JP4755513B2 - Shut-off valve - Google Patents

Description

  The present invention relates to an improvement in a shutoff valve.

2. Description of the Related Art As a conventional shut-off valve, a valve having an air inlet and outlet and a connector for energizing a coil that drives a solenoid valve that shuts off between the inlet and the outlet is known (see, for example, Patent Document 1). .)
JP 2003-314723 A

  As shown in FIG. 1B and FIG. 2A of Patent Document 1, the shut-off valve 1 is arranged so that the cover 14 is orthogonal to the inlet pipe 33 and the inlet pipe 33 serving as an air inlet. A pair of outlet pipes 56, 56 provided and a connector 15 provided so as to face the inlet pipe 33 are formed integrally with the cover 14.

  The passage between the inlet pipe 33 and the outlet pipes 56 and 56 is opened and closed by a valve body 19 provided at the tip of the plunger 13. The plunger 13 is driven by energizing the solenoid coil 12 from the connector 15 side.

Since the inlet pipe 33, the outlet pipes 56 and 56, and the connector 15 protrude in four directions, the shut-off valve 1 itself occupies a large space. Further, if a hose is connected to each of the inlet pipe 33 and the outlet pipes 56 and 56 and another connector is connected to the connector 15, a large space is occupied around the shutoff valve 1 and its surroundings. For example, in a motorcycle or the like, space is limited in the vehicle body, and therefore the arrangement of other parts is restricted when the shut-off valve 1 is arranged.
An object of the present invention is to increase the degree of freedom of arrangement by reducing the occupied space of the shut-off valve.

The invention according to claim 1 is a shut-off valve in which a flow path between an inlet and an outlet is opened and closed by a solenoid valve which can be moved back and forth. The inlet and the outlet are provided in the same plane, and the solenoid valve is driven. A connector for supplying power to the coil is also provided in the plane, and the cutoff valve is provided in the plane with a mounting flange for mounting the cutoff valve on the vehicle body frame side and provided in the vicinity of the coil, and a pair of mounting flanges are provided on both sides of the coil. In addition, the connector is offset in the vertical direction, and a connector is provided above the lower mounting flange .
As an action, by providing the inlet and outlet and the connector in the same plane, the width of the shut-off valve in the direction perpendicular to the plane is reduced.

The present invention, as described above, a mounting flange for mounting the shutoff valve to the body frame side, than provided in the vicinity of the coil is provided on the plane, the inlet and outlet, a connector is provided with a mounting flange in the same plane Thus, the width of the shut-off valve in the direction perpendicular to the plane becomes smaller.

Furthermore, according to the present invention , since a pair of mounting flanges are provided on both sides of the coil and offset in the vertical direction, and the connector is provided above the lower mounting flange, the connector is used by utilizing the space above the lower mounting flange. It becomes possible to arrange.

In the invention according to claim 2, the body of the shut-off valve has a connector on one side from the top, a pair of mounting flanges on both sides with respect to the central portion of the body, and an inlet and an outlet on both sides with respect to the central portion. It is characterized by being alternately arranged in the vertical direction in order .
As an effect, the distance between the connector, the pair of mounting flanges, the inlet and the outlet can be reduced in the vertical direction.

The invention according to claim 3 is characterized in that the connector, the pair of mounting flanges, the inlet and the outlet are integrally formed on the body, and a receiving seat for the solenoid valve is separately attached to the integrally formed product.
As an action, the seat is removed from the integrally molded product, and the solenoid valve is assembled inside.

In the invention according to claim 1, the inlet and the outlet are provided in the same plane, and a connector for supplying electric power to the coil for driving the solenoid valve is also provided in the plane, and the cutoff valve is mounted on the vehicle body frame side. Since the mounting flange is provided in the plane and in the vicinity of the coil, a pair of mounting flanges are provided on both sides of the coil and offset in the vertical direction, and a connector is provided above the lower mounting flange. Since the width of the shut-off valve can be reduced in the direction perpendicular to the extending direction of each connector and the space occupied by the shut-off valve can be reduced, the shut-off valve can be easily arranged in a narrow space in the vehicle body. It is possible to increase the degree of freedom of arrangement on the vehicle body.

Next, in the present invention, since the mounting flange for mounting the shut-off valve on the vehicle body frame side is provided in the plane and in the vicinity of the coil, the shut-off valve can be further thinned, and the occupied space of the shut-off valve is further reduced. And the degree of freedom of arrangement can be further increased. Moreover, a mounting bolt etc. can be tightened from the both sides of the shut-off valve, and assemblability to the vehicle body frame can be improved.

Furthermore, in the present invention, since a pair of mounting flanges are provided on both sides of the coil and offset in the vertical direction, and a connector is provided above the lower mounting flange, the pair of mounting flanges and connectors of the shut-off valve are arranged in a compact manner. Therefore, the shut-off valve can be downsized. Further, the attachment to the body frame side can be strengthened by the pair of attachment flanges.

In the invention according to claim 2, the body of the shut-off valve, the connector on one side from the top, the pair of mounting flanges on both sides with respect to the central part of the body, and the inlet and outlet are staggered on both sides with respect to the central part. Since they are alternately arranged in the vertical direction in order, the vertical dimension of the shut-off valve can be reduced, and the shut-off valve can be further reduced in size.

In the invention according to claim 3, the connector, the pair of mounting flanges, the inlet and the outlet are integrally formed on the body, and the solenoid valve receiving seat is attached separately to these integrally molded products, so only the receiving seat is removed. As a result, the assembling property of the solenoid valve can be improved.

The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. The drawings are viewed in the direction of the reference numerals.
FIG. 1 is a side view of a motorcycle having a shut-off valve according to the present invention. A motorcycle 10 includes a body frame 11, an engine 12 attached to the lower portion of the body frame 11, and a lower center portion of the body frame 11. A swing arm 13 that is freely swingable up and down, a rear wheel 14 that is attached to the rear end of the swing arm 13, a rear cushion unit 16 that is attached to each of the upper center portion of the body frame 11 and the swing arm 13; A vehicle including a front fork 18 that is steerably attached to a head pipe 17 constituting the front end of the body frame 11, a front wheel 21 attached to the lower end of the front fork 18, and a bar handle 22 attached to the upper end of the front fork 18. It is.

  The vehicle body frame 11 includes a head pipe 17, a pair of left and right main frames 25 and 26 (only the reference numeral 25 on the near side is shown) extending rearward and downward from the head pipe 17, and the rear of the main frames 25 and 26. A pair of left and right pivot frames 27 and 28 attached to the ends (only reference numeral 27 on the front side is shown), and a pair of left and right seat rails 31 extending obliquely rearward and upward from the rear upper part of these pivot frames 27 and 28, respectively. 32 (only the reference numeral 31 on the front side is shown), and a pair of left and right subframes 33 and 34 (front side) extending rearward and obliquely upward from the central portions of the pivot frames 27 and 28 and having rear ends connected to the seat rails 31 and 32, respectively. Only the reference numeral 33 on the side is shown.).

  The main frames 25 and 26 are members to which a pair of left and right engine hangers 36 and 37 (only the reference numeral 36 is shown) and a fuel tank 38 are attached, and the engine hangers 36 and 37 support a lower front portion of the engine 12. To do.

The pivot frames 27 and 28 are members to which the pivot shaft 41 and the engine support brackets 42 and 43 are attached. The swing arm 13 is attached to the pivot shaft 41 so as to be swingable, and the engine support brackets 42 and 43 support the rear portion of the engine 12. To do.
The seat rails 31 and 32 are members that support the seat 45.

The engine 12 includes a cylinder portion 51 tilted forward at an upper front portion, and a transmission 52 is integrally attached to a rear portion.
The cylinder portion 51 includes a cylinder head 53, and the cylinder head 53 is a component in which an intake device 55 is attached to the rear portion and an exhaust device 56 is attached to the front portion.

The intake device 55 includes a throttle body 61 attached to the cylinder head 53 and an air cleaner 63 connected to the rear end of the throttle body 61 via a connecting tube 62.
The exhaust device 56 includes an exhaust pipe 66 attached to the cylinder head 53 and a muffler 67 connected to the rear end of the exhaust pipe 66.

  The engine 12 also supplies a secondary air supply device (not shown; details will be described later) for supplying air (secondary air) from the intake device 55 side to the exhaust device 56 side in order to burn unburned components in the exhaust gas. And a shut-off valve 71 constituting a part of the secondary air supply device is attached to a front cross pipe 72 that passes between the left and right main frames 25 and 26.

The transmission 52 has an output shaft 75 projecting from its side surface, and the output shaft 75 is a part to which a drive sprocket 76 is attached.
The rear wheel 14 has a driven sprocket 78 integrally attached thereto, and the drive sprocket 72 and the driven sprocket 78 described above are parts over which a chain 81 is stretched.

  In detail, the rear cushion unit 16 is attached to a rear cross pipe 84 having its upper end between a pair of left and right pivot frames 27 and 28 via a cushion bracket 85.

  Here, 91 is a front cowl, 92 is a wind screen, 93 is a front fender, 94 is a disc brake for front wheels, 96 is a fuel pump provided in the fuel tank 38, 97 is a radiator, and 98 is a rear fender.

  FIG. 2 is a rear view showing the shut-off valve mounting structure according to the present invention. A front cross pipe 72 is passed to a pair of left and right main frames 25 and 26, and the shut-off valve 71 is connected to the front cross pipe 72 via a mounting bracket 103. Indicates that it has been installed. Reference numeral 105 denotes an upstream hose that communicates between the air cleaner 63 (see FIG. 1) and the shutoff valve 71, and reference numeral 106 denotes a downstream hose that communicates between the shutoff valve 71 and the exhaust device 56 (see FIG. 1).

  FIG. 3 is a plan view showing the shut-off valve mounting structure according to the present invention, and the mounting bracket 103 for the shut-off valve 71 is a part attached with a bolt 111 to a stay 108 attached to the front cross pipe 72 by welding, It comprises a pipe-side attachment portion 113 attached to the stay 108 and a valve support portion 114 formed by bending the pipe-side attachment portion 113 integrally.

  The pipe-side attachment portion 113 includes a flat plate portion 116 and a bent portion 117 that is bent downward from the left edge of the flat plate portion 116. By attaching the bent portion 117 to the edge portion 108a of the stay 108, a mounting bracket is provided. 103 is configured not to rotate with respect to the stay 108.

  The valve support portion 114 includes a U-shaped portion 121 and plate-like protruding end portions 122 and 123 protruding from both ends of the U-shaped portion 121. These protruding end portions 122 and 123 are nuts, respectively. 124 is a welded portion.

  The shut-off valve 71 includes a pair of mounting flanges 126 and 127 (only one reference numeral 126 is shown), one mounting flange 126, circular rubber 131 and 132 applied to both surfaces of the mounting flange 126, and one rubber 131. The mounting flange 126 is mounted on the mounting bracket 103 by passing the bolts 134 through the washers 133 applied to each other and screwing the tip of the bolt 134 into the nut 124. The mounting flange 127 is also mounted on the mounting bracket 103 in the same manner as the mounting flange 126. It is a part.

  FIG. 4 is a side view of the shut-off valve according to the present invention. The shut-off valve 71 is formed by connecting an external connector 137 (conductive wire 138) for energizing from the outside to the resin body 141 from the top to the bottom. Connector 142, mounting flanges 126 and 127, an inlet pipe 143 for connecting the upstream hose 105, and an outlet pipe 144 for connecting the downstream hose 106 are alternately formed integrally with the central portion 146. It is. Thus, by arranging the connector 142, the mounting flanges 126, 127, the inlet pipe 143, and the outlet pipe 144 alternately and close to each other, the vertical dimension of the shut-off valve 71 can be reduced, and the size can be reduced. Can be planned.

  By disposing the mounting flanges 126 and 127 on both sides with respect to the central portion 146, the shutoff valve 71 can be mounted stably and firmly on the vehicle body frame side. Reference numerals 126a and 127a denote mounting holes.

  FIG. 5 is a plan view of the shutoff valve according to the present invention. The connector 142, the mounting flanges 126 and 127, the inlet pipe 143, and the outlet pipe 144 are on the same plane 150 (150a is a straight line on the plane 150). The front end 126b of the mounting flange 126 and the front end 143a of the inlet pipe 143 are aligned with each other, and the front end 127b of the mounting flange 127 and the front end 144a of the outlet pipe 144 are aligned with each other.

  Thus, the connector 142, the mounting flanges 126 and 127, the inlet pipe 143, and the outlet pipe 144 are arranged on the same plane 150, so that the shut-off valve 71 can be made flat, and the motorcycle 10 (see FIG. 1). ) Can be easily arranged even in a space such as a narrow gap, and the degree of freedom of arrangement can be increased.

  Further, by disposing the mounting flanges 126 and 127 on the same plane 150, the mounting bracket 103 (see FIG. 3) can be mounted on both sides of the mounting flanges 126 and 127. The bolts can be tightened from either side, and can be easily assembled according to the attachment location of the shut-off valve 71 to the motorcycle 10.

  Further, by arranging the connector 142, the inlet pipe 143, and the outlet pipe 144 on the same plane 150, the lead wire 138 (see FIG. 4) extending from the connector 142 and the upstream hose 105 connected to the inlet pipe 143 (see FIG. 4). ), The downstream hose 106 (see FIG. 4) connected to the outlet pipe 144 can also be arranged in the same plane 150, and the arrangement of the secondary air supply device 155 (see FIG. 6) described below is arranged. The degree of freedom can also be increased.

  FIG. 6 is a system diagram of the secondary air supply device according to the present invention. The secondary air supply device 155 is connected to the upstream hose 105 having one end connected to the air cleaner 63 and to the other end of the upstream hose 105. The shut-off valve 71 includes a downstream hose 106 having one end connected to the shut-off valve 71, and a reed valve 156 connected to the other end of the downstream hose 106 and communicated with the exhaust pipe 66.

  Here, reference numeral 158 denotes an air cleaner element provided in the air cleaner 63, 161 denotes an intake passage composed of a throttle body 61 (see FIG. 1) and a connecting tube 62 (see FIG. 1), and 162 and 163 denote cylinder heads 53 (see FIG. 1). 164 is an exhaust valve that opens and closes the exhaust port 163, 167 is a combustion chamber, 168 is a piston, and 171 is provided in the middle of the exhaust pipe 66. Catalyst.

Next, the flow of secondary air will be described.
When the passage in the shutoff valve 71 is opened, the reed valve 156 is opened when the pressure in the exhaust pipe 66 is reduced due to the pulsation of the exhaust generated in the exhaust pipe 66, and the secondary that has passed through the air cleaner element 158 of the air cleaner 63. Air flows into the exhaust pipe 66 through the upstream hose 105, the shut-off valve 71, the downstream hose 106, and the reed valve 156. As a result, unburned gas in the exhaust pipe 66 is combusted by the secondary air, and clean exhaust gas is discharged to the outside.

  7 is a cross-sectional view taken along line 7-7 in FIG. 5. The shut-off valve 71 includes a body 141, a valve driving unit 175 as a solenoid provided in the body 141, and a valve driven by the valve driving unit 175. It comprises a body 176 and a cap 178 that closes the lower opening of the body 141.

  The valve drive unit 175 is a part in which a central part 146 is provided with a coil 181 wound around a resin bobbin 179 and a plunger 184 as a magnetic body movably inserted into a cylinder part 183 provided on the bobbin 179. .

The valve body 176 includes a cored bar 186 and a rubber 187 surrounding the cored bar 186, and is attached to the lower end portion of the thin shaft portion 191 formed at the lower portion of the plunger 184.
The upper surface of the valve body 176 is pressed by the other end of the compression coil spring 194 whose one end is in contact with the upper end of the inlet chamber 193 in the body 141, and the lower surface of the valve body 176 is supported by the seat body 178 a of the cap 178.

  196 is a valve seat provided on the ceiling of the valve chamber 197 in which the valve body 176 is disposed, 201 and 202 are terminals provided in the connector 142 to energize the coil 181, and 203 is a plunger stopper member that receives the upper end of the plunger 184.

As shown in the drawing, when the valve element 176 is opened from the valve seat 196, the secondary air flows from the inlet pipe 143 to the outlet pipe 144 through the inlet chamber 193 and the valve chamber 197.
In this state, when the coil 181 is energized through the terminals 201 and 202 of the connector 142, the plunger 184 moves upward in the cylinder portion 183 against the elastic force of the compression coil spring 194, and the valve body 176 is moved to the valve seat. The valve is in a closed state seated on 196, and the secondary air passage 204 (consisting of the inlet chamber 193 and the valve chamber 197) between the inlet pipe 143 and the outlet pipe 144 is blocked.

  As shown in FIGS. 4, 5, and 7, according to the present invention, the flow between the inlet pipe 143 as the inlet and the outlet pipe 144 as the outlet is achieved by the valve body 176 as the solenoid valve that can be moved forward and backward. In the shutoff valve 71 configured to open and close the secondary air passage 204 as a passage, a connector that supplies an inlet pipe 143 and an outlet pipe 144 on the same plane 150 and supplies electric power to a coil 181 that drives the valve body 176 142 is also provided on the plane 150.

  As a result, the width of the shut-off valve 71 can be reduced in the direction orthogonal to the extending direction of each of the inlet pipe 143, the outlet pipe 144, and the connector 142, and the occupied space of the shut-off valve 71 can be reduced. The shut-off valve 71 can be easily arranged in a narrow space in the vehicle body, and the degree of freedom of arrangement in the vehicle body can be increased.

Further, the present invention is characterized in that mounting flanges 126 and 127 for mounting the shut-off valve 71 on the vehicle body frame 11 (see FIG. 1) side are provided on the plane 150 and in the vicinity of the coil 181.
Thereby, the shut-off valve 71 can be further thinned, the occupied space of the shut-off valve 71 can be further reduced, and the degree of freedom of arrangement can be further increased. Moreover, the bolt 134 (refer FIG. 2) as an attachment bolt etc. can be fastened from the both sides of the cutoff valve 71, and an assembly property can be improved.

  Further, the mounting flanges 126 and 127, the connector 142, the inlet pipe 143, and the outlet pipe 144 are extended on the same plane 150 and in two directions (that is, the direction facing the central portion 146). Even on the flat surface 150, the space occupied by the shut-off valve 71 is smaller than when extending in three or four directions (when the connector 142 is extended upward or the outlet pipe 144 is extended downward). can do.

  Furthermore, the present invention is characterized in that a pair of mounting flanges 126 and 127 are provided on both sides of the coil 181 and offset in the vertical direction, and a connector 142 is provided above the lower mounting flanges 126 and 127.

  Accordingly, the pair of mounting flanges 126 and 127 of the shut-off valve 71 and the connector 142 can be arranged in a compact manner, and the shut-off valve 71 can be downsized. Further, the attachment to the body frame 11 side can be strengthened by the pair of attachment flanges 126 and 127.

Furthermore, the present invention is characterized in that the connector 142, the pair of mounting flanges 126 and 127, the inlet pipe 143, and the outlet pipe 144 are alternately arranged in the vertical direction.
Thereby, the upper and lower dimensions of the shut-off valve 71 can be reduced, and the shut-off valve 71 can be further reduced in size.

Furthermore, according to the present invention, the connector 142, the pair of mounting flanges 126 and 127, the inlet pipe 143 and the outlet pipe 144 are integrally formed in the body 141, and the cap 178 as a receiving seat for the valve body 176 with respect to these integrally molded products. Is a separate item.
Thereby, the assembly | attachment property of the valve body 176 can be improved by removing only the cap 178. FIG.

8A to 8C are cross-sectional views taken along line 8-8 of FIG. 7, in which FIG. 8A is the first embodiment, FIG. 8B is the second embodiment, and FIG. 8C is the third embodiment. .
(A) shows having formed in the cylinder part 183 of the bobbin 179 the several V-shaped groove | channel 206 along a cylinder axis. For example, even when dust in the secondary air enters between the cylinder portion 183 and the plunger 184, the dust is located in the groove 206, so that the dust is caught between the cylinder portion 183 and the plunger 184. It is possible to prevent the malfunction of the plunger 184.

  Returning to FIG. 7, when the plunger 184 moves in the cylinder part 183, the air in the space 208 between the plunger 184 and the plunger stopper member 203 is changed into the plurality of grooves 206 shown in FIG. 8A. Therefore, the movement of the plunger 184 is not hindered, and the plunger 184 can be moved quickly. The groove 206 can be easily formed with a mold.

FIG. 8B shows that a plurality of V-shaped grooves 213 along the cylinder axis are formed in the cylinder portion 212 of the bobbin 211.
(C) shows that the plunger 218 having an elliptical cross section is movably inserted into the cylinder portion 217 of the bobbin 216. Spaces 221 and 222 between the cylinder portion 217 and the plunger 218 are spaces that can accommodate dust.

  FIG. 9 is a cross-sectional view of a shut-off valve (fourth embodiment) according to the present invention. The shut-off valve 231 is replaced with a cap 178 (see FIG. 7) of the shut-off valve 41 (see FIG. 7). The lower body 233 is attached to the body.

  That is, the shut-off valve 231 includes a body 141, a valve drive unit 175 as a solenoid provided in the body 141, a valve body 176 driven by the valve drive unit 175, and a lower part attached to the lower opening of the body 141. A body 233.

The lower body 233 includes through holes 233a and 233a communicating with the valve chamber 197, a lower outlet chamber 235 facing the through holes 233a and 233a, and a lower outlet pipe 236 communicating with the lower outlet chamber 235.
The lower outlet pipe 236 is a portion arranged below the inlet pipe 143. The inlet pipe 143, the outlet pipe 144, and the lower outlet pipe 236 are alternately arranged from the top to the bottom, and the same plane 150 (see FIG. 5). It is arranged above.

  Thus, by arranging the inlet pipe 143, the outlet pipe 144, and the lower outlet pipe 236 on the same plane 150, the upstream hose 105 (see FIG. 3) connected to the inlet pipe 143 is connected to the outlet pipe 144. The downstream hose 106 (see FIG. 3) and the hose (not shown) connected to the lower outlet pipe 236 can also be arranged in the same plane, and the space occupied by the secondary air supply device 155 (see FIG. 6). Can be made smaller.

  In the first embodiment and the second embodiment shown in FIGS. 8A and 8B, the grooves 206 and 213 are formed in the bobbins 179 and 211, respectively. However, the outer peripheral surface of the plunger 184 is not limited thereto. You may provide a groove | channel in.

  The shut-off valve of the present invention is suitable for a motorcycle.

1 is a side view of a motorcycle including a shutoff valve according to the present invention. It is a rear view which shows the cutoff valve attachment structure which concerns on this invention. It is a top view which shows the cutoff valve attachment structure which concerns on this invention. It is a side view of the shut-off valve concerning the present invention. It is a top view of the shut-off valve concerning the present invention. It is a systematic diagram of the secondary air supply device concerning the present invention. FIG. 7 is a cross-sectional view taken along line 7-7 in FIG. 5. FIG. 8 is a cross-sectional view taken along line 8-8 in FIG. 7. It is sectional drawing of the cutoff valve (4th Embodiment) which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Motorcycle, 11 ... Body frame, 126, 127 ... Mounting flange, 141 ... Body, 142 ... Connector, 143 ... Inlet (inlet pipe), 144, 236 ... Outlet (outlet pipe, lower outlet pipe), 146 ... Body the central portion of the, 150 ... plane, 176 ... solenoid valve (valve body), 178 ... seat (cap), 181 ... coil, the flow passage (secondary air passage) between 204 ... inlet and outlet.

Claims (3)

In a shut-off valve (71) configured to open and close a flow path (204) between an inlet (143) and an outlet (144 ) by a solenoid valve (176) which can be moved forward and backward,
The inlet (143) and the outlet (144) are provided in the same plane, and a connector (142) for supplying power to the coil (181) for driving the solenoid valve (176) is also provided in the plane.
The shut-off valve (71) is provided with mounting flanges (126, 127) for mounting the shut-off valve (71) on the vehicle body frame side in the plane and in the vicinity of the coil (181).
A pair of the mounting flanges (126, 127) are provided on both sides of the coil (181) and offset in the vertical direction, and the connector (142) is provided above the lower mounting flange (127).
A shut-off valve characterized by that. The connector (142) is connected to the body (141) of the shut-off valve (71) from the upper side, and the pair of mounting flanges (126, 127) are connected to the central portion (146) of the body (141). 2. The shutoff valve according to claim 1 , wherein the inlet (143) and the outlet (144) are alternately arranged on both sides of the central portion (146) alternately in the vertical direction . Said connector (142), said pair of mounting flanges (126, 127), said inlet (143) and is integrally formed above the outlet (144) in said body (141), said solenoid valve for these molded articles The shut-off valve according to claim 2, wherein the receiving seat (178 ) of ( (176) ) is an accessory.

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