Mobile wheel mechanism and cleaning equipment

Abstract

This application relates to the technical field of cleaning equipment, and in particular to a moving wheel mechanism and a cleaning unit; the moving wheel mechanism comprises a set of moving wheels, a cam, and a drive assembly. The drive assembly is fixed to the first housing of the cleaning unit, and the drive assembly is connected to the cam. The cam fits into the set of moving wheels, and the set of moving wheels is connected by sliding motion to the second housing of the cleaning unit, with the direction of sliding motion being vertical. (Figure 1)

Description

Title of the invention: Moving wheel mechanism and cleaning equipment. Technical field

[0001] The present application relates to the technical field of cleaning equipment, and in particular a moving wheel mechanism and cleaning equipment.

[0002] Fundamental technique

[0003] When moving the cleaning equipment, in order to maintain balance and normal operation, the distance between the bottom of the cleaning equipment and the ground must not be too great; but in certain special cases, the distance between the bottom and the ground is too close, which affects the operation of the cleaning equipment; for example, when encountering obstacles, a bottom that is too low causes the failure to cross obstacles; in the case of deep water, a bottom that is too low causes water to penetrate the cleaning equipment and damage the latter.

[0004] Content of the invention

[0005] In response to the aforementioned problems of the existing technique, the present application designs a movable wheel mechanism, more specifically, the movable wheel assembly is driven by the cam to slide relative to the second housing, which varies the height difference between the movable wheel assembly and the second housing, and therefore the distance between the body of the cleaning equipment and the ground.

[0006] In order to solve the above-mentioned problem, the present application provides a moving wheel mechanism comprising a moving wheel assembly, a cam and a drive assembly.

[0007] Said drive assembly is connected by attachment to a first housing of a cleaning equipment, and said drive assembly is connected by drive to the cam;

[0008] Said cam fits into said set of movable wheels, which is connected by sliding to a second housing of said cleaning equipment and the direction of sliding is in the direction of height.

[0009] Preferably, said drive assembly comprises a drive unit and a transmission shaft, said drive unit being fixed to said first housing, said drive unit is connected in drive to one end of said transmission shaft, and another end of said transmission shaft is connected to said first housing via the bearing structure;

[0010] Said cam is connected by attachment to said transmission shaft.

[0011] Preferably, said movable wheel assembly comprises a snap-fit ​​pressure plate, a sliding sleeve, a movable wheel mounting seat and a movable wheel, said movable wheel being mounted on the movable wheel mounting seat;

[0012] Said sliding sleeve is connected by sliding to said second housing and said sliding sleeve is connected to the mounting seat of said movable wheel;

[0013] Said cam fits into said insertion pressure plate, said insertion pressure plate is fixed to said sliding sleeve.

[0014] Preferably, said assembly of movable wheels further includes an elastic element, one end of said elastic element is connected to the interlocking pressure plate, the other end of said elastic element is connected to said second housing.

[0015] Preferably, an inclined plane and a horizontal plane are placed on said interlocking pressure plate, said inclined plane is adjacent to said horizontal plane and said inclined plane is higher than said horizontal plane.

[0016] Preferably, a snap-fit ​​pulley is placed on said cam, which snaps into the snap-fit ​​pressure plate by means of said snap-fit ​​pulley.

[0017] Preferably, said cam comprises a distal central end away from said transmission shaft and a proximal central end close to said transmission shaft, the interlocking pulley is placed on said distal central end.

[0018] Preferably, said cam fits into said insertion pressure plate by the curvature surface of said cam.

[0019] Preferably, a universal rotating shaft is placed on the mounting seat of said movable wheel, and a mounting hole for the rotating shaft is placed in said sliding sleeve;

[0020] The mounting seat of said movable wheel is rotationally connected to said sliding sleeve via said universal rotating shaft and the mounting hole of said rotating shaft.

[0021] Preferably, an anti-disengagement locking structure is placed in the mounting hole of said rotating shaft and the mounting hole of said rotating shaft is fixed to the outside of said universal rotating shaft;

[0022] Said anti-disengagement locking structure fits into said universal rotating shaft.

[0023] On the other hand, the present application also provides cleaning equipment, said cleaning equipment includes the moving wheel mechanism described above, a first housing and a second housing.

[0024] Thanks to the technical solution described above, the moving wheel mechanism described in this application has the following beneficial effects: By attaching the drive assembly to the first housing, the cam fits into the mobile wheel assembly, which is connected by sliding to the second housing in the vertical direction. This allows the cam to rotate under the drive of the drive assembly, causing the mobile wheel assembly to slide relative to the second housing under the action of the engagement force. This varies the height difference between the mobile wheel assembly and the second housing, and thus the distance between the body of the cleaning equipment and the ground, to meet the needs of different operating scenarios of the cleaning equipment. In other words, it improves the flexibility of the mobile wheel mechanism and the operation of the cleaning equipment.

[0025] The height difference between the moving wheel assembly and the second housing can be modified by placing the cam and the drive assembly, which avoids the use of complex structures such as a lead screw, and thus simplifies the varied mechanical structure of the bottom of the cleaning equipment and reduces the manufacturing cost of the moving wheel mechanism.

[0026] Description of Accompanying Figures

[0027] In order to illustrate more clearly the technical solutions of this application, a brief description of the accompanying figures to be used in the description of the existing embodiments or technique will be given below. It is evident that the accompanying figures in the description below are only some of the embodiments of this application, and for ordinary technicians in the field, other accompanying figures can be obtained on the basis of these figures without any creative work.

[0028] The [Fig. 1] is a structural map of the moving wheel mechanism provided by the embodiment of the present application;

[0029] The [Fig.2] is a structural map of the drive assembly in the moving wheel mechanism provided by the embodiment of the present application;

[0030] The [Fig.3] is an assembly diagram of the bearing support in the moving wheel mechanism provided by the embodiment of the present application;

[0031] The [Fig.4] is a structural map of the set of moving wheels in the moving wheel mechanism provided by the embodiment of the present application;

[0032] The [Fig.5] is a structural map of the interlocking pressure plate in the moving wheel mechanism provided by the embodiment of the present application;

[0033] The [Fig.6] is a structural map of the cam in the moving wheel mechanism provided by the embodiment of the present application;

[0034] Figure 7 is a structural map of the cam in the moving wheel mechanism provided by another method of implementing this request;

[0035] Fig. 8 is a cross-sectional view of the assembly of the sliding sleeve and the mounting seat of the movable wheel in the movable wheel mechanism provided by the embodiment of the present application.

[0036] 1 - assembly of movable wheels, 11 - interlocking pressure plate, 111 - plan inclined, 112 - horizontal plane, 12 - sliding sleeve, 121 - rotating shaft mounting hole, 122 - anti-stall locking structure, 13 - movable wheel mounting seat, 131 - universal rotating shaft, 14 - movable wheel, 15 - elastic element, 2 - cam, 21 - interlocking pulley, 22 - pulley shaft, 3 - drive assembly, 31 - drive unit, 32 - transmission shaft, 33 - bearing assembly, 34 - coupling, 4 - first housing, 41 - servo motor mounting housing, 42 - bearing support, 5 - second housing.

[0037] Specific embodiments

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below, in conjunction with the accompanying figures for the embodiments of this application. It is understood that the embodiments described represent only a portion of the embodiments of this application, and not all of them. Based on the embodiments of this application, all other embodiments obtained by ordinary technicians in the field without any creative work fall within the scope of protection of this application.

[0039] The term "an embodiment" or "embodyments" herein means a particular feature, structure, or characteristic that can be included in at least one embodiment of this application. In the description of this application, it is understood that the terms "top," "bottom," "left," "right," "top," "bottom," etc., indicate orientations or positional relationships based on those illustrated in the accompanying figures, solely for the purpose of facilitating and simplifying the description of this application, and are not intended to indicate or imply that the devices or elements mentioned must have a particular orientation and be constructed and operated in a particular orientation, and therefore cannot be interpreted as a limitation of this application.Furthermore, the terms "first" and "second" are used solely for descriptive purposes and should not be interpreted as indicating or implying relative importance or implicitly specifying the number of technical features listed. Therefore, a feature defined as "first" or "second" may expressly or implicitly include one or more such features. In addition, the terms "first" and "second," etc. are used to distinguish similar objects and do not necessarily have to be used to describe a particular sequence or order of priority. It is understood that the data thus used may be interchangeable, where appropriate, so that the embodiments of this application described herein may be implemented in a sequence other than those illustrated or described herein.

[0040] In combination with [Fig. 1], a movable wheel mechanism provided by the embodiment of the present application is described. The movable wheel mechanism comprises a set of movable wheels 1, a cam 2 and a drive assembly 3; the drive assembly 3 is connected by a fixed attachment to the first housing 4 of the cleaning equipment; the drive assembly 3 is connected by a drive to the cam 2; the cam 2 fits into the set of movable wheels 1; the set of movable wheels 1 is connected by a sliding motion to the second housing 5 of the cleaning equipment, and the direction of the sliding motion is in the direction of height.

[0041] In the embodiment of the present application, the mobile wheel assembly 1 is always in contact with the ground, and the second mobile wheel assembly 1 is used to drive the movement of the cleaning equipment; the cam 2 is used to drive the second mobile wheel assembly 1 to slide relative to the second housing 5 under the drive of the drive assembly 3; and the drive assembly 3 is used to drive the rotation of the cam 2.

[0042] In the specific embodiment of the present application, the first housing 4 and the second housing 5 refer to two different housing structures; preferably, the first housing 4 can be connected by disassembly to the second housing 5.

[0043] In another preferred embodiment of the present application, the first housing 4 is connected by fastening to the second housing 5; preferably, the first housing 4 is molded integrally with the second housing 5.

[0044] In another specific embodiment of the present application, in the case where the first housing 4 is molded integrally with the second housing 5, it is understood that the first housing 4 and the second housing 5 refer to two different parts of the same housing.

[0045] In the specific embodiment of the present application, the first housing 4 and the second housing 5 are both housings located at the bottom of the cleaning equipment, and the body of the cleaning equipment moves relative to the ground with the movement of the second housing 5. More specifically, in the case where the second housing 5 moves in the opposite direction to the mobile wheel assembly 1, the body of the cleaning equipment moves in the opposite direction to the ground; and in the case where the second housing 5 moves closer to the mobile wheel assembly 1, the cleaning equipment moves closer to the ground.

[0046] In the embodiment of the present application, by connecting the drive assembly 3 to the first housing 4 by fixing, the cam 2 fits into the movable wheel assembly 1 and the movable wheel assembly 1 is connected by sliding to the second housing 5 in the direction of height, so as to be able to rotate the cam 2 under the drive of the drive assembly 3, so that the movable wheel assembly 1 slides relative to the second housing 5 under the action of the fit force; by varying the height difference between the movable wheel assembly 1 and the second housing 5, and thus the distance between the body of the cleaning equipment and the ground to meet the needs of the different operating scenarios of the cleaning equipment, in other words, to improve the flexibility of the movable wheel mechanism and the operation of the cleaning equipment.

[0047] In the embodiment of the present application, the height difference between the movable wheel assembly 1 and the second housing 5 can be modified by placing the cam 2 and the drive assembly 3, which avoids the use of complex structures such as a lead screw, and thus simplifies the varied mechanical structure of the bottom of the cleaning equipment and reduces the manufacturing cost of the movable wheel mechanism.

[0048] Referring to Figures 1 and 2, in the embodiment of the present application, the drive assembly 3 comprises a drive unit 31 and a transmission shaft 32, the drive unit 31 is connected by attachment to the first housing 4, the drive unit 31 is connected by drive to one end of the transmission shaft 32, and the other end of the transmission shaft 32 is connected to the first housing 4 via a bearing structure; and the cam 2 is connected by attachment to the transmission shaft 32.

[0049] In the embodiment of the present application, the drive unit 31 is used to drive the transmission shaft 32 to rotate, and the transmission shaft 32 is used to drive the cam 2 to move under the drive of the drive unit 31; the other end of the transmission shaft 32 is connected to the first housing 4 through a bearing structure to characterize the transmission shaft 32 to be able to rotate relative to the first housing 4; more specifically, the transmission shaft 32 is placed in the horizontal direction, and the cam 2 is mounted on the transmission shaft 32 and the corresponding bearing assemblies 33 are placed on the two sides of the cam 2 respectively; more specifically, the bearing assembly 33 comprises two circlips and one bearing.

[0050] In the embodiment of the present application, by placing the drive assembly 3 as the drive unit 31 and the drive shaft 32 to drive the rotation of the cam 2 and achieving the drive of the cam 2 via a simple structure, which in turn simplifies the varied mechanical structure of the bottom of the cleaning equipment and reduces the manufacturing cost of the moving wheel mechanism.

[0051] In the specific embodiment of the present application, the drive unit 31 is connected to the transmission shaft 32 via the coupling 34.

[0052] In the specific embodiment of the present application, the drive unit 31 may be a servomotor, and the servomotor may precisely control the position or angle of drive; preferably, the height difference between the movable wheel assembly 1 and the second housing 5 may be set to a minimum when the drive angle is 0°; the height difference between the movable wheel assembly 1 and the second housing 5 may be set to a maximum when the drive angle is 90°.

[0053] In the specific embodiment of the present application, the first housing 4 comprises a servomotor mounting housing 41, the servomotor is fixed to the servomotor mounting housing 41.

[0054] In another specific embodiment of the present application, the cam 2 can be transformed into a camshaft, in which case the drive unit 31 can directly drive the rotation of the cam 2.

[0055] Referring to [Fig.3], in the specific embodiment of this application, the first housing 4 further comprises a bearing support 42, in which the other end of the transmission shaft 32 is connected to the bearing support 42 via the bearing structure; preferably, a placement space for the protection of the cam 2 is placed on the bearing support 42.

[0056] In another specific embodiment of the present application, the drive unit 31 may also be a drive motor.

[0057] Referring to [Fig.4], in the embodiment of the present application, the movable wheel assembly 1 comprises a press-fit plate 11, a sliding sleeve 12, a movable wheel mounting seat 13, and a movable wheel 14, the movable wheel 14 is mounted on the movable wheel mounting seat 13; the sliding sleeve 12 is connected by sliding to the second housing 5, and the sliding sleeve 12 is connected to the movable wheel mounting seat 13; and the cam 2 fits into the press-fit plate 11, the press-fit plate 11 is fixed to the sliding sleeve 12.

[0058] In the embodiment of the present application, the insertion pressure plate 11 is used to transmit the insertion force of the cam 2 to the sliding sleeve 12 in order to slide the sliding sleeve 12 relative to the second housing 5.

[0059] In the specific embodiment of the present application, the cam 2 has a height greater than the ground clearance of the interlocking pressure plate 11. In the case where the ground clearance height of the cam 2 is greater than that of the interlocking pressure plate 11 and the cam 2 presses on the interlocking pressure plate 11 in the direction of the ground, the sliding sleeve 12 slides relative to the second housing 5, and the mobile wheel assembly 1 moves in the opposite direction to the second housing 5, and the body of the cleaning equipment moves in the opposite direction to the ground, raising the cleaning equipment.

[0060] In the specific embodiment of the present application, a sliding block is placed on one of the sliding sleeve 12 or the second housing 5, a sliding groove on the other, and the sliding block is cooperatively connected to the sliding groove; more specifically, the sliding block can be placed on the sliding sleeve 12, and the sliding groove can be placed on the second housing 5; alternatively, the sliding block can be placed on the second housing 5, and the sliding groove can be placed on the sliding sleeve 12.

[0061] In the specific embodiment of the present application, the interlocking pressure plate 11 is molded integrally with the sliding sleeve 12.

[0062] In the specific embodiment of the present application, the mounting seat of the movable wheel 13 can rotate relative to the sliding sleeve 12, so at that time the movable wheel 14 is a universal wheel.

[0063] In another specific embodiment of the present application, the sliding sleeve 12 can also be connected by attachment to the mounting seat of the movable wheel 13, the movable wheel 14 is then a directional wheel.

[0064] In the embodiment of the present application, by placing the press plate 11 and the sliding sleeve 12 in the wheel assembly 1, the cam 2 is inserted into the press plate 11, and the sliding sleeve 12 is connected by sliding to the second housing 5, so as to achieve the change of the height difference between the wheel assembly 1 and the second housing 5 via a simple structure, which makes it possible to avoid the use of complex structures such as a lead screw, and thus to simplify the varied mechanical structure of the bottom of the cleaning equipment and to reduce the manufacturing cost of the wheel mechanism.

[0065] In the embodiment of the present application, the mobile wheel assembly 1 further comprises an elastic element 15, one end of the elastic element 15 is connected by attachment to the press plate of the socket, the other end of the elastic element 15 is connected by attachment to the second housing 5.

[0066] In the embodiment of the present application, the elastic element 15 is used to provide a rebound force in the event of movement of the assembly of movable wheels 1 near the first housing 4.

[0067] In the embodiment of the present application, the adjustment of an elastic element 15 in the mobile wheel assembly 1 allows, in the event of movement of the mobile wheel assembly 1 near the first housing 4, to provide a rebound force in order to avoid depending on the sole gravity of the cleaning equipment to fall back and the mechanical wear in the process of its own fall, and to improve the reliability of the mobile wheel mechanism and the cleaning equipment.

[0068] Referring to [Fig.5], in the embodiment of the present application, an inclined plane 111 and a horizontal plane 112 are placed on the interlocking pressure plate 11, the inclined plane 111 is adjacent to the horizontal plane 112 and the inclined plane 111 is higher than the horizontal plane 112.

[0069] In the specific embodiment of the present application, where the cam 2 fits into the inclined plane 111, the height difference between the mobile wheel assembly 1 and the second housing 5 is a first height difference; where the cam 2 fits into the horizontal plane 112, the height difference between the mobile wheel assembly 1 and the second housing 5 is a second height difference; it is provided that the first height difference is smaller than the second height difference; given that the mobile wheel assembly 1 is always in contact with the ground, if the ground clearance of the second mobile wheel assembly 1 is set to zero, the first height difference as well as the second height difference can be equal to the ground clearance of the bottom of the cleaning equipment;In other words, if the cam 2 fits into the inclined plane 111, the ground clearance of the bottom of the cleaning equipment is less than if the cam 2 fits into the horizontal plane 112.

[0070] In the specific embodiment of this application, the inclined plane 111 may be an inclined plane or an inclined curved surface.

[0071] In the embodiment of the present application, the inclined plane 111 is placed to use the difference in height between the inclined plane 111 and the horizontal plane 112 to have an effect on the variation of the difference in height between the set of movable wheels 1 and the second housing 5, thus avoiding the variation of the difference in height depending solely on the variation of the curvature of the cam 2 themselves, and also being able to reduce the effect of wear of the cam 2 causing the appearance of an error in the variation of the difference in height, and improve the reliability of the movable wheel mechanism and thus of the cleaning equipment.

[0072] Refer to [Fig. 6], in the embodiment of this application, a pulley The swaging is placed 21 on the cam 2, the cam 2 swages into the swaging pressure plate 11 via the swaging pulley 21.

[0073] In the embodiment of the present application, the interlocking pulley 21 is positioned to reduce friction during the rotation of the cam 2, reduce wear on the surface of the cam 2, and thus improve the reliability of the cleaning equipment; furthermore, the arrangement of the interlocking pulley 21 can also reduce the drive force required to drive the movement of the cam 2 on the interlocking pressure plate 11.

[0074] In the specific embodiment of the present application, the swaged pulley 21 is mounted on the cam 2 via the pulley shaft 22.

[0075] In the embodiment of the present application, the cam 2 comprises a distal central end away from the transmission shaft 32 and a proximal central end close to the transmission shaft 32, the interlocking pulley 21 is placed on the distal central end.

[0076] In the specific embodiment of the present application, the distal central end of the cam 2 is a swaging plane, and in the case where the swaging pulley 21 moves to a predefined position, the cam 2 swages into the horizontal plane 112 through the swaging plane; by placing the swaging plane at the distal central end, it is thus possible to achieve self-locking of the cam 2 in the case of drive at the predefined angle to avoid a continuous drive force output in order to reduce the energy loss of the cleaning equipment.

[0077] Refer to [Fig.7], in another embodiment of the present application, the cam 2 fits into the insertion pressure plate 11 by the curvature surface of the cam 2.

[0078] In another specific embodiment of the present application, it is possible to reduce the size of the moving wheel mechanism by having the cam's curvature surface 2 fit directly into the fitting pressure plate 11, while the force arm is shorter, which reduces the load on the drive unit.

[0079] In another specific embodiment of the present application, in the case where the cam 2 fits into the fitting pressure plate 11 by the curvature surface of the cam 2, the fitting pressure plate 11 may have only one horizontal plane 112, which further reduces the size of the moving wheel mechanism.

[0080] In another specific embodiment of the present application, the height difference between the movable wheel assembly 1 and the second housing 5 is a third height difference in the case where the cam 2 fits into the plate of the interlocking pressure 11 through the cam's curvature surface 2, the interlocking pressure plate 110 has and has only one horizontal plane 112, and the distal central end of the cam 2 interlocks in the interlocking pressure plate 11; the height difference between the moving wheel assembly 1 and the second housing 5 is a fourth height difference in the case where the cam 2 interlocks in the interlocking pressure plate 11 through the cam's curvature surface 2, the interlocking pressure plate 110 has and has only one horizontal plane 112, and the proximal central end of the cam 2 interlocks in the interlocking pressure plate 11; the third height difference is greater than the fourth height difference.

[0081] In another specific embodiment of the present application, in the case where the cam 2 fits into the fitting pressure plate 11 by the curvature surface of the cam 2, an inclined plane 111 and a horizontal plane 112 can be placed on the fitting pressure plate 11.

[0082] Referring to [Fig.8], in the embodiment of the present application, a universal rotary shaft 131 is placed on the mounting seat of the movable wheel 13, and a mounting hole for the rotary shaft 121 is placed on the sliding sleeve 12; the mounting seat of the movable wheel 13 is rotationally connected to the sliding sleeve 12 via the universal rotary shaft 131 and the mounting hole for the rotary shaft 121.

[0083] In the specific embodiment of the present application, the mounting hole for the rotating shaft 121 is placed in the direction of height.

[0084] In the embodiment of the present application, by connecting in rotation the mounting seat of the movable wheel 13 to the sliding sleeve 12 via the universal rotating shaft 131 and the mounting hole of the rotating shaft 121, it is possible to achieve the rotation of the movable wheel 14 relative to the first housing 4, and thus the universal rotation of the movable wheel 14, to improve the reliability of the movable wheel mechanism and the movement of the cleaning equipment.

[0085] In the specific embodiment of the present application, the sliding sleeve 12 comprises a sliding part and a fixing part, wherein the height of the sliding part relative to the ground is greater than the height of the fixing part relative to the ground; the sliding part is connected by fixing to the fixing part by means of fasteners, and the fixing part is used to connect to the mounting seat of the movable wheel 13; preferably, the fasteners are screws.

[0086] In the specific embodiment of this application, the fastening part includes a mounting hole for the rotating shaft 121 and at least one fastening hole, and The sliding part is fixed to the fixing part via at least one fixing hole.

[0087] In the embodiment of the present application, an anti-stall locking structure 122 is placed in the mounting hole of the rotating shaft 121 and the mounting hole of the rotating shaft 121 is fixed to the outside of the universal rotating shaft 131; the anti-stall locking structure 122 is coupled by snap-fit ​​with the universal rotating shaft 131.

[0088] In the embodiment of the present application, the reliability of the mobile wheel mechanism is improved by setting an anti-disengagement locking structure 122 in the mounting hole of the rotating shaft 121, thereby preventing the universal rotating shaft 131 from being disengaged from the connection with the mounting hole of the rotating shaft 121, which improves the reliability of the mobile wheel mechanism and the cleaning equipment.

[0089] The following paragraphs describe the specific operating principle of the moving wheel mechanism in the embodiments of this application.

[0090] Normal operating state of the cleaning device: in the case where the drive angle of the drive unit 31 (servomotor) is a first predefined angle and the interlocking pulley 21 is interlocked in the interlocking pressure plate 11, the interlocking pulley 21 on the distal central end of the cam 2 is interlocked in the inclined plane 111 of the interlocking pressure plate 11; in the case where the cam 2 is interlocked in the interlocking pressure plate 11 through the curvature surface of the cam 2 and the interlocking pressure plate 110 has and only a horizontal plane 112, the proximal central end of the cam 2 is interlocked in the interlocking pressure plate 11; at this point, the height difference between the set of moving wheels 1 and the second housing 5 is minimal to allow the cleaning equipment to be balanced and to function correctly; preferably, the first predefined angle is 0°.

[0091] High state of the bottom of the cleaning equipment: in the case where the drive angle of the drive unit 31 (servomotor) is a second predefined angle and the interlocking pulley 21 interlocks into the interlocking pressure plate 11, the interlocking plane of the distal central end of the cam 2 interlocks into the horizontal plane 112 of the interlocking pressure plate 11; in the case where the cam 2 interlocks into the interlocking pressure plate 11 through the curvature surface of the cam 2 and the interlocking pressure plate 110 has and only a horizontal plane 112, the proximal central end of the cam 2 interlocks into the interlocking pressure plate 11; At this point, the height difference between the second set of movable wheels 1 and the second housing 5 is at its maximum to facilitate overcoming obstacles or other scenarios requiring the elevation of the bottom of the cleaning equipment; preferably, the second predefined angle is 90°; more precisely, from the normal operating state to the raised bottom state, the cam 2 exerts pressure on the interlocking pressure plate 11 towards the ground.

[0092] In addition, the height difference between the mobile wheel assembly 1 and the second housing 5 can also be adjusted in the case where the drive angle of the drive unit 31 (servomotor) is a third predefined angle, the third predefined angle is located between the first predefined angle and the second predefined angle, so that the cleaning equipment can perform a floor elevation to different heights on the basis of the drive angles of the different drive units 31; preferably, 0° < third predefined angle < 90°.

[0093] The movable wheel mechanism in the embodiments of this application has the following beneficial effects: By connecting the drive assembly 3 to the first housing 4, the cam 2 fits into the mobile wheel assembly 1 and the mobile wheel assembly 1 is connected by sliding to the second housing 5 in the direction of height, so that the cam 2 can rotate under the drive of the drive assembly 3, so that the mobile wheel assembly 1 slides relative to the second housing 5 under the action of the fit force, varying the height difference between the mobile wheel assembly 1 and the second housing 5, and thus the distance between the body of the cleaning equipment and the ground to meet the needs of the different operating scenarios of the cleaning equipment, in other words, to improve the flexibility of the mobile wheel mechanism and the operation of the cleaning equipment.

[0094] The height difference between the mobile wheel assembly 1 and the second housing 5 can be modified by placing the cam 2 and the drive assembly 3, which avoids the use of complex structures such as a lead screw, and thus simplifies the varied mechanical structure of the bottom of the cleaning equipment and reduces the manufacturing cost of the second mobile wheel mechanism.

[0095] The embodiment of the present application also provides cleaning equipment which includes a movable wheel mechanism, a first housing 4 and a second housing 5 in the embodiment of the present application.

[0096] In the specific embodiment of this application, the cleaning equipment may be cleaning equipment such as a sweeper or a sweeping robot.

[0097] The preceding description has sufficiently disclosed the specific embodiments of this application. It should be noted that any modification made to the specific embodiments of this application by the engineers Familiarity with the field does not deviate from the scope of the claims of this application. Therefore, the scope of the claims of this application is not limited to the specific embodiments mentioned above.

Claims

Demands

1. A moving wheel mechanism characterized in that it comprises a moving wheel assembly (1), a cam (2) and a drive assembly (3), said drive assembly (3) is connected by attachment to a first housing (4) of a cleaning equipment, and said drive assembly (3) is connected by drive to said cam (2); said cam (2) fits into the moving wheel assembly (1), said moving wheel assembly (1) is connected by sliding to a second housing (5) of said cleaning equipment and the sliding direction is in the direction of height.

2. Moving wheel mechanism according to claim 1, characterized in that said drive assembly (3) comprises a drive unit (31) and a transmission shaft (32), said drive unit (31) being fixed to said first housing (4), said drive unit (31) is connected in drive to one end of said transmission shaft (32), and another end of said transmission shaft (32) is connected to said first housing (4) via a bearing structure; said cam (2) is connected in attachment to said transmission shaft (32).

3. A moving wheel mechanism according to claim 1 or 2, characterized in that said moving wheel assembly (1) comprises a press-fit plate (11), a sliding sleeve (12), a moving wheel mounting seat (13) and a moving wheel (14), said moving wheel (14) being mounted on the mounting seat (13) of said moving wheel; said sliding sleeve (12) being slidably connected to said second housing (5) and said sliding sleeve (12) being connected to the mounting seat (13) of said moving wheel; said cam (2) fitting into said press-fit plate (11), said press-fit plate (11) being fixed to said sliding sleeve (12).

4. Moving wheel mechanism according to claim 3, characterized in that said moving wheel assembly (1) further comprises an elastic element (15), one end of said elastic element (15) is connected to the interlocking pressure plate (11), the other end of said elastic element (15) is connected to said second housing (5).

5. Moving wheel mechanism according to claim 3, characterized in that an inclined plane (111) and a horizontal plane (112) are placed on said interlocking pressure plate (11), said inclined plane (111) is adjacent to said horizontal plane (112) and said inclined plane (111) is higher than said horizontal plane (112).

6. Moving wheel mechanism according to claim 5, characterized in that a swaging pulley (21) is placed on said cam (2), said cam (2) swaging into the swaging pressure plate (11) via said swaging pulley (21).

7. Moving wheel mechanism according to claim 6, characterized in that said cam (2) comprises a distal central end away from said transmission shaft (32) and a proximal central end near said transmission shaft (32), the engagement pulley (21) being placed on said distal central end.

8. Moving wheel mechanism according to claim 3, characterized in that said cam (2) fits into said fitting pressure plate (11) by a curvature surface of said cam (2).

9. A wheel mechanism according to claim 3, characterized in that a universal rotating shaft (131) is placed on the mounting seat (13) of said wheel, and a mounting hole (121) of the rotating shaft is placed in said sliding sleeve (12); the mounting seat (13) of said wheel is rotationally connected to said sliding sleeve (12) via said universal rotating shaft (131) and the mounting hole (121) of said rotating shaft.

10. Moving wheel mechanism according to claim 9, characterized in that an anti-stall locking structure (122) is placed in the mounting hole (121) of said rotating shaft and the mounting hole (121) of said rotating shaft is fixed to the outside of said universal rotating shaft (131); said anti-stall locking structure (122) fits into said universal rotating shaft (131).

11. Cleaning equipment characterized in that it comprises a first housing (4), a second housing (5) and a movable wheel mechanism according to any one of claims 1 to 10.

Images