CN204357952U - Angle grinding machine bearing gland formula labyrinth dustproof construction - Google Patents
Angle grinding machine bearing gland formula labyrinth dustproof construction Download PDFInfo
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- CN204357952U CN204357952U CN201420805876.9U CN201420805876U CN204357952U CN 204357952 U CN204357952 U CN 204357952U CN 201420805876 U CN201420805876 U CN 201420805876U CN 204357952 U CN204357952 U CN 204357952U
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- raised line
- seal
- bearing
- dustproof construction
- rotor shaft
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to grinding machine bearing gland formula labyrinth, angle dustproof construction.Grinding machine bearing gland formula labyrinth, the angle dustproof construction that the utility model provides, rotor shaft is also provided with between blade and bearing the end cap for rigid bearing, described end cap is fixed on housing by attachment screw, described end cap is provided with for dust-proof ring rib, and described blade is provided with the annular groove suitable with ring rib; Raised line and groove form mazy type dustproof construction, thus can effectively avoid dust to enter Bearing inner; This structure does not affect the fixed performance of end cap to bearing while having good sealing effect, improve bearing stability in use, in addition, it is simple that this dustproof construction has structure, easily manufactured feature, reduces the manufacture cost of electric tool.
Description
Technical field
The utility model relates to grinding machine bearing gland formula labyrinth, angle dustproof construction.
Background technique
In prior art, electric tool such as on-the-spot meeting when the products such as angle grinding machine use produces more dust, particularly at cutting cement block, stone material etc.; Work in such a situa-tion, just require that electric tool product has good dust prevention.Bearing needs most one of component of carrying out proofing dust and protecting inside electric tool, bearing dust-proof protective structure is generally mostly on the market is at present after bearing back-up ring is had good positioning, do separately a dust proof member again, be fixed on around bearing, the reliability of this airframe bearing location can differ from, or there are some to be the casings making separately a positioning bearing, be connected between gear-box and casing, newly-increased casing can increase assembly error, need to ensure certain machining accuracy, otherwise also can produce some impacts to bearing location; Aforementioned two kinds of structures compare some machines not with dust-proof requirement, can increase certain cost, particularly latter solution; In addition, also just general on dust-proof effect, also do not reach desirable effect.Therefore, reliability and the dust-proof effect of current existing technological scheme bearing location are all undesirable, and improve the cost of production of electric tool.
Summary of the invention
Grinding machine bearing gland formula labyrinth, the angle dustproof construction that the utility model provides, is intended to overcome the sealing configuration of electric tool in prior art and arranges unreasonable, affect the fixed performance of bearing and the deficiency of sealing effect difference.
In order to solve the problems of the technologies described above, the utility model adopts following technological scheme: grinding machine bearing gland formula labyrinth, angle dustproof construction, comprise housing and be arranged in housing for providing the rotor shaft of power, the blade that described rotor shaft is provided with, the bearing for support rotor axle is also provided with between described rotor shaft and housing, described rotor shaft is also provided with between blade and bearing the end cap for rigid bearing, described end cap is fixed on housing by attachment screw, described end cap is provided with for dust-proof ring rib, described blade is provided with the annular groove suitable with ring rib.
As preferably, described raised line has one at least, the quantity of described groove is equal with the quantity of raised line, the end face of described raised line is 0.5 millimeter to 3 millimeters to the bottom surface distance of groove, by arranging at least two raised lines and making the distance of raised line end face be 0.5 millimeter to 3 millimeters to the distance of groove floor, in using process, raised line and groove can form good rotary seal, because raised line end face is less to the distance of groove floor, therefore dust is difficult to enter Bearing inner, good dustproof effect.
As preferably, close to the height of the raised line of rotor shaft higher than the height of the raised line away from rotor shaft, described raised line front end is equipped with for improving sealing effect and can producing the seal of resiliently deformable, the shape of cross section of described seal is for being greater than 1/2 circular arc, the diameter of described seal is greater than the thickness of raised line, described blade is provided with the receiving groove for holding seal, the shape of cross section of described receiving groove and the shape of cross section of seal suitable, the diameter of described receiving groove cross section is greater than the diameter 1.6 millimeters to 5 millimeters of seal cross section, by arranging seal, raised line, seal fit, receiving groove defines better labyrinth sealing effect, dust is not easy to enter bearing more, further increase the dust-proof effect of dustproof construction.
As preferably, described seal is arranged on raised line by bonding way, the set screw for further fixing seal body is also provided with between described seal and raised line, described seal is provided with the through hole for wearing set screw, described raised line is provided with the internal thread suitable with set screw, described set screw comprises ailhead, described seal is provided with the receiving cavity for holding ailhead, described receiving cavity communicates with through hole, seal is arranged on after on raised line by bonding way and adopts set screw further to reinforce again, seal is connected with raised line reliably, after avoiding Long-Time Service, seal and raised line take off, cause seal failure, cause the damage of tool into rotation parts, extend the working life of dustproof construction.
Grinding machine bearing gland formula labyrinth, the angle dustproof construction that the utility model provides, tool has the following advantages: rotor shaft is also provided with between blade and bearing the end cap for rigid bearing, described end cap is fixed on housing by attachment screw, described end cap is provided with for dust-proof ring rib, and described blade is provided with the annular groove suitable with ring rib; Raised line and groove form mazy type dustproof construction, thus can effectively avoid dust to enter Bearing inner; This structure does not affect the fixed performance of end cap to bearing while having good sealing effect, improve bearing stability in use, in addition, it is simple that this dustproof construction has structure, easily manufactured feature, reduces the manufacture cost of electric tool.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of grinding machine bearing gland formula labyrinth, the utility model angle dustproof construction,
Accompanying drawing 2 is A place enlarged views in accompanying drawing 1,
Accompanying drawing 3 is structural representations when raised line is provided with seal in the dustproof construction of grinding machine bearing gland formula labyrinth, the utility model angle.
Embodiment
Below in conjunction with accompanying drawing, grinding machine bearing gland formula labyrinth, angle of the present utility model dustproof construction is described further.As Fig. 1, Fig. 2, shown in Fig. 3, angle grinding machine bearing gland formula labyrinth dustproof construction, comprise housing 1 and be arranged in housing 1 for providing the rotor shaft 2 of power, the described rotor shaft 2 i.e. rotor shaft 2 of motor, electric tool in use provides power by motor, the blade 3 that described rotor shaft 2 is provided with, namely described blade 3 is fixedly connected on rotor shaft 2 for the formation of the fan that wind energy is dispelled the heat to motor, the method that described blade 3 can be connected by key or interference connects is arranged on rotor shaft 2, the bearing 4 for support rotor axle 2 is also provided with between described rotor shaft 2 and housing 1, described rotor shaft 2 is also provided with between blade 3 and bearing 4 end cap 5 for rigid bearing 4, described end cap 5 is fixed on housing 1 by attachment screw 6, described end cap 5 is provided with for dust-proof ring rib 7, described blade 3 is provided with the annular groove 8 suitable with ring rib 7, concrete using process rotor axle 2 rotating band moving vane 3 rotates, and end cap 5 is fixed on housing 1, in using process, end cap 5 is static, therefore, under the effect of raised line 7 and groove 8, rotary seal is formed in using process, thus can effectively prevent dust from entering in bearing 4.
Optionally, described raised line 7 has one at least, the quantity of described groove 8 is equal with the quantity of raised line 7, the end face of described raised line 7 is 0.5 millimeter to 3 millimeters to the bottom surface distance of groove 8, the set-up mode of all raised lines 7 should form concentric circle, blade 3 due to concrete using process further groove 8 place needs to rotate, in order to avoid raised line 7 and groove 8 interfere, so all raised lines 7 need be set to concentrically ringed structure; The end face of described raised line 7 to groove 8 bottom surface between distance can unrestricted choice, specifically, the end face of raised line 7 is less to the distance of the bottom surface of groove 8, and dust-proof effect is better.
As shown in Figure 3, optionally, close to the height of the raised line 7 of rotor shaft 2 higher than the height of the raised line 7 away from rotor shaft 2, namely all raised lines 7 be positioned on end cap 5 are higher the closer to the height of rotor shaft 2 raised line 7, namely the height of all raised lines 7 outside in increases successively, described raised line 7 front end is equipped with for improving sealing effect and can producing the seal 9 of resiliently deformable, the shape of cross section of described seal 9 is for being greater than 1/2 circular arc, the diameter of described seal 9 is greater than the thickness of raised line 7, described blade 3 is provided with the receiving groove 10 for holding seal 9, the shape of cross section of described receiving groove 10 and the shape of cross section of seal 9 suitable, the diameter of described receiving groove 10 cross section is greater than the diameter 1.6 millimeters to 5 millimeters of seal 9 cross section.
As shown in Figure 3, optionally, described seal 9 is arranged on raised line 7 by bonding way, the set screw 11 for further fixing seal body 9 is also provided with between described seal 9 and raised line 7, described seal 9 is provided with the through hole 12 for wearing set screw 11, described raised line 7 is provided with the internal thread 13 suitable with set screw 11, described set screw 11 comprises ailhead 14, described seal 9 is provided with the receiving cavity 15 for holding ailhead 14, described receiving cavity 15 communicates with through hole 12, in order to further increase the join strength of seal 9 and raised line 7, can enter be coated with one deck glue on set screw 11 being mounted with screw 11, to improve the join strength of set screw 11 and raised line 7.
Technique scheme in use, driven by motor rotor shaft 2 rotates, thus the blade 3 be arranged on rotor shaft 2 is rotated, because blade 3 is provided with groove 8, and on the end cap 5 of rigid bearing 4, raised line 7 is set, raised line 7 coordinates with groove 8 and forms rotary seal, thus prevents dust from entering in bearing 4; Rotor shaft 2 is also provided with between blade 3 and bearing 4 end cap 5 for rigid bearing 4, described end cap 5 is fixed on housing 1 by attachment screw 6, described end cap 5 is provided with for dust-proof ring rib 7, and described blade 3 is provided with the annular groove 8 suitable with ring rib 7; Raised line 7 and groove 8 form mazy type dustproof construction, thus it is inner effectively to avoid dust to enter bearing 4; This structure does not affect the fixed performance of end cap 5 pairs of bearings 4 while having good sealing effect, improve bearing 4 stability in use, in addition, it is simple that this dustproof construction has structure, easily manufactured feature, reduces the manufacture cost of electric tool.
These are only the preferred embodiment of the present invention, being intended to embody outstanding technique effect of the present invention and advantage, is not the restriction to technological scheme of the present invention.Those skilled in the art will appreciate that all amendments made based on the technology of the present invention content, change or substitute technology feature, all should be covered by the technology category of claims of the present invention opinion.
Claims (4)
1. angle grinding machine bearing gland formula labyrinth dustproof construction, it is characterized in that: comprise housing (1) and be arranged in housing (1) for providing the rotor shaft (2) of power, the blade (3) that described rotor shaft (2) is provided with, the bearing (4) for support rotor axle (2) is also provided with between described rotor shaft (2) and housing (1), described rotor shaft (2) is also provided with between blade (3) and bearing (4) end cap (5) for rigid bearing (4), described end cap (5) is fixed on housing (1) by attachment screw (6), described end cap (5) is provided with for dust-proof ring rib (7), described blade (3) is provided with the annular groove (8) suitable with ring rib (7).
2. grinding machine bearing gland formula labyrinth, angle according to claim 1 dustproof construction, it is characterized in that: described raised line (7) has one at least, the quantity of described groove (8) is equal with the quantity of raised line (7), and the end face of described raised line (7) is 0.5 millimeter to 3 millimeters to the bottom surface distance of groove (8).
3. grinding machine bearing gland formula labyrinth, angle according to claim 2 dustproof construction, it is characterized in that: close to the height of the raised line (7) of rotor shaft (2) higher than the height of the raised line (7) away from rotor shaft (2), described raised line (7) front end is equipped with for improving sealing effect and can producing the seal (9) of resiliently deformable, the shape of cross section of described seal (9) is for being greater than 1/2 circular arc, the diameter of described seal (9) is greater than the thickness of raised line (7), described blade (3) is provided with the receiving groove (10) for holding seal (9), the shape of cross section of described receiving groove (10) and the shape of cross section of seal (9) suitable, the diameter of described receiving groove (10) cross section is greater than the diameter 1.6 millimeters to 5 millimeters of seal (9) cross section.
4. grinding machine bearing gland formula labyrinth, angle according to claim 3 dustproof construction, it is characterized in that: described seal (9) is arranged on raised line (7) by bonding way, the set screw (11) for further fixing seal body (9) is also provided with between described seal (9) and raised line (7), described seal (9) is provided with the through hole (12) for wearing set screw (11), described raised line (7) is provided with the internal thread (13) suitable with set screw (11), described set screw (11) comprises ailhead (14), described seal (9) is provided with the receiving cavity (15) for holding ailhead (14), described receiving cavity (15) communicates with through hole (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805876.9U CN204357952U (en) | 2014-12-18 | 2014-12-18 | Angle grinding machine bearing gland formula labyrinth dustproof construction |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420805876.9U CN204357952U (en) | 2014-12-18 | 2014-12-18 | Angle grinding machine bearing gland formula labyrinth dustproof construction |
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| CN204357952U true CN204357952U (en) | 2015-05-27 |
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| CN201420805876.9U Active CN204357952U (en) | 2014-12-18 | 2014-12-18 | Angle grinding machine bearing gland formula labyrinth dustproof construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165945A (en) * | 2017-07-24 | 2017-09-15 | 江苏新瑞齿轮***有限公司 | A kind of gear-box and bearing sealing device |
| CN107888010A (en) * | 2017-11-17 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor sealing structure and motor |
| CN111786496A (en) * | 2020-06-15 | 2020-10-16 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
-
2014
- 2014-12-18 CN CN201420805876.9U patent/CN204357952U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107165945A (en) * | 2017-07-24 | 2017-09-15 | 江苏新瑞齿轮***有限公司 | A kind of gear-box and bearing sealing device |
| CN107888010A (en) * | 2017-11-17 | 2018-04-06 | 珠海格力节能环保制冷技术研究中心有限公司 | A kind of motor sealing structure and motor |
| WO2019095981A1 (en) * | 2017-11-17 | 2019-05-23 | 珠海格力节能环保制冷技术研究中心有限公司 | Motor sealing structure and motor |
| CN107888010B (en) * | 2017-11-17 | 2019-11-26 | 珠海格力电器股份有限公司 | A kind of motor sealing structure and motor |
| US11289968B2 (en) | 2017-11-17 | 2022-03-29 | Gree Green Refrigeration Technology Center Co., Ltd. Of Zhuhai | Motor sealing structure and motor |
| CN111786496A (en) * | 2020-06-15 | 2020-10-16 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
| CN111786496B (en) * | 2020-06-15 | 2022-05-06 | 杭州微光电子股份有限公司 | Rotary sealing structure and end cover rotating shaft assembling structure |
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