CN218926428U

CN218926428U - Transmission structure of reciprocating saw

Info

Publication number: CN218926428U
Application number: CN202223328049.9U
Authority: CN
Inventors: 姜汇洋
Original assignee: Yongkang Yuanyuan Technology Co ltd
Current assignee: Yongkang Yuanyuan Technology Co ltd
Priority date: 2022-12-13
Filing date: 2022-12-13
Publication date: 2023-04-28
Anticipated expiration: 2032-12-13

Abstract

The utility model belongs to the technical field of electric tools, in particular to a transmission structure of a reciprocating saw, which comprises a motor, wherein a motor shaft of the motor is connected with a gear disc, a needle roller is eccentrically arranged on the gear disc, a reciprocating piece is arranged on the needle roller, one end of the reciprocating piece is provided with a reciprocating groove, the needle roller is arranged in the reciprocating groove and drives the reciprocating piece to reciprocate, a first rack is formed at the other end of the needle roller and is in transmission connection with a connecting rod for connecting a saw blade through a transmission tooth, a second rack is formed on the connecting rod, the first rack is meshed with the transmission tooth, the transmission tooth is driven to rotate when the reciprocating piece moves, the transmission tooth is meshed with the second rack, and the transmission tooth is driven to reciprocate when the transmission tooth rotates.

Description

Transmission structure of reciprocating saw

Technical Field

The utility model belongs to the technical field of electric tools, in particular to a transmission structure of a reciprocating saw.

Background

The reciprocating saw is one kind of electric saw with reciprocating saw blade and consists of casing, motor, transmission mechanism, saw blade, switch, etc.

The existing reciprocating saw is to drive the reciprocating rod to reciprocate through a motor, and the saw blade is generally and directly mounted to the reciprocating rod, so that the saw blade can reciprocate along with the reciprocating rod to realize the cutting function, for example, the Chinese patent number 201510475774.4 discloses a reciprocating saw, which comprises: the device comprises a motor, a reciprocating rod, an impact piece, a driven gear and a driving gear. The motor comprises a rotor, the reciprocating rod is used for installing a saw blade, the impact piece is used for driving the reciprocating piece, the driven gear is used for driving the impact piece, and the driving gear can synchronously rotate along with the motor rotor.

The transmission mode of directly mounting the saw blade to the reciprocating rod reduces spare and accessory parts, is simple to mount, but when the impact piece eccentrically rotates to drive the reciprocating rod, the front and back driving force is generated, the up and down driving force is also generated, so that the vibration generated when the saw blade reciprocates is larger, the stability is not good enough, and the cutting quality of a workpiece is affected.

Disclosure of Invention

The utility model aims to provide a transmission structure which has a simple structure and is applied to a reciprocating saw, so that the reciprocating motion stability and the cutting quality of the saw blade are better.

The purpose of the utility model is realized in the following way:

the utility model provides a transmission structure of reciprocating saw, includes the motor, and the motor shaft of motor is connected with the gear wheel, and the eccentric bearing is provided with the kingpin on the gear wheel, is provided with the reciprocating piece on the kingpin, and reciprocating groove has been seted up to reciprocating piece one end, the kingpin set up in reciprocating inslot and drive reciprocating piece reciprocating motion, the other end shaping have first rack and be connected with the connecting rod transmission that is used for connecting the saw bit through the drive tooth, the shaping has the second rack on the connecting rod, first rack and drive tooth meshing, drive tooth rotates during the reciprocating piece motion, drive tooth and second rack meshing, drive connecting rod reciprocating motion during the drive tooth rotates.

Further, the transmission teeth comprise a first transmission tooth and a second transmission tooth, the first rack is meshed with the first transmission tooth, the first transmission tooth is meshed with the second transmission tooth, and the second transmission tooth is meshed with the second rack.

Further, the front end of the motor shaft is provided with a bevel gear, and the bevel gear is meshed with the gear disc.

Further, the saw blade device further comprises a gear box, wherein the gear plate, the reciprocating piece and the transmission teeth are all arranged in the gear box, one end of the connecting rod is arranged in the gear box and connected with the transmission teeth, and the other end of the connecting rod is exposed and used for installing the saw blade.

Further, a guide channel is formed in one end of the gear box, and the first rack and the second rack are arranged in the guide channel.

Further, the gear box comprises a box body, a detachable gland and a support are arranged on the box body, the gear disc is arranged below the gland, and the guide channel is arranged in the support.

Further, the support is provided with upper bracket and lower carriage including dismantling, and upper bracket and lower carriage internal shaping have first direction passageway, second direction passageway and gear installation groove, and the gear installation groove intercommunication first direction passageway and second direction passageway, first rack is installed in first direction passageway, the second rack is installed in second direction passageway.

Further, the end of the connecting rod is provided with a saw blade installation component, the saw blade installation component comprises a saw blade chuck and a tool changing knob, a clamping groove is formed in the saw blade chuck, the tool changing knob is sleeved on the saw blade chuck, and the saw blade is installed in the clamping groove and fastened through the tool changing knob.

Further, a saw blade adjusting piece is further arranged on one side of the connecting rod, the saw blade adjusting piece comprises a length adjusting plate and a saw blade backup plate, and a mounting hole for the saw blade to penetrate is formed in the saw blade backup plate.

Further, a fan blade is further arranged on a motor shaft of the motor.

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

the utility model relates to a transmission structure for a reciprocating saw, which is arranged in a shell of the reciprocating saw, and a reciprocating piece is indirectly connected with a saw blade through transmission teeth, so that the upward and downward pushing acting force on the reciprocating piece when a needle roller rotates is reduced, the defects in the prior art are overcome, the vibration generated when the reciprocating saw is used can be reduced, and the stability is better;

the method is realized specifically as follows: the saw blade is driven to reciprocate by the motor through a transmission structure, the transmission structure comprises a gear disc, a reciprocating piece, transmission teeth and a connecting rod, a motor shaft of the motor is connected with the gear disc, the gear disc changes the transmission direction, the gear disc can be rotatably arranged and is eccentrically provided with a rolling pin, the rolling pin can be integrally arranged with the gear disc or can be detachably arranged, and the reciprocating piece is arranged on the rolling pin; one end of the reciprocating piece is provided with a waist-shaped reciprocating groove, the needle roller is arranged in the reciprocating groove and drives the reciprocating piece to reciprocate, the needle roller can move up and down in the range of the reciprocating groove, and meanwhile, due to the eccentric arrangement of the needle roller, the front-back distance change can be generated when the needle roller rotates, and the needle roller pushes the reciprocating piece to move back and forth at the moment; the other end of the reciprocating piece is in transmission connection with the connecting rod through a transmission tooth, a first rack is formed on the reciprocating piece and meshed with the transmission tooth, the transmission tooth is driven to rotate when the reciprocating piece moves, a second rack is formed on the connecting rod, the transmission tooth is meshed with the second rack, the connecting rod is driven to reciprocate when the transmission tooth rotates, and the other end of the connecting rod is used for installing a saw blade.

Compared with the traditional method that the saw blade is mounted on the reciprocating piece, when the reciprocating piece is eccentrically rotated, multidirectional acting force is transmitted to the saw blade, and sawing processing is quite unfavorable.

Drawings

Fig. 1 is one of the perspective views of the present utility model.

Fig. 2 is a second perspective view of the present utility model.

Fig. 3 is a cross-sectional view of the present utility model.

Fig. 4 is a perspective view of the present utility model (with the gland and upper bracket removed).

Fig. 5 is a side view of the present utility model (with the gland and upper bracket removed).

Fig. 6 is one of the perspective views of the present utility model (with the gearbox, bracket and blade adjustment removed).

FIG. 7 is a second perspective view of the present utility model (with the gearbox, bracket and blade adjustment removed).

Fig. 8 is an exploded view of the present utility model.

Fig. 9 is a perspective view of the shuttle and connecting rod mounted to the bracket.

Fig. 10 is a perspective view of the bracket.

Fig. 11 is an exploded view of the stent.

Fig. 12 is a perspective view of the shuttle.

Fig. 13 is a perspective view of the connecting rod.

The meaning indicated by the reference numerals in the figures:

1-a motor; 2-a motor shaft; 3-a gear disc; 4-rolling needles; 5-a shuttle; 6-a reciprocating trough;

7-a first rack; 8-driving teeth; 9-connecting rods; 10-a second rack; 11-first gear teeth;

12-a second gear; 13-bevel gears; 14-a gear box; 15-guiding channels; 16-a box body;

17-capping; 18-a bracket; 19-upper rack; 20-a lower bracket; 21-a first guide channel;

22-a second guide channel; 23-a saw blade cartridge; 24-a tool changing knob; 25-clamping grooves;

26-a length adjustment plate; 27-a saw blade fence; 28-mounting holes; 29-fan blades; 30-gear mounting slots.

Detailed Description

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

the utility model provides a transmission structure of reciprocating saw, includes motor 1, and motor 1's motor shaft 2 is connected with gear wheel 3, and the eccentric bearing is provided with kingpin 4 on the gear wheel 3, is provided with reciprocating piece 5 on the kingpin 4, and reciprocating groove 6 has been seted up to reciprocating piece 5 one end, kingpin 4 set up in reciprocating inslot 6 and drive reciprocating piece 5 reciprocating motion, the other end shaping have first rack 7 and be connected with the connecting rod 9 that is used for connecting the saw bit through driving tooth 8 transmission, the shaping has second rack 10 on the connecting rod 9, first rack 7 meshes with driving tooth 8, and driving tooth 8 rotates when reciprocating piece 5 moves, driving tooth 8 meshes with second rack 10, and driving connecting rod 9 reciprocating motion when driving tooth 8 rotates.

The utility model relates to a transmission structure for a reciprocating saw, which is arranged in a shell of the reciprocating saw, a reciprocating piece 5 is indirectly connected with a saw blade through a transmission tooth 8, the upward and downward pushing acting force on the reciprocating piece 5 when a needle roller 4 rotates is reduced, the defects in the prior art are overcome, the vibration generated when the reciprocating saw is used can be reduced, and the stability is better; the method is realized specifically as follows: the saw blade is driven to reciprocate by the motor 1 through a transmission structure, the transmission structure comprises a gear disc 3, a reciprocating piece 5, transmission teeth 8 and a connecting rod 9, a motor shaft 2 of the motor 1 is connected with the gear disc 3, the gear disc 3 changes the transmission direction, the gear disc 3 is rotatably arranged and is eccentrically provided with a needle roller 4, the needle roller 4 can be integrally arranged with the gear disc 3 or can be detachably arranged, and the reciprocating piece 5 is arranged on the needle roller 4; one end of the reciprocating piece 5 is provided with a waist-shaped reciprocating groove 6, the needle roller 4 is arranged in the reciprocating groove 6 and drives the reciprocating piece 5 to reciprocate, the needle roller 4 can move up and down in the range of the reciprocating groove 6, meanwhile, due to the eccentric arrangement of the needle roller 4, when the needle roller 4 rotates, the front-back distance change can be generated, and at the moment, the needle roller 4 pushes the reciprocating piece 5 to move forwards and backwards; the other end of the reciprocating piece 5 is in transmission connection with a connecting rod 9 through a transmission tooth 8, a first rack 7 is formed on the reciprocating piece 5, the first rack 7 is meshed with the transmission tooth 8, the transmission tooth 8 is driven to rotate when the reciprocating piece 5 moves, a second rack 10 is formed on the connecting rod 9, the transmission tooth 8 is meshed with the second rack 10, the connecting rod 9 is driven to reciprocate when the transmission tooth 8 rotates, and the other end of the connecting rod 9 is used for installing a saw blade. Compared with the traditional method that the saw blade is mounted on the reciprocating piece 5, when the reciprocating piece 5 is eccentrically rotated, multidirectional acting force is transmitted to the saw blade, and sawing processing is quite unfavorable.

When connecting rod 9 and reciprocating piece 5 are not in the coplanar, in order to adapt to the assembly of saw bit, drive tooth 8 includes first drive tooth 11 and second drive tooth 12, first rack 7 and first drive tooth 11 meshing, first drive tooth 11 and second drive tooth 12 meshing, second drive tooth 12 and second rack 10 meshing, this mode simple structure, assembly adaptability is nimble convenient, can increase and decrease the quantity and the change pattern of drive tooth 8 according to the user demand.

As a preferred embodiment, the front end of the motor shaft 2 is provided with a bevel gear 13, the bevel gear 13 is meshed with the gear disc 3, and the transmission is more stable.

As a preferred embodiment, the device further comprises a gear box 14, the gear disc 3, the reciprocating piece 5 and the transmission teeth 8 are arranged in the gear box 14, one end of the connecting rod 9 is arranged in the gear box 14 and connected with the transmission teeth 8, the other end of the connecting rod is exposed and used for installing a saw blade, the gear box 14 has the functions of installation and limiting, the parts are prevented from loosening and deviating during use or transportation, and the safety protection function is also achieved.

As a preferred embodiment, one end of the gear box 14 is provided with a guiding channel 15, the first rack 7 and the second rack 10 are arranged in the guiding channel 15, and the guiding channel 15 further limits the movement direction of the reciprocating member 5 and the connecting rod 9, so that the gear box is more stable and reliable.

As a preferred embodiment, the gear box 14 includes a box 16, a detachable gland 17 and a bracket 18 are disposed on the box 16, the gear plate 3 is disposed below the gland 17, so as to facilitate installation and maintenance, and the guide channel 15 is disposed in the bracket 18.

As a preferred embodiment, the bracket 18 includes an upper bracket 19 and a lower bracket 20, which are detachably arranged, so that the installation and maintenance are convenient, a first guide channel 21, a second guide channel 22 and a gear installation groove 30 are formed in the upper bracket 19 and the lower bracket 20, the gear installation groove 30 is communicated with the first guide channel 21 and the second guide channel 22, the first rack 7 is installed in the first guide channel 21, and the second rack 10 is installed in the second guide channel 22.

As a preferred embodiment, the end of the connecting rod 9 is provided with a saw blade mounting assembly, the saw blade mounting assembly comprises a saw blade chuck 23 and a tool changing knob 24, the saw blade chuck 23 is provided with a clamping groove 25, the tool changing knob 24 is sleeved on the saw blade chuck 23, the saw blade is mounted in the clamping groove 25 and fastened through the tool changing knob 24, and the saw blade is convenient and quick to assemble and disassemble and works more efficiently.

As a preferred embodiment, a saw blade adjusting member is further disposed on one side of the connecting rod 9, the saw blade adjusting member includes a length adjusting plate 26 and a saw blade backup plate 27, a mounting hole 28 for the saw blade to pass through is formed in the saw blade backup plate 27, the saw blade adjusting member can adjust the cutting length of the saw blade, and the saw blade backup plate 27 is driven to move by the forward and backward movement of the length adjusting plate 26 so as to change the length of the saw blade passing through the mounting hole 28.

As a preferred embodiment, the motor shaft 2 of the motor 1 is further provided with a fan blade 29, and the fan blade 29 removes heat generated by rotation of the motor 1, thereby prolonging the service life of the reciprocating saw.

The above embodiments are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model in this way, therefore: all equivalent changes in structure, shape and principle of the utility model should be covered in the scope of protection of the utility model.

Claims

1. A drive structure for a reciprocating saw, comprising: including motor (1), motor shaft (2) of motor (1) are connected with gear plate (3), and the eccentric bearing is provided with kingpin (4) on gear plate (3), is provided with reciprocating piece (5) on kingpin (4), and reciprocating groove (6) have been seted up to reciprocating piece (5) one end, kingpin (4) set up in reciprocating inslot and drive reciprocating piece (5) reciprocating motion, the other end shaping have first rack (7) and be connected with connecting rod (9) that are used for connecting the saw bit through driving tooth (8) transmission, the shaping has second rack (10) on connecting rod (9), first rack (7) and driving tooth (8) meshing, driving tooth (8) rotate when reciprocating piece (5) motion, driving tooth (8) and second rack (10) meshing, driving connecting rod (9) reciprocating motion when driving tooth (8) rotate.

2. A drive structure for a reciprocating saw as defined in claim 1, wherein: the transmission teeth (8) comprise first transmission teeth (11) and second transmission teeth (12), the first rack (7) is meshed with the first transmission teeth (11), the first transmission teeth (11) are meshed with the second transmission teeth (12), and the second transmission teeth (12) are meshed with the second rack (10).

3. A drive structure for a reciprocating saw as defined in claim 1, wherein: the front end of the motor shaft (2) is provided with a bevel gear (13), and the bevel gear (13) is meshed with the gear disc (3).

4. A drive structure for a reciprocating saw as defined in any one of claims 1 to 3, wherein: still include gear box (14), gear plate (3), reciprocating piece (5), driving tooth (8) all set up in gear box (14), connecting rod (9) one end set up in gear box (14) be connected with driving tooth (8), the other end exposes and is used for installing the saw bit.

5. A drive structure for a reciprocating saw as defined in claim 4, wherein: one end of the gear box (14) is provided with a guide channel (15), and the first rack (7) and the second rack (10) are arranged in the guide channel (15).

6. A drive structure for a reciprocating saw as defined in claim 5, wherein: the gear box (14) comprises a box body (16), a detachable gland (17) and a support (18) are arranged on the box body (16), the gear disc (3) is arranged below the gland (17), and the guide channel (15) is arranged in the support (18).

7. A drive structure for a reciprocating saw as defined in claim 6, wherein: the support (18) is provided with upper bracket (19) and lower carriage (20) including dismantling, and upper bracket (19) and lower carriage (20) internal shaping have first direction passageway (21), second direction passageway (22) and gear mounting groove (30), and gear mounting groove (30) intercommunication first direction passageway (21) and second direction passageway (22), first rack (7) are installed in first direction passageway (21), second rack (10) are installed in second direction passageway (22).

8. A drive structure for a reciprocating saw as defined in claim 1, wherein: the end of the connecting rod (9) is provided with a saw blade installation component, the saw blade installation component comprises a saw blade chuck (23) and a tool changing knob (24), a clamping groove (25) is formed in the saw blade chuck (23), the tool changing knob (24) is sleeved on the saw blade chuck (23), and the saw blade is installed in the clamping groove (25) and fastened through the tool changing knob (24).

9. A drive structure for a reciprocating saw as defined in claim 1 or 8, wherein: one side of the connecting rod (9) is also provided with a saw blade adjusting piece, the saw blade adjusting piece comprises a length adjusting plate (26) and a saw blade backup plate (27), and a mounting hole (28) for the saw blade to penetrate is formed in the saw blade backup plate (27).

10. A drive structure for a reciprocating saw as defined in claim 9, wherein: a fan blade (29) is further arranged on a motor shaft (2) of the motor (1).