CN211874791U - Fan head rotating structure with auxiliary head lifting function and fan - Google Patents

Abstract

The utility model discloses a fan head revolution mechanic and fan with supplementary function of lifting one's head belongs to electrical apparatus technical field, for solving the poor scheduling problem design of current fan head revolution mechanic intensity. The utility model discloses fan head revolution mechanic includes that interior relative rotation piece, cover establish including relative rotation piece periphery on outer relative rotation piece and torsional spring, including the both ends of torsional spring set up respectively relative rotation piece and outer relative rotation piece including, the torsional spring is to interior relative rotation piece and outer relative rotation piece apply along circumferencial tangential direction's torsion, torsion provides the auxiliary force that upwards lifts for fan head back seat. The utility model discloses the torsional spring of fan head revolution mechanic and fan with supplementary new line function can inwards rotate the piece relatively and apply along circumference tangential direction's torsion in order to make the fan head back seat upwards lift with outer relative rotating member, and weight is little, with low costs, can realize lifting of fan head subassembly by auxiliary motor, prolongs the life of new line motor.

Description

Fan head rotating structure with auxiliary head lifting function and fan

Technical Field

The utility model relates to the technical field of electrical apparatus, especially, relate to a fan head revolution mechanic and including this fan head revolution mechanic with supplementary new line function.

Background

A fan is an electrical appliance for making air into an air flow. In order to expand the air supply range, the fan has an automatic head raising function in addition to an automatic head swinging function. In order to realize the automatic head raising function, a set of head raising motor and gear structure is required to be added at the rear seat of the fan. The fan head assembly formed by the structures such as the fan blades, the fan motor, the front cover and the rear cover of the fan is large in weight, so that the torque is large, the head raising function cannot be met by the output torque of the head raising motor alone, and the head raising motor cannot lift the fan head assembly or is short in service life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a more durable fan head revolution mechanic.

Another object of the present invention is to provide a fan with a longer service life of the motor.

To achieve the purpose, on one hand, the utility model adopts the following technical scheme:

a fan head rotating structure having an auxiliary head lifting function, comprising: the inner relative rotating part is fixedly connected to one of the bracket and the fan head rear seat; the outer relative rotating part is sleeved on the periphery of the inner relative rotating part and is fixedly connected to the other one of the bracket and the fan head rear seat; the two ends of the torsion spring are respectively arranged on the inner relative rotating piece and the outer relative rotating piece; when the fan head rear seat moves upwards, the torsion spring applies torsion force along the circumferential tangential direction to the inner relative rotating piece and the outer relative rotating piece, and the torsion force provides an auxiliary force for lifting upwards for the fan head rear seat.

In particular, the axis of the inner relatively rotatable member coincides with the axis of the outer relatively rotatable member.

Particularly, a through hole is formed in the middle of the outer relative rotating piece, and the inner relative rotating piece penetrates through the through hole; the middle part of the inner relative rotating piece is concave inwards to form a concave cavity, and a limiting ring groove is arranged in the middle of the concave cavity; the spiral pipe embedding of torsional spring just is located in the cavity the periphery of spacing annular, be provided with hooked spacing portion on the outer relative rotation piece, one of second torque arm and first torque arm of torsional spring is followed in the opening part of spacing annular penetrates in the spacing annular, another is located in the recess of spacing portion or be located on the extension line of recess.

Particularly, the middle part of the concave cavity is also provided with a convex column, the convex column is positioned in the limit ring groove, the tail ends of the second torsion arm and the first torsion arm form a binding hook, and the binding hook is buckled on the convex column.

Particularly, the bracket comprises a U-shaped bracket main body and two connecting pieces respectively arranged at two ends of the bracket main body, and one of the inner relative rotation piece and the outer relative rotation piece is arranged on the bracket main body through the connecting pieces.

On the other hand, the utility model adopts the following technical scheme:

a fan comprises a support, a fan head rear seat and the fan head rotating structure, wherein an inner relative rotating piece is fixedly connected to one of the support and the fan head rear seat, and an outer relative rotating piece is fixedly connected to the other.

Particularly, the fan further comprises a fan head assembly, a swinging motor, a limiting assembly and a control module, wherein the swinging motor is used for driving the fan head assembly to swing left and right, when the fan head assembly swings to a maximum set angle, the limiting assembly is triggered, the limiting assembly sends an instruction to the control module, and the control module receives the instruction and then controls the swinging motor to rotate reversely.

Particularly, the limiting assembly comprises a magnet and a reed pipe, the fan further comprises a base and a fan head supporting rod arranged on the base, one of the magnet and the reed pipe is arranged on the base, and the other one of the magnet and the reed pipe is arranged on the fan head supporting rod.

Particularly, the base comprises a base and a base upper cover which are buckled with each other, and one of the magnet and the reed pipe is arranged on the base upper cover; and/or, the fan also comprises a transmission disc, the transmission disc is fixed on the fan head supporting rod, and the other one of the magnet and the reed pipe is arranged on the transmission disc.

Particularly, the fan further comprises a limiting rib and a limiting block, one of the limiting rib and the limiting block is arranged on the base, and the other limiting rib and the limiting block are arranged on the fan head supporting rod.

The utility model discloses possess following beneficial effect:

1. the two ends of the torsional spring of the fan head rotating structure of the utility model are respectively arranged on the inner relative rotating part and the outer relative rotating part, when the fan head rear seat moves upwards, the torsional spring can apply torsion along the circumferential tangential direction to the inner relative rotating part and the outer relative rotating part to assist the lifting of the fan head rear seat upwards, the weight is small, the cost is low, the motor can be assisted to realize the lifting of the fan head assembly, and the service life of the motor is prolonged; the outer relative rotation piece is established including on the periphery of relative rotation piece, and the power of applying force that the torsional spring was exerted can not make outer relative rotation piece and interior relative rotation piece keep away from each other, and outer relative rotation piece and interior relative rotation piece can not warp or take place the displacement because of the torsion of torsional spring.

2. The fan capable of controlling the swing angle of the fan head comprises the limiting component, the limiting component can send an instruction to the control module when the fan head component swings to the maximum set angle, and the control module receives the instruction and then controls the swing motor to finish the set rotation time in advance and start to rotate reversely.

3. The utility model discloses the fan includes foretell fan head revolution mechanic, and the torsional spring can assist the lift-up motor to realize lifting of fan head subassembly, avoids the lift-up motor to be damaged because of lifting up heavy fan head subassembly for a long time, has prolonged the life of lift-up motor.

Drawings

Fig. 1 is a schematic structural diagram of a fan according to an embodiment of the present invention;

fig. 2 is a schematic view of a combination structure of a bracket and a fan head rear seat according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a fan head rear seat according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fan head rotation structure according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a torsion spring according to an embodiment of the present invention;

FIG. 6 is a schematic structural view of an outer rotatable counter-element according to an embodiment of the present invention;

FIG. 7 is a schematic structural view of the inner rotatable counter-rotating member and the torsion spring after installation according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a limiting assembly according to an embodiment of the present invention.

In the figure:

1. an inner counter-rotating member; 2. a support; 3. a fan head rear seat; 4. an outer opposing rotating member; 5. a torsion spring; 6. a base; 7. a fan head supporting rod; 9. a drive plate; 11. a limiting ring groove; 12. a concave cavity; 13. a convex column; 21. a stent body; 22. a connecting member; 31. mounting a through hole; 41. a limiting part; 42. a groove; 43. a through hole; 51. a first torque arm; 52. a second torque arm; 53. a spiral tube; 54. binding a hook; 61. a base upper cover; 62. a base; 81. a magnet; 82. a reed switch; 83. limiting ribs; 84. a limiting block; 91. fan blades; 92. a fan front cover; 93. a fan rear cover; 100. a fan head assembly.

Detailed Description

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

The embodiment discloses a fan head rotating structure with an auxiliary head lifting function and a fan comprising the same. Specifically, as shown in fig. 1 and 2, the fan includes a support 2, a fan head rear seat 3, and a fan head rotating structure, the fan head rear seat 3 is mounted on the support 2, and the fan head rotating structure is disposed in the fan head rear seat 3. Fan head revolution mechanic includes interior relative rotation piece 1, outer relative rotating member 4 and torsional spring 5, and interior relative rotation piece 1 fixed connection is on one in support 2 and fan head back seat 3 two, and outer relative rotating member 4 fixed connection is on another, and the both ends of torsional spring 5 set up respectively including on relative rotation piece 1 and outer relative rotating member 4.

The assembly is carried out by giving a precompression angle to the torsion spring 5, the torsion spring 5 applies torsion to the inner relative rotating piece 1 and the outer relative rotating piece 4 respectively, the torsion extends along the circumferential tangent direction of the inner relative rotating piece 1 and the outer relative rotating piece 4 respectively, when the fan head rear seat 3 moves upwards, the torsion provides an auxiliary force for lifting the fan head rear seat 3 upwards, the weight is small, the cost is low, the lifting of the fan head assembly 100 can be realized by assisting the head lifting motor, and the service life of the head lifting motor is prolonged. Moreover, the outer relative rotating piece 4 is sleeved on the periphery of the inner relative rotating piece 1, the force exerted by the torsion spring 5 cannot enable the outer relative rotating piece 4 and the inner relative rotating piece 1 to be away from each other, so that the outer relative rotating piece 4 and the inner relative rotating piece 1 cannot deform or displace due to the torsion of the torsion spring 5, and the service life of the fan head rotating structure is prolonged. The fan head assembly 100 includes a fan head rear seat 3, a fan blade 91, a fan motor (not shown), a fan front cover 92 and a fan rear cover 93, the fan rear cover 93 is mounted on the fan head rear seat 3, the fan front cover 92 is fastened on the fan rear cover 93, the fan blade 91 is disposed in a cavity formed by the fan front cover 92 and the fan rear cover 93, the fan motor is mounted in the fan head rear seat 3, and the fan blade 91 is mounted on an output shaft of the fan motor.

The pre-compression angle of the torsion spring 5 is adjusted according to specific torque requirements, and is not limited herein, so that the torsion of the torsion spring 5 can be smoothly released when the fan head assembly 100 is lifted upwards, and the head-up motor can be assisted to pull the fan head assembly 100 upwards. In order to further make the movement of the fan head assembly 100 smoother and avoid wasting the torsion force of the torsion spring 5, the axis of the inner relative rotating member 1 coincides with the axis of the outer relative rotating member 4.

As shown in fig. 2 to 4, the stand 2 includes a U-shaped stand main body 21 and two connection members 22 respectively provided at both ends of the stand main body 21, and one of the inner relative rotating member 1 and the outer relative rotating member 4 is mounted on the stand main body 21 through the connection member 22. Specifically, the connecting member 22 may be a cylindrical structure with a snap or bolt hole, and one of the inner relative rotating member 1 and the outer relative rotating member 4 is fixedly connected to the connecting member 22 by the snap structure or the bolt. Of course, other connecting structures are also possible, and are not limited herein. For the sake of good appearance and protection of the inner and outer relative rotation members 1, 4, the fan head rear seat 3 is provided with a mounting through hole 31, and the connecting member 22 is connected to one of the inner and outer relative rotation members 1, 4 in the fan head rear seat 3 after penetrating at least partially through the mounting through hole 31. The torsion spring 5 is arranged at the rotating shaft of the fan head, and the torsion is adjusted through the wire diameter of the torsion spring 5, so that the torsion of the torsion spring 5 can act on the rotating shaft more directly, and the auxiliary effect on the head-up motor is better.

As shown in fig. 5 to 7, the torsion spring 5 includes a spiral tube 53 formed by a multi-turn ring structure, and a first torsion arm 51 and a second torsion arm 52 respectively located at both ends of the spiral tube 53, the first torsion arm 51 extends in a direction away from the axis of the spiral tube 53, and the second torsion arm 52 extends toward the axis of the spiral tube 53; the end of second torque arm 52 forms a binding hook 54.

A through hole 43 is formed in the middle of the outer relative rotation member 4, and the inner relative rotation member 1 is inserted through the through hole 43. The middle part of the inner relative rotation piece 1 is concave to form a concave cavity 12, the middle part of the concave cavity 12 is provided with a limit ring groove 11 and a convex column 13, and the convex column 13 is positioned in the limit ring groove 11. The spiral pipe 53 is embedded into the concave cavity 12 and is located on the periphery of the limiting ring groove 11, the second torque arm 52 penetrates into the limiting ring groove 11 from the opening of the limiting ring groove 11, and the binding hook 54 is buckled on the convex column 13. The outer counter-rotating element 4 is provided with a hook-shaped stop portion 41, and the first torsion arm 51 is located in the groove 42 of the stop portion 41 or on an extension of the groove 42. When the fan head assembly 100 moves downwards, the torsion spring 5 is pre-pressed through the limiting part 41; when the fan head assembly 100 is lifted upwards, the first torsion arm 51 continuously abuts against the limiting part 41, the torsion spring 5 gradually releases the torsion force, and the lifting of the fan head assembly 100 is assisted.

In this embodiment, the inner relative rotation element 1 is preferably fixedly connected to the support 2, the outer relative rotation element 4 is preferably fixedly connected to the fan head rear seat 3, the inner relative rotation element 1 is not moved when the fan head assembly 100 is lifted, and the outer relative rotation element 4 rotates clockwise around the inner relative rotation element 1. The pre-compression of the torsion spring 5 applies a torsion force along the circumferential tangential direction to the outer relative rotation piece 4, so that the fan head assembly 100 is lifted by the head-up motor, and the service life of the head-up motor is prolonged.

The existing fan generally has a function of swinging left and right, when the fan head assembly 100 rotates to a maximum angle, the swinging motor controlling the fan head assembly 100 to swing left and right can rotate reversely, and then the fan head assembly 100 is driven to rotate to the other side. In order to prevent the fan head assembly 100 from being broken due to the fact that the fan head assembly is steered in a unidirectional and infinite mode, the conventional method is to arrange a limiting rib on a transmission disc, arrange a limiting block at the maximum angle and limit the rotation range of a fan by using the limiting rib and the limiting block. The drawbacks of this structure are: the limiting ribs and the limiting blocks can only block the transmission disc from continuously rotating, but cannot control the working state of the head swinging motor. In the use process of the fan, if the fan head assembly 100 is manually pulled left and right for a certain angle, although the fan head assembly 100 is set to be rotated for use at the maximum angle, in practice, the limiting rib already touches the limiting block when the fan head assembly 100 swings to reach the maximum angle. Because of the effect of spacing muscle and stopper, fan head subassembly 100 has stopped rotating this moment, but the swing motor does not know this condition, still can carry out according to the procedure of setting for. That is, although the swing of the fan head assembly 100 has been actually stopped, the fan head assembly 100 is not reversed again until the swing motor performs the rotation for the set rotation time, which is normal.

In order to solve the problem of the existing fan, the fan in this embodiment further includes a fan head assembly 100, a swing motor, a limiting assembly, and a control module, wherein the swing motor is configured to drive the fan head to swing left and right. The spacing subassembly's effect is: when the fan head assembly 100 swings to the maximum set angle, the limiting assembly is triggered, the limiting assembly sends an instruction to the control module, and the control module receives the instruction and controls the head swinging motor to rotate reversely. In one embodiment of the present application, the control module may decelerate after receiving the command until the fan head assembly 100 stops swinging, and then the control module controls the swing motor to rotate reversely.

When the fan is normally used, the rotation time set in the program of the head swinging motor is consistent with the time of sending the instruction by the limiting component. When the fan is not normally used, for example, after the user manually rotates the fan head assembly 100 by a certain angle, the fan head assembly 100 actually rotates to the maximum angle when the swing motor has not executed the rotation time set in the program, at this time, the instruction sent by the limiting assembly will interrupt the current program of the swing motor, and the swing motor starts to execute the subsequent program and drives the fan head assembly 100 to rotate reversely.

Namely, when the control module does not receive the instruction sent by the limiting component, the head swinging motor executes the set program; when the control module receives the instruction sent by the limiting component, the head swinging motor judges that the set rotation time is achieved, and then the subsequent reverse rotation program is executed.

The specific composition structure of the limiting assembly is not limited, and the limiting assembly can be triggered and sent to an instruction at a set position. Preferably, as shown in fig. 8, the position limiting assembly includes a magnet 81 and a reed pipe 82. More preferably, the fan includes a base 6 and a fan head support rod 7 mounted on the base 6, and one of the magnet 81 and the reed switch 82 is mounted on the base 6 and the other is mounted on the fan head support rod 7.

The specific structure of the base 6 is not limited, and preferably includes a base 62 and a base upper cover 61, the base upper cover 61 is installed on the base 62, and an accommodating space can be formed after the base upper cover 61 and the base 62 are buckled, and the reed pipe 82, the magnet 81 and the head swing motor are all arranged in the accommodating space. The reed switch 82 is arranged on the base upper cover 61; the fan preferably comprises a transmission disc 9, the transmission disc 9 is fixed on the fan head supporting rod 7, and the magnet 81 is arranged on the transmission disc 9. The top end of the fan head support rod 7 is connected to the bracket 2, the fan head assembly 100 is pivotally connected to the bracket 2, and the fan head assembly 100 can rotate around a pivot shaft; the bottom end of the fan head supporting rod 7 is connected to the base upper cover 61, the fan head supporting rod 7 can rotate relative to the base upper cover 61, and the swing motor can drive the transmission disc 9 and the fan head supporting rod 7 to rotate so as to drive the support 2 and the fan head assembly 100 to swing. When the fan head assembly 100 rotates to the maximum angle, the magnet 81 and the reed pipe 82 can be overlapped.

The working principle of the limiting assembly is as follows: when the magnet 81 is far away from the reed pipe 82, the reed pipe 82 is not conducted, no instruction is sent out, and the head swinging motor works normally; when the magnet 81 is overlapped with the reed pipe 82, the reed pipe 82 is conducted, the reed pipe 82 sends a signal (instruction) to the control module, and the control module controls the head swinging motor to execute the setting action.

On the basis of the structure, the fan further comprises a limiting rib 83 and a limiting block 84, wherein one of the limiting rib 83 and the limiting block 84 is installed on the base 6, and the other limiting rib 83 and the limiting block 84 are installed on the fan head supporting rod 7. Preferably, the magnet 81 and the limiting rib 83 are both arranged on the transmission disc 9 and are both positioned on the same radial straight line on the transmission disc 9; the reed pipe 82 and the limiting block 84 are both arranged on the base upper cover 61 and are both positioned on the same radial line on the base upper cover 61. When the head swinging motor works, the transmission disc 9 and the fan head supporting rod 7 are driven to rotate, so that the fan head assembly 100 is driven to swing left and right; the base upper cover 61 is fixed. When the fan head assembly 100 rotates to reach a maximum set angle (for example, 90 °, 180 ° or 270 °), the magnet 81 is located below the reed pipe 82, the reed pipe 82 is conducted and then sends a signal to the control module, and the control module controls the speed reduction and the reverse rotation of the head swinging motor. When the maximum setting angle is different, the relative positions of the limiting rib 83 and the limiting block 84 are different (for example, the initial value is different by 90 °, 180 ° or 270 °), and the relative positions of the magnet 81 and the reed switch 82 are different (for example, the initial value is different by 90 °, 180 ° or 270 °).

The limiting ribs 83 and the limiting blocks 84 are used for blocking the transmission plate 9. If the limiting ribs 83 and the limiting blocks 84 are not installed, the operation is theoretically feasible, when the limiting ribs 83 and the limiting blocks 84 coincide with each other, an instruction is given at the moment, the control module can control the head swinging motor to rotate reversely, and the effect can be achieved. But the sensitivity requirements for the respective device are very high. After the limiting ribs 83 and the limiting blocks 84 are arranged, the fan head assembly 100 stops rotating when the limiting ribs 83 are abutted to the limiting blocks 84, the magnet 81 and the reed pipe 82 are kept at the overlapped position, and the situation that the driving disc 9 directly crosses the overlapped position of the magnet 81 and the reed pipe 82 due to inertia to cause the magnet 81 and the reed pipe 82 to be incapable of playing a role is avoided. The magnet 81 and the reed switch 82 stay at the coincident position for a sufficient time to smoothly issue a command, and also give a response time to the control module and the yaw motor, without an excessive requirement on the sensitivity of each device.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. The utility model provides a fan head revolution mechanic with supplementary function of lifting one's head which characterized in that includes:

the inner relative rotating part (1) is fixedly connected to one of the bracket (2) and the fan head rear seat (3);

the outer relative rotating part (4) is sleeved on the periphery of the inner relative rotating part (1) and is fixedly connected to the other one of the bracket (2) and the fan head rear seat (3);

the two ends of the torsion spring (5) are respectively arranged on the inner relative rotating piece (1) and the outer relative rotating piece (4); when the fan head rear seat (3) moves upwards, the torsion spring (5) applies torsion force along the circumferential tangential direction to the inner relative rotation piece (1) and the outer relative rotation piece (4), and the torsion force provides an auxiliary force for lifting upwards for the fan head rear seat (3).

2. The fan head rotating structure according to claim 1, wherein the axis of the inner relative rotation member (1) coincides with the axis of the outer relative rotation member (4).

3. The fan head rotating structure according to claim 1, wherein a through hole (43) is formed in a middle portion of the outer relative rotating member (4), and the inner relative rotating member (1) is inserted in the through hole (43); the middle part of the inner relative rotating piece (1) is recessed to form a concave cavity (12), and the middle part of the concave cavity (12) is provided with a limiting ring groove (11);

spiral pipe (53) embedding of torsional spring (5) just be located in cavity (12) the periphery of spacing annular groove (11), outer relative rotation piece (4) are last to be provided with spacing portion (41), one of second torque arm (52) and first torque arm (51) of torsional spring (5) both is followed the opening part of spacing annular groove (11) penetrates in spacing annular groove (11), another is located in recess (42) of spacing portion (41) or be located on the extension line of recess (42).

4. The fan head rotating structure according to claim 3, wherein a convex pillar (13) is further provided in the middle of the concave cavity (12), the convex pillar (13) is located in the limiting ring groove (11), the end of one of the second torque arm (52) and the first torque arm (51) forms a binding hook (54), and the binding hook (54) is buckled on the convex pillar (13).

5. The fan head rotating structure according to claim 1, wherein the bracket (2) includes a U-shaped bracket main body (21) and two connecting pieces (22) respectively provided at both ends of the bracket main body (21), and one of the inner relatively rotating member (1) and the outer relatively rotating member (4) is mounted on the bracket main body (21) through the connecting piece (22).

6. A fan comprising a support (2) and a fan head rear seat (3), characterized in that it further comprises a fan head rotating structure according to any one of claims 1 to 5, the inner relative rotating member (1) being fixedly connected to one of said support (2) and said fan head rear seat (3), and the outer relative rotating member (4) being fixedly connected to the other.

7. The fan according to claim 6, further comprising a fan head assembly (100), a swing motor, a limiting assembly and a control module, wherein the swing motor is used for driving the fan head assembly (100) to swing left and right, the limiting assembly is triggered when the fan head assembly (100) swings to a maximum set angle, the limiting assembly sends an instruction to the control module, and the control module receives the instruction and then controls the swing motor to rotate reversely.

8. The fan according to claim 7, wherein the limiting assembly comprises a magnet (81) and a reed pipe (82), the fan further comprises a base (6) and a fan head support rod (7) mounted on the base (6), one of the magnet (81) and the reed pipe (82) is mounted on the base (6), and the other is mounted on the fan head support rod (7).

9. The fan as claimed in claim 8, wherein the base (6) includes a base upper cover (61), and one of the magnet (81) and the reed pipe (82) is mounted on the base upper cover (61); and/or the presence of a gas in the gas,

the fan further comprises a transmission disc (9), the transmission disc (9) is fixed on the fan head supporting rod (7), and the other of the magnet (81) and the reed pipe (82) is installed on the transmission disc (9).

10. The fan according to claim 8, further comprising a limiting rib (83) and a limiting block (84), wherein one of the limiting rib (83) and the limiting block (84) is mounted on the base (6), and the other is mounted on the fan head support rod (7).

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