JP7114063B2 - shutter - Google Patents

Description

TECHNICAL FIELD The present invention relates to a shutter that has high opening and closing operability and is suitable for opening and closing an opening of a tall housing.

2. Description of the Related Art In recent years, a medicine container used indoors in a hospital or the like has been known in which a multi-level drawer-like shelf is provided in a housing, and one week's medicine palette for a patient is stored in each shelf. Such medication containers are open at the front of the housing and must be closed when not in use. As an opening door for a medicine container with a height of 1 m to 2 m, a hinged door and a shutter are conceivable. On the other hand, however, the shutter generally requires an initial pull-up force or is closed forcefully at the beginning and end of the opening and closing processes, resulting in poor opening/closing operability.

On the other hand, there is known a shutter having an assist structure that enhances the opening/closing operability of the shutter door. For example, Japanese Patent Application Laid-Open No. 2008-297709 discloses that a plurality of shutter door constituent members each having a main body portion, a connecting concave portion, and a connecting convex portion are formed by extrusion molding of a resin material, and two adjacent shutter doors are formed. By relatively moving the members in the longitudinal direction, the connecting concave portion of one shutter door constituent member and the connecting convex portion of the other shutter door constituent member are engaged with each other, thereby mutually connecting the plurality of shutter door constituent members. In the shutter constituting the shutter door, a guide rail for guiding the shutter door is provided, and when the shutter door is open, the shutter door is biased in a closing direction, and the shutter door is closed. A plurality of mutually connected shutters are provided with two coil springs for urging the shutter door in a direction to open the shutter door, and one end of the two coil springs are locked to the housing to which the shutter door is attached. A shutter door constituent member in which the other ends of two coil springs are locked to one shutter door constituent member of the door constituent members, and the other end of the two coil springs are locked, and the shutter door A reinforcing plate is provided for integrating the adjacent shutter door structural member connected to the structural member, and the shutter door structural member to which the other ends of the two coil springs are locked is attached to the adjacent shutter door. In order to prevent rotation with respect to the structural member, the shutter door structural member to which the other ends of the two coil springs are locked is pressed against the reinforcing plate, and the reinforcing plate is bent into a U-shape. (Claim 1). With the shutter disclosed in Japanese Patent Application Laid-Open No. 2008-297709, the opening and closing operability of the shutter door can be improved as compared with the case where the two coil springs are not provided. That is, when the shutter door is opened and closed, a weak force is sufficient for pulling up and down in the early stage, and the momentum can be suppressed in the latter stage to open and close gently.

JP 2008-297709 A

However, the shutter disclosed in Japanese Patent Application Laid-Open No. 2008-297709 requires long two coil springs in the case of a tall housing, which poses problems in terms of material cost, determination of spring biasing force, and spring life. Become.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a shutter that has good opening/closing operability of the shutter door and that allows the use of a short coil spring even if the housing is tall.

That is, the present invention solves the above-mentioned conventional problems by pulling up to open the front opening of the housing and pulling it down to close the opening. It has a shutter door that is housed in the rear part from the plate part, and an assist structure part that assists the opening and closing of the shutter door attached to the rear side of the housing, and the assist structure part has the shutter door opened. a pair of spring bodies that bias the shutter door in the direction of closing it when the shutter door is closed, and biasing the shutter door in the direction of opening it when the shutter door is closed; A rail part that is partial length with respect to the height and extends along the movement direction of the shutter door, and a movement that engages with the rail part and is movable within the rail part, and fixes one end of the spring body. A shutter comprising: a locking portion; and a fixed locking portion for fixing the other end of the spring body attached to the rear portion of the shutter door.

Further, according to the present invention, the rail portions are attached to the inner sides of the rear portions of the left and right side plates forming the housing so as to face each other, and the fixed locking portions are provided on the outer side surfaces of the rear portion of the shutter door and in the central portion. , wherein the pair of spring bodies are stretched in a reverse V-shaped spring-biased state in a rear view when the shutter door is closed. be.

In addition, the present invention has a rear plate of the housing positioned in front of the rear portion of the open shutter door,
The rail portion is attached to the center portion in the left-right direction of the back plate of the housing, and the fixed locking portion is attached to the inner side surface of the rear portion of the shutter door and to both side portions in the left-right direction. The shutter is characterized in that the pair of spring bodies are stretched in a V-shaped spring-biased state when viewed from the back in the closed state.

The present invention also provides the shutter, wherein the spring body is a coil spring.

Further, the present invention provides the shutter, wherein the spring body is in a substantially non-biased contracted state when the moving locking portion moves within the rail portion.

According to the present invention, it is possible to provide a shutter that has good opening/closing operability of the shutter door and that can use a short coil spring even if the housing has a high height. That is, the spring force acting as an assist acts on a region other than the region occupied by the rail member in the vertical direction, and the length of the spring may be short.

It is a perspective view of the shutter in the 1st Embodiment of this invention. 2 is a perspective view of the shutter of FIG. 1 as seen from the rear; FIG. Figure 2 is a rear view of the shutter of Figure 1; 2 is a perspective view of the shutter of FIG. 1 at the end of the first assist step; FIG. Figure 5 is a rear view of the shutter of Figure 4; 2 is a perspective view of the shutter of FIG. 1 at the end of an intermediate process after a first assist process; FIG. FIG. 7 is a perspective view of the shutter of FIG. 6 at the beginning of a second assist step; 2 is a perspective view of the shutter of FIG. 1 in an open state; FIG. 9 is a perspective view of the shutter of FIG. 8 as seen from the rear; FIG. 2 is an exploded perspective view of the shutter of FIG. 1; FIG. FIG. 5 is a perspective view of a shutter according to a second embodiment of the invention; 12 is a perspective view of the shutter of FIG. 11 as seen from the rear; FIG. Figure 12 is a rear view of the shutter of Figure 11; FIG. 12 is a perspective view of the shutter of FIG. 11 at the end of the first assist step; Figure 15 is a rear view of the shutter of Figure 14; FIG. 12 is a perspective view of the shutter of FIG. 11 at the end of the intermediate process after the first assist process; FIG. 17 is a perspective view of the shutter of FIG. 16 at the beginning of a second assist step; 12 is a perspective view of the shutter of FIG. 11 in an open state; FIG. Figure 19 is a rear perspective view of the shutter of Figure 18; 12 is an exploded perspective view of the shutter of FIG. 11; FIG.

In this specification, "vertical" and "backward" refer to directions in which the shutter is installed. In the shutter of the present invention, as the shutter door, a flexible resin plate having a predetermined length and a predetermined width and a body portion, a connecting concave portion, and a connecting convex portion as described in Japanese Patent Application Laid-Open No. 2008-297709 and a connecting body of shutter door constituent members. When opening the shutter door, it is manually pulled up, moved from the upper side to the back side, and stored on the back side. When closing, the front opening is closed, for example, by pulling down the handle located at the top.

The housing in which the shutter of the present invention is used preferably has a height of approximately 1 m to 2 m, and examples thereof include medicine containers used in hospitals and the like. Even if the height is about 2 m, the length of the two spring bodies may be short, and the opening and closing operability of the shutter door is good. The guide portion into which the both side edges of the shutter door are fitted and movably loosely fitted may be a groove having an I-shaped cross section, preferably a groove that is continuous on both sides of the front opening, the ceiling space, and both sides of the back surface.

The spring body of the present invention includes a rubber wire rod and a coil spring, and among these, the coil spring is preferable in terms of spring performance and durability.

Next, a shutter according to a first embodiment of the invention will be described with reference to FIGS. 1 to 10. FIG. The shutter 10 has a shutter door 1 and an assist structure 2A. The shutter door 1 has a width dimension slightly larger than the opening width of the front opening of the housing, and a depth dimension such that, in the closed state, it reaches the back surface via the ceiling space, and the rear end is the upper part of the back surface. It is a flexible plate-like body made of resin. By positioning the rear end of the shutter door 1 on the upper part of the back surface, it can be connected to the assist structure 2A installed on the back side of the housing. That is, the shutter door 1 is pulled up to open the front opening x of the housing 9 and pulled down to close the opening x. Stored in the back. A handle 111 for raising and lowering the shutter door 1 is formed on the front part of the shutter door 1 . The housing 9 has a top plate 91, left and right side plates 92a and 92b, and a back plate 93, and guide grooves 96 for guiding the shutter door 1 are formed on both sides of the front opening, above the ceiling, and on both sides of the back. In the figure, the reference X indicates the front side, and the reference Y indicates the rear side.

The assist structure 2A used in the shutter 10 is attached to the back side of the housing 9 and assists the opening and closing of the shutter door 1. As shown in FIG. The assist structure portion 2A has a pair of coil springs 2a and 2b and rail portions 3a and 3b. The two coil springs 2a, 2b have the same spring characteristics and the same length. On the outside surface (rear surface) and central portion of the rear portion 12 of the shutter door 1, there is provided a fixed locking portion 4 for locking one end of each of the two coil springs 2a and 2b. The fixed engaging portion 4 is attached to the center in the left-right direction of an elongated metal fixed plate-like body 113 attached to the center of the rear portion 12 of the shutter door 1 . As a result, the fixed locking portion 4 can be firmly fixed to the shutter door 1 made of resin. The fixed locking portion 4 is a screw-shaped projection in this example.

The rail portions 3a and 3b are attached to the housing 9 side. That is, the housing 9 is formed with a pair of left and right members 921a and 921b located behind the back surface portion 115 of the opened shutter door, and the rail portions 3a and 3b are formed on the pair of left and right members 921a and 921b. It is attached to the central part in the height direction at a position facing each other with a partial length with respect to the total height. In this example, the pair of left and right members 921 a and 921 b are left and right side plates of the housing 9 and inner side surfaces behind the guide groove 96 .

Each of the rail portions 3a and 3b is a long plate-shaped body with a vertically elongated locking groove formed therein, and the center in the longitudinal direction is the fixed locking portion 4 in the state where the shutter door 1 is closed. It is preferable that the center (half) of the length (h ₂ ) between the position and the position of the fixed locking part 4 in the open state (see FIG. 3). The recessed locking groove has a groove opening facing the inside of the housing, and a groove with a small opening width and a large internal groove width facilitates locking of the movable locking portions 5a and 5b, and This is preferable in that it is easy to move in the direction in which the shutter door 1 moves within the locking groove. As a result, the initial first assist distance and the final second assist distance match, making it easier to open and close. The rail portions 3a and 3b have a partial height with respect to the total height, and the groove length (h ₁ ) of the rail portions 3a and 3b is 1/3 to 3/4 of (h ₂ ). Preferably, it is around 1/2. If the groove length (h ₁ ) is too long, the assist distance will be short, and if the groove length (h ₁ ) is too short, the assist distance will be long and the spring length will be large. The total height has the same meaning as the moving length of the shutter door 1 . Moving locking portions 5a and 5b are locked to the rail portions 3a and 3b. The moving locking portions 5a and 5b are locked in the grooves of the rail portions and are movable within the grooves of the rail portions.

Of the two coil springs 2a and 2b, the contracted length of one coil spring is about half the distance between the opposing rail portions 3a and 3b. During the movement of , the contracted state without biasing is sufficient, which is preferable in that the length of the spring can be shortened. One end of one coil spring 2a is locked to the fixed locking portion 4, and the other end is fixed to the moving locking portion 5a. Another coil spring 2b has one end locked to the fixed locking portion 4 and the other end fixed to the movable locking portion 5b. When the shutter door 1 is closed, the two coil springs 2a and 2b are stretched in an upside-down V shape in a rear view with the springs being biased (see FIG. 3).

Next, the opening/closing operation of the shutter door 1 in the shutter 10 will be described. The state in which the shutter door 1 closes the front opening x of the housing 9 is shown in FIGS. 1 to 3. FIG. In this state, the two coil springs 2a and 2b are engaged with the stationary engaging portion 4 at one end and the moving engaging portions 5a and 5b at the other end, respectively, in an inverted V shape. It is stretched (see FIG. 3). In this state, the two coil springs 2a and 2b urge the shutter door to open. Therefore, when the shutter door 1 is lifted upward, it can be lifted with a smaller force than when the coil springs 2a and 2b are not provided. When the shutter door 1 is pulled up, the spring biasing of the coil springs 2a and 2b is applied until the two coil springs 2a and 2b are in a horizontal state. It stops and is assisted to the partially opened state shown in FIGS. 4 and 5 (first assisting step). As shown in FIGS. 2 and 3, the shutter door 1 is stationary when the two coil springs 2a and 2b are urged. This is because the frictional force of

Next, when the shutter door 1 is continued to be pulled up, the unassisted process shown in FIGS. 4 and 5 is performed. That is, when the two coil springs 2a and 2b are placed in a horizontal state and the shutter door 1 is pulled up, the two coil springs 2a and 2b maintain the horizontal state while the moving locking portions 5a and 5b move toward the rail portions 3a and 3a. It will move downwards in the groove of 3b (FIGS. 6 and 7). Although FIGS. 5 to 7 are processes without assistance, the force to pull up the shutter door 1 continues, and the shutter door 1 can be opened smoothly.

Furthermore, if the shutter door 1 is kept open, the moving locking portions 5a and 5b for locking the two coil springs 2a and 2b stop at the lower ends of the rail portions 3a and 3b, so that the two horizontal coil springs 2a and 2b are not in the rear view. , it becomes a V-shaped state in a spring biased state (FIG. 9). That is, in the later stage of pulling up the shutter door 1, the two coil springs 2a and 2b urge the shutter door 1 in the direction of closing it, so that the force of opening the shutter door 1 is suppressed, and the opening operation ends gently and quietly. (Second assist step).

According to the shutter 10, the opening and closing operability of the shutter door 1 is good, and a short coil spring is sufficient even if the housing 9 is tall. That is, the spring force acting as an assist acts on regions other than the regions occupied by the rail members 3a and 3b in the vertical direction, and the length of the spring may be short.

Next, a shutter 10a according to a second embodiment of the invention will be described with reference to FIGS. 11 to 20. FIG. The shutter 10a has a shutter door 1 and an assist structure 2B. The shutter door 1 has a width dimension slightly larger than the opening width of the front opening of the housing, and a depth dimension such that, in the closed state, it reaches the back surface via the ceiling space, and the rear end is the upper part of the back surface. It is a flexible plate-like body made of resin. By locating the rear end of the shutter door 1 on the upper part of the back surface, it can be connected to the assist structure 2B installed on the back side of the housing. That is, the shutter door 1 is pulled up to open the front opening x of the housing 9 and pulled down to close the opening x. Stored in the back. The housing 9 has a top plate 91, left and right side plates 92a and 92b, and a back plate 93, and guide grooves 96 for guiding the shutter door 1 are formed on both sides of the front opening, above the ceiling, and on both sides of the back. In the figure, the reference X indicates the front side, and the reference Y indicates the rear side.

The assist structure 2B used in the shutter 10 is attached to the back side of the housing 9 and assists the opening and closing of the shutter door 1. As shown in FIG. The assist structure portion 2B has a pair of coil springs 2c and 2d and one rail portion 6. As shown in FIG. The two coil springs 2a, 2b have the same spring characteristics and the same length. Fixed locking portions 4a and 4b are attached to the inner side and both side portions of the rear portion 12 of the shutter door 1 to lock one end of each of the two coil springs 2c and 2d. The fixed engaging portions 4 a and 4 b are attached to the left and right ends of a metal elongated fixed plate-like body 113 a attached to the rear end portion of the shutter door 1 . As a result, the fixed locking portions 4a and 4b can be firmly fixed to the shutter door 1 made of resin. The fixed locking portions 4a and 4b are screw-shaped protrusions in this example.

The rail portion 3c is the back plate 93 of the housing 9 and is attached to the central portion in the left-right direction in a vertically long shape. The rear plate 93 is positioned in front of the rear portion of the opened shutter door 1, and when viewed from the front, the assist structure 2B positioned behind the rear plate 93 cannot be seen. The rail portion 3c is attached to the central portion of the back plate 93 in the height direction so as to have a partial length with respect to the total height. The total height has the same meaning as the moving length of the shutter door 1 .

The rail portion 3c is a long plate-like body in which a vertically long recessed engagement groove is formed, and the center in the length direction is the fixed engagement portion 4a in the state where the shutter door 1 is closed. It is preferable that the position of 4b and the center (half) of the length (h ₄ ) between the positions of the fixed locking portions 4a and 4b in the open state (see FIG. 13). The groove mouth of the recessed locking groove faces the rear side, the width of the opening is small, and the width of the internal groove is large, so that the movable locking portion 5c can be easily locked and moved. is preferred. As a result, the initial assist distance and the final assist distance match, making it easier to open and close. The groove length (h ₃ ) of the rail portion 3c is 1/3 to 3/4 of (h ₄ ), preferably about 1/2. If the groove length (h3) of the rail portion _3c is too long, the assist distance will be short, and if the groove length ₍ h3) is too short, the assist distance will be long and the spring length will be large. A movable locking portion 5c is locked to the rail portion 3c. The movement locking portion 5c is locked in the groove of the rail portion 3c and is movable in the direction in which the shutter door 1 moves within the groove of the rail portion 3c.

Of the two coil springs 2c and 2d, the contracted length of one coil spring is set to about half the distance between the left and right fixed locking portions 4a and 4b, so that the movable locking portion 5c can move within the rail portion 3c. During this period, it is in a contracted state without spring biasing, which is preferable in that the length of the spring can be shortened. One end of one coil spring 2c is locked to the fixed locking portion 4a, and the other end is fixed to the moving locking portion 5c. Another coil spring 2d has one end locked to the fixed locking portion 4b and the other end fixed to the movable locking portion 5c. When the shutter door 1 is closed, the two coil springs 2c and 2d are stretched in a V-shape in a rear view with the springs being biased (see FIG. 13).

Next, the opening/closing operation of the shutter door 1 in the shutter 10a will be described. The state in which the shutter door 1 closes the front opening x of the housing 9 is shown in FIGS. 11 to 13. FIG. In this state, the two coil springs 2c and 2d are engaged with the fixed engaging portions 4a and 4b at one end and the moving engaging portion 5c at the other end, respectively, in a V-shaped state. stretched (
See Figure 13). In this state, the two coil springs 2c and 2d urge the shutter door 1 in the opening direction. Therefore, when the shutter door 1 is lifted upward, it can be lifted with a smaller force than when the coil springs 2c and 2d are not provided. When the shutter door 1 is pulled up, the spring force of the coil springs 2c and 2d is applied until the two coil springs 2c and 2d are in a horizontal state, and the moving locking portion 5c is stopped at the upper end 61 of the groove of the rail portion 3c. , is assisted to the partially opened state shown in FIGS. 14 and 15 (first assisting step). As shown in FIGS. 12 and 13, the shutter door 1 is stationary when the two coil springs 2c and 2d are urged. This is because the frictional force of

Next, when the shutter door 1 is continued to be pulled up, the unassisted process shown in FIGS. 14 and 15 is performed. That is, when the two coil springs 2c and 2d are placed in a horizontal state and the shutter door 1 is further lifted, the two coil springs 2c and 2d maintain their horizontal state and the movement locking portion 5c is moved into the groove of the rail portion 3c. downwards (FIGS. 16 and 17). Although FIGS. 15 to 17 are processes without assistance, the force to pull up the shutter door 1 continues, and the shutter door 1 can be opened smoothly.

Further, if the shutter door 1 continues to be opened, the moving locking portion 5c that holds the two coil springs 2c and 2d stops at the lower end 62 of the rail portion 3c, so that the two coil springs 2c and 2d in the horizontal state are in the spring-biased state. It becomes an inverted V-shaped state (FIG. 19). That is, since the two coil springs 2c and 2d urge the shutter door 1 in the closing direction, the force of opening the shutter door 1 is suppressed, and the opening operation is completed gently and quietly (second assist step).

According to the shutter 10a, the opening/closing operability of the shutter door 1 is good, and a short coil spring is sufficient even if the housing 9 is tall. That is, the spring force acting as an assist acts on a region other than the region occupied by the rail member 3c in the vertical direction, and the length of the spring may be short.

The present invention is not limited to the above embodiments, and various modifications can be made. In the first embodiment, the rear plate of the housing may be omitted. In this case, when the shutter door 1 is opened, although the assist structure 2A can be seen from the front of the housing, the assist action is not affected. Also, the housing provided with the shutter 1 of the present invention may be placed horizontally. In this case, the shutter 1 is opened and closed laterally. The handle 111 of the shutter door 1 is not limited to the gripping shape shown in FIG.

According to the present invention, it is possible to provide a shutter that has good opening/closing operability of the shutter door and that can use a short coil spring even if the housing has a high height. For this reason, the effects are particularly noticeable in relatively tall items used indoors, such as medicine containers used in hospitals.

1 Shutter doors 2A, 2B Assist structure parts 2a to 2d Coil springs 3a to 3c Rail parts 4, 4a, 4b Fixed locking parts 5a to 5c Moving locking part 9 Housings 10, 10a Shutter 91 Top plate 92a, 92b Left and right side plates 93 Rear plate 96 Guide groove

Claims (3)

a shutter door that is pulled up to open the front opening of the housing and pulled down to close the opening;
an assist structure that assists the opening and closing of the shutter door attached to the back side of the housing,
The assist structure includes a pair of spring bodies that urge the shutter door in the direction of closing the shutter door when the shutter door is open, and urge the shutter door in the direction of opening the shutter door when the shutter door is closed;
a rail part that is part of the total height and extends along the direction of movement of the shutter door at the center part in the height direction of the rear surface of the housing;
a moving locking portion that locks onto the rail portion, is movable within the rail portion, and fixes one end of the spring body;
a fixed locking portion for fixing the other end of the spring body attached to the rear portion of the shutter door;
having a rear plate of the housing positioned in front of the rear portion of the open shutter door,
The rail portion is attached to a central portion in the left-right direction of the back plate of the housing,
The fixed locking portions are attached to the inner side surface of the rear portion of the shutter door and to both side portions in the left-right direction,
A shutter, wherein a pair of spring bodies are stretched in a V-shaped spring-biased state in a rear view when the shutter door is closed . 2. The shutter according to claim 1 , wherein the spring body is a coil spring. 3. A shutter according to claim 1 or 2 , wherein the spring body is in a substantially unbiased contracted state when the moving catch moves within the rail.

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