JP2018063016A - Fluid valve - Google Patents

Abstract

A fluid valve capable of easily replenishing grease on a sliding surface is provided. A flow rate adjusting valve (fluid valve) 70 is formed at an inlet 71A for flowing hot water (fluid) into the inner space, an outlet 71B for flowing hot water from the inner space, and a peripheral side surface and formed on the inner peripheral surface. A cylindrical holder 71 having a through hole 71 </ b> C for supplying grease and the holder 71 are accommodated in the holder 71 so as to be slidable along the inner peripheral surface of the holder 71. The outlet 71 </ b> B is opened and closed by relative rotation with the holder 71. And a cylinder 72. [Selection] Figure 7

Description

  The present invention relates to a fluid valve.

  Patent Document 1 discloses a conventional fluid valve. This fluid valve includes a pair of disc valve bodies formed in a disk shape. The pair of disc valve bodies are slidably coaxially overlapped and installed in the valve case. One disk valve body is fixed to the valve case, and the other disk valve body is rotatably arranged around an axis perpendicular to the disk surface. The pair of disc valve bodies are each formed with a water passage hole penetrating in the thickness direction of the disk. And the recessed part for grease filling is provided in site | parts other than a water flow hole among the disk surfaces of one disc valve body, and it fills with grease. With such a configuration, the fluid valve of Patent Document 1 can achieve smooth sliding with reduced sliding resistance between the sliding surfaces of the pair of disc valve bodies. Further, since the grease filling recess is filled with a large amount of grease, the grease can be present between the sliding surfaces of the disc valve body over a long period of time.

JP-A-7-224951

  However, even in the case of the fluid valve of Patent Document 1, the grease between the sliding surfaces will eventually flow out or evaporate. In such a case, it is conceivable that the grease is filled again between the sliding surfaces. However, in the configuration as in Patent Document 1, in order to replenish the grease between the paired disc valve bodies, the grease is once disassembled. The work was complicated.

  This invention is made | formed in view of the said conventional condition, Comprising: It is the problem which should be solved to provide the fluid valve | bulb which can replenish the grease of a sliding surface easily.

A fluid valve according to the present invention is a cylindrical holder having an inflow port through which fluid flows into the inner space, an outflow port through which fluid flows out from the inner space, and a through-hole formed on the peripheral side surface for supplying grease to the inner peripheral surface. When,
A cylinder that is accommodated in the holder so as to be slidable along an inner peripheral surface of the holder, and that opens and closes the outlet by relative rotation with the holder;
It is characterized by providing.

  In this fluid valve, a through hole for supplying grease is formed on the peripheral side surface of the holder whose inner peripheral surface is a sliding surface with the outer peripheral surface of the cylinder. For this reason, grease can be supplied to a sliding surface, without extracting a cylinder by filling a through-hole with grease from the outer peripheral surface of a holder.

  Therefore, the fluid valve of the present invention can easily replenish the sliding surface with grease.

It is a perspective view which shows the water faucet provided with the flow regulating valve (fluid valve) concerning Example 1. It is a front view which shows the water faucet provided with the flow regulating valve (fluid valve) concerning Example 1. It is a side view which shows the water faucet provided with the flow regulating valve (fluid valve) concerning Example 1. It is an expanded sectional view showing a discharge pipe tip part of a water faucet provided with a flow control valve (fluid valve) concerning Example 1. 1 is a perspective view showing a flow rate adjustment valve (fluid valve) according to Embodiment 1. FIG. 1 is a side view showing a flow rate adjustment valve (fluid valve) according to Embodiment 1. FIG. 1 is a cross-sectional view showing a flow rate adjustment valve (fluid valve) according to Embodiment 1. FIG. It is a bottom view which shows the flow regulating valve (fluid valve) which concerns on Example 1. FIG. It is a figure for demonstrating the effect | action of the flow regulating valve (fluid valve) which concerns on Example 1, and is a figure which shows the state removed from the water tap. FIG. 6 is a diagram for explaining a flow rate adjustment valve (fluid valve) according to a second embodiment.

  A preferred embodiment of the present invention will be described.

  In the fluid valve of the present invention, a plurality of the through holes may be arranged in the axial direction of the holder. In this case, grease can be spread over a wide range of sliding surfaces.

  In the fluid valve of the present invention, the through hole may be formed to extend in a slit shape in the axial direction of the holder. In this case, grease can be spread over a wide range of sliding surfaces.

In the fluid valve of the present invention, the outlet is formed on a peripheral side surface of the holder,
The cylinder has an opening on the peripheral side surface that communicates with the outflow port by relative rotation with the holder,
The through hole may be formed at a position closer to the end in the axial direction than a portion corresponding to the opening on the peripheral side surface of the holder.

  In this case, grease can be filled into a through-hole formed in a portion of the peripheral side surface of the holder that does not overlap with the opening of the cylinder. For this reason, compared with the through-hole formed in the site | part which overlaps with opening of the surrounding side surface of a holder, the outflow of the filled grease can be suppressed. As a result, smooth sliding of the sliding surface over a longer period can be realized.

  Next, an embodiment embodying the fluid valve of the present invention will be described with reference to the drawings. In the following embodiments, a flow rate adjusting valve is illustrated as a fluid valve according to the present invention. In the following description, for convenience, the vertical direction is the vertical direction.

<Example 1>
The flow control valve 70 of Example 1 is provided in the faucet 1 shown in FIGS. The faucet 1 is a hot water mixing faucet that discharges hot water and hot water mixed with hot water and water, and the flow rate adjustment valve 70 is a fluid valve that adjusts the discharge amount of hot water. The faucet 1 is a wall-mounted faucet. The faucet 1 includes a faucet body 10, a discharge pipe 20, a hot water discharge port 30, a hot water discharge port 40, a lever type handle 50 and a rotary handle 60.

  The faucet body 10 has a substantially rectangular parallelepiped shape that is long in the horizontal direction. A water supply pipe 2 and a hot water supply pipe 3 are connected to both ends of the back surface of the faucet body 10. The water supply pipe 2 and the hot water supply pipe 3 supply water and hot water to the faucet body 10 from the piping in the wall surface, respectively. The hot water supply pipe 3 can supply hot water of about 95 ° C. at the maximum. The faucet body 10 incorporates a mixing valve (not shown) that mixes and flows out water and hot water from the water supply pipe 2 and the hot water supply pipe 3.

  The discharge pipe 20 is pivotally connected to the faucet body 10 at its base end. The discharge pipe 20 is formed in a substantially circular shape in cross section, and is formed in a substantially L shape as a whole. The discharge pipe 20 has a linear portion 21 extending linearly. The linear portion 21 extends in the horizontal direction. The discharge pipe 20 is rotatable about a front front of the faucet body 10 within a range of about 180 ° within a horizontal plane. The discharge pipe 20 has a hot water flow passage 22 through which hot water flows through the mixing valve of the faucet body 10 and a hot water flow passage 23 through which hot water from the hot water supply pipe 3 flows. That is, the discharge pipe 20 has two flow paths through which hot water and hot water are separately distributed. The discharge pipe 20 has a cover member 24. The cover member 24 is made of a heat resistant resin. The hot water flow passage 22 and the hot water flow passage 23 are arranged in the cover member 24.

  The hot water flow passage 23 is formed with a pipe portion 23A and a valve case 23B. The tube portion 23A is formed in a tubular shape. The tube portion 23 </ b> A extends along the central axis C of the linear portion 21. The valve case 23B is formed in a cylindrical shape with one end closed. The valve case 23 </ b> B is arranged concentrically with the central axis C of the linear portion 21. The valve case 23 </ b> B is connected to the pipe portion 23 </ b> A with the opening end side facing the distal end side of the discharge pipe 20. Specifically, as shown in FIG. 4, a communication hole 23C is formed on the closed end side of the valve case 23B, and the distal end portion of the pipe portion 23A is inserted into the communication hole 23C so that the liquid is obtained by brazing or the like. Closely connected. The space in the pipe portion 23A and the space in the valve case 23B communicate with each other through the communication hole 23C. A communication hole 23D is formed on the peripheral side surface of the valve case 23B. The communication hole 23D communicates the space in the valve case 23B with the hot water discharge port 40.

  The hot water outlet 30 is formed in the discharge pipe 20 and discharges hot water. The hot water discharge port 40 is formed in the discharge pipe 20 and discharges hot water. As shown in FIG. 3, the hot water outlet 30 and the hot water outlet 40 are formed so as to protrude from the discharge pipe 20 with different amounts of protrusion. The hot water discharge port 30 and the hot water discharge port 40 are each provided in a form protruding downward from the tip of the linear portion 21 of the discharge pipe 20. The lower end of the hot water discharge port 40 is formed to extend below the lower end of the hot water discharge port 30. That is, the hot water discharge port 40 protrudes downward with a larger protrusion amount than the hot water discharge port 30. The hot water discharge port 30 and the hot water discharge port 40 are arranged such that the hot water discharge port 30 is the base end side of the discharge pipe 20 and the hot water discharge port 40 is the front end side of the discharge pipe 20. They are provided adjacent to each other along the exit direction.

  The lever handle 50 is an operation handle that adjusts the mixing ratio and discharge amount of hot and cold water by the mixing valve of the faucet body 10. The lever-type handle 50 is rotatably provided in the longitudinal center of the upper surface of the faucet body 10. The lever-type handle 50 adjusts the amount of hot water discharged by a rotation around the horizontal axis, that is, a rotation operation in which the tip of the lever-type handle 50 moves up and down. The lever-type handle 50 adjusts the mixing ratio of hot and cold water by rotating around the vertical axis, that is, by rotating the tip of the lever-type handle 50 horizontally.

  The rotary handle 60 performs a water discharge operation for discharging hot water. The rotary handle 60 is a handle for operating the flow rate adjusting valve 70 and adjusts the discharge amount of hot water discharged from the hot water discharge port 40. The water discharge operation by the rotary handle 60 is a rotation operation around the same axis as the central axis C of the linear portion 21 of the discharge pipe 20 having a cylindrical shape. That is, the rotary handle 60 is provided so as to be rotatable around a central axis C as a predetermined rotary shaft, and the flow rate adjusting valve 70 is operated by this rotary operation. Further, the rotary handle 60 is brought into a locked state in which a rotary operation that is a water discharge operation is locked by a lock mechanism. This locked state is switched to the unlocked state by performing an unlock operation. This unlocking operation is an operation of moving the rotary handle 60 in the direction of the central axis C, and is a pulling operation of the locked rotary handle 60 in the direction of the central axis C. That is, the rotary handle 60 is provided so as to be movable in the direction of the central axis C of the linear portion 21 of the discharge pipe 20.

  The flow rate adjustment valve 70 is a valve that adjusts the discharge amount of hot water discharged from the hot water discharge port 40 in accordance with the turning operation of the rotary handle 60. The flow rate adjusting valve 70 is removably accommodated in the distal end portion of the discharge pipe 20. As shown in FIG. 4, the flow regulating valve 70 is accommodated in the inner space of the valve case 23B. Specifically, the flow rate adjusting valve 70 is inserted into the space inside the valve case 23B from the opening end of the valve case 23B so that the opening end faces the base end side of the discharge pipe 20, and is fixed by the retaining ring R. ing. The flow regulating valve 70 has a bottomed cylindrical shape as a whole, and is accommodated coaxially with the valve case 23B in a bottomed cylindrical valve case 23B. As shown in FIGS. 5 to 8, the flow rate adjustment valve 70 includes a holder 71 and a cylinder 72. The flow rate adjustment valve 70 rotates relative to the holder 71 by the rotation operation of the rotary handle 60, and adjusts the discharge amount of hot water discharged from the hot water discharge port 40 according to the rotation amount. .

  The holder 71 is formed in a cylindrical shape. An inlet 71 </ b> A is formed on one end surface of the holder 71. The inflow port 71 </ b> A opens toward the upstream hot water flow passage 23, and flows hot water flowing through the hot water flow passage 23 into the flow rate adjustment valve 70. An outlet 71 </ b> B is formed on the peripheral side surface of the holder 71. The outlet 71 </ b> B opens toward the hot water flow passage 23 on the downstream side, and the hot water in the flow rate adjusting valve 70 flows out to the hot water flow passage 23 on the downstream side. That is, the flow rate adjusting valve 70 flows in the fluid in the axial direction from the inflow port 71A that opens to the upstream side, and flows out in the radial direction from the outflow port 71B that opens to the downstream side. In the state where the flow rate adjusting valve 70 is accommodated in the valve case 23B, the inflow port 71A and the outflow port 71B communicate with the inflow port 71A opening to the communication hole 23C on the discharge pipe 20 base end side. It opens and communicates with the lower communication hole 23D.

  A through hole 71 </ b> C is formed on the peripheral side surface of the holder 71. The through hole 71 </ b> C is filled with grease, and the grease is supplied between the inner peripheral surface of the holder 71 serving as a sliding surface and the outer peripheral surface of the cylinder 72. In the present embodiment, a plurality of through holes 71C are formed. The plurality of through holes 71 </ b> C are arranged in the axial direction of the holder 71. The through hole 71 </ b> C is also formed at a position closer to the end in the axial direction than the portion corresponding to the opening 72 </ b> A on the peripheral side surface of the holder 71.

  A lock member 73 is attached to the end surface of the holder 71 opposite to the inlet 71A side. The lock member 73 is a member constituting a lock mechanism that locks the rotation operation by the rotary handle 60. Further, a second inflow port 71D is formed on the peripheral side surface opposite to the peripheral side surface where the outflow port 71B of the holder 71 is formed. The second inflow port 71D is an inflow port capable of inflow of fluid from the radial direction. The flow rate adjusting valve 70 can allow fluid to flow in from at least one of the inflow port 71A formed in the axial direction and the second inflow port 71D formed in the radial direction.

  The cylinder 72 is formed in a bottomed cylindrical shape. The cylinder 72 is accommodated in the holder 71 so as to be slidable on the inner peripheral surface of the holder 71. The cylinder 72 opens and closes the outlet 71 </ b> B by relative rotation with the holder 71. The cylinder 72 is rotatably provided along the inner peripheral surface of the holder 71. The rotation of the cylinder 72 is rotation around the central axis C of the discharge pipe 20. That is, the cylinder 72 and the holder 71 are provided so as to be relatively rotatable around the central axis C.

  An opening 72 </ b> A is formed on the peripheral side surface of the cylinder 72. The opening 72 </ b> A communicates with the outlet 71 </ b> B of the holder 71 by relative rotation with the holder 71 of the cylinder 72. The opening 72A is formed in a flat teardrop shape. The opening 72A communicates with a portion corresponding to the narrow portion of the teardrop shape at the start of communication with the outflow port 71B. Further, an operating shaft portion 72B is provided at the end of the cylinder 72 on the closing side. The operation shaft portion 72 </ b> B extends through the other end of the holder 71 and the lock member 73 and extends in the distal end direction of the discharge pipe 20. The rotary handle 60 is connected to the operation shaft portion 72B.

  In addition, the 2nd opening (not shown) is formed in the surrounding side surface opposite to the surrounding side surface in which opening 72A of cylinder 72 was formed. The second opening is an opening corresponding to the second inflow port 71 </ b> D of the holder 71. The second opening communicates with the second inflow port 71D prior to the communication between the opening 72A and the outflow port 71B during the rotation operation. Further, the second opening slightly communicates with the second inlet 71D even when the flow rate adjustment valve 70 is fully closed.

  Further, in this embodiment, the outlet 71B is formed in an outlet member 71E provided separately from the holder 71. The outlet member 71E is a peripheral side surface of the holder 71 via a seal member 71F. (See FIGS. 4 to 8). The seal member 71F is in liquid-tight and slidable contact with the outer peripheral surface of the cylinder 72. Further, when the flow rate adjusting valve 70 is accommodated in the valve case 23B, the seal member 71F comes into liquid-tight contact with the inner peripheral surface of the valve case 23B at the periphery of the communication hole 23D.

  Next, the operation of the flow rate adjustment valve 70 of the first embodiment configured as described above will be described. In the faucet 1, when performing a water discharge operation for discharging hot water, the rotary handle 60 is operated. By this turning operation of the turning handle 60, the cylinder 72 of the flow rate adjusting valve 70 is turned relative to the holder 71, and an amount of hot water corresponding to the turning amount is discharged from the hot water discharge port 40.

  At this time, in the flow rate adjusting valve 70, the outer peripheral surface of the cylinder 72 slides with respect to the inner peripheral surface of the holder 71. The sliding surfaces of the cylinder 72 and the holder 71 are sufficiently supplied with the grease filled in the through hole 71C and rotate smoothly. In addition, since a plurality of through holes 71C are arranged in the axial direction of the peripheral side surface of the holder 71, grease is supplied over a wide range of the sliding surface, thereby realizing good sliding. Further, the through hole 71 </ b> C is formed at a position closer to the end in the axial direction than the portion corresponding to the opening 72 </ b> A on the peripheral side surface of the holder 71. Since the grease supplied to this part does not come into direct contact with the circulating hot water, it is difficult to flow out. Therefore, the flow regulating valve 70 is maintained in a good lubrication state over a long period.

  At this time, the opening 72 </ b> A of the cylinder 72 communicates with the outlet 71 </ b> B of the holder 71, and hot water flows through the hot water flow passage 23 on the downstream side of the flow rate adjustment valve 70. The opening 72A communicates with a portion corresponding to the narrow portion of the teardrop shape at the start of communication with the outflow port 71B. Thereby, a rapid change in flow rate is suppressed.

  Hot water discharged from the hot water discharge port 40 is discharged at a discharge amount corresponding to the operation amount of the rotation operation of the rotary handle 60. In the flow rate adjusting valve 70, the cylinder 72 only rotates relative to the holder 71 by the rotation of the rotating handle 60, and no displacement in the axial direction occurs. For this reason, the axial displacement due to the rotation of the rotary handle 60 does not occur, and the aesthetic appearance is not impaired.

  When smooth rotation of the rotary handle 60 becomes difficult, the grease filled in the through hole 71C may be lost or evaporated, so that the grease is replenished. In this case, first, the rotary handle 60 and the retaining ring R are removed. Thereafter, as shown in FIG. 9, the flow rate adjusting valve 70 is taken out from the valve case 23B. Thereby, the outer peripheral surface of the holder 71 is exposed, and grease can be easily replenished to the through hole 71C.

  In the normal state, the rotary handle 60 is in a locked state in which the rotary operation is locked. For this reason, hot water is prevented from being discharged by an unintended operation or an erroneous operation. In order to perform a rotation operation that is a water discharge operation with the rotation handle 60, a pull operation that is a lock release operation is performed to set the lock release state. As a result, the lock is released and the turning operation is enabled.

  Further, since the rotary handle 60 is provided at the tip of the discharge pipe 20, it is safe for the operator to perform a rotary operation before the hot water to be discharged. Further, the rotary handle 60 is formed in a columnar shape having substantially the same diameter as the outer diameter of the discharge pipe 20, and its central axis is coaxial with the central axis C of the linear portion 21 of the discharge pipe 20. Since it is arrange | positioned at the front-end | tip part of the linear part 21, the neat beauty is exhibited.

  Further, the hot water discharge port 40 is provided at a position closer to the tip of the discharge pipe 20 than the hot water discharge port 30, and hot water is discharged from a position closer to the rotary handle 60 disposed at the tip of the discharge pipe 20. .

  Moreover, the hot water outlet 30 and the hot water outlet 40 are provided separately. Thereby, for example, even when hot water is discharged immediately after hot water is discharged, the remaining hot water is not unexpectedly discharged. Moreover, since the lower end of the hot water discharge port 30 is located above the lower end of the hot water discharge port 40, the difference in the discharge position from the hot water discharge port 40 through which hot water is discharged can be easily recognized.

As described above, the flow rate adjusting valve 70 of the present embodiment is formed in the inlet 71A for flowing hot water into the inner space, the outlet 71B for flowing hot water from the inner space, and the peripheral side surface, and grease is applied to the inner peripheral surface. A cylindrical holder 71 having a through-hole 71C to be supplied;
A cylindrical cylinder 72 with a bottom that is accommodated in the holder 71 so as to be slidable along the inner peripheral surface of the holder 71 and opens and closes the outlet 71B by relative rotation with the holder 71;
It has.

  In the flow rate adjusting valve 70, a through hole 71 </ b> C for supplying grease is formed on the peripheral side surface of the holder 71 whose inner peripheral surface is a sliding surface with the outer peripheral surface of the cylinder 72. For this reason, by filling the through hole 71 </ b> C with grease from the outer peripheral surface of the holder 71, the grease can be supplied to the sliding surface without removing the cylinder 72.

  Therefore, the flow rate adjusting valve 70 can easily replenish the sliding surface with grease.

  Further, since the plurality of through holes 71C are arranged in the axial direction of the holder 71, grease can be spread over a wide range of sliding surfaces.

  The outflow port 71B is formed on the peripheral side surface of the holder 71, and the cylinder 72 forms an opening 72A communicating with the outflow port 71B on the peripheral side surface by relative rotation with the holder 71. The through hole 71 </ b> C is formed at a position closer to the end in the axial direction than the portion corresponding to the opening 72 </ b> A on the peripheral side surface of the holder 71.

  With such a configuration, the flow rate adjustment valve 70 according to the present embodiment can fill the through hole 71 </ b> C formed in a portion of the peripheral side surface of the holder 71 that does not overlap the opening 72 </ b> A of the cylinder 72 with grease. For this reason, compared with the through-hole 71C formed in the site | part which overlaps with opening 72A of the surrounding side surface of the holder 71, the outflow of the filled grease can be suppressed. As a result, smooth sliding of the sliding surface over a longer period can be realized.

<Example 2>
The flow rate adjustment valve 270 which is a fluid valve of the second embodiment is different from the flow rate adjustment valve 70 of the first embodiment in the form of the formation of the through hole 271C. As shown in FIG. 10, the flow rate adjusting valve 270 includes a holder 271, and the holder 271 has a through hole 271 </ b> C that extends in the shape of a slit in the axial direction. Also in this case, the same effects as those of the first embodiment are obtained.
<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 and 2, the flow rate adjustment valve as a fluid valve applied to the hot water mixing faucet is illustrated, but the present invention is not limited to this. The fluid valve may be applied to a single water tap that discharges hot water or water.
(2) In the first and second embodiments, the flow rate adjustment valve is exemplified as the fluid valve. However, a so-called on-off valve that does not perform strict flow rate adjustment may be used.
(3) In the first and second embodiments, as an inflow mode of the fluid into the cylindrical fluid valve, the mode in which the fluid is introduced from the inflow port formed in the axial direction is illustrated, but the flow in the radial direction is illustrated. The form which flows in the fluid from the 2nd inflow port which is an inlet_port | entrance may be sufficient.
(4) In the first and second embodiments, the form in which the outlet is formed by providing the outlet member separate from the holder is illustrated. However, the inlet may be formed directly on the holder.

DESCRIPTION OF SYMBOLS 1 ... Water faucet 2 ... Water supply pipe 3 ... Hot water supply pipe 10 ... Water faucet body 20 ... Discharge pipe 21 ... Linear part 22 ... Hot water flow passage 23 ... Hot water flow passage 23A ... Pipe part 23B ... Valve case 23C ... Communication hole 23D ... Communication hole 24 ... Cover member 30 ... Hot water discharge port 40 ... Hot water discharge port 50 ... Lever type handle 60 ... Rotary handle 70,270 ... Flow rate adjusting valve (fluid valve)
71, 271 ... Holder 71A ... Inlet 71B ... Outlet 71C, 271C ... Through hole 71D ... Second inlet 71E ... Outlet member 71F ... Sealing member 71G ... Outlet opening 72 ... Cylinder 72A ... Opening 72B ... Operation shaft Part 73 ... Lock member C ... Center axis of linear part R ... Retaining ring

Claims (4)

A cylindrical holder having an inflow port through which fluid flows into the inner space, an outflow port through which fluid flows out from the inner space, and a through-hole formed in the peripheral side surface for supplying grease to the inner peripheral surface;
A cylinder that is accommodated in the holder so as to be slidable along an inner peripheral surface of the holder, and that opens and closes the outlet by relative rotation with the holder;
A fluid valve comprising:   The fluid valve according to claim 1, wherein a plurality of the through holes are arranged in the axial direction of the holder.   The fluid valve according to claim 1, wherein the through hole extends in a slit shape in the axial direction of the holder. The outlet is formed on the peripheral side of the holder;
The cylinder has an opening on the peripheral side surface that communicates with the outflow port by relative rotation with the holder,
The said through-hole is formed in the position near the edge part of an axial direction rather than the site | part corresponding to the said opening among the surrounding side surfaces of the said holder, The Claim 1 thru | or 3 characterized by the above-mentioned. The fluid valve described.

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