JP5018742B2 - Sealing material deterioration test equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for testing deterioration of a sealing material for precisely confirming a deterioration state of the sealing material caused by a dynamic behavior of a joint part, having a simple structure and excellent in handleability. <P>SOLUTION: In the device for testing the deterioration of the sealing material, one of joint constituting members 2A and 2B placed opposite is energized in an approaching and separating direction with respect to the other one of them using usual spring materials 4 and 4 and shape memory spring materials 5 and 5. When the shape memory springs 5 and 5 are set to temperature lower than predetermined temperature, one of the joint constituting members 2A and 2B is moved in the direction of separating from the other one of them by the energizing force of the normal spring materials 4 and 4 to stretch the sealing material S and, when the shape memory spring materials 5 and 5 reach a predetermined temperature or above to restore a shape, one of them is moved in the direction of approaching the other one of them by the energizing force of the shape memory spring materials 5 and 5 to compress the sealing material S. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  This invention relates to the deterioration of the sealing material filled in the joints between the wall materials and between the various members, particularly the deterioration of the sealing material due to the dynamic behavior of the joints due to thermal expansion and contraction and vibration of the wall materials and various members. The present invention relates to a test apparatus for confirming the situation.

  In general, the sealing material used for filling the joints between the wall materials not only deteriorates due to the effects of the external environment such as solar radiation and rainfall, but also due to the dynamic behavior of the joints due to thermal expansion and contraction of the wall materials and vibrations. Therefore, it is also deteriorated by repeatedly receiving compressive force, tensile force and shearing force. For this reason, various test apparatuses for confirming the deterioration state of the sealing material due to the dynamic behavior have been proposed and used for performance evaluation of the sealing material.

  As a test device of this type, for example, as shown in FIG. 14, a black acrylic resin strip 61 is fixed on a white steel base material 60 with one end fixed, and temperature changes due to outdoor exposure are utilized. Then, the acrylic resin strip 61 is repeatedly thermally expanded and contracted, and a compressive force and a tensile force are repeatedly applied to the sealing material 62 attached to the movable other end of the acrylic resin strip 61. A structure in which the deterioration state of the sealing material 62 due to dynamic behavior is confirmed is known.

  In the above test apparatus, since the dynamic behavior is reproduced by the thermal expansion and contraction of the acrylic resin strip 61, the amount of behavior is determined according to the length of the acrylic strip 61. In this case, in order to reproduce the dynamic behavior of the joint between the general wall materials, it is necessary to use a long strip of, for example, about 300 mm as the strip material 61 made of acrylic resin. However, there was a problem that it was large and difficult to handle. In addition, when the acrylic resin strip 61 is repeatedly thermally expanded and contracted using temperature changes due to outdoor exposure, the test results are likely to vary due to differences in environmental conditions such as weather and climate, and high reliability. There was also a problem that it took a long time to obtain test results.

  Therefore, for example, as disclosed in Patent Literature 1 and Patent Literature 2, indoors such as a laboratory that is not affected by environmental conditions, the deterioration of the sealing material due to the dynamic behavior of the joints can be accurately detected in a short time. Test apparatuses that can be confirmed have been proposed.

  The test apparatus includes a pair of joint components arranged opposite to each other to form a joint for filling and mounting a sealing material to be tested. By reproducing and repeatedly applying compressive force and tensile force to the sealing material, the deterioration state of the sealing material due to dynamic behavior is confirmed.

Japanese Patent Application Laid-Open No. 7-190921 JP 2005-37272 A

  However, in the test apparatuses disclosed in Patent Literature 1 and Patent Literature 2, when reproducing the dynamic behavior by relatively approaching and separating the joint constituent members, the joint constituent members are driven using a drive motor or the like as a power source. Since the structure is reciprocated, there is a problem that the structure is complicated, the entire apparatus is still enlarged, and the manufacturing cost is high.

  The present invention eliminates the above-mentioned problems, can accurately check the deterioration of the sealing material due to the dynamic behavior of the joints in a short time, and has a simple structure and excellent handling properties. The purpose is to provide a deterioration test apparatus.

  In order to solve the above-mentioned problems, a deterioration test apparatus according to the present invention includes a pair of joint-constituting members 2A and 2B arranged opposite to each other to constitute a joint part for filling and mounting the sealing material S to be tested, and these joint-constituting members. 2A and 2B, and a guide member 3 that guides at least one joint constituent member 2A so as to be movable toward and away from the other joint constituent member 2B, and the at least one joint constituent member 2A on the other side The normal spring members 4 and 4 for constantly urging in the direction away from the joint constituent member 2B and the at least one joint constituent member 2A in the direction approaching the other joint constituent member 2B If the shape memory spring members 5 and 5 are at a temperature lower than a predetermined temperature, the biasing force of the normal spring members 4 and 4 is the shape memory spring. By exceeding the urging force of the materials 5 and 5, the at least one joint constituent member 2A moves away from the other joint constituent member 2B to extend the sealing material S, and the shape memory spring When the members 5 and 5 are recovered in shape at a predetermined temperature or more, the biasing force of the normal spring members 4 and 4 is less than the biasing force of the shape memory spring members 5 and 5, so that the at least one joint configuration The member 2A moves in a direction approaching the other joint constituting member 2B to compress the sealing material S.

  Further, the at least one joint constituent member 2A is always urged in the direction approaching the other joint constituent member 2B by the normal spring members 4 and 4, and the at least one joint is formed by the shape memory spring members 5 and 5. When the shape memory spring members 5 and 5 are at a temperature lower than a predetermined temperature, the normal spring member 4A is biased in a direction away from the other joint member 2B. When the urging force of 4 exceeds the urging force of the shape memory spring materials 5 and 5, the at least one joint constituent member 2A moves in a direction approaching the other joint constituent member 2B and the sealing material When S is compressed and the shape memory spring materials 5 and 5 are recovered in shape when the temperature is higher than a predetermined temperature, the urging force of the normal spring materials 4 and 4 becomes the urging force of the shape memory spring materials 5 and 5. Below , Wherein at least one of the joint structure components 2A may also be moved in a direction away from the other of the joint component 2B extending the sealing material S.

  And in the above, the movement amount adjustment member 6 which adjusts the movement amount of the at least one joint component member 2A in the direction approaching and separating from the other joint component member 2B is provided.

  Another deterioration test apparatus according to another invention supports a pair of joint constituent members 30A and 30B arranged opposite to each other to form a joint for filling and mounting the sealing material S to be tested, and these joint constituent members 30A and 30B. In addition, the guide member 31 that guides at least one joint constituent member 30A so as to be movable in two opposite directions causing a lateral shift with respect to the other joint constituent member 30B, and the at least one joint constituent member 30A on the other side The normal spring members 32 and 32 for constantly energizing the joint constituent member 30B in one direction causing a lateral deviation, and the at least one joint constituent member 30A with respect to the other joint constituent member 30B are laterally displaced. Shape memory spring materials 33 and 33 for urging in the other direction opposite to the one direction to be generated, and the shape memory spring materials 33 and 33 are predetermined. The biasing force of the normal spring members 32, 32 exceeds the biasing force of the shape memory spring members 33, 33 when the temperature is lower than that, so that the at least one joint constituting member 30A becomes the other joint constituting member. When the shape memory spring members 33 and 33 are restored to their shape when the shape memory spring members 33 and 33 are at a predetermined temperature or more, they are moved in one direction to cause a lateral displacement with respect to 30B to apply a shearing force to the sealing material S. When the biasing force of the spring members 32, 32 is lower than the biasing force of the shape memory spring members 33, 33, the at least one joint component member 30A causes a lateral shift with respect to the other joint component member 30B. It moves to the other direction contrary to a direction, and applies the shear force of the direction different from the said shear force to the said sealing material S, It is characterized by the above-mentioned.

  And in the above, the movement amount adjustment member 34 which adjusts the movement amount to the opposite two directions which produce a lateral shift with respect to the other joint component member 30B in the said at least one joint component member 30A is provided.

  In the deterioration test apparatus of the present invention, the shape behavior of the shape memory spring material accompanying the temperature change is used to reproduce the dynamic behavior of the joint, so it is installed in an accelerated weathering test machine such as a laboratory or a sunshine weather meter. Then, by repeatedly changing the temperature of the shape memory spring material, it is possible to accurately confirm the deterioration state of the sealing material due to the dynamic behavior of the joint portion in a short time. In addition, compared to the conventional case of using a long acrylic resin strip or reproducing the dynamic behavior of the joint using a drive motor as a power source, the structure is simplified and the entire device is downsized. It is possible to improve the handleability.

  Further, by appropriately adjusting the amount of movement of the joint constituent member by the movement amount adjusting member, the dynamic behavior of various joint portions can be widely reproduced, and the functionality can be improved.

(First embodiment)
The sealing material deterioration test apparatus according to the first embodiment of the present invention, as shown in FIG. 1, supports a pair of joint-constituting members 2A, 2B arranged opposite to each other, and these joint-constituting members 2A, 2B, A guide member 3 that guides one joint constituent member 2A so as to move freely in a direction to approach and separate from the other joint constituent member 2B, and a direction to separate one joint constituent member 2A from the other joint constituent member 2B. A pair of normal spring members 4, 4 for constantly urging the two joints, and a pair of shape memory spring members 5 for urging one joint constituent member 2 </ b> A in a direction approaching the other joint constituent member 2 </ b> B, 5 and a movement amount adjustment member 6 that adjusts the movement amount of the one joint constituent member 2A in the direction of approaching and separating from the other joint constituent member 2B. The joint constituent members 2A and 2B, the guide member 3, the normal spring materials 4 and 4, the shape memory spring materials 5 and 5, and the movement amount adjusting member 6 are integrally assembled on the single substrate 7, and the whole As a unit. The substrate 7 is formed in a rectangular shape having a long side length of about 150 mm and a short side length of about 70 mm.

  The joint constituent members 2A and 2B are made of, for example, an aluminum plate, and a joint portion for filling and mounting the sealing material S having viscoelasticity to be tested is formed between the joint constituent members 2A and 2B.

  The guide member 3 is disposed in parallel with the fixed frame members 10 and 10 between the pair of fixed frame members 10 and 10, and the pair of fixed frame members 10 and 10 fixed along both longitudinal ends of the substrate 7. Outside the movable frame member 11 and the joint components 2A, 2B, along the short direction of the substrate 7 (the direction perpendicular to the frame members 10, 10, 11) while penetrating the frame members 10, 10, 11 And a pair of guide shafts 12, 12.

  A pair of holding members 13 and 13 are fixed to the one fixed frame member 10 and the movable frame member 11 at intervals, and the holding members 13 and 13 of the one fixed frame member 10 and the movable frame member 11 are fixed. The holding members 13 are disposed so as to face each other. Then, one joint component 2A is detachably attached across the inward grooves 14 and 14 of the holding members 13 and 13 in the movable frame member 11, and the inside of the holding members 13 and 13 in the one fixed frame member 10 The other joint constituent member 2B is detachably attached across the orientation grooves 14 and 14.

  The guide shafts 12, 12 are made of bolts having screw portions only at the tip portions, and in the state where their heads are in contact with the outside of one fixed frame member 10, one fixed frame member 10, movable frame member 11. The nuts 15 and 15 are screwed and tightened to thread portions protruding through the other fixed frame member 10 and projecting to the outside of the other fixed frame member 10, thereby straddling between the frame members 10, 10 and 11. In this way, each is attached. The movable frame member 11 is slidably supported along the guide shafts 12, 12, whereby one joint constituting member 2 A attached to the holding members 13, 13 of the movable frame member 11 is replaced with one fixed frame member. The other holding joint members 2B attached to the ten holding members 13 and 13 are guided so as to be movable in the direction of approaching and separating.

  The normal spring members 4 and 4 are made of metal or synthetic resin compression coil springs, and the shape memory spring members 5 and 5 recover their shape to a predetermined memory shape when the temperature is higher than a predetermined temperature (transformation point). It consists of a compression coil spring made of shape memory alloy or shape memory resin. One normal spring member 4 is interposed between one fixed frame member 10 and the movable frame member 11 in a state where one guide shaft 12 is inserted, and the other normal spring member 4 is connected to the other normal spring member 4. The guide shaft 12 is inserted between the fixed frame member 10 and the movable frame member 11. In addition, one shape memory spring material 5 is interposed between the other fixed frame material 10 and the movable frame material 11 in a state where one guide shaft 12 is inserted, and the other shape memory spring material 5 is In the state where the other guide shaft 12 is inserted, the other guide frame 12 is interposed between the other fixed frame member 10 and the movable frame member 11.

  The moving amount adjusting member 6 is a pair of adjusting bolts arranged in parallel with the guide shafts 12 and 12 while passing through the frame members 10, 10 and 11 between the guide shafts 12 and 12 and the holding members 13. 20 and 20 and a plurality of adjustment nuts 21... Screwed into these adjustment bolts 20 and 20. The adjustment bolts 20, 20 are formed with screw portions over substantially the entire length thereof, and in a state where their heads are in contact with the outside of the one fixed frame member 10, the one fixed frame member 10, the movable frame The nut 11, 22 is screwed and tightened to the thread portion protruding through the member 11 and the other fixed frame member 10 and projecting to the outside of the other fixed frame member 10. Each is attached so as to straddle. A pair of adjustment nuts 21, 21 are screwed to the adjustment bolts 20, 20 so as to sandwich the movable frame member 11, and the movable frame member 11 that slides along the guide shafts 12, 12 is provided. By abutting against the adjusting nuts 21..., The movement of one joint constituting member 2 </ b> A is restricted. Accordingly, by appropriately changing the screwing positions of the adjusting nuts 21 and 21 in each adjusting bolt 20, that is, the interval between the adjusting nuts 21 and 21, the other joint constituent member 2B in one joint constituent member 2A is changed. Thus, the amount of movement in the direction of approaching and separating can be adjusted.

  Next, a method for confirming the deterioration state of the sealing material S caused by the dynamic behavior of the joint using the test apparatus having the above configuration will be described. First, the sealing material S is filled and attached to the joint between the joint constituent members 2A and 2B. In this filling and mounting, the joint components 2A and 2B are removed, and the assembled product (with the sealing material S interposed between the joint components 2A and 2B) is used as one joint configuration. The other joint constituent member 2B is attached so as to straddle the holding members 13, 13 of one fixed frame member 10 so that the member 2A straddles the holding members 13, 13 of the movable frame member 11.

  This test apparatus is installed in a laboratory where the temperature can be adjusted or in an accelerated weathering tester such as a sunshine weather meter. If installed in the accelerated weathering tester, it is possible to check the deterioration status taking into account the external environment such as solar radiation and rainfall.

  Then, the temperature of the shape memory spring materials 5 and 5 is repeatedly changed to a normal temperature lower than a predetermined temperature (transformation point) and a predetermined temperature (transformation point) or higher. Specifically, the shape memory spring materials 5 and 5 are heated every predetermined time. When the shape memory spring materials 5 and 5 are at a room temperature lower than a predetermined temperature (transformation point), the urging force of the normal spring materials 4 and 4 exceeds the urging force of the shape memory spring materials 5 and 5, so that FIG. As shown in FIG. 3, the movable frame member 11 is pushed rightward in the drawing and slides along the guide shafts 12 and 12 until it contacts the adjustment nuts 21 and 21. As a result, one joint constituent member 2A moves in a direction away from the other joint constituent member 2B, and the sealing material S extends. When the shape memory spring materials 5 and 5 are recovered in shape when the temperature is higher than a predetermined temperature (transformation point), the biasing force of the normal spring materials 4 and 4 is less than the biasing force of the shape memory spring materials 5 and 5, and FIG. As shown in (b), the movable frame member 11 is pushed in the left direction of the drawing and slides along the guide shafts 12 and 12 until it comes into contact with the adjustment nuts 21 and 21. Thereby, one joint component 2A moves in the direction approaching the other joint component 2B, and the sealing material S is compressed. Thus, by moving the joint constituent members 2A and 2B in the direction of approaching and separating, and repeatedly applying a tensile force and a compressive force to the sealing material S, the sealing material S caused by the dynamic behavior of the joint portion is obtained. The deterioration status can be confirmed accurately in a short time.

  In the above embodiment, one joint component 2A is always urged away from the other joint component 2B by the normal spring members 4 and 4, and one of the shape memory spring members 5 and 5 is used to urge one joint component member 2A. By energizing the joint constituent member 2A in the direction approaching the other joint constituent member 2B, the sealing material S is extended when the shape memory spring members 5 and 5 are at a normal temperature lower than a predetermined temperature (transformation point). When the shape memory spring materials 5 and 5 are restored to their shape when the temperature becomes higher than a predetermined temperature (transformation point), the sealing material S is compressed. However, as shown in FIG. The memory spring members 5 and 5 are interchanged, and the normal spring members 4 and 4 constantly bias one joint constituent member 2A in the direction of approaching the other joint constituent member 2B, thereby the shape memory spring member 5. 5, one joint component 2 Is urged in a direction away from the other joint constituent member 2B to compress the sealing material S when the shape memory spring materials 5, 5 are at a room temperature lower than a predetermined temperature (transformation point). You may comprise so that the sealing material S may be expand | extended when the spring materials 5 and 5 become more than predetermined temperature (transformation point) and shape recovery is carried out.

  In the above embodiment, the normal spring members 4 and 4 and the shape memory spring members 5 and 5 are both compression coil springs, but both may be tension coil springs. In this case, the shape memory spring materials 5 and 5 are extended when the room temperature is lower than a predetermined temperature (transformation point), and are contracted when the shape is restored to a predetermined temperature (transformation point) or higher.

  Furthermore, in the above-described embodiment, one joint component member 2A moves in a direction approaching and separating from the other joint component member 2B. For example, as shown in FIG. 4, a pair of movable frames The members 11 and 11 may be provided, and both joint members 2A and 2B may be moved in the direction of approaching and separating from each other.

Furthermore, as a reference example, as shown in FIGS. 5 and 7 , for example, the elastic springs 4 and 4 are abolished by using the elastic restoring force of the sealing material S, and one joint component 2A is replaced with the other. Only the shape memory spring members 5 and 5 for urging the joint constituent member 2B in the direction approaching or separating from the joint component member 2B are used, so that the structure can be further simplified . In this case, the shape memory spring materials 5 and 5 are at a predetermined temperature (transformation point) or higher than the biasing force when the shape memory spring materials 5 and 5 are at a room temperature lower than the predetermined temperature (transformation point), and the shape is restored. As shown in FIG. 6, the amount of movement of the one joint constituent member 2A in the direction of approaching the other joint constituent member 2B and the amount of compression of the sealing material S associated therewith are as shown in FIG. Is different depending on the temperature change of the shape memory spring materials 5 and 5, and a compressive force is repeatedly applied to the sealing material S, or the other joint constituting member 2B in one joint constituting member 2A as shown in FIG. The tensile force is repeatedly applied to the sealing material S by varying the amount of movement in the direction away from the sealing material and the amount of expansion of the sealing material S depending on the temperature change of the shape memory spring materials 5 and 5. In You have me.

(Second Embodiment)
The sealing material deterioration test apparatus according to the second embodiment of the present invention, as shown in FIG. 9, supports a pair of joint-constituting members 30A, 30B arranged opposite to each other, and these joint-constituting members 30A, 30B, A guide member 31 that guides the joint constituent members 30A and 30B to move in two opposite directions that cause a lateral shift with respect to the counterpart, and a lateral offset with respect to the counterpart constituents 30A and 30B. The normal spring members 32, 32 for constantly urging in one direction to be urged, and for urging the joint constituent members 30A, 30B in the other direction opposite to the one direction causing lateral displacement with respect to the other side The shape memory spring members 33 and 33 and the movement amount adjusting member 3 that adjusts the movement amounts in the two opposite directions that cause a lateral shift with respect to the mating side of the joint constituent members 30A and 30B. It is equipped with a door. The joint constituent members 30A and 30B, the guide member 31, the normal spring members 32 and 32, the shape memory spring members 33 and 33, and the movement amount adjusting member 34 are integrally assembled on the single substrate 35, so that As a unit. The substrate 35 is formed in a rectangular shape having a long side length of about 150 mm and a short side length of about 70 mm.

  The joint constituent members 30A and 30B are made of, for example, an aluminum plate material, and a joint portion for filling and mounting the sealing material S having viscoelasticity to be tested is formed between the joint constituent members 30A and 30B. Locking protrusions 36 and 36 that protrude in a direction away from each other are formed at the center of the outer surface of the joint constituent members 30A and 30B.

  The guide member 31 is disposed in parallel with the fixed frame members 40, 40 between the pair of fixed frame members 40, 40, and a pair of fixed frame members 40, 40 fixed along both longitudinal ends of the substrate 7. On the outside of the pair of movable frame members 41 and 41 and the joint component members 30A and 30B, the short side direction of the substrate 35 (perpendicular to the frame members 40, 41,. A pair of guide shafts 42, 42 arranged along the direction).

  A pair of guide pieces 43, 43 for sliding one end portions of the joint constituent members 30 </ b> A, 30 </ b> B are fixed to the one fixed frame member 40 at an interval, and the other fixed frame member 40 has a joint configuration. A pair of guide pieces 43, 43 for sliding the other end portions of the members 30A, 30B are fixed with a gap therebetween. Further, holding members 44, 44 are fixed to one end portions of the movable frame members 41, 41 so as to face each other. In the inward grooves 45, 45 of these holding members 44, 44, the joint constituting member 30A, The locking protrusions 36 and 36 of 30B are detachably fitted respectively.

  The guide shafts 42 and 42 are made of bolts having screw portions only at the tip portions. One guide shaft 42 penetrates one fixed frame member 40, one movable frame member 41, and the other fixed frame member 40 with its head in contact with the outside of one fixed frame member 40. Then, the nut 46 is screwed and tightened to the screw portion protruding to the outside of the other fixed frame member 40, so that the frame member 40, 40, 41 is mounted. The other guide shaft 42 passes through one fixed frame member 40, the other movable frame member 41, and the other fixed frame member 40 with its head in contact with the outside of the one fixed frame member 40. Then, the nut 46 is screwed and tightened to the screw portion protruding to the outside of the other fixed frame member 10, and is attached so as to straddle between the frame members 40, 40 and 41. The movable frame members 41, 41 are slidably supported along the guide shafts 42, 42, whereby one joint constituting member 30A attached to the holding member 44 of one movable frame member 41 and the other movable member. The other joint constituent member 30B attached to the holding member 44 of the frame member 41 is guided so as to be movable in two opposite directions that cause a lateral shift while guiding both ends thereof by the guide pieces 43. It has become.

  Usually, the spring members 32 and 32 are made of a compression coil spring made of metal or synthetic resin, and the shape memory spring members 33 and 33 recover their shape to a predetermined memory shape when the temperature is higher than a predetermined temperature (transformation point). It consists of a compression coil spring made of shape memory alloy or shape memory resin. One normal spring member 32 is interposed between one fixed frame member 40 and one movable frame member 41 in a state where one guide shaft 42 is inserted, and the other normal spring member 32 is In the state where the other guide shaft 42 is inserted, the other fixed frame member 40 and the other movable frame member 41 are interposed. One shape memory spring member 33 is interposed between the other fixed frame member 40 and one movable frame member 41 in a state where one guide shaft 42 is inserted, and the other shape memory spring member is inserted. 33 is interposed between one fixed frame member 40 and the other movable frame member 41 in a state where the other guide shaft 42 is inserted. That is, the normal spring members 32 and 32 and the shape memory spring members 33 and 33 are both arranged diagonally across the joint.

  The movement amount adjusting member 34 includes a pair of adjusting bolts 50, 50 arranged in parallel to the guide shafts 42, 42 while penetrating the frame members 40, 40, 41 outside the guide shafts 42, 42, and these adjustments. And a plurality of adjusting nuts 51 screwed into the adjusting bolts 50. The adjustment bolts 50, 50 are formed with screw portions over substantially the entire length thereof. One adjustment bolt 50 passes through one fixed frame member 40, one movable frame member 41, and the other fixed frame member 40 with its head in contact with the outside of one fixed frame member 40. Then, the nut 52 is screwed and tightened to the screw portion protruding to the outside of the other fixed frame member 40, so that the frame member 40, 40, 41 is attached. The other adjustment bolt 50 penetrates one fixed frame member 40, the other movable frame member 41, and the other fixed frame member 40 with its head in contact with the outside of the one fixed frame member 40. Then, the nut 52 is screwed and tightened to the screw portion protruding to the outside of the other fixed frame member 40, so that the frame member 40, 40, 41 is attached. A pair of adjustment nuts 51, 51 are screwed to the adjustment bolts 50, 50 so as to sandwich the movable frame members 41, 41, and the movable frame members slide along the guide shafts 42, 42. 41 and 41 are brought into contact with the adjusting nuts 51, respectively, so that the movement of both joint constituent members 30A and 30B is restricted. Accordingly, by appropriately changing the screwing position of the adjusting nuts 51, 51 in each adjusting bolt 50, that is, the interval between the adjusting nuts 51, 51, it is lateral to the mating side of both joint constituent members 30A, 30B. It is possible to adjust the amount of movement in two opposite directions that cause a shift.

  Next, a method for confirming the deterioration state of the sealing material S caused by the dynamic behavior of the joint using the test apparatus having the above configuration will be described. First, the sealing material S is filled and attached to the joint portion between the joint constituent members 30A and 30B. In this filling and mounting, the joint component members 30A and 30B are removed, and the assembled product (with the sealing material S interposed between the joint component members 30A and 30B) is formed in both joint configurations. The members 30A and 30B are attached while being held by the holding members 44 and 44 of the movable frame members 41 and 41 and guided by the guide pieces 43.

  This test apparatus is installed in a laboratory where the temperature can be adjusted or in an accelerated weathering tester such as a sunshine weather meter. If installed in the accelerated weathering tester, it is possible to check the deterioration status taking into account the external environment such as solar radiation and rainfall.

  Then, the temperature of the shape memory spring members 33 and 33 is repeatedly changed to a normal temperature lower than a predetermined temperature (transformation point) and a predetermined temperature (transformation point) or more. Specifically, the shape memory spring materials 33 and 33 are heated every predetermined time. When the shape memory spring members 33, 33 are at a room temperature lower than a predetermined temperature (transformation point), the biasing force of the normal spring members 32, 32 exceeds the biasing force of the shape memory spring members 33, 33, so that FIG. As shown in FIG. 1, one movable frame member 41 is pushed rightward in the drawing, and the other movable frame member 41 is pushed leftward in the drawing to come into contact with the adjusting nuts 51, 51 along the guide shafts 42, 42. Slide until. As a result, the joint members 30A and 30B move in one direction that causes a lateral shift with respect to the other side, and a shearing force is applied to the sealing material S. In addition, when the shape memory spring material 33, 33 recovers its shape at a predetermined temperature (transformation point) or higher, the biasing force of the normal spring material 32, 32 is less than the biasing force of the shape memory spring material 33, 33. As shown in FIG. 10 (b), one movable frame member 41 is pushed in the left direction in the drawing, and the other movable frame member 41 is pushed in the right direction in the drawing. , Slide until abutting 51. As a result, both joint members 30A and 30B move in the other direction opposite to the one direction causing the lateral displacement with respect to the other side, and the sealing material S is sheared in a direction different from the above shearing force. Power is granted. As described above, by moving the joint constituent members 30A and 30B in two opposite directions and repeatedly applying a shearing force to the sealing material S, the deterioration state of the sealing material S due to the dynamic behavior of the joint portion is determined. , Can be confirmed accurately in a short time.

  In the above embodiment, the normal spring members 32 and 32 and the shape memory spring members 33 and 33 are both compression coil springs, but both may be tension coil springs. In this case, the shape memory spring members 33 and 33 are extended when the room temperature is lower than a predetermined temperature (transformation point), and are contracted when the shape recovers after reaching a predetermined temperature (transformation point) or higher.

  Moreover, in the said embodiment, although both joint components 30A and 30B moved in the two opposite directions which produce a horizontal shift with respect to the other party, as shown in FIG. 11, for example, the other The movable frame member 41 may be abolished, and one joint constituent member 30A may be moved in two opposite directions that cause a lateral shift with respect to the other joint constituent member 30B. In this case, the other joint constituent member 30B is held by holding members 47 and 47 fixed to the fixing members 40 and 40, for example.

Furthermore, as a reference example, as shown in FIG. 12 , for example, the normal spring materials 32 and 32 are abolished by using the elastic restoring force of the sealing material S, and both joint constituent members 30A and 30B are moved to the other side. Therefore, the structure is further simplified by using only the shape memory spring members 33 and 33 for biasing in the direction in which the lateral displacement occurs . In this case, the shape memory spring material 33, 33 is at a predetermined temperature (transformation point) or higher than the urging force when the shape memory spring material 33, 33 is at a normal temperature lower than the predetermined temperature (transformation point). As shown in FIG. 13, the amount of movement in the direction that causes a lateral shift with respect to the mating side of both joint constituent members 30 </ b> A and 30 </ b> B and the sealing material S associated therewith are applied. The shearing force is repeatedly applied to the sealing material S by changing the shearing force to be changed according to the temperature change of the shape memory spring materials 33 and 33.

  The present invention is not limited to the above embodiment, and it is needless to say that many modifications and changes can be made to the above embodiment within the scope of the present invention.

1 is a plan view of a deterioration test apparatus according to a first embodiment of the present invention. It is a top view which similarly shows the operation | movement. It is a top view which shows a modification. It is a top view which shows a modification. It is a top view which shows a reference example . It is a top view which similarly shows the operation | movement. It is a top view which shows a reference example . It is a top view which similarly shows the operation | movement. It is a top view of the deterioration test apparatus concerning a 2nd embodiment. It is a top view which similarly shows the operation | movement. It is a top view which shows a modification. It is a top view which shows a reference example . It is a top view which similarly shows the operation | movement. It is a side view of the conventional deterioration test apparatus.

Explanation of symbols

  S ·· Sealing material, 2A, 2B, 30A, 30B ·· Jointing member, 3, 31 ·· Guide member, 4, 32 ·· Normal spring material, 5, 33 ·· Shape memory spring material, 6, 34 ·・ Movement adjustment member

Claims (3)

A pair of joint-constituting members (2A) (2B) arranged opposite to each other to constitute a joint part for filling and mounting the sealing material (S) to be tested, and supporting these joint-constituting members (2A) (2B) A guide member (3) for movably guiding at least one joint constituent member (2A) in a direction approaching and separating from the other joint constituent member (2B), and at least one joint constituent member (2A). The normal spring material (4) (4) for always energizing in the direction away from the other joint constituent member (2B) and the at least one joint constituent member (2A) are replaced with the other joint constituent member (2B). ) And the shape memory spring material (5) (5) for urging in the direction approaching to the other and the other joint constituent member (2B) in the at least one joint constituent member (2A). Direction And a moving amount adjusting member for adjusting (6) the momentum, when the shape memory spring member (5) (5) is a temperature lower than a predetermined temperature, the biasing force of the normal spring material (4) (4) Exceeds the urging force of the shape memory spring material (5) (5), the at least one joint constituent member (2A) moves in a direction away from the other joint constituent member (2B) and When the sealing material (S) is extended and the shape memory spring material (5) (5) recovers its shape at a predetermined temperature or higher, the biasing force of the normal spring material (4) (4) is changed to the shape. By falling below the urging force of the memory spring members (5) and (5), the at least one joint constituent member (2A) moves in the direction approaching the other joint constituent member (2B), and the sealing member ( Degradation of sealing material characterized by compressing S) Test equipment. A pair of joint-constituting members (2A) (2B) arranged opposite to each other to constitute a joint part for filling and mounting the sealing material (S) to be tested, and supporting these joint-constituting members (2A) (2B) A guide member (3) for movably guiding at least one joint constituent member (2A) in a direction approaching and separating from the other joint constituent member (2B), and at least one joint constituent member (2A). The normal spring material (4) (4) for always energizing in the direction approaching the other joint constituent member (2B) and the at least one joint constituent member (2A) are replaced with the other joint constituent member (2B). The shape memory spring members ( 5) and (5) for urging them in a direction away from each other) and the other joint constituent member (2B) in the at least one joint constituent member (2A). Direction And a moving amount adjusting member for adjusting (6) the momentum, when the shape memory spring member (5) (5) is a temperature lower than a predetermined temperature, the biasing force of the normal spring material (4) (4) Exceeds the urging force of the shape memory spring material (5) (5), the at least one joint constituent member (2A) moves in a direction approaching the other joint constituent member (2B) and When the sealing material (S) is compressed and the shape memory spring material (5) (5) recovers its shape at a predetermined temperature or higher, the biasing force of the normal spring material (4) (4) is changed to the shape. By lowering the urging force of the memory spring material (5) (5), the at least one joint constituent member (2A) moves away from the other joint constituent member (2B) and moves to the sealing material ( Degradation of sealing material characterized by extending S) Test equipment. While supporting a pair of joint-constituting members (30A) (30B) arranged opposite to each other and constituting a joint part for filling and mounting the sealing material (S) to be tested, and these joint-constituting members (30A) (30B) A guide member (31) that guides at least one joint constituent member (30A) so as to be movable in two opposite directions that cause lateral displacement with respect to the other joint constituent member (30B); and at least one joint construction A normal spring material (32) (32) for constantly urging the member (30A) in one direction causing a lateral shift with respect to the other joint constituent member (30B), and the at least one joint constituent member (30A); ) And the shape memory spring material (33) (33) for urging the other joint constituent member (30B) in the other direction opposite to the one direction causing the lateral displacement, And a movement amount adjusting member (34) for adjusting a movement amount in two opposite directions that cause a lateral shift with respect to the other joint constituting member (30B) in the one joint constituting member (30A), When the memory spring material (33) (33) is at a temperature lower than a predetermined temperature, the biasing force of the normal spring material (32) (32) exceeds the biasing force of the shape memory spring material (33) (33). Thus, the at least one joint component member (30A) moves in one direction causing a lateral shift with respect to the other joint component member (30B) to apply a shearing force to the sealing material (S), When the shape memory spring material (33) (33) recovers its shape when the temperature is higher than a predetermined temperature, the biasing force of the normal spring material (32) (32) is applied to the shape memory spring material (33) (33). By falling below the force, At least one joint constituent member (30A) moves in the other direction opposite to the one direction causing a lateral shift with respect to the other joint constituent member (30B), and the shearing force is applied to the sealing material (S). Is a sealing material deterioration test device characterized by applying shearing forces in different directions .