JPH0639862B2 - Stopper mounting device for open / close door for storage - Google Patents

Description

Description: (a) Field of Industrial Application The present invention relates to a stopper attachment device for an opening / closing door provided in a front opening of a reach-in type storage.

(B) Conventional technology In a reach-in type storage, for example, a cooling showcase, one end of a stopper arm is rotatably attached to an opening / closing door provided in the front opening of the case, and the other end of this stopper arm is , Is rotatably attached to a stopper pin which is slidable with a slide block inside a slide rail fixed to an opening / closing door mounting frame.

That is, as shown in FIG. 9 and FIG. 10, the stopper 20 is attached to a bumper 24 fixedly housed in an elongated slide rail 23 provided on an upper horizontal frame 22 of a mounting frame 21 by a stopper 25 such as a screw from below. Fixed, while FIGS. 10 and 1
As shown in FIG. 1, a slide block 26 is accommodated in a slide rail 23 with a clearance L necessary for sliding, and a stopper pin rotatably supporting the other end of a stopper arm 27 in the slide block 26. 28
Is installed. Therefore, when the door is opened, the slide block 26 is guided by the rotation of the stopper arm 27 that is pulled out to the outside of the refrigerator, so that the slide block 26 is slid.
When the door is moved to the stopper 20 direction and the door is opened to the maximum, the stopper pin 28 moves the stopper pieces 20A, 2A.
It is sandwiched between 0B. In this state, the door is held open. On the contrary, when the door is closed, the slide block 26 is guided by the rotation of the stopper arm 27 that is pushed toward the inside of the refrigerator, so that the slide block 26 moves inside the slide rail 23.
Move away from. As shown in the perspective view of FIG. 12, the stopper 20 has stopper pieces 20A, 20
The front and rear of the portion A of the corner base, which is the boundary between B and the mounting surface 20C, are formed with the same width, and the stopper pieces 20A, 2
Hold portions 20D and 20E are formed at the tip of 0B so as to be expanded as the stopper pin 28 passes.

(C) Problems to be Solved by the Invention In the above-mentioned conventional technique, the slide block 26 slides in the left-right direction in the slide rail 23 as the door is opened and closed, and both stopper pieces 20A, 20
Stopper pins 2 on the tip holding parts 20D and 20E of B
When 8 passes, the hold parts 20D and 20E are spread out, and the stopper piece 20A is pushed outward and the stopper piece 2
OB will be temporarily deformed by pushing inward.
This pressing deformation is performed twice for each opening / closing operation of the door.

When the door is opened, the stopper arm 27 exerts a force to pull the stopper pin 28 toward the outside of the refrigerator as shown in FIG. When the degree of deformation of the stopper piece 20A is larger than that of the stopper piece 20B as shown in FIG. 14 and the door is closed on the contrary, the stopper pin 28 is moved by the stopper arm 27 as shown in FIG. Since the stopper pin 28 is slanted by the clearance L due to the force pushing in the interior direction and the track is displaced, the degree of deformation of the stopper piece 20B becomes larger than that of the stopper piece 20A as shown in FIG. As a result, every time the door is opened and closed, the mounting surface 2
A local stress concentration occurs at the portion A where 0C and the stopper pieces 20A and 20B merge.

Therefore, when the local stress concentration is repeated thousands of times and tens of thousands times, a crack is caused in the portion A due to metal fatigue, and the stopper 20 cannot be used.

Therefore, the present invention has been proposed in order to solve the above-mentioned problems, and an object thereof is to provide a stopper device for an opening / closing door for a storage that prevents fatigue damage of the stopper.

(D) Means for Solving the Problems In order to achieve this object, the stopper attaching device for the storage opening / closing door according to the present invention is configured to move the stopper in the front-rear direction according to the displacement of the pin when the door is opened / closed. It is characterized by being attached to the mounting frame.

(E) Operation In the present invention, when the door is opened / closed, the stopper is moved in accordance with the movement of the stopper pin, which is displaced due to the pulling force toward the outside of the refrigerator or the pushing force toward the inside of the refrigerator when the stopper arm rotates. It is characterized in that it can be moved outside or inside the refrigerator.

(F) Example Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 to 3 show a main part of a cooling showcase as a storage according to an embodiment of the present invention.

As shown in FIGS. 6 and 7, the mounting frame 1 on the front of the case is
The opening / closing door 3 is attached to the torsion type hinge 2 on the right side in the figure, and the attachment piece 3 on the upper inner surface near the hinge 2 of the door 3 is attached.
One end of the stopper arm 4 is rotatably attached to a in a detachable state using a screw 5.

Further, in the longitudinal direction of the upper horizontal frame 1a of the mounting frame 1, a slide rail 6 having a long hole 6a for sliding and a notch 6b for inserting a slide block described later formed in the longitudinal direction is attached.

At the left and right ends of the slide rail 6, a bumper 8 having mounting screw holes 8a for the stopper 7 is formed.
8 are fixed respectively. Also, slide rail 6
A slide block 9 is slidably provided inside the notch 6b so that the stopper pin 10 inserted into the hole at the other end of the stopper arm 4 is partially exposed below the elongated hole 6a. It is fixed to the slide block 9. At this time, the other end of the stopper arm 4 is rotatably attached to the stopper pin 10.

In addition, the left and right bumpers 8, 8 fixed to the slide rail 6
The stoppers 7, 7 shown in FIG.
A and 7B are directed toward the stopper pin 10 side, and are fixed by a stopper 11 such as a screw through a mounting hole 13 of a mounting surface 7C. The stopper 7 is a stopper piece 7A, 7B.
The holding portions 7D and 7E are provided at the tip of the.

As the stopper 11, a stepped screw as shown in FIGS. 2A and 2B is used. Stopper 1 consisting of this stepped screw
1, specifically, the diameter A of the stepped portion 11A is 6.3 mm,
The height B is 4.2 mm, the diameter C of the threaded portion 11B is 5 mm, the plate thickness D of the stopper 7 is 1.6 mm, the diameters E of the mounting holes 13, 13 are 6.8 mm, the mounting holes 13, The distance F between the two 13 is 3.2 mm, the distances H and I from the center of the line connecting the holding portions 7D and 7E to the centers of the two mounting holes 13 and 13 are 47.5 mm and 57.5 mm, respectively, and the sliding The plate thickness G of the rail 6 is 2.5 mm. Stopper 11 of such size
1 is screwed into the screw holes 8a, 8a of the bumper 8 through the mounting holes 13, 13 and the elongated hole 6a as shown in FIG. 1, the lower surface of the slide rail 6 and the upper surface of the mounting surface of the stopper 7 are A gap of 0.1 mm is formed between the
0.5 between the wall surface of 3, 13 and the wall surface of the stepped portion 11A
In consideration of the gap F, when the stopper 11 is used as the support shaft, the widths of the front end holding portions 7D and 7E of the stopper 7 in the front-rear direction, that is, the swing widths are respectively 2. 8mm can be taken. Therefore, when opening and closing the door 3,
It is possible to move the stopper 7 in or out of the refrigerator in accordance with the movement of the stopper pin 10 whose track is displaced due to the pulling force in the outside of the refrigerator or the pushing force in the inside of the refrigerator accompanying the rotation of the stopper arm 4. As a result, when the stopper pin 10 passes through the holding portions 7D and 7E, the stress applied to the holding portions 7D and 7E, that is, the pressing force is equalized.

With this configuration, when the door 3 is opened, the stopper arm 4 moves in the outside direction of the refrigerator, and along with the movement, the slide block 9
Moves toward the stopper 7 on the hinge 2 side (right side in the figure). As shown by the alternate long and short dash line in the figure, when the door 3 is fully opened, the stopper pin 10 is clamped by the stopper pieces 7A, 7B, and is held by the hold portions 7D, 7E formed at the tip end thereof so as not to slip out. To be done.
At this time, the slide block 9 comes into contact with the bumper 8 and stops.

Here, when it is desired to reverse the opening / closing direction of the door 3, the one end of the stopper arm 4 is removed from the attachment piece 3a of the door 3, and the door 3 is inverted and attached to the left hinge in FIG. By mounting one end of the arm 4 on the mounting piece 3b as shown by the chain double-dashed line, it can be easily reversed.

As a means for further reducing the stress on the stopper pieces 7A and 7B when the door 3 is opened and closed, the stopper 7 has an eighth
As shown in the perspective view of the figure, notches 12 having a curved contour are formed on the upper bases (corner A portions) of the stopper pieces 7A and 7B, respectively.

(G) Effect of the Invention According to the present invention described above, when the door is opened and closed, the movement of the stopper pin is deviated by the force of pulling in the outside direction or the force of pushing in the inside of the storeware as the stopper arm rotates. The stopper can be moved to the outside or inside of the refrigerator in accordance with the above. Therefore, when the stopper pin passes through the holding portions, the stress applied to the both holding portions, that is, the pressing force becomes equal, and as a result, the opening and closing of the door can be performed. The local stress concentration that has conventionally occurred in the bending base of the stopper piece is dispersed, the occurrence of fatigue fracture is suppressed, and the life of the stopper can be extended.

Further, since the notch having a curved contour is formed on the upper base of the stopper piece, the stress on the stopper piece when the door is opened and closed can be further reduced.

[Brief description of drawings]

1 to 8 show an embodiment of the stopper attaching device of the present invention, FIG. 1 is a vertical sectional side view of an essential part, and FIGS. 2 (a) and 2 (b) are a plan view and a front view of a stopper, and FIG. The figure shows the bottom view of the stopper,
Fig. 4 is an explanatory view of the stopper pin trajectory when the door is opened,
Fig. 5 is an explanatory view of the stopper pin trajectory when the door is closed,
FIG. 6 is a perspective view of the main part as seen from below, FIG. 7 is a plan view of the main part, FIG. 8 is an exploded perspective view of the main part, and FIGS. 9 to 15 show prior art, and FIG. 1 is a longitudinal sectional side view of an essential part corresponding to FIG. 1, FIG. 10 is a longitudinal sectional front view of an essential part, FIG. 11 is a longitudinal side view showing attachment of a slide block, and FIG. 12 is an exploded perspective view corresponding to FIG. FIG. 13 is a vertical sectional side view showing the swinging motion of the stopper pin, and FIGS. 14 and 15 are trajectory explanatory views of the stopper pin corresponding to FIGS. 4 and 5, respectively. 1 ... Mounting frame, 3 ... Opening / closing door, 4 ... Stopper arm, 6 ... Slide rail, 7 ... Stopper, 7A,
7B ... Stopper piece, 7D, 7E ... Hold part, 8
…… Bumper, 9 …… Slide block, 10 …… Stopper pin, 11 …… Stopper.

Claims (1)

[Claims] 1. A mounting surface attached to an opening / closing door mounting frame of a front opening of a storage so as to be movable inward and outward from the inside by a stopper on an upper horizontal frame of the mounting frame, and from both front and rear sides of the mounting surface. Two stopper pieces that are bent downward and project in the lateral direction from one side, face-to-face stoppers, a cutout portion formed in the upper base of the stopper piece and having a curved contour, and a tip portion of the stopper piece are provided. The door includes a stopper having a holding portion formed therein and a pin pivotally attached to an end portion of the opening / closing door mounting frame and slid in response to opening / closing operation to be gripped by the holding portion of the stopper. When the pin comes into contact with the hold part when opened, the entire stopper moves in the outside direction of the refrigerator, and when the pin comes into contact with the hold part when the door is closed, the entire stopper moves in the inside direction. for Stopper mounting device of the door closing.