CN107838880B

CN107838880B - Reciprocating power tool

Info

Publication number: CN107838880B
Application number: CN201610838153.2A
Authority: CN
Inventors: 朱伯元; 王良均; 吴爱民
Original assignee: Positec Power Tools Suzhou Co Ltd
Current assignee: Positec Power Tools Suzhou Co Ltd
Priority date: 2016-09-21
Filing date: 2016-09-21
Publication date: 2023-11-07
Anticipated expiration: 2036-09-21
Also published as: CN107838880A

Abstract

The invention relates to a reciprocating power tool for driving a working head to reciprocate to process a workpiece, which comprises a motor and a transmission mechanism, wherein the motor drives the working head to reciprocate through the transmission mechanism, the transmission mechanism comprises a reciprocating rod assembly, and the reciprocating rod assembly comprises a reciprocating rod and a reinforcing structure arranged on the reciprocating rod. Above-mentioned reciprocating power tool, because reciprocating lever subassembly includes reciprocating lever and reinforcement structure, consequently the reciprocating lever can adopt the material that density is less to avoided the vibrations that bring because weight is too big in the course of the work, thereby avoided the user to feel great vibrations when using reciprocating power tool, improved user's use experience, and less machine vibrations are to the damage of each part. The density of the reinforcing structure is larger than that of the reciprocating rod, so that the weight is reduced, the reciprocating rod assembly is ensured to have enough rigidity and not to be bent in the running process, and the weight is reduced, and meanwhile, the good stability and the service life are ensured.

Description

Reciprocating power tool

Technical Field

The invention relates to the field of machining equipment, in particular to a reciprocating power tool.

Background

The reciprocating cutting tool, such as a reciprocating saw, is a common electric tool, is widely applied to industries of automobiles, ships, wood forms, decoration, leather and the like, can be used for cutting different materials of wood, metal, plastic, rubber and the like, and has wide applicability. The reciprocating saw usually adopts a motor as a driving device, the motor rotates at a high speed, and then a working head is driven to reciprocate through a transmission device to achieve the cutting purpose.

At present, due to the structural defect of the transmission structure of the reciprocating power tool, the transmission structure can generate larger vibration in the process, so that the use experience of a user is affected, and unnecessary trouble is caused to the user.

Disclosure of Invention

Based on this, it is necessary to provide a reciprocating power tool that avoids the generation of vibrations or that has small vibrations, in view of the problem of the transmission structure of the reciprocating power tool generating large vibrations.

The reciprocating power tool comprises a motor and a transmission mechanism, wherein the motor drives the working head to reciprocate through the transmission mechanism, the transmission mechanism comprises a reciprocating rod assembly, and the reciprocating rod assembly comprises a reciprocating rod and a reinforcing structure arranged on the reciprocating rod.

Above-mentioned reciprocating power tool, because reciprocating lever subassembly includes reciprocating lever and reinforcement structure, consequently the reciprocating lever can adopt the material that density is less to avoided the vibrations that bring because weight is too big in the course of the work, thereby avoided the user to feel great vibrations when using reciprocating power tool, improved user's use experience, and less machine vibrations are to the damage of each part. The density of the reinforcing structure is larger than that of the reciprocating rod, so that the weight is reduced, the reciprocating rod assembly is ensured to have enough rigidity and not to be bent in the running process, and the weight is reduced, and meanwhile, the good stability and the service life are ensured.

In one embodiment, the density of the reinforcing structure is greater than the density of the reciprocating rod.

In one embodiment, the reinforcing structure is a protective sleeve sleeved on the reciprocating rod.

In one embodiment, the reciprocating bar comprises a first reciprocating bar and a second reciprocating bar which are connected with each other, and the reinforcing structure is arranged on the second reciprocating bar.

In one embodiment, the diameter of the first reciprocating rod is larger than that of the second reciprocating rod, and one end of the reinforcing structure is propped against one end of the first reciprocating rod connected with the second reciprocating rod.

In one embodiment, the first reciprocating bar is integrally formed with the second reciprocating bar.

In one embodiment, the first and second reciprocating bars are both plastic.

In one embodiment, the material of the reinforcing structure is steel.

In one embodiment, the transmission mechanism further comprises a rotatable connecting rod, and the connecting rod can drive the reciprocating rod assembly to move along the axial direction of the reinforcing structure.

In one embodiment, the reciprocating power tool further includes a limiting member, the reciprocating lever is provided with a limiting groove extending axially along the reinforcing structure, and the limiting member is located in the limiting groove and can reciprocate along the limiting groove.

Drawings

FIG. 1 is a schematic view of a part of a reciprocating power tool of an embodiment;

fig. 2 is a cross-sectional view of the reciprocating power tool of fig. 1 taken along A-A.

Detailed Description

In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and 2, a reciprocating power tool 100 of the present preferred embodiment includes a motor and a transmission mechanism 20, wherein the motor drives a working head 40 to reciprocate through the transmission mechanism 20, thereby processing a workpiece. In the present embodiment, the reciprocating power tool 100 is a reciprocating saw, it being understood that in other embodiments, the reciprocating power tool 100 may be a jigsaw or the like.

The transmission mechanism 20 includes a reciprocating lever assembly 22, and the reciprocating lever assembly 22 includes a reciprocating lever 222 and a reinforcing structure 224 disposed on the reciprocating lever 222.

In the reciprocating power tool 100, since the reciprocating lever assembly 22 includes the reciprocating lever 222 and the reinforcing structure 224, the reciprocating lever 222 can be made of a material with a smaller density, so as to avoid vibration caused by excessive weight in the working process, thereby avoiding a user from feeling larger vibration when using the reciprocating power tool 100, improving the use experience of the user, and reducing damage to various parts caused by machine vibration. The density of the reinforcing structure 224 is greater than the density of the reciprocating bar 222, thereby reducing the weight while ensuring that the reciprocating bar assembly 22 has sufficient rigidity without buckling during operation, thereby reducing the weight while ensuring good stability and service life.

Further, the density of the reinforcing structure 224 is greater than the density of the reciprocating bar 222 to ensure sufficient rigidity while reducing the weight of the reciprocating bar assembly 22, and to avoid vibration due to excessive weight during operation.

In this embodiment, the reinforcing structure 224 is a protective sleeve sleeved on the reciprocating rod 222, and the protective sleeve is preferably a cylindrical structure. It is understood that the shape and the installation manner of the reinforcing structure 224 are not limited thereto, and may be set as required.

With continued reference to fig. 2, the reciprocating bar 222 includes a first reciprocating bar 2222 and a second reciprocating bar 2224 that are connected to each other, and the reinforcement structure 224 is disposed on the second reciprocating bar 2224 and does not completely cover the reciprocating bar 222, thereby further reducing the weight of the reciprocating bar assembly 22 while ensuring sufficient rigidity. It will be appreciated that the reciprocating lever 222 may be selectively positioned in areas of lesser stiffness or greater stress to increase the stiffness of the reciprocating lever 222 as desired to avoid buckling or breaking of the reciprocating lever 222.

Specifically, the diameter of the first reciprocating bar 2222 is greater than the diameter of the second reciprocating bar 2224, and thus has greater rigidity. One end of the reinforcement structure 224 abuts against one end of the first reciprocating bar 2222 connected with the second reciprocating bar 2224, and is limited by the step surface between the first reciprocating bar 2222 and the second reciprocating bar 2224, so as to avoid moving towards the first reciprocating bar 2222.

Further, the first reciprocating bar 2222 and the second reciprocating bar 2224 are integrally formed, so that the reciprocating bar 222 has high strength, breakage between the first reciprocating bar 2222 and the second reciprocating bar 2224 is avoided, the manufacturing of the reciprocating bar 222 is facilitated, and the production process is reduced.

In the present embodiment, the materials of the first and second reciprocating bars 2222 and 2224 are lightweight plastics. The material of the reinforcing structure 224 is steel. The plastic is mainly composed of carbon, oxygen, hydrogen, nitrogen and other organic or inorganic elements, and can be mechanically heated to melt, pressurized to flow and cooled to solidify to form various shapes. Since the rigidity of the steel material is greater than that of the plastic, by providing the reinforcing structure 224 made of the steel material on the reciprocating lever 222 of the plastic material, it is possible to secure the reciprocating lever 222 with a sufficient rigidity while having a light weight. It will be appreciated that the material of the reciprocating lever 222 is not so limited and that other materials may be used as desired. The first reciprocating bar 2222 and the second reciprocating bar 2224 may be formed separately or may be of different materials.

With continued reference to fig. 1 and 2, the transmission mechanism 20 further includes a rotatable link 24, and the link 24 drives the reciprocating rod assembly 22 to move axially along the reinforcing structure 224, so as to convert the rotation of the link 24 into an axial linear motion. Thus, the motor can be connected with the connecting rod 24 and drive the connecting rod 24 to rotate, so as to drive the reciprocating rod assembly 22 to axially reciprocate, and finally drive the working head 40 to perform cutting operation.

Further, the reciprocating power tool 100 further includes a limiting member 26, the reciprocating lever 222 is provided with a limiting groove 2222a extending along the axial direction of the reinforcing structure 224, and the limiting member 26 is located in the limiting groove 2222a and can reciprocate along the limiting groove 2222a, so as to limit the reciprocating movement of the reciprocating lever 222 in the extending direction of the limiting groove 2222a, and change the transmission direction.

Further, the reciprocating power tool 100 further includes a bearing 28, wherein one end of the reciprocating lever 222 is rotatably connected to the connecting rod 24, and the other end is sleeved in the bearing 28 and can move axially relative to the bearing 28.

The reciprocating power tool 100 described above, because the reciprocating lever assembly 22 is made of a less dense material, is less prone to vibration during operation and improves user experience. And, since the reciprocating lever assembly 22 is light in weight, the overall weight is reduced, facilitating the use and movement of the reciprocating power tool 100.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A reciprocating power tool for driving a working head to reciprocate to process a workpiece, the reciprocating power tool comprising a motor and a transmission mechanism, the motor driving the working head to reciprocate through the transmission mechanism, the reciprocating power tool being characterized in that the transmission mechanism comprises a reciprocating rod assembly comprising a reciprocating rod and a reinforcing structure arranged on the reciprocating rod; the material of the reciprocating rod is plastic; the density of the reinforcing structure is greater than that of the reciprocating rod.

2. The reciprocating power tool of claim 1, wherein the reinforcing structure is a protective sleeve that is sleeved over the reciprocating lever.

3. The reciprocating power tool of claim 1, wherein the reciprocating lever comprises a first reciprocating lever and a second reciprocating lever connected to each other, the reinforcement structure being provided to the second reciprocating lever.

4. The reciprocating power tool of claim 3, wherein the diameter of the first reciprocating rod is greater than the diameter of the second reciprocating rod, and wherein one end of the reinforcing structure abuts against one end of the first reciprocating rod to which the second reciprocating rod is connected.

5. The reciprocating power tool of claim 3, wherein the first reciprocating lever is integrally formed with the second reciprocating lever.

6. The reciprocating power tool of claim 1, wherein the material of the reinforcing structure is steel.

7. The reciprocating power tool of claim 1, wherein the transmission mechanism further comprises a rotatable link that moves the reciprocating bar assembly in an axial direction of the reinforcing structure.

8. The reciprocating power tool of claim 1, further comprising a stop member, wherein the reciprocating lever defines a stop slot extending axially along the reinforcement structure, and wherein the stop member is positioned within and reciprocally movable along the stop slot.