TWI512217B - Ball screw with magnetic dustproof device - Google Patents
Ball screw with magnetic dustproof device Download PDFInfo
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- TWI512217B TWI512217B TW102127238A TW102127238A TWI512217B TW I512217 B TWI512217 B TW I512217B TW 102127238 A TW102127238 A TW 102127238A TW 102127238 A TW102127238 A TW 102127238A TW I512217 B TWI512217 B TW I512217B
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Description
本發明係為一種線性傳動元件，尤指一種具磁性防塵裝置之滾珠螺桿。 The invention is a linear transmission component, in particular a ball screw with a magnetic dustproof device.
滾珠螺桿由於具有低摩擦阻力之特性，因此為一種廣泛應用於機械領域的傳動元件。其主要包含一螺桿、一螺帽及多數之滾動體；其中螺桿表面具有滾動溝，螺帽則包含一本體及供滾動體循環迴流之配件，而螺帽本體呈中空狀，且其內側具有與螺桿之滾動溝相配合之滾動槽，並和螺桿相互套合。多數之滾動體則介於螺桿與螺帽之滾動溝與滾動槽間，藉由滾動體之滾動使螺桿與螺帽相對轉動而移動。 Due to its low frictional resistance, the ball screw is a transmission component widely used in the mechanical field. The utility model mainly comprises a screw, a nut and a plurality of rolling bodies; wherein the screw surface has a rolling groove, the nut comprises a body and a fitting for circulating the rolling body, and the nut body is hollow, and the inner side has a screw The rolling groove cooperates with the rolling groove and fits with the screw. Most of the rolling elements are interposed between the rolling groove and the rolling groove of the screw and the nut, and the screw and the nut are relatively rotated by the rolling of the rolling elements.
請參閱第八圖所示，為了使滾珠螺桿之運行順暢度提升，首要就是要避免異物粉塵入侵該螺帽內部，因此通常都會在螺帽(1)兩端各安裝一防塵裝置(3)，其中習用的防塵裝置(3)固定於螺帽(1)上，防塵裝置(3)外觀係為一環狀型態的結構，而其內徑則具有與螺桿(2)之滾動溝(21)配合之唇部(31)，因此正常狀態下防塵裝置(3)都是利用其唇部(31)兩側壁面與螺桿(2)的滾動溝(21)接觸，以避免異物粉塵入侵該螺帽(1)內部。然而，滾動體(7)與該滾動溝(21)及滾動槽(11)之間相對滾動時，會有磨耗產生，故會 形成許多磨削，而該些磨削久而久之會堆積於螺帽(1)的兩端，當磨削越來越多時，就會影響滾動體(7)的運行，而讓滾珠螺桿運行時產生噪音或卡死無法運行的問題發生，故針對此問題仍有改良精進之必要。 As shown in the eighth figure, in order to improve the smooth running of the ball screw, the first thing is to prevent the foreign matter dust from invading the inside of the nut. Therefore, a dustproof device (3) is usually installed at both ends of the nut (1). The conventional dustproof device (3) is fixed on the nut (1), the dustproof device (3) has an annular structure, and the inner diameter has a rolling groove (21) with the screw (2). Fit the lip (31), so the dust-proof device (3) under normal conditions is in contact with the rolling groove (21) of the screw (2) by the side wall surfaces of the lip portion (31) to prevent foreign matter dust from invading the nut (1) Internal. However, when the rolling element (7) and the rolling groove (21) and the rolling groove (11) are relatively rolled, wear may occur, so A lot of grinding is formed, and the grinding will accumulate over the two ends of the nut (1) for a long time. When the grinding is more and more, the operation of the rolling body (7) is affected, and the ball screw is generated when the ball is running. The problem of noise or stuck inoperability has occurred, so there is still a need for improvement and improvement.
有鑑於上述問題，本發明係研發一種能將滾動體與該滾動溝及滾動槽之間相對滾動時，所產生的磨削集中於一儲存空間，以避免該磨削影響滾動體之運行。 In view of the above problems, the present invention develops a type of grinding that can be used to roll the rolling bodies and the rolling grooves and the rolling grooves, and the resulting grinding is concentrated in a storage space to prevent the grinding from affecting the operation of the rolling elements.
為達成上述之目的，本發明係為一種具磁性防塵裝置之滾珠螺桿，係包含：一螺桿，其朝一方向延伸為長條狀結構，定義該延伸方向係為軸方向，該螺桿之外徑面設有螺旋狀之滾動溝；一螺帽，係設有一供該螺桿穿設之穿孔，該穿孔之內緣面係設有相對該滾動溝之滾動槽，該滾動溝與滾動槽係構成一負荷路徑，該穿孔之兩端部係分別設有一安裝槽及一擴槽，而該擴槽係朝該安裝槽之底面凹陷設置；複數滾動體，其設置於該負荷路徑；兩防塵裝置，其係分別設置於該安裝槽，該防塵裝置朝該穿孔端面係設有容置部、磁性件及儲存空間，該磁性件係設於該容置部，該儲存空間係與該磁性件銜接或間隔設置，該儲存空間係相對該擴槽設置。 In order to achieve the above object, the present invention is a ball screw with a magnetic dustproof device, comprising: a screw extending in a direction into a strip-like structure, the extension direction being defined as an axial direction, and the outer diameter surface of the screw a spiral rolling groove is provided; a nut is provided with a through hole for the screw, and the inner edge surface of the hole is provided with a rolling groove opposite to the rolling groove, and the rolling groove and the rolling groove form a load a path, the two ends of the perforation are respectively provided with a mounting groove and a expansion groove, and the expansion groove is recessed toward the bottom surface of the installation groove; a plurality of rolling elements are disposed on the load path; and two dustproof devices are Separately disposed in the mounting slot, the dustproof device is provided with a receiving portion, a magnetic member and a storage space, and the magnetic member is disposed in the receiving portion, and the storage space is connected or spaced from the magnetic member. The storage space is disposed relative to the expansion slot.
較佳的，該防塵裝置係由一本體及一磁性件構成，該本體係設有一供該螺桿穿設之通孔，該通孔之內緣面係設有朝該滾動溝凸伸設置的唇部，且該本體相對該穿孔之端面係凹設有該容置部，且該容置部係凹設有複數個該儲存空間，該磁性件係設有複數個相對該儲存空間之貫穿孔，當該磁性件裝設於該容置部時，該 貫穿孔係相對該儲存空間設置，該貫穿孔與該儲存空間為銜接設置。 Preferably, the dustproof device is composed of a body and a magnetic member. The system is provided with a through hole through which the screw is inserted, and the inner edge surface of the through hole is provided with a lip protruding toward the rolling groove. And the receiving portion is recessed with respect to the end surface of the through hole, and the receiving portion is recessed with a plurality of the storage spaces, and the magnetic member is provided with a plurality of through holes opposite to the storage space. When the magnetic member is mounted on the receiving portion, the The through hole is disposed opposite to the storage space, and the through hole is disposed in connection with the storage space.
較佳的，該本體設置一與該容置部連通的凹槽，該磁性件設有相對該凹槽之定位部，當該定位部設於該凹槽時，該貫穿孔即與該儲存空間對位。 Preferably, the body is provided with a groove communicating with the accommodating portion, and the magnetic member is provided with a positioning portion opposite to the groove. When the positioning portion is disposed in the groove, the through hole is the storage space Counterpoint.
較佳的，該防塵裝置係由一本體及一磁性件構成，該磁性件係為複數個獨立構件；而該本體相對該穿孔之端面係凹設有複數該容置部，該容置部係提供該磁性件設置其中，而該磁性件之厚度係小於該容置部之深度，當該磁性件裝設於該容置部時，多餘的空間即構成該儲存空間，該磁性件與該儲存空間銜接設置。 Preferably, the dustproof device is composed of a body and a magnetic member, wherein the magnetic member is a plurality of independent members; and the body is recessed with respect to the end surface of the through hole to provide a plurality of the receiving portions, the receiving portion is The magnetic member is disposed therein, and the thickness of the magnetic member is smaller than the depth of the accommodating portion. When the magnetic member is mounted on the accommodating portion, the excess space constitutes the storage space, and the magnetic member and the storage portion Space connection settings.
較佳的，該防塵裝置係由一本體及一磁性件構成，該磁性件係為複數個獨立構件；而該本體相對該穿孔之端面係凹設有複數該容置部，該容置部係提供該磁性件設置其中，而該磁性件之厚度係小於該容置部之深度，當該磁性件裝設於該容置部時，多餘的空間即構成該儲存空間，且該磁性件與儲存空間之間具有一薄膜，使該磁性件與儲存空間為間隔設置。 Preferably, the dustproof device is composed of a body and a magnetic member, wherein the magnetic member is a plurality of independent members; and the body is recessed with respect to the end surface of the through hole to provide a plurality of the receiving portions, the receiving portion is Providing the magnetic member is disposed therein, and the thickness of the magnetic member is smaller than the depth of the accommodating portion. When the magnetic member is mounted on the accommodating portion, the excess space constitutes the storage space, and the magnetic member and the storage device There is a film between the spaces to space the magnetic member from the storage space.
習知技術 Conventional technology
1‧‧‧螺帽 1‧‧‧ nuts
11‧‧‧滾動槽 11‧‧‧ rolling groove
2‧‧‧螺桿 2‧‧‧ screw
21‧‧‧滾動溝 21‧‧‧ rolling groove
3‧‧‧防塵裝置 3‧‧‧Dust-proof device
31‧‧‧唇部 31‧‧‧Lip
7‧‧‧滾動體 7‧‧‧ rolling elements
本發明 this invention
1‧‧‧螺桿 1‧‧‧ screw
11‧‧‧滾動溝 11‧‧‧ rolling groove
2‧‧‧螺帽 2‧‧‧ nuts
21‧‧‧穿孔 21‧‧‧Perforation
211‧‧‧滾動槽 211‧‧‧ rolling groove
22‧‧‧螺絲孔 22‧‧‧ screw holes
23‧‧‧安裝槽 23‧‧‧Installation slot
231‧‧‧底面 231‧‧‧ bottom
24‧‧‧擴槽 24‧‧‧Expanding
3‧‧‧本體 3‧‧‧ Ontology
31‧‧‧通孔 31‧‧‧through hole
311‧‧‧唇部 311‧‧‧Lip
32、32A‧‧‧容置部 32, 32A‧‧‧ 容 部
321、321A‧‧‧儲存空間 321,321A‧‧‧ storage space
33‧‧‧凹槽 33‧‧‧ Groove
4、4A‧‧‧磁性件 4, 4A‧‧‧ magnetic parts
41‧‧‧貫穿孔 41‧‧‧through holes
42‧‧‧定位部 42‧‧‧ Positioning Department
G‧‧‧固定件 G‧‧‧Fixed parts
E‧‧‧磨削 E‧‧‧ grinding
U‧‧‧深度 U‧‧‧depth
T‧‧‧厚度 T‧‧‧ thickness
X‧‧‧軸方向 X‧‧‧axis direction
5‧‧‧滾動體 5‧‧‧ rolling elements
第一圖係為本發明第一較佳實施例具磁性防塵裝置之滾珠螺桿之立體系統圖。 The first figure is a perspective system diagram of a ball screw with a magnetic dustproof device according to a first preferred embodiment of the present invention.
第二圖係為本發明第一較佳實施例具磁性防塵裝置之滾珠螺桿之立體組合圖。 The second figure is a three-dimensional combination diagram of a ball screw with a magnetic dustproof device according to a first preferred embodiment of the present invention.
第三圖係為第二圖的軸方向之剖視圖。 The third figure is a cross-sectional view of the second figure in the axial direction.
第四圖係為本發明第一較佳實施例磁性防塵裝置之立體系統圖。 The fourth figure is a perspective system diagram of a magnetic dustproof device according to a first preferred embodiment of the present invention.
第五圖係為本發明第二較佳實施例具磁性防塵裝置之滾珠螺桿之立體系統圖。 Figure 5 is a perspective view of a ball screw having a magnetic dustproof device according to a second preferred embodiment of the present invention.
第六圖係為本發明第二較佳實施例具磁性防塵裝置之滾珠螺桿之立體組合圖。 Figure 6 is a perspective assembled view of a ball screw with a magnetic dustproof device according to a second preferred embodiment of the present invention.
第七圖係為第六圖的軸方向之剖視圖。 The seventh drawing is a cross-sectional view in the axial direction of the sixth drawing.
第八圖係為習知技術具防塵裝置之滾珠螺桿的剖視圖。 The eighth drawing is a cross-sectional view of a ball screw of the prior art with a dustproof device.
請參閱第一圖至第三圖所示，係為本發明第一較佳實施例，本發明係為一種具磁性防塵裝置之滾珠螺桿，係包含：一螺桿(1)，其朝一方向延伸為長條狀結構，定義該延伸方向係為軸方向(X)，該螺桿(1)之外徑面設有螺旋狀之滾動溝(11)；一螺帽(2)，係設有一供該螺桿(1)穿設之穿孔(21)，該穿孔(21)之內緣面係設有相對該滾動溝(11)之滾動槽(211)，該滾動溝(11)與滾動槽(211)係構成一負荷路徑，該穿孔(21)之兩端部係分別設有一安裝槽(23)及一擴槽(24)，該安裝槽(23)之內徑的尺寸係大於該穿孔(21)之內徑的尺寸，而該擴槽(24)係朝著該安裝槽(23)之底面(231)凹陷設置；複數滾動體(5)，其設置於該負荷路徑；兩防塵裝置，其係分別設置於該安裝槽(23)，該防塵裝置係由一本體(3)及一磁性件(4)構成，於本實施例該本體(3)係設有一供該螺桿(1)穿設之通孔(31)，該通孔(31)之內緣面係設有朝該滾動溝(11)凸伸設置的唇部(311)，且該本體(3)相對該穿孔(21)之端面係凹設有一容置部(32)，且該容置部(32)係凹設有複 數個儲存空間(321)，於本實施例該磁性件(4)係為一圓環狀且設於該容置部(32)，而該磁性件(4)係設有複數個相對該儲存空間(321)之貫穿孔(41)，當該磁性件(4)裝設於該容置部(32)時，該貫穿孔(41)係相對該儲存空間(321)設置，故該貫穿孔(41)與該儲存空間(321)是銜接設置的；而該防塵裝置設置於該安裝槽(23)後，係藉由一固定件(G)螺設於該螺帽(2)所設之螺絲孔(22)後，該固定件(G)係抵設於該本體(3)之外徑面，藉由該固定件(G)以固定該防塵裝置的任意自由度，同時該貫穿孔(41)及該儲存空間(321)係相對該擴槽(24)設置，而該擴槽(24)係與該穿孔(21)相連通。 Referring to the first to third embodiments, the first preferred embodiment of the present invention is a ball screw with a magnetic dustproof device, comprising: a screw (1) extending in one direction a long strip-shaped structure, the extension direction is defined as an axial direction (X), the outer diameter surface of the screw (1) is provided with a spiral rolling groove (11); a nut (2) is provided with a screw (1) a perforated hole (21), the inner edge surface of the perforation (21) is provided with a rolling groove (211) opposite to the rolling groove (11), and the rolling groove (11) and the rolling groove (211) are Forming a load path, the two ends of the through hole (21) are respectively provided with a mounting groove (23) and a expansion groove (24), the inner diameter of the mounting groove (23) is larger than the perforation (21) The size of the inner diameter, and the expansion groove (24) is recessed toward the bottom surface (231) of the mounting groove (23); the plurality of rolling elements (5) are disposed on the load path; the two dustproof devices are respectively The dustproof device is formed by a body (3) and a magnetic member (4). In the embodiment, the body (3) is provided with a thread for the screw (1) to pass through. Hole (31), the inner edge of the through hole (31) a lip portion (311) protruding toward the rolling groove (11), and the body (3) is recessed with an receiving portion (32) opposite to the end surface of the through hole (21), and the receiving portion ( 32) recessed with complex a plurality of storage spaces (321). In the embodiment, the magnetic member (4) is annular and disposed on the receiving portion (32), and the magnetic member (4) is provided with a plurality of storage spaces. (321) the through hole (41), when the magnetic member (4) is mounted on the receiving portion (32), the through hole (41) is disposed relative to the storage space (321), so the through hole ( 41) is disposed in connection with the storage space (321); and the dustproof device is disposed on the mounting groove (23), and is screwed to the screw provided by the nut (2) by a fixing member (G) After the hole (22), the fixing member (G) is abutted against the outer diameter surface of the body (3), and the fixing member (G) is used to fix any degree of freedom of the dustproof device, and the through hole (41) And the storage space (321) is disposed relative to the expansion slot (24), and the expansion slot (24) is in communication with the through hole (21).
請參閱第三圖所示，當滾珠螺桿運行一段時間後，滾動體(5)與滾動溝(11)及滾動槽(211)之間磨擦所產生的磨削(E)會因為螺帽(2)的運行而被堆積於該本體(3)之位置，也就是鄰近該磁性件(4)之位置，而藉由該磁性件(4)的吸引使得該磨削(E)會朝著該貫穿孔(41)移動，而當磨削(E)越來越多時，因為磨削(E)之間的推擠而讓磨削(E)進入該儲存空間(321)，以避免該磨削(E)引響該滾動體(5)的運行。 Referring to the third figure, when the ball screw is running for a period of time, the grinding (E) caused by the friction between the rolling element (5) and the rolling groove (11) and the rolling groove (211) will be due to the nut (2). The operation is stacked on the body (3), that is, adjacent to the magnetic member (4), and the attraction of the magnetic member (4) causes the grinding (E) to penetrate therethrough. The hole (41) moves, and when the grinding (E) is more and more, the grinding (E) enters the storage space (321) due to the pushing between the grinding (E) to avoid the grinding. (E) ignites the operation of the rolling element (5).
請參閱第四圖所示，為了讓該貫穿孔(41)與該儲存空間(321)能輕易對位，故可於該本體(3)設置一與該容置部(32)連通的凹槽(33)，該磁性件(4)設有相對該凹槽(33)之定位部(42)，該定位部(42)於本實施例係為一板狀體，其厚度約等於該凹槽(33)之深度，當該定位部( 42)設於該凹槽(33)時，該貫穿孔(41)即可與該儲存空間(321)達到對位之效果。 Referring to the fourth figure, in order to allow the through hole (41) and the storage space (321) to be easily aligned, a groove communicating with the receiving portion (32) may be disposed on the body (3). (33), the magnetic member (4) is provided with a positioning portion (42) opposite to the groove (33). The positioning portion (42) is a plate-like body in the embodiment, and has a thickness equal to the groove. (33) the depth when the positioning part ( 42) When the groove (33) is provided, the through hole (41) can achieve the alignment effect with the storage space (321).
請參閱第五圖至第六圖所示，係為本發明第二較佳實施例，本實施例與第一較佳實施例不同在於：該磁性件(4A)係為複數個獨立構件，其外型可為圓形、矩形或不規則之外型，本實施例為圓形；而該本體(3)相對該穿孔(21)之端面係凹設有複數個容置部(32A)，該容置部(32A)係提供該磁性件(4A)設置其中，而該磁性件(4A)之厚度(T)係小於該容置部(32A)之深度(U)，當該磁性件(4A)裝設於該容置部(32A)時，多餘的空間即構成一儲存空間(321A)提供磨削集中，故該磁性件(4A)與該儲存空間(321A)銜接設置。另，本實施例之磁性件(4A)亦可於本體製造過程中一體塑料射出成形於該本體(3)中，此時，該磁性件(4A)可能包覆於一層薄的塑膠膜中，以避免該磁性件(4A)掉出該本體(3)，而在此種構型下該磁性件(4A)與儲存空間(321A)之間由該薄膜間隔設置，但因為薄膜不會引響該磁性件(4A)的磁力，故仍有吸附該磨削之效果。其餘元件之結構及組態和之間所能產生之功效係與第一較佳實施例相同，再此不再多作贅述。 Referring to the fifth to sixth embodiments, the second preferred embodiment of the present invention is different from the first preferred embodiment in that the magnetic member (4A) is a plurality of independent members. The outer shape may be a circular shape, a rectangular shape or an irregular shape, and the embodiment is circular; and the body (3) is recessed with a plurality of receiving portions (32A) opposite to the end surface of the through hole (21). The accommodating portion (32A) provides the magnetic member (4A) disposed therein, and the thickness (T) of the magnetic member (4A) is smaller than the depth (U) of the accommodating portion (32A) when the magnetic member (4A) When installed in the accommodating portion (32A), the excess space constitutes a storage space (321A) to provide grinding concentration, so that the magnetic member (4A) is engaged with the storage space (321A). In addition, the magnetic member (4A) of the embodiment can also be injection molded into the body (3) during the manufacturing process of the body. At this time, the magnetic member (4A) may be coated in a thin plastic film. To prevent the magnetic member (4A) from falling out of the body (3), and in this configuration, the magnetic member (4A) and the storage space (321A) are spaced apart by the film, but since the film does not sing The magnetic force of the magnetic member (4A) still has the effect of adsorbing the grinding. The structure and configuration of the remaining components and the functions that can be produced between them are the same as those of the first preferred embodiment, and will not be further described.
綜所上述，所以本發明之『具有產業之可利用性』應已毋庸置疑，除此之外，在本案實施例所揭露出的特徵技術，於申請之前並未曾見於諸刊物，亦未曾被公開使用，不但具有如上所述功效增進之事實，更具有不可輕忽的附加功效，是故，本發明的『新穎性』以及『進步性』都已符合專利法規，爰依法提出發明專 利之申請，祈請惠予審查並早日賜准專利，實感德便。 In view of the above, the "industrial availability" of the present invention should be unquestionable. In addition, the feature technology disclosed in the embodiment of the present invention has not been seen in publications before the application, nor has it been disclosed. The use of not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention are in compliance with the patent regulations, and the inventions are proposed according to law. The application for the benefit, pray for the review and early grant of the patent, the real sense of virtue.
以上所述實施例之揭示係用以說明本發明，並非用以限制本發明，故舉凡數值之變化與等效元件之置換，仍應隸屬本發明之範疇。 The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention.
1‧‧‧螺桿 1‧‧‧ screw
11‧‧‧滾動溝 11‧‧‧ rolling groove
2‧‧‧螺帽 2‧‧‧ nuts
21‧‧‧穿孔 21‧‧‧Perforation
211‧‧‧滾動槽 211‧‧‧ rolling groove
22‧‧‧螺絲孔 22‧‧‧ screw holes
23‧‧‧安裝槽 23‧‧‧Installation slot
3‧‧‧本體 3‧‧‧ Ontology
31‧‧‧通孔 31‧‧‧through hole
311‧‧‧唇部 311‧‧‧Lip
32‧‧‧容置部 32‧‧‧ 容部
321‧‧‧儲存空間 321‧‧‧ storage space
4‧‧‧磁性件 4‧‧‧Magnetic parts
41‧‧‧貫穿孔 41‧‧‧through holes
5‧‧‧滾動體 5‧‧‧ rolling elements
G‧‧‧固定件 G‧‧‧Fixed parts
X‧‧‧軸方向 X‧‧‧axis direction
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102127238A TWI512217B (en) | 2013-07-30 | 2013-07-30 | Ball screw with magnetic dustproof device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW102127238A TWI512217B (en) | 2013-07-30 | 2013-07-30 | Ball screw with magnetic dustproof device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201504545A TW201504545A (en) | 2015-02-01 |
| TWI512217B true TWI512217B (en) | 2015-12-11 |
Family
ID=53018837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW102127238A TWI512217B (en) | 2013-07-30 | 2013-07-30 | Ball screw with magnetic dustproof device |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI512217B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795168A (en) * | 1987-09-10 | 1989-01-03 | Durametallic Corporation | Magnetic seal assembly |
| US5074160A (en) * | 1989-05-17 | 1991-12-24 | Nippon Seiko Kabushiki Kaisha | Feed unit apparatus |
| JP2000346165A (en) * | 1999-06-09 | 2000-12-12 | Thk Co Ltd | Dustproof guide device |
| JP2003172426A (en) * | 2001-12-06 | 2003-06-20 | Nsk Ltd | Ball screw device |
| CN2871985Y (en) * | 2006-03-04 | 2007-02-21 | 孙荣军 | Magnetic sealer |
| CN101142419A (en) * | 2005-02-15 | 2008-03-12 | Skf公司 | A sealing device with an integrated encoder for bearings |
| CN102777500A (en) * | 2012-07-30 | 2012-11-14 | 湖北新火炬科技股份有限公司 | Hub bearing unit with four-lip seal structure |
-
2013
- 2013-07-30 TW TW102127238A patent/TWI512217B/en active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4795168A (en) * | 1987-09-10 | 1989-01-03 | Durametallic Corporation | Magnetic seal assembly |
| US5074160A (en) * | 1989-05-17 | 1991-12-24 | Nippon Seiko Kabushiki Kaisha | Feed unit apparatus |
| JP2000346165A (en) * | 1999-06-09 | 2000-12-12 | Thk Co Ltd | Dustproof guide device |
| JP2003172426A (en) * | 2001-12-06 | 2003-06-20 | Nsk Ltd | Ball screw device |
| CN101142419A (en) * | 2005-02-15 | 2008-03-12 | Skf公司 | A sealing device with an integrated encoder for bearings |
| CN2871985Y (en) * | 2006-03-04 | 2007-02-21 | 孙荣军 | Magnetic sealer |
| CN102777500A (en) * | 2012-07-30 | 2012-11-14 | 湖北新火炬科技股份有限公司 | Hub bearing unit with four-lip seal structure |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201504545A (en) | 2015-02-01 |
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