JP5155245B2 - Rotating electrical parts with switch - Google Patents

Description

  The present invention relates to a rotary electric component with a switch including, for example, a switch mechanism for switching on / off of a power source and a rotary sensor such as a variable resistor or an encoder.

  A rotary type with a switch that can be switched on and off by rotating the operating body, and that a signal corresponding to the rotation angle is output by rotating the operating body in the switch-on state. Electrical parts are often used for input devices for acoustic products. For example, an acoustic product configured so that the volume can be adjusted based on the rotational position information of an operating body detected by a variable resistor or the like by switching the power on and off with a switch mechanism has been widely known. . In addition, this type of rotating electrical component with a switch is sometimes used as an input device for adjusting the optical axis of a headlight of an automobile. When the power of the shaft adjusting motor is turned on and the operating body is further rotated, the optical axis of the headlight can be adjusted according to the rotation angle.

  In a rotating electrical component equipped with a switch mechanism that switches the power supply on and off in this way, a relatively large current flows through the contact point of the switch mechanism, so that the on / off switching operation can be performed quickly. It is necessary to keep it. Therefore, conventionally, a wire spring that is elastically deformed as the operating body is rotated is used. When the operating body is rotated to a predetermined position, the bending of the wire spring is released all at once, and the wire spring drives and fixes the movable contact. There has been proposed a rotating electrical component with a switch that is configured to be brought into contact with a contact point and thereby shift to a switch-on state immediately after generating a click feeling (see, for example, Patent Document 1).

  The rotary electrical component with a switch disclosed in Patent Document 1 will be briefly described. In this conventional example, one end and the other end of the wire spring are locked to the cam member and the movable contact piece, and interlocked with the operating body. When the cam member to be rotated is rotated by a predetermined amount, the bending of the wire spring is released at once, and the movable contact piece is driven to rotate vigorously by the elastic force of the wire spring. As a result, the user's finger rotating the operating body can feel a click, and the movable contact piece can come into contact with the fixed contact so that the switching operation from the switch-off to the on-state can be performed quickly. In addition, when the operating body rotates, the slider attached to the slider receiver linked to the operating body changes the contact position with respect to the resistance substrate. Rotational position information can be detected as a change in resistance value.

Utility Model Registration No. 2582824

  However, in such a conventional example, there is a problem that bounce is large because the movable contact is abutted against the fixed contact by virtue of the elastic force of the wire spring. Further, in this conventional example, since the click feeling generated when the bending of the wire spring is released at once is not so clear, there is a problem that it is difficult for the user to perceive the operation timing of switching on / off of the switch mechanism.

  The present invention has been made in view of the actual situation of the prior art as described above, and an object of the present invention is to perform rotation with a switch with a click feeling that can be stably switched by generating a bounce and the switching operation is clear. It is to provide a mold electrical component.

  In order to achieve the above object, a rotating electrical component with a switch according to the present invention includes a housing, an operating body having a notch and rotatably supported by the housing, and a driven having a cam projection. A driving body that is provided with a portion and can be rotationally driven by the operating body, an engagement pressing portion that is elastically biased toward the driven portion and can be engaged with and disengaged from the cam protrusion, and a fixed contact provided on the housing And a switch comprising a movable contact provided on the driving body, and a rotary sensor for detecting rotational position information of the operating body, the movable contact being provided to be slidable with respect to the fixed contact. In addition, the operating body is arranged so that the driven portion is disposed in the notch with a clearance in the circumferential direction so that the driven body is rotatable relative to the operating body by the clearance, and the operating body is rotated. Driven to When the driving body reaches a predetermined rotational position and the engagement pressing portion gets over the cam projection, the driven portion is driven by the elastic force of the engagement pressing portion, and the driving body is self-propelled. The switch is switched.

  The rotary electric component with a switch configured in this way, when the operating body is rotated to a predetermined rotational operation position, the driving body is vigorously self-propelled by the elastic force of the engagement pressing portion that has overcome the cam projection. Therefore, it is possible to quickly perform an on / off switching operation in which the movable contact attached to the driving body is brought into contact with or separated from the fixed contact. Further, since this movable contact has elasticity, there is no possibility that bounce will occur even if the driving body vigorously self-runs and the movable contact comes into contact with the fixed contact. Then, since the rotary position information of the operating body can be detected by the rotary sensor in the switch-on state in which the movable contact is in sliding contact with the fixed contact, the rotary electric component with the switch is operated by rotating the operating body. A signal corresponding to the rotation operation angle can be output after the power source or the like is switched on. Further, since the engagement pressing portion that is elastically biased in the rotary electric component with switch can be formed on a leaf spring or the like, the assembly workability can be improved as compared with the case where a wire spring provided with a pretension is incorporated. In addition, since the engagement pressing portion made of a leaf spring or the like tends to produce a clear click feeling when getting over the cam projection, the user can easily feel the operation timing of switching on / off of the switch mechanism.

  In the above configuration, when the engagement pressing portion is formed on a part of the leaf spring, a large elastic force can be generated by the deflection of the leaf spring when the engagement pressing portion gets over the cam projection. The driven portion of the driving body can be driven with a strong force by this elastic force, and a very clear click feeling can be generated.

  Further, in the above configuration, the driven portion of the driving body is provided with the first rail surface serving as the sliding surface of the engaging pressing portion, and the operating body is engaged and pressed on the inner peripheral side or the outer peripheral side of the first rail surface. A second rail surface serving as a sliding surface of the first portion, and extending the first and second rail surfaces so that the engagement pressing portion straddles the first and second rail surfaces. Since the engagement pressing portion that slides on one rail surface during a rotation operation can be smoothly shifted to the other rail surface, the operation feeling can be improved. it can.

  In this case, the operating body is provided with a guide surface that extends on substantially the same circumference as the cam projection and serves as a sliding surface of the engagement pressing portion in a region excluding the notch portion, and the second rail surface is provided on the guide surface. Since the backlash of the operating body can be prevented by the engagement pressing portion when it is continuous, the operation feeling can be further enhanced.

  According to the rotary electric component with a switch of the present invention, the driven portion of the driving body having the cam protrusion is disposed in the notch portion of the operating body with a clearance in the circumferential direction, and the engagement pressing portion is the cam. Since the driven portion (driving body) is driven by the elastic force of the engagement pressing portion when the projection is overcome, the driving body is rotated when the operating body is rotated to a predetermined rotational operation position. You can make it self-propelled. Therefore, since the movable contact can be brought into sliding contact with the fixed contact, the movable contact does not strike the fixed contact vigorously, and bounce that occurs when the contact is switched can be suppressed. In addition, since the movable contact passes through the unstable region at the time of switching, the switching can be performed stably with less bounce. Further, since the engagement pressing portion directly gets over the cam projection, a clear click feeling can be obtained.

It is sectional drawing of the rotary electrical component with a switch which concerns on the example of embodiment of this invention. It is the disassembled perspective view which looked at this electrical component from diagonally forward. It is the disassembled perspective view which looked at this electrical component from diagonally backward. It is the external view which looked at this electrical component from diagonally forward. It is the external view which looked at this electrical component from diagonally backward. It is operation | movement explanatory drawing which shows the initial state of this electric component. It is operation | movement explanatory drawing which shows the state immediately before a drive body self-runs with this electrical component. It is operation | movement explanatory drawing which shows the state immediately after the drive body self-propelled with this electrical component. It is a principal part top view of this electric component corresponding to the state of FIG. It is a principal part top view of this electric component corresponding to the state of FIG. It is a principal part top view of this electric component corresponding to the state of FIG. It is a principal part top view which shows the state which rotated the operation body of this electrical component further from the state of FIG. It is a principal part top view which shows the state which rotated further the operation body of this electrical component from the state of FIG.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a rotary electric component with a switch according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the electric component as viewed obliquely from the front. 3 is an exploded perspective view of the electrical component as viewed obliquely from the rear, FIG. 4 is an external view of the electrical component as viewed obliquely from the front, and FIG. 5 is an external view of the electrical component as viewed obliquely from the rear. Is an operation explanatory diagram showing an initial state of the electric component, FIG. 7 is an operation explanatory diagram showing a state immediately before the driving body self-runs with the electric component, and FIG. 8 is immediately after the driving body self-running with the electric component. FIG. 9 is a plan view of the main part of the electrical component corresponding to the state of FIG. 6, FIG. 10 is a plan view of the main part of the electrical component corresponding to the state of FIG. 7, and FIG. FIG. 12 is a plan view of the main part of the electrical component corresponding to the state of FIG. Fragmentary plan view illustrating a state in which rolling, FIG. 13 is a plan view showing a state in which further rotation of the operating body of the electrical component from the state of FIG. 12.

  The rotary electrical component with a switch shown in these drawings includes a housing 3 in which a first case 1 and a second case 2 are integrated by snap coupling, and an engagement pressing portion 4a. An annular leaf spring 4, an operating body 5 in which a notch portion 5a is provided on the outer periphery and a rotation shaft 5b is rotatably supported on the housing 3, and a driven portion 6a is provided. The main body includes a drive body 6 rotatably supported by the first case 1, a movable contact 7 attached to the drive body 6, and a rotary sensor 8 incorporated on the back side of the first case 1. It is configured.

  The first case 1 is a molded product in which a conductive metal plate is integrally provided on an insulating resin by an insert molding technique. On the front side of the first case 1, there are provided a bearing portion 1 a that protrudes in a cylindrical shape, and a contact formation surface 1 b that extends around the bearing portion 1 a and is patterned with a fixed contact 9. The inner wall surface of the bearing portion 1a supports the rotation shaft 5b of the operating body 5 in a rotatable manner, and the outer wall surface of the bearing portion 1a supports the drive body 6 in a rotatable manner. A pair of locking projections 1c and 1d are provided on the outer wall portion of the first case 1 so as to protrude.

  The second case 2 is a molded product made of an insulating resin. The second case 2 is assembled to the first case 1 so as to cover the contact forming surface 1b and the periphery thereof, and the peripheral wall of the shaft hole 2a of the second case 2 is the rotating shaft 5b of the operating body 5. The front end is supported rotatably. The rear end of the second case 2 is snap-fitted with a locking hole 2b for snap-fitting the locking projection 1c of the first case 1 and a locking projection 1d of the first case 1. A pair of locking claws 2c is provided. As shown in FIG. 3, a pair of mounting recesses 2 d for assembling the leaf spring 4 and a stopper for defining a rotation allowable range of the operating body 5 on the inner wall portion on the back side of the second case 2. A step 2e is provided.

  The annular leaf spring 4 is provided with pressing portions 4a and 4b that are pressed into smooth convex shapes at two locations separated by 180 degrees. These pressing portions 4a and 4b are formed in the same shape, but one pressing portion 4a functions as an engaging pressing portion that can be engaged with and disengaged from a cam projection 6b (described later) of the driving body 6, and the other pressing portion 4b is The operating body 5 is always in elastic contact with a guide surface 5d described later. Further, the leaf spring 4 is provided with mounting pieces 4c projectingly inserted into the mounting recess 2d of the second case 2 at two positions 90 degrees away from both the pressing portions 4a and 4b. The leaf spring 4 is sandwiched between the back surface of the second case 2 and the front surface of the operating body 5 so that both pressing portions 4a and 4b can be brought into elastic contact with the guide surface 5d of the operating body 5. ing. However, the engagement pressing portion 4a is inserted into one end portion in the circumferential direction in the notch portion 5a of the operation body 5 in the initial state, and when the operation body 5 in the initial state is rotated, the leaf spring 4 is bent. The engagement pressing portion 4a gets over the cam projection 6b of the drive body 6.

  The operation body 5 is a molded product made of an insulating resin. An operation portion 5 c that is exposed to the outside of the housing 3 and is rotated is provided on the outer periphery of the operation body 5. The operation portion 5c is formed in a substantially C shape such that a ring centered on the rotation shaft 5b is divided by the notch portion 5a. The operating body 5 can be rotated within a predetermined angle range, and the notch 5 a is not exposed to the outside of the housing 3. The operation body 5 has a guide surface 5d extending in a substantially C shape along the inner peripheral edge of the operation portion 5c, and a shape protruding to the inner peripheral portion of the notch portion 5a continuously from the guide surface 5d. Rail surface 5e. The guide surface 5d and the rail surface 5e are formed as sliding surfaces of the engagement pressing portion 4a of the leaf spring 4, and the guide surface 5d is substantially the same width as the engagement pressing portion 4a, but the rail surface 5e. Is formed as a narrow sliding surface that is about half the width of the engagement pressing portion 4a. Further, the operating body 5 is formed with a fan-shaped convex portion 5f that can come into contact with the stopper step portion 2e of the second case 2, and the position of the fan-shaped convex portion 5f is regulated by the stopper step portion 2e. The allowable rotation range of the operating body 5 is defined at a predetermined angle, for example, about 130 degrees. That is, the operating body 5 can be rotated within an angle range in which the fan-shaped convex portion 5f does not contact the stopper step portion 2e. Note that the rear end portion of the operating body 5 is D-cut in order to transmit the rotational force to the rotor portion 8a of the rotary sensor 8 (see FIG. 3).

  The driving body 6 is a substantially annular molded product made of an insulating resin, and a wall-like driven portion 6a is formed on a part of the outer peripheral portion thereof. Since the driving body 6 is rotatably attached to the bearing portion 1a of the first case 1 and the driven portion 6a is disposed in the cutout portion 5a of the operating body 5, the operating body 5 is rotated. Then, the drive body 6 is rotationally driven via the driven part 6a. However, since the driven portion 6a is arranged with a clearance C (see FIG. 6) in the circumferential direction in the notch portion 5a, the driving body 6 rotates relative to the operating body 5 by this clearance C. It is free. The driven portion 6a extends in an arc shape along the circumferential direction, and a cam projection 6b that can be engaged with and disengaged from the engagement pressing portion 4a of the leaf spring 4 projects from the front side of one end portion thereof. In addition, a rail surface 6c serving as a sliding surface of the engagement pressing portion 4a is provided on the front surface side of the other end portion of the driven portion 6a. The cam projection 6b is substantially the same width as the engagement pressing portion 4a, but the rail surface 6c is formed as a narrow sliding surface that is about half the width of the engagement pressing portion 4a. And the rail surface 6c is arrange | positioned at the outer peripheral side of the rail surface 5e of the operation body 5, and both rail surfaces 6c and 5e adjoin at substantially the same height. However, the rail surface 6c of the driving body 6 is formed as an inclined surface gently descending from the cam projection 6b side, whereas the rail surface 5e of the operating body 5 is formed as an inclined surface gently rising from the tip side. The rail surfaces 6c and 5e have the same height at the intersections. Both the rail surfaces 6c and 5e extend on substantially the same circumference as the engagement pressing portion 4a. A pair of caulking bosses 6d for attaching the movable contact 7 is provided on the back side of the driving body 6 (see FIG. 3).

  The movable contact 7 is a slider piece having elasticity, and is made of a conductive metal plate formed in a substantially annular shape. The movable contact 7 is attached to the back side of the driving body 6 by inserting and crimping the caulking boss 6d of the driving body 6 into the two mounting holes 7a. Further, the contact portion 7b of the movable contact 7 is always in elastic contact with the contact forming surface 1b of the first case 1 so as to be slidable. The movable contact 7 and the fixed contact 9 constitute a switch mechanism. In the initial state, the contact portion 7b is elastically contacted with the contact forming surface 1b at a position separated from the fixed contact 9, so that the switch-off state is established. However, when the driving body 6 rotates to a predetermined rotational position, the contact portion 7b comes into contact with the fixed contact 9 and is switched on.

  The rotary sensor 8 is a known rotary variable resistor whose resistance value changes when the rotor portion 8a rotates. Since the rotor portion 8a is splined to the rear end portion (D cut portion) of the rotating shaft 5b of the operating body 5 and rotates integrally with the rotating shaft 5b, the rotational position information of the operating body 5 is the rotary sensor. 8 can be detected. However, when the switch mechanism is in the OFF state, the detection operation is not performed because the energization of the rotary sensor 8 is cut off.

  As shown in FIG. 6, the rotary electric component with a switch configured in this way is inserted with the engagement pressing portion 4 a of the leaf spring 4 at one end in the circumferential direction in the notch portion 5 a of the operating body 5 in the initial state. Thus, the engagement pressing portion 4 a is engaged with the cam protrusion 6 b at one end portion in the circumferential direction of the driven portion 6 a of the driving body 6. In this initial state, the operating body 5 and the driving body 6 are in a positional relationship as shown in FIG. 9, and the engagement pressing portion 4 a which is omitted in the figure is inserted into the clearance C. In the initial state, the operating body 5 can be rotated in the clockwise direction of FIG. 9, and the counterclockwise rotation is restricted by the stopper step 2 e of the second case 2. That is, the rotational positions of the operating body 5 and the driving body 6 in the initial state are defined by the engagement pressing portion 4a and the stopper step portion 2e. At this time, the contact portion 7b of the movable contact 7 is separated from the fixed contact 9. Since it is elastically contacted with the contact formation surface 1b at the position, it is in a switch-off state.

  When the operation body 5 in the initial state is rotated in the clockwise direction of FIG. 9 against the engagement pressing portion 4a, first, the leaf spring 4 is bent and the engagement pressing portion 4a rides on the cam protrusion 6b. As shown in FIG. 7, when the engagement pressing portion 4a reaches the top of the cam projection 6b, the elastic force (reaction force) of the leaf spring 4 becomes maximum. At this time, the operating body 5 and the driving body 6 are at the rotational positions shown in FIG. 10, but the engagement pressing portion 4a does not stay on the top of the cam projection 6b, but climbs over the top instantly. A force is applied to the inclined surface of the cam projection 6b from the engagement pressing portion 4a. As a result, the driven portion 6a is driven by the engagement pressing portion 4a and the driving body 6 vigorously self-runs in a direction (clockwise direction) to reduce the clearance C in FIG. Thus, a clearance C is newly formed at the other circumferential end in the notch 5a. And since the contact part 7b of the movable contact 7 slides vigorously on the contact formation surface 1b by the self-running of the driving body 6, the contact part 7b contacts the fixed contact 9 and switches from the switch-off state to the on-state. Will be done quickly. That is, when the operation body 5 at the initial position shown in FIGS. 6 and 9 is rotated to the position shown in FIGS. 7 and 10 against the engagement pressing portion 4a, the drive body 6 is self-propelled and the switch mechanism quickly moves. It is designed to operate on. Further, when the engagement pressing portion 4a gets over the cam projection 6b, the reaction force of the leaf spring 4 is suddenly reduced, so that a click feeling is generated, and it is clear that the user has performed the switching operation to switch on by this click feeling. I can feel it.

  Thus, after the driving body 6 is self-propelled, the operating body 5 being operated for rotation immediately catches up with the driving body 6 and rotates integrally. A corresponding analog signal is output from the rotary sensor 8. For example, different signals are output from the rotary sensor 8 when the operating body 5 is rotated to the position shown in FIG. 12 and when the operating body 5 is rotated to the limit position of the allowable rotation range shown in FIG. The

  In order to return the operating body 5 rotated as described above to the initial rotational position (initial position), the operating body 5 may be rotated counterclockwise in FIGS. 12 and 13. Also in this case, when the engagement pressing portion 4a gets over the cam projection 6b, the elastic force of the leaf spring 4 is applied from the engagement pressing portion 4a to the inclined surface of the cam projection 6b, and the driving body 6 is rotated counterclockwise. Since it runs vigorously, switching from the switch-on state to the off-state is performed quickly.

  As described above, in the rotary electrical component with a switch according to the present embodiment, when the operating body 5 is rotated to a predetermined rotational operation position, the elastic force of the engagement pressing portion 4a that has overcome the cam projection 6b. The driven portion 6a is driven so that the driving body 6 is self-propelled, and the contact portion 7b of the movable contact 7 attached to the driving body 6 is quickly brought into contact with the fixed contact 9 (or Therefore, the switching mechanism can be quickly turned on and off. Further, since the movable contact 7 is composed of a slider piece that is slidably elastically contacted with the contact forming surface 1b, even if the drive body 6 is self-propelled and the movable contact 7 comes into contact with the fixed contact 9, the bounce is performed. There is no risk of generating. Since the rotary position information of the operating body 5 can be detected by the rotary sensor 8 in the switch-on state in which the movable contact 7 is in sliding contact with the fixed contact 9, the rotary electric component with the switch By performing the rotation operation, a signal corresponding to the rotation operation angle can be output after the power source is switched on. In the present embodiment, a variable resistor is used as the rotary sensor 8, but an encoder or the like may be used.

  In addition, in the rotary electrical component with a switch according to the present embodiment, the engagement pressing portion 4a that engages and disengages with the cam protrusion 6b is formed in a part of the leaf spring 4, and the elastic spring is caused by the deflection of the leaf spring 4. Since the force is generated, the driven portion 6a can be driven with a strong force by the engagement pressing portion 4a that has overcome the cam projection 6b, and a very clear click feeling can be generated. Therefore, the on / off switching operation of the switch mechanism can be performed very quickly and the user can easily feel the operation timing. Moreover, since the leaf spring 4 having the engagement pressing portion 4a can be easily incorporated into the housing 3, the assembly workability can be greatly improved as compared with the case where a wire spring provided with a pretension is incorporated. However, it is also possible to use a pressing element incorporated in the recess of the housing via a coil spring or the like as the engagement pressing portion.

  Further, in the rotary electric component with a switch according to the present embodiment, the driven portion 6a of the driving body 6 is provided with a narrow rail surface 6c serving as the sliding surface of the engagement pressing portion 4a, and the operation body 5 is provided. Since the narrow rail surface 5e which becomes the sliding surface of the engagement pressing portion 4a is provided on the inner peripheral side of the rail surface 6c, and a part of both the rail surfaces 6c and 5e are adjacent at substantially the same height, The engagement pressing portion 4a that slides on one rail surface 6c (or 5e) during the rotation operation can be smoothly transferred onto the other rail surface 5e (or 6c), and a good operational feeling can be expected. . The rail surface 5e of the operating body 5 may be adjacent to the outer peripheral side of the rail surface 6c of the drive body 6, and the rail surfaces 6c and 5e may be configured to have substantially the same height over the entire length. May be.

  In the present embodiment, the operating body 5 is provided with a guide surface 5d as a sliding surface of the engagement pressing portion 4a in a region excluding the notch portion 5a, and the rail surface 5e is made continuous with the guide surface 5d. Therefore, the play of the operation body 5 can be prevented by the engagement pressing portion 4a, and a good operation feeling can be expected also in this respect.

1 First case (housing)
DESCRIPTION OF SYMBOLS 1a Bearing part 1b Contact formation surface 2 2nd case (housing)
2a Shaft hole 4 Leaf spring 4a Engagement pressing portion 5 Operation body 5a Notch portion 5b Rotating shaft 5d Guide surface 5e Rail surface (second rail surface)
6 Driving body 6a Driven portion 6b Cam projection 6c Rail surface (first rail surface)
7 movable contact 7b contact 8 rotary sensor 9 fixed contact C clearance

Claims (4)

A housing, an operating body having a notch and rotatably supported by the housing; a driven body provided with a driven portion having a cam projection and capable of being driven to rotate by the operating body; and the driven A switch composed of an engagement pressing portion that is elastically biased toward the portion and can be engaged with and disengaged from the cam protrusion, a fixed contact provided on the housing, and a movable contact provided on the drive body, and the operation A rotary sensor for detecting rotational position information of the body,
The movable contact is provided so as to be slidable with respect to the fixed contact, and the driving body arranges the driven part in the notch with a clearance in the circumferential direction with respect to the operating body. It can be rotated only by the clearance,
When the driving body is driven by the rotationally operated operation body and the driving body reaches a predetermined rotational position and the engagement pressing portion gets over the cam projection, the driven portion is subjected to the elastic force of the engagement pressing portion. A rotating electrical component with a switch, wherein the drive body is driven by the self-running and the switch is switched. 2. The rotary electrical component with a switch according to claim 1, wherein the engagement pressing portion is formed in a part of a leaf spring. 3. The first rail surface according to claim 1 or 2, wherein the driven portion is provided with a first rail surface serving as a sliding surface of the engagement pressing portion, and the operating body is provided on an inner peripheral side or an outer peripheral side of the first rail surface. A second rail surface serving as a sliding surface of the engagement pressing portion is provided, and the first and second rail surfaces extend so that the engagement pressing portion straddles the first and second rail surfaces. A rotating electrical component with a switch, wherein at least a part of the rotating electrical components are adjacent to each other at substantially the same height. The guide body according to claim 3, wherein the operating body is provided with a guide surface that extends on substantially the same circumference as the cam protrusion and serves as a sliding surface of the engagement pressing portion in a region excluding the notch portion. A rotating electrical component with a switch, wherein the second rail surface is continuous with a guide surface.

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