JP2016008573A - Water jacket spacer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water jacket spacer which can be stably inserted and installed in a water jacket, and precisely regulates the circulation of cooling water.SOLUTION: A water jacket spacer 6 adjusting a flow of cooling water in a water jacket of a cylinder block 1, is equipped with a spacer body 7, and a regulating member 10 which has an elastic body lip 8 projecting out from the spacer body toward an inner wall 3a of the water jacket. The regulating member includes a lip base portion 9 for attaching the elastic body lip to the spacer body. At least a lower end portion 9a in a depth direction of the water jacket of the lip base portion is formed so as to extend from a surface 7a of the spacer body on which the regulating member is attached to the other side. The elastic body lip has projecting width d1 from the spacer body which is larger than a distance d1o from the spacer body to the inner wall, and inclines to the depth direction of the water jacket at least on a lower end portion side.

Description

  The present invention relates to a water jacket spacer that is inserted into a water jacket of a cylinder block and adjusts the flow of water in the water jacket.

  In an internal combustion engine, in particular, a water-cooled engine, a water jacket is formed around a cylinder bore in a cylinder block, and cooling water (including cooling water mixed with antifreeze liquid) is circulated through the water jacket and rises as the engine operates. Cooling of the cylinder bore wall is performed. A water jacket spacer is inserted into such a water jacket, and the cooling capacity of the cylinder bore wall is optimized by adjusting the circulation capacity of the cooling water. In this case, since the cylinder bore wall on the upper part of the piston from the top dead center is heated, this part needs to be sufficiently cooled. However, if the lower part is cooled too much, the viscosity of the engine oil becomes high. Since piston friction becomes large, it is necessary to prevent overcooling.

  The partition member (water jacket spacer) described in Patent Document 1 includes a flow path separation member that partitions the water jacket into a predetermined height in the depth direction and separates the upper portion and the lower portion, and is introduced from the cooling water inlet. The cooling water is configured to be guided to the upper flow path of the flow path separation member by the guide wall and the guide slope. As a result, the flow rate of the cooling water flowing through the upper flow path of the flow path separating member is higher than the flow rate of the cooling water flowing through the lower flow path, whereby the cooling efficiency in the upper flow path is higher than the cooling efficiency in the lower flow path. The temperature difference in the vertical direction of the cylinder bore wall is supposed to be suppressed.

Japanese Patent No. 4845620

  Incidentally, the induction slope described in Patent Document 1 corresponds to a regulating member for guiding cooling water to the upper flow path. In the example shown in FIG. 10 of the same patent document, the induction slope is made of a rubber-like elastic body. The edge is formed so as to be in close contact with the inner wall of the water jacket. As described above, when the edge of the guide slope is formed so as to be in close contact with the inner wall of the water jacket, when the water jacket spacer is inserted into the water jacket, friction occurs with the inner wall of the water jacket. In addition, stress is generated in the mounting portion of the induction slope. As a result, there is a concern that the guide slope may be disconnected or damaged.

  The present invention has been made in view of the above circumstances, and provides a novel water jacket spacer that can be stably inserted and mounted in a water jacket and can accurately regulate the flow of cooling water. It is aimed.

  A water jacket spacer according to the present invention is a water jacket spacer that is inserted into a water jacket of a cylinder block and adjusts a flow of cooling water in the water jacket, and includes a spacer main body, and the spacer main body from the spacer main body. A restricting member having an elastic lip protruding toward the inner wall, the restricting member including a lip base for attaching the elastic lip to the spacer body, and at least a depth direction of the water jacket of the lip base Is formed so as to extend from the surface of the spacer body on the side to which the restriction member is attached to the opposite side, and the elastic body lip has a protruding width from the spacer body to the inner wall. Greater than the distance, and at least the lower end side is the water And it is inclined with respect to the depth direction of the jacket.

  The water jacket spacer of the present invention is inserted into the water jacket of the cylinder block, and in this inserted state, the flow of the cooling water introduced into the water jacket is regulated by the regulating member. Since the elastic body lip has a projecting width from the spacer body larger than the distance from the spacer body to the inner wall, the elastic lip is formed on the inner wall of the water jacket when inserted into the water jacket. Elastic contact. Thereby, the cooling water is regulated by the elastic lip. In particular, since at least the lower end side of the elastic body lip is inclined with respect to the depth direction of the water jacket, the entire depth direction is evenly aligned with the inner wall following the inclined portion when inserted into the water jacket. The desired regulation function of the cooling water is accurately exhibited. At this time, the tip of the elastic body lip is elastically contacted with the inner wall with elastic deformation, but the elastic deformation is bent in the component force direction due to the inclination angle of at least the lower end side of the insertion force along the depth direction. Made into shape. In addition, since at least the lower end of the lip base is formed so as to extend from the surface of the spacer main body on the side to which the regulating member is attached, the elastic lip against the inner wall is inserted into the water jacket. The stress accompanying the contact is concentrated on the part extending to the opposite side. This makes it less likely that the restricting member may be detached from the spacer body or damaged when inserted into the water jacket.

In the present invention, the elastic lip may be inclined from the upper end portion to the lower end portion so as to be positioned upstream in the flow direction in the design of the cooling water flowing through the water jacket. The elastic lip extends from the upper end portion to the lower end portion along the depth direction of the water jacket, and the lower end portion warps toward the upstream side in the design flow direction of the cooling water flowing through the water jacket. It is good also as what is inclined like this.
According to this, when cooling water is introduced into the water jacket, the circulation pressure of the cooling water acts on the concave curved portion side of the elastic lip that is elastically deformed so as to bend from the upstream side in the circulation direction. Therefore, the tip of the elastic lip is elastically contacted with the inner wall in a projecting manner. Thereby, even if the circulation pressure of the cooling water acts on the elastic body lip, the tip end portion of the elastic body lip is crushed and is not released from the inner wall, and the cooling water regulating function is stably maintained. .

In the present invention, the restricting member is attached to one side surface of the spacer body, and a lower end portion of the lip base is along a lower end surface of the spacer body or a notch surface of a notch portion formed in the spacer body. It may be formed in a letter shape.
According to this, the stress at the time of insertion into the water jacket is easily concentrated on the lower end portion of the lip base portion by the locking action of the L-shaped lower end portion of the lip base portion with respect to the spacer body. As a result, there is less concern that the restricting member may be detached from the spacer body or damaged when inserted into the water jacket.

In the present invention, the restriction member is attached to one side surface of the spacer body, and a lower end portion of the lip base is along a lower end surface of the spacer body or a notch surface of a notch portion formed in the spacer body. It is good also as what is formed in the U shape so that the other side of a spacer main body may be covered.
According to this, the stress at the time of insertion into the water jacket is easily concentrated on the lower end portion of the lip base portion by the locking action of the U-shaped lower end portion of the lip base portion with respect to the spacer body. As a result, there is less concern that the restricting member may be detached from the spacer body or damaged when inserted into the water jacket.

In the present invention, the restricting member may be attached to one side surface of the spacer body, and a lower end portion of the lip base may be formed in a protruding shape that engages with a through hole formed in the spacer body. .
According to this, due to the engagement of the protrusion-shaped lip base with the through-hole, there is less concern that the regulating member may be detached from the spacer body or damaged when inserted into the water jacket.

In the present invention, the restricting member may be attached to both side surfaces of the spacer body, and the lower end portion of the lip base may be connected to the restricting members on both side surfaces.
According to this, since the regulating member is attached to both side surfaces of the spacer body, the cooling water flowing through both sides of the spacer body is regulated. In addition, since the lower end portion of the lip base connects the restricting members attached to both side surfaces, there is less concern that the restricting member may be detached from the spacer body or damaged when inserted into the water jacket.
In this case, the restricting members on both side surfaces of the spacer main body may be positioned in the vicinity of each other along the circumferential direction of the water jacket with respect to the spacer main body.
According to this, since the elastic lips of the regulating members on both side surfaces elastically contact the inner walls on both sides of the water jacket, the water jacket spacer is stably positioned at a predetermined position. In addition, since the restricting members on both side surfaces are close to each other in the circumferential direction, the stress when inserted into the water jacket is equal on both side surfaces at the lower end of the lip base, and the restricting members are detached from the spacer body or damaged. Or more concern.

In the present invention, the lip base portion may be formed of an annular elastic member, and the restricting member may be attached to the spacer main body via the lip base portion by detachable elastic fitting.
According to this, since the restricting member is attached to the spacer main body by detachable elastic fitting, the spacer main body and the restricting member can be stably integrated. In addition, when the tip of the elastic lip has a problem due to wear or the like, it can be easily replaced. Furthermore, if various regulating members having different specifications are prepared, they can be appropriately selected and replaced with those suitable for the required cooling water flow regulating function.

  According to the water jacket spacer of the present invention, the water jacket can be stably inserted and mounted in the water jacket, and the flow regulation of the cooling water can be accurately performed.

It is a top view which shows roughly an example of the cylinder block in the engine for motor vehicles to which the water jacket spacer which concerns on this invention is applied. It is a figure similar to FIG. 1 which shows another form of the water jacket spacer which concerns on this invention. It is an enlarged view of the A section in Drawing 1, and is a figure showing a first embodiment of a water jacket spacer concerning the present invention. (A) is the figure seen from the arrow B of FIG. 3, It is the figure which extracted and showed only the water jacket spacer of the embodiment. (B) is the CC sectional view expanded sectional view in (a), (c) is the DD sectional view taken in the arrow in (a). FIG. 5 is an enlarged cross-sectional view taken along line EE in FIG. FIG. 6 is a view similar to FIG. 5 showing a first modification of the embodiment. It is a figure similar to FIG.4 (b) (c) which shows the 2nd modification of the embodiment. It is a figure similar to FIG. 5 of the modification. It is the same figure as FIG. 5 which shows the 3rd modification of the embodiment. (A) (b) (c) shows 2nd embodiment of the water jacket spacer which concerns on this invention, (a) is a figure similar to Fig.4 (a), (b) is F- in (a). F line arrow expanded sectional view, (c) is a GG line arrow expanded sectional view in (a). It is a HH arrow directional cross-sectional enlarged view in Fig.10 (a). (A) (b) is a figure similar to FIG.10 (b) (c) which shows the 1st modification of the embodiment. It is a figure similar to FIG. 11 of the modification. It is a figure similar to FIG. 11 which shows the 2nd modification of the embodiment. (A) (b) (c) shows the 3rd modification of the embodiment, (a) is the same figure as Drawing 10 (a), and (b) is a JJ line arrow view in (a). (C) is an enlarged sectional view taken along line KK in (a). FIG. 16 is a cross-sectional view taken along line MM in FIG. (A) (b) (c) shows a third embodiment of a water jacket spacer according to the present invention, (a) is a view similar to FIG. 4 (a), (b) is N- in (a). N line arrow expanded sectional view, (c) is the OO line arrow expanded sectional view in (a). FIG. 18 is an enlarged cross-sectional view taken along line PP in FIG. (A) is a perspective view which shows 4th embodiment of the water jacket spacer which concerns on this invention, (b) is the disassembled perspective view. It is a figure similar to FIG. 3 which shows 5th embodiment of the water jacket spacer which concerns on this invention. It is the same figure as FIG. 3 which shows another example of the application example of the water jacket spacer which concerns on this invention. (A) (b) is a top view of the principal part which shows another example of the application example of the water jacket spacer which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 schematically show an example of a cylinder block of an automobile engine to which a water jacket spacer according to the present invention is applied. A cylinder block 1 shown in FIGS. 1 and 2 constitutes a three-cylinder automobile engine (internal combustion engine), and three cylinder bores 2 are arranged in series. 1a... Is a bolt (not shown) insertion hole for fastening a cylinder head (not shown) to the cylinder block 1 together. A series of open deck type water jackets (cooling water flow paths) 3 are formed around the three cylinder bores 2... The cooling water (including antifreeze liquid) introduction port leading to the water jacket 3 is formed in the cylinder block 1. 4 and a cooling water discharge port 5 are provided. The cooling water outlet 5 is connected to a radiator (not shown) by piping, and the outlet side of the radiator is connected to the cooling water inlet 4 via a water pump (not shown). Thus, the cooling water is configured to circulate between the water jacket 3 and the radiator. When a water jacket (not shown) is also provided in the cylinder head, the water jacket 3 of the cylinder block 1 and the water jacket of the cylinder head are configured to communicate with each other. In this case, the cylinder block 1 may not have the cooling water discharge port 5, and the cylinder head is provided with a cooling water discharge port, to which a pipe leading to the radiator is connected.

  The water jacket spacer 6 shown in FIG. 1 is a so-called partial spacer, which is downstream of the flow direction a in the design of the cooling water introduced from the cooling water inlet 4 and in the vicinity of the cooling water inlet 4. It is arranged in the water jacket 3. Further, the water jacket spacer 6 </ b> A shown in FIG. 2 is an annular spacer over the entire circumference of the water jacket 3 in the circumferential direction. Both the water jacket spacers 6 and 6A are partial spacers and annular spacers, and the shapes of the spacer bodies 7 and 7A are different. However, in the following embodiment, since the main part which is the subject of this invention is common, the structure of A part of FIG. 1 is demonstrated as what is common also to A 'part of FIG. Therefore, in the example of FIG. 2, the same reference numerals are attached to the parts common to FIG. 1. Further, in the following, the terms “upper” and “lower” refer to the opening side (the front side in FIG. 1) along the depth direction b of the water jacket 3 (see FIG. 4A). The side opposite to the opening, that is, the bottom side (the back side in FIG. 1) is used as the bottom.

  A first embodiment of a water jacket spacer according to the present invention will be described with reference to FIGS. 4 (b) and 4 (c), the spacer body 7 is depicted as a straight plate-like body for the sake of convenience. However, as shown in FIG. An arc-shaped plate having a center of curvature as the center. This also applies to FIGS. 7A, 7B, 10B, 10C, 12A, 12B, 15B, 15C, and 17B, 17C. It is.

  The water jacket spacer 6 of the present embodiment includes a spacer main body 7 and a regulating member 10 having an elastic lip 8 protruding from the spacer main body 7 toward the inner wall 3a of the water jacket 3 on the cylinder bore 2 side. The spacer body 7 is made of a synthetic resin molding, and the regulating member 10 includes a lip base 9 for attaching the elastic body lip 8 to the spacer body 7, and at least along the depth direction b of the water jacket 3 of the lip base 9. The lower end portion 9a is formed so as to extend from the surface (one side surface) 7a of the spacer body 7 on the side to which the regulating member 10 is attached to the opposite side. The regulating member 10 of the present embodiment is formed of an integrally molded body made of rubber of the same material, and the elastic lip 8 and the lip base 9 are bonded to the spacer body 7 with an adhesive (not shown) or a synthetic resin. It is integrated by two-color molding of rubber. The lip base 9 may be made of a rubber material or a hard rubber, a synthetic resin, a metal, or the like that is different from the rubber constituting the elastic lip 8, and in this case, the elastic lip 8 and the lip base It is desirable to form the regulating member 10 by performing two-color molding or insert molding of 9. The restricting member 10 is attached to one side surface (the surface facing the cylinder bore 2) 7a of the spacer body 7, and the elastic lip 8 extends from the upper end portion to the lower end portion and is designed for the cooling water flowing through the water jacket 3. It inclines so that it may be located in the upstream of the distribution direction a. The lower end surface 7c of the spacer body 7 is notched upward 7d, and the lower end portion 9a of the lip base 9 along with the lower end portion 8a of the elastic lip 8 faces the opposite side surface 7b along the notch surface of the notched portion 7d. It is formed in an L shape so as to cover one shape. Further, the protruding width d1 of the elastic body lip 8 constituting the regulating member 10 from the spacer body 7 (one side surface 7a) is the distance from the one side surface 7a to the opposing inner wall 3a when disposed in the water jacket 3. It is larger than d1o.

  The water jacket spacer 6 configured as described above is inserted into the water jacket 3 through the opening 30 at the upper end thereof, and is located downstream of the flow direction a in the design of the cooling water and the cooling water inlet 4. Is disposed in the water jacket 3 in the vicinity of. At this time, since the protruding width d1 of the elastic lip 8 is larger than the distance d1o to the opposing inner wall 3a, the elastic lip 8 is inserted into the water jacket 3 in the process of being inserted into the water jacket 3. The inner wall 3a is elastically contacted with deformation. The elastic body lip 8 is inclined so as to be located on the upstream side of the flow direction a of the cooling water flowing through the water jacket 3 from the upper end portion to the lower end portion. The whole b is elastically deformed so as to face the upstream side in the flow direction a and elastically contacts the inner wall 3a evenly. That is, the elastic contact with the elastic deformation of the distal end portion of the elastic body lip 8 with respect to the inner wall 3a is formed in a shape curved in the component force direction due to the inclination angle of the insertion force along the depth direction b. It deform | transforms so that it may face the upstream of the distribution direction a. The two-dot chain line portion of the elastic body lip 8 in FIG. 3 shows the original shape before elastic deformation. When the water jacket spacer 6 is disposed at a predetermined depth, the lower end portion 8a of the elastic lip 8 bent in an L shape comes into contact with or is close to the inner wall 3b on the bottom side of the water jacket 3. Further, the opposite side surface 7b of the spacer body 7 is in a state of being close to or in contact with the inner wall 3c outside the water jacket 3 (on the side opposite to the cylinder bore 2). Further, since the lower end portion 9a of the lip base portion 9 is formed in an L shape so as to extend from one side surface 7a of the spacer body 7 to the opposite side surface 7b, the elastic body lip 8 is elastic against the inner wall 3a when inserted into the water jacket 3. The stress accompanying the contact is concentrated on the portion extending to the opposite side surface 7b. This makes it less likely that the restriction member 10 will be detached from the spacer body or damaged when inserted into the water jacket 3.

  Thus, when the water jacket spacer 6 of this embodiment is inserted and cooling water is introduced into the water jacket 3 arranged at a predetermined position from the cooling water inlet 4, the elastic lip 8 constituting the regulating member 10 is used. Distribution of cooling water is regulated. In particular, since the elastic body lip 8 is elastically contacted with the inner wall 3a evenly in the entire depth direction b, the desired regulation function of the cooling water is accurately exhibited. And since the elastic body lip 8 is elastically in contact with the inner wall 3a in a curved shape so that the concave curved portion faces the upstream side in the flow direction a of the cooling water, when the cooling water is introduced into the water jacket 3, The circulation pressure of the cooling water acts on the concave curved portion side of the elastic lip 8 that is elastically deformed so as to be bent from the upstream side in the flow direction a. Therefore, the tip end portion of the elastic lip 8 is elastically contacted with the inner wall 3a in a projecting manner. Thereby, even if the circulation pressure of the cooling water acts on the elastic body lip 8, the tip of the elastic body lip 8 is not squeezed and released from the inner wall 3a, and the cooling water regulating function is stable. Maintained. Further, in the present embodiment, since the regulating member 10 is inclined from the upper end portion to the lower end portion thereof so as to be positioned on the cooling water flow direction a side, the cylinder bore that is guided to the upper side and requires cooling is required. 2 is effectively cooled, the overcooling of the inner wall 3a on the lower side of the cylinder bore 2 is suppressed, and the entire inner wall 3a is properly cooled. Furthermore, since the lower end portion 9a of the lip base portion 9 is locked in a state where the lower end portion 9a is fitted into the notch portion 7d of the spacer body 7, even if the circulating pressure of the cooling water acts on the lower end portion 8a of the elastic lip 8. , There is no concern about moving away from this part.

FIG. 6 is a view similar to FIG. 5 showing a first modification of the first embodiment. In the water jacket spacer 6 of this example, the notched portion 7d as shown in the above example does not exist in the lower end portion 7c of the spacer main body 7, and the lower end portion 9a of the lip base portion 9 is together with the lower end portion 8a of the elastic lip 8. Along the lower end surface 7c of the spacer body 7, it is formed in an L shape so as to be flush with the opposite side surface 7b. In this example, there is no locking action of the lower end portion 9a of the lip base portion 9 by the cutout portion 7d as in the above example, but the function of the regulating member 10 including the elastic lip 8 is demonstrated in the same manner as in the above example.
Since other configurations are the same as those in the above example, common portions are denoted by the same reference numerals, and descriptions of operations and effects thereof are omitted.
5 and 6, the lower end 9a of the lip base 9 is formed in an L shape so as to be flush with the opposite side surface 7b of the spacer body 7. Thus, if the lower end portion 9a is formed to be flush with the opposite side surface 7b, it is advantageous in terms of strength, but the present invention is not limited to this, and the case where it is not flush is not excluded. . Further, the lower end portion 9a may be formed in a U shape extending over the opposite side surface 7b.

  FIGS. 7A, 7B, and 8 are views similar to FIGS. 4B, 4C, and 5 showing a second modification of the first embodiment. In this example, the regulating members 10 are attached to both the one side surface 7 a and the opposite side surface 7 b of the spacer body 7, and the regulating members 10 on both sides are connected to each other by the lower end portion 9 a of the lip base 9 at the lower end portion of the spacer body 7. Has been. The lower end portion 9a of the lip base portion 9 in this example, together with the elastic lip 8, is U-shaped so as to extend from one side surface 7a to the opposite side surface 7b along the notch surface of the notch portion 7d formed on the lower end surface 7c of the spacer body 7. Is formed. The restricting member 10 attached to the opposite side surface 7b of the spacer body 7 also has the elastic lip 8 extending from the upper end portion to the lower end portion along the depth direction b of the water jacket 3, and upstream of the coolant flow direction a. It is inclined to be located on the side. Further, similarly to the above, the protruding width d1 of the elastic body lip 8 constituting the regulating member 10 attached to the one side surface 7a from the spacer body 7 (one side surface 7a) is as shown in FIG. The distance is greater than the distance d1o from the one side surface 7a to the opposing inner wall 3a. On the other hand, the protruding width d2 of the elastic body lip 8 constituting the regulating member 10 attached to the opposite side surface 7b from the spacer body 7 (opposite side surface 7b) is larger than the distance d2o from the opposite side surface 7b to the opposing inner wall 3c. ing. In the illustrated example, the protrusion width d1 from one side surface 7a and the protrusion width d2 from the opposite side surface 7b, the distance d1o from the one side surface 7a to the inner wall 3a, and the distance d2o from the opposite side surface 7b to the inner wall 3c are both Although drawn equally, they may be different from each other.

  The water jacket spacer 6 of this example is also inserted into the water jacket 3 and arranged at a predetermined position as described above. At this time, since the protruding widths d1 and d2 of the elastic lips 8 and 8 on both sides are larger than the distances d1o and d2o to the opposing inner walls 3a and 3c, in the process of being inserted into the water jacket 3 The elastic body lips 8, 8 on both sides elastically contact the inner walls 3a, 3c of the water jacket 3 with deformation. The elastic lips 8 and 8 on both sides are inclined so as to be located on the upstream side in the flow direction a of the cooling water flowing through the water jacket 3 from the upper end to the lower end. Thus, the entire depth direction b is elastically deformed so as to face the upstream side of the flow direction a and elastically contacts the inner walls 3a and 3c evenly. That is, the elastic contact of the elastic lips 8, 8 with elastic deformation on the inner walls 3a, 3c is curved in a component force direction according to the inclination angle of the insertion force along the depth direction b. Therefore, it deform | transforms so that the whole may face the upstream of the distribution direction a (refer FIG. 3). When the water jacket spacer 6 is disposed at a predetermined depth position, the lower end portion 8a of the elastic body lip 8 bent in a U shape is in contact with or close to the inner wall 3b on the bottom side of the water jacket 3. Further, since the lower end portion 9a of the lip base portion 9 is formed in a U shape so as to extend from one side surface 7a of the spacer body 7 to the opposite side surface 7b, the inner wall 3a of the elastic lips 8, 8 is inserted into the water jacket 3. , 3c is concentrated in a portion extending to the opposite side surface 7b. This makes it less likely that both restriction members 10 and 10 are detached from the spacer body 7 or damaged when inserted into the water jacket 3.

Thus, when the water jacket spacer 6 of this example is inserted and cooling water is introduced into the water jacket 3 arranged at a predetermined position from the cooling water introduction port 4, the elastic bodies constituting the regulating members 10, 10 on both sides. The circulation of the cooling water is regulated by the lips 8 and 8. In particular, since the elastic lips 8 and 8 on both sides are elastically contacted with the inner walls 3a and 3c evenly in the depth direction b, the desired regulation function of the cooling water is accurately exhibited. Further, the water jacket spacer 6 is stably positioned at a predetermined position. And since both elastic body lips 8 and 8 are elastically contacted with the inner walls 3a and 3c in a shape curved toward the upstream side of the flow direction a of the cooling water, the flow pressure of the cooling water is elastic as described above. Even if it acts on the body lip 8, the tip end portions of the elastic lips 8, 8 on both sides are not separated from the inner walls 3a, 3c so that the cooling water regulating function is stably maintained. Moreover, in this example, since the regulation members 10 and 10 on both sides are inclined from the upper end portion to the lower end portion so as to be positioned on the cooling water flow direction a side, the cooling water is guided upward and cooling is performed. Necessary cooling of the inner wall 3a on the upper side of the cylinder bore 2 is performed more effectively, overcooling of the inner wall 3a on the lower side of the cylinder bore 2 is more accurately suppressed, and the entire inner wall 3a is brought into an appropriate cooling state.
Since other configurations are the same as those in the example shown in FIGS. 3 and 4, common portions are denoted by the same reference numerals, and descriptions of operations and effects thereof are omitted.

FIG. 9 is a view similar to FIG. 5 showing a third modification of the first embodiment. The water jacket spacer 6 of this example corresponds to the second modified example in which the notched portion 7d as shown in the above example does not exist in the lower end portion 7c of the spacer body 7. That is, the lower end portion 9 a of the lip base portion 9 in this example is formed in a U shape so as to extend to the opposite side surface 7 b along the lower end surface 7 c of the spacer body 7 together with the lower end portion 8 a of the elastic body lip 8. In this example, there is no locking action of the lower end portion 9a of the lip base portion 9 by the cutout portion 7d as in the above example, but the function of the regulating member 10 including the elastic lip 8 is demonstrated in the same manner as in the above example.
Since other configurations are the same as those in the above example, common portions are denoted by the same reference numerals, and descriptions of operations and effects thereof are omitted.

  10 (a), 10 (b), 10 (c) and 11 show a second embodiment of the water jacket spacer according to the present invention. In the water jacket spacer 6 of the present embodiment, the elastic lip 8 extends from the upper end portion toward the lower end portion along the depth direction b of the water jacket 3, and the lower end portion 8 a side is the cooling water that circulates in the water jacket 3. It inclines so that it may warp toward the upstream of the distribution direction a of design. Further, in the water jacket spacer 6 of the present embodiment, the regulating member 10 is attached to one side surface 7 a of the spacer body 7, and the lower end portion 9 a of the lip base 9 is a notch portion formed on the lower end surface 7 c of the spacer body 7. It is formed in an L shape so as to follow the cut surface of 7d. Furthermore, the protrusion width d3 from the spacer body 7 (one side surface 7a) of the elastic body lip 8 constituting the regulating member 10 attached to the one side surface 7a is from the one side surface 7a when it is disposed in the water jacket 3. The distance is greater than the distance d3o to the opposing inner wall 3a. The lower end portion 8a of the elastic body lip 8 is gradually warped downward so as to approach the one side surface 7a of the spacer body 7, but the protruding width d3 'from the one side surface 7a of the lowermost end portion is still larger than the distance d3o. Has been. The restricting member 10 of the present embodiment is also formed of an integrally molded body made of the same material rubber, and the elastic lip 8 and the lip base 9 are bonded to the spacer body 7 with an adhesive (not shown) or a synthetic resin. It is integrated by two-color molding of rubber. Further, the lip base 9 may be made of a hard rubber, a synthetic resin, a metal, or the like that is different from the rubber constituting the elastic lip 8 in addition to the rubber lip 8. It is desirable to form the regulating member 10 by two-color molding with the lip base 9 or insert molding.

  The water jacket spacer 6 of the present embodiment is also inserted into the water jacket 3 through the opening 30 at the upper end thereof, and is located downstream of the coolant flow direction a and in the vicinity of the coolant inlet 4. 3 (see FIG. 1). At this time, since the protruding widths d3 and d3 ′ of the elastic lip 8 are larger than the distance d3o to the opposing inner wall 3a, the elastic lip 8 is inserted into the water jacket 3 in the process of being inserted into the water jacket 3. The inner wall 3a of the jacket 3 is elastically contacted with deformation. Further, the lower end portion 8a side of the elastic body lip 8 is inclined so as to warp the upstream side in the design flow direction a of the cooling water flowing through the water jacket 3, so that the depth follows the inclination. It is elastically deformed so that the whole of the direction b faces the upstream side in the flow direction a and elastically contacts the inner wall 3a (see FIG. 3). Also in this case, the elastic contact with the elastic deformation of the distal end portion of the elastic lip 8 with respect to the inner wall 3a is formed into a shape curved in the component force direction due to the inclination of the insertion force along the depth direction b. Is deformed so as to face the upstream side in the flow direction a. When the water jacket spacer 6 is disposed at a predetermined depth position, the lower end portion 8a of the elastic lip 8 bent in an L shape and the lower end surface 7c of the spacer body 7 are connected to the inner wall 3b on the bottom side of the water jacket 3. In contact with or close to. Further, the opposite side surface 7b of the spacer body 7 is in a state of being close to or in contact with the inner wall 3c outside the water jacket 3 (on the side opposite to the cylinder bore 2). Further, since the lower end portion 9a of the lip base portion 9 is formed in an L shape so as to extend from one side surface 7a of the spacer body 7 to the opposite side surface 7b, the elastic body lip 8 is elastic against the inner wall 3a when inserted into the water jacket 3. The stress accompanying the contact is concentrated on the portion extending to the opposite side surface 7b. This makes it less likely that the restriction member 10 will be detached from the spacer body or damaged when inserted into the water jacket 3.

  Thus, when the water jacket spacer 6 of this embodiment is inserted and cooling water is introduced into the water jacket 3 arranged at a predetermined position from the cooling water inlet 4, the elastic lip 8 constituting the regulating member 10 is used. Distribution of cooling water is regulated. In particular, since the elastic body lip 8 is elastically contacted with the inner wall 3a evenly in the entire depth direction b, the desired regulation function of the cooling water is accurately exhibited. And since the elastic body lip 8 is elastically contacted with the inner wall 3a in a curved shape so that the concave curved portion faces the upstream side in the flow direction a of the cooling water, when the cooling water is introduced into the water jacket 3, The circulation pressure of the cooling water acts on the concave curved portion side of the elastic lip 8 that is elastically deformed so as to be bent from the upstream side in the flow direction a. Therefore, the tip end portion of the elastic lip 8 is elastically contacted with the inner wall 3a in a projecting manner. Thereby, even if the circulation pressure of the cooling water acts on the elastic body lip 8, the tip of the elastic body lip 8 is not squeezed and released from the inner wall 3a, and the cooling water regulating function is stable. Maintained. Also in the present embodiment, the entire inner wall 3a is brought into an appropriate cooling state by the regulating action of the cooling water flow by the regulating member 10. Furthermore, since the lower end portion 9a of the lip base portion 9 is locked in a state where the lower end portion 9a is fitted into the notch portion 7d of the spacer body 7, even if the circulating pressure of the cooling water acts on the lower end portion 8a of the elastic lip 8. , There is no concern about moving away from this part.

  FIGS. 12A, 12B, and 13 are views similar to FIGS. 10B, 10C, and 11 showing a first modification of the second embodiment. In the water jacket spacer 6 of this example, the regulating members 10 are attached to both sides of the one side surface 7 a and the opposite side surface 7 b of the spacer body 7, and the regulating members 10, 10 on both sides are the lip at the lower end portion of the spacer body 7. The base 9 is connected to each other by the lower end 9 a. The lower end portion 9a of the lip base portion 9 in this example is formed in a U shape so as to extend from one side surface 7a to the opposite side surface 7b along the notch surface of the notch portion 7d formed on the lower end surface 7c of the spacer body 7. The restricting member 10 attached to the opposite side surface 7 b of the spacer body 7 also has the elastic lip 8 extending from the upper end portion to the lower end portion along the depth direction b of the water jacket 3, and the lower end portion 8 a of the elastic lip 8. The side is inclined so as to warp toward the upstream side in the flow direction a of the cooling water. Further, in the same manner as described above, the protruding width d3 of the elastic body lip 8 constituting the regulating member 10 attached to the one side surface 7a from the spacer body 7 (one side surface 7a) and the one side surface 7a of the lowermost end portion of the lower end portion 8a. The projecting width d3 ′ is greater than the distance d3o from the one side surface 7a to the opposing inner wall 3a when disposed in the water jacket 3. On the other hand, the protruding width d4 of the elastic lip 8 constituting the regulating member 10 attached to the opposite side surface 7b from the spacer body 7 (opposite side surface 7b) and the protruding width d4 ′ from the opposite side surface 7b of the lowermost end portion of the lower end portion 8a. Is greater than the distance d4o from the opposite side surface 7b to the opposing inner wall 3c. In the illustrated example, the protruding widths d3 and d3 ′ from the one side surface 7a and the protruding widths d4 and d4 ′ from the opposite side surface 7b, the distance d3o from the one side surface 7a to the inner wall 3a, and the distance from the opposite side surface 7b to the inner wall 3c. The distances d4o are drawn equally, but they may be different from each other.

The water jacket spacer 6 of this example is also inserted into the water jacket 3 and arranged at a predetermined position in the same manner as in the above examples. At this time, the protruding widths d3 (d3 ′) and d4 (d4 ′) of the elastic lips 8 and 8 are set to be larger than the distances d3o and d4o to the opposing inner walls 3a and 3c. The elastic body lips 8, 8 on both sides are elastically brought into contact with the inner walls 3 a, 3 c of the water jacket 3 while being deformed. The elastic lips 8 and 8 on both sides are inclined so that the lower end portion 8a side is warped toward the upstream side in the flow direction a of the cooling water flowing through the water jacket 3, and the depth follows the inclination. The entire length direction b is elastically deformed so as to face the upstream side in the flow direction a and is elastically contacted with the inner walls 3a and 3b evenly. Also in this case, the elastic contact with elastic deformation with respect to 3a, 3c on the inner wall of the tip part of the elastic lips 8, 8 on both sides is curved in the component force direction due to the inclination of the insertion force along the depth direction b. Therefore, the whole is deformed so as to face the upstream side in the flow direction a. When the water jacket spacer 6 is disposed at a predetermined depth, the lower end 8a of the elastic lip 8 bent in a U-shape and the lower end surface 7c of the spacer body 7 are connected to the inner wall 3b on the bottom side of the water jacket 3. In contact with or close to. Further, since the lower end portion 9a of the lip base portion 9 is formed in a U shape so as to extend from one side surface 7a of the spacer body 7 to the opposite side surface 7b, the inner wall 3a of the elastic lips 8, 8 is inserted into the water jacket 3. , 3c is concentrated in a portion extending to the opposite side surface 7b. This makes it less likely that the restriction member 10 will be detached from the spacer body or damaged when inserted into the water jacket 3.
Other configurations are the same as those in the example shown in FIGS. 10 to 11, and thus, common portions are denoted by the same reference numerals, and descriptions of operations and effects thereof are omitted.

FIG. 14 is a view similar to FIG. 11 showing a second modification of the second embodiment. In the water jacket spacer 6 of this example, the regulating members 10 and 10 are attached to both sides of the one side surface 7a and the opposite side surface 7b of the spacer body 7 as in the example shown in FIGS. A cutout portion 7d formed in a through hole shape is formed on the lower end portion side of the spacer body 7 so as to penetrate the one side surface 7a and the opposite side surface 7b. The regulating members 10, 10 on both sides are connected to each other by the lower end portion 9a of the lip base 9 along the notch surface of the notch portion 7d at the lower end portion of the spacer body 7, and the lower end portion 9a is connected to one side surface 7a of the spacer body 7. It is formed in a U shape so as to cover the opposite side surface 7b. Further, the lower end portion 8a side of the elastic body lips 8, 8 constituting the regulating members 10, 10 on both sides is warped toward the upstream side in the flow direction a of the cooling water, similarly to the example shown in FIGS. So as to be inclined. The water jacket spacer 6 of this example is also inserted into the water jacket 3 and arranged at a predetermined position in the same manner as in the above examples. At this time, the inner wall 3b on the bottom side of the water jacket 3 is below the spacer main body 7. The end surface 7c is in contact with or close to the end surface, and the lower end portion 8a of the elastic lip 8 is positioned above the inner wall 3b. Therefore, the regulating members 10 and 10 have the same operations and effects as those in FIGS.
Other configurations are the same as those in the example shown in FIGS. 12 to 13, and thus, common portions are denoted by the same reference numerals, and description of the operations and effects thereof is omitted here.

FIGS. 15A, 15B, 15C, and 16 show a third modification of the second embodiment. In the water jacket spacer 6 of this example, the regulating members 10 and 10 are attached to both the one side surface 7a and the opposite side surface 7b of the spacer main body 7, but the concave groove 7e, 7e is formed. The lip bases 9 and 9 of the elastic lips 8 and 8 are formed so as to fit into the concave grooves 7e and 7e, respectively, and the lip base parts 9 and 9 are fitted into the concave grooves 7e and 7e in the same manner as described above. It is fixed integrally with an adhesive or the like. Thus, the regulating members 10 on both sides are attached to the one side surface 7 a and the opposite side surface 7 b of the spacer body 7. And the notch part 7d similar to the example shown in FIG.10 and FIG.11 is formed in the lower end part of the spacer main body 7. FIG. The regulating members 10, 10 on both sides are connected to each other by the lower end portion 9a of the lip base 9 along the notch surface of the notch portion 7d at the lower end portion of the spacer body 7, and the lower end portion 9a extends from one side surface 7a to the opposite side surface 7b. It is formed in a U shape so as to extend. Further, the lower end portion 8a side of the elastic body lips 8, 8 constituting the regulating members 10, 10 on both sides is warped toward the upstream side in the flow direction a of the cooling water, similarly to the example shown in FIGS. So as to be inclined. In this example, the restricting members 10, 10 are attached to the spacer body 7 by fitting the lip bases 9, 9 into the recessed grooves 7e, 7e and fixing them together, so that the spacer body 7 of the restricting members 10, 10 is fixed. The mounting state is more stabilized, and it is less likely that the restriction members 10 and 10 are detached from the spacer body 7 or damaged when inserted into the water jacket 3.
Other configurations are the same as those in the example shown in FIGS. 12 to 13, and thus, common portions are denoted by the same reference numerals, and description of the operations and effects thereof is omitted here.

17 (a), (b), (c) and FIG. 18 show a third embodiment. In the water jacket spacer 6 of this example, the restricting member 10 is attached to one side surface 7a of the spacer body 7 as in the example shown in FIGS. And the same ditch | groove 7e as the example of FIG. 16 is formed. The lip base portion 9 is formed so as to be fitted into the concave groove 7e as in the examples of FIGS. Furthermore, a plurality of (five in the illustrated example) through-holes 7f penetrating the opposite side surface 7b are provided at appropriate intervals from the upper end side to the lower end side of the spacer body 7 at the bottom of the concave groove 7e. Yes. The lower end portion 9a of the seal base portion 9 is formed in a rivet-like projection shape that engages with the lowermost through hole 7f by press-fitting and extends to the opposite side surface 7b. Ribbed projections 9b formed on the lip base 9 are engaged with the through holes 7f other than the lowermost through hole 7f by press fitting so as to extend to the opposite side surface 7b. In this example, the attachment of the regulating member 10 to the spacer main body 7 is performed by fitting the lip base portion 9 into the concave groove 7e and engaging the lower end portion 9a and the projection-shaped portion 9b with the press-fitting holes 7f. The fixing member 10 can be made stable without using a fixing means such as the like, and the concern that the regulating member 10 may be detached from the spacer body 7 or damaged when inserted into the water jacket 3 is less likely to occur.
Other configurations are the same as the examples shown in FIGS. 10 to 11 and FIGS. 15 to 16, and therefore, common portions are denoted by the same reference numerals, and description of the operations and effects thereof is omitted here.

  19 (a) and 19 (b) show a fourth embodiment of the water jacket spacer according to the present invention. The water jacket spacer 6 of the present embodiment is common to the water jacket spacer 6 of each of the embodiments described above in that the regulating member 10 includes an elastic lip 8 and a lip base portion 9. However, the lip base portion 9 is made of an annular elastic member, and the restriction member 10 is different in that it is attached to the spacer main body 7 through the lip base portion 9 by detachable elastic fitting. The elastic body lip 8 and the lip base portion 9 are made of a single molded body made of the same elastic rubber. In this embodiment, the elastic body lip 8 is formed over the entire circumference of the lip base portion 9 in the circumferential direction. The spacer body 7 is made of a synthetic resin plate-like molded body as in each of the above examples, and an annular groove 7g along the depth direction b is formed in the central portion orthogonal to the depth direction b. It is formed on both sides. The annular concave groove 7g has a shape into which the lip base 9 can be fitted, and the annular lip base 9 can be expanded with elastic deformation. As a result, the spacer body 7 can be inserted into the ring of the expanded lip base 9, and the regulating member 10 can be elastically fitted to the annular groove 7 g via the lip base 9 with restoring elasticity. . Further, the elastic lips 8, 8 on both surfaces of the lip base 9 are formed to be inclined with respect to the circumferential direction of the lip base 9. This inclination is formed so that when the water jacket spacer 6 is inserted into the water jacket 3 (see FIG. 1 and the like), the water jacket spacer 6 is located upstream from the upper end to the lower end in the flow direction a in the design of the cooling water. Has been. The protruding widths of the elastic lips 8 and 8 positioned on both sides of the spacer body 7 from the spacer body 7 are also set in the same manner as in the above examples, although not shown.

  FIG. 19A shows the water jacket spacer 6 configured by attaching the regulating member 10 to the spacer body 7 by elastic fitting as described above. The water jacket spacer 6 of the present embodiment is also inserted into a predetermined position in the water jacket 3 as shown in FIG. At this time, the elastic lips 8 and 8 on both surfaces of the spacer body 7 are elastically deformed in a curved shape and elastically contact with both inner walls 3a and 3c of the water jacket 3 (see FIG. 3 and the like). . Further, the lower end portion 9a of the lip base portion 9 has a U-shape extending between both side surfaces 7a and 7b (see FIG. 3 and the like) of the spacer body 7 along the lower end surface 7c of the spacer body 7. 9a also has the same function as described above. Further, the lower end portion 8a of the elastic body lip 8 integrated with the lower end portion 9a of the lip base portion 9a is in contact with or close to the bottom side inner wall 3b (see FIG. 4A, etc.) of the water jacket 3. In the water jacket spacer 6 of this embodiment, the regulating member 10 can be detachably and elastically fitted to the spacer body 7. As a result, in the case where the tip of the elastic lip 8 has a problem due to wear or the like, it can be easily replaced. Furthermore, if various types of regulating members 10 having different specifications are prepared, they can be appropriately selected and replaced with those suitable for the required cooling water flow regulating function. Since the other configuration is the same as the example shown in FIGS. 7 to 9, the same reference numerals are given to the common parts, and the description of the operation and effect is omitted.

FIG. 20 shows a fifth embodiment of the water jacket spacer according to the present invention. The water jacket spacer 6 of this embodiment is common to the examples shown in FIGS. 7 to 9 or FIGS. 12 to 16 in that the regulating members 10 and 10 are attached to both sides of the spacer body 7. Both restriction members 10 and 10 are different in that they are shifted from each other in the vicinity of the circumferential direction of the water jacket 3. Therefore, the lower end portion 9 a of the lip base portion 9 that connects both the regulating members 10, 10 has a U shape that obliquely crosses the thickness direction of the spacer body 7. In this case, the lower end portion 9 a is also formed along the cutout portion 7 d formed in the spacer body 7 and the lower end surface 7 c of the spacer body 7. In this way, by allowing the regulating members 10 and 10 on both sides of the spacer body 7 to be displaced from each other in the circumferential direction, the regulating member 10 can be selected according to the shape of the inner walls 3a, 3b, and 3c of the water jacket 3. , 10 can be set as appropriate so as not to interfere with these shapes and the like. In addition, since the regulating members 10 on both sides are close to each other in the circumferential direction, the stress at the time of insertion into the water jacket 3 becomes equal on both sides at the lower end portion 9a of the lip base 9, and the regulating members 10, 10 There is less concern that 10 may be detached from the spacer body 7 or damaged.
Since the other configuration is the same as the example shown in FIGS. 7 to 9, the same reference numerals are given to the common parts, and the description of the operation and effect is omitted here.

  FIG. 21 shows another example of application of the water jacket spacer according to the present invention. In the water jacket spacer 6 of this example, in the water jacket spacer 6 of the first embodiment, another regulating member 100 is attached on the downstream side in the flow direction a of the regulating member 10 attached to one side surface 7a of the spacer body 7. It is characterized in that it is In the automobile engine, the design flow direction of the cooling water flowing through the water jacket 3 is set as a. However, when the engine is operated and the temperature in the cylinder bore 2 fluctuates, the flow direction of the cooling water flowing through the water jacket 3 sometimes fluctuates due to the drive control of the water pump that circulates and drives the cooling water to and from the radiator. However, the cooling water may flow in the flow direction a ′ opposite to the design flow direction a. In this application example, another restricting member (hereinafter referred to as a second restricting member) 100 is used as the restricting member 10 in order to give the same function as the restricting member 10 to the cooling water flowing in the flowing direction a ′. Are attached to one side surface 7a of the spacer body 7 symmetrically. The second restricting member 100 includes a second elastic lip 80 and a second lip base 90 (lower end 90a) that are symmetrical to the elastic lip 8 and the lip base 9 (lower end 9a) constituting the restricting member 10, respectively. Composed. The protruding width d1 ′ of the second elastic lip 80 from the one side surface 7a of the spacer body 7 is the same as the protruding width of the elastic lip 8. Thereby, the 2nd control member 100 has the same function as control member 10 with respect to the cooling water which distribute | circulates in distribution direction a '. Since other configurations are the same as those of the first embodiment, common portions are denoted by the same reference numerals, and descriptions of operations and effects thereof are omitted. Note that this application example is also applicable to the second to fifth embodiments.

  22 (a) and 22 (b) show still another example of application of the water jacket spacer according to the present invention. The water jacket spacer 6 in these examples is installed in a constricted portion 3d between adjacent cylinder bores 20 and 20 in the water jacket 3 shown in FIGS. The planar shape of the spacer main body 7 in the illustrated water jacket spacer 6 is curved so as to follow the shape of the constricted portion 3d. In the examples of (a) and (b), each includes a plate-like extending portion 70 formed so as to protrude from the central portion of the spacer body 7 toward the innermost wall of the inner wall 3a in the constricted portion 3d. ing. The extending portion 70 is a part of the spacer body, and is a synthetic resin or rubber molded body integrated with the spacer body 7, or a metal plate integrated with the spacer body 7 by means such as adhesive or insert molding. It may be. In the illustrated example, the extending portion 70 is a synthetic resin molded body integrated with the spacer body 7.

  In the example of FIG. 22A, the restricting member 10 includes an elastic lip 8 and a lip base portion 9, and one side surface 70 a of the extension portion 70 of the spacer body 7 via the lip base portion 9 (in terms of cooling water design) Is attached to the surface facing the flow direction a). The elastic lip 8 is formed of a rubber molded body, and is integrated with one side surface 70a of the extending portion 70 via the lip base portion 9 so as to extend along the depth direction b (see FIG. 4A, etc.) of the water jacket 3. Is formed. The elastic lip 8 is inclined from the upper end portion to the lower end portion so as to be located on the upstream side in the flow direction a of the cooling water. Further, the lower end portion (not shown) of the lip base portion 9 is formed in an L shape so as to extend from one side surface 70a of the extending portion 70 to the opposite side surface 70b. Also in this example, the protruding width d5 of the elastic lip 8 from the spacer body 7 is larger than the distance d5o from the spacer body 7 to the inner wall 3a. Therefore, the same effect as the first embodiment can be obtained.

In the example of FIG. 22B, in addition to the example of FIG. 22A, another elastic lip 80 is integrally formed on the opposite side surface (the surface on which the elastic lip 8 is not formed) 70b of the extending portion 70. The elastic body lip 80 and the lip base 90 constitute another restricting member 100. The elastic lip 80 in the restricting member 100 is also formed of a rubber molded body, and is inclined from the upper end portion to the lower end portion so as to be located on the upstream side in the same flow direction a ′ as shown in the example of FIG. Also in this example, the protruding width d5 ′ of the elastic lip 80 from the spacer body 7 is larger than the distance d5o from the spacer body 7 to the inner wall 3a. Further, the lower end portion (not shown) of the lip base portion 9 is formed in a U shape so as to extend from one side surface 70a of the extending portion 70 to the opposite side surface 70b. Therefore, in addition to the action and effect of the regulating member 10, as described in the example of FIG. 21, the cooling water is also adapted to the fluctuation in the flow direction of the cooling water in the water jacket 3 due to the temperature change of the cylinder bore 2 or the like. The regulation function is properly demonstrated.
In the example shown in FIGS. 22 (a) and 22 (b), the elastic lips 8 and 80 extend along the depth direction b of the water jacket 3 extending from the upper end portion to the lower end portion, and the lower end portions of the elastic lips 8 and 80 are located at the lower end side. It may be inclined so as to bend toward the upstream side of the flow direction a, a ′ of the cooling water flowing through the jacket 3.

Note that the internal combustion engine to which the spacer of the present invention is applied is exemplified by an engine for a three-cylinder automobile. However, the present invention is also applicable to an engine for an automobile having a different number of cylinders or an internal combustion engine other than an automobile. Needless to say. Furthermore, the installation position of the cooling water inlet 4 in the cylinder block 1 is not limited to the example of FIGS. 1 and 2, and as long as the design coolant flow direction a is appropriately set, the circumference of the water jacket 3 is not limited. Any position in the direction may be used. The shapes of the illustrated elastic lip 8 (80), lip base 9 (90), etc. are conceptually shown, and needless to say, they are different from the actual shapes.
Further, for example, the lower end portion 9a of the lip base 9 is opposite to the spacer body 7 with respect to the regulating member 10 partially provided at the intermediate portion or the lower portion of the spacer body 7 according to the purpose of regulating the flow of the cooling water. The effects described above can be obtained in the same manner.

DESCRIPTION OF SYMBOLS 1 Cylinder block 3 Water jacket 3a, 3b, 3c Inner wall 6,6A Water jacket spacer 7 Spacer main body 7a One side surface 7b Opposite side surface 7c Lower end surface 7d Notch portion 7f Through hole 8 Elastic body lip 8a Lower end part of elastic body lip 9 Lip base 9a Lower end of lip base 10 Restriction member a Designed flow direction of cooling water b Depth direction d1 to d5 Projection width of elastic body lip from spacer body d1o to d5o Distance between spacer body and inner wall

Claims (9)

A water jacket spacer that is inserted into the water jacket of the cylinder block and adjusts the flow of cooling water in the water jacket,
A spacer body and a regulating member having an elastic lip projecting from the spacer body toward the inner wall of the water jacket,
The restricting member includes a lip base for attaching the elastic lip to the spacer body, and at least a lower end portion of the lip base along the depth direction of the water jacket is a spacer on the side where the restricting member is attached. Formed to extend from the surface of the body to the opposite side,
The elastic body lip has a protruding width from the spacer body larger than the distance from the spacer body to the inner wall, and at least the lower end side is inclined with respect to the depth direction of the water jacket. A featured water jacket spacer. The water jacket spacer according to claim 1,
The water jacket spacer characterized in that the elastic lip is inclined from the upper end portion to the lower end portion so as to be positioned on the upstream side in the flow direction in the design of the cooling water flowing through the water jacket. The water jacket spacer according to claim 1,
The elastic lip extends from the upper end portion to the lower end portion along the depth direction of the water jacket, and the lower end portion warps toward the upstream side in the design flow direction of the cooling water flowing through the water jacket. Water jacket spacer characterized by being inclined. In the water jacket spacer according to any one of claims 1 to 3,
The restricting member is attached to one side surface of the spacer body, and a lower end portion of the lip base is formed in an L shape so as to follow a lower end surface of the spacer body or a notch surface of a notch portion formed in the spacer body. Water jacket spacer, characterized by In the water jacket spacer according to any one of claims 1 to 3,
The restricting member is attached to one side surface of the spacer body, and a lower end portion of the lip base is along a lower end surface of the spacer body or a notch surface of a notch portion formed in the spacer body, and further opposite to the spacer body. A water jacket spacer, characterized in that it is formed in a U-shape so as to extend to the side. In the water jacket spacer according to any one of claims 1 to 3,
The restriction member is attached to one side surface of the spacer body, and a lower end portion of the lip base is formed in a protruding shape that engages with a through hole formed in the spacer body. Spacer. In the water jacket spacer according to any one of claims 1 to 3,
The water jacket spacer, wherein the restriction member is attached to both side surfaces of the spacer body, and a lower end portion of the lip base portion connects the restriction members on both side surfaces. The water jacket spacer according to claim 7,
The water jacket spacer according to claim 1, wherein the regulating members on both side surfaces of the spacer main body are positioned in the vicinity of the spacer main body along the circumferential direction of the water jacket. In the water jacket spacer according to any one of claims 1 to 8,
The water jacket spacer according to claim 1, wherein the lip base is made of an annular elastic member, and the restricting member is attached to the spacer main body through the lip base by detachable elastic fitting.

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