JP2010274943A - Tray - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tray which protects a cam shaft during transfer, and improves assembly workability of the cam shaft. <P>SOLUTION: This tray 1 includes a main storage portion 3 which is structured concave with an upward opening and able to store a cam shaft 31 and a cap storage portion 4 able to store a cam cap 41 having a bearing surface 43 for supporting the journal 37 of the cam shaft 31. The cap storage portion 4 includes a first storage portion 21 for storing one end of the cam cap 41 and a second storage portion 22 for storing the other end of the cam cap at a position corresponding to the journal 37 of the cam shaft 31 stored in the main storage portion 3. The portion 21 is provided at a position facing the portion 22 across the main storage portion 3. By storing the cam shaft 31 and the cam cap 41 in the main storage portion 3 and the cap storage portion 4, the bearing surface 43 of the cam cap 41 faces the top surface of the journal 37 of the cam shaft 31. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a tray used for carrying a camshaft and the like.

  Conventionally, a camshaft of a vehicle has been conveyed in a state where it is rotatably assembled to a cylinder head by a cam cap. However, in this case, there is a concern that the journal portion or the like of the cam shaft supported by the cam cap (and the bearing portion of the cylinder head) may be damaged (bent or the like) due to vibration during conveyance. On the other hand, it can be considered that the camshaft, the camcap, and the cylinder head are separately conveyed.

  However, when the camshaft, camcap, and cylinder head are separately transported, the workability at the time of transport and assembly at the delivery destination may be deteriorated, or a dedicated tray for individually accommodating the respective members should be provided. As a result, the number of trays may increase. In particular, a plurality of cam caps are provided corresponding to one camshaft, and each installation position is also determined. Therefore, when the cam cap is conveyed separately from the camshaft, the camshaft is assembled to the cylinder head. There is a concern that the workability may be significantly reduced.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a tray capable of protecting the camshaft during transportation and improving the camshaft assembly workability. There is to do.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A main accommodating portion configured to be concaved so as to open upward, and capable of accommodating a camshaft;
A tray having a cap housing portion capable of housing a cam cap having an arc-shaped bearing surface for supporting a journal portion of the camshaft;
The cap accommodating portion accommodates a first accommodating portion for accommodating one end portion of the cam cap and the other end portion of the cam cap at a position corresponding to the journal portion of the camshaft accommodated in the main accommodating portion. A second containing portion,
The first housing part is provided at a position facing the second housing part across the main housing part,
The tray is characterized in that the cam shaft is accommodated in the main accommodating portion and the cam cap is accommodated in the cap accommodating portion so that the bearing surface of the cam cap faces the upper surface of the journal portion of the cam shaft. .

  According to the means 1, the first storage portion and the second storage portion constituting the cap storage portion are provided with the main storage portion interposed therebetween. For this reason, the cam cap accommodated in the cap accommodating part can also be taken out by lifting the cam shaft accommodated in the main accommodating part. Further, the cap housing portion is formed at a position corresponding to the journal portion of the camshaft housed in the main housing portion. For this reason, the cam shaft and the cam cap taken out from the tray can be set and assembled as they are on the cylinder head without changing the relative positions. Accordingly, it is possible to dramatically improve the workability of assembling the camshaft to the cylinder head.

Mean 2. A main housing portion configured to be concaved so as to open upward, and including an intake side housing portion and an exhaust side housing portion capable of housing the intake camshaft and the exhaust camshaft;
A tray having a cap housing portion capable of housing a cam cap having an arc-shaped bearing surface for supporting a journal portion of the camshaft;
The intake side accommodating portion and the exhaust side accommodating portion are the same as the relative positions in the state in which the intake camshaft and the exhaust camshaft are accommodated in the intake side accommodating portion and the exhaust side accommodating portion, respectively. Provided to be,
The cap accommodating portion accommodates a first accommodating portion for accommodating one end portion of the cam cap and the other end portion of the cam cap at a position corresponding to the journal portion of each camshaft accommodated in the main accommodating portion. And a second accommodating portion
The first housing part is provided at a position facing the second housing part across the main housing part,
The tray is characterized in that the cam shaft is accommodated in the main accommodating portion and the cam cap is accommodated in the cap accommodating portion so that the bearing surface of the cam cap faces the upper surface of the journal portion of the cam shaft. .

  According to the means 2, basically the same effects as those of the means 1 can be obtained. Further, the relative positions of the intake camshaft and the exhaust camshaft that are respectively accommodated in the intake side accommodating portion and the exhaust side accommodating portion are the relative positions of the intake camshaft and the exhaust camshaft when assembled to the cylinder head. Therefore, it is possible to further improve the workability of assembling the camshaft with respect to the cylinder head of the type in which the camshaft is assembled in a pair (twin cam). Also, the cam cap having both the intake camshaft and exhaust camshaft bearing surfaces can be accommodated in the tray so that it can be removed from the tray if the intake camshaft and exhaust camshaft are lifted at once.

  Means 3. The main housing portion and the cap housing portion are configured such that the camshaft and the cam cap are separated when the camshaft and the cam cap are housed in the main housing portion and the cap housing portion, respectively. 3. Tray according to means 1 or 2 characterized.

  According to the means 3, it is possible to avoid collision and friction between the camshaft and the cam cap at the time of conveyance or the like, and it is possible to more reliably prevent damage to the camshaft and the cam cap.

Means 4. The main housing portion is
A plurality of cam accommodating portions each accommodating a plurality of cam portions formed on the camshaft;
A journal housing portion in which the camshaft journal portion is housed;
A cam housing and a journal portion of the camshaft, or a shaft housing portion in which a shaft portion connecting the cam portions is housed,
The cap housing portion is formed corresponding to the journal housing portion,
The shaft accommodating portion includes a bottom wall portion that supports a lower surface of the shaft portion of the camshaft, and a side wall portion that supports a side surface of the shaft portion.
The side wall portion is integrally formed with elastic locking means that abuts on the upper surface side of the shaft portion of the camshaft housed in the main housing portion and restricts the upward movement of the camshaft. The tray according to any one of means 1 to 3, which is characterized.

  According to the means 4, the camshaft can be prevented from rattling or floating, and the camshaft and the cam cap can be prevented from colliding with each other and the camshaft and the cam cap can be prevented from jumping out of the tray. Can do.

  Means 5. When the main housing portion houses the camshaft in the main housing portion, the shaft housing portion and the shaft portion of the camshaft come into contact with each other, and the cam housing portion, the journal housing portion, the cam portion of the camshaft, The tray according to claim 4, wherein the tray is configured to be separated from the journal portion.

  According to the means 5, only the shaft portion of the camshaft is held. For this reason, in the case of conveyance etc., the situation where a cam part and a journal part collide with the cam part and journal part of a cam shaft, and a cam part and a journal part of a camshaft, and it rubs more reliably. Can be prevented. As described in the above means 4, since the camshaft accommodated in the main housing portion is locked by the elastic locking means, the displacement movement of the camshaft in the longitudinal direction is also suppressed, so that it can be conveyed. In this case, it is possible to suppress a situation in which the cam accommodating portion and the journal accommodating portion collide with the cam portion and the journal portion of the cam shaft.

  Means 6. The cap accommodating portion is configured to accommodate a cam cap and a bolt in a state where a bolt for fixing the cam cap to the cylinder head is inserted into the through holes formed at both ends of the cam cap. The tray according to any one of means 1 to 5, characterized in that:

  According to the means 6, it is not necessary to prepare a separate bolt when the camshaft is assembled to the cylinder head, and the assembling workability can be further improved.

It is the perspective view which looked at the tray from the upper surface side. It is the perspective view which looked at the tray from the lower surface side. It is a perspective view which shows the tray which accommodated the cam shaft and the cam cap. It is a perspective view which shows a tray, a cam shaft, and a cam cap. It is a top view which shows the tray which accommodated the cam shaft and the cam cap. It is the JJ sectional view taken on the line of FIG. It is the KK sectional view taken on the line of FIG. It is the LL sectional view taken on the line of FIG. It is a perspective view which shows the stacked tray. It is a perspective view which shows the nesting tray. It is a schematic diagram which shows the dunnage etc. which are used at the time of conveyance of trays.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIGS. 1 to 5, the tray 1 is configured in a concave shape that opens upward, and includes a main storage portion 3 that can store a cam shaft 31, and a cap storage portion 4 that can store a cam cap 41. It has. The tray 1 of this embodiment is integrally formed by injection molding. The tray 1 is made of polypropylene.

  As shown in FIGS. 3 to 5, the main housing portion 3 of the present embodiment includes an intake camshaft 32 and an exhaust camshaft 33 that are assembled to a cylinder head (not shown) of a DOHC type in-line three-cylinder automobile engine. An intake side accommodating portion 6 and an exhaust side accommodating portion 7 that can be accommodated are provided. Each camshaft 31 is sandwiched between a cam portion 36 for driving an intake valve or an exhaust valve, a bearing portion projecting from the upper surface of the cylinder head, and a cam cap 41, and journal portion 37 supported rotatably. And. Further, the cam cap 41 has an arch shape and has an arcuate (semicircular concave) bearing surface 43 that substantially contacts the journal portion 37, and the cam cap 41 is a cylinder head (cylinder head bearing portion) at both ends. An insertion hole (not shown) is formed through which a bolt 47 for fixing the bolt 47 can be inserted.

  As shown in FIG. 1 and the like, each main accommodating portion 3 (6, 7) includes a plurality of cam accommodating portions 11 each accommodating a plurality of cam portions 36 formed on the camshaft 31, and a journal of the camshaft 31. The journal housing portion 12 in which the portion 37 is housed, and the shaft housing portion in which the cam portion 36 and the journal portion 37 of the camshaft 31 or a portion connecting the cam portions 36 to each other (hereinafter referred to as a shaft portion 38) is housed. 13.

  As shown in FIGS. 6 and 7, the shaft accommodating portion 13 includes a bottom wall portion 15 that supports the lower surface of the shaft portion 38 of the camshaft 31 and a side wall portion 16 that supports the side surface of the shaft portion 38. . The side wall 16 is integrally formed with a locking piece 17 as an elastic locking means for restricting the upward movement of the camshaft 31 accommodated in the main housing 3. The locking piece 17 is connected to the tray 1 only at the upper side, and is elastically deformed in a direction intersecting with the direction in which the camshaft 31 is accommodated in the main accommodating portion 3 (left and right in FIGS. 6 and 7). It is configured to be possible. Further, the locking piece 17 includes a locking protrusion 18 that protrudes toward the inner peripheral side of the shaft housing portion 13 and contacts the upper surface side of the shaft portion 38 of the camshaft 31 that is housed in the main housing portion 3. ing. When the camshaft 31 is housed in the main housing portion 3, the shaft portion 38 of the camshaft 31 is pressed against the locking piece 17 (the locking protrusion 18), and the locking piece 17 is moved to the shaft housing portion 13. The camshaft 31 can be accommodated in the main accommodating portion 3 by being elastically deformed to the outer peripheral side. Further, when the camshaft 31 is completely accommodated in the main accommodating portion 3 (when the shaft portion 38 comes into contact with the bottom wall portion 15), the locking piece 17 is restored to its original state by its own elastic force, The stop protrusion 18 protrudes above the shaft portion 38, and the locking protrusion 18 and the upper surface of the shaft portion 38 come into contact with each other. Thereby, the upward movement of the camshaft 31 is regulated by the locking projection 18, and the accommodated state of the camshaft 31 is maintained.

  In addition, the locking projection 18 includes an inclined portion 19 that extends downward and inclines toward the inner peripheral side of the shaft accommodating portion 13 on the upper surface side. As described above, the camshaft 31 is the main shaft. When the shaft portion 38 is pressed against the locking projection 18 when being housed in the housing portion 3, the locking piece 17 can be elastically deformed relatively smoothly. Further, when the camshaft 31 is housed in the main housing portion 3, the locking projection 18 and the shaft portion 38 are inclined with respect to the removal direction (vertical direction) of the camshaft 31 from the main housing portion 3. It is in contact. For this reason, when taking out the camshaft 31 from the main accommodating part 3, when the latching protrusion 18 and the axial part 38 press-contact, the situation where the axial part 38 will be damaged can be suppressed.

  Note that the shaft portion 38 is partially different in cross-sectional shape, and the bottom wall portion 15 and the locking piece 17 of the shaft housing portion 13 are arranged so that the corresponding shaft portion 38 does not shift and move. It is formed in a shape corresponding to the outer peripheral shape. Further, in the present embodiment, the locking piece 17 has a configuration in which the shaft portion 38 is pressed (biased) obliquely downward by protruding obliquely above the shaft portion 38 and contacting the upper surface side of the shaft portion 38. The bottom wall portion 15 supports the shaft portion 38 against the biasing force of the locking piece 17 by contacting the lower surface side of the shaft portion 38 at a position facing the locking piece 17 with the shaft portion 38 interposed therebetween. It is the composition to do. Further, the locking piece 17 in FIG. 6 is provided on the center side in the width direction of the tray 1, whereas the locking piece 17 in FIG. 7 is provided on the side portion side of the tray 1. Thus, in the longitudinal direction of the main housing portion 3 (camshaft 31), the locking pieces 17 of the shaft housing portions 13 are alternately provided on the left and right, so that the camshaft 31 in the housed state rotates in one direction. Therefore, it is possible to suppress the situation where the locking state by the locking piece 17 is released due to the rotation of the camshaft 31. Incidentally, the shaft portion 38 in FIG. 7 has a hexagonal cross section, and when the timing belt is hooked on the camshaft 31, the work can be performed by pressing the portion with a spanner or the like.

  Further, the main housing portion 3 is configured to support the camshaft 31 only by the shaft housing portion 13 (in contact with the camshaft 31) when the camshaft 31 is housed in the main housing portion 3, and the main housing portion 3 The cam portion 36 and the journal portion 37 of the cam shaft 31 housed in the housing portion 3 are not in contact with the cam housing portion 11 and the journal housing portion 12 (see FIG. 8). Further, the intake side accommodating portion 6 and the exhaust side accommodating portion 7 are assembled to the cylinder head with the intake camshaft 32 and the exhaust camshaft 33 being accommodated in the intake side accommodating portion 6 and the exhaust side accommodating portion 7, respectively. It is provided so as to be the same as the relative position in the state.

  As shown in FIG. 1 and the like, the cap accommodating portion 4 is located at a position corresponding to the journal portion 37 of the cam shaft 31 accommodated in the main accommodating portion 3 (corresponding to the journal accommodating portion 12). The 1st accommodating part 21 which accommodates the one end part of this, and the 2nd accommodating part 22 which accommodates the other end part of the cam cap 41 are provided. The 1st accommodating part 21 is provided in the position facing the 2nd accommodating part 22 on both sides of the main accommodating part 3 (6, 7). The cam shaft 31 and the cam cap 41 are accommodated in the main accommodating portion 3 and the cap accommodating portion 4, respectively, so that the bearing surface 43 of the cam cap 41 faces the upper surface of the journal portion 37 of the cam shaft 31.

  In this embodiment, the cam cap 41 corresponding to the intake camshaft 32 and the cam cap 41 corresponding to the exhaust camcap are connected to each other, and both the intake camshaft 32 and the exhaust camshaft 33 have bearing surfaces. A cam cap 42 (not shown) is also accommodated in the tray 1 such that each bearing surface faces the upper surface of the journal portion 37 of each camshaft 32, 33.

  Further, as shown in FIG. 8, when the main housing 3 and the cap housing 4 house the camshaft 31 and the cam cap 41 (42) in the main housing 3 and the cap housing 4, The cam cap 41 (42) is configured to be separated. Furthermore, in this embodiment, the cap accommodating part 4 is comprised so that the cam cap 41 (42) in the state by which the volt | bolt 47 was penetrated by each insertion hole is accommodated. As shown in FIGS. 1, 2, etc., holes 24 that penetrate vertically are formed in the bottom surfaces of the first housing portion 21 and the second housing portion 22, and the insertion holes for the cam cap 41 in the bolts 47 are formed. A portion projecting downward through the hole is inserted into the hole 24. Accordingly, the lower end portion of the cam cap 41 (42) can be supported by the bottom surfaces of the first housing portion 21 and the second housing portion 22.

  The tray 1 includes a support wall portion 9 that supports the bottom wall portion of the upper tray 1 (1a) at least in the vicinity of the four corners when the same tray 1 is rotated 180 degrees and placed on the upper side. . As a result, as shown in FIG. 9, the trays 1 accommodating the camshaft 31 and the cam caps 41 and 42 can be stacked (stacked). In the state where the tray 1 is stacked, the cam shaft 31 and the cam caps 41 and 42 accommodated in the lower tray 1 (1b) do not come into contact with the upper tray 1 (1a). In addition, the thickness of the tray 1 is almost constant at any part, and the outer shape of the tray 1 and the inner shape of the tray 1 are substantially the same shape, and the tray 1 is a tapered shape that extends upward. I am doing. For this reason, nesting is possible by stacking a plurality of trays 1 in the same direction, as shown in FIG. Accordingly, it is possible to increase the efficiency when the tray 1 from which the camshaft 31 and the cam caps 41 and 42 are taken out is collected at the conveyance source.

  Next, an outline of the flow of conveyance of the camshaft 31 will be described. First, the intake camshaft 32 and the exhaust camshaft 33 are accommodated in the main accommodating portion 3 of the tray 1, and the cam caps 41 and 42 are accommodated in the cap accommodating portion 4. In addition, the compatibility at the time of the assembly | attachment of these members may worsen by the slight manufacturing error of the cam shaft 31, the cam caps 41 and 42, and a cylinder head. For this reason, after confirming that there is no problem in performance by assembling these members once at the transport source, these members are stored in the tray 1 or the like in association with each other.

  Thereafter, the camshaft 31 is transported. The form of transporting the camshaft 31 is not to transport the trays 1 housing the camshafts 31 one by one, but to a plurality of trays housing the camshafts 31. 1 and a plurality of head trays accommodating cylinder heads are conveyed as one unit. For example, as shown in FIG. 11, a dunnage 51 including a plurality of head installation portions 52 in which head trays 55 containing cylinder heads are installed and a plurality of cam installation portions 53 in which the tray 1 is installed is provided. Then, the head tray 55 and the tray 1 are placed and conveyed.

  Specifically, the dunnage 51 in FIG. 11 includes a total of four head installation portions 52 at left and right symmetrical positions in FIG. 11 and one cam (two in total) between the left and right adjacent head installation portions 52. An installation unit 53 is provided. Then, one head tray 55 is installed for each head installation section 52, and two trays 1 stacked one above the other on each cam installation section 53 (stacked as shown in FIG. 9), respectively. Install.

  Among the trays 1 stacked one above the other, the upper tray 1a corresponds to the head tray 55 arranged on the left side of the tray 1a in FIG. 11, and the lower tray 1b is the tray in FIG. This corresponds to the head tray 55 arranged on the right side of 1b. That is, the camshaft 31 (and the cam caps 41 and 42) accommodated in the upper tray 1a and the cylinder head accommodated in the head tray 55 disposed on the left side of the camshaft 31 once in the transport source as described above. The camshaft 31 (and the cam cap 41) and the cylinder head that have been confirmed to be assembled together and have no problem in performance (the camshaft 31 of the lower tray 1b and the head tray disposed on the right side thereof) The same applies to 55 cylinder heads).

  Then, after being transported to the delivery destination, the intake camshaft 32 and the exhaust camshaft 33 are simultaneously lifted upward while holding the tray 1 and supporting the cam caps 41 and 42 by a predetermined take-out device. 31 and cam caps 41 and 42 are removed from the tray 1. Thereafter, the camshaft 31 and the cam caps 41 and 42 accommodated in the upper tray 1a are assembled to the cylinder head accommodated in the head tray 55 installed on the left side of the tray 1a. The cam shaft 31 and the cam caps 41 and 42 accommodated in the tray 1b are assembled to the cylinder head accommodated in the head tray 55 installed on the right side of the tray 1b.

  As described above in detail, according to the present embodiment, the first housing portion 21 and the second housing portion 22 that constitute the cap housing portion 4 are provided with the main housing portion 3 that houses the camshaft 31 interposed therebetween. Yes. For this reason, the cam caps 41 and 42 accommodated in the cap accommodating part 4 can also be taken out by lifting the cam shaft 31 accommodated in the main accommodating part 3. A cap housing portion 4 is formed corresponding to the journal housing portion 12 of the main housing portion 3. Further, in the present embodiment, the relative positions of the intake camshaft 32 and the exhaust camshaft 33 that are housed in the intake side housing portion 6 and the exhaust side housing portion 7 that constitute the main housing portion 3 are set to the cylinder head. This is the same as the relative position of the intake camshaft 32 and the exhaust camshaft 33 in the assembled state. For this reason, the camshaft 31 and the cam caps 41 and 42 taken out from the tray 1 can be set and assembled as they are on the cylinder head without changing the relative positions. Therefore, it is possible to dramatically improve the workability of assembling the camshaft 31 to the cylinder head.

  In the present embodiment, the cam shaft 31 and the cam caps 41 and 42 housed in the main housing portion 3 and the cap housing portion 4 are not in contact with each other. For this reason, it is possible to avoid collision and friction between the camshaft 31 and the cam caps 41 and 42 at the time of conveyance or the like, and it is possible to more reliably prevent damage to the camshaft 31 and the cam caps 41 and 42.

  Further, the shaft accommodating portion 13 of the main accommodating portion 3 is provided with a locking piece 17 that contacts the upper surface side of the shaft portion 38 and restricts the upward movement of the shaft portion 38. For this reason, it is possible to prevent the camshaft 31 from rattling or lifting, preventing collision between the camshaft 31 and the cam caps 41 and 42, and the camshaft 31 and the cam caps 41 and 42 from the outside of the tray 1. Can be prevented from popping out. Further, when the tray 1 is stacked, it is possible to avoid a situation in which the cam shaft 31 and the cam caps 41 and 42 of the lower tray 1 are lifted and the balance of the upper tray 1 is lost.

  Further, the main housing portion 3 is basically configured to contact the camshaft 31 only in the shaft housing portion 13 and not in contact with the camshaft 31 in the cam housing portion 11 and the journal housing portion 12. For this reason, the cam housing portion 11 and the journal housing portion 12 and the cam portion 36 and the journal portion 37 of the camshaft 31 collide with each other or rub against each other during the conveyance and the cam portion 36 and the journal portion 37 are damaged. It is possible to more reliably prevent such a situation. As described above, since the camshaft 31 housed in the main housing portion 3 is locked by the locking piece 17, the shift movement in the longitudinal direction of the camshaft 31 is also suppressed, and at the time of conveyance or the like A situation in which the cam housing portion 11 and the journal housing portion 12 collide with the cam portion 36 and the journal portion 37 of the cam shaft 31 can be suppressed.

  Furthermore, the cap accommodating part 4 is configured to accommodate the cam caps 41 and 42 and the bolt 47 in a state where the bolt 47 is inserted into the insertion hole. For this reason, when assembling the camshaft 31 to the cylinder head, it is not necessary to prepare the bolt 47 separately, and the assembling workability can be further improved.

  In addition, the camshaft 31, the cam caps 41 and 42, and the cylinder head that have been assembled once before the conveyance and confirmed that there is no problem in performance are the same as the camshaft 31 and the cam caps 41 and 42 and the cylinder head during the conveyance. It is divided into heads and packed separately (accommodated in the tray 1 and the head tray 55), but is mounted on the same dunnage 51 and is installed and conveyed so that the correspondence can be understood. . For this reason, the combination of the camshaft 31 and the cam caps 41 and 42 and the cylinder head is mistaken at the conveyance destination (things that have not been assembled once before conveyance are assembled). As a result, it is possible to suppress a situation in which a combination that hinders performance occurs. Therefore, it is possible to prevent a situation in which components that are not defective products become defective products by combination, and it is possible to improve production efficiency, reduce costs, and the like.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the cam shaft 31 (32, 33) of a twin cam is accommodated in the tray 1, but it is also possible to accommodate a cam shaft of a single cam. Furthermore, in the said embodiment, although the cam shaft 31 assembled | attached to an OHC type engine is accommodated in the tray 1, it is good also as accommodating the cam shaft assembled | attached to an OHV type engine in the tray 1, for example. . Further, the number of camshafts 31 accommodated in one tray 1 is not particularly limited. For example, one camshaft 31 may be accommodated for one tray 1 or four camshafts may be accommodated. 31 may be accommodated.

  (B) In the shaft accommodating portion 13, positioning means for restricting the movement of the shaft portion 38 in the longitudinal direction of the camshaft 31 may be provided. In this case, rattling of the camshaft 31 can be more reliably prevented, and the situation where the cam portion 36 and the journal portion 37 collide with the main housing portion 3 and are damaged can be more reliably prevented. it can. In addition, an elastic locking means for restricting the upward movement of the cam cap 41 may be provided for the cap housing portion 4. In this case, the cam cap 41 can be prevented from being lifted more reliably.

  (C) In the above embodiment, the cam setting portion 53 of the dunnage 51 is configured so that the tray 1 can be set only in a predetermined direction, and cannot be set in a different direction (direction rotated 180 degrees). It is good to be. Further, the head installation unit 52 sets the head tray 55 in a predetermined direction (for example, the head tray 55 installed on the head installation unit 52 provided on the left side of the cam installation unit 53 and the right side of the cam installation unit 53. The head tray 55 installed in the head installation section 52 provided in the head may be installed only in a direction rotated 180 degrees relative to each other. Further, a mark (an arrow or the like) may be provided on predetermined side walls of the tray 1 and the head tray 55. When these configurations are employed, the orientations of the upper and lower trays 1a and 1b that are 180 degrees different from each other by stacking can be associated with the orientation of the head tray 55, and these orientations are confirmed. As a result, the above correspondence can be made clearer.

  (D) In the above embodiment, the tray 1 is made of polypropylene, but may be made of other resin materials such as polyethylene, PET, and polyamide.

  DESCRIPTION OF SYMBOLS 1 ... Tray, 3 ... Main accommodating part, 4 ... Cap accommodating part, 6 ... Intake side accommodating part, 7 ... Exhaust side accommodating part, 11 ... Cam accommodating part, 12 ... Journal accommodating part, 13 ... Shaft accommodating part, 17 ... Locking piece, 21 ... first housing portion, 22 ... second housing portion, 31 ... cam shaft, 32 ... intake cam shaft, 33 ... exhaust cam shaft, 36 ... cam portion, 37 ... journal portion, 38 ... shaft portion, DESCRIPTION OF SYMBOLS 41 ... Cam cap, 43 ... Bearing surface, 47 ... Bolt, 51 ... Dungege, 52 ... Head installation part, 53 ... Cam installation part, 55 ... Head tray

Claims (6)

A main accommodating portion configured to be concaved so as to open upward, and capable of accommodating a camshaft;
A tray having a cap housing portion capable of housing a cam cap having an arc-shaped bearing surface for supporting a journal portion of the camshaft;
The cap accommodating portion accommodates a first accommodating portion for accommodating one end portion of the cam cap and the other end portion of the cam cap at a position corresponding to the journal portion of the camshaft accommodated in the main accommodating portion. A second containing portion,
The first housing part is provided at a position facing the second housing part across the main housing part,
The tray is characterized in that the cam shaft is accommodated in the main accommodating portion and the cam cap is accommodated in the cap accommodating portion so that the bearing surface of the cam cap faces the upper surface of the journal portion of the cam shaft. . A main housing portion configured to be concaved so as to open upward, and including an intake side housing portion and an exhaust side housing portion capable of housing the intake camshaft and the exhaust camshaft;
A tray having a cap housing portion capable of housing a cam cap having an arc-shaped bearing surface for supporting a journal portion of the camshaft;
The intake side accommodating portion and the exhaust side accommodating portion are the same as the relative positions in the state in which the intake camshaft and the exhaust camshaft are accommodated in the intake side accommodating portion and the exhaust side accommodating portion, respectively. Provided to be,
The cap accommodating portion accommodates a first accommodating portion for accommodating one end portion of the cam cap and the other end portion of the cam cap at a position corresponding to the journal portion of each camshaft accommodated in the main accommodating portion. And a second accommodating portion
The first housing part is provided at a position facing the second housing part across the main housing part,
The tray is characterized in that the cam shaft is accommodated in the main accommodating portion and the cam cap is accommodated in the cap accommodating portion so that the bearing surface of the cam cap faces the upper surface of the journal portion of the cam shaft. .   The main housing portion and the cap housing portion are configured such that the camshaft and the cam cap are separated when the camshaft and the cam cap are housed in the main housing portion and the cap housing portion, respectively. The tray according to claim 1 or 2, characterized in that The main housing portion is
A plurality of cam accommodating portions each accommodating a plurality of cam portions formed on the camshaft;
A journal housing portion in which the camshaft journal portion is housed;
A cam housing and a journal portion of the camshaft, or a shaft housing portion in which a shaft portion connecting the cam portions is housed,
The cap housing portion is formed corresponding to the journal housing portion,
The shaft accommodating portion includes a bottom wall portion that supports a lower surface of the shaft portion of the camshaft, and a side wall portion that supports a side surface of the shaft portion.
The side wall portion is integrally formed with elastic locking means that abuts on the upper surface side of the shaft portion of the camshaft housed in the main housing portion and restricts the upward movement of the camshaft. The tray according to any one of claims 1 to 3, characterized in that:   When the main housing portion houses the camshaft in the main housing portion, the shaft housing portion and the shaft portion of the camshaft come into contact with each other, and the cam housing portion, the journal housing portion, the cam portion of the camshaft, The tray according to claim 4, wherein the tray is configured to be separated from the journal portion.   The cap accommodating portion is configured to accommodate a cam cap and a bolt in a state where a bolt for fixing the cam cap to the cylinder head is inserted into the through holes formed at both ends of the cam cap. The tray according to claim 1, wherein the tray is provided.

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