JPH0242214Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a show case that improves the pitch between each wheel of a sliding door and the pitch between each groove of a sliding door rail.

(Prior Art) Conventionally, as shown in FIG. 2, a case body 1 having an opening (opening 1a) at the upper front side is provided with a sliding door rail 3 for guiding a sliding door 2, as shown in FIG. 3. Wheels 4a and 4b are installed at the front and rear of the sliding door 2, and arc-shaped grooves 5 into which the wheels 4a and 4b are inserted are installed at the front and rear of the sliding door rail 3.
a, 5b, respectively, and the pitch between each wheel 4a, 4b and the pitch between each groove 5a, 5b is L.
When the front and rear widths of the grooves 5a, 5b are d, =L is the width of each wheel 4a, 4b and the groove 5a,
5b is known.

(Problems to be Solved by the Invention) In the conventional show case, when the opening 1a of the case body 1 is closed, the wheels 4a and 4b simultaneously fall into the grooves 5a and 5b. There was a problem in that the gasket 6 attached to the tip of the sliding door 2 violently collided with the decorative frame 7 that stopped the movement of the sliding door 2, thereby shortening the life of the gasket 6. Moreover, the opening 1a
When the sliding door 2 is closed, the wheels 4a and 4b are located behind the grooves 5a and 5b, as shown in FIG. The force F1 is applied diagonally downward to the front of the case body 1. Therefore, when opening the opening 1a again, it is necessary to apply a force that resists each of the forces F1, resulting in the problem that the opening 1a cannot be opened easily.

An object of the present invention is to provide a case that allows the sliding door to be easily opened.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention is provided with a sliding door having wheels attached at the front and rear, and a sliding door rail having grooves into which the wheels are placed at the front and rear. In the case formed by sloping the front and rear sides of the
When the pitch between each wheel is L, the pitch between each groove is L, and the front and rear width of each groove is d,
Each wheel and each groove are provided so that ≠L and L-d<<L+d.

(Function) According to the present invention, when the pitch between each wheel, the pitch L of each groove, and the front and rear width of each groove are d, ≠L and L−d<<L+d Since each wheel and each groove were provided so that <
When the sliding door is closed in the L position, the rear wheels fall into the rear groove, and then the front wheels fall into the front groove. The front wheel is located on the rear side of the front groove, and the rear wheel is located on the front side of the rear groove, and the forward movement force of the front wheel is canceled by the rear movement force of the rear wheel. . Further, when the sliding door is closed with >L, the front wheel falls into the front groove and then the rear wheel falls into the rear groove. The front wheel is located on the front side of the front groove, and the rear wheel is located on the rear side of the rear groove, and the forward moving force of the rear wheel is canceled by the rearward moving force of the front wheel.

(Embodiment) Figures 1 and 5 show a first embodiment of the present invention, and the same components as in the conventional example are denoted by the same reference numerals, and the case body of the conventional example is shown in Figure 2. Since the structure is similar to that of this embodiment, drawings and explanations will be omitted. That is, 1a is an opening of the case body, 2 is a sliding door that opens and closes the opening 1a, 3 is a sliding door rail that guides the sliding door 2, 4a,
4b are wheels attached to the front and rear of the sliding door 2 and roll on the sliding door rail 3; 5a and 5b are arcuate grooves provided at the front and rear of the sliding door rail 3 into which the wheels 4a and 4b are depressed; 6; is a gasket attached to the tip of the sliding door 2, and 7 is a decorative frame that stops the sliding door 2 from moving forward.

The pitch between the wheels 4a, 4b, the pitch L between the grooves 5a, 5b, and the grooves 5a, 5.
When the front and rear width of b is d, the structure is formed so that the equation L-d<<-d...(1) holds true and <L...(2) holds true.

According to this embodiment, when the opening 1a is closed by the sliding door 2, the rear wheel 4b of the sliding door 2 first falls into the rear groove 5b, and then the front wheel 4a falls into the front groove 5a. The front wheel 4a has the front groove 5.
The rear wheel 4b is located on the rear side of the rear groove 5b, and the rear wheel 4b is located on the front side of the rear groove 5b. Therefore, although the forward moving force F1 is applied to the front wheel 4a as in the conventional example, the rear wheel 4a is
As shown in FIG. 5, a backward moving force F2 is applied to b, which acts to cancel out the moving force F1. This prevents the gasket 6 of the sliding door 2 from violently colliding with the decorative frame 7 as in the conventional case, and also allows the sliding door 2 to be opened easily.

FIG. 6 shows a second embodiment of the present invention.
> Each wheel 4a, 4b and each groove 5 on L
a and 5b are set.

According to this embodiment, when the opening 1a is closed by the sliding door 2, the front wheel 4a of the sliding door 2 first falls into the front groove 5a, and then the rear wheel 4b falls into the rear groove 5b. The front wheel 4a has a front groove 5.
The rear wheel 4b is located on the front side of the rear groove 5b, and the rear wheel 4b is located on the rear side of the rear groove 5b. Therefore, a forward moving force is applied to the rear wheel 4b, but a backward moving force is applied to the front wheel 4a, which acts to cancel the moving force of the rear wheel 4b. It has the same effect as the example. Note that the effects of the other configurations are similar to those of the first embodiment.

FIG. 7 shows a third embodiment of the present invention.
The central part 10a of the groove 10 of the sliding door rail 3 is formed flat, and the front and rear side parts 10b and 10c are inclined. This embodiment also has the same effect as each of the embodiments described above. In addition, other configurations,
The effect is similar to that of the first embodiment.

(Effects of the invention) As explained above, the present invention includes a sliding door with wheels attached at the front and rear, and a sliding door rail with grooves into which the wheels are placed at the front and rear, and the front and rear sides of each groove. In a show case formed to be inclined, when the pitch between the wheels is L, the pitch between the grooves is L, and the width of each groove is d, ≠L and L-d<<L+d. Since each wheel and each groove are provided so that when the one wheel is located on the front side in the one groove, the other wheel is located on the rear side in the other groove, and the sliding door is closed. This has the advantage that the sliding door can be opened easily because it acts to cancel the force of movement of the sliding door in the closing direction.

[Brief explanation of the drawing]

1 and 5 show a first embodiment of the present invention, FIG. 1 is a sectional view showing the main parts, and FIGS. 2 to 4 show conventional examples. is a sectional view of the rear case, FIG. 3 is a sectional view showing the sliding door in a closed state, FIG. 4 is an explanatory diagram showing the moving force applied to the wheels, and FIG. 5 is an explanatory diagram showing the moving force applied to the rear wheels.
FIG. 6 is a sectional view showing the main part of the second embodiment of the present invention, and FIG. 7 is an explanatory diagram showing the main part of the third embodiment of the invention. In the diagram, 2...Sliding door, 3...Sliding door rail, 4a, 4b
...wheels, 5a, 5b...grooves,...pitch between each wheel, L...pitch between each groove, d...front and rear width of each groove.

Claims (1)

[Scope of utility model registration request] In a show case comprising a sliding door with wheels attached at the front and rear, and a sliding door rail having grooves into which the wheels are placed at the front and rear, the front and rear sides of each groove are inclined, and the pitch between the wheels is and each wheel and each groove are provided so that ≠L and L−d<<L+d, where L is the pitch between each groove, and d is the front and rear width of each groove. A show case featuring.