CN110193618A - Hand-held angular bit - Google Patents
Hand-held angular bit Download PDFInfo
- Publication number
- CN110193618A CN110193618A CN201910400526.1A CN201910400526A CN110193618A CN 110193618 A CN110193618 A CN 110193618A CN 201910400526 A CN201910400526 A CN 201910400526A CN 110193618 A CN110193618 A CN 110193618A
- Authority
- CN
- China
- Prior art keywords
- bevel gear
- drill
- drill bit
- shaft
- housing portion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 49
- 230000007246 mechanism Effects 0.000 abstract description 24
- 230000001154 acute effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B45/00—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor
- B23B45/02—Hand-held or like portable drilling machines, e.g. drill guns; Equipment therefor driven by electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The present invention relates to electric drill technical fields, and in particular to a kind of hand-held angular bit.Present invention seek to address that the transmission mechanism technical problem that structure is complicated, transmission efficiency is low of hand-held angular bit.For this purpose, the present invention provides a kind of hand-held angular bits, hand-held angular bit includes casing, driving device, bevel gear system and drill bit assembly, casing includes handle shell portion and drill bit shell portion, driving device is set in handle shell portion, drill bit assembly is set at drill bit shell portion and stretches out drill bit shell portion, and driving device drives drill bit assembly by bevel gear system.Driving device in hand-held angular bit of the invention drives drill bit assembly by bevel gear system, not only simplify the transmission mechanism of hand-held angular bit, also improve the transmission efficiency of driving device, simultaneously, bevel gear system can share the part axial force of drill bit assembly, and the axial force for reducing drill bit assembly directly acts on the phenomenon that damaging driving device to driving device.
Description
Technical Field
The invention relates to the technical field of electric drills, in particular to a handheld angle drill.
Background
This section provides background information related to the present disclosure only and is not necessarily prior art.
The handheld angle drill has unique shell structure and inside actuating mechanism for the electric drill, and unique shell can make the handheld angle drill be used for the drilling operation in narrow space, and unique inside actuating mechanism can improve the compact structure nature of handheld angle drill, reduces the whole volume of handheld angle drill to make the handheld angle drill can be applicable to narrow operation space.
Although the existing handheld angle drill can achieve the purpose of miniaturization by designing a shell structure and an internal driving mechanism, the driving mechanism of the existing handheld angle drill often transmits driving force to a drill bit through a planetary gear train, and the planetary gear train can only achieve the effect of transmitting the driving force in the horizontal direction, so the planetary gear train has higher requirements on the distribution positions of the driving mechanism and the drill bit, for example, the driving mechanism, the planetary gear train and the drill bit of the existing handheld angle drill are generally intensively distributed at the head of the handheld angle drill, the distribution mode not only causes the crowding phenomenon of the head space of the handheld angle drill, but also increases the assembly difficulty of the driving mechanism, the planetary gear train and the drill bit, and further, the crowded driving mechanism, the planetary gear train and the drill bit can influence the transmission efficiency of the driving mechanism under the comprehensive action of axial force and circumferential force, even the phenomenon that the axial force of the drill bit is transmitted to the driving mechanism through the planetary gear train to cause the driving mechanism to break down occurs, and the service life of the handheld angle drill is greatly shortened.
Disclosure of Invention
The present invention is directed to a hand-held angle drill that addresses at least one of the problems set forth above.
The invention provides a handheld angle drill which comprises a casing, a driving device, a bevel gear system and a drill bit assembly, wherein the casing comprises a handle shell and a drill bit shell, the driving device is arranged in the handle shell, the drill bit assembly is arranged at the drill bit shell and extends out of the drill bit shell, and the driving device drives the drill bit assembly through the bevel gear system.
The driving device in the handheld angle drill drives the drill bit assembly through the bevel gear system, so that the transmission mechanism of the handheld angle drill is simplified, and the driving efficiency of the driving device is improved. Particularly, compared with the existing driving device for the handheld angle drill, the driving device for the handheld angle drill drives the drill bit assembly through the planetary gear train, the driving device for the handheld angle drill drives the drill bit assembly through the bevel gear train, and the bevel gear train can greatly reduce the structural complexity of the transmission mechanism and reduce the phenomena of difficult assembly, easy failure and short service life of the transmission mechanism caused by the structural complexity of the transmission mechanism. Furthermore, the driving device drives the drill bit assembly through the bevel gear train, the bevel gear train can share part of the axial force of the drill bit assembly, and the phenomenon that the axial force of the drill bit assembly directly acts on the driving device to damage the driving device is reduced.
Further, drive arrangement includes driving motor and the transmission shaft of being connected with driving motor's output shaft, and the drill bit subassembly includes the drive shaft and sets up the drill bit in the drive shaft, and the bevel gear train includes first bevel gear and the second bevel gear with first bevel gear meshing, and first bevel gear sets up in the output of transmission shaft, and the second bevel gear sets up in the input of drive shaft.
Further, the transmission shaft and the first bevel gear are of an integrated structure.
Further, the transmission shaft is arranged on the handle shell, the driving shaft is arranged on the drill bit shell, and an included angle between the axis of the transmission shaft and the axis of the driving shaft is an obtuse angle.
Further, handheld angle drill is still including installing in the mounting bracket of casing, and the one end of mounting bracket is provided with the first bearing that is used for supporting the transmission shaft, and the other end of mounting bracket is provided with the second bearing that is used for supporting the drive shaft.
Further, the first bevel gear and the second bevel gear are arranged in the mounting frame.
Furthermore, the included angle between the handle shell part and the drill bit shell part is an obtuse angle, the driving device is installed in the handle shell part along the length direction of the handle shell part, and the driving shaft is installed on the drill bit shell part along the length direction of the drill bit shell part.
Further, the grip shell portion and the bit shell portion are an integrated shell structure, and the integrated shell structure comprises a first shell and a second shell which can be assembled together.
Furthermore, a handle part is arranged at the joint between the handle shell part and the drill bit shell part, and a button is arranged at the handle part.
Furthermore, the handheld angle drill further comprises a first bevel gear arranged at the output end of the output shaft, and a second bevel gear meshed with the first bevel gear is arranged at the input end of the transmission shaft.
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 invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural view of a handheld angle drill according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a transmission mechanism in the handheld angle drill shown in fig. 1.
Fig. 3 is a schematic structural view of a transmission shaft and a first bevel gear in the transmission mechanism shown in fig. 2.
Fig. 4 is a schematic view of a second bevel gear of the transmission mechanism of fig. 2.
Wherein,
100. holding an angle drill by hand; 11. a grip shell portion; 12. a bit shell portion; 13. pressing a key;
20. a drive motor; 21. an output shaft; 211. a first helical gear; 22. a drive shaft; 221. a second helical gear;
31. a first bevel gear; 32. a second bevel gear;
41. a drill bit; 42. a drive shaft;
50. and (7) mounting frames.
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 should be noted that the bevel gear train and the arrangement of the bevel gear train of the present invention are only one preferred embodiment and are not intended to limit the application scope of the bevel gear train of the present invention, for example, the bevel gear train and the arrangement of the bevel gear train of the present invention may also be used in other apparatuses having similar structures, such as a handheld angle grinder, etc., and such adjustment does not depart from the protection scope of the bevel gear train and the arrangement of the bevel gear train of the present invention.
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 "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, elements, and/or components, but do not preclude the presence or addition of one or more other features, elements, components, and/or groups thereof.
Although the terms first, second, 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. In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be construed broadly, e.g., as a fixed connection, a removable connection, or an integral connection; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
For convenience of description, spatially relative terms, such as "longitudinally" and "end," 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, 2, 3 and 4, according to an embodiment of the present invention, a handheld angle drill 100 includes a housing, a driving device, a bevel gear train and a drill head assembly, specifically, the housing includes a grip shell 11 and a drill head shell 12, the grip shell 11 and the drill head shell 12 form an integrated housing structure, an included angle between the grip shell 11 and the drill head shell 12 is an obtuse angle α, a grip portion is disposed at a connection between the grip shell 11 and the drill head shell 12, a button 13 is disposed at the grip portion, the driving device is mounted in the grip shell 11 along a length direction of the grip shell 11, the drill head assembly is mounted at the drill head shell 12 along the length direction of the drill head shell 12 and extends out of the drill head shell 12, and since the included angle between the grip shell 11 and the drill head shell 12 is an obtuse angle α, an included angle between the driving device and the drill head assembly is also an obtuse angle α.
The driving device in the handheld angle drill 100 drives the drill bit assembly through the bevel gear system, so that the transmission mechanism of the handheld angle drill 100 can be simplified, and the driving efficiency of the driving device can be improved. Specifically, compared with the existing driving device for the handheld angle drill 100 which drives the drill bit assembly through the planetary gear train, the driving device for the handheld angle drill 100 of the invention drives the drill bit assembly through the bevel gear train, and the bevel gear train can greatly reduce the structural complexity of the transmission mechanism and reduce the phenomena of difficult assembly, easy failure and short service life of the transmission mechanism caused by the structural complexity of the transmission mechanism. Furthermore, the driving device drives the drill bit assembly through the bevel gear train, so that the transmission efficiency of the driving device can be improved, the energy loss in the process of driving the drill bit assembly by the driving device is reduced, specifically, the bevel gear train not only can adjust the transmission direction of the driving force of the driving device, but also can bear the axial force of the drill bit assembly during working, and the phenomenon that the driving device is damaged when the axial force generated during working of the drill bit assembly is transmitted to the driving device is reduced.
With continuing reference to fig. 1, 2, 3 and 4, according to an embodiment of the present invention, the driving device includes a driving motor 20 and a transmission shaft 22 connected to an output shaft 21 of the driving motor 20, the drill head assembly includes a driving shaft 42 and a drill 41 disposed on the driving shaft 42, the bevel gear train includes a first bevel gear 31 and a second bevel gear 32 engaged with the first bevel gear 31, the first bevel gear 31 is disposed at an output end of the transmission shaft 22, and the second bevel gear 32 is disposed at an input end of the driving shaft 42. Specifically, the transmission shaft 22 of the present embodiment not only plays a role of transmitting driving force, but also increases the distance between the driving device and the drill bit assembly, so that the driving device and the drill bit assembly can be dispersed at different positions in the casing, and the difficulty in mounting the driving device and the drill bit 41 is reduced. Further, the transmission shaft 22 can share a part of the axial force of the drill bit 41 when the handheld angle drill 100 is in operation, so that the phenomenon that the axial force generated by the drill bit assembly is directly transmitted to a driving device to damage the driving device is reduced.
With continued reference to fig. 1, 2, 3, and 4, the drive shaft 22 is of a unitary construction with the first bevel gear 31, in accordance with an embodiment of the present invention. The transmission shaft 22 of the present embodiment is connected to the first bevel gear 31 and the driving device, so the first bevel gear 31 of the present embodiment is an output gear, and the second bevel gear 32 of the present embodiment is an input gear, in order to enable the bevel gear train to achieve a speed reduction effect, the first bevel gear 31 of the present embodiment has a small volume (i.e., has a small number of teeth), in order to improve the transmission stability between the first bevel gear 31 and the transmission shaft 22, the transmission shaft 22 and the first bevel gear 31 are configured as an integrated structure, and because the first bevel gear 31 has a small volume, the transmission shaft 22 and the first bevel gear 31 are configured as an integrated structure, thereby reducing the waste of materials to the maximum extent on the premise of improving the transmission stability between the first bevel gear 31 and the transmission shaft 22. Further, in order to achieve the purpose of reducing the rotation speed of the driving device, the handheld angle drill 100 further includes a first bevel gear 211 disposed on the output shaft 21 of the driving device, and the input end of the transmission shaft 22 is provided with a second bevel gear 221 engaged with the first bevel gear 211, wherein the diameter of the second bevel gear 221 is larger than that of the first bevel gear 211, and the purpose of reducing the rotation speed of the transmission shaft 22 is achieved by the first bevel gear 211 and the second bevel gear 221.
With continued reference to fig. 1, 2, 3, and 4, according to an embodiment of the present invention, the transmission shaft 22 is disposed on the grip housing portion 11, the driving shaft 42 is disposed on the bit housing portion 12, and the included angle between the axis of the transmission shaft 22 and the axis of the driving shaft 42 is an obtuse angle α (as shown in fig. 1 and 2), further, the included angle between the axis of the first bevel gear 31 and the axis of the second bevel gear 32 is an acute angle β (as shown in fig. 3 and 4). in this embodiment, the included angle between the axis of the transmission shaft 22 and the axis of the driving shaft 42 is an obtuse angle α. when the driving shaft 42 receives the axial force of the bit 41 during the operation of the handheld angle drill 100, the driving shaft 42 can transmit a part of the axial force to the transmission shaft 22, and the transmission shaft 22 can transmit a part of the axial force to the housing, thereby reducing the phenomenon that the driving motor 20 is damaged by the transmission of the axial force of the driving shaft 42 to the driving motor 20, and further, the included angle between the axis of the first bevel gear 31 and the second bevel gear 32 is an acute angle β (.
With continued reference to fig. 1, 2, 3 and 4, the handheld angle drill 100 further includes a mounting bracket 50 installed in the housing, one end of the mounting bracket 50 being provided with a first bearing for supporting the driving shaft 22, and the other end of the mounting bracket 50 being provided with a second bearing for supporting the driving shaft 42, according to an embodiment of the present invention. Further, a first bevel gear 31 and a second bevel gear 32 are provided in the mounting bracket 50. The mounting bracket 50 of the embodiment not only can protect the first bevel gear 31 and the second bevel gear 32, reduce the influence of the deformation of the housing on the normal operation of the first bevel gear 31 and the second bevel gear 32, but also can support the transmission shaft 22 and the driving shaft 42, effectively share the axial force of the driving shaft 42, and reduce the phenomenon that the axial force of the driving shaft 42 is directly transmitted to the driving device.
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 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 appended claims.
Claims (10)
1. The utility model provides a handheld angle drill which characterized in that, handheld angle drill includes casing, drive arrangement, bevel gear and drill bit subassembly, the casing includes handle shell portion and drill bit shell portion, drive arrangement set up in the handle shell portion, the drill bit subassembly set up in drill bit shell portion department and stretch out the drill bit shell portion, drive arrangement passes through bevel gear drives the drill bit subassembly.
2. The handheld angle drill of claim 1, wherein the driving means comprises a driving motor and a driving shaft connected to an output shaft of the driving motor, the drill head assembly comprises a driving shaft and a drill head disposed on the driving shaft, the bevel gear train comprises a first bevel gear and a second bevel gear engaged with the first bevel gear, the first bevel gear is disposed at an output end of the driving shaft, and the second bevel gear is disposed at an input end of the driving shaft.
3. The hand-held angle drill of claim 2, wherein the drive shaft is a one-piece structure with the first bevel gear.
4. The handheld angle drill of claim 2, wherein the transmission shaft is disposed in the handle housing portion, the drive shaft is disposed in the bit housing portion, and an included angle between an axis of the transmission shaft and an axis of the drive shaft is an obtuse angle.
5. The handheld angle drill of claim 2, further comprising a mounting bracket mounted within the housing, one end of the mounting bracket being provided with a first bearing for supporting the drive shaft, the other end of the mounting bracket being provided with a second bearing for supporting the drive shaft.
6. The handheld angle drill of claim 5, wherein the first bevel gear and the second bevel gear are disposed within the mounting bracket.
7. The handheld angle drill of any one of claims 2 to 6, wherein the included angle between the grip housing portion and the bit housing portion is an obtuse angle, the drive device is mounted in the grip housing portion along the length of the grip housing portion, and the drive shaft is mounted on the bit housing portion along the length of the bit housing portion.
8. The handheld angle drill of claim 7, wherein the grip housing portion and the bit housing portion are a unitary housing structure.
9. The handheld angle drill of claim 8, wherein a junction between the grip housing portion and the drill bit housing portion is provided with a grip portion at which a key is provided.
10. The hand-held corner drill according to claim 2, further comprising a first bevel gear provided at an output end of the output shaft, wherein an input end of the transmission shaft is provided with a second bevel gear engaged with the first bevel gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400526.1A CN110193618A (en) | 2019-05-15 | 2019-05-15 | Hand-held angular bit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910400526.1A CN110193618A (en) | 2019-05-15 | 2019-05-15 | Hand-held angular bit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110193618A true CN110193618A (en) | 2019-09-03 |
Family
ID=67752812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910400526.1A Pending CN110193618A (en) | 2019-05-15 | 2019-05-15 | Hand-held angular bit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110193618A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113245621A (en) * | 2020-02-11 | 2021-08-13 | 南京德朔实业有限公司 | Reciprocating saw |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2268436A1 (en) * | 2008-04-18 | 2011-01-05 | Atlas Copco Tools AB | Portable power drill with drilling implement rotating and feeding means. |
| JP2011245573A (en) * | 2010-05-25 | 2011-12-08 | Jiroo Kk | Cutter drive device of boring machine |
| CN107538045A (en) * | 2016-06-23 | 2018-01-05 | 张泓泽 | A kind of hand-held perforating device of adjustable rotating speed |
| CN108453289A (en) * | 2018-02-08 | 2018-08-28 | 浙江意达电器有限公司 | Facilitate the lithium electricity electric two-speed drill and its torsion adjusting method for adjusting outputting torsion |
-
2019
- 2019-05-15 CN CN201910400526.1A patent/CN110193618A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2268436A1 (en) * | 2008-04-18 | 2011-01-05 | Atlas Copco Tools AB | Portable power drill with drilling implement rotating and feeding means. |
| JP2011245573A (en) * | 2010-05-25 | 2011-12-08 | Jiroo Kk | Cutter drive device of boring machine |
| CN107538045A (en) * | 2016-06-23 | 2018-01-05 | 张泓泽 | A kind of hand-held perforating device of adjustable rotating speed |
| CN108453289A (en) * | 2018-02-08 | 2018-08-28 | 浙江意达电器有限公司 | Facilitate the lithium electricity electric two-speed drill and its torsion adjusting method for adjusting outputting torsion |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113245621A (en) * | 2020-02-11 | 2021-08-13 | 南京德朔实业有限公司 | Reciprocating saw |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7753135B2 (en) | Power tool with a rotating and/or hammering drive mechanism | |
| JP3872897B2 (en) | Electric tool | |
| US8857536B2 (en) | Hand-held power tool | |
| US8281873B2 (en) | Hand-held power tool | |
| EP1433644A3 (en) | Driving apparatus | |
| CN110193618A (en) | Hand-held angular bit | |
| US8955617B2 (en) | Hand-held power tool comprising a spindle for receiving a tool | |
| US8888602B2 (en) | Electric tools | |
| US7568531B2 (en) | Gear transmission device for power tool | |
| CN210280764U (en) | Hand-held angle drill | |
| US11285586B2 (en) | Electric power tool | |
| US6026909A (en) | Power tool | |
| CN210053304U (en) | Gear speed reducing motor | |
| CN201763895U (en) | Worm and worm wheel transmission device capable of adjusting transmission clearance | |
| CN201330797Y (en) | Shaft sleeve, stirring transmission device and concrete mixer | |
| CN210208731U (en) | Pipeline opening device | |
| JPH10193278A (en) | Motor-driven screwdriver | |
| CN110227835B (en) | Pipeline opening device and using method thereof | |
| CN2900050Y (en) | Safety reliable impact electric drill | |
| CN213585444U (en) | Mounting structure of electric push rod driving motor | |
| CN219436791U (en) | Speed reducing motor | |
| JP4659592B2 (en) | Rotational linear motion converter | |
| CN211073473U (en) | Impact drill | |
| KR100407429B1 (en) | An impact absorbing apparatus of a starter | |
| CN209781577U (en) | Short-range efficient speed reducer with high reliability |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190903 |
|
| RJ01 | Rejection of invention patent application after publication |