Rubbing device with walking function

Abstract

The utility model discloses and provides a scrubbing and washing device with a walking function, which comprises a scrubbing and washing device main body, a walking mechanism, a control module and a crawling fixing guide rod, the scrubbing and washing device main body is arranged on the walking mechanism, the control module is arranged in the walking mechanism, and the control module is used for receiving a control instruction and enabling the walking mechanism to execute corresponding actions. The walking mechanism is installed on the crawling fixing guide rod, a user controls the scrubbing and washing device body provided with the walking mechanism to move up and down along the crawling fixing guide rod for positioning through the control module, contact with the scrubbing and washing device body is not needed, the situation that operation is inconvenient such as slipping is overcome, potential safety hazards are reduced, operation is easy, and the use experience of the scrubbing and washing device is improved.

Description

Technical Field

[0001] This disclosure relates to the field of bathing tools technology, and in particular to a bath scrubber with a walking function. Background Technology

[0002] A body scrubber is a tool used to clean the body. It helps people clean hard-to-reach areas more effectively while showering. By moving the user's body, friction is created between the body and the bristles, achieving a thorough cleaning effect.

[0003] In traditional shower scrubbers, users typically adjust their height manually to meet their needs. However, hands can become slippery due to water and shower gel during a shower, making it difficult to operate the scrubber manually. If the scrubber is on, slippage can occur, posing a safety hazard. Therefore, traditional shower scrubbers suffer from problems such as being difficult to operate and slipping, leading to safety risks.

[0004] Therefore, designing a bath scrubber with a walking function is worth paying attention to.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] The purpose of this disclosure is to provide a bath scrubber with a walking function, which at least to some extent overcomes the problems of bath scrubbers with related technologies being difficult to operate and having safety hazards.

[0007] Other features and advantages of this disclosure will become apparent from the following detailed description, or may be learned in part by practice of this disclosure.

[0008] According to one aspect of this disclosure, a bath scrubber with a walking function is provided, comprising:

[0009] The main body of the bath scrubber;

[0010] A walking mechanism, on which the body of the bath scrubber is mounted;

[0011] A control module is provided in the walking mechanism;

[0012] A crawling fixed guide rod is provided, and the walking mechanism is mounted on the crawling fixed guide rod. The control module can control the walking mechanism to move up and down and position itself along the crawling fixed guide rod.

[0013] In one embodiment of the present disclosure, the walking mechanism is installed with the crawling fixed guide rod through gear engagement transmission.

[0014] In one embodiment of the present disclosure, the crawling fixed guide rod is provided with a gear slot, and a crawling gear is engaged with the gear slot and installed in the walking mechanism.

[0015] In one embodiment of the present disclosure, the walking mechanism comprises a walking fixed seat and a crawling assembly, the walking fixed seat is installed on the outer surface of the shower body, the crawling assembly is installed in the walking fixed seat, and the crawling assembly is movable up and down along the crawling fixed guide rod.

[0016] In one embodiment of the present disclosure, the crawling assembly is provided with a walking motor, a driving gear is arranged on the output end of the walking motor, the driving gear is sequentially engaged with a first transmission gear and a second transmission gear through gear engagement, and the crawling gear is coaxially installed with the second transmission gear.

[0017] In one embodiment of the present disclosure, the control module is electrically connected with the walking motor, and the control module controls the start-stop and forward-reverse rotation of the walking motor.

[0018] In one embodiment of the present disclosure, the walking fixed seat is provided with a waist round hole, and the crawling fixed guide rod is arranged in the waist round hole.

[0019] In one embodiment of the present disclosure, the crawling fixed guide rod is a waist round rod.

[0020] In one embodiment of the present disclosure, the walking fixed seat is further provided with a matching groove, and the shower body is clamped into the matching groove.

[0021] In one embodiment of the present disclosure, a wireless remote controller is further included, the wireless remote controller is in communication connection with the control module, and the control module controls the control action of the walking of the shower body.

[0022] The shower provided by the embodiment of the present disclosure has the walking function, the user controls the shower body provided with the walking mechanism to move and position up and down along the crawling fixed guide rod through the control module, no contact with the shower body is needed, the inconvenience such as slipping is overcome, the security risk is reduced, the operation is easy, and the use experience of the shower is improved.

[0023] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are incorporated into and constitute a part of the specification, illustrate preferred embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained from these drawings without creative labor for those skilled in the art.

[0025] Figure 1 The overall structure of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure.

[0026] Figure 2 The exploded structure of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure.

[0027] Figure 3 The walking mechanism of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure. Figure 2 The local enlarged structure of A is shown in the schematic diagram.

[0028] Figure 4 The internal structure of the walking mechanism of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure.

[0029] Figure 5 The front view of the crawling fixed guide rod of the structure of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure.

[0030] Figure 6 The top view of the crawling fixed guide rod of a scrubbing device with walking function is shown in the schematic diagram of the embodiment of the present disclosure.

[0031] 1- Scrubbing device main body, 2- Walking mechanism, 3- Control module, 4- Crawling fixed guide rod;

[0032] 5- Walking fixed seat, 6- Crawling assembly;

[0033] 7- Gear slot, 8- Crawling gear;

[0034] 9- Walking motor, 10- Driving gear, 11- First transmission gear, 12- Second transmission gear;

[0035] 13- Assembly hole, 14- Matching groove;

[0036] 15- Scrubbing head, 16- Magnetic suction head, 17- Mounting seat, 18- Driving motor, 19- Movable rod, 20- Bracket, 21- Angle adjusting assembly, 22- Main shell, 23- Battery compartment, 24- Battery, 25- Battery cover;

[0037] 26- Angle adjusting fixed seat, 27- Angle adjusting rod, 28- Fixed part;

[0038] 29 - first support rod, 30 - second support rod. DETAILED DESCRIPTION

[0039] Example implementations are now described with reference to the following drawings. Example implementations can, however, be implemented in many different forms and should not be construed as limited to the examples set forth herein; rather, these implementations are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example implementations to those skilled in the art. The described features, structures, or characteristics can be combined in one or more implementations.

[0040] Reference Figures 1-6 As shown, one embodiment of the present disclosure provides a scrubbing device with walking function, comprising: a scrubbing device body 1, a walking mechanism 2, a control module 3, a crawling fixed guide rod 4, the scrubbing device body 1 is installed on the walking mechanism 2, the control module 3 is arranged in the walking mechanism 2, the control module 3 is used for accepting control instructions to make the walking mechanism 2 execute corresponding actions, the walking mechanism 2 is installed on the crawling fixed guide rod 4, the control module 3 can control the walking mechanism 2 to move and position up and down along the crawling fixed guide rod 4, and the scrubbing device body 1 walks up and down along the crawling fixed guide rod 4 through cooperation of the walking mechanism 2 and the crawling fixed guide rod 4.

[0041] The movement of the scrubbing device body 1 along the crawling fixed guide rod 4 ensures the stability of the movement, and at the same time, the scrubbing device body 1 can be positioned at any position, meeting the needs of users for different cleaning positions.

[0042] In one embodiment, as shown in the accompanying Figure 4 As shown, the walking mechanism 2 is installed together with the crawling fixed guide rod 4 through gear engagement transmission, the walking mechanism 2 and the crawling fixed guide rod 4 adopt gear engagement as the movement mode, the reaction is rapid and the adjustment is accurate, the walking mechanism 2 will not easily slide after positioning, the structure is stable, and the safety attribute of the scrubbing device is improved.

[0043] In one embodiment, as shown in the accompanying Figure 5 As shown, the crawling fixed guide rod 4 is provided with a gear groove 7, the gear groove 7 is engaged with a crawling gear 8, and the crawling gear 8 is installed in the walking mechanism 2.

[0044] One side of the crawling fixed guide rod 4 with the gear groove 7 cooperates with the crawling gear 8 installed in the crawling assembly 6, the crawling gear 8 is engaged with the gear groove 7 of the crawling fixed guide rod 4, the walking mechanism 2 is driven to move along the crawling fixed guide rod 4 through the crawling assembly 6, so that the scrubbing device body 1 installed on the walking mechanism 2 moves.

[0045] In one embodiment, as shown in the accompanying Figure 1As shown, the walking mechanism 2 includes a walking fixed seat 5 and a crawling component 6. The walking fixed seat 5 is installed on the outer surface of the body 1 of the bath scrubber, and the crawling component 6 is installed in the walking fixed seat 5. The crawling component 6 can move up and down along the crawling fixed guide rod 4.

[0046] In one embodiment, as shown in the appendix Figure 3 As shown, the crawling assembly 6 is equipped with a walking motor 9, and a drive gear 10 is provided on the output end of the walking motor 9. The drive gear 10 is meshed with the first transmission gear 11 and the second transmission gear 12 in sequence. The crawling gear 8 is coaxially mounted with the second transmission gear 12. The walking motor 9 drives the drive gear 10 on the output end to rotate. The drive gear 10 transmits power to the second transmission gear 12 through the first transmission gear 11. The crawling gear 8, which is coaxially mounted with the second transmission gear 12, will rotate with the second transmission gear 12. After the crawling gear 8 meshes with the gear provided on the crawling fixed guide rod 4, the rotating crawling gear 8 will change its position on the gear groove 7 provided on the crawling fixed guide rod 4. The movement is smooth and the speed is controllable by using the gear meshing transmission method.

[0047] In this embodiment, the crawling component 6 can also use a mechanical transmission structure as a power source to provide different power drive modes for the walking mechanism 2, enabling the crawling component 6 to be manually operated and the walking mechanism 2 to have the function of manual mechanical adjustment, which is convenient for use in different usage scenarios.

[0048] Furthermore, the walking motor 9 is installed in the walking fixed base 5, and the walking fixed base 5 is also equipped with a first support rod 29 and a second support rod 30. The first transmission gear 11 is hinged to the walking fixed base 5 through the first support rod 29, and the second transmission gear 12 is hinged to the walking fixed base 5 through the second support rod 30. The drive gear 10 at the output end of the walking motor 9 is located on the same side as the first transmission gear 11 and the second transmission gear 12, and they mesh together. The crawling gear 8, which is coaxially mounted with the second transmission gear 12, is located at both ends of the second support rod 30. When the second transmission gear 12 rotates, it will drive the coaxial crawling gear 8 to rotate synchronously.

[0049] The first support rod 29 and the second support rod 30 provide support for the first transmission gear 11, the second transmission gear 12 and the crawling gear 8.

[0050] In one embodiment, as shown in the appendix Figure 3 As shown, the control module 3 is electrically connected to the walking motor 9, and the control module 3 controls the start, stop and forward / reverse rotation of the walking motor 9.

[0051] In one embodiment, as shown in the appendix Figure 3As shown, the walking fixing seat 5 is provided with a waist round hole, the crawling fixing guide rod 4 is arranged in the waist round hole, and the walking fixing seat 5 is matched with the crawling fixing guide rod 4 through the waist round hole, so that the walking fixing seat 5 is kept stable during movement.

[0052] In one embodiment, as shown in the accompanying drawings, Figure 6 As shown, the crawling fixing guide rod 4 is a waist round rod, and the waist round rod structure of the crawling fixing guide rod 4 can be more smoothly matched with the waist round hole of the walking fixing seat 5.

[0053] In one embodiment, as shown in the accompanying drawings, Figure 3 As shown, the walking fixing seat 5 is further provided with a matching groove 14, and the scrubber body 1 is clamped into the matching groove 14.

[0054] As shown in the accompanying drawings, Figure 3 As shown, the matching groove 14 can also be arc-shaped, so as to better cooperate with the installation of the scrubber body 1, but is not limited thereto. The matching groove 14 can be adapted according to the shape of the scrubber body 1 to achieve the purpose of stable cooperation.

[0055] In one embodiment, a wireless remote controller is further included, which is in communication connection with the control module 3, and controls the control action of the control module 3 on the walking of the scrubber body 1.

[0056] In this embodiment, the wireless remote controller is used to control the movement state of the walking mechanism 2 on the crawling fixing guide rod 4, so as to make the walking mechanism 2 move up and down and be positioned on the crawling fixing guide rod 4.

[0057] In this embodiment, the wireless remote controller is used to control the movement state of the walking mechanism 2 on the crawling fixing guide rod 4, so as to make the walking mechanism 2 move up and down and be positioned on the crawling fixing guide rod 4.

[0058] Preferably, the wireless remote controller is selected, and under the control of the wireless remote controller, the walking direction, speed and stopping position of the scrubber body 1 can be adjusted according to the user's demand. The user can complete the adjustment of the height position of the scrubber through the wireless remote controller, without contacting the scrubber in a slippery environment. On the one hand, it avoids the inconvenience of slippery hands, which leads to the failure of the scrubber to be adjusted in place in time. On the other hand, it prevents the user from being injured by slippery hands when adjusting the height, thereby improving the user experience when using the scrubber.

[0059] In this embodiment, the wireless remote control is a device that controls the device through wireless signals (such as radio waves, infrared rays, etc.). The wireless remote control can be an infrared remote control, a Bluetooth remote control, a WiFi remote control, or other wireless devices, but is not limited to these. Users can operate the device remotely without directly touching the bath sponge.

[0060] The wireless remote controller sends a control command. After receiving the control command, the control module 3 sends a control signal to the walking motor 9, so that the walking motor 9 runs according to the control command received by the control module 3.

[0061] Furthermore, when the bath scrubber with walking function is in use, the crawling fixing rod is installed along the wall. The user controls the control module through the wireless remote control to make the main body of the bath scrubber with walking mechanism move up and down along the crawling fixing rod for positioning. The main body of the bath scrubber moves to the required position according to the user's needs. The person does not need to come into contact with the bath scrubber, thus avoiding slipping.

[0062] In one embodiment, as shown in the appendix Figure 2 As shown, the main body 1 of the body scrubber also includes a brush head 15, a bracket 20, a main housing 22, and an angle adjustment component 21. The brush head 15 is mainly used for cleaning the body. The brush head 15 is installed on the bracket 20. The bracket 20 is connected to the main housing 22. The angle adjustment component 21 is installed between the main housing 22 and the bracket 20, so that the bracket 20 can rotate relative to the main housing 22.

[0063] In one embodiment, the angle adjustment assembly 21 includes an angle adjustment base 27, an angle adjustment rod 28, and a fixing member 28. The angle adjustment rod 28 is rotatably mounted on the angle adjustment base 27. The bracket 20 is installed together with the angle adjustment rod 28. The fixing member 28 is inserted into the main housing 22 to restrict the rotation of the angle adjustment rod 28. The fixing member 28 cooperates with the angle adjustment rod 28 to restrict the rotation of the bracket 20.

[0064] In this embodiment, the first end of the angle adjustment rod 28 is snapped together with the bracket 20. The bracket 20 is rotatably mounted in the angle adjustment fixing seat 27 through the angle adjustment rod 28. The angle adjustment rod 28 and the bracket 20 are mounted together so that the bracket 20 can drive the angle adjustment rod 28 to rotate together when it rotates. The angle adjustment rod 28 and the angle adjustment fixing seat 27 are mounted together so that the bracket 20 is rotatably mounted in the angle adjustment fixing seat 27 through the angle adjustment rod 28.

[0065] In this embodiment, the fixing member 28 can be a component such as a pin, dowel, or bolt that can cooperate with the adjusting part and fix the direction of the angle adjusting rod 28, but it is not limited to this. Figure 2 In the embodiment shown, the fixing member 28 is a pull pin, which is screwed to the main housing 22;

[0066] In this embodiment, the support 20 is fixed by pulling out the pin, when the angle of the support 20 needs to be changed, the pin is rotated outward, the head of the pin is out of the adjusting part of the angle adjusting rod 28, the rotation of the angle adjusting rod 28 is released, at this time, the support 20 assembled with the angle adjusting rod 28 can rotate freely, the support 20 with the brush head 15 is rotated to the desired position, when the rotation of the support 20 is completed, the pin is rotated inward, the head of the pin is re-entered into the adjusting part, the rotation of the angle adjusting rod 28 is limited, the rotation of the support 20 is fixed, and the rotation posture of the brush head 15 is fixed.

[0067] In one embodiment, the movable rod 19 is provided with a mounting seat 17, the mounting seat 17 is clamped and mounted with the movable rod 19, the mounting seat 17 is provided with a driving motor 18, a magnetic suction head 16 is mounted on the output shaft of the driving motor 18, the magnetic suction head 16 is connected and mounted with the brush head 15, the magnetic suction head 16 and the brush head 15 are detachably assembled, the driving motor 18 drives the brush head 15 to rotate, the brush head 15 and the magnetic suction head 16 are assembled by clamping or magnetic suction, and a more convenient disassembly and assembly mode is adopted, so that the brush head 15 is convenient to replace.

[0068] In this embodiment, the magnetic suction head 16 and the brush head 15 are detachably assembled.

[0069] In one embodiment, the main shell 22 is further provided with a battery compartment 23, the battery compartment 23 is provided with a battery 24, the battery 24 is electrically connected with the driving motor 18, the battery 24 supplies power for the driving motor 18, the battery 24 starts the driving motor 18 to drive the brush head 15 to rotate, and the driving motor 18 drives the brush head 15 to continuously wash the user's body, and the main shell 22 is further provided with a battery cover 25, the battery cover protects the battery 24.

[0070] In one embodiment, when the angle of the brush head 15 needs to be adjusted to adapt to the cleaning needs of different parts of the body, the angle adjusting rod 28 can rotate relative to the angle adjusting fixed seat 27, since the support 20 is assembled with the angle adjusting rod 28, when the angle adjusting rod 28 rotates, the support 20 drives the main shell 22 to rotate, so as to change the angle of the brush head 15, and the fixing part 28 penetrates into the main shell 22 and cooperates with the angle adjusting rod 28, so as to limit the rotation of the angle adjusting rod 28, thereby limiting the rotation range of the support 20, so that the brush head 15 can be kept at a suitable cleaning angle, and the user can effectively clean the body.

[0071] In one embodiment, referring to Figure 2The waterproof connection switch (not shown in the figure) is arranged between the scrubbing head 15 and the support 20, and controls the running state of the scrubbing head 15. The waterproof connection switch can be a mechanical waterproof switch, a magnetic control switch, a magnetic induction switch, a Hall sensor, but is not limited thereto. The waterproof connection switch has the characteristics of small size, sensitive induction, and waterproof. The receiving part of the waterproof connection switch is mounted on the support 20, and the sensed part of the waterproof connection switch is mounted on the movable rod 19. The waterproof connection switch is electrically connected with the driving motor 18, and controls the start and stop of the driving motor. The waterproof connection switch can control the driving motor to drive the scrubbing head 15 to rotate.

[0072] With reference to Figure 1 When the movable rod 19 swings towards the main shell 22, the sensed part approaches the receiving part of the waterproof connection switch and enters the induction range of the receiving part of the waterproof connection switch. The waterproof connection switch starts the driving motor to drive the scrubbing head 15 to rotate. After the user's body is close to the scrubbing head 15, the operation is automatically started. When the user's body is away from the scrubbing head 15, the operation is disconnected.

[0073] When the user's body is close to the scrubbing head 15, the scrubbing head 15 rotates. When the user's body is away from the scrubbing head 15, the scrubbing head 15 stops rotating. The working state of the scrubbing head does not affect the up-down running of the walking mechanism 2.

[0074] Further, the walking mechanism 2 and the scrubbing head 15 can be independently or jointly operated.

[0075] In summary, the above-mentioned scrubbing device with a walking function can be controlled by the control module 3 to move the scrubbing device main body 1 along the crawling fixed guide rod 4. The user does not need to contact the scrubbing device main body 1, which overcomes the problem of slipping and improves the user experience. The safety hazard is reduced, the operation is easy, and the use experience of the scrubbing device is improved.

[0076] The user can control the walking of the scrubbing device main body through the wireless remote controller through the control module 3. This design not only overcomes the problem of not easy to operate and slipping in a slippery environment, but also reduces the safety hazard of the user during the operation of the scrubbing device. Under the control of the wireless remote controller, the scrubbing device can walk up and down along the crawling fixed guide rod 4 or be positioned at any point, which is convenient for the user to adjust the height of the scrubbing device according to personal needs.

[0077] The scrubbing device with a walking function not only improves the cleaning effect, but also significantly reduces the safety hazard in operation, providing a more comfortable and safe bathing experience for the user.

[0078] When the turning posture of the washing head 15 needs to be adjusted, the user rotates the fixing member 28, and then the turning angle of the washing head 15 can be adjusted. The support 20 on which the washing head 15 is installed is turned by the angle adjusting rod 28. After the washing head 15 is turned to the required position, the user again cooperates the fixing member 28 with the angle adjusting rod 28 to fix the turning position of the support 20 on which the washing head 15 is installed. The turning adjustment of the washing head 15 is completed.

[0079] The washing head 15 provided on the body of the scrubbing device can be turned and adjusted by the support 20, which increases the range of the body part of the user that can be scrubbed. The body of the scrubbing device 1 cooperates with the walking mechanism 2 and the crawling fixing guide rod 4, so that the user does not need to move greatly to scrub, which meets the user's needs for scrubbing different parts and greatly improves the user's experience of using the scrubbing device. The whole is convenient and flexible to use.

[0080] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses or adaptive changes of this disclosure that follow the general principles of this disclosure and include common knowledge or conventional technical means in the art that are not disclosed in this disclosure. The specification and examples are only regarded as exemplary, and the true scope and spirit of the disclosure are indicated by the appended claims.

Claims

1. A bath scrubber with a walking function, characterized in that, include: Body of the bath scrubber (1); Walking mechanism (2), the body of the bath scrubber (1) is mounted on the walking mechanism (2); Control module (3), wherein the control module (3) is disposed in the walking mechanism (2); The crawling fixed guide rod (4) is used to control the walking mechanism (2) to move up and down along the crawling fixed guide rod (4). The control module (3) can control the walking mechanism (2) to move and position itself along the crawling fixed guide rod (4).

2. The bath scrubber with walking function according to claim 1, characterized in that, The walking mechanism (2) is installed together with the crawling fixed guide rod (4) through gear meshing transmission.

3. The bath scrubber with walking function according to claim 2, characterized in that, The crawling fixed guide rod (4) is provided with a gear groove (7), and the gear groove (7) meshes with a crawling gear (8), which is installed in the walking mechanism (2).

4. The bath scrubber with walking function according to claim 3, characterized in that, The walking mechanism (2) includes a walking fixed seat (5) and a crawling component (6). The walking fixed seat (5) is installed on the outer surface of the body (1) of the bath scrubber. The crawling component (6) is installed in the walking fixed seat (5) and can move up and down along the crawling fixed guide rod (4).

5. The bath scrubber with walking function according to claim 4, characterized in that, The crawling assembly (6) is provided with a walking motor (9), and a drive gear (10) is provided on the output end of the walking motor (9). The drive gear (10) meshes with the first transmission gear (11) and the second transmission gear (12) in sequence. The crawling gear (8) is coaxially mounted with the second transmission gear (12).

6. The bath scrubber with walking function according to claim 5, characterized in that, The control module (3) is electrically connected to the walking motor (9), and the control module (3) controls the starting, stopping and reversing of the walking motor (9).

7. The bath scrubber with walking function according to claim 4, characterized in that, The walking fixing seat (5) is provided with an oval hole, and the crawling fixing guide rod (4) passes through the oval hole.

8. The bath scrubber with walking function according to claim 1, characterized in that, The crawling fixed guide rod (4) is an oval rod.

9. The bath scrubber with walking function according to claim 4, characterized in that, The walking fixed seat (5) is also provided with a mating groove (14), and the body of the scrubbing device (1) is inserted into the mating groove (14).

10. The bath scrubber with walking function according to any one of claims 1 to 9, characterized in that, It also includes a wireless remote controller, which is communicatively connected to the control module (3) to control the movement of the body (1) of the bath scrubber by the control module (3).

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