CN221066168U

CN221066168U - Swing saw

Info

Publication number: CN221066168U
Application number: CN202322681844.4U
Authority: CN
Inventors: 吴宁; 傅润泽; 祝健威; 董卫平
Original assignee: Zhejiang Kaichuang Electric Co ltd
Current assignee: Zhejiang Kaichuang Electric Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2024-06-04
Anticipated expiration: 2033-10-07

Abstract

The utility model particularly relates to a swing saw, which comprises a shell, a driving motor, a bearing housing and a swing block. The shell comprises a first shell and a second shell, and the first shell and the second shell are connected. The driving motor is arranged in the first shell, the output end of the driving motor is connected with the first shell through a bearing, and the output end of the driving motor is provided with an eccentric bearing. The bearing housing is clamped between the first shell and the second shell and forms a closed space with the bearing, the eccentric bearing is arranged in the closed space, and the bearing housing is provided with two through holes which are arranged at intervals. The swinging block is arranged in the second shell, and two plugs are arranged on the swinging block, pass through the through holes and are in butt joint with the peripheral surface of the eccentric bearing. According to the swing saw, the bearing housing is clamped and fixed between the first shell and the second shell to form a closed space for accommodating the eccentric bearing and filling lubricating oil, so that the problem of difficult preservation of the lubricating oil in the existing swing saw is solved.

Description

Swing saw

Technical Field

The utility model relates to the technical field of electric tools, in particular to a swing saw.

Background

A swing saw is a tool that drives a saw blade to swing. The structure of the existing swing saw includes: the machine comprises a shell, a rotating shaft installed through a bearing is arranged at the front part of the shell, the lower end of the rotating shaft extends out of the shell, a saw blade is arranged at the lower end of the rotating shaft, a swinging block is further arranged in the shell, one end of the swinging block is fixed with the middle part of the rotating shaft, a driving groove is formed in the other end of the swinging block, a motor is arranged at the rear part of the shell, a driving shaft installed through the bearing is arranged between the motor and the rotating shaft, the driving shaft is in driving connection with an output shaft of the motor, an eccentric shaft is arranged at the output end of the driving shaft, a bearing positioned in the driving groove is sleeved on the eccentric shaft, and when the motor drives the driving shaft to rotate to enable the eccentric shaft to eccentrically rotate, the bearing on the eccentric shaft can drive the swinging block to swing through pushing the left side and the right side of the driving groove, so that the rotating shaft drives the saw blade to swing.

However, the space of the accommodating cavity of the eccentric bearing of the oscillating saw is relatively large, and a lot of lubricating oil is often added for lubricating the eccentric bearing. And after the machine works for a period of time, the lubricating oil is difficult to keep around the eccentric bearings, and the service life of the machine is influenced.

Disclosure of utility model

The utility model aims to at least solve the problem that lubricating oil is difficult to preserve in the existing swing saw. The aim is achieved by the following technical scheme:

a first aspect of the present utility model proposes a swing saw comprising:

the shell comprises a first shell and a second shell, and the first shell and the second shell are connected;

The driving motor is arranged in the first shell, the output end of the driving motor is connected with the first shell through a first bearing, and the output end of the driving motor is also provided with an eccentric bearing;

The bearing housing is clamped between the first shell and the second shell, a closed space is formed between the bearing housing and the first bearing, the eccentric bearing is arranged in the closed space, and the bearing housing is provided with two through holes which are arranged at intervals;

The swinging block is arranged in the second shell, two plugs are arranged on the swinging block, and the plugs penetrate through the through holes and are abutted to the peripheral surface of the eccentric bearing.

The utility model relates to a swing saw, which comprises a shell, a driving motor, a bearing housing and a swing block. The shell comprises a first shell and a second shell. Through fixing bearing housing centre gripping between first casing and second casing to make first bearing and bearing housing form enclosure space, with be used for holding eccentric bearing and filling lubricating oil, simultaneously, the plug of swing piece and the global butt of eccentric bearing, make the swing piece when carrying out high-speed swing, lubricating oil can not be thrown away in the enclosure space, in order to provide long-term and good lubrication for eccentric bearing, help solving the problem that lubricating oil that exists in the current swing saw preserved difficulty, and then improve the life of swing saw.

In addition, the oscillating saw according to the utility model may have the following additional technical features:

In some embodiments of the utility model, the bearing housing comprises:

The cover body is provided with a first end and a second end, the first end is provided with an opening, the second end is provided with a closed state, and the end face of the second end is provided with the through hole;

The connecting plate is arranged at the first end and clamped between the first shell and the second shell.

In some embodiments of the present utility model, the second housing has a first accommodating chamber and a second accommodating chamber which are disposed in communication, the first accommodating chamber is used for accommodating the connecting plate, and the second accommodating chamber is used for accommodating the cover body.

In some embodiments of the utility model, the first housing has a plug-in portion that is inserted into the first cavity and abuts against the connection plate.

In some embodiments of the present utility model, the second housing further has a third cavity that is communicated with the first cavity, the third cavity is used for installing a rotating shaft, the swinging block is sleeved on the rotating shaft, and a plane where the two plugs are located is perpendicular to an axis of the rotating shaft.

In some embodiments of the present utility model, the first housing has a mounting surface that abuts against the second housing, a protrusion is provided on the mounting surface, and a receiving groove that is adapted to the protrusion is provided on the second housing.

In some embodiments of the present utility model, the first housing has a heat dissipation space, and a vent hole communicating with the heat dissipation space, a fan is disposed on an output shaft of the driving motor, and the fan is accommodated in the heat dissipation space.

In some embodiments of the utility model, the first housing comprises:

a first portion for mounting the drive motor;

the second part is connected with the first part, and the second part is used for being connected with the first shell.

In some embodiments of the utility model, at least one of the first portion and the second portion is provided with the heat dissipation space and the vent hole.

In some embodiments of the utility model, the second portion has a first receiving space for receiving the first bearing and a second receiving space for forming the heat dissipation space in cooperation with the first portion.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the utility model. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a schematic view of a structure of an oscillating saw according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a partial explosion of the illustrated oscillating saw according to an embodiment of the present utility model;

Fig. 3 is a partial schematic view of the swing saw according to the embodiment of the present utility model.

The various references in the drawings are as follows:

1. A housing; 11. a first housing; 111. a first section; 112. a second section; 1121. an insertion part; 1122. a protrusion; 1123. a heat dissipation space; 1124. a vent hole; 12. a second housing; 121. a first cavity; 122. a second cavity; 123. a third cavity; 124. a receiving groove;

2. A rotation shaft;

3. A swinging block; 31. a plug;

4. a bearing housing; 41. a cover body; 42. a connecting plate; 43. a through hole;

5. A driving motor; 51. a drive shaft;

6. a first bearing;

7. An eccentric bearing;

8. a fan.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "includes," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an order of performance is explicitly stated. It should also be appreciated that additional or alternative steps may be used.

Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

For ease of description, spatially relative terms, such as "inner," "outer," "lower," "below," "upper," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Accordingly, the example term "below … …" may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative relationship descriptors used herein interpreted accordingly.

As shown in fig. 1 to 3, the embodiment of the present utility model proposes a swing saw, which includes a housing 1, a driving motor 5, a bearing housing 4, and a swing block 3 in its entire design.

The housing 1 comprises a first housing 11 and a second housing 12, and the first housing 11 and the second housing 12 are connected. The driving motor 5 is arranged in the first shell 11, and the output end of the driving motor 5 is connected with the first shell 11 through the first bearing 6, and the output end of the driving motor 5 is also provided with the eccentric bearing 7. The bearing housing 4 is sandwiched between the first housing 11 and the second housing 12, and forms a closed space with the first bearing 6, and the eccentric bearing 7 is disposed in the closed space, and the bearing housing 4 has two through holes 43 disposed at intervals. The swinging block 3 is provided in the second housing 12, and two plugs 31 are provided on the swinging block 3, and the plugs 31 pass through the through holes 43 and abut against the circumferential surface of the eccentric bearing 7.

According to the oscillating saw disclosed by the utility model, the bearing housing 4 is clamped and fixed between the first shell 11 and the second shell 12, the first bearing 6 and the bearing housing 4 form a closed space for accommodating the eccentric bearing 7 and filling lubricating oil, and meanwhile, the plug 31 of the oscillating block 3 is abutted against the peripheral surface of the eccentric first bearing 6, so that the lubricating oil in the closed space is not thrown out when the oscillating block 3 oscillates at a high speed, long-term and good lubrication can be provided for the eccentric bearing 7, the problem of difficult preservation of the lubricating oil in the conventional oscillating saw is solved, and the service life of the oscillating saw is prolonged.

Specifically, the housing 1 includes a first housing 11 and a second housing 12, wherein the driving motor 5, the fan 8, the first bearing 6, and the eccentric bearing 7 are sequentially disposed in the first housing 11. A rotation shaft 2 and a swinging block 3 are provided in the second housing 12. The bearing housing 4 is held at the junction of the first housing 11 and the second housing 12. As shown in fig. 2 and 3, the first housing 11 includes a first portion 111 and a second portion 112, wherein the first portion 111 is used for mounting the driving motor 5, the second portion 112 is connected to the first portion 111, and the second portion 112 is used for being connected to the second housing 12. In the present embodiment, the first portion 111 and the second portion 112 are fastened or bolted, and the second housing 12 is connected to the second portion 112 by bolts. The first housing 11 is provided with the first portion 111 and the second portion 112, which is helpful for reducing the assembly difficulty of the driving motor 5, the fan 8, the first bearing 6 and the eccentric bearing 7 and improving the assembly efficiency.

In the present embodiment, the driving motor 5 is mounted in the second portion 112, the output end of the driving motor 5 is set as the driving shaft 51, and the fan 8, the first bearing 6 and the eccentric bearing 7 are sequentially sleeved on the driving shaft 51 of the driving motor 5, wherein the fan 8 is accommodated in a heat dissipation space 1123 described below, and the first bearing 6 is fixedly disposed on the second portion 112. The output end of the driving motor 5 may be provided as a fitting structure of the driving shaft 51 and the transmission shaft, in addition to the driving shaft 51, so that the fan 8, the first bearing 6, and the eccentric bearing 7 may be securely fitted.

As shown in fig. 3, the second portion 112 is provided with a first accommodating space and a second accommodating space, which are not labeled in the drawing. In the present embodiment, the first accommodation space is used for mounting the first bearing 6, and the second accommodation space is provided in communication with the first accommodation space. The first portion 111 is provided with a third accommodating space, when the first portion 111 is connected with the second portion 112, the second accommodating space and the third accommodating space cooperate to form a heat dissipation space 1123, the heat dissipation space 1123 is used for installing the fan 8, meanwhile, the second portion 112 is provided with a plurality of air vents 1124, the air vents 1124 are used for communicating with the second accommodating space, and after the first portion 111 is connected with the second portion 112, the air vents 1124 are used for communicating the heat dissipation space 1123 with the outside.

At this time, an insertion portion 1121 is provided in the second portion 112, and the insertion portion 1121 is inserted into the second housing 12 and cooperates with the second housing 12 to hold the bearing housing 4. In the present embodiment, the first accommodation space is provided in the insertion portion 1121, that is, the first bearing 6 is provided in the insertion portion 1121. Meanwhile, the eccentric bearing 7 is disposed at a distance from the first bearing 6 and is located outside the first accommodation space. When the first part 111 and the second housing 12 are connected, the eccentric bearing 7 protrudes into the second housing 12 and is located inside the bearing housing 4.

In some other embodiments of the present utility model, at least one of the first portion 111 and the second portion 112 is provided with a heat dissipation space 1123 and a vent hole 1124. Specifically, the heat dissipation space 1123 and the air vent 1124 may be separately formed on the first portion 111 or the second portion 112, or the heat dissipation space 1123 and the air vent 1124 may be formed on both the first portion 111 and the second portion 112. The heat dissipation space 1123 and the air vent 1124 are used for dissipating heat of the driving motor 5, and the specific arrangement manner is not limited.

As also shown in fig. 3, the second housing 12 has a first cavity 121, a second cavity 122, and a third cavity 123. The first accommodating cavity 121, the second accommodating cavity 122 and the third accommodating cavity 123 are sequentially communicated. The first accommodating cavity 121 is configured to cooperate with the insertion portion 1121 of the second portion 112 to clamp and fix the bearing housing 4, and the second accommodating cavity 122 is configured to accommodate the housing 41 of the bearing housing 4 and the eccentric bearing 7 to provide a working space of the eccentric bearing 7. The third accommodating cavity 123 is used for installing the rotating shaft 2, the swinging block 3 is sleeved on the rotating shaft 2, and two plugs 31 of the swinging block 3 are inserted into the second accommodating cavity 122 and are inserted into the bearing housing 4 to be abutted against the peripheral surface of the eccentric bearing 7.

It should be understood that the first cavity 121 and the second cavity 122 are each provided as cylindrical cavities, and the radial cross-sectional areas of the two cavities are different. In this embodiment, the radial section of the first accommodating cavity 121 is larger than the radial section of the first accommodating cavity 121, that is, the connection part between the first accommodating cavity 121 and the second accommodating cavity 122 is formed with a pressing surface, and when the insertion part 1121 of the second part 112 extends into the first accommodating cavity 121 and abuts against the bearing housing 4, the bearing housing 4 can be abutted against the pressing surface to form a clamping fixation for the bearing housing 4.

In the above-described specific embodiment, the bearing housing 4 includes the housing body 41 and the connection plate 42. Wherein, the cover 41 has a first end and a second end, the first end is provided as an opening, and the second end is provided in a closed manner. The connecting plate 42 is disposed at the first end, and when the first portion 111 is connected to the second housing 12, the connecting plate 42 is disposed in the first accommodating cavity 121 and clamped between the first housing 11 and the second housing 12, and at this time, the cover 41 is accommodated in the second accommodating cavity 122. In the present embodiment, the first portion 111 is connected to the second housing 12, so that the cover 41 and the first bearing 6 cooperate to form a closed space in which the eccentric bearing 7 is accommodated, and the closed space can provide an accommodation space for lubricating oil.

It should be noted that, instead of providing the bearing housing 4 as the housing 41 and the connecting plate 42, and fixing the bearing housing 4 by clamping the connecting plate 42, other structures or modes may be adopted to clamp the bearing housing 4, such as providing the bearing housing 4 as the housing 41, adapting the second accommodating cavity 122 to the housing 41, and providing a clamping plate in the second accommodating cavity 122 for matching with the inserting portion to complete fixing the bearing housing 4, but the above structure is optimal.

At this time, two through holes 43 are formed in the end face of the second end at intervals for passing through the two plugs 31 of the swinging block 3. Preferably, the through holes 43 are adapted to the plug 31, and in this embodiment, the through holes 43 have the same shape as the cross-section of the plug 31 and are square. The diameter of the through hole 43 differs from the radial dimension of the plug 31 by 0.1-0.3mm. By defining the aperture of the through hole 43, the discharge amount of the lubricating oil can be reduced while the vibration of the plug 31 is ensured.

It should be understood that the third accommodating cavity 123 is disposed in communication with the first accommodating cavity 121, and the third accommodating cavity 123 is used for mounting the rotating shaft 2, and in this embodiment, the axial direction of the rotating shaft 2 is disposed perpendicular to the axial direction of the first accommodating cavity 121. At this time, the swinging block 3 is sleeved on the rotating shaft 2, and two plugs 31 arranged at intervals are arranged on the swinging block 3, and each plug 31 passes through one through hole 43 and is in contact with the peripheral surface of the eccentric bearing 7. Preferably, the plane in which the two plugs 31 are located is perpendicular to the axis of the rotary shaft 2, which contributes to reducing the weight of the oscillating block 3 and further improving the space utilization of the oscillating saw.

The first housing 11 has a mounting surface that abuts against the second housing 12, the mounting surface is provided with the projection 1122, the second housing 12 is provided with the accommodation groove 124 that is adapted to the projection 1122, and the fitting of the projection 1122 and the accommodation groove 124 contributes to improvement of the convenience of mounting the second housing 12. Of course, in addition to this, the projection 1122 may be provided on the second housing 12 and on the acting surface where the second housing 12 abuts against the first housing 11, and accordingly, the accommodation groove 124 is provided on the first housing 11.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A pendulum saw, comprising:

2. The oscillating saw as defined in claim 1, wherein said bearing housing includes:

3. The oscillating saw as defined in claim 2, wherein said second housing has a first cavity and a second cavity disposed in communication, said first cavity being configured to receive said web and said second cavity being configured to receive said cover.

4. A swing saw according to claim 3, wherein said first housing has a plug-in portion which is inserted into said first cavity and abuts said connection plate.

5. A swing saw according to claim 3, wherein the second housing further has a third cavity in communication with the first cavity, the third cavity being configured to mount a rotating shaft, the swing block being sleeved on the rotating shaft, and the planes of the two plugs being perpendicular to the axis of the rotating shaft.

6. The oscillating saw as defined in claim 1, wherein said first housing has a mounting surface abutting said second housing, a projection being provided on said mounting surface, and a receiving groove adapted to said projection being provided on said second housing.

7. The oscillating saw defined in any one of claims 1-6, wherein said first housing has a heat dissipation space and a vent hole communicating with said heat dissipation space, a fan is provided on an output shaft of said drive motor, and said fan is accommodated in said heat dissipation space.

8. The oscillating saw as defined in claim 7, wherein said first housing includes:

a first portion for mounting the drive motor;

9. The oscillating saw as defined in claim 8, wherein at least one of said first portion and said second portion is provided with said heat dissipating space and said vent.

10. The oscillating saw as defined in claim 8, wherein said second portion has a first receiving space for receiving said first bearing and a second receiving space for cooperating with said first portion to form said heat dissipating space.