CN117905859A - Double-swing-rod reciprocating mechanism - Google Patents

Abstract

The embodiment of the disclosure relates to the field of reciprocating machinery, and provides a double-swing-rod reciprocating mechanism, which comprises a swing rod shaft, a main swing rod bearing, a main swing rod, a reciprocating rod, a balance swing rod bearing, a balance swing rod, a balance sleeve and a motor. The balance swing rod comprises a bent rod end and a straight rod end, the bent rod end is connected with the outer ring of the balance swing rod bearing, and the connection part of the bent rod end and the balance swing rod bearing is located on the connection line of the first central axis and the second central axis. The embodiment of the disclosure provides a double-swing-rod reciprocating mechanism which has a better reciprocating balance design, can keep mechanical balance in the reciprocating motion process, has small vibration, and has a simple structure and is easy to manufacture.

Description

Double-swing-rod reciprocating mechanism

Technical Field

The embodiment of the disclosure relates to the field of reciprocating machinery, in particular to a double-swing-rod reciprocating mechanism.

Background

The reciprocating mechanism is a mechanism capable of reciprocating, and can be combined with other structures to form various mechanical tools for automatic reciprocating operation. The reciprocating mechanism comprises a main swing rod and a main swing rod bearing which mainly push the reciprocating motion, but the main swing rod and the main swing rod bearing inevitably vibrate in the process of being electrically pushed, so that the whole reciprocating mechanism is driven to vibrate. Therefore, it is often desirable to provide a shock absorbing design for the reciprocating mechanism to achieve balance in the reciprocating motion. The double-swing-rod reciprocating mechanism is one type of reciprocating mechanism, and the method for realizing the reciprocating balance design of the double-swing-rod reciprocating mechanism is to add a balance swing rod and a balance bearing. When the main swing rod is electrically pushed to move, the balance swing rod simultaneously moves in the direction opposite to the movement direction of the main swing rod, and the total resultant force is zero through the counteraction of the opposite force and the force, so that the vibration of the double-swing-rod reciprocating mechanism is reduced, and the reciprocating balance design of the double-swing-rod reciprocating mechanism is realized.

However, the current double-swing-rod reciprocating mechanism is imperfect in reciprocating balance design, and still generates larger vibration in the use process, so that the use of the whole mechanical appliance is affected. Meanwhile, the existing double-swing-rod reciprocating mechanism is complex in structure, has small difficulty in the machining process and the assembling process, has high production cost, and is difficult to popularize and apply on a large scale.

Disclosure of Invention

The embodiment of the disclosure provides a double-swing-rod reciprocating mechanism, which has at least good stability, can effectively reduce vibration, thereby reducing abrasion and prolonging the service life of machinery.

According to some embodiments of the present disclosure, there is provided a dual swing rod reciprocating mechanism comprising: the swing rod shaft is provided with a first central axis; the main swing rod bearing is sleeved on the swing rod shaft; one end of the main swing rod is connected with the outer ring of the main swing rod bearing, and one end of the main swing rod is connected with the reciprocating rod; the reciprocating rod is provided with a second central axis, and the first central axis is parallel to the second central axis; the balance swing rod bearing is sleeved on the swing rod shaft; the balance swing rod comprises a bent rod end and a straight rod end, the bent rod end is connected with the outer ring of the balance swing rod bearing, the connection part of the bent rod end and the balance swing rod bearing is positioned on the connection line of the first central axis and the second central axis, the straight rod end is connected with a balance sleeve, and the balance sleeve is sleeved on the reciprocating rod; the motor is connected with the swing rod shaft and is used for driving the swing rod shaft to rotate around the first central axis; the motor drives the swing rod shaft to rotate around the first central axis, the main swing rod bearing drives the main swing rod to move along the direction parallel to the second central axis, the balance swing rod bearing drives the balance swing rod to move along the direction parallel to the second central axis, and the movement direction of the main swing rod is opposite to the movement direction of the balance swing rod; the reciprocating rod moves along the second central axis, the moving direction of the reciprocating rod is the same as the moving direction of the main swing rod, the balance sleeve moves along the second central axis, and the moving direction of the balance sleeve is the same as the moving direction of the balance swing rod.

In some embodiments, the dual swing rod reciprocating mechanism further comprises: the first sliding sleeve and the second sliding sleeve are oppositely arranged, the reciprocating rod penetrates through the first sliding sleeve and the second sliding sleeve, and the reciprocating rod can slide between the first sliding sleeve and the second sliding sleeve.

In some embodiments, a first sliding pin hole is provided on the first sliding sleeve, a second sliding pin hole is provided on the second sliding sleeve, and a bore of the first sliding pin hole is aligned with a bore of the second sliding pin hole.

In some embodiments, a third slide pin aperture is provided on the balance sleeve, and the bore of the third slide pin aperture is aligned with the bore of the first slide pin aperture, and the bore of the third slide pin aperture is aligned with the bore of the second slide pin aperture.

In some embodiments, the dual swing link reciprocating mechanism further comprises a connection block disposed on the reciprocating link, one end of the main swing link being connected to the connection block.

In some embodiments, the swing rod shaft comprises a first split shaft, a second split shaft and an axle center block, wherein the first split shaft and the second split shaft are symmetrically arranged at two sides of the axle center block, the diameter of the axle center block is larger than that of the first split shaft, and the diameter of the axle center block is larger than that of the second split shaft; the balance swing rod bearing is sleeved on the first split shaft, and the main swing rod bearing is sleeved on the second split shaft.

In some embodiments, the dual swing rod reciprocating mechanism further comprises a connecting sleeve, the connecting sleeve being connected to the second sliding sleeve.

In some embodiments, the balanced rocker bearing comprises a plurality of rows of ball rocker bearings.

In some embodiments, the primary rocker bearing comprises a plurality of rows of ball rocker bearings.

According to some embodiments of the present disclosure, another aspect of the embodiments of the present disclosure also provides a power tool including the dual swing rod reciprocating mechanism described above.

The technical scheme provided by the embodiment of the disclosure has at least the following advantages: in the double-swing-rod reciprocating mechanism provided by the embodiment of the disclosure, a main swing rod bearing and a balance swing rod bearing are arranged on a swing rod shaft, the main swing rod bearing is connected with a main swing rod, the main swing rod is connected with a reciprocating rod, the balance swing rod bearing is connected with a balance swing rod, and the balance swing rod is connected with a balance sleeve sleeved on the reciprocating rod. The motor is connected with the swing rod shaft, the motor drives the swing rod shaft to rotate, the main swing rod bearing and the balance swing rod bearing are driven to move, the main swing rod and the balance swing rod are driven to move, the main swing rod drives the reciprocating rod to slide, and the balance swing rod drives the balance sleeve to slide. In this way, in the process of the reciprocating rod, the vibration generated during the movement of the reciprocating rod is counteracted by the vibration generated by the balance sleeve, so that the reciprocating balance of the whole structure is realized. And moreover, the connection point of the balance swing rod and the balance swing rod bearing is arranged on the perpendicular line of the first central axis and the second central axis, so that the mechanical stability of the whole structure is improved, and the reciprocating balance effect is further improved.

Drawings

One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, which are not to be construed as limiting the embodiments unless specifically indicated otherwise; in order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the conventional technology, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort to those of ordinary skill in the art.

FIG. 1 is a schematic diagram of a dual swing rod reciprocating mechanism;

FIGS. 2-4 are side schematic views of the dual swing rod reciprocating mechanism of FIG. 1;

FIG. 5 is a schematic view of some of the structures of the balanced rocker bearing and balanced rocker of FIG. 1;

FIG. 6 is a schematic view of some of the structures of the swing link shaft of FIG. 1;

FIG. 7 is a schematic perspective view of a dual swing rod reciprocating mechanism provided in accordance with an embodiment of the present disclosure;

FIG. 8 is a schematic view of another perspective of the dual swing rod reciprocating mechanism of FIG. 7;

FIGS. 9 to 11 are schematic views of some structures of the swing link shaft of FIG. 7;

FIGS. 12-14 are schematic views of some of the balanced rocker bearing and balanced rocker of FIG. 7;

fig. 15 is a schematic perspective view of another alternate embodiment of the dual swing rod reciprocating mechanism of fig. 7.

Detailed Description

As known in the art, the design of the dual swing rod reciprocating mechanism needs to be improved.

Analysis shows that in the existing double-swing-rod reciprocating mechanism, in order to avoid collision of the main swing rod and the balance swing rod in the reciprocating motion, the main swing rod and the balance swing rod are generally arranged in a crossed and staggered mode, and the motion trail of the balance swing rod bearing are correspondingly changed. In order to fit the motion trail of the balance swing rod and the balance swing rod bearing, the shape of the swing rod shaft connected with the balance swing rod bearing needs to be correspondingly changed. In this way, the overall balance effect of the double-swing-rod reciprocating mechanism is destroyed, and the manufacturing and assembling difficulties of the swing rod shafts are increased.

Fig. 1 is a schematic structural view of a double swing rod reciprocating mechanism. Referring to fig. 1, the dual swing rod reciprocating mechanism 100 includes a swing rod shaft 101, and the swing rod shaft 101 has a first central axis 11. The double-swing-rod reciprocating mechanism 100 further comprises a main swing rod bearing 102, a main swing rod 112 and a reciprocating rod 122, wherein the main swing rod bearing 102 is sleeved on the swing rod shaft 101; one end of the main swing rod 112 is connected with the outer ring of the main swing rod bearing 102, the other end of the main swing rod 112 is connected with the reciprocating rod 122, the reciprocating rod 122 is provided with a second central axis 12, and the first central axis 11 is parallel to the second central axis 12. The double-swing-rod reciprocating mechanism 100 further comprises a balance swing rod bearing 103, a balance swing rod 113 and a balance sleeve 123, wherein the balance swing rod bearing 103 is sleeved on the swing rod shaft 101; one end of the balance swing rod 113 is connected with the outer ring of the balance swing rod bearing 103, the other end of the balance swing rod 113 is connected with the balance sleeve 123, and the balance sleeve 123 is sleeved on the reciprocating rod 122. The dual swing rod reciprocating mechanism 100 further includes a first sliding sleeve 104 and a second sliding sleeve 114, wherein a first sliding pin hole (not shown in the figure) is provided on the first sliding sleeve 104, a second sliding pin hole (not shown in the figure) is provided on the second sliding sleeve 114, and sliding pins (not shown in the figure) are provided in the first sliding pin hole and the second sliding pin hole, and penetrate through the balance sleeve 123.

Fig. 2 and 3 are schematic side structures of the dual swing rod reciprocating mechanism 100 of fig. 1 in a reciprocating motion, and fig. 4 is a schematic side structure of another dual swing rod reciprocating mechanism 100 of fig. 1. Referring to fig. 2,3 and 4, in the double pendulum rod reciprocating mechanism 100, in order to avoid collision of the balance pendulum rod 113 with the main pendulum rod 112 during the reciprocating motion, when the balance pendulum rod bearing 103 and the balance pendulum rod 113 are provided, the center lines of the balance pendulum rod bearing 103 and the balance pendulum rod 113 have an angle a with the center lines of the main pendulum rod bearing 102 and the main pendulum rod 112. Fig. 5 is a schematic diagram of some structures of the balance swing rod bearing and the balance swing rod in fig. 1, from left to right, a front view, a top view, and a perspective schematic diagram of the balance swing rod bearing 103 and the balance swing rod 113, respectively. Fig. 6 is a schematic view of some structures of the swing rod shaft in fig. 1, from left to right, which are respectively a left view, a top view, a right view, and a front view of the swing rod shaft 100. It can be found that, in order to compress the axial installation distance of the main swing rod bearing 102 and the balance swing rod bearing 103 as much as possible, the main swing rod bearing 102 and the balance swing rod bearing 103 will not collide in the process of swinging oppositely, the swing rod shaft 101 is designed with an angle b for normally driving the double swing rods, and the part of the swing rod shaft 101 connected with the balance swing rod bearing 103 is also provided with an angle a in order to adapt to the movement track of the balance swing rod bearing 103. Therefore, when the swing rod shaft 101 is manufactured, at least five numerical control machining centers are needed for manufacturing equipment, the machining difficulty is greatly improved, and the production is difficult to realize.

In the related art, in order to compress the axial installation distance of the main swing rod bearing 102 and the balance swing rod bearing 103, the balance design of the double-swing-rod reciprocating mechanism 100 has flaws, the whole mechanism is easy to vibrate in the process of reciprocating motion, and the swing rod shaft 101 designed based on the balance swing rod bearing 103 has the advantages of complex structure, high processing difficulty, high manufacturing requirement, difficult realization of common processing equipment and difficult realization of productization.

The embodiment of the disclosure provides a double-swing-rod reciprocating mechanism, which comprises a motor and a swing rod shaft driven by the motor, wherein a main swing rod bearing and a balance swing rod bearing are sleeved on the swing rod shaft, the main swing rod bearing is connected with a main swing rod, and the main swing rod is connected with a reciprocating rod. When the motor drives the swing rod shaft to rotate, the main swing rod bearing and the main swing rod are driven to move, so that the reciprocating rod is driven to reciprocate. The balance swing rod bearing is connected with the balance swing rod, the bent rod end of the balance swing rod is connected with the outer ring of the balance swing rod bearing, the connecting position of the bent rod end and the balance swing rod bearing is positioned on the connecting line of the first central axis and the second central axis, the straight rod end is connected with the balance sleeve, and the balance sleeve is sleeved on the reciprocating rod. When the motor drives the swing rod shaft to rotate, the balance swing rod bearing and the balance swing rod are driven by the swing rod shaft to move, the balance sleeve is driven by the balance swing rod to reciprocate, and the moving direction of the balance sleeve is opposite to the moving direction of the reciprocating rod. The whole double-swing-rod reciprocating mechanism has good balance in the motion process, reduces the vibration intensity in the reciprocating motion process, corrects the shape of the swing rod shaft and is easy to process.

Embodiments of the present disclosure will be described in detail below with reference to the attached drawings. However, those of ordinary skill in the art will understand that in the various embodiments of the present disclosure, numerous technical details have been set forth in order to provide a better understanding of the present disclosure. The technical solutions claimed in the present disclosure can be implemented without these technical details and with various changes and modifications based on the following embodiments.

In the description of embodiments of the present application, the technical terms "first," "second," and the like are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like should be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to specific circumstances.

Fig. 7 is a schematic perspective view of a dual swing rod reciprocating mechanism according to an embodiment of the present disclosure.

Referring to fig. 7, the disclosed embodiment provides a dual swing rod reciprocating mechanism 200 including a swing rod shaft 201, the swing rod shaft 201 having a first central axis 21. The double-swing-rod reciprocating mechanism 200 further comprises a main swing rod bearing 202, a main swing rod 212 and a reciprocating rod 222, wherein the main swing rod bearing 202 is sleeved on the swing rod shaft 201; one end of the main swing rod 212 is connected with the outer ring of the main swing rod bearing 202, the other end of the main swing rod 212 is connected with the reciprocating rod 222, the reciprocating rod 222 is provided with a second central axis 22, and the first central axis 21 is parallel to the second central axis 22. The double-swing-rod reciprocating mechanism 200 further comprises a balance swing rod bearing 203, a balance swing rod 213 and a balance sleeve 223, wherein the balance swing rod bearing 203 is sleeved on the swing rod shaft 201; the balance swing rod 213 comprises a bent rod end 23 and a straight rod end 24, the bent rod end 23 is connected with the outer ring of the balance swing rod bearing 203, the connection part of the bent rod end 23 and the balance swing rod bearing 203 is located on the connection line of the first central axis 21 and the second central axis 22, the straight rod end 24 is connected with a balance sleeve 223, and the balance sleeve 223 is sleeved on the reciprocating rod 222. The dual wobble rod reciprocating mechanism 200 further includes a motor 204, the motor 204 being coupled to the wobble rod shaft 201, and the motor 204 being configured to drive the wobble rod shaft 201 to rotate about the first central axis 21.

Fig. 8 is a schematic perspective view of another alternate dual swing rod reciprocating mechanism of fig. 7.

Referring to fig. 7 and 8, in which the motor 204 drives the swing rod shaft 201 to rotate around the first central axis 21, the main swing rod bearing 202 drives the main swing rod 212 to move in a direction parallel to the second central axis 22, the balance swing rod bearing 203 drives the balance swing rod 213 to move in a direction parallel to the second central axis 22, and the movement direction of the main swing rod 212 is opposite to the movement direction of the balance swing rod 213; the reciprocating lever 222 moves along the second central axis 22, the reciprocating lever 222 and the main swing link 212 move in the same direction, and the balance sleeve 223 moves along the second central axis 22, and the balance sleeve 223 moves in the same direction as the balance swing link 213.

The swing rod shaft 201 is connected with the motor 204, and the motor 204 drives the swing rod shaft 201 to rotate around the first central axis 21, and the swing rod shaft 201 drives the main swing rod bearing 202 and the balance swing rod bearing 203 sleeved on the swing rod shaft 201 to move when rotating, so that the whole double-swing-rod reciprocating mechanism 200 is driven to move. It will be appreciated that motor 204 may also be coupled to wobble shaft 201 via a transmission mechanism that transmits power to wobble shaft 201 to drive wobble shaft 201 in rotation. The structural type of the transmission mechanism can be various and is within the protection scope of the patent.

In some embodiments, the dual swing rod reciprocating mechanism 200 may further include a first sliding sleeve 205 and a second sliding sleeve 215. The first runner 205 is disposed opposite the second runner 215. The reciprocating bar 222 may be disposed between the first sliding sleeve 205 and the second sliding sleeve 215, and the reciprocating bar 222 may slide between the first sliding sleeve 205 and the second sliding sleeve 215. The first sliding sleeve 205 and the second sliding sleeve 215 are used for supporting the reciprocating rod 222, so that the reciprocating rod 222 is prevented from slipping when in reciprocating motion, the reciprocating motion process of the double-swing-rod reciprocating mechanism 200 is controllable, and the workload of a designer can be reduced. In some embodiments, the first sliding sleeve 205 may be connected with other connection mechanisms and/or fixing mechanisms, so as to enable connection and/or fixing of the dual swing link reciprocating mechanism 200 with other mechanisms, so as to combine and use the dual swing link reciprocating mechanism 200 with other mechanisms. In some embodiments, the second sliding sleeve 215 may also be connected with other connecting mechanisms and/or fixing mechanisms, so as to enable the connection and/or fixing of the dual swing link reciprocating mechanism 200 with other mechanisms, so as to combine and utilize the dual swing link reciprocating mechanism 200 with other mechanisms.

In some embodiments, a first slide pin hole 225 is provided on the first slide sleeve 205 and a second slide pin hole 235 is provided on the second slide sleeve 215, with the bore of the first slide pin hole 225 aligned with the bore of the second slide pin hole 235. The double pendulum rod reciprocating mechanism further comprises a sliding pin (not shown in the figures). The sliding pin is inserted between a first sliding pin hole 225 on the first sliding sleeve 205 and a second sliding pin hole 235 on the second sliding sleeve 215.

In some embodiments, a third sliding pin hole 233 is provided on the balancing sleeve 223, and the bore of the third sliding pin hole 233 is aligned with the bore of the first sliding pin hole 225, and the bore of the third sliding pin hole 233 is also aligned with the bore of the second sliding pin hole 235. The sliding pin is further inserted into the third sliding pin hole 233, and the balance sleeve 223 can slide on the sliding pin. The sliding pin is used for guiding the balance sleeve so as to maintain the track of the balance sleeve in the reciprocating motion process unchanged and improve the connection compactness of each structure in the double-swing-rod reciprocating mechanism 200.

In some embodiments, two first sliding pin holes 225 may be disposed on the first sliding sleeve 205, and the two first sliding pin holes 225 may be symmetrically disposed on both sides of the first sliding sleeve 205 with respect to the second central axis 22. Two second sliding pin holes 235 may be disposed on the second sliding sleeve 215, and the two second sliding pin holes 235 may be symmetrically disposed on two sides of the second sliding sleeve 215 with respect to the second central axis 22. The two first sliding pin holes 225 on the first sliding sleeve 205 correspond to the two second sliding pin holes 235 on the second sliding sleeve 215, so as to facilitate the insertion of the sliding pins. The symmetrically arranged sliding pins help to maintain balance of the balance sleeve 223 during movement, further improve balance of the dual swing rod reciprocating mechanism 200, and reduce vibration of the dual swing rod reciprocating mechanism 200 during reciprocating movement.

When the swing rod shaft 201 rotates around the first central axis 21, the main swing rod bearing 202 is driven to move, so that the main swing rod 212 is driven to move, and the reciprocating rod 222 is driven to slide between the first sliding sleeve 205 and the second sliding sleeve 215. Rotation of the rocker shaft 201 also drives the balance rocker bearing 203 to move, thereby driving the balance rocker 213 to move, driving the balance sleeve 223 to slide on the sliding pin. The reciprocating lever 222 is opposite to the movement direction of the balance sleeve 223, thereby achieving the balance of the double swing lever reciprocating mechanism 200 during the reciprocating motion.

Fig. 9 to 11 are some schematic structural views of the swing link shaft 201 in fig. 7. Fig. 9 shows a schematic front view of the swing rod shaft 201, fig. 10 shows a schematic front view of the swing rod shaft 201, and fig. 11 shows a schematic left view, a schematic top view and a schematic right view of the swing rod shaft 201 from left to right.

In some embodiments, referring to fig. 9, the swing link shaft 201 may include a first split shaft 211, a second split shaft 221, and a hub block 231. When driven by the motor 204, the swing link shaft 201 rotates about the first central axis 21. The first split shaft 211 and the second split shaft 221 are symmetrically arranged at two sides of the shaft center block 231, the diameter of the shaft center block 231 is larger than that of the first split shaft 211, and the diameter of the shaft center block 231 is also larger than that of the second split shaft 221. The balance swing rod bearing 203 is sleeved on the first split shaft 211, and the main swing rod bearing 202 is sleeved on the second split shaft 221. The diameter of the first split shaft 211 may be correspondingly designed according to the diameter of the inner ring of the balance swing rod bearing 203, and the diameter of the second split shaft 221 may be correspondingly designed according to the diameter of the inner ring of the main swing rod bearing 202. During the reciprocating motion, the axle center block 231 can isolate the main swing rod bearing 202 and the balance swing rod bearing 203, so that collision between the main swing rod bearing 202 and the balance swing rod bearing 203 is avoided. The axle center block 231 also plays a limiting role, and can limit the movement limit positions of the reciprocating rod 222 and the balance sleeve 223 by limiting the movement limit positions of the main swing rod bearing 202 and the balance swing rod bearing 203, so as to reduce the design difficulty of the whole structure.

In some embodiments, referring to fig. 10 and 11, the swing rod shaft 201 may be an integral structure, that is, the first split shaft 211, the second split shaft 221, and the shaft center block 231 are integrally formed by the same substrate, which is beneficial to improving the manufacturing efficiency of the swing rod shaft 201, and is also beneficial to improving the yield of the dual swing rod reciprocating mechanism 200 by avoiding the failure of the swing rod shaft 201 caused by the damage of the connecting piece.

In some embodiments, an angle c may be provided between the first split shaft 211 and the second split shaft 221 to facilitate balancing the movement of the pendulum bearing 203 with the main pendulum bearing 202 without collision.

In some embodiments, wobble shaft 201 may be manufactured using a three-axis numerically controlled machine tool. The three-axis numerical control machine tool is one of the common types in the computer numerical control machine tool, and when the three-axis numerical control machine tool processes the swing rod shaft 201, a rotary cutter moving along the X axis, the Y axis and the Z axis is used for processing the workpiece of the swing rod shaft 201, so that the three-axis numerical control machine tool has low overall cost and higher precision, is suitable for large-scale processing and manufacturing, and is beneficial to promoting the productization and commercialization of the double-swing-rod reciprocating mechanism 200.

In use, the swing rod shaft 201 is generally subjected to alternating stress, so as to reduce the probability of breakage of the swing rod shaft 201 due to the alternating stress, in some embodiments, the swing rod shaft 201 may be made of a material with certain toughness and better fatigue resistance, for example, the swing rod shaft 201 may be made of high-quality carbon structural steel with moderate carbon content.

In some embodiments, a buffer may be provided on hub block 231. The buffer portion may be provided at a position on the axial block 231 where it collides with the main swing link bearing 202, and the buffer portion may be provided at a position on the axial block 231 where it collides with the balance swing link bearing 203. In some embodiments, the buffer may be made of an elastic material, which may facilitate reducing the impact of the main rocker bearing 202 and/or the balance rocker bearing 203 on the axle block 231, and may facilitate extending the service life of the rocker shaft 201, thereby extending the service life of the dual-rocker reciprocating mechanism 200 and reducing maintenance frequency. In addition, the buffer part can also play a role in silencing and damping, so that noise generated in the motion of the double-swing-rod reciprocating mechanism 200 is reduced, and the use scene of the double-swing-rod reciprocating mechanism 200 is expanded.

The main swing rod bearing 202 is sleeved on the swing rod shaft 201, the outer ring of the main swing rod bearing 202 is connected with one end of the main swing rod 212, and the other end of the main swing rod 212 is connected with the reciprocating rod 222.

In some embodiments, the main rocker bearing 202 may include a single row ball rocker bearing, a double row ball rocker bearing, a multiple row ball rocker bearing, a single row cylindrical roller rocker bearing, a double row cylindrical roller rocker bearing, a multiple row cylindrical roller rocker bearing, a self-aligning roller rocker bearing, and the like.

In some embodiments, the primary swing link 212 is a straight bar structure. The connection between the main swing rod 212 and the main swing rod bearing 202 is located on the connection line between the first central axis 21 and the second central axis 22, when the double-swing-rod reciprocating mechanism 200 reciprocates, the main swing rod 212 always moves in the same plane, so that the deformation of the reciprocating motion is avoided, the controllability of the reciprocating motion is improved, and the reciprocating balance effect of the double-swing-rod reciprocating mechanism 200 is improved.

When the main swing link bearing 202 drives the main swing link 212 to move in a direction away from the balance swing link 213, the reciprocating lever 222 is driven by the main swing link 212 to slide along the second central axis 22. When the main swing link bearing 202 drives the main swing link 212 to move in a direction approaching the balance swing link 213, the reciprocating lever 222 is driven by the main swing link 212 to slide along the second central axis 22.

In some embodiments, the main swing link 212 may further be provided with a connection block 206, where the connection block 206 is disposed on the reciprocating lever 222, and one end of the main swing link 212 is connected to the connection block 206, and the connection block 206 is used to connect the main swing link 212 and the reciprocating lever 222. The connection block 206 may be sleeved on the reciprocating rod 222, where a mounting hole is provided on the connection block 206, and one end of the main swing rod 212 is installed in the mounting hole so as to be connected with the reciprocating rod 222.

In some embodiments, a connecting hole penetrating through the thickness of the reciprocating lever 222 may be further disposed on the reciprocating lever 222, so that the reciprocating lever 222 can be combined with other transmission mechanisms, thereby widening the application range of the dual swing link reciprocating mechanism 200.

When the swing rod shaft 201 is driven to rotate by the motor 204, the balance swing rod bearing 203 on the swing rod shaft 201 moves along with the swing rod shaft, so as to drive the balance swing rod 213 to move, and the balance swing rod 213 drives the balance sleeve 223 to reciprocate.

Fig. 12 to 14 are schematic structural views of the balance swing rod bearing and the balance swing rod in fig. 7, fig. 12 is a schematic side structural view of the balance swing rod bearing and the balance swing rod, fig. 13 is a schematic perspective structural view of the balance swing rod bearing and the balance swing rod, and fig. 14 is a schematic top structural view of the balance swing rod bearing and the balance swing rod.

Referring to fig. 12 and 13, the balance swing rod 213 includes a bent rod end 23 and a straight rod end 24, one end of the bent rod end 23 is connected to the straight rod end 24, and the other end of the bent rod end 23 is connected to the outer ring of the balance swing rod bearing 203. In order to avoid collision between the balance swing rod 213 and the main swing rod 212 in the process of reciprocating motion, an angle d is arranged between the central line of the straight rod end 24 and the vertical central line of the balance swing rod bearing 203, and the range of the angle d can be between 20 degrees plus or minus 10 degrees. It can be understood that in the design process of the actual product, the d angle needs to be correspondingly designed according to the relative positions and the respective sizes of the swing rod shaft 201, the main swing rod 212, the main swing rod bearing 202, the balance swing rod 213, the balance swing rod bearing 203, the reciprocating rod 222 and the balance sleeve 223, without affecting the protection of the present patent to the present technical scheme.

Referring to fig. 14, the bent rod end 23 is located in the same plane as the straight rod end 24 and the balance swing rod bearing 203 so as to control the movement direction of the balance swing rod 213 not to be deviated.

In some embodiments, the diameter of the bent rod end 23 may be larger than that of the straight rod end 24, which is beneficial to enhancing the connection strength between the balance swing rod 213 and the balance swing rod bearing 203 and avoiding the breakage between the balance swing rod 213 and the balance swing rod bearing 203 due to insufficient connection strength.

In some embodiments, the balanced rocker bearing 203 may include a single row ball rocker bearing, a double row ball rocker bearing, a multiple row ball rocker bearing, a single row cylindrical roller rocker bearing, a double row cylindrical roller rocker bearing, a multiple row cylindrical roller rocker bearing, a self-aligning roller rocker bearing, and the like.

Fig. 15 is a schematic perspective view of another alternate embodiment of the dual swing rod reciprocating mechanism of fig. 7.

Referring to fig. 15, a balance swing rod bearing 203 is sleeved on a swing rod shaft 201, and when the swing rod shaft 201 is driven to rotate by a motor 204, the balance swing rod bearing 203 is driven to move by the swing rod shaft 201, and thus, the balance swing rod 213 is driven to move by the balance swing rod bearing 203. In order to avoid collision between the balance swing link 213 and the main swing link 212 during movement, an angle d is formed between the center line of the straight rod end 24 of the balance swing link 213 and the center line of the main swing link 212. In order to avoid the deviation of the motion track of the balance swing rod bearing 203 due to the influence of the angle d, the bent rod end 23 of the balance swing rod 213 is connected with the outer ring of the balance swing rod bearing 203, and the connection position of the bent rod end 23 and the outer ring is located on the connection line of the first central axis 21 and the second central axis 22, that is, the connection position of the bent rod end 23 and the outer ring is located at the intersection position of the projection of the main swing rod 212 on the balance swing rod bearing 203 and the outer ring of the balance swing rod bearing 203. In this way, in the process of the reciprocating motion of the double-swing-rod reciprocating mechanism 200, the motion tracks of the main swing rod bearing 202 and the balance swing rod bearing 203 are located on the same plane, and always keep synchronous, so that the overall motion balance of the double-swing-rod reciprocating mechanism 200 is improved, and the vibration during the motion is reduced.

Referring to fig. 11 again, the movement of the main swing rod bearing 202 and the movement of the balance swing rod bearing 203 are kept synchronous, the design work of the first split shaft 211 and the second split shaft 221 can be reduced, the deflection of the first split shaft 211 in the space structure is not considered, and the processing and manufacturing difficulty of the swing rod shaft 201 can be effectively reduced, so that the double-swing-rod reciprocating mechanism 200 can be widely popularized and applied.

In some embodiments, the balancing sleeve 223 may have a greater mass. The balance sleeve 223 having a large mass can balance the stress of the entire mechanism when the double swing rod reciprocating mechanism 200 reciprocates.

In some embodiments, the connection between the balance sleeve 223 and the straight rod end 24 may be located at an end of the balance sleeve 223 far from the second sliding sleeve 215, which is helpful for increasing the movement amplitude of the balance swing rod 213, increasing the sliding distance of the balance sleeve 223, optimizing the movement center of gravity of the dual swing rod reciprocating mechanism 200, and reducing the vibration of the reciprocating rod 222 caused by uneven stress at two ends, so as to further improve the reciprocating balance of the dual swing rod reciprocating mechanism 200.

In some embodiments, the dual swing rod reciprocating mechanism 200 may further comprise a connection sleeve 207, and the connection sleeve 207 may be connected to the second sliding sleeve 215. Additional external gearing and/or fastening mechanisms may be combined with the dual swing rod reciprocating mechanism 200 by connecting with the connection sleeve 207 to achieve additional functionality. The connecting sleeve 207 may be provided with a screw hole for connection, a connection guide rod or a gear, etc. The double-swing-rod reciprocating mechanism 200 can be linked with other mechanisms through the combined installation of nuts and screw holes, the combined installation of clamps and connecting guide rods or the combined assembly of gears and gears.

The following will describe the movement of the double swing rod reciprocation mechanism 200.

The motor 204 may directly drive the swing rod shaft 201 to rotate around the first central axis 21, and the motor 204 may also drive the swing rod shaft 201 to rotate around the first central axis 21 through a transmission mechanism. When the pendulum shaft 201 rotates about the first central axis 21, the main pendulum bearing 202 and the balancing pendulum bearing 203 on the pendulum shaft 201 are also correspondingly driven in motion. Wherein, the balance swing rod bearing 203 is sleeved on the first split shaft 211 of the swing rod shaft 201, the main swing rod bearing 202 is sleeved on the second split shaft 221 of the swing rod shaft 201, and an axle center block 231 is arranged between the first split shaft 211 and the second split shaft 221 to avoid collision between the main swing rod bearing 202 and the balance swing rod bearing 203. The first split shaft 211, the second split shaft 221 and the axle center block 231 are arranged on the same plane, and the motion tracks of the main swing rod bearing 202 and the balance swing rod bearing 203 are also on the same plane, so that the reciprocating balance design of the double-swing-rod reciprocating mechanism 200 is beneficial to optimization. An angle c is provided between the first split shaft 211 and the second split shaft 221, and when the swing rod shaft 201 rotates around the first central axis 21, the balance swing rod bearing 203 and the main swing rod bearing 202 reciprocate up and down on one plane in space. The balance swing link 213 connected to the balance swing link bearing 203 also reciprocates up and down correspondingly, and the main swing link 212 connected to the main swing link bearing 202 also reciprocates up and down correspondingly. The main swing link 212 is connected to the reciprocating lever 222, and the moving direction of the reciprocating lever 222 is along the second central axis 22. When the main swing rod 212 is driven to move by the main swing rod bearing 202, the reciprocating rod 222 makes a reciprocating sliding motion along the second central axis 22. The balance swing rod 213 is connected with a balance sleeve 223, the balance sleeve 223 is sleeved on the reciprocating rod 222, and the movement direction of the balance sleeve 223 is also along the second central axis 22. When the balance swing rod 213 is driven to move by the balance swing rod bearing 203, the balance sleeve 223 makes a reciprocating sliding motion along the second central axis 22. And the movement direction of the reciprocating lever 222 is opposite to the movement direction of the balance sleeve 223 due to the angle c.

The balance sleeve 223 is disposed between the first sliding sleeve 205 and the second sliding sleeve 215, and the reciprocating rod 222 is disposed through the second sliding sleeve 215. The first sliding sleeve 205 and the second sliding sleeve 215 may be coupled to the housing. And the bores of the first slide pin hole 225 on the first slide sleeve 205, the third slide pin hole 233 on the balance sleeve 223, and the second slide pin hole 235 on the second slide sleeve 215 are aligned, and the slide pin is inserted into the first slide pin hole 225, the third slide pin hole 233, and the second slide pin hole 235, and the balance sleeve 235 slides on the slide pin. When the reciprocating lever 222 slides in a direction away from the first sliding sleeve 205 and the second sliding sleeve 215, the balance sleeve 223 slides on the sliding pin in a direction away from the second sliding sleeve 215 until the balance sleeve 223 abuts against the first sliding sleeve 205, and at this time, both the reciprocating lever 222 and the balance sleeve 223 are at the limit positions. When the reciprocating lever 222 slides in a direction approaching the first sliding sleeve 205 and the second sliding sleeve 215, the balance sleeve 223 slides on the sliding pin in a direction approaching the second sliding sleeve 215 until the balance sleeve 223 abuts against the end of the main swing link 212, and at this time, the reciprocating lever 222 and the balance sleeve 223 are both at the other limit position. By the continuous rotation of the swing rod shaft 201, the balance sleeve 223 and the reciprocating rod 222 continuously reciprocate between two extreme positions, thereby realizing the reciprocating motion of the entire double-swing-rod reciprocating mechanism 200.

The double-swing-rod reciprocating mechanism 200 provided in the above disclosed embodiment includes a swing rod shaft 201 and a motor 204, the swing rod shaft 201 has a first central axis 21, the motor 204 is connected to the swing rod shaft 201, and the motor 204 is used for providing power for rotating the swing rod shaft 201 around the first central axis 21. The dual swing rod reciprocating mechanism 200 further includes a main swing rod bearing 202, a main swing rod 212, and a reciprocating rod 222, the reciprocating rod 222 having a second central axis 22, the first central axis 21 being parallel to the second central axis 22, and the reciprocating rod 222 reciprocating along the second central axis 22 when the dual swing rod reciprocating mechanism 200 reciprocates. The reciprocating lever 222 is connected with one end of the main swing rod 212, the other end of the main swing rod 212 is connected with the outer ring of the main swing rod bearing 202, the main swing rod bearing 202 is sleeved on the swing rod shaft 201, and the movement of the swing rod shaft 201 is transmitted to the reciprocating lever 222 through the main swing rod bearing 202 and the main swing rod 212. The double-swing-rod reciprocating mechanism 200 further comprises a balance swing rod bearing 203, a balance swing rod 213 and a balance sleeve 223, when the double-swing-rod reciprocating mechanism 200 reciprocates, the balance sleeve 223 reciprocates along the second central axis 22, and the movement direction of the balance sleeve 223 is opposite to the movement direction of the reciprocating rod 222, so as to maintain the gravity center of the double-swing-rod reciprocating mechanism 200 stable, avoid the vibration and even tilting of the double-swing-rod reciprocating mechanism 200, and realize the mechanical balance of the whole structure in the reciprocating motion. The balance swing rod 213 comprises a bent rod end 23 and a straight rod end 24, the balance sleeve 223 is connected with the straight rod end 24, the bent rod end 23 is connected with the outer ring of the balance swing rod bearing 203, and the connection part of the bent rod end 23 and the balance swing rod bearing 203 is positioned on the connection line of the first central axis 21 and the second central axis 22, so that the mechanical stability of the whole structure is improved, and the balance effect of the double-swing-rod reciprocating mechanism 200 can be further improved. The balance swing rod bearing 203 is sleeved on the swing rod shaft 201, and the movement of the swing rod shaft 201 is transmitted to the balance sleeve 223 through the balance swing rod bearing 203 and the balance swing rod 213. Wherein the motor 204 drives the swing rod shaft 201 to rotate around the first central axis, the main swing rod bearing 202 drives the main swing rod 212 to move along the direction parallel to the second central axis 22, and the balance swing rod bearing 203 drives the balance swing rod 213 to move along the direction parallel to the second central axis 22; the reciprocating lever 222 moves along the second central axis 22, the direction in which the reciprocating lever 222 moves is the same as the direction in which the main swing link 212 moves, and the balance sleeve 223 moves along the second central axis 22, and the direction in which the balance sleeve 223 moves is the same as the direction in which the balance swing link 213 moves. The whole double-swing-rod reciprocating mechanism 200 has good mechanical stability, can realize motion balance in the reciprocating motion process, further reduces vibration, is beneficial to reducing the abrasion of the mechanism, prolongs the service life of the mechanism, has simple and easy-to-manufacture structures, has low production cost, and is beneficial to realizing large-scale popularization and application.

Accordingly, another embodiment of the present disclosure also provides a power tool including the dual swing rod reciprocating mechanism 200 provided in the foregoing embodiment. The power tool according to another embodiment of the present disclosure will be described in detail below, and the same or corresponding parts as those of the previous embodiment may be referred to for the corresponding description of the previous embodiment, which will not be described in detail below.

The electric tool may include an electric reciprocating saw, a fascia gun, a shearing machine, a punching machine, a sawing machine, an engine, and the like, and the reciprocating motion of the double-swing-rod reciprocating mechanism 200 can be transmitted to other structures, such as a saw blade, a massage ball, a shearing rolling piece, a punching structure, a piston structure, and the like, through the installation combination of the double-swing-rod reciprocating mechanism 200 to other structures in the electric tool, thereby realizing various applications.

The above disclosed embodiments provide a power tool including the dual swing rod reciprocating mechanism 200 provided in the foregoing embodiments. In the double-swing-rod reciprocating mechanism 200, the mechanical stability of the double-swing-rod reciprocating mechanism 200 is improved by the cooperation of the main swing rod 212 and the balance swing rod 213, and in the reciprocating motion process, the double-swing-rod reciprocating mechanism 200 generates smaller vibration, the collision degree is also lighter, the abrasion degree is lower, the service life of the electric tool is longer, and the electric tool has good economical efficiency. In addition, in the double-swing-rod reciprocating mechanism 200, the connection part of the bent rod end 23 of the balance swing rod 213 and the balance swing rod bearing 203 is located on the connection line of the first central axis 21 and the second central axis 22, so that the whole structure of the double-swing-rod reciprocating mechanism 200 is well optimized, the manufacturing difficulty of parts is reduced, and the cost of the electric tool is reduced, thereby promoting the commercialization and commercialization of the electric tool.

It will be understood by those of ordinary skill in the art that the foregoing embodiments are specific examples of implementing the disclosure, and that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and the scope of the disclosure should therefore be assessed as that of the appended claims.

Claims (10)

1. A dual swing rod reciprocating mechanism, comprising:

a swing rod shaft having a first central axis;

The main swing rod bearing is sleeved on the swing rod shaft; one end of the main swing rod is connected with the outer ring of the main swing rod bearing, and one end of the main swing rod is connected with the reciprocating rod; the reciprocating lever has a second central axis, and the first central axis is parallel to the second central axis;

The balance swing rod bearing is sleeved on the swing rod shaft; the balance swing rod comprises a bent rod end and a straight rod end, the bent rod end is connected with the outer ring of the balance swing rod bearing, the connection part of the bent rod end and the balance swing rod bearing is positioned on the connection line of the first central axis and the second central axis, the straight rod end is connected with the balance sleeve, and the balance sleeve is sleeved on the reciprocating rod;

The motor is connected with the swing rod shaft and is used for driving the swing rod shaft to rotate around the first central axis;

The motor drives the swing rod shaft to rotate around the first central axis, the main swing rod bearing drives the main swing rod to move along the direction parallel to the second central axis, the balance swing rod bearing drives the balance swing rod to move along the direction parallel to the second central axis, and the movement direction of the main swing rod is opposite to the movement direction of the balance swing rod; the reciprocating rod moves along the second central axis, the moving direction of the reciprocating rod is the same as the moving direction of the main swing rod, the balance sleeve moves along the second central axis, and the moving direction of the balance sleeve is the same as the moving direction of the balance swing rod.

2. The dual swing rod reciprocating mechanism according to claim 1, further comprising:

The sliding device comprises a first sliding sleeve and a second sliding sleeve, wherein the first sliding sleeve and the second sliding sleeve are oppositely arranged, the reciprocating rod penetrates through the first sliding sleeve and the second sliding sleeve, and the reciprocating rod can slide between the first sliding sleeve and the second sliding sleeve.

3. The dual swing rod reciprocating mechanism according to claim 2, wherein a first sliding pin bore is provided on said first sliding sleeve and a second sliding pin bore is provided on said second sliding sleeve, the bore of said first sliding pin bore being aligned with the bore of said second sliding pin bore.

4. A dual swing rod reciprocating mechanism according to claim 3, wherein a third slide pin bore is provided on said balance sleeve, and wherein a bore of said third slide pin bore is aligned with a bore of said first slide pin bore, and wherein a bore of said third slide pin bore is aligned with a bore of said second slide pin bore.

5. The dual swing rod reciprocating mechanism according to claim 1, further comprising a connection block provided on the reciprocating rod, one end of the main swing rod being connected to the connection block.

6. The double-swing-rod reciprocating mechanism according to claim 1, wherein the swing rod shaft comprises a first split shaft, a second split shaft and an axle center block, the first split shaft and the second split shaft are symmetrically arranged on two sides of the axle center block, the diameter of the axle center block is larger than that of the first split shaft, and the diameter of the axle center block is larger than that of the second split shaft; the balance swing rod bearing is sleeved on the first split shaft, and the main swing rod bearing is sleeved on the second split shaft.

7. The dual swing rod reciprocating mechanism according to claim 2, further comprising a connecting sleeve connected to said second sliding sleeve.

8. The dual swing link reciprocating mechanism according to claim 1, wherein said balanced swing link bearing comprises a plurality of rows of ball swing link bearings.

9. The dual swing link reciprocating mechanism according to claim 1, wherein said main swing link bearing comprises a plurality of rows of ball swing link bearings.

10. A power tool comprising a double swing rod reciprocating mechanism as claimed in claims 1 to 7.