Replaceable garden tool

Abstract

The replaceable garden tool comprises a tool body, a handle, a clamping mechanism and a fastening mechanism, and the tool body comprises an inserting part; the handle is provided with an insertion hole; the clamping mechanism and the fastening mechanism are arranged between the handle and the inserting part; the clamping mechanism comprises a clamping block movably arranged on the handle, the inserting part is provided with a clamping groove, and the clamping block can lock or unlock the tool body and the handle. The fastening mechanism comprises a rotating piece, the rotating piece is provided with an internal thread hole, and the inserting part is provided with an external thread part; when the clamping block is clamped into the clamping groove, the internal thread of the internal thread hole abuts against the external thread of the external thread part, or the internal thread hole and the external thread part are located at the corresponding positions; when the clamping block is clamped into the clamping groove, the internal thread of the internal thread hole and the external thread of the external thread part can be fastened by rotating the rotating piece so as to drive the handle and the tool body to abut against each other, detachable installation of the tool body and the handle is achieved, and the handle and the tool body are tightly matched, high in connection stability and not prone to loosening.

Description

Technical Field

[0001] The present invention relates to gardening tools, and particularly to a replaceable gardening tool. Background Art

[0002] At present, there are a wide variety of gardening tools applied to gardening work, such as shovels, saws, rakes, cutting knives, etc., to achieve different usage functions. This makes it necessary for people to prepare various types of gardening tools, and both storage and carrying are very inconvenient.

[0003] For this reason, the existing products have developed a detachable structure between the handle and the tool body, enabling a single handle to be adapted for use with multiple tool bodies, thereby facilitating the storage and carrying of gardening tools. Currently, for the existing detachable gardening tools, the tool body and the handle are generally connected by a snap mechanism, and the tool body can be detached by pressing a button to unlock the snap mechanism. However, in actual applications, gardening tools usually need to perform tasks with relatively large forces, such as shoveling soil, chopping, and raking soil, which makes the snap mechanism extremely prone to gaps and looseness, resulting in an insecure connection between the tool body and the handle and affecting the usage effect. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a replaceable gardening tool with high connection stability and not easily loosened.

[0005] The replaceable gardening tool according to the first aspect embodiment of the present invention includes a tool body, a handle, a clamping mechanism, and a fastening mechanism. The tool body includes a plug-in portion; the handle is provided with a plug-in hole into which the plug-in portion can be inserted; the clamping mechanism is disposed between the handle and the plug-in portion to connect the handle and the plug-in portion; the fastening mechanism is disposed between the handle and the plug-in portion to fasten the handle and the plug-in portion; the clamping mechanism includes a clamping block that can be movably disposed on the handle, and the plug-in portion is provided with a slot corresponding to the clamping block. The clamping block can move to a first position where it is clamped with the slot and a second position where it can move away from the slot to lock or unlock the tool body and the handle; the fastening mechanism includes a rotating member rotatably disposed on the handle. The rotating member is provided with an internal threaded hole into which the plug-in portion can be placed, and an external threaded portion corresponding to the internal threaded hole is provided at the end of the plug-in portion; when the clamping block is snapped into the slot, the internal thread of the internal threaded hole abuts against the external thread of the external threaded portion, or the internal threaded hole and the external threaded portion are in corresponding positions, and by rotating the rotating member, the internal threaded hole and the external threaded portion can be threadedly engaged; when the clamping block is snapped into the slot, rotating the rotating member can fasten the internal thread of the internal threaded hole and the external thread of the external threaded portion to drive the handle and the tool body to move relatively closer.

[0006] The replaceable gardening tool according to the embodiment of the present invention has at least the following beneficial effects: it can achieve the detachable installation of the tool body and the handle, and the handle fits tightly with the tool body, with high connection stability and not easy to loosen.

[0007] According to some embodiments of the present invention, a middle groove extending along the length direction to the end of the insertion part is arranged on the insertion part, the clamping groove is arranged at the middle groove, the clamping block includes a connecting part corresponding to the middle groove and a clamping part corresponding to the clamping groove. When the clamping block is in the first position, the clamping part is clamped into the clamping groove. When the clamping block is in the second position, the clamping part disengages from the clamping groove, and the connecting part is located in the middle groove.

[0008] According to some embodiments of the present invention, the clamping block further includes a first guiding part and a second guiding part. The first guiding part, the connecting part, the clamping part, and the second guiding part are distributed in sequence along the up-down direction. The handle is provided with an installation groove for the clamping block to be inserted into from top to bottom. The installation groove communicates with the insertion hole. An upper guiding surface group cooperating with the first guiding part is arranged at the upper part of the installation groove, and a lower guiding surface group cooperating with the second guiding part is arranged at the lower part of the installation groove.

[0009] According to some embodiments of the present invention, the first guiding part and the second guiding part are provided with convex ribs extending along the up-down direction, and the convex ribs are correspondingly abutted against the upper guiding surface group or the lower guiding surface group.

[0010] According to some embodiments of the present invention, the middle groove divides the end part of the insertion part into two fork arms that are spaced apart and extend along the length direction of the insertion part. The two groups of fork arms can be elastically deformed by extrusion. The external thread part is arranged on the fork arms. The inner diameter of the inner thread hole gradually decreases from the insertion direction of the insertion part, so that the cross section of the inner wall of the inner thread hole forms a first inclination angle a with the insertion direction of the insertion part. When the rotating part tightens the internal thread of the inner thread hole and the external thread of the external thread part, the inner thread hole squeezes the two fork arms to move relatively closer and clamp the clamping part.

[0011] According to some embodiments of the present invention, the angle of the first inclination angle a is 0.5° to 2°.

[0012] According to some embodiments of the present invention, the middle groove divides the end portion of the insertion portion into two fork arms that are spaced apart and extend along the length direction of the insertion portion. The two groups of fork arms can be elastically deformed by extrusion. The external thread portion is provided on the fork arms. An external pushing portion corresponding to the middle groove is provided in the insertion hole. When the insertion portion is inserted into the insertion hole, the external pushing portion is located in the middle groove and can push and press the two fork arms to deform relatively away from each other, so that the external thread portion is in threaded engagement with the internal thread hole.

[0013] According to some embodiments of the present invention, the side surface of the external pushing portion is an inclined pushing surface that can push the fork arms to move outwards. The inclined pushing surface forms a second inclination angle b with the insertion direction of the insertion portion.

[0014] According to some embodiments of the present invention, the angle of the second inclination angle b is 1° to 3°.

[0015] According to some embodiments of the present invention, the inner diameter of the internal thread hole gradually decreases along the insertion direction of the insertion portion, so that the cross-section of the hole wall of the internal thread hole forms a first inclination angle a with the insertion direction of the insertion portion. When the internal thread of the internal thread hole fastens the external thread of the external thread portion, the internal thread hole squeezes the two fork arms to move relatively closer and clamps the clamping portion and / or the external pushing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0017] Figure 1 is one of the structural schematic diagrams of the replaceable gardening tool according to the embodiment of the present invention;

[0018] Figure 2 is the exploded schematic diagram of the replaceable gardening tool according to the embodiment of the present invention;

[0019] Figure 3 is one of the cross-sectional schematic diagrams of the handle when the clamping block is in the first position according to the embodiment of the present invention (the cutting plane is a vertical plane);

[0020] Figure 4 is the second cross-sectional schematic diagram of the handle when the clamping block is in the first position according to the embodiment of the present invention (the cutting plane is a horizontal plane);

[0021] Figure 5 is the exploded schematic diagram of the inner core and the clamping block according to the embodiment of the present invention;

[0022] Figure 6 is the cross-sectional schematic diagram when the inner core and the clamping block are exploded according to the embodiment of the present invention;

[0023] Figure 7 One of the cross-sectional views of the inner core in the embodiment of the present invention (the cutting plane is a horizontal plane);

[0024] Figure 8 Cross-sectional view of the rotating part in the embodiment of the present invention (the cutting plane is a horizontal plane);

[0025] Figure 9 Structural diagram of the plug-in part in the embodiment of the present invention;

[0026] Figure 10 The third cross-sectional view of the handle when the clamping block is in the first position in the embodiment of the present invention (the cutting plane is a horizontal plane, and a convex part 121 is arranged on the inner side of the fork arm);

[0027] Figure 11 The second cross-sectional view of the inner core in the embodiment of the present invention (the cutting plane is a horizontal plane, and the outer pushing part is provided with an elastic extension part);

[0028] Figure 12 The second structural diagram of the replaceable gardening tool in the embodiment of the present invention (the tool body is a rake).

[0029] Reference numerals:

[0030] Tool body 100, plug-in part 110, middle groove 111, external thread part 120, convex part 121, fork arm 130;

[0031] Handle 200, plug-in hole 201, installation groove 202, upper guide surface group 203, lower guide surface group 204, outer pushing part 210, oblique pushing surface 211, elastic extension part 212, housing 220, key hole 221, inner core 230;

[0032] Clamping block 310, clamping groove 301, connecting part 311, clamping part 312, first guiding part 313, second guiding part 314, convex rib 315, pressing part 316, cross groove 317, return spring 320, key 330;

[0033] Internal thread hole 401, rotating part 410. Detailed implementation manners

[0034] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0035] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0036] In the description of the present invention, if the first and second are described only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features or implicitly specifying the sequence relationship of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0038] The following refers to Figures 1 to 12 Describe a replaceable gardening tool according to an embodiment of the present invention.

[0039] As Figures 1 to 4 、 Figure 9 shown, a replaceable gardening tool according to an embodiment of the present invention includes a tool body 100, a handle 200, a clamping mechanism and a fastening mechanism. The tool body 100 includes a plugging portion 110; the handle 200 is provided with a plugging hole 201 into which the plugging portion 110 can be inserted; the clamping mechanism is arranged between the handle 200 and the plugging portion 110 to connect the handle 200 and the plugging portion 110; the fastening mechanism is arranged between the handle 200 and the plugging portion 110 to fasten the handle 200 and the plugging portion 110.

[0040] The clamping mechanism includes a clamping block 310 that can be movably arranged on the handle 200. The plugging portion 110 is provided with a clamping groove 301 corresponding to the clamping block 310. The clamping block 310 can move to a first position where it is clamped and matched with the clamping groove 301 and a second position where it can move to be separated from the clamping groove 301 to lock or unlock the tool body 100 and the handle 200;

[0041] The fastening mechanism includes a rotating member 410 that is rotatably arranged on the handle 200. The rotating member 410 is provided with an internal threaded hole 401 into which the plugging portion 110 can be placed. The end of the plugging portion 110 is provided with an external threaded portion 120 corresponding to the internal threaded hole 401;

[0042] When the card - mounting block 310 is inserted into the card slot 301, the internal thread of the internal - thread hole 401 abuts against the external thread of the external - thread portion 120, or the internal - thread hole 401 and the external - thread portion 120 are in corresponding positions. By rotating the rotating member 410, the internal thread of the internal - thread hole 401 can be thread - fitted with the external thread of the external - thread portion 120;

[0043] When the card - mounting block 310 is inserted into the card slot 301, rotating the rotating member 410 can fasten the internal thread of the internal - thread hole 401 and the external thread of the external - thread portion 120, so as to drive the handle 200 to move relatively closer to the tool body 100, making the handle 200 and the tool body 100 fit tightly, with high connection stability and not easy to loosen.

[0044] Specifically, for occasions with low application strength requirements or when temporarily using gardening tools, the card - mounting mechanism can be used to connect the tool body 100 and the handle 200 to achieve quick connection and quick use. When the application strength requirements are high or there is a fitting clearance in the card - mounting mechanism, after the tool body 100 and the handle 200 are connected by the card - mounting mechanism, by rotating the rotating member 410, the tool body 100 can be tightened until it tightly abuts against the handle 200 to form a tight fit, thereby improving the use effect of the gardening tool and having better controllability.

[0045] Moreover, in actual application, the tool body 100 includes a shovel, a saw, a rake, a cutting knife, etc., and all are provided with similar insertion portions 110. When it is necessary to replace different tool bodies 100, if the rotating member 410 is not fastened, drive the card - mounting block 310 to the second position, and then the tool body 100 can be pulled out; if the rotating member 410 is fastened, loosen the rotating member 410, drive the card - mounting block 310 to the second position, and then the tool body 100 can be pulled out. The tool replacement is very convenient.

[0046] Such as Figure 1 shown, in some embodiments of the present invention, the tool body 100 is a shovel. Of course, in the specific implementation process, the tool body 100 can also be a rake (as Figure 12 shown) or a saw, a cutting knife, etc., which will not be elaborated here.

[0047] In some embodiments of the present invention, it is set that the insertion portion 110 is inserted into the insertion hole 201 from front to back.

[0048] Such as Figures 2 to 6As shown, in some embodiments of the present invention, the insertion portion 110 is provided with a middle groove 111 extending along its length to its end, the clamping groove 301 is provided at the middle groove 111, the clamping block 310 includes a connecting portion 311 corresponding to the middle groove 111 and a clamping portion 312 corresponding to the clamping groove 301. When the clamping block 310 is in the first position, the clamping portion 312 is snapped into the clamping groove 301. When the clamping block 310 is in the second position, the clamping portion 312 disengages from the clamping groove 301, and the connecting portion 311 is located within the middle groove 111. Through the cooperation of the middle groove 111 and the connecting portion 311, the positional accuracy between the clamping groove 301 and the clamping portion 312 can be improved, and the reliability of the clamping fit can be enhanced.

[0049] Specifically, the clamping block 310 is configured with a return spring 320. The return spring 320 provides an elastic force for the clamping block 310 to push the clamping portion 312 into the clamping groove 301. During the process of inserting the insertion portion 110 into the insertion hole 201, the connecting portion 311 and the middle groove 111 are in sliding fit for guiding. At the same time, the clamping portion 312 abuts against the outer side surface of the insertion portion 110 under the elastic force of the return spring 320. When the insertion portion 110 is inserted to the set position, the clamping portion 312 is aligned with the clamping groove 301, and under the elastic force of the return spring 320, the clamping portion 312 automatically snaps into the clamping groove 301, thus completing the clamping fit.

[0050] As Figure 5 、 Figure 6 As shown, in some embodiments of the present invention, the clamping block 310 further includes a first guiding portion 313 and a second guiding portion 314. The first guiding portion 313, the connecting portion 311, the clamping portion 312, and the second guiding portion 314 are sequentially distributed in the up-down direction. The handle 200 is provided with an installation groove 202 that can accommodate the clamping block 310 to be loaded from top to bottom. The installation groove 202 communicates with the insertion hole 201. The upper part of the installation groove 202 is provided with an upper guiding surface group 203 that cooperates with the first guiding portion 313, and the lower part of the installation groove 202 is provided with a lower guiding surface group 204 that cooperates with the second guiding portion 314, so that the upper and lower parts of the installation groove 202 respectively form a guiding structure with the first guiding portion 313 and the second guiding portion 314, improving the accuracy when the clamping block 310 moves up and down.

[0051] Specifically, the handle 200 includes a housing 220 and an inner core 230. The inner core 230 is disposed in the housing 220. The insertion hole 201 and the installation groove 202 are provided on the inner core 230. The return spring 320 is disposed between the lower end surface of the second guiding portion 314 and the inner wall of the housing 220 to form an upward elastic pressing force on the clamping block 310, so that the clamping portion 312 abuts against the outer side surface of the insertion portion 110 under the elastic force of the return spring 320. By using the cooperation of the first guiding portion 313 and the upper guiding surface group 203 and the cooperation of the second guiding portion 314 and the second guiding portion 314, when the insertion portion 110 is inserted into the set position, the clamping portion 312 can be accurately aligned with the card slot 301. Under the elastic force of the return spring 320, the clamping portion 312 automatically snaps into the card slot 301, and due to the up and down positioning effects of the first guiding portion 313 and the second guiding portion 314, the clamping structure is stable and reliable.

[0052] As Figure 5 , Figure 6 shown, in some embodiments of the present invention, the first guiding portion 313 and the second guiding portion 314 are provided with ribs 315 extending in the up and down direction. The ribs 315 correspondingly abut against the upper guiding surface group 203 or the lower guiding surface group 204 to reduce the contact area between the first guiding portion 313 and the upper guiding surface group 203 and between the second guiding portion 314 and the lower guiding surface group 204, reduce the moving resistance, and enable the clamping block 310 to slide smoothly in the installation groove 202.

[0053] As Figure 5 , Figure 6 shown, in some embodiments of the present invention, the insertion direction of the insertion portion 110 is set as the length direction, and the horizontal lateral direction of the insertion direction of the insertion portion 110 is set as the width direction. The length of the clamping portion 312 is the same as that of the second guiding portion 314, and the width of the clamping portion 312 is smaller than the width of the second guiding portion 314 to limit the second guiding portion 314 from sliding into the card slot 301 to ensure the reliability of the cooperation between the second guiding portion 314 and the lower guiding surface group 204.

[0054] As Figure 2 , Figure 3 shown, in some embodiments of the present invention, the clamping mechanism further includes a button 330 for driving the clamping block 310 to move.

[0055] Specifically, the button 330 is disposed above the first guiding portion 313 for facilitating the pressing of the clamping block 310. The housing 220 is provided with a button hole 221 for installing the button 330. A hook 331 is provided at the lower part of the button 330 and hooked to the inner wall of the housing 220 through the button hole 221 to limit the button 330 from detaching from the housing 220, and at the same time limit the upward movement stroke of the clamping block 310 to avoid accidental detachment of the clamping block 310 when the insertion portion 110 is not inserted into the handle 200.

[0056] As Figure 5 shown, in some embodiments of the present invention, a pressing portion 316 connected to the key 330 is disposed above the first guiding portion 313 to facilitate the connection with the key 330.

[0057] Specifically, a cross groove 317 is disposed on the upper portion of the pressing portion 316, and the key 330 is provided with a cross rib (not shown in the figure) corresponding to the cross groove 317 to improve the connection stability between the key 330 and the pressing portion 316.

[0058] As Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 shown, in some embodiments of the present invention, the middle groove 111 divides the end portion of the insertion portion 110 into two fork arms 130 that are spaced apart and extend along the length direction of the insertion portion 110. The two groups of fork arms 130 can be elastically deformed by extrusion. The external thread portion 120 is provided on the fork arms 130. The inner diameter of the internal thread hole 401 gradually decreases from the insertion direction of the insertion portion 110, so that the cross section of the hole wall of the internal thread hole 401 forms a first inclination angle a with the insertion direction of the insertion portion 110. When the rotating member 410 fastens the internal thread of the internal thread hole 401 and the external thread of the external thread portion 120, the internal thread hole 401 squeezes the two fork arms 130 to move relatively closer and clamp the clamping portion 312, so as to improve the compactness of the cooperation between the card slot 301 of the insertion portion 110 and the clamping portion 312 of the clamping block 310, thereby improving the connection stability between the tool body 100 and the handle 200.

[0059] Specifically, as Figure 8 shown, the internal thread hole 401 is a tapered hole, and its inner diameter gradually decreases from the insertion direction of the insertion portion 110. When the internal thread hole 401 is in threaded cooperation with the external thread portion 120, the more the rotating member 410 is tightened, the greater the depth of the insertion portion 110 inserted into the internal thread hole 401. Therefore, the extrusion deformation amount of the two fork arms 130 is more. Since the card slot 301 corresponding to the clamping portion 312 is located between the two fork arms 130, that is, the width of the card slot 301 is narrowed, so that the two fork arms 130 can tightly hold the clamping portion 312 and improve the connection stability.

[0060] In some embodiments of the present invention, the angle of the first inclination angle a is 1° to 3°, which can meet the requirement of the fork arms 130 tightly holding the clamping portion 312, and at the same time, the rotating member 410 can be sufficient to tighten the tool body 100 to be in close contact with the handle 200.

[0061] In some embodiments of the present invention, when the insertion portion 110 is inserted into the set clamping position, the overlapping threads of the external thread portion at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 are one to two groups, so as to reduce the influence on the insertion of the insertion portion 110, enable the insertion portion 110 to be smoothly inserted into the set clamping position, and when the rotating member 410 is rotated, the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 can be normally thread - mated to realize the extrusion of the two fork arms 130.

[0062] Specifically, as Figure 4 shown, the thread at the rearmost end of the external thread portion 120 is engaged with the thread groove at the foremost end of the internal thread hole 401 to form a set of overlapping threads. Rotating the rotating member 410 can make the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 be normally thread - mated.

[0063] As Figures 3 to 9 shown, in some embodiments of the present invention, the middle groove 111 divides the end portion of the insertion portion 110 into two fork arms 130 that are spaced apart and extend along the length direction of the insertion portion 110. The two groups of fork arms 130 can be elastically deformed by extrusion. The external thread portion 120 is provided on the fork arm 130. An external pushing portion 210 corresponding to the middle groove 111 is provided in the insertion hole 201. When the insertion portion 110 is inserted into the insertion hole 201, the external pushing portion 210 is located in the middle groove 111 and can push the two fork arms 130 to move away from each other and deform, so that the external thread portion 120 and the internal thread hole 401 are thread - mated, thereby improving the reliability of the cooperation between the external thread portion 120 and the internal thread hole 401, and enabling the rotating member 410 to be normally tightened when rotating the tool body 100.

[0064] In some embodiments of the present invention, the external thread at the rear end of the external thread portion 120 is set to have a set fit clearance with the internal thread at the front end of the internal thread hole 401, so as to facilitate the normal insertion of the insertion portion 110 into the set clamping position. At the same time, when the insertion portion 110 is inserted into the set clamping position, the external pushing portion 210 pushes the two fork arms 130 outwards, reducing the fit clearance between the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401, enabling the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 to be normally mated when rotating the rotating member 410, thereby improving the reliability of the mechanism.

[0065] In some embodiments of the present invention, when the fork arms 130 are not pushed, the outer diameter of the external thread portion 120 is less than or equal to the inner diameter of the internal thread hole 401, so that the fork arms 130 can be inserted into the corresponding position of the internal thread at the front end of the internal thread hole 401 without obstruction. Then, the two fork arms 130 are pushed outward by the outer pushing portion 210 to increase the outer diameter of the external thread portion 120. At this time, the outer diameter of the external thread portion 120 is greater than the inner diameter of the internal thread hole 401, so that the external thread at the rear end of the external thread portion 120 can be properly engaged with the internal thread at the front end of the internal thread hole 401.

[0066] As Figure 7 shown, in some embodiments of the present invention, the side surface of the outer pushing portion 210 is an inclined pushing surface 211 capable of pushing the fork arms 130 to move outward. The inclined pushing surface 211 forms a second inclination angle b with the insertion direction of the insertion portion 110, so that the cross-section of the outer pushing portion 210 is in a trapezoidal structure to meet the pushing requirements for the fork arms 130.

[0067] In some embodiments of the present invention, the angle of the second inclination angle b is 1° to 3°, which can reduce the fitting clearance between the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401, and can avoid excessive spreading of the fork arms 130 resulting in breakage of the fork arms 130 or excessive spreading of the card slot 301.

[0068] As Figure 10 shown, in some embodiments of the present invention, a protrusion portion 121 is convexly provided on the inner side of the fork arms 130. When the insertion portion 110 is inserted into the set clamping position, the protrusion portion 121 abuts against the inclined pushing surface 211, reducing the fitting clearance between the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401. When the rotating member 410 is rotated, the external thread at the rear end of the external thread portion 120 can be properly engaged with the internal thread at the front end of the internal thread hole 401, thereby improving the reliability of the mechanism.

[0069] As Figure 3 、 Figure 4 、 Figure 7 、 Figure 8 、 Figure 9As shown, in some embodiments of the present invention, the inner diameter of the internal thread hole 401 gradually decreases in the insertion direction of the insertion portion 110, such that the cross-section of the hole wall of the internal thread hole 401 forms a first inclination angle a with the insertion direction of the insertion portion 110. When the rotating member 410 fastens the internal thread of the internal thread hole 401 and the external thread of the external thread portion 120, the internal thread hole 401 squeezes the two fork arms 130 to move relatively closer, and clamps the locking portion 312 and / or the pushing portion 210, that is, the pushing portion 210 pushes and presses the two fork arms 130 to expand until the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 are properly engaged. Rotate the rotating member 410 to fasten the internal thread of the internal thread hole 401 and the external thread of the external thread portion 120, so that the internal thread hole 401 squeezes the two fork arms 130 to move relatively closer, and clamps the locking portion 312 and / or the pushing portion 210, thereby improving the compactness of the cooperation between the card slot 301 of the insertion portion 110 and the locking portion 312 of the card mounting block 310, and thus improving the stability of the connection between the tool body 100 and the handle 200.

[0070] As Figure 11 shown, in some embodiments of the present invention, elastic extension portions 212 are respectively provided on both sides of the pushing portion 210, and the oblique pushing surface 211 is provided on the outer side of the elastic extension portion 212 to elastically push and press the fork arms 130 to move outwards, reducing the fitting gap between the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401, such that when the rotating member 410 is rotated, the external thread at the rear end of the external thread portion 120 and the internal thread at the front end of the internal thread hole 401 can be properly engaged, thereby improving the reliability of the mechanism. At the same time, rotate the rotating member 410 to fasten the internal thread of the internal thread hole 401 and the external thread of the external thread portion 120, the internal thread hole 401 can squeeze the two fork arms 130 to move relatively closer, the fork arms 130 squeeze the elastic extension portion 212 to deform, and hold the locking portion 312 tightly, thereby improving the compactness of the cooperation between the card slot 301 of the insertion portion 110 and the locking portion 312 of the card mounting block 310, and thus improving the stability of the connection between the tool body 100 and the handle 200.

[0071] Specifically, as Figure 11 shown, the elastic extension portions 212 on both sides of the pushing portion 210 are in the shape of thin plates, and are in the shape of a shear head (trapezoidal structure) facing the insertion direction of the insertion portion 110, using the elastic force generated by the thin plates.

[0072] It can be understood that, in some embodiments of the present invention, the pushing portion 210 and the elastic extension portion 212 can be provided as an integral structure with the inner core 230.

[0073] Of course, in the specific implementation process, the pushing portion 210 and the elastic extension portion 212 can be provided as an integral structure and installed on the inner core 230 by an assembly method.

[0074] Certainly, the present invention is not limited to the above-described embodiments. Those skilled in the art can make equivalent deformations or substitutions without departing from the spirit of the present invention, and these equivalent deformations or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A replaceable gardening tool, characterized in that: include: A tool body (100), the tool body (100) comprising a plug-in portion (110); a handle (200), the handle (200) being provided with a plug-in hole (201) capable of being inserted into the plug-in portion (110); a clamping mechanism, the clamping mechanism being arranged between the handle (200) and the plug-in portion (110) so as to connect the handle (200) and the plug-in portion (110); a fastening mechanism, the fastening mechanism being arranged between the handle (200) and the plug-in portion (110) so as to fasten the handle (200) and the plug-in portion (110); wherein the clamping mechanism comprises a clamping block (310) movably arranged on the handle (200), the plug-in portion (110) being provided with a clamping slot (301) corresponding to the clamping block (310), and the clamping block (310) being movable to a first position for clamping and matching with the clamping slot (301) and being movable to a second position for separating from the clamping slot (301); The fastening mechanism comprises a rotating member (410) rotatably arranged on the handle (200), the rotating member (410) being provided with an internal threaded hole (401) capable of receiving the plug-in portion (110), and an end portion of the plug-in portion (110) being provided with an external threaded portion (120) corresponding to the internal threaded hole (401); When the clamping block (310) is clamped into the clamping slot (301), the internal thread of the internal threaded hole (401) contacts the external thread of the external threaded portion (120), or the internal thread of the internal threaded hole (401) and the external thread of the external threaded portion (120) are in corresponding positions. Rotating the rotating member (410) can make the internal threaded hole (401) and the external threaded portion (120) threadably cooperate, so as to drive the handle (200) and the tool body (100) to move relatively close to each other.

2. The replaceable gardening tool according to claim 1, characterized in that: The plug-in portion (110) is provided with a middle groove (111) extending along its length direction to its end portion, the card slot (301) is provided at the middle groove (111), the card block (310) comprises a connecting portion (311) corresponding to the middle groove (111) and a latching portion (312) corresponding to the card slot (301), when the card block (310) is located at the first position, the latching portion (312) is latched into the card slot (301), when the card block (310) is located at the second position, the latching portion (312) is disengaged from the card slot (301), and the connecting portion (311) is located in the middle groove (111).

3. The replaceable gardening tool according to claim 2, characterized in that: The clamping block (310) further comprises a first guide portion (313) and a second guide portion (314); the first guide portion (313), the connecting portion (311), the latch portion (312), and the second guide portion (314) are sequentially distributed in the up-down direction; the handle (200) is provided with a mounting groove (202) into which the clamping block (310) can be installed from top to bottom; the mounting groove (202) is connected with the plug hole (201); an upper guide surface group (203) cooperating with the first guide portion (313) is provided at the upper portion of the mounting groove (202); and a lower guide surface group (204) cooperating with the second guide portion (314) is provided at the lower portion of the mounting groove (202).

4. The replaceable gardening tool according to claim 3, characterized in that: The first guide portion (313) and the second guide portion (314) are provided with ridges (315) extending in the up-down direction, and the ridges (315) are correspondingly in contact with the upper guide surface group (203) or the lower guide surface group (204).

5. The replaceable gardening tool according to claim 2, characterized in that: The middle groove (111) separates the end of the plug-in portion (110) into two fork arms (130) that are spaced apart and extend along the length direction of the plug-in portion (110); the two groups of fork arms (130) can be elastically deformed by being squeezed; the external threaded portion (120) is arranged on the fork arms (130); the inner diameter of the internal threaded hole (401) gradually decreases from the insertion direction of the plug-in portion (110), so that the cross-section of the hole wall of the internal threaded hole (401) forms a first inclination angle a with the insertion direction of the plug-in portion (110); when the rotating member (410) tightens the internal thread of the internal threaded hole (401) and the external thread of the external threaded portion (120), the internal threaded hole (401) squeezes the two fork arms (130) to move relatively close to each other and clamps the latching portion (312).

6. The replaceable gardening tool according to claim 5, characterized in that: The first inclination angle a is in a range of 0.5° to 2°.

7. The replaceable gardening tool according to claim 2, characterized in that: The middle groove (111) divides the end of the plug-in portion (110) into two fork arms (130) that are spaced apart and extend along the length direction of the plug-in portion (110); the two groups of fork arms (130) can be elastically deformed by being squeezed; the external threaded portion (120) is provided on the fork arms (130); an external push portion (210) corresponding to the middle groove (111) is provided in the plug-in hole (201); when the plug-in portion (110) is inserted into the plug-in hole (201), the external push portion (210) is located in the middle groove (111) and can push the two fork arms (130) to be relatively far apart and deformed, so that the external threaded portion (120) is threadably matched with the internal threaded hole (401).

8. The replaceable gardening tool according to claim 7, characterized in that: The side surface of the outward pushing portion (210) is an oblique pushing surface (211) capable of pushing the fork arm (130) to move outward, and the oblique pushing surface (211) forms a second inclination angle b with the insertion direction of the plug-in portion (110).

9. The interchangeable gardening tool according to claim 8, characterized in that: The second inclination angle b is in a range of 1° to 3°.

10. The replaceable gardening tool according to claim 7, characterized in that: The inner diameter of the internal threaded hole (401) gradually decreases from the insertion direction of the plug-in portion (110), so that the cross-section of the hole wall of the internal threaded hole (401) forms a first inclination angle a with the insertion direction of the plug-in portion (110). When the rotating member (410) tightens the internal thread of the internal threaded hole (401) and the external thread of the external threaded portion (120), the internal threaded hole (401) squeezes the two fork arms (130) to move relatively close to each other and clamps the latch portion (312) and / or the push-out portion (210).

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