JP4166267B2 - Portable screen device - Google Patents

Description

  The present invention relates to a screen for enlarging and projecting a display image by a projection device such as a projector, and more particularly to a portable screen device that can be easily carried and can be installed on an arbitrary place such as a floor or a table.

    In general, an image from a projector is enlarged and projected on a reflective screen. Among such screens, those that are used by being attached to a ceiling or a wall generally use a screen housed in a storage case by being pulled down electrically or manually as required. In addition, the hanging screen type screen device or the tripod stand type screen device is used by being hung in a predetermined place or placed on the floor.

  In recent years, with the increase in conferences at companies or offices, it can be easily carried with projectors, and can be easily installed on a conference room floor, conference desk or table to project images from projectors. There is an increasing demand for portable screen devices of construction. On the other hand, a portable screen in which a screen wound around a spring roll is stored in a storage case has also been proposed. As this portable screen device, a storage case is installed in an arbitrary place, and the screen is pulled up using an elastic force such as a spring by a pantograph, for example, or the screen is locked to a column attached to the storage case. A type (for example, Patent Document 1) has been proposed.

On the other hand, with the spread of projectors for projecting television images, there is an increasing demand for portable screen devices for home use.
Japanese Utility Model Publication No. 6-36048

  However, a portable screen device for home use is required to be smaller and lighter so that it can be carried by women and children. There is also a need for a simple configuration that allows the screen to be easily stored and removed from the storage case.

  Further, the conventional casing is an integral part, and it is necessary to insert a spring roll from the side surface of the casing when mounting. Therefore, accurate positioning of the spring roll is difficult, and the spring roll and the casing may be damaged during insertion. Moreover, in order to hold | maintain the intensity | strength of a casing, it had to be thick, and there also existed a problem that the weight of a casing could not be reduced.

  The present invention has been made in view of such demands and problems, and an object thereof is to provide a portable screen device that is small, light, easy to handle, and has a simple configuration.

In order to solve the above problems, a portable screen device of the present invention includes a casing having an opening extending in the longitudinal direction on the upper surface, a spring roll rotatably attached to the casing, and the spring roll when housed. When used, the screen is unwound from the opening, one end of the screen is fixed, and when stored, the top bar also serves as a lid that closes the opening, and one end is supported at the center of the side of the casing A support screen comprising two cylindrical bodies that are stretched to hold the unrolled screen in a stretched state and are slidable relative to each other to slide and extend. has a first slide lock mechanism for locking the second cylindrical body of the upper stage to the first cylindrical body of the lower stage, the slide lock mechanism said first, second A cylindrical body which is formed of a cylindrical body engaging portion disposed on the inner peripheral surface of the rear end portion of the body and a plurality of through holes formed in the longitudinal direction of the first cylindrical body and engages with the cylindrical body engaging portion. The cylindrical body engaging portion includes an engaging member including a protruding portion that engages with the through hole, and the engaging member advances and retracts the protruding portion with respect to the through hole. It is connected to the motion transmission part to be moved, and the engagement between the through hole and the protrusion is released by pressing the engagement release part provided at the tip of the column connected to the motion transmission part. It is characterized by extending and contracting the support.

  Moreover, in the portable screen device of the present invention, one end of the support column is pivotally supported at the center of the side surface of the casing so as to be able to rise and fall, and the unwound screen can be held in a stretched state when standing up.

  In the portable screen device of the present invention, the first case member and the second case member extending in the longitudinal direction are configured, and one end in the width direction of the first and second case members is mutually connected. On the other hand, it is possible to use a casing in which the other ends in the width direction are spaced apart from each other so that an opening can be formed.

  Further, in the portable clean device of the present invention, the handle portion can be provided at the center portion of the top bar, while the hook portion can be provided at the tip end portion of the support column, and the handle portion can be hooked on the hook portion. Further, the hook portion can be attached to the tip end portion of the support column so as to be horizontally rotatable, and when the support column is fallen down, the hook portion can be rotated and brought into close contact with the casing.

  In the portable screen device of the present invention, a lock mechanism for fixing the top bar to the casing at the time of storage can be provided. The locking mechanism can be composed of an engaging portion disposed on the top bar and an engaged portion disposed on the casing and engaged with the engaging portion. Further, a pair of engaging members disposed opposite to each other in the width direction of the top bar are provided at the engaging portion, and the engaged portion is disposed at the opening edge portion facing the casing, and is engaged with the engaging member. A pair of engaged members can be provided. Further, each engagement member is pivotally supported by the engagement portion so that each engagement member is engaged with the engaged portion at one end, and the engagement end portion is engaged with the other end. A pair of operation units configured to operate the mating / releasing operation and rotating the pair of opposed operation units in the approaching direction to release the engagement with the engaged portion of the engagement end, while the pair of operations The engaging end and the engaged portion can be engaged by rotating the portion in the separating direction. Furthermore, a spring member can be provided in the engaging portion, and the engaging end can be urged so as to be pressed against the engaged portion.

  In addition, the engaging portion of the lock mechanism can be provided with a rotation lock mechanism that prevents the operation portion from approaching during the engagement. The rotation lock mechanism is configured by a lock member that is fitted to the engagement portion so that the lock position and the release position can be rotated freely, and the both ends of the lock member head abut each operation portion at the lock position. Thus, the operation unit can be prevented from approaching, and at the release position, the contact between the both end portions and each operation unit can be released and the operation unit can be allowed to approach.

  In the portable screen device of the present invention, it is formed of a plurality of cylinders that are nested and slide slidable to each other, and the lower cylinder locks the slide of the upper cylinder that has been slid and expanded. In addition, a column having a slide lock mechanism for holding the column at a predetermined height is used.

  The slide lock mechanism is provided with a first slide lock mechanism that engages the lowermost first cylinder with the upper second cylinder. The first slide lock mechanism includes an engaging member and a base portion that supports the engaging member, and a cylindrical body engaging portion that is attached to the outer peripheral surface of the distal end portion of the lower cylindrical body; It is composed of at least one through hole provided in the longitudinal direction of the cylindrical body, and has a cylindrical body engaged portion that engages with the engaging member when extended to lock the upper cylindrical body. it can. Further, the engaging member is configured with a projection that engages with the through-hole at one end and an operation unit that operates engagement / release between the projection and the through-hole at the other end in the axial direction of the cylinder. The engaging member is pivotally supported on the base so that it can rotate, and when the operating portion is pressed in the direction of the cylinder, the engagement between the protruding portion and the through hole is released, and when the pressing of the operating portion is released, the protruding portion and the through hole are engaged. Can be matched. Furthermore, a second slide lock mechanism that locks the slide of the cylinder on the tip side of the second cylinder can be provided. The second slide lock mechanism is composed of a cylinder engaging portion disposed on the inner peripheral surface of the rear end portion of the upper cylinder and a plurality of through holes formed in the longitudinal direction of the lower cylinder. It can comprise from the cylinder body engaging receiving part engaged with a cylinder body engaging part. In addition, a spring member that urges the protruding portion to press-contact with the through hole when engaged can be provided on the cylindrical body engaging portion.

  The first slide lock mechanism may be provided with an operation unit lock mechanism that maintains the pressed state of the operation unit and maintains the disengaged state between the protrusion and the through hole. Further, the operation portion locking mechanism is configured by an engagement groove disposed in the base portion and an engagement pin disposed in the engagement member, and when the operation portion is pressed in the cylinder direction, the engagement groove is engaged. A mating pin can also be engaged. Further, the front end of the cylindrical body on the front end side is guided to engage with the protrusion in the released state and engage the protrusion with the through hole, and the engagement between the protrusion and the through hole is maintained. A protrusion locking mechanism can also be provided. In addition, the slide lock mechanism can be disposed on the bottom cylinder of the support column.

  Further, the slide lock mechanism includes a cylindrical body engaging portion disposed in a concave portion of a sliding member attached to the inner peripheral surface of the rear end portion of the upper cylindrical body on the front end side, and a longitudinal direction of the lower cylindrical body A cylindrically engaged portion that engages with the engaging portion when engaged and engages the upper cylindrical body when extended, and the cylindrical engaging portion is provided at one end. An engaging member having a protruding portion for engaging the through hole, and a protruding portion of the engaging member by engaging one end portion with the concave portion of the sliding member and engaging the other end portion with the other end of the engaging member. Can be configured with a spring member that urges toward the through hole side.

  Further, the slide lock mechanism includes a cylindrical body engaging portion disposed in a concave portion of the sliding member attached to the inner peripheral surface of the rear end portion of the upper cylindrical body on the front end side, and an inner surface of the lower cylindrical body. It is composed of a cylindrically engaged portion formed of a single continuous circumferential groove provided in the longitudinal direction, where the circumferential groove engages with the cylindrical body engaging portion when extended to shorten the upper cylindrical body. A forward groove having a plurality of locking portions that restrict movement in the direction, and a return groove that allows the upper cylinder to move in the shortening direction by releasing the engagement with the cylinder engaging portion when shortening Furthermore, the cylindrical body engaging portion has one end portion loosely fitted in the concave portion of the sliding member, and the other end portion has a projection portion that engages with the locking portion, and the above-mentioned one end portion is used as a fulcrum. A movable engaging member and one end of the engaging member are engaged with the concave portion of the sliding member, and the other end is engaged with the one end of the engaging member, whereby the protrusion of the engaging member is used as the engaging portion. It may be constituted by a spring member for urging only Te.

  According to the present invention, since the casing is composed of two separable case members, the casing can be assembled by connecting the second case member to the first case member to which the spring roll is attached. Thereby, positioning of a spring roll can be performed correctly, without damaging a spring roll and a casing at the time of the assembly of a screen apparatus. Also, by connecting and integrating the two case members, the thickness of the case member can be reduced without reducing the strength of the casing, so the screen device can be made lighter, It is easy to handle. In addition, maintenance such as screen replacement can be easily performed. Moreover, since the top bar also serves as the lid of the casing, the lid is not necessary, and the screen device can be further reduced in weight.

  Further, the support column can be integrated with the casing and the support column can be raised and lowered. Thereby, the screen device can be further downsized by lying the support column during storage, and it is easy to carry. In addition, the support column can be raised during use and the screen can be extended by extending the column to the desired height. This is easy to handle.

Embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
FIG. 1 shows an example of a state when the portable screen device is used. The portable screen device P1 includes a casing 1, a spring roll (not shown) mounted in the casing, a screen 4 unwound from the opening 1c and extended between the top bar 5 and the spring roll, and the casing. 1 and a column 6 that is erected substantially at the center and holds the screen 4 at a predetermined height. The support column 6 is composed of two-stage cylinders 6 a and 6 b that are slidable and extendable and supported by a support column mounting member 25 that is attached substantially in the center of the casing 1, and is held at a predetermined height by a slide lock mechanism 30. . Moreover, the support | pillar 6 has the hook part 7A which can be rotated horizontally at the front-end | tip, and the handle 24 for carrying also the latching member arrange | positioned in the approximate center of the top bar 5 is attached to the hook part 7A. The screen 4 is suspended and hung. Reference numeral 9 denotes an engaging portion constituting a lock mechanism for fixing the top bar 5 to the casing 1 and engages with an engaged portion (not shown) disposed in the casing 1 when stored. The screen device P <b> 1 is supported so as to stand upright by a pair of legs 3, 3 drawn from the bottom of the casing 1.

  FIG. 2 shows an example of the structure of the portable screen P1 with the screen 4 rewound for storage. The screen 4 released from the hook 7 </ b> A is unwound and accommodated in the casing 1. The top bar 5 serves as a lid and closes the opening of the casing 1. FIG. 3 shows an example of the structure of the portable screen P when stored. The support column 6 is turned down around the lower end pivotally supported by the support mounting member 25. Thereby, the support | pillar 6 is accommodated in the state which made the whole support | pillar parallel to the casing 1. FIG. Reference numeral 26 denotes a protective member for the casing which will be described later.

  FIG. 4 is a schematic partial enlarged view of the central portion of the screen device P1 during storage. The lock mechanism includes an engaging portion 9 attached to the upper surface of the top bar 5 and an engaged portion (not shown) that is disposed on the casing 1 side and engages with the engaging portion 9. The engagement portion 9 includes a support portion 14 and a pair of engagement members 11 and 12 which are disposed on the support portion 14 so as to be able to approach and separate from each other in the circumferential direction of the top bar 5. An operating portion locking mechanism 13 is provided between the engaging members to prevent the engaging members from approaching each other when engaged.

  FIG. 5 is a longitudinal sectional view taken along line VV in FIG. As shown in FIG. 5, the casing 1 includes a first case member 1a and a second case member 1b extending in the longitudinal direction. One end of the two case members in the longitudinal direction is connected to be opened and closed by a one-side hinge mechanism, and the other end is separated from each other to form a space portion 1c for unwinding the screen. Here, the first case member 1a on the front surface on the projector side has a curved structure that bulges toward the projector side, while the second case member 1b on the rear surface has an L-shaped cross section. As a result, the spring roll 2 around which the screen 4 is wound can be accommodated in the casing 1, and the opening 1 c can be narrowed to reduce the size of the casing 1. In addition, an aluminum extrusion material can be used for the case member.

  A column attachment member 25 that pivotally supports the column 6 is attached to the rear surface of the casing 1. On the other hand, a protective member 26 that is in close contact with the casing 1 and extends to the bottom of the casing 1 is attached to the front surface of the casing 1. Here, one end of the protective member 26 is fastened to the bottom of the casing 1 by rivets 28 and 29, and the other end is fastened and fixed by a rivet 27. And the support | pillar attachment member 25 and the protection member 26 are mutually fitted and fixed. The protective member 26 has an effect of preventing the first case member 1a from being further bent and deformed to the projector side due to the load of the top bar. The protective member is preferably a highly elastic and lightweight resin cover.

  The lock mechanism 8 includes an engaging portion 9 and an engaged portion 10. Further, the engaging portion 9 is composed of a pair of engaging portions of a first engaging portion 11 and a second engaging portion 12. The first engaging member 11a and the second engaging member 12a constituting the first engaging portion 11 and the second engaging portion 12, respectively, are arranged opposite to each other in the width direction of the top bar 5, and the longitudinal direction of the top bar. Is pivotally supported by the base 14 so as to be rotatable in a vertical part. Further, each of the engaging members 11a and 12a is operated to operate engagement / release of the engagement end portions 111a and 121a engaged with the engaged portion 10 at one end and the engagement end portions 111a and 121a at the other end, respectively. It has parts 112a and 122a. FIG. 5 shows an example in which an engagement claw is used for the engagement end portions 111a and 121a and a convex handle portion is used for the operation portions 112a and 122a.

  On the other hand, the engaged portion 10 includes a pair of engaged members 15 and 16. The engaged members 15 and 16 are disposed on the opening edge of the case member 1b and the case member 1a, respectively, and engage with the engaging claws.

  Each of the engaging portions of the first engaging portion 11 and the second engaging portion 12 has a first spring member 11b and a second spring having one end engaged with the base and the other end engaged with the engaging member. The member 12b is included. This spring member always urges the operating portions 112a and 122a at one end of the engaging member in a direction away from each other, and presses the engaging end at the other end in the top bar direction.

  FIG. 5 shows a case where the engaged members 15 and 16 are integrated with the column attachment member 25 and the protection member 26, respectively. However, the engaged members 15 and 16 are protected with the column attachment member 25, respectively. The member 26 may be separated.

  When the lock mechanism is engaged, the engagement ends 111a and 121a are engaged with the engaged members 15 and 16, respectively, as shown in FIG. In order to release the engagement between the engagement end portion and the engaged member, the operation portion 112a and the operation portion 122a are pressed toward each other against the biasing force of the spring member. As a result, the engaging members 11a and 12a rotate in a direction in which the engaging end portions 111a and 121a are separated from the engaged members 15 and 16, and the engagement between the engaging end portion and the engaged member is released. The On the other hand, in order to engage the engagement end portion with the engaged member, when closing the opening of the casing with the top bar, the engagement portion is pressed downward, and the engaged member and the engagement end portion are Engage. Due to the urging force of the spring member, the engaging end is engaged in a state of being pressed against the engaged member.

  Further, on the upper surface of the base portion 14, a lock member 13 constituting an operation portion lock mechanism is disposed. The operation unit lock mechanism is a mechanism that prevents malfunction of the lock mechanism. For example, when the stored screen device is moved, when the handle is gripped, the top bar may be pushed out of the casing by accidentally pressing the operation parts in a direction approaching each other. By providing the operation unit lock mechanism, when the lock mechanism is in the engaged state, it is possible to prevent the operation unit from moving and releasing the engaged state.

  The lock member 13 is fitted to the base portion 14 so as to be rotatable between a lock position and a release position, and is in the lock position shown in FIG. 5 when the lock mechanism is engaged. At this lock position, both ends of the head of the lock member 13 are brought into contact with the operation units 112a and 122a, respectively, to prevent the operation unit from approaching. On the other hand, in the release position, the lock member is rotated so as to release the contact between the both end portions and each operation portion, thereby allowing the operation portions to approach each other. Thereby, in the release position, the lock mechanism can be released, the top bar can be fixed to the casing, and the screen can be unwound.

  FIG. 6 is a longitudinal sectional view taken along line VI-VI in FIG. 4 and shows the configuration of the positioning mechanism 17 for accurately aligning the engaging portion and the engaged portion of the lock mechanism. . The positioning mechanism 17 includes a guide portion 18 formed on the opening edge of the casing so as to be aligned with the engaged portion, and a guided portion formed on the base portion 14 of the lock mechanism and capable of loosely fitting with the guide portion 18. 19. The guide part 18 is composed of a pair of projecting edge parts 20 and 21 arranged at the opening edge part facing the casing. Each protruding edge portion can be composed of at least one protruding portion, but it is preferable that two or more protruding portions are disposed on both sides of the engaged member. On the other hand, the guided portion 19 includes guide grooves 22 and 23 formed on the front surface side and the rear surface side of the base portion 14.

  When the opening of the casing is closed with the top bar, the guided portion is loosely fitted to the guide portion, and the top bar is positioned and fixed to the opening. Thereby, since the engagement position of the engaging part of the lock mechanism and the engaged part does not shift, the top bar can be easily locked. In this embodiment, an example in which a guide groove is used for the guided portion and a protruding edge portion is used for the guide portion is shown. However, a protruding edge portion is used for the guided portion and a guide groove is used for the guide portion. You can also.

  As shown in FIG. 7, the first slide lock mechanism 30 is attached to the outer peripheral surface of the distal end portion of the lower first cylindrical body 6 a and has a cylindrical body engaging portion 31 having a cylindrical body engaging member 32. And at least one through hole provided in the longitudinal direction of the upper second cylindrical body 6b, and engages with the cylindrical engagement member 32 when extended to lock the second cylindrical body. And an engaging portion 61b. The cylindrical body engaging portion 31 has a base 33 attached to the outer peripheral surface of the distal end portion of the first cylindrical body 6a, and a shaft on the base 33 so as to be rotatable within a vertical portion of the outer peripheral surface of the first cylindrical body 6a. There is provided a cylinder engaging member 32 that is supported and engageable with the through hole 61b, and a spring member 34 that urges the cylinder engaging member 32 to engage with the through hole. A sliding member 35 is attached to the inner peripheral surface of the rear end portion of the second cylindrical body 6b on the front end side. A pair of recesses 35a formed symmetrically in the axial direction of the sliding member 35 are provided with a pair of locking members 133 and the locking members 133 so as to contact the inner peripheral surface of the first cylindrical body 6a. A locking portion 131 including a pair of spring members 132 that are constantly biased is disposed.

  The cylinder engaging member 32 has a protruding portion 32a that engages with the through hole 61b at one end, and an operating portion 32b that operates engagement / release of the protruding portion 32a and the through hole 61b at the other end. ing. The spring member 34 has one end engaged with the base portion 33 and the other end engaged with the operation portion 32b. The spring member 34 constantly urges the operation portion 32b away from the base portion 33, and the protrusion portion. 32a is pressed against the outer peripheral surface of the cylinder. Therefore, when the second cylinder 6b is pulled out from the first cylinder 6a to extend the support column, the protrusion 32a pressed and held on the outer peripheral surface of the cylinder engages with the through hole 61b, and the protrusion 32a is brought into pressure contact with the through hole 61b. Thereby, the 2nd cylinder 6b can be locked and the support | pillar 6 can be hold | maintained to predetermined height. On the other hand, when shortening the support column, when the operating portion 32b is pressed against the urging force of the spring member 34, the protruding portion 32a rotates in a direction away from the outer peripheral surface of the cylindrical body, and the through hole 61b is moved. The engagement is released. When the engagement between the protruding portion 32a and the through hole 61b is released, the second cylinder 6b attempts to descend by its own weight, but the pair of locking members 133 biased by the spring member 132 has the first The contact with the inner peripheral surface of the cylinder 6a is suppressed or stopped. In this state, the second cylinder 6b is pushed into the first cylinder 6a to shorten the column. Thereby, even if the slide lock mechanism is released, the second cylindrical body 6b does not drop suddenly, so that the column can be safely shortened. Although FIG. 7 shows an example using a pair of locking portions 131, the same effect can be obtained if the locking portions 131 are provided only in the concave portion 35a on one side.

  FIG. 8 is a schematic exploded perspective view showing an example of the configuration of the hook portion 7A. The hook portion 7A includes a hollow hook member 71 having a latching portion 71a for latching a handle portion at a side portion, and a support portion that is concentrically fitted to the hook member 71 and supports the hook member so as to be horizontally rotatable. 72. The support portion 72 includes a circular support base 72e that contacts the ceiling portion 71e of the hook member 71, and a pair of support legs 72a that support the support base 72e. It has a protrusion 72d. A pair of engagement holes 611b are formed at the distal end of the second cylinder 6b, and a pair of engagement protrusions 72d are fitted by fitting the support 72 to the distal end of the second cylinder 6b. Is engaged with the engagement hole 611b. Thereby, the support part 72 is fixed to the front-end | tip part of the 2nd cylinder 6b. Moreover, the support part 72 has a pair of sliding protrusion 72b arrange | positioned on the support stand 72e so that it may become point-symmetrical with respect to the center point of the support stand. In addition, a pair of anti-rotation sliding grooves 71b are formed in the ceiling portion of the hook member 71 so as to be point-symmetric with respect to the center point concentric with the center point of the support base 72e. Positioning is performed so that the sliding protrusion 72 b is accommodated in each sliding groove 71 b, and the support portion 72 is fitted into the hook member 71. The pair of sliding protrusions 72b are respectively housed in the sliding grooves 71b and constitute two pairs of rotation preventing portions. That is, when the hook member 71 is rotated between the use position and the storage position, the sliding groove is also rotated in the same direction. However, the sliding protrusion 72b abuts on the end surface, so that the hook member 71 Further rotation is prevented.

  Specifically, the hook member 71 has engagement recesses 71 c and 71 d on the inner peripheral surface, and the engagement recess engages with the engagement protrusion 72 c of the support portion 72 in the use position and the storage position. . The engaging recesses 71c and 71d can be used in both the use position and the storage position. For example, when the engagement recess 71c is set to the use position, the direction of the hook 71a is substantially perpendicular to the longitudinal direction of the top bar. Here, when the hook member 71a is rotated from the use position so as to be parallel to the top bar, the engagement with the engagement recess 71c and the engagement protrusion 72c is released, and the sliding groove 71b is also the same as the hook member 71a. Rotate in the direction. In the storage position, the engaging recess 71d and the engaging protrusion 72c engage to fix the hook member 71 to the support 72, while the end surface of the sliding groove 71b contacts the sliding protrusion 72b and hooks. Further rotation of the member 71 is suppressed. In this state, the support is laid down and stored so that the entire support is substantially parallel to the casing. Thereby, since the latching | locking part 71a does not protrude to the circumference | surroundings, storage and carrying are easy. The rotation prevention unit suppresses excessive rotation of the hook member when an excessive rotation load is applied to the hook member, thereby preventing the hook member from moving from the use position or the storage position. Therefore, switching between the use position and the storage position is easy. In particular, two pairs of rotation prevention portions are provided so that the sliding protrusion and the sliding groove end surface come into contact with each other at a point-symmetric contact position, so that excessive rotation of the hook member can be more reliably suppressed. Can do.

  The operation of the portable screen device according to the present embodiment will be described below. When not in use, as shown in FIG. 3, the support column is tilted and stored so as to be substantially parallel to the casing. The top bar is fixed to the casing as a lid of the casing and is extremely easy to store and carry. Further, the hook portion at the tip of the support column is rotatably supported by the support column.

  At the time of use, as shown in FIG. 2, after the support is raised, the first slide lock mechanism is released to extend the support. Next, the first slide lock mechanism is operated to hold the column at a predetermined height. Next, the lock of the top bar against the caging is released by releasing the operation part lock mechanism of the lock mechanism and pressing the operation parts in a direction approaching each other. Next, when the top bar is pulled upward, the screen is unwound from the spring roll against the elastic force and gravity of the spring attached to the spring roll. Subsequently, the screen is held in a stretched state by hooking a handle disposed on the top bar to the hook portion of the column.

  When storing, remove the handle from the hook, and with the handle held, lower the top bar onto the opening. At this time, the guide portion of the positioning mechanism first comes into contact with the guided portion, and when the top bar is lowered as it is, it is loosely fitted into the guided portion. In this state, the engagement portion and the engaged portion of the lock mechanism are aligned. Next, when the top bar is pressed downward, the lock mechanism operates to fix the top bar to the casing. Furthermore, the slide lock mechanism of the support is released to shorten the support, and then the hook is rotated so that the hook does not protrude around. Next, the support column is rotated and tilted and stored so as to be parallel to the casing.

  According to the present embodiment, the top bar also serves as the lid of the casing, and the casing is configured by the first case member and the second case member connected by the one-side hinge mechanism. Since the thickness of the case member is reduced without reducing the strength, the screen device can be further reduced in weight.

  In addition, since the support column is integrated with the casing and the support column can be raised and lowered, the screen device can be further downsized by overturning the support column during storage.

  Further, the top bar can be easily fixed to the casing by a single operation of pressing the operation portion of the lock mechanism.

  Further, the column can be easily shortened by pressing the column in a state where the operation portion of the spring lock mechanism is pressed to release the locked state of the second cylinder.

Embodiment 2. FIG.
The screen device according to the present embodiment shows an example in which another slide lock mechanism is used instead of the slide lock mechanism used in the first slide lock mechanism of the first embodiment.

  FIG. 9 is a perspective view showing the structure of the screen device P6 in a state where the screen is rewound. The column 6A is composed of a lower first cylindrical body 6a and an upper second cylindrical body 6b, and a cylindrical body engaging portion constituting a first slide lock mechanism at the tip of the first cylindrical body 6a. 101, and a protrusion lock mechanism 110 for releasing the release state of the first slide lock mechanism is provided below the hook portion 7C. Can be configured.

  The first slide lock mechanism used in the present embodiment is formed in the longitudinal direction of the cylinder engaging portion disposed on the outer peripheral surface of the distal end portion of the first cylinder 6a and the second cylinder 6b. And a cylindrical body engaging receiving portion that engages with the cylindrical body engaging portion.

  FIGS. 10A to 10B and FIGS. 11A to 11C are schematic views showing the structures of the engaging member 102 and the base 103 constituting the cylindrical body engaging portion 101, and FIGS. 10A and 10B are side views of the engaging member 102, respectively. FIGS. 11A, 11B, and 11C are a top view, a front view, and a side view of the base 103, respectively.

  The engaging member 102 is pivotally supported by the base 103 at the center, and a projection 102a that engages with a through hole provided in the cylindrical body at one end, and an engagement / release of the projection 102a and the through hole at the other end. The operation unit 102b is operated, and a pair of engagement pins 102c and 102c are disposed on both side surfaces of the operation unit 102b.

  On the other hand, the base 103 that pivotally supports the engaging member 102 extends in the axial direction of the outer peripheral surface thereof, and has a concave groove 103a that accommodates the engaging member 102 and a pair of shaft holes 103b that pivotally support the engaging member 102. 103b and a pair of engaging grooves 103c and 103c for engaging with the engaging pins. The engaging groove 103c is formed from the outer peripheral surface side to the cylindrical body side, and has a bumping portion 1032c at a tip portion on the cylindrical body side, and the bumping portion 1032c is continuous with the sliding groove portion 1031c via the constricted portion 1033c. ing.

Hereinafter, the operation of the slide lock mechanism will be described with reference to schematic longitudinal sectional views of FIGS.
FIG. 12 shows a state at the start of extension of the column 6B. The first slide lock mechanism 100 is composed of a through hole 62b and an engaging part 101 attached to the tip of the first cylindrical body 6a, and the protruding part 102a engages with the through hole 62b. ing. On the other hand, a projection lock mechanism 110 including a hook 7C and an engaging projection is disposed below the hook 7C. In the present embodiment, the hook portion 7C and the engaging protrusion 110 are separated, and the hook portion 7C can be horizontally rotated, while the engaging protrusion 110 is positioned in a straight line with the operation portion 102 in the axial direction. It is firmly attached. Furthermore, the engaging protrusion 110 and the engaging member 102 are disposed on the front side of the column on which the screen is hooked.

  FIG. 13 shows a state in which the support is extended to be the longest. When extending the column from the state of FIG. 12, the hook portion 7C is pulled up with the operation portion 102b being pressed. At this time, the first slide lock mechanism is released, the second cylinder 6b is released, and the second cylinder 6b can be easily pulled out from the first cylinder 6a. Next, in the longest state, when the pressing of the operation portion 102b is stopped, the operation portion 102b is separated from the base portion 103 by the biasing force of the spring member 104, and the protrusion portion 102a is engaged and locked with the through hole 62b by the lever operation. The cylinder 6b is locked to the cylinder 6a. In this state, the screen is hooked on the hook portion 7C and the screen device is used.

  FIG. 14 shows a state when the shortening of the support is started for storage. First, the screen is removed from the hook portion 7C, the top bar is lowered, and the screen is rewound. Next, the first slide lock mechanism is operated. That is, when the operation portion 102b is pressed strongly in the direction of the base portion 103, the engagement between the projection portion 102a and the through hole 62b is released by the lever operation, while the engagement pin 102c slides the engagement groove 103c in the direction of the base portion 103. It moves, passes through the constricted part 1033c, reaches the abutting part 1032c, and is fixed by engagement. Here, since the constricted portion 1033c is narrower than the bumping portion 1032c, the movement of the locking pin 102c to the constricted portion 1033c is suppressed, and the locking pin 102c is fixed to the bumping portion 1032c. Thereby, the pressing state of the operation part 102b is maintained, and it becomes possible to push down a support | pillar.

  FIG. 15 shows a state in which the column is pushed down from the state of FIG. The second slide lock mechanism is easily released by pushing down the second cylinder 6b, the second cylinder 6b is pushed down, and the tip thereof approaches the second slide lock mechanism. That is, the engaging protrusion 110 is formed of an inclined surface at the tip, an abutting portion 110a capable of contacting the corner portion 102d constituting the base of the protruding portion 102a, and a vertical surface continuous with the inclined surface. Thus, the fixing portion 110b that can be engaged with the corner portion is provided, and when the column is pushed down, the abutting portion 110a of the engaging protrusion 110 abuts on the corner portion 102d. When the column is further pushed down, the corner portion 102d is pressed in the cylinder direction, and at the same time, the locking pin 102c is moved from the abutting portion 1032c to the sliding groove 1031c by the lever operation, and the operation portion 102b is unlocked. Further, when the column is pushed down to the shortest length, as shown in FIG. 16, the corner portion 102d is guided by the contact portion 110a to reach the fixed portion 110b and engages with the fixed portion 110b. At the same time, the tip of the protrusion is engaged with the through hole 62b. In this state, the protrusion 102a is fixed by the engagement protrusion 110 and is in a locked state. Subsequently, the hook portion 7C is rotated so that it does not protrude to the periphery during storage, and then the support column is rotated and tilted and stored so as to be parallel to the casing.

According to the present embodiment, in addition to the effects obtained in the first embodiment, the following effects are further obtained.
Since the protrusion lock mechanism provided at the lower part of the hook portion 7C is brought into contact with and engaged with the protrusion of the first slide lock mechanism, the release state of the first slide lock mechanism is switched to the lock state. With a single operation of pushing down the column, it is possible to shorten the column and slide lock the cylinder at once. Furthermore, since the engagement member is provided on the front surface of the support column, the support member can be shortened by operating the engagement member on the front surface of the screen device. Therefore, the strut can be shortened more easily than when the engaging member is provided on the back surface of the strut.

Embodiment 3 FIG.
The screen device according to the present embodiment shows an example in which a three-stage cylinder is used as a support in Embodiment 2. FIG. 17 is a perspective view showing the structure of the screen device P5 with the screen rewound. The support column is configured by the same method as in the second embodiment, except that the column is composed of the lower first cylindrical body 6a, the middle second cylindrical body 6b, and the upper third cylindrical body 6k. Can do.

  The configuration of the second slide lock mechanism is shown in FIG. A sliding member 36 is attached to the inner peripheral surface of the rear end portion of the third cylindrical body 6k. An engaging member 38 is engaged with the recess 36a of the sliding member 36, and one end is engaged with the recess 36a. Is engaged with the engaging member 38, and a cylindrical body engaging portion 37 including a spring member 39 that biases the engaging member 38 is disposed. On the other hand, a plurality of through holes are formed in the longitudinal direction at the distal end portion of the second cylinder 6b, and the plurality of through holes engage with the cylinder engaging portion 37. 62b is configured. The engaging member 38 has a ball-shaped protrusion 38a at its tip, and is pressed by the spring member 39 so that the ball-shaped protrusion 38a engages with the through hole 62b, and the third cylindrical body 6k is fixed. The In order to release the engagement, the ball-shaped protrusion 38a is directly pressed against the urging force of the spring member 39, or the third cylindrical body 6k is pushed down to indirectly place the ball-shaped protrusion 38a into the recess 36a. An indentation method can be used. Here, metallic or resin-made ones can be used for the ball-shaped protrusions 38a, but it is preferable to use one made of resin. Further, the edge of the through hole is rounded, or a taper that extends toward the third cylindrical body 6k is provided. Thereby, the frictional force between the through hole and the engaging member can be reduced. Therefore, the engagement can be easily released by pulling out or pushing in the third cylinder 6k from the second cylinder 6b without directly pressing the ball-shaped protrusion 38a.

Hereinafter, the operation of the slide lock mechanism will be described. The operation of the first slide lock mechanism will be described with reference to FIGS.
When the operating portion 102b is pressed in a state where the support column is the shortest length, the first slide lock mechanism is released, the second cylinder 6b is released, and the second cylinder 6b is released from the first cylinder 6a. It can be pulled out easily (FIG. 12). Further, the third slide body 6k is strongly pulled out from the second cylinder body 6b, so that the second slide lock mechanism does not operate, that is, the ball-shaped protrusion 38a is not engaged with the through hole 62b. 3 cylinders 6k can be pulled out. Therefore, the second cylinder 6b and the third cylinder 6k can be pulled out from the first cylinder 6a by simply pulling up the hook portion 7C, so that the support column can be in the longest state.

  Next, in the longest state, when the operation portion 102b is lightly pressed, the operation portion 102b is separated from the base portion 103 by the biasing force of the spring member, and the protrusion portion 102a is engaged and locked with the through-hole 62b by the lever operation. The body 6b is locked to the cylindrical body 6a (FIG. 13). In this state, the screen is hooked on the hook portion 7C and the screen device is used.

  Next, when the shortening of the support is started for storage, the screen is first removed from the hook portion 7C, the top bar is lowered, and the screen is rewound. Next, the first slide lock mechanism is operated. That is, when the operation portion 102b is strongly pressed in the direction of the base portion 103, the engagement between the projection portion 102a and the through hole 62b is released by the lever operation, while the engagement pin 102c slides the engagement groove 103c in the direction of the base portion 103. It moves, passes through the constricted portion 1033c, reaches the abutting portion 1032c, and is fixed by being engaged (FIG. 14). Here, since the constricted portion 1033c is narrower than the bumping portion 1032c, the movement of the locking pin 102c to the constricted portion 1033c is suppressed, and the locking pin 102c is fixed to the bumping portion 1032c. Thereby, the pressing state of the operation part 102b is maintained, and it becomes possible to push down a support | pillar.

  Next, when the support is pushed down, the second slide lock mechanism is easily released by pushing down the third cylinder 6k, the second cylinder 6b is pushed down, and the tip thereof approaches the second slide lock mechanism. To do. That is, when the support is pushed down, the contact portion 110a of the engagement protrusion 110 contacts the corner portion 102d (FIG. 15). When the column is further pushed down, the corner portion 102d is pressed in the cylinder direction, and at the same time, the locking pin 102c is moved from the abutting portion 1032c to the sliding groove 1031c by the lever operation, and the operation portion 102b is unlocked. Further, when the column is pushed down to the shortest length, as shown in FIG. 16, the corner portion 102d is guided by the contact portion 110a to reach the fixed portion 110b and engages with the fixed portion 110b. At the same time, the tip of the protrusion is engaged with the through hole 62b. In this state, the protrusion 102a is fixed by the engagement protrusion 110 and is in a locked state. Subsequently, the hook portion 7C is rotated so that it does not protrude to the periphery during storage, and then the support column is rotated and tilted and stored so as to be parallel to the casing.

According to the present embodiment, in addition to the effects obtained in the second embodiment, the following effects are further obtained.
First, by configuring the support column with a three-stage cylindrical body, the height of the support column can be increased and a larger screen can be extended. In addition, a second slide lock mechanism that can be easily disengaged by pulling out or pushing in the third cylinder is provided, while the protrusion lock mechanism provided at the tip of the third cylinder is provided with the first slide lock. Since the release state of the first slide lock mechanism is switched to the locked state by abutting and engaging with the protrusion of the mechanism, the column is once changed from the longest state to the shortest state by a single operation of pushing down the column. It is possible to push it down and the strut shortening operation is extremely easy.

The screen device of the present invention is not limited to the first to third embodiments, and includes screen devices including various modifications of the constituent members shown below.
FIG. 19 shows a modification of the hook portion shown in FIG. The hook portion 7B includes a support portion 74 and a rotation portion 73 that is pivotally supported by the support portion 74 so as to be rotatable in a vertical plane with respect to the longitudinal direction of the top bar, and has a latching portion 73a that latches the handle. is doing. The support portion 74 is fitted and fixed to the distal end portion of the second cylindrical body 6b constituting the support column. At the time of use, the rotating portion 73 is pushed down in the vertical direction of the top bar to hook the handle. As a result, the screen can be held in a stretched state. On the other hand, at the time of storage, the support part is tilted in a state in which the rotating unit 73 is lifted up so as to be substantially in line with the support, and the support is stored so that the support is substantially parallel to the casing. Thereby, since the rotation part 73 does not protrude to the circumference | surroundings, storage and carrying are easy.

FIG. 20 shows a first modification of the slide lock mechanism used in the first embodiment.
In the slide lock mechanism of the present modification, the sliding member 36 is attached to the inner peripheral surface of the rear end portion of the second cylindrical body 6d on the front end side, and the engaging member 38 is disposed in the concave portion of the sliding member 36. And a cylinder engaging portion 37 is disposed which includes a spring member 39 that urges the engaging member 38. On the other hand, a plurality of through holes are formed in the longitudinal direction at the distal end of the first cylinder 6c, and the plurality of through holes engage with the cylinder engaging portion 37. 61c is configured. The second cylinder 6d is pulled out from the first cylinder 6c, and the tip protrusion 38b of the engagement member 38 is engaged with a through hole at a desired position among the plurality of through holes, whereby the second cylinder 6d. To hold the post at the desired height. By pressing the tip protrusion 38b, 6d locking of the second cylinder can be released.
According to this modification, the height of the screen can be adjusted stepwise with a simple configuration.

FIG. 21 shows another modification 2 of the slide lock mechanism used in the first to third embodiments.
The slide lock mechanism of the present modification includes a sliding member 40 attached to the inner peripheral surface of the rear end portion of the second cylindrical body 6f, and a cylindrical body engagement disposed in the concave portion 40a of the sliding member 40. A cylindrical body engagement comprising a portion 41 and at least one through hole provided in the longitudinal direction of the first cylindrical body 6e, which engages with the engaging portion 41 when extended to lock the second cylindrical body 6f. And a receiving portion 61f. Further, the cylindrical body engaging portion 41 includes an engaging member 42 pivotally supported by the sliding member 40, and one end engaged with the engaging member 42, while the other end engaged with the sliding member 40. A spring member 43 that biases the engaging member 42 is provided. Furthermore, the engaging member 42 has a projecting portion 42a that engages with the through hole at one end, and a connecting portion 42b that connects a motion transmitting unit that moves the projecting portion 42a forward and backward with respect to the through hole at the other end. . The motion transmission unit includes a wire rod 45 supported by an engagement release portion provided at the hook portion 7C at the tip of the second cylindrical body 6f, and a body 44 to be lifted and lowered by the wire rod 45. The to-be-lifted body 44 is engaged with the connecting portion 42b, and the engaging member 42 is rotated in the axial direction of the column by the up-and-down movement of the to-be-lifted body 44, so To do.

  The disengagement portion includes an operation member 46 pivotally supported on the hook portion 7C so as to be rotatable in the axial direction of the column, and a spring member having one end engaged with the operation member 46 and the other end engaged with the hook portion 7C. 47. Furthermore, the operation member 46 includes a support portion 46a that supports the wire 45 and an operation portion 46b, and the spring member 47 biases the operation portion 46b away from the hook portion 7C.

  In a state where no external force is applied to the operation portion 46b, the protrusion 42a of the engagement member 42 is engaged with the through hole by the biasing force of the spring member 43. On the other hand, when the operating portion 46b is pressed against the biasing force of the spring member 47, the lifted body 44 rises, and the protrusion 42a of the engaging member 42 resists the biasing force of the spring member 43 from the through hole. It retreats in the direction of separating and the engagement with the through hole can be released.

  According to this modification, the column can be easily expanded and contracted while the handle is hooked on the hook portion and the screen is pulled out. That is, when the support column is extended or contracted, the upper cylinder is pushed into the lower cylinder while the operation part of the disengagement part provided at the tip of the support is pressed, or the upper cylinder is pushed into the lower cylinder. Just pull it out of your body. In a state where the operation portion is pressed, the protrusion of the engaging member does not engage with the through hole. Thereby, the column can be expanded and contracted by a single pulling or pushing operation. Moreover, since the engagement release part is provided in the hook part, a support | pillar can be expanded-contracted by one-hand operation while holding a hook part.

  FIG. 22 shows still another modification 3 of the slide lock mechanism used in the first to third embodiments. The slide lock mechanism of this modification is different in that a stepless engagement mechanism is used instead of the cylinder engagement portion and the cylinder engagement receiving portion of the slide lock mechanism shown in FIG.

  That is, the slide lock mechanism of this modification is formed on the outer peripheral surface of the sliding member 48 attached to the inner peripheral surface of the rear end portion of the second cylinder 6h and the lower end portion 50 of the sliding member 48. A ball 51 that holds the second cylindrical body 6h at a predetermined height by contacting the inclined portion 50a, and a ball guide portion 49 that guides the ball 51 to contact the inclined portion 50a. Further, the ball engaging portion 49 has one end engaged with the guide member 52 pivotally supported by the lower end portion 50 of the sliding member 48 and the concave portion 48 a of the sliding member 48, and the other end thereof is one end of the engaging member 52. The spring member 53 is engaged with the spring member 53. The guide member 52 has an engaging portion 52b with a spring member 53 engaged at one end thereof, and a release portion 52a at the other end for pressing the ball 51 and releasing the contact of the ball 51 with the inclined portion 50a. is doing. The spring member 53 is always biased in a direction in which the release portion 52a is separated from the ball 51 by lever operation through the engaging portion 52b.

  In addition, the motion transmission unit includes a wire rod 45 supported by an engagement release portion provided on the hook portion 7C at the tip of the second cylindrical body 6f, and a lifted body 44 suspended by the wire rod 45. Yes. The to-be-lifted body 44 is engaged with an engaging portion 52 b that also serves as a connecting portion, and the engaging member 52 is rotated in the axial direction of the column by the up-and-down movement of the to-be-lifted body 44 and the release portion 52 a is pressed against the ball 51. Or the release portion 52a is separated from the ball 51 or held in a simple contact state. The wire 45 passes through the longitudinal direction of the spring member 53 of the ball guide portion 49 and is engaged with the engaging portion 52b.

  Here, the disengagement portion includes an operation member 46 pivotally supported on the hook portion 7C so as to be rotatable in the axial direction of the support column, one end being engaged with the operation member 46, and the other end being engaged with the hook portion 7C. A spring member 47 is provided. Furthermore, the operation member 46 includes a support portion 46a that supports the wire 45 and an operation portion 46b, and the spring member 47 biases the operation portion 46b away from the hook portion 7C.

In a state where no external force is applied to the operation portion 46b, the release portion 52a is separated from the ball 51 or is simply in contact with the urging force of the spring member 53. Therefore, the ball 51 is in contact with the inclined portion 50a, and the second tube The body 6h is fixed. When an external force is applied to the operation portion 46b to raise the lifted body 44, the release portion 52a presses the ball 51 against the urging force of the spring member 53 to release the contact with the inclined portion 50a. Thereby, a support | pillar can be freely expanded-contracted.
According to this modified example, as in the case of the modified example 2 of the slide lock mechanism, the column can be easily expanded and contracted with the handle hooked on the hook portion and the screen pulled out, and the hook portion Since the disengagement portion is provided on the arm, the strut can be expanded and contracted by one-handed operation while holding the hook portion.

  Further, since the engagement mechanism for bringing the ball into contact with the inclined portion is used, it is not necessary to adjust the height of the support column step by step, and the height can be adjusted to an arbitrary height.

  Further, it is not necessary to perform hole processing for forming a through hole for engagement in the support column, and a lower-cost screen device can be provided.

23 and 24 show still another modification 4 of the slide lock mechanism used in the first to third embodiments.
As shown in FIG. 23, the slide lock mechanism of the present modification is a cylinder disposed in a recess 54a of a sliding member 54 attached to the inner peripheral surface of the rear end part of the second cylinder 6j on the front end side. A cylinder engaging member comprising a body engaging portion 55 and a continuous circumferential groove provided in the longitudinal direction of the inner surface of the lower first cylindrical body 6i and having locking portions 61i, 62i, 63i, 64i. It is composed of joints. The cylindrical body engaging portion 55 has a support portion 56b loosely fitted in the concave portion 54a of the sliding member 54 at one end, and a projection portion 56a engaged with the locking portion at the other end, and the support portion 56b is a fulcrum. A swingable engaging member 56, one end engaged with the recess 54a of the sliding member 54 and the other end engaged with the support portion 56b of the engaging member 56, and the protrusion 56a of the engaging member 56 engaged. It is comprised with the spring member 57 urged | biased so that it may press-contact to a stop part.

  FIG. 24 is a development view showing the structure of the cylinder engaged portion 58. The circumferential groove constituting the cylindrical body engaged portion 58 includes a plurality of locking portions including concave portions that engage with the protrusions 56a and restrict the movement of the second cylindrical body 6j in the shortening direction when the support column is extended. The forward path groove 60 includes a return path groove 59 that disengages the protrusion 56a and allows the second cylindrical body 6j to move in the shortened direction when shortened. The locking portion includes a start point locking portion 64i, intermediate locking portions 63i and 62i, and an end point locking portion 61i in the distal direction from the rear end of the first cylindrical body 6i. The start point locking portion and the intermediate locking portion have vertical portions 641i, 631i, and 621i that lock the projection portion 56a on the rear end side of the first cylindrical body 6i, and are inclined toward the tip end side of the projection portion 56a. Inclined portions 642i, 632i, and 622i that allow movement toward the distal end side are provided. On the other hand, the state-of-the-art end point locking portion has a vertical portion 611i that locks the protrusion 56a on the rear end side, and has an abutting portion made of the vertical portion 612i on the front end side, and the vertical portion 611i and the vertical portion 612i is connected by an inclined portion 613i that is inclined to the vertical portion 612i side.

  When not in use, the protruding portion 56a is in contact with the vertical portion 641i of the start point locking portion 64i, and the second cylindrical body 6j is fixed. From this state, when the second cylinder 6j is pulled out from the first cylinder 6i, the protrusion 56a rises while sliding on the forward groove 60 through the inclined part 642i. When drawing is stopped in a state where the projection 56a is engaged with an arbitrary latching portion, the projection 56a comes into contact with the latching portion, for example, the vertical portion 621i of the intermediate latching portion 62i, and the second cylinder 6j is Fixed. On the other hand, in order to shorten the column for storage, when the second cylindrical body 6j is pulled out to the longest and the projection 56a is moved to the end point locking portion 61i, the projection 56a is brought into contact with the abutting portion 612i. At the end, the inclined portion 613i is swung and moved to the return groove 59. In this state, when the second cylinder 6j is pushed into the first cylinder 6i, the protrusion 56a automatically descends the return groove 59 and returns to the starting point locking part 64i. Thereby, a support | pillar can be shortened.

  According to this modification, the column can be easily expanded and contracted while the handle is hooked on the hook portion and the screen is pulled out. In particular, when the column is extended to the longest state, the column automatically descends, so that the column can be easily shortened.

25 to 27 show modifications of the lock mechanism used in the first to third embodiments.
FIG. 25 is a schematic perspective view of the screen device P2 provided in the first modification of the lock mechanism. In this modification, the belt member has one end fixed to one side surface of the casing and the other end detachably fixed to the other side surface of the casing so as to straddle the top bar. As shown in FIG. 25, a handle is fixed to the approximate center of the top bar 5, and the free end of the belt member 84 is detachably fixed by a fixing member fixed to the side surface of the casing across the top bar. .
According to this modification, since the lock mechanism can be made simple, a lower cost screen device can be provided.

FIG. 26 shows another modification 2 of the lock mechanism used in the first to third embodiments. In this modification, an example in which a pair of belt members is used for the lock mechanism is shown. This modification has a pair of belt members 86 and 87 with one end fixed to one side surface of the casing 1 and the other end detachably fixed to the other side surface of the casing 1 so as to straddle the top bar 5. is doing. Free ends of the belt members 86 and 87 are detachably fixed to fixing members 88 and 89 fixed to the other side surface of the casing 1. The handle 81 is substantially at the center of the casing 1 and is fixed between the fixing members 88 and 89, and a hooking member 83 for locking is fixed at the center of the top bar 5.
According to this modification, the top bar can be more securely fixed to the casing by using a simple structure of the lock mechanism and using the pair of belt members.

FIG. 27 shows another modification 3 of the lock mechanism used in the first to third embodiments. In this modification, an example in which a pair of belt members integrated with a handle is used for the lock mechanism is shown. This modification has a pair of belt members 90 and 91 with one end fixed to one side surface of the casing 1 and the other end detachably fixed to the other side surface of the casing 1 so as to straddle the top bar 5. is doing. The free ends of the belt members 90 and 91 are detachably fixed to fixing members 92 and 93 fixed to the other side surface of the casing 1. Both ends of the handle 82 are pivotally supported by a pair of belt members 90 and 91 so as to be rotatable. A hooking member 83 for fastening is fixed to the center of the top bar 5.
According to this modification, the top bar can be more securely fixed to the casing by using a simple structure of the lock mechanism and using the pair of belt members.

  In the first to third embodiments, an example in which a support column composed of two-stage and three-stage cylinders is used is shown, but the number of stages of the cylinders is not limited thereto. For example, in the screen device according to the first or second embodiment, in the case where a column composed of three or more stages of cylinders is configured, the slide lock mechanism shown in FIG. 18 or FIG. Can be used as the second slide lock mechanism. Similarly, in the screen device according to the third embodiment, in the case where a column composed of four or more stages of cylinders is configured, the slide lock mechanism shown in FIG. 18 or FIG. It can be used as a second slide lock mechanism. Moreover, the support | pillar which consists of a multistage cylinder can also be comprised by using the slide lock mechanism shown in FIG. 18 or FIG. 20 for all the slide lock mechanisms.

It is a model perspective view which shows an example of the structure at the time of use of the screen apparatus which concerns on Embodiment 1 of this invention. FIG. 2 is a schematic perspective view showing a structure in a state where the screen is rewound in the portable screen device of FIG. 1. It is a model perspective view which shows the structure at the time of accommodation of the portable screen apparatus of FIG. FIG. 4 is an enlarged top view of the lock mechanism in FIG. 3. It is a model longitudinal cross-sectional view along the VV line of FIG. It is a model longitudinal cross-sectional view along the VI-VI line of FIG. It is a model longitudinal cross-sectional view which shows the structure of the slide lock mechanism used for the portable screen apparatus of FIG. It is a model exploded perspective view which shows the structure of the hook part used for the portable screen apparatus of FIG. It is a model perspective view which shows the structure of the state which rewound the screen of the portable screen apparatus which concerns on Embodiment 2 of this invention. It is a schematic side view which shows an example of the structure of the engaging member used for the 1st slide lock mechanism of the portable screen apparatus of FIG. It is a model front view which shows an example of the structure of the engaging member used for the 1st slide lock mechanism of the portable screen apparatus of FIG. FIG. 10 is a schematic top view showing an example of the structure of the base used in the first slide lock mechanism of the portable screen device of FIG. 9. It is a model front view which shows an example of the structure of the base used for the 1st slide lock mechanism of the portable screen apparatus of FIG. It is a schematic side view which shows an example of the structure of the base used for the 1st slide lock mechanism of the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view (1) which shows the expansion-contraction operation | movement of the support | pillar of the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view (2) which shows the expansion-contraction operation | movement of the support | pillar of the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view (3) which shows the expansion-contraction operation | movement of the support | pillar of the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view (4) which shows the expansion-contraction operation | movement of the support | pillar of the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view (5) which shows the expansion-contraction operation | movement of the support | pillar of the portable screen apparatus of FIG. It is a model perspective view which shows the structure of the state which rewound the screen of the portable screen apparatus which concerns on Embodiment 3 of this invention. FIG. 18 is a schematic longitudinal sectional view showing a structure of a second slide lock mechanism used in the portable screen device of FIG. 17. It is a model exploded perspective view which shows the structure of the modification of the hook part used for the portable screen apparatus of FIG. It is a schematic longitudinal cross-sectional view which shows the structure of the modification 1 of the slide lock mechanism of FIG. It is a schematic longitudinal cross-sectional view which shows the structure of the modification 2 of the slide lock mechanism of FIG. It is a model longitudinal cross-sectional view which shows the structure of the modification 3 of the slide lock mechanism of FIG. It is a model longitudinal cross-sectional view which shows the structure of the modification 4 of the slide lock mechanism of FIG. It is a model expanded view which shows the structure of the circumference groove | channel used for the modification 4 of FIG. It is a model perspective view which shows the structure of the portable screen apparatus which has the modification 1 of the locking mechanism of FIG. It is a model perspective view which shows the structure of the portable screen apparatus which has the modification 2 of the locking mechanism of FIG. It is a model perspective view which shows the structure of the portable screen apparatus which has the modification 3 of the locking mechanism of FIG.

Explanation of symbols

  1 casing, 1a first case member, 1b second case member, 2 spring roll, 3 legs, 4 screen, 5 top bar, 5a support bar, 5b protective cover, 6 struts, 6a, 6c, 6e, 6g 6i 1st cylinder, 6b, 6d, 6f, 6h, 6j 2nd cylinder, 6k 3rd cylinder, 61b, 61c, 61d, 61f, 62b Through-hole, 61i, 62i, 63i, 64i Stop part, 612i, 611i, 621i, 631i, 641i Vertical part, 613i, 622i, 632i, 642i Inclined part, 611b Engagement hole, 7A, 7B Hook part, 71 Hook member, 71a, 73a Hatch part, 71b Guide groove 71c, 71d engagement recess, 72 support, 72a support leg, 72b sliding protrusion, 72c, 72d engagement protrusion, 72e support base, DESCRIPTION OF SYMBOLS 3 Rotation part, 74 Support part, 8 Lock mechanism, 9 Engagement part, 10 Engagement part, 11 1st engagement part, 12 2nd engagement part, 11a 1st engagement member, 11b 1st spring member , 12a Second engagement member, 12b Second spring member, 111a Engagement end, 112a Operation part, 121a Operation part, 122a Engagement end, 13 Lock member, 14 Base, 15, 16 Engaged member, 17 Positioning mechanism, 18 guide part, 19 guided part, 20, 21 projecting edge part, 22, 23 guide groove, 24 handle, 25 strut attachment member, 26 protection member, 27, 28, 29 rivet, 30 first slide lock Mechanism, 31 Tube engaging portion, 32 Tube engaging member, 32a Projection portion, 32b Operation portion, 33 Base portion, 34, 39, 43, 47, 53, 57, 104 Spring member, 35, 36, 4 , 48, 54 Sliding member, 35a, 36a, 40a, 48a, 54a Recessed part, 37, 55 Cylindrical engaging part, 38, 52, 56 Engaging member, 38a Ball-like protruding part, 38b Tip protruding part, 52a Release Part, 52b engaging part, 56a protrusion part, 56b support part, 41 cylindrical body engaging part, 42 engaging member, 42a protrusion part, 42b operation part, 44 lifted object, 45 wire rod, 46 operation member, 46a support part , 46b Operation part, 49 Ball guide part, 50 Lower end of sliding body, 50a Inclined part, 51 Ball, 58 Circulation groove, 59 Return path groove, 60 Outward groove, 80, 81, 82 Handle, 84, 86, 87, 90, 91 belt member, 85, 88, 89, 92, 93 fixing part, 83 hooking part, 100 first slide lock mechanism, 101 cylindrical body engaging part, 102 cylindrical body engaging member, 102 Projection part, 102b Operation part, 102c Engagement pin, 102d Corner part, 103 Base part, 103a Concave groove, 103b Shaft hole, 103c Engagement groove, 1031c Sliding groove part, 1032c Constriction part, 1033c Constriction part, 110 Engagement projection part , 110a abutting portion, 110b fixing portion, 120 second slide lock mechanism, 121 cylinder engaging portion, 131 locking portion, 132 spring member, 133 locking member, P1, P2, P3, P4, P5, P6 Portable screen device.

Claims (6)

A casing having an opening on its upper surface extending in the longitudinal direction;
A spring roll rotatably attached to the casing;
A screen that is wound around the spring roll during storage and unwound from the opening during use;
One end of the screen is fixed, and a top bar serving as a lid for closing the opening when stored;
One end is supported at the center of the side surface of the casing, holds the unrolled screen in a stretched state, and has a support column composed of two cylindrical bodies that are nested and slide in and out of each other. A portable screen device,
Upper Symbol strut has a first slide lock mechanism for locking the second cylindrical body of the upper stage to the first cylindrical body of the lower stage, the first slide locking mechanism, a second cylindrical body A cylindrical body engaging with a cylindrical body engaging portion which is formed of a cylindrical body engaging portion disposed on the inner peripheral surface of the rear end portion and a plurality of through holes formed in the longitudinal direction of the first cylindrical body. Consisting of a reception part,
The cylindrical body engaging portion includes an engaging member including a protrusion that engages with the through hole, and the engaging member is coupled to a motion transmission portion that moves the protrusion forward and backward relative to the through hole. And, by pressing the engagement release portion provided at the tip of the column connected to the motion transmission unit, the engagement between the through hole and the protrusion was released and the column was expanded and contracted. Portable screen device.   The portable screen device according to claim 1, wherein one end of the support column is pivotally supported at a central portion of the side surface of the casing so as to be raised and lowered, and the unwound screen is held in a stretched state when standing.   The portable screen device according to claim 1, further comprising: a column attachment portion that supports a column at a central portion of the rear surface of the casing, and the column attachment portion and the protection member are engaged and fixed.   The portable screen device according to claim 1, wherein a handle portion is provided at a central portion of the top bar, a hook portion is provided at a tip portion of the support column, and the handle portion is hooked on the hook portion.   The portable screen device according to any one of claims 1 to 4, further comprising a lock mechanism that fixes the top bar to the casing during storage. The portable screen device according to claim 1, wherein a protective member is provided at a front center portion of the casing to reinforce the center portion of the casing.

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