JP3017198U - Exhibition case door opening and closing device - Google Patents

Abstract

(57) [Summary] [Purpose] To smoothly move the sliding door of a large display case horizontally. A door opening / closing device includes an upper opening / closing device 100 and a lower opening / closing device 110. The upper opening / closing device 100 has a horizontal operation mechanism 2 and a front / rear operation mechanism 3, and the lower opening / closing device 110 has a front / rear operation mechanism 3. The horizontal operation mechanism 2 holds the upper end of the door 4 and
It slides horizontally in conjunction with the rotation of 21. Front-rear operating mechanism 3
Is a fixed wall 6, from the state where the door 4 is opened, by the bell crank 30 which is interlocked with the motors 7 and 71 independent of the horizontal operation mechanism 2.
Push in between 6.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door opening / closing device for a large display case.

[0002]

[Prior art]

 Doors of exhibition cases are often opened and closed by sliding doors. Especially in the case of a transparent display case, the door (4) is installed in the opening (60) between the glass fixed walls (6) and (6) as shown in FIG. When the door is fitted and the door (4) is closed, the front surface of the door (4) is located in the same plane as the fixed wall (6). When the display case is large, it is difficult to open and close the door manually, so there is an opening / closing device shown in FIG. 12, for example. The rail (29) is erected on the indoor side ceiling of the display case (200), and the upper part of the door (4) is attached to the horizontal operation mechanism (2) equipped with a traveling carriage and suspended from the rail (29). I am letting you. To close the door, first move the horizontal operation mechanism (2) holding the upper part of the door (4) left and right along the rail (29). The horizontal operation mechanism (2) is stopped at the position where the door (4) faces the opening (60). After that, the front / rear operation mechanism (3), which is provided inside the front surface of the horizontal operation mechanism (2) and whose front end is in contact with the door (4), such as a solenoid valve, is operated to open the door (4) (60). ) And push it in. When opening the door (4), the front and rear operation mechanism (not shown) provided inside the rear surface of the horizontal operation mechanism (2) is actuated to push the door (4) out of the opening (60).

[0003]

[Problems to be solved by the device]

 In the above configuration, since the front-rear operation mechanism (3) moves integrally with the horizontal operation mechanism (2), the weight of the horizontal operation mechanism (2) becomes large and a large dynamic force is required for the movement of the horizontal operation mechanism (2). Need. In the present invention, a mechanism for attaching and detaching the door (4) to and from the fixed walls (6) and (6) is provided separately from the mechanism for horizontally moving the door (4) to smoothly move the door (4) horizontally. With the goal .

[0004]

[Means for solving the problem]

 The front / rear operation mechanism (3) of the door opening / closing device is driven via a link mechanism by a motor (7) installed near the installation position of the door (4) independently of the horizontal operation mechanism (2). R. A frame (5) protruding from the front of the display case (200) is connected to the door (4), and the front and rear operation mechanism (3) allows the frame (5) to be retracted from the front of the display case (200). Along with the operation, a member is provided below the frame (5) that contacts the lower surface of the frame (5) and guides the sliding of the frame (5), so that the frame (5) can be flexibly deformed when a vertical load is applied. A support base (50) for restraining is installed in the display case (200).

[0005]

[Operation and effect of the device]

 Since the front-rear operation mechanism (3) is driven by the motor (7) attached independently of the horizontal operation mechanism (2), the weight of the horizontal operation mechanism (2) can be reduced, and the horizontal operation mechanism can be reduced. The mechanism (2) can be slid smoothly. Further, since the lower surface of the frame (5) is always in contact with the roller (52) provided on the upper surface of the support base (50), the frame (5) can be smoothly slid by the rotation of the roller (52) and the frame (5 Even if a vertical load such as the weight of the worker is applied to (), the bending deformation can be suppressed.

[0006]

【Example】

 Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. As in the conventional case, the door (4) is tightly fitted into the opening (60) between the glass fixed walls (6) and (6) when closing, as shown in FIG. When opening, it is pulled out from the opening (60) once and slides to the right. FIG. 1 shows the door (4) closed. The door opening / closing device includes an upper opening / closing device (100) and a lower opening / closing device (110), and the devices (100) and (110) are attached to the upper and lower ends of the display case (200), respectively. The upper opening / closing device (100) holds and drives the upper end of the door (4) and the lower opening / closing device (110) holds and holds the lower end of the door (4). The upper opening / closing device (100) has a horizontal operation mechanism for moving the door (4) left and right, and a front-back operation mechanism for fitting the door (4) conveyed by the horizontal operation mechanism into a predetermined position. The lower opening / closing device (110) has a front-back operation mechanism.

A frame (5) having a width twice the width W of the door (4) projects from the front surface of the lower opening / closing device (110), and as will be described later, the frame (5) is attached to the door (4). In conjunction with this, it slides back and forth only. On both sides of the frame (5), the plate pieces (57) project from the front of the display case (200) and the door (4) is closed, and the front surface of the plate piece (57) matches the front surface of the frame (5). To do. As shown in FIG. 11, the fixed wall (6) is held at the upper end and the lower end by the support piece (61), and the support piece (61) is attached to the rear surface of the apparatus body (1). The fixed wall (6) is fixed to the apparatus body (1). The lower end of the door (4) extends below the support piece (61) attached to the lower end of the fixed wall (6).

(Horizontal Operation Mechanism of Upper Opening / Closing Device) As shown in FIGS. 3 and 4, a rail (20) having a length twice or more the width W of the door (4) is provided on the upper part of the device main body (1). ) Extends and hangs on the left and right, and a plurality of pulleys (23) and (23) are rotatably fitted on the rail (20). A support tool (24) is provided so as to face the front surface of each pulley (23), and the pulley (23) is rotatably fitted on a shaft (28) protruding from the support tool (24). 3 and 4, in order to explain the upper opening / closing device (100) and the lower opening / closing device (110) in detail, both devices (100) (110) are shown in an enlarged manner, and the middle of the door (4) is shown. The part is omitted. Further, FIG. 4 shows a state before the door (4) is pushed into the opening (60). An annular belt (22) is stretched between the motor (21) provided on the left upper end inside the device body (1) and the rotating shaft (15) provided on the right upper end, and the belt (22) ) Is attached to the upper end of the support (24). When the motor (21) rotates, the pulley (23) rolls left and right on the rail (20) via the belt (22) and the support tool (24).

An L-shaped attachment (25) is attached to the lower end of the support (24). The roller (27) is fitted on the shaft (26) protruding rearward from the fixture (25). The distance from the upper end of the roller (27) to the lower end of the rail (20) is shorter than the clearance between the pulley (23) and the rail (20). Therefore, even when the pulley (23) is lifted by an impact or the like and is separated from the rail (20), the roller (27) contacts the lower surface of the rail (20) to prevent the pulley (23) from slipping off. On the lower surface of the fixture (25), two support brackets (8) (8) having a U-shaped cross section are attached to the door (4) at positions corresponding to both ends of the bracket with their openings facing downward. As shown in FIG. 4, a bush (81) is slidably fitted on a shaft (80) hung on the front and rear walls of each support bracket (8), and a lower end portion of the bush (81) is A door holder (82) is attached which holds the upper end of the door (4) and extends in the left-right direction. The distance that the bush (81) can move along the axis (80) depends on the size of the door (4), but is set to about 20 mm. Therefore, by the rotation of the motor (21), the door holder (82) moves horizontally while holding the door (4), and the power of the motor (21) drives the door holder (82) horizontally. Configure the horizontal operation mechanism (2).

(Front-back operation mechanism of the upper opening / closing device) The stopper (83) projects inward from the front wall of the support bracket (8), and the rear end of the door holder (82) and the support bracket ( A tension spring (84) is stretched between the front wall of 8). The bush (81) is biased forward by the tension spring (84) and is pressed against the stopper (83). In front of each support bracket (8), two support bases (10) (10) are attached to the device body (1) left and right, and a bell crank (30) is mounted on each support base (10). It is pivotally supported. As shown in FIG. 5 (a), the rollers (31) provided at the tips of the arms (30a) of the two bell cranks (30) are slightly separated from the front surface of the door holder (82). The shaft (32) passes through the distal end portion of the other arm portion (30b) which is separated.

As shown in FIG. 6, one end of a rod (33) extending to the left is fitted so as to sandwich the arm (30b) on the shaft (32) of the right bell crank (30), and further. One end of the support rod (34) is fitted so as to sandwich the rod (33). The other end of the rod (33) is connected to the arm (30b) of the left bell crank (30), and both bell cranks (30) (30) rotate in conjunction with each other. At the other end of the support rod (34), both side surfaces are open, and a female screw (35) is formed inside. A male screw (70) protruding from a motor (7) fixed to the apparatus body (1) is screwed into the female screw (35) on the right side of the support base (10). As will be described later, the support rod (34) is driven to the right by the power of the motor (7), and the bell crank (30) is pulled by the support rod (34) to rotate in the counterclockwise direction. The roller (31) pushes the door holder (82) against the tension spring (84) to drive the door holder (82) backward. The mechanism from the motor (7) to the bell crank (30) constitutes the front-rear operation mechanism (3).

(Lower Opening / Closing Device) As shown in FIG. 4, the lower end of the door (4) is held by a door holder (90), and the shaft (92) protruding downward from the door holder (90) has a shaft (92). The guide roller (91) is rotatably fitted. The guide roller (91) is slidably guided back and forth by a rail (9) mounted on the device body (1), and the door (4) is moved left and right along the rail (20) and the rail (9). Sliding. The length of the rail (9) is more than twice the width W of the door (4) because the door (4) opens in a sliding door type. As described above, since the lower end of the fixed wall (6) is located above the lower end of the door (4), it does not hinder the rail (9) from sliding back and forth.

A rail (9) has a frame (5) whose front end projects from the front surface of the device body (1), and a lower surface of the frame (5) has a frame (5) as shown in FIG. ) Corresponding to both ends of the device main body (1), and faces the upper surfaces of the support bases (50) (50) mounted on the lower surface of the device body (1). As shown in FIG. 9, a bearing plate (51) having a plurality of rollers (52) and (52) on the upper surface of each support base (50) is arranged so that the axial direction of the rollers (52) is directed to the left and right. Each roller (52) is attached to the lower surface of the frame (5). Therefore, the frame (5) can slide forward and backward by the rotation of the roller (52) of the bearing plate (51). Further, the protrusions (53) and (53) protruding from the lower surface of the frame (5) are fitted on the outer sides of both ends of the roller (52) to restrict the lateral movement of the frame (5) and prevent rattling of the frame (5). .

As shown in FIGS. 3, 7 and 8, columns (11) and (11) are erected on the bottom plate of the apparatus main body (1) to the left and right, and project upward from each column (11). The bell crank (30) is rotatably fitted to the support shaft (12). A shaft (32) is provided on one arm (30b) of the bell crank (30), and the rod (33) and one end of the support rod (34) are fitted to the shaft (32). The female screw (35) formed on the inner side of the other end of the support rod (34) is screwed to the male screw (70) protruding from the motor (71) attached to the device body (1). . The motor (71) is driven in synchronization with the motor (7) of the upper switchgear (100), but the detailed description of the driving circuit is omitted. The other arm portion (30a) of each bell crank (30) is clamped by a guide plate (93) attached to the lower surface of the rail (9). Therefore, in the lower opening / closing device (110) as well as in the upper opening / closing device (100), the front / rear operation mechanism (3) for fitting the door (4) is provided, and the fixed wall (6) of the door (4) is provided. Fitting into the opening (60) between (6) is performed by the front / rear operation mechanism (3) of the upper opening / closing device (100) and the lower opening / closing device (110).

(Opening / Closing Operation) From the state where the door (4) is opened, the door (4) is horizontally moved to fit the door (4) into the opening (60) between the fixed walls (6) and (6). Will be explained. First, the motor (21) shown in FIG. 3 is driven to rotate the belt (22), and along the rail (20), the support tool (24), the mounting tool (25), the support bracket (8), the door retainer ( Move 82) to the left. At this time, since the roller (31) of the bell crank (30) is separated from the door holder (82) (see FIG. 5 (a)), the door holder (82) can slide smoothly. When the door (4) is conveyed to the position facing the opening (60), the detection switch (not shown) provided in the main body (1) of the device is pushed in and the rotation of the motor (21) is stopped. At the same time, the motor (7) rotates clockwise. At the same time, the motor (71) also rotates.

The rotation of the motor (7) also attempts to rotate the female screw (35) screwed into the male screw (70), but the rotation of the support rod (34) is restricted by the shaft (32). Therefore, the support rod (34) moves to the right from the state shown in FIG. 5 (a). As shown in FIG. 5 (b), the left bell crank (30) is also rotated counterclockwise by being pulled by the rod (33). The roller (31) of the arm (30a) of the bell crank (30) pushes the door holder (82) backwards against the tension spring (84). The door retainer (82) slides along the shaft (80), and from the state shown in FIG. 10 (a), the frame (5) slides on the rollers (52) of the support base (50). , Retract inside the device body (1).

In the state shown in FIG. 10 (b), when the door (4) comes into contact with the stoppers (13) (13) provided at the inner rear end of the apparatus body (1), the door holder (82) ) Pushes the limit switch (14) provided in the device body (1) to stop the rotation of the motor (7). At this time, the door (4) fits into the opening (60), and the roller (31) keeps contacting the door holder (82). On the other hand, the bell crank (30) of the lower opening / closing device (110) is rotated by the rotation of the motor (71), and the door holder (90) is slid backward via the rail (9). In this way, the lower opening / closing device (110) and the upper opening / closing device (100) work together to push the door (4) into the opening (60).

When the door (4) is opened, from the state shown in FIG. 5 (b), the motor (7) is rotated counterclockwise and the bell crank (30) is rotated clockwise so that the bell crank (30) is rotated. Release the contact between the roller (31) and the door holder (82). The tension spring (84) returns the door holder (82) to the front, and the door (4) separates from the fixed wall (6). At the same time, the motor (71) is also rotated and the rail (9) is pulled back by the clockwise rotation of the bell crank (30). When the bush (81) is in contact with the stopper (83) and the door holder (82) is completely pulled back, the door holder (82) has a detection switch (not shown) in the main body (1). Is pushed, the rotation of the motors (7) and (71) is stopped. At the same time, the motor (21) shown in FIG. 3 rotates, the door (4) slides to the right along the rails (20) and (9), and the door (4) opens.

When the door is open, an operator may stand on the frame (5) or put an exhibit or the like on the frame (5) for the convenience of work. Therefore, although a large weight is added to the frame (5), since the frame (5) is always supported by the support base (50) as described above, the amount of bending deformation can be suppressed, and the work can be performed safely. . In the door opening / closing device according to the present embodiment, the motor (7) for driving the front and rear operation mechanism (3) is provided independently of the horizontal operation mechanism (2), and therefore the horizontal operation mechanism (2) is The weight can be reduced and the horizontal operation mechanism (2) can be driven smoothly. Further, the door (4) has its upper and lower ends supported by the door holders (82) (90), and the roller (31) provided on the bell rank (30) contacts the door (4). , Drive backwards and fit into opening (60). In the conventional front-rear operation mechanism using a solenoid valve, if an accident such as a power failure occurs during front-rear driving, the contact between the door (4) and the front-rear operation mechanism is released and the door (4) moves. , There is a risk of tilting and falling. According to the contents of the present embodiment, the upper and lower ends of the door (4) are supported by the door holders (82) (90), and the roller (31) moves the door (4) during the front-back driving operation. Since it is in contact with 4), the door (4) is restrained even during a power failure, and there is no danger of falling.

The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the scope of the utility model registration request or reducing the scope. Further, the configuration of each part of the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various modifications can be made within the technical scope described in the scope of claims for utility model registration. For example, in the above embodiment, the front and rear operation mechanism (3) is driven by the rotation of the bell crank (30), but a configuration as shown in FIG. 13 is also possible. It pivots one end of the connecting rod (300) to the leading end of the rod (33). The other end of the connecting rod (300) is pivotally supported on the connecting shaft (301) orthogonal to the door holder (82). One end of a rotating rod (302) having a half length of the connecting rod (300) is pivotally supported at the center of the connecting rod (300), and the other end is rotatable to the device body (1). Attach to. When the rod (33) slides left and right, the rotating rod (302) rotates, and the connecting shaft (301) and the door holder (82) slide back and forth via the connecting rod (300).

As shown in FIG. 14, a flexible cable (400) is attached to the tip of the rod (33), and the cable (400) is mounted on the bearing (401) and the bearing (40) on the apparatus body (1). By connecting to the door holder (82) through the bearing (402) orthogonal to 1), left and right sliding of the rod (33) can be converted into forward and backward sliding of the door holder (82). Further, in the above embodiment, the frame (5) is slidable by the rotation of the roller (52), but the roller (52) can be replaced with, for example, a ball or the like.

[Brief description of drawings]

FIG. 1 is a perspective view of a door opening / closing device.

FIG. 2 is a plan view showing a state in which a door is opened and closed in the embodiment and the conventional example.

FIG. 3 is a front view of a door opening / closing device in which an upper opening / closing device and a lower opening / closing device are enlarged.

FIG. 4 is an enlarged sectional view of an upper opening / closing device and a lower opening / closing device taken along the line AA in FIG. 3.

5A and 5B are plan views showing a state in which the front-rear operation mechanism pushes the door backward.

FIG. 6 is a sectional view taken along line BB in FIG. 5 (a).

FIG. 7 is a plan view of a front-back operation mechanism of the lower opening / closing device.

8 is a view of FIG. 7 viewed from the direction C. FIG.

FIG. 9 is a perspective view of a support base that supports a frame.

10 (a) and 10 (b) are side views showing a state in which the door is slid back and forth, partially broken away.

FIG. 11 is a perspective view showing a positional relationship between a door and a fixed wall.

FIG. 12 is a perspective view of a conventional door opening / closing device.

FIG. 13 is a plan view of a front-back operation mechanism according to another embodiment.

FIG. 14 is a plan view in which a part of a front-rear operation mechanism according to still another embodiment is cut away.

[Explanation of symbols]

 (2) Horizontal operation mechanism (3) Front-rear operation mechanism (4) Door (5) Frame (7) Motor (50) Support stand (200) Display case

Claims (2)

[Scope of utility model registration request] 1. A door (4) is provided on the front surface of the display case (200) substantially in the same plane as the fixed wall (6), and the door is substantially parallel to the fixed wall (6).
The horizontal operation mechanism (2) that slides (4) and the front-rear operation mechanism (3) that moves the door (4) back and forth with respect to the place where the door (4) should be fitted to attach and detach the door (4). In the provided door opening / closing device, the front-back operation mechanism (3) is independent of the horizontal operation mechanism (2),
A door opening / closing device characterized by being driven via a link mechanism by a motor (7) installed near the installation position of the door (4). 2. The door (4) is connected to a frame (5) protruding from the front of the display case (200), and the front and rear operation mechanism (3) allows the frame (5) to be displayed from the front of the display case (200). It is operated so that it can be retracted and retracted, and below the frame (5), a member that contacts the lower surface of the frame (5) and guides the sliding of the frame (5) is provided. When a vertical load is applied to the frame (5). The door opening / closing device according to claim 1, wherein a support base (50) for suppressing the flexural deformation of the door is provided in the display case (200).