A grass comb cutter shaft quick change structure

Abstract

The application discloses a grass combing machine cutter shaft quick change structure and belongs to the technical field of garden tools. The grass combing machine cutter shaft quick change structure solves the problem of complicated installation and dismounting of the cutter shaft. The technical scheme for solving the problem mainly comprises a main body. The main body comprises a mounting seat and a bearing seat. The mounting seat is mounted on the machine body of the grass combing machine. The cutter shaft is mounted on the mounting seat through the bearing seat. The mounting seat is provided with an opening through which the bearing seat passes. The opening of the mounting seat is provided with a clamping mechanism. The clamping mechanism clamps the bearing seat so that the cutter shaft is mounted on the mounting seat. The grass combing machine cutter shaft quick change structure is mainly used for conveniently replacing the cutter shaft and making the cutter shaft installation more reliable.

Description

Technical Field

[0001] This invention relates to the field of garden tool technology, and in particular to a quick-change structure for the blade shaft of a grass comb. Background Technology

[0002] The blades on a lawn comber are replaced according to the different needs of the lawn, usually using replaceable blades (such as trimming heads). Current blade installation methods often use metal clips with screws, requiring tools to tighten the screws for fixation. This is very cumbersome to install and remove, making it inconvenient to replace the blade shaft assembly. While existing technologies, such as the invention patent CN109566060A, disclose a blade mounting structure for a lawn comber, including: a base shell with a blade cavity, mounting shaft holes and mounting platforms on both sides of the base shell; and a mounting assembly with a fixing seat, a clamping seat, and a locking piece, the fixing seat being fixed to the mounting platform, a blade shaft positioning opening between the fixing seat and the clamping seat, a locking groove at one end of the fixing seat and a first rotating seat at the other end, and a first rotating bushing at one end of the clamping seat and a second rotating seat at the other end, with a protruding locking block on the outer side of the second rotating bushing, this device relies on the deformation of the locking piece to clamp the blades. After prolonged use, the locking piece may deform and lose its clamping force, resulting in a failure to clamp. Of course, there are also invention patents such as CN105850345A that disclose a positioning mechanism for quick assembly and disassembly of blade assemblies. The blade assembly includes a rotating shaft, and the positioning mechanism includes a transmission wheel. One end of the rotating shaft is fixed to the transmission wheel and rotates synchronously with the transmission wheel; the other end of the rotating shaft is disposed on the blade holder. The positioning mechanism also includes a limiting block that cooperates with the blade holder. The limiting block is disposed on the outside of the rotating shaft in the installation direction of the other end of the rotating shaft to limit the rotating shaft to the positioning mechanism and prevent the rotating shaft from falling off from the installation direction. However, the structure of the above-mentioned device is relatively complex, and its installation and disassembly are very cumbersome. Summary of the Invention

[0003] The purpose of this invention is to provide a quick-change structure for the blade shaft of a combing machine, which solves the problem of cumbersome installation and disassembly of existing blade shafts, thereby facilitating blade shaft replacement and making blade shaft installation more reliable.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a quick-change structure for the blade shaft of a grass comber, comprising a main body, the main body comprising a mounting base and a bearing seat, the mounting base being mounted on the body of the grass comber, the blade shaft being mounted on the mounting base via the bearing seat, the mounting base having an opening for the bearing seat to pass through, and a clamping mechanism being provided at the opening of the mounting base, the clamping mechanism clamping the bearing seat to allow the blade shaft to be mounted on the mounting base.

[0005] After adopting the above technical solution, the present invention has the following advantages: the cutter shaft is installed on the bearing seat, the mounting seat is installed on the body of the combing machine, the cutter shaft is installed on the mounting seat through the bearing seat, and the bearing seat is clamped by the clamping mechanism so that the cutter shaft is installed on the mounting seat. The structure is relatively simple and the installation is more convenient. When disassembling, only the clamping mechanism needs to be opened to remove the bearing seat, and then the cutter shaft can be removed from the bearing seat. Disassembly is relatively simple and convenient, and no other parts or tools are required for disassembly and assembly. The cutter shaft can be replaced quickly and is more convenient to use.

[0006] Furthermore, the clamping mechanism includes first protrusions that are elastically positioned on both sides of the opening of the mounting base, and a connector for closing the opening. The connector is rotatably connected to one of the first protrusions and can rotate around the first protrusion and hook onto the first protrusion on the other side. The first protrusions on both sides undergo elastic deformation through the stretching of the connector to clamp the bearing seat. By adopting the aforementioned technical solution, the first protrusions on both sides undergo elastic deformation through the stretching of the connector to clamp the bearing seat, effectively avoiding the attenuation of clamping force, improving the clamping reliability of the bearing seat, and thus improving the reliability of the tool shaft installation.

[0007] Furthermore, the connecting member includes a connecting rod rotatably connected to a first protrusion on one side, a rotating shaft connected to the connecting rod, and a cam rotatable about the rotating shaft. The connecting rod rotates about the first protrusion so that the cam abuts against the outer side of the first protrusion on the other side. Using the aforementioned technical solution, the structure is simple. By rotating the connecting rod, the cam abuts against the outer side of the first protrusion on the other side, causing the first protrusion on the other side to deform inward, further clamping the bearing seat. No other tools are needed for disassembly and assembly, and the tool shaft can be replaced and installed quickly and is convenient to use.

[0008] Furthermore, the connecting member also includes a trigger portion, which is fixedly connected to the cam. The trigger portion drives the cam to rotate so that different positions of the cam abut against the outer side of the first protrusion on the other side. Using the aforementioned technical solution, since the radial distances of the cam are different at different positions, by driving the cam to rotate through the trigger portion so that different positions of the cam abut against the outer side of the first protrusion on the other side, the clamping force of the first protrusion clamping the bearing seat is adjusted, thereby further clamping the bearing seat.

[0009] Furthermore, the top surface of the bearing housing is provided with a limiting groove. When the cam abuts against the first protrusion, the connecting rod extends into the limiting groove and abuts against the inner wall of the limiting groove to restrict the lateral movement of the connecting rod. By adopting the above technical solution, the reliability of the tool shaft installation is further improved by extending the connecting rod into the limiting groove and abutting against the inner wall of the limiting groove to restrict the lateral movement of the connecting rod.

[0010] Furthermore, the main body also includes a positioning seat mounted on the cutter shaft via a bearing. The positioning seat and the bearing seat are spaced apart. The connecting member is provided with a locking element, and the positioning seat is provided with a locking hole. When the opening of the mounting seat is in the closed state, the locking element extends into the locking hole to restrict the lateral movement of the connecting member. This technical solution provides a double limiting effect on the connecting member, further improving the reliability of the cutter shaft installation. The spaced arrangement of the positioning seat and the bearing seat also positions the cutter shaft, improving the accuracy of the installation position and facilitating its installation.

[0011] Furthermore, the main body also includes an auxiliary seat detachably connected to the positioning seat. The auxiliary seat is equipped with a locking element, which locks the connector when the opening of the mounting seat is closed. By adopting the aforementioned technical solution, the locking element locks the connector when the opening of the mounting seat is closed, preventing the connector from automatically opening during use. This forms a multiple locking mechanism for the connector, making the tool shaft installation more reliable and thus improving the safety of tool shaft use.

[0012] Furthermore, the anti-reverse component is movably connected to the auxiliary seat, and a reset component is provided between the anti-reverse component and the auxiliary seat to tend to keep the anti-reverse component in the locking block position. By adopting the aforementioned technical solution and providing a reset component, the reliability of the anti-reverse component locking the connecting component when the opening of the mounting seat is in the closed state can be increased.

[0013] Furthermore, the upper surface of the anti-reverse component is provided with a corrugated surface that facilitates its movement. By adopting the aforementioned technical solution, the coefficient of friction of the upper surface of the anti-reverse component is increased, making it easier for the user to move the anti-reverse component directly and thus more convenient to use.

[0014] Furthermore, the positioning seat is provided with a snap-fit ​​part, and the auxiliary seat is provided with a snap-fit ​​mating part. The snap-fit ​​part and the snap-fit ​​mating part are snap-fitted and fixed, thereby allowing the auxiliary seat to be installed on the positioning seat. Using the above technical solution, the auxiliary seat can be detachably installed on the positioning seat through snap-fit ​​fixing. The structure is relatively simple, easy to disassemble, and can further increase the reliability of the connection between the mounting seat and the bearing seat, thereby increasing the reliability of the tool shaft installation. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings:

[0016] Figure 1 This is a partial structural diagram of a grass comber according to the present invention (with the blade shaft installed);

[0017] Figure 2 This is a partial structural diagram of the grass comber in this invention (with the blade shaft disassembled);

[0018] Figure 3 This is a partial exploded view of the hay comber in this invention;

[0019] Figure 4 This is a schematic diagram of the bearing housing mounted on the cutter shaft in this invention;

[0020] Figure 5 This is a schematic diagram of the mounting base in this invention;

[0021] Figure 6 This is a schematic diagram (I) of the quick-change structure of the combing machine cutter shaft in this invention;

[0022] Figure 7 This is a schematic diagram (II) of the quick-change structure of the combing machine blade shaft in this invention;

[0023] Figure 8 This is a schematic diagram of the quick-change structure of the comber blade shaft in this invention (when the locking element extends into the locking hole);

[0024] In the diagram, 1 is the mounting base; 11 is the opening; 2 is the bearing seat; 21 is the limiting groove; 3 is the machine head; 31 is the notch; 4 is the cutter shaft; 51 is the first protrusion; 52 is the connecting rod; 53 is the rotating shaft; 54 is the cam; 55 is the trigger part; 56 is the locking part; 6 is the positioning seat; 61 is the locking hole; 62 is the snap-fit ​​part; 7 is the auxiliary seat; 71 is the anti-reverse part; 72 is the corrugated surface; and 73 is the snap-fit ​​mating part. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0026] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in sequences other than those illustrated or described herein.

[0027] It should be understood that in the various embodiments of the present invention, the number of each process does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0028] It should be understood that in this invention, "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0029] It should be understood that in this invention, "multiple" refers to two or more. "And / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, X and / or Y can represent: X alone, X and Y simultaneously, or Y alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "Contains X, Y, and Z", "Contains X, Y, and Z" means that all three X, Y, and Z are contained; "Contains X, Y, or Z" means that one of X, Y, and Z is contained; "Contains X, Y, and / or Z" means that any one, two, or three of X, Y, and Z are contained.

[0030] The technical solution of the present invention will be described in detail below with specific embodiments. The following specific embodiments can be selected to be combined or substituted with each other according to the actual situation, and the same or similar concepts or processes may not be described again in some embodiments.

[0031] like Figures 1 to 8 As shown, the present invention provides a quick-change structure for the blade shaft of a grass comber, including a main body, the main body including a mounting base 1 and a bearing seat 2. The body of the grass comber is provided with a mounting notch 31, the mounting base 1 is installed in the mounting notch 31, the blade shaft 4 is installed on the mounting base 1 through the bearing seat 2, the mounting base 1 is provided with an opening 11 for the bearing seat 2 to pass through, and a clamping mechanism is provided at the opening 11 of the mounting base 1. The clamping mechanism clamps the bearing seat 2 so that the blade shaft 4 is installed on the mounting base 1.

[0032] The cutter shaft 4 is installed on the bearing seat 2, and the mounting base 1 is installed on the body of the combing machine. The cutter shaft 4 is installed on the mounting base 1 through the bearing seat 2. The bearing seat 2 is clamped by a clamping mechanism so that the cutter shaft 4 is installed on the mounting base 1. The structure is relatively simple and the installation is more convenient. When disassembling, you only need to open the clamping mechanism to remove the bearing seat 2 and then remove the cutter shaft 4 from the bearing seat 2. Disassembly is relatively simple and convenient, and no other parts or tools are required for disassembly and assembly. The cutter shaft 4 can be replaced quickly and is more convenient to use.

[0033] Specifically, the clamping mechanism includes first protrusions 51 that are elastically provided on both sides of the opening 11 of the mounting base 1, and a connector for covering the opening 11. The connector is rotatably connected to one of the first protrusions 51, and can rotate around the first protrusion 51 and hook onto the first protrusion 51 on the other side. The first protrusions 51 on both sides undergo elastic deformation through the stretching of the connector to clamp the bearing seat 2. By adopting the aforementioned technical solution, the first protrusions 51 on both sides undergo elastic deformation through the stretching of the connector to clamp the bearing seat 2, effectively avoiding the attenuation of clamping force, improving the clamping reliability of the bearing seat 2, and thus improving the installation reliability of the cutter shaft 4.

[0034] Furthermore, the connecting component includes a connecting rod 52 rotatably connected to the first protrusion 51 on one side, a rotating shaft 53 connected to the connecting rod 52, and a cam 54 rotatable around the rotating shaft 53. The connecting rod 52 rotates around the first protrusion 51 so that the cam 54 abuts against the outer side of the first protrusion 51 on the other side. The structure is simple. By rotating the connecting rod 52, the cam 54 abuts against the outer side of the first protrusion 51 on the other side, causing the first protrusion 51 on the other side to deform inward, further clamping the bearing seat 2. No other tools are required for disassembly and assembly. The replacement and installation of the cutter shaft 4 is fast and convenient to use.

[0035] It should be noted that the first protrusion 51 on one side is a wide side and the first protrusion 51 on the other side is a narrow side. Since the first protrusion 51 on the narrow side is easy to deform, the connector is rotatably connected to the first protrusion 51 on the wide side. The connecting rod 52 rotates around the first protrusion 51 so that the cam 54 abuts against the outer side of the first protrusion 51 on the narrow side. The two are interference fit, which is beneficial to the opening or closing of the connector.

[0036] To further improve the installation reliability of the bearing housing 2, the connecting component also includes a trigger part 55, which is fixedly connected to the cam 54. The trigger part 55 drives the cam 54 to rotate so that different positions of the cam 54 abut against the outer side of the first protrusion 51 on the other side. Since the radial directions of the cam 54 are different at different positions, by driving the cam 54 to rotate through the trigger part 55 so that different positions of the cam 54 abut against the outer side of the first protrusion 51 on the other side, the clamping force of the first protrusion 51 clamping the bearing housing 2 is adjusted, thereby further clamping the bearing housing 2.

[0037] Furthermore, the top surface of the bearing housing 2 is provided with a limiting groove 21. When the cam 54 abuts against the first protrusion 51, the connecting rod 52 extends into the limiting groove 21 and abuts against the inner wall of the limiting groove 21 to restrict the lateral movement of the connecting rod 52. By extending the connecting rod 52 into the limiting groove 21 and abutting against the inner wall of the limiting groove 21 to restrict the lateral movement of the connecting rod 52, the reliability of the tool shaft 4 installation is further improved.

[0038] To facilitate the installation of the cutter shaft 4, the main body also includes a positioning seat 6 mounted on the cutter shaft 4 via bearings. The positioning seat 6 is spaced apart from the bearing seat 2. The connecting member is provided with a locking member 56, and the positioning seat 6 is provided with a locking hole 61. When the opening 11 of the mounting seat 1 is in the closed state, the locking member 56 extends into the locking hole 61 to restrict the lateral movement of the connecting member. This provides a double limiting effect on the connecting member, further improving the reliability of the cutter shaft 4 installation. The spaced arrangement of the positioning seat 6 and the bearing seat 2 also positions the cutter shaft 4, improving the accuracy of the installation position and facilitating the installation of the cutter shaft 4.

[0039] To prevent the connector from loosening during use and causing changes in clamping force, the main body also includes an auxiliary seat 7 detachably connected to the positioning seat 6. The auxiliary seat 7 is equipped with a locking element 71. When the opening 11 of the mounting seat 1 is in the closed state, the locking element 71 locks the connector. By locking the connector with the locking element 71 when the opening 11 of the mounting seat 1 is in the closed state, the connector is prevented from opening automatically during use, forming a multiple locking of the connector. This makes the installation of the cutter shaft 4 more reliable, thereby improving the safety of the cutter shaft 4 in use.

[0040] It should be noted that the auxiliary seat 7 can be snapped together with the positioning seat 6. However, it is not limited to this.

[0041] Understandably, in this invention, the anti-reverse component 71 can be an anti-reverse block or an anti-reverse plate, etc. When the cutter shaft 4 is installed, the anti-reverse component 71 locks the trigger part 55, thereby preventing the connecting rod 52 and the cam 54 from becoming loose, and ensuring the safety of the cutter shaft 4 in use.

[0042] Furthermore, the positioning seat 6 is provided with a snap-fit ​​part 62, and the auxiliary seat 7 is provided with a snap-fit ​​mating part 73. The snap-fit ​​part 62 and the snap-fit ​​mating part 73 are snapped together and fixed, so that the auxiliary seat 7 is installed on the positioning seat 6. The snap-fit ​​fixation allows the auxiliary seat 7 to be detachably installed on the positioning seat 6. The structure is relatively simple and easy to disassemble. It can also further increase the reliability of the connection between the mounting seat 1 and the bearing seat 2, thereby increasing the reliability of the tool shaft 4 installation.

[0043] Furthermore, the anti-reverse member 71 is movably connected to the auxiliary seat 7, and a reset member is provided between the anti-reverse member 71 and the auxiliary seat 7 to tend to keep the anti-reverse member 71 in the locked pressure block position. By providing the reset member, the reliability of locking the connection when the opening 11 of the mounting seat 1 is in the closed state can be increased.

[0044] It should be noted that the reset component can be a suitable structure such as a spring.

[0045] To facilitate operation, the upper surface of the anti-reverse component 71 is provided with a corrugated surface 72 that facilitates movement of the anti-reverse component 71. This increases the coefficient of friction of the upper surface of the anti-reverse component 71, making it less likely for the user to slip when moving the anti-reverse component 71, and making it easier for the user to move the anti-reverse component 71 directly, thus making it more convenient to use.

[0046] In addition to the preferred embodiments described above, the present invention has other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection claimed by the present invention.

Claims

1. A quick-change structure for the blade shaft of a hay comber, characterized in that, The system includes a main body comprising a mounting base and a bearing housing. The mounting base is mounted on the body of the combing machine. The cutter shaft is mounted on the mounting base via the bearing housing. The mounting base has an opening for the bearing housing to pass through. A clamping mechanism is provided at the opening of the mounting base. The clamping mechanism clamps the bearing housing to mount the cutter shaft on the mounting base. The clamping mechanism includes first protrusions that are elastically arranged on both sides of the opening of the mounting base, and a connector for closing the opening. The connector is rotatably connected to one of the first protrusions and can rotate around the first protrusion and hook onto the first protrusion on the other side. The first protrusions on both sides undergo elastic deformation through the stretching of the connector to clamp the bearing housing. The connector includes a connecting rod rotatably connected to one of the first protrusions, a rotating shaft connected to the connecting rod, and a cam rotatable around the rotating shaft. The cam rotates and abuts against the outer side of the first protrusion on the other side. The connecting member also includes a trigger part, which is fixedly connected to the cam. The trigger part drives the cam to rotate so that different positions of the cam abut against the outer side of the first protrusion on the other side. The top surface of the bearing seat is provided with a limiting groove. When the cam abuts against the first protrusion, the connecting rod extends into the limiting groove and abuts against the inner wall of the limiting groove to limit the lateral movement of the connecting rod. The main body also includes a positioning seat mounted on the cutter shaft by a bearing. The positioning seat and the bearing seat are spaced apart. The connecting member is provided with a locking member. The positioning seat is provided with a locking hole. When the opening of the mounting seat is in the closed state, the locking member extends into the locking hole to limit the lateral movement of the connecting member. The main body also includes an auxiliary seat detachably connected to the positioning seat. The auxiliary seat is provided with a backstop. When the opening of the mounting seat is in the closed state, the backstop locks the connecting member.

2. The quick-change structure for the blade shaft of the combing machine according to claim 1, characterized in that, The anti-reverse component is movably connected to the auxiliary seat, and a reset component is provided between the anti-reverse component and the auxiliary seat to tend to keep the anti-reverse component in the locked pressure block position.

3. The quick-change structure for the blade shaft of the combing machine according to claim 2, characterized in that, The upper surface of the anti-reverse component is provided with a corrugated surface that facilitates the movement of the anti-reverse component.

4. The quick-change structure for the blade shaft of the combing machine according to claim 1, characterized in that, The positioning seat is provided with a snap-fit ​​part, and the auxiliary seat is provided with a snap-fit ​​mating part. The snap-fit ​​part and the snap-fit ​​mating part are snap-fitted and fixed so that the auxiliary seat is installed on the positioning seat.

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