JPH0634997Y2 - tile - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a roof tile, which is premised to have a space maintained by a spacer with hooks when it is loaded into a kiln car or the like and fired. The present invention relates to a roof tile having a protrusion on which a hook of an attached spacer is hooked.

2. Description of the Related Art Conventionally, a spacer with a hook and a roof tile having a protrusion to which the hook is hooked as a space holder for firing roof tiles are known (for example, see Japanese Utility Model Publication No. 58-32157).

As an example, the roof tile 1 shown in FIG. 8 has a hook-shaped protrusion that is one-sided in the insertion direction (arrow A direction) of the spacer 2 with hooks at a position near the center end of the lower surface (valley surface) thereof. Along with the provision of the portion 3, there are provided vertical and horizontal concave groove portions 4 and 5 around the projection portion 3 for facilitating the inserting operation of the hooked spacer 2.

On the other hand, in the spacer 2 with hook, tapered comb teeth 2a are projected at a constant pitch in the longitudinal direction, and a hook portion 2b having a hook shape is formed at the tip of each comb tooth 2a. Then, the protrusion 3 of the roof tile 1 is sandwiched between the abdomen 2c and the back 2d of the two adjacent comb teeth 2a, 2a to maintain the gap (Fig. 9). That is, the spacer with hook 2 is inserted into the position of the vertical groove portion 4 adjacent to the protrusion 3 of the roof tile 1, and at the time when it is inserted to the deepest portion, it is substantially perpendicular to the inserting direction (direction of arrow A in FIG. 8). By laterally moving in any direction (the direction of arrow B), the front and rear surfaces of the protrusion 3 of the roof tile 1 are held by the abdomen 2c and back 2d of two adjacent comb teeth 2a, 2a as shown in FIG. To do. Then, the hook 2b is surely hooked to the lower jaw of the protrusion 3. Therefore, even if the kiln car loaded with the roof tiles 1 vibrates during traveling, or repeatedly moves or stops, shocks or shakes occur each time, and the spacer 2 with hooks does not detach from the roof tiles 1. There is no worry of accidents such as 1 ... falling over or falling.

Problems to be Solved by the Invention (1) The hooked spacer 2 is usually made of heat-resistant steel. However, if it is repeatedly used in the firing process of roof tiles exceeding 1000 ° C, it will become thinner and thinner due to oxidation weight loss. Normally, when it is used for about 3 years, it looks thin as shown by the dotted line in Fig. 9. As a result, the distance between the abdominal portion 2c and the back portion 2d of the comb teeth 2a becomes wider, and the roof tile 1 is loosened in its support. At the same time, the hook 2b is also thinned and its protrusion amount is reduced, so that the hook amount with the protrusion 3 is gradually reduced, and finally becomes even below zero. As a result, the spacer 2 with hook cannot perform its original function of preventing separation, and the spacer gradually comes out due to vibration when the kiln car or the like is shocked or shock or sway when the kiln car is stopped or stopped. I may end up doing it. In this way, the tiles 1 that have been unconstrained by the spacers 2 with hooks will immediately tilt, fall, or collapse, reducing the yield of the tiles. It may cause a big accident that takes a lot of time and effort to recover the production process. Therefore,
Accidental detachment of the spacer with hooks has become an important issue that must be resolved immediately.

(2) The cause of the accident that the spacer 2 with hooks comes off the protrusion 3 of the roof tile 1 is not limited to the thinning phenomenon of the spacer 2 with hooks. One reason is that it may not be formed into a size. In particular, when the roof tile 1 is formed, the protrusion 3 is formed into the concave groove portion 4,
Since it is equal to a product obtained by forcibly inflating the surplus viscosity due to 5, the movement (flow) of the viscosity at the time of molding is unreasonable, and the protruding portion 3 in the roof tile molding die is the deepest. Since it is a concave portion, it serves as a final escape area for the air, and the presence of this air may interfere with the formation of the projection 3 in the size and shape as planned.

In addition, recently, roof tiles have been made lighter and the amount of clay used has been reduced. As a result of the reduced amount of clay used, it is difficult to form the protrusions 3 in the size and shape as designed. .

(3) Conventionally, accidents like the above (1) sometimes occur, so as one countermeasure, the life of the spacer 2 with hooks is planned to be about 3 years, and it will not be used longer than that. I am doing it. Therefore, at first glance, the spacers with hooks that are likely to be used are uneconomically discarded, and this is also a problem to be solved.

(4) Therefore, an object of the present invention is to provide a roof tile in which the shape of the protrusion is improved in order to solve the above problems at once.

Means for Solving the Problems As a means for solving the problems of the above-mentioned prior art, the roof tile according to the present invention has a hooked spacer 2 as shown in a preferred embodiment in FIGS. 1 to 7 of the drawings. In the roof tile 1 having the protrusion 3 on which the hook 2b of the hook is hooked, the protrusion 3 is inclined in a direction (arrow B direction) substantially perpendicular to the inserting direction (arrow A direction) of the spacer 2 with hook, and the protrusion in the same direction. It is characterized in that the shape has a changed height.

Action Insert the spacer 2 with hooks into the position of the vertical groove 4 on the side of the roof 3 where the height of the protrusion 3 is low, and when reaching the deepest part, the protrusion amount of the protrusion 3 increases toward the high side. When laterally moving in a direction perpendicular to the direction (arrow B direction), the abdomen 2c and back 2d of the two adjacent comb teeth 2a, 2a in the process move the protrusion 3 of the roof tile 1
There is a position where it comes into contact with the front and back surfaces of and stops. If the spacer with hooks is directly inserted in that position, the hooks 2b of the spacers 2 with hooks will not be affected by the thinness of the spacers 2 with hooks or defective molding of the protrusions 3. The roof tiles 1 are held in a state where they are caught in the lower jaw and cannot be pulled out, and the space between the roof tiles is maintained.

That is, the thinness of the spacer 2 with hook is that the hook 2b also has the abdomen 2c and back as shown by the dotted line in FIG. 3 or FIG.
Since 2d can be thinned almost equally as well, if the abdomen 2c and the back 2d come into contact with the front and rear surfaces of the protrusion 3 to be pinched, the hook
2b is also surely caught on the protrusion 3 (Fig. 3). Similarly, even if the protrusion 3 of the roof tile 1 has some molding defects or distortions, unless it is a completely defective product, the abdomen 2c and the back 2d of the hooked spacer 2 have the protrusion 3 as described above.
When the hook 2b comes into contact with the front and rear surfaces of the projection 3 and is sandwiched, the hook 2b is reliably caught by the lower jaw of the projection 3 and is not detached.

Embodiment Next, an embodiment of the present invention shown in the drawings will be described.

First, the roof tile 1 shown in FIG. 1 is also inclined at the position of the central end of its lower surface (valley surface) so that the height gradually increases in the inserting direction of the hooked spacer 2 (direction of arrow A). (See FIG. 3), and is inclined so that the height gradually increases in the direction (arrow B direction) substantially perpendicular to the inserting direction (see FIG. 2). A protruding portion 3 having is provided. Further, on the periphery of the protrusion 3, that is, on both the left and right sides and the lower side, vertical and horizontal concave groove portions 4 and 5 are provided to facilitate insertion of the hooked spacer 2.

By the way, the protrusion 3 shown in FIG. 1 has a lateral width (X dimension) of 20 mm, a length (Y dimension) of about 24 mm, and the groove widths of the concave groove portions 4 and 15 of about 15 mm. Further, the height of the protrusion 3 is such that the change in height in the direction of the arrow B (inclination angle θ in FIG. 2) is about 1 to 3 mm in total, and as shown in FIG. The insertion position of the spacer 2 is slightly to the right of the central position of the protrusion 3 (closer to the side where the inclination angle θ is lower = the position of the spacer 2 with hook in FIG. 2) is the position of the average height of conventional protrusions. The protrusion 3 is molded with the following specifications.

Therefore, the spacer with hook 2 is inserted into the position of the groove 4 on the side of the protrusion 3 of the roof tile 1 where the inclination angle θ is low (on the right side in FIG. 2), and when it reaches the deepest portion, it moves laterally in the direction of the arrow B. When the spacer 2 with hooks is moved to a new state when moved, the position where the belly portion 2c and the back portion 2d of the comb tooth 2a come into contact with the front and rear surfaces of the protruding portion 3 and stop as shown in FIG. It is at the position of the spacer 2 with hook shown. Even when the hooked spacer 2 is used repeatedly in the firing process and becomes thin, the holding position of the roof tile 1 by the hooked spacer 2 can be gradually moved in the direction of arrow B in FIG. No harmful effect of thinning occurs. Therefore, the function of preventing the spacer 2 with hooks from coming off is sufficiently exerted, and there is no fear of the roof tile 1 tilting, falling, or collapsing.
Not only that, the service life of the hooked spacer 2 can be easily extended from about 3 years to about 5 to 6 years of service life without worrying about a functional failure, thereby improving its economical efficiency. Further, even if there is some defect or defect in the molding state of the protruding portion 3, the separation preventing function of the hooked spacer 2 can be exerted well without being greatly affected by such circumstances.

Other Embodiments (No. 1) The roof tile 1 shown in FIG. 4 has most of the shapes of the projections 3 and the concave grooves 4 and 5 in common with the embodiment of FIG. However, a structure in which the step portion of the protrusion 3 on the side where the inclination angle θ is low (right side in the figure) particularly in the direction substantially perpendicular to the inserting direction of the spacer with hooks is eliminated by the slope 6 connected to the groove bottom surface of the concave groove portion 4 It is a feature. Therefore, when the hooked spacer 2 inserted along the recessed groove portion 4 is laterally moved in the B direction at a substantially right angle, the comb teeth 2a are formed on the stepped portion of the protrusion 3 with the configuration of the embodiment shown in FIG. The inconvenience caused by is solved by the configuration of the present embodiment. Therefore, the inclination angle of the inclined surface 6 is set to a size that smoothes the lateral movement of the hooked spacer 2.

(No. 2) The roof tile 1 shown in FIG. 5 is provided with the protrusion portion without the concave groove portion 4 on the side (left side in the drawing) having a high inclination angle θ in the direction of arrow B, which is substantially perpendicular to the inserting direction of the spacer 2 with hook. 3 has a protruding shape.

(No. 3) In the roof tile 1 of FIG. 7, there is no recessed groove portion around the projection portion 3, and the projection portion 3 is suddenly projected from the lower surface (valley surface) of the roof tile. The projecting portion 3 also has no inclination in the inserting direction of the spacer 2 with hook (direction of arrow A),
The height in the same direction is changed by inclining the spacer 2 with the hook at the inclination angle θ that copes with the thinness of the spacer 2 with the hook only in the direction (arrow B direction) substantially perpendicular to the inserting direction. Further, the stepped portion on the side where the inclination angle θ is low is formed on the inclined surface 6 so as to smoothly move the hooked spacer 2 laterally. By the way, as shown in FIG. 3 of Japanese Utility Model Publication No. 58-32157, the protruding portion 3 of the present embodiment is integrally formed with a protruding ridge on the periphery of the roof tile, and this protruding ridge is used as a spacer with a hook. Two hooks
It can be suitably implemented when the 2b is used as a protruding portion to be hooked.

(No. 4) FIG. 6 shows almost the center of the butt side edge of the backwater 7 formed from the insertion side edge to the butt side edge of the front side surface of the stile 3 (but not limited to the stile). Bent portions 9 and 9 connected to the inner water baffle 8 are formed in a series in the portion, and the projection 3 is provided at the outer portion bypassed by these water baffle 7, 8 and the bent portions 9 and 9 as shown in FIG. It features a similarly formed structure. Therefore, the protruding portion 3 is formed that does not hinder the water repelling function of the roof tile 3.

Advantageous Effects of the Present Invention According to the roof tile according to the present invention, the comb teeth 2a of the spacer 2 with the hook that is thin and used in the repeated firing process can be obtained.
Since the abdominal part 2c and the back part 2d of the hook 2b are laterally moved to the state of contacting the front and rear surfaces of the protrusion 3, the hook 2b is securely hooked to the lower jaw of the protrusion 3 and is not detached. The roof tile 1 held by the spacer 2 is never worried about an accident such as tilting, falling down, or falling, and the yield and the productivity can be greatly improved.

In addition, the spacer 2 with hooks has its comb teeth as described above.
As long as the abdominal portion 2c and the back portion 2d of 2a come into contact with the front and rear surfaces of the protruding portion 3, it can be used as having a useful life, which greatly extends the useful life and enhances economic efficiency, which in turn reduces the production cost of roof tiles. Will also contribute.

In addition, whether or not the protruding portion 3 is molded in the molding of the roof tile 1 is not a serious problem in using the spacer 2 with hooks, and contributes to facilitation of molding work and improvement of efficiency and yield.

[Brief description of drawings]

FIG. 1 is a perspective view showing a main part of a roof tile according to the present invention, and FIGS. 2 and 3 are views taken along arrows II-II and III-III in FIG. FIG. 4, FIG. 5, FIG. 5, FIG. 6, and FIG. 7 are sectional views and perspective views showing another embodiment of the present invention from the same viewpoint as FIG. FIG. 8 is a perspective view showing a conventional roof tile together with a spacer with hooks, and FIG. 9 is a sectional view showing a conventional roof tile with a hook spacer. 2 …… Spacer with hook, 2b …… Hook 3 …… Projection, 1 …… Roof A Arrow …… Insertion direction of spacer with hook B Arrow …… Direction approximately perpendicular to insertion of spacer with hook

Claims (1)

[Scope of utility model registration request] 1. A roof tile having a protrusion for hooking a hook of a spacer with a hook, wherein the protrusion is tilted in a direction substantially perpendicular to the inserting direction of the spacer with a hook to change the height of the protrusion in the same direction. Roof tile characterized by being shaped.