CN215746798U - Reciprocating saw - Google Patents
Reciprocating saw Download PDFInfo
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- CN215746798U CN215746798U CN202121672787.8U CN202121672787U CN215746798U CN 215746798 U CN215746798 U CN 215746798U CN 202121672787 U CN202121672787 U CN 202121672787U CN 215746798 U CN215746798 U CN 215746798U
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Abstract
The utility model belongs to the technical field of reciprocating saws, and provides a reciprocating saw which comprises a shell, a driving unit arranged in the shell, a reciprocating rod arranged in the shell and an eccentric wheel, wherein the eccentric wheel comprises an eccentric wheel body and a cylindrical pin arranged on the eccentric wheel body, the reciprocating rod is eccentrically connected with the eccentric wheel through the cylindrical pin, the driving unit is in transmission connection with the eccentric wheel, the driving unit drives the reciprocating rod to do linear reciprocating motion relative to the shell through driving the eccentric wheel, and the gravity center position of the eccentric wheel is arranged on one side, opposite to the cylindrical pin, of the eccentric wheel. The reciprocating saw provided by the utility model is provided with the eccentric gear with the gravity center deviating from the rotation axis, and the gravity center is deviated in the direction away from the cylindrical pin. The effect of this is, can produce the bigger centrifugal force of B direction when the gear rotates, can balance the thrust or the pulling force to the cylindric lock because inertia or load impact when partly reciprocating lever reciprocating motion to reduce the holistic sensation of vibration when the machine operation.
Description
Technical Field
The utility model belongs to the technical field of reciprocating saws, and particularly relates to a reciprocating saw.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The high-frequency reciprocating motion of the reciprocating rod during the operation of the existing reciprocating saw can generate inertia and load impact a transmission mechanism, so that the vibration and noise during the operation of the reciprocating saw are large, and the use comfort of a user is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to at least solve the problem that the vibration is large when the reciprocating saw runs and the use comfort of a user is influenced in the prior art, and the aim is realized by the following technical scheme:
a first aspect of the present invention provides a reciprocating saw comprising:
a housing;
a drive unit disposed within the housing;
the reciprocating rod is arranged in the shell;
the eccentric wheel comprises an eccentric wheel body and a cylindrical pin arranged on the eccentric wheel body, the reciprocating rod is eccentrically connected with the eccentric wheel through the cylindrical pin, the driving unit is in transmission connection with the eccentric wheel, the driving unit drives the reciprocating rod to do linear reciprocating motion relative to the shell through driving the eccentric wheel, and the gravity center position of the eccentric wheel is arranged on one side, opposite to the cylindrical pin, of the eccentric wheel.
The reciprocating saw provided by the utility model is provided with the eccentric gear with the gravity center deviating from the rotation axis, the rotation center of the eccentric gear is set to be A in the direction towards the cylindrical pin, the opposite direction is set to be B, the gravity center is specially deviated towards the B direction, and the material on the B side is more and thicker. The effect of this is, can produce the bigger centrifugal force of B direction when the gear rotates, can balance the thrust or the pulling force to the cylindric lock because inertia or load impact when partly reciprocating lever reciprocating motion to reduce the holistic sensation of vibration when the machine operation.
In addition, the reciprocating saw according to the utility model can also have the following additional technical characteristics:
in some embodiments of the utility model, the eccentric further comprises a counterweight protrusion, and the counterweight protrusion is arranged on the side, opposite to the cylindrical pin, of the eccentric body.
In some embodiments of the present invention, the weight protrusions are disposed at an angle of 180 ° in a circumferential direction of the eccentric.
In some embodiments of the present invention, the reciprocating saw further includes a first bearing, the first bearing is sleeved on the cylindrical pin, the reciprocating rod is provided with a sliding slot, and the first bearing is disposed in the sliding slot and abuts against the reciprocating rod.
In some embodiments of the present invention, the reciprocating saw further comprises a blade cartridge provided at one end of the reciprocating rod.
In some embodiments of the present invention, the reciprocating saw further includes a sliding bearing connected to the housing, the reciprocating saw is inserted into the sliding bearing, the reciprocating saw further includes a positioning pin disposed on the reciprocating rod and a limiting groove disposed on an inner wall surface of the sliding bearing, and the positioning pin is disposed in the limiting groove in a manner of being capable of sliding back and forth along a straight line.
In some embodiments of the present invention, the reciprocating saw further includes a second bearing, the eccentric wheel further includes an input shaft disposed on the eccentric wheel body, the input shaft is in transmission connection with the driving unit, the second bearing is sleeved on the input shaft, and an outer side of the second bearing is connected with the housing.
In some embodiments of the present invention, the reciprocating saw further comprises a clamp spring clamped in the housing, and one axial end of the clamp spring abuts against the second bearing.
In some embodiments of the utility model, the housing comprises a shell and a cover, the cover being removably connected to the shell.
In some embodiments of the present invention, the reciprocating rod is a hollow rod structure.
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 parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 schematically illustrates a cross-sectional structural view of a reciprocating saw according to an embodiment of the present invention;
FIG. 2 schematically illustrates an exploded view of a reciprocating saw according to an embodiment of the present invention;
the reference symbols in the drawings denote the following:
10: a housing, 11: a housing cover, 12: reciprocating lever, 13: eccentric wheel body, 14: cylindrical pin, 15: weight projection, 16: first bearing, 17: second bearing, 18, sliding bearing, 19: blade cartridge, 20: input shaft, 21: circlip, 22: a chute.
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" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "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 specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms, 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 "second" and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, an 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 convenience of description, spatially relative terms, such as "inner", "outer", "inner", "side", "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. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 and 2, a first aspect of the present invention provides a reciprocating saw, which comprises a housing, a driving unit disposed in the housing, a reciprocating rod 12 disposed in the housing, and an eccentric wheel including an eccentric wheel body 13 and a cylindrical pin 14 disposed on the eccentric wheel body 13, wherein the reciprocating rod 12 is eccentrically connected to the eccentric wheel through the cylindrical pin 14, the driving unit is in transmission connection with the eccentric wheel, the driving unit drives the reciprocating rod 12 to make a linear reciprocating motion relative to the housing by driving the eccentric wheel, and a center of gravity of the eccentric wheel is disposed on an opposite side of the eccentric wheel from the cylindrical pin 14.
It will be appreciated that the drive unit includes a drive motor and associated gear train, the gear train and eccentric gear converting the rotary motion of the drive motor into a linear reciprocating motion of the reciprocating rod 12. The reciprocating rod 12 may be provided with a sliding groove 22 to be connected with the cylindrical pin 14 in a matching manner, or may be provided with a long protrusion to be connected with a groove on the cylindrical pin 14 in a matching manner. The gravity center offset of the eccentric wheel can be realized by arranging a balance weight in the eccentric wheel or by additionally arranging a balance weight outside the eccentric wheel.
The reciprocating saw provided by the utility model is provided with the eccentric gear with the gravity center deviating from the rotation axis, the rotation center of the eccentric gear is A towards the direction of the cylindrical pin 14, the opposite direction is B, the gravity center is specially deviated towards the B direction, and the material on the B side is more and thicker. The effect of this is that when the gear rotates, a centrifugal force in the direction B is generated, and the thrust or tension on the cylindrical pin 14 due to inertia or load impact when a part of the reciprocating rod 12 reciprocates can be balanced, thereby reducing the overall vibration sense when the machine operates.
In some embodiments of the utility model, the eccentric wheel further comprises a counterweight protrusion 15, the counterweight protrusion 15 is arranged on the side, opposite to the cylindrical pin 14, of the eccentric wheel body 13, and the counterweight protrusion 15 is arranged outside the eccentric wheel to realize gravity center offset, so that the overall structure cost is low.
In some embodiments of the present invention, the counterweight protrusions 15 are disposed at an angle of 180 ° in the circumferential direction of the eccentric wheel, which can effectively offset the center of gravity of the eccentric wheel, providing a good vibration damping effect.
In some embodiments of the present invention, the reciprocating saw further includes a first bearing 16, the first bearing 16 is disposed on the cylindrical pin 14, the reciprocating rod 12 is disposed with a sliding slot 22, and the first bearing 16 is disposed in the sliding slot 22 and abuts against the reciprocating rod 12, so as to reduce the friction between the cylindrical pin 14 and the reciprocating rod 12.
In some embodiments of the present invention, the reciprocating saw further comprises a blade clamp 19 provided at one end of the reciprocating rod 12, providing the blade clamp 19 to facilitate clamping of the blade.
In some embodiments of the present invention, the reciprocating saw further includes a sliding bearing 18 connected to the housing, the reciprocating saw is disposed in the sliding bearing 18, the reciprocating saw further includes a positioning pin disposed on the reciprocating rod 12 and a limiting groove disposed on an inner wall surface of the sliding bearing 18, the positioning pin is disposed in the limiting groove in a manner of being capable of sliding back and forth along a straight line, so that the reciprocating rod 12 is not easy to rotate, and the operation is more stable.
In some embodiments of the present invention, the reciprocating saw further comprises a second bearing 17, the eccentric further comprises an input shaft 20 disposed on the eccentric body 13, the input shaft 20 is in transmission connection with the driving unit, the second bearing 17 is sleeved on the input shaft 20, the outer side of the second bearing 17 is connected with the housing, and the eccentric is supported in the housing through the second bearing 17, so as to improve the assembling reliability.
In some embodiments of the present invention, the reciprocating saw further includes a clamp spring 21 clamped in the housing, and an axial end of the clamp spring 21 abuts against the second bearing 17, and is blocked and positioned by the clamp spring 21, so that the reciprocating saw is easy to disassemble and assemble, and the assembling reliability is high.
In some embodiments of the utility model, the housing comprises a housing body 10 and a housing cover 11, the housing cover 11 being detachably connected to the housing body 10, such that the housing is easily disassembled for servicing of the internal components.
In some embodiments of the present invention, the reciprocating rod 12 is a hollow rod structure, which is light in weight and can improve the user experience.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A reciprocating saw, comprising:
a housing;
a drive unit disposed within the housing;
the reciprocating rod is arranged in the shell;
the eccentric wheel comprises an eccentric wheel body and a cylindrical pin arranged on the eccentric wheel body, the reciprocating rod is eccentrically connected with the eccentric wheel through the cylindrical pin, the driving unit is in transmission connection with the eccentric wheel, the driving unit drives the reciprocating rod to do linear reciprocating motion relative to the shell through driving the eccentric wheel, and the gravity center position of the eccentric wheel is arranged on one side, opposite to the cylindrical pin, of the eccentric wheel.
2. The reciprocating saw as defined in claim 1, wherein said eccentric further includes a counterweight protrusion, said counterweight protrusion being disposed on a side of said eccentric body opposite said cylindrical pin.
3. The reciprocating saw as defined in claim 2, wherein said weight protrusions are disposed at an angle of 180 ° in a circumferential direction of said eccentric wheel.
4. The reciprocating saw as defined in claim 1, further comprising a first bearing disposed on said cylindrical pin, said reciprocating rod having a sliding slot therein, said first bearing disposed in said sliding slot and abutting said reciprocating rod.
5. The reciprocating saw as defined in claim 1, further comprising a blade cartridge disposed at one end of said reciprocating bar.
6. The reciprocating saw as defined in any one of claims 1 to 5, further comprising a sliding bearing connected to said housing, said reciprocating saw being disposed in said sliding bearing, said reciprocating saw further comprising a positioning pin disposed on said reciprocating rod and a limiting groove disposed on an inner wall surface of said sliding bearing, said positioning pin being disposed in said limiting groove in a linearly reciprocating slidable manner.
7. The reciprocating saw as defined in any one of claims 1 to 5, wherein said reciprocating saw further includes a second bearing, said eccentric further includes an input shaft disposed on said eccentric body, said input shaft is in driving connection with said drive unit, said second bearing is fitted over said input shaft, and an outer side of said second bearing is connected to said housing.
8. The reciprocating saw as defined in claim 7, further comprising a snap spring captured within said housing, an axial end of said snap spring abutting said second bearing.
9. The reciprocating saw as defined in any one of claims 1 to 5, wherein said housing includes a housing body and a housing cover, said housing cover being removably connected to said housing body.
10. The reciprocating saw as defined in any one of claims 1 to 5, wherein said reciprocating bar is a hollow bar structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121672787.8U CN215746798U (en) | 2021-07-21 | 2021-07-21 | Reciprocating saw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121672787.8U CN215746798U (en) | 2021-07-21 | 2021-07-21 | Reciprocating saw |
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| Publication Number | Publication Date |
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| CN215746798U true CN215746798U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121672787.8U Active CN215746798U (en) | 2021-07-21 | 2021-07-21 | Reciprocating saw |
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| CN (1) | CN215746798U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116587226A (en) * | 2023-07-14 | 2023-08-15 | 江苏东成工具科技有限公司 | Air compression device and electric tool thereof |
-
2021
- 2021-07-21 CN CN202121672787.8U patent/CN215746798U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116587226A (en) * | 2023-07-14 | 2023-08-15 | 江苏东成工具科技有限公司 | Air compression device and electric tool thereof |
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