Negative pressure mechanism of window cleaning machine

Abstract

The utility model discloses a negative pressure mechanism of a window cleaning machine, which comprises a base plate, convex caps which are separated at intervals and far away from the base plate are arranged on one side of the base plate, and exhaust inlets are formed in the convex top ends, far away from the base plate, of the caps; a positioning ring is arranged at the top end, close to the exhaust inlet, of the containing cavity, and the end, away from the positioning ring, of the containing cavity is arranged outside, away from the cap, of the base plate. An embedded motor shell is arranged in the containing cavity, a motor top cover is arranged at the top end, close to the positioning ring, of the motor shell, a plurality of through fixing holes are formed in the motor top cover, a plurality of T-shaped fixing buckles corresponding to the fixing holes in a matched mode are arranged on the positioning ring, and the T-shaped fixing buckles are arranged in the fixing holes in an injection molding mode. The thickness of the negative pressure mechanism is thinner, and the gravity center of the window cleaning machine is close to the working surface, so that the manufacturing cost is reduced, the production and assembly efficiency is improved, and the product yield is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to window cleaning equipment technical field, especially a kind of thin (low height) negative pressure mechanism of window cleaning machine. BACKGROUND

[0002] Window cleaning machine is a kind of window surface by negative pressure adsorption, and on window surface movement carries out cleaning work. In prior art, fan (negative pressure mechanism) in window cleaning machine adopts riveting fan blade on the shaft of motor rear, fan blade+motor mode combination, see the existing fan in the figure Figure 6 , that is, fan blade is installed on the shaft of motor end, motor and fan blade are assembled in parts, so that fan height H is large, fan is very thick (H value is large), in order to accommodate the assembly fan, and then window cleaning machine is also made very thick (very high), gravity center of window cleaning machine is far away from working surface, not conducive to the working environment of window cleaning machine, also affect the stability of window cleaning machine. SUMMARY

[0003] Therefore, it is necessary to provide an improved thin negative pressure mechanism of window cleaning machine for the deficiencies of prior art, the negative pressure mechanism adopts low height (low height) design, compact structure, which is conducive to reducing the size of window cleaning machine, so that the gravity center of window cleaning machine is close to working surface, conducive to the working condition of window cleaning machine, and enhance the working stability of window cleaning machine.

[0004] A kind of negative pressure mechanism of window cleaning machine, the negative pressure mechanism includes chassis;One side of the chassis is provided with the convex cap away from the chassis, and the cap is away from the convex top end of the chassis and is provided with suction port;

[0005] The middle part of the chassis is provided with the accommodation cavity extending protruding towards the suction port, the top end of the accommodation cavity close to the suction port is provided with the positioning ring, the positioning ring of the accommodation cavity and the suction port are provided with the air inlet spacing, and the end of the accommodation cavity away from the positioning ring is arranged on the outside of the chassis away from the cap;

[0006] The motor shell is embedded in the accommodation cavity, the top end of the motor shell close to the positioning ring is provided with the motor top cover, the motor top cover is provided with a plurality of through fixing holes, the positioning ring is provided with a plurality of T-shaped fixing buckles matched with the fixing holes, and the T-shaped fixing buckles are injection molded and arranged in the fixing holes.

[0007] Further, in some embodiments, the side of the chassis away from the cap is provided with the bracket seat, the middle part of the bracket seat is provided with the embedded card barrel, and the copper pipe is embedded in the embedded card barrel.

[0008] Further, in some embodiments, a plurality of fan blades are arranged between the cap and the chassis, and the outer edge end of the cap and the chassis is formed into annular air outlet.

[0009] Further, in some embodiments, the inner end of the fan blade is arranged on the outer wall of the accommodating cavity, and the outer end of the fan blade is arranged on the outer edge of the base plate in an outward arc shape.

[0010] Further, in some embodiments, a shaft core is riveted on the motor top cover, and a top end of the shaft core is clamped in the positioning ring.

[0011] Further, in some embodiments, a stator assembly is sleeved on the copper pipe, and the stator assembly is embedded in the motor shell.

[0012] The negative pressure mechanism is thinner, the window cleaning machine is reduced in thickness, the gravity center of the window cleaning machine is close to a working surface, the working gravity center of the window cleaning machine is more stable, the motor shell is embedded in the fan blade, the bracket seat is plastic-coated copper pipe, and the shaft core is riveted on the motor shell and fixed integrally. The thinner window cleaning machine reduces manufacturing cost, improves production and assembly efficiency, improves product yield, and is more economical and applicable. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is an appearance schematic view of an embodiment of the utility model;

[0014] Figure 2 It is a structure schematic view of a bracket seat part of an embodiment of the utility model;

[0015] Figure 3 It is a schematic view of a window cleaning machine of an embodiment of the utility model;

[0016] Figure 4 It is a structure schematic view of a fan blade part of an embodiment of the utility model;

[0017] Figure 5 It is an assembly schematic view of an embodiment of the utility model;

[0018] Figure 6 It is a schematic view of an existing fan.

[0019] BRIEF DESCRIPTION OF DRAWINGS

[0020] The window cleaning machine 11, the negative pressure mechanism 12, the cap 21, the air suction port 22, the annular air outlet 23, the positioning ring 24, the fixing buckle 25, the base plate 26, the accommodating cavity 27, the fan blade 28, the bracket seat 31, the clamping barrel 32, the motor shell 41, the motor top cover 42, the fixing hole 43, the shaft core 44, the stator assembly 45, and the copper pipe 46. DETAILED DESCRIPTION

[0021] In order to further understand the features, technical means and specific purposes and functions achieved by the utility model, the utility model is described in further detail in combination with the drawings and specific embodiments.

[0022] As Figures 1 to 5As shown, the negative pressure mechanism 12 is installed inside the window cleaning machine 11, the negative pressure mechanism 12 comprises a bottom disc 26, one side of the bottom disc 26 is provided with a convex cap cover 21 which is spaced apart from the bottom disc 26, the convex top end of the cap cover 21 away from the bottom disc 26 is provided with an air suction port 22; a plurality of fan blades 28 are arranged between the cap cover 21 and the bottom disc 26, and the outer edge end of the cap cover 21 and the bottom disc 26 is formed into an annular air outlet 23.

[0023] Further, in one embodiment, the middle part of the bottom disc 26 is provided with a containing cavity 27 which extends towards the air suction port 22, the containing cavity 27 is provided with a positioning ring 24 near the top end of the air suction port 22, and a separation distance is arranged between the positioning ring 24 at the top end of the containing cavity 27 and the air suction port 22, that is, an air inlet distance is arranged between the positioning ring 24 at the top end of the containing cavity 27 and the air suction port 22, and the end of the containing cavity 27 away from the positioning ring 24 is arranged on the outer side of the bottom disc 26 away from the cap cover 21.

[0024] The inner end of the fan blade 28 is arranged on the outer wall of the containing cavity 27, and the outer end of the fan blade 28 is arranged on the outer edge of the bottom disc 26 in an outward arc shape.

[0025] The containing cavity 27 is provided with an embedded motor shell 41, the motor shell 41 is provided with a motor top cover 42 near the top end of the positioning ring 24, the motor top cover 42 is riveted with a shaft core 44, and the top end of the shaft core 44 is embedded and clamped in the positioning ring 24.

[0026] Further, in one embodiment, a plurality of through fixing holes 43 are arranged on the motor top cover 42, and a plurality of T-shaped fixing buckles 25 corresponding to the fixing holes 43 are arranged on the positioning ring 24, and the T-shaped fixing buckles 25 are injection molded and arranged in the fixing holes 43.

[0027] Further, in one embodiment, the side of the bottom disc 26 away from the cap cover 21 is provided with a support seat 31, the middle part of the support seat 31 is provided with an embedded clamping barrel 32, and the clamping barrel 32 is provided with an embedded copper pipe 46.

[0028] The copper pipe 46 is sleeved with a stator assembly 45, the stator assembly 45 is embedded in the motor shell 41, and the negative pressure mechanism 12 is assembled.

[0029] The negative pressure mechanism 12 of the utility model adopts the containing cavity 27 (fan blade 28) injection molding embedded motor shell 41, the support seat 31 plastic copper pipe 46, the shaft core 44 riveting on the top end of the motor shell 41 (integrally arranged), so that the height H of the negative pressure mechanism 12 is reduced, the negative pressure mechanism 12 becomes thinner (H value is small), the thickness of the window cleaning machine 11 is reduced, the working gravity center of the window cleaning machine 11 is closer to the glass window, and the work is more stable.

[0030] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A negative pressure mechanism for a window cleaning machine, the negative pressure mechanism (12) comprising: a chassis (26); characterised in that, One side of the bottom plate (26) is provided with a convex cap (21) spaced apart from the bottom plate (26), and the convex top end of the cap (21) away from the bottom plate (26) is provided with an air suction port (22); The middle part of the bottom plate (26) is provided with a containing cavity (27) extending protruding towards the air suction port (22), the top end of the containing cavity (27) near the air suction port (22) is provided with a positioning ring (24), the positioning ring (24) of the containing cavity (27) is provided with an air inlet spacing between the air suction port (22), and the end of the containing cavity (27) away from the positioning ring (24) is arranged on the outside of the bottom plate (26) away from the cap (21); The containing cavity (27) is provided with an embedded motor shell (41), the top end of the motor shell (41) near the positioning ring (24) is provided with a motor top cover (42), a plurality of through fixing holes (43) are formed in the motor top cover (42), a plurality of T-shaped fixing buckles (25) corresponding to the fixing holes (43) are arranged on the positioning ring (24), and the T-shaped fixing buckles (25) are injection molded and arranged in the fixing holes (43).

2. A negative pressure mechanism for a window cleaning robot according to claim 1, wherein The side of the bottom plate (26) away from the cap (21) is provided with a support seat (31), the middle part of the support seat (31) is provided with an embedded card barrel (32), and the embedded card barrel (32) is provided with an embedded copper pipe (46).

3. A negative pressure mechanism for a window cleaning robot according to claim 1, wherein A plurality of fan blades (28) are arranged between the cap (21) and the bottom plate (26), and the outer edge end of the cap (21) and the bottom plate (26) is formed into an annular air outlet (23).

4. A negative pressure mechanism for a window cleaning robot according to claim 3, wherein The inner end of the fan blade (28) is arranged on the outer wall of the containing cavity (27), and the outer end of the fan blade (28) is arranged on the outer edge of the bottom plate (26) in an outward arc shape.

5. The negative pressure mechanism of a window cleaning robot according to claim 1, wherein The motor top cover (42) is provided with a shaft core (44) riveted thereon, and the top end of the shaft core (44) is embedded and arranged in the positioning ring (24).

6. A negative pressure mechanism for a window cleaning robot according to claim 2, wherein The copper pipe (46) is provided with a stator group (45) sleeved thereon, and the stator group (45) is embedded in the motor shell (41).

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