JPS5921038Y2 - Mounting structure of chalk powder receiver on blackboard - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a mounting structure for a chalk powder receiver on a blackboard.

In other words, the chalk powder receiver can be installed extremely easily on the blackboard side without requiring any means such as screws or welding, and the chalk powder receiver can be firmly attached without any looseness, and the number of parts is small and each The mounting part can be easily manufactured, and the chalk powder receptacle can be attached to either the front or the front of the support frame into which the blackboard is fitted, so that assembly is extremely easy and can be carried out suitably. be.

Next, the embodiment shown in the drawings will be described.

B is a support frame having approximately the same length as the horizontal length of blackboard A,
The support frame B is formed to have an upwardly U-shaped cross section, and support pieces 8a and 8b are formed on the upper part of the support frame B, which are inward from the vertical front surface 1a and the rear surface 1b and project upward in parallel. The lower part of the blackboard A is press-fitted between both support pieces 8a and 8b so that it can be fixed, and the support piece 8a is provided above the front surface 1a and the rear surface 1b.

Engagement protrusion 2a so that it is slightly apart from 8b in the front and rear direction.
, 2b are provided to protrude upward, respectively, and the entire front and rear portions are formed symmetrically.

C is a chalk powder receiver having approximately the same length as the support frame B and a constant width, and a curved chalk receiving surface 9 is formed on the front part of the chalk powder receiving surface, facing the front surface 2a or the rear surface 2b. A vertical rear end surface 3 is formed at the rear of the chalk powder receiver C, and both engaging protrusions 2 of the support frame B are provided above the rear end surface 3.
A hook part 4 that can be fitted from above to both a and 2b is formed downward, and a protrusion 5 is provided at the lower part of the rear end surface 3 so that the lower part of the chalk powder receptor C protrudes forward. form.

D is a narrow-width, side-beam-shaped plate spring, and the other end of the iron plate spring D is formed with a hook-shaped hook 7 so that it can be hooked and engaged with the protrusion 5 of the chalk powder receiver C, and the one end is The hook portion 6 is formed in a bent manner so that it can be hooked onto any of the surface engagement protrusions 2a and 2b of the support frame B above.

In addition, in the figure, 10.10 is a hanging tool attached to the upper part of the blackboard A.

Therefore, the support frame B is attached to the blackboard A by press-fitting the lower part of the blackboard A between the support pieces 8a and 8b, and the hook part 4 of the chalk powder receiver C is engaged with the support frame B as shown in FIG. Engage with the projection 2a from above and join the rear end surface 3 side to the front surface 1a, then hook the hook 7 of the leaf spring D onto the projection 5 and pull the leaf spring D from the lower surface side of the support frame B to the rear surface 1b. When the hook portion 6 is pushed upward on the engagement protrusion 2b in accordance with the above, the spring force causes the engagement as it is, and the chalk powder receiver C can be assembled by being elastically engaged with the support frame B side.

In that case, it is preferable to install an appropriate number of leaf springs D.

Note that whether the blackboard A is one-sided or double-sided, the support frame B is symmetrical with no front and rear surfaces, so it can be mounted facing either direction. 2a and 2b, the chalk powder receptor C can be attached to either side.

In this way, the present invention fits the support frame B, which has a U-shaped cross section facing the road and can be fitted onto the lower edge and the other edge of the blackboard A, onto the lower edge of the blackboard, and forms an integral part of the support frame B. The front and rear surfaces 1a, lb and the support pieces 8a, 8b, etc. that are inwardly protruding upward in a parallel manner have the same and symmetrical shape, respectively, and the front and rear surfaces of the support frame B. A downward hook part 4 that can be fitted from above to either of the engaging protrusions 2a or 2b is formed on the upper part of the rear end surface 3 of the chalk powder receptor C that can be joined to either of the engaging protrusions 2a and 2b. 3
A forward-facing protrusion 5 is formed at the lower part of the plate spring D, and hook parts 6°7 that can engage with the engaging protrusions 2a, 2b and the protrusion 5 are formed at both ends of the side-faced leaf spring D. Since the structure is joined together, the surface engaging protrusions 2a and 2b of the support frame B into which the blackboard A is fitted
While hooking the hook part 4 on either of the leaf springs D
The hooking part 7 is connected to the projection 5, and the hooking part 6 is connected to the surface engaging projections 2a, 2.
It can be installed very easily by simply engaging the hook with either of the parts (b) and does not require any additional screws, and the chalk powder receiver can be firmly installed without wobbling due to the plate spring D. , the number of parts is small and each part can be easily manufactured, making mass production easy. Also, the support frame B can be easily attached to the blackboard A without having to move forward and backward, and the chalk powder receiver C can be attached to the support frame B. It has the characteristics that it can be easily attached to any type of device, can be easily assembled, and can be suitably implemented.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an overall perspective view;
Figure 2 shows a side view of the main parts, Figure 3 is an exploded perspective view of each part of Figure 2, Figure 4 is an exploded view of Figure 2, and Figure 5 is an explanatory diagram of the assembly. be. A... Blackboard, B... Support frame, 1a... Front, 1b
...Rear surface, 2a, 2b...Engaging protrusion, C...
Chalk powder receptor, 3... Rear end surface, 4... Hook portion, 5.
...Protrusion, D...Plate spring, 6.7...Hook part.

Claims (1)

[Scope of Claim for Utility Model Registration] The support frame B fitted to the lower edge of the blackboard A has the same length as the horizontal length of the blackboard A, and its cross section when viewed from the side forms an upward U-shape with front and rear sides symmetrical. It has a vertical plate-shaped front face 1a and a rear face 1b on its outermost side, and support pieces 8a and 8b are formed on the inner side and project upward in a parallel manner to form inner support pieces 8a and 8b. The lower part of the blackboard A is inserted and fixed between the support pieces 8a and the upper part of the front surface 1a and the rear surface 1b.
, sb and an upwardly directed engagement protrusion 2a slightly apart from each other in the front-rear direction;
2b is protruded from the support frame B, and the chalk powder receiver C is configured so that both the front and rear surfaces 1a and 1b of the support frame B can be joined to each other. A projection 5 is formed at the lower part of the rear end surface to engage with the upper engaging projections 2a and 2b on the front and rear surfaces 1a and lb of the support frame B. It features a flat plate part and a curved chalk receiving surface 9. The separate and narrow leaf spring D has a sidewall shape as a whole, and the tip of the horizontal part has a hook-like hook that engages with the lower protrusion 5 on the rear end surface of the chalk powder receptor C. A hook portion 6 is bent at the upper end portion of the vertically bent and standing side of the support frame 10, and can be hooked onto any of the engagement protrusions 2a or 2b of the support frame 10 from above. A structure for mounting a chalk powder receptor on a blackboard, which is formed by fixing the supporting frame B, the chalk pollen body C1, and the leaf spring D to the lower edge of the blackboard.