JPH0315930Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a locking device for a box opening, such as an opening, and a door for closing the opening.

Construction of conventional example and its problems As shown in Fig. 6, as a locking device for an open door, a movable lever B is provided inside a handle A fixed to the front surface of the door (not shown). It was composed of In the case of unlocking, only the lever B slides in the _m1 direction by grasping the handle C. As a result, the pivot support E of the movable piece D, which is provided with its tips in contact with the inner surfaces of both A and C in this handhold portion C, and is rotatably supported so as to intersect with each other, moves in the _m2 direction.
Next, an L-shaped member F whose one end is pivotally supported by the shaft support E
rotates in the _m3 direction around the fulcrum G, and the tip of the movable piece H, which is locked in conjunction with the other end, rotates in the _m4 direction around the fulcrum I, and locks into the lock hole K of the main body. Slide the lock pin J in the unlocking direction. Because of this structure, if the lever B is pinched at both ends far from the center, for example, as shown at B ₁ and B ₂ , force will be applied to only one side of the movable piece D, causing the lever B to shift. is distorted and it is difficult to obtain parallel sliding motion. In addition, the structure within the handle portion C is complex and there are many joints, so dirt tends to accumulate in the gaps, etc., and the operation is not smooth, making cleaning very difficult and unsanitary.

Moreover, Japanese Patent Publication No. 50-34781 is known as a similar structure.

Purpose of the invention The object of the present invention is to improve the above-mentioned drawbacks and provide a door device for opening, etc. that operates smoothly, has a simple structure, and is easy to clean.

Structure of the invention In other words, the opening and other door devices of the invention include a box having an opening and a locking hole near the opening, a door for opening and closing the opening of the box, and an opening/closing door fixed to the door. a handle, a retractable locking pin located in the door and locking in the locking hole, a spring biasing the lock pin in the locking direction, and a locking pin located at an appropriate distance from the back surface of the handle and having both ends connected to the locking hole. A lever that extends into the door, a bar that connects the tips of both ends of this lever, and an interlocking mechanism that has one end connected to this bar and the other end connected to the guide hole of the lock pin via a pivot pin. and a support portion attached to the back side of the door to which an arm for rotatably supporting the interlocking member is attached, and a lock pin is disposed perpendicularly to the sliding direction of the lever, and Both ends of the interlocking member are connected at positions equidistant from both ends of the lever, the lock pin and the interlocking member are connected at the center of the interlocking member, and the position of the arm connecting the interlocking member and the support member is set to support the interlocking member. The arm is located between the position of the bar and the position of the pivot pin that connects the interlocking member and the lock pin, and the arm is further away from the locking hole than the bar.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In the figure, 1 is the oven body, 2 is the opening 3
The box 4 constituting the oven body 1 is a door that closes the opening 3 of the box 2, and is pivotally supported by hinges 5, 5 on both sides of the lower part, so that it can be opened and closed in the vertical direction. Reference numeral 6 denotes a substantially U-shaped handle fixedly provided in parallel on the opposite side of the door 4 to the hinges 5, 5. 7
is provided in the door 4 and also in the locking hole 8 of the box body 2.
It is a retractable lock pin that locks into the door, has an inclined part 7' on the back surface of the upper end, a guide hole 9 on the lower end, and is normally biased by a spring 10 to protrude from the upper end surface of the door 4. There is. 11 is located at an appropriate distance from the back surface 6' of the handle 6 and has both ends 11a, 1
1b extends into the door 4 so as to be slidable back and forth, and is arranged to move in a direction perpendicular to the moving direction of the lock pin 7. 12
is a bar that connects and fixes the lever 11 near both ends 11a and 11b. Reference numeral 14 designates an interlocking member whose one end is connected to the arm 13 and the bar 12, which serve as a fulcrum, and whose other end is connected to the guide hole 9 of the lock pin 7 by a pivot pin 14'. 15,15
A pair of left and right support members support the arm 13 that serves as the fulcrum of the interlocking member 14, and are fixed to the door near the middle between one end of the lever 11 extending into the door 4 and the lock pin 7, respectively. Further, the interlocking member 14 has both ends connected to both ends 11 of the lever 11 as shown in the figure.
It is connected to the arm 13 at a position equidistant from a and 11b, and at the intermediate point of the interlocking member 14,
It is connected to the lock pin 7. The arm 13 is located between the bar 12 and the pivot pin 14'.

Next, the operation of the above configuration will be explained. When unlocking the locked door 4, by grasping both the handle 6 and the lever 11, the slidable lever 11 is moved to the side of the fixed handle 6 as shown by arrow _M1 in Fig. 3. be slid. When the lever 11 slides, the interlocking member 14 provided via the bar 12 is rotated counterclockwise (direction of arrow _M2 in FIG. 3) about the arm 13 as a fulcrum. Interlocking member 1
4 rotates, the lock pin 7 interlocked with the interlocking member 14 descends, and the upper end of the lock pin 7 is unlocked through the locking hole 8 of the box body 2, and the door 4 is opened. Conversely, when closing the door 4, the guide hole 9 of the lock pin 7 is flexible in the downward direction of the lock pin 7, so that the lever 11 does not need to be moved even if the lever 11 is in a position protruding from the upper end surface of the door. It can be closed by lowering only the lock pin 7.

The lever 11 has the above-mentioned structure and operation, and to explain its effects, the lever 11 is connected to the handle 6.
Since it is provided so as to be slidable back and forth at an appropriate distance from the back surface 6' of the handle, it is easy to apply sliding force to the lever 11 when the handle is gripped, and the user's fatigue level can therefore be reduced. In addition, since the bar 12 that interlocks the lever 11 and the lock pin 7, the interlocking member 14, and the supporting members 15, 15 are all built into the door 4, the area near the handle 6, which tends to get dirty, is simple and has fewer joints than in the past. It prevents dirt from accumulating and is easy to clean. Furthermore, when the interlocking member 14 is supported by the support member 15, the connection position with the bar 12 is at both ends of the bar 12, that is, at both ends 1 of the lever 11.
1a and 11b, it is connected to the arm 13 at the same distance position, and is connected to the lock pin 7 at the intermediate point of the interlocking member 14, so that only one side of the lever 11 (for example, actuating the part M3 in FIG. ₄ ) can be used. Even when the lever 11 is slid, the lever 11 can be smoothly slid and unlocked.

Effects of the Invention As is clear from the above embodiments, in the door device for an oven or the like of the present invention, by grasping the handle and lever, the lever moves toward the handle, and the bar attached to the lever moves. When this bar moves, the pivot pin side of the connecting member rotates about the arm and moves in the direction of releasing the lock pin, allowing the lock to be unlocked. At this time, the lock pin and the connecting member are engaged at the center of the connecting member, so the force applied to the lock pin is balanced, and the lever can slide easily without twisting, improving operability. improves.

In addition, by arranging the arm that connects the interlocking member and the support member between the position of the bar that supports the interlocking member and the position of the pivot pin that connects the interlocking member and the lock pin, the lever can be slid easily. Since the interlocking member can rotate about the arm when the arm is rotated, rotational force can be easily applied to the pivot pin. Therefore, a large amount of force is not required for operation.

In addition, since only the handle and lever are located on the surface of the door, there are few joints and it is easy to clean, and the lever is easy to slide.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an oven with a door position according to an embodiment of the present invention, Fig. 2 is a sectional view taken along the line - Fig. 1, Fig. 3 is a sectional view taken along the line - Fig. 2, and Fig. 4 is a sectional view taken along the line - Fig. 2. FIG. 3 is a sectional view taken along the line, FIG. 5 is a perspective view of the vicinity of the interlocking member, and FIG. 6 shows a conventional example corresponding to FIG. 2...Box body, 3...Opening, 4...Door, 6...Handle, 7...Lock pin, 11...Lever, 1
2...Bar, 14...Interlocking member.

Claims (1)

[Scope of utility model registration request] a box having an opening and a locking hole in the opening;
A door for opening and closing the opening of the box body, an opening/closing handle fixed to the door, a retractable lock pin located inside the door and engaging with the locking hole, and a lock pin that is inserted in the locking direction. a substantially U-shaped lever with both ends slidably supported inward from the outside of the door at an appropriate distance from the back surface of the handle; a bar to which is connected and fixed, an interlocking member whose both ends are rotatably connected to the bar, and which has a pivot pin in the middle portion inserted into a guide hole provided in the lock pin; It has a rotatably connected arm and a pair of support parts, one end of which is fixed to the end of the arm and the other end of which is attached to the back surface of the door, and the lock pin is fixed in the sliding direction of the lever. are arranged in a vertical direction, and both ends of the interlocking member are connected to the lever at positions equidistant from both ends of the lever, and the lock pin interlocking member is connected at the center of the interlocking member, thereby connecting the interlocking member and the support member. An oven, etc. in which the arm is positioned between the bar that supports the interlocking member and the pivot pin that connects the interlocking part and the lock pin, and the arm is further away from the locking hole than the bar. door device.