Backpack electric connecting rod seat structure and backpack mower

Abstract

The backpack electric connecting rod seat structure comprises a seat body, a connecting pipe used for connecting an operation pipe and a flexible shaft outer pipe is arranged on the seat body, an electric starting switch and a battery installation part are arranged on the seat body, and the battery installation part is used for detachably installing a battery pack. The battery pack is separated from the engine assembly of the lawn mower, the battery pack is not prone to being damaged due to vibration of the engine assembly, gasoline in an oil pot of the engine assembly cannot be ignited due to the fact that the battery pack is on fire, potential safety hazards are reduced, the electric starting switch is arranged on the electric connecting rod seat in front, and the electric starting switch is convenient to use. An operator can operate the mower to perform one-key flameout starting by hands at any time when carrying the back frame of the mower, the mower does not need to be started after the back frame is put down, and control is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mower, especially to a back-carrying electric connecting rod seat structure and back-carrying mower. BACKGROUND

[0002] The mower is also called a weeding machine, a grass cutting machine, a lawn trimmer and the like, and is a mechanical tool for trimming lawns, vegetation and the like, and is generally divided into a hand-pushed mower, a side-hung mower and a back-carrying mower. The back-carrying mower generally includes a back frame, a power unit provided on the back frame, a control lever internally provided with a mandrel, a flexible shaft for transmitting power of the power unit to the mandrel, and a mower head connected to an end of the control lever. The power unit includes an engine. The existing back-carrying mower is generally started by a hand starting mode, and the operation is relatively troublesome. The rope starting mode has certain requirements on the stretching force, stretching distance and stretching skill of the user.

[0003] To solve the above problems, the market has appeared a mode of adding an electric starting mode to the hand starting mode to start the machine, which is convenient for users to use. For example, a back-carrying mower disclosed in Chinese utility model patent CN212211963U includes a machine shell, a cutting tool, a back frame connected to the machine shell and connected with two shoulder straps, a power assembly provided in the machine shell and including an engine, the engine being in transmission connection with the cutting tool for driving the cutting tool to rotate, a starting device including an electric starting assembly, a hand starting assembly and a starter assembly, the starter assembly being in rotational connection with the engine for starting the engine, the electric starting assembly including a motor, a power source, a fuse and a starting switch, the motor being in transmission connection with the starter assembly, the power source being in electrical connection with the motor and being used for power supply, the fuse being in electrical connection with the power source, the starting switch being in electrical connection with the power source and being used for controlling the motor, and the power source and the starting switch being arranged on the power assembly.

[0004] The battery and the starting switch are arranged on the engine assembly. When the engine starts to work, the engine assembly will have relatively large vibration, and the vibration transmitted to the battery can easily cause damage to the battery, and even cause fire. The engine is provided with a gasoline container, and the gasoline in the container can be ignited when the battery catches fire, which has relatively large safety problems. The starting switch is arranged on the engine assembly. When the machine is off (or the user needs to turn off the machine for short distance movement) during operation, the operator needs to put down the back-carrying machine first, start the machine through the starting switch, and then carry the machine on the body again to work, which is relatively troublesome and cannot achieve the effect of turning off and starting at any time during work. UTILITY MODEL CONTENTS

[0005] The battery pack is arranged on the engine assembly and is easy to be damaged due to vibration, even catching fire, the battery pack catching fire can ignite gasoline in the engine oil can, and there is a big safety problem, and in the operation process, if the machine is off (or the user needs to turn off the machine for short distance movement), when the operator needs to use the machine again, the operator needs to first put down the carried machine, starts the machine through the starting switch, and then carries the machine on the body to carry out the operation, and the operation is more troublesome, the utility model provides a carrying electric contact rod seat structure and a carrying type mower provided with the structure.

[0006] The utility model discloses a carrying electric contact rod seat structure and a carrying type mower provided with the structure.

[0007] The utility model discloses further preferred technical scheme is: battery installation department includes setting on the seat body for the battery pack sliding insertion's plug -in slot, and the both sides of plug -in slot are equipped with with battery pack sliding cooperation's guide boss, be equipped with with the first electrode sheet of the battery pack electric connection in plug -in slot.

[0008] The utility model discloses further preferred technical scheme is: the seat body includes upper shell and installs bottom cover of upper shell, and bottom cover combines with upper shell and forms the accommodation cavity and plug -in slot of accommodating electronic components between both, and the trigger part of electric starting switch is exposed outside the seat body.

[0009] The utility model discloses further preferred technical scheme is: the trigger part of electric starting switch exposes from the side wall of seat body, and the side of seat body away from the trigger part of electric starting switch is equipped with with the through -line hole of accommodation cavity intercommunication, and the through -line hole is used for the wire of electronic components in accommodation cavity on connection and is connected, and the connecting pipe is fixed on the upper surface of upper shell, and is integrally formed with upper shell, and the upper surface of upper shell is equipped with the wire slot of one side in connecting pipe, and wire slot is used for guiding the wire of the wire from the through -line hole and is connected, and wire slot is located in the width range of plug -in slot.

[0010] The utility model discloses further preferred technical scheme is: the side of seat body away from the trigger part of electric starting switch is equipped with the notch, and the through -line hole is located in the notch, and one end of wire slot is connected with the notch.

[0011] The further preferred technical scheme of the utility model is: the trigger part of the electric starting switch exposed outside the seat body is perpendicular to the length extension direction of the connecting pipe.

[0012] The further preferred technical scheme of the utility model is: the trigger part of the electric starting switch exposed outside the seat body is perpendicular to the length extension direction of the connecting pipe.

[0013] The further preferred technical scheme of the utility model is: the insertion direction of the battery pack is parallel to the length extension direction of the connecting pipe.

[0014] The further preferred technical scheme of the utility model is: one end of the connecting pipe is provided with a slot, both sides of the slot are provided with fastening seats for fastening, the fastening seat on one side is provided with a through hole for the bolt to pass through, the fastening seat on the other side is provided with a threaded hole for the bolt to threadedly connect, the size of the inner hole of the connecting pipe is changed by rotating the bolt, a positioning hole is formed on the connecting pipe close to the fastening seat and is in communication with the inner hole of the connecting pipe, the positioning hole is used for the screw to insert and position and fasten the operation pipe inserted into the connecting pipe, the other end of the connecting pipe is provided with a limiting hole for the locking pin to insert, the locking pin is threadedly connected with the nut by passing through the limiting hole, the locking pin passing through the limiting hole partially protrudes from the inner wall of the connecting pipe and is used for limiting cooperation with the inserted outer tube of the flexible shaft.

[0015] Another subject: the backpack type mower comprises a back frame, a motor assembly, a flexible shaft outer tube, an operation pipe, a cutting head and a backpack electric connecting rod seat structure, the motor assembly is mounted on the back frame, one end of the flexible shaft outer tube is connected with the motor assembly, the other end of the flexible shaft outer tube is connected with the connecting pipe, one end of the operation pipe is connected with the connecting pipe, the cutting head is connected to the other end of the operation pipe, the flexible shaft is arranged in the flexible shaft outer tube, the rigid transmission shaft is arranged in the operation pipe, one end of the flexible shaft is connected with the output end of the motor assembly, the other end of the flexible shaft is connected with the rigid transmission shaft, and the rigid transmission shaft is in transmission connection with the cutting head.

[0016] Compared with the prior art, the utility model discloses the advantage that the connecting pipe for connecting the operating pipe and the soft axle outer pipe is arranged on the seat body, the electric starting switch and the battery mounting portion are arranged on the seat body, the battery mounting portion is used for the detachable mounting of the battery pack, the electric starting switch is used for controlling the starting of the engine assembly of the mower, the battery pack is packed on the battery mounting portion to supply power for the electric starting, the electric connecting rod seat is used as the intermediate connecting position of the connecting operating pipe and the soft axle outer pipe, the battery mounting portion and the electric starting switch are arranged on the electric connecting rod seat, the battery pack is separated from the engine assembly of the mower, the battery pack is not easily damaged due to the vibration of the engine assembly, the gasoline in the oil can of the engine assembly is not ignited due to the fire of the battery pack, the security risk is reduced, and the electric starting switch is arranged on the electric connecting rod seat, so that the operator can operate the one-key fire extinguishing starting of the mower at any time when carrying the back frame of the mower, and the back frame does not need to be put down to start the mower, and the operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] The utility model will be described in further detail below in combination with the drawings and preferred embodiments, but the person skilled in the art will appreciate that these drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the utility model. In addition, unless specifically indicated, the drawings only schematically show the composition or structure of the described objects and can contain exaggerated display, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 It is the connecting rod seat structure schematic Figure 1 ;

[0019] Figure 2 It is the connecting rod seat structure schematic Figure 2 ;

[0020] Figure 3 It is the connecting rod seat structure schematic Figure 3 ;

[0021] Figure 4 It is the connecting rod seat cut schematic Figure 1 ;

[0022] Figure 5 It is the connecting rod seat cut schematic Figure 2 ;

[0023] Figure 6 It is the connecting rod seat cut schematic Figure 3 ;

[0024] Figure 7 It is the bottom cover and upper shell split schematic view;

[0025] Figure 8 It is the bottom cover structure schematic;

[0026] Figure 9Structure diagram of the upper shell and the connecting pipe;

[0027] Figure 10 Structure diagram of the electrode seat;

[0028] Figure 11 Structure diagram of the electric starting switch.

[0029] In the figure: 1, seat body; 2, connecting pipe; 3, notch; 4, wire passing hole; 5, wire groove; 6, slotted; 7, fastening seat; 8, bolt; 9, protruding column; 10, positioning hole; 11, locking pin; 12, electric starting switch; 13, direction; 14, insertion slot; 15, insertion direction; 16, exposed outlet; 17, guide protruding rib; 18, first electrode sheet; 19, electrode seat; 20, limiting hole; 21, nut; 22, fixing groove; 23, inner ring edge; 24, upper shell; 25, bottom cover; 26, accommodating cavity; 27, limiting cavity; 28, limiting flange; 29, cover body; 30, positioning protruding rib; 31, extension plate; 32, lower embedding groove; 33, insertion block; 34, positioning clamping groove; 35, upper embedding groove; 36, abutting boss; 37, insertion slot; 38, second electrode sheet; 39, shell; 40, first limiting section; 41, button part; 42, clamping part; 43, threaded hole; 44, perforation; 45, connecting protruding block. DETAILED DESCRIPTION

[0030] Preferred embodiments of the present application will be described in detail below with reference to the attached drawings. Those skilled in the art will appreciate that the description is merely descriptive, exemplary, and should not be interpreted as limiting the scope of protection of the present application.

[0031] It should be noted that similar reference numerals refer to similar items in the following drawings, and therefore, once an item is defined in one drawing, it can not be further defined and explained in subsequent drawings.

[0032] The backpack-type mower comprises a back frame, an engine assembly, a flexible shaft outer tube, an operating tube, a cutting head, a connecting rod seat and an electric starting assembly, the engine assembly is mounted on the back frame, one end of the flexible shaft outer tube is connected with the engine assembly, the other end of the flexible shaft outer tube is connected with the connecting pipe 2, one end of the operating tube is connected with the connecting pipe 2, the cutting head is connected to the other end of the operating tube, the flexible shaft outer tube is provided with a flexible shaft, the operating tube is provided with a rigid transmission shaft, one end of the flexible shaft is connected with an output end of the engine assembly, the other end of the flexible shaft is connected with the rigid transmission shaft, the rigid transmission shaft is in transmission connection with the cutting head, when the engine assembly is started, power is transmitted to the flexible shaft through the output end, the flexible shaft drives the rigid transmission shaft in the operating tube to rotate, and then the power is transmitted to the cutting head through the rigid transmission shaft, so that the cutting head cuts, and an operator holds the operating rod to control the cutting head to cut.

[0033] The soft shaft outer tube comprises a hose and a metal joint fixed at the end of the hose, and the metal joint is connected and fixed with the connecting rod base.

[0034] The above structure is the same as the back-carrying mower in the art, and the difference is only the structure of the connecting rod base, and the specific content is as follows:

[0035] Figures 1-11 As shown, the electric connecting rod base comprises a base body 1, and a connecting pipe 2 for connecting the operating pipe and the soft shaft outer tube is arranged on the base body 1.

[0036] Figure 1 、 Figure 5 As shown, one end of the connecting pipe 2 is provided with a slot 6, and fastening seats 7 for fastening are arranged on both sides of the slot 6. The fastening seat 7 on one side is provided with a through hole 44 for the bolt 8 to pass through, and the fastening seat 7 on the other side is provided with a threaded hole 43 for the bolt 8 to threadedly connect, the threaded hole 43 is opposite to the through hole 44, the bolt 8 is threadedly connected through the through hole 44 and the threaded hole 43, the size of the inner hole of the connecting pipe 2 is changed by rotating the bolt 8, and a positioning hole 10 in communication with the inner hole of the connecting pipe 2 is arranged at a position close to the fastening seat 7 on the connecting pipe 2, and the positioning hole 10 is used for inserting a screw to position and fasten the operating pipe inserted into the connecting pipe 2. Preferably, an internal thread is arranged in the positioning hole 10 for threadedly connecting with the screw.

[0037] When connecting and fixing one end of the operating pipe with the connecting pipe 2, one end of the operating pipe is inserted from one end of the connecting pipe 2, and then the screw is screwed along the positioning hole 10, so that the screw is inserted into the positioning slot hole on the operating pipe to limit the axial position of the operating pipe, so that the operating pipe cannot move axially relative to the connecting pipe 2, and then the bolt 8 is rotated to make the fastening seats 7 on both sides close to each other, so as to reduce the width of the slot 6, so that the inner hole of the connecting pipe 2 becomes smaller, and the inner wall of the connecting pipe 2 tightly holds the operating pipe, so as to fix and connect the operating pipe and the connecting pipe 2 together.

[0038] An inner ring edge 23 is arranged in the connecting pipe 2, and the inner ring edge 23 is used for abutting when one end of the operating pipe is inserted, so as to facilitate the positioning hole 10 to be opposite to the positioning slot hole on the operating pipe, and also can prevent the problem that the operating pipe is inserted too deep or too shallow.

[0039] A convex column 9 extending outward is arranged on the connecting pipe 2, and the positioning hole 10 is arranged on the convex column 9.

[0040] Figure 2 、 Figure 4 As shown, the other end of the connecting pipe 2 is provided with a limiting hole 20 for inserting a locking pin 11, and the locking pin 11 is threadedly connected with a nut 21 through the limiting hole 20. The locking pin 11 passing through the limiting hole 20 partially protrudes from the inner wall of the connecting pipe 2 and is used for limiting cooperation with the inserted soft shaft outer tube. Specifically, the above-mentioned metal joint is provided with an annular locking groove for limiting cooperation with the locking pin 11.

[0041] When connecting and fixing one end of the soft shaft outer tube with the connecting tube 2, the metal joint is inserted into the connecting tube 2, and then the locking pin 11 is threaded through the limiting hole 20 and connected with the nut 21, at this time, the part of the locking pin 11 protruding from the inner wall of the connecting tube 2 is clamped into the annular locking groove on the metal joint, thereby realizing the positioning and fastening of the metal joint.

[0042] The inserted metal joint abuts against the other side of the above-mentioned inner ring edge 23, facilitating the clamping of the locking pin 11 into the annular locking groove on the metal joint when inserted, and preventing the problem of over-deep or over-shallow insertion of the metal joint.

[0043] The structure of the above-mentioned electric starting assembly driving the starting of the engine assembly is the same as that of the existing lawn mower, and can refer to the electric starting assembly in the patent CN212211963U, except that the installation positions of the electric starting switch 12 and the battery pack are different.

[0044] Figure 2 、 Figure 3 As shown in the figure, the electric starting assembly includes a battery pack and an electric starting switch 12 arranged on the seat body 1, and the seat body 1 is provided with a battery mounting portion for detachable mounting of the battery pack.

[0045] The patent separates the battery pack from the engine assembly of the lawn mower, so that the battery pack is not easily damaged by the vibration of the engine assembly, and the battery pack is also not likely to ignite the gasoline in the oil can of the engine assembly due to fire, thereby reducing the safety hazard, and the electric starting switch 12 is arranged in front of the electric contact rod seat, so that the operator can operate the one-key fire extinguishing starting of the lawn mower at any time when carrying the back frame of the lawn mower, without the need to put down the back frame to start the lawn mower, and the operation is more convenient.

[0046] The battery mounting portion includes a plug-in slot 14 arranged on the seat body 1 for sliding insertion of the battery pack, the plug-in slot 14 is provided with guide protrusions 17 on both sides for sliding cooperation with the battery pack, and the plug-in slot 14 is provided with a first electrode sheet 18 for electrical connection with the inserted battery pack. The plug-in slot 14 is also provided with a clamping portion 42 for buckling cooperation with the lock catch on the battery pack, which can be a clamping groove or a clamping plate, and the clamping portion 42 is used to limit the sliding disengagement of the inserted battery pack, so that the battery pack is fixed on the plug-in slot 14.

[0047] Figure 7 As shown in the figure, the seat body 1 includes an upper shell 24 and a bottom cover 25 arranged at the bottom of the upper shell 24, the bottom cover 25 is combined with the upper shell 24 and forms a containing cavity 26 containing electronic components and the plug-in slot 14 therebetween, and the electric starting switch 12 is arranged in the containing cavity 26, and the trigger part of the electric starting switch 12 is exposed outside the seat body 1, which is used for the operator to trigger with hands to start the engine assembly.

[0048] Figure 8As shown, the bottom cover 25 comprises a cover body 29, one side of the cover body 29 is provided with two extension plates 31 extending transversely, when the bottom cover 25 is covered on the bottom of the upper shell 24, one side of the cover body 29 and the two extension plates 31 are combined with the bottom of the upper shell 24 to form the above-mentioned plug-in slot 14, the inner side of the two extension plates 31 protrudes from the slot wall of the plug-in slot 14 to form the above-mentioned guide protrusion 17.

[0049] Figure 9 As shown, the bottom of the upper shell 24 is provided with an abutting boss 36 corresponding to the two extension plates 31, at least one extension plate 31 is provided with a plug-in block 33 at the end away from the cover body 29, the abutting surface of the abutting boss 36 is provided with a plug-in slot 37 for the plug-in block 33 to be inserted, during installation, the two extension plates 31 are abutted on the abutting surfaces of the two abutting bosses 36, the plug-in block 33 is inserted into the plug-in slot 37 to position one end of the bottom cover 25, then the other end of the bottom cover 25 is pressed on the bottom of the upper shell 24, so that the bottom cover 25 is combined on the bottom of the upper shell 24, and then the bottom cover 25 and the upper shell 24 are fixedly connected together through screws.

[0050] In addition, the combined surface of the side wall of the bottom cover 25 is provided with a protruding positioning protrusion 30, the combined surface of the side wall of the upper shell 24 is provided with a positioning clamping groove 34 corresponding to the positioning protrusion 30, when the upper shell 24 is combined with the bottom cover 25, the positioning protrusion 30 is clamped into the positioning clamping groove 34 to position the bottom cover 25 and the upper shell 24, so as to limit the movement therebetween, facilitating the installation of the bottom cover 25.

[0051] Preferably, the electric start switch 12 is a button switch, the button part 41 of the button switch serves as a trigger part for hand pressing and triggering, the first electrode sheet 18 is connected to the electrode seat 19, the electrode seat 19 is provided with a second electrode sheet 38, the second electrode sheet 38 is electrically connected with the first electrode sheet 18 and the electric start switch 12, and the electric start switch 12 and the electrode seat 19 are clamped and fixed by the upper shell 24 and the bottom cover 25, so that the electric start switch 12 and the electrode seat 19 are easier to install without the need for other components to fix and install them, and the cost is also correspondingly reduced.

[0052] Figure 10 As shown, preferably, the two sides of the electrode seat 19 are provided with connecting lugs 45, the two extension plates 31 are provided with lower embedding grooves 32 corresponding to the two connecting lugs 45, and the upper shell 24 is provided with upper embedding grooves 35 corresponding to the lower embedding grooves 32, during installation, the connecting lugs 45 on the two sides of the electrode seat 19 are clamped into the lower embedding grooves 32 on the two sides, then the bottom cover 25 is combined with the upper shell 24, so that the parts of the connecting lugs 45 protruding from the lower embedding grooves 32 are clamped into the upper embedding grooves 35, and then when the bottom cover 25 and the upper shell 24 are fixedly connected through screws, the bottom cover 25 and the upper shell 24 clamp and fix the electrode seat 19 therebetween.

[0053] Figure 11As shown, preferably, the electric starting switch 12 comprises a shell 39 and a button part 41 protruding from one end of the shell 39, and a limiting flange 28 is arranged at the end of the shell 39 close to the button part 41. When the bottom cover 25 is combined with the upper shell 24, a limiting cavity 27 is formed for the limiting flange 28 to be clamped into, and the bottom cover 25 and the upper shell 24 are fixed by clamping the limiting flange 28. In addition, a first limiting section 40 can be arranged on the side wall of the shell 39, and a clamping part that is clamped with the first limiting section 40 is arranged on the upper shell 24 and / or the bottom cover 25. The clamping part is clamped with the first limiting section 40 to limit the relative rotation of the electric starting switch 12 with respect to the seat body 1.

[0054] Figure 1 、 Figure 2 As shown, the trigger part of the electric starting switch 12 is exposed from the left side wall of the seat body 1, and a revealing opening 16 is arranged on the left side wall of the seat body 1 for the trigger part of the electric starting switch 12 to be exposed. The revealing opening 16 is formed by combining the upper shell 24 and the bottom cover 25. The trigger part of the electric starting switch 12 is arranged on the side of the seat body 1, which is convenient for the hand to press the trigger part to start the switch. When pressing, it is more convenient and conforms to the ergonomics.

[0055] Preferably, the direction 13 of the trigger part of the electric starting switch 12 exposed outside the seat body 1 is perpendicular to the length extension direction of the connecting pipe 2, and the pressing direction of the button part 41 is also perpendicular to the length extension direction of the connecting pipe 2.

[0056] Figure 1 As shown, the side of the seat body 1 away from the trigger part of the electric starting switch 12 is provided with a wire passing hole 4 that is in communication with the accommodating cavity 26. The wire passing hole 4 is used for the wires connected to the electronic components in the accommodating cavity 26 to be connected out. After the wires are connected out from the wire passing hole 4, they are connected to other parts of the electric starting assembly arranged on the engine assembly. The connecting pipe 2 is fixed to the upper surface of the upper shell 24 and is integrally formed with the upper shell 24. The upper surface of the upper shell 24 is provided with a wire groove 5 located on one side of the connecting pipe 2. The wires extending out of the wire passing hole 4 are bent backward and clamped into the wire groove 5 for positioning. The wire groove 5 is located within the width range of the plug-in slot 14.

[0057] The positioning and guiding of the wire groove 5 make the layout of the wires more stable, prevent the wires from swinging left and right unstably during use, and avoid the risk of being repeatedly bent and broken. In addition, the connecting pipe 2 is integrally formed with the upper shell 24, and the wire groove 5 is arranged on the upper surface of the upper shell 24 on one side of the connecting pipe 2 and is located within the width range of the plug-in slot 14. Therefore, the upper shell 24 does not need to be additionally provided with other parts to open the wire groove 5, the transverse volume of the upper shell 24 is reduced, the structure is more compact, and the cost is saved.

[0058] The side of the seat body 1 away from the trigger position of the electric starting switch 12 is provided with a notch 3, a wire hole 4 is arranged in the notch 3, and one end of a wire groove 5 is communicated with the notch 3. By arranging the notch 3, the bending part of the wire is arranged in the notch 3, the notch 3 can protect the bending part of the wire, the bending part of the wire is not easy to collide with external objects, and the wire is arranged more on the inner side of the shell 24, so that the structure is more compact.

[0059] Figure 2 As shown, preferably, the insertion direction 15 of the battery pack is parallel to the length extension direction of the connecting pipe 2, the insertion slot 14 is arranged above and below the connecting pipe 2, the structure is more compact, and the transverse width of the seat body 1 is reduced.

[0060] The bottom of the upper shell 24 is provided with a fixing groove 22 for accommodating the nut 21, the fixing groove 22 is communicated with the lower end of the limiting hole 20, and the nut 21 is accommodated in the fixing groove 22.

[0061] The structure of the back-carrying electric contact rod seat and the back-carrying mower provided by the utility model are introduced above, the principle and implementation mode of the utility model are described by applying specific examples in the text, and the above embodiment is only used for helping to understand the utility model and the core idea. It should be pointed out that, for ordinary skilled persons in the technical field, the utility model can be improved and modified in many ways without departing from the principle of the utility model, and these improvements and modifications also fall within the protection scope of the utility model claim.

Claims

1. A back-carrying electrical contact pole base structure comprising a base body, a connecting pipe for connecting an operating pipe and a flexible shaft outer pipe being arranged on the base body, characterized in that, The seat body is provided with an electric starting switch and a battery mounting portion for detachably mounting a battery pack.

2. The back carry contact pole seat structure of claim 1, wherein, The battery mounting portion comprises a plug-in groove provided on the seat body for sliding insertion of the battery pack, and guide ribs provided on both sides of the plug-in groove for sliding cooperation with the battery pack.

3. The counterpoised electrical contact stem mount structure of claim 2, wherein, The seat body comprises an upper shell and a bottom cover mounted on the bottom of the upper shell, the bottom cover is combined with the upper shell and a receiving cavity for receiving electronic components and a plug-in groove are formed between the bottom cover and the upper shell, the electric starting switch is mounted in the receiving cavity, and a triggering part of the electric starting switch is exposed outside the seat body.

4. The counterpoise according to claim 3, wherein The triggering part of the electric starting switch is exposed from the side wall of the seat body, and the side of the seat body away from the triggering part of the electric starting switch is provided with a wire passing hole in communication with the receiving cavity, the wire passing hole is used for connecting the wires connected to the electronic components in the receiving cavity, a connecting pipe is fixed to the upper surface of the upper shell and is integrally formed with the upper shell, and the upper surface of the upper shell is provided with a wire groove on one side of the connecting pipe, the wire groove is used for guiding the wires connected from the wire passing hole, and the wire groove is located within the width range of the plug-in groove.

5. The counterpoise according to claim 4, wherein, The side of the seat body away from the triggering part of the electric starting switch is provided with a notch, the wire passing hole is arranged in the notch, and one end of the wire groove is in communication with the notch.

6. The counterpoise according to claim 3, wherein, The electric starting switch is a button switch, the button part of the button switch is used as the triggering part for pressing triggering, the first electrode sheet is connected to an electrode seat, the electrode seat is provided with a second electrode sheet, the second electrode sheet is electrically connected with the first electrode sheet and the electric starting switch, the electric starting switch and the electrode seat are clamped and fixed by the upper shell and the bottom cover, and the upper shell and the bottom cover are fixed and connected by screws after being spliced.

7. A back carry contact pole seat structure according to claim 3 or 4 or 6, wherein The direction of the triggering part of the electric starting switch exposed outside the seat body is perpendicular to the length extension direction of the connecting pipe.

8. A back carry contact pole seat structure according to claim 2 or 3, wherein The insertion direction of the battery pack is parallel to the length extension direction of the connecting pipe.

9. The counterpoise structure of claim 1, wherein, One end of the connecting pipe is provided with a slot, both sides of the slot are provided with fastening seats for fastening, one side of the fastening seat is provided with a through hole for the bolt to pass through, and the other side of the fastening seat is provided with a threaded hole for threadedly connecting with the bolt, the size of the hole in the connecting pipe is changed by rotating the bolt, a positioning hole in communication with the connecting pipe is arranged on the connecting pipe close to the fastening seat, the positioning hole is used for inserting a screw to position and fasten the operation pipe inserted into the connecting pipe, the other end of the connecting pipe is provided with a limiting hole for inserting a locking pin, the locking pin passes through the limiting hole and is threadedly connected with a nut, and the locking pin passing through the limiting hole partially protrudes from the inner wall of the connecting pipe for limiting cooperation with the outer tube of the inserted flexible shaft.

10. A backpack lawn mower characterized by The back frame, the engine assembly, the flexible shaft outer tube, the operation pipe, the cutting head and the back-mounted electric contact rod seat structure of any one of claims 1-9 are included, the engine assembly is mounted on the back frame, one end of the flexible shaft outer tube is connected with the engine assembly, the other end of the flexible shaft outer tube is connected with the connecting pipe, one end of the operation pipe is connected with the connecting pipe, the cutting head is connected to the other end of the operation pipe, the flexible shaft is arranged in the flexible shaft outer tube, the rigid transmission shaft is arranged in the operation pipe, one end of the flexible shaft is connected with the output end of the engine assembly, the other end of the flexible shaft is connected with the rigid transmission shaft, and the rigid transmission shaft is in transmission connection with the cutting head.

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