TWM583002U

TWM583002U - Ball spline set with oil storage groove

Info

Publication number: TWM583002U
Application number: TW108207406U
Authority: TW
Inventors: 黃凌
Original assignee: 黃凌
Priority date: 2019-06-11
Filing date: 2019-06-11
Publication date: 2019-09-01

Abstract

一種具有儲油槽之滾珠花鍵組，其係包含：一花鍵軸、一外筒、二端蓋組以及複數個滾珠，該等端蓋組穿設置至少一迴流通道，該等迴流通道的兩端分別為一第一循環孔及一第二循環孔，其特徵在於，該等端蓋組各凹設至少一儲油槽，該等儲油槽用以容置一潤滑油，該等儲油槽位於該等端蓋組面對該外筒的一側面，該等端蓋組各凹設至少一導溝，該等導溝連通該等儲油槽與該等第一循環孔及該等第二循環孔的其中之一或其組合，用以引導該潤滑油潤滑該滾珠組。藉此，透過該等儲油槽內容置的該潤滑油對該滾珠組進行潤滑，以達到降低該滾珠組的摩擦力。A ball spline group having an oil storage tank, comprising: a spline shaft, an outer cylinder, a two-end cap group and a plurality of balls, wherein the end cap groups are provided with at least one return channel, and the two return channels are The end of the end cap group is respectively a recessed at least one oil storage tank, wherein the oil storage tanks are for accommodating a lubricating oil, wherein the oil storage tanks are located at the end The end cap group faces a side surface of the outer cylinder, and the end cap groups each have at least one guiding groove, and the guiding grooves communicate with the oil storage slots and the first circulation holes and the second circulation holes One or a combination thereof is used to guide the lubricating oil to lubricate the ball set. Thereby, the ball set is lubricated by the lubricating oil placed in the oil reservoirs to reduce the friction of the ball set.

Description

具有儲油槽之滾珠花鍵組Ball spline group with oil storage tank

本創作係與一種滾珠花鍵組有關，特別是關於一種具有儲油槽之滾珠花鍵組。This creation is related to a ball spline set, in particular to a ball spline set with an oil reservoir.

按，滾珠花鍵組是一種外筒在花鍵軸上進行直線運動的直線導軌設備，由於採用鋼球在花鍵槽上滾動的構造，故適用於在傳遞扭矩的同時進行直線運動的機構。Pressing, the ball spline group is a linear guide device for linearly moving the outer cylinder on the spline shaft. Since the steel ball is rolled on the spline groove, it is suitable for a mechanism for linearly moving while transmitting torque.

依據中國專利(CN 201884466U)所述，該專利文獻為滾珠花鍵組及其花鍵軸，其中滾珠花鍵組包括：花鍵軸、外筒、滾珠保持器以及循環運動於該等元件之間的滾珠。其中，滾珠保持器設置於花鍵軸與外筒之間，使滾珠在組裝前，或外筒與花鍵軸分離時，仍能維持其位置避免掉落。According to the Chinese patent (CN 201884466 U), the patent document is a ball spline group and a spline shaft thereof, wherein the ball spline group comprises: a spline shaft, an outer cylinder, a ball cage, and a cyclic motion between the components Balls. Wherein, the ball retainer is disposed between the spline shaft and the outer cylinder to maintain the position of the ball before assembly or when the outer cylinder is separated from the spline shaft to avoid falling.

然而，在滾珠花鍵組中，受限於滾珠與滾珠保持器的結構設計，使得滾珠花鍵組在長時間承受較高的徑向負荷時，滾珠保持器相當容易受損，進而造成滾珠運動時可能發生震動的情形，特別是在滾珠高速運動時，更增加滾珠脫落之機率，造成使用者操作上的風險。其中，不論滾珠與滾珠保持器與花鍵軸在相對移動時，接觸面都存在有摩擦力。如一般物理原則所熟知，摩擦力往往是動能消耗的最大來源，且在使動能轉化為熱能的過程中，不僅虛耗大量能量，更為設備帶來過熱的潛藏危險。However, in the ball spline group, limited by the structural design of the ball and the ball retainer, the ball spline group is relatively easily damaged when subjected to a high radial load for a long time, thereby causing ball movement. When vibration occurs, especially when the ball is moving at a high speed, the probability of the ball falling off is increased, causing a risk to the user's operation. Among them, the frictional force exists on the contact surface regardless of the relative movement of the ball and the ball cage and the spline shaft. As is well known in general physical principles, friction is often the largest source of kinetic energy consumption, and in the process of converting kinetic energy into thermal energy, not only a large amount of energy is consumed, but also the hidden danger of overheating of equipment.

是以，本案創作人在觀察到上述缺失後，認為滾珠花鍵組需具備有潤滑結構之必要，而遂有本創作之產生。Therefore, after observing the above-mentioned defects, the creator of this case believed that the ball spline group needs to have a lubricating structure, and the creation of this creation.

本創作之主要目的係在提供一種具有儲油槽之滾珠花鍵組，其藉由儲油槽內所容置的潤滑油對滾珠進行潤滑，以達到降低滾珠的摩擦力。The main purpose of the present invention is to provide a ball spline group having an oil reservoir, which lubricates the balls by lubricating oil contained in the oil storage tank to reduce the friction of the balls.

為達到上述目的，本創作所提供之一種具有儲油槽之滾珠花鍵組，其係包含：一花鍵軸，在該花鍵軸的表面上沿該花鍵軸之軸向開設至少一軌道槽；一外筒，該外筒滑動地套設於該花鍵軸，在該外筒之內側表面上沿著該外筒之軸向開設至少一滾珠槽，在該外筒之外側表面與內側表面之間沿著該外筒之軸向穿設至少一循環通道，該滾珠槽與該軌道槽對應形成一滾珠通道；二端蓋組，該等端蓋組套設於該花鍵軸，並分別設置於該外筒的兩端，在該等端蓋組面對該外筒的一側面各穿設至少一迴流通道，該等迴流通道的兩端分別為一第一循環孔及一第二循環孔，該等第一循環孔連接該滾珠通道，該等第二循環孔連接該循環通道，該等迴流通道、該循環通道及該滾珠通道共同形成一滾珠循環通道；以及至少一滾珠組，該滾珠組由複數個滾珠所組成，該滾珠組容置於該滾珠循環通道中，且該滾珠組在該滾珠循環通道中移動。In order to achieve the above object, the present invention provides a ball spline group having an oil reservoir, comprising: a spline shaft on which at least one track groove is opened along the axial direction of the spline shaft; An outer cylinder slidably sleeved on the spline shaft, and at least one ball groove is formed on an inner side surface of the outer cylinder along an axial direction of the outer cylinder, and an outer side surface and an inner side surface of the outer cylinder At least one circulation passage is disposed along the axial direction of the outer cylinder, the ball groove corresponding to the track groove forms a ball passage; and the two end cover groups are sleeved on the spline shaft, and respectively Provided at the two ends of the outer tube, at least one return channel is disposed on one side of the end cover group facing the outer tube, and the two ends of the return channel are respectively a first circulation hole and a second circulation a first circulation hole connected to the ball passage, the second circulation holes are connected to the circulation passage, the return passage, the circulation passage and the ball passage together form a ball circulation passage; and at least one ball group, The ball group is composed of a plurality of balls, and the ball group Disposed in the ball circulation passage, and the set of balls moving in the ball circulation passage.

其特徵在於，該等端蓋組各凹設至少一儲油槽，該等儲油槽用以容置一潤滑油，該等儲油槽位於該等端蓋組面對該外筒的一側面，該等端蓋組各凹設至少一導溝，該等導溝連通該等儲油槽與該等第一循環孔及該等第二循環孔的其中之一或其組合，用以引導該潤滑油潤滑該滾珠組。The oil storage tank is configured to receive at least one oil storage tank, wherein the oil storage tanks are located at a side of the end cover group facing the outer cylinder, and the oil storage tanks are recessed The end cap group is recessed with at least one guiding groove, and the guiding grooves communicate with the oil storage tank and one or a combination of the first circulation holes and the second circulation holes to guide the lubricating oil to lubricate the Ball set.

較佳地，其中，該等儲油槽設置在該等第一循環孔及該等第二循環孔之間，該等導溝連通該等第二循環孔。Preferably, the oil storage tanks are disposed between the first circulation holes and the second circulation holes, and the guide grooves communicate with the second circulation holes.

較佳地，其中，該軌道槽係由該花鍵軸的表面往該花鍵軸之中心點的方向凹陷的凹槽，該軌道槽由該花鍵軸之一端連通至該花鍵軸之另一端。Preferably, the track groove is a groove recessed from a surface of the spline shaft toward a center point of the spline shaft, the track groove being communicated from one end of the spline shaft to the spline shaft One end.

較佳地，其中，該滾珠槽係由該外筒之內側表面往該外筒之外側表面的方向凹陷的凹槽，該滾珠槽由該外筒之一端連通至該外筒之另一端。Preferably, the ball groove is a groove recessed from an inner side surface of the outer tube toward an outer side surface of the outer tube, and the ball groove is communicated from one end of the outer tube to the other end of the outer tube.

較佳地，其中，還包含二外蓋，該等外蓋套設於該花鍵軸，該等外蓋分別設置在該等端蓋組面對該外筒之一側面的另一側面，該外筒、該等端蓋組及該等外蓋各穿設二穿孔，該等穿孔係供二鎖螺件穿入，使該外筒、該等端蓋組及該等外蓋緊密結合。Preferably, the outer cover is sleeved on the spline shaft, and the outer covers are respectively disposed on the other side of the side cover group facing one side of the outer cylinder, The outer tube, the end cap group and the outer cover are respectively provided with two perforations, and the perforations are for the two locking screws to penetrate, so that the outer tube, the end cap groups and the outer covers are tightly coupled.

較佳地，其中，該軌道槽數量為四個，該等軌道槽對稱設置在該花鍵軸的表面上。Preferably, the number of the track grooves is four, and the track grooves are symmetrically disposed on the surface of the spline shaft.

較佳地，其中，該滾珠通道及該循環通道的數量各別為四個，該迴流通道的數量為八個，該等滾珠通道、該等循環通道及該等迴流通道共同形成四個該滾珠循環通道。Preferably, the number of the ball passages and the circulation passages is four, and the number of the return passages is eight, and the ball passages, the circulation passages, and the return passages jointly form four of the balls. Loop channel.

較佳地，其中，該等端蓋組分別係由一第一蓋體及一第二蓋體所組成，該等第一蓋體各凹設至少一凹陷部，該等第二蓋體各至少凸設與該凹陷部搭配的一凸出部。Preferably, the end caps are respectively composed of a first cover body and a second cover body, and the first cover bodies are respectively recessed with at least one recessed portion, and the second cover bodies are each at least A protrusion corresponding to the recess is protruded.

較佳地，其中，該等凹陷部係為一第一弧形溝，該等凸出部各具有一第二弧形溝，該等第一弧形溝與該等第二弧形溝組合成該等迴流通道。Preferably, the concave portions are a first curved groove, and the protruding portions each have a second curved groove, and the first curved grooves are combined with the second curved grooves. These return channels.

較佳地，其中，該外筒的其中一端係具有一凸緣部，該凸緣部係由該外筒之內側表面往該外筒之外側表面的方向凸出。Preferably, one end of the outer cylinder has a flange portion protruding from the inner side surface of the outer cylinder toward the outer side surface of the outer cylinder.

本創作所提供之具有儲油槽之滾珠花鍵組，藉由該儲油槽容置該潤滑油，透過該導溝引導該潤滑油滋潤該滾珠組。藉此，本創作該儲油槽可直接對該滾珠組提供該潤滑油，以降低該滾珠組與該花鍵軸間的摩擦力，其提高該滾珠花鍵組的使用壽命。此外，本創作之儲油槽凹設於該等端蓋組面對該外筒的一側面，該等端蓋組與該外筒緊密結合，故可以一定程度地阻絕環境中的水氣、塵埃及異物，從而避免該潤滑油與水氣混雜，使該潤滑油變質，折損潤滑效果。The ball spline group provided with the oil storage tank provided by the present invention receives the lubricating oil through the oil storage tank, and guides the lubricating oil through the guide groove to moisturize the ball group. Thereby, the oil storage tank can directly supply the lubricating oil to the ball group to reduce the friction between the ball group and the spline shaft, which improves the service life of the ball spline group. In addition, the sump of the present invention is recessed on a side of the end cap group facing the outer cylinder, and the end cap group is tightly coupled with the outer cylinder, so that the water vapor and dust in the environment can be blocked to a certain extent. Foreign matter, so as to avoid mixing the lubricating oil with moisture, so that the lubricating oil is deteriorated and the lubricating effect is broken.

請參閱圖1，其係為本創作第一實施例之立體圖，並搭配圖2及圖5，其係為本創作第一實施例之分解圖及端蓋組之立體圖。本創作係揭露一種具有儲油槽之滾珠花鍵組100，其係包含：一花鍵軸10，在該花鍵軸10的表面上沿該花鍵軸10之軸向開設至少一軌道槽11。在本實施例中，該軌道槽11係由該花鍵軸10的表面往該花鍵軸10之中心點的方向凹陷的凹槽，該軌道槽11由該花鍵軸10之一端連通至該花鍵軸10之另一端，該花鍵軸10係開設四個該軌道槽11位於該花鍵軸10的表面上，該軌道槽11的數目並不以此為限制，端視應用上的需要。在其他的實施例中，該花鍵軸10可具有其他數目的該軌道槽11。在製作方面上，可利用研磨裝置同時對該花鍵軸10實施加工研磨，能於一次操作中製作完成四個該軌道槽11。Please refer to FIG. 1 , which is a perspective view of a first embodiment of the present invention, and FIG. 2 and FIG. 5 are a perspective view of an exploded view and an end cap group of the first embodiment of the present invention. The present invention discloses a ball spline set 100 having an oil reservoir, which comprises a spline shaft 10 on which at least one track groove 11 is opened in the axial direction of the spline shaft 10. In the present embodiment, the track groove 11 is a groove recessed from the surface of the spline shaft 10 toward the center point of the spline shaft 10, and the track groove 11 is connected to the one end of the spline shaft 10 to the The other end of the spline shaft 10, the spline shaft 10 is provided with four track grooves 11 on the surface of the spline shaft 10. The number of the track grooves 11 is not limited thereto, and the application is required for the end view. . In other embodiments, the spline shaft 10 can have other numbers of the track slots 11. In terms of production, the spline shaft 10 can be simultaneously machined and polished by a grinding device, and four track grooves 11 can be completed in one operation.

一外筒20，該外筒20亦可稱為花鍵螺帽，其為兩端開口的筒狀金屬件。該外筒20與該花鍵軸10之間隙可為0.05公釐至1公釐，但本創作不以此為限制。該外筒20滑動地套設於該花鍵軸10，在該外筒20之內側表面上沿著該外筒20之軸向開設至少一滾珠槽21，在該外筒20之外側表面與內側表面之間沿著該外筒20之軸向穿設至少一循環通道22，該滾珠槽21與該軌道槽11對應形成一滾珠通道50。在本實施例中，該滾珠槽21係由該外筒20之內側表面往該外筒20之外側表面的方向凹陷的凹槽，該滾珠槽21由該外筒20之一端連通至該外筒20之另一端，該外筒20具有四個該滾珠槽21及四個該循環通道22，該滾珠通道50與該循環通道22的數量相同。具體來說，一個該軌道槽11與一個該滾珠槽21對應形成一個該滾珠通道50，一個該滾珠通道50須搭配一個該循環通道22一起使用。An outer cylinder 20, which may also be referred to as a spline nut, is a tubular metal member that is open at both ends. The gap between the outer cylinder 20 and the spline shaft 10 may be from 0.05 mm to 1 mm, but the present invention is not limited thereto. The outer cylinder 20 is slidably sleeved on the spline shaft 10, and at least one ball groove 21 is opened along the axial direction of the outer cylinder 20 on the inner surface of the outer cylinder 20, and the outer surface and the inner side of the outer cylinder 20 At least one circulation passage 22 is bored between the surfaces along the axial direction of the outer cylinder 20. The ball groove 21 and the track groove 11 correspondingly form a ball passage 50. In the present embodiment, the ball groove 21 is a groove recessed from the inner surface of the outer tube 20 toward the outer surface of the outer tube 20, and the ball groove 21 is communicated from the one end of the outer tube 20 to the outer tube. At the other end of the 20, the outer cylinder 20 has four of the ball grooves 21 and four of the circulation passages 22, and the number of the ball passages 50 is the same as the number of the circulation passages 22. Specifically, one of the track grooves 11 and one of the ball grooves 21 form a ball passage 50, and one of the ball passages 50 must be used together with the circulation passage 22.

二端蓋組30，該等端蓋組30套設於該花鍵軸10，並分別設置於該外筒20的兩端，在該等端蓋組30面對該外筒20的一側面各穿設至少一迴流通道60，該等迴流通道60的兩端分別為一第一循環孔31及一第二循環孔32，該等第一循環孔31連接該滾珠通道50，該等第二循環孔32連接該循環通道22，該等迴流通道60、該循環通道22及該滾珠通道50共同形成一滾珠循環通道70。The end cap group 30 is sleeved on the spline shaft 10 and respectively disposed at two ends of the outer cylinder 20, and the end cap group 30 faces each side of the outer cylinder 20 At least one return passage 60 is disposed, and the two ends of the return passages 60 are respectively a first circulation hole 31 and a second circulation hole 32. The first circulation holes 31 are connected to the ball passage 50, and the second circulation The hole 32 is connected to the circulation passage 22, and the return passage 60, the circulation passage 22 and the ball passage 50 together form a ball circulation passage 70.

至少一滾珠組40，該滾珠組40由複數個滾珠401所組成，該滾珠組40容置於該滾珠循環通道70中，且該滾珠組40在該滾珠循環通道70中移動。At least one ball set 40, the ball set 40 is composed of a plurality of balls 401, the ball set 40 is accommodated in the ball circulation passage 70, and the ball set 40 moves in the ball circulation passage 70.

其特徵在於，該等端蓋組30各凹設至少一儲油槽33，如圖5所示，該等儲油槽33用以容置一潤滑油331，該等儲油槽33位於該等端蓋組30面對該外筒20的一側面，該等端蓋組30各凹設至少一導溝34，該等導溝34連通該等儲油槽33與該等第一循環孔31及該等第二循環孔32的其中之一或其組合，用以引導該潤滑油331潤滑該滾珠組40。The oil storage tanks 33 are disposed in the end cap group 30 for accommodating a lubricating oil 331. The oil storage tanks 33 are located in the end cap group. The first end cover group 30 is recessed with at least one guiding groove 34, and the guiding grooves 34 communicate with the oil storage grooves 33 and the first circulation holes 31 and the second One or a combination of the circulation holes 32 is used to guide the lubricating oil 331 to lubricate the ball set 40.

需進一步說明的是，在本實施例中，該滾珠花鍵組100不設置滾珠保持器，而是直接由該軌道槽11及該滾珠槽21形成該滾珠通道50，但本創作不以此為限制，也可以設置滾珠保持器。It should be further noted that, in this embodiment, the ball spline group 100 is not provided with a ball cage, but the ball channel 50 is directly formed by the track groove 11 and the ball groove 21, but this creation does not Limits, you can also set the ball cage.

請參閱圖2，其係為本創作第一實施例之分解圖。該滾珠花鍵組100還包含二外蓋80，該等外蓋80套設於該花鍵軸10，該等外蓋80分別設置在該等端蓋組30面對該外筒20之一側面的另一側面。在本實施例中，該外筒20、該等端蓋組30及該等外蓋80各穿設二穿孔82，該等穿孔82係為對稱設置，該等穿孔82係供二鎖螺件81穿入，使該外筒20、該等端蓋組30及該等外蓋80緊密結合。Please refer to FIG. 2, which is an exploded view of the first embodiment of the creation. The ball spline group 100 further includes two outer covers 80. The outer covers 80 are sleeved on the spline shaft 10, and the outer covers 80 are respectively disposed on one side of the end cap group 30 facing the outer tube 20. The other side. In the present embodiment, the outer tube 20, the end cap group 30 and the outer cover 80 are each provided with two through holes 82. The perforations 82 are symmetrically arranged, and the perforations 82 are provided for the two locking screws 81. The outer tube 20, the end cap groups 30 and the outer covers 80 are tightly joined.

為供進一步瞭解本創作構造特徵、運用技術手段及所預期達成之功效，茲將本創作使用方式加以敘述，相信當可由此而對本創作有更深入且具體瞭解，如下所述：In order to further understand the characteristics of this creation, the use of technical means and the expected results, we will describe the use of this creation, and believe that we can have a deeper and more specific understanding of this creation, as follows:

請參閱圖3a及圖3b，其係為圖1的A-A線之剖面示意圖及圖3a之局部放大圖。進一步定義本創作所述的對稱設置，其意指以通過該花鍵軸10之中心點的一分隔線S，該分隔線S的左右兩側具有相等數目的該等軌道槽11。如圖3a所示，係以該分隔線S的左右兩側分別具有兩個該軌道槽11，該等軌道槽11兩兩成對且對應設置於該花鍵軸10的表面上。值得一提的是，該等滾珠槽21與該等循環通道22也相對於該分隔線S呈對應設置。Please refer to FIG. 3a and FIG. 3b, which are a cross-sectional view taken along line A-A of FIG. 1 and a partial enlarged view of FIG. 3a. The symmetrical arrangement described in this creation is further defined, which means a dividing line S passing through the center point of the spline shaft 10, the left and right sides of the dividing line S having an equal number of the track grooves 11. As shown in FIG. 3a, there are two track grooves 11 on the left and right sides of the dividing line S, and the track grooves 11 are paired and disposed correspondingly on the surface of the spline shaft 10. It is worth mentioning that the ball grooves 21 and the circulation channels 22 are also disposed correspondingly to the separation line S.

如圖3b所示，該等軌道槽11與該等滾珠槽21的槽面分別為哥德型圓弧。該滾珠組40容置在該等滾珠通道50中進行循環運動時，該等滾珠401的表面並不會完全貼合在該等軌道槽11及該等滾珠槽21的槽面，而是呈點接觸的態樣(如接觸點B所示的位置)。在本實施例中，從該等軌道槽11之槽面的中間位置處各係以一連接線L(假想直線)延伸至該花鍵軸10之中心點，該等滾珠401的接觸點B至該等滾珠401之中心點的直線與該連接線L形成有一夾角，該夾角的角度為40度，但本創作不以此為限制。在其他實施例中，該夾角的角度45度，視需要而調整。 As shown in FIG. 3b, the track faces of the track grooves 11 and the ball grooves 21 are Gothic arcs, respectively. When the ball set 40 is accommodated in the ball passages 50 for cyclic movement, the surfaces of the balls 401 do not completely fit on the groove faces of the track grooves 11 and the ball grooves 21, but are dots. The state of contact (such as the position shown by contact B). In the present embodiment, from the middle of the groove surface of the track grooves 11, each of the lines extends to a center point of the spline shaft 10 by a connecting line L (the imaginary straight line), and the contact point B of the balls 401 is A straight line of the center point of the balls 401 forms an angle with the connecting line L The angle The angle is 40 degrees, but this creation is not limited to this. In other embodiments, the angle The angle is 45 degrees and is adjusted as needed.

請參閱圖4，其係為本創作第一實施例之局部剖面圖。兩個該端蓋組30各具有四個該迴流通道60，其係對應前述其他組件結構，但並不以此為限制。該等迴流通道60位在該等滾珠通道50及該等循環通道22的兩端，且該等滾珠通道50、該等循環通道22及該等迴流通道60共同形成四個該滾珠循環通道70，在本實施例中，該滾珠組40的數量為四組，該等滾珠組40各別容置於該等滾珠循環通道70中。具體來說，一個該滾珠通道50、一個該循環通道22及兩個該迴流通道60共同形成一個該滾珠循環通道70，一個該滾珠循環通道70中容置一組該滾珠組40。Please refer to FIG. 4, which is a partial cross-sectional view of the first embodiment of the present invention. The two end cap sets 30 each have four such return passages 60, which correspond to the other components described above, but are not limited thereto. The recirculation passages 60 are located at the two ends of the ball passages 50 and the circulation passages 22, and the ball passages 50, the circulation passages 22 and the return passages 60 jointly form four of the ball circulation passages 70. In this embodiment, the number of the ball sets 40 is four, and the ball sets 40 are respectively accommodated in the ball circulation passages 70. Specifically, one of the ball passages 50, one of the circulation passages 22, and the two of the return passages 60 together form a ball circulation passage 70, and one of the ball circulation passages 70 accommodates a set of the ball groups 40.

請參閱圖5，其係為本創作第一實施例之端蓋組立體圖。該等端蓋組30各凹設四個該儲油槽33，該等儲油槽33位於該等第一循環孔31及該等第二循環孔32之間，該等端蓋組30各凹設四個該導溝34連通該等儲油槽33與該等第二循環孔32，因考慮該潤滑油331的消耗速度，所以只連通該等第二循環孔32，但不以此為限制。在一較佳實施例中，該等端蓋組30各凹設八個該導溝34，該等導溝34各別連通該等儲油槽33與該等第一循環孔31及該等第二循環孔32，雖然潤滑效果較佳，但因該潤滑油331消耗較快，降低了該滾珠花鍵組100的使用壽命。Please refer to FIG. 5 , which is a perspective view of the end cap group of the first embodiment of the present invention. Each of the end cap groups 30 is recessed with four oil reservoirs 33. The oil reservoirs 33 are located between the first circulation holes 31 and the second circulation holes 32. The guide grooves 34 communicate with the oil storage grooves 33 and the second circulation holes 32. Since the consumption speed of the lubricating oil 331 is considered, only the second circulation holes 32 are communicated, but this is not limited thereto. In a preferred embodiment, the end cap groups 30 are recessed with eight guide grooves 34, and the guide grooves 34 respectively connect the oil reservoirs 33 with the first circulation holes 31 and the second portions. The circulation hole 32 has a better lubricating effect, but the lubricating oil 331 is consumed faster, and the service life of the ball spline group 100 is lowered.

請參閱圖6，其係本創作第一實施例之端蓋組分解圖。該等端蓋組30分別係由一第一蓋體35及一第二蓋體36所組成，該等第一蓋體35各凹設至少一凹陷部351，該等第二蓋體36各至少凸設與該等凹陷部351對應的一凸出部361。該等凹陷部351之內側面係為一第一弧形溝3511，該等凸出部361各具有一第二弧形溝3611，該等第一弧形溝3511與該等第二弧形溝3611共同組成該等迴流通道60。具體來說，一個該第一弧形溝3511及一個該第二弧形溝3611共同組成一個該迴流通道60。Please refer to FIG. 6, which is an exploded view of the end cap group of the first embodiment of the present invention. The first cover body 35 is formed by a first cover body 35 and a second cover body 36. Each of the first cover bodies 35 is recessed with at least one recessed portion 351, and the second cover bodies 36 are at least A projection 361 corresponding to the recessed portions 351 is protruded. The inner side surface of the recessed portion 351 is a first curved groove 3511, and each of the protruding portions 361 has a second curved groove 3611, and the first curved groove 3511 and the second curved groove The 3611 collectively constitutes the return passages 60. Specifically, a first curved groove 3511 and a second curved groove 3611 together form a return passage 60.

請參閱圖7，其係為本創作第二實施例之立體圖。相較於第一實施例，本創作的第二實施例的結構差異在於，該外筒20的其中一端係具有一凸緣部23，該凸緣部23係由該外筒20之內側表面往該外筒20之外側表面的方向凸出。藉此，可增加本創作的滾珠花鍵組100的應用範圍。Please refer to FIG. 7, which is a perspective view of a second embodiment of the present invention. Compared with the first embodiment, the structural difference of the second embodiment of the present invention is that one end of the outer cylinder 20 has a flange portion 23 which is formed by the inner surface of the outer cylinder 20 The direction of the outer side surface of the outer cylinder 20 is convex. Thereby, the application range of the ball spline group 100 of the present creation can be increased.

茲，再將本創作之特徵及其可達成之預期功效陳述如下：Hereby, the characteristics of this creation and its achievable expected effects are stated as follows:

本創作之具有儲油槽之滾珠花鍵組100，主要係藉由該儲油槽33及該導溝34的設置，其潤滑該滾珠組40，以降低該滾珠組40在運動時所產生的摩擦力，其提高該滾珠花鍵組100的使用壽命。The ball spline group 100 having the oil storage groove of the present invention is mainly provided by the oil storage groove 33 and the guide groove 34, which lubricates the ball group 40 to reduce the friction generated by the ball group 40 during movement. It increases the service life of the ball spline set 100.

藉此，本創作係具有以下實施功效及技術功效：In this way, the author has the following implementation effects and technical effects:

其一，本創作係透過該儲油槽33儲存該潤滑油331，使該滾珠花鍵組100具有儲存油料的空間，不需要將該滾珠花鍵組100拆解後加入該潤滑油331，導致人員操作不當使得該潤滑油331濺灑或滴落的問題。Firstly, the creation system stores the lubricating oil 331 through the oil storage tank 33, so that the ball spline group 100 has a space for storing oil, and the lubricating oil 331 is not required to be disassembled after the ball spline group 100 is disassembled, resulting in personnel. The problem of improper operation causes the lubricating oil 331 to splash or drip.

其二，本創作係透過該導溝34引導該潤滑油331潤滑該滾珠組40，降低該滾珠組40在運動中所產生的摩擦力，使該滾珠花鍵組100在運動中具有自動潤滑的功效，其可解決因油料添加的多寡不亦估算，導致時有供油過多造成油料外溢，或是供油不足潤滑效力不彰的困擾。Secondly, the creation guides the lubricating oil 331 to lubricate the ball set 40 through the guiding groove 34, and reduces the friction generated by the ball set 40 during the movement, so that the ball spline group 100 has automatic lubrication during the movement. Efficacy, which can solve the problem of the amount of oil added, which leads to the overflow of oil due to excessive oil supply, or the lack of lubrication effect.

綜上所述，本創作在同類產品中實有其極佳之進步性，同時遍查國內外關於此類結構之技術資料，文獻中亦未發現有相同的構造存在在先，是以，本創作時已具備新型專利要件，爰依法提出申請。In summary, this creation has excellent progress in similar products, and at the same time, it has been inspected at home and abroad for technical information on such structures. The same structure has not been found in the literature. At the time of creation, new patent requirements have been established, and applications have been filed according to law.

惟，以上所述者，僅係本創作之較佳可行實施例而已，實施例之間若無明顯相斥的情況，其特徵可彼此結合替換應用。並且，舉凡應用本創作說明書及申請專利範圍所為之等效結構變化，理應包含在本創作之專利範圍內。However, the above-mentioned ones are only preferred embodiments of the present invention, and if there is no obvious remorse between the embodiments, the features may be combined with each other to replace the application. In addition, the equivalent structural changes that apply to the scope of this application and the scope of the patent application are included in the scope of the patent.

100‧‧‧具有儲油槽之滾珠花鍵組 10‧‧‧花鍵軸 11‧‧‧軌道槽 20‧‧‧外筒 21‧‧‧滾珠槽 22‧‧‧循環通道 23‧‧‧凸緣部 30‧‧‧端蓋組 31‧‧‧第一循環孔 32‧‧‧第二循環孔 33‧‧‧儲油槽 331‧‧‧潤滑油 34‧‧‧導溝 35‧‧‧第一蓋體 351‧‧‧凹陷部 3511‧‧‧第一弧形溝 36‧‧‧第二蓋體 361‧‧‧凸出部 3611‧‧‧第二弧形溝 40‧‧‧滾珠組 401‧‧‧滾珠 50‧‧‧滾珠通道 60‧‧‧迴流通道 70‧‧‧滾珠循環通道 80‧‧‧外蓋 81‧‧‧鎖螺件 82‧‧‧穿孔 A-A‧‧‧剖面線 B‧‧‧接觸點 S‧‧‧分隔線 L‧‧‧連接線 ‧‧‧夾角100‧‧‧Ball spline group with oil storage tank 10‧‧‧ Spline shaft 11‧‧‧ Orbital groove 20‧‧‧Outer cylinder 21‧‧‧Rolling groove 22‧‧‧Circulation passage 23‧‧‧Flange 30‧‧‧ End cap group 31‧‧‧ First circulation hole 32‧‧‧Second circulation hole 33‧‧‧ Oil storage tank 331‧‧‧Lubricant 34‧‧‧ Guide groove 35‧‧‧First cover 351 ‧‧‧Depression 3511‧‧‧First curved ditch 36‧‧‧Second cover 361‧‧‧Protruding 3611‧‧‧Second curved ditch 40‧‧‧Rolling group 401‧‧•Rolling ball 50 ‧‧‧Rolling Channel 60‧‧Return Channel 70‧‧‧Rolling Cycle 80‧‧‧Outer Cover 81‧‧‧Lock Screw 82‧‧‧Perforated AA‧‧‧Boundary Line B‧‧‧Contact Point S‧ ‧‧Separate line L‧‧‧ connection line ‧‧‧ Angle

圖1係本創作第一實施例之立體圖。圖2係本創作第一實施例之分解圖。圖3a係圖1的A-A線之剖面示意圖。圖3b係圖3a之局部放大圖。圖4係本創作第一實施例之局部剖面圖。圖5係本創作第一實施例之端蓋組立體圖。圖6係本創作第一實施例之端蓋組分解圖。圖7係本創作第二實施例之立體圖。 Figure 1 is a perspective view of a first embodiment of the present creation. Figure 2 is an exploded view of the first embodiment of the present creation. Figure 3a is a schematic cross-sectional view taken along line A-A of Figure 1. Figure 3b is a partial enlarged view of Figure 3a. Figure 4 is a partial cross-sectional view showing the first embodiment of the present creation. Figure 5 is a perspective view of the end cap assembly of the first embodiment of the present invention. Figure 6 is an exploded view of the end cap assembly of the first embodiment of the present invention. Figure 7 is a perspective view of a second embodiment of the present creation.

Claims

一種具有儲油槽之滾珠花鍵組，其係包含：
一花鍵軸，在該花鍵軸的表面上沿該花鍵軸之軸向開設至少一軌道槽；
一外筒，該外筒滑動地套設於該花鍵軸，在該外筒之內側表面上沿著該外筒之軸向開設至少一滾珠槽，在該外筒之外側表面與內側表面之間沿著該外筒之軸向穿設至少一循環通道，該滾珠槽與該軌道槽對應形成一滾珠通道；
二端蓋組，該等端蓋組套設於該花鍵軸，並分別設置於該外筒的兩端，在該等端蓋組面對該外筒的一側面各穿設至少一迴流通道，該等迴流通道的兩端分別為一第一循環孔及一第二循環孔，該等第一循環孔連接該滾珠通道，該等第二循環孔連接該循環通道，該等迴流通道、該循環通道及該滾珠通道共同形成一滾珠循環通道；以及
至少一滾珠組，該滾珠組由複數個滾珠所組成，該滾珠組容置於該滾珠循環通道中，且該滾珠組在該滾珠循環通道中移動；
其特徵在於，該等端蓋組各凹設至少一儲油槽，該等儲油槽用以容置一潤滑油，該等儲油槽位於該等端蓋組面對該外筒的一側面，該等端蓋組各凹設至少一導溝，該等導溝連通該等儲油槽與該等第一循環孔及該等第二循環孔的其中之一或其組合，用以引導該潤滑油潤滑該滾珠組。 A ball spline group having an oil reservoir, the system comprising:
a spline shaft, on the surface of the spline shaft, at least one track groove is formed along the axial direction of the spline shaft;
An outer cylinder slidably sleeved on the spline shaft, and at least one ball groove is formed on an inner side surface of the outer cylinder along an axial direction of the outer cylinder, and the outer side surface and the inner side surface of the outer cylinder Intersecting at least one circulation channel along the axial direction of the outer cylinder, the ball groove corresponding to the track groove forming a ball passage;
a two-end cover group, the end cover sets are sleeved on the spline shaft, and are respectively disposed at two ends of the outer cylinder, and at least one return passage is disposed on one side of the end cover group facing the outer cylinder The two ends of the return channel are respectively a first circulation hole and a second circulation hole, the first circulation holes are connected to the ball channel, and the second circulation holes are connected to the circulation channel, the return channels, the The circulation channel and the ball channel together form a ball circulation passage; and at least one ball group, the ball group is composed of a plurality of balls, the ball group is accommodated in the ball circulation passage, and the ball group is in the ball circulation passage Medium move
The oil storage tank is configured to receive at least one oil storage tank, wherein the oil storage tanks are located at a side of the end cover group facing the outer cylinder, and the oil storage tanks are recessed The end cap group is recessed with at least one guiding groove, and the guiding grooves communicate with the oil storage tank and one or a combination of the first circulation holes and the second circulation holes to guide the lubricating oil to lubricate the Ball set.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該等儲油槽設置在該等第一循環孔及該等第二循環孔之間，該等導溝連通該等第二循環孔。The ball spline group having an oil storage tank according to claim 1, wherein the oil storage tank is disposed between the first circulation holes and the second circulation holes, and the guide grooves are connected to the same The second circulation hole.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該軌道槽係由該花鍵軸的表面往該花鍵軸之中心點的方向凹陷的凹槽，該軌道槽由該花鍵軸之一端連通至該花鍵軸之另一端。The ball spline group having an oil reservoir according to claim 1, wherein the track groove is a groove recessed from a surface of the spline shaft toward a center point of the spline shaft, the track groove One end of the spline shaft is connected to the other end of the spline shaft.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該滾珠槽係由該外筒之內側表面往該外筒之外側表面的方向凹陷的凹槽，該滾珠槽由該外筒之一端連通至該外筒之另一端。The ball spline group having an oil reservoir according to claim 1, wherein the ball groove is a groove recessed from an inner side surface of the outer tube toward an outer surface of the outer tube, the ball groove being One end of the outer cylinder is connected to the other end of the outer cylinder.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，還包含二外蓋，該等外蓋套設於該花鍵軸，該等外蓋分別設置在該等端蓋組面對該外筒之一側面的另一側面，該外筒、該等端蓋組及該等外蓋各穿設二穿孔，該等穿孔係供二鎖螺件穿入，使該外筒、該等端蓋組及該等外蓋緊密結合。The ball spline group of the oil storage tank according to the first aspect of the invention, further comprising two outer covers, the outer covers are sleeved on the spline shaft, and the outer covers are respectively disposed on the end caps The other side of the side of the outer tube, the outer tube, the end cap group and the outer cover are respectively provided with two perforations, the perforations are for the two locking screws to penetrate, so that the outer tube The end cap sets and the outer covers are tightly coupled.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該軌道槽數量為四個，該等軌道槽對稱設置在該花鍵軸的表面上。The ball spline group having an oil reservoir according to claim 1, wherein the number of the track grooves is four, and the track grooves are symmetrically disposed on a surface of the spline shaft.

如申請專利範圍第6項所述之具有儲油槽之滾珠花鍵組，其中，該滾珠通道及該循環通道的數量各別為四個，該迴流通道的數量為八個，該等滾珠通道、該等循環通道及該等迴流通道共同形成四個該滾珠循環通道。The ball spline group having an oil storage tank according to claim 6, wherein the number of the ball passages and the circulation passages is four, and the number of the return passages is eight, and the ball passages, The circulation channels and the return channels collectively form four of the ball circulation passages.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該等端蓋組分別係由一第一蓋體及一第二蓋體所組成，該等第一蓋體各凹設至少一凹陷部，該等第二蓋體各至少凸設與該凹陷部搭配的一凸出部。The ball spline group of the oil storage tank according to the first aspect of the invention, wherein the end cap groups are respectively composed of a first cover body and a second cover body, and the first cover bodies respectively At least one recessed portion is recessed, and each of the second cover bodies protrudes from at least one protruding portion that matches the recessed portion.

如申請專利範圍第8項所述之具有儲油槽之滾珠花鍵組，其中，該等凹陷部係為一第一弧形溝，該等凸出部各具有一第二弧形溝，該等第一弧形溝與該等第二弧形溝組合成該等迴流通道。The ball spline group having an oil storage tank according to claim 8, wherein the concave portions are a first curved groove, and the protruding portions each have a second curved groove, and the same The first curved groove is combined with the second curved grooves into the return channels.

如申請專利範圍第1項所述之具有儲油槽之滾珠花鍵組，其中，該外筒的其中一端係具有一凸緣部，該凸緣部係由該外筒之內側表面往該外筒之外側表面的方向凸出。The ball spline group having an oil reservoir according to claim 1, wherein one end of the outer cylinder has a flange portion, and the flange portion is from the inner surface of the outer cylinder to the outer cylinder The direction of the outer surface is convex.