tripod screw 101, has a diameter size, a length, and the like that are defined in a certain standard, and there are some that are incorporated into the pan head 102 so that they will not be lost from the pan head 102. .

  As shown in FIGS. 2 and 3, the fastener 10 has a main body 15 having a substantially cylindrical shape made of metal, and is disposed so as to be inserted through the main body 15 at a circular central portion. Is provided with a multiple female screw structure 50 that can be used by attaching the.

  As shown in FIG. 2, the fastener 10 is connected to the gantry 201 having a clamp mechanism while allowing the astronomical telescope barrel to be moved up and down or horizontally on the side of the astronomical telescope gantry 201 attached. As a part, for example, a screw-type attachment part 18 having a diameter of 40 mm is formed.

  Further, the fastener 10 has a groove recess 43 formed on the surface of the holder restricting member 40 in order to couple the holder restricting member 40 which is a part of the multiple female screw structure 50 to the main body 15 by screwing.

  As shown in FIG. 4, the multiple female screw structure 50 includes a holder 20, a slide holder 30, an elastic body 35, and a holder regulating member 40 so as to be inserted through the central portion of the main body 15.

  The holder 20 has a metal hollow cylindrical shape, and a 3/8 inch male screw having a maximum diameter as a tripod screw 101 can be attached to a hollow inner wall which is a screw hole 22 as shown in FIGS. The main female thread portion 21 is provided.

  3 and 4, the holder 20 has a crook recess 23 formed in the exterior portion, and a thread groove is formed in the outer peripheral edge of the cylinder. It can be coupled to a holder mounting portion 16 formed on the inner wall of the central hole.

  The slide holder 30 is made of metal and has a stilt shape having a function of preventing rotation while being movable within a predetermined range in the thrust direction, and the slide holder front end is disposed inside the screw hole 22 of the holder 20. Yes. The slide holder 30 is formed with a complementary female thread portion 31 on the inner wall of the front end, an oval flat plate portion 32 at the central portion, and a shaft portion 33 at the rear end.

  The front end opening surface of the main female screw portion 21 and the front end opening surface of the complementary female screw portion 31 are located on the same plane, and the slide holder 30 is elasticized by the insertion of the male screw corresponding to the main female screw portion 21. Retreats against the elastic force of.

  The complementary female screw portion 31 is a female screw that is formed inside a hollow cylindrical shape and has a diameter smaller than that of the main female screw portion 21 and a 1/4 inch male screw can be attached as a tripod screw 101.

  The oval flat plate portion 32 of the slide holder 30 is configured to be slidable in the axial thrust direction, and engages with the anti-rotation engaging portion 41 of the holder regulating member 40 when the slide operation is performed. Thus, it has a function of stopping rotation.

  In addition, when the slide holder 30 is operated in the thrust direction, the oval flat plate portion 32 is regulated to the outward direction of the screw by the rear end portion of the holder 20, and the inward operation of the screw is regulated by the holder regulating member 40. It has a function to be done.

  The shaft portion 33 of the slide holder 30 has a cylindrical shape made of metal, and operates so as to pass through the hole 42 of the holder regulating member 40 when the slide holder 30 operates in the thrust direction. .

  The elastic body 35 is a metal spring material arranged so as to be wound around the shaft portion 33 of the slide holder 30, one of which is supported on the inner surface of the oval flat plate portion 32 and the other is supported on the inner surface of the holder regulating member 40. Thus, the slide holder 30 is urged outward of the screw hole of the complementary female screw portion 31, that is, forward.

  The holder restricting member 40 is made of metal and forms a male screw as the main body mounting portion 44 on the periphery of the cylindrical portion for coupling with the main body 15, and regulates the operating direction of the slide holder 30 in the thrust direction. However, the slide holder 30 is regulated so as not to rotate. Further, the holder restricting member 40 is a rotation stop engaging portion formed by arranging two arc-shaped column bodies so as to protrude inward from the cylindrical portion at a target position with respect to the center of the holder restricting member 40. 41.

  In addition, the holder regulating member 40 is provided with a hole 42 in the center of the cylindrical portion so as to penetrate the shaft portion 33 of the slide holder 30.

  Next, a structure in which a tripod 100 of a tripod screw 101 having a different size such as a 1/4 inch male screw or a 3/8 inch male screw is coupled to the fastener 10 will be described with reference to cross-sectional views.

  When the male screw is not attached to the fastener 10, the front end of the slide holder 30 is biased by the elastic body 35 to the vicinity of the opening of the screw hole 22 of the holder 20 as shown in FIG. That is, in the vicinity of the screw hole 22 opening of the holder 20, the main female screw portion 21 having the maximum diameter of the inner wall of the holder 20 screw hole 22 and the slide holder having a smaller diameter than the main female screw portion 21 inside the main female screw portion 21 of the holder 20 Thirty complementary female thread portions 31 are arranged respectively.

  Then, as shown in FIG. 5, a 1/4 inch male screw tripod screw 101 installed on the pan head 102 of the tripod 100 is inserted in the vicinity of the opening of the screw hole 22 of the fastener 10, and the tripod screw 101 is inserted. Is rotated to couple the tripod screw 101 and the fastener 10 together.

  As shown in FIG. 6, the fastener 10 is screwed onto the complementary female thread portion 31 of the slide holder 30, which is a ¼ inch female thread disposed near the opening of the screw hole 22 of the holder 20, as shown in FIG. 6. . When the fastener 10 is screwed on the tripod screw 101, the slide holder 30 is biased by the internal elastic body 35 in the vicinity of the opening of the screw hole 22 and is not rotated by the internal rotation stop mechanism. The tripod screw 101 can be securely screwed onto the complementary female thread portion 31 of the slide holder 30.

  Further, as shown in FIG. 7, a tripod screw 101 of a 3/8 inch male screw installed on the pan head 102 of the tripod 100 is inserted in the vicinity of the opening of the screw hole 22 of the fastener 10, and the tripod screw 101 is inserted. It is also possible to couple the tripod screw 101 and the fastener 10 by rotating them.

  That is, the fastener 10 screws the tripod screw 101 of the 3/8 inch male screw into the main female screw portion 21 having the maximum diameter on the inner wall of the holder 20 screw hole 22. In the fastener 10, when the tripod screw 101 is screwed, the slide holder 30 is pushed into the tripod screw 101 and moved inward as shown in FIG. The tripod screw 101 can be screwed onto the main female screw portion 21 of the holder 20.

  In addition, although the case where it respond | corresponds to two types of external screws has been demonstrated as embodiment, it is not limited to this. For example, inside the slide holder 30, a second complementary female screw portion having a screw diameter smaller than that of the complementary female screw portion 31 is incorporated in the slide holder 30 so as to be disposed in the complementary female screw portion, and can slide in the axial direction of the main female screw portion 21. And a second elastic body that biases the second slide holder forward.

  Further, by providing a third slide holder, a fourth slide holder, and the like in the second slide holder, and using the fastener 10 that switches between three or more types of female screws, the use range can be expanded.

  Further, in the above embodiment, the front surface of the holder 20 and the front surface of the slide holder 30 are the same surface, but the front surface of the slide holder 30 may be slightly retracted from the front surface of the holder 20. In this case, it is possible to easily align the male screw to be screwed into the main female screw portion 21.

  As an embodiment, the fastener 10 has been described as the fastener 10 as an adapter that can couple the base 201 of the optical device 200 such as an astronomical telescope and the tripod 100. For example, some components of the optical device 200 It is also possible to use the multiple female screw fastener 10 incorporated as follows.

In this way, when the holder 20 is incorporated into the fastener body 15 and the fastener 10 is incorporated into the apparatus via the screw-type attachment portion 18, the holder 20 and the elastic body 35 are incorporated directly into the pedestal of the apparatus. As a result, the fastener 10 of the multiple female screw structure 50 can be easily assembled.

  As described above, according to the present embodiment, the fastener 10 of the multiple female screw structure 50 that can use male screws of different sizes and can easily connect the female screw provided in the device to other devices and members by the male screw. Can be provided.

  In the present embodiment, the fastener body 15, the holder 20, the slide holder 30, and the holder restricting member 40 are described as being made of metal. However, the material for forming the female screw or the like is appropriately made of ceramic, engineering plastic, or the like. You can also.

  Further, according to the present embodiment, the front end opening surface of the main female screw portion 21 and the front end opening surface of the complementary female screw portion 31 are located on the same plane, so that the multiple female screw structure 50 is not conspicuous. By adjusting the strength of the elastic body 35, the screwing can be easily aligned when the male screw is screwed into the main female screw portion 21.

  Further, according to the present embodiment, the elastic body 35 is incorporated in the holder and biases the slide holder 30, so that the female screw escapes into the holder when the small-diameter screw is tightened. And can be securely screwed.

  And according to this embodiment, it is not limited to two types as a male screw of a different size, By making it possible to use even three or more types, the applicable range can be expanded so that it can correspond from a large device to a small device.

  Furthermore, according to the present embodiment, when the mount 201 of the optical device 200 or the like is placed on the pan head 102 of the tripod 100, a 1/4 inch male screw or a 3/8 inch male screw tripod which is a standard size of the tripod screw 101 is used. The tripod 100 of the screw 101 can be used for each.

  The member for fixing the optical device is not limited to the pan head 102, but may be an equatorial or a base member such as a fixed base other than a tripod. Furthermore, the present invention is not limited to a member provided with a male screw for coupling, and other devices provided with a male screw for coupling may be coupled with a device such as an optical device provided with the fastener.

  Further, according to the present embodiment, when connecting the optical device 200 such as a telescope, binoculars, and a camera to the tripod 100 or the like, various tripods 100 from a small size to a large size can be used.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention and are also included in the invention described in the claims and the equivalent scope thereof.

DESCRIPTION OF SYMBOLS 10 Fastener 15 Main body 16 Holder mounting part 18 Screw-in attachment part 20 Holder 21 Main female screw part 22 Screw hole 23 Cradle recess 24 Main body mounting part 30 Slide holder 31 Complementary female screw part 32 Oval flat plate part 33 Shaft part 35 Elastic body DESCRIPTION OF SYMBOLS 40 Holder restricting member 41 Anti-rotation engaging part 42 Hole part 43 Groove recessed part 44 Main body mounting part 50 Multiple female screw structure 100 Tripod 101 Tripod screw 102 Pan head 200 Optical apparatus 201 Mounting base

Claims (9)

A fastener for multiple female screws incorporated into a part of the device to fix the device, a main body having an attachment portion for fixing to the device, and a main female screw portion are formed and fixed to the main body And a holder fixed to the device by the main body, and a complementary female screw portion having a smaller screw diameter than the main female screw portion is housed in the main body so as to be disposed in the main female screw portion of the holder. A slide holder that is slidable in the axial direction; an elastic body that is housed in the main body and biases the slide holder forward; and the axial center of the main female screw portion that is fixed to the main body comprising a holder restricting portion to prevent rotation of the slide holder, and to the main internal thread part, when the male screw is screwed to said male screw which is inserted into the main internal thread part , Fastener, characterized in that the slide holder is retracted against the elastic force of the elastic body. 2. The fastener according to claim 1, wherein the attachment portion is formed with a male screw around it so that the main body can be screwed and fixed to the device. The fastener according to claim 1 or 2, wherein the main body has a cylindrical shape and is provided with a knurl on an outer peripheral surface. The main body has the holder at the center of the front surface and the holder restricting portion at the center of the rear surface, and the slide holder and the elastic body are respectively arranged between the holder and the holder restricting portion with a central axis. The fastener according to any one of claims 1 to 3, wherein the fastener is accommodated in the main body. The fastener according to any one of claims 1 to 4, wherein a front surface of the holder is flush with a front surface of the main body. A front end opening surface of the main internal thread part, a front end opening surface of the complementary internal thread portion, but claims 1, characterized in that the slide holder is retracted positioned on the same plane by screwing the external thread The fastener according to any one of 5 . A second slide holder that is incorporated in the slide holder so that a second complementary female screw portion having a smaller screw diameter than the complementary female screw portion is disposed in the complementary female screw portion, and is slidable in the axial direction of the main female screw portion. And a second elastic body for urging the second slide holder forward. The fastener according to any one of claims 1 to 6 . The fastener according to any one of claims 1 to 7 , wherein the male screw is a screw attached to a fixed base such as a tripod. The fastener according to claim 8 , wherein the device is an optical device such as a telescope, binoculars, or a camera.

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