TWM607269U

TWM607269U - Ball screw rod

Info

Publication number: TWM607269U
Application number: TW109214144U
Authority: TW
Inventors: 樊俊昂
Original assignee: 樊俊昂
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-02-01
Also published as: CN214146459U

Abstract

一種滾珠螺桿，包含一螺帽、一螺桿軸、一滾動單元及一循環件。該螺帽包括一內周面及一外周面，該螺帽形成一內螺旋溝槽、一容置槽及一卡孔。該螺桿軸形成一外螺旋溝槽，該外螺旋溝槽與該內螺旋溝槽的共同構成一循環通道。該滾動單元包括多個設置於該循環通道內的滾珠。該循環件包括一循環塊及一卡塊，該循環塊卡掣於該容置槽內並具有一內表面，及一外表面，該循環塊的該內表面凹陷形成一連通該循環通道用以導引該等滾珠回流循環的回流溝槽，該卡塊凸設於該外表面且卡掣於該卡孔內。藉此，使得該循環件能夠穩固地固定在該螺帽內。A ball screw includes a nut, a screw shaft, a rolling unit and a circulating part. The nut includes an inner peripheral surface and an outer peripheral surface, and the nut forms an inner spiral groove, an accommodating groove and a clamping hole. The screw shaft forms an outer spiral groove, and the outer spiral groove and the inner spiral groove together form a circulation channel. The rolling unit includes a plurality of balls arranged in the circulation channel. The circulation member includes a circulation block and a clamping block, the circulation block is locked in the containing groove and has an inner surface, and an outer surface. The inner surface of the circulation block is recessed to form a circulation channel for communicating The return groove for guiding the return circulation of the balls, the clamping block is convexly arranged on the outer surface and is clamped in the clamping hole. Thereby, the circulating member can be firmly fixed in the nut.

Description

滾珠螺桿Ball screw

本新型是有關於一種滾珠螺桿，特別是指一種具有循環件的滾珠螺桿。The new model relates to a ball screw, in particular to a ball screw with circulating parts.

滾珠螺桿是藉由能夠循環作動的滾珠與螺帽、螺桿軸及循環件相配合，以減少螺帽與螺桿軸之間相對轉動的摩擦力而得到平順的線性傳動效果。The ball screw is matched with the nut, the screw shaft and the circulating parts through the recirculating ball, so as to reduce the friction between the nut and the screw shaft to obtain a smooth linear transmission effect.

現有循環件與螺帽之間的固定方式，是透過螺絲先穿設於螺帽而後再螺鎖於循環件的螺孔內，以將循環件鎖固於螺帽內。然而，前述透過螺絲鎖固的方式，使得滾珠螺桿的組成構件數量增加，從而造成整體製造成本較高且組裝過程較為複雜不便。The existing fixing method between the circulating part and the nut is to pass the screw through the nut first and then screw it into the screw hole of the circulating part to lock the circulating part in the nut. However, the aforementioned method of screw locking increases the number of components of the ball screw, resulting in higher overall manufacturing costs and more complicated and inconvenient assembly processes.

因此，本新型之一目的，即在提供一種能夠克服先前技術的至少一個缺點的滾珠螺桿。Therefore, one of the objectives of the present invention is to provide a ball screw that can overcome at least one of the disadvantages of the prior art.

於是，本新型滾珠螺桿，包含一螺帽、一螺桿軸、至少一滾動單元，及一循環件。Therefore, the new ball screw includes a nut, a screw shaft, at least one rolling unit, and a circulating part.

該螺帽包括一內周面，及一外周面，該螺帽的該內周面凹陷形成一內螺旋溝槽及一與該內螺旋溝槽連通的容置槽，該螺帽的該外周面凹陷形成至少一連通於該容置槽的卡孔。該螺桿軸穿設於該螺帽內且形成有一與該內螺旋溝槽連通的外螺旋溝槽，該外螺旋溝槽的一部分與該內螺旋溝槽的一部分共同構成至少一循環通道。該滾動單元包括多個設置於該循環通道內的滾珠。該循環件包括一循環塊，及至少一卡塊，該循環塊卡掣於該容置槽內並具有一內表面，及一外表面，該循環塊的該內表面凹陷形成至少一連通該循環通道用以導引該等滾珠回流循環的回流溝槽，該卡塊凸設於該外表面且卡掣於該卡孔內。The nut includes an inner peripheral surface and an outer peripheral surface. The inner peripheral surface of the nut is recessed to form an inner spiral groove and an accommodation groove communicating with the inner spiral groove. The outer peripheral surface of the nut The recess forms at least one clamping hole communicating with the containing groove. The screw shaft passes through the nut and forms an outer spiral groove communicating with the inner spiral groove, and a part of the outer spiral groove and a part of the inner spiral groove together form at least one circulation channel. The rolling unit includes a plurality of balls arranged in the circulation channel. The circulation member includes a circulation block and at least one clamping block. The circulation block is locked in the accommodating groove and has an inner surface and an outer surface. The inner surface of the circulation block is recessed to form at least one connection to the circulation The channel is used to guide the return groove of the return circulation of the balls, and the clamping block is protrudingly arranged on the outer surface and is clamped in the clamping hole.

本新型的滾珠螺桿，該卡孔沿一延伸方向延伸，該延伸方向垂直於該螺帽的一軸向。In the ball screw of the present invention, the clamping hole extends along an extension direction which is perpendicular to an axial direction of the nut.

本新型的滾珠螺桿，該卡孔為一圓形孔，該卡塊為一卡掣於該圓形孔內的圓形凸柱。In the ball screw of the present invention, the locking hole is a circular hole, and the locking block is a circular convex column that is locked in the circular hole.

本新型的滾珠螺桿，該卡孔為一多邊形孔，該卡塊為一卡掣於該多邊形孔內的多邊形凸柱。In the ball screw of the present invention, the locking hole is a polygonal hole, and the locking block is a polygonal convex column that is locked in the polygonal hole.

本新型的滾珠螺桿，該循環件包括一凸設於該內表面且嵌入該外螺旋溝槽內的凸條。In the ball screw of the present invention, the circulating member includes a convex strip projected on the inner surface and embedded in the outer spiral groove.

本新型的滾珠螺桿，該螺帽的該外周面凹陷形成多個沿該軸向相間隔排列的卡孔，該循環塊呈長條狀且其長向平行於該軸向，該循環件包括多個凸設於該外表面且沿該循環塊的長向相間隔排列的卡塊，該等卡塊分別卡掣於該等卡孔內。In the ball screw of the present invention, the outer peripheral surface of the nut is recessed to form a plurality of clamping holes arranged at intervals along the axial direction, the circulating block is elongated and its length is parallel to the axial direction, and the circulating member includes a plurality of A block protruding on the outer surface and arranged at intervals along the longitudinal direction of the circulating block, the block blocks are respectively clamped in the clamping holes.

本新型的滾珠螺桿，該外螺旋溝槽與該內螺旋溝槽共同構成多個循環通道，該滾珠螺桿包含多個滾動單元，該循環塊的該內表面凹陷形成多個分別連通該等循環通道的回流溝槽，該等回流溝槽沿該循環塊的長向相間隔排列，各該回流溝槽用以導引對應的該滾動單元的該等滾珠回流循環。In the ball screw of the present invention, the outer spiral groove and the inner spiral groove jointly constitute a plurality of circulation channels, the ball screw includes a plurality of rolling units, and the inner surface of the circulation block is recessed to form a plurality of circulation channels respectively communicating with the circulation channels The return grooves are arranged at intervals along the long direction of the circulation block, and each return groove is used to guide the ball return circulation of the corresponding rolling unit.

本新型的滾珠螺桿，該螺帽的該外周面凹陷形成多個卡孔，該等卡孔沿該螺帽的一軸向相間隔排列，該循環塊呈長條狀且其長向平行於該軸向，該循環件包括多個凸設於該外表面且沿該循環塊的長向相間隔排列的卡塊，該等卡塊分別卡掣於該等卡孔內。In the ball screw of the present invention, the outer peripheral surface of the nut is recessed to form a plurality of clamping holes, the clamping holes are arranged at intervals along an axial direction of the nut, the circulating block is elongated and its length is parallel to the In the axial direction, the circulation member includes a plurality of clamping blocks protruding on the outer surface and arranged at intervals along the length of the circulation block, and the clamping blocks are respectively clamped in the clamping holes.

本新型的滾珠螺桿，該外螺旋溝槽與該內螺旋溝槽共同構成多個循環通道，該滾珠螺桿包含多個滾動單元，該循環塊呈長條狀且其長向平行於該螺帽的一軸向，該循環塊的該內表面凹陷形成多個分別連通該等循環通道的回流溝槽，該等回流溝槽沿該循環塊的長向相間隔排列，各該回流溝槽用以導引對應的該滾動單元的該等滾珠回流循環。In the ball screw of the present invention, the outer spiral groove and the inner spiral groove together form a plurality of circulation channels, the ball screw includes a plurality of rolling units, the circulation block is elongated and its length is parallel to the nut In the axial direction, the inner surface of the circulation block is recessed to form a plurality of return grooves respectively communicating with the circulation channels. The return grooves are arranged at intervals along the length of the circulation block, and each return groove is used for guiding Leading the balls of the corresponding rolling unit to return circulation.

本新型之功效在於：藉由該循環件的該循環塊卡掣於該螺帽的該容置槽，以及該循環件的該等卡塊分別卡掣於該螺帽的該等卡孔，使得該循環件能夠穩固地固定在該螺帽內。由於該循環件與該螺帽之間不需額外透過如螺絲的鎖固件便能穩固地固定在一起，因此，能降低該滾珠螺桿的組成構件數量，以提升組裝便利性並降低整體製造成本。The effect of the present invention is that the circulation block of the circulation member is locked in the accommodating groove of the nut, and the locking blocks of the circulation member are respectively locked in the holes of the nut, so that The circulating member can be firmly fixed in the nut. Since the circulating member and the nut can be firmly fixed together without additional locking members such as screws, the number of components of the ball screw can be reduced, so as to improve assembly convenience and reduce overall manufacturing costs.

在本新型被詳細描述之前，應當注意在以下的說明內容中，類似的元件是以相同的編號來表示。Before the present invention is described in detail, it should be noted that in the following description, similar elements are represented by the same numbers.

參閱圖1及圖2，是本新型滾珠螺桿100的第一實施例，該滾珠螺桿100包含一螺帽1、一螺桿軸2、多個滾動單元3，及一循環件4。1 and 2 are the first embodiment of the new ball screw 100. The ball screw 100 includes a nut 1, a screw shaft 2, a plurality of rolling units 3, and a circulating member 4.

參閱圖2、圖3及圖4，該螺帽1包括一內周面11、一外周面12，及兩個端面13。該內周面11界定出一用以供該螺桿軸2穿設的通孔14，該通孔14沿該螺帽1的一軸向A延伸。該外周面12相反於該內周面11。該等端面13沿該軸向A相間隔，該通孔14介於該等端面13之間。該螺帽1的該內周面11朝該外周面12方向凹陷形成一內螺旋溝槽15及一與該內螺旋溝槽15連通的容置槽16，該內螺旋溝槽15及該容置槽16皆與該通孔14連通。該內螺旋溝槽15介於該等端面13之間。該容置槽16呈長槽形且延伸於該等端面13之間，該容置槽16的長向平行於該螺帽1的該軸向A。該容置槽16是由該螺帽1的兩個相互平行且相間隔的側面17及一連接於該等側面17之間的弧面18所共同界定而出。該螺帽1的該外周面12朝該弧面18方向凹陷形成多個連通於該容置槽16的卡孔19，該等卡孔19沿該螺帽1的該軸向A相間隔排列，且各該卡孔19沿一垂直於該軸向A的延伸方向D延伸。Referring to FIGS. 2, 3 and 4, the nut 1 includes an inner circumferential surface 11, an outer circumferential surface 12, and two end surfaces 13. The inner peripheral surface 11 defines a through hole 14 for the screw shaft 2 to pass through, and the through hole 14 extends along an axial direction A of the nut 1. The outer circumferential surface 12 is opposite to the inner circumferential surface 11. The end surfaces 13 are spaced apart along the axial direction A, and the through hole 14 is located between the end surfaces 13. The inner circumferential surface 11 of the nut 1 is recessed toward the outer circumferential surface 12 to form an inner spiral groove 15 and an accommodating groove 16 communicating with the inner spiral groove 15. The inner spiral groove 15 and the accommodating groove 15 The grooves 16 are in communication with the through hole 14. The inner spiral groove 15 is located between the end surfaces 13. The accommodating groove 16 has a long groove shape and extends between the end surfaces 13, and the longitudinal direction of the accommodating groove 16 is parallel to the axial direction A of the nut 1. The accommodating groove 16 is defined by two parallel and spaced side surfaces 17 of the nut 1 and an arc surface 18 connected between the side surfaces 17. The outer peripheral surface 12 of the nut 1 is recessed toward the arc surface 18 to form a plurality of clamping holes 19 communicating with the accommodating groove 16, and the clamping holes 19 are arranged at intervals along the axial direction A of the nut 1, and Each of the clamping holes 19 extends along an extension direction D perpendicular to the axial direction A.

該螺桿軸2用以穿設於該螺帽1的該通孔14內，該螺桿軸2形成有一能與該內螺旋溝槽15連通的外螺旋溝槽21。該外螺旋溝槽21能與該內螺旋溝槽15共同構成多個循環通道P，各該循環通道P是由該外螺旋溝槽21的一部分與該內螺旋溝槽15的一部分所構成。The screw shaft 2 is used to pass through the through hole 14 of the nut 1, and the screw shaft 2 is formed with an outer spiral groove 21 that can communicate with the inner spiral groove 15. The outer spiral groove 21 and the inner spiral groove 15 can form a plurality of circulation channels P, each of the circulation channels P is formed by a part of the outer spiral groove 21 and a part of the inner spiral groove 15.

該等滾動單元3的數量與該等循環通道P的數量相同。各該滾動單元3包括多個滾珠31，該等滾珠31用以設置於對應的該循環通道P內。The number of the rolling units 3 is the same as the number of the circulation channels P. Each rolling unit 3 includes a plurality of rolling balls 31, and the rolling balls 31 are arranged in the corresponding circulation channel P.

參閱圖3、圖4、圖5及圖6，該循環件4包括一循環塊41、多個凸條42，及多個卡塊43。該循環塊41呈長條狀且其長向平行於該螺帽1的該軸向A，該循環塊41用以容置於該容置槽16內。該循環塊41具有一內表面411、一外表面412，及兩個側面413。該內表面411呈弧形且用以面向該螺桿軸2。該外表面412呈弧形且相反於該內表面411，用以抵接於該弧面18。該等側面413連接於該內表面411及該外表面412之間且分別用以抵接於該等側面17。Referring to FIG. 3, FIG. 4, FIG. 5 and FIG. 6, the circulation member 4 includes a circulation block 41, a plurality of protrusions 42, and a plurality of clamping blocks 43. The circulation block 41 is elongated and its length is parallel to the axial direction A of the nut 1, and the circulation block 41 is used to be accommodated in the containing groove 16. The circulating block 41 has an inner surface 411, an outer surface 412, and two side surfaces 413. The inner surface 411 is arc-shaped and used to face the screw shaft 2. The outer surface 412 is arc-shaped and opposite to the inner surface 411 for abutting against the arc surface 18. The side surfaces 413 are connected between the inner surface 411 and the outer surface 412 and used to abut the side surfaces 17 respectively.

該循環塊41的該內表面411朝該外表面412方向凹陷形成多個回流溝槽414，該等回流溝槽414沿該循環塊41的長向相間隔排列。該等回流溝槽414的數量與該等滾動單元3的數量相同，各該回流溝槽414用以連通對應的該循環通道P，以導引對應的該滾動單元3的該等滾珠31回流循環。在本第一實施例中，該等循環通道P的數量、該等滾動單元3的數量以及該等回流溝槽414的數量各自是以三個為例，藉此，使得該螺桿軸2能夠非常順暢地於該螺帽1內轉動，以提升線性傳動該螺帽1的順暢性。需說明的是，該等循環通道P的數量、該等滾動單元3的數量以及該等回流溝槽414的數量也可依照需求各自設為一個、兩個或者是三個以上，不以前述數量為限。The inner surface 411 of the circulation block 41 is recessed toward the outer surface 412 to form a plurality of recirculation grooves 414, and the recirculation grooves 414 are arranged at intervals along the longitudinal direction of the circulation block 41. The number of the return grooves 414 is the same as the number of the rolling units 3, and each of the return grooves 414 is used to communicate with the corresponding circulation channel P to guide the corresponding return circulation of the balls 31 of the rolling unit 3 . In the first embodiment, the number of the circulation channels P, the number of the rolling units 3, and the number of the return grooves 414 are each taken as an example, so that the screw shaft 2 can be very Smoothly rotate in the nut 1 to improve the smoothness of the nut 1 in linear transmission. It should be noted that the number of the circulation channels P, the number of the rolling units 3, and the number of the return grooves 414 can also be set to one, two, or three or more according to requirements. Is limited.

參閱圖2、圖3及圖5，該等凸條42凸設於該循環塊41的該內表面411且沿該循環塊41的長向相間隔排列。各該凸條42形狀與該螺桿軸2的該外螺旋溝槽21形狀相配合，用以嵌入該外螺旋溝槽21內，使該等凸條42能穩定地定位在該螺桿軸2上。Referring to FIGS. 2, 3 and 5, the protruding bars 42 are protrudingly disposed on the inner surface 411 of the circulating block 41 and are arranged at intervals along the length of the circulating block 41. The shape of each convex strip 42 matches the shape of the outer spiral groove 21 of the screw shaft 2 to be embedded in the outer spiral groove 21 so that the convex strips 42 can be stably positioned on the screw shaft 2.

參閱圖2、圖3及圖4，該等卡塊43凸設於該循環塊41的該外表面412且沿該循環塊41的長向相間隔排列。各該卡塊43形狀與各該卡孔19形狀相配合，各該卡塊43用以卡掣於對應的該卡孔19內。在本第一實施例中，各該卡孔19為一圓形孔，各該卡塊43為一用以卡掣於該圓形孔內的圓形凸柱。此外，該等卡孔19的數量以及該等卡塊43的數量各自是以兩個為例，藉此，使得該螺帽1沿著該軸向A以及該循環件4沿著該循環塊41的長向上間隔佈設有相互卡掣的結構，從而能提升相互卡掣的穩固性。需說明的是，各該卡孔19也可為一橢圓形孔，各該卡塊43也可為一用以卡掣於該橢圓形孔內的橢圓形凸柱。該等卡孔19的數量以及該等卡塊43的數量也可依照需求各自設為一個或兩個以上，不以前述數量為限。Referring to FIGS. 2, 3 and 4, the clamping blocks 43 are protrudingly disposed on the outer surface 412 of the circulation block 41 and are arranged at intervals along the length of the circulation block 41. The shape of each locking block 43 matches the shape of each locking hole 19, and each locking block 43 is used for being locked in the corresponding locking hole 19. In the first embodiment, each of the locking holes 19 is a circular hole, and each of the locking blocks 43 is a circular protruding column for locking in the circular hole. In addition, the number of the locking holes 19 and the number of the locking blocks 43 are each taken as an example, so that the nut 1 is along the axial direction A and the circulating member 4 is along the circulating block 41. The interlocking structure is arranged at intervals in the long and upward directions, so as to improve the stability of the interlocking. It should be noted that each of the locking holes 19 can also be an elliptical hole, and each of the locking blocks 43 can also be an elliptical convex column for being locked in the elliptical hole. The number of the card holes 19 and the number of the card blocks 43 can also be set to one or more than two according to requirements, and is not limited to the aforementioned number.

參閱圖2、圖3、圖4及圖6，欲將該螺桿軸2、該等滾動單元3及該循環件4組裝於該螺帽1時，首先，將該循環件4經由其中一個該端面13側穿設於該容置槽16內，使該等卡塊43的位置分別與該等卡孔19的位置對齊。隨後，將該循環件4的該外表面412朝該弧面18的方向移動，當該外表面412抵接於該弧面18時，該等卡塊43分別卡掣於該等卡孔19內，使得該循環件4能穩固地固定在該螺帽1。接著，將該螺桿軸2經由其中一個該端面13側穿設於該螺帽1的該通孔14內。之後，依序將各該滾動單元3的該等滾珠31經由另一個該端面13側穿設於該通孔14以安裝在該螺帽1的該內螺旋溝槽15內，同時旋轉該螺桿軸2，使各該滾動單元3的該等滾珠31能容置於對應的該循環通道P及對應的該回流溝槽414內。Referring to Figure 2, Figure 3, Figure 4 and Figure 6, when the screw shaft 2, the rolling units 3 and the circulating member 4 are to be assembled to the nut 1, first, the circulating member 4 is passed through one of the end faces 13 is inserted into the accommodating groove 16 so that the positions of the locking blocks 43 are aligned with the positions of the locking holes 19 respectively. Subsequently, the outer surface 412 of the circulating member 4 is moved toward the arc surface 18, and when the outer surface 412 abuts on the arc surface 18, the blocking blocks 43 are respectively clamped in the clamping holes 19 , So that the circulating member 4 can be firmly fixed to the nut 1. Then, the screw shaft 2 is inserted into the through hole 14 of the nut 1 via one of the end faces 13 side. After that, the balls 31 of each rolling unit 3 are inserted into the through hole 14 through the other end surface 13 side in order to be installed in the inner spiral groove 15 of the nut 1, while rotating the screw shaft 2. The balls 31 of each rolling unit 3 can be accommodated in the corresponding circulation channel P and the corresponding return groove 414.

藉由該循環件4的該等側面413分別抵接於該螺帽1的該等側面17，使得該循環塊41能穩固地卡掣於該容置槽16內而不會相對於該螺帽1轉動。藉由該等卡塊43分別卡掣於該等卡孔19內，能防止該循環件4沿著該容置槽16的長向滑動進而由其中任一個該端面13脫離該容置槽16。藉由該循環塊41卡掣於該容置槽16以及該等卡塊43分別卡掣於該等卡孔19的設計方式，使得該循環件4不需額外透過其他的鎖固件的鎖固便能夠穩固地固定在該螺帽1內。With the side surfaces 413 of the circulating member 4 abutting against the side surfaces 17 of the nut 1, the circulating block 41 can be firmly clamped in the accommodating groove 16 without being opposed to the nut 1. 1 rotation. As the clamping blocks 43 are respectively clamped in the clamping holes 19, the circulating member 4 can be prevented from sliding along the longitudinal direction of the accommodating groove 16 and then escaping from the accommodating groove 16 by any one of the end surfaces 13. With the design in which the circulating block 41 is locked in the accommodating slot 16 and the locking blocks 43 are respectively locked in the locking holes 19, the circulating member 4 does not need to be additionally locked by other fasteners. It can be firmly fixed in the nut 1.

參閱圖7，是本新型滾珠螺桿100的第二實施例，其整體結構大致與第一實施例相同，不同處在於各該卡孔19的形狀以及各該卡塊43的形狀。Referring to FIG. 7, it is the second embodiment of the new ball screw 100. Its overall structure is roughly the same as that of the first embodiment. The difference lies in the shape of each locking hole 19 and the shape of each locking block 43.

在本第二實施例中，各該卡孔19為一多邊形孔，各該卡塊43為一用以卡掣於該多邊形孔內的多邊形凸柱。具體而言，各該卡孔19是以方形孔為例，而各該卡塊43是以方形凸柱為例。當然，各該卡孔19也可是長方形孔，而各該卡塊43也可是長方形凸柱。In the second embodiment, each of the locking holes 19 is a polygonal hole, and each of the locking blocks 43 is a polygonal convex post for locking in the polygonal hole. Specifically, each of the locking holes 19 is an example of a square hole, and each of the locking blocks 43 is an example of a square protrusion. Of course, each of the locking holes 19 can also be a rectangular hole, and each of the locking blocks 43 can also be a rectangular protrusion.

綜上所述，各實施例的該滾珠螺桿100，藉由該循環件4的該循環塊41卡掣於該螺帽1的該容置槽16，以及該循環件4的該等卡塊43分別卡掣於該螺帽1的該等卡孔19，使得該循環件4能夠穩固地固定在該螺帽1內。由於該循環件4與該螺帽1之間不需額外透過如螺絲的鎖固件鎖固便能穩固地固定在一起，因此，能降低該滾珠螺桿100的組成構件數量，以提升組裝便利性並降低整體製造成本，故確實能達成本新型之目的。In summary, the ball screw 100 of each embodiment is locked in the receiving groove 16 of the nut 1 by the circulating block 41 of the circulating member 4 and the clamping blocks 43 of the circulating member 4 The locking holes 19 of the nut 1 are respectively clamped, so that the circulating member 4 can be firmly fixed in the nut 1. Since the circulating member 4 and the nut 1 can be firmly fixed together without being locked by additional fasteners such as screws, the number of components of the ball screw 100 can be reduced to improve assembly convenience and Reduce the overall manufacturing cost, so it can indeed achieve the goal of new cost.

惟以上所述者，僅為本新型之實施例而已，當不能以此限定本新型實施之範圍，凡是依本新型申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾，皆仍屬本新型專利涵蓋之範圍內。However, the above-mentioned are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

100:滾珠螺桿 1:螺帽 11:內周面 12:外周面 13:端面 14:通孔 15:內螺旋溝槽 16:容置槽 17:側面 18:弧面 19:卡孔 2:螺桿軸 21:外螺旋溝槽 3:滾動單元 31:滾珠 4:循環件 41:循環塊 411:內表面 412:外表面 413:側面 414:回流溝槽 42:凸條 43:卡塊 A:軸向 D:延伸方向 P:循環通道 100: Ball screw 1: nut 11: inner peripheral surface 12: Outer peripheral surface 13: end face 14: Through hole 15: Internal spiral groove 16: holding tank 17: side 18: curved surface 19: Card hole 2: Screw shaft 21: Outer spiral groove 3: rolling unit 31: Ball 4: Loop parts 41: Loop block 411: inner surface 412: Outer Surface 413: side 414: Recirculation groove 42: convex strip 43: card block A: Axial D: Extension direction P: circulation channel

本新型之其他的特徵及功效，將於參照圖式的實施方式中清楚地呈現，其中：圖1是本新型滾珠螺桿的第一實施例的一立體圖；圖2是該第一實施例的一立體分解圖，說明一螺帽、一螺桿軸、多個滾動單元，及一循環件之間的組裝關係；圖3是沿圖1中的III－III線所截取的一剖視圖，說明該螺帽、該螺桿軸、該等滾動單元及該循環件之間的組裝關係，以及多個卡塊分別卡掣於多個卡孔內；圖4是沿圖1中的IV－IV線所截取的一剖視圖，說明該循環件的一循環塊卡掣於一容置槽內，以及各該卡塊卡掣於對應該卡孔內；圖5是該第一實施例的該循環件與對應的該滾動單元相配合的一立體圖；圖6是該第一實施例的一不完整局部剖視圖，說明各該滾動單元的多個滾珠在一循環通道及一回流溝槽之間的流動路徑；及圖7是本新型滾珠螺桿的第二實施例的一俯視圖。 Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, in which: Figure 1 is a perspective view of the first embodiment of the new ball screw; Figure 2 is a perspective exploded view of the first embodiment, illustrating the assembly relationship between a nut, a screw shaft, a plurality of rolling units, and a circulating member; Fig. 3 is a cross-sectional view taken along the line III-III in Fig. 1, illustrating the assembling relationship among the nut, the screw shaft, the rolling units, and the circulating part, and a plurality of blocks are respectively locked in Multiple card holes; 4 is a cross-sectional view taken along the line IV-IV in FIG. 1, illustrating that a circulation block of the circulation member is locked in a accommodating slot, and each of the blocks is locked in a corresponding hole; FIG. 5 is a perspective view of the matching of the circulating member and the corresponding rolling unit of the first embodiment; Fig. 6 is an incomplete partial cross-sectional view of the first embodiment, illustrating the flow paths of the balls of each rolling unit between a circulation channel and a return groove; and Fig. 7 is a top view of the second embodiment of the new ball screw.

100:滾珠螺桿 100: Ball screw

1:螺帽 1: nut

11:內周面 11: inner peripheral surface

12:外周面 12: Outer peripheral surface

13:端面 13: end face

14:通孔 14: Through hole

15:內螺旋溝槽 15: Internal spiral groove

16:容置槽 16: holding tank

19:卡孔 19: Card hole

2:螺桿軸 2: Screw shaft

21:外螺旋溝槽 21: Outer spiral groove

3:滾動單元 3: rolling unit

31:滾珠 31: Ball

4:循環件 4: Loop parts

41:循環塊 41: Loop block

42:凸條 42: convex strip

43:卡塊 43: card block

A:軸向 A: Axial

Claims

一種滾珠螺桿，包含：一螺帽，包括一內周面，及一外周面，該螺帽的該內周面凹陷形成一內螺旋溝槽及一與該內螺旋溝槽連通的容置槽，該螺帽的該外周面凹陷形成至少一連通於該容置槽的卡孔；一螺桿軸，穿設於該螺帽內且形成有一與該內螺旋溝槽連通的外螺旋溝槽，該外螺旋溝槽的一部分與該內螺旋溝槽的一部分共同構成至少一循環通道；至少一滾動單元，包括多個設置於該循環通道內的滾珠；及一循環件，包括一循環塊，及至少一卡塊，該循環塊卡掣於該容置槽內並具有一內表面，及一外表面，該循環塊的該內表面凹陷形成至少一連通該循環通道用以導引該等滾珠回流循環的回流溝槽，該卡塊凸設於該外表面且卡掣於該卡孔內。 A ball screw, including: A nut includes an inner circumferential surface and an outer circumferential surface. The inner circumferential surface of the nut is recessed to form an inner spiral groove and an accommodation groove communicating with the inner spiral groove. The outer circumference of the nut The recessed surface forms at least one card hole communicating with the accommodating groove; A screw shaft passing through the nut and forming an outer spiral groove communicating with the inner spiral groove, a part of the outer spiral groove and a part of the inner spiral groove together form at least one circulation channel; At least one rolling unit including a plurality of balls arranged in the circulation channel; and A circulating piece includes a circulating block, and at least one clamping block, the circulating block is locked in the accommodating groove and has an inner surface, and an outer surface, and the inner surface of the circulating block is recessed to form at least one connecting block The circulation channel is used to guide the return groove for the return circulation of the balls, and the clamping block is protrudingly arranged on the outer surface and is clamped in the clamping hole.

如請求項1所述的滾珠螺桿，其中，該卡孔沿一延伸方向延伸，該延伸方向垂直於該螺帽的一軸向。The ball screw according to claim 1, wherein the clamping hole extends along an extension direction, and the extension direction is perpendicular to an axial direction of the nut.

如請求項2所述的滾珠螺桿，其中，該卡孔為一圓形孔，該卡塊為一卡掣於該圓形孔內的圓形凸柱。The ball screw according to claim 2, wherein the locking hole is a circular hole, and the locking block is a circular convex post locked in the circular hole.

如請求項2所述的滾珠螺桿，其中，該卡孔為一多邊形孔，該卡塊為一卡掣於該多邊形孔內的多邊形凸柱。The ball screw according to claim 2, wherein the locking hole is a polygonal hole, and the locking block is a polygonal convex post that is locked in the polygonal hole.

如請求項1所述的滾珠螺桿，其中，該循環件包括一凸設於該內表面且嵌入該外螺旋溝槽內的凸條。The ball screw according to claim 1, wherein the circulating member includes a convex bar protruding from the inner surface and embedded in the outer spiral groove.

如請求項2至4其中任一項所述的滾珠螺桿，其中，該螺帽的該外周面凹陷形成多個沿該軸向相間隔排列的卡孔，該循環塊呈長條狀且其長向平行於該軸向，該循環件包括多個凸設於該外表面且沿該循環塊的長向相間隔排列的卡塊，該等卡塊分別卡掣於該等卡孔內。The ball screw according to any one of claims 2 to 4, wherein the outer peripheral surface of the nut is recessed to form a plurality of clamping holes arranged at intervals along the axial direction, and the circulating block is elongated and its length Parallel to the axial direction, the circulating member includes a plurality of blocking blocks protruding on the outer surface and arranged at intervals along the length of the circulating block, and the blocking blocks are respectively clamped in the clamping holes.

如請求項6所述的滾珠螺桿，其中，該外螺旋溝槽與該內螺旋溝槽共同構成多個循環通道，該滾珠螺桿包含多個滾動單元，該循環塊的該內表面凹陷形成多個分別連通該等循環通道的回流溝槽，該等回流溝槽沿該循環塊的長向相間隔排列，各該回流溝槽用以導引對應的該滾動單元的該等滾珠回流循環。The ball screw according to claim 6, wherein the outer spiral groove and the inner spiral groove together form a plurality of circulation channels, the ball screw includes a plurality of rolling units, and the inner surface of the circulation block is recessed to form a plurality of The return grooves respectively connected with the circulation channels are arranged at intervals along the long direction of the circulation block, and each of the return grooves is used to guide the return circulation of the balls of the corresponding rolling unit.

如請求項1所述的滾珠螺桿，其中，該螺帽的該外周面凹陷形成多個卡孔，該等卡孔沿該螺帽的一軸向相間隔排列，該循環塊呈長條狀且其長向平行於該軸向，該循環件包括多個凸設於該外表面且沿該循環塊的長向相間隔排列的卡塊，該等卡塊分別卡掣於該等卡孔內。The ball screw according to claim 1, wherein the outer peripheral surface of the nut is recessed to form a plurality of clamping holes, the clamping holes are arranged at intervals along an axial direction of the nut, and the circulating block is elongated and The long direction is parallel to the axial direction, and the circulating member includes a plurality of clamping blocks protruding on the outer surface and arranged at intervals along the length of the circulating block, and the clamping blocks are respectively clamped in the clamping holes.

如請求項1所述的滾珠螺桿，其中，該外螺旋溝槽與該內螺旋溝槽共同構成多個循環通道，該滾珠螺桿包含多個滾動單元，該循環塊呈長條狀且其長向平行於該螺帽的一軸向，該循環塊的該內表面凹陷形成多個分別連通該等循環通道的回流溝槽，該等回流溝槽沿該循環塊的長向相間隔排列，各該回流溝槽用以導引對應的該滾動單元的該等滾珠回流循環。The ball screw according to claim 1, wherein the outer spiral groove and the inner spiral groove jointly form a plurality of circulation channels, the ball screw includes a plurality of rolling units, and the circulation block is elongated and has a longitudinal direction Parallel to an axial direction of the nut, the inner surface of the circulation block is recessed to form a plurality of return grooves respectively communicating with the circulation channels, and the return grooves are arranged at intervals along the longitudinal direction of the circulation block. The recirculation groove is used for guiding the recirculation of the balls of the corresponding rolling unit.