JP2009121614A - Universal joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a universal joint capable of surely joining a circular cross-sectional member and a member variously different in a shape, regardless of any of a relative angle of the both, by rotatably joining a vice and a clamp by a relay body. <P>SOLUTION: This universal joint is constituted of the vice 6 arranging the fixed jaw 2 on one side of a frame 1, arranging the movable jaw 4 advanced-retreated by a screw 3 on the other side and arranging a pair of joining projection pieces 5 and 5 in a back part of the frame, the clamp 12 formed of a pair of semicircular sandwiching pieces 10 and 10 having one end connected by a hinge 7, having the other end formed as fastening parts 9 and 9 by a screw 8 and arranging a joining seat 11 in an outside central part of one sandwiching piece, and the relay body 17 joined so that the vice and the clamp can rotate around a first pivot shaft and a second pivot shaft by joining a joining part 13 arranged in one by this joining projection piece and the first pivot shaft 14 by being superposed on the vice 6 side joining projection piece, and joining an interface surface 15 arranged in the other by this joining seat and the second pivot shaft 16 by abutting on the clamp side joining seat. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a universal joint capable of joining two adjacent members regardless of relative angles.

  Conventionally, as a metal fitting for joining two pipes constituting a temporary scaffold, a fence, a shelf and the like, as shown in FIGS. 10 and 11, a pair of sandwiching pieces 41 and 42 formed in an arc shape, one end of which is a hinge part 43 The other end is provided with projecting pieces 44 and 45, and a bolt 47 is passed through a through hole 46 provided in one projecting piece 45, and this bolt 47 is connected to a female screw 48 provided with the other projecting piece 44. Two sets of clamps A and B that are connected by screwing together are connected to joints 49 and 49 formed on adjacent sandwiching pieces 41 and 41 to form a pipe joint whose relative angle can be freely changed through a pivot 50, It is known that the horizontal pipe 51 and the vertical pipe 52 are joined at an arbitrary crossing angle by holding the horizontal pipe 51 in the clamp B and holding the vertical pipe 52 in the other clamp A, for example. Yes.

  However, since this bracket is a pair of clamps of the same shape that are rotatably connected, when joining temporary scaffolding, fences, shelves, etc. to other structures, the structure is made of a circular pipe, Can be joined if there is space for bolt tightening, but if the member is a plate material, mold material, square tube material, etc., or even if it is a circular tube material, other members approach and the space for bolt tightening cannot be obtained In the industry, there has been a strong demand for the appearance of universal joints that can be joined under such conditions.

  The present invention solves the above-mentioned problems, and by combining a vise and a clamp, a universal joint that can easily join a member having a circular cross section and a member having a different shape, square tube, plate, or other shapes. The issue is to provide

  In order to solve the above-described problem, the invention according to claim 1 is a vise in which a fixed jaw is provided on one side of the frame, a movable jaw that is advanced and retracted by a screw is provided on the other side, and a pair of joint protrusions are provided on the back of the frame. A clamp having one end connected by a hinge and the other end formed by a pair of semicircular clamping pieces with a screw tightening portion, and a joint seat provided at the center of the outer side of one clamping piece, The joint provided on the vice side is overlapped with the joint protrusion on the vise side and joined with the first pivot, and the joint surface provided on the other is brought into contact with the joint seat on the clamp side and joined with the second pivot. Then, the vise and the clamp are constituted by a relay body joined so as to be rotatable around the first pivot and the second pivot.

  According to a second aspect of the present invention, when the vise's fixed jaw is formed with an arcuate groove, a V-shaped groove or the like in the vicinity of the center of the depth, and the vise grips a member having a circular cross section, It is characterized in that a part is accommodated in the concave groove.

  The invention according to claim 3 is characterized in that the relay body is formed in a U-shaped planar shape, and reinforcing ribs are formed inside both corners.

  According to a fourth aspect of the present invention, instead of superimposing a joint provided on one side of the relay body on a vice-side joint projecting piece so as to be rotatable about the first pivot, the joint is joined to the joint projecting piece. It is characterized by being overlapped and fixed on a piece.

According to the invention which concerns on Claim 1, the following effect can be acquired.
(1) Since a vise that holds a member with a fixed jaw and a movable jaw that is advanced and retracted by a screw and a clamp that holds the member by screwing a pair of semicircular clamping pieces are joined together, If a member of different shape is used on the vice side, it is possible to join a member having a different shape with a circular cross-section. Can provide new joining means to the industry.
(2) Since the clamp joined by the vice and the relay body is joined by the relay body and the second pivot, when the pivot is rotated around the second pivot, the relative angle of the vise and the clamp in front view is 360 degrees. Since it can be set arbitrarily within the range, regardless of the relative angle of the two members to be joined, the vise and the clamp are adapted to this, the member of the circular cross section is gripped by the clamp, and the plate and the profile are formed by the vise If the square tube material or other members are gripped, the two members can be reliably joined at any relative angle within the range of 360 degrees.
(3) Since the vise joined by the clamp and the relay body is joined by the relay body and the first pivot, when the pivot is rotated around the first pivot, the relative angle of the side view of the vise and the clamp is within a certain range. Can be set arbitrarily, so if you hold a member with a circular cross-section with a clamp and hold a plate, shape, square tube, or other member with a vise, the two members are in any relative range within a certain range. It can be reliably joined even at an angle.

  According to the invention of claim 2, since the fixed jaw of the vise is formed with a concave groove such as an arc shape or a V shape in the vicinity of the center of the depth, Part of this is engaged with the concave portion to prevent lateral displacement, and it is possible to stabilize tube materials, round bars, etc. that are liable to be displaced even if strong tightening is performed, so as not to cause disconnection or the like.

  According to the invention of claim 3, since the relay body is formed in a U-shaped planar shape and the reinforcing ribs are formed inside both corners, the relay body can be formed by pressing a sheet metal. It has sufficient strength and does not cause modulation or failure due to deformation even during long-term use.

According to the invention of claim 4, since the relay body and the vice are integrated, the clamp can be rotated only about the second pivot with respect to the vise.

  Embodiments of a universal joint according to the present invention will be described below with reference to the drawings.

  In FIG. 1 and FIG. 2, symbol A indicates a universal joint according to the present invention. This universal joint A is provided with a fixed jaw 2 on the upper side of the frame 1, a movable jaw 4 that is advanced and retracted with a screw 3 on the lower side, and a vise provided with a pair of joint protrusions 5 and 5 on the back of the frame 1. 6 and a pair of semi-circular clamping pieces 10, 10 having one end connected by a hinge 7 and the other end being a fastening part 9, 9 by a screw 8. For example, the clamp 12 provided with the joint seat 11 and the joint portions 13 and 13 provided on one side are overlapped with the joint protrusions 5 and 5 provided on the vice 6, so that the joint protrusions 5 and 5 and the first pivot 14 are provided. The vice 6 and the clamp 12 are joined to the first pivot by bringing the joint surface 15 provided on the other side into contact with the joint seat 11 provided on the clamp 12 and joining the joint seat 11 and the second pivot 16. 14 and the relay body 17 joined so that the relative angle can be freely changed by turning around the second pivot 16. In constructed. The first pivot 14 and the second pivot 16 may be rivets.

  As shown in FIGS. 1 to 3, the vise 6 has a fixed jaw 2 at the upper end of the frame 1, a support portion 18 of the movable jaw 4 at the lower end, and a female screw 19 at the center of the support portion 18. The movable jaw 4 is attached to the distal end of the female screw 19 and a screw 8 having a hexagon head 20 provided at the lower end is screwed. A pair of joint protrusions 5, 5 are provided on both sides of the back of the frame 1. Is protruding. Further, a reinforcing rib 21 bulging outward is continuously formed in the center portion in the width direction on the support portion 18 of the frame 1, the fixed jaw 2 and the screw 8. Further, the reinforcing rib 21 is fixed to the frame 1. A reinforcing rib 22 is formed at the central portion in the width direction so as to be recessed inwardly at the joint angle portion with the jaw 2 so that double reinforcement by the ribs 21 and 22 is performed. The joint protrusions 5 and 5 have holes 23 through which the first pivot shaft 14 passes.

  The fixed jaw 2 of the vise 6 is formed with a concave portion 24 such as an arc shape or a V shape as shown in FIGS. 1 and 2 in the center portion on the depth side, and the vice 6 is a member 25 (FIG. 5), a part of the peripheral surface of the member 25 is engaged with the recess 24, and when the fixed jaw 2 is flat, the member 25 having a circular cross section that is easy to move even when tightened is stably provided. Be gripped.

  The clamp 12 is formed in a semicircular shape that conforms to the outer shape of the member 25 having a circular cross section as shown in FIGS. 1 to 3, and a pair of sandwiching pieces 10 reinforced by forming reinforcing ribs 26 that bulge outward. 10 is formed by connecting one end with a hinge 7 and using the other end as tightening portions 9 and 9 with screws 8. Then, a joint seat 11 as shown in a longitudinal section in FIG. 3 is provided in the central portion of one sandwiching piece 10, and a hole 27 through which the second pivot 16 is passed is formed in the central portion of the joint seat 11. is there.

  The relay body 17 that joins the vise 6 and the clamp 12 is formed in a U-shaped planar shape as shown in FIG. 2, and is formed on a pair of joining protrusions 5 and 5 provided on the back of the frame 1 on the opening end side. Overlapping joints 13 and 13 are provided, a hole 28 through which the first pivot 14 is passed is formed in these joints 13 and 13, and the back surface of the closed end is joined to a joint seat 11 provided outside the one sandwiching piece 10. The surface 15 has a hole 29 through which the second pivot 16 passes, and a plurality of reinforcing ribs 30 are formed at both corners of the closed end by narrowing inward.

  In order to join the vice 6 and the clamp 12 with the relay body 17, the joint parts 13 and 13 of the relay body 17 are overlapped on the pair of joint protrusions 5 and 5 provided on the back part of the frame 1 of the vice 6. The first pivot 14 is fitted into the hole 23 and the hole 28 formed in the holes, and the stopper 31 is provided at the tip thereof, so that the joint protrusions 5 and 5 and the joints 13 and 13 are rotated about the first pivot 14. The joint seat 11 provided on the outer side of one clamping piece 11 of the clamp 12 abuts on the joint surface 15 provided at the closed end of the relay body 17 so as to be opened in both. The second pivot 16 is fitted into the hole 27 and the hole 29, and a stopper 32 is provided at the tip thereof, so that the joint seat 11 and the joint surface 15 are joined so as to be rotatable around the second pivot 16.

  In addition, as shown in FIG. 4, the junction parts 13 and 13 of the relay body 17 are piled up on a pair of junction protrusions 5 and 5 provided in the back part of the frame 1 of the vice 6, and a pipe is interposed between the junction parts 13 and 13. 34 may be interposed, and a bolt 35 may be inserted into the pipe 34 from one joining projection piece 5 to penetrate the other joining projection piece 5 and tightened with a nut 36 to be fixed.

  In this case, as shown in FIG. 4 and FIG. 5A, the joint portions 13 and 13 of the relay body 17 are overlapped with the pair of joint protrusions 5 and 5 provided on the back portion of the frame 1 of the vice 6. Each contact surface portion may be provided with a concave portion 37 on one of the peripheral portion of the hole 23 and the peripheral portion of the hole 28 and a convex portion 38 on the other side so as to be engageable with each other. According to this, since the concave portion 37 and the convex portion 38 are engaged with each other by rotating by a certain angle and are difficult to move, the frame 1 and the relay body 17 are more firmly fixed. In addition, in order to make it difficult to move each time it rotates by a certain angle as described above, a radial engagement groove 39 is formed in one of the peripheral portions of the hole 23 or the hole 28 as shown in FIG. On the other hand, a convex portion or a radial engagement groove (not shown) that can be engaged with the engagement groove 39 may be formed.

  According to the above configuration, since the relay body 17 and the vice 6 are integrated at a constant angle, the clamp 12 can be rotated with respect to the vice 6 only about the second pivot 16.

  As described above, the universal joint A in which the vice 6 and the clamp 12 are joined by the relay body 17 grips a member 25 having a circular cross section such as a pipe or a round bar on the clamp 12 side, and the vice 6 side is shown in FIG. By gripping a plate material, a mold material shown in FIG. 6B, a square tube material shown in FIG. 6C, a circular pipe material shown in FIG. The member 25 and the member 33 having different shapes that can be joined can be simply joined.

  The vise 6 is provided with a pair of joining protrusions 5 and 5 on both sides of the back portion of the frame 1, and the joining protrusions 5 and 5 are overlapped with the pair of joining parts 13 and 13 provided on the relay body 17. When the clamps 12 are rotated about the first pivot 14 by joining the portions 13 and 13 to the first pivot 14 and rotating the clamp 12 around the first pivot 14, the clamp 12 is in relation to the vice 6 as shown in FIG. From the forward tilt state to the upright state as shown in FIG. 7B and the rearward tilt state as shown in FIG. 7C, it is positioned horizontally above the vice 6 as shown in FIG. 7D. The relative angle of the side view can be freely changed within a range of about 110 degrees until the state.

  Further, the clamp 12 abuts the joint seat 11 provided outside the one sandwiching piece 10 against the joint surface 15 provided on the back portion of the relay body 17 so that the clamp 12 is rotatable by the joint surface 15 and the second pivot 16. Since it is connected, when the clamp 12 is rotated to the right about the second pivot 16, the clamp 12 is brought into the state shown in FIG. As shown in FIG. 8 (e), a state of tilting to the right with respect to the vice 6, as shown in FIG. As shown in FIG. 8, the vertical relationship is reversed and the state returns to the state corresponding to the vice 6, and during this time, the member 25 held by the clamp 12 is changed the direction by 180 degrees, and the right side in FIG. So that the end that is located on the left side as shown in FIG. It is conversion.

  As described above, when the left and right sides are reversed by the rotation of 180 degrees and the clamp 12 as shown in FIG. 9A is further rotated to the right, the clamp 12 is moved from the state of FIG. As shown in FIG. 9B, the state tilts to the right with respect to the vice 6, as shown in FIG. 9C, the state orthogonal to the vice 6, and as shown in FIG. As shown in FIG. 9 (e), the vertical relationship is reversed and the state returns to match with the vise 6. During this time, the member 25 held by the clamp 12 is further turned 180 degrees, and in total, The relative angle to the vice 6 is changed by 360 degrees.

  Therefore, if this universal joint A is used, the relative angle between the vice 6 and the clamp 12 can be arbitrarily set within the range of 360 degrees in the front view and within the range of 110 degrees in the side view. 25 and the various members 33 having different shapes such as plate, shape, square tube, circular tube, and other shapes, regardless of the relative angle between them, the vice 6 and the clamp 12 are always reliably matched to this. Can be joined.

  INDUSTRIAL APPLICABILITY The present invention can be used to join a member having a circular cross section and a member having various cross-sectional shapes regardless of the relative angle between them.

The perspective view of the universal joint which concerns on this invention. The top view of the said universal joint. The side view which shows the vise, clamp, and relay body which comprise a universal joint. The top view which shows the other form of the joining aspect of the flame | frame of a vise and a relay body. (A) and (b) are engagement mode explanatory views of a frame and a relay body. (A) (b) (c) (d) is explanatory drawing which shows an example of the member hold | gripped with a vise. (A) (b) (c) (d) is explanatory drawing which shows the change aspect of the relative angle of the side view of a vise and a clamp. (A) (b) (c) (d) (e) is explanatory drawing which shows the first half of the change aspect of the relative angle of the vise and a clamp by the front view. (A) (b) (c) (d) (e) is explanatory drawing which shows the second half of the change aspect of the relative angle of the side view of a vise and a clamp. The front view of the pipe joint which can change the conventional relative angle. Explanatory drawing which shows the joining state of the pipe material by the said coupling.

Explanation of symbols

A universal joint 1 frame 2 fixed jaw 3 screw 4 movable jaw 5 5 joint protrusion 6 vise 7 hinge 8 screw 9 tightening portion 10 clamping piece 11 joint seat 12 clamp 13 joint portion 14 first pivot 15 joint surface 16 second Axis 17 Relay

Claims (4)

A vise with a fixed jaw on one side of the frame, a movable jaw that is advanced and retracted with screws on the other side, and a pair of joint protrusions on the back of the frame;
One end is connected by a hinge and the other end is formed by a pair of semi-circular clamping pieces with a screw tightening part, and the outer central part of one clamping piece has a clamp provided with a joint seat,
The joint portion provided on one side is overlapped with the vice-side joint projection piece and joined with the first pivot, and the joint surface provided on the other side is brought into contact with the joint seat on the clamp side and joined with the second pivot. Thus, a universal joint comprising a vice and a clamp joined together so as to be able to rotate around the first pivot and the second pivot.   When the vise's fixed jaw is formed with an arcuate groove, a V-shaped groove or the like in the vicinity of the center of the depth, and the vice grips a member having a circular cross section, a part of the circumferential surface of the member is accommodated in the groove. The universal joint according to claim 1, wherein the universal joint is configured as described above.   The universal joint according to claim 1 or 2, wherein the relay body is formed in a U-shaped planar shape, and reinforcing ribs are formed inside both corners.   Instead of superimposing the joint provided on one side of the relay body on the vice-side joint projecting piece and pivoting it on the first pivot, the joint part is superposed on the joint projecting piece and fixed. A universal joint.

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