TWI820907B - Elevation storing apparatus - Google Patents

Abstract

It is an object of the present invention to provide an elevation storing apparatus with which a goods storing shelf does not suddenly ascend when unloaded and in lowest drawn state. Closing force of an open-close door 20, pivoted to an upper side 15 of a forward-opening portion 1P of a box-shaped fixation portion 1, is given to an upper link 12 of a parallel link mechanism Z to restrict oscillation of the link mechanism Z in upward direction.

Description

Lifting storage device

The invention relates to a lifting and storage device.

The applicant has previously proposed a lifting and lowering storage device as shown in Figures 8 and 9 (see Patent Document 1). The lifting and storage device shown in Figures 8 and 9 has the following structure.

That is, it is provided with a front open box-shaped fixing part 51 and an article storage rack 52 for placing stored objects, and is provided with a parallel connection mechanism 53 to keep the article storage rack 52 horizontal at all times and to guide its elevation.

In addition, a door 56 is installed near the upper edge 55 of the front opening 54 of the box-shaped fixing part 51. The door 56 can be opened and closed arbitrarily as shown by arrows N ₁ and N ₂ through a complicated small connecting mechanism 57 . The upper end of the door switch upper pressure rod 60 is pivotally connected to an arm 58 of the small connecting mechanism 57 around the first pivot point P ₁ . The lower end 60A of the upper pressure rod 60 is pivotally connected to the upper connecting portion 61 (in the upper connecting portion 61 and the lower connecting portion 62 ) of the parallel connecting mechanism 53 around the second pivot point P ₂ .

Furthermore, from the folded state of the article storage rack in Figure 8 to the maximum pull-down state of the article storage rack being pulled most outward as shown in Figure 9, the parallel connection mechanism 53 actuates (changes), and the door 56 moves upward in conjunction with Open.

Patent Document 1 is Japanese Patent No. 5467776.

Although the lifting storage device shown in Figures 8 and 9 is an invention with many advantages, it still has the following problems. That is to say, when the lifting storage device is used for the first time, or when the object storage rack 52 does not store objects at all, it can be easily moved from the folded state in Figure 8 to the maximum pull-down state in Figure 9 The (unloaded) article storage rack 52 is pulled out (pulled down) with human hands.

However, when trying to store items into the unloaded item storage rack 52 with both hands, there is still a problem that the item storage rack 52 suddenly moves upward (rises). The inventors of the present invention focused on the point where the article storage rack 52 unexpectedly rises rapidly when the weight of the door 56 (its own weight W ₅₆ ) is large, as shown in FIG. 9 , and considered the following detailed description. invention.

Here, the lifting storage device of the present invention is provided with: a front opening-shaped box-shaped fixing part; an object storage rack for placing storage objects; a parallel connection mechanism for keeping the object storage rack horizontal at all times and guiding its lifting; The door is pivotally connected to the upper edge of the front opening of the box-shaped fixed part; and the upper pressure rod is used to open and close the door. The upper end is pivotally connected to the back of the door around the first pivot point, and the lower end is pivoted around the second pivot point. The contact point is pivotally connected to the upper connecting portion of the parallel connecting mechanism in any rotation. When the object storage rack is pulled out to the maximum pull-down state, the upper connecting portion is pivotally connected to the box-shaped fixing portion for the third time. The reference straight line connecting the pivot point and the first pivot point is set so that the second pivot point is located at the front and bottom when viewed from the side, so as to prevent the item storage rack in the unloaded state from suddenly moving due to the weight of the door. The power of movement from above.

In addition, the upper end of the upper pressure rod for opening and closing the door is provided with a rotating wheel. The rotating wheel can rotate arbitrarily around the horizontal axis. The accommodating member is fixed on the back of the door. The rotating wheel is inserted from one side and held in the accommodating member. . In addition, in the direction of the side where the rotating wheel is inserted into the accommodating member, small-width protruding pieces for preventing the rotating shaft from falling off are protrudingly provided at positions close to the back of the door and far away from the back of the door.

According to the present invention, the article storage rack in an unloaded state can be maintained without human hands. It can be maintained at the most pulled-out state. Therefore, people can safely and easily put in items while holding the stored items with both hands. Even women or people with weak health can put in stored items smoothly.

[Invention]

1: Fixed part

1P: Front opening

4: Inner surface of side wall

6:Abutment

10: Item storage rack

11: Lower connection part

12: Upper connection part

15: Top

16: Pivot joint

18: Upper pressure rod

18A: Upper end

18B:lower end

20:door

25: rotating wheel

26: Accommodation piece

27:hole

28: Installation part

29:Storage space

30:Maintenance Department

31: Close the wall

32,33: Small width protruding piece

F ₁₈ : vector

H: vertical size

L ₀ : reference straight line

L ₂₅ : Horizontal axis

M ₁₂ : Torque

M ₂₀ : Torque

O ₁₁ , O ₁₂ , O ₂₁ , O ₂₂ : axis

P ₁ : first pivot point

P ₂ : Second pivot point

P ₃ : The third pivot point

R ₃ : arm length

S ₁ : One side direction

W ₂₀ : own weight

W ₂₉ : Horizontal size

Z: Parallel connection mechanism

△H: Gap

D:Outer diameter size

[common usage]

51: Box type fixed part

52: Item storage rack

53: Parallel connection mechanism

54:Front opening

55: Top

56:door

57:Small connecting mechanism

58:Arm

60: Upper pressure rod

60A: lower end

61: Upper connection part

62: Lower connection part

64: buckle clip

F ₆₀ : vector

M ₅₃ : Torque

M ₅₆ : Torque

N ₁ , N ₂ : arrow

R ₄ : arm length

W ₅₆ : own weight

[Figure 1] A cross-sectional side view of one embodiment of the present invention showing the storage state of the article storage rack and showing the closed state of the door.

[Picture 2] A cross-sectional side view showing the maximum pull-down state of the storage rack.

[Picture 3] A vector line diagram showing the magnitude and direction of the vector and torque in the maximum pull-down state in Figure 2.

[Picture 4] An enlarged view of the IV-IV cross section of Figure 3.

[Figure 5] shows an example of the container. (A) is a perspective view viewed from one direction below, and (B) is a perspective view viewed from another direction below after being rotated 180 degrees.

[Picture 6] VI-VI cross-section of Figure 4.

[Picture 7] Side view.

[Fig. 8] shows a cross-sectional side view of the conventional example in a stored state.

[Fig. 9] shows a cross-sectional side view of the conventional example in the completed pull-out state (maximum pull-down state).

[Figure 10] shows the vector line diagram of the magnitude and direction of the vector and torque in the maximum pull-down state in Figure 9.

The present invention will be described in detail below based on the embodiments of the drawings. In Figures 1 to 3, one embodiment of the present invention is shown. 1 is a box-shaped fixing part with a front opening, which is fixed to Walls, etc. omitted from the drawing. The box-shaped fixed part 1 may also be called a cabinet.

10 is an item storage rack, which can hold (storage) various storage items. And it is equipped with a parallel connection mechanism Z, which guides the lifting and lowering of the object storage rack 10 while maintaining it in a horizontal position at all times. That is, as shown in FIG. 2 , this parallel connection mechanism Z has an upper connection part 12 and a lower connection part 11 . In the description of the present invention, in the maximum pulled-down state of the article storage rack in Figure 2, the connection parts located "upper" and "lower" are respectively called "upper connection part 12" and "lower connection part 11".

In addition, more specifically, the base of the lower connecting portion 11 of the parallel connecting mechanism Z can swing around the axis O ₁₁ and is pivotally connected to the base 6. The base 6 is fixed to the inner surfaces 4 of the left and right side walls of the fixed portion 1 . In addition, the base end of the upper connecting portion 12 of the parallel connecting mechanism Z can swing around another axis O ₁₂ and is pivotally connected to the base 6 .

In addition, the lower connecting part 11 and the upper connecting part 12 are respectively pivotally connected to the article storage rack 10, the top end of the lower connecting part 11 can swing around the axis O ₂₁ , and the top end of the upper connecting part 12 can swing around the axis O ₂₂ , and , the door 20 is pivotally connected and supported on the upper edge (upper end edge) 15 of the front opening 1P of the above-mentioned box-shaped fixed part 1 through the pivot member 16 so that it can be opened and closed in any swing manner. In addition, the pivot member 16 is preferably a sliding type pivot member (known as a conventional sliding type pivot member) that can not only be pivoted to swing arbitrarily, but also can move forward and backward with only a small size.

And, 18 is the upper pressure rod for door switch. The upper end 18A of the upper pressure rod 18 is connected to the back of the door 20 . That is, the upper end 18A of the door switch upper pressure rod 18 is pivotally connected around the first pivot point P ₁ so as to be able to swing arbitrarily. Furthermore, the lower end 18B of the upper pressure rod 18 is pivotally connected to the upper connecting portion 12 of the parallel connecting mechanism Z around the second pivot point P ₂ (refer to the side views in Figures 1 and 2).

Here, the point where the upper connecting portion 12 is pivotally connected to the box-shaped fixing portion 1 (the base 6 ) is called the third pivot point P ₃ . That is to say, the above-mentioned axis O ₁₂ in Figures 1 and 2 is equivalent to the third pivot point P ₃ .

As shown in Figure 2, when the object storage rack 10 is pulled out to the maximum pull-down state, the positions of each point P ₁ , P ₂ , and P ₃ are set so that the second pivot point P ₂ is relative to The reference straight line L ₀ connecting the third pivot point P ₃ and the first pivot point P ₁ is located in the front and lower position when viewed from the side. With this setting, it is obvious from Figure 2 that the self-weight W ₂₀ of the door 20 exerts a force to prevent the unloaded article storage rack 10 from suddenly moving upward.

Specifically, in Figure 2 , the door 20 generates a downward (pressing down) moment M ₂₀ with the pivot fulcrum of the pivot member 16 as the center due to its own weight W ₂₀ . As shown in Figure 2, the downward moment M ₂₀ is transmitted to the upper pressure rod 18 through the first pivot point P ₁ . The upper pressure rod 18 transmits the vector F ₁₈ (the force represented) to the second pivot point. Point P ₂ .

In order to position the second pivot point P ₂ at the front and lower position relative to the reference straight line L ₀ connecting the third pivot point P ₃ and the first pivot point P ₁ shown in Figure 2 , as shown in Figure 3 The torque M ₁₂ shown (counterclockwise) is generated about the third pivot point P ₃ .

That is, M ₁₂ =F ₁₈ ×R ₃ ...(Formula 1)

Moreover, in the formula 1, R ₃ is the distance (arm length) of the vertical line hanging from the third pivot point P ₃ to the vector F ₁₈ (at a right angle). In this way, when the unloaded article storage rack 10 suddenly moves upward (rises) due to the weight W ₂₀ of the door 20 , the torque M ₁₂ in the equation 1 acts as a blocking force to prevent the rise.

In order to make the functions (efficiencies) and advantages of the present invention clearer, Figures 8 to 10 showing conventional examples are supplemented as follows while comparing them with Figures 1 to 3 above.

Figure 9 shows the conventional article storage rack 52 in the maximum pull-down state. The positions of each point P ₁ , P ₂ and P ₃ have been set so that the second pivot point P ₂ is relative to the (above) The reference straight line L ₀ connecting the third pivot point P ₃ and the first pivot point P ₁ is located at the rear and upper position when viewed from the side.

Therefore, it is obvious from FIG. 9 that the self-weight W ₅₆ of the door 56 helps (not prevents, but instead assists) the unloaded article storage rack 52 to suddenly rise (move upward). More specifically, in Figure 9, the door 56 generates a downward (pressing down) moment M ₅₆ due to its own weight W ₅₆ .

As shown in Figure 9, the downward moment M ₅₆ is transmitted to the upper pressure rod 60 through the small connecting mechanism 57 and the first pivot point P ₁ , and the vector F _{60 (represented force) is transmitted to the upper pressure rod 60} to the second pivot point P ₂ .

In Figure 9, in order to position the second pivot point P ₂ at the rear and upper position relative to the reference straight line L ₀ connecting the third pivot point P ₃ and the first pivot point P ₁ , as shown in Figure 10 The (clockwise) torque M ₅₃ is generated around the third pivot point P ₃ .

That is, M ₅₃ =F ₆₀ ×R ₄ ...(Formula 2)

Moreover, in the formula 2, R ₄ is the distance (arm length) of the vertical line hanging from the third pivot point P ₃ to the vector F ₆₀ (at a right angle). Due to the weight W ₅₆ of the door 56 , the article storage rack 52 in the unloaded state acts in the opposite direction compared to the present invention (see FIGS. 2 and 3 ). That is, in the conventional example shown in Figures 9 and 10, the object storage rack 52 in the unloaded state may suddenly rise due to the weight W ₅₆ of the door 56.

Like this, in the conventional examples shown in Figures 8 to 10, the article storage rack 52 in the unloaded state suddenly rises from the maximum pull-out (maximum pull-down) state, and the operation of placing the stored items becomes extremely difficult, making it convenient to use. Poor sex.

Next, as shown in Figures 4 and 6, the upper end 18A of the upper pressure rod 18 is attached with a rotating wheel 25 made of plastic. The rotating wheel 25 can rotate arbitrarily around the horizontal axis L ₂₅ .

As shown in Figures 4 to 7, the receiving member 26 made of plastic or the like is fixed on the back of the door 20. The receiving part 26 has an integrated mounting piece 28 and a holding part 30. The mounting piece 28 has two holes 27 for inserting bolts or screws, and the holding part 30 has a storage space 29 to rotatably store and hold the rotating wheel 25. . Moreover, the rotating wheel 25 can only be inserted arbitrarily toward S ₁ from one side of the accommodating member 26 . In other words, the rotating wheel 25 is inserted into the storage space 29 from one side direction _S1 and is held.

As shown in FIG. 5(A) , one side surface has a wide opening shape, and as shown in FIG. 5(B) , most of the other side surface is closed by the closing wall part 31 . In a specific example, the storage space 29 is in the shape of a half-track cut off the arena track at the short axis. The transverse dimension W ₂₉ of the half-track-shaped storage space 29 is set to be slightly larger than the outer diameter D of the rotating wheel 25 .

However, in Figures 4 to 7, the vertical dimension H of the storage space 29 is sufficiently larger than the outer diameter D of the rotating wheel 25, and there is a sufficient gap ΔH (in the vertical direction) as shown in Figure 6.

Moreover, in the lateral direction S ₁ where the rotating wheel 25 (with gaps on the left and right) is inserted, the accommodating member 26 is positioned at each position close to the back of the door 20 and far away from the back of the door 20 (i.e., the upper and lower positions in Figure 4 ) are provided with small-width protruding pieces 32 and 33 protrudingly. The small-width protruding pieces 32 and 33 on the upper and lower sides in the side direction _S1 serve to prevent the rotating wheel 25 from being detached from the storage space 29 to the outside, as is apparent from Figures 4 and 7 .

Furthermore, in the state shown in FIG. 2 (although illustration is omitted), with the door 20 and the upper pressure rod 18 separated, the main components can be set (installed) in the box-shaped fixing part 1. After such main components are installed in the box-shaped fixing part 1, (as can be clearly understood from Figure 4), the upper end 18A of the pressure rod 18 with the rotating wheel 25 is inserted into the storage space in a slightly inclined posture. 29, the rotating wheel 25 can be stored as shown in Figure 4, can be connected and connected easily, and can be maintained by the small-width protruding pieces 32, 33 to prevent detachment. In short, there is an advantage that the work of arranging (installing) the above-mentioned main components in the box-shaped fixing part 1 can be performed very easily.

The present invention is as described in detail above. The lifting storage device includes: a front opening box-shaped fixing part 1; an article storage rack 10 for placing stored objects; and a parallel connection mechanism Z for keeping the object storage rack 10 horizontal at all times. And guide its lifting; the door 20 is pivotally connected to the upper edge 15 of the front opening 1P of the box-shaped fixed part 1; and the upper pressure rod 18 for opening and closing the door, the upper end 18A is arbitrarily rotatable around the first pivot point P ₁ Pivotably connected to the back of the door 20, and the lower end 18B is pivotably connected to the upper connecting portion 12 of the parallel connection mechanism Z around the second pivot point _P2 . When the article storage rack 10 is pulled out to the maximum In the lower state, for the reference straight line L ₀ connecting the third pivot point P ₃ of the upper connecting part 12 to the box-shaped fixing part 1 and the first pivot point P ₁ , the second pivot point is set. Point P ₂ is located at the front and bottom when viewed from the side, so as to prevent the unloaded object storage rack 10 from suddenly moving upward due to the weight W ₂₀ of the door 20 . Therefore, when the lifting storage device is used for the first time, Or when there is no stored items at all, in the maximum pull-down (pull-out) state, the user can hold the stored items with both hands without touching the item storage rack 10, and then put them in easily and safely. (Store to) article storage rack 10. Especially for women or people with weak health, they can easily and smoothly put in storage items in the item storage rack 10 in the unloaded state and the maximum pull-down state, which is safe and convenient to use. In addition, in the conventional device, a knuckle catch 64 as shown in Figure 9 must be attached to prevent the upper connecting portion 61 from suddenly swinging upward, but this can be omitted in the present invention (see Figures 1 and 2).

In addition, the upper end of the upper pressure rod 18 for opening and closing the door of the present invention is provided with a rotating wheel 25. The rotating wheel 25 can rotate arbitrarily around the horizontal axis L _25. The receiving member 26 is fixed on the back of the door 20. The rotating wheel 25 It is inserted into and held in the receiving member 26 from one side direction _S1 . Therefore, the operation step is to open the door 20 upward widely while the back side of the door 20 and the upper door opening and closing pressure rod 18 are kept unconnected. The "main components" such as the parallel connection mechanism Z are installed (set) inside 1, and then the rotating wheel 25 is inserted from one side of the housing 26 and the upper pressure rod 18 for door opening and closing is installed. The installation of the above-mentioned "main components" Work becomes extremely easy and work efficiency can be improved.

In addition, in the direction S ₁ of the side where the rotating wheel 25 is inserted into the receiving member 26 , the small-width protruding pieces 32 and 33 for preventing the rotating shaft from falling off are protrudingly provided at positions close to the back of the door and far away from the back of the door. Therefore, the above-mentioned After the "main component" is installed inside the box-shaped fixing part 1, the upper end of the door opening and closing upper pressure rod 18 can be smoothly inserted from one side direction _S1 . Moreover, once inserted, it will not suddenly come off, and the door 20 can be opened and closed reliably and smoothly.

1: Fixed part

1P: Front opening

4: Inner surface of side wall

6:Abutment

10: Item storage rack

11: Lower connection part

12: Upper connection part

15: Top

16: Pivot joint

18: Upper pressure rod

18A: Upper end

18B:lower end

20:door

L ₀ : reference straight line

M ₂₀ : Torque

O ₁₁ , O ₁₂ , O ₂₁ , O ₂₂ : axis

P ₁ : first pivot point

P ₂ : Second pivot point

P ₃ : The third pivot point

W ₂₀ : own weight

Z: Parallel connection mechanism

Claims (3)

A lifting storage device is provided with: a front opening-shaped box-shaped fixing part (1); an object storage rack (10) for placing storage objects; a parallel connection mechanism (Z) for placing the object storage rack (10) at any time Maintain the level and guide its lifting; the door (20) is pivotally connected to the upper edge (15) of the front opening (1P) of the box-shaped fixed part (1); and the upper pressure rod (18) for opening and closing the door, the upper end ( 18A) is pivotally connected to the back of the door (20) around the first pivot point (P ₁ ), and the lower end (18B) is pivotally connected to the parallel hinge around the second pivot point (P ₂ ). The upper connecting part (12) of the connecting mechanism (Z) is pivotally connected to the box-shaped fixing part (12) when the object storage rack (10) is pulled out to the maximum pull-down state. The reference straight line (L ₀ ) connecting the third pivot point (P ₃ ) of 1) and the first pivot point (P ₁ ) sets the second pivot point (P ₂ ) to be located in the front when viewed from the side. below to exert a force that prevents the object storage rack (10) in an unloaded state from suddenly moving upward due to the weight (W ₂₀ ) of the door (20). The lifting storage device of claim 1, wherein the upper end of the upper pressure rod (18) for opening and closing the door is provided with a rotating wheel (25), and the rotating wheel (25) can rotate arbitrarily around the horizontal axis (L ₂₅ ), and the receiving member (26) is fixed on the back side of the door (20), and the rotating wheel (25) is inserted into and held in the accommodating member (26) from one side (S ₁ ). The lifting storage device of claim 2, wherein the receiving member (26) has small-width protruding pieces (32, 33) for preventing the rotation shaft from falling off in the side direction (S ₁ ) where the rotating wheel (25) is inserted. The protrusions are arranged at various positions close to the back of the door and far away from the back of the door.