CN212464133U

CN212464133U - Electric hedge trimmer

Info

Publication number: CN212464133U
Application number: CN202020892798.6U
Authority: CN
Inventors: 潘正均
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-05-25
Filing date: 2020-05-25
Publication date: 2021-02-05
Anticipated expiration: 2030-05-25

Abstract

The utility model provides an electronic hedge trimmer belongs to garden equipment technical field. It has solved the current poor problem of hedge trimmer pruning effect. The electric hedge trimmer comprises a front tool rest, wherein the front tool rest is provided with a plurality of fixed blades which extend out from the left side edge, the right side edge and the front end of the front tool rest respectively, the rear end of the front tool rest is connected with a tail frame in an inserting mode, the tail frame is provided with a driving chain wheel driven by a power unit, the position of the front tool rest close to the front end is provided with a driven chain wheel, the driven chain wheel is in transmission connection with the driving chain wheel through a closed chain ring, the closed chain ring is uniformly provided with a plurality of movable blades which can form shearing action with the fixed blades, and the front tool rest/the tail frame is also provided with a tensioning structure for. The utility model has the advantages of convenient assembly, good trimming effect, long service life and the like.

Description

Electric hedge trimmer

Technical Field

The utility model belongs to the technical field of garden equipment, a electronic hedge trimmer is related to.

Background

At present, a cutter tooth pruning mechanism of a hedge trimmer does reciprocating linear motion, and the hedge trimmer is easy to damage branches when repeatedly acting on the branches during working. Therefore, the chinese patent discloses a trimming device for maintaining hedgerow [ No. CN207969406U ], which comprises a bracket, wherein a trimming knife plate composed of a guide plate, a chain and a blade is arranged on the bracket, when the trimming knife plate works, a motor drives a chain wheel to rotate, the chain wheel drives the chain to rotate, thereby driving the blade on the chain to rotate to trim the hedgerow. The chain does not move in a reciprocating mode, so that the blades are driven to cut the branches in a single direction, and the branches are not easily damaged.

According to the pruning device, the branches are pruned in a cutting mode, so that the branches can be toppled along the cutting direction of the blade under the cutting force of the blade during pruning, the smooth operation of cutting cannot be effectively guaranteed, and the pruning effect of the branches is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at having the above-mentioned problem to current technique, provided an electronic hedge trimmer that can cut the pruning to the branch.

The purpose of the utility model can be realized by the following technical proposal:

electric hedge trimmer, including the front knife rest, the front knife rest on be equipped with a plurality of fixed blades that stretch out by the left and right sides of front knife rest and front end respectively, the rear end of front knife rest is connected with the tailstock through the mode of pegging graft, the tailstock on be equipped with by power unit driven drive sprocket, the front knife rest be close to the position department of front end and be equipped with driven sprocket, driven sprocket be connected with the drive sprocket transmission through closed chain ring, closed chain ring on evenly distributed have a plurality of can form the moving blade of shearing action with the fixed blade, front knife rest/tailstock on also be used for tensioning closed chain ring's straining structure.

During installation, the front tool rest and the tail frame are firstly inserted, the distance between the driven chain wheel and the driving chain wheel is smaller than the distance between the driven chain wheel and the driving chain wheel when the closed chain ring is tensioned, the chain ring is respectively sleeved on the driving chain wheel and the driven chain wheel, and finally the chain wheel is tensioned through the tensioning structure. When the cutting machine works, the power unit is started, the power unit drives the driving chain wheel to rotate, the driving chain wheel drives the driven chain wheel to rotate through the closed chain ring, the movable blade and the fixed blade on the closed chain ring form a shearing action, and branches and leaves between the fixed blade and the movable blade are sheared. This electric hedge trimmer adopts the mode of shearing to prune branches and leaves, can not cause empting of branch during the pruning, can effectively improve pruning effect.

In foretell electric hedge trimmer, the preceding knife rest include backup pad one and with backup pad one parallel and relative backup pad two that sets up, driven sprocket be located backup pad one and backup pad two between, backup pad one and backup pad two between still be equipped with two support bars that are located left and right sides limit department respectively, backup pad one, backup pad two and two support bars enclose and become to insert the chamber, the tailstock on have and insert the portion of inserting that the chamber cooperation set up, the portion of inserting insert the chamber.

The length direction of the first support plate and the second support plate extends along the front-back direction, the width direction of the first support plate and the second support plate extends along the left-right direction, the length direction of the support bar extends along the front-back direction, and the length of the support bar is smaller than that of the first support plate/the second support plate. The section of the insertion cavity is rectangular, and in order to prevent the insertion part from rotating in the insertion cavity, the section of the insertion part is designed to be rectangular, and the insertion part cannot move relative to each other in the circumferential direction after being matched with each other.

In the electric hedge trimmer, the tensioning structure comprises a supporting block fixed in the insertion cavity and an adjusting piece arranged in the supporting block in a penetrating mode and in threaded fit with the supporting block, and the adjusting piece extends along the length direction of the insertion cavity.

During installation, the position of the adjusting piece is adjusted, the distance from the adjusting piece to the rear end of the tail frame is the largest, then the inserting portion of the tail frame is inserted into the inserting cavity from the rear end of the inserting cavity, the closed chain ring is installed on the driving chain wheel and the driven chain wheel and is not tensioned, then the adjusting piece is rotated, the adjusting piece is gradually abutted against the front end of the inserting portion, the tail frame is pushed to move backwards, the distance between the driving chain wheel and the driven chain wheel is increased, and the purpose of tensioning the closed chain ring is achieved. The insertion portion cannot be pulled out of the insertion cavity under the action of the closed chain ring. Wherein, the regulating part is a bolt.

In the electric hedge trimmer, the first support plate/the second support plate is provided with an adjusting port corresponding to the adjusting piece. Due to the fact that the adjusting port is arranged, the adjusting piece can be conveniently adjusted. Can be in adjusting joint installation apron, the accessible apron will be adjusted the joint and is lived after adjusting the regulation and finishing, prevents that branch and leaf piece from entering into and inserting the intracavity.

In foretell electric hedge trimmer, the support bar in be equipped with along its length direction and link up the guiding hole that sets up, the straight flange position of closing the chain ring is in the guiding hole, the lateral part of support bar has the groove of stepping down with the guiding hole intercommunication, the moving blade that is located on the straight flange portion by the groove of stepping down stretch out.

The closed chain ring has two straight edge portions and two arc edge portions, one of which is wound around the driving sprocket and the other of which is wound around the driven sprocket. The straight edge part of the closed chain ring can be accommodated through the arranged guide hole, so that the electric hedge trimmer can prevent branches and leaves from contacting the closed chain ring when in work, and the stability and the trimming effect are improved.

In the electric hedge trimmer, the fixed blade is fixed on the first support plate, and the abdicating groove is arranged close to the first support plate. When the movable blade extends out of the abdicating groove, the movable blade can better form shearing action with the fixed blade.

In the electric hedge trimmer, the tail frame comprises a third support plate and a fourth support plate which is arranged opposite to the third support plate, the driving sprocket is arranged between the third support plate and the fourth support plate, and the inserting part is positioned between the third support plate and the fourth support plate and is fixedly connected with the third support plate and the fourth support plate respectively.

The third supporting plate and the fourth supporting plate are fixedly connected relatively through the inserting part and the rotating shaft of the driving chain wheel, and the driving chain wheel is positioned at the rear end of the inserting part. The width of the tail frame is larger than that of the front knife frame, the width of the tail frame is the width of the third support plate or the fourth support plate, the width of the front knife frame is the maximum width of the outwards extending movable blades on two sides, when the movable blades move to a position between the third support plate and the fourth support plate along the closed chain ring, the third support plate and the fourth support plate can completely cover the movable blades, and the movable blades cannot cut operators when the tail frame is held.

In the electric hedge trimmer, the power unit is a right-angle motor.

Compared with the prior art, the electric hedge trimmer has the following advantages:

the branches are sheared through the interaction of the movable blade and the fixed blade, so that the branches cannot topple during pruning, and the pruning effect can be effectively improved; the structure design is reasonable, the tail frame can be quickly connected with the front tool rest in an inserting mode, the tightness of the closed chain ring can be adjusted through the arranged tensioning structure, the operation is convenient, and the adjusting effect is good; because set up the support bar, can protect the closed chain ring that is located the shearing position, prevent clastic entering, effectively improve life.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Fig. 2 is a cross-sectional view taken along line a-a of fig. 1 according to the present invention.

Fig. 3 is a schematic structural view of fig. 1 with the second supporting plate removed.

Fig. 4 is a schematic structural view of fig. 3 with the closing chain ring removed, according to the present invention.

Fig. 5 is an exploded schematic view of the front blade carrier and the tail carrier provided by the present invention.

Fig. 6 is a cross-sectional view taken along line B-B of fig. 5 according to the present invention.

In the figure, 11, stationary blade; 12. a driven sprocket; 13. a first support plate; 14. a second support plate; 15. a supporting strip; 16. an insertion cavity; 17. adjusting an interface; 18. a guide hole; 19. a yielding groove; 21. a power unit; 22. a drive sprocket; 23. an insertion portion; 24. a third support plate; 25. a support plate IV; 31. a closed chain loop; 32. a movable blade; 41. a support block; 42. an adjusting member.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

An electric hedge trimmer as shown in figure 1 comprises a front blade carrier and a tail carrier. As shown in fig. 2, the front tool rest includes a first support plate 13 and a second support plate 14 parallel to and opposite to the first support plate 13, two support bars 15 respectively located at left and right sides are further disposed between the first support plate 13 and the second support plate 14, and an insertion cavity 16 is defined by the first support plate 13, the second support plate 14 and the two support bars 15. As shown in fig. 1 and 3, a driven sprocket 12 is provided between the first support plate 13 and the second support plate 14, near the front end of the front blade carrier. As shown in fig. 5, the supporting plate 13 is provided with a plurality of fixed blades 11 respectively extending from left and right sides and a front end of the supporting plate 13.

The length directions of the first support plate 13 and the second support plate 14 extend along the front-back direction, the width directions of the first support plate 13 and the second support plate 14 extend along the left-right direction, the length directions of the support bars 15 extend along the front-back direction, and the length of the support bars 15 is smaller than that of the first support plate 13/the second support plate 14. The cross section of the insertion cavity 16 is rectangular, and in order to prevent the insertion portion 23 from rotating in the insertion cavity 16, the cross section of the insertion portion 23 is designed to be rectangular, and the two portions cannot move relative to each other in the circumferential direction after being matched with each other.

As shown in fig. 1 and 4, the tailstock includes a support plate three 24 and a support plate four 25 disposed opposite to the support plate three 24, a driving sprocket 22 driven by a right-angle motor and an insertion portion 23 disposed to be engaged with the insertion cavity 16 are disposed between the support plate three 24 and the support plate four 25, and the insertion portion 23 is inserted into the insertion cavity 16. As shown in fig. 3, the driven sprocket 12 is in transmission connection with the driving sprocket 22 through a closed chain ring 31, and a plurality of movable blades 32 capable of forming shearing action with the fixed blades 11 are uniformly distributed on the closed chain ring 31.

The closed link 31 has two straight side portions and two curved side portions, one of which is wound around the drive sprocket 22 and the other of which is wound around the driven sprocket 12. The third support plate 24 and the fourth support plate 25 are fixedly connected with each other through the insertion portion 23 and the rotating shaft of the driving sprocket 22, and the driving sprocket 22 is located at the rear end of the insertion portion 23. The width of the tail frame is larger than that of the front knife frame, the width of the tail frame is the width of the supporting plate III 24 or the supporting plate IV 25, the width of the front knife frame is the maximum width of the movable blade 32 extending outwards on two sides, when the movable blade 32 moves to a position between the supporting plate III 24 and the supporting plate IV 25 along the closed chain ring 31, the supporting plate III 24 and the supporting plate IV 25 can completely cover the movable blade 32, and the movable blade 32 cannot cut an operator when the tail frame is held.

As shown in fig. 3-6, a tensioning structure is secured within insertion cavity 16. Specifically, the tensioning structure includes a supporting block 41 fixed in the insertion cavity 16 and an adjusting member 42 disposed in the supporting block 41 in a penetrating manner and in threaded fit with the supporting block 41, and the adjusting member 42 extends along the length direction of the insertion cavity 16. Wherein the adjusting member 42 is a bolt. During installation, the position of the adjusting piece 42 is adjusted to enable the distance from the adjusting piece 42 to the rear end of the tailstock to be maximum, then the inserting portion 23 of the tailstock is inserted into the inserting cavity 16 from the rear end of the inserting cavity 16, the closed chain ring 31 is installed on the driving chain wheel 22 and the driven chain wheel 12, the closed chain ring 31 is not tensioned, then the adjusting piece 42 is rotated to enable the adjusting piece 42 to gradually abut against the front end of the inserting portion 23, the tailstock is pushed to move backwards, and therefore the distance between the driving chain wheel 22 and the driven chain wheel 12 is increased, and the purpose of tensioning the closed chain ring 31 is achieved. The insertion portion 23 cannot be removed from the insertion cavity 16 by the closing ring 31.

As shown in fig. 1, in order to adjust the adjusting member 42, an adjusting port 17 is provided on the second support plate 14. A cover plate can be arranged at the position of the adjusting interface 17, and the adjusting interface 17 can be covered by the cover plate after the adjusting piece 42 is adjusted, so that branch and leaf debris can be prevented from entering the inserting cavity 16.

As shown in fig. 2 and 6, the supporting strip 15 is formed by bending the rear end of the stationary blade 11. Specifically, as shown in fig. 6, the support bar 15 is internally provided with a guide hole 18 which is arranged in a penetrating manner along the length direction of the support bar, the straight edge part of the closed chain ring 31 is positioned in the guide hole 18, the side part of the support bar 15 is provided with a abdicating groove 19 which is communicated with the guide hole 18, the abdicating groove 19 is arranged close to the first support plate 13, and the movable blade 32 positioned on the straight edge part extends out of the abdicating groove 19. The guide holes 18 can be used for accommodating straight edge parts of the closing chain ring 31, so that the electric hedge trimmer can prevent branches and leaves from contacting the closing chain ring 31 when in work, and the stability and the trimming effect are improved.

When the electric hedge trimmer works, the right-angle motor is started, the power unit 21 drives the driving sprocket 22 to rotate, the driving sprocket 22 drives the driven sprocket 12 to rotate through the closed chain ring 31, the movable blade 32 on the closed chain ring 31 and the fixed blade 11 form a shearing action, and branches and leaves between the fixed blade 11 and the movable blade 32 are sheared. Because the branch can not be toppled over, the pruning effect can be effectively improved.

When the electric hedge trimmer is used, the tail frame can be held by hands or a handle which is convenient to hold by hands is arranged on the tail frame, and a worker can hold the electric hedge trimmer by hands to trim hedges. A connecting seat can be arranged on the tail frame and is connected with a swing arm of the vehicle through the connecting seat.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides an electric hedge trimmer, includes the front knife rest, the front knife rest on be equipped with a plurality of fixed blades (11) that stretch out by the left and right sides of front knife rest and front end respectively, its characterized in that, the rear end of front knife rest is connected with the tailstock through the mode of pegging graft, the tailstock on be equipped with drive sprocket (22) by power unit (21) drive, the front knife rest be close to the position department of front end and be equipped with driven sprocket (12), driven sprocket (12) be connected with drive sprocket (22) transmission through closed chain ring (31), closed chain ring (31) on evenly distributed have a plurality of can form movable blade (32) of shearing action with fixed blade (11), front knife rest/tailstock on also have the tension structure who is used for tensioning closed chain ring (31).

2. An electric hedge trimmer according to claim 1, characterized in that the front blade carrier comprises a first support plate (13) and a second support plate (14) parallel to and opposite to the first support plate (13), the driven sprocket (12) is located between the first support plate (13) and the second support plate (14), two support bars (15) are respectively located at the left and right sides between the first support plate (13) and the second support plate (14), the first support plate (13), the second support plate (14) and the two support bars (15) enclose an insertion cavity (16), the rear blade carrier is provided with an insertion portion (23) matched with the insertion cavity (16), and the insertion portion (23) is inserted into the insertion cavity (16).

3. An electric hedge trimmer according to claim 2 wherein the tensioning arrangement comprises a support block (41) secured within the insertion chamber (16) and an adjustment member (42) extending through the support block (41) and threadedly engaged with the support block (41), the adjustment member (42) extending along the length of the insertion chamber (16).

4. An electric hedge trimmer according to claim 3 characterized in that the first support plate (13)/the second support plate (14) is provided with an adjusting port (17) corresponding to the adjusting member (42).

5. An electric hedge trimmer according to claim 2, 3 or 4 characterized in that the support bar (15) is provided with a guide hole (18) running through along its length direction, the straight edge of the closing link (31) is located in the guide hole (18), the side of the support bar (15) is provided with a recess (19) communicating with the guide hole (18), and the moving blade (32) located on the straight edge is extended from the recess (19).

6. An electric hedge trimmer according to claim 5 wherein the stationary blade (11) is fixed to the first support plate (13) and the relief groove (19) is located adjacent the first support plate (13).

7. An electric hedge trimmer according to claim 2, 3 or 4 wherein the tail stock comprises a third support plate (24) and a fourth support plate (25) arranged opposite to the third support plate (24), the drive sprocket (22) being arranged between the third support plate (24) and the fourth support plate (25), the insert (23) being arranged between the third support plate (24) and the fourth support plate (25) and being fixedly connected to the third support plate (24) and the fourth support plate (25), respectively.

8. An electric hedge trimmer according to claim 1 or 2 or 3 or 4, characterized in that the power unit (21) is a right-angle motor.