Fan blade resistance adjusting structure and fitness equipment with same

Abstract

The utility model provides a resistance adjusting structure of fan blades and fitness equipment with the same. The resistance adjusting structure of the fan blades comprises a rotating shaft, a fan blade seat, a plurality of fan blades, a sliding seat and a plurality of connecting pieces, the rotating shaft is driven by external force to rotate, so that the fan blades jointly surround the rotating shaft and synchronously rotate in a fluid, and rotating resistance is obtained; the sliding seat is driven by an adjusting force to move in an axial direction, and the fan blades swing by taking a pivoting end as a fulcrum to change an opening and closing angle between a reference line and an axis, so that a turning radius is changed along with the opening and closing angle, and the rotating resistance is further changed. Therefore, adjustment can be carried out according to the opening and closing degree of the fan blades, and the rotation resistance can be adjusted in a stepless mode.

Description

Technical Field

[0001] The utility model relates to a fitness device and a resistance adjustment structure of a fan blade in the fitness device. Background Art

[0002] The rowing machine is a common fitness equipment, which generally uses a combination of fan blades and pull ropes. When the operator pulls the pull rope, the pull rope drives the fan blades to rotate, and the fan blades then beat the air or water or other fluids to provide resistance.

[0003] For example, the specific structure of the water paddle structure and the water tank of the rowing machine provided by Chinese Patent Publication No. CN217448885U. The water paddle structure includes paddle blades and a shaft body driving the paddle blades to rotate synchronously, and a paddle blade angle adjustment mechanism is arranged between each paddle blade and the shaft body, and the paddle blade angle adjustment mechanism realizes the change of water resistance when the paddle blades rotate synchronously by adjusting the angles of each paddle blade.

[0004] Taiwan Patent Publication No. TWM594479 provides a water resistance rowing fitness equipment, including a frame, a water resistance device, fan blades, a pull belt and a seat. The fan blades of the aforementioned patent case can be added along the central axis to increase the resistance, and as long as the length of the water storage tank does not exceed the length of the seat rod, the number of fan blades can be increased to avoid increasing the overall width in order to increase the resistance, thereby achieving the effect of increasing the resistance without increasing the occupied space.

[0005] In terms of resistance adjustment, the aforementioned patent case CN217448885U adjusts the tilt angle of the fan blades, and the aforementioned Taiwan patent case TWM594479 adjusts the number of fan blades. Both patents cannot adjust the degree of opening and closing of the fan blades, and the resistance adjustment of the two patents is relatively limited. Utility Model Content

[0006] Therefore, the purpose of the present invention is to provide a resistance adjustment structure for a fan blade.

[0007] The utility model provides a resistance adjustment structure for a fan blade, comprising: a rotating shaft extending along an axial direction; a fan blade seat fixed to the rotating shaft, and the fan blade seat rotates with the rotation of the rotating shaft; a plurality of fan blades surrounding the rotating shaft together, each fan blade comprising a relative pivot end and a free end, the pivot ends being pivoted to the fan blade seat, each fan blade extending along a reference line between the pivot end and the free end, each fan blade being provided with a pivot portion between the pivot end and the free end; a sliding seat slidably fitted on the rotating shaft along the axial direction, the vertical distance between the free end of the fan blade and the axis of the rotating shaft being defined as a rotation radius; a plurality of connecting members, one end of each connecting member being pivoted to the sliding seat, and the other end of each connecting member being pivoted to the pivot portion corresponding to each fan blade.

[0008] The rotating shaft is driven to rotate by an external force, so that the fan blades rotate synchronously around the rotating shaft in a fluid to obtain a rotational resistance; the sliding seat is driven to move in the axial direction by an adjustment force, and the fan blades swing with the pivot end as a fulcrum, changing an opening and closing angle between the reference line and the axis line, so that the rotation radius changes with the opening and closing angle, thereby changing the size of the rotational resistance.

[0009] Furthermore, each of the fan blades includes a blade and a blade connector. The blade is fixed to one end of the blade connector. The other end of the blade connector is pivotally connected to the fan blade seat. The pivoting portion is located on the blade connector.

[0010] Furthermore, the pivotal portion is a first through hole, each connecting member has a second through hole, and a plurality of screws pass through the first through hole and the second through hole respectively to pivot each connecting member to the pivotal portion, and the diameter of the second through hole is substantially larger than the outer diameter of the screw.

[0011] Wherein, the fluid is a gas.

[0012] Furthermore, there is a covering member, in which the rotating shaft, the fan blade seat, the fan blade and the sliding seat are all arranged, and the rotating shaft is rotatably fixed to the covering member, and the covering member contains the fluid, which is a gas or a liquid.

[0013] The sliding seat extends out of the covering member, and a cap body is provided at one end of the sliding seat away from the fan blade seat, a bearing is provided between the cap body and the sliding seat, and the covering member is recessed with a receiving groove corresponding to the cap body; when the sliding seat moves in the axial direction, the cap body enters or leaves the receiving groove.

[0014] The utility model also provides a fitness equipment, including the above-mentioned fan blade resistance adjustment structure, and the fitness equipment further includes: a base frame, the fan blade resistance adjustment structure is arranged on the base frame; a force-applying member, which can be movably combined with the base frame, and the force-applying member is used to receive the external force; a force transmission member, one end of the force transmission member is connected to the force-applying member, and the other end of the force transmission member is directly or indirectly connected to the rotating shaft to drive the rotating shaft to rotate; an adjustment member, which is directly or indirectly connected to the sliding seat, and the adjustment member is used to receive an adjustment force.

[0015] Furthermore, the adjusting member is connected to the sliding seat via an adjusting transmission member, and the adjusting transmission member has a plurality of connection points connected to the sliding seat, the connection points surround the rotating shaft, and the base frame has at least one through hole for the adjusting transmission member to pass through.

[0016] Furthermore, an elastic member is arranged on a side of the sliding seat away from the fan blade seat, one end of the elastic member abuts against the base, and the other end of the elastic member abuts against the sliding seat; when the adjustment force drives the sliding seat away from the fan blade seat in the axial direction, the sliding seat and the base compress the elastic member, and the elastic member stores a first elastic force potential energy; when the adjustment force is removed or applied in reverse, the elastic member releases the first elastic force potential energy, and the elastic member drives the sliding seat to move in the axial direction to reset or approach the fan blade seat.

[0017] Furthermore, the force transmission member is fixedly wound on a reel, and a spiral spring connects the reel and the rotating shaft; when the external force drives the rotating shaft to rotate via the force transmission member, the force transmission member drives the reel to twist the spiral spring, and the spiral spring stores a second elastic potential energy; when the external force is removed, the spiral spring releases the second elastic potential energy, and the spiral spring drives the reel to idle relative to the rotating shaft, thereby resetting the force transmission member.

[0018] According to the above technical features, the following effects can be preferably achieved:

[0019] 1. By driving the sliding seat to move in the axial direction through the adjustment force, the opening and closing degree of the fan blades can be adjusted, thereby adjusting the rotation resistance steplessly.

[0020] 2. In addition to being a combination of blades and blade connectors, the fan blades can also be large-area blades to increase the contact area with the fluid.

[0021] 3. By using the second through hole whose diameter is substantially larger than the outer diameter of the screw, the connecting member can drive the fan blade to swing more smoothly.

[0022] 4. The fluid can be gas, or it can be selected as gas or liquid after matching with the covering according to the use requirements.

[0023] 5. The covering member is provided with a receiving groove to provide a sliding space for the sliding seat part, so that the distance of the rotating axis can be further shortened, thereby reducing the overall volume.

[0024] 6. The adjustment transmission member has multiple connection points connected to the sliding seat, and combined with the through holes on the base frame, the movement of the sliding seat can be more stable and smooth.

[0025] 7. The elastic member and the spiral spring can assist the sliding seat and the force transmission member to reset respectively for the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is the three-dimensional appearance of the first embodiment of the utility model Figure 1 , illustrating the resistance adjustment structure of the fan blades.

[0027] Figure 2It is a partially enlarged view of the first embodiment of the utility model.

[0028] Figure 3 This is a cross-sectional view of the first embodiment of the utility model. Figure 1 .

[0029] Figure 4 It is a partial exploded view of the first embodiment of the utility model.

[0030] Figure 5 This is a schematic diagram of the implementation of the first embodiment of the utility model Figure 1 , indicating that the opening and closing angle is 90 degrees.

[0031] Figure 6 This is a cross-sectional view of the first embodiment of the utility model. Figure 2 , indicating that when the opening and closing angle is 90 degrees, the elastic member has not been compressed.

[0032] Figure 7 This is a schematic diagram of the implementation of the first embodiment of the utility model Figure 2 , indicating that the opening and closing angle is 45 degrees.

[0033] Figure 8 This is a cross-sectional view of the first embodiment of the utility model. Figure 3 , indicating that when the opening and closing angle is 45 degrees, the elastic part is compressed.

[0034] Fig. 9 This is the three-dimensional appearance of the first embodiment of the utility model Figure 2 , indicating fitness equipment.

[0035] Fig.10 It is a side view of the second embodiment of the utility model.

[0036] Description of reference numerals: 100-fitness equipment; 1-resistance adjustment structure of fan blade; 11-rotating shaft; 12-fan blade seat; 121-first notch; 122-first ring; 13, 13a-fan blade; 131-free end; 132-pivot end; 133, 133a-pivot portion; 134, 134a-blade; 135-blade connector; 14-sliding seat; 141-cap body; 142-second notch; 143-second ring; 1 5, 15a-connecting member; 151-second through hole; 152-screw member; 16-covering member; 161-accommodating groove; 17-bearing; 2-base frame; 21-through hole; 3-force member; 4-force transmission member; 5-adjusting member; 6-adjusting transmission member; 61-connecting point; 7-volute spring; 8-reel; 9-elastic member; A1, A2-opening and closing angle; D-axial direction; L1-axis line; L2-reference line; R1, R2-rotation radius. DETAILED DESCRIPTION

[0037] Based on the above technical features, the resistance adjustment structure of the fan blade of the utility model and the main functions of the fitness equipment with the structure will be clearly presented in the following embodiments.

[0038] See also Figure 1 and Figure 2 , is a resistance adjustment structure 1 of a blade of the first embodiment of the utility model, which can be configured as a fitness equipment 100 of the utility model, such as Fig. 9 In actual implementation, the fitness equipment 100 can be a rowing machine, a rock climbing machine, a bicycle machine, or other equipment that requires resistance adjustment, and the present invention is not limited thereto.

[0039] The resistance adjustment structure 1 of the fan blade is disposed on a base frame 2 of the fitness equipment 100, and the resistance adjustment structure 1 of the fan blade includes:

[0040] A rotating shaft 11 extends along an axial direction D, and an axis L1 passes through the center of the rotating shaft 11 and extends along the axial direction D. Figure 5 shown.

[0041] A fan blade seat 12 is fixed to the rotating shaft 11 , and the fan blade seat 12 can rotate along with the rotation of the rotating shaft 11 .

[0042] A plurality of fan blades 13 surround the rotating shaft 11 .

[0043] See also Figures 2 to 5 Each fan blade 13 includes a free end 131 and a pivot end 132 opposite to each other. The pivot end 132 is pivotally connected to the fan blade seat 12. Each fan blade 13 extends along a reference line L2 between the pivot end 132 and the free end 131. Each fan blade 13 is provided with a pivot portion 133 between the pivot end 132 and the free end 131. Preferably, the pivot portion 133 is a first through hole.

[0044] Each of the fan blades 13 further includes a blade 134 and a blade connector 135 . The blade 134 is fixed to one end of the blade connector 135 . The other end of the blade connector 135 is pivotally connected to the fan blade seat 12 . The pivoting portion 133 is located on the blade connector 135 .

[0045] A sliding seat 14 is slidably mounted on the rotating shaft 11 along the axial direction D.

[0046] A plurality of connecting members 15 , one end of each connecting member 15 is pivotally connected to the sliding seat 14 , and the other end of each connecting member 15 is pivotally connected to the pivoting portion 133 corresponding to each of the fan blades 13 .

[0047] Each connecting member 15 has a second through hole 151, and a plurality of screws 152 pass through the pivot portion 133 and the second through hole 151 respectively to pivot each connecting member 15 to the pivot portion 133, and the diameter of the second through hole 151 is substantially larger than the outer diameter of the screw 152, so that the connecting member 15 can drive the fan blade 13 to swing more smoothly.

[0048] A covering member 16, the shaft 11, the fan blade seat 12, the fan blade 13, and the sliding seat 14 are all disposed in the covering member 16, and the shaft 11 is rotatably fixed to the covering member 16, and the covering member 16 contains a fluid, which is gas or liquid.

[0049] Preferably, the sliding seat 14 extends out of the covering member 16, and a cap body 141 is disposed at one end of the sliding seat 14 away from the fan blade seat 12, and the covering member 16 is recessed with a receiving groove 161 corresponding to the cap body 141. When the sliding seat 14 moves in the axial direction D, the cap body 141 enters or leaves the receiving groove 161. Since the receiving groove 161 provides a sliding space for part of the sliding seat 14, the required length of the rotating shaft 11 outside the covering member 16 can be shortened, thereby reducing the overall volume.

[0050] In actual implementation, the covering member 16 may not be provided, so that the fluid is directly a gas such as air, so that the user can choose according to actual needs.

[0051] Preferably, the shaft 11 and the base 2, the cap 141 and the sliding seat 14, and even the part of the fitness equipment 100 where there is a friction problem [please use the fitness equipment 100 with Fig. 9 ] can be respectively provided with a bearing 17, so that when the rotating shaft 11 and the sliding seat 14 rotate, the base frame 2 and the cap body 141 will not rotate together, and the cap body 141 can move synchronously with the sliding seat 14 in the axial direction D through the bearing 17.

[0052] See also Figure 1 , Figure 2 and Fig. 9 In addition to the fan blade resistance adjustment structure 1 and the base frame 2, the fitness equipment 100 also includes:

[0053] A force applying member 3 is movably coupled to the base frame 2 .

[0054] A force transmission member 4 , one end of which is connected to the force member 3 , and the other end of which is directly or indirectly connected to the rotating shaft 11 to drive the rotating shaft 11 to rotate.

[0055] An adjusting member 5 is directly or indirectly connected to the sliding seat 14 .

[0056] In a preferred embodiment of the present invention, the adjustment member 5 is connected to the sliding seat 14 via an adjustment transmission member 6, and the adjustment transmission member 6 has a plurality of connection points 61 connected to the sliding seat 14, and the connection points 61 surround the rotating shaft 11, and there is at least one through hole 21 on the base frame 2 for the adjustment transmission member 6 to pass through.

[0057] More specifically, the adjustment transmission member 6 can be three steel cables, connected to the sliding seat 14 at three connection points 61 respectively, and the three steel cables are combined into one and connected to the adjustment member 5. In addition to being a knob, the adjustment member 5 can also receive an adjustment force through a latch or the like.

[0058] The force transmission member 4 is fixedly wound on a reel 8 , and a spiral spring 7 connects the reel 8 and the rotating shaft 11 .

[0059] See also Figure 4 In a preferred embodiment of the present invention, the pivoting method of the connecting member 15 is that a plurality of first notches 121 and a first ring 122 are provided on the fan blade seat 12, and a plurality of second notches 142 and a second ring 143 are provided on the sliding seat 14, and the two ends of the connecting member 15 are respectively passed through by the first ring 122 and the second ring 143, and the connecting member 15 can pivot in the first notch 121 and the second notch 142. In actual implementation, it is not limited to this.

[0060] See also Figure 3 In addition, there is an elastic member 9 disposed on a side of the sliding seat 14 away from the fan blade seat 12 , one end of the elastic member 9 abuts against the base frame 2 , and the other end of the elastic member 9 abuts against the sliding seat 14 .

[0061] See also Figure 2 , Figure 5 and Figure 6 To start using the fitness equipment 100, please use the fitness equipment 100 with Fig. 9 ], the adjusting member 5 can be adjusted first so that the sliding seat 14 is closest to the fan seat 12. At this time, the opening and closing angle A1 between the axis L1 and the reference line L2 is 90 degrees. In actual implementation, the length of the elastic member 9 can be used to set the opening and closing angle A1 to 90 degrees when the adjusting member 5 has not yet received the adjustment force.

[0062] If the vertical distance between the free end 131 (the outermost edge of the fan blade 13 on the reference line L2) and the axis L1 is defined as a rotation radius R1, then when the opening and closing angle A1 is 90 degrees, the fan blade 13 has the largest rotation radius R1.

[0063] See also Figure 1 , Figure 5 and Figure 6 Taking a rowing machine as an example, the user holds the force-applying member 3 by stretching out his arms, and applies an external force to pull the force-applying member 3 toward the user. The external force drives the rotating shaft 11 to rotate via the force transmission member 4, so that the fan blades 13 rotate synchronously around the rotating shaft 11 in the fluid, and the user feels the maximum rotational resistance.

[0064] At this time, the force transmission member 4 drives the reel 8 to twist the spiral spring 7, and the spiral spring 7 stores a second elastic potential energy.

[0065] When the user bends his arm to pull the force-applying member 3 closest to himself, and then holds the force-applying member 3 and stops applying the external force, the spiral spring 7 releases the second elastic potential energy, and the spiral spring 7 drives the reel 8 to idle relative to the rotating shaft 11, thereby resetting the force-applying member 4. The force-applying member 3 is also driven by the force-applying member 4 to move away from the user and reset, so that the user's arm is straightened again.

[0066] The user applies the external force again to pull the force applying member 3 toward the user, and stops applying the external force, and repeats this process to simulate the rowing training action.

[0067] See also Figure 2 , Figure 7 and Figure 8 , when the user thinks Figure 5 When the rotation resistance is too large when the opening and closing angle A1 is 90 degrees, the adjusting member 5 can be operated to apply the adjusting force to the adjusting transmission member 6 .

[0068] If from Figure 5 Starting from the situation where the opening and closing angle A1 is 90 degrees, the adjustment force drives the sliding seat 14 to move in the axial direction D away from the fan blade seat 12. The sliding seat 14 drives the fan blade 13 via the connecting member 15, so that the fan blade 13 swings toward the sliding seat 14 with the pivot end 132 as the fulcrum.

[0069] Since the adjustment transmission member 6 has a plurality of connection points 61 connected to the sliding seat 14 , and in combination with the through holes 21 on the base frame 2 , the movement of the sliding seat 14 can be more stable and smooth.

[0070] As the user operates the adjustment member 5, the opening angle A2 will gradually decrease ( Figure 7 Taking the adjustment to 45 degrees as an example), the turning radius R2 will also decrease as the opening angle A2 decreases, thereby reducing the size of the rotation resistance.

[0071] At this time, the sliding seat 14 and the base frame 2 compress the elastic member 9 together, and the elastic member 9 stores a first elastic potential energy.

[0072] When the user believes that the rotation resistance is appropriate, the user can stop operating the adjustment member 5 to position the sliding seat 14 and continue to Figure 1 The force applying member 3 is used for training.

[0073] When the user believes that the rotational resistance is too small, the user rotates the adjustment member 5 in the reverse direction so that the adjustment force is applied in the reverse direction. The elastic member 9 gradually releases the first elastic potential energy, and the elastic member 9 drives the sliding seat 14 in the axial direction D to approach the fan blade seat 12.

[0074] In actual implementation, the adjustment member 5 may also be configured with a one-button release function, for example, by pressing a button, the adjustment transmission member 6 is directly released, so that the elastic member 9 completely releases the first elastic potential energy and restores the original length, thereby directly resetting the sliding seat 14 to the position where the first elastic potential energy is released and the first elastic potential energy is restored. Figure 5 status for the next operation.

[0075] See also Fig.10 , is to disclose the resistance adjustment structure of the fan blade of the second embodiment of the utility model, which is different from the first embodiment in that: the fan blade 13 of the first embodiment has only a small area near the free end 131 as the blade 134, such as Figure 4 As shown; the fan blade 13a of this embodiment, most of the area is the blade 134a, which can greatly increase the contact area with the fluid.

[0076] The pivoting portion 133a is located on the blade 134a and can also be connected to the connecting member 15a, so that the connecting member 15a can drive the fan blade 13a to swing.

[0077] The resistance adjustment structure of the fan blades of this embodiment, as well as the fitness equipment configured therefrom, and the rest of the structure and operation are the same as those of the first embodiment, and will not be repeated here.

[0078] Please refer to Figure 5 and Figure 7 By driving the sliding seat 14 to move in the axial direction D by the adjustment force, the opening and closing angles A1, A2 of the fan blade 13 can be adjusted steplessly, and the size of the rotational resistance can be adjusted steplessly to meet the training needs of the user.

[0079] Based on the description of the above embodiments, one should be able to fully understand the operation, use and effects of the present invention. The above embodiments are only preferred embodiments of the present invention and should not be used to limit the scope of implementation of the present invention. That is, simple equivalent changes and modifications made according to the content of the present invention are all within the scope of the present invention.

Claims

1. A resistance adjustment structure of a fan blade, characterized in that: Include: A rotating shaft extending along an axial direction; A fan blade seat is fixed to the rotating shaft, and the fan blade seat rotates with the rotation of the rotating shaft; A plurality of fan blades are disposed around the rotating shaft, each of the fan blades comprises a pivot end and a free end opposite to each other, the pivot end is pivotally connected to the fan blade seat, each of the fan blades extends along a reference line between the pivot end and the free end, and each of the fan blades is provided with a pivot portion between the pivot end and the free end; A sliding seat is slidably sleeved on the rotating shaft along the axial direction, and a vertical distance between the free end of the fan blade and the axis of the rotating shaft is defined as a rotation radius; A plurality of connecting members, one end of each connecting member is pivotally connected to the sliding seat, and the other end of each connecting member is pivotally connected to the pivoting portion corresponding to each fan blade.

2. The blade resistance adjustment structure according to claim 1, characterized in that: Each of the fan blades comprises a blade and a blade connecting member. The blade is fixed to one end of the blade connecting member. The other end of the blade connecting member is pivotally connected to the fan blade seat. The pivoting portion is located on the blade connecting member.

3. The resistance adjustment structure of the fan blade according to claim 2, characterized in that: The pivoting part is a first through hole, each connecting member has a second through hole, and a plurality of screws pass through the first through hole and the second through hole respectively to pivot each connecting member to the pivoting part, and the diameter of the second through hole is larger than the outer diameter of the screw.

4. The blade resistance adjustment structure according to claim 1, characterized in that: There is a covering member, in which the rotating shaft, the fan blade seat, the fan blade and the sliding seat are all arranged, and the rotating shaft is rotatably fixed to the covering member. The covering member contains a fluid, which is a gas or a liquid.

5. The resistance adjustment structure of the fan blade according to claim 4, characterized in that: The sliding seat extends out of the covering member, and a cap body is provided at one end of the sliding seat away from the fan blade seat, a bearing is provided between the cap body and the sliding seat, and the covering member is recessed with a receiving groove corresponding to the cap body; when the sliding seat moves in the axial direction, the cap body enters or leaves the receiving groove.

6. A fitness equipment comprising a fan blade resistance adjustment structure as claimed in any one of claims 1 to 5, characterized in that: This fitness equipment also includes: A base frame, on which the resistance adjustment structure of the fan blade is arranged; A force applying member, movably coupled to the base frame, the force applying member is used to receive external force; a force transmission member, one end of which is connected to the force applying member, and the other end of which is directly or indirectly connected to the rotating shaft to drive the rotating shaft to rotate; An adjusting member is directly or indirectly connected to the sliding seat, and the adjusting member is used to receive an adjusting force.

7. The fitness equipment according to claim 6, characterized in that: The adjusting member is connected to the sliding seat via an adjusting transmission member, and the adjusting transmission member has a plurality of connection points connected to the sliding seat, the connection points surround the rotating shaft, and the base frame has at least one through hole for the adjusting transmission member to pass through.

8. The fitness equipment according to claim 6, characterized in that: An elastic member is arranged on a side of the sliding seat away from the fan blade seat, one end of the elastic member abuts against the base, and the other end of the elastic member abuts against the sliding seat; when the adjustment force drives the sliding seat away from the fan blade seat in the axial direction, the sliding seat and the base compress the elastic member, and the elastic member can store a first elastic force potential energy; when the adjustment force is removed or applied in reverse, the elastic member releases the first elastic force potential energy, and the elastic member can drive the sliding seat to move in the axial direction to reset or approach the fan blade seat.

9. The fitness equipment according to claim 6, characterized in that: The force transmission member is fixedly wound on a reel, and a spiral spring connects the reel and the rotating shaft; when the external force drives the rotating shaft to rotate via the force transmission member, the force transmission member drives the reel to twist the spiral spring, and the spiral spring can store a second elastic potential energy; when the external force is removed, the spiral spring releases the second elastic potential energy, and the spiral spring can drive the reel to idle relative to the rotating shaft, thereby resetting the force transmission member.

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