Abstract:
The present invention relates to a clip-chain module of rolling unit, which structure had the spacers, the end-part and the link-belt. The characteristic of the clip-chain module of rolling unit was made up of one or upward half clip-chains, thereby can reduce the friction of the rolling element and improve the difficulty of the process. Therefore, this invention can enhance the competitiveness of this product.

Description:
BACKGROUND OF THE INVENTION 
   1. Field of the Invention 
   The present invention relates to a clip-chain module of rolling unit, and more particularly to a receiving device for receiving rolling elements, which is applied to rolling units such as linear guide way, ball screw and linear rolling bearing. Normally the rolling unit is applied to mechanical, electronic, automatic equipment, semi-conduct device and the likes. 
   2. Description of the Prior Arts 
   The receiving device for receiving rolling elements of prior arts generally can be divided into two categories: first one is an independent individual receiver, and another one is a receiver made up of plural independent individuals. As shown in  FIG. 11 , wherein the slide block  11  is mounted onto a rail and slides thereon, which is interiorly provided with a plurality of rolling elements  20  and between every two neighboring rolling elements  20  is provided with a single receiver  30  so as to prevent the rolling elements  20  from striking with each other. It is time-consuming to assemble this rolling unit by alternatively inserting the rolling element and single receiver in the slide block, furthermore, the receivers and the rolling elements are coupled with each other closely, such will cause interference in the rolling of the rolling element. 
   With reference to  FIG. 12 , which shows a receiver made up of plural independent individuals, wherein the receiver  31  is made up of plural independent spacers  311  linked together by a flexible chain  312 , so as to confine the respective rolling elements  20  in the intervals between paired neighboring spacers  311 . The method of making this kind of receiver  31  is by putting the rolling elements in a mould and made by plastic ejection moulding, the material and the ejection moulding machine should be high quality, thus the production cost is relatively increased. Furthermore, due to the special manufacturing method, the receivers and the rolling elements are coupled with each other closely, such will interfere in the rolling of the rolling element. 
   The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional chip-chain module of rolling unit. 
   SUMMARY OF THE INVENTION 
   In accordance with one aspect of the present invention is to provide a clip-chain module of rolling unit, which includes the spacer, the end-part and the link-belt. The characteristic of the clip-chain module of rolling unit was made up of one or upward half clip-chains thereby can reduce the friction of the rolling element and improve the difficulty of the process. Therefore, this invention can enhance the competitiveness of this product. 
   The present invention will become more obvious from the following description when taken in connection with the accompanying drawings, which shows, for purpose of illustrations only, the preferred embodiments in accordance with the present invention. 

   
     BRIEF DESCRIPTION OF THE DRAWINGS 
       FIG. 1  is an illustrative view of showing a clip-chain module of rolling unit of the present invention works with a sliding block; 
       FIG. 2  is an exploded view of a first embodiment of the clip-chain module of rolling unit of  FIG. 1 ; 
       FIG. 3  is a partial amplified view of the half clip-chain of  FIG. 2 ; 
       FIG. 4  is a partial amplified view of a second embodiment of the half clip-chain of  FIG. 2 ; 
       FIG. 5  is a partial amplified view of a third embodiment of the half clip-chain of  FIG. 2 , 
       FIG. 6  is a cross sectional assembly view of the spacer of the clip-chain module of rolling unit in accordance with the present invention; 
       FIG. 7  is a perspective view of the end-part of the clip-chain module of rolling unit; 
       FIG. 8  is a cross-sectional view of the end-part of the clip-chain module of rolling unit; 
       FIG. 9  shows another type clip-chain module of rolling unit of the present invention; 
       FIG. 10  is an illustrative view of showing a second embodiment of a clip-chain module of rolling unit of  FIG. 1 ; 
       FIG. 11  is a perspective view of a receiver of single individual type of prior arts; 
       FIG. 12  is a perspective view of a receiver of prior arts made up of multiple-individuals. 
   

   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
   Referring to  FIG. 1 , which shows a clip-chain module of rolling unit of the present invention working with a sliding block, wherein rolling elements  20  are balls. The each rolling element  20  in the slide block  10  is positioned therein by virtue of a clip-chain module of rolling unit  40 , so as to maintain the respective rolling element  20  stay in a good order and enable them to roll in the slide block  10  in endless circles. 
     FIG. 2  is an exploded view of a first embodiment of the clip-chain module of rolling unit of  FIG. 1 , it is learned from the drawing that the clip-chain module of rolling unit is made up of plural clip-chains, namely, a plurality of combinations of two half clip-chains  40   a . Each of the half clip-chains  40   a  is made up of a link-belt  41 , spacers  42  and end-parts  43 ,  44 . The spacers  42  are connected together with the end-parts  43 ,  44  by virtue of receiving link-belt  411  together with end link-belt  412  of the link-belt  41 . Wherein the spacers  42  serve to space out and receive the rolling elements  20 , each paired neighboring spacers  42  define an interval for accommodation of a rolling element  20  and permitting it to roll therein. 
     FIG. 3  is a partial amplified view of the half clip-chain of  FIG. 2 . It is learned from the drawing that each spacer  42  includes a base portion  421 , a supporting portion  422  and an engaging portion  423 . The engaging portions  423  of the spacers  42  are configured by manner of matching-pair, so as to increase the engaging area after the two half clip-chains are engaged together, thus the spacers  42  between the half clip-chains can be engaged together tightly and properly. The each supporting portion  422  extends out from the base portion  421  at a specific angle, so as to receive the rolling element by manner of point-contact. The base portion  421  of each spacer  42  is integrally linked with the receiving link-belt  411  of the link-belt  41 , such that the plural spacers  42  are connected together in chain by virtue of the receiving link-belt  411 , by this way, the rolling elements can be received in interval of each two relative movable spacers  42 . Furthermore, the inner periphery of the receiving link-belt  411  between each paired neighboring spacers  42  is configured for matching with the external shape of the rolling element, so as to free the rolling of the rolling element from interference. 
     FIG. 4  is a partial amplified view of a second embodiment of the half clip-chain of  FIG. 2 . Wherein on the engaging portion  423  of each spacer  42  is additionally provided with a fixing device, particularly on the top portion of engaging portion  423  is provided with a pin structure formed by manner of matching-pair. Furthermore, at both sides of the engaging portions  423  a rib structure is defined respectively by manner of matching-pair, such that prevent the disengagement of the spacers caused by angular torsion. 
     FIG. 5  is a partial amplified view of a third embodiment of the half clip-chain of  FIG. 2 , wherein the additional fixing devices on the engaging portions  423  of the spacers  42  are configured in the shape of a spline and formed by like manner of matching-pair, such that prevents the disengagement of the spacers caused by angular torsion. 
     FIG. 6  is a cross sectional assembly view of the spacer of the clip-chain module of rolling unit in accordance with the present invention. Wherein each spacer  42  of the half clip-chain has an engaging portion  423  for serving to integrally combine two half spacers  42  together so as to form a complete spacer. The shape and dimension of the base portion  421  of each spacer  42  are decided by the configuration of the corresponding supporting portion  422  as well as the turning curvature of the rolling elements rolling in the slide block. As shown in  FIG. 6A  the combination of the spacer is strip-shaped, the engaging portions  423  are engaged together by an out-and-in manner, the supporting portions  422  radially extend out. The diversity of  FIG. 6B  is that the combination of the spacers is round-shaped. The engaging portions  423  of  FIG. 6C  is characterized as having double convex-concave structure, while the feature of  FIG. 6D  is that the supporting portions  422  extend outward with perpendicular to the receiving link-belt  411 . 
     FIG. 7  is a perspective view of the end-part of the clip-chain module of rolling unit.  FIG. 8  is a cross-sectional view of the end-part of the clip-chain module of rolling unit. The half clip-chains of the present invention each has a first and a second end part  43 ,  44 , both of which are connected by end link-belt  412 , as shown in  FIG. 7 , the end link-belt  412  is flexure-formed so as to has a better flexibility. Moreover, the end parts of the clip-chain module of rolling unit of the present invention have an ability of engaging with each other and capable of receiving the respective rolling element. As shown in  FIG. 8 , wherein at the inner periphery of the end part  43  a bearing portion  431  is formed with corresponding to the shape of the rolling elements for purpose of embracing the endmost rolling element. And alike, at the outer periphery of the end part  43  a connecting portion  432  is defined and shaped for matching with the rolling elements, such that enables the clip-chain module of rolling unit to externally couple a rolling element with its end. In addition, the end parts  43 ,  44  are combined together by inserting end part  44  in end part  43 . The end part  44  is alike defined with a bearing portion  441  for matching with that bearing portion  431  of the end part  43 , such that the end parts  43 ,  44  can be engaged well with each other. 
   Referring to  FIG. 9 , which shows another type clip-chain module of rolling unit of the present invention. Wherein the rolling elements  50  are rollers, the clip-chain module of rolling unit is a combination of half clip-chains, and identically, the spacers  42  serve to space out and receive the respective rolling elements  50 , each two neighboring spacers  42  define an interval therebetween for accommodation of a rolling element  50 . 
     FIG. 10  is an illustrative view of showing a second embodiment of a clip-chain module of rolling unit of  FIG. 1 . Wherein the half clip-chains  40   b  each has a first and a second end part  43 ,  44 , the first and second end parts  43 ,  44  and the plural spacers  42  are connected together, and particularly a central end part  45  is formed in the middle of the half clip-chains  40   b , the spacers  42  at both sides of the central end part  45  are balanced in quantity. In assembling, by inserting a rolling element  20  initially in the central end part  45 , and then folding the both sides of the central end part  45  upward, whenever a spacer  42  is integrated then sequentially insert a rolling element  20  therein, such that forms a complete clip-chain module of rolling unit. 
   While we have shown and described various embodiments in accordance with the present invention, it should be clear to those skilled is in the art that further embodiments may be made without departing from the scope of the present invention.