KR0158094B1 - Multistep ascent/descent position decision device for blackboard - Google Patents

Abstract

The present invention relates to a lifting device for positioning the opening and closing blackboard, the support plate 51 attached to the augmented frame body 11, the lever 52 is hinged to the shaft pin 53 so as to be rotatable to the support plate 51 and A pair of rod members coupled to the shaft pin 53 of the lever 52 and the coupling element 54 and extended to the boundary position of the shaft frame body 12 according to the rotation operation of the lever 52 to symmetrically swing ( 55) one end is hinged at both ends of the rod member 55, and the link member 56 is operated to link the center pin 58 of the support 57 to the shaft, and the other end of the link member 56 is hinged. The locking pin 60 to be coupled, the spring 59 for elastically supporting the lock pin 60, and the height of the auxiliary teaching member 30 and the main blackboard 20 to match or at the upper and lower portions of this position The main frame 20 is provided with a vertical frame 70 for accommodating the lock pin 60 by forming the engaging holes 71, 72, 73 at multiple intervals at predetermined intervals. Division by the height of the training material 30 comprises a matched position, to which the main board (20) can be fixed in each position by a multi-stage elevated height, and lowered state.

Description

Multi-level lifting position determining device for raising and lowering

1 is a front view illustrating a partially cut-off installation state of the present invention.

2 is an enlarged view of the main part operating state of FIG.

3 is a main view showing the coupling state of the lever and the rod member.

Figure 4 is a cross-sectional view showing a state in which the present invention is installed.

* Explanation of symbols for the main parts of the drawings

10: frame part 20: the main blackboard

30: auxiliary training member 40: lifting means

50: positioning means 51: support plate

52: lever 55: rod member

56 link member 60 lock pin

70: vertical frame 71,72,73: locking hole

The present invention relates to a lifting position determining device of the opening and closing blackboard, and more particularly, it is invented so that the operation position of the opening and closing blackboard can be fixed detachably over several steps in the vertical direction.

The blackboard is mainly used for writing in education. To improve the learning effect, in recent years, a plurality of educational members having various auxiliary functions have been installed at the same time. It is a situation that a so-called opening and closing blackboard is widely selected to be able to rotate and immediately perform the supplementary education of necessary contents.

The opening and closing blackboard is divided into a sliding type which is linearly moved left and right like a rail type and a sliding type which is pivoted about a point to pivot (PIVOT), and these are collectively called an opening and closing blackboard.

In addition, the auxiliary educational member is a board-shaped board auxiliary member such as a board (BOARD) that contains the learning contents necessary for lectures in schools and classrooms, and is installed on one side or both sides of the main blackboard located at the center. Posted by attaching a text frame (for example, manuscript form), a 5 line for music education, a blackboard, a memo paper, or various educational materials for teaching lines, writing, and correction for drawing. Select the contents according to the education task selection and purpose of the educator, such as a bulletin board to enable writing, a white board to allow writing by an aqueous pen, and a screen board (OHP) to perform screen education by a projector or a light register. If necessary, it is installed to open and close.

In addition, even in the use of the opening and closing blackboard, it is also widely used in recent years to provide a lifting means for adjusting the height in a desired state according to the condition of the students and lecturers.

As the lifting means for adjusting the height, a counterweight in balance with the board can be installed, such as the contents of the inventor of the present invention (Patent No. 64161) (see FIG. 1), to maintain a desired height without power. The way of doing so is known.

In addition, although not shown, as another embodiment of the lifting means, instead of installing a counterweight to balance the load with the blackboard, it is known that the structure is provided with a braking means that uses the elasticity of the spring and stops the blackboard at the required position. There is a bar.

The lifting board equipped with the counterweight and the spring for maintaining the balance as described above has a disadvantage that the user must artificially operate the height adjustment.

Therefore, it has also been proposed to automatically lift and move the blackboard by the contact of the switch using the power of the motor.

In the lifting type blackboard equipped with the lifting means for height adjustment as described above, it is very important to provide a fixing means for temporarily fixing the blackboard (the main blackboard in the present invention), which is the object of lifting, at a predetermined position. It is important to keep the height of the main blackboard and the auxiliary educational members installed on both sides of the main board.

When the rail-type educational member is used, the rail groove or rail to which the rail-type educational member is moved is integrally formed in the frame supporting the upper and lower ends of the blackboard, and the frame supporting the blackboard and the fixed frame supporting the rail-type educational member Only if you keep the height of the regular rail-type teaching member will be able to move to the front of the blackboard.

Therefore, as the inventor of the present application (Korean Patent No. 94-39734), the position of the blackboard is maintained at the same height as the auxiliary education member located on both sides by the operation of the lever, so that the auxiliary education member 30 is smooth. It is proposed that the positioning means is provided so that it can be rotated or slid.

Therefore, it was possible to smoothly move the case of the rail-shaped teaching member to the front side of the main blackboard on the center side while the heights were matched.

In addition, even in the case of the auxiliary training member to be a rotation type was to be fixed in position at the time of training in the rotated state by the fixing means provided on the main blackboard and rotated in position.

However, in the case of the positioning means according to the above-mentioned invention, the auxiliary teaching member and the main blackboard lifted from the center side are configured to be positioned only at a position where they are aligned in a straight line.

Therefore, there is a disadvantage that the lifting and lowering is not made at a predetermined position (for example, the dashed-dotted line portion in FIG. 1) where the auxiliary teaching member does not need to be operated.

An object of the present invention is to provide a lifting and closing opening and closing blackboard that can adjust the stroke of the main blackboard to be lifted by a simple lever operation to the most convenient position for the user to use and move it freely step by step.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

The present invention provides a frame body (10) having a center frame (11) at the center and a side frame (12) at both sides of the center frame (11) so as to be detachable from the boundary thereof. A main blackboard 20 installed in the center frame 11 of the frame part 10 toward the front; Secondary education member 30 is located on both sides of the main blackboard 20 and moved to the front of the main blackboard 20 in a state surrounded by the side frame body 12; Elevating means (40) for elevating and moving the central frame (11) to which the main blackboard (20) is attached; Wherein the positioning means 50 for fixing the lifting position of the main blackboard 20 to match the position of the auxiliary teaching member (30) is provided; The positioning means (50) includes a support plate (51) attached to the center frame (11), a lever (52) to which the shaft pin (53) is hinged to the support plate (51), and the lever (52). A pair of rod members 55 coupled to the shaft pin 53 of the coupling element 54 and extending to the boundary position of the side frame body 12 in response to the rotation operation of the lever 52, which are symmetrically moved. One end is hinged at both ends of the 55 and the link member 56 is linked to the center pin 58 of the support 57, and the lock pin 60 is hinged to the other end of the link member 56. ), A spring 59 for elastically supporting the lock pin 60, and the position where the height of the auxiliary teaching member 30 and the main blackboard 20 coincide so that the lock pin 60 is hooked to or from this position It comprises a vertical frame 70 formed in a plurality of stages engaging holes 71, 72, 73 at predetermined intervals at the top and bottom of the.

The frame part 10 is located at the front of the school and classroom, etc. to fix the main blackboard 20 and the auxiliary education member 30 therein, or to support the movement to guide the guide.

The frame part 10 has a central frame 11 supporting the upper and lower ends in a state where the main blackboard 20 is fixed at the center, and various auxiliary educational members 30 for assisting the both sides of the central frame 11. ) Is divided into a side frame body 12 for guiding or guiding movement, and is separated from the boundary so that the center frame body 11 is installed to be movable up and down.

The main blackboard 20 is a writing board to be fixed to the front of the center frame 11 so that the writing is made with writing instruments such as chalk on the front, occupy a main area.

And, both sides of the main blackboard 20, the auxiliary education member 30 is moved in a state supported by the side frame body 12 is located.

The auxiliary teaching member 30 may be divided into a pivot type of the hinge pivot type, and a slide type to slide left and right.

That is, in the state positioned on both sides of the main blackboard 20 to form a rail groove and a rail that is dug into the center frame 11 so that the sliding and moving in parallel.

Therefore, the side frame body 12 fixed to both front sides of the lecture room, etc., can move the auxiliary teaching members 30 horizontally from side to side, and the center frame body 11 positioned between the side frame bodies 12. Is installed to enable the vertical drive by the lifting means 40, if necessary.

The lifting means 40 includes all the functional means for driving the center frame 11 of the frame portion 10 up and down, can be divided into manual and power type.

As an example of the manual lifting means 40, the counterweight and the main board 20 balance the weight of each other, thus exposing a small external force to break such weight balance, thereby exemplifying a configuration in which the position is manually adjusted by the operator manually. can do.

In addition, in the case of the power type to be elevated by the power of the motor, the balance is also good to be installed at this time.

Then, the positioning means 50 is installed as a means for matching the height of the center frame 11 and the side frame body 12 when the auxiliary teaching member 30 is slid to the front of the main blackboard (20).

Therefore, the auxiliary training member 30 is operated to slide along the rail groove and the like to be trained at the optimal training position.

That is, the main blackboard 20 moves to the desired height according to the physical condition (height height) of the student or lecturer, and in the course of teaching, the auxiliary teaching member 30 provided on both sides of the main blackboard 20 as necessary to the center. When using it, the state of matching the height of the main blackboard 20 from the auxiliary teaching member 30 to the position fixed by the operation is the same as the inventors of the present application.

In the present invention, the most important feature of the configuration is to match the height of the auxiliary teaching member 30 and the main blackboard 20, and the main blackboard 20 to be fixed in multiple stages, including the state, the height adjusted up and down. It is to configure the positioning means 50 so as to be removable.

The configuration of this positioning means 50 is shown in detail in FIGS.

According to FIG. 1, it installs in the state which exposed the lever 52 to the outer side in the position which a lecturer's hand can reach mainly on the lower side of the center frame 11, and both sides at once by the rotation operation of this lever 52. In each of the multi-stage, the lock pin 60 is shown in the locking holes 71, 72, 73 so as to fix the position of the main blackboard 20 is shown.

At this time, the lever 52 is coupled to the support plate 51 on the approximately center side of the center frame 11, the center frame 11 is a hollow cross-section of the channel-shaped synthetic resin and aluminum extrusions into the shaft pin (53). ) Is positioned in connection with the lever 52, the rod member 55 is extended in the longitudinal direction of the center frame body is installed to the approximately boundary position of the side frame body 12.

In addition, the shaft member 53 and the rod member 55 are moved by the coupling element 54 for the expansion and contraction of the rod member 55 by swiveling the lever 52 so as to symmetrically spread outwardly or inwardly. Hinged.

3 shows, as an embodiment of this coupling element 54, hinge coupling the rod member 55 and the shaft pin 53 with the pin 54a.

Therefore, according to this configuration, when the lever 52 is rotated, the shaft pins 53 connected to the lever 52 are rotated together, and the pins 54a for coupling the rod members 55 on both sides are moved. The pair of rod members 55 are symmetrically operated at a tangential distance corresponding to the displacement distance.

Both ends of the rod member 55 are hinged to the link member 56, which is linked to the axis of the center pin 58 of the support (57).

The lock pin 60 is hinged to the other end of the link member 56 in a state in which the lock pin 60 is elastically supported by the spring 59.

Therefore, when the rod member 55 linearly symmetrically rotates with the rotation of the lever 52, the link member 56 hinged to the distal end of the rod member 55 performs a link movement such as shiiso. As a result, the lock pin 60 is engaged with the locking holes 71, 72, 73 formed in the vertical frame 70, or is operated to release the locking pin 60.

The vertical frame 70 is installed to the rear of the auxiliary training member 30 is configured such that the appearance of the link member 56 and the lock pin 60 is not observed from the outside.

And, at least one of the engaging holes 71, 72, 73 formed in multiple stages in the vertical frame 70 is designed in such a position that the height of the main blackboard 20 and the auxiliary teaching member 30 is matched. By, to slide the auxiliary teaching member 30 to the horizontal position to the front position of the main blackboard 20 is configured to use.

Further, in the state where the heights of the main blackboard 20 and the auxiliary teaching member 30 coincide with each other, the other engaging holes 71 and 73 are formed at a predetermined distance on the upper side and the lower side thereof, thereby engaging the engaging hole ( The lock pin 60 is hung on the 71 and 73 so that the auxiliary teaching member 30 is horizontally moved to the front surface of the main blackboard 20 and moved again in the up and down direction as it is overlapped. You can also use a supplementary education element.

According to the experiment, it can be seen that the interval between the locking holes 71, 72, 73 is appropriate about 30 cm.

On the other hand, when the lock pin 60 is released from the locking holes 71, 72, 73 by the rotation of the lever 52, the lifting and lowering of the main board 20 is free, and the locking pin 60 is locked. The guide frame 70a is moved to the vertical frame 70 in a state where the end of the lock pin 60 is fitted in the vertical frame 70 in order to prevent the lifting and lowering from the locking position of the 71, 72 and 73. It is formed to extend in the vertical direction over the engaging holes (71) 72 (73).

As such, when the lock pin 60 is fitted to the positions of the locking holes 71, 72, 73, the main board 20 is not lifted or moved up and down, thereby fixing the position.

As the auxiliary teaching member 30, for example, a bulletin board for memo posting, or a screen board (aka OHP) such as a map or music education staff, a manuscript, or a screen that allows the image to be formed when using a scale, a projector, and a light register, etc. By providing supplementary educational materials based on dimensions, the contents of the contents necessary for education can be exposed to be located in front of the main blackboard so that the educational effect can be increased more quickly.

The auxiliary training member 30 of the rotation type is rotated around the hinge 31 installed on the upper and lower ends of the side frame body 12, the rail-type slide auxiliary training member 30 is formed on the front side only the contents necessary for training On the contrary, the secondary education member of the rotation type is used to form the contents necessary for the training on the front surface of the front of the main blackboard 20, both of which are rotated to the front of the main blackboard 20, and exposed to the back. It is different to be done.

Therefore, it is good to install the slide-type auxiliary main blackboard 30 and the rotational auxiliary teaching member 30 according to each use.

In addition, the main blackboard 20 is divided into a planar shape and a curved shape that is formed to be concave in the center, the shape of the elevating position according to the present invention may be selected in any form. However, only the curved form is preferred in terms of the reduction effect of the visual fatigue of the trainee.

The auxiliary teaching member 30 may be a fixed type, not a rotational or slide type.

According to the present invention as described above, the operation of matching the height of the auxiliary teaching member installed on both sides of the central blackboard and can be done accurately and quickly in one operation.

Therefore, the user to have a convenience and quick lectures are made.

In addition, including the position where the height of the main blackboard 20 and the auxiliary teaching member 30 is matched, the main blackboard 20 can be fixed in a multi-level detachable position in each of the elevated height, or lowered state. will be.

Claims (5)

A frame part 10 having a center frame 11 at the center of the front wall surface of the lecture room or the like, and a side frame body 12 at both sides of the center frame 11, the side frame bodies being detachable at their boundaries; A main blackboard 20 installed in the center frame 11 of the frame part 10 toward the front; Secondary education member 30 is located on both sides of the main blackboard 20 and moved to the front of the main blackboard 20 in a state surrounded by the side frame body 12; Elevating means (40) for moving up and down the center frame (11) to which the main blackboard (20) is attached; Wherein the positioning means 50 for fixing the lifting position of the main blackboard 20 to match the position of the auxiliary teaching member (30) is provided; The positioning means (50) includes a support plate (51) attached to the center frame (11), a lever (52) to which the shaft pin (53) is hinged to the support plate (51), and the lever (52). A pair of rod members 55 coupled to the shaft pin 53 of the coupling element 54 and extending to the boundary position of the side frame body 12 according to the rotation operation of the lever 52, and symmetrically swinging the rod members 55, One end is hinged at both ends of the member 55 and the link member 56 is linked to the center pin 58 of the support 57 by the shaft, and the lock pin is hinged to the other end of the link member 56 ( 60), and the lifting position of the elevating opening and closing blackboard, characterized in that it is provided with a vertical frame (70) through which the engaging hole is drilled to accommodate the lock pin (60). According to claim 1, wherein the vertical frame (70) of the auxiliary education member 30 and the height of the main blackboard 20 is matched or at the upper and lower portions of this position at the engaging holes 71, 72 ( Lifting positioning device of the elevating opening and closing blackboard, characterized in that 73) is formed by forming in multiple stages. The lifting pin positioning device of the elevating opening and closing board according to claim 1, wherein the lock pin (60) is elastically supported by a spring (59). According to claim 1, The coupling element 54 is the lifting position of the elevating opening and closing blackboard, characterized in that configured by hinged to the end of the lever rotation side of the rod member 55 and the shaft pin 53 by the pin (54a). Device. According to claim 1, wherein the vertical frame (70) is located on the back of the auxiliary teaching member 30, the locking holes (71) (72) (73) to prevent the separation of the lock pin (60), respectively Lifting positioning device of the elevating opening and closing blackboard characterized in that the guide groove (70a) is formed to extend in the vertical direction over.