JP6872247B2 - Lifting shelf device - Google Patents

Description

The present invention relates to an elevating shelf device.

Conventionally, a shelf member for placing a stored object and a front-opening housing having a shelf storage chamber for storing the shelf member are provided, and a base end side of a parallel link mechanism is provided on a side wall of the housing. (For example, an elevating shelf device configured to pivotally attach the tip side of the parallel link mechanism to the shelf member and move up and down between the upper shelf storage state and the shelf descent completed state (for example). , Patent Document 1).

Japanese Unexamined Patent Publication No. 10-286131

However, in the conventional elevating shelf device, when the shelf member is lowered or swung, the shelf descent completion position is maintained while the momentum is gained by the operating force from the user acting on the shelf member or its own weight. Because it suddenly stops at the shelf storage position, there is a problem that impact noise is generated and it is noisy, and there is a problem that the shelf members may be impacted and the stored items such as tableware and bottles may fall over and be damaged. there were. In addition, a load is applied to the shelf member and the parallel link mechanism, which causes a decrease in durability.

Therefore, the present invention can prevent an impact sound or an impact from being generated when the shelf member is moved up and down, is excellent in quietness and durability, and can be safely raised and lowered between the shelf stored state and the shelf descent completed state. The purpose is to provide an elevating shelf device.

The elevating shelf device of the present invention is an elevating shelf device configured such that a shelf member for placing a stored object moves up and down between an upper shelf storage state and a shelf descent completed state via a link mechanism. A damper that does not exert a deceleration action in one of the extension operation and the shortening operation and exerts a deceleration action in the other operation is provided, and the damper includes a predetermined portion of the link mechanism and a predetermined fixing portion. It is provided directly or indirectly between the above, and is provided so that the expansion / contraction operation is switched between the shelf storage state and the shelf descent completion state in a predetermined swinging state, and the shelf storage state is changed to the above. When swinging to the shelf descent completed state, the swing speed of the shelf member is reduced in the range from the predetermined swinging intermediate state to the shelf descent completed state, and the shelf descent completed state is changed to the shelf storage state. When swinging, the swing speed of the shelf member is reduced in the range from the predetermined swinging state to the shelf storage state, and the link mechanism is a parallel link mechanism, and the link mechanism is a parallel link mechanism. The predetermined portion is an extension portion of one of the first link member and the second link member constituting the parallel link mechanism, which extends beyond the pivotal landing point with the predetermined fixing portion, and is a damper. Is fixed to the predetermined fixing portion on the fixed end side, and the telescopic free end side is pivotally connected to the other end of the connecting link member whose one end is pivotally connected to the extending portion, and the connecting link member and the extending The first pivotal point with the portion is arcuate so as to pass through a dead point on a virtual straight line connecting the second pivotal connection point between the connecting link member and the damper and the proximal end pivoting point. It is configured so that the expansion and contraction operation of the damper is switched at the dead point by reciprocating to.

Also, the damper is disposed only in the predetermined fixing portion of one of left and right sides.

According to the present invention, when the shelf member is lowered to be pulled out, the shelf member can be quickly pulled out from the shelf storage state to the predetermined swinging halfway state, and the shelf descent completed state from the predetermined swinging halfway state. The swing speed can be reduced until, and the shelf member does not stop suddenly (no impact noise is generated), and the shelf descent can be completed quietly and safely. Further, when the shelf member is raised to store the shelf member, the shelf member can be swiftly swung from the shelf descent completed state to the predetermined swinging state, and the shelf member can be swung from the predetermined swinging state to the shelf storage state. Up to, the swing speed can be reduced, and the shelves can be stored quietly and safely without generating impact noise or impact on each component. It is not necessary to provide multiple types of dampers, the structure can be simplified, and it can be easily manufactured. Durability can be improved by preventing problems such as breakdowns because the load due to impact is not applied to the shelf members and the link mechanism.

An embodiment of the present invention is shown, and is a cross-sectional side view of a main part in a shelf stored state. It is a cross-sectional side view of a main part which shows the state in the middle of swinging in an upper position. It is a cross-sectional side view of the main part which shows the predetermined swinging state. It is a cross-sectional side view of a main part which shows the state in the middle of swinging in a lower position. It is sectional drawing side view of the main part which shows the shelf descent completion state. It is an enlarged view of the main part in a shelf storage state. It is an operation explanatory diagram. It is an operation explanatory diagram. It is an operation explanatory diagram. It is a simplified block diagram which shows an example of a damper.

Hereinafter, the present invention will be described in detail based on the illustrated embodiments.
As shown in FIGS. 1 to 5, the elevating shelf device according to the present invention has a front opening shape having a shelf member 1 for placing stored items and a shelf storage chamber 60 for accommodating the shelf member 1. 6 and a link mechanism 2 in which the tip end portion is pivotally attached to the side wall portion 11 of the shelf member 1 and the base end portion is pivotally attached to the predetermined fixing portion 61, and the shelf member 1 is placed in a predetermined storage position. The upper shelf storage state X (see FIG. 1) arranged in (inside the shelf storage chamber 60) and the shelf descent completion state Z (see FIG. 5) pulled out from the predetermined storage position to the predetermined lower descent completion position. And, it is configured to be able to move up and down.

The shelf member 1 has a pair of left and right side wall portions 11, 11 and a mounting portion on which stored items such as tableware and food storage bottles are placed.
The housing 6 is fixed to a fixed portion such as a wall surface or a pillar located above a sink or a countertop (not shown). It is desirable that the housing 6 is provided with a door that closes the front opening. The housing 6 is not limited to a box shape but may have a frame shape.

In the illustrated embodiment, the predetermined fixing portion 61 is a base member fixed to the side wall portion of the housing 6. The base member may be arranged so as to face each other on the left and right outer surfaces of the shelf member 1 in the shelf storage state X. For example, the base member may be vertically installed from the ceiling wall portion of the housing body 6, or the housing body 6 may be provided. As a frame body, base members can be provided in a bridge shape on the front frame portion and the rear frame portion.

Further, the predetermined fixing portion 61 is not limited to the base member provided on the housing 6, and may be a fixed portion that is arranged face-to-face on the left and right outer surfaces of the shelf member 1 in the shelf storage state X. For example, the predetermined fixing portion 61 is a base member fixed to a fixed portion such as a wall surface or a pillar located above a sink or a countertop (not shown), a side wall portion of the housing 6, the fixed portion itself such as the wall surface or the pillar, or the like. Alternatively, it may be a combination thereof.

The link mechanism 2 includes a first link member 21 and a second link member 22. The tip portion 21a of the first link member 21 and the tip portion 22a of the second link member 22 each have a left-right horizontal pivot center on the upper part of the outer surface of the side wall portion 11 of the shelf member 1 (via the mounting bracket 23). It is pivotally attached. The base end portion 21b of the first link member 21 and the base end portion 22b of the second link member 22 are pivotally attached to a predetermined fixing portion 61 with left and right horizontal pivot axes, respectively.

From the side view, the pivot point (first tip pivot point) P1 of the first link member 21 and the shelf member 1, and the pivot point (first base end pivot) of the first link member 21 and the predetermined fixing portion 61. Landing point) P2, pivotal landing point of second link member 22 and shelf member 1 (second tip pivotal landing point) P3, pivotal landing point of second link member 22 and predetermined fixing portion 61 (second base) The end pivot point) P4 is arranged at the apex position of the parallelogram in the side view. That is, the link mechanism 2 is a parallel link mechanism.
Further, in the shelf storage state X (see FIG. 1), the link element straight line J indicated by the alternate long and short dash line connecting the first tip end pivot point P1 and the first proximal end pivot point P2 is tilted backward and upward.

Then, as shown in FIGS. 1 to 6, a damper 8 is interposed between the predetermined portion 21c of the link mechanism 2 and the predetermined fixing portion 61.
The damper (buffer) 8 does not exert a deceleration action in the extension operation and exerts a deceleration action in the shortening operation. As shown in FIG. 10, the damper 8 is, for example, a hydraulic type having a throttle portion (orifice portion) 88 through which hydraulic oil flows and a check valve portion (check valve portion) 89 in a parallel circuit. Although not shown, the damper 8 is free to use a pneumatic type or an elastic member type such as a spring or rubber.

In FIG. 6, the predetermined portion 21c of the link mechanism 2 is an extension portion 21c extending beyond the proximal end pivot point P2 in the first link member 21.
Then, the extension portion 21c of the first link member 21 and the damper 8 are interlocked and connected via the connecting link member 7. One end portion 7a of the connecting link member 7 is pivotally connected to the extending portion 21c with a left-right horizontal axis. In the damper 8, the fixed end side 8a is fixed (fixed) to the predetermined fixing portion 61, and the telescopic free end side 8b is pivotally connected to the other end portion 7b of the connecting link member 7 with left and right horizontal axes.

Further, a linear guide means (straight reciprocating moving means) 80 is connected to the telescopic free end side 8b of the damper 8. The linear guide means 80 includes a slider member 81 fixed to the telescopic free end side 8b, and a linear guide portion (guide recessed groove) 82 provided in a predetermined fixing portion 61 to guide the slider member 81. When the damper 8 receives the expansion / contraction operating force from the connecting link member 7 by the linear guide means 80 (without receiving a force orthogonal to the damper axis), the damper 8 expands / contracts smoothly without being twisted. In other words, it can be said that the connecting link member 7 and the linear guide means 80 extract the linear reciprocating kinetic force from the elevating and oscillating force of the link mechanism 2 to apply the telescopic operating force to the damper 8.

Next, the configuration of the elevating shelf device of the present invention will be described together with the usage (action).
As shown in FIGS. 1 and 6, in the shelf storage state X, the shelf member 1 is arranged at a predetermined storage position in the shelf storage chamber 60. Further, the rearward swing of the shelf member 1 (link mechanism 2) that exceeds the predetermined storage position is prevented by the stopper portion 66 (see FIG. 6) that abuts on the trailing edge portion of the first link member 21.

When the user applies an operating force for pulling the shelf member 1 forward from the shelf storage state X, the shelf member 1 swings forward as shown in FIG. Then, as shown in FIG. 3, the shelf member 1 (link element straight line J) swings forward from the shelf storage state X by the first swing angle θ1, becomes a predetermined swinging intermediate state Y, and further descends and swings. Then, as shown in FIG. 5, the shelf member 1 is in the descent complete state in which the shelf member 1 is stopped at the predetermined descent complete position through the state of FIG. 4 (the swinging state in the lower position).

Then, when the user applies an operating force to push up the shelf member 1 from the shelf descent completed state of FIG. 5, the shelf member 1 swings upward as shown in FIG. Then, as shown in FIG. 3, the shelf member 1 (link element straight line J) swings upward by the second swing angle θ2 from the shelf descent complete state Z, and becomes a predetermined swinging intermediate state Y, and further rises and swings. By moving, the state of FIG. 2 (the state in the middle of swinging at the upper position) is changed to the shelf storage state X of FIG.

That is, as shown in FIG. 7, the first link member 21 passes through a predetermined swinging state Y from the shelf storage state X in the order of arrow A, arrow B, arrow C, and arrow D, and is in the shelf descent complete state. It becomes Z, and it passes from the shelf descent completion state Z to the predetermined swinging state Y and becomes the shelf storage state X.

Therefore, when the first link member 21 swings up and down (when swinging as shown by arrows A, B, C, and D), as shown in FIG. 8, the first pivot point Pa (extension). The portion 21c and one end portion 7a) of the connecting link member 7 are configured to move in the order of arrow A', arrow B', arrow C', and arrow D'. That is, the first pivot point Pa is configured to reciprocate in a downwardly convex arcuate locus.

Further, the first pivot point Pa is a dead point Pd on a virtual straight line connecting the first proximal pivot point P2 and the second pivotal junction Pb (in other words, the first proximal pivotal landing point P2 and the first). A state in which the first connecting element straight line S1 indicated by the alternate long and short dash line connecting the 1 pivotal connection Pa and the second connecting element straight line S2 indicated by the alternate long and short dash line connecting the first pivotal connection Pa and the second pivotal connection point Pb form a straight line. ) Is configured to pass through.
Moreover, the first pivot point Pa is configured to coincide with the dead point Pd in the predetermined swinging state Y.

In FIG. 8, in the shelf storage state X, the first connecting element straight line S1 and the second connecting element straight line S2 form a “dogleg” -shaped element line bent forward. The other end 7b of the connecting link member 7 is arranged at the first upper position (first top dead center).
Then, in the predetermined swinging state Y, the first pivot point Pa is arranged on the dead point Pd, and the first connecting element straight line S1 and the second connecting element straight line S2 form a linear element line. .. The other end 7b of the connecting link member 7 is at the lowest position (bottom dead center).
Further, in the shelf descent completion state Z, the first pivot point Pa is arranged on the rear side and is bent backward at the first connecting element straight line S1 and the second connecting element straight line S2. It forms an element line like "". The other end 7b of the connecting link member 7 is at the second upper position (second top dead center).

In FIGS. 8 and 9, in the shelf storage state X, the damper 8 is in the first shortened state (first length dimension Lx). In the predetermined swinging state Y, the damper 8 is in the most extended state (in the state of being connected to the connecting link member 7). In the shelf descent completion state Z, the damper 8 is in the second shortened state (second length dimension Lz).

Therefore, when the shelf member 1 (first link member 21) swings from the shelf storage state X to the predetermined swinging state Y, the extension portion 21c swings backward to push down the connecting link member 7, and the damper 8 (See arrow A'in FIGS. 8 and 9). That is, the first pivot point Pa moves so as to approach the dead point Pd, and the damper 8 is extended to move from the first shortened state to the most extended state. That is, in the range from the shelf storage state X to the predetermined swinging intermediate state Y (lower swing swing first half range), the damper 8 is extended and does not exert a deceleration action (is a free state), and the desired swinging occurs. The shelf member 1 can be pulled out with a moving speed.

Then, when the shelf member 1 is swung from the predetermined swinging state Y to the shelf descent completed state Z, the extending portion 21c swings rearward and upward to pull up the connecting link member 7 and shorten the damper 8. (See arrow B'in FIGS. 8 and 9). That is, the expansion / contraction operation of the damper 8 is switched at the dead point Pd (the extension operation is switched to the shortening operation at the dead point Pd), the first pivot point Pa is moved away from the dead point Pd, and the damper 8 is moved. The shortening operation is performed, and the state changes from the most extended state to the second shortened state. Therefore, in the range from the predetermined swinging halfway state Y to the shelf descent completion state Z (descent swinging second half range), the damper 8 shortens and exerts a deceleration action, and the swinging speed of the shelf member 1 decelerates. And slowly descend to the designated shelf completion position.

Further, when the shelf descent completed state Z is oscillated to a predetermined oscillating halfway state Y, the extending portion 21c oscillates forward and downward to push down the connecting link member 7 and extend the damper 8. That is, the first pivot point Pa moves so as to approach the dead point Pd, and the damper 8 is extended to move from the second shortened state to the most extended state (see arrows C'in FIGS. 7 and 8). ). Therefore, in the range from the shelf descent completion state Z to the predetermined swinging midway state Y (rising swing first half range), the damper 8 is extended and does not exert a deceleration action (is a free state), which is desired. The shelf member 1 can be raised with a swing speed.

Then, when the swing is performed from the predetermined swing state Y to the shelf storage state X, the extension portion 21c swings forward to pull up the connecting link member 7 and shorten the damper 8. That is, the expansion / contraction operation of the damper 8 is switched at the dead point Pd, the extension operation is switched to the shortening operation at the dead point Pd, the first pivot point Pa is moved away from the dead point Pd, and the damper 8 is moved. The shortening operation is performed, and the state changes from the most extended state to the first shortened state. Therefore, in the range from the predetermined swinging state Y to the shelf storage state X (upward swinging latter half range), the damper 8 exerts a deceleration action, the swinging speed of the shelf member 1 is decelerated, and the swinging speed of the shelf member 1 is slowly determined. Swing to the shelf storage position.

That is, when the shelf member 1 is reciprocated (up and down and rocked) once so as to change from the shelf storage state X to the shelf descent complete state Z and from the shelf descent complete state Z to the shelf storage state X, the damper 8 Is configured to make two reciprocations (expansion and contraction movements) so that is changed from the shortened state to the shortened state via the extended state, and from the shortened state to the shortened state via the extended state.

Here, as shown in FIGS. 3 and 7, assuming that the vertical swing angle θ of the shelf member 1 (link mechanism 2) is 100%, the first and second swing angles θ1 and θ2 are set to 50%, respectively. However, as shown in FIG. 9, the first shortened state (first length dimension Lx) and the second shortened state (second length dimension Lz) are set to have the same length. The first swing angle θ1 and the second swing angle θ2 may be different from each other so that the first length dimension Lx and the second length dimension Lz are different. It should be noted that setting the first swing angle θ1 to 40% or more and 60% or less is convenient because both the entire ascending / descending speed and the shock absorption are balanced.

Further, in FIG. 6, the ascending load reducing means (ascending assisting means) 50 for reducing the operating force for ascending the shelf member 1 is provided.
The ascending load reducing means 50 applies a spring member 51 made of a spiral spring for elastically urging the link mechanism 2 in the upward swinging direction during the ascending / descending swing of the shelf member 1 and the elastic force from the spring member 51. The transmission swing member 52 that receives (directly) and the tip portion 52a can swing back and forth, and the base end portion 53b are pivotally attached to the tip portion 52a of the transmission swing member 52, and the tip portion 53a is the first. A transmission connecting member 53 pivotally attached to the extending portion 21c of the link member 21 is provided.

Further, as shown in FIG. 5, a locking means 3 for holding the shelf member 1 at a predetermined descent completion position is provided.
The locking means 3 comes into contact with the locking claw portion 31 provided on the extending portion 21c and the locking claw portion 31 when the shelf member 1 is arranged at the shelf descent completion position, and the shelf member 1 moves to the shelf completion position. The contact portion 32 that regulates the swing of the first link member 21 so as not to fall beyond it, and the return swing of the first link member 21 such that the shelf member 1 is raised by the elastic urging force of the spring member 51. It is provided with a claw piece portion 33 for preventing return (which prevents the spring member 51 from trying to separate from the contact portion 32 due to the elastic force of the spring member 51).

The claw piece portion 33 is arranged at a predetermined lock position in a free state (see FIG. 6), and forms an insertion space portion for the locking claw portion 31 between the claw piece portion 33 and the contact portion 32.
The claw piece portion 33 is provided so as to be elastically deformable so as to swing backward and escape when pressed backward by the locking claw portion 31 (see arrow K). That is, when the shelf member 1 descends, the locking claw portion 31 pushes the claw piece portion 33 rearward and releases the claw piece portion 33 rearward due to the swing of the first link member 21, and the locking claw portion 31 hits the contact portion. In contact with 32, the descent swing of the shelf member 1 is prevented, and further, the claw piece portion 33 returns to a predetermined lock position by the elastic restoring force, and the return of the locking claw portion 31 is prevented to prevent the spring member. The elastic force of 51 prevents the first link member 21 from returning to the ascending position and attempting to swing. Further, when the user tries to raise the shelf member 1 with a predetermined operating force, the tapered surface of the locking claw portion 31 presses the upper end tapered surface of the claw piece portion 33, and the locking claw portion 31 is pressed by the tapering action. The shelf member 1 is configured to be able to ascend and swing by elastically deforming it backward and allowing it to escape (so that the lock is released).
By providing the locking means 3 in this way, when the shelf member 1 is light such as in an empty state, it is possible to prevent the rising load reducing means 50 from swinging up and swinging, and the usability is improved.

Further, it is preferable that the link mechanism 2 is provided (provided in pairs on the left and right) on the predetermined fixing portions 61 and 61 on both the left and right sides so as to correspond to the left and right side wall portions 11 and 11 of the shelf member 1, respectively.
It is preferable that the damper 8 is arranged only on the left and right side of the predetermined fixing portion 61.
When the link mechanisms 2 are provided in pairs on the left and right, the dampers 8 may be provided in correspondence with the left and right link mechanisms 2 and 2 (provided in pairs on the left and right).

Further, as shown in the figure, the predetermined fixing portion 61 is used as a base member, and the stopper portion 66, the contact portion 32, the claw piece portion 33, and the straight guide portion 82 are integrally molded with resin on the base member to increase the number of parts and assemble. The number of man-hours is reduced and manufacturing is made more efficient. Further, the first proximal pivot point P2 is arranged behind and above the second proximal pivotal point P4, and the first proximal pivotal point P2 is located below the first proximal pivotal point P2. The pivot point Pa is arranged, the second pivot point Pb is arranged at a position below the first pivot point Pa, and the damper 8 and the straight guide portion 82 are arranged so as to be tilted backward and downward. Therefore, the space in the lower back corner of the shelf storage room 60 is effectively used.

It should be noted that the present invention uses a damper 8 having a structure in which the design can be changed, which exerts a deceleration action during the extension operation and does not exert a deceleration action during the shortening operation, and is in the middle of a predetermined swing. The damper 8 may be arranged so as to be in a shortened state in the state Y. Further, the predetermined portion 21c of the link mechanism 2 is not limited to the extension portion 21c as shown in the figure, but is a link mechanism 2 that reciprocates in an arcuate locus when the link mechanism 2 moves up and down. It may be a part. For example, the vicinity of the base end portion 22b of the second link member 22 may be a predetermined portion 21c. The stretched portion 21c may be provided on the second link member 22. Further, the connecting link member 7 may be omitted, and the damper 8 may be directly pivotally attached to the predetermined portion 21c of the link mechanism 2. The fixed end side 8a of the damper 8 is not limited to the barrel side as shown in the figure, but may be the rod side. In addition, the shape and number of base members are free.
In the present invention, the parallel link mechanism refers to a modified parallel link mechanism in which each pivot point P1, P2, P3, P4 is arranged at the apex position of a non-parallelogram rectangle in a side view. Including.

As described above, in the elevating shelf device of the present invention, the shelf member 1 for placing the stored items moves up and down between the upper shelf storage state X and the shelf descent completion state Z via the link mechanism 2. The elevating shelf device configured in the above is provided with a damper 8 that does not exert a deceleration action in one of the extension operation and the shortening operation and exerts a deceleration action in the other operation. A predetermined swinging state Y between the predetermined portion 21c of the link mechanism 2 and the predetermined fixing portion 61, which is directly or indirectly interposed, and between the shelf storage state X and the shelf descent completion state Z. When swinging from the shelf storage state X to the shelf descent completed state Z, the shelf is provided in a range from the predetermined swinging state Y to the shelf descent completed state Z. While decelerating the swing speed of the member 1, when swinging from the shelf descent complete state Z to the shelf storage state X, the shelf member is in the range from the predetermined swinging state Y to the shelf storage state X. Since it is configured to reduce the swing speed of 1, when the shelf member 1 is pulled out, the shelf member 1 can be quickly pulled out from the shelf storage state X to the predetermined swing intermediate state Y, and the shelf member 1 can be quickly pulled out and the shelf member 1 is shaken. The swing speed can be reduced from the moving state Y to the shelf descent completed state Z, and the shelf member 1 does not stop suddenly (no impact noise is generated), and the shelf descent completed state Z can be obtained quietly and safely. Further, when the shelf member 1 is raised and stored, the shelf member can be swiftly swung from the shelf descent completion state Z to the predetermined rocking intermediate state Y, and from the predetermined rocking intermediate state Y. The swing speed can be reduced up to the shelf storage state X, and the shelf member 1 does not stop suddenly (no impact noise or impact on each component member is generated), and the shelf storage state can be quietly and safely. It is not necessary to provide multiple types of dampers, and it can be manufactured easily (at low cost). It is possible to prevent the stored items from tipping over or being damaged and improve safety. The overall ascending / descending speed does not slow down, making it easy to use. Both safety and convenience can be achieved. Durability can be improved by preventing problems such as breakdowns because the load due to impact is not applied to the shelf members and the link mechanism.

Further, the link mechanism 2 is a parallel link mechanism, and the predetermined portion 21c of the link mechanism 2 is a predetermined fixing portion in one of the first link member 21 and the second link member 22 constituting the parallel link mechanism. It is an extension portion 21c extending beyond the proximal end pivot point P2 with 61, and the damper 8 has a fixed end side 8a fixed to the predetermined fixing portion 61 and one end portion to the extension portion 21c. The telescopic free end side 8b is pivotally connected to the other end 7b of the connecting link member 7 to which the 7a is pivotally connected, and the first pivotal connection Pa between the connecting link member 7 and the extending portion 21c is the connecting link. The dead point Pd on the virtual straight line connecting the second pivot point Pb of the member 7 and the damper 8 and the proximal end pivot point P2 is reciprocated in an arc shape so as to pass through the dead point Pd. Since the expansion / contraction operation of the damper 8 is switched at the point Pd, the expansion / contraction operation of the damper 8 can be reliably switched with a simple mechanical configuration (without electrical control). The damper 8 can be smoothly expanded and contracted. The structure for expanding and contracting the damper 8 can be made thin and compact, and can be provided in a slight gap between the housing 6 and the shelf member 1 (space saving can be effectively used).

Further, since the damper 8 is arranged only on the predetermined fixing portion 61 on one of the left and right sides, the number of parts and the assembly man-hours can be reduced, and the manufacturing can be performed easily and quickly.

1 Shelf member 2 Link mechanism 7 Connecting link member 7a One end 7b The other end 8 Damper 8a Fixed end side 8b Telescopic free end side
21 1st link member
22 Second link member
21c Predetermined part (stretched part)
61 Predetermined fixed part P2 Base end pivot point Pa 1st pivot point Pb 2nd pivot point Pd Dead point X Shelf storage state Y Predetermined swinging state Z Shelf descent completed state

Claims (2)

An elevating shelf configured such that a shelf member (1) for placing stored items moves up and down between an upper shelf storage state (X) and a shelf descent completed state (Z) via a link mechanism (2). In the device
A damper (8) that does not exert a deceleration action in one of the extension operation and the shortening operation and exerts a deceleration action in the other operation is provided.
The damper (8) is directly or indirectly interposed between the predetermined portion (21c) of the link mechanism (2) and the predetermined fixing portion (61), and is in the shelf storage state (X). It is provided so that the expansion / contraction operation is switched in a predetermined swinging intermediate state (Y) during the shelf descent completion state (Z).
When swinging from the shelf storage state (X) to the shelf descent completed state (Z), the shelf member (1) ranges from the predetermined swinging intermediate state (Y) to the shelf descent completed state (Z). ) Is decelerated, and when swinging from the shelf descent complete state (Z) to the shelf storage state (X), the shelf storage state (X) is changed from the predetermined swinging state (Y). It is configured to reduce the swing speed of the shelf member (1) within the range up to .
The link mechanism (2) is a parallel link mechanism.
The predetermined portion (21c) of the link mechanism (2) is based on one of the first link member (21) and the second link member (22) constituting the parallel link mechanism with the predetermined fixing portion (61). It is an extension portion (21c) extending beyond the end pivot point (P2).
The damper (8) is a connecting link member (7) in which a fixed end side (8a) is fixed to the predetermined fixing portion (61) and one end portion (7a) is pivotally connected to the extending portion (21c). The telescopic free end side (8b) is pivotally connected to the other end (7b) of the
The first pivotal connection (Pa) between the connecting link member (7) and the extension (21c) is the second pivotal connection (Pb) between the connecting link member (7) and the damper (8). , The dead point (Pd) on the virtual straight line connecting the base end pivot point (P2) and the dead point (Pd) is reciprocated in an arc shape so as to pass through the dead point (Pd) of the damper (8). An elevating shelf device characterized in that it is configured so that the expansion and contraction operation can be switched. The elevating shelf device according to claim 1 , wherein the damper (8) is arranged only on the predetermined fixing portion (61) on one of the left and right sides.

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