Oil feed member and lubricant feed mechanism of engine provided with the same

Abstract

Provided are an oil feed member that makes it possible to ensure a wide distance between oil passages and to achieve space saving in the oil passages and a lubricant feed mechanism of an engine provided with the oil feed member. An oil feed member includes a lubricant passage and a plurality of discharge ports that are formed on the downstream end of the lubricant passage and discharge lubricant flowing through the lubricant passage to a lubrication portion. The lubricant passage includes a basis oil passage, a first upstream branch oil passage that branches off from the basis oil passage and allows lubricant guided to the discharge ports to flow therethrough, and a second upstream branch oil passage that branches off from the basis oil passage and allows lubricant guided to the discharge ports to flow therethrough.

1 . An oil feed member for feeding lubricant to a lubrication portion of a valve gear that opens and closes intake and exhaust valves of an engine, the oil feed member comprising:
 a lubricant passage defined by a recess formed on facing surfaces abutting against each other; and   a plurality of discharge ports that are formed on a downstream end of the lubricant passage and discharge lubricant flowing through the lubricant passage to the lubrication portion, wherein   the lubricant passage includes
 a basis oil passage, 
 a first branch oil passage that branches off from the basis oil passage and allows lubricant guided to a first discharge port group including at least two of the discharge ports to flow therethrough, and 
 a second branch oil passage that branches off from the basis oil passage and allows lubricant guided to a second discharge port group including at least two of the discharge ports to flow therethrough. 
   
     
     
         2 . The oil feed member according to  claim 1 , wherein
 a branch point between the second branch oil passage and the basis oil passage is formed on the upstream side with respect to a branch point between the first branch oil passage and the basis oil passage, and   the second branch oil passage includes a pressure loss generating mechanism that generates pressure loss in lubricant flowing through the second branch oil passage.   
     
     
         3 . The oil feed member according to  claim 2 , wherein the pressure loss generating mechanism is configured by making the second branch oil passage different from the first branch oil passage in at least one of the length, the shape, and the flow passage cross-sectional area. 
     
     
         4 . The oil feed member according to  claim 2 , wherein a downstream end of the first branch oil passage is disposed near the first discharge port group, and a downstream end of the second branch oil passage is disposed near the second discharge port group. 
     
     
         5 . A lubricant feed mechanism of an engine comprising the oil feed member according to  claim 1 . 
     
     
         6 . The oil feed member according to  claim 3 , wherein a downstream end of the first branch oil passage is disposed near the first discharge port group, and a downstream end of the second branch oil passage is disposed near the second discharge port group. 
     
     
         7 . A lubricant feed mechanism of an engine comprising the oil feed member according to  claim 2 . 
     
     
         8 . A lubricant feed mechanism of an engine comprising the oil feed member according to  claim 3 . 
     
     
         9 . A lubricant feed mechanism of an engine comprising the oil feed member according to  claim 4 . 
     
     
         10 . A lubricant feed mechanism of an engine comprising the oil feed member according to  claim 5 .