Automatic lifting storage device

Abstract

The utility model provides an automatic lifting material storage device which comprises a material storage frame, a lifting bearing seat, a first elastic friction assembly and a second elastic friction assembly, a vertically-sunken containing groove is formed in the material storage frame, and the lifting bearing seat vertically moves in the containing groove; the first elastic friction assembly is arranged on the left side of the lifting bearing seat and abuts against the left inner side wall of the containing groove in an elastic friction mode. The second elastic friction assembly is arranged on the right side of the lifting bearing seat, and the second elastic friction assembly abuts against the right inner side wall of the containing groove in an elastic friction mode. The automatic lifting storage device has the advantages that the structure is simple and compact, and the boxing speed and efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the technical field of material storage devices, and in particular to an automatic lifting and lowering material storage device. Background Technology

[0002] As we all know, blood collection tubes are commonly used blood collection containers in hospitals. Blood sample testing is an important means for doctors to diagnose diseases and is also an essential part of routine physical examinations for ordinary people. Therefore, medical treatment and physical examinations consume a large number of blood collection tubes every year.

[0003] In the production process of blood collection tubes, the neatly arranged blood collection tubes need to be stored in storage boxes. However, the current storage box structure is extremely rudimentary. The blood collection tubes need to be moved from the neatly arranged workstation to the bottom of the storage box and then stacked up. This makes the transfer distance from the neatly arranged workstation to the placement position in the storage box too long. This repeated transfer of blood collection tubes consumes a lot of transfer time, greatly reducing the speed of blood collection tube packing. The efficiency is extremely low, which seriously affects the production and processing efficiency of blood collection tubes. As a result, the production and processing cost of blood collection tubes remains high and can no longer meet the needs of efficient mass production and processing.

[0004] Therefore, there is an urgent need for an automatic lifting and storage device to overcome the aforementioned problems. Summary of the Invention

[0005] The purpose of this utility model embodiment is to provide an automatic lifting and storage device, which has the advantages of simple and compact structure and can improve packing speed and efficiency.

[0006] To achieve the above objectives, a first aspect of this utility model provides an automatic lifting and storing device, comprising: a storage frame, a lifting support, a first elastic friction component, and a second elastic friction component. The storage frame has a vertically recessed receiving groove, and the lifting support moves vertically within the receiving groove. The first elastic friction component is located on the left side of the lifting support and elastically abuts against the left inner sidewall of the receiving groove. The second elastic friction component is located on the right side of the lifting support and elastically abuts against the right inner sidewall of the receiving groove.

[0007] Optionally, the first elastic friction assembly includes: a plurality of first friction abutments and a first elastic element corresponding to each of the first friction abutments. The first friction abutments are moved in the left-right direction and disposed on the left side of the lifting support. The first elastic element abuts between the lifting support and the first friction abutment. The first elastic element constantly drives the first friction abutments to rub against the left inner sidewall of the receiving groove.

[0008] Optionally, the first friction contact member includes: a first sliding column and a first friction block, wherein the first friction block is fixedly connected to the end of the first sliding column.

[0009] Optionally, the left side of the lifting support is formed with a first mounting groove corresponding to the first friction contact member. The first mounting groove is recessed from left to right. The first sliding column moves in the left-right direction and is accommodated in the first mounting groove. The first elastic member is compressed and abuts against the bottom of the first mounting groove and the first sliding column. The first friction rubber block rubs against the left inner sidewall of the accommodating groove.

[0010] Optionally, the automatic lifting storage device further includes: a first limiting plate, the first limiting plate being fixed to the left side of the lifting support seat, the first limiting plate having first clearance holes corresponding to the first mounting grooves, the first clearance holes corresponding to the grooves of the corresponding first mounting grooves in the left-right direction, and the inner diameter of the first clearance hole being smaller than the inner diameter of the first mounting groove, the outer diameter of the first sliding column being larger than the inner diameter of the first clearance hole, and the first friction rubber block slidingly passing through the first clearance hole in the left-right direction.

[0011] Optionally, the second elastic friction assembly includes: a plurality of second friction abutments and a second elastic member corresponding to each of the second friction abutments. The second friction abutments are moved in the left-right direction and disposed on the right side of the lifting support. The second elastic member abuts between the lifting support and the second friction abutment. The second elastic member constantly drives the second friction abutments to rub against the right inner sidewall of the receiving groove.

[0012] Optionally, the second friction contact member includes: a second sliding column and a second friction block, wherein the second friction block is fixedly connected to the end of the second sliding column.

[0013] Optionally, a second mounting groove corresponding to the second friction contact member is formed on the right side of the lifting support. The second mounting groove is recessed from right to left. The second sliding column moves in the left-right direction and is accommodated in the second mounting groove. The second elastic member is compressed and abuts against the bottom of the second mounting groove and the second sliding column. The second friction rubber block rubs against the right inner sidewall of the accommodating groove.

[0014] Optionally, the automatic lifting storage device further includes: a second limiting plate, the second limiting plate being fixed to the right side of the lifting support seat, the second limiting plate having second clearance holes corresponding to the second mounting grooves, the second clearance holes corresponding to the grooves of the corresponding second mounting grooves in the left-right direction, and the inner diameter of the second clearance hole being smaller than the inner diameter of the second mounting groove, the outer diameter of the second sliding column being larger than the inner diameter of the second clearance hole, and the second friction rubber block slidingly passing through the second clearance hole in the left-right direction.

[0015] Optionally, a plurality of observation windows communicating with the receiving groove are also formed on the side wall of the storage frame;

[0016] The automatic lifting storage device further includes a limiting guide assembly, which includes a mounting base, a first limiting wheel group, and a second limiting wheel group. The first limiting wheel group includes a first limiting roller and a second limiting roller, and the second limiting wheel group includes a third limiting roller and a fourth limiting roller. The mounting base is fixed to the bottom of the storage frame. The first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are all pivotally connected to the bottom of the mounting base. The pivot axes of the first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are all vertically arranged, and the first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are arranged in an array with gaps. A limiting channel is formed between the first limiting wheel group and the second limiting wheel group.

[0017] Because the storage frame of the automatic lifting storage device of this utility model has a vertically recessed receiving groove, the lifting support seat moves vertically within the receiving groove; the first elastic friction component is located on the left side of the lifting support seat, and the first elastic friction component elastically frictionally abuts against the left inner sidewall of the receiving groove; the second elastic friction component is located on the right side of the lifting support seat, and the second elastic friction component elastically abuts against the right inner sidewall of the receiving groove. Thus, the lifting support seat generates an upward frictional force through the elastic friction of the first elastic friction component against the left inner sidewall of the receiving groove and the elastic friction of the second elastic friction component against the right inner sidewall of the receiving groove. When no external force pushes the lifting support seat downward, the lifting support seat can be positioned within the receiving groove; when a sufficiently large external force pushes the lifting support seat downward, the lifting support seat can slide downward within the receiving groove. During material storage, the lifting support is first moved to the upper end of the receiving groove. When material is placed into the receiving groove, the material rests on the lifting support. Each time material is placed, the lifting support is simultaneously pushed downwards a preset distance by the material. As the lifting support slides downwards, more space is gradually freed up to hold more material. Furthermore, the material is always placed at the upper end of the receiving groove, eliminating the need to send the material to the bottom, thus significantly shortening the material transfer distance and saving time. This greatly improves the speed and efficiency of material packing, thereby significantly increasing production efficiency and reducing production costs, better meeting the needs of high-efficiency, mass production. Moreover, the structure is simpler and more compact. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the automatic lifting and storing device in an embodiment of the present invention.

[0019] Figure 2 for Figure 1 A diagram from another angle.

[0020] Figure 3 for Figure 1 Top view.

[0021] Figure 4 For along Figure 3 A cross-sectional view along line AA in the middle.

[0022] Figure 5 for Figure 4 Enlarged schematic diagram of section B in the middle.

[0023] Figure 6 for Figure 4 Enlarged schematic diagram of section C.

[0024] Figure 7This is a three-dimensional schematic diagram of the combination of the lifting support, the first elastic friction component, the second elastic friction component, the first limiting plate, and the second limiting plate of the automatic lifting storage device in this embodiment of the present utility model. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments, but the implementation of the present invention is not limited thereto.

[0026] Please see Figures 1 to 7 The automatic lifting and storing device 100 of this utility model includes: a storage frame 10, a lifting support 20, a first elastic friction component 30, and a second elastic friction component 40. A vertically recessed receiving groove 11 is formed within the storage frame 10, and the lifting support 20 moves vertically within the receiving groove 11. The first elastic friction component 30 is located on the left side of the lifting support 20 and elastically frictionally abuts against the left inner sidewall of the receiving groove 11. The second elastic friction component 40 is located on the right side of the lifting support 20 and elastically frictionally abuts against the right inner sidewall of the receiving groove 11. Then, the lifting support 20 elastically abuts against the left inner wall of the receiving groove 11 through the first elastic friction component 30 and elastically abuts against the right inner wall of the receiving groove 11 through the second elastic friction component 40, forming an upward friction force. When there is no external force pushing the lifting support 20 downward, the lifting support 20 can be positioned in the receiving groove 11; when there is a sufficiently large external force pushing the lifting support 20 downward, the lifting support 20 can slide downward in the receiving groove 11. During material storage, the lifting support 20 is first moved to the upper end of the receiving groove 11. When material is placed into the receiving groove 11, the material is placed on the lifting support 20. Each time material is placed, the lifting support 20 is pushed downwards by a preset distance by the material. As the lifting support 20 slides downwards, more upper space is gradually freed up to hold more material. Furthermore, the material is always placed at the upper end of the receiving groove 11, eliminating the need to feed the material to the bottom of the groove. This significantly shortens the material transfer distance, greatly saves transfer time, and greatly improves the speed of material packing, thus significantly increasing efficiency and production processing efficiency while reducing production processing costs. This better meets the needs of high-efficiency, mass production processing. Moreover, the structure is simpler and more compact. Specifically, as follows:

[0027] Please see Figure 4 , Figure 5 and Figure 6In this embodiment, the first elastic friction assembly 30 includes: a plurality of first friction abutment members 31 and a first elastic member 32 corresponding to each of the first friction abutment members 31. The first friction abutment members 31 are movably disposed on the left side of the lifting support 20 in the left-right direction. The first elastic member 32 abuts against the lifting support 20 and the first friction abutment members 31. The first elastic member 32 constantly drives the first friction abutment members 31 to rub against the left inner sidewall of the receiving groove 11. Thus, the elastic pushing force of the first elastic member 32 maintains the first friction abutment members 31 in friction against the left inner sidewall of the receiving groove 11, making the structure simpler and more reasonable.

[0028] In detail, in this embodiment, the first friction contact 31 includes a first sliding column 311 and a first friction block 312, with the first friction block 312 fixedly connected to the end of the first sliding column 311. Furthermore, a first mounting groove 21 corresponding to the first friction contact 31 is formed on the left side of the lifting support 20. The first mounting groove 21 is recessed from left to right. The first sliding column 311 moves in the left-right direction and is accommodated within the first mounting groove 21. The first elastic member 32 can be a spring, but is not limited to this. The first elastic member 32 is compressed and abuts against the bottom of the first mounting groove 21 and the first sliding column 311. The first friction block 312 rubs against the left inner sidewall of the accommodating groove 11. Thus, the friction of the first friction block 312 against the left inner sidewall of the accommodating groove 11 generates a more stable contact-type frictional resistance, making the downward movement of the lifting support 20 more stable.

[0029] Furthermore, the automatic lifting and storage device 100 of this utility model also includes: a first limiting plate 50, which is fixed to the left side of the lifting support 20. The first limiting plate 50 has first clearance holes 51 corresponding to the first mounting grooves 21. Each clearance hole 51 is directly connected to the corresponding opening of the first mounting groove 21 in the left-right direction. The inner diameter of the first clearance hole 51 is smaller than the inner diameter of the first mounting groove 21, and the outer diameter of the first sliding column 311 is larger than the inner diameter of the first clearance hole 51. The first friction rubber block 312 slides through the first clearance hole 51 in the left-right direction. Thus, the first sliding column 311 is limited within the first mounting groove 21 by the first limiting plate 50, preventing it from falling out of the first mounting groove 21, making the structure safer and more reasonable.

[0030] Please see Figure 4 , Figure 6 and Figure 7The second elastic friction assembly 40 includes: a plurality of second friction abutment members 41 and second elastic members 42 corresponding to each of the second friction abutment members 41. The second friction abutment members 41 are movable in the left-right direction and are located on the right side of the lifting support 20. The second elastic members 42 abut against the lifting support 20 and the second friction abutment members 41. The second elastic members 42 constantly drive the second friction abutment members 41 to rub against the right inner sidewall of the receiving groove 11. Thus, the elastic pushing force of the second elastic members 42 maintains the second friction abutment members 41 in friction against the left inner sidewall of the receiving groove 11, making the structure simpler and more reasonable.

[0031] In detail, in this embodiment, the second friction contact 41 includes a second sliding column 411 and a second friction block 412, with the second friction block 412 fixedly connected to the end of the second sliding column 411. Furthermore, a second mounting groove 22 corresponding to the second friction contact 41 is formed on the right side of the lifting support 20. The second mounting groove 22 is recessed from right to left. The second sliding column 411 moves in the left-right direction and is accommodated within the second mounting groove 22. The second elastic member 42 can be a spring, but is not limited to this. The second elastic member 42 is compressed and abuts against the bottom of the second mounting groove 22 and the second sliding column 411. The second friction block 412 rubs against the right inner wall of the accommodating groove 11. Thus, the friction of the second friction block 412 against the right inner wall of the accommodating groove 11 generates a more stable contact-type frictional resistance, making the downward movement of the lifting support 20 more stable.

[0032] Furthermore, the automatic lifting and storage device 100 of this utility model also includes: a second limiting plate 60, which is fixed to the right side of the lifting support 20. The second limiting plate 60 has second clearance holes 61 corresponding to the second mounting grooves 22. Each second clearance hole 61 is directly connected to the corresponding groove of the second mounting groove 22 in the left-right direction. The inner diameter of the second clearance hole 61 is smaller than the inner diameter of the second mounting groove 22, and the outer diameter of the second sliding column 411 is larger than the inner diameter of the second clearance hole 61. The second friction rubber block 412 slides through the second clearance hole 61 in the left-right direction. Thus, the second sliding column 411 is limited within the second mounting groove 22 by the second limiting plate 60, preventing it from falling out of the second mounting groove 22, making the structure safer and more reasonable.

[0033] For example, in this embodiment, the left side of the lifting support 20 is provided with six first friction abutment members 31 and six corresponding first elastic members 32, and the right side of the lifting support 20 is provided with six second friction abutment members 41 and six corresponding second elastic members 42. The first friction abutment members 31 and the second friction abutment members 41 are aligned one-to-one in the left-right direction, thereby forming six contact-type frictional resistance points on the left and right sides of the lifting support 20. This results in a more balanced and stable frictional force distribution, making the downward movement of the lifting support 20 more stable, preventing accidental falls, and making the structure safer and more reasonable. Of course, the number of first friction abutment members 31, first elastic members 32, second friction abutment members 41, and second elastic members 42 is not limited to this. Those skilled in the art can flexibly choose according to actual usage needs, all within the protection scope of this utility model. Therefore, it will not be described in detail here.

[0034] Please see Figure 1 and Figure 2 In a preferred embodiment, the storage frame 10 also has several observation windows 12 connected to the receiving groove 11 on its side wall to facilitate observation of the downward sliding position of the lifting support 20, making it more convenient to use and more rational in structure.

[0035] Please see Figure 1 and Figure 2 Optionally, in this embodiment, the automatic lifting storage device 100 of the present invention further includes: a limiting guide assembly 70, which includes: a mounting base 71, a first limiting wheel set 72, and a second limiting wheel set 73. The first limiting wheel set 72 includes a first limiting roller 721 and a second limiting roller 722, and the second limiting wheel set 73 includes a third limiting roller 731 and a fourth limiting roller 732. The mounting base 71 is fixed to the bottom of the storage frame 10, and the first limiting roller 721, the second limiting roller 722, ... The first limiting roller 722, the second limiting roller 722, the third limiting roller 731, and the fourth limiting roller 732 are all pivotally connected to the bottom of the mounting base 71. The pivot axes of the first limiting roller 721, the second limiting roller 722, the third limiting roller 731, and the fourth limiting roller 732 are all vertically arranged, and they are distributed in an array with gaps. A limiting channel 74 is formed between the first limiting wheel group 72 and the second limiting wheel group 73. The limiting channel 74 can engage with an external guide rail to guide the movement of the automatic lifting storage device 100 of this utility model, making it more convenient and reasonable to use.

[0036] The working principle of the automatic lifting and storing device 100 of the utility model will be described in detail with reference to the accompanying drawings:

[0037] During the material storage process, the lifting support 20 is first moved to the upper end of the receiving groove 11.

[0038] When material is placed into the receiving groove 11, the material is placed on the lifting support 20. Each time material is placed, the lifting support 20 is pushed down a preset distance by the material. As the lifting support 20 slides down, more space is gradually freed up to hold more material. Moreover, the material is placed at the top of the receiving groove 11 each time, without having to send the material to the bottom of the receiving groove 11 until the lifting support 20 slides down to the bottom of the receiving groove 11 and the material fills the top of the receiving groove 11.

[0039] Furthermore, if it is necessary to package the material in a packaging bag, the packaging bag can be placed in the receiving groove 11. The bottom of the packaging bag is supported by the lifting support seat 20. When the material is placed in, the packaging bag slides down synchronously with the material and the lifting support seat 20.

[0040] For example, the material stored in the automatic lifting storage device 100 of this invention can be blood collection tubes. That is, neatly arranged blood collection tubes are stored in the automatic lifting storage device 100. Simply move the blood collection tubes from the neatly arranged position to the upper end of the receiving groove 11. Each time a row of neatly arranged blood collection tubes is placed, the lifting support 20 is simultaneously pushed downwards a preset distance by the pressure of the blood collection tubes until the upper end of the receiving groove 11 is full. Of course, the specific type of material stored in the automatic lifting storage device 100 of this invention is not limited to this. Those skilled in the art can flexibly choose according to actual usage needs, all of which are within the protection scope of this invention. Therefore, further details will not be elaborated here.

[0041] Because the storage frame 10 of the automatic lifting storage device 100 of this utility model has a vertically recessed receiving groove 11, the lifting support seat 20 moves vertically within the receiving groove 11; the first elastic friction component 30 is located on the left side of the lifting support seat 20, and the first elastic friction component 30 elastically frictionally abuts against the left inner side wall of the receiving groove 11; the second elastic friction component 40 is located on the right side of the lifting support seat 20, and the second elastic friction component 40 elastically frictionally abuts against the right inner side wall of the receiving groove 11. Thus, the lifting support seat 20 generates an upward frictional force through the elastic friction of the first elastic friction component 30 against the left inner side wall of the receiving groove 11 and the elastic friction of the second elastic friction component 40 against the right inner side wall of the receiving groove 11. When no external force pushes the lifting support seat 20 downward, the lifting support seat 20 can be positioned within the receiving groove 11; when a sufficiently large external force pushes the lifting support seat 20 downward, the lifting support seat 20 can slide downward within the receiving groove 11. During material storage, the lifting support 20 is first moved to the upper end of the receiving groove 11. When material is placed into the receiving groove 11, the material rests on the lifting support 20. Each time material is placed, the lifting support 20 is pushed downwards a preset distance by the material being pressed down. As the lifting support 20 slides downwards, more upper space is gradually freed up to accommodate more material. Furthermore, the material is always placed at the upper end of the receiving groove 11, eliminating the need to feed it to the bottom. This significantly shortens the material transport distance, greatly saves transport time, and greatly increases the speed of material packing, thus significantly improving efficiency and production processing efficiency while reducing production costs. This better meets the needs of high-efficiency, mass production. Moreover, the structure is simpler and more compact.

[0042] The present invention has been described above with reference to the embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. An automatic lifting and storing device, characterized in that, include: The storage frame includes a lifting support, a first elastic friction component, and a second elastic friction component. The storage frame has a vertically recessed receiving groove, and the lifting support moves vertically within the receiving groove. The first elastic friction component is located on the left side of the lifting support and elastically abuts against the left inner sidewall of the receiving groove. The second elastic friction component is located on the right side of the lifting support and elastically abuts against the right inner sidewall of the receiving groove.

2. The automatic lifting and storing device as described in claim 1, characterized in that, The first elastic friction assembly includes: a plurality of first friction abutments and a first elastic element corresponding to each of the first friction abutments. The first friction abutments are moved in the left and right direction and are disposed on the left side of the lifting support. The first elastic element abuts between the lifting support and the first friction abutment. The first elastic element constantly drives the first friction abutments to rub against the left inner sidewall of the receiving groove.

3. The automatic lifting and storing device as described in claim 2, characterized in that, The first friction contact component includes: a first sliding column and a first friction rubber block, wherein the first friction rubber block is fixedly connected to the end of the first sliding column.

4. The automatic lifting and storing device as described in claim 3, characterized in that, The left side of the lifting support has a first mounting groove corresponding to the first friction contact member. The first mounting groove is recessed from left to right. The first sliding column moves in the left and right direction and is accommodated in the first mounting groove. The first elastic member is compressed and abuts against the bottom of the first mounting groove and the first sliding column. The first friction rubber block rubs against the left inner side wall of the accommodating groove.

5. The automatic lifting and storing device as described in claim 4, characterized in that, Also includes: The first limiting plate is fixed to the left side of the lifting support seat. The first limiting plate has a first clearance hole that corresponds to the first mounting groove. The first clearance hole is directly connected to the slot of the corresponding first mounting groove in the left-right direction. The inner diameter of the first clearance hole is smaller than the inner diameter of the first mounting groove. The outer diameter of the first sliding column is larger than the inner diameter of the first clearance hole. The first friction rubber block slides through the first clearance hole in the left-right direction.

6. The automatic lifting and storing device as described in claim 1, characterized in that, The second elastic friction assembly includes: a plurality of second friction abutments and a second elastic element corresponding to each of the second friction abutments. The second friction abutments are moved in the left-right direction and are disposed on the right side of the lifting support. The second elastic element abuts between the lifting support and the second friction abutment. The second elastic element constantly drives the second friction abutments to rub against the right inner sidewall of the receiving groove.

7. The automatic lifting storage device as described in claim 6, characterized in that, The second friction contact component includes: a second sliding column and a second friction rubber block, wherein the second friction rubber block is fixedly connected to the end of the second sliding column.

8. The automatic lifting storage device as described in claim 7, characterized in that, The right side of the lifting support is formed with a second mounting groove corresponding to the second friction contact member. The second mounting groove is recessed from right to left. The second sliding column moves in the left and right direction and is accommodated in the second mounting groove. The second elastic member is compressed and abuts against the bottom of the second mounting groove and the second sliding column. The second friction rubber block rubs against the right inner side wall of the accommodating groove.

9. The automatic lifting and storing device as described in claim 8, characterized in that, Also includes: The second limiting plate is fixed to the right side of the lifting support seat. The second limiting plate has a second clearance hole that corresponds to the second mounting groove. The second clearance hole is directly connected to the slot of the corresponding second mounting groove in the left-right direction. The inner diameter of the second clearance hole is smaller than the inner diameter of the second mounting groove. The outer diameter of the second sliding column is larger than the inner diameter of the second clearance hole. The second friction rubber block slides through the second clearance hole in the left-right direction.

10. The automatic lifting storage device according to any one of claims 1 to 9, characterized in that, The storage frame also has several observation windows connected to the receiving groove on its side wall; The automatic lifting storage device further includes a limiting guide assembly, which includes a mounting base, a first limiting wheel group, and a second limiting wheel group. The first limiting wheel group includes a first limiting roller and a second limiting roller, and the second limiting wheel group includes a third limiting roller and a fourth limiting roller. The mounting base is fixed to the bottom of the storage frame. The first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are all pivotally connected to the bottom of the mounting base. The pivot axes of the first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are all vertically arranged, and the first limiting roller, the second limiting roller, the third limiting roller, and the fourth limiting roller are arranged in an array with gaps. A limiting channel is formed between the first limiting wheel group and the second limiting wheel group.

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