CN219549602U - Sealing element and reciprocating saw with same - Google Patents
Sealing element and reciprocating saw with same Download PDFInfo
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- CN219549602U CN219549602U CN202320008873.1U CN202320008873U CN219549602U CN 219549602 U CN219549602 U CN 219549602U CN 202320008873 U CN202320008873 U CN 202320008873U CN 219549602 U CN219549602 U CN 219549602U
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Abstract
The utility model belongs to the technical field of reciprocating saws, and particularly relates to a sealing element and a reciprocating saw with the sealing element. The sealing element comprises a sealing element body, a flow guiding part is formed on the outer wall of the sealing element body, and the flow guiding part is used for guiding grease between the sealing element body and the containing shell. The sealing member body outer wall is formed with water conservancy diversion portion, and when the motor rotated, the motor drove sealing member body and rotates together to make the sealing member body and hold the inside that the shell was held to the grease pump sending between the shell to through water conservancy diversion portion, thereby avoid the grease to hold the outside of shell from the gap seepage between sealing member and the shell, improve reciprocating saw's leakproofness.
Description
Technical Field
The utility model belongs to the technical field of reciprocating saws, and particularly relates to a sealing element and a reciprocating saw with the sealing element.
Background
The output shaft of the motor of the reciprocating saw is generally parallel to the reciprocating bar, and the reciprocating bar of the reciprocating saw and the output shaft of the motor may be arranged in a vertical fashion for convenient use by an operator to reduce the overall length of the reciprocating saw. The reciprocating saw is accommodated in the accommodating shell, the rotating shaft of the motor stretches into the accommodating shell and is connected with the reciprocating rod through the gear, and the output shaft of the motor and the accommodating shell are sealed through the sealing piece. When the reciprocating saw is used, the motor is usually located below the reciprocating saw, the output shaft of the motor drives the sealing element to rotate relative to the accommodating shell, and grease of the accommodating shell can leak outwards through a gap between the sealing element and the accommodating shell, so that the sealing effect of the sealing element is poor.
Disclosure of Invention
The utility model aims to at least solve the problem of poor sealing effect of the existing reciprocating saw. The aim is achieved by the following technical scheme:
the utility model provides a sealing element, which is used for sealing a reciprocating saw and comprises a sealing element body, wherein a flow guiding part is formed on the outer wall of the sealing element body and used for guiding grease between the sealing element body and a containing shell.
According to the sealing element disclosed by the embodiment of the utility model, the guide part is formed on the outer wall of the sealing element body, and when the motor rotates, the motor drives the sealing element body to rotate together, so that grease between the sealing element and the containing shell is pumped into the containing shell through the guide part, leakage of the grease from a gap between the sealing element and the containing shell to the outside of the containing shell is avoided, and the sealing performance of the reciprocating saw is improved.
In addition, the sealing element according to the embodiment of the utility model can also have the following technical characteristics:
in some embodiments of the utility model, the flow guide comprises a helical rib formed by an outer wall of the seal body extending towards the outside of the seal body, the helical rib being helical in an axial direction of the seal body.
In some embodiments of the utility model, the number of helical ribs is a plurality.
In some embodiments of the utility model, the plurality of helical ribs are uniformly disposed along the circumference of the seal body.
In some embodiments of the utility model, the deflector is left-handed in the event that the seal body rotates clockwise.
In some embodiments of the utility model, the deflector is in a right-handed helical configuration with the seal body rotated counterclockwise.
In some embodiments of the present utility model, the seal body includes a first sealing portion and a second sealing portion, the transverse cross section of the first sealing portion is annular, the inner ring of the first sealing portion is used for being sleeved on the output shaft of the motor, the second sealing portion extends from the outer wall of the first sealing portion to the outside to form an everting structure, and the flow guiding portion is arranged on the outer wall of the everting structure.
In some embodiments of the present utility model, the eversion structure includes a first flange and a second flange, the first flange and the second flange are both annular structures, an inner ring of the first flange is connected to an outer wall of the first sealing portion, an outer ring of the first flange is connected to an inner ring of the second flange, a thickness of the first flange is smaller than a thickness of the second flange, and an annular accommodating groove is formed between the first sealing portion and the second flange.
In some embodiments of the utility model, the seal is an integrally formed plastic piece.
The utility model provides a reciprocating saw, which comprises a motor, a reciprocating rod, a containing shell and a sealing piece, wherein the reciprocating rod is arranged in the containing shell, an output shaft of the motor stretches into the containing shell and is connected with the reciprocating rod, the sealing piece is sleeved on the output shaft of the motor, the flow guiding part is arranged close to the containing shell, and the sealing piece is the sealing piece according to any embodiment.
According to the reciprocating saw disclosed by the embodiment of the utility model, the guide part is formed on the outer wall of the sealing element body, and when the motor rotates, the motor drives the sealing element body to rotate together, so that grease between the sealing element body and the containing shell is pumped into the containing shell through the guide part, leakage of the grease from a gap between the sealing element body and the containing shell to the outside of the containing shell is avoided, and the sealing performance of the reciprocating saw is improved.
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 cross-sectional view of the overall construction of a reciprocating saw according to an embodiment of the present utility model;
FIG. 2 is a schematic view of the overall structure of the seal shown in FIG. 1;
fig. 3 is a schematic view of a partial structure of the seal shown in fig. 1.
The various references in the drawings are as follows:
100: a seal;
10: seal body, 11: first seal portion, 12: second sealing portion, 121: first flange, 122: second flange, 123: annular holding groove, 101: an outer wall;
20: the diversion part, 21 is a spiral rib;
200: motor, 201: an output shaft;
300: and a receiving case.
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.
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. Thus, 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, an embodiment of the first aspect of the present utility model proposes a seal 100, the seal 100 being used for sealing a reciprocating saw, the seal 100 comprising a seal body 10, an outer wall 101 of the seal body 10 being formed with a deflector 20, the deflector 20 being used for guiding grease between the seal body 10 and a receiving case 300.
According to the sealing member 100 of the embodiment of the present utility model, the guide part 20 is formed on the outer wall of the sealing member body 10, and when the motor 200 rotates, the motor 200 drives the sealing member body 10 to rotate together, so that grease between the sealing member body 10 and the accommodating case 300 is pumped into the interior of the accommodating case 300 through the guide part 20, thereby avoiding the grease from leaking to the exterior of the accommodating case 300 from the gap between the sealing member 100 and the accommodating case 300, and improving the sealing performance of the reciprocating saw.
In some embodiments of the present utility model, the flow guiding portion 20 includes a spiral rib 21, the spiral rib 21 extends from the outer wall of the seal member body 10 towards the outside of the seal member body 10 to be in a convex shape, the spiral rib 21 is in a spiral shape along the axial direction of the seal member body 10, a certain gap exists between the spiral rib 21 and the accommodating case 300, so that abrasion between the convex flow guiding portion 20 and the accommodating case 300 when the motor 200 drives the seal member body 10 to rotate is avoided, and the service lives of the accommodating case 300 and the flow guiding portion 20 are prolonged.
In other embodiments of the present utility model, the flow guiding portion 20 may be a groove extending from the outer wall of the sealing member body 10 toward the inside of the sealing member body 10, and a certain gap exists between the outer wall of the sealing member body 10 and the accommodating case 300, so as to avoid abrasion between the outer wall of the sealing member body 10 and the accommodating case 300 when the motor 200 drives the sealing member body 10 to rotate, and improve the service lives of the accommodating case 300 and the flow guiding portion 20.
In some embodiments of the present utility model, the number of the spiral ribs 21 is plural, and in the case that the motor 200 drives the seal body 10 to rotate at the same speed, the plural spiral ribs 21 can pump a larger amount of grease so that the grease is rapidly removed from between the seal 100 and the receiving case 300. The greater the number of helical ribs 21, the faster the seal 100 pumps grease at the same rotational speed of the seal body 10 by the motor 200.
In other embodiments of the present utility model, the diversion portion 20 may also include one spiral rib 21, and one spiral rib 21 may also perform the function of pumping grease into the accommodating case 300, but in consideration that the amount of pumped grease is smaller than that of the plurality of spiral ribs 21, the present embodiment preferably uses the plurality of spiral ribs 21.
On the basis of the above preferred scheme, the plurality of spiral ribs 21 are uniformly arranged along the circumferential direction of the sealing member body 10, so that the plurality of spiral ribs 21 are prevented from being gathered and arranged in one, two or several areas to uniformly pump grease, and enough spaces between two adjacent spiral ribs 21 are ensured to enable the grease to pass through, and further the efficiency of pumping the grease is improved.
In some embodiments of the present utility model, the flow guide 20 is of a left-handed spiral configuration, and correspondingly, the motor 200 is rotated clockwise. In other embodiments, the flow guiding portion 20 may also have a right spiral structure, and correspondingly, the motor 200 rotates counterclockwise.
In some embodiments of the present utility model, the seal body 10 includes a first seal portion 11 and a second seal portion 12, a transverse cross section of the first seal portion 11 is annular, an inner ring of the first seal portion 11 is used to be sleeved on the output shaft 201 of the motor 200, and the first seal portion 11 is in interference fit with the output shaft 201 of the motor 200 to prevent grease from leaking between the output shaft 201 of the motor 200 and the first seal portion 11. The second sealing portion 12 extends outwards along the outer wall of the first sealing portion 11 to form an everting structure, and the flow guiding portion 20 is arranged on the outer wall of the everting structure.
In some embodiments of the present utility model, the eversion structure includes a first flange 121 and a second flange 122, the first flange 121 and the second flange 122 are both annular, an inner ring of the first flange 121 is connected to an outer ring of the first sealing portion 11, an inner ring of the second flange 122 is connected to an outer ring of the first flange 121, and a thickness of the first flange 121 is smaller than a thickness of the second flange 122, such that an annular receiving groove 123 is formed between the second flange 122 and the first sealing portion 11. Correspondingly, mounting structures adapted to the first sealing part 11 and the second sealing part 12 are formed on the accommodating case 300.
In some embodiments of the present utility model, the seal 100 is an integrally formed plastic piece, and the existing rubber seal 100 has less rotational resistance and faster heat dissipation than plastic pieces.
An embodiment of the second aspect of the present utility model proposes a reciprocating saw, which includes a motor 200, a reciprocating bar (not shown in the drawings), a housing case 300, and a sealing member 100, the reciprocating bar is disposed in the housing case 300, an output shaft 201 of the motor 200 extends into the housing case 300 in a direction perpendicular to the reciprocating bar and is connected to the reciprocating bar through a gear, the sealing member 100 is sleeved on the output shaft 201 of the motor 200, and an interference fit is provided between the sealing member 100 and the output shaft 201 of the motor 200, an outer wall of the sealing member 100 is in contact with the housing case 300, and a flow guiding portion 20 is disposed close to the housing case 300, and the sealing member 100 is the sealing member 100 according to any one of the embodiments.
According to the reciprocating saw of the embodiment of the present utility model, the guide part 20 is formed on the outer wall of the sealing member body 10, and when the motor 200 rotates, the motor 200 drives the sealing member body 10 to rotate together, so that grease between the sealing member body 10 and the accommodating case 300 is pumped into the interior of the accommodating case 300 through the guide part 20, thereby preventing the grease from leaking to the exterior of the accommodating case 300 from the gap between the sealing member 100 and the accommodating case 300, and improving the sealing performance of the reciprocating saw.
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 present utility model shall be subject to the protection scope of the claims.
Claims (10)
1. The sealing piece is used for sealing the reciprocating saw and is characterized by comprising a sealing piece body, wherein a flow guiding part is formed on the outer wall of the sealing piece body and used for guiding grease between the sealing piece body and the containing shell.
2. The seal of claim 1, wherein the flow guide comprises a helical rib formed by an outer wall of the seal body extending toward an exterior of the seal body, the helical rib being helical in an axial direction of the seal body.
3. The seal of claim 2, wherein the number of helical ribs is a plurality.
4. A seal according to claim 3, wherein a plurality of said spiral ribs are uniformly arranged along the circumferential direction of said seal body.
5. The seal of claim 1, wherein the deflector is left-handed in configuration with clockwise rotation of the seal body.
6. The seal of claim 1, wherein the deflector is right-handed in the event that the seal body rotates counterclockwise.
7. The seal according to any one of claims 1 to 6, wherein the seal body includes a first seal portion and a second seal portion, the first seal portion has a ring-shaped transverse cross section, an inner ring of the first seal portion is used for being sleeved on an output shaft of the motor, the second seal portion extends from an outer wall of the first seal portion to the outside to form an everting structure, and the flow guiding portion is arranged on the outer wall of the everting structure.
8. The seal of claim 7, wherein the eversion structure comprises a first flange and a second flange, the first flange and the second flange are both annular structures, an inner ring of the first flange is connected to an outer wall of the first sealing portion, an outer ring of the first flange is connected to an inner ring of the second flange, a thickness of the first flange is smaller than a thickness of the second flange, and an annular accommodating groove is formed between the first sealing portion and the second flange.
9. The seal of any one of claims 1 to 6, wherein the seal is an integrally formed plastic piece.
10. A reciprocating saw, characterized in that, the reciprocating saw includes motor, reciprocating rod, holds shell and sealing member, the reciprocating rod is located hold in the shell, the output shaft of motor stretches into hold the shell and with the reciprocating rod is connected, the sealing member cover is located the output shaft of motor, water conservancy diversion portion is close to hold the shell setting, the sealing member is the sealing member according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008873.1U CN219549602U (en) | 2023-01-03 | 2023-01-03 | Sealing element and reciprocating saw with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320008873.1U CN219549602U (en) | 2023-01-03 | 2023-01-03 | Sealing element and reciprocating saw with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219549602U true CN219549602U (en) | 2023-08-18 |
Family
ID=87708212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320008873.1U Active CN219549602U (en) | 2023-01-03 | 2023-01-03 | Sealing element and reciprocating saw with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219549602U (en) |
-
2023
- 2023-01-03 CN CN202320008873.1U patent/CN219549602U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |