Shearing mechanism and garden shears

Abstract

The present invention discloses a shearing mechanism and garden shears, wherein the shearing mechanism includes a mounting frame, a first shearing assembly, a second shearing assembly, and a linkage mechanism; the first shearing assembly includes a first driving arm rotatably arranged on the mounting frame and a first shearing part rotatably arranged on the mounting frame, the first driving arm is provided with a first driving tooth, and the first shearing part is provided with a first driven tooth; the second shearing assembly includes a second driving arm rotatably arranged on the mounting frame and a second shearing part rotatably arranged on the mounting frame, the second driving arm is provided with a second driving tooth, and the second shearing part is provided with a second driven tooth; by adopting a transmission structure with tooth matching, different gear ratios can be configured according to needs, thereby achieving the needs of saving labor or controlling the size of the shearing opening, the transmission structure is simple and easy to manufacture, and the first shearing assembly and the second shearing assembly are relatively linked through the linkage mechanism, which facilitates the shearing control of the shearing mechanism.

Description

Technical Field

[0001] The present invention relates to the field of gardening tools, and in particular to a shearing mechanism and gardening shears. Background Art

[0002] Traditional gardening shears generally have a shearing part directly connected to the handle, and the opening and closing of the shearing mechanism can be controlled by opening and closing the handle. This structure is relatively simple and has a low manufacturing cost, but it does not have the effect of saving effort. For this reason, some gardening shears currently use a connecting rod mechanism or a connecting rod slider mechanism to achieve the effect of saving effort. For example, the Chinese patent number "CN201920234270.7", entitled "Gardening Shears Linked Labor-Saving Structure" invention patent, uses a structure with multiple connecting rods and sliding pairs to achieve the effect of labor-saving shearing. However, its structure is relatively complex and the connection relationship is also relatively cumbersome, which is not conducive to production and assembly. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a shearing mechanism with the advantage of simple structure.

[0004] The present invention also provides a pair of garden shears.

[0005] The shearing mechanism according to the first aspect of the present invention includes a mounting frame, a first shearing assembly, a second shearing assembly, and a linkage mechanism; the first shearing assembly includes a first driving arm rotatably arranged on the mounting frame and a first shearing part rotatably arranged on the mounting frame, the first driving arm is provided with a first driving tooth, and the first shearing part is provided with a first driven tooth engaged with the first driving tooth; the second shearing assembly includes a second driving arm rotatably arranged on the mounting frame and a second shearing part rotatably arranged on the mounting frame, the second driving arm is provided with a second driving tooth, and the second shearing part is provided with a second driven tooth engaged with the second driving tooth; wherein the linkage mechanism is arranged between the first driving arm and the second driving arm, so that the first driving arm and the second driving arm can rotate synchronously in opposite directions relative to the mounting frame; or, the linkage mechanism is arranged between the first shearing part and the second shearing part, so that the first shearing part and the second shearing part can rotate synchronously in opposite directions relative to the mounting frame.

[0006] The shearing mechanism according to the embodiment of the present invention has at least the following beneficial effects: by adopting a transmission structure with tooth matching, different gear ratios can be configured as needed, thereby achieving the needs of saving effort or controlling the size of the shearing opening; the transmission structure is simple and easy to manufacture, and can be set in a smaller installation space, so the structure can be set more compactly and reasonably.

[0007] The linkage mechanism enables the first shearing assembly and the second shearing assembly to be relatively linked, thereby facilitating shearing control of the shearing mechanism.

[0008] In some embodiments of the present invention, the linkage mechanism includes a sliding member slidably arranged on the mounting frame, and the first shearing part and the second shearing part are respectively provided with a sliding structure that slides with the sliding member, thereby realizing the linkage of the first shearing part and the second shearing part.

[0009] In some embodiments of the present invention, the sliding member is a sliding column, the mounting frame is provided with a guide groove that slides with the sliding column, and the first shearing portion and the second shearing portion are respectively provided with linkage grooves that slide with the sliding column, thereby realizing mutual cooperation between the sliding column and the mounting frame, the first shearing portion, and the second shearing portion to achieve linkage.

[0010] In some embodiments of the present invention, the mounting frame includes an upper mounting plate and a lower mounting plate, one end of the upper mounting plate and one end of the lower mounting plate are connected by a first connecting shaft pin, the other end of the upper mounting plate and the other end of the lower mounting plate are connected by a second connecting shaft pin, the first driving arm and the second driving arm are arranged between the upper mounting plate and the lower mounting plate and rotated with the first connecting shaft pin, and the first shear portion and the second shear portion are arranged between the upper mounting plate and the lower mounting plate and rotated with the second connecting shaft pin.

[0011] In some embodiments of the present invention, both the upper mounting plate and the lower mounting plate are provided with guide slide grooves, the two ends of the slide column are guide heads respectively, the middle part of the slide column is a linkage part, the diameter of the guide head is larger than the diameter of the linkage part, the slide column is arranged between the upper mounting plate and the lower mounting plate, and the two guide heads are slidably matched with the guide slide grooves of the upper mounting plate and the lower mounting plate respectively, and the linkage part passes through the linkage slide grooves of the first shear part and the second shear part and slides with the linkage slide grooves. By making the slide column small at both ends and large in the middle, the slidable installation position of the slide column can be directly located when the mounting frame is assembled, and a rotatable fit can be formed with the first shear part and the second shear part. The structure is simple and reasonable, and assembly is convenient.

[0012] In some embodiments of the present invention, the first connecting pin passes through the upper mounting plate, the first driving arm, the second driving arm, and the lower mounting plate in sequence and is connected to the nut, thereby completing the mechanism assembly at the first connecting pin.

[0013] In some embodiments of the present invention, the second connecting pin passes through the upper mounting plate, the first shear portion, the second shear portion, and the lower mounting plate in sequence and is connected to the nut, thereby completing the mechanism assembly at the second connecting pin.

[0014] The gardening shears according to the second embodiment of the present invention include the shearing mechanism of any one of the first embodiments of the present invention, and the gardening shears are provided with two handles respectively connected to the first driving arm and the second driving arm.

[0015] The gardening shears according to the embodiment of the present invention have at least the following beneficial effects: they can meet the needs of gardening shearing and have a simple and reasonable structure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 1 Schematic diagram of the structure of the shearing mechanism according to an embodiment of the present invention;

[0018] Figure 2 Schematic diagram of an exploded view of a shearing mechanism according to an embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the shearing mechanism when it is closed according to an embodiment of the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the shearing mechanism of an embodiment of the present invention when it is opened;

[0021] Figure 5 This is a structural schematic diagram of the shearing mechanism of an embodiment of the present invention when it is opened.

[0022] Reference numerals:

[0023] A first shearing assembly 100, a linkage chute 101, a first driving arm 110, a first driving tooth 111, a first shearing portion 120, and a first driven tooth 121;

[0024] The second shearing assembly 200, the second driving arm 210, the second driving tooth 211, the second shearing portion 220, and the second driven tooth 221;

[0025] Mounting frame 900 , guide slot 901 , slide post 910 , guide head 911 , linkage portion 912 , upper mounting plate 960 , lower mounting plate 920 , first connecting pin 930 , second connecting pin 940 , and nut 950 . DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, if there is a description of first and second, it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] like Figure 1 、 Figure 2 、 Figure 5 As shown, the shearing mechanism according to the embodiment of the present invention includes a mounting frame 900, a first shearing assembly 100, a second shearing assembly 200, and a linkage mechanism; the first shearing assembly 100 includes a first driving arm 110 rotatably arranged on the mounting frame 900 and a first shearing portion 120 rotatably arranged on the mounting frame 900, the first driving arm 110 is provided with a first driving tooth 111, and the first shearing portion 120 is provided with a first driven tooth 121 engaged with the first driving tooth 111; the second shearing assembly 200 includes a second driving arm 210 rotatably arranged on the mounting frame 900 and a first driven tooth 121 engaged with the first driving tooth 111. The second shearing portion 220 of the mounting frame 900, the second driving arm 210 is provided with a second driving tooth 211, and the second shearing portion 220 is provided with a second driven tooth 221 engaged with the second driving tooth 211; wherein, the linkage mechanism is arranged between the first driving arm 110 and the second driving arm 210, so that the first driving arm 110 and the second driving arm 210 can rotate synchronously in the opposite direction relative to the mounting frame 900; or, the linkage mechanism is arranged between the first shearing portion 120 and the second shearing portion 220, so that the first shearing portion 120 and the second shearing portion 220 can rotate synchronously in the opposite direction relative to the mounting frame 900.

[0031] By adopting a transmission structure with tooth matching, different gear ratios can be configured according to needs, so as to achieve the needs of saving effort or controlling the size of the shear opening. The transmission structure is simple and easy to manufacture, and can be set in a smaller installation space. The structure can be set more compactly and reasonably.

[0032] Furthermore, the first shearing assembly 100 and the second shearing assembly 200 are relatively linked by the linkage mechanism, thereby facilitating shearing control of the shearing mechanism.

[0033] Specifically, by configuring a linkage mechanism, problems such as shearing deviation and control trouble during the shearing process can be reduced, and the shearing mechanism using tooth transmission can be easily applied to actual shearing tools, such as gardening shears, rose shears, high branch shears and other gardening tools.

[0034] Specifically, such as Figure 3 、 Figure 4 As shown, the first driving arm 110 and the first shearing portion 120 are distributed on the same side, and the second shearing portion 220 and the second driving arm 210 are distributed on the same side. When the first driving arm 110 and the second driving arm 210 are relatively opened, the first driving arm 110 rotates clockwise and the second driving arm 210 rotates counterclockwise. Driven by the tooth engagement, the first shearing portion 120 rotates counterclockwise and the second shearing portion 220 rotates clockwise, thereby realizing the shearing action.

[0035] In some embodiments of the present invention, the linkage mechanism includes a sliding member slidably arranged on the mounting frame 900, and the first shearing portion 120 and the second shearing portion 220 are respectively provided with a sliding structure that slides with the sliding member, thereby realizing the linkage of the first shearing portion 120 and the second shearing portion 220.

[0036] Specifically, the mounting frame 900 limits the sliding movement of the sliding member. When the first shearing portion 120 moves, the sliding member acts on the first shearing portion 120 and the mounting frame 900 respectively, so that the first shearing portion 120 rotates relative to the mounting frame 900 under the action of the linkage mechanism. Similarly, the second shearing portion 220 rotates relative to the mounting frame 900 under the action of the linkage mechanism, thereby realizing the linkage between the first shearing portion 120 and the second shearing portion 220.

[0037] It is conceivable that the linkage mechanism can also be provided between the first driving arm 110 and the second driving arm 210 , such as by providing mutually meshing gear parts on the first driving arm 110 and the second driving arm 210 , so that the two can be relatively linked.

[0038] like Figure 2 、 Figure 3 、 Figure 4 As shown, in some embodiments of the present invention, the sliding member is a sliding post 910, the mounting frame 900 is provided with a guide groove 901 that slides with the sliding post 910, and the first shear portion 120 and the second shear portion 220 are respectively provided with linkage grooves 101 that slide with the sliding post 910, thereby realizing mutual cooperation between the sliding post 910 and the mounting frame 900, the first shear portion 120, and the second shear portion 220 to realize linkage.

[0039] Specifically, the linkage sliding groove 101 of the first shearing portion 120 and the linkage sliding groove 101 of the second shearing portion 220 are symmetrical to each other and are distributed in a cross shape to achieve the function of reverse linkage.

[0040] Of course, in the specific implementation process, the sliding part can also be a slider set on the mounting frame 900. For example, the mounting frame 900 is a flat plate structure, and two interconnected sliders are distributed on the upper and lower sides of the mounting frame 900 through sliding rails. The two interconnected sliders are respectively slidably matched with the first shearing part 120 and the second shearing part 220, which can also meet the linkage function.

[0041] like Figure 2 As shown, in some embodiments of the present invention, the mounting frame 900 includes an upper mounting plate 960 and a lower mounting plate 920, one end of the upper mounting plate 960 and one end of the lower mounting plate 920 are connected by a first connecting axis pin 930, and the other end of the upper mounting plate 960 and the other end of the lower mounting plate 920 are connected by a second connecting axis pin 940, the first driving arm 110 and the second driving arm 210 are arranged between the upper mounting plate 960 and the lower mounting plate 920 and rotated with the first connecting axis pin 930, and the first shearing portion 120 and the second shearing portion 220 are arranged between the upper mounting plate 960 and the lower mounting plate 920 and rotated with the second connecting axis pin 940.

[0042] Through the above structure, the first driving arm 110 and the second driving arm 210 share a common rotation shaft, the first shearing portion 120 and the second shearing portion 220 share a common rotation shaft, and both form a rotatable connection structure with the mounting frame 900, and the mechanism is relatively simple and reasonable.

[0043] It is conceivable that the mounting frame 900 may also be a single plate structure or an integrated frame structure, which may also meet the installation requirements.

[0044] It is conceivable that in some embodiments of the present invention, the first driving arm 110 and the second driving arm 210 can be connected to different rotating shafts. Similarly, the first shearing portion 120 and the second shearing portion 220 can be connected to different rotating shafts, which can also satisfy the function of the shearing mechanism.

[0045] like Figure 2As shown, in some embodiments of the present invention, the upper mounting plate 960 and the lower mounting plate 920 are both provided with a guide slide groove 901, and the two ends of the slide column 910 are guide heads 911 respectively, and the middle part of the slide column 910 is a linkage part 912. The diameter of the guide head 911 is larger than the diameter of the linkage part 912. The slide column 910 is arranged between the upper mounting plate 960 and the lower mounting plate 920, and the two guide heads 911 are slidably matched with the guide slide grooves 901 of the upper mounting plate 960 and the lower mounting plate 920 respectively. The linkage part 912 passes through the linkage slide groove 101 of the first shear part 120 and the second shear part 220 and slides with the linkage slide groove 101. By making the slide column 910 small at both ends and large in the middle, the slidable installation position of the slide column 910 can be directly positioned when the mounting frame 900 is assembled, and it can form a rotatable fit with the first shear part 120 and the second shear part 220. The structure is simple and reasonable, and the assembly is convenient.

[0046] It is conceivable that in some embodiments of the present invention, the sliding column 910 can also be set as a long column of equal diameter, and then limit screws are set at both ends thereof. The sliding column 910 can also be installed into the upper mounting plate 960, the first shear portion 120, the second shear portion 220 and the lower mounting plate 920, and fixed by the limit screws.

[0047] like Figure 2 As shown, in some embodiments of the present invention, the first connecting pin 930 passes through the upper mounting plate 960, the first driving arm 110, the second driving arm 210, and the lower mounting plate 920 in sequence and is connected to the nut 950, thereby completing the mechanism assembly at the first connecting pin 930.

[0048] like Figure 2 As shown, in some embodiments of the present invention, the second connecting pin 940 passes through the upper mounting plate 960, the first shear portion 120, the second shear portion 220, and the lower mounting plate 920 in sequence and is connected to the nut 950, thereby completing the mechanism assembly at the second connecting pin 940.

[0049] It is conceivable that the first connecting pin 930 and the second connecting pin 940 can also be fixedly connected to the mounting bracket 900 by riveting, welding, or the like.

[0050] The gardening shears according to the second embodiment of the present invention include the shearing mechanism of any one of the first embodiments of the present invention. The gardening shears are equipped with two handles connected to the first driving arm 110 and the second driving arm 210, respectively, which can meet the needs of gardening shearing and have a simple and reasonable structure.

[0051] Of course, the invention is not limited to the above-mentioned embodiments. Those skilled in the art may make equivalent modifications or substitutions without violating the spirit of the invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A shearing mechanism, characterized in that: include: Mounting rack (900); A first shearing assembly (100), comprising a first driving arm (110) rotatably disposed on the mounting frame (900) and a first shearing portion (120) rotatably disposed on the mounting frame (900), the first driving arm (110) being provided with a first driving tooth (111), and the first shearing portion (120) being provided with a first driven tooth (121) meshing with the first driving tooth (111); A second shearing assembly (200), the second shearing assembly (200) comprising a second driving arm (210) rotatably disposed on the mounting frame (900) and a second shearing portion (220) rotatably disposed on the mounting frame (900), the second driving arm (210) being provided with a second driving tooth (211), and the second shearing portion (220) being provided with a second driven tooth (221) meshing with the second driving tooth (211); a linkage mechanism, the linkage mechanism being arranged between the first shearing portion (120) and the second shearing portion (220), so as to enable the first shearing portion (120) and the second shearing portion (220) to rotate synchronously in opposite directions relative to the mounting frame (900); The linkage mechanism comprises a sliding member slidably arranged on the mounting frame (900), and the first shearing portion (120) and the second shearing portion (220) are respectively provided with a sliding structure that slidably cooperates with the sliding member; The sliding member is a sliding column (910), the mounting frame (900) is provided with a guide sliding groove (901) that is slidably matched with the sliding column (910), and the first shearing portion (120) and the second shearing portion (220) are respectively provided with a linkage sliding groove (101) that is slidably matched with the sliding column (910); The mounting frame (900) includes an upper mounting plate (960) and a lower mounting plate (920), one end of the upper mounting plate (960) and one end of the lower mounting plate (920) are connected via a first connecting pin (930), the other end of the upper mounting plate (960) and the other end of the lower mounting plate (920) are connected via a second connecting pin (940), the first driving arm (110) and the second driving arm (210) are arranged between the upper mounting plate (960) and the lower mounting plate (920) and are rotatably engaged with the first connecting pin (930), the first shearing portion (120) and the second shearing portion (220) are arranged between the upper mounting plate (960) and the lower mounting plate (920) and are rotatably engaged with the second connecting pin (940); The first connecting pin (930) passes through the upper mounting plate (960), the first driving arm (110), the second driving arm (210), and the lower mounting plate (920) in sequence and is then connected to the nut (950); The second connecting pin (940) sequentially passes through the upper mounting plate (960), the first shearing portion (120), the second shearing portion (220), and the lower mounting plate (920) and is then connected to the nut (950).

2. The shearing mechanism according to claim 1, characterized in that: The upper mounting plate (960) and the lower mounting plate (920) are both provided with the guide slot (901), the two ends of the slide column (910) are guide heads (911), the middle part of the slide column (910) is a linkage part (912), the diameter of the guide head (911) is larger than the diameter of the linkage part (912), the slide column (910) is arranged between the upper mounting plate (960) and the lower mounting plate (920), the two guide heads (911) are respectively slidably matched with the guide slots (901) of the upper mounting plate (960) and the lower mounting plate (920), and the linkage part (912) passes through the linkage slots (101) of the first shearing part (120) and the second shearing part (220) and is slidably matched with the linkage slots (101).

3. A garden shear, characterized in that: include: A shearing mechanism as claimed in claim 1 or 2.

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