CN219666440U - Switching structure for electric wrench - Google Patents
Switching structure for electric wrench Download PDFInfo
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- CN219666440U CN219666440U CN202320547295.9U CN202320547295U CN219666440U CN 219666440 U CN219666440 U CN 219666440U CN 202320547295 U CN202320547295 U CN 202320547295U CN 219666440 U CN219666440 U CN 219666440U
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- prism
- sleeve
- main shaft
- tail end
- head end
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- 230000006872 improvement Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The utility model belongs to the technical field of hardware tools, and discloses a switching structure for an electric wrench. The inner shaft comprises a first prism, a main shaft and a second prism, and the outer diameters of the main shaft, the driving prism, the first prism and the second prism are sequentially reduced. The outer tube includes head end arris cover, is responsible for and tail end arris cover, is responsible for the cover and establishes outside the main shaft, and interlock in circumference with the main shaft, in axial sliding fit, first prism extends to in the head end arris cover, and the second prism extends to in the tail end arris cover, and head end arris cover and tail end arris cover's internal diameter equals the external diameter of driving prism, and head end arris cover and tail end arris cover are configured to alternatively overlap and establish on driving prism. The main shaft is less than the length of main pipe, and first prism is greater than the length of head end prism cover, and the second prism is greater than the length of tail end prism cover, and the sum of first prism and main shaft length is less than the sum of head end prism cover and main pipe, and the sum of second prism and main shaft length is less than the sum of tail end prism cover and main pipe length.
Description
Technical Field
The utility model relates to the technical field of hardware tools, in particular to a switching structure for an electric wrench.
Background
Many devices in steel works are fastened by countersunk bolts, and electric wrenches are often used in the prior art for disassembling and assembling the countersunk bolts.
The head end of the electric spanner is provided with a driving prism, and the driving prism is generally matched with the countersunk head bolt for dismounting the countersunk head bolt. However, some devices have countersunk bolts in grooves or in elongated gaps, and the drive prisms of the power wrench are short, and often cannot extend to the countersunk bolts under the blocking of the power wrench handle. Moreover, the countersunk head sizes of countersunk head bolts are not the same, and driving prisms with different sizes are required to be used for disassembly and assembly.
Disclosure of Invention
The utility model aims to provide an adapter structure for an electric wrench, which is convenient to connect with the electric wrench and extend to a gap for dismounting a countersunk head fastener, and also provides a connecting prism with two specifications, which has a simple structure and fewer parts.
To achieve the purpose, the utility model adopts the following technical scheme:
a switching structure for electric spanner, electric spanner is equipped with the drive prism, includes:
the inner shaft comprises a first prism, a main shaft and a second prism which are fixedly connected in sequence and are coaxial, and the outer diameters of the main shaft, the driving prism, the first prism and the second prism are reduced in sequence;
the outer tube comprises a head end prism sleeve, a main tube and a tail end prism sleeve which are fixedly connected and coaxial in sequence, the main tube sleeve is arranged outside the main shaft and interlocked with the main shaft in the circumferential direction and in sliding fit in the axial direction, the first prism extends from the main shaft into the head end prism sleeve, the second prism extends from the main shaft into the tail end prism sleeve, the inner diameters of the head end prism sleeve and the tail end prism sleeve are equal to the outer diameter of the driving prism, and the head end prism sleeve and the tail end prism sleeve are configured to be alternatively sleeved on the driving prism;
the length of the main shaft is smaller than that of the main pipe, the length of the first prism is larger than that of the head end prism sleeve, the length of the second prism is larger than that of the tail end prism sleeve, the sum of the lengths of the first prism and the main shaft is smaller than that of the head end prism sleeve and the main pipe, and the sum of the lengths of the second prism and the main shaft is smaller than that of the tail end prism sleeve and the main pipe.
Optionally, a guide groove extending along the axial direction of the main shaft is formed in the main shaft, a protrusion is arranged on the main pipe, and the protrusion is slidably embedded in the guide groove.
Optionally, the end face of the head end edge sleeve, which is close to the main pipe, is provided with a first buffer gasket, the end face of the tail end edge sleeve, which is close to the main pipe, is provided with a second buffer gasket, and the main shaft is slidably arranged between the first buffer gasket and the second buffer gasket.
Optionally, the end face of the head end edge sleeve, which is close to the main pipe, is provided with a first annular groove, the first buffer gasket is arranged in the first annular groove and protrudes out of the first annular groove, the end face of the tail end edge sleeve, which is close to the main pipe, is provided with a second annular groove, and the second buffer gasket is arranged in the second annular groove and protrudes out of the second annular groove.
Optionally, the device further comprises a tightening sleeve configured to be alternatively and detachably sleeved outside the head end edge sleeve or the tail end edge sleeve.
Optionally, the tightening sleeve is screwed to the head end or the tail end sleeve.
Optionally, the first prism and the second prism are the same in length, and the leading and trailing prism sleeves are the same in length.
Optionally, the outer diameter of the driving prism is 25mm, the outer diameter of the first prism is 19mm, and the outer diameter of the second prism is 12.5mm.
Optionally, the cross sections of the driving prism, the first prism and the second prism are hexagonal or square.
Optionally, the head end cuff, the main tube and the tail end cuff have the same outer diameter.
The beneficial effects are that:
the head end prism and the tail end prism at two ends of the electric wrench switching structure can be connected to the driving prism of the electric wrench, so that the first prism and the second prism are alternatively used as the connecting ends of the countersunk head bolts, and the countersunk head bolts are disassembled and assembled. The switching structure is simple in structure, is suitable for a narrow space, and improves the application range of the electric wrench. The different outer diameter sizes of the first prism and the second prism improve the compatibility of the switching structure.
Drawings
FIG. 1 is a schematic view of an inner shaft of an adapter structure for an electric wrench according to an embodiment of the present utility model;
FIG. 2 is a schematic view of an outer tube of an adapter structure for an electric wrench according to an embodiment of the present utility model;
fig. 3 is a schematic view of an adapter structure (a first prism in an extended state) for an electric wrench according to an embodiment of the present utility model;
fig. 4 is a schematic view of an adapter structure (when the second prism is in an extended state) for an electric wrench according to an embodiment of the present utility model.
In the figure: 100. a guide groove; 101. a protrusion;
1. an inner shaft; 11. a first prism; 12. a main shaft; 13. a second prism;
2. an outer tube; 21. a head end edge sleeve; 22. a main pipe; 23. and a tail end edge sleeve.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1-4, the present embodiment provides an adapter structure for an electric wrench, where the electric wrench is provided with a driving prism, and the driving prism can be matched with a countersunk fastener with a corresponding size, so as to disassemble and assemble the countersunk fastener, such as a countersunk bolt or a countersunk screw. Specifically, the transit structure includes an inner shaft 1 and an outer tube 2.
As shown in fig. 1 and 2, the inner shaft 1 includes a first prism 11, a main shaft 12, and a second prism 13 which are fixedly connected in sequence and are coaxial, and outer diameters of the main shaft 12, the driving prism, the first prism 11, and the second prism 13 are sequentially reduced. The outer tube 2 comprises a head end prism sleeve 21, a main tube 22 and a tail end prism sleeve 23 which are fixedly connected and coaxial in sequence, the main tube 22 is sleeved outside the main shaft 12 and interlocked with the main shaft 12 in the circumferential direction, the first prism 11 is in sliding fit in the axial direction, the first prism 11 extends into the head end prism sleeve 21 from the main shaft 12, the second prism 13 extends into the tail end prism sleeve 23 from the main shaft 12, the inner diameters of the head end prism sleeve 21 and the tail end prism sleeve 23 are equal to the outer diameters of the driving prisms, and the head end prism sleeve 21 and the tail end prism sleeve 23 are configured to be alternatively sleeved on the driving prisms.
As shown in fig. 3 and 4, the length of the main shaft 12 is smaller than the length of the main pipe 22, the length of the first prism 11 is larger than the length of the head end prism 21, the length of the second prism 13 is larger than the length of the tail end prism 23, the sum of the lengths of the first prism 11 and the main shaft 12 is smaller than the sum of the lengths of the head end prism 21 and the main pipe 22, and the sum of the lengths of the second prism 13 and the main shaft 12 is smaller than the sum of the lengths of the tail end prism 23 and the main pipe 22.
As shown in fig. 3, the driving prism of the electric wrench is inserted and fixed in the tail end prism sleeve 23, the driving prism pushes the inner shaft 1 to slide, and since the main shaft 12 is larger than the inner diameter of the head end prism sleeve 21, the main shaft 12 abuts against the end of the head end prism sleeve 21 after sliding for a certain stroke, and at this time, the inner shaft 1 is limited by the driving prism and the head end prism sleeve 21, so as to realize relative fixation with the outer tube 2 in the axial direction, and the first prism 11 extends out of the first prism sleeve. The driving prism of the electric wrench rotates, and the inner shaft 1 is driven to rotate through the outer tube 2, so that the first prism 11 rotates, and the countersunk head bolts with corresponding sizes can be assembled and disassembled by the first prism 11.
As shown in fig. 4, the driving prism of the electric wrench is inserted and fixed in the head prism, the driving prism drives the inner shaft 1 to slide, and since the main shaft 12 is larger than the inner diameter of the tail end prism sleeve 23, the main shaft 12 abuts against the end of the tail end prism sleeve 23 after sliding for a certain stroke, and at this time, the inner shaft 1 is limited by the driving prism and the tail end prism sleeve 23, so as to realize relative fixation with the outer tube 2 in the axial direction, and the second prism 13 extends out of the second prism sleeve. The driving prism of the electric wrench rotates, and the outer tube 2 drives the inner shaft 1 to rotate, so that the second prism 13 rotates, and the countersunk head bolts with corresponding sizes can be assembled and disassembled by the second prism 13.
The head prism and the tail prism at two ends of the electric wrench switching structure provided by the embodiment can be connected to the driving prism of the electric wrench, so that the first prism 11 and the second prism 13 are alternatively used as the connecting ends of the countersunk bolts, and the countersunk bolts are disassembled and assembled. The electric wrench has the advantages of fewer parts, simple structure, suitability for narrow space and improvement of the application range of the electric wrench.
As shown in fig. 1-4, alternatively, the main shaft 12 is provided with a guide groove 100 extending along the axial direction thereof, the main pipe 22 is provided with a protrusion 101, and the protrusion 101 is slidably embedded in the guide groove 100. In this embodiment, the protrusions 101 and the guide grooves 100 are provided in plural numbers, so as to limit the position between the main shaft 12 and the main pipe 22, ensure that the two can slide relatively, and avoid the two from rotating relatively.
Optionally, the end face of the head end edge sleeve 21, which is close to the main pipe 22, is provided with a first buffer gasket, the end face of the tail end edge sleeve 23, which is close to the main pipe 22, is provided with a second buffer gasket, and the main shaft 12 is slidably arranged between the first buffer gasket and the second buffer gasket. When the outer tube 2 drives the inner tube to rotate, the first buffer gasket and the second buffer gasket can buffer the stress between the main shaft 12 and the limiting end face of the main shaft. In this embodiment, the first buffer gasket and the second buffer gasket are both rubber rings or silicone rings.
In order to limit the first buffer gasket and the second buffer gasket, optionally, the end face of the head end edge sleeve 21, which is close to the main pipe 22, is provided with a first annular groove, the first buffer gasket is arranged in the first annular groove and protrudes out of the first annular groove, the end face of the tail end edge sleeve 23, which is close to the main pipe 22, is provided with a second annular groove, and the second buffer gasket is arranged in the second annular groove and protrudes out of the second annular groove.
Optionally, a lacing sleeve is also included and configured to alternatively and removably nest outside of either the leading 21 or trailing 23 ribs. When the second prism 13 is used as the connecting end of the countersunk head bolt, the driving prism is inserted into the head end prism sleeve 21, and the tightening hoop is arranged outside the head end prism sleeve 21, so that the driving prism is connected with the head end prism sleeve 21 more tightly. When the first prism 11 is used as the connecting end of the countersunk head bolt, the driving prism is inserted into the tail end prism sleeve 23, and the tightening hoop is arranged outside the tail end prism sleeve 23, so that the driving prism is connected with the tail end prism sleeve 23 more tightly. In this embodiment, the head-end rib sleeve 21 and the tail-end rib sleeve 23 are externally provided with threads, and the tightening sleeve is in threaded connection with the head-end rib sleeve 21 or the tail-end rib sleeve 23.
Alternatively, first prism 11 and second prism 13 are the same length, and leading and trailing prism cases 21 and 23 are the same length. Such that the first prism 11 extends beyond the head-end prism 21 and the second prism 13 extends beyond the tail-end prism 23 by the same dimension.
Alternatively, the outer diameter of the driving prisms is 25mm, the outer diameter of the first prisms 11 is 19mm, and the outer diameter of the second prisms 13 is 12.5mm.
Alternatively, the driving prisms, the first prisms 11, and the second prisms 13 have hexagonal or square cross sections to disassemble the corresponding socket head bolts or the socket head bolts.
In this embodiment, the head-end and tail-end bushings 21, 22, 23 have the same outer diameter. In this embodiment, the outer tube 2 has an outer diameter of 40mm and a length of 100mm.
It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the utility model. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (10)
1. A switching structure for electric spanner, electric spanner is equipped with the drive prism, its characterized in that includes:
the inner shaft (1) comprises a first prism (11), a main shaft (12) and a second prism (13) which are fixedly connected and coaxial in sequence, wherein the outer diameters of the main shaft (12), the driving prism, the first prism (11) and the second prism (13) are reduced in sequence;
the outer tube (2) comprises a head end prism sleeve (21), a main tube (22) and a tail end prism sleeve (23) which are fixedly connected and coaxial in sequence, wherein the main tube (22) is sleeved outside the main shaft (12) and interlocked with the main shaft (12) in the circumferential direction, the first prism (11) extends from the main shaft (12) into the head end prism sleeve (21), the second prism (13) extends from the main shaft (12) into the tail end prism sleeve (23), the inner diameters of the head end prism sleeve (21) and the tail end prism sleeve (23) are equal to the outer diameter of the driving prism, and the head end prism sleeve (21) and the tail end prism sleeve (23) are configured to be alternatively sleeved on the driving prism;
the length of the main shaft (12) is smaller than that of the main pipe (22), the length of the first prism (11) is larger than that of the head end prism sleeve (21), the length of the second prism (13) is larger than that of the tail end prism sleeve (23), the sum of the lengths of the first prism (11) and the main shaft (12) is smaller than that of the head end prism sleeve (21) and the main pipe (22), and the sum of the lengths of the second prism (13) and the main shaft (12) is smaller than that of the tail end prism sleeve (23) and the main pipe (22).
2. The switching structure for an electric wrench according to claim 1, wherein the main shaft (12) is provided with a guide groove (100) extending along an axial direction thereof, the main tube (22) is provided with a protrusion (101), and the protrusion (101) is slidably embedded in the guide groove (100).
3. The switching structure for an electric wrench according to claim 1, wherein a first buffer washer is provided on an end surface of the head end sleeve (21) adjacent to the main pipe (22), a second buffer washer is provided on an end surface of the tail end sleeve (23) adjacent to the main pipe (22), and the main shaft (12) is slidably provided between the first buffer washer and the second buffer washer.
4. A switching structure for an electric wrench according to claim 3, wherein the end face of the head end edge sleeve (21) adjacent to the main pipe (22) is provided with a first annular groove, the first buffer gasket is disposed in the first annular groove and protrudes from the first annular groove, the end face of the tail end edge sleeve (23) adjacent to the main pipe (22) is provided with a second annular groove, and the second buffer gasket is disposed in the second annular groove and protrudes from the second annular groove.
5. The switching structure for an electric wrench according to claim 1, further comprising a tightening sleeve configured to be alternatively and detachably sleeved outside the head end sleeve (21) or the tail end sleeve (23).
6. The switching structure for an electric wrench according to claim 5, wherein the tightening sleeve is screw-coupled to the head end sleeve (21) or the tail end sleeve (23).
7. The switching structure for an electric wrench according to claim 1, wherein the first prism (11) and the second prism (13) have the same length, and the head end sleeve (21) and the tail end sleeve (23) have the same length.
8. The switching structure for an electric wrench according to claim 1, wherein the outer diameter of the driving prism is 25mm, the outer diameter of the first prism (11) is 19mm, and the outer diameter of the second prism (13) is 12.5mm.
9. The switching structure for an electric wrench according to claim 1, wherein the driving prism, the first prism (11) and the second prism (13) are hexagonal or square in cross section.
10. The switching structure for an electric wrench according to claim 1, wherein the head end sleeve (21), the main pipe (22) and the tail end sleeve (23) have the same outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320547295.9U CN219666440U (en) | 2023-03-20 | 2023-03-20 | Switching structure for electric wrench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320547295.9U CN219666440U (en) | 2023-03-20 | 2023-03-20 | Switching structure for electric wrench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219666440U true CN219666440U (en) | 2023-09-12 |
Family
ID=87927595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320547295.9U Active CN219666440U (en) | 2023-03-20 | 2023-03-20 | Switching structure for electric wrench |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219666440U (en) |
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2023
- 2023-03-20 CN CN202320547295.9U patent/CN219666440U/en active Active
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