JP2015161383A - Connected body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connected body capable of smoothly and rapidly fixing and releasing of fixed state of the second member that can be slid in an axial direction in respect to the first member having a connecting hole along a linear axial line under a state in which it is fitted and inserted into the connecting hole.SOLUTION: A brake piece C and a screw part C2 for a brake are fitted and inserted into a connecting hole part A1 of the first member A under a state in which the brake piece C is outwardly fitted to an operating part B2 of the second member B and the screw part C2 for a brake is engaged in thread with an operating screw part B3. The second member B is turned in respect to the first member A to cause the brake piece C to be forcedly contacted with the connecting hole part A1 to fix the first member A and the second member B, their turning in a reverse direction releases the fixed state. Continuation of turning in a releasing direction causes the releasing side terminal end BX of the operating screw part B3 and the releasing side terminal end part CX of the screw part C2 for a brake to be contacted to each other in a turning direction. The releasing side terminal end BX of the operating screw part B3 occupies the position of 1/3 at the upstream side of a recess C1 in a circumferential direction of the brake piece C.

Description

  The present invention relates to a connecting body such as a telescopic pipe used as a handle of a cleaning tool or other equipment, or a clothesline.

  Japanese Utility Model Publication No. 61-31757 includes a large-diameter flange, an expansion nut that is press-fitted to the large-diameter flange, and a small-diameter flange that can be inserted into the large-diameter flange. An invention of a telescopic rod having a locking groove having a split groove on the outer wall and a female screw inside, and a male screw at the tip of the small-diameter rod is disclosed.

  In this extension rod, the small-diameter rod is rotated forward with respect to the large-diameter rod, and the male screw of the locking bolt is fully screwed into the female screw of the expansion nut, so that the split groove of the expansion nut is expanded and removed. The outer peripheral surface of the expanded nut with an enlarged diameter can be pressed and fixed to an arbitrary location inside the large diameter rod. In this state, by rotating the small-diameter rod reversely with respect to the large-diameter rod and loosening the engagement of the male screw of the locking bolt with the female screw of the expansion-diameter nut, the inside of the large-diameter rod due to the expansion of the outer diameter of the expansion-diameter nut The heel can be expanded and contracted by releasing the pressure contact and sliding the expansion nut in the axial direction inside the large diameter ridge.

  However, when releasing the pressure contact of the outer peripheral surface of the expansion nut with respect to the inside of the large diameter rod, if the small diameter rod is rotated in the reverse direction with respect to the large diameter rod, the locking bolt will be disengaged from the expansion nut and the telescopic operation will be performed. Cannot be carried out smoothly.

Japanese Utility Model Publication No. 61-31757

  The present invention has been made in view of the above-described problems and the like in the prior art, and in the axial direction in a state in which the first member having a connecting hole along the linear axis is fitted into the connecting hole. It is an object of the present invention to provide a connecting body that can fix and release the slidable second member smoothly and promptly.

  The present invention can be expressed as follows.

(1) a first member having a connecting hole along a linear axis;
A second member having an insertion slide portion along a linear axis and having an ability to slide in the axial direction with respect to the connection hole portion in a state of being inserted into the connection hole portion;
A coupling body having a notched annular brake piece that is partially cut off in the circumferential direction and can elastically expand and contract in a substantially radial direction,
The slide insertion portion of the second member has an operating screw portion on the outer peripheral side, and includes an operating portion in which the radial dimension of the outer peripheral portion varies depending on the axial position,
The brake piece has a brake thread portion on the inner peripheral side,
The brake piece is externally fitted to the operating portion, and the operating screw portion and the brake screw portion are screwed together, so that the brake piece and the fitting insertion slide portion of the second member rotate relatively around the axis. As a result, the relative axial position of the brake piece with respect to the operating part can change,
Since the radial dimension of the outer peripheral portion of the operating portion varies depending on the axial position, the brake piece is positioned at a predetermined position in the axial direction with respect to the operating portion, so that the outer peripheral portion of the brake piece becomes the inner periphery of the connecting hole portion. When the brake piece is positioned at a position other than the predetermined position in the axial direction with respect to the operating portion, the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released. And
In a state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, at least a part of the outer peripheral portion of the brake piece can be in contact with the inner peripheral portion of the connecting hole portion of the first member, In contrast, by rotating the second member relative to one direction, at least a part of the outer peripheral portion of the brake piece is in contact with the inner peripheral portion of the connecting hole portion of the first member, thereby preventing or suppressing rotation with respect to the first member. The fitting slide portion of the second member is rotated relative to the brake piece in the same direction, and the brake piece is moved relative to the predetermined position with respect to the operating portion to connect the outer periphery of the brake piece. Can be in pressure contact with the inner periphery of the hole,
In the state where the brake piece is positioned at the predetermined position with respect to the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the one direction of the second member with respect to the first member is By rotating relative to the other direction, which is the opposite direction, the fitting slide portion of the second member is also rotated relative to the brake piece in the other direction, so that the brake piece is moved from a predetermined position relative to the operating portion. It can be moved relatively, and the pressure contact state of the outer peripheral part of the brake piece with respect to the inner peripheral part of the connecting hole part can be released,
The operating screw portion and the brake screw portion are in a direction in which the fitting insertion slide portion of the second member with respect to the brake piece is released from the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connection hole portion. If the relative rotation continues in the other direction, the release-side end portion of the operating screw portion and the release-side end portion of the brake screw portion come into contact with the direction of rotation, and further relative rotation is prevented. Has a structure,
The release-side end of the brake thread is located upstream of the notch in the circumferential direction of the brake piece,
From the state in which the release-side end portion of the brake screw portion and the release-side end portion of the actuating screw portion are in contact with each other in the rotation direction, the second member is further rotated relative to the first member in the other direction. In this case, it is possible to prevent the relative rotation of the brake piece with respect to the first member from being hindered.

  A notched annular brake piece in an operating portion having an operating screw portion on the outer peripheral portion in an insertion slide portion that can slide in the axial direction with respect to the connecting hole portion in a state of being inserted into the connecting hole portion of the first member. Are fitted, and the brake screw portion on the inner peripheral side of the brake piece and the operation screw portion on the outer peripheral side of the operating portion are screwed together.

  The relative position of the brake piece in the axial direction of the brake piece relative to the operating part is changed by the relative rotation of the brake piece and the insertion slide part around the axis, and the radial dimension of the outer peripheral part of the operating part is the axial position. Therefore, when the brake piece is positioned at a predetermined position in the axial direction with respect to the operating portion, the outer peripheral portion of the brake piece comes into pressure contact with the inner peripheral portion of the connecting hole portion, and the brake piece is axially connected to the operating portion. By being located at a position other than the predetermined position in the direction, the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released.

  In a state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, at least one of the outer peripheral portions of the brake piece is rotated by rotating the second member relative to the first member in one direction. The part is in contact with the inner peripheral part of the connecting hole part of the first member, and the fitting slide part of the second member is relatively rotated in the same one direction with respect to the brake piece whose rotation with respect to the first member is prevented or suppressed. The brake piece is moved relative to the predetermined position with respect to the operating portion (one or both of the operating portion and the brake piece are moved relative to the other), and the outer peripheral portion of the brake piece is pressed against the inner peripheral portion of the connecting hole portion. As a result, the second member can be fixed to the first member.

  In a state where the brake piece is positioned at a predetermined position with respect to the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the second member is opposite to the one direction with respect to the first member. Relative rotation in the other direction, which is the same direction, the relative insertion of the second member relative to the brake piece in the other direction also causes the brake piece to move relative to the operating portion from a predetermined position. The second member is fixed to the first member by releasing the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole.

  The other of the operating screw portion and the brake screw portion is such that the fitting insertion slide portion of the second member with respect to the brake piece is in a direction in which the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released. When the relative rotation continues in this direction, the release-side end portion of the actuating screw portion and the release-side end portion of the brake screw portion come into contact with the rotation direction, and further relative rotation is prevented.

  For this reason, when the releasing operation for rotating the second member relative to the first member in the other direction is performed, the screwed state of the brake screw portion and the operating screw portion is maintained. In a state in which the pressure contact of the outer peripheral portion of the brake piece with respect to the peripheral portion is released, the brake member is relatively moved to a predetermined position with respect to the operating portion by rotating the second member relative to the first member in one direction. As a result, the operation of fixing the second member to the first member can be promptly performed with the outer peripheral portion of the brake piece being in pressure contact with the inner peripheral portion of the connecting hole portion.

  Further, the second member is further rotated relative to the first member in the other direction from the state in which the release-side end portion of the brake screw portion and the release-side end portion of the operating screw portion are in contact with each other in the rotation direction. As a result, the release-side end portion of the actuating screw portion is positioned in the circumferential direction toward the notch portion, with the release-side end portion of the brake screw portion positioned upstream of the notch portion in the circumferential direction of the brake piece. By pushing, the notch part of the brake piece slightly contracts in the circumferential direction, and the outer periphery part of the brake piece upstream of the notch part is displaced slightly inward.

  Therefore, the rotation of the brake piece with respect to the first member is prevented from being hindered by the inner peripheral portion of the connecting hole portion of the first member, so that the second member rotates relative to the first member in the other direction. Is prevented from being inhibited or suppressed, and the second member is rotated relative to the first member in one direction opposite to the first member, and the second member is fixed to the first member smoothly. Can be migrated to.

  (2) The coupling body according to (1), wherein the release-side end portion of the brake screw portion is located at a position that is less than or equal to one half of the upstream side of the notch portion in the circumferential direction of the brake piece.

  From the state in which the release-side end portion of the brake screw portion and the release-side end portion of the actuating screw portion are in contact with each other in the rotation direction, the second member is further rotated relative to the first member in the other direction. In this case, the release-side end portion of the operating screw portion pushes the release-side end portion of the brake screw portion located upstream of the notch portion in the circumferential direction of the brake piece toward the notch portion in the circumferential direction. It becomes.

  Since the release-side end portion of the brake screw portion is located at a position that is less than or equal to one half of the upstream side of the notch portion in the circumferential direction of the brake piece, the release-side end portion of the operation screw portion is directed toward the notch portion. By pushing in the circumferential direction, the notch of the brake piece is more reliably contracted in the circumferential direction, and the outer periphery of the brake piece on the upstream side of the notch is displaced slightly inward, and the brake piece against the first member is displaced. The rotation is prevented from being hindered by the inner peripheral portion of the connecting hole portion of the first member.

(3) The operating part has a bulging part whose outer peripheral part bulges and a non-bulging part which does not bulge,
When the brake piece is located at the bulging part of the operating part, the outer peripheral part of the brake piece can be pressed against the inner peripheral part of the connecting hole part,
The outer peripheral part of the brake piece located in the non-bulged part of the operating part cannot be pressed against the inner peripheral part of the connecting hole part
The linked body according to (1) or (2).

  In a state where the brake piece is located at the non-bulged portion of the operating portion and the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, the second member is relative to the first member in one direction. By rotating, at least a part of the outer peripheral portion of the brake piece is in contact with the inner peripheral portion of the connection hole portion of the first member, and the second member is fitted to the brake piece whose rotation with respect to the first member is prevented or suppressed. The insertion slide part is relatively rotated in the same direction, and the brake piece is moved relative to the bulging part of the operating part so that the outer peripheral part of the brake piece is in pressure contact with the inner peripheral part of the connecting hole part. be able to.

  In a state where the brake piece is positioned at the bulging portion of the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the second member is rotated relative to the first member in the other direction. Thus, the fitting slide part of the second member is also relatively rotated in the other direction with respect to the brake piece to move the brake piece relatively to the non-bulged part of the operating part, and the inner peripheral part of the connecting hole part The pressure contact state of the outer peripheral portion of the brake piece with respect to can be released.

  (4) The coupling body according to (3), wherein the whole or a part of the operating portion extending from the non-bulged portion to the bulging portion is such that the outer peripheral portion gradually bulges in one axial direction.

  In this case, the brake piece externally fitted to the operating part is moved relative to the non-bulged part and the bulging part of the working part, and the outer peripheral part of the brake piece with respect to the inner peripheral part of the connecting hole part thereby Transition between the pressure release state and the pressure contact state can be performed smoothly.

  The coupling body of the present invention is an insertion slide portion along a linear axis with respect to a first member having a coupling hole along a linear axis, and is connected in a state of being inserted into the coupling hole. The second member having a member that can slide in the axial direction with respect to the hole portion can be fixed smoothly and promptly and can be released for sliding.

It is a perspective view of the 2nd member and brake piece of the coupling body (expandable pipe) of the present invention. It is a longitudinal cross-sectional explanatory drawing of the fixed state of the coupling body (expandable pipe) of this invention. It is longitudinal cross-sectional explanatory drawing of the fixed release state of the coupling body (expandable pipe) of this invention. It is a cross-sectional explanatory drawing of the coupling body (expandable pipe) of this invention. It is a perspective view of the 2nd member and brake piece of the coupling body (expandable pipe) of the 1st comparative example. It is a longitudinal cross-sectional explanatory drawing of the fixed release state of the coupling body (expandable pipe) of a 1st comparative example. It is a cross-sectional explanatory drawing of the connection body (expandable pipe) of a 1st comparative example. It is a perspective view of the 2nd member and brake piece of the coupling body (expandable pipe) of the 2nd comparative example. It is longitudinal cross-sectional explanatory drawing of the fixed release state of the coupling body (expandable pipe) of the 2nd comparative example.

  [1] An embodiment of the present invention will be described with reference to the drawings.

  1 to 4 all relate to an expansion pipe as an example of an embodiment of a connection body of the present invention.

  (1) This expandable pipe has a first member A, a second member B, and a brake piece C, and is used as a handle for a cleaning tool, but the application is not limited to this.

  (2) The first member A is a cylindrical pipe and has a connecting hole A1 along a linear axis.

  (3) The second member B is a cylindrical pipe whose portion excluding a base end portion (not shown) is an insertion slide portion B1.

  The insertion slide portion B1 is along a linear axis, and can slide in the axial direction with respect to the connection hole A1 in a state of being inserted into the connection hole A1 of the first member A.

  The insertion slide part B1 of the second member B has an operation part B2 at a tip part that is an end part on the back side that is inserted into the connection hole part A1.

  (4) The brake piece C has a shape in which a part in the circumferential direction of the cylindrical body made of synthetic resin is cut out, and can be elastically expanded and contracted in a substantially radial direction by the notch C1 expanding and contracting in the circumferential direction. Make a notch ring. The outer peripheral surface of the brake piece C is a smooth surface.

  (5) The operating portion B2 in the insertion slide portion B1 has a substantially truncated cone shape in which the outer diameter gradually increases from the tip toward the base (that is, the outer peripheral portion gradually expands).

  The operating part B2 has an operating screw part B3 on the outer peripheral side. The actuating screw part B3 is a female thread around the axial direction in a half portion on the distal end side of the actuating part B2. About half of the base end side of the operating part B2 is a frustoconical outer peripheral surface part B4.

  The brake piece C has a brake screw portion C2 across the notch C1 on the inner peripheral side. One end portion of the brake piece C in the axial direction is spiral, and is screwed with the operating screw portion B3 along the spiral end portion and including the notch portion C1 over a 360 ° central angle (not necessarily limited thereto). A male threaded brake thread C2 is formed.

  As shown in FIGS. 2 and 3, the brake piece C is externally fitted to the operating portion B2, and the operating screw portion B3 and the brake screw portion C2 are screwed together. In a state where both are screwed together, the brake piece C and the fitting insertion slide part B1 of the second member B are rotated relatively around the axis line, so that the relative axial position of the brake piece C with respect to the operating part B2 is increased. Change.

  The brake piece C is detached from the operation portion B2 in the axial direction at the base end portion of the operation portion B2 in the insertion slide portion B1, and the operation screw portion B3 and the brake screw portion C2 are detached from the screwed state. It has a bowl-shaped part B5 for preventing it.

  (6) The radial dimension of the outer peripheral portion of the operating portion B2 (the operating screw portion B3 on the distal end side and the frustoconical outer peripheral surface portion B4 on the proximal end side) gradually increases from the distal end toward the proximal end.

  The axial length of the brake piece C is about 70% of the axial length of the operating portion B2.

  About 30% of the operating part B2 on the base side is a bulging part (predetermined position in the axial direction) with the outer peripheral part bulging, and about 70% on the tip side is a non-bulging part (axial line) that is not bulging. Position other than a predetermined position in the direction). As shown in FIG. 2, the brake piece C is positioned on the base side (the lower side in FIG. 2) with respect to the operating part B <b> 2, thereby positioning the brake piece C at least about 30% of the operating part B <b> 2 on the base side. Part, that is, at least a little less than 50% of the outer periphery of the brake piece C is in pressure contact with the inner periphery of the connecting hole A1, and the brake piece C is in front of the operating part B2, as shown in FIG. By being located on the side (the upper side in FIG. 3), the pressure contact with the inner peripheral portion of the connecting hole portion A1 of the outer peripheral portion over the entire length in the axial direction of the brake piece C is released.

  The pressure contact release and the pressure contact state of the outer peripheral portion of the brake piece C with respect to the inner peripheral portion of the connection hole A1 are realized as follows.

  That is, in a state where the brake piece C is located on the distal end side, the brake piece C is externally fitted in a state having play in the radial direction with respect to the operating portion B2, and the brake piece C of the connecting piece A1 with respect to the inner peripheral portion of the connecting hole portion A1. The pressure contact of the outer peripheral portion is in a released state, and when the brake piece C is located on the base side, there is no radial play on the distal end side, and the radial dimension of the outer peripheral portion of the brake piece C is maintained. On the base side, the outer peripheral part of the brake piece C is in a state where the outer peripheral part of the brake piece C is expanded radially outward, so that the outer peripheral part of the brake piece C is in pressure contact with the inner peripheral part of the connecting hole A1.

  (7) When the brake piece C is positioned on the tip side (upper side in FIG. 3) of the operating part B2 and the pressure contact of the outer peripheral part of the brake piece C with respect to the inner peripheral part of the connecting hole A1 is released, the operation is performed. The brake piece C is externally fitted in a state having play in the radial direction with respect to the portion B2, and at least a part of the outer peripheral portion of the brake piece C is in contact with the inner peripheral portion of the connecting hole portion A1.

  In this state, when the second member B is rotated relative to the first member A in one direction (counterclockwise in the state shown in FIG. 3), at least a part of the outer peripheral portion of the brake piece C is the first member. By contacting the inner peripheral portion of the connecting hole A1 of A, the rotation of the brake piece C relative to the first member A is prevented or suppressed.

  For this reason, the fitting slide part B1 of the second member B rotates relative to the brake piece C in the one direction, and the brake piece C relative to the base part side (lower side in FIG. 2) relative to the operating part B2. The second member B can be fixed to the first member A in a state where the outer peripheral portion of the brake piece C is brought into pressure contact with the inner peripheral portion of the connecting hole A1.

  As shown in FIG. 2, in the state where the brake piece C is located on the base side with respect to the operating portion B2 and the outer peripheral portion of the brake piece C is in pressure contact with the inner peripheral portion of the connecting hole portion A1, the first member A is When the two members B are rotated relative to the other direction (clockwise in the state shown in FIG. 2) opposite to the one direction, the brake piece is pressed against the inner peripheral portion of the connecting hole A1. Similarly, the insertion slide part B1 of the second member B is relatively rotated in the other direction with respect to C to move the brake piece C toward the distal end side with respect to the operation part B2, and the brake piece with respect to the inner peripheral part of the connection hole A1 The pressure contact state of the outer peripheral portion of C can be released, and the fixation of the second member B to the first member A can be released.

  (8) The operating screw portion B3 and the brake screw portion C2 are such that the insertion slide portion B1 of the second member B is pressed against the brake piece C with the outer peripheral portion of the brake piece C against the inner peripheral portion of the connecting hole A1. When the relative rotation continues in the other direction (the clockwise direction in the state shown in FIGS. 2 and 3), which is the direction in which the state is released, the release-side end portion BX of the actuating screw portion B3 and the brake screw portion The release-side terminal portion CX of C2 reaches a state where it contacts the direction of rotation, and has a structure in which further relative rotation is prevented. That is, the actuating screw portion B3 is a spiral groove portion (female screw portion) and the brake screw portion C2 is a spiral protrusion portion (male screw portion), and the release end portion BX of the spiral groove portion (end on the front end side in the axial direction) ) Is a wall portion formed perpendicular to the spiral direction in the groove portion, and an end face where the release-side termination portion CX of the spiral protrusion is formed perpendicular to the spiral direction. And it is the structure where both contact | abut and the relative rotation beyond it is blocked | prevented.

  (9) The release-side end portion CX of the brake screw portion C2 is located at a third position on the upstream side of the notch portion C1 in the circumferential direction of the brake piece C.

  From the state in which the release-side end portion CX of the brake screw portion C2 and the release-side end portion BX of the operation screw portion B3 are in contact with each other in the direction of rotation, the second member B is further moved toward the other direction with respect to the first member A. By attempting to make the relative rotation (clockwise in the state shown in FIG. 3), the release-side end portion BX of the operating screw portion B3 is moved in the circumferential direction of the brake piece C as shown in FIG. The release-side end portion CX of the brake screw portion C2 positioned on the upstream side of the notch portion C1 is pushed in the circumferential direction toward the notch portion C1 as indicated by an arrow BR, so that the notch portion C1 of the brake piece C slightly contracts in the circumferential direction. Then, the outer peripheral portion of the brake piece C on the upstream side of the notch C1 is displaced slightly inward as indicated by the arrow CR.

  Therefore, the rotation of the brake piece C with respect to the first member A is hindered by the inner peripheral portion of the connection hole A1 of the first member A (therefore, the second member B is relative to the first member A in the other direction. Therefore, relative rotation of the second member B relative to the first member A in the opposite direction (counterclockwise in the state shown in FIG. 2) is prevented. It is possible to smoothly shift to an operation of rotating and fixing the second member B to the first member A.

  (10) FIGS. 5, 6, and 7 relating to the connection body (expandable pipe) of the first comparative example are shown in FIGS. 5, 6, and 7, where the release-side terminal portion CQ of the brake thread portion CP is downstream of the notch portion C <b> 1 in the circumferential direction of the brake piece C. 1, 3, and 4, respectively, except that it faces the side.

  In this case, from the state in which the release-side end portion CQ of the brake screw portion C2 and the release-side end portion BX of the operating screw portion B3 are in contact with each other in the direction of rotation, the second member B is further moved with respect to the first member A. By attempting to rotate the other direction (clockwise in the state shown in FIG. 6), as shown in FIG. The release-side end portion CQ of the brake thread portion CP facing the downstream side of the notch portion C1 in the circumferential direction is pushed in the circumferential direction so as to be separated from the notch portion C1 as indicated by an arrow BS, so that the notch portion C1 of the brake piece C is surrounded. It expands slightly in the direction, and the outer peripheral portion of the brake piece C on the downstream side of the notch C1 is displaced slightly outward as indicated by the arrow CS.

  Therefore, the rotation of the brake piece C relative to the first member A is hindered by the inner peripheral portion of the connection hole A1 of the first member A (therefore, the second member B is rotated relative to the first member A in the other direction. Therefore, the second member B is rotated relative to the first member A in the opposite direction (counterclockwise in the state shown in FIG. 6). It is not possible to smoothly shift to the operation of fixing the second member B to the member A. Further, the state in which the rotation of the brake piece C with respect to the first member A is hindered by the inner peripheral portion of the connection hole A1 of the first member A, the outer peripheral portion of the brake piece C is the inner peripheral portion of the connection hole A1. The second member B may be misidentified as being fixed to the first member A by being pressed against the first member A.

  (11) FIG. 8 and FIG. 9 relating to the coupling body (expandable pipe) of the second comparative example show that the release-side end portion BQ of the operating screw portion BP is in an open state, and the hook-shaped portion BY is on the distal end side of the operating portion B2. 5 and FIG. 6 respectively.

  In this case, the operating screw portion B3 and the brake screw portion C2 are configured such that the insertion slide portion B1 of the second member B is pressed against the brake piece C at the outer peripheral portion of the brake piece C with respect to the inner peripheral portion of the connecting hole portion A1. When the relative rotation continues in the other direction (the clockwise direction in the state shown in FIG. 9), the release-side end portion CQ of the brake screw portion C2 becomes the release side of the operation screw portion B3. Passing through the end portion BQ, it is idle, and relative rotation is not prevented. Even in this case, the hook-shaped portion BY prevents the brake piece C from being detached from the operating portion B2, the brake piece C is fitted on the operating portion B2, and the operating screw portion B3 and the brake screw portion C2 are connected. The screwed state is maintained.

  However, in this state where the release-side end portion CQ of the brake screw portion C2 passes through the release-side end portion BQ of the operating screw portion B3 and is idle, the second member B is reversed with respect to the first member A. When the second member B is fixed relative to the first member A by rotating relative to one direction (counterclockwise in the state shown in FIG. 9), the relative rotation in the reverse direction corresponding to the center angle of the idle rotation is obtained. Movement (however, less than 360 degrees) is required, and it is impeded that the second member B is fixed to the first member A quickly and smoothly.

  [2] Embodiments of the present invention will be further described, including forms other than those described above.

  (1) The coupling body of the present invention includes a first member, a second member, and a brake piece.

  Specific examples of the connector of the present invention include a stretchable pipe made of a metal or other material used as a handle for a mop or other cleaning tool or other appliance, or a clothesline. It is not limited and may be other than pipes.

  (2) The first member has a connecting hole along a straight axis, and the connecting hole is generally cylindrical, but the first member is not limited to this. It may be a connecting hole portion having a polygonal cross section along the line.

  Specific examples of the first member include cylindrical pipes, but are not limited thereto.

  (3) The second member has an insertion slide portion along a linear axis.

  The insertion slide portion can slide in the axial direction with respect to the connection hole portion in a state of being inserted into the connection hole portion of the first member.

  Part or all of the second member can be used as an insertion slide part.

  In addition, the insertion slide part can be inserted or removed by sliding the part or the whole in the axial direction with respect to the connection hole part of the first member.

  In order to prevent a part of the insertion slide part from being detached from the connection hole part of the first member, for example, another part in the vicinity of the opening part where the insertion insertion slide part enters and exits or other part of the connection hole part. Inwardly projecting inward (annularly or at one or a plurality of locations) is provided, and a portion of the insertion slide portion located on the back side of the inward projection portion of the coupling hole portion A means of providing an outward protrusion that prevents the connection protrusion from moving toward the opening side by the outward protrusion can be mentioned, but is not limited thereto.

  The fitting insertion slide portion of the second member is provided with an operating portion in the vicinity of the rear end portion to be inserted into the connecting hole portion or at another position.

  (4) The brake piece is a cylindrical body made of synthetic resin or other material, or has a shape in which a part in the circumferential direction is cut out in an annular body of another shape, and the brake piece is almost expanded or contracted in the circumferential direction. A notch ring that can elastically expand and contract in the radial direction can be formed.

  The outer peripheral surface of the brake piece can be a smooth surface, and in order to adjust the frictional force with the inner peripheral portion of the connecting hole, a large number of axial grooves or ridges or a large number of small protrusions or recesses It is also possible to cover the surface with a rubbery material or other material capable of adjusting the frictional force.

  (5) The operation part in the insertion slide part has an operation screw part on the outer peripheral side. The screw portion for operation can be provided over a portion in the axial direction of the operating portion (for example, about 30 to 70% on one side in the axial direction) or the whole. Further, the operating screw portion can be a male screw portion or a female screw portion around the axial direction.

  The brake piece has a brake thread portion on the inner peripheral side. The brake thread portion may cross the notch portion. Further, the brake thread portion may be a portion in the axial direction of the brake piece (for example, one end portion in the axial direction of the brake piece has a spiral shape, and has a brake screw portion along the spiral end portion. Or all of them. Further, the brake thread portion can be an internal thread portion or an external thread portion around an axial direction that can be screwed with the actuating thread portion.

  The brake piece is fitted on the operating portion, and the operating screw portion and the brake screw portion are screwed together. The relative position of the brake piece in the axial direction of the brake piece with respect to the operating portion is changed by the relative rotation of the brake piece and the fitting insertion slide portion of the second member around the axis line in a state where both are screwed together.

  At both ends (or one end) in the axial direction of the operating portion of the insertion slide portion, the brake piece is detached from the operating portion in the axial direction (particularly, the operating screw portion and the brake screw portion are screwed together). It is possible to have a hook-like portion for preventing the detachment from

  (6) Since the radial dimension of the outer peripheral portion of the operating portion (the operating screw portion and the cylindrical outer peripheral surface portion and / or the frustoconical outer peripheral surface portion) varies depending on the position in the axial direction, By positioning at a predetermined position in the direction, the outer peripheral portion of the brake piece comes into pressure contact with the inner peripheral portion of the connecting hole portion, and the brake piece is positioned at a position other than the predetermined position in the axial direction with respect to the operating portion. Thus, the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released.

  For example, when the operating part has a bulging part (a predetermined position in the axial direction) in which the outer peripheral part bulges and a non-bulging part (a position other than the predetermined position in the axial direction) that does not bulge, the brake piece operates. The outer peripheral portion of the brake piece can be pressed against the inner peripheral portion of the connecting hole portion, and the outer peripheral portion of the brake piece positioned at the non-extended portion of the operating portion is the connecting hole portion. It cannot be pressed against the inner periphery of the.

  In addition, the whole or a part of the operating portion extending from the non-bulged portion to the bulging portion may be gradually bulged toward the one axial direction.

  The radial dimension of the outer peripheral part of the working part is, for example, gradually bulging from one end to the other end in the axial direction of the working part from the non-bulging state to the bulging state; non-bulging (constant) / gradual swelling Bulging / bulging (constant); gradually changing from non-bulging state to bulging state, bulging / bulging (constant); non-bulging (constant), bulging (constant), etc. , Not limited to these, non-bulging (constant), gradual bulging, bulging (constant), gradual reduction, non-bulging (constant); non-bulging (constant), bulging (constant), non-bulging It is also possible to change the output (fixed).

  The pressure contact release and the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion are realized as follows, for example.

  That is, for example, at an axial position other than a predetermined position, the brake piece is fitted in a state having play in the radial direction with respect to the operating portion, and the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is At the predetermined position where the outer peripheral part of the operating part bulges out, there is no radial play and the radial dimension of the outer peripheral part of the brake piece is maintained or the outer peripheral part of the brake piece is out of the radial direction. By enlarging in the direction, the brake piece is externally fitted, whereby the outer peripheral portion of the brake piece can be brought into pressure contact with the inner peripheral portion of the connecting hole portion.

  Or, for example, at an axial position other than a predetermined position, the brake piece is fitted outside without any radial play with respect to the operating portion, and the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released. In the predetermined position where the outer peripheral part of the operating part bulges, the outer peripheral part of the brake piece expands radially outward and the brake piece is fitted externally. The outer peripheral portion of the brake piece may be in pressure contact with the peripheral portion.

  (7) In a state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, at least a part of the outer peripheral portion of the brake piece can contact the inner peripheral portion of the connecting hole portion of the first member.

  As an example of this, in a state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, for example, the brake piece is externally fitted with play in the radial direction with respect to the operating portion. Thus, when at least a part of the outer peripheral portion of the brake piece is in contact with the inner peripheral portion of the connecting hole portion, or, for example, the brake piece is externally fitted with no play in the radial direction with respect to the operating portion. A case where a part of the outer peripheral portion elastically rises radially outward and contacts the inner peripheral portion of the connecting hole portion can be exemplified.

  When the second member is rotated relative to the first member in one direction in a state where the pressure contact of the outer periphery of the brake piece with respect to the inner periphery of the connecting hole is released, at least a part of the outer periphery of the brake piece Is in contact with the inner periphery of the connection hole of the first member, thereby preventing or suppressing the rotation of the brake piece relative to the first member.

  Therefore, the fitting slide part of the second member rotates relative to the brake piece in the one direction, the brake piece moves relative to the predetermined position relative to the operating part, and the outer peripheral part of the brake piece is connected. It can be set as the state pressed against the inner peripheral part of the hole.

  In the state where the brake piece is positioned at the predetermined position with respect to the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the one direction of the second member with respect to the first member is When the relative rotation is made in the other direction, which is the opposite direction, the fitting slide part of the second member is similarly rotated in the other direction with respect to the brake piece pressed against the inner periphery of the connecting hole. The brake piece can be moved relative to the portion from a predetermined position to release the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion.

  For example, when there is a position other than the predetermined position on both sides across the predetermined position in the axial direction, in the state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, the first By rotating the second member relative to the member in one direction, the second member can be fixed to the first member so that the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion. In a state where the brake piece is positioned at a predetermined position with respect to the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the second member is set to the one direction with respect to the first member. Is released from the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion by relative rotation in the opposite direction or in the same direction as the one direction. Unlock the two members Can.

  (8) The actuating screw portion and the brake screw portion are arranged in such a direction that the fitting insertion slide portion of the second member with respect to the brake piece is released from the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion. When relative rotation continues in the other direction (or when there is a position other than the predetermined position on both sides of the predetermined position in the axial direction as described above, for example, the other direction or the one If the rotation end of the actuating screw part and the release end of the brake screw part come into contact with the direction of rotation, further relative rotation is prevented. It has a structure.

  Such a structure is, for example, when one of the operating screw portion and the brake screw portion is a spiral groove portion (female screw portion) and the other is a spiral protrusion portion (male screw portion), and the release end of the spiral groove portion. The wall portion is formed perpendicular to the spiral direction in the groove portion, and the release-side termination portion of the spiral protrusion is the end surface formed perpendicular to the spiral direction. Although it can be set as the structure where the above relative rotation is blocked | prevented, it is not restricted to this.

  For example, in the case where the second member has an operation portion of the insertion slide portion at the tip portion, the release-side end portion of the brake screw portion in the brake piece externally fitted to the operation portion is the engagement insertion slide portion of the brake screw portion. It can be located on the distal side, but can also be on the proximal side.

  (9) The release-side end portion of the brake thread portion is located upstream of the notch portion in the circumferential direction of the brake piece. That is, the side toward the release end of the brake screw is the upstream side, and the release end of the brake screw is upstream of the notch in the circumferential direction of the brake piece (the circumferential direction when viewed from the notch). It is located in the half on the upstream side in the case of bisection. Preferably, it is a position (more preferably a position of 1/3 or less) of one half or less of the upstream side of the notch (the side closer to the notch when the upstream side is divided in half).

  As a result, the second member is further rotated relative to the first member in the other direction from the state in which the release-side end portion of the brake screw portion and the release-side end portion of the actuating screw portion are in contact with each other in the rotation direction. When the movement is attempted, the relative rotation of the brake piece with respect to the first member is prevented from being hindered, so that the second member is prevented from rotating relative to the first member in the other direction. It is prevented from being suppressed.

A 1st member A1 Connection hole B 2nd member B1 Insertion slide part B2 Actuation part B3 Actuation screw part B4 Frustum-shaped outer peripheral surface part B5 Cage part BP Actuation screw part BQ Release side terminal part BR Arrow BS Arrow BX Release-side termination part BY C-shaped part C Brake piece C1 Notch part C2 Brake thread part CP Brake thread part CQ Release-side termination part CR Arrow CS Arrow CX Release-side termination part

Claims (4)

A first member having a connecting hole along a linear axis;
A second member having an insertion slide portion along a linear axis and having an ability to slide in the axial direction with respect to the connection hole portion in a state of being inserted into the connection hole portion;
A coupling body having a notched annular brake piece that is partially cut off in the circumferential direction and can elastically expand and contract in a substantially radial direction,
The slide insertion portion of the second member has an operating screw portion on the outer peripheral side, and includes an operating portion in which the radial dimension of the outer peripheral portion varies depending on the axial position,
The brake piece has a brake thread portion on the inner peripheral side,
The brake piece is externally fitted to the operating portion, and the operating screw portion and the brake screw portion are screwed together, so that the brake piece and the fitting insertion slide portion of the second member rotate relatively around the axis. As a result, the relative axial position of the brake piece with respect to the operating part can change,
Since the radial dimension of the outer peripheral portion of the operating portion varies depending on the axial position, the brake piece is positioned at a predetermined position in the axial direction with respect to the operating portion, so that the outer peripheral portion of the brake piece becomes the inner periphery of the connecting hole portion. When the brake piece is positioned at a position other than the predetermined position in the axial direction with respect to the operating portion, the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released. And
In a state where the pressure contact of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connecting hole portion is released, at least a part of the outer peripheral portion of the brake piece can be in contact with the inner peripheral portion of the connecting hole portion of the first member, In contrast, by rotating the second member relative to one direction, at least a part of the outer peripheral portion of the brake piece is in contact with the inner peripheral portion of the connecting hole portion of the first member, thereby preventing or suppressing rotation with respect to the first member. The fitting slide portion of the second member is rotated relative to the brake piece in the same direction, and the brake piece is moved relative to the predetermined position with respect to the operating portion to connect the outer periphery of the brake piece. Can be in pressure contact with the inner periphery of the hole,
In the state where the brake piece is positioned at the predetermined position with respect to the operating portion and the outer peripheral portion of the brake piece is in pressure contact with the inner peripheral portion of the connecting hole portion, the one direction of the second member with respect to the first member is By rotating relative to the other direction, which is the opposite direction, the fitting slide portion of the second member is also rotated relative to the brake piece in the other direction, so that the brake piece is moved from a predetermined position relative to the operating portion. It can be moved relatively, and the pressure contact state of the outer peripheral part of the brake piece with respect to the inner peripheral part of the connecting hole part can be released,
The operating screw portion and the brake screw portion are in a direction in which the fitting insertion slide portion of the second member with respect to the brake piece is released from the pressure contact state of the outer peripheral portion of the brake piece with respect to the inner peripheral portion of the connection hole portion. If the relative rotation continues in the other direction, the release-side end portion of the operating screw portion and the release-side end portion of the brake screw portion come into contact with the direction of rotation, and further relative rotation is prevented. Has a structure,
The release-side end of the brake thread is located upstream of the notch in the circumferential direction of the brake piece,
From the state in which the release-side end portion of the brake screw portion and the release-side end portion of the actuating screw portion are in contact with each other in the rotation direction, the second member is further rotated relative to the first member in the other direction. In this case, it is possible to prevent the relative rotation of the brake piece with respect to the first member from being hindered.   The connecting body according to claim 1, wherein the release-side end portion of the brake screw portion is located at a position that is less than or equal to one-half of the upstream side of the notch portion in the circumferential direction of the brake piece. The operating part has a bulging part whose outer peripheral part bulges and a non-bulging part which does not bulge,
When the brake piece is located at the bulging part of the operating part, the outer peripheral part of the brake piece can be pressed against the inner peripheral part of the connecting hole part,
The connecting body according to claim 1 or 2, wherein the outer peripheral portion of the brake piece positioned at the non-bulged portion of the operating portion cannot be pressed against the inner peripheral portion of the connecting hole portion.   4. The coupling body according to claim 3, wherein an outer peripheral portion of the operating portion extending from the non-bulged portion to the bulging portion or a part thereof gradually bulges in one axial direction.