CN217591556U

CN217591556U - Head structure of mower

Info

Publication number: CN217591556U
Application number: CN202220566043.6U
Authority: CN
Inventors: 卢静南
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-15
Filing date: 2022-03-15
Publication date: 2022-10-18
Anticipated expiration: 2032-03-15

Abstract

The utility model belongs to the technical field of the lawn mower, refer in particular to a head structure of lawn mower. The saw bit mounting device comprises a clamping part and a fixing part, wherein a synchronous key is formed in the middle of the transmission shaft, the outer end of the transmission shaft is provided with a thread, the clamping part is connected with the synchronous key on the transmission shaft, and the fixing part is arranged on the thread of the transmission shaft; the transmission shaft is further sleeved with a propping part, the propping part is connected with the clamping part, and the outline of the propping part is larger than that of the clamping part. The utility model relates to a head on lawn mower for building meadow and shrub, the utility model discloses a lawn mower head compares and has the function that can quick replacement saw bit in current lawn mower head. The clamping part is fixed without using an additional tool, and the transmission shaft can be limited to rotate along with the clamping part only by grabbing the abutting part with a hand.

Description

Head structure of mower

Technical Field

The utility model belongs to the technical field of the lawn mower, refer in particular to a head structure of lawn mower.

Background

The lawn mower is garden equipment for trimming grasslands and shrubs, and the main structure of the lawn mower comprises a machine head and a handle, wherein the machine head is arranged at the front end of the mower body, the handle is arranged at the rear end of the mower body, the machine head and the handle are connected through an extension rod, and therefore a user can trim the grasslands without squatting. Most lawn mowers on the market can set up driving motor in the aircraft nose, and driving motor connects the transmission shaft to adorn the saw bit on the transmission shaft, driving motor rotates and drives the epaxial saw bit rotation of transmission, thereby accomplishes the effect of pruning meadow and little bush.

Present saw bit passes through the clamping part and fixes on the transmission shaft with the fixed part, the clamping part sets up in order to support saw bit one side in the saw bit inboard, the fixed part passes through the opposite side of screw thread fixation at the saw bit, the aircraft nose structure is more troublesome when dismantling the saw bit in the past, need stretch into the saw bit inboard with special instrument earlier with fixed clamping part, prevent that the transmission shaft from following the rotation when the pine fixed part turns, just can reuse another instrument rotation fixed part, take off the fixed part from the transmission shaft, just can pull down the saw bit, it is very inconvenient, and need use a plurality of instruments to dismantle the saw bit.

Disclosure of Invention

The utility model aims at providing a simple structure can dismantle the lawn mower aircraft nose structure of saw bit fast.

The purpose of the utility model is realized like this:

a head structure of a mower comprises a head main body, wherein a driving motor and a transmission shaft directly or indirectly connected with the driving motor are arranged inside the head main body, one end of the transmission shaft is positioned in the head main body, the other end of the transmission shaft is positioned outside the head main body, a saw blade mounting device is arranged on the transmission shaft positioned outside the head main body and comprises a clamping part and a fixing part which are arranged on the transmission shaft, a saw blade is mounted between the clamping part and the fixing part, a synchronous key is formed in the middle of the transmission shaft, a thread is formed at the outer end of the transmission shaft, the clamping part is connected with the synchronous key on the transmission shaft, the fixing part is arranged on the thread of the transmission shaft, and the rotation of the transmission shaft can drive the clamping part and the fixing part to rotate synchronously; the transmission shaft is further sleeved with a propping part, the propping part is connected with the clamping part, and the outline of the propping part is larger than that of the clamping part.

The utility model discloses it is further, support the middle part of holding the portion seted up with the key slot hole of synchronous key adaptation, support the portion of holding and wear to locate synchronous key through the key slot hole on, the transmission shaft can drive and support the synchronous rotation of holding the portion.

The utility model discloses it is further, one side shaping of clamping part has the fastener, the fastener card in on the synchronous key, the clamping part through the fastener with the transmission shaft is connected.

The utility model discloses it is further, the spread groove has been seted up to the key slot hole side in the portion of holding, the fastener card in the spread groove.

The utility model discloses it is further, support in the holding portion seted up with the holding tank of clamping part adaptation, the clamping part set up in the holding tank.

The utility model discloses it is further, a plurality of anti-skidding lines have been seted up on the outline of holding portion.

The utility model discloses it is further, a plurality of disassembly holes have been seted up on the fixed part.

The utility model discloses it is further, be provided with reduction gears in the aircraft nose main part, reduction gears is including setting up in the epaxial pinion of driving motor, and the side of pinion is provided with rather than the gear wheel of meshing, the gear wheel is connected with the transmission shaft, and the gear wheel can drive the synchronous rotation of transmission shaft by the rotational energy.

Compared with the prior art, the utility model has the advantages that:

the utility model relates to a head on lawn mower for building meadow and shrub, the utility model discloses a lawn mower head compares and has the function that can quick replacement saw bit in current lawn mower head. The specific structure comprises a machine head main body and a driving motor arranged in the machine head main body, the machine head main body generally adopts a plastic shell, the driving motor is directly or indirectly connected with a transmission shaft, one end of the transmission shaft is positioned in the machine head main body and is used for being in transmission connection with the driving motor, the other end of the transmission shaft is positioned outside the machine head main body and is used for installing a saw blade, and the driving motor can drive the saw blade to rotate through the transmission shaft. The transmission shaft comprises a saw blade mounting device for fixing a saw blade on the transmission shaft, the saw blade mounting device comprises a clamping part and a fixing part, the clamping part and the fixing part can be connected with the transmission shaft, the clamping part is sleeved on the transmission shaft firstly when the saw blade is mounted, the middle part of the saw blade is sleeved on the transmission shaft, the inner side of the saw blade is abutted against the clamping part, and finally the fixing part and the transmission shaft are fixed through threads to complete the mounting of the saw blade. The shaping has synchronous key on the transmission shaft, and the clamping part is connected with the epaxial synchronous key of transmission to restricted the relative rotation between clamping part and the transmission shaft, when dismantling or installing the saw bit, can drive the transmission shaft and rotate together when preventing to rotate the fixed part, lead to unable commentaries on classics pine fixed part, consequently need fix the clamping part earlier when dismantling or installing the saw bit, thereby the transmission shaft also follows the rotation when can restricting the commentaries on classics pine fixed part. The utility model discloses in still be provided with the portion of holding of supporting that can be connected with the clamping part, the outline of supporting the portion of holding is greater than the outline of clamping part. Therefore, tools are not needed, an operator can limit the rotation of the clamping part only by holding the clamping part with hands, the clamping part cannot rotate, and the transmission shaft cannot rotate. For lawn mower aircraft nose structure in the past, the utility model discloses can be more convenient when dismantling or installing the saw bit, need not to fix the clamping part earlier with extra instrument, only need to grasp with the hand and support the portion and can restrict the transmission shaft and follow the rotation. The structure is simple and reasonable.

Drawings

Fig. 1 is a use state diagram of the present invention.

Fig. 2 is a schematic structural diagram of the present invention.

Fig. 3 is a side view of the present invention.

Fig. 4 is a schematic diagram of the internal structure of the present invention.

Fig. 5 is a schematic view of a saw blade connection structure according to the present invention.

Fig. 6 is a second schematic view of the saw blade connection structure of the present invention.

Fig. 7 is a schematic view of the saw blade mounting device according to the present invention.

Fig. 8 is a second schematic view of the saw blade mounting device of the present invention.

Fig. 9 is a side view of the saw blade mounting device of the present invention.

Fig. 10 is a sectional view of a saw blade mounting device according to the present invention.

Fig. 11 is a schematic view of the connection state of the middle transmission shaft and the clamping portion according to the present invention.

Fig. 12 is a schematic structural view of the middle transmission shaft of the present invention.

Fig. 13 is a front view of the middle drive shaft of the present invention.

Fig. 14 is a schematic view of the connection state between the holding portion and the holding portion according to the present invention.

Fig. 15 is a schematic structural view of the middle support portion of the present invention.

Fig. 16 is a schematic structural view of the clamping portion of the present invention.

The reference numerals in the figures denote the meanings:

1-a handpiece main body; 2-driving the motor; 3, driving a shaft; 4-a clamping part; 5-a fixed part; 6-saw blade; 7-a synchronization key; 8-thread; 9-a holding portion; 10-a key slot; 11-a clip; 12-a connecting trough; 13-accommodating grooves; 14-non-slip pattern; 15-detaching holes; 16-pinion gear; 17-gearwheel.

Detailed Description

The invention will be further described with reference to specific embodiments below:

a head structure of a mower comprises a head main body 1, wherein a driving motor 2 and a transmission shaft 3 directly or indirectly connected with the driving motor 2 are arranged inside the head main body 1, one end of the transmission shaft 3 is located inside the head main body 1, the other end of the transmission shaft is located outside the head main body 1, a saw blade 6 mounting device is arranged on the transmission shaft 3 located outside the head main body 1, the saw blade 6 mounting device comprises a clamping part 4 and a fixing part 5 which are arranged on the transmission shaft 3, a synchronous key 7 is formed in the middle of the transmission shaft 3, a thread 8 is formed at the outer end of the transmission shaft 3, the clamping part 4 is connected with the synchronous key 7 on the transmission shaft 3, the fixing part 5 is arranged on the thread 8 of the transmission shaft 3, and the transmission shaft 3 can drive the clamping part 4 and the fixing part 5 to rotate synchronously by rotation; the transmission shaft 3 is further sleeved with a propping part 9, the propping part 9 is connected with the clamping part 4, and the outer contour of the propping part 9 is larger than that of the clamping part 4.

The utility model relates to a head on lawn mower for building meadow and shrub, the utility model discloses a lawn mower head compares and has the function that can quick replacement saw bit 6 in current lawn mower head. Specific structure has included aircraft nose main part 1 and has set up driving motor 2 in aircraft nose main part 1, aircraft nose main part 1 generally adopts plastic housing, and driving motor 2 directly or indirectly is connected with

transmission shaft

3, and 3 one end of transmission shaft is located aircraft nose main part 1 and is used for being connected with driving motor 2 transmission, and the other end is located aircraft nose main part 1 and is used for installing saw bit 6 outward, and driving motor 2 accessible transmission shaft 3 drives saw bit 6 and rotates. Including being used for fixing saw bit 6 installation device on transmission shaft 3 with saw bit 6 on transmission shaft 3, including clamping part 4 and fixed part 5, clamping part 4 and fixed part 5 homoenergetic are connected with transmission shaft 3, during the installation of saw bit 6, establish on transmission shaft 3 with 4 covers of clamping part earlier, overlap the middle part of saw bit 6 in transmission shaft 3 again, the inboard of saw bit 6 supports with 4 offsets of clamping part, fix fixed part 5 and transmission shaft 3 through screw thread 8 at last, accomplish the installation of saw bit 6. The shaping has synchronous key 7 on transmission shaft 3, clamping part 4 is connected with the last synchronous key 7 of transmission shaft 3, thereby restricted the relative rotation between clamping part 4 and the transmission shaft 3, when dismantling or installing saw bit 6, can drive transmission shaft 3 and rotate together when preventing to rotate fixed part 5, lead to unable pine fixed part 5 that turns, consequently need fix clamping part 4 earlier when dismantling or installing saw bit 6, thereby transmission shaft 3 also follows the rotation when can restricting the pine fixed part 5 that turns. The utility model discloses in still be provided with the portion 9 of holding that supports that can be connected with clamping part 4, support the outline of holding 9 and be greater than the outline of clamping part 4. Therefore, tools are not needed, an operator can limit the rotation of the holding part 9 only by holding the holding part 9 with hands, the holding part 9 cannot rotate, and the clamping part 4 and the transmission shaft 3 cannot rotate. For lawn mower aircraft nose structure in the past, the utility model discloses can be more convenient when dismantling or installing saw bit 6, need not to fix clamping part 4 earlier with extra instrument, only need to grasp with the hand and support portion 9 and can restrict transmission shaft 3 and follow the pivoted problem. The structure is simple and reasonable.

The utility model discloses further, support the middle part of holding portion 9 seted up with the keyway hole 10 of synchronous key 7 adaptation, support holding portion 9 and wear to locate synchronous key 7 through keyway hole 10 on, transmission shaft 3 can drive and support holding portion 9 and rotate in step. When the saw blade 6 is dismounted, the transmission shaft 3 can be directly fixed through the abutting part 9, so that the rotation of the transmission shaft 3 is limited; when the mower is used, the transmission shaft 3 can directly drive the abutting part 9 to synchronously rotate.

The utility model discloses an optimal mode, one side shaping of clamping part 4 has fastener 11, the quantity of fastener 11 is two, fastener 11 block in on the synchronous key 7, clamping part 4 through fastener 11 with transmission shaft 3 is connected. Synchronous key 7 is including offering the plane in transmission shaft 3 both sides, 4 covers of clamping part are established when the transmission shaft 3 is gone up, and fastener 11 on the clamping part 4 can block synchronous key 7 to transmission shaft 3 rotates and can drive clamping part 4 synchronous rotation.

The utility model discloses an optimal mode, the spread groove 12 has been seted up to the keyway hole 10 side on holding portion 9, fastener 11 block in spread groove 12. When the clamping piece 11 on the clamping part 4 is clamped on the side surface of the synchronous key 7, the clamping piece can also be clamped on the connecting groove 12 on the abutting part 9, the transmission shaft 3, the abutting part 9 and the clamping part 4 are connected in pairs, the connection is more stable and compact, and the clamping piece is not easy to separate.

The utility model discloses an optimal mode, support and set up on the portion 9 with the holding tank 13 of 4 adaptations of clamping part, clamping part 4 set up in the holding tank 13. When clamping part 4 sets up in holding tank 13, the outer terminal surface of clamping part 4 and the outer terminal surface that supports portion 9 are in same terminal surface, and at this moment, clamping part 4 and support portion 9 homoenergetic and support the medial surface of saw bit 6, increase saw bit 6's area of contact, saw bit 6 is not fragile when the cutting.

The utility model discloses a preferred mode, a plurality of anti-skidding lines 14 have been seted up on the outline of holding portion 9. The provision of the non-slip threads 14 makes it easier for the operator to grasp the outer contour of the holding portion 9.

The utility model discloses an optimal mode, a plurality of disassembly hole 15 have been seted up on the fixed part 5. The dismounting holes 15 are used for facilitating auxiliary holes during dismounting, at least two dismounting holes 15 of the fixing part 5 need to be clamped into by a special tool during dismounting, and the fixing part 5 can be dismounted or screwed from the transmission shaft 3 more easily by rotating the tool.

The utility model discloses a preferred mode, be provided with reduction gears in the aircraft nose main part 1, reduction gears is including setting up in the epaxial pinion 16 of driving motor 2 motor, and the side of pinion 16 is provided with rather than the gear wheel 17 of meshing, gear wheel 17 is connected with transmission shaft 3, and gear wheel 17 can drive 3 synchronous rotations of transmission shaft in a rotating manner.

The above embodiment is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited in this way, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A head structure of lawn mower which characterized in that: the automatic saw-tooth machine head comprises a machine head main body (1), wherein a driving motor (2) and a transmission shaft (3) directly or indirectly connected with the driving motor (2) are arranged inside the machine head main body (1), one end of the transmission shaft (3) is located inside the machine head main body (1), the other end of the transmission shaft is located outside the machine head main body (1), a saw blade (6) mounting device is arranged on the transmission shaft (3) located outside the machine head main body (1), the saw blade (6) mounting device comprises a clamping part (4) and a fixing part (5) which are arranged on the transmission shaft (3), the saw blade (6) is mounted between the clamping part (4) and the fixing part (5), a synchronous key (7) is formed in the middle of the transmission shaft (3), a thread (8) is formed in the outer end part of the transmission shaft (3), the clamping part (4) is connected with the synchronous key (7) on the transmission shaft (3), the fixing part (5) is arranged on the thread (8) of the transmission shaft (3), and the transmission shaft (3) can drive the clamping part (4) and the fixing part (5) to rotate synchronously; the transmission shaft (3) is further sleeved with a propping part (9), the propping part (9) is connected with the clamping part (4), and the outer contour of the propping part (9) is larger than that of the clamping part (4).

2. The head structure of a lawnmower according to claim 1, wherein: the middle part of the abutting part (9) is provided with a key slot hole (10) matched with the synchronous key (7), the abutting part (9) penetrates through the synchronous key (7) through the key slot hole (10), and the transmission shaft (3) can drive the abutting part (9) to synchronously rotate.

3. The head structure of a lawnmower according to claim 1 or 2, wherein: a clamping piece (11) is formed on one side of the clamping part (4), the clamping piece (11) is clamped on the synchronous key (7), and the clamping part (4) is connected with the transmission shaft (3) through the clamping piece (11).

4. A head structure of a lawnmower according to claim 3, wherein: the side edge of the key groove hole (10) on the abutting part (9) is provided with a connecting groove (12), and the clamping piece (11) is clamped in the connecting groove (12).

5. The head structure of a lawnmower according to claim 4, wherein: an accommodating groove (13) matched with the clamping part (4) is formed in the abutting part (9), and the clamping part (4) is arranged in the accommodating groove (13).

6. The head structure of a lawnmower according to claim 1 or 2, wherein: the outer contour of the propping part (9) is provided with a plurality of anti-skid grains (14).

7. The head structure of a lawnmower according to claim 1, wherein: the fixing part (5) is provided with a plurality of dismounting holes (15).

8. The head structure of a lawnmower according to claim 1, wherein: be provided with reduction gears in aircraft nose main part (1), reduction gears is including setting up pinion (16) on driving motor (2) motor shaft, and the side of pinion (16) is provided with gear wheel (17) rather than meshing, gear wheel (17) are connected with transmission shaft (3), and gear wheel (17) rotation can drive transmission shaft (3) synchronous revolution.