JPH0670636U - Lift assist device - Google Patents

Abstract

(57) [Summary] [Purpose] Regarding a lifting / lowering auxiliary device for lifting / lowering shelves that can be supported at a height position where it does not get in the way when not in use, and can be used by pulling it down to a low position when necessary, the lowering of the lifting / lowering shelves is prescribed. It is an object of the present invention to provide a lifting assistance device for lifting racks that reliably stops at a position and has excellent operability. [Composition] A pair of left and right first and second links, and the tip is first
An auxiliary link projecting from the link, an elevating side mounting member, a slide member which is vertically movably held by the elevating side mounting member and whose upper end is pivotally connected to the tip of the auxiliary link via a connecting link, and an elevating side mounting member. The operating member is rotatably attached to the lower end of the first link, and the first link is lifted and the gas sprinkle is arranged between the fixed side pivot of the second link. When this is done, a locking piece for locking the operating member is formed, and when the lifting bracket is raised up to the operating member, an engaging notch that engages with the fixed side pivot of the second link is formed, and the tip of the auxiliary link is formed. The part abuts on the upper end of the elevating-side mounting member to prevent downward movement of the elevating bracket.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an elevating / lowering assist device for an elevating shelf that can be supported at a height position where it does not get in the way when not in use and can be lowered to a lower position when necessary.

[0002]

[Prior art]

 In a conventional lifting assisting device, an operating frame is pivotally attached to a fixed side bracket through a pivot so as to be rotatable in the vertical direction, and the raising and lowering bracket is pivotally attached to the operating frame via the pivot to move the operating frame. The fixed side bracket and the elevating side bracket are connected to each other by an auxiliary frame via pivots so that the pivot of the auxiliary frame is located above and below the pivot of the actuating frame when the actuating frame is in the horizontal position. None, and further, the operating shaft is made up of three constituent members arranged side by side, the central constituent member is projected toward the up and down side with respect to the pivot of the lifting bracket, and is locked with a connecting rod between the projecting end and the lifting bracket. A gas spring with a mechanism is attached, and this gas spring is operated by the lock operation lever provided on the lifting bracket. (For example, Japanese Utility Model Publication No. 2-35222)

That is, according to the above-mentioned configuration, since the stop function at the time of the descent stop is performed by the gas spring, the descent of the elevating bracket does not stop unless the lock operation lever is released. In other words, when the weight of a storage item such as a closet is large, it descends abruptly, so there is no room to stop it, and it is very dangerous to collide with the user.

Also, the repulsive force of the gas spring works sufficiently when the connecting rod and the gas spring are in a straight line state, but as the lifting bracket rises and the connecting rod becomes inclined, the repulsive force of the lifting spring acts as the lifting force of the lifting bracket. There was a problem that it did not work well.

[0005]

[Problems to be Solved by the Present Invention] The present invention aims to solve the above problems. That is, it is an object of the present invention to provide a lifting assisting device which is excellent in operability and which surely stops at a predetermined position even when the hanging rack or the like is lowered without releasing the lock operation lever.

[0006]

[Means for solving the problem]

 A pair of left and right first and second links, an auxiliary link whose tip projects from the first link, and an up-and-down side attachment member and an up-and-down side attachment member that are vertically movably held, and an upper end of the auxiliary link through a connecting link. A slide member pivotally connected to the lifting and lowering side mounting member, and an operating unit rotatably attached to the lower end of the lifting and lowering side mounting member. A spring is provided, and a locking piece is formed on the slide member that locks the operating member when the lifting bracket is lowered the most. When the lifting bracket is raised most on the operating member, the fixed side of the second link is fixed. An engaging notch that engages with the pivot is formed, and the tip of the auxiliary link comes into contact with the upper end of the elevating side attachment member to serve as a lower stopper for the elevating bracket.

[0007]

[Action]

 According to the above configuration, when the lifting bracket is lowered the most, the tip of the auxiliary link comes into contact with the upper end of the lifting-side mounting member, so that further lifting of the lifting bracket is stopped, and at the same time the locking piece is operated. Since the member is locked, the lifting bracket is also prevented from rising, and the lifting bracket is fixed at a predetermined height.

[0008]

【Example】

 Embodiments will be described below with reference to the drawings. Reference numeral 1 represents a fixed side bracket, reference numeral 2 represents a lifting side bracket, reference numerals 3 and 3 represent a first link, reference numerals 4 and 4 represent a second link, reference numeral 5 represents an auxiliary link, and reference numeral Reference numeral 6 denotes an elevating side attachment member, reference numeral 7 denotes a slide member, and reference numeral 8 denotes an operation member.

The fixed bracket 1 includes a mounting board 11 fixed to the wall surface 10 with mounting screws, left and right side pieces 12 and 12 projecting forward from both ends of the mounting board 11 in the left-right direction, and the mounting board 11 It has fixed-side shaft mounting seats 13, 13 having a U-shaped cross section and fixed to the inner surface of the shaft at a predetermined interval in the left-right direction and having a wide lower portion. Reference numerals 14 ... Depict mounting holes formed on the mounting shaft 11 for wall surface mounting. Although the mounting holes 14 ... Are formed in the mounting substrate 11 in the embodiment, an L-shaped mounting bracket may be fixed to the left and right side pieces 12, 12 to form the mounting holes. .

The elevating side bracket 2 includes a connecting board 21 to which a storage cabinet or the like is connected, left and right side walls 22 and 22 projecting to the wall surface side from both ends of the connecting board 21 in the left-right direction, and an inner surface of the connecting board 21. And has vertically elevating side shaft mounting seats 23, 23 opposed to the fixed side shaft mounting seats 13, 13 fixed at a predetermined interval in the left-right direction. In connection with the lifting bracket 2 and the cabinet or the like, the back plate of the cabinet and the connecting board may be directly connected, or the upper and lower ends of the connecting board 21 may be bent forward in an L-shape to form a connecting protrusion. You may make it form a piece.

The first links 3 and 3 have the same shape, and the fixed-side shaft mounting seats 13 and 13 are fixed to the fixed-side bracket 1 and the lifting-side bracket 2 by the fixed-side pivot 31 and the lifting-side pivot 32. It is rotatably held by the left and right side pieces 12, 12, the lifting side shaft mounting seats 23, 23, and the left and right side walls 22, 22. At this time, the fixed-side pivot 31 is disposed on the side of the mounting substrate 11, and the elevating-side pivot 32 is disposed on the end of the left and right side walls 22 opposite to the connecting substrate 21.

The second links 4 and 4 have the same shape as the first links 3 and 3, and are fixed by the fixed side pivot shaft 41 and the lifting side pivot shaft 42 on the left and right end sides of the fixed side bracket 1 and the up and down side bracket 2. It is rotatably held by the side shaft mounting seats 13, 13, the left and right side pieces 12, 12, the elevating side shaft mounting seats 23, 23, and the left and right side walls 22, 22. At this time, the fixed-side pivot 41 is disposed on the end side opposite to the mounting substrate 11, and the elevating-side pivot 42 is disposed on the connecting substrate 21 side.

The auxiliary link 5 is provided in parallel between the first links 3 and 3, and has a protruding end portion 51 projecting from the first links 3 and 3 on the elevation side bracket 1 side. Similar to the first links 3 and 3, the pivot 32 is rotatably connected to the fixed-side bracket 1 and the elevating-side bracket 2. Reference numerals 52 and 52 denote first and second connecting plates that integrally connect the first links 3 and 3 and the auxiliary link 5 to form one frame.

An auxiliary spring mounting seat 53 is formed on the second connecting plate 52 located at the end of the lifting bracket 2 to project toward the second links 4 and 4 across the auxiliary link 5. There is.

The ascending / descending side mounting member 6 is fixed to the vertically elongate side bracket 2 by projecting downward at the center of the connecting board 21 in the left-right direction. That is, the ascending / descending side attachment member 6 has a vertically elongated box shape in which the fixed bracket 1 side is opened from the base plate 60 and the upper and lower left and right projecting pieces 61, 62, 63, 63 that are continuously provided on the peripheral edge of the base plate 60. Slide protrusion inner holes 64, which are vertically long holes, and spring strength adjusting holes 65 are formed at the upper and lower ends of the protrusions 63, 63.

A holding member 66 of the slide member 7 having an upper portion and a predetermined gap with the substrate 60 is attached to the inner surface of the lower end portion of the substrate 60. Reference numeral 67 indicates an operating spring mounting seat connected between the left and right protrusions 63, 63.

As shown in FIG. 4, the slide member 7 has upper and lower end portions formed with upper and lower guide protrusions 71, 71 having a width slightly smaller than that between the left and right protrusions 63, 63 of the elevating side mounting member 6. The slide board 72 and left and right slide side walls 73, 73, which are connected to the left and right ends of the slide board 72 and project toward the fixed bracket 1, are formed in a substantially U-shaped cross section.

A shaft mounting hole 731 is formed in the upper ends of the left and right slide side walls 73, 73, and a locking notch 732 is formed in the lower ends of the left and right slide side walls 73, 73. A locking piece 74 having a substantially L-shaped cross section, which is located at the lower end of the locking cutout 732 and is inclined obliquely upward to the slide substrate 72 and the left and right slide side walls 73, 73, is fixed.

The operation member 8 includes left and right protrusions 63, 63 of the elevating side attachment member 6, left and right upward protrusions 81, 81 located between the slide side walls 73, 73 of the slide member 7, and left and right upward protrusions 81, Reference numeral 81 is composed of a substrate 82 connected to the left and right ends, and an operation piece 83 protruding downward from the center of the substrate 82.

The left and right upward protruding pieces 81, 81 are L-shaped in a side view, and the end side of the sliding member 72 side of the slide member 7 which is slightly lower end is rotatably attached to the elevating side mounting member 6 by means of a pivot 811. They are connected to each other, a stopper rod 80 is provided between the upper ends thereof, an unsprung operation mounting seat 821 is formed so as to project upward in the central portion of the substrate 82, and a tension spring 820 is provided between the operating spring upper and lower mounting seats 67 and 821. The operation member 8 is always urged by a turning force in a direction in which the stopper rod 80 is locked to the locking piece 74.

Reference numeral 812 indicates an engagement notch that engages with the fixed-side pivot 41 of the second link 4 when the elevating bracket 2 is most raised.

In the slide member 7, the lower end portion of the slide base plate 72 is fitted between the base plate 60 of the elevating side mounting member 6 and the holding member 66, and the upper end portion is the protruding end part of the auxiliary link 5 via the connecting link 9. It is connected to 51. That is, one end of the connecting link 9 is pivotally connected to the side of the projecting end 51 of the auxiliary link 5 by the shaft 90, and the other end is attached to the left and right slide side walls 73, 73, the shaft mounting holes 731, 731 and the lifting side mounting. A shaft 70 into which the slide guide hole 64 of the member 6 is inserted is pivotally connected to the slide member 7 and the elevating side mounting member 6 so as to be vertically movable.

One end of each of the gas springs 95, 95 is pivotally connected to the fixed-side pivot 41 of the second link 4 and the other end is pivotally connected to the elevating-side pivot 32 of the first link 3. One end of each of the auxiliary springs 96 and 96 is connected to the auxiliary spring mounting seat 53, and the other end thereof is connected to the spring strength adjusting rod 98 via the connecting plates 97 and 97.

That is, the spring-strength adjusting rod 98 is inserted into the spring-strength adjusting hole 65 of the lifting-side mounting member 6 and protrudes outward from the left and right protrusions 63, 63 of the lifting-side mounting member 6. It is pivotally connected to the connecting plates 97, 97, and an adjusting screw 99 is vertically inserted in the central portion. The screw head of the adjusting screw 99 is in contact with the lower surface of the elevating side mounting member 6 and the lower projecting piece 62, and the spring strength adjusting rod 98 is moved up and down by the rotation of the screw head to raise the tension of the auxiliary springs 96, 96. Adjust.

The present invention is configured as described above, and the auxiliary link 5 is in the state where the lifting bracket 2, that is, the storage cabinet (not shown) connected to the lifting bracket 2 is most lowered (FIG. 2). The lower surface of the projecting end portion 51 comes into contact with the upper surface of the upper projecting piece 61 of the ascending / descending side mounting member 6, and further lowering is prevented.

At the same time, the connecting link 9 rotatably connected to the auxiliary link 5 causes the slide member 7 to slide downward by the slide guide hole 64 of the elevating side mounting member 6.

That is, the stopper rod 80 of the operating member 8 temporarily moves toward the fixed bracket 1 by the lowering of the locking piece 74, but when the tip of the locking piece 74 is located below the stopper rod 80, it is pulled. It returns by the tension of the spring 820 and is located on the upper surface of the locking piece 74. As a result, the slide member 7 is prevented from rising, and the elevating side bracket 2 is kept in the most lowered state.

Next, when raising the elevating side bracket 2, the handle facing the front side of the storage cabinet is operated to pull the wire rope 100 toward the front side to rotate the operation member 8, and the stopper rod. Move 80 toward the fixed bracket 1.

Then, the slide member 7 becomes slidable, the gas spring 95 and the auxiliary springs 96, 96 cause the first links 3, 3 to rotate upward, and the lifting side attachment member 6 causes the first link 3, 3. 3, the lifting bracket 2 (storage cabinet) is raised, and in the most raised state, the engagement notch 812 of the operating member 8 is engaged with the fixed pivot 14 and the lifting bracket 2 is lowered. Is blocked.

Next, when lowering the elevating side bracket 2, as described above, the handle is operated to disengage the engagement notch 812 and the fixed side pivot 14 and pull down the storage cabinet. Good.

Reference numeral 990 indicates a buffer spring. The buffer spring 990 has a light load inside the storage cabinet, and when the locking piece 74 and the stopper rod 80 are disengaged by the operation of the operating member 8, the gas spring 95 and the auxiliary spring 96 cause the lifting bracket 2 to move rapidly. It is attached to the lifting side pivot 32 in order to prevent it from rising and colliding with the wall surface 10. That is, when the elevating-side bracket 2 is most raised, one end contacts the second connecting plate 52 and the other end abuts on the connecting board 21 of the elevating-side bracket 2 to mitigate a sudden rise of the elevating-side bracket 2.

[0032]

[Effect of device]

 As described above, according to the present invention, the auxiliary link is provided between the first links, and the tip of the auxiliary link is made to project from the tip of the first link to form a projecting end portion. Since the upper end of the side mounting member is located slightly below the elevating side pivot of the first link, lower the elevating side bracket so that when the auxiliary link is in the horizontal state, the projecting protrusion is on the upper end of the elevating mounting member. Since they come into contact with each other, the lifting bracket (storage cabinet) does not lower unexpectedly, which is very safe. Also, since the slide member is held by the lifting-side mounting member so as to be vertically movable, the slide member is connected to the auxiliary link via the connecting link, and the locking member is provided on the slide member, the operation made on the lifting member is performed. It is very safe because it engages with the member and the lifting bracket does not unexpectedly rise from the lowered state. Further, since the gas spring is directly disposed between the lifting-side pivot of the first link and the fixed-side pivot of the second link, the load efficiency of the gas spring on the ring is good.

[0033]

[Brief description of drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a longitudinal sectional view of a main part in the state of FIG.

FIG. 3 is a vertical cross-sectional view of a main part in a state where a lifting bracket is raised most.

FIG. 4 is a perspective view of a slide member.

[Explanation of symbols]

 1 ── Fixed side bracket 2 ── Lifting side bracket 3 ── First link 32 ── Lifting side pivot 4 ── Second link 41 ── Fixed side pivot 5 ── Auxiliary link 51 ── Projecting end 6 ── Lifting side mounting member 7 ──Sliding member 74 ──Locking piece 8 ──Operating member 812 ──Engagement notch 9 ──Connecting link 95 ──Gas spring

Claims (1)

[Scope of utility model registration request] 1. A lower end is pivotally connected to a fixed bracket through a fixed pivot, and an upper end is pivotally connected to a lift bracket through the lift pivot, and the positions are shifted in the front-rear and vertical directions to be parallel to each other. A pair of left and right first and second links provided, and a protruding end that is attached between the left and right first links by a fixed-side pivot and a lifting-side pivot of the first link, and has a tip protruding from the tip of the first link. Between the auxiliary link having a portion and the second link of the elevating side bracket, protruding below the elevating side bracket, and having an upper end located slightly below the elevating side pivot of the first link; The slide member is vertically held by the side mounting member and has an upper end pivotally connected to the tip of the auxiliary link via a connecting link, and an operating member rotatably attached to the lower end of the elevating side mounting member. , The first phosphorus A gas spring is arranged between the elevating side pivot of the hook and the fixed side pivot of the second link, and a locking piece is formed on the slide member for engaging the operating member when the elevating side bracket is most lowered. When the lifting bracket is raised most, an engaging notch is formed which engages with the fixed side pivot of the second link, and when the lifting bracket is lowered most,
An elevating / lowering assisting device, wherein a protruding end of the auxiliary link abuts an upper end of an elevating / lowering side mounting member to prevent the elevating / lowering bracket from being lowered.