JP6378029B2 - stand - Google Patents

Description

  The present invention relates to a stand that supports and moves a display member such as a whiteboard or a display.

  A display member such as a whiteboard or a display is used in a venue where presentations such as briefing sessions and conferences are performed. In a venue where a display member is not installed, it is necessary to install the display member by moving it from another venue.

  For this reason, conventionally, there is a stand that allows the display member to move. In such a stand, a support column that supports the display member, a base unit that supports the support column, a caster that is provided in a lower portion near the end of the base unit and is configured to be movable, and a movement above the base unit Between the allowable position and the fall prevention position in contact with the floor surface extending from the tip of the base portion, an auxiliary stand provided rotatably with respect to the base portion in the vicinity of the caster, Some include a lock mechanism that fixes at a fall prevention position (see, for example, Patent Document 1).

  The stand is configured to be movable in a state where the auxiliary stand is fixed at the movement-permitted position, and is configured to prevent falling while the auxiliary stand is fixed at the fall-preventing position. The lock mechanism includes a lock pin that fixes the auxiliary stand at both ends of the base portion, and a pressure spring that biases the lock pin so that the auxiliary stand does not rotate.

JP-A-10-185085

  However, since this lock mechanism fixes the auxiliary stand only at both ends of the base part, the contact area of the engagement surface between the auxiliary stand and the base part is small, and it breaks down due to the application of strong force and stress due to aging Easy to be.

  An object of the present invention is to provide a stand having a robust locking mechanism for fixing an auxiliary stand to a base portion.

  The stand according to the present invention includes a column, a base portion, a caster, an auxiliary stand, and a lock mechanism, and supports the display member and makes it movable. The support supports the display member. A base part supports a support | pillar. The caster is movable below the end of the base portion. The auxiliary stand is provided at the end. The auxiliary stand is configured to be rotatable between a movement allowable position that extends from the end portion, bends from a fall prevention position that contacts the floor surface, and separates from the floor surface. The lock mechanism fixes the auxiliary stand at each of the fall prevention position and the movement allowance position. The lock mechanism includes an engagement member that engages with the first engagement portion in a state where the auxiliary stand is positioned at the fall prevention position and engages with the second engagement portion when the auxiliary stand is positioned at the movement allowable position. . The auxiliary stand and the base portion have a lock mechanism attached to one of them, and a first engaging portion and a second engaging portion formed on the other.

  The stand can be moved by a caster when the auxiliary stand is fixed at a movement allowable position during movement, and the auxiliary stand is prevented from being overturned by being fixed at a fall prevention position during installation. . The auxiliary stand is located at each of the fall prevention position and the movement allowance position, and the engagement member of the lock mechanism is engaged with each of the first engagement portion and the second engagement portion, so that the fall prevention position and movement are performed. It is fixed at the allowable position. Since the first engagement portion and the second engagement portion that engage with the engagement member of the lock mechanism are formed on the auxiliary stand and the base portion to which the lock mechanism is not attached, the lock mechanism is connected to the engagement member and the first engagement portion. The contact area between the first engaging portion and the second engaging portion can be increased.

  In this configuration, the first engaging portion has a first engaging surface substantially parallel to the extending direction in which the auxiliary stand extends from the end portion, and the engaging member is a second substantially parallel to the extending direction. It has an engagement surface, and it is preferable that the second engagement surface is in contact with the first engagement surface when the auxiliary stand is positioned at the fall prevention position.

  When the auxiliary stand is positioned at the fall prevention position, the engagement member and the first engagement portion are in contact with each other by the second engagement surface and the first engagement surface, so that the contact area is increased. For this reason, the stand can be provided with a robust locking mechanism that does not break even when stress is applied due to the application of a strong force or aging.

  In addition, the base portion is provided with a convex portion for providing casters below the end portion, the second engaging portion is an opening formed above the convex portion, and the engaging member is an auxiliary stand. It is preferable to be inserted into the second engaging portion when positioned at the movement allowable position.

  When the auxiliary stand is positioned at the movement allowable position, the engaging member is inserted into the second engaging portion that is the opening, and thus the contact area with the second engaging portion is increased. For this reason, the stand can be provided with a robust locking mechanism that does not break even when stress is applied due to the application of a strong force or aging.

  In addition, in the configuration in which the lock mechanism is attached to the inside of the auxiliary stand, the lock mechanism further includes an operation member that allows the auxiliary stand to be fixed and released to the fall prevention position and the movement allowable position. The member is preferably provided on a side surface of the auxiliary stand.

  Since the lock mechanism is built in the auxiliary stand and the operation member is provided on the side surface of the auxiliary stand, the operation of the operation member, the rotation of the auxiliary stand, and the user can perform with one hand.

  Further, in the configuration in which the lock mechanism has a spring for urging the auxiliary stand toward the base portion, the lock mechanism is an engagement member by the urging force of the spring in a state where the auxiliary stand is located at each of the fall prevention position and the movement allowable position. Engages with each of the first engagement portion and the second engagement portion to fix the auxiliary stand at the fall prevention position and the movement allowable position, and the operation member is operated in a direction opposite to the biasing force of the spring by the operation. It is preferable to energize.

  The lock mechanism urges the auxiliary stand to the base portion with a spring, so that the engaging member is firmly engaged with each of the first engaging portion and the second engaging portion, so that the auxiliary stand can be prevented from falling. It can be firmly fixed to the movement allowable position. Further, the lock mechanism can release the fixing of the auxiliary stand to the fall prevention position and the movement allowable position against the biasing force of the spring by operating the operation member.

  According to the present invention, a robust locking mechanism for fixing the auxiliary stand and the base portion can be provided.

It is an external view of the stand which concerns on 1st Embodiment of this invention. It is an exploded view of the lock mechanism accommodated in the auxiliary stand with which the stand is equipped. It is an assembly and attachment figure of the lock mechanism. It is sectional drawing of the state in which the auxiliary stand was fixed to the fall prevention position. It is sectional drawing of the state in which the auxiliary stand was fixed to the movement permissible position. It is an assembly and attachment figure of the lock mechanism with which the stand concerning a 2nd embodiment of this invention is provided. (A) is a figure which shows the state by which the auxiliary stand with which the stand which concerns on 3rd Embodiment of this invention is equipped was fixed to the fall prevention position, (B) is the state by which the auxiliary stand was fixed to the movement permissible position. FIG.

  A stand according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the stand 1 is configured to support a display member 2 such as a whiteboard or a display and to be movable. The stand 1 includes a column 3, base portions 41 to 44, casters 51 to 54, and auxiliary stands 61 to 64.

  The support column 3 has an H shape when viewed from the front, and the display member 2 is detachable. The support columns 3 are attached to both lower ends of the display member 2 and support the display member 2. In addition, the support | pillar 3 does not need to be comprised so that the display member 2 can be attached or detached freely.

  Base portions 41 to 44 for supporting the column 3 are formed below the column 3. The base portions 41 and 42 are formed along a first extending direction that extends obliquely downward from the front side of the display member 2 toward the front floor surface. The base portions 43 and 44 are formed along a second extending direction that extends obliquely downward from the back side of the display member 2 toward the rear floor surface.

  Casters 51 to 54 are attached below the respective end portions of the base portions 41 to 44. The casters 51 to 54 are configured to be movable in all directions. The casters 51 to 54 have stoppers (not shown) that limit movement.

  Auxiliary stands 61 to 64 are provided at end portions of the base portions 41 to 44. The auxiliary stands 61 to 64 are bent from the end portions of the base portions 41 to 44 extending from the end portions of the base portions 41 to 44 and coming into contact with the floor (see FIG. 4) and from the end portions of the base portions 41 to 44, respectively. It is configured to be rotatable between a movement allowable position (see FIG. 5) that is separated from the floor surface. In addition, each of the auxiliary stands 61 to 64 includes a lock mechanism 7 (see FIG. 2) that fixes each of the auxiliary stands 61 to 64 to a fall prevention position and a movement allowable position.

  Below, the lock mechanism 7 which fixes the auxiliary stands 61-64 with respect to the base parts 41-44 is demonstrated. Since the auxiliary stands 61 to 64 have the same configuration and the base portions 41 to 44 have the same configuration, the base portion 41, the auxiliary stand 61, and the lock mechanism 7 will be described as examples.

  As shown in FIG. 2, the base portion 41 includes a main body portion 411 and a caster portion (corresponding to a convex portion of the present invention) 412. The main body 411 has a cylindrical shape with a rectangular cross section, and a space is formed inside. An opening 410 that can be connected to the auxiliary stand 61 is formed at the end of the main body 411. A caster portion 412 is formed on the lower surface of the end portion of the main body portion 411 via an opening portion (corresponding to a second engagement portion of the present invention) 413. The caster portion 412 has a bottom portion 414 that is horizontal in a state where the main body portion 411 is disposed along the first extending direction. The caster 51 is attached to the bottom portion 414.

  In addition, a convex portion (corresponding to the first engagement portion of the present invention) 415 protruding from the lower surface in the back of the caster portion 412 as viewed from the opening portion 410 inside the main body portion 411 (see FIG. 4). ) Is formed. The upper surface (corresponding to the first engagement surface of the present invention) of the convex portion 415 is formed so as to be substantially parallel to the lower surface of the main body portion 411.

  The auxiliary stand 61 includes a main body 611 and a rubber 612. The main body 611 has an opening 610 that can be connected to the main body 411 of the base 41. Long holes 613 that are parallel to the upper and lower surfaces of the main body 611 are formed on both side surfaces of the main body 611 on the opening 610 side.

  The main body 611 is curved so that the bottom 614 on the distal end side is horizontal in a state where the main body 611 is disposed along the first extending direction. Rubber 612 is bonded to the bottom 614 with an adhesive. Thereby, since the rubber 612 contacts the floor surface in a state where the auxiliary stand 61 is fixed at the fall prevention position, the auxiliary stand 61 does not damage the floor surface.

  The auxiliary stand 61 accommodates the lock mechanism 7 inside. The lock mechanism 7 includes a lock mechanism frame 71, a lock spring 72, a lock spring buckling prevention shaft 73, a lock angle (corresponding to an engagement member of the present invention) 74, a lock 75, and a lock angle sliding guide 76. And an E-ring 77, a lock release operation shaft 78, and a lock release knob (corresponding to the operation member of the present invention) 79.

  First, each member provided in the lock mechanism 7 will be described. The lock mechanism frame 71 is a long casing, and openings 711 and 712 are formed on two adjacent surfaces. The opening 711 is formed along the longitudinal direction, and the opening 712 is formed at the end in the longitudinal direction. In the lock mechanism frame 71, long holes 713 that pass through the unlocking operation shaft 78 are formed on two surfaces sandwiching the opening 711.

  In addition, the lock mechanism frame 71 is formed with a protruding portion 714 that protrudes along the longitudinal direction on each opening 712 side of the two surfaces sandwiching the opening 711. A through hole 715 that penetrates the lock angle sliding guide 76 is formed in the protruding portion 714. In the lock mechanism frame 71, a through hole 716 for inserting the convex portion 731 of the lock spring buckling prevention shaft 73 is formed at the end opposite to the opening 712.

  The lock spring 72 is a compression spring.

  The lock spring buckling prevention shaft 73 has a convex portion 731 at the tip. The lock spring buckling prevention shaft 73 is inserted into the lock spring 72 and prevents the lock spring 72 from being greatly bent.

  The lock angle 74 is a long casing, and a long hole 741 that penetrates the lock angle sliding guide 76 and a hole 742 that penetrates the unlocking operation shaft 78 are formed on two surfaces facing each other. The lock angle 74 is formed with a convex portion 743 that protrudes from the end portion on the hole 742 side in the longitudinal direction.

  The lock 75 includes a main body portion 751 and a bent portion 752 bent from both sides of the end portion of the main body portion 751. The bent portion 752 is formed with a through hole 753 that passes through the lock angle sliding guide 76.

  Next, a method for assembling the lock mechanism 7 and a method for attaching the lock mechanism 7 to the auxiliary stand 61 and the base portion 41 will be described. First, the opening 711 of the lock mechanism frame 71 is arranged facing the upper surface. The lock spring buckling prevention shaft 73 is inserted into the lock spring 72, and the lock spring 72 is accommodated on the opposite side of the opening 712 of the lock mechanism frame 71. At this time, the convex portion 731 of the lock spring buckling prevention shaft 73 is inserted into the through hole 716 of the lock mechanism frame 71.

  Then, the lock angle 74 in which the long holes 741 are arranged toward both side surfaces is accommodated on the opening 712 side of the lock mechanism frame 71. At this time, the convex portion 743 of the lock angle 74 is inserted into the lock spring 72. The bottom surface 744 of the lock angle 74 corresponds to the second engagement surface of the present invention.

  Thereafter, the lock 75 is fitted into the opening 712 side of the lock mechanism frame 71 so as to cover the bottom of the lock mechanism frame 71 that houses the lock spring 72 and the lock angle 74. In this state, the through hole 753 of the lock 75, the through hole 715 of the lock mechanism frame 71, the long hole 741 of the lock angle 74, the long hole 741 of the lock angle 74, the through hole 715 of the lock mechanism frame 71, and the through hole of the lock 75 These holes are penetrated by the lock angle sliding guide 76 in the order of 753, and E-rings 77 are fitted into both ends of the lock angle sliding guide 76. As a result, the lock angle 74 is movable with respect to the lock mechanism frame 71 within the range of the long hole 741 along the longitudinal direction.

  Then, as shown in FIG. 3, the lock mechanism frame 71 is accommodated in the auxiliary stand 61, and the auxiliary stand 61 and the lock mechanism frame 71 are screwed. At this time, the lock mechanism frame 71 and the auxiliary stand 61 are screwed so that the long hole 713 of the lock mechanism frame 71 and the long hole 613 of the auxiliary stand 61 overlap.

  The slot 613 of the auxiliary stand 61, the slot 713 of the lock mechanism frame 71, the slot 713 of the lock mechanism frame 71, and the slot 613 of the auxiliary stand are passed through the lock release operation shaft 78 in this order and locked. Lock release knobs 79 are attached to both ends of the release operation shaft 78. Thereby, the unlocking operation shaft 78 can move within the range of the long hole 613 along the longitudinal direction with respect to the auxiliary stand 61 and the lock mechanism frame 71. As the unlocking operation shaft 78 moves, the lock angle 74 moves in the same direction as the unlocking operation shaft 78.

  Finally, the lock 75 exposed from the opening 610 of the auxiliary stand 61 is screwed to the base 41. Through the above steps, the assembly of the lock mechanism 7 and the attachment of the lock mechanism 7 to the auxiliary stand 61 and the base portion 41 are completed.

  Next, fixing of the auxiliary stand 61 to the fall prevention position and the movement allowable position by the lock mechanism 7 will be described. As shown in FIG. 4, the lock spring 72 urges the lock angle 74 toward the base portion 41 in a state where the auxiliary stand 61 is positioned at the fall prevention position. The auxiliary stand 61 is fixed at the fall prevention position by engaging with the convex portion 415.

  When the lock release knob 79 attached to the lock release operation shaft 78 is operated from the base portion 41 side to the auxiliary stand 61 side in a state where the auxiliary stand 61 is fixed at the fall prevention position, the force is larger than the urging force of the lock spring 72. The lock angle 74 is moved to the auxiliary stand 61 side. As a result, the lock mechanism 7 releases the engagement between the lock angle 74 and the convex portion 415 of the base portion 41 and releases the fixation of the auxiliary stand 61 to the fall prevention position. When the auxiliary stand 61 is rotated in this state, the auxiliary stand 61 is displaced from the fall prevention position to the movement allowable position.

  As shown in FIG. 5, the lock spring 72 biases the lock angle 74 toward the caster part 412 side of the base part 41 in a state where the auxiliary stand 61 is located at the movement allowable position. The auxiliary stand 61 is fixed to the movement allowable position by engaging with the opening 413 of the base portion 41.

  When the lock release knob 79 attached to the lock release operation shaft 78 is operated from the caster 51 side to the auxiliary stand 61 side while the auxiliary stand 61 is fixed at the movement allowable position, the lock is locked with a force larger than the urging force of the lock spring 72. The angle 74 is moved to the auxiliary stand 61 side. As a result, the lock mechanism 7 releases the engagement between the lock angle 74 and the opening 413 of the base portion 41 and releases the fixation of the auxiliary stand 61 to the allowable movement position. When the auxiliary stand 61 is rotated in this state, the auxiliary stand 61 is displaced from the movement allowable position to the fall prevention position.

  As described above, the auxiliary stand 61 is located at each of the fall prevention position and the movement allowance position, and the lock angle 74 of the lock mechanism 7 is engaged with each of the convex portion 415 and the opening 413 to prevent the fall. The position and the movement allowable position are fixed. At this time, the lock mechanism 7 is housed inside the auxiliary stand 61, the lock angle 74 and the convex portion 415 are in contact with each other, and the lock angle 74 is inserted into the opening 413. The contact area between 415 and the opening 413 can be increased. Thereby, the stand 1 can be provided with a robust locking mechanism 7 that does not break even when stress is applied due to the application of a strong force or aging.

  Further, since the user can operate the lock release knob 79 and rotate the auxiliary stand 61 with one hand, the auxiliary stand 61 can be easily displaced from one of the fall prevention position and the movement allowable position to the other.

  In addition, the stand 1 can prevent the display member 2 from tipping in the front direction and the back direction while the auxiliary stands 61 to 64 are fixed at the tipping prevention positions. In a state where the auxiliary stands 61 to 64 are fixed at the movement allowable positions, the stand 1 is configured to be movable. In particular, since the display member 2 is viewed from the side, the width is narrow, so that the stand 1 can be easily moved even in a narrow place.

  In the embodiment described above, the lock release knob 79 is operated and the auxiliary stand 61 is manually rotated, so that the fall prevention position and the movement allowance position are released and displaced from one to the other. However, by urging the lock spring 72 in advance, the locking of the toppling prevention position and the movement allowable position is released simply by operating the lock release knob 79, and the structure is displaced from one to the other by the urging force of the lock spring 72. It is good.

  A stand 81 according to the second embodiment will be described with reference to the drawings. As shown in FIG. 6, the unlocking operation shaft 878 is different from the stand 1 according to the first embodiment in that it passes through the upper surface and the bottom surface of the auxiliary stand 861. Only the differences will be described below.

  As shown in FIG. 6, the auxiliary stand 861 has long holes 8613 formed on the upper surface and the lower surface of the main body portion 8611.

  The lock mechanism frame 871 of the lock mechanism 87 is a long casing, and an opening 8712 is formed at the end in the longitudinal direction. The lock mechanism frame 871 has long holes 8713 formed on the upper surface and the lower surface of the housing.

  The unlocking operation shaft 878 passes through the long hole 8613 of the auxiliary stand 861 and the long hole 8713 of the lock mechanism frame 871.

  As described above, the stand 81 includes the lock release knob 879 in the vertical direction of the auxiliary stand 861 in a state where the auxiliary stand 861 is fixed at the fall prevention position and the movement allowable position. Therefore, the user displaces the auxiliary stand 861 from one of the fall prevention position and the movement allowable position by rotating the auxiliary stand 861 with the other hand while operating the lock release knob 879 with one hand. it can.

  A stand 91 according to a third embodiment will be described with reference to the drawings. As shown in FIG. 7, the stand 91 is different from the stand 1 according to the first embodiment in that the lock mechanism 97 is accommodated in the base portion 941. Only the differences will be described below.

  The base portion 941 has long holes 9613 formed on both side surfaces of the main body portion 9411.

  The lock mechanism 97 is housed inside the base portion 941 with the lock spring 972 disposed on the base portion 941 side and the lock angle 974 disposed on the auxiliary stand 961 side.

  In addition, on the lower surface of the end portion of the main body portion 9611 of the auxiliary stand 961, an accommodating portion (a convex portion of the present invention) that protrudes downward through an opening (corresponding to a second engaging portion of the present invention) 9615. 9616 is formed. In addition, a convex portion (corresponding to the first engagement surface of the present invention) 9415 (formed in the back of the accommodating portion 9616 is formed inside the main body portion 9611 when viewed from the opening portion 9610. The upper surface of 9415 (corresponding to the first engagement surface of the present invention) is formed so as to be substantially parallel to the lower surface of the main body portion 9611.

  As described above, the stand 91 includes the lock release knobs 979 on both side surfaces of the base portion 941 in a state where the auxiliary stand 961 is fixed at the fall prevention position and the movement allowance position.

  Further, as shown in FIG. 7A, the lock spring 972 biases the lock angle 974 toward the auxiliary stand 961 in a state where the auxiliary stand 961 is positioned at the fall prevention position, so that the lock mechanism 97 has the lock angle 974. Engages with the convex portion 9415 of the auxiliary stand 961 to fix the auxiliary stand 961 in the fall prevention position.

  When the lock release knob 879 is moved from the auxiliary stand 961 side to the base portion 941 side while the auxiliary stand 961 is fixed at the fall prevention position, the lock angle 974 is moved to the base portion with a force larger than the urging force of the lock spring 972. Move to the 941 side. As a result, the lock mechanism 97 releases the engagement between the lock angle 974 and the convex portion 9415 of the auxiliary stand 961 to make the auxiliary stand 961 rotatable.

  Further, as shown in FIG. 7B, the lock spring 972 biases the lock angle 974 toward the accommodating portion 9616 side of the auxiliary stand 961 in a state where the auxiliary stand 961 is positioned at the movement allowable position. The lock angle 974 engages with the opening 9615 of the auxiliary stand 961 to fix the auxiliary stand 961 at the allowable movement position.

  When the lock release knob 979 is moved from the auxiliary stand 961 side to the base portion 941 side in a state where the auxiliary stand 961 is fixed at the movement allowable position, the lock angle 974 is moved to the base portion with a force larger than the urging force of the lock spring 972. Move to the 941 side. As a result, the lock mechanism 97 releases the engagement between the lock angle 974 and the opening 9615 of the auxiliary stand 961 to make the auxiliary stand 961 rotatable.

  For this reason, the user rotates the auxiliary stand 861 with the other hand while operating the lock release knob 979 toward the auxiliary stand 961 with one hand, so that the auxiliary stand 961 is set to the fall prevention position and the movement allowable position. It can be displaced from one to the other.

  The above description of the embodiment is to be considered in all respects as illustrative and not restrictive. The scope of the present invention is shown not by the above embodiments but by the claims. Furthermore, the scope of the present invention is intended to include all modifications within the meaning and scope equivalent to the scope of the claims.

DESCRIPTION OF SYMBOLS 1,81,91 ... Stand 3 ... Support | pillar 41-44,941 ... Base part 51-54 ... Caster 61-64, 861,961 ... Auxiliary stand 7, 87, 97 ... Lock mechanism 74,974 ... Lock angle 413,9615 ... Openings 415, 9415 ... convex

Claims (5)

A stand that supports and moves the display member,
A column supporting the display member;
A base portion for supporting the column;
A movable caster provided below an end of the base portion;
An auxiliary stand provided at the end, between a fall prevention position extending from the end and contacting the floor, and a movement allowable position bending from the end and separating from the floor An auxiliary stand configured to be freely rotatable;
A locking mechanism for fixing the auxiliary stand at each of the fall prevention position and the movement allowance position, wherein the auxiliary stand is engaged with the first engagement portion in a state where the auxiliary stand is located at the fall prevention position; A locking mechanism having an engaging member that engages with the second engaging portion in a state where the movable engaging position is located at the movement allowable position,
The auxiliary stand and the base portion are provided with the lock mechanism attached to one inside and the first engaging portion and the second engaging portion formed on the other. The first engagement portion has a first engagement surface substantially parallel to an extending direction in which the auxiliary stand extends from the end portion,
The engagement member has a second engagement surface substantially parallel to the extending direction,
2. The stand according to claim 1, wherein the second engagement surface is in contact with the first engagement surface when the auxiliary stand is positioned at the fall prevention position. The base portion is provided with a convex portion for providing the casters below the end portion,
The second engagement portion is an opening formed above the convex portion,
The stand according to claim 1 or 2, wherein the engaging member is inserted into the second engaging portion when the auxiliary stand is located at the movement allowable position. The lock mechanism is further provided with an operation member that is attached to the inside of the auxiliary stand and that allows the auxiliary stand to be operated to be fixed and released to the fall prevention position and the movement allowable position.
The stand according to any one of claims 1 to 3, wherein the operation member is provided on a side surface of the auxiliary stand. The lock mechanism includes a spring that urges the auxiliary stand toward the base portion, and the urging force of the spring causes the engagement when the auxiliary stand is located at each of the fall prevention position and the movement allowable position. A joint member is engaged with each of the first engagement portion and the second engagement portion, and the auxiliary stand is fixed at the fall prevention position and the movement allowable position,
The stand according to claim 4, wherein the operation member urges a force in a direction opposite to the urging force of the spring by an operation.