Quick mounting device for mounting disks and lawn mower

Abstract

The application provides a quick mounting device of mounting disc and a mower, which comprises a connector, a mounting disc, a screw tightening body and a locking body. The connector is mounted on a first shaft and rotates with the first shaft, and a threaded body is arranged on the connector; the mounting disc is mounted on the connector and rotates with the connector, and a through hole is arranged on the mounting disc, and the threaded body passes through the through hole; the screw tightening body is screw-connected and mounted on the threaded body; the locking body is arranged outside the screw tightening body and is rotatably mounted on the mounting disc; and a pressing and screwing device is arranged between the screw tightening body and the locking body. The application has simple structure and improves the problem that the mounting disc is inconvenient to replace during use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, in particular to a quick installation device of a mounting disc and a lawn mower. BACKGROUND

[0002] A robot lawn mower is a robot garden tool for maintaining lawns, which can automatically travel in a mowable area to cut off the vegetation that needs to be removed, so as to realize the lawn trimming and maintenance of home courtyards, public green spaces and the like. A cutter head is an indispensable device on the robot lawn mower, which is rotated by a motor to complete the cutting of weeds. When installing the cutter head, the prior art usually uses screws to lock and fix the cutter head on the mowing motor. However, after the mowing machine works for a certain period of time, the screw head is filled with grass cuttings, soil and other sundries, which increases the difficulty of replacing the cutter head. On the other hand, when mowing, if the knob on the cutter head is entangled with weeds, the entire cutter head cannot rotate. At this time, if the motor continues to drive the cutter head to work, the risk of the cutter head cracking is increased. Therefore, it is necessary to provide a quick installation device of a mounting disc and a lawn mower. SUMMARY

[0003] In view of the deficiencies and shortcomings in the prior art, the present application provides a quick installation device of a mounting disc and a lawn mower, which solves the problem that the mounting disc is inconvenient to replace in the prior art.

[0004] To achieve the above object and other related objects, the present application provides an installation device of a mounting disc, comprising a connector, a mounting disc, a threaded tightening body and a locking body.

[0005] The connector is installed on a first shaft and rotates with the first shaft, and a threaded body is arranged thereon;

[0006] The mounting disc is installed on the connector and rotates with the connector, and a through hole is arranged thereon, and the threaded body passes out of the through hole;

[0007] The threaded tightening body is threadedly connected to the threaded body;

[0008] The locking body is arranged outside the threaded tightening body and is rotatably installed on the mounting disc;

[0009] The threaded tightening body and the locking body are provided with a pressing and twisting device therebetween.

[0010] In an embodiment of the present application, the pressing and twisting device comprises a plurality of first teeth arranged on the threaded tightening body and a plurality of second teeth arranged on the locking body, wherein the locking body can move reciprocally along the axial direction to make the plurality of first teeth and the plurality of second teeth interlock or disengage.

[0011] In an embodiment of the present application, the first shaft is a motor shaft, the seat of the connector is mounted on the motor shaft, and the threaded body is arranged on the side of the seat away from the motor.

[0012] In an embodiment of the present application, the first teeth are arranged on the outer wall of the threaded body, the locking body is provided with a locking cavity, and the second teeth are arranged on the inner wall of the locking cavity and can be axially inserted with the first teeth.

[0013] In an embodiment of the present application, the pressing and screwing device further comprises an elastic body, one end of the elastic body is mounted on the locking body, and the other end is mounted on the connector.

[0014] In an embodiment of the present application, one end of the elastic body is mounted on the locking body, and the other end is mounted on the connector.

[0015] In an embodiment of the present application, the elastic body is a spring.

[0016] In an embodiment of the present application, the end of the spring is mounted on the elastic body mounting groove arranged on the end of the connector towards the locking body.

[0017] In an embodiment of the present application, the locking body is provided with an elastic body mounting column arranged on the side of the threaded body, and the elastic body mounting column is inserted into the inner hole of the spring.

[0018] In an embodiment of the present application, the connector and the mounting disc are connected through a circumferential stop plug-in device.

[0019] In an embodiment of the present application, the circumferential stop plug-in device comprises a seat arranged on the connector and the mounting groove arranged on the mounting disc, the seat and the mounting groove are matched in shape, and the seat is inserted into the mounting groove.

[0020] In an embodiment of the present application, the locking body is provided with a plurality of gripping portions.

[0021] In an embodiment of the present application, the mounting disc is provided with a plurality of elastic clamping claws on the side towards the locking body, and the plurality of elastic clamping claws are circumferentially and uniformly distributed on the outside of the through hole.

[0022] In an embodiment of the present application, a lawn mower is further provided, comprising a shell, a motor and a blade, the mounting disc of the blade is mounted on the motor shaft of the motor through a mounting disc quick mounting device, and the quick mounting device of the mounting disc comprises a connector, a mounting disc, a threaded body and a locking body.

[0023] The connector is installed on the motor shaft and rotates with the motor shaft, and a threaded body is arranged on the connector;

[0024] The mounting disc is installed on the connector and rotates with the connector, and a through hole is arranged on the mounting disc, and the threaded body passes out of the through hole;

[0025] The threaded tightening body is installed on the threaded body;

[0026] The locking body is arranged outside the threaded tightening body and is rotatably installed on the mounting disc,

[0027] The pressing and rotating device is arranged between the threaded tightening body and the locking body.

[0028] In an embodiment of the present application, a mounting cavity is arranged on the side of the housing facing the mounting disc.

[0029] In an embodiment of the present application, a fixing table is arranged outside the mounting cavity, and a plurality of reinforcing ribs are uniformly arranged between the fixing table and the mounting cavity.

[0030] In an embodiment of the present application, the mounting disc is a cutter disc, and a plurality of blades are detachably installed on the cutter disc, and the plurality of blades are uniformly distributed along the circumference of the cutter disc.

[0031] In summary, the quick mounting device of the present application is installed on the shaft, and the connector rotates with the shaft, the threaded tightening body is fixed to the shaft through the threaded connection with the connector, and the locking body is installed outside the side of the threaded body away from the mounting disc. The device not only prevents soil from entering the thread between the threaded tightening body and the connector, but also enables the locking body to be pressed when the mounting disc needs to be replaced, and the threaded tightening body is driven to rotate through the pressing and rotating device, so that the threaded tightening body is tightened or detached. Without the aid of any tool, the mounting disc can be separated from the connector for replacement, and the purpose of quickly and conveniently replacing the mounting disc can be achieved. BRIEF DESCRIPTION OF DRAWINGS

[0032] The features and advantages of the present application will be more clearly understood through the following detailed description taken in conjunction with the accompanying drawings, which are shown by way of illustration and are not to be construed as limiting the present application, and in which:

[0033] Figure 1 An exploded view of the quick mounting device of the mounting disc in an embodiment of the present application is shown;

[0034] Figure 2 A sectional view of the quick mounting device of the mounting disc in an embodiment of the present application is shown;

[0035] Figure 3 A sectional view of the quick mounting device of the mounting disc in an embodiment of the present application is shown; Figure 2 A local enlarged view of the I area in the sectional view is shown;

[0036] Figure 4 shows the installation of the connector and the motor;

[0037] Figure 5 shows the structure of the connector in an embodiment of the application;

[0038] Figure 6 shows the structure of the installation disc and the connector in an embodiment of the application;

[0039] Figure 7 shows the structure of the installation disc and the connector in an embodiment of the application from another angle;

[0040] Figure 8 shows the structure of the installation disc and the screwing body in an embodiment of the application;

[0041] Figure 9 shows the structure of the Figure 8 enlarged view of the middle II area;

[0042] Figure 10 shows the structure of the screwing body in an embodiment of the application;

[0043] Figure 11 shows the structure of the installation disc and the locking body in an embodiment of the application;

[0044] Figure 12 shows the structure of the locking body in an embodiment of the application;

[0045] Figure 13 shows the structure of the connector in an embodiment of the application from another angle;

[0046] Figure 14 shows the structure of the installation disc with the shell in an embodiment of the application;

[0047] Figure 15 shows the structure of the shell in an embodiment of the application.

[0048] Reference signs

[0049] 100. Connector; 101. Base; 102. Threaded body; 103. Motor mounting base; 104. External thread; 105. Elastomer mounting groove; 1031. Guide chamfer; 200. Mounting plate; 201. Mounting platform; 202. Through hole; 203. Elastic claw; 2031. First boss; 204. Mounting groove; 205. Sealing cavity; 300. Thread tightening body; 301. First tooth; 30 2. Threaded cavity; 303. Flanged edge; 304. Internal thread; 400. Locking body; 401. Grip part; 402. Second tooth; 403. Locking cavity; 404. Elastomer mounting post; 405. Second boss; 500. Motor; 501. First shaft; 502. Housing; 503. Mounting cavity; 504. Fixing platform; 505. Reinforcing rib; 600. Elastomer; 700. Blade; 701. Bolt. Detailed Implementation

[0050] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. At the same time, the terms such as "upper," "lower," "left," "right," "middle," and "one" used in this specification are only for clarity of description and are not intended to limit the scope of the present invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the present invention.

[0051] It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the actual number, shape and size of the components, the shape, quantity and proportion of each component can be arbitrarily changed in actual implementation, and the layout of the components may also be more complex.

[0052] like Figures 1 to 6 As shown, Figure 1 The diagram shown is an exploded view of a quick installation device for an installation disk according to an embodiment of the present invention. Figure 2 The diagram shown is a cross-sectional view of a quick-installation device for an installation disk according to an embodiment of the present invention. Figure 3 Displayed as Figure 2 A magnified view of a portion of region I. Figure 4 The diagram shown is a schematic representation of the installation of connector 100 and motor 500 in one embodiment of the present invention. Figure 5 The diagram shown is a structural schematic of connector 100 in one embodiment of the present invention; Figure 6The diagram shows a structural schematic of the connection between the mounting disc 200 and the connector 100 in one embodiment of the present invention. The present invention provides a quick-installation device for the mounting disc and a lawnmower. Using this quick-installation device, when the mounting disc 200 needs to be replaced, the locking body 400 can be pressed down. After pressing down and rotating a certain angle using the pressing and tightening device, the locking body 400 rotates, causing the threaded tightening body 300 to rotate, thereby achieving tightening or loosening of the threaded tightening body 300. The mounting disc 200 can be detached from the connector 100 for replacement without the need for any tools, effectively improving the problem of inconvenient replacement of the mounting disc 200 during use in the prior art.

[0053] like Figure 1 As shown, in one embodiment of the present invention, the mounting device for the mounting plate includes: a connector 100, a mounting plate 200, a threaded tightening body 300, and a locking body 400.

[0054] like Figures 1 to 5 As shown, the connector 100 is mounted on a first shaft 501 and rotates with the first shaft 501. A threaded body 102 is provided on the connector 100. An external thread 104 is provided on the outer wall of the threaded body 102. In one embodiment of the invention, the first shaft 501 is a motor shaft, and the seat 101 of the connector 100 is mounted on the motor shaft. The threaded body 102 is located on the side of the seat 101 facing away from the motor 500. The central axis of the threaded body 102 coincides with the central axis of the seat 101. This ensures that the entire connector 100 structure is more stable and less prone to deformation under external forces. The installation method of the threaded body 102 and the seat 101 is not limited, as long as they are securely fastened and not easily loosened; it can be welding or integral molding. It should be noted that in the following description of the present invention, the first shaft 501 is described as the motor shaft, but it is not limited thereto. The first shaft 501 can also be adapted to other shaft forms suitable for driving the connector 100 to rotate, such as the output shaft of a reducer (not shown in the figure), and is not limited here.

[0055] like Figure 1 , Figures 6 to 7 As shown, Figure 7 This is a schematic diagram showing another angle of connection between the mounting plate 200 and the connector 100 in one embodiment of the present invention. The mounting plate 200 is mounted on the connector 100 and rotates with the connector 100. The mounting plate 200 has a through hole 202, and the threaded body 102 passes through the through hole 202. In one embodiment of the present invention, the mounting plate 200 is disc-shaped, and a mounting platform 201 is formed at its center facing the motor 500. The mounting platform 201 is an annular boss, which is coaxially arranged with the mounting plate 200. When the connector 100 is inserted into the mounting plate 200, the mounting groove 204 located inside the mounting platform 201 is forced to open outward, and the mounting platform 201 can ensure that the mounting groove 204 does not undergo excessive deformation.

[0056] As Figure 1 , Figures 8 to 10 shown, Figure 8 shows the structure schematic diagram of the connection between the mounting disc 200 and the screw tightening body 300 in an embodiment of the present application, Figure 9 shows Figure 8 the partial enlarged view of the region II in FIG. 2, Figure 10 shows the structure schematic diagram of the screw tightening body 300 in an embodiment of the present application. The screw tightening body 300 is threadedly connected to the screw body 102. The screw tightening body 300 is approximately cylindrical in structure, and a screw cavity 302 is formed in the center thereof for the screw body 102 to pass through. An inner thread 304 is arranged on the inner wall of the screw cavity 302, which matches the outer thread on the screw body 102. The edge of the screw tightening body 300 towards the motor 500 side is formed with an outwardly flared abutting portion 303, which abuts against the side of the mounting disc 200 towards the screw tightening body 300.

[0057] As Figure 1 , Figure 9 , Figure 11 and Figure 12 shown, Figure 11 shows the structure schematic diagram of the connection between the mounting disc 200 and the locking body 400 in an embodiment of the present application, Figure 12 shows the structure schematic diagram of the locking body 400 in an embodiment of the present application. The locking body 400 is arranged outside the screw tightening body 300, and is rotatably mounted on the mounting disc 200. A pressing and screwing device is arranged between the screw tightening body 300 and the locking body 400. Only when the locking body 400 is subjected to a certain axial pressing force, the screw tightening body 300 will be driven to rotate through the pressing and screwing device, so as to realize the disassembly or assembly of the mounting disc 200.

[0058] In an embodiment of the present application, the pressing and screwing device comprises a plurality of first teeth 301 arranged on the screwing body 300 and a plurality of second teeth 402 arranged on the locking body 400, wherein the locking body 400 is axially movable to make the plurality of first teeth 301 and the plurality of second teeth 402 engage or disengage. The plurality of first teeth 301 can be arranged on the screwing body 102 and extend linearly along the axis direction parallel to the first axis 501. The plurality of first teeth 301 can be arranged on the screwing body 300 in various forms. In an embodiment of the present application, the plurality of first teeth 301 are arranged on the outer wall of the screwing body 300 in the circumferential direction. The plurality of second teeth 402 extend along the axis direction parallel to the first axis 501. In an embodiment of the present application, the locking body 400 is provided with a locking cavity 403, and the plurality of second teeth 402 are arranged on the inner wall of the locking cavity 403 and can axially engage with the plurality of first teeth 301. The locking body 400 can move towards the screwing body 102 to make the plurality of second teeth 402 engage with the plurality of first teeth 301, or move away from the screwing body 102 to make the plurality of second teeth 402 disengage with the plurality of first teeth 301.

[0059] Please continue to refer to Figure 1 、 Figure 9 、 Figure 11 and Figure 12 The locking cavity 403 is a cylindrical cavity concentric with the locking body 400. The plurality of second teeth 402 can be arranged on the inner wall of the locking cavity 403 in various forms. In an embodiment of the present application, the plurality of second teeth 402 are arranged on the inner wall of the locking cavity 403 in the circumferential direction. The shape of the second teeth 402 matches the shape of the first teeth 301. When the second teeth 402 engage with the first teeth 301, the locking body 400 is mounted on the mounting disc 200. The quick mounting device with the tooth engagement is convenient for dismounting and assembling the locking body 400. Moreover, the plurality of teeth engage with each other to increase the friction between them, so that the locking body 400 is not easy to be detached from the screwing body 102, and the connection tightness is increased.

[0060] As Figure 1 、 Figure 3 and Figure 9As shown, in one embodiment of the present invention, the pressing and turning device further includes an elastic body 600. One end of the elastic body 600 is mounted on the locking body 400, and the other end is mounted on the connector 100. The elastic body 600 can be any suitable material that has an elastic energy storage function and can spring open the locking body 400 after the pressure on the locking body 400 is removed, thereby disengaging the first tooth 301 and the second tooth 402, such as elastic rubber, elastic spring, etc. In one embodiment of the present invention, the elastic body 600 is a spring, for example, a compression spring. When the operator presses the locking body 400, causing the first tooth 301 and the second tooth 402 to interlock, the elastic body 600 is gradually compressed, and the elastic restoring force it applies to the locking body 400 becomes larger and larger. When the first tooth 301 and the second tooth 402 are fully interlocked, the operator releases the locking body 400. At this time, the elastic body 600 pops the locking body 400 outward, thereby disengaging the first tooth 301 and the second tooth 402. At this time, turning the locking body 400 will not cause the threaded tightening body 300 to rotate together. This effectively prevents the threaded tightening body 300 from loosening if weeds or other obstacles get tangled on the locking body 400 while the mounting plate 200 is working.

[0061] like Figure 1 and Figure 5 As shown, in one embodiment of the present invention, an elastic body mounting groove 105 is provided at one end of the connector 100 facing the locking body 400, and the end of the spring is mounted on the elastic body mounting groove 105. The elastic body mounting groove 105 is annular and is disposed inside the threaded body 102. When the end of the spring facing the connector 100 is mounted on the elastic body mounting groove 105, when subjected to a certain pressure from the locking body 400, the spring will push the locking body 400 a certain distance away from the mounting plate 200, so that the first tooth 301 disengages from the second tooth 402.

[0062] like Figure 1 , Figure 3 and Figure 12 As shown, in one embodiment of the present invention, an elastic body mounting post 404 is provided on the side of the locking body 400 facing the threaded tightening body 300, and the elastic body mounting post 404 is inserted into the inner hole of the spring. The elastic body mounting post 404 can be coaxially arranged with the locking body 400, such that the central axis of the elastic body mounting post 404 coincides with the central axis of the locking body 400. A protrusion is formed on the locking body 400. When the operator inserts the locking body 400 onto the mounting plate 200, the end of the spring facing the locking body 400 passes through the elastic body mounting post 404 and abuts against the side of the locking body 400 facing the motor 500. The elastic body mounting post 404 can be inserted into the inner hole of the spring for positioning and installing the spring.

[0063] like Figures 1 to 3As shown, in an embodiment of the present application, the connector 100 and the mounting disc 200 are connected by a circumferential stop plug device. The circumferential stop plug device can be any device suitable for fixing the connector 100 and the mounting disc 200 in the circumferential direction, such as key connection, bolt connection, interference fit, etc. In an embodiment of the present application, in order to make the connector 100 more stable in the mounting disc 200, the circumferential stop plug device includes a seat 101 arranged on the connector 100 and a mounting groove 204 arranged on the mounting disc 200, the seat 101 and the mounting groove 204 are matched in shape, and the seat 101 is plugged into the mounting groove 204. When the connector 100 is clamped into the mounting disc 200, this structure makes it not easy to shake in the mounting disc 200 and cause loosening. Preferably, considering multiple factors such as manufacturing process and stability, the seat 101 can be a hexagonal boss structure, and the mounting groove 204 can be a hexagonal groove structure. During installation, the seat 101 can be embedded into the mounting groove 204, and after the edge of the seat 101 is aligned with the inner wall edge of the mounting groove 204, the seat 101 is pressed downward to be inserted into the mounting groove 204, so as to be relatively fixed in the mounting groove 204. The fastening between the mounting disc 200 and the connector 100 is enhanced, so that they are not easy to loosen. As shown in Figure 1 and Figure 4 In order to ensure that the first shaft 501 is not easy to shake on the connector 100, in an embodiment of the present application, the side of the seat 101 facing the motor 500 is provided with a motor fixing table 103, and the central axis of the motor fixing table 103 coincides with the central axis of the seat 101. In an embodiment of the present application, the connector 100 is interference fit mounted on the first shaft 501. When the first shaft 501 is inserted into the cavity of the motor fixing table 103, the side wall of the first shaft 501 and the inner wall of the motor fixing table 103 are pressed against each other to form an interference fit, realizing power transmission.

[0064] As shown in Figure 8 , Figure 11 and Figure 12 In order to facilitate the installation and removal of the locking body 400, in an embodiment of the present application, a plurality of holding portions 401 are arranged on the locking body 400. The holding portion 401 can be a groove recessed towards the central axis of the locking body 400, or can be any shape that the hand can cover when holding the holding portion 401, and is uniformly distributed on the end face of the locking body 400 away from the mounting disc 200. The recess depth of the holding portion 401 is convenient for the operator to hold and conforms to the ergonomic design. During installation, the operator holds the holding portion 401 and moves the locking body 400 towards the mounting disc 200, so that the plurality of second teeth 402 in the locking body 400 are engaged with the plurality of first teeth 301 in the threaded tightening body 300, thereby realizing the fastening of the locking body 400 and the threaded tightening body 300.

[0065] As shown inFigures 8 to 12 As shown, in one embodiment of the present invention, the mounting plate 200 is provided with a plurality of elastic claws 203 on the side facing the locking body 400. The plurality of elastic claws 203 are evenly distributed circumferentially on the outside of the through hole 202 with the through hole 202 as the center. The elastic claws 203 are rectangular block structures. The end of the elastic claws 203 facing the locking body 400 forms a first boss 2031 that bends away from the first shaft 501. The end of the sidewall of the locking body 400 facing the elastic claws 203 is provided with a second boss 405 that protrudes towards the first shaft 501, and the second boss 405 can match and engage with the first boss 2031. When the first tooth 301 and the second tooth 402 engage, the second protrusion 405 on the side wall of the locking body 400 inserts into the gap between the mounting platform 201 and the elastic claw 203. The first protrusion 2031 of the elastic claw 203 engages with the second protrusion of the locking body 400, and simultaneously, the sealing cavity 205 of the mounting plate 200 adheres to the side wall of the locking body 400. Furthermore, the locking cavity 403, the threaded tightening body 300, and the elastic claw 203 also form a sealed chamber, creating a labyrinth seal. This effectively prevents fine particles such as dirt or dust from entering the threads between the threaded tightening body 300 and the connector 100, thus preventing the operator from easily detaching the threaded tightening body 300 from the connector 100. In addition, this design also prevents axial and radial movement between the mounting plate 200 and the locking body 400, achieving a secure fastening effect.

[0066] like Figure 1 and Figure 13 As shown, Figure 13 This is a schematic diagram of the connector 100 from another angle in one embodiment of the present invention. In one embodiment, a guide chamfer 1031 is formed between the side of the motor mounting platform 103 facing the motor 500 and the inner wall of the motor mounting platform 103. When the first shaft 501 is inserted into the connector 100, the guide chamfer 1031 can guide the first shaft 501, facilitating the quick assembly of the connector 100 onto the first shaft 501. In addition, the surface of the guide chamfer 1031 is relatively smooth, which will not cause wear on the first shaft 501, effectively increasing the service life of the motor 500.

[0067] like Figure 1 , Figure 10 , Figure 12 and Figure 14 As shown, Figure 14The diagram shows a schematic of the mounting plate 200 including the housing 502 in one embodiment of the present invention. In another embodiment, a lawnmower (not shown) is also provided, including a housing 502, a motor 500, and blades 700. The housing 502 is fitted over the outside of the motor 500, protecting it. The blades 700 are mounted on the mounting plate 200. When the lawnmower operates the motor 500 to rotate, the blades 700 on the mounting plate 200 rotate synchronously with the motor 500, thereby cutting weeds. The mounting plate 200 of the blades 700 is mounted to the motor shaft via a quick-installation device, which includes a connector 100, the mounting plate 200, a threaded tightening body 300, and a locking body 400. The connector 100 is mounted on the motor shaft and rotates with the motor shaft, and has a threaded body 102 on it; the mounting plate 200 is mounted on the connector 100 and rotates with the connector 100, and has a through hole 202 on it, through which the threaded body 102 protrudes; the threaded tightening body 300 is threadedly connected to the threaded body 102; the locking body 400 is located outside the threaded tightening body 300 and is rotatably mounted on the mounting plate 200; a pressing and tightening device is provided between the threaded tightening body 300 and the locking body 400.

[0068] like Figure 6 As shown, the mounting plate 200 is suitable for various applications. For example, it can be the rotating part of a fan (not shown in the figure) with fan blades mounted on it, or the rotating part of a mixer with mixing blades mounted on it. In one embodiment of the invention, when mounted on a lawnmower, the mounting plate 200 can be a blade disc with several blades 700 detachably mounted on it. The blades 700 are evenly distributed around the circumference of the blade disc. The blades 700 and the mounting plate 200 can be connected using bolts 701. The large end of the bolt 701 presses the blades 700 onto the mounting plate 200, and the small end of the bolt 701 passes through the blades 700 and is threaded onto the mounting plate 200. This detachable connection allows operators to easily replace different types of blades 700 as needed on site.

[0069] like Figure 1 and Figure 15 As shown, Figure 15 The diagram shown is a structural schematic of the housing 502 in one embodiment of the present invention. In one embodiment of the present invention, the housing 502 has a mounting cavity 503 on the side facing the mounting plate 200. A portion of the first shaft 501 passes through the mounting cavity 503 and extends into the connector 100. The mounting cavity 503 and the connector 100 together fit the first shaft 501 inside, so that the first shaft 501 will not be damaged by wear due to external force.

[0070] like Figure 1 and Figure 15As shown, in an embodiment of the present application, a fixing table 504 is arranged outside the mounting cavity 503, and a plurality of reinforcing ribs 505 are evenly arranged between the fixing table 504 and the mounting cavity 503. The fixing table 504 is circular and covers the outside of the mounting cavity 503. One end of the reinforcing rib 505 is arranged on the outer wall of the mounting cavity 503, and the other end is arranged on the inner wall of the fixing table 504 on the side facing the mounting cavity 503. By using the reinforcing rib 505, the firmness between the mounting cavity 503 and the fixing table 504 can be greatly enhanced.

[0071] In summary, the present application has the advantages of simple structure, fixing the mounting disc relative to the motor shaft by installing the threaded tightening body and the locking body on the mounting disc. After the motor is started, the mounting disc can rotate synchronously with the motor shaft under the driving of the motor shaft. When the mounting disc needs to be disassembled, the locking body is pressed and twisted to drive the threaded tightening body to rotate, thereby achieving the disassembly of the threaded tightening body. Without the aid of any tool, the mounting disc can be separated from the connector for replacement, achieving the purpose of quickly and conveniently replacing the mounting disc. Therefore, during on-site work, the mounting disc can be directly replaced without the aid of other tools, improving the user's experience and achieving the purpose of quickly and conveniently replacing the mounting disc. In addition, this installation method can quickly assemble the product, greatly improving the assembly efficiency of the production line and improving the production efficiency of the enterprise. When the lawn mower installed with the mounting disc using the above installation method is used, even if the outside of the locking body is filled with grass cuttings, soil, etc. after the lawn mower works for a certain period of time, the mounting disc can be replaced by rotating and pressing the locking body, and is not limited by the environment. Therefore, the present application effectively overcomes the shortcomings of the prior art and has high industrial utilization value.

[0072] The above embodiments only exemplarily illustrate the principles and effects of the present application, and are not used to limit the present application. Those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A quick installation device for an installation disk, characterized in that, include: A connector is mounted on a first shaft and rotates with the first shaft; it is provided with a threaded body. The mounting plate is mounted on the connector and rotates with the connector. It has a through hole, through which the threaded body protrudes. A threaded tightening body, with a threaded connection mounted on the threaded body; A locking body is disposed outside the threaded tightening body and is rotatably mounted on the mounting plate; A pressing and tightening device is provided between the threaded tightening body and the locking body; After the pressing and tightening device presses down and rotates at a certain angle, it rotates the locking body to drive the threaded tightening body to rotate, thereby tightening or loosening the threaded tightening body, so as to disassemble or install the mounting plate. The pressing and tightening device includes a plurality of first teeth disposed on the threaded tightening body and a plurality of second teeth disposed on the locking body, wherein the locking body can reciprocate axially so that the plurality of first teeth and the plurality of second teeth can be engaged or disengaged.

2. The quick installation device according to claim 1, characterized in that, The plurality of first teeth are disposed on the outer wall of the threaded tightening body, the locking body is provided with a locking cavity, and the plurality of second teeth are disposed on the inner wall of the locking cavity and can be inserted into the plurality of first teeth axially.

3. The quick installation device according to claim 1, characterized in that, The pressing and turning device also includes an elastic body, one end of which is mounted on the locking body and the other end of which is mounted on the connector.

4. The quick installation device according to claim 3, characterized in that, The elastic body is a spring.

5. The quick installation device according to claim 4, characterized in that, An elastic body mounting post is provided on the side of the locking body facing the threaded tightening body, and the elastic body mounting post is inserted into the inner hole of the spring.

6. The quick installation device according to claim 4, characterized in that, The connector has an elastomer mounting groove at one end facing the locking body, and the end of the spring is installed into the elastomer mounting groove.

7. The quick installation device according to claim 1, characterized in that, The first shaft is a motor shaft, the connector's base is mounted on the motor shaft, and the threaded part is located on the side of the base away from the motor.

8. The quick installation device according to claim 7, characterized in that, The connector is connected to the mounting plate via a circumferential stop plug-in device.

9. The quick installation device according to claim 8, characterized in that, The circumferential stop plug-in device includes a mounting groove on the mounting plate and a seat on the connector. The mounting groove matches the shape of the seat, and the seat is inserted into the mounting groove.

10. The quick installation device according to claim 1, characterized in that, The connector is interference-fitted onto the first shaft.

11. The quick installation device according to claim 1, characterized in that, The locking body is provided with multiple gripping parts.

12. The quick installation device according to claim 1, characterized in that, The mounting plate is provided with multiple elastic claws on the side facing the locking body, and the multiple elastic claws are evenly distributed on the outside of the through hole.

13. A lawnmower, comprising a housing, a motor, and blades, characterized in that, The mounting disc of the blade is mounted to the motor shaft of the motor via a quick-mounting device for the mounting disc, the quick-mounting device for the mounting disc comprising: A connector is mounted on the motor shaft and rotates with the motor shaft; it is provided with a threaded body. The mounting plate is mounted on the connector and rotates with the connector. It has a through hole, through which the threaded body protrudes. A threaded tightening body, with a threaded connection mounted on the threaded body; A locking body is disposed outside the threaded tightening body and is rotatably mounted on the mounting plate; A pressing and tightening device is provided between the threaded tightening body and the locking body; After the pressing and tightening device presses down and rotates at a certain angle, it rotates the locking body to drive the threaded tightening body to rotate, thereby tightening or loosening the threaded tightening body, so as to disassemble or install the mounting plate. The pressing and tightening device includes a plurality of first teeth disposed on the threaded tightening body and a plurality of second teeth disposed on the locking body, wherein the locking body can reciprocate axially so that the plurality of first teeth and the plurality of second teeth can be engaged or disengaged.

14. The lawnmower according to claim 13, characterized in that, The housing has a mounting cavity on the side facing the mounting plate.

15. The lawnmower according to claim 14, characterized in that, A fixing platform is provided on the outside of the mounting cavity, and multiple reinforcing ribs are evenly installed between the fixing platform and the mounting cavity.

16. The lawnmower according to claim 13, characterized in that, The mounting plate is a cutter head, on which several blades are detachably mounted, and the blades are evenly distributed along the circumference of the cutter head.

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