JPS6015460Y2 - Multi-stage drawer cabinet - Google Patents

Description

[Detailed description of the invention] This invention provides a cabinet with multiple drawers.
This invention relates to a double drawer prevention device that prevents a cabinet from tipping over due to pulling out a plurality of drawers at the same time.

Drawer-type filing cabinetsIn particular, in cabinets with wide openings and multiple drawers with short depths, by pulling out multiple drawers forward at the same time, the center of gravity shifts to the front and the cabinet There is a risk that the entire unit will fall forward.

In particular, if the front wall of each drawer is made of heavy thick wall such as fire-resistant concrete, there is a great risk of the drawer falling over.

In addition, in this type of fireproof cabinet, the side plates, top plate, and base plate of the main body are also constructed of fireproof walls, so there is a limitation that the gap between the drawer and the main body is narrower than in the case of a normal cabinet.

By the way, conventional double drawer prevention devices usually have a vertically movable rod with a locking piece attached to the inner surface of the side plate of the cabinet body so as to be able to slide up and down, while an inclined guide part is provided on the suspension of the drawer to prevent the drawer from being pulled out. When the vertically movable rod is raised by the inclined guide portion, the other drawers are blocked from advancing by the locking pieces and cannot be pulled out.

However, in cases where the vertically moving rod is moved up and down using the inclined guide section provided on the suspension,
The structure of the suspension is complicated and difficult to manufacture and assemble, and a certain amount of space is required between the outside surface of the drawer and the inside surface of the cabinet body. This has been difficult to apply to fixtures that require narrowing the gap between them.

In this invention, instead of providing an inclined guide part on the suspension as in the past, a substantially F-shaped inclined guide piece is protruded from the outer surface of the drawer, and when the vertical movement lever is raised by this guide piece, the vertical movement can be made. The engaging protrusion provided on the rod engages with another drawer to prevent the other drawer from being pulled out, and a horizontal movement latch supported on the inner side surface of the cabinet body so as to be slidable left and right is connected to the upper and lower sides of the cabinet. By engaging this horizontal moving latch with the vertical moving lever, the vertical moving lever is held in the raised position, and other drawers continue to be restricted from being pulled out. It is connected so that the engagement between the moving latch and the vertical moving rod is released and the vertical moving lever is lowered, allowing each drawer to be drawn out.Of course, it fully fulfills the function of preventing double drawers. It is possible to install the suspension without any trouble regardless of the position of the suspension or the like even when there is only a narrow space.

Next, the present invention will be explained based on an embodiment drawing in which the present invention is applied to a three-drawer type fireproof filing cabinet. 1 is the cabinet body, its top plate 2, back plate 3 base plate, and left and right side plates 4.
, 4' are thick walls filled with fire-resistant concrete or the like.

A, B, and C are upper, middle, and lower drawers that can be freely pulled out toward the front side of the cabinet body 1, and rails 6 are provided horizontally along the outer surfaces of the left and right side plates 12 and 12' of each drawer. .6' is supported by suspensions 7 and 7' on rails 8 and 8' extending along the inner surfaces of the left and right side plates 4 and 4' of the cabinet body so as to be freely drawn out.

The front part 9 of each drawer A, B, and C is formed of a thick wall made of concrete or the like filled with a fireproof material, similar to the cabinet body 1, and a stepped part of the smoke return is formed between it and the front of the cabinet body. has been done.

A spring 10' is installed at the upper right end position of the front part 9 of the upper drawer A.
An oval push lock 10, which becomes locked when pushed in against the pressure, is provided so as to penetrate through a rear end protruding abutment portion 11 so as to protrude from the back surface of the front face portion 9 of the drawer A.

On the outer surfaces of the left and right side plates 12 and 12' of each drawer A, B, and C, vertically long stoppers 13.
13' is provided protrudingly, and a lock latch receiving member 14 and 14' having a letter-shaped shape in plan view is provided protruding from the lower part of the rear side thereof, and each of the latch receiving members 1
The front end protrusion 15 of No. 4 is formed tall, and a horizontal protrusion 16 is formed behind it, and a bypass lever 17 that can be selectively placed on the upper surface of either of the protrusions 15 or 16 is mounted on both protrusions 15. .16 is pivotably mounted between .16 and 16.

Further, a guide piece 18.18' having a front and rear inclined portion, such as a bow shape when viewed from the side, is provided at a position below the stopper 13.13' on the outer surface of the left and right side plates 12.12' of each drawer.

Reference numeral 19.19' denotes a pair of left and right horizontal rods mounted on the upper part of the inner surface of the left and right side plates 4.4' of the cabinet body so as to be movable in the horizontal front and back direction. An interlocking rod 21 that is in constant contact with the rear end abutting portion of the press lock 10 attached to the cabinet body, and whose center portion is pivotally attached to the lower surface of the top plate 2 of the cabinet body and is horizontally rotatable.
The left and right end portions of the horizontal rods 19 and 19' fit into the rear ends of the horizontal rods 19 and 19', and the horizontal rods 19 and 19' are configured to move in opposite directions.

22° 22' controls the movement of each horizontal rod via symmetrical bell crank levers 23, 23' connected to the horizontal rods 19, 19' on the inner surfaces of the left and right side plates 4° 4' of the cabinet body. A pair of left and right vertically movable levers are suspended so as to move up and down in the same direction in response to
When this moves upward by a certain distance H1, the stoppers 13 provided on the side plates 12 and 12' of each of the drawers A, B, and C
．． Engagement protrusions 24, 24, 24', 24', 24' are provided at positions substantially at the same height as the front surface of the lower end of 13', protruding in a direction opposite to the protruding direction of each of the stoppers 13, 13'. do.

Furthermore, the left and right vertical movement rods 22, 22' are pivoted with rotors 25 that roll along the sloped upper surfaces of the guide pieces 18, 18' that are attached to these when each drawer is moved back and forth. Accordingly, the pair of left and right vertically movable rods 22, 22' move up and down by a height corresponding to the vertical and downward difference H2 of the inclined guide pieces 18 and 18'.

At this time, by simply providing the trochanter 25 on only one of the left and right vertically movable levers and providing the corresponding inclined guide piece 18 on the side of the drawer, the left and right vertically movable levers 22 and 22' can be moved from the bell crank lever to the horizontal It can be moved up and down simultaneously in the same direction via the rod and connecting rod.

Further, on the inner surface of the left and right side panels 4, 4' of the cabinet, on the back side of the vertically moving rods 22 and 22', a horizontal moving latch 27°27' with a locking part 26 integrally formed at the front end is attached to a U-shaped support member 28. .28' so that it can be slid back and forth, and the upper, middle,
By constantly biasing the spring 29 in the direction of the rear end of the guide pieces 18 and 18' in each drawer in the lower tier, and by pulling out a drawer in an arbitrary tier, the rear ends of the guide pieces 18 and 18' move up and down on the vertically movable rod 22.
22', the respective horizontal movement latches 27, 27' are attached to the locking portions 30 provided on the respective vertical movement rods 22, 22'.
The front end locking portion 26 engages to prevent each vertical movement lever 22.22' from falling, and conversely, in response to the push-in movement of the drawer, the rear end of the guide piece 18.18' engages with the horizontal movement latch 27. 27' against the force of the spring 29, the engagement between the locking part 26 of the horizontal movement latch 27, 27' and the locking part 30 of the vertical movement rod 22, 22' is released, and the subsequent vertical movement The movable rods 22, 22' move downward in accordance with the downward locus of the roller 25 rolling on the upper surface of the guide pieces 18, 1B', and during this time the drawer stoppers 13, 13'
The structure is such that the engaging protrusions 24, 24' are moved back across the upper part of the engagement protrusions 24, 24', and at the end of the push-in end of the drawer, any stage of drawer movement is possible.

Furthermore, on the inner surfaces of the left and right side panels 4, 4' of the cabinet behind the left and right vertically movable rods 22, 22', there are lock latches 31.31' with a cross-section shaped like a letter for each drawer, and the vertical portions 32.32 of the lock latches 31.31' are connected to pins 33.31'. The pair of left and right vertically movable rods 22 are pivotally supported by 33' to be vertically movable, and the center of gravity is unevenly distributed or biased by a torsion spring so that the rear end side of each lock latch 31 and 31' rotates downward. , 22' are at the lowest position (the engaging protrusions 24, 24' of the vertically movable rods 22, 22' are lowered by H□ from the lower end of the stopper 13, 13'), each engaging protrusion 24, 24' is in contact with the upper surface of the front and rear straight portion 34 of each lock latch 31.31', and each lock latch 31.31'
The front and rear straight portions 34 of the lock latches 31 and 31' are placed in a horizontal state so that the latch receiving members 14, 14' of each drawer can pass forward and backward under the straight portions 34 of the lock latches 31, 31', and each of the retaining protrusions 24
, 24' and the latch 31.31' are released from contact, or when the respective engaging protrusions 24, 24' are moved upward, the lock latch 31.31' rotates rearward and downward to close the support member. 28.28', lock latch 31.31
'The rear end of the straight part 34 is the latch receiving member 14 of each drawer.
It is configured to block the front surface of the front end protrusion 15 of.

With the above configuration, the function of preventing double drawing of the drawer in the open state in which the press lock 10 attached to the front face of the upper drawer is not locked will be explained first.

When the upper, middle, and lower drawers A, B, and C are stored in the cabinet body 1 and the push-lock 10 is unlocked (the push-lock 10 protrudes from the front surface), a pair of left and right upper and lower drawers As shown by the two-dot chain lines in FIGS. 4 and 5, the movable rods 22 and 22' are in the lowered position so that each trochanter 25 is in contact with the upper surface of the guide piece 18 in each drawer. In this state, as shown in FIG. 3, when the handle 35 of the middle drawer B is engaged and the drawer B is pulled out forward as shown in the upper part of FIGS. 9a to 9b, the left and right side plates 12, 12 of the drawer B 'Slanted guide pieces 18, 18 protruding from the outer surface
As the trochanter 25 moves forward, the guide piece 18.18' moves forward.
move upward along the top surface of the

Therefore, each retaining protrusion 2 attached to the upper, middle, and lower positions of the vertically movable rod 22, 22' that rises integrally with this trochanter 25
4.24 also rises by the height H2 of the guide pieces 18 and 18'.

At this time, the stopper 13 in the middle drawer B has already passed above the corresponding engaging protrusion 24 at the middle position, but the other upper and lower drawers A and C are still housed in the cabinet body 1. Since the stopper 13 attached to each of these drawer left and right side plates 12 and 12'
．． Corresponding retaining protrusion 24.24 on the front side of 13'
' will block the movement of these drawers.

(In Figures 9a and 9b, the positional relationship in the lower drawer C is shown at the bottom).

At that time, the horizontal movement latch 27, which slides toward the rear end of the guide piece 18 of the middle drawer B by the force of the spring 29, has its front end locking part 26 at the position of the middle drawer B on the vertical movement lever 22. It engages with the locking part 30 and prevents the vertically movable rods 22, 22' from falling even when the relationship between the guide piece 18 and the trochanter 25 is lost due to the drawing movement of the drawer B, and the vertically movable rod 2
The raised position of 2° 22' can be maintained, so that when the upper drawer A1 and the lower drawer C are pulled out, the engaging protrusions 24, 24' at their respective height positions are placed on the front surface of each stopper 13, 13' in each stage. The abutting movement of each drawer is thus prevented.

This operation also works to make it impossible to draw out drawers in other tiers in the same way when drawers in other tiers are pulled out, thereby preventing the cabinet from tipping over due to the forward movement of the center of gravity of the cabinet.

Note that this configuration may be provided on both the left and right sides of the drawer, or only on either side.

Also, if you push in drawer B that has already been pulled out, this drawer B
The rear end of the guide piece 18.18' attached to the horizontal movement latch 27
．． 27 is pushed back by the force of the spring 29, and the vertical movement lever 22.
The locking part 30 at 22' is released, and the trochanter 25
is lowered along the upper surface of the guide pieces 8, 18', and correspondingly, the engaging protrusions 24, 24' at each stage are also restored to their original state by returning to a lower position than the lower end of the stopper 13° 13'. , only one arbitrary drawer can be pulled out.

Next, each drawer A, B is attached to the upper drawer A with a push lock 10.
To explain the locked state of drawers A and C, first, all drawers A and B are locked.
, C is housed in the cabinet body 1, and when the push lock 10 of the upper drawer A is pushed in, the horizontal rod 19' on the inner surface of the right side panel 4' of the cabinet body 1 is pushed backward, and the interlocking rod 20 at the rear end is pushed backward. Horizontal rod 19 attached to the left side plate 4 through
moves forward, and via these left and right horizontal rods 19.19' and bell crank levers 23.23', a pair of left and right vertically movable rods 22.22' move as shown by the solid lines in Figures 4, 5, and 9. As shown, only bows rise together.

From this, each of the locking protrusions 24.24' at the upper, middle, and lower positions of each vertically movable rod 22.22' moves upward, and each lock that is in contact with each of these engaging protrusions 24.24' Latch 31.31
' rotates rearward and downward, and the rear ends of each linear portion 34 are the front end protrusions 15.15 of each Latch-shaped latch receiving member 14.14' attached to the outer surface of the drawer left and right side panels 12.12' of each stage. 'Since the front is blocked, each drawer on each level cannot be pulled forward, meaning that it is locked.

Conversely, by inserting the key into the push lock 10 and releasing the lock, the push lock 10 is projected forward by the force of the spring 10', and the pair of left and right vertically movable rods 22 are operated in the opposite manner to the above.
．． 22' both descend downwardly, and each engaging protrusion 24.24
' is brought into contact with the upper surface of each lock latch 31, 31', and the latch 31, 31' is brought into a horizontal position to release the lock and enable forward movement of each drawer.

Note that when the locking mechanism is in operation, the trochanter 25.25' attached to the left and right pair of vertically movable rods 22.22' is the 10th trochanter.
As shown in the figure, the guide piece 18 rises by H3.
．． If the upper end of 18' is positioned above this by H4, even if the lock latch 31 and the latch receiving member 14 become disengaged, the guide piece 18 will still be able to roll when any drawer is pulled out. 25 and pushes up the vertical movement rod 22.22' by the number of bills as shown by the two-dot chain line in FIG.
, 13', and the drawers A, B, and C cannot be pulled out forward.

Moreover, if the bypass lever 17 attached to the latch receiving member 14 of a predetermined drawer is rotatably mounted on the upper surface side of the front end protrusion 15 as shown in FIG. As shown in the figure, even if the lock latch 31 rotates rearward and downward as the vertical movement lever 22 rises in response to the drawer movement of the drawer, its linear portion 34 passes through the upper surface of the bypass lever 17 and the latch receptacle Only the drawer concerned can be selectively pulled out without obstructing the front surface of the front end protrusion 15 of the member 14, and at this time as well, the engagement protrusions 24 in other stages are moved to the front surface of the stopper 13 by raising the vertical movement rod 22. It can be engaged to prevent double withdrawal.

Furthermore, in this embodiment, the lock latch 31 in one drawer is
A single protrusion 24 protruding from the vertical movement rod 22 serves as the engagement protrusion for contacting and releasing the engagement protrusion and the retaining protrusion on the front surface of the stopper 13 at the pull-out location. Of course, they can be separate.

In short, according to the present invention, when a drawer in a given tier is pulled out, all other tiers of drawers become unable to be pulled out.
This prevents the cabinet from tipping over due to shifting of its center of gravity, and it is possible to prevent the cabinet from falling over due to shifting of its center of gravity. For example, because there is a difference in travel amount or time lag between the back and forth movement of the drawer itself and the back and forth movement of the suspension, all the drawers can be pulled out only until the vertical movement lever moves upward due to the suspension, resulting in double Although withdrawals cannot be completely prevented,
According to the present invention, the vertical movement rod can be directly raised by the guide piece attached to the drawer side, and the vertical movement rod is raised by the drawer side guide piece according to the initial short distance of the drawer, and the double drawer By activating the prevention mechanism, the association between the guide piece on the drawer side and the horizontal movement latch on the cabinet body side is released, and at the same time, the vertical movement rod and the horizontal movement latch can be engaged, thereby ensuring that the vertical movement rod does not fall. It is possible to completely prevent double drawers without creating a time lag between the back and forth movement of the drawer and the vertical movement of the vertical movement rod, and it is possible to completely prevent double drawers by moving the drawer approximately perpendicularly to the vertical movement rod and in the direction of the back and forth movement of the drawer. Since the horizontal moving latch can be moved back and forth along the horizontal movement latch, the double drawer prevention operation can be smoothly and reliably performed.Moreover, once the vertical movement rod has been raised, it can be moved back and forth by engaging with the horizontal movement latch attached to the cabinet body, which is approximately perpendicular to the vertical movement lever. Since the state can be maintained, the weight of the vertical movement lever is not applied to the drawer or the suspension, and since the engagement can be easily released near the final position of pushing the drawer, the pull-out movement of the drawer can be maintained as described above. It is lighter and smoother than the conventional one, and in addition, the width of the device only needs to be at least the sum of the width of the vertically movable rod and the protruding dimension of the inclined guide piece.
It can be easily installed even if the space between the outside surface of the drawer and the inside surface of the cabinet body is narrow.

At the same time, each of these parts can be freely set independently of the suspension, so there is no need for the suspension structure to have a special or complicated shape, and the mounting location can be selected arbitrarily. It can be used in common with the vertical movement rod in the drawer locking mechanism, reducing the number of parts and having the effect of reducing costs.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; Fig. 1 is a front view of a multi-stage cabinet, Fig. 2 is a partially cutaway plan view thereof, Fig. 3 is a partially sectional right side view, and Fig. 4 is a right side view of the inside of the cabinet body. A side view of the main part, Figure 5 is a side view of the main part on the left inside the cabinet body,
Fig. 6 is a left side view of the drawer, Fig. 7 is a partial sectional view taken along the line ■-■ in Fig. 6, Fig. 8a and an explanatory drawing, Fig. 8 is a front sectional view of the cabinet body, Fig. 9a Figures 9b and 9b are diagrams for explaining the effect of preventing double drawers before and after the drawer, respectively.
Figure 0 is an action explanatory diagram showing the locked state, Figures 11 and 1.
2 is an explanatory diagram of the operation when the bypass lever is used, and FIG. 13 is an enlarged view taken along the xm-xm line of FIG. 10. 1... Cabinet body, 4, 4'...
・Left and right side plates, A, B, C...Drawers, 12.
12'...Drawer side plate, 13.13'...
・Stopper, 22, 22'...Vertical moving rod, 1
9, 19'... Horizontal rod, 21... Interlocking rod, 24, 24'... Engaging protrusion, 25...
... Trochanter, 18.18' ... Inclined guide piece, 2
7゜27'...Horizontal moving latch, 28.28...
...Supporting member, 26...Front end locking portion, 30.
...Latching portion, 29...Spring.

Claims (1)

[Scope of utility model registration request] In a cabinet in which a plurality of drawers are provided between the left and right side plates of the cabinet body so as to be movable back and forth, at least one of the left and right side plates of the cabinet body has a vertically movable rod vertically slidably suspended on one inner surface of the cabinet body. An inclined guide piece and a stopper are provided protrudingly on the outer surface of the side plate of the drawer, and a trochanter is provided on the vertically movable rod that contacts each of the guide pieces in each drawer, and the trochanter is inserted between the guide piece and the trochanter. The vertically movable lever is configured to rise in conjunction with the movement of any drawer in the drawer, and the vertically movable lever engages with each of the stoppers of the murder drawer in the stored state when the vertically movable lever moves upwardly. an engaging protrusion that prevents the drawer from moving when the drawer is pulled out; and an engaging protrusion protrudes from the inner surface of the cabinet main body at a position near the vertically movable lever that engages to hold the vertically movable lever in the raised position and is interlocked with the push-in of the drawer. A multi-stage drawer cabinet comprising a horizontal movable latch which is slidably supported in a substantially horizontal direction and which is biased in the direction of the vertical movable rod.