CN211681918U - Power line protection device for electric tool and electric tool - Google Patents
Power line protection device for electric tool and electric tool Download PDFInfo
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- CN211681918U CN211681918U CN201921895308.1U CN201921895308U CN211681918U CN 211681918 U CN211681918 U CN 211681918U CN 201921895308 U CN201921895308 U CN 201921895308U CN 211681918 U CN211681918 U CN 211681918U
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- power cord
- casing
- protection device
- electric tool
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Abstract
The utility model discloses a power cord protection device for electric tool belongs to electric tool technical field, and electric tool includes casing and power cord, and in the casing was located to the one end of power cord, be equipped with the line hole on the casing, power cord protection device included elastic protective sheath and rigid support cover, and the outside of power cord was located to the protective sheath cover and worn to locate line hole department, and the outside of supporting the protective sheath cover and locating the protective sheath just is located the casing, supports to be equipped with the normal running fit structure between cover and the casing. The utility model also provides an electric tool who adopts aforementioned power cord protection device. The elastic protective sleeve can prevent the power line from being extruded and abraded due to the contact with the shell, and the protection purpose is achieved. The supporting sleeve is in rigid fit with the casing, and the supporting sleeve cannot be separated from the casing due to deformation caused by stress in the rotating process, so that the overall stability of the power line protection device is improved, and the use experience of a user is improved.
Description
Technical Field
The utility model relates to an electric tool technical field especially relates to a power cord protection device for electric tool, in addition, the utility model discloses still relate to the electric tool who adopts this kind of power cord protection device.
Background
With the development of science and technology, the types and styles of electric tools are more and more, the functions are more and more diversified, and the electric tools also become common tools in modern production and life. The existing electric tool generally adopts a battery pack or an external power supply mode to supply power to an electric element, and when the power supply mode of the external power supply is adopted, a power line is required to be electrically connected to realize power supply.
In order to avoid the situation that the power line is damaged due to mutual extrusion and friction with the shell of the electric tool, the conventional electric tool powered by an external power supply of the power line can be provided with a power line sheath at the contact part of the power line and the shell of the electric tool, so that the extrusion and the friction between the power line and the shell of the electric tool are effectively avoided through the sheath, and the power line is protected.
Because of the additional arrangement of the power line sheath, the overall dimension of the electric tool is increased, and in order to reasonably reduce the packaging and transportation cost of the electric tool, the power line sheaths of some electric tools adopt a rotatable mounting structure. When the electric tool is not in use, the power cord sheath is folded relative to the shell, so that the overall dimension of the electric tool can be reasonably reduced, and the packaging and transportation cost of the electric tool can be reduced. When the electric tool is in use, the power line sheath is unfolded relative to the shell, so that the power line sheath is prevented from causing obstacles to the operation of the electric tool, and the electric tool can also realize the purpose of an external power supply through the power line.
However, in order to meet the requirements of the power line on extrusion prevention and friction prevention, the power line sheath generally has elasticity, the elastic power line sheath is easily separated from the shell of the electric tool due to elastic deformation in the back and forth rotation process, the stability of matching between the power line sheath and the shell is not high, and the use experience of a user is not favorably improved.
SUMMERY OF THE UTILITY MODEL
In order to solve the shortcomings and deficiencies existing in the prior art, the utility model provides a power cord protection device for an electric tool, which can effectively improve the stability of a protective sleeve.
In order to realize the technical purpose, the utility model provides a pair of a power cord protection device for electric tool, electric tool include casing and power cord, and in the casing was located to the one end of power cord, be equipped with the line hole of crossing that supplies the power cord to wear through on the casing, power cord protection device includes elastic protective sheath and rigid support cover, and the outside of power cord is located to the protective sheath cover and wears to locate line hole department, supports the outside of protective sheath and is located the casing, supports to be equipped with the normal running fit structure between cover and the casing.
Preferably, the rotating fit structure comprises a support shaft arranged on the support sleeve and a support hole arranged on the inner wall of the shell, and the support shaft is in clearance fit with the support hole; or the rotating fit structure comprises a support shaft arranged on the inner wall of the shell and a support hole arranged on the support sleeve, and the support shaft is in clearance fit with the support hole.
Preferably, the support shaft is symmetrically provided with two sections, and the two sections of support shafts are formed in a protruding mode along the same axial direction.
Preferably, the housing includes a left housing and a right housing which are engaged with each other, and the protruding direction of the support shaft is identical to the assembling direction of the left and right housings.
Preferably, the support sleeve comprises a main body part and an extension part, the rotation fit structure is arranged between the main body part and the casing, the extension part is formed by protruding from the main body part to the wire passing hole and extends into the wire passing hole, and the thickness of the extension part is smaller than that of the main body part.
Preferably, be equipped with first arcwall face on supporting the circumference outer wall of cover, the one end of protective sheath is located in the casing and the tip is equipped with the second arcwall face, is equipped with on the inner wall of casing to be located first, two arcwall face peripheries and be curved spacing protruding muscle.
Preferably, one end of the protective sleeve is arranged in the casing, a positioning step is arranged on the periphery of the protective sleeve, and one end of the supporting sleeve abuts against the positioning step.
Preferably, the maximum angle of rotation of the support sleeve relative to the machine shell is alpha, and alpha is more than or equal to 60 degrees and less than or equal to 180 degrees.
After the technical scheme is adopted, the utility model has the advantages of as follows:
1. the utility model provides a power cord protection device for electric tool improves power cord protection device's concrete structure, has adopted elastic protective sheath and rigid support cover combined structure mode. The elastic protective sleeve can prevent the power line from being extruded and abraded due to the contact with the shell, and the protection purpose is achieved. The outside of protective sheath is located to rigid support cover, supports to set up normal running fit structure between cover and the casing, realizes through supporting the cover that the protective sheath can be for casing pivoted purpose, and the protective sheath can expand or draw in for the casing, better satisfying packing, transportation requirement when making the protective sheath satisfy the protection requirement. Because the supporting sleeve is in rigid fit with the casing, the supporting sleeve cannot be separated from the casing due to deformation caused by stress in the rotating process, the whole stability of the power line protection device is favorably improved, and the use experience of a user is favorably improved.
2. Support and specifically can adopt back shaft and support hole clearance fit's structure to realize the normal running fit purpose between cover and the casing, support the normal running fit simple structure between cover and the casing, be convenient for assemble.
3. Specifically, two sections of supporting shafts are formed in a protruding mode along the same axial direction, the protruding direction of each supporting shaft is consistent with the assembling direction of the left shell body and the assembling direction of the right shell body, the matching direction between each supporting shaft and the corresponding supporting hole is consistent with the assembling direction between the left shell body and the corresponding supporting hole, the supporting shafts can be matched with the corresponding supporting holes when the left shell body and the right shell body are assembled, and mutual interference during assembling is avoided.
4. Support the cover and include main part and extension, rationally set up the concrete structure that supports the cover, the extension cover is located the outside of protective sheath and is stretched into the line hole, rationally reduces the protective sheath through the extension and crosses the area of contact between the line hole inner wall, is favorable to alleviateing friction, the extrusion between protective sheath and the casing to be favorable to further improving the guard action to the power cord.
5. The arc-shaped limiting convex rib is located at the periphery of the first arc-shaped surface and the second arc-shaped surface, the limiting convex rib can be matched with the first arc-shaped surface and the second arc-shaped surface to limit the supporting sleeve and the protective sleeve, the stability of the supporting sleeve and the protective sleeve is favorably improved, and interference can not be caused by the back-and-forth rotation of the supporting sleeve and the protective sleeve.
6. The one end of supporting the cover supports location step department on the protective sheath, makes the protective sheath receive the location through supporting the cooperation of cover and location step, improves the installation stability of protective sheath, avoids the protective sheath because of the atress from the condition that wire hole department deviate from.
The utility model also provides an electric tool, including casing and power cord, in the casing was located to the one end of power cord, be equipped with the line hole of crossing that supplies the power cord to wear through on the casing, electric tool still includes the power cord protection device that is used for electric tool of above-mentioned record.
Preferably, the inner wall of the casing is provided with positioning convex ribs which are arranged in pairs, a positioning clamping groove which is in interference fit with the power line is formed between the paired positioning convex ribs, and the local part of the power line is clamped in the positioning clamping groove.
The utility model provides an electric tool adopts the power cord protection device of above-mentioned record, not only can effectively satisfy the protection purpose of power cord, can also effectively improve the stability of protective sheath, avoids the protective sheath to break away from the condition of crossing the line hole because of the atress takes place to warp, is favorable to improving user and uses experience.
Drawings
Fig. 1 is a schematic view of a power cord protection device according to an embodiment of the present invention applied to an electric tool;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of a protective sleeve and a supporting sleeve according to an embodiment of the present invention;
fig. 4 is a partial schematic view of a power cord protection device disposed on an electric tool according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating a power cord protection device disposed on an electric tool according to an embodiment of the present invention, the power cord protection device being rotated from a retracted state to an extended state.
In the figure, 100-shell, 101-line through hole, 102-positioning convex rib, 110-left shell, 111-left handle shell part, 112-left support hole, 113-left limit convex rib, 120-right shell, 121-right handle shell part, 122-right support hole, 123-right limit convex rib, 200-power line, 300-power line protection device, 310-protective sleeve, 311-through hole, 312-second arc surface, 313-positioning step, 320-support sleeve, 321-main body part, 322-extension part, 323-through hole, 324-support shaft and 325-first arc surface.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments. It is to be understood that the following terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like are used in an orientation or positional relationship relative to one another only as illustrated in the accompanying drawings and are used merely for convenience in describing and simplifying the invention, and do not indicate or imply that the device/component so referred to must have a particular orientation or be constructed and operated in a particular orientation and therefore should not be considered as limiting the invention.
Example one
As shown in fig. 1 to 5, a first embodiment of the present invention provides a power cord protection device 300 for an electric tool, the electric tool includes a housing 100 and a power cord 200, one end of the power cord 200 is disposed in the housing 100, and the housing 100 is provided with a wire passing hole 101 for the power cord 200 to pass through. The power cord protection device 300 includes an elastic protection sleeve 310 and a rigid support sleeve 320, the protection sleeve 310 is sleeved on the outside of the power cord 200 and penetrates through the wire passing hole 101, the support sleeve 320 is sleeved on the outside of the protection sleeve 310 and is located in the housing 100, and a rotation fit structure is provided between the support sleeve 320 and the housing 100.
In this embodiment, the casing 100 includes a left casing 110 and a right casing 120 which are engaged with each other, and the left and right casings 110 and 120 are assembled from the left-right direction and fixedly coupled together by screws. The inside of the casing 100 is provided with power consumption components such as a control board and a motor, the end of the power cord 200 inside the casing 100 is electrically connected to the power consumption components, and the end of the power cord 200 extending out of the casing 100 is provided with a plug. In order to hold and take the electric tool conveniently, the casing 100 is provided with a handle, the left casing 110 is provided with a left handle casing part 111, the right casing 120 is provided with a right handle casing part 121, and the left and right handle casing parts 111, 121 are assembled and fixed to form the handle. The left handle shell 111 is provided with a left wire passing groove, the right handle shell 121 is provided with a right wire passing groove, and the left and right wire passing grooves are assembled and fixed on the left and right shells 110 and 120 to form the wire passing hole 101.
Referring to fig. 3, the protective sleeve 310 is substantially in a hollow long cylindrical shape, a through hole 311 for the power line 200 to pass through is formed in the protective sleeve 310, and the protective sleeve is sleeved outside the power line through the cooperation of the through hole 311 and the power line. Support and be equipped with the via hole 323 that supplies protective sheath 310 to pass on the cover 320, the axial of via hole sets up with left right direction is perpendicular, supports the outside that the protective sheath was located to the cover through the cooperation cover of via hole 323 and protective sheath.
In order to meet the requirements of rotation and protection on a power line, the support sleeve 320 comprises a main body 321 and an extension part 322, the main body 321 extends in the left-right direction and is columnar, the extension part 322 surrounds the via hole 323 and protrudes from the main body 321 to the wire passing hole 101 to form and extend into the wire passing hole 101, the thickness of the extension part 322 is smaller than that of the main body 321 in the left-right direction, the contact area between the protective sleeve and the inner wall of the wire passing hole is reasonably reduced through the extension part, and therefore friction and extrusion between the protective sleeve and a machine shell are reduced.
The rotation fit structure is disposed between the main body 321 and the casing 100, and includes a support shaft 324 disposed on the main body 321 and a support hole disposed on an inner wall of the casing 100, and the support shaft 324 is in clearance fit with the support hole. In this embodiment, the supporting shaft 324 is symmetrically provided with two sections, the two sections of supporting shaft are formed by protruding outwards along the same axial direction parallel to the left-right direction, one section of supporting shaft 324 is formed by protruding leftwards from the left end surface of the main body 321, and the other section of supporting shaft 324 is formed by protruding rightwards from the right end surface of the main body 321. The support sleeve 320 is disposed in the handle, a left support hole 112 for inserting the left support shaft is formed on the inner wall of the left handle case 111, and a right support hole 122 for inserting the right support shaft is formed on the inner wall of the right handle case 121. When the left and right housings 110, 120 are assembled and fixed, the left support shaft 324 is inserted into the left support hole 112, the right support shaft 324 is inserted into the right support hole 122, the support sleeve 320 and the casing 100 are rotatably engaged, and the support sleeve 320 can rotate back and forth relative to the casing 100 in a plane perpendicular to the left-right direction.
Referring to fig. 4 and 5, the main body 321 has a D-shaped cross section perpendicular to the left-right direction, and a first arc-shaped surface 325 is provided on the outer periphery of the main body 321. One end of the protective sleeve 310 is located in the casing 100, and the cross section of the end surface of the end portion perpendicular to the left-right direction is arc-shaped, that is, the end portion of the protective sleeve 310 located in the casing 100 is provided with a second arc-shaped surface 312, the axial lines of the second arc-shaped surface 312 and the first arc-shaped surface 325 are both coincided with the axial line of the supporting shaft 324, and the second arc-shaped surface and the first arc-shaped surface are combined to form a substantially cylindrical surface. In order to improve the stability of the running fit, the inner wall of the left handle shell 111 is provided with a left limiting convex rib 113 located at the periphery of the first and second arc-shaped surfaces 325 and 312, the inner wall of the right handle shell 121 is provided with a right limiting convex rib 123 located at the periphery of the first and second arc-shaped surfaces 325 and 312, the left and right limiting convex ribs 113 and 123 are both arc-shaped, the left and right limiting convex ribs 113 and 123 are matched to form a limiting convex rib located at the periphery of the first and second arc-shaped surfaces, and the protective sleeve 310 and the support sleeve 320 are limited in the radial direction.
In order to improve the stability of the protection sleeve 310, a circle of positioning step 313 is arranged on the circumferential outer wall of the end part of the protection sleeve 310 located in the casing 100, and the end surface of the support sleeve 320 far away from the wire passing hole 101 abuts against the positioning step 313 to enable the protection sleeve 310 to be limited in the axial direction, so that the protection sleeve 310 is prevented from being separated from the casing 100 from the wire passing hole 101 under the stress.
Referring to fig. 5, the power cord protection device 300 can rotate the power cord 200 relative to the housing 100 in a plane perpendicular to the left-right direction. When the power tool is not in use, the power cord protection device 300 is in the position shown by the solid line in the figure, and the protection sleeve 310 is in the folded state relative to the housing 100, which is beneficial to reasonably reducing the overall dimension of the power tool, so that the power tool is convenient to package and transport. In the use state of the power tool, the power cord protection device 300 is located at the position shown by the dotted line in the figure, and the protection cover 310 is in the unfolded state relative to the housing 100, so that the power cord 200 can be connected and a user can hold the handle conveniently. The rotation of the supporting sleeve 320 relative to the casing 100 from the fully folded state to the fully unfolded state is the maximum angle α of the rotation of the supporting sleeve, in this embodiment, α is greater than or equal to 60 ° and less than or equal to 180 °. Specifically, the maximum angle α of rotation of the support sleeve 320 in this embodiment is preferably set to 90 °, that is, the angle of rotation of the support sleeve 320 from the fully collapsed state to the fully expanded state is 90 °.
The embodiment of the utility model provides a still provides an electric tool, including casing 100 and power cord 200, in casing 100 was located to the one end of power cord 200, be equipped with on casing 100 and supply power cord 200 to wear through cross line hole 101, electric tool still includes the power cord protection device 300 of above-mentioned record.
In order to improve the stability of the power line 200 in the housing 100, the inner wall of the housing 100 is provided with the paired positioning ribs 102, a positioning slot interference-fitted with the power line 200 is formed between the paired positioning ribs 102, and a part of the power line 200 is clamped in the positioning slot. In this embodiment, the positioning rib 102 is disposed on the inner wall of the left handle shell portion and is substantially C-shaped.
The elastic protective sleeve can prevent the power line from being extruded and abraded due to the contact with the shell, and the protection purpose is achieved. The outside of protective sheath is located to rigid support cover, supports to set up normal running fit structure between cover and the casing, realizes through supporting the cover that the protective sheath can be for casing pivoted purpose, and the protective sheath can expand or draw in for the casing, better satisfying packing, transportation requirement when making the protective sheath satisfy the protection requirement. Because the supporting sleeve is in rigid fit with the casing, the supporting sleeve cannot be separated from the casing due to deformation caused by stress in the rotating process, the whole stability of the power line protection device is favorably improved, and the use experience of a user is favorably improved.
It is understood that the positions of the supporting shaft and the supporting hole can be interchanged, that is, the supporting shaft is disposed on the inner wall of the left and right housings 110, 120, the supporting hole is disposed on the supporting sleeve 320, and after the left and right housings 110, 120 are assembled together, the supporting shaft is inserted into the supporting hole on the supporting sleeve, so as to achieve the rotation fit installation between the supporting sleeve and the casing.
It can be understood that the maximum angle α of the rotation of the support sleeve 320 relative to the housing 100 can also be set to reasonable angle values of 60 °, 70 °, 80 °, 85 °, 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 130 °, 140 °, 150 °, 160 °, 170 °, 180 °, and the like.
It will be appreciated that the positioning ribs 102 may also be provided on the inner wall of the right housing.
It is understood that the wire through hole 101 may be disposed at other positions of the housing 100, and accordingly, the power cord protection device 300 may be disposed at other positions of the housing, and is not limited to the handle described above and shown in the drawings.
In addition to the above preferred embodiments, the present invention has other embodiments, and those skilled in the art can make various changes and modifications according to the present invention without departing from the spirit of the present invention, which should fall within the scope defined by the appended claims.
Claims (10)
1. The utility model provides a power cord protection device for electric tool, electric tool includes casing and power cord, and in the casing was located to the one end of power cord, be equipped with the line hole of crossing that supplies the power cord to wear through on the casing, its characterized in that, power cord protection device includes elastic protective sheath and rigid support cover, and the outside of power cord is located to the protective sheath cover and wears to locate line hole department, supports the outside of protective sheath cover and locates the casing and be located the casing, supports to be equipped with the normal running fit structure between cover and the casing.
2. The power cord protection device as claimed in claim 1, wherein the rotation fitting structure comprises a support shaft disposed on the support sleeve and a support hole disposed on the inner wall of the housing, the support shaft being in clearance fit with the support hole; or the rotating fit structure comprises a support shaft arranged on the inner wall of the shell and a support hole arranged on the support sleeve, and the support shaft is in clearance fit with the support hole.
3. The power cord protection device as claimed in claim 2, wherein the support shaft has two symmetrical sections, and the two sections are formed to protrude in the same axial direction.
4. The power cord protection device as claimed in claim 3, wherein the housing comprises a left housing and a right housing which are engaged with each other, and the protruding direction of the support shaft is aligned with the assembling direction of the left and right housings.
5. The power cord protector as claimed in claim 1, wherein the support sleeve comprises a main body portion and an extension portion, the rotation fit structure is disposed between the main body portion and the housing, the extension portion protrudes from the main body portion to the wire passing hole and extends into the wire passing hole, and the thickness of the extension portion is smaller than that of the main body portion.
6. The power cord protection device as claimed in claim 1, wherein the supporting sleeve has a first arc-shaped surface on the circumferential outer wall, one end of the protecting sleeve is disposed in the casing and the end of the protecting sleeve has a second arc-shaped surface, and the inner wall of the casing has a limiting rib disposed around the first and second arc-shaped surfaces and in an arc shape.
7. The power cord protection device as claimed in claim 1, wherein one end of the protection sleeve is disposed in the housing and has a positioning step on its outer periphery, and one end of the support sleeve abuts against the positioning step.
8. The power cord protection device according to any one of claims 1 to 7, wherein the support sleeve is rotated with respect to the housing by a maximum angle α, 60 ° ≦ α ≦ 180 °.
9. An electric tool comprising a housing and a power cord, one end of the power cord being disposed in the housing, the housing being provided with a cord passing hole through which the power cord passes, characterized in that the electric tool further comprises the power cord protection device for an electric tool as set forth in any one of claims 1 to 8.
10. The electric tool according to claim 9, wherein the inner wall of the housing is provided with a pair of positioning ribs, a positioning slot that is in interference fit with the power cord is formed between the pair of positioning ribs, and a part of the power cord is clamped in the positioning slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895308.1U CN211681918U (en) | 2019-11-05 | 2019-11-05 | Power line protection device for electric tool and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921895308.1U CN211681918U (en) | 2019-11-05 | 2019-11-05 | Power line protection device for electric tool and electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211681918U true CN211681918U (en) | 2020-10-16 |
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ID=72786306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921895308.1U Active CN211681918U (en) | 2019-11-05 | 2019-11-05 | Power line protection device for electric tool and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211681918U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446706A (en) * | 2022-08-29 | 2022-12-09 | 浙江明磊锂能源科技股份有限公司 | Shell assembly of electric tool and electric tool |
-
2019
- 2019-11-05 CN CN201921895308.1U patent/CN211681918U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115446706A (en) * | 2022-08-29 | 2022-12-09 | 浙江明磊锂能源科技股份有限公司 | Shell assembly of electric tool and electric tool |
| CN115446706B (en) * | 2022-08-29 | 2024-04-23 | 浙江明磊锂能源科技股份有限公司 | Electric tool |
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| CP03 | "change of name, title or address" | ||
| CP03 | "change of name, title or address" |
Address after: 321035 Industrial Development Zone, Xiaoshun Town, Jindong District, Jinhua City, Zhejiang Province Patentee after: Zhejiang Prade Electric Co.,Ltd. Address before: 321035 Zhejiang Prade Electric Appliance Co., Ltd., Xiaoshun Town Industrial Development Zone, Jindong District, Jinhua City, Zhejiang Province Patentee before: Zhejiang Prulde Electric Appliance Co.,Ltd. |