CN218528830U

CN218528830U - Combined type swing saw

Info

Publication number: CN218528830U
Application number: CN202222831271.4U
Authority: CN
Inventors: 于春江; 豆以彪; 于荟洋
Original assignee: Hunan Yueda Biomedical Co ltd
Current assignee: Hunan Yueda Biomedical Co ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-02-28
Anticipated expiration: 2032-10-26

Abstract

The utility model discloses a modular pendulum saw, including the handle: the handle is provided with a motor, the output end of the motor is connected with a transmission assembly, the end part of the transmission assembly is provided with a swing shaft, a saw blade is arranged on the swing shaft, the saw blade is driven to swing in a reciprocating mode by taking the axis of the swing shaft as a base point, the transmission assembly comprises a shell connected with the motor, the shell is rotatably connected with a swinging piece, one end of the swinging piece is in linear contact with the output end of the motor, and the other end of the swinging piece is connected with the swing shaft. The utility model discloses in, this pendulum saw is through the swing piece that sets up for the output of motor can with the linear contact of the one end both sides inner wall of swing piece, thereby make the other end of swing piece can reciprocating type cyclic oscillation, thereby the drive saw bit carries out the reciprocal swing operation, on the basis of guaranteeing pendulum saw normal operating, the effectual part quantity that reduces pendulum saw transmission structure has simplified transmission structure, has reduced manufacturing cost and follow-up maintenance use cost.

Description

Combined type swing saw

Technical Field

The utility model relates to a pendulum saw technical field especially relates to a modular pendulum saw.

Background

In the orthopedic surgery, the damaged bone tissue of a patient is often cut off by a saw blade, in the cutting process, in order to avoid excessive bleeding of the patient, the smaller the cut wound is, the better the cut wound is, the medical saw needs to swing at a high speed in a smaller stroke for cutting, and due to the adoption of the motion characteristics of small swing and high swing frequency, the swing saw only cuts off the bone tissue without damaging muscles, soft tissues and nerve tissues.

Chinese patent publication No.: CN201453322U discloses "a horizontal pendulum saw of medical orthopedics", including a handle section of thick bamboo, rear portion and handle section of thick bamboo front end portion inner wall cooperation be connected pendulum axle shell, connect the end cover of the anterior vertical chamber lower oral area of pendulum axle shell, both ends connect the eccentric shaft in a handle section of thick bamboo through two first bearing cooperations, connect the spherical wheel that is connected at eccentric shaft front end portion and is located the horizontal intracavity in pendulum axle shell rear portion through the second bearing cooperation, its characterized in that: a plurality of positioning pins with equal distance are arranged on the circular ring surface at the upper end of a swing shaft sleeve, and two end parts of the swing shaft sleeve are connected with the vertical cavity at the front part of the swing shaft shell in a matching way through two third bearings; a positioning groove is arranged below the circular ring at the upper end of the cutter pressing shaft and is correspondingly matched with a plurality of positioning pins on the circular ring at the upper end of the swing shaft sleeve; the lower end of the cutter pressing shaft penetrates through a stepped hole in the center of the swing shaft sleeve, a compression spring and a first check ring and is in matched connection with a button arranged in the center of the end cover through a snap spring and a pin, and the upper end of the button penetrates through the first check ring and abuts against the compression spring; the rear end part of a saw cutter is provided with a plurality of positioning holes at equal intervals, the plurality of positioning holes of the saw cutter are correspondingly matched with the plurality of positioning pins on the circular ring at the upper end of the swing shaft sleeve, and the saw cutter is clamped between the lower surface of the circular ring at the upper end of the cutter pressing shaft and the upper surface of the circular ring at the upper end of the swing shaft sleeve; the front part of a shifting fork passes through openings on a horizontal cavity and a vertical cavity partition wall of the pendulum shaft sleeve and is matched with a first bearing partition sleeve fixedly connected to the middle part of the pendulum shaft sleeve, and the inner side of a rear fork part of the shifting fork is contacted with a spherical wheel positioned in the horizontal cavity at the rear part of the pendulum shaft shell.

The existing oscillating saw adopts more parts to be connected in a transmission mode in order to realize stable transmission between the saw blade and the motor, so that the connecting structure between the saw blade and the motor is relatively complex, the number of used parts is large, the production and manufacturing cost is increased, and the later-stage use and maintenance cost is also increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adopt the less spare part transmission structure of quantity, realize the stable swing of saw bit, reduce production and use cost's a modular pendulum saw.

In order to achieve the above object, the present invention provides the following technical solutions: a combination pendulum saw comprising a handle:

the handle is provided with a motor, and the output end of the motor is connected with a transmission assembly;

the end part of the transmission assembly is provided with a swing shaft, and the swing shaft is provided with a saw blade and drives the saw blade to swing in a reciprocating manner by taking the axis of the swing shaft as a base point;

the transmission assembly comprises a shell connected with the motor, the shell is rotatably connected with a swinging piece, one end of the swinging piece is in linear contact with the output end of the motor, and the other end of the swinging piece is connected with a swinging shaft.

As a further description of the above technical solution:

the swinging piece comprises a swinging rod, the swinging rod is rotatably connected with the shell through a shaft lever, one end of the swinging rod is provided with a U-shaped transmission frame, and the other end of the swinging rod is provided with a transmission ring.

As a further description of the above technical solution:

the transmission assembly further comprises an eccentric shaft arranged at the output end of the motor, a spacer bush is arranged on the eccentric shaft, and the spacer bush is in linear contact with the inner walls of the parallel ends on the two sides of the transmission frame.

As a further description of the above technical solution:

the transmission ring is provided with a through hole matched with the outer wall of the swing shaft, and the cross section of the through hole is of a pentagonal structure.

As a further description of the above technical solution:

the head of saw bit is provided with the sawtooth of a plurality of equidistance distribution, the afterbody of saw bit is equipped with the axle slot with the balance staff joint.

As a further description of the above technical solution:

the saw blade is provided with a positioning hole, and the top of the swing shaft is provided with a gland positioned on the upper surface of the saw blade.

As a further description of the above technical solution:

the saw blade is provided with a chip removal hole.

As a further description of the above technical solution:

the handle is embedded with a battery, and the handle is provided with a switch button.

In the technical scheme, the utility model provides a pair of modular pendulum saw has following beneficial effect:

this pendulum saw is through the swing piece that sets up for the output of motor can with the one end both sides inner wall linear contact of swing piece, thereby make the other end of swing piece can reciprocating type circulation swing, thereby the drive saw bit carries out reciprocal swing operation, on the basis of guaranteeing pendulum saw normal operating, the effectual part quantity that reduces pendulum saw transmission structure has simplified the transmission structure, has reduced manufacturing cost and follow-up maintenance use cost.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.

Fig. 1 is a schematic structural view of a combined oscillating saw provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a joint between a motor and a transmission assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a swinging member provided by an embodiment of the present invention;

fig. 4 is a schematic structural view of a saw blade according to an embodiment of the present invention.

Description of reference numerals:

1. a handle; 2. a switch button; 3. a motor; 4. a transmission assembly; 41. an eccentric shaft; 42. a spacer bush; 43. a swinging member; 431. a swing rod; 432. a transmission frame; 433. a shaft lever; 434. a drive ring; 435. a through hole; 44. a housing; 5. a pendulum shaft; 6. a saw blade; 61. saw teeth; 62. chip removal holes; 63. a shaft groove; 64. positioning holes; 7. a gland; 8. a battery.

Detailed Description

In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.

As shown in fig. 1 to 4, a combined oscillating saw comprises a handle 1:

the handle 1 is provided with the motor 3, the battery 8 is embedded in the handle 1, the handle 1 is provided with the switch button 2, the switch button 2 squeezes an elastic conducting sheet (not shown in the figure) in the handle 1 by pressing the switch button 2, so that the elastic conducting sheet is connected with the discharge end of the battery 8 and the motor 3, a power supply circuit of the battery 8 and the motor 3 is conducted, the battery 8 supplies power to the motor 3 to enable the motor 3 to work,

the output end of the motor 3 is connected with a transmission assembly 4, the end part of the transmission assembly 4 is provided with a swing shaft 5, the swing shaft 5 is provided with a saw blade 6, and the saw blade 6 is driven to swing in a reciprocating manner by taking the axis of the swing shaft 5 as a base point;

drive assembly 4 includes the casing 44 of being connected with motor 3, casing 44 rotates and is connected with oscillating piece 43, and oscillating piece 43's one end and motor 3's output linear contact, the other end is connected with pendulum shaft 5, make motor 3's output can with oscillating piece 43's one end both sides inner wall linear contact, thereby make oscillating piece 43's the other end can reciprocating type cyclic oscillation, thereby drive saw bit 6 carries out the reciprocal swing operation, on the basis of guaranteeing pendulum saw normal operating, the effectual part quantity that has reduced pendulum saw transmission structure, the transmission structure is simplified, manufacturing cost and follow-up maintenance use cost have been reduced.

The swinging component 43 comprises a swinging rod 431, the swinging rod 431 is rotatably connected with the shell 44 through a shaft rod 433, one end of the swinging rod 431 is provided with a U-shaped transmission frame 432, the other end of the swinging rod 431 is provided with a transmission ring 434, the transmission component 4 further comprises an eccentric shaft 41 arranged at the output end of the motor 3, a spacer 42 is arranged on the eccentric shaft 41, the outer wall of the spacer 42 is of an arc structure, the eccentric shaft 41 can drive the spacer 42 to rotate synchronously, at the moment, the rotating state of the spacer 42 is similar to a cam structure, the spacer 42 can be in linear contact with the inner walls of the two parallel ends of the transmission frame 432, the transmission ring 434 is provided with a through hole 435 matched with the outer wall of the swinging shaft 5, the cross section of the through hole 435 is of a pentagonal structure, when the eccentric shaft 41 is driven to rotate by the motor 3, the eccentric shaft 41 can drive the spacer 42 to rotate synchronously, at the moment, the spacer 42 deflects in the transmission frame 432 and is in reciprocating linear contact with the inner walls of the two parallel ends of the transmission frame 432, force in different directions applied to the two parallel ends of the two side inner walls of the swinging frame 432, at the swinging rod 431, at the moment, the action of the swinging rod 431 is driven under the action of the shaft 433, and the swinging rod 431 can pass through the swinging shaft 435.

Saw bit 6's head is provided with the sawtooth 61 that a plurality of equidistance distributes, saw bit 6's afterbody is equipped with the axle slot 63 with pendulum shaft 5 joint, axle slot 63 is half pentagonal structure, make saw bit 6 can be through the outer wall of axle slot 63 joint at pendulum shaft 5, be equipped with locating hole 64 on the saw bit 6, the top of pendulum shaft 5 is provided with the gland 7 that is located saw bit 6 upper surface, after saw bit 6 is connected with pendulum shaft 5, push down gland 7, make the locating head (not shown in the figure) of gland 7 lower surface imbed in locating hole 64, can consolidate the position of saw bit 6, prevent that saw bit 6 from taking place to rock the phenomenon that drops even when the swing, improve pendulum saw's safety in utilization.

The saw blade 6 is provided with the chip removal hole 62, so that the weight of the saw blade 6 can be reduced, and meanwhile, when the saw blade 6 cuts bones, bone chips generated by cutting can be discharged downwards along the chip removal hole 62, and the bone chips are prevented from being remained and gathered on the saw blade 6.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive on the scope of the appended claims.

Claims

1. A modular pendulum saw, includes handle (1), its characterized in that:

the handle (1) is provided with a motor (3), and the output end of the motor (3) is connected with a transmission assembly (4);

a swing shaft (5) is arranged at the end part of the transmission assembly (4), a saw blade (6) is arranged on the swing shaft (5), and the saw blade (6) is driven to swing back and forth by taking the axis of the swing shaft (5) as a base point;

the transmission assembly (4) comprises a shell (44) connected with the motor (3), the shell (44) is rotatably connected with a swinging piece (43), one end of the swinging piece (43) is in linear contact with the output end of the motor (3), and the other end of the swinging piece is connected with the swinging shaft (5).

2. The combination oscillating saw of claim 1, wherein: the swinging piece (43) comprises a swinging rod (431), the swinging rod (431) is rotatably connected with the shell (44) through a shaft lever (433), one end of the swinging rod (431) is provided with a U-shaped transmission frame (432), and the other end of the swinging rod (431) is provided with a transmission ring (434).

3. The combination oscillating saw of claim 1, wherein: the transmission assembly (4) further comprises an eccentric shaft (41) arranged at the output end of the motor (3), a spacer bush (42) is arranged on the eccentric shaft (41), and the spacer bush (42) is in linear contact with the inner walls of the two parallel ends of the two sides of the transmission frame (432).

4. The combination pendulum saw of claim 2, wherein: the transmission ring (434) is provided with a through hole (435) matched with the outer wall of the swing shaft (5), and the cross section of the through hole (435) is of a pentagonal structure.

5. The combination oscillating saw of claim 1, wherein: the head of saw bit (6) is provided with sawtooth (61) that a plurality of equidistance distributes, the afterbody of saw bit (6) is equipped with axle slot (63) with balance staff (5) joint.

6. The combination oscillating saw of claim 1, wherein: the saw blade (6) is provided with a positioning hole (64), and the top of the pendulum shaft (5) is provided with a gland (7) positioned on the upper surface of the saw blade (6).

7. The combination oscillating saw of claim 1, wherein: the saw blade (6) is provided with a chip removal hole (62).

8. The combination pendulum saw of claim 1, wherein: the handle (1) is embedded with a battery (8), and the handle (1) is provided with a switch button (2).