JP2014009568A - Slide lock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a slide lock device in which force for holding a holder against a guide member is maintained and improved.SOLUTION: An operation member 23 is provided vertically in a holder H. When doing a push-in operation against a return spring 25, a lever 33 oscillates and a lock member 28 retreats to a release position from a press-contact position against a guide member G. The lock member 28 is guided to move in a horizontal direction through fitting a guide part 35 to a guided part 36. Therefore, a pressing face 32 of the lock member 28 can be parallelly moved while keeping vertical attitude, so that the entire surface of the pressing face 32 can be pressed against the guide member G without partially contacting the guide member G.

Description

  The present invention relates to a slide lock device used for height adjustment of a holder for holding a shower head, for example.

  Conventionally, the following patent document 1 is known as this kind of slide lock device. Patent Document 1 discloses a holder (shower hook) that can slide along a guide member attached to a wall surface of a bathroom. The holder has a lock lever that can be gripped. A contact lock portion that contacts the outer periphery of the guide member is provided at the tip of the lock lever. Under normal conditions, the contact lock portion is strongly pressed against the outer peripheral surface of the guide member by a torsion spring provided on the rotation shaft of the lock lever so that the holder is held at a desired height position of the guide member. It has become. On the other hand, when the lock lever is gripped against the torsion spring, the abutment lock part is separated from the outer peripheral surface of the guide member, and the holder is slidable along the guide member.

Japanese Patent Laid-Open No. 9-158273

  In the above, the pivot shaft of the lock lever is provided at a height position (near the tip) in the middle of the lock lever, so that the lock lever swings like a seesaw. Therefore, the contact lock portion attached to the tip of the lock lever swings in an arcuate locus, so that the entire surface of the contact lock is not pressed against the guide member. Only a part of the situation was hit. For this reason, the abutting lock portion may not have a sufficient pressing area against the guide member and may not have a sufficient holding force. Moreover, when used over a long period of time, only the tip of the abutting lock portion was worn away, and there was a concern that the holding force would further decrease with time.

  The present invention has been completed based on the above circumstances, and an object thereof is to provide a slide lock device capable of maintaining and improving the holding force.

The slide lock device of the present invention is a slide lock device that locks a holder slidable along the longitudinal direction of the guide member at an arbitrary position of the guide member,
An operation member attached to the holder;
A biasing member incorporated in the holder and biasing the operating member in the return direction;
It is attached to the holder so as to be displaceable, has a pressing surface on the surface facing the guide member, and normally holds the holder in an arbitrary position of the guide member by pressing the pressing surface against the outer peripheral surface of the guide member, A locking member that releases the holding of the holder with respect to the guide member by separating the pressing surface from the guide member when the operation member is operated,
Between the operation member and the lock member, the displacement direction of the operation member is changed to a direction intersecting the longitudinal direction of the guide member, and the parallel movement is performed while the pressing surface of the lock member is directly opposed to the outer peripheral surface of the guide member. It is characterized in that a direction changing mechanism is interposed.

  When adjusting the holding position of the holder with respect to the guide member, if the operation member is operated against the biasing member, the displacement direction of the operation member is changed by the direction changing member, so that the lock member guides the pressing surface. The guide member is separated from the member while facing the member. Accordingly, the holder can freely slide with respect to the guide member, and the holder can be moved to a desired height position along the guide member. When the operation on the operating member is released at this position, the operating member is returned to the original position by the biasing member. Along with this, the direction of the locking member is changed by the direction changing member in the direction approaching the guide member while the pressing surface faces the guide member. As a result, the pressing surface of the lock member remains in the facing state. Pressed against. Therefore, a large pressing area against the guide member can be ensured, and the holding force can be improved. In addition, since the pressing surface does not come into contact with the guide member, even if the pressing surface is used for a long period of time, it is difficult for the piece to wear, and the holding force can be maintained for a long time.

The perspective view which shows the holder attached to the guide member in Example 1. Exploded perspective view of holder Front sectional view showing a state before the operation member is operated Front sectional view showing a state after operation of the operation member AA line sectional view of FIG. Front sectional view of holder in Example 2

A preferred embodiment of the present invention will be described.
The direction changing mechanism has a guide part provided on one of the holder and the lock member and a guided part provided on the other side, and the guide part is slid on the guide part to lock the lock member. A guide surface for guiding the pressing surface to move in parallel may be formed.
According to such a configuration, since the guided portion is guided by the guide surface of the guide portion for the parallel movement of the pressing surface, the reliability of the operation of the lock member is improved.

Further, the direction changing mechanism has a lever supported so as to be swingable about the rotation axis with respect to the holder,
A first engagement portion that engages with the operation member is formed on one end side of the lever, a second engagement portion that engages with the lock member is formed on the other end side of the lever with the rotation shaft interposed therebetween, and The distance between the rotation shaft and the first engagement portion may be longer than the distance between the rotation shaft and the second engagement portion.
According to such a configuration, since the lever functions as a booster mechanism, the operating force of the operating member when adjusting the position of the holder can be reduced.

<Example 1>
FIG. 1 shows the attached state of the shower head holder. The holder H is attached so as to be movable up and down along a columnar guide member G fixed vertically on the wall surface of the bathtub. The shower head S is connected to one end of the hose HO via the connection fitting 3. As shown in FIG. 3, the connection fitting 3 is formed in a tapered shape whose diameter increases toward the upper end side, so that when the shower head S is inserted into the shower hook 1, it does not fall downward. be able to. The configuration of the shower hook 1 will be described later again.

  FIG. 2 shows the components of the holder H. The holder H has a pair of holder cases 2 made of synthetic resin. Each outer surface side is covered with a decorative cover 4. Both holder cases 2 are abutted in alignment from the horizontal direction, and are combined as a holder H by screwing a plurality of locations.

  A cylindrical holding recess 5 is formed at one end of the combined holder H, and a guide member G is inserted into the holding recess 5 as shown in FIG. An inner peripheral surface of the holding recess 5 surrounds the guide member G and is a sliding surface 6 that slides along the longitudinal direction of the guide member G. Although not shown in detail, the sliding surface 6 is provided with a plurality of protrusions that protrude vertically and radially inward at substantially equal angular intervals, and guides the tips of the protrusions. The sliding resistance is reduced by contacting the outer peripheral surface of the member G.

  As shown in FIG. 1, a shower hook mounting portion 7 for holding the shower head S is provided on the other end side of the holder H. The shower hook mounting portion 7 has a U shape in plan view. As shown in FIG. 2, the shower hook 1 attached to the shower hook mounting portion 7 is integrally formed from a pair of disc portions 1A and a connecting portion 1B that connects both disc portions 1A. It has the shape of The front end sides of the opposing surfaces of both disc portions 1A are thick and have a narrow opening width so that the shower head S does not come out of the shower hook 1 forward.

  In the first embodiment, the shower hook 1 can be freely adjusted with respect to the holder H so that the holding angle of the shower head S can be adjusted in the vertical plane.

  That is, as shown in FIG. 2, a cylindrical support shaft portion 8 protrudes outward in the horizontal direction at the center portion of the outer surface of both disc portions 1A, and a support recess 9 is formed on the wall surface 7A of the shower hook mounting portion 7. Is recessed and the support shaft portion 8 is rotatably inserted. As shown in FIG. 3, a fan-shaped inner regulating portion 10 projects outward in the radial direction over a predetermined angle range on the outer peripheral surface of the support shaft portion 8. Correspondingly, the outer peripheral surface of the support recess 9 is expanded radially outward over a predetermined angle range to form an inner regulation recess 11. The inner regulation recess 11 is formed with a wider angle range than the inner regulation part 10. The shower hook 1 can be rotated over an angular range until the end surfaces of the inner regulating portion 10 and the inner regulating recess 11 come into contact with each other.

  Moreover, as shown in FIG. 2, it is the outer surface of both disc part 1A of the shower hook 1, Comprising: The outer side control part 12 formed in the pin shaft shape between the support shaft part 8 and the outer peripheral surface of the connection part 1B. Is protruding.

  On the other hand, on the wall surface of the shower hook mounting portion 7, an outer restriction recess 13 is formed at a position corresponding to the outer restriction portion 12. The outer regulating recess 13 is formed in an arc shape over a predetermined angle range, and the tip of the outer regulating portion 12 is slidably inserted. In the first embodiment, when the end surfaces of the inner restricting portion 10 and the inner restricting recess 11 are in contact with each other, the end surfaces of the outer restricting portion 12 and the outer restricting recess 13 are also in contact with each other at the same time. Thus, the shower hook 1 can rotate with respect to the shower hook mounting portion 7 over a predetermined angle range.

  As shown in FIG. 3 and the like, the outer surface of the connecting portion 1B in the shower hook 1 has an arc shape, and a plurality of meshing teeth 14 are provided on the same surface along the circumferential direction. It is formed over the entire width. On the other hand, a base 15 in the form of a block is projected near the center of the inner surface of both holder cases 2, and when combined as a holder H, the bases 15 are abutted in a positioned state. In the butted state of the base portions 15, a relief surface 16 for the shower hook 1 is formed on the side surface facing the shower hook 1. The escape surface 16 is formed in an arc shape that can be adapted to the outer peripheral surface shape of the connecting portion 1B of the shower hook 1, and a storage chamber that opens toward the shower hook mounting portion 7 side in the center in the height direction. A recess 17 is formed, and a stopper 18 for holding the shower hook 1 at a desired angular position is movably accommodated therein.

  In the stopper 18, three claw edges 19 shown in the figure protrude in the height direction on the surface of the shower hook 1 facing the connecting portion 1 </ b> B, and can selectively engage with the meshing teeth 14 of the shower hook 1. A spring 20 is disposed on the back side of the stopper 18 in the storage chamber 17. The spring 20 is arranged so that its axis is directed toward the rotation axis of the shower hook 1 and biases the stopper 18 in a direction to press the shower hook 1 against the shower hook 1. The stopper 18 is allowed to move backward so that the meshing position with the claw edge 19 can be changed, and after the meshing position is changed, the meshing teeth 14 of the shower hook 1 and the claw edge 19 are urged to engage with each other.

As shown in FIG. 2, guide ribs 21 are formed on both side surfaces of the stopper 18 so as to protrude in the horizontal direction. On the other hand, a guide groove 22 into which the guide rib 21 is slidably fitted is formed on the side surface of the storage chamber 17 so as to be recessed in parallel with the axis of the spring 20. By fitting the guide rib 21 and the guide groove 22, the stopper 18 is guided in the approach or separation direction along the radial direction of the shower hook 1, and thus the meshing position between the meshing tooth 14 and the claw edge 19 is sequentially changed. Can be changed.
As shown in FIG. 3, a rubber anti-slip 43 is attached to the inner surface of the connecting portion 1 </ b> B in the shower hook 1.

  Next, a configuration for holding the holder H at a desired height position of the guide member G will be described.

  A central portion in the holder H and adjacent to the base portion 15 is an accommodation space 24 for accommodating the operation member 23. The accommodation space 24 is a space opened downward and on the side facing the holding recess 5. The operation member 23 is formed in an oval shape that is long in the dividing direction of the holder H, is accommodated vertically with respect to the accommodation space 24, and has a lower end protruding from the holder H, and is moved in the vertical direction that is the moving direction of the holder H. It can be pushed or returned.

  Between the center of the upper surface of the operation member 23 and the ceiling surface 2A of the holder H, a return spring 25 (biasing member) is provided in the vertical direction, and the operation member 23 is urged downward (return direction). doing. A pair of guide protrusions 26 protrude horizontally on both side surfaces of the operation member 23 facing in the long axis direction (direction orthogonal to the paper surface in FIG. 3), and vertically and in the thickness direction at the corresponding positions of both holder cases 2. It is slidably fitted into a guide slit 27 formed so as to penetrate through. The operation member 23 is slidably fitted with a guide projection 26 and a guide slit 27 to guide the movement of the operation member 23 and prevent the holder H from coming off downward.

  As shown in FIG. 3, in the holder H, a lock member 28 is incorporated between the base 15 and the holding recess 5. The lock member 28 is sandwiched from above and below by the ceiling surface 2 </ b> A of the holder H and the receiving surface 2 </ b> B formed between the accommodation space 24 and the holding recess 5 on the lower surface of the holder H.

  The lock member 28 has a base portion 29 formed in a block shape. The base 29 is formed at a height lower than the distance between the receiving surface 2B and the ceiling surface 2A of the holder H, but the surface of the base 29 that faces the guide member G is extended upward to extend the extension wall 30. Is formed. A space behind the extension wall 30 is an escape space that avoids interference with a connecting piece 33B of a lever 33 described later.

  The extension wall 30 is formed with a height dimension such that the upper end thereof reaches the ceiling surface 2A of the holder H. A surface of the lock member 28 facing the guide member G is formed in an arc shape that matches the curvature of the outer peripheral surface of the guide member G including the extension wall 30. Further, a pressing member 31 is assembled to almost the entire surface of the base portion 29 facing the guide member G. The front surface of the pressing member 31 protrudes slightly forward from the front surface of the lock member 28, and constitutes a pressing surface 32 for the guide member G. The pressing surface 32 is an arc surface having the same curvature as the surrounding surface of the lock member 28, and extends along the outer peripheral surface of the guide member G when the operation member 23 is in the normal position (position shown in FIG. 3). Pushing is possible.

  Next, the direction changing mechanism D that converts the upper and lower operation directions of the operation member 23 into horizontal displacements of the lock member 28 will be described.

  The direction changing mechanism D includes a lever 33 interposed between the lock member 28 and the operation member 23, and a guide portion 35 and a guided portion 36 provided between the lock member 28 and the holder H. Has been.

  As shown in FIG. 2, the lever 33 includes a pair of lever pieces 33A and a connecting piece 33B that connects the lever pieces 33A. A rotating shaft 34 protrudes outward at a position near the lock member 28 on the outer surfaces of both lever pieces 33A. On the other hand, a receiving hole 37 into which the rotation shaft 34 is inserted is opened at a corresponding position on the side wall surfaces of both holder cases 2, whereby the lever 33 is supported in the holder H so as to be swingable around the rotation shaft 34. The In addition, a first engagement portion 38 having a groove shape that opens to the peripheral side is formed at an end portion of the outer surface of both lever pieces 33A far from the rotation shaft 34. The first engagement portions 38 can be engaged with a pair of first engagement shaft portions 39 formed to protrude from the outer surfaces near the upper ends on both side surfaces on the long axis direction side of the operation member 23.

  Further, a second engagement portion 40 is formed at an end portion of the outer surface of both lever pieces 33 </ b> A on the side closer to the rotation shaft 34. The second engagement portion 40 is engageable with a pair of second engagement shaft portions 41 that protrude from both side surfaces of the base portion 29 of the lock member 28 and close to the upper end. Further, the distance from the first engagement portion 38 (more precisely, the axis of the first engagement portion 38) to the axis of the rotation shaft 34 is the second engagement portion 40 (more precisely, the second engagement shaft). It is set longer than the distance to the axis 41 of the portion 41.

  Thus, when the operation member 23 is pushed upward, the operation force applied to the operation member 23 is transmitted to the lock member 28 by receiving a boosting action by the lever 33.

  As shown in FIG. 3, a pair of guided portions 36 project from the inner surface of the holder H and the surface facing the lock member 28. The guided portion 36 is formed in a square shape that is formed slightly longer in the horizontal direction. On the other hand, a pair of guide portions 35 are provided corresponding to the guided portions 36 at the lower ends of both side surfaces of the base portion 29 of the lock member 28. The guide portion 35 is formed in a frame shape that opens toward the operation member 23 side and extends in the horizontal direction, and the upper side and the lower side thereof are guide surfaces 42. The guided portion 36 is sandwiched from above and below by both guide surfaces 42 and is slidable along the horizontal direction.

  Next, the function and effect of the first embodiment configured as described above will be described. In a normal time before the operation member 23 is pushed in, the operation member 23 is held in a position where it is pushed down by the spring force of the return spring 25 as shown in FIG. Accordingly, due to the locking of the first engagement shaft portion 39 and the first engagement portion 38, the counterclockwise torque shown in the drawing acts on the lever 33 around the rotation shaft 34. Accordingly, a horizontal force toward the guide member G is generated on the lock member 28 due to the engagement between the second engagement portion 40 and the second engagement shaft portion 41. This force acts as a pressing force of the pressing surface 32 of the pressing member 31 on the lock member 28 against the outer peripheral surface of the guide member G, so that the holder is caused by the frictional force between the pressing surface 32 and the outer peripheral surface of the guide member G. The entire H can be held at a predetermined position of the guide member G.

  When adjusting the holding position of the holder H, the operating member 23 is pushed in against the spring force of the return spring 25 as shown in FIG. Then, since the lever 33 rotates about the rotation shaft 34 in the clockwise direction in the drawing, the lock member 28 is separated from the guide member G by the engagement between the second engagement portion 40 and the second engagement shaft portion 41. Receive direction force. That is, at this time, both guided portions 36 on the holder H side and the guide portion 35 on the lock member 28 side are fitted together, and both guide surfaces are moved while the guide portion 35 and the guided portion 36 slide relative to each other. Since the guide member 42 receives the guide action, the lock member 28 is guided to move in the horizontal direction. Thus, the upward displacement of the operation member 23 is converted into the displacement of the lock member 28 in the horizontal direction.

  As a result, the pressing state of the lock member 28 against the guide member G is released. Therefore, if the holder H is moved up and down along the guide member G while the operation member 23 is being pushed in, the height of the holder H is desired. Can be moved to a position. When the pushing of the operating member 23 is released at this height position, the operating member 23 returns to the original position by the spring force of the return spring 25. Accordingly, the lever 33 rotates about the rotation shaft 34 counterclockwise in the figure, so that the lock member 28 moves horizontally toward the guide member G. That is, the lock member 28 translates the pressing surface 32 in the vertical direction, that is, in a posture facing the guide member G, and presses against the guide member G as it is. At this time, since the entire area of the pressing surface 32 is in pressure contact with the outer peripheral surface of the guide member G, the lock member 28 has a large pressing area against the guide member G, and the holding state of the holder H can be stabilized. it can.

  Further, in the first embodiment, when the displacement of the lock member 28 moves between the press contact position shown in FIG. 3 and the adjustment position shown in FIG. 4, the guide function through the fitting between the guide portion 35 and the guided portion 36 is performed. Thus, the pressing surface 32 is moved in parallel while being held vertically, so that the above-described one-side contact state is avoided, so that one-side wear with time can also be avoided. In particular, when the guide portion 35 is provided so as to be orthogonal to the guide member G as in the present embodiment, the force that presses the guide member G by the pressing surface 32 does not escape, so that the fixing is made stronger. be able to.

  Further, the lever 33 can convert the upper and lower operation directions of the operation member 23 into the horizontal displacement of the lock member 28, and the operation force of the operation member 23 is through a boosting action using this principle. Since the signal is transmitted to the lock member 28, the lock member 28 can be pressed and released with a light operating force.

  In the first embodiment, the following effects can also be achieved. If the operating member 23 is assembled sideways with respect to the holder H and the lock member 28 is directly moved horizontally by a horizontal operation, the direction changing mechanism need not be used. However, when the operation member 23 is assembled sideways with respect to the holder H, the operation member 23 protrudes outward in the horizontal direction from the holder H, and the entire apparatus is enlarged in the width direction. In that respect, if the direction changing mechanism D is provided as in the present embodiment, the operation member 23 can be assembled vertically, so that the holder H can be configured compactly in the width direction.

  In the first embodiment, the extension wall 30 is provided at the upper end of the lock member 28 to prevent water and foreign matter from entering, but the area where the pressing surface 32 is formed extends to the extension wall 30 having low strength. In addition, since it is set within the range of the front region of the base 29 formed in a block shape, the lock member 28 is not deformed by a reaction force accompanying the pressure contact.

<Example 2>
FIG. 6 shows a second embodiment of the present invention. In the figure, the configuration of the second embodiment is simplified. The basic configuration of the holder case 2 and the operation member 23 is the same as that of the first embodiment. The second embodiment is different from the first embodiment in that the lever 50 does not have a boosting function and that the lock member 51 moves obliquely in the vertical direction while keeping the pressing surface 52 in the vertical plane. ing.

  Specifically, guided portions 53 are projected from both front and back side surfaces of the lock member 51 in the drawing. Both guided portions 53 have a height that covers the entire height range of the lock member 51, and are obliquely formed at the upper end of the lock member 51 and from the corner near the guide member G to the lower end center. On the other hand, a guide portion 54 into which the guided portion 53 is slidably fitted is formed in a groove shape at a corresponding position on the inner wall surface of the holder H. The guide portion 54 is formed to be obliquely recessed with the same gradient as that of the guided portion 53, and a guide surface 55 that slidably guides the guided portion 53 is formed on a groove wall facing the long side.

  The lever 50 is provided with a rotation shaft 56 at the center in the length direction, and the distance between the rotation shaft 56 and the first engagement shaft portion 57 and the rotation shaft 56 and the second engagement shaft portion 58. The distance between and is set to be approximately equal.

  According to the second embodiment configured as described above, the lever 50 is in the posture shown by the solid line in FIG. 6 before the operation member 23 is operated, and the pressing surface 52 of the lock member 51 is pressed. The whole can be pressed against the outer peripheral surface of the guide member G. When adjusting the height position of the holder H, when the operating member 23 is pushed in against the spring force of the return spring 25, the lever 50 rotates about the rotation shaft 34 in the clockwise direction in the figure (the same figure). State indicated by imaginary lines). As a result, the lock member 28 is translated in a direction away from the guide member G when the guided portion 53 is guided by the guide surface 55 of the guide portion 54, so that the pressing surface 52 remains vertical. The guide member G is retracted obliquely downward from the outer peripheral surface. As a result, the holder H can be moved up and down along the guide member G. When the pushing operation of the operation member 23 is released at the desired height position, the lock member 28 is displaced obliquely upward toward the guide member G in the reverse order to the above, and the pressing surface 52 is again guided. The entire holder H can be held in the same position of the guide member G by being brought into pressure contact with the outer peripheral surface of the member G.

  As described above, also in the second embodiment, since the pressing surface 52 of the lock member 51 is displaced while maintaining a vertical state, the entire pressing surface can be pressed against the guide member G. The single wear of the contact surface 52 can be eliminated, and the holder H can be stably held over a long period of time.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the case where the slide lock device is applied to the holder H of the shower head has been shown. However, the present invention is not limited to this, and the present invention is widely used in a mechanism that moves along the guide member and holds it at an arbitrary position. Applicable.

(2) In the above embodiment, the lock member 28 is moved by pushing the operating member 23, but the lock member 28 may be moved by pulling the operating member 23.
(3) In the above embodiment, a lever is used as the direction changing mechanism, but other mechanisms, for example, an operation member and a lock member are connected by a wire, and a pulley is provided in the middle to route the wire. A method of changing the direction to a right angle by a pulley may be used. In that case, it is necessary to tension the wire in a direction in which the pressing surface of the lock member is pressed against the guide member.

23 ... Operating member 25 ... Return spring (biasing member)
28, 51 ... Lock member 32, 52 ... Pressing surface 33, 50 ... Lever 35, 54 ... Guide portion 36, 53 ... Guided portion 42, 55 ... Guide surface 38 ... First engagement portion 40 ... Second engagement Part H ... Holder G ... Guide member D ... Direction changing mechanism

Claims (3)

A slide lock device for locking a holder slidable along the longitudinal direction of the guide member at an arbitrary position of the guide member,
An operating member attached to the holder;
A biasing member incorporated in the holder and biasing the operation member in a return direction;
It is attached to the holder so as to be displaceable, and has a pressing surface on the surface facing the guide member. Normally, the pressing surface is brought into pressure contact with the outer peripheral surface of the guide member, and the holder is attached to any of the guide members. A locking member that holds in position and releases the holding of the holder with respect to the guide member by separating the pressing surface from the guide member when the operation member is operated,
By changing the displacement direction of the operation member to a direction intersecting the longitudinal direction of the guide member between the operation member and the lock member, the pressing surface of the lock member is placed on the guide member. A slide lock device characterized by interposing a direction changing mechanism that moves in parallel while facing the outer peripheral surface.   The direction changing mechanism has a guide portion provided on one of the holder and the lock member, and a guided portion provided on the other side, and the guided portion slides on the guide. The slide lock device according to claim 1, further comprising a guide surface that guides the lock member to move the pressing surface in parallel. The direction changing mechanism has a lever supported so as to be swingable about a rotation axis with respect to the holder,
A first engagement portion that engages with the operation member is formed on one end side of the lever, a second engagement portion that engages with the lock member is formed on the other end side, and the rotation shaft and The distance between the first engaging portion and the first engaging portion is formed longer than the distance between the rotating shaft and the second engaging portion. Slide lock device.

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