JP6712148B2 - Flexible lock unit - Google Patents

Description

According to the present invention, the other pole is inserted into one hollow pole such as a telescopic pole, and one pole is fixed and the other pole is movable, and the other pole is expanded and contracted with respect to one pole. The other pole is inserted into one of the hollow poles, such as the type that slides in the direction or the monitor support stand, and one pole is the movable side, the other pole is the fixed side, and one pole is on the other pole. The present invention relates to a flexible lock unit used for locking one pole and the other pole in a sliding type.

Generally, a drip stand used in a medical institution uses a telescopic pole with a lock unit so that the height of the stand body can be adjusted.
A drip stand of this type has been proposed in Patent Document 1 and the like.
As is clear from Document 1, a telescopic pole of this type includes a lower fixed pole made of a metal pipe, and a metal that is vertically slidably inserted into the fixed pole. A lock unit for locking the telescopic side pole extending from the upper end of the fixed side pole at a predetermined height is composed of an upper side telescopic side pole made of a pipe made of It is provided. This lock unit consists of a screw hole provided near the upper end of the fixed side pole and a bolt with a grip or knob that is screwed into this screw hole. After pulling or pushing down, slide to the required height to adjust the height, then turn the grip or knob to tighten the bolt in the screw hole of the fixed side pole, and use the tip of the bolt to fix the outer peripheral surface of the expandable side pole. It locks when pressed.

JP, 2013-17654, A

However, the above-described conventional lock unit is a screw type, and when adjusting the height or length of the telescopic pole, turn the grip or knob to loosen the bolt to adjust the height or length of the telescopic pole. After adjusting, the grip or knob is turned again to tighten the bolt, so the operation of the lock unit is complicated, and it takes a lot of time to lock and unlock the telescopic pole. There is a problem that it is difficult to say that it is easy to adjust the height or the length.

The present invention solves such a conventional problem, and enables a lock unit of this type to lock and unlock one pole and the other pole reliably and instantaneously by a simple operation. That is the purpose.

In order to achieve the above object, the present invention provides
A type in which the other pole is inserted into one of the hollow poles, the one pole is fixed and the other pole is movable, and the other pole is slid in the expansion/contraction direction with respect to the one pole, Alternatively, a flexible lock used to lock the one pole and the other pole in a form in which the one pole is movable and the other pole is fixed and the one pole is slid on the other pole. A unit,
The overall shape is substantially tubular, and one pole connecting portion into which the one pole can be inserted and connected to the one pole connecting portion, and the other pole inserted into the one pole can be inserted. A housing provided with the other pole insertion portion and an operation member attachment portion having a through hole in an axially intermediate portion of the peripheral surface of the other pole insertion portion;
A pair of annular lock members that are passed through the other pole inserted through the insertion portion in the other pole insertion portion of the housing and that are arranged to face each other on the other pole.
In the other pole insertion portion, it is passed through the other pole that is inserted into the insertion portion, is arranged outside the annular lock members on the other pole, and the surface on the annular lock member side is slanted. A pair of cylindrical pressing members formed on the both sides to form a substantially C-shape and obliquely pressing and guiding each of the annular locking members in a substantially C-shape, and to the operation member attachment portion in the other pole insertion portion. A guide stopper that is disposed and fixed at a position facing each other, a surface facing each of the annular lock members is formed in a substantially C shape obliquely, and a guide stopper that obliquely supports and guides each of the annular lock members in a substantially C shape, and It is arranged on the outside of each of the cylindrical pressing members in the other pole insertion portion, presses each of the cylindrical pressing members toward the inside, and obliquely faces each oblique surface of each cylindrical pressing member and each guide stopper. And a pair of coil springs that press each annular lock member against the other pole in a substantially C-shape, and each annular lock member is substantially closed to the other pole. A pressure lock mechanism that presses diagonally in the shape of
The other pole is inserted through the through hole of the operation member attachment portion of the housing between the operation member attachment portion and the other pole insertion portion, and has an operation button at the end portion on the operation member attachment portion side. At the end on the insertion portion side, there is a wedge-shaped portion that can be pushed open so as to bring the respective annular locking members into substantially parallel or substantially parallel to each other between the annular locking members, and each wedge-shaped portion is formed into an annular shape. An operating member arranged between the lock members so as to be able to move forward and backward between a lock release position where the annular lock members are pushed open so as to be substantially parallel or nearly parallel to each other and a lock position which is pulled away from the lock release position, And a spring member that is interposed between the housing and the operating member and normally holds the operating member in the lock position,
Equipped with
As a normal state, in the other pole insertion portion, the other pole is locked by being pressed into a substantially C shape by each of the annular locking members,
By one-touch pushing operation of the operation button, the wedge-shaped portion pushes and opens between the annular lock members in the other pole insertion portion, and unlocks the other pole.
That is the summary.
In this case, the operation member attachment portion on the outer peripheral surface of the other of the pole insertion end of the housings are formed in a convex shape with a predetermined thickness, through hole substantially in the center of the operating member mounting unit, a coil as a spring member on both sides Grooves for loading springs are formed respectively, and the operation member has an operation button formed in a case shape or a plate shape, and a wedge-shaped portion is formed substantially at the center of the inner surface of the operation button, and convex portions are formed on both sides thereof. The wedge-shaped member is inserted into the through hole, and the protrusions are arranged in the grooves via coil springs and mounted on the operation member attachment portion of the housing. It is preferable.

According to the flexible lock unit of the present invention, with the above configuration, as a normal condition, the other pole in the other pole insertion portion of the housing is pressed into a substantially C shape by the pair of annular lock members pressed by the pressing lock mechanism. Lock, and by pressing the operation button with one touch, the wedge-shaped parts push and open between the annular lock members in the other pole insertion part to unlock the other pole, so a simple device configuration With the simple operation of the flexible lock unit, it is possible to reliably and instantly lock and unlock one pole and the other pole, which is a unique effect of the present invention.

The figure (perspective view) which shows the flexible lock unit in one embodiment of this invention. The figure which shows the structure of each part of the same lock unit ((a) is the figure seen from the operation button side (b) is the figure seen from the end surface (end surface of the shortening side pole insertion part) side of a housing) (c) is the operation button (Side view (d) is a sectional view of (c)) The figure which shows the usage example when the same lock unit is used for a drip stand ((1) is a figure of a lock state of a lock unit, (2) is a figure of a lock release state of a lock unit) The figure which shows the usage example when the same lock unit is used for the up-down slide type monitor support stand The figure which shows the example of use when the same lock unit is used for the support device for a monitor of a horizontal slide type

Next, an embodiment of the present invention will be described with reference to the drawings.
In this flexible lock unit, the other pole is inserted into one of the hollow poles, and one pole is fixed and the other pole is movable, and the other pole is slid in the expansion/contraction direction with respect to one pole. Form, or one pole is movable side, the other pole is fixed side, one pole is slid on the other pole, which is used to lock one pole and the other pole, In addition to the telescopic pole such as the drip stand illustrated in the related art, it can be applied to various things.
Here, this flexible lock unit is exemplified as a lock unit U for a telescopic pole (hereinafter simply referred to as a lock unit U) as one of the specific examples of the former type.

As shown in FIG. 1, the lock unit U is provided at one end of a fixed-side pole P1 and slidably inserted into a fixed-side pole (hollow one pole) P1. This is a type in which a telescopic side pole (the other side pole) P2 extending from one end of P1 is locked at a predetermined height or length, and the overall shape is substantially cylindrical, and the fixed side pole P1 is inserted at one end. A wearable fixed-side pole connecting portion (one pole connecting portion) 11 and a fixed-side pole connecting portion 11 are communicated with each other, and a telescopic side pole P2 can be inserted between the fixed-side pole connecting portion 11 and the other end. The expansion/contraction side pole insertion part (the other pole insertion part) 12 and the operation member attachment part 13 having a through hole 130 (see FIG. 2D) in the axially intermediate part of the peripheral surface of the expansion/contraction side pole insertion part 12. The housing 1 and a pair of annular rings that are passed through the telescopic side pole insertion portion 12 of the housing 1 through the telescopic side pole P2 that is inserted through the insertion portion 12 and that are arranged to face each other on the telescopic side pole P2. The lock member 2 and the pair of annular lock members 2 are attached to the expansion/contraction side pole P2 through the through hole 130 of the operation member attachment portion 13 of the housing 1 and the pressing lock mechanism 3 that obliquely presses the expansion/contraction pole P2 in a substantially V-shape. The operation button 40 is inserted between the portion 13 and the expansion/contraction side pole insertion portion 12 and has an operation button 40 at the end on the operation member mounting portion 13 side, and between the annular lock members 2 at the end on the expansion/contraction side pole insertion portion 12 side. Has a wedge-shaped portion 41 (see FIG. 2(d)) capable of pushing and opening each annular locking member 2 so as to be substantially parallel or nearly parallel to each other. An operating member 4 which is inserted between the lock members and pushes the respective annular lock members 2 substantially in parallel or close to each other so as to move forward and backward between a lock release position and a lock position pulled away from the lock release position, and The spring member 5 is interposed between the housing 1 and the operating member 4 and normally holds the operating member 4 in the lock position (see FIG. 2D).

As shown in FIG. 2, the entire housing 1 is formed in a substantially cylindrical shape. The fixed side pole connecting portion 11 is formed into a bottomed cylindrical shape so that the fixed side pole P1 can be inserted from one end surface of the housing 1 and one end of the housing 1 is opened at one end surface of the housing 1. The telescopic side pole insertion part 12 is formed in a cylindrical shape between the fixed side pole connecting part 11 and the other end of the housing 1 and has an inner diameter larger than that of the fixed side pole connecting part 11. An opening 120 through which the expansion/contraction side pole P2 can be inserted is provided on the surface (bottom portion) and the other end surface of the housing 1. In this case, a spring receiver 121 is provided around the opening 120 on the surface of the bottom of the fixed side pole connecting portion 11 on the side of the telescopic side pole insertion portion 12 side. The other end surface of the housing 1 is opened larger than the outer diameter of the expansion/contraction side pole P2, and a ring member 122 having an opening 120 through which the expansion/contraction side pole P2 can be inserted is attached to the expansion/contraction side. An opening 120 through which the pole P2 can be inserted is formed. A spring bearing 121 is provided around the opening 120 on the surface of the ring member 122 on the side of the telescopic side pole insertion portion 12 side.

As shown in FIG. 2D, the press lock mechanism 3 is inserted into the expansion/contraction side pole insertion part 12 through the expansion/contraction side pole P2 inserted through the insertion part 12, so that each of the expansion/contraction side poles P2 is moved. The annular lock members 2 are arranged outside the annular lock member 2, and the surfaces 311 on the respective annular lock member 2 sides are formed obliquely (diagonally downward) so that both surfaces 311 have a substantially C-shape. A pair of cylindrical pressing members 31 that are obliquely pressed and guided, and both surfaces 321 that are arranged and fixed in the telescopic side pole insertion portion 12 at positions facing the operation member attachment portion 13 and that face each annular lock member 2 are substantially closed. A guide stopper 32 that is formed diagonally in the shape of an arrow and that supports and guides each annular lock member 2 in an approximately C-shape at an angle, and is disposed outside each tubular pressing member 31 within the telescopic side pole insertion portion 12. Each tubular pressing member 31 is pressed inward, and each annular locking member 2 is extended between the slanted surface 311 of each tubular pressing member 31 and each slanted surface 321 of the guide stopper 32 on the telescopic side pole. It has a pair of coil springs 33 pressed against P2 in a substantially C-shape.
Here, each annular locking member 2 is made of a substantially oval member, and has a hole 20 at the center thereof having an inner diameter slightly larger than the outer diameter of the telescopic pole P2. A small hole is also provided around the hole 20 of each annular lock member 2, in this case, in a vertically symmetrical position.
Each tubular pressing member 31 is a substantially tubular member having an oval cross-section corresponding to the shape of each annular lock member 2, and has an inner diameter slightly larger than the outer diameter of the expansion/contraction side pole P2 at its axis. One end surface 311 of each of the cylindrical pressing members 31 facing each other is formed obliquely downward at a predetermined angle with respect to the shaft center, and the other end surface 312 is formed substantially at right angles to the shaft center. Then, the spring receiver 313 is provided. Around the hole 30 of the one end face 311 of each tubular pressing member 31, in this case, vertically symmetrical positions, projections that can engage with each hole of each annular locking member are also provided. Each annular lock member 2 is fitted to one end surface 311 of each tubular pressing member 31, and each projection of each tubular pressing member 31 is fitted into each hole of each annular locking member 2 to form each tubular pressing member. Each annular lock member 2 is attached to the one end surface 311 of the ring member 31 while being prevented from rotating.
The guide stopper 32 is formed in a convex shape having a substantially trapezoidal cross section at a position facing the operation member mounting portion 13 on the inner peripheral surface of the telescopic side pole insertion portion 12, and each surface 321 facing each annular lock member 2 is substantially H-shaped. It presents a slanted surface with a V shape.
One of the pair of coil springs 33 is wound around one end of the telescopic pole P2, one end is fixed to the spring receiver 121 at the bottom of the fixed side pole connecting portion 11, and the other end is one cylindrical pressing member 31 or the like. It is fixed to the spring bearing 313 of the end surface 312, the other end is wound around the other end of the telescopic side pole P2, and one end is the other end of the telescopic side pole insertion portion 12, in this case, the spring bearing 121 around the ring member 122. And the other end is fixed to the spring receiver 313 of the other end surface 312 of the other tubular pressing member 31.

As shown in FIG. 2, the operation member mounting portion 13 is formed in a substantially rectangular parallelepiped convex shape with a predetermined thickness on the outer peripheral surface of the telescopic side pole insertion portion 12 of the housing 1, and is formed substantially at the center of the operation member mounting portion 13. A through hole 130, a groove 131 for loading a coil spring as the spring member 5 on both sides thereof, and guide slits 132 into which flat plate-like guide pieces 43 can be inserted are formed on both sides thereof.
The operation member 4 is formed in a case-like or plate-like shape in which the operation button 40 is slightly larger than the operation member attaching portion 13 along the peripheral surface of the housing 1 and has a rectangular arc shape in a plan view, and the center of the inner surface of the operation button 40. The wedge-shaped portion 41, the convex portions 42 on both sides of the wedge-shaped portion 41, and the plate-shaped guide pieces 43 on both sides of the wedge-shaped portion 41 project from the wedge-shaped portion 41. At the same time, each convex portion 42 is arranged in each groove 131 of the operation member mounting portion 13 via the coil spring 5, and each guide piece 43 is inserted into each guide slit 132 of the operation member mounting portion 13 so that the housing 1 It is mounted on the operation member mounting portion 13.

In this way, the lock unit U is configured, and as a normal state, the telescopic side pole P2 is pressure-contacted and locked by the respective annular locking members 2 in a substantially C shape, and the telescopic side pole is pressed by one-touch operation of the operation button 40. In the insertion portion 12, the wedge-shaped portion 41 pushes and opens between the annular lock members 2 to unlock the pole P2 on the telescopic side.

FIG. 3 exemplifies a case where the lock unit U is used, for example, in a telescopic pole of a drip stand used in medical institutions. In this case, the operation of the lock unit U, the locking by the lock unit U, the unlocking, and the height adjustment of the drip stand are performed as follows.
In this case, as shown in FIG. 3(1), the lock unit U is provided at the upper end of the fixed side pole P1, and the expandable side pole P2 that extends and contracts from the fixed side pole P1 is in the normal state. As a result, the pair of annular lock members 2 of the lock unit U are pressed into contact with each other in a substantially V-shape, that is, the inner peripheral edge portion of each annular lock member 2 at the high position is located above the pole P2 on the telescopic side, and the inner peripheral edge portion of the low position is at the inner peripheral edge portion. The parts are pressed and locked to the lower portions of the telescopic side poles P2, respectively. As a result, the telescopic side pole P2 cannot be extended or contracted from the fixed side pole P1.
Therefore, first, as shown in FIG. 3B, the operation button 40 of the operation member 4 is manually pushed with one touch. At this time, since the operation button 40 is formed in a case shape or a plate shape having a rectangular arc shape in a plan view and a rectangular shape in a plan view, it is easy to press with the palm of the hand, and the operator can hold the housing 1 of the lock unit while pressing the operation button 40. Then, the pressed state of the operation button 40 can be easily maintained. At this time, the central wedge-shaped portion 41 on the inner surface of the operation button 40 is unlocked from the locked position by the engagement guide between the guide pieces 43 on both sides thereof and the guide slits 132 on both sides of the operation member mounting portion 13. It is securely inserted in the position. As a result, the wedge-shaped portions 41 of the operation member 4 push the gaps between the annular lock members 2 open in the telescopic side pole insertion portion 12 of the housing 1 so that the annular lock members 2 become substantially parallel or nearly parallel to each other. The inner peripheral edge portion of each annular lock member 2 at the high position is separated from the upper portion of the telescopic side pole P2, and the inner peripheral edge portion of the lower position is separated from the lower portion of the telescopic side pole P2. The pole P2 is unlocked. In this state (manually pressing the operation button 40), subsequently, while pulling up or pushing down the telescopic side pole P2 from the upper end of the fixed side pole P1, slide it to the required height to adjust the height. .. Then, after adjusting the height of the telescopic side pole P2, the operation of pressing the operation button 40 is released. That is, the hand is released from the operation button 40. As a result, as shown in FIG. 3A, the operating member 4 is elastically returned by the spring member 5, the wedge-shaped portion 41 of the operating member 4 is retracted from the unlocked position to the locked position, and the press lock mechanism 3 is pressed. By this action, each annular locking member 2 is pressed against the expansion-side pole P2 in a substantially V-shape, that is, the inner peripheral edge portion of each annular locking member 2 at the high position is located above the expansion-side pole P2. The inner peripheral edge portion at the low position is pressed and locked to the lower portion of the telescopic pole P2, and the height of the telescopic ball P2 is fixed to the adjusted height.

As described above, according to the lock unit U, the pair of ring-shaped members is provided with the telescopic side pole P2 in the housing 1 (the telescopic side pole insertion portion 12) provided at one end of the fixed side pole P1 as the normal state. The lock member 2 presses and locks in a substantially V-shape, and the operation button 40 on the circumferential surface of the housing 1 is pushed by one-touch operation, and each wedge-shaped portion 41 is formed in the housing 1 (the telescopic side pole insertion portion 12). Since the space between the annular locking members 2 is pushed open to unlock the telescopic side pole P2, the telescopic pole can be locked and unlocked reliably and instantly by a simple operation of the lock unit U. The height or length of the pole can be easily adjusted.
In addition, in this lock unit U, the press lock mechanism 3 is passed through the telescopic side pole insertion portion 12 through the telescopic side pole P2 that is inserted into the insertion side portion 12, and each annular lock is performed on the telescopic side pole P2. The surface 311 on the side of each annular lock member 2 is disposed obliquely on the outer side of the member 2 and both surfaces 311 have a substantially C shape, and each annular lock member 2 is obliquely pressed and guided in a substantially C shape. A pair of cylindrical pressing members 31 and a pair of cylindrical pressing members 31 are arranged and fixed at positions in the telescopic side pole insertion portion 12 that oppose the operation member attachment portion 13, and a surface 321 that faces each annular lock member 2 is formed in a substantially C-shape diagonally. The guide stoppers 32 for obliquely supporting and guiding the annular lock members 2 in a substantially C-shape, and the tubular stoppers 31 arranged inside the telescopic side pole insertion portion 12 are provided outside the tubular stoppers 31. Are pressed inwardly, and the annular lock members 2 are substantially hindered with respect to the telescopic side pole P2 between the oblique surfaces 311 of the tubular pressing members 31 and the oblique surfaces 321 of the guide stopper 32. Since it is composed of a pair of coil springs 33 that are pressed into a V shape, the telescopic pole P2 can be reliably locked with a simple device configuration.
Further, in this lock unit U, the operation member mounting portion 13 is formed in a substantially rectangular parallelepiped convex shape with a predetermined thickness on the outer peripheral surface of the telescopic side pole insertion portion 12 of the housing 1, and the operation member mounting portion 13 is substantially centered. A through hole 130 and a plurality of grooves 131 for loading a coil spring as spring members 5 are formed on both sides of the through hole 130. The operation member 4 has an operation button 40 formed in a substantially rectangular parallelepiped case or plate shape. A wedge-shaped portion 41 is provided substantially at the center of the inner surface of the operation button 40, and a plurality of convex portions 42 are respectively provided on both sides of the wedge-shaped portion 41 so that the wedge-shaped member 41 is inserted into the through hole 130 and each convex portion 42 is Since it is arranged in each groove 131 via the coil spring 5 and attached to the operation member attachment portion 13 of the housing 1, the operation button 40 can be easily pushed and released, and can be locked with a simple device configuration. The lock can be reliably released.
Furthermore, in this lock unit U, guide slits 132 are formed on both sides of the through hole 130 in the operation member mounting portion 13, and guide pieces 43 are provided on both sides of the wedge-shaped portion 41 on the inner surface of the operation button 40, respectively. Therefore, the wedge-shaped portion 41 is surely inserted from the locked position to the unlocked position by the engagement guide between the guide slit 132 and the guide piece 43, the annular lock members 2 are pushed open, and the pole on the telescopic side is extended. The lock of P2 can be reliably released.

In this lock unit U, the shape of each member can be changed in various ways. Further, each spring member can be variously modified as long as it is functionally similar.
Further, in this embodiment, the lock unit for the telescopic pole is illustrated, but when the telescopic pole is used for each of the columns such as a clothes rack and a coat rack, which includes a pair of columns and a bar spanned between the columns. Also, this lock unit can be similarly used.

In addition, as described above, this flexible lock unit has the other pole inserted into the hollow one pole, with one pole being the movable side and the other pole being the fixed side, with one pole above the other pole. It can also be used to lock one pole and the other pole of the type which is slid by, and a specific example thereof is shown in FIGS. 4 and 5.
FIG. 4 shows a support stand that supports various devices such as a monitor so as to be vertically slidable. The support stand includes one short hollow pole P1 and a long pole P2 inserted into the pole P1, and the short pole P1 is slidable in the vertical direction on the long pole P2. The arm A is attached to the short pole P1 and the monitor M is fixed to the arm A. In this case, the lock unit U is connected to the lower end of the short pole P1 so that the short pole P1 can be locked at an arbitrary height of the long pole P2 by the lock unit U. When changing the height of the monitor M, the short pole P1 may be slid up and down on the long pole P2 while pressing the operation button 40 of the lock unit U.
FIG. 5 shows a supporting device that supports various devices such as the monitor M so as to be slidable in the horizontal direction. This supporting device is composed of a pair of hollow short one poles P1 and a long pole P2 inserted into these poles P1, and each short pole P1 can slide horizontally on the long pole P2. There is. In this case, the arms A are attached to the respective short poles P1, and the monitor M is hung on these arms A. In this case, the lock unit U is provided with one pole connecting portion 11 at both ends, and is connected between the short poles P1 so that the short poles P1 are located at arbitrary positions in the longitudinal direction of the long pole P2 by the lock unit U. It is lockable. When changing the position of the monitor M, it is sufficient to slide each short pole P1 on the long pole P2 in the horizontal direction while pressing the operation button 40 of the lock unit U.

P1 Fixed side pole P2 Telescopic side pole A Arm M Monitor U Telescopic pole lock unit 1 Housing 11 Fixed side pole connection part (one side pole connection part)
12 Telescopic side pole insertion part (other pole insertion part)
Reference Signs List 120 opening 121 spring receiver 122 ring member 13 operation member mounting portion 130 through hole 131 groove 132 guide slit 2 annular lock member 20 hole 21 hole 3 press lock mechanism 30 hole 31 tubular press member 311 surface 311P protrusion 312 surface 313 spring receiver 32 Guide stopper 321 Surface 33 Coil spring 4 Operation member 40 Operation button 41 Wedge-shaped portion 42 Convex portion 43 Guide piece 5 Spring member (coil spring)

Claims (2)

A type in which the other pole is inserted into one of the hollow poles, the one pole is fixed and the other pole is movable, and the other pole is slid in the expansion/contraction direction with respect to the one pole, Alternatively, a flexible lock used to lock the one pole and the other pole in a form in which the one pole is slid on the other pole with the one pole as a movable side and the other pole as a fixed side. A unit,
The overall shape is substantially tubular, and one pole connecting portion into which the one pole can be inserted and connected to the one pole connecting portion, and the other pole inserted into the one pole can be inserted. A housing provided with the other pole insertion portion and an operation member attachment portion having a through hole in an axially intermediate portion of the peripheral surface of the other pole insertion portion;
A pair of annular lock members that are passed through the other pole inserted through the insertion portion in the other pole insertion portion of the housing and that are arranged to face each other on the other pole.
In the other pole insertion portion, it is passed through the other pole that is inserted into the insertion portion, is arranged outside the annular lock members on the other pole, and the surface on the annular lock member side is slanted. A pair of cylindrical pressing members formed on the both sides to form a substantially C-shape and obliquely pressing and guiding each of the annular locking members in a substantially C-shape, and to the operation member attachment portion in the other pole insertion portion. A guide stopper that is disposed and fixed at a position facing each other, a surface facing each of the annular lock members is formed in a substantially C shape obliquely, and a guide stopper that obliquely supports and guides each of the annular lock members in a substantially C shape, and It is arranged on the outside of each of the cylindrical pressing members in the other pole insertion portion, presses each of the cylindrical pressing members toward the inside, and obliquely faces each oblique surface of each cylindrical pressing member and each guide stopper. And a pair of coil springs that press each annular lock member against the other pole in a substantially C-shape, and each annular lock member is substantially closed to the other pole. A pressure lock mechanism that presses diagonally in the shape of
The other pole is inserted through the through hole of the operation member attachment portion of the housing between the operation member attachment portion and the other pole insertion portion, and has an operation button at the end portion on the operation member attachment portion side. At the end on the insertion portion side, there is a wedge-shaped portion that can be pushed open so as to bring the respective annular locking members into substantially parallel or substantially parallel to each other between the annular locking members, and each wedge-shaped portion is formed into an annular shape. An operating member arranged between the lock members so as to be able to move forward and backward between a lock release position where the annular lock members are pushed open so as to be substantially parallel or nearly parallel to each other and a lock position which is pulled away from the lock release position, And a spring member that is interposed between the housing and the operating member and normally holds the operating member in the lock position,
Equipped with
As a normal state, in the other pole insertion portion, the other pole is locked by being pressed into a substantially C shape by each of the annular locking members,
By one-touch pushing operation of the operation button, the wedge-shaped portion pushes and opens between the annular lock members in the other pole insertion portion, and unlocks the other pole.
A flexible lock unit characterized by this. An operation member mounting portion is formed in a convex shape with a predetermined thickness on the outer peripheral surface of the other pole insertion portion of the housing, a through hole is formed substantially in the center of the operation member mounting portion, and coil springs are loaded as spring members on both sides thereof. Grooves for each are formed, the operation member, the operation button is formed in a case-like or plate-like, the wedge-shaped portion substantially in the center of the inner surface of the operation button, the protrusions on both sides thereof are projected, respectively, The wedge-shaped member is inserted into the through hole, and the protrusions are arranged in the grooves via coil springs, and are attached to the operation member attachment portion of the housing. The described flexible lock unit.

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