JP2007069916A - Pallet for erecting and loading rectangular panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pallet for erecting and loading pair glasses capable of facilitating the pair glass loading work as much as possible. <P>SOLUTION: Two L-shaped faces of a loading face 3 and a butting face 4 are arranged on a pallet base 2, and freely fitting and receiving parts 32 and 42 by groove and receiving seat members to freely fit and receive two ridges of pair glasses 7 are arranged thereon. A slide bar 5 is interposed so as to cross the freely fitting and receiving parts 32 and 42. Receiving parts 52 with the matched number and width with those of the freely fitting and receiving parts 32 and 42 are arranged on the slide bar 5 to form a pallet 1 for erecting and loading a panel. After erecting the pair glasses 7 on the two L-shaped faces, and temporarily holding the glasses, the slide bar 5 is allowed to slide in the crossing direction, and the slide bar 5 is locked. Thus, the pair glasses 7 are pressed and held between the freely fitting and receiving parts 32 and 42 and an erection piece of a receiving part 53, and reliably and easily held so as to withstand the conveyance. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a rectangular panel erection stacking pallet used to erectly load rectangular panels such as pair glass and building panels.

  As this kind of pallet, for example, two adjacent sides of the rectangular panel on the two L-shaped surfaces of the mounting surface and the abutting surface can be received and held freely, and the same width or wider than the side of the rectangular panel arranged in parallel in the surface. A receiving and holding portion having a predetermined width by the holding groove, and a panel fall-preventing rope arranged from the upper end of the abutting surface through a corner cap fitted and attached to the rectangular panel to the horizontal rail at the tip of the mounting surface, A rectangular panel is placed upright on the two L-shaped surfaces, and a corner cap is fitted on the rectangular panel, and then a rope from the upper end of the abutting surface is bound to the horizontal rail to prevent its falling. Is known.

Japanese Patent Laid-Open No. 2002-12281

  In this case, by arranging a large number of L-shaped two-side receiving and holding parts in parallel, a large number of rectangular panels such as paired glass can be stacked and conveyed at the same time. However, troubles such as breakage can be surely solved, but on the other hand, for rectangular panel stacking, each rectangular panel is erected on two L-shaped surfaces, and corner caps are fitted on each rectangular panel. As a result of the need for anti-falling measures for each pair of glasses by hooking rope, this anti-falling measure requires time and tends to complicate loading work, and even at the construction site of the transport destination, There is a tendency for the work at the site to be complicated as well, since it is necessary to take out the rectangular panel after releasing the anti-falling measures for each rectangular panel.

  The present invention has been made in view of such circumstances, and the problem to be solved is as simple as possible while maintaining the standing loading of the rectangular panel on the two L-shaped surfaces so that a large number of loading can be performed simultaneously. It is an object of the present invention to provide a rectangular panel standing and loading pallet that can reliably hold a rectangular panel that is erected and prevent its swinging.

  In accordance with the above-described problems, the present invention accepts and temporarily holds a rectangular panel in a loosely-fitting receiving portion arranged in parallel on the two L-shaped surfaces of the mounting surface and the abutting surface, while the loose-fitting receiving portion is By sliding the slide bar arranged so as to traverse in the transverse direction, a rectangular panel temporarily held by the rising wall of the receiving part arranged on the slide bar in the same manner as the loose fitting receiving part is placed on one side of the loose fitting receiving part. The rectangular panel temporarily held on the two L-shaped surfaces is securely held by crimping so as to prevent the rocking thereof. That is, the invention according to claim 1 is mounted. A loose fitting receiving portion having a predetermined width in which two adjacent sides of the rectangular panel are freely fitted and received on the two L-shaped surfaces of the placing surface and the abutting surface, and one of the placing surface and the abutting surface described above. Both sides are provided so as to cross the loose fitting receiving portion and to be slidable in the transverse direction. A rectangular panel having both a parallel number corresponding to the loose fitting receiving portion and a slide bar having a receiving portion of a predetermined width, and the rising wall of the receiving portion being loosely received in the loose fitting receiving portion by sliding of the slide bar By pressing the sides in the sliding direction, the rectangular panel can be stowed and stacked, and the rectangular panel can be freely clamped and clamped to the inner side of the loose fitting receiving portion.

  In addition to the above, the invention described in claim 2 is formed with a groove that serves as a loading guide so that the loose receiving portion on the mounting surface can guide the slide when the rectangular panel is loaded. For example, by pressing and sliding the rectangular panel from the mounting surface toward the abutting surface, the rectangular panel can be easily and reliably stacked on the two L-shaped surfaces. 2. The rectangular panel stand-up stacking pallet according to claim 1, wherein the loose fitting receiving portion of the mounting surface is formed by a groove that also serves as a slide stacking guide for the rectangular panel.

  In addition to the above, the invention according to claim 3 suffices that the loose fitting receiving portion on the abutting surface only needs to loosely accept the rising side of the rectangular panel. In order to form a plurality of partial seats, the loose fitting receiving portion of the abutting surface is formed by partial seats in a plurality of longitudinal directions of the sides that hold the standing sides of the rectangular panel. The rectangular panel stand-up stacking pallet according to claim 1 or 2, characterized in that

  In addition to the above, the invention described in claim 4 is configured such that, if a rectangular panel stacked on two L-shaped surfaces is pressed against the abutting surface, the abutting surface side tip of the rectangular panel is aligned with the sliding direction of the slide bar. In order for the rectangular panel to be easily clamped and clamped so that it is naturally displaced, the loose-fitting receiving portion of the abutment surface formed by the partial seat is in the same direction as the sliding direction of the slide bar. 4. The rectangular panel stand-up loading pallet according to claim 3, further comprising a receiving inclined surface so that the partial receiving seat is inclined and narrowed.

  In addition to the above, the invention described in claim 5 is configured so that the possibility of rocking during transportation can be eliminated by maintaining the crimping sandwiching of the rectangular panel on the two L-shaped surfaces in a fixed state. The pallet for standing and loading a rectangular panel according to claim 1, 2, 3, or 4, wherein the slide bar can be locked at an arbitrary position in the sliding direction.

  Since the present invention is configured as described above, the invention according to claim 1 loosely receives and accepts a rectangular panel by loosely fitting receiving portions arranged in parallel on the two L-shaped surfaces of the mounting surface and the abutting surface, The slide bar arranged so as to cross the loose-fitting receiving part is slid in the transverse direction so that the rectangular panel is crimped and clamped on one side of the loose-fitting receiving part, so that a large number of simultaneous loading can be achieved. Provided is a rectangular panel stand-up stacking pallet that can hold a rectangular panel standing up and as easily as possible while preventing the rocking of the rectangular panel while maintaining upright loading of the rectangular panel on two L-shaped surfaces. be able to.

  In the invention according to claim 2, in addition to the above, the loose fitting receiving portion is formed as a groove that also serves as a loading guide, for example, by pressing and sliding the rectangular panel from the mounting surface toward the abutting surface. The rectangular panel can be easily and reliably stacked on the two L-shaped surfaces.

  In addition to the above, the invention described in claim 3 is that the loose fitting receiving portion of the abutting surface is formed with a plurality of concave portions in the vertical direction of the abutting surface, and the rectangular panel is raised by the loose fitting receiving portion of the abutting surface. It is possible to loosely accept the edges that have been removed.

  In addition to the above, the invention described in claim 4 is configured such that, if a rectangular panel stacked on two L-shaped surfaces is pressed against the abutting surface, the abutting surface side tip of the rectangular panel is aligned with the sliding direction of the slide bar. The rectangular panel can be easily clamped and sandwiched by being displaced naturally.

  In addition to the above, the invention described in claim 5 can eliminate the possibility of rocking during conveyance by maintaining the crimping and clamping of the rectangular panel on the two L-shaped surfaces in a fixed state.

  Hereinafter, the present invention will be described in more detail with reference to the example of the drawings. In the example 1, the rectangular panel is a pair glass 7 in this example, and a plurality of the pair glasses 7 are erected and transported to a construction site, for example. A pair of glass erection pallets to be used, and the pallet 1 has a large number of parallel arrangements in the surface so that two adjacent sides of the glass pair 7 can be freely fitted and received on the two L-shaped surfaces of the mounting surface 3 and the abutting surface 4. The loose fitting receiving portion 32 having a predetermined width and one or both of the placement surface and the three abutting surfaces 4 are provided so as to cross the loose fitting receiving portion 32 and be slidable in the transverse direction, and the loose fitting receiving portion 32. A pair of glass plates 7 having a parallel number corresponding to the above and a slide bar 5 having a receiving portion 52 having a predetermined width, and the rising wall of the receiving portion 52 is loosely received in the loose fitting receiving portion 32 by sliding of the slide bar 5. Press the side of the slide in the sliding direction There as those freely crimp holding of the glazing 7 to the width in the side of the free fitting receiving portion 32 by the.

  In this example, the pallet 1 is placed on the steel pallet base 2 in which rectangular frames are arranged in two upper and lower layers through standing legs, and lift lift claws can be inserted in front of the rectangular frames. The surface 3 and the abutting surface 4 are placed and fixed so as to form an L-shape. At this time, the mounting surface 3 is placed and fixed on the pallet base 2 so as to cover the steel rectangular frame. For example, the abutment surface 4 is formed by a rectangular frame that is erected and fixed to the pallet base 2, and the placement surface 3 in this example is For example, in order to make the front side higher and the abutting surface 4 side lower, the abutting surface 4 is orthogonal to the mounting surface 3 while being inclined downward from the front side toward the abutting surface toward the abutting surface. Tilt it so that it leans to the back side, Ukoto by, there as L-shaped two surfaces inclined to the surface 4 abutting with these mounting surface 3. The inclination in this example is, for example, several degrees, and if the pair glass 7 is pressed against the mounting surface 3 by this, the pair glass 7 is thereby moved into the loose fitting receiving portion 32, in this example. By sliding along a groove serving also as a slide mounting guide described below, it can be easily mounted on the mounting surface 3.

  In this example, the loose fitting receiving portion 32 of the mounting surface 3 described above is formed by a groove that also serves as a slide stacking guide of the pair glass 7, and the loose fitting receiving portion 42 of the abutting surface 4 is This is formed by partial seats at a plurality of positions in the longitudinal direction of the side that holds the standing side of the pair glass 7.

  The loose fitting receiving portion 32 of the mounting surface 3 in the pallet 1 of this example is, for example, a C-shaped channel material or an L-shaped channel material. A large number of L-shaped channel members fixedly arranged 33 are fixed in parallel to the mounting surface 3 to form the same, and the channel members are fixed in parallel on the mounting plate forming the mounting surface 3 from the bottom surface. In this example, each of the standing walls of the L-shaped channel material defines a groove having an upward opening to form a loose-fitting receiving portion 32 by forming the groove. Then, the number of the loose fitting receiving portions 32 arranged in parallel is, for example, around 20 in the width direction of the two inclined L-shaped surfaces, that is, the width direction with respect to the front surface of the mounting surface, and 18 in this example are arranged. As a thing. At this time, the channel members open the front side of the mounting surface 3 as, for example, a footrest space 31 at the time of loading, and are fixed in parallel so as to reach the abutting surface 4 from the intermediate position in the depth direction of the abutting surface 3 from the front surface. For example, the channel material is divided into two, which will be described later, between the end portions of the channel member by using a two-divided one having a long front side in the longitudinal direction and a short abutting side. A space for installation is arranged.

  On the other hand, the loose fitting receiving portion 42 of the abutting surface 4 is, for example, a plurality of partial seats on the abutting surface 4 of the rectangular frame or a horizontal frame installed on the abutting surface 4 in this example, and 3 in this example. This is formed by attaching and fixing about 5 connecting receiving members 41 arranged in parallel in the horizontal direction. At this time, in this example, the loose receiving of the abutting surface 4 formed by the partial receiving members is received. The part 42 is provided with a receiving inclined surface 43 so that the partial seat is inclined and narrowed in the same direction as the sliding direction of the slide bar 5.

  That is, the connection seat member 41 of this example is formed by integrally molding a plurality of partial seats in the width direction by, for example, synthetic resin injection molding. For example, one side is an inclined surface and the other side is a vertical surface in the depth direction. The plurality of partial seats are integrally formed by a concave portion formed by the inclined surface and the bottom surface connecting the vertical surfaces, and the connection seat member 41 is formed by connecting the end portions thereof to each other. The horizontal frame is connected to the horizontal frame in series in the width direction, for example, by fixing the bottom surface of the horizontal frame to the horizontal frame with a screw 44. At this time, the horizontal frame and the connecting seat member 41 are A plurality of rows above and below the abutting surface 4, and in this example, 5 rows are installed in parallel and spaced apart, and the side of the pair glass 7 is received by loose fitting of the partial seats in the joint seat members 41 of the plurality of rows. It is assumed that the part 42 is loosely received.

  In this example, the loose fitting receiving portions 32 and 42 have a groove width when the groove is formed on the mounting surface 3, and an opening width when the seat is formed with a receiving inclined surface 43 on the abutting surface 4. The width of the maximum thickness of the pair glass 7 plus a gasket thickness (not shown) is loosely received, for example, about 4 cm. When the side of the pair glass 7 is received, the pair glass 7 is in a loose-fitting state, and the loose-fitting receiving portion 42 having the inclined surface is formed on the vertical surface side along the receiving inclined surface 43. The pair glass 7 is also in a loose-fitting state as it is pressed by.

  In this example, the slide bar 5 is disposed on both the mounting surface 3 and the abutting surface 4, and is connected to the gap between the two divided channel members on the mounting surface 3. By slidably disposing between the receiving members 41, the slide bar 5 is interposed across the loose fitting receiving portions 32, 42 of the mounting surface 3 and the abutting surface 4. The slide bar 5 does not protrude from the bottom surfaces of the loose fitting receiving portions 32 and 42 of the placement surface 3 and the abutting surface 4 so as not to hinder the reception of the pair glass 7 by the loose fitting receiving portions 32 and 42. It is assumed that short receiving portions 52 corresponding to the number and width of the loose fitting receiving portions 32, 42 are arranged on the formed base material 51. In this example, the receiving portion 52 includes the mounting surface 3 described above. Similarly, a short piece member made of a channel material having a coating layer formed thereon and a cushion material 54 disposed and fixed therein is fastened to the base material 51 by screws 55 in the same manner, so that each standing wall forms a short groove having an upward opening. It is installed to do.

  At this time, the rectangular frame width direction between the both ends in the width direction of the gap for installing the slide bar 5 and the connection receiving member 41 on the abutting surface 4 in which the channel material of the loose fitting receiving portion 32 on the placement surface 3 is divided into two. C-shaped guide members 53 that slidably receive the ends of the slide bar 5 are installed at both ends, and the slide bar has a width that allows the guide member 53 to contact the receiving portion 52 of the slider 5 with the guide member 53. The slide bar 5 is slidably guided and the receiving portion 52 hits to prevent the slide bar 5 from falling off.

  Further, in this example, the slide bar 5 can be locked at an arbitrary position in the sliding direction. In this example, the lock is a rectangular frame of the mounting surface 3 and the abutting surface 5 described above. In this example, the locking device is locked and unlocked by the operation, and the locking device according to the present embodiment places the slide bar 5 by operating the lever handle 64, for example. This is due to the clamping device 6 that presses and supports the rectangular frame of the surface 3 and the abutting surface 4. That is, the clamp device 6 includes a clamp base 61 fixed to the mounting surface 3 or the abutting surface 4, and is pivotally fixed to the clamp base 61 so as to be pivotally supported and connected to the slide bar 5 in series. A head 62 having a pressure contact 63 made of a bolt which can press and hold an upright piece of the receiving portion 52 positioned at the end of the bar 5 and can adjust the protruding length; and the clamp base of the head 62 One end of the lever handle 64 is fixed so that the lever handle 64 is locked in series with the lever support 64 in which the tip of the lever handle 64 is fixed to the shaft support fixing position and the shaft support fixing position of the lever handle 64 with the head 62. A handle lock link plate 65 fixed to the handle 64 and fixed to the clamp base 61 at the other end is provided. Accordingly, in the clamping device 6 of this example, the lever handle 64 is operated after adjusting the protruding length of the pressure contact 63, and the lever handle 64 is inclined so as to be separated from the mounting surface 3 or the abutting surface 4. Then, when the lever handle 64 is rotated to the lock position, the lever handle 64 rotates the head 62 toward the mounting surface 3 or the abutting surface 4 with the shaft fulcrum of the clamp base 61 as the center. And the link plate 65 locks the slide bar 5 in series with the shaft support fixing position of the head 62 and makes the lever handle 64 parallel to the mounting surface 3 or the abutting surface 4. In this way, when returning to the release position, the link plate 65 is removed from the series by the reverse operation, the head 62 is rotated, and the press contact 63 is tilted away from the slide bar 5. Therefore unlock the sliding bar 5, are then adapted to slide the slide bar 5.

  In the pallet 1 formed as described above, for example, each pair glass 7 is inserted into the loose fitting receiving portion 32 of the mounting surface 3 while putting one foot on the footrest space 31 of the mounting surface described above. In the present example, the pair glass 7 advances in the depth direction by the guide of the open fitting receiving portion 32 in the upward opening groove, and the tip reaches the loose fitting receiving portion 42 of the abutting surface 4, and the receiving inclination thereof. The surface 43 is displaced to one side of the loose fitting receiving portion 42 by the guide of the surface 43 and is temporarily held on the L-shaped two surfaces of the mounting surface 3 and the abutting surface 4. For example, if the slide bar 5 is slid after the necessary number of paired glasses 7 are temporarily loaded according to the construction site, the slide bar 5 interposed between the loose fitting receiving portions 32 and 42, particularly the standing portion 52 is erected. The wall presses or pulls the pair glass 7 so that the pair glass 7 is crimped and clamped to one side of the loose fitting receiving portions 32 and 42, and the pair glass 7 on the L-shaped two surfaces is securely held to swing. Therefore, if the slide bar 5 is locked by operating the clamp device 6, the holding of the pair glass 7 is fixed and can be made suitable for conveyance. For example, in order to lower the pair glass 7 at the construction site after transportation, the clamp device 6 is operated to release the lock, and the slide bar 5 is slid in the return direction to temporarily hold the pair glass 7. Similarly, it is only necessary to put one foot on the footrest space 31 and take out each pair glass 7 so as to be pulled out.

  At this time, the slide bar 5 traverses the loose fitting receiving portions 32 and 42 and is slidable in the transverse direction, so that the stacking work can be carried out while simultaneously carrying a large number of standing glasses on the two L-shaped surfaces. At this time, the loose fitting receiving portion 42 and the slide bar 5 of the mounting surface 3 are cushioned inside the L-shaped channel material forming the loose fitting receiving portion 42 and the receiving portion 52. Since the cushion members 33 and 54 are provided on the opposing surfaces by arranging and fixing the members 33 and 54, the cushion members 33 and 54 absorb the difference in the thickness of the pair glass 7, and the cushion member 33 , 54, so that the pair glass 7 can be pressed and clamped, so that the pallet 1 can securely hold the pair glass 7 having different thicknesses when they are stacked.In addition, when the difference in thickness cannot be absorbed by the cushion material so that the pair glass and the plate glass are stacked simultaneously, if the cardboard is additionally used as a spacer, the case where the difference in thickness is further large can be handled. Can do. Further, the mounting surface 3 and the abutting surface 4 are inclined L-shaped two surfaces, so that the paired glass 7 loaded due to vibration during transportation is prevented from moving back and forth in the depth direction and stable loading is performed. In addition, it is possible to facilitate the loading of the paired glass 7 by using the mounting surface 3 that is inclined at the time of loading, and by arranging about 20 loose fitting receiving portions 32 and 42, it is generally a construction site of a house Since there are about 30 to 40 pair glasses, the pair glass 7 for one building can be transported at the same time by using two pallets 1 and received in the loose fitting receiving portion 42 of the abutment surface 4. By arranging the inclined surface 43, the pair glass 7 can be easily clamped and sandwiched by automatically displacing the pair glass 7 in accordance with the sliding direction of the slide bar 5 when the pair glass 7 is stacked. Can also by that freely locks the sliding bar 5, it is possible to maintain the bonding nip of pair glass 7 in the L-shaped second surface in a fixed state to eliminate the swinging possibility during transportation.

  In the figure, 45 is a loose fitting receiving portion formed on the abutting surface 4 in the same manner as the mounting surface 3 disposed on the lower part together with the connecting seat 41, and 46 is the abutting surface 4 on the pallet base 2. A support frame for supporting the abutting surface 4 disposed on the back side by being tilted and fixed upright is shown.

  Although the illustrated example is as described above, a slide bar is slidably provided in one of the placement surface and the abutment surface so as to cross the loose fitting receiving portion, and the placement surface and the abutment surface. On the other hand, when the rectangular panel is crimped and clamped, and when the slide bar is interposed on both the mounting surface and the abutting surface, the loose fitting receiving portion of the abutting surface is formed with a groove. The L-shaped two surfaces of the mounting surface and the abutting surface should be horizontal and the abutting surface should be vertical. Many loosely arranged receiving portions, for example, extrusion of integrally molded aluminum or synthetic resin It is made of a material and placed on the mounting surface and / or the abutting surface, and the slide bar is wide, and it has a large number of receiving parts and is integrally molded with an extruded material of aluminum or synthetic resin. Forming the locking device, for example by means of a rotating handle The slide bar is moved forward and backward using a moving rack and pinion, and its movement is prevented, and the nut of the slide bar is screwed to the screw rotating by the rotary handle, and the slide bar is advanced and retracted by rotating the screw. A structure for preventing movement, a structure for preventing movement of the slide bar by a locking hole of a predetermined pitch arranged on the mounting surface and the abutting surface, and a pin inserted into the locking hole, and a rectangular panel In carrying out the present invention, including a glass plate, a panel for construction, etc. other than a pair glass, a mounting surface, abutment surface, loose fitting receiving portion, slide bar, receiving portion, shaped panel, necessary Specific material, structure, shape, relationship between these, such as loose fitting receiving part, partial seat, locking device, etc., which also serve as slide loading guide used according to Addition or the like against, can be of various forms as long as not contrary to the gist of the invention.

It is a side view of a pallet. It is the elements on larger scale of FIG. It is a front view of a pallet. It is a top view of a pallet. It is an enlarged plan view which shows the relationship between a loose fitting acceptance part and a slide bar. FIG. 6 is an enlarged plan view of a state in which the slide bar of FIG. 5 is slid. It is a longitudinal cross-sectional view of FIG. It is a longitudinal cross-sectional view of FIG. It is a perspective view of a partial receiving seat. It is a top view which shows the model of the crimping | compression-bonding clamping of the pair glass by a loose fitting acceptance part and a acceptance part. It is a top view of the clamp apparatus installed in the mounting surface.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pallet 2 Pallet base 3 Mounting surface 31 Footrest space 32 Free fitting receiving part 33 Cushion material 34 Screw 4 Abutting surface 41 Connection seat member 42 Free fitting receiving part 43 Receiving inclined surface 44 Screw 45 Support frame 5 Slide bar 51 Base Material 52 Receiving part 53 Guide member 54 Cushion material 55 Screw 6 Clamping device 61 Clamp base 62 Head 63 Pressure contact tool 64 Lever handle 65 Link plate 7 Pair glass

Claims (5)

  A loose fitting receiving portion having a predetermined width in which two adjacent sides of the rectangular panel are freely fitted and received on the two L-shaped surfaces of the placing surface and the abutting surface, and one of the placement surface and the abutting surface described above. Or a slide bar having a parallel number corresponding to the loose fitting receiving portion and a receiving portion having a predetermined width, which is provided so as to be slidable in the transverse direction across the loose fitting receiving portion. By sliding, the rising wall of the receiving portion presses the side of the rectangular panel loosely received in the loose fitting receiving portion in the sliding direction, thereby allowing the rectangular panel to be crimped and clamped to the inner side of the width of the loose fitting receiving portion. A rectangular panel stand-up pallet characterized by that.   2. The rectangular panel stand-up stacking pallet according to claim 1, wherein the loose fitting receiving portion of the mounting surface is formed by a groove that also serves as a slide stacking guide for the rectangular panel.   3. The rectangular panel according to claim 1, wherein the loose fitting receiving portion of the abutting surface is formed by partial seats at a plurality of longitudinal positions of the side that holds the side where the rectangular panel stands. 4. Pallet for standing loading.   The loose fitting receiving portion of the abutting surface formed by the partial receiving seat includes a receiving inclined surface so that the partial receiving seat is inclined and narrowed in the same direction as the sliding direction of the slide bar. The rectangular panel pallet for standing loading according to 3. 5. The rectangular panel stand-up stacking pallet according to claim 1, 2, 3, or 4, wherein the slide bar can be locked at an arbitrary position in the sliding direction.

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