JP6478954B2 - Wooden protective top for school desk - Google Patents

Description

  The present invention relates to a wooden protective top board for schoolchildren desks for protecting the top board of schoolchildren desks.

  DESCRIPTION OF RELATED ART Conventionally, what was described in patent document 1 is known as a wooden protective top board for school children's desks for protecting the top board of school children's desks. In this school tabletop wooden protective top plate, the side plates (1-1, 1-2, 1-3, 1-4) are provided on the protective top plate (1) to form a box shape. 1-2) is provided with mounting holes (3-1, 3-2, 3-3, 3-4). Then, the protective top plate (1) is fixed by covering the school table top (7) with the mounting bolt (4) and the mounting bracket (5), and the protective top (1) is placed on the school top table (7). Is mounted.

  According to this wooden protective top board for schoolchildren, the protective topboard (1) is fixed by covering the schoolchildren top board (7) with the mounting bolt (4) and the mounting bracket (5). The protective top plate (1) is simply mounted on the plate (7).

Utility Model Registration No. 3065796 (paragraphs [0005] to [0006], FIG. 1 and FIG. 2 (B))

  However, in the wooden protective top board for schoolchildren's desks described in Patent Document 1, the protective tops are fixed to the schoolchildren desk tops by tightening the mounting bolts. is there. In addition, since the school tabletop wooden protective top plate is formed in a box shape by providing a side plate on the protective top plate, if the mounting bolts are loosened, the school desk desk wooden protective top plate is easily detached from the schoolchild desk.

  This invention is made | formed in view of this conventional problem, and provides the wooden protective top plate for schoolchildren's desks which is hard to damage | damage the topplate of a schoolchildren's desk and is hard to come off.

  In order to solve the above-mentioned problem, the feature of the wooden protective top board for school children's desks according to claim 1 is a wooden protective top board for school children's desks that is mounted on the top board of the school children's desk and protects the top board. A top plate having a rectangular upper surface and covering the top plate; a side plate suspended from three side surfaces of the protective top plate; and the top plate between the protective top plate A side flange of the protective top plate that does not have the side plate is provided on the side of the protective top plate. It has a locking tool for mounting and locking the plate on the top plate.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 2 is that a concave groove is recessed along the side surface on the back surface of the protective top board in the vicinity of the side surface not having the side plate, The locking tool is a long stopper plate having a ridge inserted in the groove in the longitudinal direction, and one end portion or both end portions of the stopper plate are provided with through holes. Alternatively, a locking hole is provided in the longitudinal direction of the two side plates, and the stopper plate is locked to the protective top plate by a locking dowel inserted into the through hole and the locking hole. .

  The feature of the wooden protective top board for schoolchildren's desks according to claim 3 is that a long hole for removing the locking dowel is provided on one end side of the locking hole, and the long hole extends in the lateral direction inside the side plate. It has an opening.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 4 is that a concave groove is recessed along the side surface on the back surface of the protective top board in the vicinity of the side surface that does not have the side plate. The locking tool is a long stopper plate having a ridge inserted in the groove in the longitudinal direction, and one end portion or both end portions of the stopper plate are provided with through holes. Alternatively, a pin hole is recessed in the longitudinal direction of the two side plates. The pin hole is pressed outward from the side plate by a spring, and one end protrudes from the surface of the side plate to embed a locking pin. Then, one end of the locking pin is fitted into the through hole, and the stopper plate is locked to the protective top plate.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 5 is that the inner flange plate is provided with a groove portion facing the concave groove formed in the protective top board, and the stopper plate has The protrusions that are inserted into the grooves are formed.

  The feature of the wooden protective top board for schoolchildren desks according to claim 6 is that a first protective topboard part that covers most of the tops of the schoolchildren desks, and a second protective top board part that covers the rest of the tops A wooden protective top board for schoolchildren desks that is mounted on the top board and protects the top board, wherein the first and second protective top board portions are plate-shaped firsts having a rectangular upper surface. The top plate is inserted between the two protective top plates, the first and second side plates suspended from the three side surfaces of the first and second protective top plates, and the first and second protective top plates. A first and second inner flange plate projecting from the first and second side plates with a first and second gap, and the top plate and the first and second plates in the first and second gaps. An elastic body that separates the side plate is attached, and the first and second protective top plates are attached to the top plate by a locking tool provided on the first and second side plates. The first and second side plates are engaged with and locked. First and second mounting recess is recessed for accommodating the tool, is that the locking member from the surface of said 1,2 plate does not protrude when the locking of the locking device.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 7 is that, in the state where the first and second protective topboards are mounted on the top board of the schoolchildren desk, the locking tool is the top board. Is provided on the first and second side plates in the longitudinal direction or in the direction perpendicular to the longitudinal direction.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 8 is that the locking tool is a patchon lock.

  The feature of the wooden protective top board for schoolchildren's desks according to claim 9 is that the locking device has a substantially rectangular plate shape, and a locking portion that extends in a bee-like shape toward the leading edge at the distal end portion of the locking device. A shaft pin penetrating the rear end of the locking tool in a direction perpendicular to the surfaces of the first and second protective top plates is embedded in one of the first and second mounting recesses. The tool is rotatable around the shaft pin, and the locking tool is pressed by the spring toward the inner side of the first and second side plates, and the other of the first and second mounting recesses The locking recess is formed in the same shape as the locking portion and accommodates and locks the locking portion.

  A feature of the wooden protective top board for schoolchildren's desks according to claim 10 is that a stationery recess for preventing the stationery from falling is provided on one or both upper surfaces of the first and second protective top boards. is there.

  The wooden protective top board for schoolchildren's desks according to claim 11 is characterized in that a card concave portion capable of storing a card is provided on one or both surfaces of the first and second side plates, and the card concave portion is opened. A first inclined surface that is inclined inward and downward from the lower end of the part, a second inclined surface that is continuous from the first inclined surface and extends upward at a right angle to the first inclined surface, and is continuous from the second inclined surface. A third inclined surface that is further inclined inwardly and extends upward, and a fourth inclined surface that is continuously inclined downward from the third inclined surface to the upper end of the opening, wherein the third inclined surface is The virtual plane extending downward is positioned above the lower end of the opening.

In the wooden protective top board for schoolchildren's desks according to claim 1, the inner flange plate protrudes inward from three side boards or two side boards that are not adjacent to each other among the side boards suspended from the three side faces of the protective top board. A gap surrounded by the protective top plate, the side plate, and the inner flange plate is formed. Moreover, a locking tool is provided on the side surface of the protective top plate that does not have a side plate. Therefore, after the top plate of the schoolchildren desk is inserted into the gap from the side of the protective tabletop without the side plate, if the locking tool is attached, the protective tabletop is placed on the top plate of the schoolchildren desk and locked. It comes out. Thereby, the wooden protective top board for a schoolchild desk becomes difficult to come off from the schoolchild desk. Moreover, since a locking tool is provided in the side surface of the protection top plate which does not have a side plate, a locking tool does not damage the top plate of a schoolchild's desk. Therefore, according to the wooden protective top board for school children's desks, the top board of the school children's desk is hard to be damaged and is difficult to come off.
In addition, since the wooden protective top board for schoolchildren's desks is made of wood, it does not release harmful chemical substances and is kind to schoolchildren. In particular, if thinned wood is used, it can be made environmentally friendly and resources can be used effectively. It can also be used on desks for students (junior high school students and high school students) as well as school children.

  In the wooden protective top board for schoolchildren's desks according to claim 2, a long groove which is provided with a concave groove along the side surface on the back surface of the protective top board in the vicinity of the side surface which does not have the side plate of the protective top board, and is a locking tool The ridge formed on the stopper plate is inserted into the groove. Further, the stopper plate is protected by a locking dowel that is fitted into a through-hole formed in one or both ends of the stopper plate and a locking hole provided in the longitudinal direction of one or two side plates. Locked to the plate. Therefore, after inserting the top plate of the schoolchildren desk into the gap from the side of the protective top plate without the side plate, the convex strip of the stopper plate is inserted into the concave groove of the protective top plate, and the through hole and side plate of the stopper plate If the locking dowels are fitted into the locking holes, the stopper plate can be securely fixed to the protective top plate, and the wooden protective top plate for schoolchildren desks will not easily come off the schoolchildren desks.

  In the wooden protective top board for schoolchildren's desks according to claim 3, a long hole for removing the locking dowel is provided on one end side of the locking hole, and this long hole has an opening in the lateral direction inside the side plate. . Therefore, if the locking dowel is pushed into the long hole, the locking dowel can be easily taken out from the opening, and the wooden protective top board for the school desk can be removed from the school desk.

  In the wooden protective top board for schoolchildren's desks according to claim 4, a long groove which is provided with a concave groove along the side surface on the back surface of the protective top board in the vicinity of the side surface which does not have the side plate of the protective top board, and is a locking tool The ridge formed on the stopper plate is inserted into the groove. Also, one end of a locking pin embedded in a pin hole provided in the longitudinal direction of one or two side plates by being pressed by a spring is fitted into a through hole penetrating one end portion or both end portions of the stopper plate. Thus, the stopper plate is locked to the protective top plate. Therefore, after the top of the school desk is inserted into the gap from the side of the protective top without the side, the stopper strip is inserted into the concave groove of the protective top while pressing one end of the locking pin. Then, one end of the locking pin is fitted into the through hole of the stopper plate by a spring, so that the stopper plate can be securely fixed to the protective top plate, and the wooden protective top plate for school desks is difficult to be removed from the school desk. .

  In the wooden protective top board for schoolchildren's desks according to claim 5, a groove portion is provided in the flange plate so as to face the concave groove groove of the protective top plate, and a convex strip that is fitted into the groove portion is formed on the stopper plate. . Therefore, the stopper plate can be fixed not only to the protective top plate but also to the flange plate, and the wooden protective top plate for schoolchildren desks is more difficult to come off from the schoolchildren desks.

In the wooden protective top board for schoolchildren's desks according to claim 6, the first and second inner flange plates project inward from the first and second side plates suspended from the three side surfaces of the first and second protective top plates, First and second gaps surrounded by the first and second protective top plates, the first and second side plates, and the first and second inner flange plates are formed. And the top board of a schoolchild's desk is inserted in the 1st, 2 gap from the direction of the 1st, 2nd protection top board which does not have the 1st, 2 side board. Thereby, the wooden protective top board for a schoolchild desk becomes difficult to come off from the schoolchild desk. In addition, since the elastic body is attached to the first and second gaps, the top board of the school desk and the first and second side boards are not in direct contact, and the top board of the school desk is not easily damaged. Therefore, according to the wooden protective top board for school children's desks, the top board of the school children's desk is hard to be damaged and is difficult to come off.
In addition, since the wooden protective top board for schoolchildren's desks is made of wood, it does not release harmful chemical substances and is kind to schoolchildren. In particular, if thinned wood is used, it can be made environmentally friendly and resources can be used effectively. It can also be used on desks for students (junior high school students and high school students) as well as school children.

  In the wooden protective top board for schoolchildren's desks according to claim 7, in the state where the first and second protective tops are mounted on the tops of the schoolchildren desks, the locking tool is in the longitudinal direction of the tops of the schoolchildren desks. In this case, the first and second protective top plates can be slid in this longitudinal direction to attach to and remove from the top of the schoolchildren desk. In addition, when the locking tool is in the direction perpendicular to the longitudinal direction of the top of the schoolchildren desk, slide the first and second protective tops in the direction perpendicular to the longitudinal direction, Can be installed and removed.

  The wooden protective top board for schoolchildren's desks according to claim 8 is simple and inexpensive because it employs a patchon lock as a locking tool.

  In the wooden protective top board for schoolchildren's desks according to claim 9, the bee-like locking portion of the locking tool attached to one of the first and second mounting recesses is formed on the other of the first and second mounting recesses. Since it is latched by the stop recess, the first protective top plate and the second protective top plate are fixed. Furthermore, since the front end of the locking tool is pressed inward by the first and second side plates by the spring, it is difficult for the locking portion and the locking recess to be locked. The second protective top plate is more firmly fixed.

  In the wooden protective top board for schoolchildren's desks according to claim 10, if the stationery is stored in the stationery recess, the stationery is less likely to fall from the wooden protective tops for schoolchildren desks.

  In the wooden protective top board for schoolchildren's desks according to claim 11, the first inclined surface is inclined inward and downward from the lower end of the opening, and the virtual inclined surface extending downward from the third inclined surface is positioned above the lower end of the opening. Therefore, insertion and removal of the card can be facilitated. That is, when the card is inserted, the card can be slid upward along the third inclined surface, and the card can be easily inserted into the card recess. Further, after the card is inserted, the card does not come out of the card recess due to the first inclined surface. Further, when taking out the card, the card can be easily taken out from the concave portion of the card by sliding the card downward along the third inclined surface.

The perspective view which mounted the wooden protective top board for schoolchildren's desks of Embodiment 1, 2 on the schoolchildren desk. The perspective view of the wooden protection top plate for schoolchildren's desks of Embodiment 1,2. The front enlarged view of the wooden protective top board for schoolchildren's desks of Embodiment 1. FIG. FIG. 4 is a cross-sectional view taken along arrows IV-IV in FIG. 3 according to the wooden protective top board for schoolchildren's desks according to the first embodiment. The front enlarged view of the wooden protective top board for schoolchildren's desks of Embodiment 2. FIG. FIG. 6 is a cross-sectional view taken along the line VI-VI in FIG. The perspective view which mounted the wooden protective top board for schoolchildren's desks of Embodiment 3 on the schoolchildren desk. The perspective view of the wooden protection top plate for schoolchildren's desks of Embodiment 3. FIG. The partially expanded perspective view which concerns on the wooden protective top board for schoolchildren's desks of Embodiment 3, and contains a locking tool. The perspective view which mounted the wooden protective top board for schoolchildren's desks of Embodiment 3 on the schoolchildren desk. The partially enlarged view which concerns on the wooden protective top plate for schoolchildren's desks of Embodiment 3, and contains a card | curd recessed part. 11 is a cross-sectional view taken along arrow XII-XII in FIG. 11 according to the wooden protective top board for schoolchildren's desks according to Embodiment 3. FIG. The figure at the time of the card insertion to the card | curd recessed part concerning the wooden protective top board for schoolchildren's desks of Embodiment 3. FIG. The figure at the time of taking out the card | curd from a card | curd recessed part in connection with the wooden protective top board for schoolchildren's desks of Embodiment 3. FIG. The perspective view of the wooden protective top board for schoolchildren's desks concerning the wooden protective topboard for schoolchildren's desks of Embodiment 3. FIG.

  Embodiments 1 to 3 embodying the wooden protective top board for schoolchildren's desks according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view in which the wooden protective top board for schoolchildren's desks according to the first embodiment is mounted on the schoolchildren desk 90, and FIG. 2 is a perspective view of the wooden protective tops for schoolchildren's desks according to the first embodiment. As shown in FIG. 1 and FIG. 2, this school tabletop wooden protective top plate includes a protective top plate 60, side plates 61 and 64 (see FIG. 4), and an inner flange plate 62.

  The protective top plate 60 has a rectangular plate shape on the upper surface, and is placed on the top plate 91 of the schoolchildren desk 90 to protect the top plate 91. The two side plates 61 are suspended from side surfaces 60 a and 60 b that are not adjacent to each other, and the side plate 64 is suspended from a side surface 60 c that is adjacent to the side surfaces 60 a and 60 b of the protection top plate 60. The inner flange plate 62 protrudes inward from the side plate 61 in parallel with the protective top plate 60. A space surrounded by the protective top plate 60, the side plate 61, and the inner flange plate 62 forms a gap 63. The top plate 91 of the schoolchildren's desk 90 is inserted into the gap 63, so that the protective topplate 60 is not easily detached from the topplate 91 of the schoolchildren's desk 90.

  And the top plate 91 of the schoolchildren's desk 90 is inserted from the side surface 60d where the sideboards 61 and 64 are not suspended, and the protective topboard 60 is slid in the direction perpendicular to the longitudinal direction of the top panel 91. A protective top board can be attached to the top board 91 of the schoolchildren desk 90. A long stopper plate 65 is attached to the side surface 60d of the protective top plate 60 as a locking tool for mounting and locking the protective top plate 60 on the top plate 91. In the first embodiment, the side plate 64 is not provided with the inner flange plate 62, but the side plate 64 can also be provided with an inner flange plate. Further, an elastic body such as urethane sponge that serves as a cushioning material between the top plate 91 and the side plate 61 can be attached to the gap 63.

  As shown in FIGS. 3 and 4, a groove 60e is recessed along the side surface 60d in the vicinity of the side surface 60d of the protective top plate 60 and on the back surface of the protective top plate 60. The inner flange plate 62 is provided with a groove 62 a that is opposed to the groove 60 e formed on the protective top plate 60. Further, a locking hole 61 a is provided in the longitudinal direction of the two side plates 61, and a long hole 61 b is provided on one end side of the locking hole 61 a with an opening in the lateral direction inside the side plate 61. The long hole 61b is used for removing a locking dowel 66 described later.

  In the longitudinal direction of the stopper plate 65, convex grooves 65 a and 65 b fitted into the concave grooves 60 e and the groove portions 62 a are formed on opposite surfaces. Further, two through holes 65 c are provided at both ends of the stopper plate 65. The two through holes 65c are provided at positions corresponding to the two locking holes 61a. When the locking dowel 66 is fitted into the through holes 65c and the locking holes 61a, the stopper plate 65 is moved to the side plate 61. The protective top plate 60 can be mounted on the top plate 91 and locked.

  Since this locking dowel 66 is made of bamboo harder than wood and has a tapered outer shape that becomes narrower toward the tip, the stopper plate 65 can be securely fixed to the side plate 61 of the protective top plate 60. Further, the locking dowel 66 is fitted into the through hole 65c and the locking hole 61a so that the stopper plate 65 and the locking dowel 66 are flush with each other. Thereby, it becomes difficult to touch the locking dowels 66, and injuries of school children can be prevented. In Embodiment 1, through holes 65c are provided at both ends of the stopper plate 65, and locking holes 61a are provided in the two side plates 61, but only at one end of the stopper plate 65. It is also possible to provide the through hole 65 c and provide the locking hole 61 a only in one side plate 61. At this time, it is desirable that the surface of the side plate 61 corresponding to the other end of the stopper plate 65 is flush with the side surface 60 d of the protective top plate 60. Moreover, in the state where the wooden protective top board for schoolchildren desks is mounted on the topboard 91 of the schoolchildren desk 90 and used, it is desirable that the side board 64 is on the schoolchild side. And it is desirable that the vertical width of the side plate 64 is a length that does not block the opening of the storage unit for storing the textbooks and the like.

  A method for mounting the wooden protective top board for schoolchildren on the top 91 of the schoolchildren desk 90 will be described. First, the wooden protective top board for school children's desk is brought close to the top board 91 from the longitudinal direction and the vertical direction of the top board 91, and the top board 91 is fitted into the gap 63 from the side surface 60 d of the protective top board 60. Next, the convex strips 65a and 65b of the stopper plate 65 are fitted into the concave groove 60e and the groove portion 62a, and the stopper plate 65 is slid. Then, after aligning the through hole 65c and the locking hole 61a, the locking dowel 66 is fitted into the through hole 65c and the locking hole 61a so that the stopper plate 65 and the locking dowel 66 are flush with each other. Like that. However, when the locking dowel 66 protrudes from the stopper plate 65, the protruding portion is cut off. Thereby, the stopper board 65 is latched by the side board 61, and the wooden protective top board for schoolchild desks can be mounted on the top board 91, and can be latched. Further, in order to remove the wooden protective top board for schoolchildren from the topplate 91 of the schoolchildren desk 90, the locking dowel 66 is pressed from the through hole 65c and pushed into the locking hole 61a, and the locking dowel 66 is removed from the long hole 61b. Remove. Thereafter, the stopper plate 65 is slid and removed from the protective top plate 60. Finally, the wooden protective top board for schoolchildren's desks may be slid and removed from the topboard 91 of the schoolchildren desk 90.

  As an example of a method of using the wooden protective top board for schoolchildren's desks, a recess for preventing the stationery from falling can be provided on the protective top board 60. Further, a seal or the like may be affixed to the stopper plate 65, the side plate, or 6164, or a recess for storing a card or the like may be provided. In addition, since the wooden protective top board for schoolchildren's desks is made of wood, it does not release harmful chemical substances and is kind to schoolchildren. In particular, if thinned wood is used, it can be made environmentally friendly and resources can be used effectively. It can also be used on desks for students (junior high school students and high school students) as well as school children.

  In the wooden protective top board for schoolchildren's desks according to the first embodiment, out of the side plates 61 and 64 that are suspended from the three side surfaces 60a, 60b, and 60c of the protective top plate 60, the inner flange plate extends from the two side plates 61 that are not adjacent to each other. 62 projects from the inside, and a gap 63 surrounded by the protective top plate 60, the side plate 61, and the inner flange plate 62 is formed. A stopper plate 65 is provided on the side surface 60 d of the protective top plate 60 that does not have the side plates 61 and 64. Therefore, if the stopper plate 65 is attached after the top plate 91 of the schoolchildren desk 90 is inserted into the gap 63 from the direction of the side surface 60d of the protective topboard 60, the protective topboard 60 is mounted on the topboard 91 of the schoolchildren desk 90. Can be locked. Thereby, the wooden protective top board for a schoolchild desk becomes difficult to come off from the schoolchild desk 90. Further, since the stopper plate 65 is provided on the side surface 60d of the protective top plate 60, the stopper plate 65 does not damage the top plate 91 of the schoolchildren desk 90. Therefore, according to the wooden protective top board for school children's desks, the top board 91 of the school children's desk 90 is hardly damaged and is not easily detached.

  Further, in this wooden protective top board for schoolchildren's desks, a groove 60e is formed along the side surface 60d on the back surface of the protective top board 60 in the vicinity of the side surface 60d, and the convex strip formed on the long stopper plate 65. 65a is inserted into the groove 60e. Further, the stopper plate 65 is protected by a locking dowel 66 fitted into a through hole 65c provided at both ends of the stopper plate 65 and a locking hole 61a provided in the longitudinal direction of the two side plates 61. Locked to the plate 60. Therefore, after inserting the top plate 91 of the school desk 90 from the direction of the side surface 60d of the protective top plate 60 into the gap 63, the convex strip 65a of the stopper plate 65 is inserted into the concave strip groove 60e of the protective top plate 60, and the stopper plate If the locking dowel 66 is fitted into the through hole 65c of the 65 and the locking hole 61a of the side plate 61, the stopper plate 65 can be securely fixed to the protective top plate 60, and the wooden protective top plate for school desks is used for school children. It becomes difficult to come off the desk 90.

  Furthermore, in this wooden protective top board for school children's desks, a long hole 61b for removing the locking dowel 66 is provided on one end side of the locking hole 61a, and the long hole 61b has an opening in the lateral direction inside the side plate 61. doing. Therefore, if the latching dowel 66 is pushed into the long hole 61b, the latching dowel 66 can be easily taken out from the opening, and the wooden protective top board for schoolchildren can be removed from the schoolchildren desk 90.

  Further, in this wooden protective top board for school children's desks, a groove 62a is recessed in the flange plate 62 so as to face the recessed groove 60e of the protective top 60, and a protrusion 65b fitted into the stopper plate 65 in the groove 62a. Is formed. Therefore, the stopper plate 65 can be fixed not only to the protective top plate 60 but also to the flange plate 62, and the wooden protective top plate for schoolchildren desks is more difficult to come off from the schoolchildren desk 90.

  Next, the wooden protective top board for schoolchildren's desks of Embodiment 2 is demonstrated. As shown in FIGS. 1 and 2, the wooden protective top board for schoolchildren's desks according to the second embodiment uses side plates 71 instead of the side plates 61 of the first embodiment. About another structure, it is the same as that of the wooden protective top board for schoolchildren's desks of Embodiment 1, and shall use the same code | symbol. FIG. 5 is a front view of a wooden protective top board for schoolchildren's desks according to Embodiment 2, and FIG. 6 is a cross-sectional view. As shown in FIGS. 5 and 6, side plates 71 are suspended from side surfaces 60 a and 60 b of the protective top plate 60 that are not adjacent to each other, and the inner flange plate 62 is parallel to the protective top plate 60 inward from the side plate 71. Is projected. A space surrounded by the protective top plate 60, the side plate 71, and the inner flange plate 62 forms a gap 63.

  A pin hole 71 a is recessed in the longitudinal direction of the two side plates 71. A spring 72 is embedded in the pin hole 71a, and a locking pin 73 that is pressed outward of the side plate 71 by the spring 72 is embedded. Then, one end 73 a having a smaller diameter than the main body of the locking pin 73 protrudes from the surface of the side plate 71 and is stopped by the stop plate 74. Thereby, the locking pin 73 does not protrude from the surface of the side plate 71 any more. When one end 73a of the locking pin 73 is fitted into the through hole 65c, the stopper plate 65 is locked to the side plate 71, and the wooden protective top plate for schoolchildren desks is mounted on the top plate 91 and locked. be able to. Further, when one end 73a of the locking pin 73 is pushed in the direction of the pin hole 71a, the one end 73a of the locking pin 73 enters the pin hole 71a against the urging force of the spring 72. As a result, the stopper plate 65 can be slid to unlock the stopper plate 65 and the side plate 71. Other configurations are the same as those of the first embodiment.

  In the second embodiment, through holes 65c are provided at both ends of the stopper plate 65, and locking pins 73 pressed by springs 72 are respectively embedded in the two side plates 71 in the pin holes 71a. However, it is also possible to provide the through hole 65 c only at one end of the stopper plate 65 and provide the locking pin 73 only on one side plate 71. In this case, it is desirable that the surface of the side plate 71 corresponding to the other end portion of the stopper plate 65 is flush with the side surface 60d of the protective top plate 60, as in the first embodiment. In the second embodiment, the locking pin 73 that locks the stopper plate 65 and the side plate 71 is used, but a spherical ball may be used instead of the locking pin 73.

  A method for mounting the wooden protective top board for schoolchildren on the top 91 of the schoolchildren desk 90 will be described. First, the wooden protective top board for school children's desk is brought close to the top board 91 from the longitudinal direction and the vertical direction of the top board 91, and the top board 91 is fitted into the gap 63 from the side surface 60 d of the protective top board 60. Next, the convex strips 65a and 65b of the stopper plate 65 are fitted into the concave groove 60e and the groove portion 62a, and the one end 73a of the locking pin 73 is pressed so that all the locking pins 73 enter the pin holes 71a. The stopper plate 65 is slid while moving. When the through hole 65c reaches the locking pin 73, the one end 73a of the locking pin 73 is fitted into the through hole 65c by the biasing force of the spring 72. Thereby, the stopper board 65 is latched by the side board 71, and the wooden protective top board for school children's desks can be mounted on the top board 91, and can be latched. Further, in order to remove the wooden protective top board for schoolchildren from the top 91 of the schoolchildren desk 90, the stopper plate 65 is slid while pressing the one end 73a of the latching pin 73 from the through hole 65c. The one end 73a and the through hole 65c are disengaged. Thereafter, the stopper plate 65 is slid and removed from the protective top plate 60. Finally, the wooden protective top board for schoolchildren's desks may be slid and removed from the topboard 91 of the schoolchildren desk 90.

  In the wooden protective top board for schoolchildren's desks according to the second embodiment, one end 73a of the locking pin 73 embedded in the pin hole 71a provided in the longitudinal direction of the two side plates 71 by being pressed by the spring 72 is the stopper plate 65. The stopper plate 65 is locked to the protective top plate 60 by being inserted into through holes 65 c penetrating both ends. Therefore, after the top plate 91 of the school desk 90 is inserted into the gap 63 from the direction of the side surface 60d of the protective top plate 60, the stopper plate is inserted into the groove 60a of the protective top plate 60 while pressing one end 73a of the locking pin 73. When the protrusion 65 a of 65 is inserted and the stopper plate 65 is slid, one end 73 a of the locking pin 73 is inserted into the through hole 65 c of the stopper plate 65 by the spring 72, and the stopper plate 65 is attached to the protective top plate 60. It can be reliably fixed, and the wooden protective top board for schoolchildren desks is difficult to come off from the schoolchildren desk 90. Other actions and effects are the same as those of the first embodiment.

  Next, the wooden protective top board for schoolchildren's desks of Embodiment 3 is demonstrated. FIG. 7 is a perspective view of the schoolchildren desk wooden protective top plate placed on the schoolchildren desk 90. FIG. This wooden protective top board for schoolchildren desks consists of a first protective topboard part 1 that covers most of the top board 91 of the schoolchildren desk 90 and a second protective top board part 2 that covers the rest of the top board 91. ing. Then, the first protective top plate portion 1 and the second protective top plate portion 2 are slid in the direction perpendicular to the longitudinal direction of the top plate 91 so that the school desk 90 can be attached to and detached from the top plate 91. ing.

  FIG. 8 is a perspective view of the wooden protective top board for schoolchildren's desks as seen from the back side. The first and second protective top plates 1 and 2 have first and second protective top plates 10 and 20, first and second side plates 11 and 21, and first and second inner flange plates 12 and 22, respectively. Yes. The first and second protective top plates 10 and 20 are plate-like surfaces whose upper surfaces are rectangular, and serve to protect the top plate 91 by being mounted on the top plate 91 of the schoolchild desk 90. The first and second side plates 11 and 21 are suspended from the three side surfaces of the first and second protective top plates 10 and 20. The first and second inner flange plates 12 and 22 project inward from the first and second side plates 11 and 21 in parallel with the first and second protective top plates 10 and 20. The space surrounded by the first and second protective top plates 10 and 20, the first and second side plates 11 and 21, and the first and second inner flange plates 12 and 22 forms the first and second gaps 13 and 23. Form. The top plate 91 of the schoolchildren desk 90 is inserted into the first and second gaps 13 and 23, so that the first and second protective topplate parts 1 and 2 are not easily detached from the topplate 91 of the schoolchildren desk 90. In addition, the top plate 91 of the schoolchildren's desk 90 is inserted from the side surface portion where the first and second side plates 11 and 21 are not suspended.

  The urethane sponge 3 that is an elastic body is attached to the first and second gaps 13 and 23. The urethane sponge 3 serves as a cushion material between the top plate 91 and the first and second side plates 11 and 21. By this urethane sponge 3, the top plate 91 and the first and second side plates 11, 21 are not in direct contact, and the top plate 91 can be prevented from being damaged. Moreover, since the top plate 91 and the first and second side plates 11 and 21 are pressed by the urethane sponge 3 in the direction in which they repel, the top plate 91 is reasonably fixed to the first and second protective top plate portions 1 and 2. The force applied to the surfaces of the first and second side plates 11 and 21 in the vertical direction can be absorbed to some extent. In the present embodiment, the urethane sponge 3 has side surfaces of the first and second protective top plates 10 and 20 where the first and second side plates 11 and 21 are not suspended from the first and second gaps 13 and 23. Although it is attached to the part which opposes a part, if it is a grade which does not interfere with insertion of the top plate 91, you may attach to other parts. The elastic body is not limited to the urethane sponge 3, and synthetic rubber, a spring, or the like can be used.

  Further, the first and second mounting recesses 15 and 25 provided in the first and second side plates 11 and 21 which are perpendicular to the longitudinal direction of the top 91 of the schoolchildren desk 90 are provided with a patch 5 as a locking tool. Is stored and attached. By locking the patchon lock 5, the first and second protective top plate parts 1 and 2 are locked and placed on the top plate 91 of the schoolchildren desk 90. Further, when the patch lock 5 is locked, the patch lock 5 is prevented from protruding from the surfaces of the first and second side plates 11 and 21. Thereby, it becomes difficult for a schoolchild to touch the Patchon tablet 5, and an injury can be prevented.

  A method of mounting the first and second protective top plates 1 and 2 on the top 91 of the schoolchildren desk 90 will be described. First, the 2nd protection top plate part 2 is made to approach the top plate 91 from the longitudinal direction and the vertical direction of the top plate 91, and the top plate 91 is inserted in the 2nd gap | interval 23 from the side part in which the 2nd side plate 21 is not suspended. And attach. Next, the 1st protection top plate part 1 is made to approach the top plate 91 from the longitudinal direction and the vertical direction of the top plate 91, and the top plate 91 is made into the 1st clearance 13 from the side part where the 1st side plate 11 is not suspended. The first and second protective top plates 1 and 2 are brought into contact with each other. When the patch lock 5 is locked, the first and second protective top plate parts 1 and 2 are locked and placed on the top plate 91. In order to remove the first and second protective top plate parts 1 and 2 from the top plate 91 of the schoolchildren's desk 90, the first and second protective top plate parts 1 and 2 are slid after the lock of the patch lock 5 is released. Move and remove.

  FIG. 9 is a view of a locking plate 30 as a locking tool other than the Patchon lock 5. Even when the locking plate 30 is used, the first and second protective top plates 1 and 2 can be locked and placed on the top 91 of the schoolchildren desk 90. The locking plate 30 has a substantially rectangular plate shape, and a locking portion 30a extending in a bee-like shape toward the tip is formed at the tip. Further, a pin hole 30b is provided in the rear end portion of the locking plate 30 in a direction perpendicular to the longitudinal direction and in a direction perpendicular to the plate thickness direction. Further, a groove 30 c is recessed in the longitudinal direction at the rear end of the locking plate 30.

  The first mounting recess 15 of the first side plate 11 is provided with two pin holes 15 a and 15 b in a direction perpendicular to the surface of the first protective top plate 10. The pin hole 15b is provided inside the pin hole 15a, that is, on the first inner flange plate 12 side. A groove 15 c is recessed in the longitudinal direction of the first side plate 11 in the vicinity of the pin hole 15 b. Then, both ends of the pressing pin 32 are embedded in the two pin holes 15b through the coil 33a of the torsion spring 33 as a spring. Further, both ends of the shaft pin 31 are embedded in the two pin holes 15 a so as to penetrate the pin holes 30 b of the locking plate 30. At that time, one of the arms 33 b of the torsion spring 33 is fitted into the groove 30 c of the locking plate 30, and the other of the arms 33 b is fitted into the groove 15 c of the first mounting recess 15. As a result, the locking plate 30 is made rotatable about the shaft pin 31 and the tip portion is pressed inward of the first side plate 11 by the torsion spring 33.

  The second mounting recess 25 of the second side plate 21 is formed with a locking recess 25a having the same shape as the locking portion 30a of the locking plate 30 and having a slightly larger outer shape than the locking portion 30a. The locking portion 30a is housed and locked in the locking recess 25a. In addition, a release hole 25b for releasing the locking between the locking portion 30a and the locking recess 25a by inserting a finger or a screwdriver into the locking recess 25a and pulling up the locking portion 30a from the locking recess 25a. Is recessed in a half-moon shape. The locking plate 30 is prevented from protruding from the surfaces of the first and second side plates 11 and 21 when the locking plate 30 is locked. Thereby, it becomes difficult for a schoolchild to touch the locking plate 30, and an injury can be prevented.

  A method of mounting the first and second protective top plates 1 and 2 using the locking plate 30 on the top 91 of the schoolchildren desk 90 will be described. First, the 2nd protection top plate part 2 is made to approach the top plate 91 from the longitudinal direction and the vertical direction of the top plate 91, and the top plate 91 is inserted in the 2nd gap | interval 23 from the side part in which the 2nd side plate 21 is not suspended. And attach. Next, the 1st protection top plate part 1 is made to approach the top plate 91 from the longitudinal direction and the vertical direction of the top plate 91, and the top plate 91 is made into the 1st clearance 13 from the side part where the 1st side plate 11 is not suspended. Insert. And the latching | locking part 30a is raised to the outer side direction of the 1st side board 11 with a finger | toe, and the 1st, 2nd protection top plate parts 1 and 2 are contact | abutted. Finally, when the finger is released from the locking portion 30a, the locking portion 30a is housed and locked in the locking recess 25a, and the first and second protective top plate portions 1 and 2 are locked to It is mounted on. In order to remove the first and second protective top plate portions 1 and 2 from the top plate 91 of the schoolchildren's desk 90, a finger or a screwdriver is inserted into the release hole 25b and the locking portion 30a is pulled up from the locking recess 25a. The first and second protective top plate portions 1 and 2 may be slid and removed.

  FIG. 10 is a perspective view of another schoolchild desk wooden protective top plate mounted on the schoolchildren desk 90. FIG. This wooden protective top board for schoolchildren desks comprises a first protective topboard part 7 that covers most of the top board 91 of the schoolchildren desk 90 and a second protective top board part 8 that covers the rest of the top board 91. ing. And the 1st protection top board part 7 and the 2nd protection top board part 8 are made to slide in the longitudinal direction of the top board 91, and the top board 91 of the schoolchild desk 90 can be attached or detached now. In addition, the 1st, 2nd protection top-plate parts 7 and 8 are the same structures as the above-mentioned 1st and 2nd protection top-plate parts 1 and 2, The description is abbreviate | omitted.

  FIG. 11 is a front view of a card recess 40 that is recessed on one or both surfaces of the first and second side plates 11 and 21. The card recess 40 has a circular opening 40a, and the circular card 47 can be easily inserted and removed. And 40b is an opening part lower end and 40c is an opening part upper end. The card 47 can also be used to insert or turn over when the schoolchild has achieved the learning goal. In the present embodiment, the outer appearance of the card recess 40 is circular, but a rectangular card may be used instead of a rectangular card.

  As shown in FIG. 12, the card recess 40 has a first inclined surface 41, a second inclined surface 42, a third inclined surface 43, and a fourth inclined surface 44. The first inclined surface 41 is inclined inwardly and downwardly from the opening lower end 40 b, and the second inclined surface 42 is continuous from the first inclined surface 41 and extends upward at a right angle to the first inclined surface 41. The third inclined surface 43 is further inclined inward from the second inclined surface 42 and extends upward, and the fourth inclined surface 44 is continuously inclined from the third inclined surface 43 to the opening upper end 40c. doing. And the virtual surface 43a which extended the 3rd inclined surface 43 below is located above the opening part lower end 40b. Further, the second inclined surface 42 and the third inclined surface 43 intersect with each other along the intersection line L.

  A method of inserting the card 47 into the card recess 40 will be described with reference to FIG. As shown in FIG. 13A, the card 47 is inserted from the opening 40a, and the card 47 is pressed against the third inclined surface 43 with a finger. Then, the card 47 is pushed upward along the third inclined surface 43 as it is. In this state, the center of gravity G of the card 47 is located below the intersection line L. When the finger is removed from the card 47, the center of gravity G is located below the intersection line L, so that the card 47 falls while rotating counterclockwise in FIG. It will be in the state shown.

  In FIG. 13 (2), the first inclined surface 41 is inclined inward and downward from the opening lower end 40b, so that the card 47 does not jump out of the card recess 40. Further, since the fourth inclined surface 44 is inclined downward to the upper end 40c of the opening, even if the card 47 rotates counterclockwise in FIG. 13 (2) due to vibration, the upper end of the card 47 is the fourth inclined surface. 44 abuts against the card recess 40.

  In order to take out the card 47 from the card recess 40, as shown in FIG. 14 (1), the upper part of the card 47 is pressed against the third inclined surface 43 with a finger. As a result, the card 47 rotates clockwise in FIG. 14 (1), and the upper portion of the card 47 comes into close contact with the third inclined surface 43. Then, as shown in FIG. 14 (2), when the upper portion of the card 47 is pressed against the third inclined surface 43 and pushed down along the third inclined surface 43, the card 47 is moved along the virtual surface 43a. Go down. At this time, since the virtual surface 43a is located above the lower end 40b of the opening, the card 47 can be easily taken out from the opening 40a.

  FIG. 15: is a perspective view which shows an example of the usage method of this wooden protection top board for schoolchildren's desks. The first and second protective top plates 10 and 20 are provided with stationery recesses 55 and 56 for preventing the stationery from falling. The stationery recess 55 is a long groove having a semicircular cross section with a depth of 2 mm to 3 mm, and is suitable for placing a pencil, a mechanical pencil, or the like. The stationery recess 56 is a long groove having a trapezoidal cross section. In this stationery recess 56, a trapezoidal square wooden bill 56a is inserted. On the top surface of the wooden bill 56a, the name of the schoolchild and the learning target can be written. The wooden bill 56a is also included in the stationery.

  Further, deer leather 50 for preventing injury is attached to the four corners of the surfaces of the first and second side plates 11 and 21. In addition, since the urethane sponge 3 attached to the first and second gaps 13 and 23 can absorb the force applied to the first and second protective top plates 10 and 20 to some extent, injury can be prevented. Further, a card recess 40 is provided on the surface of the first side plate 11 and a seal 51 is affixed. The seal 51 is attached when the learning target is achieved. In addition, the card | curd recessed part 40 can be recessedly provided in the surface of the 2nd side board 21, and the sticker 51 can also be stuck. In this case, the instructor can easily grasp the achievement level of schoolchildren.

  In the wooden protective top board for school children's desks of the embodiment, the first and second side plates 11 and 21 suspended from the three side surfaces of the first and second protective top plates 10 and 20 to the first and second inner flange plates 12, 22 is projected inwardly, and the first and second gaps 13 surrounded by the first and second protective top plates 10 and 20, the first and second side plates 11 and 21, and the first and second inner flange plates 12 and 22, 23 is formed. Then, the top 91 of the schoolchildren desk 90 is inserted into the first and second gaps 13 and 23 from the direction of the first and second protective tops 10 and 20 that do not have the first and second side plates 11 and 21. Thereby, it becomes difficult to remove the wooden protective top board for schoolchildren desks from the schoolchildren desk 90. In addition, since the urethane sponge 3 is attached to the first and second gaps 13 and 23, the top board 91 of the school desk 90 and the first and second side boards 11 and 21 are not in direct contact with each other. The top plate 91 is hardly damaged. Therefore, according to the wooden protective top board for school children's desks, the top board 91 of the school children's desk 90 is hardly damaged and is not easily detached.

  Further, in this wooden protective top board for schoolchildren's desks, the patchon lock 5 and the locking plate 30 are the schoolchildren's desks in a state where the first and second protective topboards 1 and 2 are mounted on the top board 91 of the schoolchildren desk 90. When it is in the longitudinal direction of the 90 top plates 91, the first and second protective top portions 1 and 2 can be slid in the longitudinal direction so that the school desk 90 can be attached to and detached from the top plate 91. When the patchon lock 5 and the locking plate 30 are in a direction perpendicular to the longitudinal direction of the top plate 91 of the schoolchildren desk 90, the first and second protective top plate parts 1 and 2 slide in the direction perpendicular to the longitudinal direction. The school desk 90 can be attached to and detached from the top 91. In addition, if the Patchon tablet 5 is employ | adopted, it will be simple and cheap.

  Furthermore, in this wooden protective top board for schoolchildren's desks, a bee-like locking portion 30a of the locking plate 30 attached to the first mounting recess 15 is formed on the locking recess 25a formed on the other side of the second mounting recess 25. Since it is locked, the 1st protection top plate part 1 and the 2nd protection top plate part 2 adhere. Furthermore, since the tip of the locking plate 30 is pressed inward of the first side plate 11 by the torsion spring 33, the locking between the locking portion 30a and the locking recess 25a is difficult to release, and the first protective ceiling The plate portion 1 and the second protective top plate portion 2 are more firmly fixed.

  Moreover, in this wooden protective top board for school children's desks, if the stationery is stored in the stationery recesses 55 and 56, the stationery is less likely to fall off the wooden protective top boards for school children's desks.

  Furthermore, in this wooden protective top board for school children's desks, the first inclined surface 41 of the card recess 40 is inclined inward and downward from the opening lower end 40b, and the virtual inclined surface 43a extending downward from the third inclined surface 43 is the opening. Since it is located above the lower end 40b, the card 47 can be easily inserted and removed. That is, when the card 47 is inserted, the card 47 can be slid upward along the third inclined surface 43, and the card 47 can be easily inserted into the card recess 40. Further, after the card 47 is inserted, the card 47 does not come out of the card recess 40 by the first inclined surface 41. Further, when the card 47 is taken out, the card 47 can be easily taken out from the card recess 40 by sliding the card 47 downward along the third inclined surface 43.

  As mentioned above, although the wooden protective top board for schoolchildren's desks of the present invention was explained according to the embodiment, the present invention is not limited to these, and can be appropriately changed unless it is contrary to the technical idea of the present invention. Needless to say, this is applicable.

DESCRIPTION OF SYMBOLS 1, 7 ... 1st protection top plate part, 2, 8 ... 2nd protection top plate part, 3 ... Elastic body (urethane sponge) 5, 30, 65 ... Locking tool (5 ... Patchon lock, 30 ... Locking Plate, 65 ... stopper plate), 10 ... first protective top plate, 11 ... first side plate, 12 ... first inner flange plate, 13 ... first gap, 15 ... first mounting recess, 20 ... second protective top plate 21 ... second side plate, 22 ... second inner flange plate, 23 ... second gap, 25 ... second mounting recess, 25a ... locking recess, 30a ... locking portion, 31 ... shaft pin, 33 ... spring (torsion) Spring), 40 ... Card recess, 40b ... Lower end of opening, 40c ... Upper end of opening, 41 ... First inclined surface, 42 ... Second inclined surface, 43 ... Third inclined surface, 43a ... Virtual surface, 44 ... Fourth Inclined surface, 47 ... card, 55, 56 ... stationery recess, 60 ... protective top plate, 60a, 60b, 60c, 60d ... side surface 60e ... concave groove, 61, 64, 71 ... side plate, 61a ... locking hole, 61b ... long hole, 62 ... inner flange plate, 62a ... groove, 63 ... gap, 65a, 65b ... convex stripe, 65c ... through hole , 66 ... locking dowels, 71 a ... pin holes, 72 ... springs, 73 locking pins.

Claims (11)

A wooden protective top board for a school desk that is mounted on a top board of a school desk and protects the top board,
The top plate is inserted between a protective top plate that has a rectangular top surface and covers the top plate, a side plate that is suspended from three sides of the protective top plate, and the protective top plate. An inner flange plate projecting from the three side plates or the two side plates not adjacent to each other with a gap between
A wooden protective top board for schoolchildren's desks, characterized in that the side face of the protective top board that does not have the side board has a locking tool for mounting and locking the protective top board on the top board. A concave groove is recessed along the side surface on the back surface of the protective top plate in the vicinity of the side surface that does not have the side plate of the protective top plate,
The locking tool is a long stopper plate having a ridge inserted in the groove in the longitudinal direction,
A through hole is provided in one or both ends of the stopper plate, and a locking hole is provided in the longitudinal direction of one or two of the side plates,
The wooden protective top board for school children's desks according to claim 1, wherein the stopper plate is locked to the protective top board by a locking dowel inserted into the through hole and the locking hole.   The long hole for removing the said locking dowel is provided in the one end side of the said locking hole, and this long hole has an opening in the inner side direction of this side plate. Wooden protective top board for school desks. A concave groove is recessed along the side surface on the back surface of the protective top plate in the vicinity of the side surface that does not have the side plate of the protective top plate,
The locking tool is a long stopper plate having a ridge inserted in the groove in the longitudinal direction,
A through hole is provided in one or both ends of the stopper plate, and a pin hole is provided in the longitudinal direction of one or two side plates,
The pin hole is pressed outward by the spring by the spring, and one end protrudes from the surface of the side plate to embed a locking pin.
The wooden protective top board for school children's desks according to claim 1, wherein one end of the locking pin is fitted into the through hole, and a stopper plate is locked to the protective top board. In the inner flange plate, a groove portion is provided so as to be opposed to the concave groove formed in the protective top plate,
The wooden protective top plate for schoolchildren's desks according to any one of claims 2 to 4, wherein the stopper plate is formed with a ridge that is fitted into the groove. It consists of a first protective top plate that covers most of the top of the schoolchildren's desk and a second protective top plate that covers the rest of the top plate. A wooden protective top board for schoolchildren to protect,
The first and second protective top plate portions are plate-shaped first and second protective top plates whose upper surfaces are rectangular, and first and second side plates that are suspended from three side surfaces of the first and second protective top plates. And first and second inner flange plates projecting from the first and second side plates with first and second gaps between which the top plate is inserted between the first and second protective top plates. Have
An elastic body for separating the top plate and the first and second side plates is attached to the first and second gaps,
The first and second protective top plates are locked by mounting the first and second protective top plates on the top plate by the locking tools provided on the first and second side plates,
The first and second side plates are provided with first and second mounting recesses for storing the locking tools, and the locking tools protrude from the surfaces of the first and second side plates when the locking tools are locked. Wooden protective top board for school children's desks characterized by not.   In a state where the first and second protective top plate portions are mounted on the top plate of the schoolchildren's desk, the locking tool is the first or second in the longitudinal direction of the top plate or in the direction perpendicular to the longitudinal direction. The wooden protective top board for schoolchildren's desks according to claim 6, which is provided on a side plate.   The wooden protective top board for schoolchildren's desks according to claim 6 or 7, wherein the locking tool is a patchon lock. The locking tool has a substantially rectangular plate shape, and a locking portion that extends in a bee-like shape toward the tip is formed at the tip of the locking tool,
One of the first and second mounting recesses is embedded with a shaft pin that penetrates the rear end of the locking tool in a direction perpendicular to the surfaces of the first and second protective top plates. It can be rotated around the pin,
The locking member is pressed by the spring toward the inner side of the first and second side plates,
The other of the first and second mounting recesses is formed with a locking recess that has the same shape as the locking portion and that accommodates and locks the locking portion. The wooden protective top board for schoolchildren's desks in any one of 8.   The schoolchildren according to any one of claims 6 to 9, wherein a stationery recess for preventing the stationery from falling is formed on one or both upper surfaces of the first and second protective top plates. Wooden protective top board for desk. On one or both surfaces of the first and second side plates, a card recess capable of storing a card is provided,
The card recess includes a first inclined surface that is inclined inward and downward from a lower end of the opening, a second inclined surface that is continuous from the first inclined surface and extends upward at a right angle to the first inclined surface, A third inclined surface that is further inclined inward from the two inclined surfaces and extends upward; and a fourth inclined surface that is continuously inclined downward from the third inclined surface to the upper end of the opening,
11. The wooden protective top board for school children's desks according to claim 6, wherein a virtual plane obtained by extending the third inclined surface downward is located above the lower end of the opening.

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