CN215683529U

CN215683529U - Blade assembly for hedge trimmer and hedge trimmer

Info

Publication number: CN215683529U
Application number: CN202121051158.3U
Authority: CN
Inventors: 余华
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-17
Filing date: 2021-05-17
Publication date: 2022-02-01
Anticipated expiration: 2031-05-17

Abstract

The utility model belongs to the technical field of electric tools, in particular to a blade assembly for a hedge trimmer and the hedge trimmer, which comprises an upper blade, a lower blade, a blade frame and a transmission mechanism, wherein the upper blade comprises an upper transmission part and an upper cutting part, the upper transmission part is detachably connected with the upper cutting part, and one end of the upper transmission part is connected with the transmission mechanism; the lower blade comprises a lower transmission part and a lower cutting part, the lower transmission part is detachably connected with the lower cutting part, and one end of the lower transmission part is connected with the transmission mechanism. According to the utility model, the upper blade and the lower blade connected with the transmission mechanism are arranged into the transmission part and the cutting part which are detachably connected, so that blades of different types can be replaced according to requirements, and the transmission part and the cutting part only need to be disassembled and assembled when the blades are replaced, and the whole transmission mechanism does not need to be disassembled together, so that the operation is simple and convenient, the service life is prolonged, and the purchase cost is reduced.

Description

Blade assembly for hedge trimmer and hedge trimmer

Technical Field

The utility model belongs to the technical field of electric tools, and particularly relates to a blade assembly for a hedge trimmer and the hedge trimmer.

Background

At present, hedge trimmers are mainly used for garden trimming and tea leaf harvesting, and generally comprise a handle, a driving mechanism, a transmission mechanism, a blade mechanism and the like, wherein the driving mechanism provides power to drive the blade mechanism to work through the transmission mechanism, a gear rotates by the work of an electric motor, and each eccentric circular plate on the gear rotates together with the gear to drive a shearing blade to perform relative reciprocating motion to realize trimming operation.

The hedge trimmers on the market are basically integrated, however, the double-edge hedge trimmers with double blades are mostly used when trimming gardens, and the single-edge hedge trimmers with tea collecting baffles are needed when harvesting tea. In order to satisfy different user demands, the structure of integral type must be unpack the machine apart when changing the blade, unpack apart the drive disk assembly in the gear box in proper order and then change the blade and adorn the machine again and recover according to the order, the operation is complicated, it is all very inconvenient to change the maintenance, it is also higher to user's self technical level requirement, and drive disk assembly and blade often are supporting use, need to change reduction gear and blade together when changing the blade, acquisition cost is higher, dismouting that relapse simultaneously also causes part wearing and tearing easily and falls into impurity such as dust into the gear box, hedge trimmer's life has been reduced.

Disclosure of Invention

The utility model aims to provide a blade assembly for a hedge trimmer and the hedge trimmer, which have simple structure and convenient and labor-saving blade replacement.

The purpose of the utility model is realized as follows:

a blade assembly for a hedge trimmer comprises an upper blade, a lower blade, a blade frame and a transmission mechanism, wherein the upper blade and the lower blade are arranged on the blade frame in an overlapping mode, the rear ends of the upper blade and the lower blade are connected with the transmission mechanism, the upper blade comprises an upper transmission part and an upper cutting part, the upper transmission part and the upper cutting part are detachably connected, and one end of the upper transmission part is connected with the transmission mechanism; the lower blade comprises a lower transmission part and a lower cutting part, the lower transmission part is detachably connected with the lower cutting part, and one end of the lower transmission part is connected with the transmission mechanism.

Furthermore, a connecting piece is arranged between the upper transmission part and the upper cutting part, and two ends of the connecting piece are respectively connected with the upper transmission part and the upper cutting part; and a connecting piece is also arranged between the lower transmission part and the lower cutting part, and two ends of the connecting piece are respectively connected with the lower transmission part and the lower cutting part.

Furthermore, a first mounting hole is formed in the upper transmission part, a second mounting hole is formed in the upper cutting part, and two ends of the connecting piece are respectively connected with the first mounting hole and the second mounting hole; the lower transmission part is provided with a third mounting hole, the lower cutting part is provided with a fourth mounting hole, and two ends of the connecting piece are respectively connected with the third mounting hole and the fourth mounting hole.

Furthermore, the connecting piece is a metal plate, connecting holes are formed in two ends of the metal plate, and the connecting holes are respectively connected with the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole through fixing screws.

Furthermore, the connecting ends of the upper transmission part and the upper cutting part are respectively provided with an upper connecting part, and the first mounting hole and the second mounting hole are respectively arranged on the upper connecting parts; lower connecting portion have all been formed to the link of lower transmission portion and lower cutting portion, third mounting hole and fourth mounting hole are seted up respectively on the lower connecting portion.

Furthermore, the transmission mechanism comprises a transmission gear, an eccentric assembly is arranged on the transmission gear, the eccentric assembly comprises an upper eccentric wheel and a lower eccentric wheel, a partition plate is arranged between the upper eccentric wheel and the lower eccentric wheel, and the transmission gear, the upper eccentric wheel, the partition plate and the lower eccentric wheel are connected through a pin shaft; waist-shaped transmission holes are formed in the upper transmission part and the lower transmission part, the transmission holes are respectively connected with the upper eccentric wheel and the lower eccentric wheel, and the upper blade and the lower blade do relative reciprocating motion under the linkage of the transmission gear and the eccentric assembly.

Furthermore, the upper blade and the lower blade are respectively provided with a limiting hole, a limiting part is arranged in the limiting hole, one end of the limiting part is arranged in the limiting hole, and the other end of the limiting part is fixedly connected with the blade frame.

The utility model provides a hedge trimmer, includes the fuselage, and the below of fuselage is provided with blade installation room, installs the blade subassembly that is used for the hedge trimmer in the blade installation room, the blade installation room is provided with gear case lid and connection end cover outward, and the setting can be dismantled to the connection end cover.

Further, install in the gear case lid drive mechanism, install in the connection end cover go up the portion of dismantling on blade and the bottom knife.

Further, still include actuating mechanism on the fuselage, actuating mechanism with drive mechanism connects, the rear end of fuselage is provided with the main handle of holding, is provided with starting switch and safety switch on the main handle of holding, the front end of fuselage is provided with anti-skidding handle and safety shield.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

according to the utility model, the upper blade and the lower blade connected with the transmission mechanism are arranged into the transmission part and the cutting part which are detachably connected, so that blades of different types can be replaced according to different requirements, and the blades are replaced only by disassembling and assembling the upper transmission part, the upper cutting part, the lower transmission part and the lower cutting part without disassembling the whole transmission mechanism together, so that the operation is simple and convenient, the requirement on the technical level of a user is lower, the use by the user is greatly facilitated, the parts are prevented from being abraded due to repeated disassembly and assembly, and impurities such as dust and the like are prevented from falling into the gear box, and the service life of the gear box is prolonged; in addition, one set of transmission mechanism of the utility model can be adapted to different types of blades, and the blades do not need to be purchased and replaced together with different blades, thereby greatly reducing the purchase cost.

Drawings

Fig. 1 is a perspective view of the hedge trimmer.

Fig. 2 is a sectional view of the hedge trimmer.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a partial structural schematic view of the connecting end cover opened below the hedge trimmer body.

Fig. 5 is a partial structural schematic view of the connection end cover and the gear box cover opened below the hedge trimmer body.

FIG. 6 is a schematic structural view of the blade assembly of the present invention.

Fig. 7 is a partially enlarged view at B in fig. 6.

FIG. 8 is a schematic view of a portion of the blade assembly of the present invention.

FIG. 9 is an exploded view of the blade assembly of the present invention.

Fig. 10 is a schematic view of the structure of the upper blade and the lower blade.

Fig. 11 is a schematic view of the structure of the connector.

Fig. 12 is a schematic view of the structure of the transmission mechanism.

The reference numerals in the figures denote the meanings:

1-upper blade; 2-lower blade; 3-a blade holder; 4-a transmission mechanism; 5-an upper transmission part; 6-upper cut;

7-a lower transmission part; 8-lower cutting part; 9-a connector; 10-a first mounting hole; 11-a second mounting hole;

12-a third mounting hole; 13-a fourth mounting hole; 14-connecting holes; 15-fixing screws; 16-an upper connecting part;

17-a lower connecting portion; 18-a transmission gear; 19-an eccentric assembly; 20-an upper eccentric wheel; 21-lower eccentric wheel;

22-a separator; 23-a backing plate; 24-a pin shaft; 25-pin holes; 26-a rotating shaft; 27-shaft hole; 28-a drive bore;

29-a limiting hole; 30-a limit piece; 31-a blade mounting chamber; 32-gearbox cover; 33-connecting the end cap;

34-a motor output shaft; 35-motor gear; 36-a reduction gear assembly; 37-a main grip handle;

38-start switch; 39-safety switch; 40-anti-slip handle; 41-safety barrier.

Detailed Description

The utility model is further described below with reference to specific examples:

as shown in fig. 9, a blade assembly for a hedge trimmer comprises an upper blade 1, a lower blade 2, a blade holder 3 and a transmission mechanism 4, wherein the upper blade 1 and the lower blade 2 are stacked on the blade holder 3, the rear ends of the upper blade 1 and the lower blade 2 are connected with the transmission mechanism 4, the upper blade 1 comprises an upper transmission part 5 and an upper cutting part 6, the upper transmission part 5 is detachably connected with the upper cutting part 6, and one end of the upper transmission part 5 is connected with the transmission mechanism 4; the lower blade 2 comprises a lower transmission part 7 and a lower cutting part, the lower transmission part 7 is detachably connected with the lower cutting part, and one end of the lower transmission part 7 is connected with the transmission mechanism 4.

According to the utility model, the upper blade 1 and the lower blade 2 connected with the transmission mechanism 4 are arranged into the transmission part and the cutting part which are detachably connected, so that blades of different types can be replaced according to different requirements, and only the upper transmission part 5, the upper cutting part 6, the lower transmission part 7 and the lower cutting part need to be disassembled when the blades are replaced, the whole transmission mechanism 4 does not need to be disassembled together, the operation is simple and convenient, the requirement on the technical level of a user is lower, the use by the user is greatly facilitated, the abrasion of parts caused by repeated disassembly and assembly and the falling of impurities such as dust into a gear box are avoided, and the service life of the gear box is prolonged; in addition, one set of transmission mechanism 4 of the utility model can be adapted to different types of blades, and the blades do not need to be purchased together with different blades and replaced together, thereby greatly reducing the purchase cost.

Preferably, a connecting piece 9 is arranged between the upper transmission part 5 and the upper cutting part 6, and two ends of the connecting piece 9 are respectively connected with the upper transmission part 5 and the upper cutting part 6; a connecting piece 9 is also arranged between the lower transmission part 7 and the lower cutting part, and two ends of the connecting piece 9 are respectively connected with the lower transmission part 7 and the lower cutting part.

As shown in fig. 6-8, the present invention discloses a simple detachable connection manner, and compared with the direct connection manner of inserting and clamping the transmission portion and the cutting portion, the connection manner is provided by setting the connection plate to connect the upper transmission portion 5 and the upper cutting portion 6, and the upper transmission portion 5 and the upper cutting portion 6, respectively, so that the structure is simple, but the connection is more stable and is not easy to fall off.

Preferably, a first mounting hole 10 is formed in the upper transmission part 5, a second mounting hole 11 is formed in the upper cutting part 6, and two ends of the connecting piece 9 are respectively connected with the first mounting hole 10 and the second mounting hole 11; and a third mounting hole 12 is formed in the lower transmission part 7, a fourth mounting hole 13 is formed in the lower cutting part, and two ends of the connecting piece 9 are respectively connected with the third mounting hole 12 and the fourth mounting hole 13. The connecting mode of the mounting holes has simple structure and easy processing. Preferably, the two ends of the connecting piece 9 are downward protruded to form clamping parts, and the clamping parts are matched with the mounting holes, so that fixed connection can be realized.

Preferably, the connecting member 9 is a metal plate, two ends of the metal plate are provided with connecting holes 14, and the connecting holes 14 are respectively connected with the first mounting hole 10, the second mounting hole 11, the third mounting hole 12 and the fourth mounting hole 13 through fixing screws 15.

As shown in figure 11, the utility model discloses a specific connection mode of the connecting piece 9, the transmission part and the cutting part, a connecting hole 14 and a mounting hole are respectively penetrated through by a fixing screw 15, the structure is simple, the assembly and disassembly are convenient, and the blade can be replaced only by disassembling the fixing screw 15.

Preferably, the connecting ends of the upper transmission part 5 and the upper cutting part 6 are both formed with an upper connecting part 16, and the first mounting hole 10 and the second mounting hole 11 are respectively opened on the upper connecting part 16; lower connecting portion 17 is all formed at the link of lower transmission portion 7 and lower cutting portion, third mounting hole 12 and fourth mounting hole 13 are seted up respectively on lower connecting portion 17.

Referring to fig. 10, the utility model discloses a specific installation hole forming position, wherein an upper connecting portion 16 is formed at the connecting end of each of the upper transmission portion 5 and the upper cutting portion 6 in a protruding manner, and a lower connecting portion 17 is formed at the connecting end of each of the lower transmission portion 7 and the lower cutting portion in a protruding manner, so that the structure is simple, and the connecting strength can be ensured.

As shown in fig. 12, preferably, the transmission mechanism 4 includes a transmission gear 18, an eccentric assembly 19 is disposed on the transmission gear 18, the eccentric assembly 19 includes an upper eccentric wheel 20 and a lower eccentric wheel 21 which are disposed in a staggered manner, and a partition 22 is disposed between the upper eccentric wheel 20 and the lower eccentric wheel 21; waist-shaped transmission holes 28 are formed in the upper transmission portion 5 and the lower transmission portion 7, the length direction of each transmission hole 28 is perpendicular to the length direction of the corresponding blade, the transmission holes 28 are respectively connected with the upper eccentric wheel 20 and the lower eccentric wheel 21, a backing plate 23 is arranged above the upper transmission portion 5, the transmission gear 18, the lower eccentric wheel 21, the partition plate 22, the upper eccentric wheel 20 and the backing plate 23 are connected through a pin shaft 24, pin holes 25 for the pin shaft 24 to penetrate through and shaft holes 27 for the rotating shaft 26 to penetrate through are formed in the transmission gear 18, the lower eccentric wheel 21, the partition plate 22, the upper eccentric wheel 20 and the backing plate 23, the rotating shaft 26 is used for fixedly mounting the transmission gear 18, the lower eccentric wheel 21, the partition plate 22, the upper eccentric wheel 20 and the backing plate 23, and the upper blade 1 and the lower blade 2 are in linkage and relative reciprocating motion under the transmission gear 18 and the eccentric assembly 19. Specifically, a motor gear 35 is sleeved on a motor output shaft 34 of the driving mechanism, the motor gear 35 is meshed with a reduction gear assembly 36, the reduction gear assembly 36 is connected with the transmission gear 18, the transmission gear 18 drives the eccentric assembly 19 to rotate through the pin shaft 24 when rotating, the eccentric assembly 19 drives the upper blade 1 and the lower blade 2 to move in a staggered reciprocating mode when rotating, the mechanism is simple, and transmission is efficient.

Preferably, the upper blade 1 and the lower blade 2 are both provided with a limiting hole 29, a limiting part 30 is arranged in the limiting hole 29, one end of the limiting part 30 is arranged in the limiting hole 29, and the other end of the limiting part is fixedly connected with the blade frame 3. Spacing hole 29 is provided with a plurality ofly along the even interval of the length direction of last blade 1 and bottom knife 2, connects more firmly, the direction of blade when reciprocating motion is accurate has been guaranteed in the setting of locating part 30 and spacing hole 29, avoids producing the displacement in the use, reduces cutting efficiency.

As shown in fig. 1-3, a hedge trimmer comprises a main body, a blade installation chamber 31 is arranged below the main body, a blade assembly for the hedge trimmer is installed in the blade installation chamber 31, a gear box cover 32 and a connecting end cover 33 are arranged outside the blade installation chamber 31, and the connecting end cover 33 is detachably arranged.

Preferably, at least one side of the upper blade 1 along the length direction and at least one side of the lower blade 2 along the length direction are both provided with a plurality of cutting teeth at intervals, and under the action of the transmission mechanism 4, the cutting teeth on the same side of the upper blade 1 and the lower blade 2 are mutually matched to realize cutting operation.

Referring to fig. 4 and 5 in particular, the utility model discloses a hedge trimmer body structure convenient to replace, a blade mounting chamber 31 is arranged below a hedge trimmer body, the blade assembly of the utility model is mounted in the blade mounting chamber 31, when a user needs to replace a double-edge blade or a single-edge blade with a tea-collecting baffle plate according to the use requirement, the user only needs to disassemble a connecting end cover 33 without disassembling a gear box cover 32, the operation is more convenient and labor-saving, the abrasion of parts of a transmission mechanism 4 and the falling of impurities such as dust and the like into the gear box caused by repeated disassembly and assembly are also avoided, and the service life of the utility model is prolonged.

Preferably, the transmission mechanism 4 is installed in the gear box cover 32, and the detachable portions of the upper blade 1 and the lower blade 2 are installed in the connecting end cover 33.

The blade installation chamber 31 includes two regions, the two regions are respectively sealed by a gear box cover 32 and a connecting end cover 33, the transmission mechanism 4 and the connecting ends of the upper transmission part 5 and the lower transmission part 7 arranged on the transmission mechanism 4 are all installed in the region below the gear box cover 32, and the connecting ends of the upper transmission part 5 and the upper cutting part 6, and the connecting ends of the lower transmission part 7 and the lower cutting part are all installed in the region below the connecting end cover 33. Therefore, when the blades are replaced, only the connecting end cover 33 needs to be opened, the detachable parts on the upper blade 1 and the lower blade 2 in the connecting end cover 33 are detached, namely the upper cutting part 6, the lower cutting part and the blade frame 3 fixedly connected with the upper cutting part 6 and the lower cutting part are detached and replaced, the blade assembly does not need to be replaced integrally, and the blade replacing device is simple, convenient and efficient.

Preferably, the multifunctional portable handheld electronic device further comprises a driving mechanism, the driving mechanism is connected with the transmission mechanism 4, a main holding handle 37 is arranged at the rear end of the body, a starting switch 38 and a safety switch 39 are arranged on the main holding handle 37, and an anti-skid handle 40 and a safety baffle 41 are arranged at the front end of the body.

Referring to fig. 1, the main handle 37 is arranged above the machine body to facilitate the operator to take up the machine body, and the start switch 38 and the safety switch 39 are both arranged on the main handle 37 to facilitate the single-hand operation; the anti-skid handle 40 which is arranged in an inclined mode is additionally arranged, so that the anti-skid handle accords with human engineering, the weight is shared by holding and lifting with two hands, and the operation is easier and more stable; the safety shield 41 prevents the rag from being scratched. When the starting switch is used, the starting switch 38 is pressed first, the machine is started, the safety switch 39 is a self-locking switch, the starting switch 38 is locked by pressing, the machine is prevented from being started due to mistaken touch, and the starting is safer.

Preferably, actuating mechanism's power supply is the lithium cell package, and is small and exquisite portable, easy dismounting, small, alleviates fuselage weight, and the operation is lighter, improves work efficiency.

Preferably, the machine body is provided with a plurality of radiating holes for radiating and ventilating.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a blade subassembly for hedge trimmer, includes upper blade (1), lower blade (2), blade frame (3) and drive mechanism (4), upper blade (1) and lower blade (2) stack set up in on the blade frame (3), the rear end of upper blade (1) and lower blade (2) with drive mechanism (4) are connected, its characterized in that: the upper blade (1) comprises an upper transmission part (5) and an upper cutting part (6), the upper transmission part (5) is detachably connected with the upper cutting part (6), and one end of the upper transmission part (5) is connected with the transmission mechanism (4); the lower blade (2) comprises a lower transmission part (7) and a lower cutting part (8), the lower transmission part (7) and the lower cutting part (8) are detachably connected, and one end of the lower transmission part (7) is connected with the transmission mechanism (4).

2. A blade assembly for a hedge trimmer according to claim 1, characterized in that: a connecting piece (9) is arranged between the upper transmission part (5) and the upper cutting part (6), and two ends of the connecting piece (9) are respectively connected with the upper transmission part (5) and the upper cutting part (6); a connecting piece (9) is also arranged between the lower transmission part (7) and the lower cutting part (8), and two ends of the connecting piece (9) are respectively connected with the lower transmission part (7) and the lower cutting part (8).

3. A blade assembly for a hedge trimmer according to claim 2, characterized in that: a first mounting hole (10) is formed in the upper transmission part (5), a second mounting hole (11) is formed in the upper cutting part (6), and two ends of the connecting piece (9) are respectively connected with the first mounting hole (10) and the second mounting hole (11); the lower transmission part (7) is provided with a third mounting hole (12), the lower cutting part (8) is provided with a fourth mounting hole (13), and two ends of the connecting piece (9) are respectively connected with the third mounting hole (12) and the fourth mounting hole (13).

4. A blade assembly for a hedge trimmer according to claim 3, characterized in that: the connecting piece (9) is a metal plate, connecting holes (14) are formed in two ends of the metal plate, and the connecting holes (14) are respectively connected with the first mounting hole (10), the second mounting hole (11), the third mounting hole (12) and the fourth mounting hole (13) through fixing screws (15).

5. A blade assembly for a hedge trimmer according to claim 3, characterized in that: the connecting ends of the upper transmission part (5) and the upper cutting part (6) are respectively provided with an upper connecting part (16), and the first mounting hole (10) and the second mounting hole (11) are respectively arranged on the upper connecting part (16); lower connecting portion (17) are all formed at the connecting end of lower transmission portion (7) and lower cutting portion (8), third mounting hole (12) and fourth mounting hole (13) are seted up respectively on lower connecting portion (17).

6. A blade assembly for a hedge trimmer according to claim 1, characterized in that: the transmission mechanism (4) comprises a transmission gear (18), an eccentric assembly (19) is arranged on the transmission gear (18), the eccentric assembly (19) comprises an upper eccentric wheel (20) and a lower eccentric wheel (21), a partition plate (22) is arranged between the upper eccentric wheel (20) and the lower eccentric wheel (21), and the transmission gear (18), the upper eccentric wheel (20), the partition plate (22) and the lower eccentric wheel (21) are connected through a pin shaft (24); waist-shaped transmission holes (28) are formed in the upper transmission part (5) and the lower transmission part (7), the transmission holes (28) are respectively connected with the upper eccentric wheel (20) and the lower eccentric wheel (21), and the upper blade (1) and the lower blade (2) relatively reciprocate under the linkage of the transmission gear (18) and the eccentric assembly (19).

7. A blade assembly for a hedge trimmer according to claim 1, characterized in that: go up blade (1) and all seted up spacing hole (29) on blade (2), be provided with locating part (30) in spacing hole (29), locating part (30) one end set up in spacing hole (29), the other end with blade frame (3) fixed connection.

8. A hedge trimmer comprising a main body, a blade mounting chamber (31) being provided below the main body, the blade mounting chamber (31) having a blade assembly for a hedge trimmer according to any one of claims 1 to 7 mounted therein, characterized in that: a gear box cover (32) and a connecting end cover (33) are arranged outside the blade mounting chamber (31), and the connecting end cover (33) is detachably arranged.

9. A hedge trimmer according to claim 8, characterized in that: install in gear case lid (32) drive mechanism (4), install in connecting end cover (33) go up the portion of dismantling on blade (1) and lower blade (2).

10. A hedge trimmer according to claim 8, characterized in that: still include actuating mechanism on the fuselage, actuating mechanism with drive mechanism (4) are connected, the rear end of fuselage is provided with owner and holds handle (37), is provided with starting switch (38) and safety switch (39) on owner holding handle (37), the front end of fuselage is provided with anti-skidding handle (40) and safety shield (41).