Hedge trimmer capable of preventing blade connection position from being blocked

Abstract

The utility model relates to a hedge trimmer capable of preventing a blade connecting position from being blocked. The hedge trimmer comprises a machine shell, a driving structure arranged in the machine shell and a blade structure extending out of the machine shell. The blade structure further comprises a connecting plate fixedly arranged on the upper end face of the upper blade and a blade sleeve arranged on the upper end face of the connecting plate, the connecting plate and one end of the blade sleeve are fixedly arranged in the machine shell, and a plurality of first strip-shaped through holes are distributed in the upper blade in the extending direction of the upper blade. A plurality of second strip-shaped through holes are distributed in the lower blade in the extending direction of the lower blade, a screw and a nut penetrate through the second strip-shaped through holes, the corresponding first strip-shaped through holes and the connecting plate from bottom to top and are embedded in the cutter sleeve, and the cutter sleeve and the end, away from the machine shell, of the connecting plate are jointly connected with a blade plug. The utility model has the following advantages: through the arrangement of the cutter sleeve, the closed storage of a plurality of nuts is realized, the blockage at the joint of the blades is avoided, the overall structural strength of the blades is improved, and the service life is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of electric tools, concretely relates to a hedge trimmer capable of preventing the connection of blades from being blocked. BACKGROUND

[0002] The hedge trimmer is also called a hedge cutter, and is suitable for professional pruning in the aspects of tea pruning, parks, gardens, roadside hedges and other landscaping, has good durability, can be used as a professional commercial cutter, and is one of important devices for landscaping.

[0003] The blade structure of the existing hedge trimmer is composed of blades that move reciprocatingly horizontally and staggeredly, the upper end of the upper blade has a connecting plate fixed to the shell, a plurality of studs are vertically penetrated through the connecting plate and the two blades, the studs are screwed by nuts arranged on the connecting plate, and the two blades can only move reciprocatingly horizontally under the vertical limiting action of the plurality of studs. UTILITY MODEL CONTENTS

[0004] The utility model discloses a hedge trimmer capable of preventing the connection of blades from being blocked, which realizes the closed storage of a plurality of nuts, avoids the blocking of the connection of blades, improves the structural strength of the whole blade, and guarantees the service life.

[0005] The utility model discloses a hedge trimmer capable of preventing the connection of blades from being blocked, which realizes the closed storage of a plurality of nuts, avoids the blocking of the connection of blades, improves the structural strength of the whole blade, and guarantees the service life.

[0006] The blade structure further comprises a connecting plate fixedly arranged on the upper end face of the upper blade and a blade sleeve arranged on the upper end face of the connecting plate, the upper blade and the lower blade have a movable gap therebetween, one end of the connecting plate and the blade sleeve is fixedly arranged in the shell, a plurality of strip-shaped through holes one are distributed on the upper blade along the extension direction of the upper blade, a plurality of strip-shaped through holes two are distributed on the lower blade along the extension direction of the lower blade, a screw rod is vertically penetrated through the strip-shaped through holes two, the corresponding strip-shaped through holes one and the connecting plate from bottom to top, the upper end of the screw rod is threadedly connected with a nut, the nut is embedded in the blade sleeve, and the blade sleeve and the connecting plate, away from the shell, are jointly connected with a blade plug.

[0007] The further improvement of the utility model lies in that: the cutter sleeve comprises two bottom plate parts distributed along the radial direction of the connecting plate, the upper end face of each bottom plate part is provided with a reinforcing folded plate part, the upper ends of the two reinforcing folded plate parts are jointly connected with a horizontal cover plate part, the two bottom plate parts are provided with a gap for the screw rod to penetrate, the lower end face of the nut is in contact with the upper end faces of the two bottom plate parts, and the bottom plate part, the reinforcing folded plate part and the horizontal cover plate part form an integrated forming structure with a cavity inside.

[0008] The further improvement of the utility model lies in that: the cutter plug has an L-shaped part with an opening facing the cutter sleeve and the connecting plate, and a clamping part arranged inside the L-shaped part and embedded with the cavity, and the L-shaped part and the clamping part are vertically penetrated with a bolt.

[0009] The further improvement of the utility model lies in that: the driving structure comprises a motor and a gear box group arranged in the shell, the gear box group comprises an upper gear box cover and a lower gear box cover fixedly arranged in sequence, and the lower gear box cover is sequentially penetrated with a second strip-shaped through hole, a first strip-shaped through hole, the connecting plate, the cutter sleeve and the upper gear box cover with a second bolt.

[0010] The driving end of the motor is provided with a flat plate gear, the end part of the lower cutter and the upper cutter is provided with a driving oval ring, the driving oval ring is provided with an eccentric wheel, the two eccentric wheels are arranged in a staggered mode, the lower gear box cover is further provided with a large gear engaged with the flat plate gear, the center of the large gear is provided with a main shaft, and the main shaft is eccentrically penetrated through the eccentric wheels.

[0011] The further improvement of the utility model lies in that: the lower gear box cover is provided with a limiting groove for limiting the horizontal reciprocating movement of the end part of the lower cutter.

[0012] The further improvement of the utility model lies in that: the end part of the shell close to the cutter structure is provided with an inclined chip removal plate.

[0013] The further improvement of the utility model lies in that: the front side of the shell is provided with an auxiliary handle, and the rear bottom of the shell is provided with a detachable battery.

[0014] Compared with the prior art, the utility model has the following advantages:

[0015] 1、The utility model sets up the cutter sleeve of special structure on the upper end of the connecting plate, not only realizes the closed storage of multiple nuts, avoids the blockage of the stud nut at the cutter connecting part, provides the convenience for the replacement of the upper and lower cutters, improves the structural strength of the cutter as a whole and guarantees the service life.

[0016] 2. The special structure of the blade plug is arranged at the outer side end of the connecting plate and the cutter sleeve, and further ensures the stability of the connection between the connecting plate and the cutter sleeve.

[0017] 3. When the hedge trimmer trims green plants, the setting of the chip guard plate has a certain blocking and isolating effect on sundries, so as to avoid that the sundries dust directly contacts the operator and causes harm to the operator. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the hedge trimmer for preventing the blade connection from being blocked.

[0019] Figure 2 It is a structural schematic view of the hedge trimmer for preventing the blade connection from being blocked. Figure 1 It is a connection schematic view of the driving structure and the blade structure.

[0020] Figure 3 It is a connection schematic view of the driving structure and the blade structure. Figure 1 It is an internal schematic view of the driving structure.

[0021] Figure 4 It is an internal schematic view of the driving structure. Figure 1 It is a split schematic view of the driving structure and the blade structure.

[0022] Figure 5 It is a split schematic view of the driving structure and the blade structure. Figure 1 It is a split schematic view of the cutter sleeve and the blade plug of the blade structure.

[0023] Figure 6 It is a split schematic view of the driving structure and the blade structure. Figure 1 It is a connection schematic view of the nut and the cutter sleeve.

[0024] REFERENCE NUMERALS IN DRAWINGS

[0025] 1 - machine shell, 2 - driving structure, 3 - blade structure, 4 - chip guard plate, 5 - auxiliary handle, 6 - detachable battery;

[0026] 21 - motor, 22 - gear box upper cover, 23 - gear box lower cover, 24 - bolt two, 25 - driving oval ring, 26 - eccentric wheel, 27 - small flat plate tooth, 28 - large gear, 29 - main shaft, 210 - limiting clamping groove;

[0027] 31 - upper blade, 32 - lower blade, 33 - connecting plate, 34 - cutter sleeve, 35 - movable gap, 36 - strip-shaped through hole one, 37 - screw rod, 38 - limiting through hole two, 39 - blade plug, 310 - nut, 311 - bolt one; 341 - bottom plate part, 342 - reinforced folding plate part, 343 - horizontal cover plate part, 344 - cavity; 391 - L-shaped part, 392 - clamping part. DETAILED DESCRIPTION

[0028] In order to deepen the understanding of the utility model, the utility model will be further described in combination with embodiments and drawings below, and the embodiments are only used to explain the utility model and do not constitute the limitation to the protection scope of the utility model.

[0029] In the description of the utility model, it is understood that the terms indicate the orientation or positional relationship, such as the orientation or positional relationship based on the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated structure or unit must have a particular orientation, therefore, it cannot be understood as the limitation to the utility model.

[0030] In the utility model, except for another explicit provision and limitation, if there are terms such as “connection”, “provided with”, “have” and the like, they should be understood in a broad sense, for example, it can be fixed connection, can be detachable connection, or integral connection, can be mechanical connection, can be directly connected, can be connected through an intermediate medium, for those skilled in the art, the basic meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] A hedge trimmer capable of preventing the connection of blades from being blocked, referring to Figures 1 to 4 , comprising a shell 1, a driving structure 2 arranged in the shell 1 and a blade structure 3 arranged outside the shell 1, the blade structure 3 is composed of an upper blade 31 and a lower blade 32 arranged in a stack, the upper blade 31 and the lower blade 32 are connected with the driving structure 2 and move reciprocatingly in the horizontal direction under the action of the driving structure 2;

[0032] The blade structure 3 further comprises a connecting plate 33 fixedly arranged on the upper end face of the upper blade 31 and a blade sleeve 34 arranged on the upper end face of the connecting plate 33, the upper blade 31 has a movable gap 35 with the lower blade 32, one end of the connecting plate 33 and the blade sleeve 34 is fixedly arranged in the shell 1, a plurality of strip-shaped through holes one 36 are distributed on the upper blade 31 along the extension direction of the upper blade 31, a plurality of strip-shaped through holes two 38 are distributed on the lower blade 32 along the extension direction of the lower blade 32, a screw rod 37 is arranged from bottom to top through the strip-shaped through hole two 38, the corresponding strip-shaped through hole one 36 and the connecting plate 33, the upper end of the screw rod 37 is threadedly connected with a nut 310, referring to Figure 6 , the nut 310 is embedded in the blade sleeve 34, and the blade sleeve 34 and the connecting plate 33 are jointly connected with a blade plug 39 at the end away from the shell 1.

[0033] The utility model sets the blade sleeve 34 with special structure on the upper end of the connecting plate 33, not only realizes the closed storage of a plurality of nuts 310, avoids the blockage of the stud nut at the blade connection, provides convenience for the subsequent replacement of the upper and lower blades, and improves the overall structural strength of the blade, ensures the service life, sets the blade plug 39 with special structure on the outer side end of the connecting plate 33 and the blade sleeve 34, further ensures the connection stability between the connecting plate 33 and the blade sleeve 34.

[0034] On the basis of the embodiment, the tool pocket 34 comprises two bottom plate portions 341 distributed along the radial direction of the connecting plate 33, the upper end face of each bottom plate portion 341 has a reinforcing folded plate portion 342, the upper ends of the two reinforcing folded plate portions 342 are jointly connected with a horizontal cover plate portion 343, the two bottom plate portions 341 have a gap through which the screw rod 37 penetrates, the lower end face of the nut 310 is in contact with the upper end faces of the two bottom plate portions 341, and the bottom plate portion 341, the reinforcing folded plate portion 342 and the horizontal cover plate portion 343 form an integrally formed structure with a cavity 344 inside.

[0035] The tool pocket 34 in the application adopts an integrally formed structure of bending back into a cage, which not only realizes the lightweight design of the tool pocket 34, but also guarantees the structural strength of the tool pocket 34 itself, and plays a good supporting and stabilizing role on the upper blade 31 and the lower blade 32 under the gravity of the upper and lower blades and the horizontal reciprocating cutting action.

[0036] On the basis of the embodiment, referring to Figure 5 , the blade plug 39 has an L-shaped portion 391 with an opening facing the tool pocket 34 and the connecting plate 33, and a clamping portion 392 placed inside the L-shaped portion 391 and embedded with the cavity 344, and a bolt 311 vertically penetrates the L-shaped portion 391 and the clamping portion 392.

[0037] On the basis of the embodiment, the driving structure 2 comprises a motor 21 and a gear box set placed in the casing 1, the gear box set comprises an upper gear box cover 22 and a lower gear box cover 23 fixedly arranged in sequence, and a bolt 24 penetrates the strip-shaped through hole two 38, the strip-shaped through hole one 36, the connecting plate 33, the tool pocket 34 and the upper gear box cover 22 in sequence from bottom to top.

[0038] The driving end of the motor 21 has a small flat plate tooth 27, the end of the lower blade 32 and the upper blade 31 has a driving oval ring 25, the driving oval ring 25 has an eccentric wheel 26 inside, the two eccentric wheels 26 are arranged in a staggered manner, the lower gear box cover 23 further has a large gear 28 engaged with the small flat plate tooth 27, the center of the large gear 28 has a main shaft 29, the main shaft 29 eccentrically penetrates the eccentric wheels 26, when the motor 21 is started, the small flat plate tooth 27 and the large gear 28 are engaged with each other, at this time, the main shaft 29 rotating with the large gear 28 synchronously drives the two eccentric wheels 26 to make eccentric motion, and further drives the upper blade 31 and the lower blade 32 to move in a staggered manner.

[0039] In the application, the driving structure 2 adopts double eccentric wheels 26, the main shaft 29 realizes staggered rotation of the two eccentric wheels 26 under the driving action of the motor 21, so as to realize the up-down staggered reciprocating movement of the upper blade 31 and the lower blade 32 connected with the two driving elliptical rings 25 respectively, compared with the traditional single eccentric wheel design, the driving structure in the application has higher transmission efficiency and stability.

[0040] On the basis of the embodiment, the gear box lower cover has a limiting clamping groove 210 for limiting the horizontal reciprocating movement of the end part of the lower blade 32, the design of the limiting clamping groove 210 has a good horizontal limiting effect on the horizontal reciprocating movement of the upper blade 31 and the lower blade 32, and ensures the horizontal degree of the reciprocating movement.

[0041] On the basis of the embodiment, the end part of the casing 1 close to the blade structure 3 has an obliquely arranged chip stop plate 4, when the hedge trimmer trims green plants, the arrangement of the chip stop plate 4 has a certain blocking and isolating effect on sundries, so as to avoid that the sundries dust directly contacts the operator and causes harm to the operator.

[0042] On the basis of the embodiment, the front side of the casing 1 has an auxiliary handle 5, and the rear side and the bottom of the casing 1 have a detachable battery 6.

[0043] It should be understood by those skilled in the art that the application is not limited by the above embodiments, the above embodiments and the description in the specification are only to illustrate the principle of the application, various changes and improvements can be made to the application without departing from the spirit and scope of the application, and these changes and improvements all fall within the scope of the application. The scope of protection of the application is defined by the appended claims and their equivalents.

Claims

1. A hedge trimmer that prevents clogging at the blade connection point, characterized in that: It includes a housing (1), a drive structure (2) placed inside the housing (1), and a blade structure (3) extending out of the housing (1). The blade structure (3) consists of an upper blade (31) and a lower blade (32) stacked on top of each other. The upper blade (31) and the lower blade (32) are connected to the drive structure (2) and move back and forth in the horizontal direction under the action of the drive structure (2). The blade structure (3) further includes a connecting plate (33) fixedly disposed on the upper end face of the upper blade (31) and a blade sleeve (34) disposed on the upper end face of the connecting plate (33). There is a movable gap (35) between the upper blade (31) and the lower blade (32). One end of the connecting plate (33) and the blade sleeve (34) are fixedly disposed inside the housing (1). Multiple strip-shaped through holes (36) are distributed on the upper blade (31) along the extension direction of the upper blade (31). The lower blade ( 32) Multiple strip-shaped through holes (38) are distributed along the extension direction of the lower blade (32). A screw (37) runs through the strip-shaped through hole (38), the corresponding strip-shaped through hole (36), and the connecting plate (33) from bottom to top. A nut (310) is threaded to the upper end of the screw (37). The nut (310) is embedded in the blade sleeve (34). The blade sleeve (34) and the end of the connecting plate (33) away from the machine housing (1) are connected together to the blade plug (39).

2. The hedge trimmer for preventing clogging at the blade connection point according to claim 1, characterized in that: The blade sheath (34) includes two base plate portions (341) distributed along the radial direction of the connecting plate (33). Each base plate portion (341) has a reinforcing folding plate portion (342) on its upper end face. The upper ends of the two reinforcing folding plate portions (342) are connected to a horizontal cover plate portion (343). There is a gap between the two base plate portions (341) for the screw (37) to pass through. The lower end face of the nut (310) is in contact with the upper end face of the two base plate portions (341). The base plate portions (341), the reinforcing folding plate portions (342), and the horizontal cover plate portions (343) form an integral molded structure with an internal cavity (344).

3. A hedge trimmer for preventing clogging at the blade connection point according to claim 2, characterized in that: The blade plug (39) has an L-shaped part (391) with an opening facing the blade sleeve (34) and the connecting plate (33) and a locking part (392) placed inside the L-shaped part (391) and fitted into the cavity (344). A bolt (311) runs vertically through the L-shaped part (391) and the locking part (392).

4. A hedge trimmer for preventing clogging at the blade connection point according to claim 3, characterized in that: The drive structure (2) includes a motor (21) placed inside the housing (1) and a gearbox assembly. The gearbox assembly includes a gearbox upper cover (22) and a gearbox lower cover (23) fixed at the top and bottom. From bottom to top, it has a second through hole (38), a first through hole (36), a connecting plate (33), a tool holder (34), and a second bolt (24) passing through the gearbox upper cover (22). The drive end of the motor (21) has a small flat plate tooth (27). The ends of the lower blade (32) and the upper blade (31) both have a drive elliptical ring (25). The drive elliptical ring (25) has an eccentric wheel (26). The upper and lower eccentric wheels (26) are staggered. The gearbox cover (23) also has a large gear (28) that meshes with the small flat plate tooth (27). The center of the large gear (28) has a main shaft (29). The main shaft (29) passes through the eccentric wheel (26) eccentrically. When the motor (21) starts, it drives the small flat plate tooth (27) to mesh with the large gear (28). At this time, the main shaft (29) rotates synchronously with the rotation of the large gear (28) and drives the upper and lower eccentric wheels (26) to make eccentric movements, thereby driving the upper blade (31) and the lower blade (32) to make alternating reciprocating movements.

5. A hedge trimmer for preventing clogging at the blade connection point according to claim 4, characterized in that: The gearbox lower cover has a limiting groove (210) that limits the horizontal reciprocating movement of the end of the lower blade (32).

6. A hedge trimmer for preventing clogging at the blade connection point according to claim 5, characterized in that: The housing (1) has an inclined chip baffle (4) at the end near the blade structure (3).

7. A hedge trimmer for preventing clogging at the blade connection point according to claim 6, characterized in that: The front side of the housing (1) has an auxiliary handle (5), and the bottom rear side of the housing (1) has a removable battery (6).

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