JP3842937B2 - Continuous impact sound generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to comparison and evaluation of walking impact sound characteristics in a floor portion of a building or the like, and particularly to provision of a continuous impact sound generating apparatus that can be used for comparison and evaluation of continuous walking impact sound characteristics that approximate real walking.
[0002]
[Prior art]
In a house or the like, a blocking characteristic such as an impact sound on the floor, particularly a walking sound, is an important element from the viewpoint of ensuring comfortable living in the house or the like.
[0003]
From this point, the impact on the target floor portion configured to measure and evaluate the impact sound characteristics in the floor portion of a house, etc., and to provide a house having a floor configuration with the desired impact sound blocking characteristics. It was necessary to measure and evaluate the sound characteristics and use it as a study document for the floor structure constituting the floor, the floor material used for the floor, and the flooring structure of the floor.
[0004]
When measuring and evaluating the impact sound characteristics at the floor, the impact sound at the evaluation target floor is measured using a tapping machine or a bang machine to evaluate the target floor, or substitute for basketball or walking impact. A single fall object such as an object is dropped from a predetermined height, and the impact sound is measured to evaluate the target floor.
[0005]
[Problems to be solved by the invention]
However, in the measurement of the impact sound at the floor using the tapping machine or the bang machine, the impact sound generated by the tapping machine or the bang machine is different from the impact sound characteristic generated by the actual walking of the original person. Since it has sound characteristics, it has been difficult to measure and evaluate the impact sound accompanying walking of a person on the target floor.
[0006]
In addition, in the measurement and evaluation of the impact sound on the floor using a single fallen object such as the above-mentioned basketball or walking impact substitute, the fall conditions at the time of actual measurement vary and are reproduced in the measurement. In addition, there is a problem that it is difficult to bring an impact sound corresponding to a continuous impact sound in which a person actually walks to the target floor.
[0007]
From this point, it has been attempted to evaluate the impact sound characteristics in the target floor by measuring and evaluating the walking sound due to actual walking in the target floor. The measurement of the gait sound is made.
However, in the measurement of the walking sound in the target floor due to the actual walking, there is a difficulty in the reproducibility of the walking in the target floor, each walking in the walking sound measurement is a different walking form, There were problems that were difficult to use for comparison and evaluation of measured walking sounds.
[0008]
It is an object of the present invention to provide a continuous impact sound generating device that eliminates the problems in the measurement and evaluation of walking sound with respect to the conventional target floor and enables accurate measurement and evaluation of walking sound on the target floor. Is.
[0009]
[Means for Solving the Problems]
In order to achieve such an object, the invention according to claim 1 comprises a pair of impact sound generators provided to be movable up and down,
A pair of cam means for raising the respective impact sound generators upward and releasing the push-up to cause the impact sound generators to fall and to produce a collision impact sound on the floor to be measured. ,
The impact sound generator includes a guide body and a drop weight body provided at a lower portion of the guide body so as to be movable in a vertical direction with respect to the guide body. The continuous impact sound generator is characterized in that the height position of the lower end of the falling weight body in the impact sound generator pushed up by the cam means can be adjusted.
[0010]
In the continuous impact sound generator configured as described above, a continuous impact sound similar to the generated walking sound expected in the measurement target floor can be reliably and reproducibly provided to the target floor. it can.
[0011]
Further, in the continuous impact sound generator configured as described above, the drop height of the impact sound generator that is used to be dropped so as to generate a collision impact sound on the floor to be measured is adjusted as needed. This can be adjusted to a height corresponding to the purpose of measurement.
[0012]
In order to achieve the above object, the invention according to claim 2 is used, and in the continuous impact sound generator according to claim 1, the stopper piece is rotated to the side of the impact sound generator. A positioning tool is provided, and the guide member of the impact sound generator is brought into contact with the stopper piece of the positioning tool, and the drop weight body in the vertical direction of the impact sound generator with respect to the guide body is provided. The continuous impact sound generator is characterized in that the movement adjustment is directed toward the head.
[0013]
In the continuous impact sound generator configured as described above, the drop height of the impact sound generator used for dropping so as to generate a collision impact sound on the floor to be measured can be easily and reliably measured. It can be adjusted to the corresponding height.
[0014]
In order to achieve the above object, the invention according to claim 3 includes a pair of impact sound generators provided to be movable up and down,
A pair of cam means for raising the respective impact sound generators upward and releasing the push-up to cause the impact sound generators to fall and to produce a collision impact sound on the floor to be measured. ,
The cam means has a plate cam provided on the rotating shaft, and the plate cam rotates so as to slide on the sliding contact portion of the impact sound generator and push the impact sound generator upward. The lifted sliding contact edge provided so as to gradually move away from the center of the shaft, and the impacting sound generating body pushed up by the lifted sliding contact edge from the lifted sliding contact edge so as to be allowed to fall. The continuous impact sound generator is provided with an edge provided so as to approach toward the rotating shaft side.
[0015]
In the continuous impact sound generator configured as described above, the impact sound generator constituting the continuous impact sound generator is reliably lifted, and the lift impact sound generator is securely mounted on the floor to be measured. It can be dropped so as to produce a collision impact sound.
[0016]
In order to achieve the object, the invention according to claim 4 is the continuous impact sound generator according to the invention according to claim 3, wherein the sliding contact portion of the impact sound generator in the plate cam is provided. The continuous impact sound generating device is characterized in that the sliding contact edge that pushes up the impact sound generator upward by sliding on the sliding contact edge is a sliding contact edge formed of an involute curve.
[0017]
In the continuous impact sound generator configured as described above, the impact sound generator constituting the continuous impact sound generator can be pushed up so as not to generate as much vibration as possible. .
[0018]
In order to achieve the object, the invention according to claim 5 is changed from the pair of continuous impact sound generators according to the invention according to claim 1, 2, 3, or 4 to the pair. The continuous impact sound generator is characterized in that the cam means alternately pushes up the pair of impact sound generators upward and releases the push-up to alternately drop the impact sound generators. It is as.
[0019]
In the continuous impact sound generator configured as described above, it is possible to reliably bring an impact on the measurement target floor portion in a continuous state with good reproducibility.
[0020]
In order to achieve the above object, the invention according to claim 6 is changed from the invention according to claim 1, claim 2, claim 3, claim 4 or claim 5 according to the invention according to claim 5. The continuous impact sound generator is characterized in that an adjustment weight can be detachably attached to the impact sound generator.
[0021]
In the continuous impact sound generator configured as described above, the impact sound generator that is used to drop so as to generate a collision impact sound on the floor to be measured is optionally measured, and the weight of the impact sound generator is measured. Can be adjusted according to.
[0023]
In order to achieve the above object, the invention according to claim 7 is changed from the invention according to claim 1, claim 2, claim 3, claim 4, claim 5 or claim 6. In the impact sound generation device, a continuous impact sound generation device characterized in that a frame including the impact sound generator and the cam means has three or more support legs, and the length of the support legs is adjustable. is there.
[0024]
In the continuous impact sound generator configured in this way, by adjusting the length of the support leg, the fall height of the impact sound generator that is used to drop so as to generate a collision impact sound on the floor to be measured, At any time, the height can be adjusted to the height corresponding to the measurement purpose.
[0025]
In order to achieve the above object, the invention described in claim 8 is changed from the invention described in claim 1, claim 2, claim 3, claim 4, claim 5, claim 6 or claim 7 in claim 8. In the continuous impact sound generating device according to the invention, the gantry including the impact sound generator and the cam means has three or more support legs, and the support legs have elastic spherical leg seats. As a continuous impact sound generator.
[0026]
In the continuous impact sound generator configured as described above, the vibration generated in the gantry accompanying the push-up and drop impact of the impact sound generator in the continuous impact sound generator is transmitted to the floor to be measured. Therefore, it is possible to accurately measure the drop impact sound without relatively separating the distance between the support leg of the gantry and the drop position of the impact sound generator.
[0027]
In order to achieve the object, the invention described in claim 9 is changed from the invention described in claim 1, claim 2, claim 3, claim 4, claim 5, claim 7, claim 7 or claim 10. In the continuous impact sound generating device according to the invention described in claim 8, a frame including the impact sound generator and the cam means has three or more support legs, and at least one support leg of the support legs includes the support legs. The continuous impact sound generating device is provided on the distal end side of an arm provided so as to be rotatable about a vertical axis with respect to a gantry.
[0028]
In the continuous impact sound generating device configured as described above, it is possible to set the continuous impact sound generating device in a state where the support interval by the support legs in the gantry is separated when the continuous impact sound generating device is used. In addition, the distance between the support legs in the gantry can be reduced, and the apparatus can be transported and stored.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the continuous impact sound generator Y according to an exemplary embodiment of the present invention will be described in detail.
[0030]
1 to 7 show a continuous impact sound generator Y according to a typical embodiment of the present invention. In FIG. 1, the continuous impact sound generator Y according to this embodiment is shown. FIG. 2 shows the folded state of the arm 12 of the support leg 16 in the continuous impact sound generator Y as viewed from above.
In FIG. 3, the use state of the continuous impact sound generator Y is viewed from the front side, and in FIG.
5 shows a state where the impact sound generator 20 is pulled upward in the continuous impact sound generator Y, and FIG. 6 shows a state where the impact sound generator 20 is dropped toward the floor D to be measured. A cross section is shown in the vertical direction.
Further, FIG. 7 shows a state in which the impact sound generator 20 in the continuous impact sound generator Y is held by using the positioning tool E in the vertical direction in a cross section in the vertical direction.
[0031]
The continuous impact sound generator Y according to this exemplary embodiment includes a pair of impact sound generators B that are provided so as to freely move up and down, and pushes up each of the impact sound generators B and It is configured to have a pair of cam means C that release the push-up and drop the impact sound generator B to generate a collision impact sound on the floor D to be measured.
[0032]
In the continuous impact sound generator Y configured as described above, a continuous impact sound similar to the generated walking sound expected in the measurement target floor D is reliably and reproducibly generated with respect to the target floor D. Can bring.
[0033]
Further, in the continuous impact sound generating device Y according to the above configuration, the pair of cam means C alternately pushes the pair of impact sound generators B upward and releases the pushes to generate the impact sound generators. B may be configured to fall alternately.
[0034]
In the continuous impact sound generator Y configured as described above, the impact on the measurement target floor D can be reliably brought to the measurement target floor D in a continuous state with good reproducibility.
[0035]
Moreover, in the continuous impact sound generator Y according to the above configuration, the adjustment weight 23 may be detachably attached to the impact sound generator B.
[0036]
In the continuous impact sound generator Y configured as described above, the impact sound generator B that is used to drop so as to generate a collision impact sound on the floor D to be measured is optionally weighted as needed. It can be adjusted and used according to the purpose of measurement.
[0037]
Further, in the continuous impact sound generator Y having the above-described configuration, the impact sound generator B is provided with a guide body 20 and a drop weight provided below the guide body 20 so as to be movable up and down with respect to the guide body 20. And a height position of the lower end of the falling weight body 21 in the impact sound generating body B pushed up by the cam means C by adjusting the falling weight body 21 in the vertical direction. Also good.
[0038]
In the continuous impact sound generator Y configured as described above, the drop height of the impact sound generator B used for dropping is adjusted as needed so as to generate a collision impact sound on the floor D to be measured. Thus, it can be used by adjusting it to a height corresponding to the purpose of measurement.
[0039]
Further, in the continuous impact sound generating apparatus Y according to the above configuration, a positioning tool E having a stopper piece 34 is provided on the side of the impact sound generating body B so as to be rotatable, and the stopper piece 34 in the positioning tool E is provided. The guide body 20 in the impact sound generator B may be brought into contact with the guide body 20 to adjust the movement of the falling weight body 21 in the vertical direction relative to the guide body 20 in the impact sound generator B. Good.
[0040]
In the continuous impact sound generator Y configured as described above, the drop height in the impact sound generator B that is used in a drop manner so as to generate a collision impact sound on the measurement target floor D is easily and reliably measured. The height can be adjusted to meet the purpose.
[0041]
Further, in the continuous impact sound generating device Y according to the above configuration, the cam means C has a plate cam 40 provided on the rotating shaft 41, and the plate cam 40 is a sliding contact portion of the impact sound generator B. 42 is provided so as to gradually move away from the center of the rotation shaft so as to push up the impact sound generator B upward by sliding on the slide 42, and the impact pushed up by the push-up sliding contact edge 40a. The sound generator B may be configured to include an edge 40c provided so as to approach the rotary shaft 41 from the push-sliding contact edge 40a so that the sound generator B can be dropped.
[0042]
In the continuous impact sound generator Y configured as described above, the impact sound generator B constituting the continuous impact sound generator Y is reliably lifted and the lift impact sound generator B is measured. The floor portion D can be dropped so as to reliably generate a collision impact sound.
[0043]
Further, in the continuous impact sound generating device Y according to the above-described configuration, the slidable contact that pushes the impact sound generator B upward by slidingly contacting the sliding contact portion 42 of the impact sound generator B in the plate cam 40. The edge 40a may be a sliding contact edge 40a made of an involute curve.
[0044]
In the continuous impact sound generating device Y configured as described above, the impact sound generator B constituting the continuous impact sound generating device Y is pushed up so as not to generate as much vibration as possible. be able to.
[0045]
Further, in the continuous impact sound generator Y according to the above configuration, the gantry A including the impact sound generator B and the cam means C has three or more support legs 16, and the length of the support legs 16 can be adjusted. It may be as.
[0046]
In the continuous impact sound generator Y configured as described above, the drop height of the impact sound generator B that is used so as to generate a collision impact sound on the floor D to be measured is set to the length of the support leg 16. By adjusting the height, it can be used at any time by adjusting the height corresponding to the measurement purpose.
[0047]
Further, in the continuous impact sound generating apparatus Y according to the above-described configuration, the gantry A including the impact sound generator B and the cam means C provided to be movable up and down has three or more support legs 16 and the support legs 16 are elastic. It may be configured to have a leg seat 17 of a spherical body 17 ′.
[0048]
In the continuous impact sound generator Y configured as described above, a floor portion to be measured for vibrations generated in the gantry A due to the impact sound generator B being pushed up or dropped by the continuous impact sound generator Y. Even when the distance between the support leg 16 on the gantry A and the drop position of the impact sound generator B is set close, the measurement target floor of the impact sound generator B can be effectively blocked. The impact sound with respect to the part D can be measured without noise.
[0049]
Further, in the continuous impact sound generator Y having the above-described configuration, the gantry A including the impact sound generator B and the cam means C provided to be movable up and down has three or more support legs 16, and At least one or more support legs 16 may be provided on the distal end side of the arm 12 provided so as to be rotatable with respect to the gantry A with a vertical axis.
[0050]
In the continuous impact sound generator Y configured as described above, the support interval by the support legs 16 in the gantry A can be separated when the continuous impact sound generator Y is used, and the support in the gantry A is supported. The interval between the legs 16 can be narrowed, and the continuous impact sound generator Y can be transported and stored.
[0051]
The gantry A constituting the continuous impact sound generator Y includes a base plate 10 having a rectangular shape and support legs 16 to 16 for maintaining the base plate 10 at a predetermined height. The configuration is such that the target impact sound can be brought to the measurement target floor portion D by dropping toward the measurement target floor portion D from a predetermined height.
[0052]
The platform 10 constituting the gantry A is configured in a rectangular shape and includes three support legs 16 to 16, and a first support is provided at a substantially central portion on one side of the longitudinal side. A second support leg 16 is attached to a pair of arms 12, 12 that are provided with a leg 16 so as to be pivotable in a horizontal direction by a pivot shaft that is perpendicular to the other end of the longitudinal side of the base plate 10. The third support leg 16 is provided.
[0053]
The arm 12 having the support leg 16 has an arm body portion 12A having a square bar shape and an arm bending portion 12B which is bent at a right angle from the arm body portion 12A and is continuous. The supporting leg 16 is configured to hang downward from the tip side.
[0054]
The base 10 on which the arm 12 is provided is configured to include a pair of reinforcing frames 11, 11 that face each other on both sides of the lower surface width side thereof and extend in the longitudinal direction while being biased toward one of the longitudinal directions. 11 has an inner flange 11a protruding toward the lower end edge thereof, and the space between the outer side surface and the lower surface of the base 10 outside the reinforcing frame 11 rotates toward the reinforcing frame 11. The arm 12 has a storage space 15 in which the arm main body portion 12A is accommodated, and a space between the side end of the reinforcing frame 11 and one longitudinal side end of the base plate 10 is the rotation of the arm bending portion 12B. It is a moving space 15 ′.
[0055]
With respect to the base plate 10 having such a configuration, a pair of arms 12 and 12 are provided on the lower surface on one side of the longitudinal side of the base plate 10 so that the arm bent portions 12B and 12B in the arm 12 are arranged on the side of each other. The arm main body 12A, 12A is in a parallel state in contact with the end surface 12b, and the arm main body 12A, 12A is aligned from the longitudinal direction of the base plate 10 along the width direction of the base plate 10 on one end side. The rotary shaft 14 is vertically oriented at the tip of the arm bent portion 12B so that the portion 12A can be rotated along the outer side surface of the reinforcing frame 11 toward the position in the storage space 15. The upper surface of the arm bending portion 12B and the arm main body portion 12A of the arm 12 is horizontally turned along the lower surface of the base plate 10 and is assembled to the base plate 10. .
The rotating shaft 14 is screwed to a bolt portion 14a provided through the arm bending portion 12B from the base plate 10 and a protruding portion of the bolt portion 14a protruding below the arm bending portion 12B. The configuration includes a nut portion 14b.
[0056]
Here, the pair of arms 12 provided on the base plate 10 has the arm bent portions 12B and 12B in a parallel state so that each arm bent portion 12B constituting the arm 12 is in contact with the side end surface 12b. In addition, the hook ring 13a of the hanging fastener 13 provided on the outer end surface 12c of each arm body 12A, 12A is hooked to the hook claw 13b with the arm body 12A, 12A positioned on the same straight line. In this state, the arms 12 and 12 are maintained in series in a direction orthogonal to the length side of the platform 10.
[0057]
The arm bent portion 12B constituting the arm 12 has a semicircular arc end surface 12a on the distal end side of the arm bent portion 12B on the distal end side from the rotation shaft 14, and the side end surface 12b of the arm bent portion 12B is defined as a side end surface 12b. The side end surfaces 12b are aligned with each other in the width direction of the base plate 10 at one end on the longitudinal side of the base plate 10 from the position where they are in contact with each other. It is provided so that it can be rotated.
[0058]
The base 10 and the support leg 16 provided on the arm 12 of the base 10 to hold the base 10 at a predetermined height are configured to be adjustable in length, and the lower surface of the base 10 or the arm The main body 12A is provided in a vertically extending state integrally with the lower surface of the main body 12A, and the leg main body 16a having a female screw hole 16a 'upward from the lower end side thereof, and the vertical movement adjustment to the female screw hole 16a' are possible. An elastic spherical body made of a screw rod-like leg adjusting portion 16b to be screwed in, a leg seat receiving portion 16c provided at the lower end of the screw rod-like leg adjusting portion 16b, and a rubber material received by the leg seat receiving portion 16c. It has a leg seat 17 as 17 ', and is configured such that its leg length can be adjusted.
[0059]
In addition, the leg seat receiving portion 16c is configured in the shape of an inverted plate in which a peripheral edge of a disk-like body integrally provided at the lower end of the screw rod-like leg adjusting portion 16b is a peripheral bowl that hangs downward. The upper side of the leg seat 17 as the elastic spherical body 17 ′ is received in the leg seat receiving portion 16 c having an inverted plate shape, and the platform 10 can be supported on the leg seat 17. A variety of vibrations generated in A are transmitted to the floor D to be measured via the support legs 16, in particular, the problems measured by the impact sound measuring means provided in the floor D to be measured are eliminated, By adjusting the length of the support leg 16, the height of the base 10 in the gantry A can be adjusted to a height convenient for the measurement of impact sound using the continuous impact sound generator Y. It is like that.
[0060]
A pair of impact sound generators B, B and a pair of the impact sound generator B are pushed upward on the platform 10 of the gantry A and released to release the impact sound generator B. The continuous impact sound generator Y is configured by providing the cam means C.
[0061]
The pair of impact sound generators B constituting the continuous impact sound generator Y are configured so as to be movable up and down with respect to the gantry A. In the illustrated example, the guide body 20 and the drop are provided. It is comprised with the weight body 21. FIG. That is, the guide of the guide post 30 provided with the guide hole 30d so that the guide rod 28 in the guide body 20 having the falling weight body 21 on the lower side communicates with the base plate 10 in the gantry A in the vertical direction. The falling weight body 21 is inserted into the hole 30d so as to be movable up and down, and the falling weight body 21 can be dropped toward the measurement target floor D from the push-up position by the cam means C by its own weight.
[0062]
The impact sound generator B is configured to be movable up and down with respect to the base plate 10 of the gantry A. More specifically, the impact sound generator B includes a drop weight body 21 and a drop weight body 21. Is configured to have a guide body 20 that is assembled to the base 10 of the base A so as to be movable up and down. The guide body 20 includes a mounting screw rod 25 for assembling the drop weight body 21 so that the height can be adjusted in the vertical direction, and a pair of guide rods 28 assembled to the mounting screw rod 25 via a lower connecting plate 31. The upper connecting plate 32 that connects the upper ends of the pair of guide rods 28 is formed.
[0063]
That is, the guide body 20 constituting the impact sound generator B provided on the base 10 of the gantry A here is provided with a guide rod 28 on the pair of guide posts 30 and 30 provided on the base 10 of the gantry A, respectively. In addition, the upper end of each guide rod 28 protruding upward from the guide post 30 is connected by an upper connecting plate 32 and the guide rod 28 protruding downward from the guide post 30. The lower connecting plate 31 is connected by a lower connecting plate 31, and a mounting screw rod 25 is provided so as to hang downward from the lower connecting plate 31, and these are integrally guided to the guide post 30. It is provided in the base plate 10 that constitutes the gantry A so as to be movable up and down.
[0064]
A continuous impact sound generator Y is configured by providing a drop weight body 21 with a height adjustable with respect to a mounting screw rod 25 in a guide body 20 provided to be movable up and down with respect to the base plate 10 of the gantry A. I have to do it.
[0065]
The falling weight body 21 in the impact sound generator B can be used for measurement and comparison of walking sound on the measurement target floor D when it is dropped from a required height toward the measurement target floor D. In the illustrated example, the lower portion is a collision head 21 a covered with a buffer covering material 22, and this collision head A main body 21c is integrally provided on 21a via a neck portion 21b, and an attachment handle 21e is integrally protruded from the center of the upper end surface of the main body 21c.
[0066]
More specifically, the falling weight body 21 is provided with a collision head 21a covered with the buffer covering material 22 in a hemispherical body that gradually decreases in diameter toward the lower end that is the front end of the collision, and is close to a walking impact sound. A drop impact sound is generated, and the diameter of the collision head 21a is larger than the diameter of the neck portion 21b via a cylindrical neck portion 21b having a diameter smaller than the diameter of the circular upper end surface 21a '. The main body portion 21c has a cylindrical main body portion 21c, and the main body portion 21c has a flush upper end surface 21c 'extended outward by an overhanging flange 21d provided on the outer periphery of the upper portion. The assembly handle portion 21e having a circular cross section is integrally provided from the center of the upper end surface 21c ', and the assembly handle portion 21e is formed into a screw rod shape having a male screw 21g on the outer periphery. 21e top surface A configuration equipped with a female screw hole 21f from 1e 'toward the side of the neck 21b.
[0067]
Further, the buffer covering material 22 made of various elastic materials provided in the collision head 21a in the falling weight body 21 has a thickness of about 12 mm by pouring liquid urethane rubber into the mold in the illustrated example. The buffer covering material 22 is provided so as to be integrally covered with the collision head 21a by the self-adhesive force of the urethane rubber, and a hemispherical cap-shaped portion 22a covering the collision head 21a and the cap-shaped portion It has a configuration having an inner flange portion 22b that protrudes inward along the opening edge of 22a so as to produce a drop impact sound close to a walking impact sound. That is, the cap-shaped portion 22a is mounted on the collision head 21a, and the inner flange portion 22b is provided on the collision head 21a in a state of being hooked on the upper end surface 21a ′ of the collision head 21a. The falling weight body 21 is configured.
[0068]
In addition, the falling weight body 21 constituting the impact sound generator B is optionally attached to the assembly pattern portion 21e so that the weight of the impact sound generator B can be changed and used during measurement and use. The weight 23 for adjusting the required weight can be mounted and used.
[0069]
The adjustment weight 23 used for mounting on the falling weight body 21 is formed in a circular plate shape having a predetermined thickness with a predetermined weight, and the mounting hole 23a opened in the center thereof has the above-described structure. The adjustment weight 23 is placed on the upper end surface 21c 'of the main body 21c of the falling weight body 21 so as to pass through the assembly handle 21e, and the number corresponding to the number of the impact sound generator B having the intended target weight. The stacking adjustment weight 23 is clamped and fixed between the upper end surface 21c 'and the nut 24 screwed on the male screw 21g of the assembly handle portion 21e.
[0070]
The falling weight body 21 having such a configuration is assembled and used by the mounting screw rod 25 so that the mounting height position thereof can be adjusted with respect to the guide rod 28 in the guide body 20 provided in the base 10 constituting the gantry A.
[0071]
The mounting screw rod 25 used for assembling the falling weight body 21 has a male screw on the outer periphery thereof that is screwed into a female screw hole 21f provided in the falling weight body 21 so as to be able to advance and retract. The body 21 is adjusted and positioned so as to have a target height with respect to the mounting screw rod 25, and a lock nut 27 screwed into the mounting screw rod 25 is attached to the upper end surface 21e ′ of the assembly handle portion 21e in the falling weight body 21. The falling weight body 21 can be locked at the adjustment position.
[0072]
The falling weight body 21 is assembled so that the height position thereof can be adjusted, and the guide rod 28 of the guide body 20 constituting the impact sound generating body B together with the falling weight body 21 is configured as a pair of vertical rod-like bodies provided in parallel. In addition, the lower end plate 31 is assembled with the lower connecting plate 31 so as to be integrated with each other, and the upper end side is assembled with the upper connecting plate 32 so as to be integrated with each other to form a substantially right-angled parallelogram shape. It is configured so as to form a part of the shape.
More specifically, the paired guide rods 28 are lower screw rod portions 28b having a diameter smaller than that of the main body portion 28 'of the guide rods 28 provided at the lower and upper portions of the guide rods 28, respectively. The upper screw rod portion 28a is inserted into a mounting hole provided on each side of the lower connecting plate 31 and the upper connecting plate 32 each having a plate-like shape provided in a lateral direction and protrudes from the lower connecting plate 31. The lower screw rod portion 28b and the upper screw rod portion 28a protruding from the upper connecting plate 32 are integrally assembled with each other by nuts 29 screwed.
[0073]
With respect to the mounting hole provided in the substantially central portion of the lower connecting plate 32 that connects the pair of guide rods 28, a stepped surface 25c that abuts the peripheral edge of the mounting hole is provided at the upper end of the mounting screw rod 25. The screw rod portion 25b having a diameter smaller than that of the main body portion 25a of the mounting screw rod 25 that is provided so as to protrude from the upper end portion is inserted, and the thin portion protruding upward from the lower connection plate 31 is inserted. By assembling the mounting screw rod 25 integrally with the lower connecting plate 31 by means of a nut 26 screwed onto the diameter screw rod portion 25b, the guide rods 28, an upper connecting plate 32 and a lower connecting plate for connecting the guide rods 28 are provided. The guide body 20 is configured together with 31.
The impact sound generator B is configured by screwing the drop weight body 21 to the mounting screw rod 25 in the guide body 20 so that the mounting height position thereof can be adjusted.
[0074]
In the illustrated example, the pair of impact sound generators B having such a configuration is inserted into the guide posts 30 provided on the base plate 10 constituting the gantry A through the guide rods 28 in the guide body 20. Thus, the falling weight body 21 in each of the impact sound generators B is configured to be able to drop from the pushed-up position by the cam means C toward the measurement target floor portion D below the platform 10. .
[0075]
A pair of guide posts 30, 30 for guiding the pair of guide rods 28 in the guide body 20 of the individual impact sound generator B are located between the inner flanges 11 a of the reinforcing frames 11, 11 of the base plate 10. The guide rod 28 is provided at a position for guiding the impact sound generator B assembled to the base plate 10 so that it can operate conveniently. In this illustrated example, a rotating shaft provided with a plate cam 40 to be described later is provided. The lower connecting plate 31 and the upper connecting plate 32 of the guide body 20 obliquely intersect with the 41 axis, and the pair of guide posts 30 and 30 are positioned on both sides of the axis.
[0076]
The guide post 30 for guiding the guide rod 28 of the guide body 20 is constituted by a cylindrical body having a guide hole 30d communicating in the vertical direction, and the outer peripheral flange 30c is in contact with the upper surface of the platform 10 and The lower cylinder part 30b below the outer peripheral flange 30c is inserted into the mounting hole 10a provided in the board 10, and the upper cylinder part 30a stands up from the upper surface of the board 10 so as to stand upward. The guide rod 28 can be moved and guided smoothly in the vertical direction.
[0077]
The guide post 30 that guides the guide rod 28 of the guide body 20 is, for example, a guide in the guide post 30 so that the guide rod 28 guided by the guide post 30 can be moved in a mode with as little resistance as possible. An annular ball bearing is provided on the inner periphery of the guide portion of the rod 28, and the guide rod 28 is smoothly guided by this ball bearing.
[0078]
In assembling the guide body 20 to the base 10 in the gantry A, typically, the guide post 30 is prepared after either the upper connection plate 32 or the lower connection plate 31 is prepared for assembly to the guide rod 28. The guide rod 28 is inserted into the other guide plate 28 and the other lower connection plate 31 or the upper connection plate 32 remaining at the other end of the insertion guide rod 28 is assembled and before the lower connection plate 31 is attached to the guide post 28 or After mounting, the mounting screw rod 25 can be assembled to the lower connecting plate 31.
[0079]
In this way, the pair of impact sound generators B provided on the gantry A so as to be movable up and down typically includes the pair of impact sound generators B having the same configuration along the rotation shaft 41 provided with the plate cam 40. The impact sound generators B are sequentially pushed up and dropped by respective cam means C having respective plate cams 40 that are rotationally driven by a motor 48.
[0080]
Each cam means C used for pushing up each impact sound generator B and dropping the impact sound generator B toward the floor D to be measured is rotated by a motor 48 and constitutes a frame A. A pair of plate cams 40 provided on the base plate 10 and a sliding contact portion 42 provided on each of the impact sound generators B and slidably contacted with the raised sliding contact edge 40a of the plate cam 40. It has a configuration that has
[0081]
Each of the plate cams 40 constituting the pair of cam means C has a bearing 44 and a bearing 45 provided on the base 10 in the rotating shaft 41 with respect to the rotating shaft 41 connected to the motor 48 by a coupling 47. Between the bearing 45 and the bearing 46, and is configured by a plate-like body as a sliding contact cam provided with a plate surface facing in a direction perpendicular to the axis of the rotating shaft 41. The rotation shaft 41 is provided with a cam sliding contact edge that generates a rotation locus that goes around the rotation axis.
[0082]
The plate cam 40 includes a push-up sliding contact edge 40a that slides on a roller 42 'serving as a sliding contact portion 42 provided on the impact sound generator B and pushes the impact sound generator B upward, and the push-up edge 40a. And the edge 40c that drops the impact sound generator B pushed up by the plate cam 40 from the push-up end 40b of the slide contact edge 40a. More typically, the push-up slide contact edge 40a is The impact sound generator B is pushed up by the push-up slide contact edge 40a from the push-up end 40b of the push-up slide contact edge 40a toward the rotating shaft side of the plate cam 40. It is set as the structure which has the edge 40c comprised so that it may approach toward the rotating shaft side so that it can fall below.
[0083]
The roller 42 ′ as the sliding contact portion 42 provided in the impact sound generator B to which the plate cam 40 is slidably contacted is the same rotation direction as the rotation direction of the plate cam 42, that is, the plate cam 42. The rotating shaft 42′a is rotated by a rotating axis parallel to the rotating axis of the rotating shaft 41, and is attached to the lower surface of the upper connecting plate 32 by a mounting frame 43.
[0084]
A pair of guide rods 28 in the guide body 20 of the impact sound generator B are located on both sides of the rotating shaft 41 and obliquely intersect the axis of the rotating shaft 41 with respect to the rotating shaft 41 of the plate cam 40. The rotation shaft 42 ′ a of the roller 42 ′ as the sliding contact portion 42 of the plate cam 40 provided in the impact sound generator B is provided with the rotation axis of the rotation shaft 41 of the plate cam 40. A continuous impact sound generator Y that can push up the impact sound generator B with the cam means C and drop it with a simple structure by rotating it around the parallel axis of rotation. Can do.
[0085]
The plate cam 40 according to this embodiment has a rotating shaft 41 oriented in a direction orthogonal to the plate surface of the plate cam 40, and is formed of an involute curve that gradually moves away from a position close to the rotating shaft 41. The sliding contact edge 40a is provided in such a form that the impact sound generator B can be pushed up to a desired height by the plate cam 40, and the lifting sliding contact edge 40a from the lifting end 40b of the lifting sliding contact edge 40a. In this example, the impact sound generator is provided with an edge 40c approaching the rotating shaft 41 so that the roller 42 'as the sliding contact portion 42 in contact with the roller 42' can be dropped. A configuration in which the edge 40c is provided in a vertical direction from the lifting end 40b of the lifting sliding contact edge 40a in the plate cam 40 in a state in which the roller 42 'provided in B is pushed up to the highest position. Are you. (See Figure 5)
[0086]
The plate cam 40 in the cam means C that pushes up the impact sound generator B and releases the impact sound generator B and drops the impact sound generator B is provided in a motor circuit having a rotational speed control means. The rotating shaft 41 driven by various motors 48 is provided with a configuration that causes the impact sound generator B to generate impact sounds corresponding to various walking speeds. For example, in a motor circuit having a rotational speed control means. A pair of impact sound generators B provided on a rotating shaft 41 rotated by a provided geared motor can be dropped sequentially at a predetermined time interval so as to generate a collision impact sound on the floor D to be measured. As a configuration.
[0087]
The impact sound generator B that constitutes the continuous impact sound generator Y is a guide rod in the impact sound generator B that is inserted in a vertically movable manner with respect to the guide post 30 of the base 10 in the gantry A. 28, as described above, the cam means C, more specifically, the guide body 20 in the impact sound generator B by the lifted sliding contact edge 40a of the plate cam 40 constituting the cam means C, The impact sound generator B, which is configured to have a length that can be pushed up to the push-up end 40b and is released from the push-up sliding contact edge 40a of the plate cam 40, collides with the floor D to be measured. In the illustrated example, the impact sound generator B applies a collision impact sound to the floor D to be measured as shown in FIG. 6. To cause In the lowered state, a slight gap is formed between the roller 42 ′ provided in the guide body 20 in the impact sound generator B and the push-up sliding contact edge 40 a in the plate cam 40. .
[0088]
Further, the guide body 20 provided to be movable up and down with respect to the guide post 30 in the base 10 of the base A causes the lower connecting plate 31 constituting the guide body 20 to be in contact with the lower surface of the base 10. Instead, the guide body 20 has a guide rod 28 of such a length that can be pushed upward by the plate cam 40 of the cam means C.
[0089]
Further, the guide rod 28 constituting the guide body 20 includes the guide body 20 when the push-up by the plate cam 40 in the cam means C pushing up the guide body 20 is released. The impact sound generator B is configured to have a length that can reliably fall so as to generate a collision impact sound on the floor D to be measured, that is, the impact sound generator B is pushed up by the plate cam 40. When releasing, the impact sound generator B generates a collision impact sound on the measurement target floor D without the roller 42 'in the guide body 20 constituting the impact sound generator B being obstructed by the plate cam 40. Thus, the guide rod 28 has a length that can be dropped.
[0090]
Further, in the continuous impact sound generator Y according to this embodiment, the impact sound generator B can be supported at a position where the impact sound generator B is pulled upward on the base plate 10 constituting the mount A, A positioning tool E provided with a stopper piece 34 that can be used as means for preventing the impact sound generator B from moving upward is provided.
The positioning tool E provided in the platform 10 includes a rod 33 provided in an upright state on the platform 10, a nut 35 and a tightening nut 36 that are screwed into a screw rod portion 33 a of the rod 33, and an annular mounting portion. 34 ′, the stopper piece 34 is rotatably assembled to the screw rod portion 33a.
[0091]
The stopper piece 34 provided on the rod 33 of the positioning tool E can be used with its tip contacting either the lower surface or the upper surface of the upper connecting plate 32 of the impact sound generator B, and its base side. And the annular mounting portion 34 'is rotatably fitted on the nut 35 screwed to the upper screw rod portion 33a of the rod 33. The tightening nut 36 screwed onto the fitted annular mounting portion 34 'can be fixed and used in a state of being directed in a predetermined direction and fixed in a state of being adjusted in the vertical direction.
[0092]
The stopper piece 34 of the positioning tool E is directed toward the vertical direction of the impact sound generator B when measuring the impact sound on the measurement target floor D using the continuous impact sound generator Y. In a case where the continuous impact sound generator Y configured to include the impact sound generator B is not used or transported, etc., is positioned so as to be rotated and fixed in a direction that does not hinder the movement. As shown by the solid line in FIG. 7, the stopper piece 34 is rotated and raised so that the lower surface of the upper connecting plate 32 is supported by the stopper piece 34 and the impact sound generator B can be maintained at a predetermined height. Adjust and use.
[0093]
Further, when the height of the falling weight body 21 constituting the impact sound generator B is adjusted in the vertical direction with respect to the guide body 20, the stopper piece 34 in the positioning tool E is lifted up by the plate cam 40. The upper surface of the upper connecting plate 32 of the impact sound generator B positioned at the position is rotated and height-adjusted so as to be pressed against the stopper piece 34 as indicated by a virtual line in FIG. The falling weight body 21 is moved and adjusted in the vertical direction with respect to the mounting screw rod 25 of the guide body 20 with the upper connecting plate 32 pressed against the piece 34.
Alternatively, when the height of the drop weight body 21 constituting the impact sound generator B is adjusted in the vertical direction with respect to the guide body 20, the stopper piece 34 in the positioning tool E is pushed up by the plate cam 40. The lower surface of the upper connecting plate 32 of the impact sound generator B positioned at the end position is rotated and height-adjusted so that it is supported by the stopper piece 34 as shown by the solid line in FIG. The falling weight body 21 is moved and adjusted in the vertical direction with respect to the mounting screw rod 25 of the guide body 20 while the upper connecting plate 32 is supported on the piece 34.
[0094]
The continuous impact sound generating device Y configured as described above generates continuous impact sounds to the various floors D to be measured using the continuous impact sound generating device Y. The generated continuous impact sound brought to the floor D to be measured using the apparatus Y is measured using various impact sound measuring means (not shown) separately prepared and installed, and the walking impact sound on the floor D to be measured is measured. Used for comparison of characteristics.
[0095]
The pair of arms 12 and 12 of the continuous impact sound generator Y having such a configuration are pulled out from the lower surface side of the base plate 10 so that the arm main body portions 12A and 12A are pivoted. By three support legs 16 to 16 which are in a state where the arm main body portions 12A and 12A are arranged in series along the short side edge of the base plate 10 at the long side end and the base plate 10 is separated from each other. The continuous impact sound generator Y is set on the measurement target floor D so as to support it.
[0096]
Next, by generating the weight of the impact sound generator B constituting the continuous impact sound generator Y and adjusting the number of adjustment weights 23 used for the drop weight body 21, the desired drop impact sound is generated. The continuous impact sound generator Y is used to adjust the fall distance of the impact sound generator B configured by adjusting the weight required for the fall weight body 21 and the adjustment weight 23 to the fall weight body 21. The drop weight so that a drop distance required to generate the target drop impact sound in the measurement is generated between the lower end of the drop weight body 21 and the floor D to be measured in the impact sound generator B. The body 21 is moved and adjusted with respect to the mounting screw rod 25 of the guide body 20 in the vertical direction, and the screw rod-like adjusting portion 16b of the support leg 16 is screwed into and retracted from the female screw hole 16a 'in the leg main body portion 16a. The branch The length of the holding leg 16 is adjusted.
[0097]
Further, when measuring the impact sound on the measurement target floor D using the continuous impact sound generator Y, typically, a buffer sheet 50 is attached on the measurement target floor D and the buffer sheet 50 is placed on the measurement target floor D. The impact sound generator B is dropped and collided to measure the drop impact sound at the floor D to be measured. In this typical and more specific measurement application example, a buffer sheet 50 made of a rubber sheet having a thickness of about 7 mm, more preferably a cellular rubber sheet having a thickness of about 7 mm, is used as the measurement target floor portion D. The impact sound generator B in the continuous impact sound generator Y is dropped on the buffer sheet 50 and the impact sound in the measurement target floor D is measured.
[0098]
In the generation of continuous impact sound for the floor D to be measured using the continuous impact sound generator Y having such a configuration, the continuous impact sound having the intended characteristics can be obtained with various reproducibility. D can be brought to D, and the impact sound similar to the continuous walking sound of various aspects is brought to the floor D to be measured, and by measuring and evaluating this, the walking sound characteristics on the various floors can be accurately determined, and Evaluation can be easily confirmed.
[0099]
The continuous impact sound generator Y according to the embodiment typically has the weight of the impact sound generator B (the total weight of the falling weight body 21 and the guide body 20 to which the adjustment weight 23 is added). Weight, that is, the total weight of the guide body 20 having the pair of guide rods 28, the upper connecting plate 32, the lower connecting plate 31, and the mounting screw rod 25 and the falling weight body 21 to which the adjustment weight 23 is appropriately added) Is adjusted to be approximately 4.24 kg, and the impact sound generator B is the highest position by the cam means C (that is, the roller which is the sliding contact portion 42 provided in the guide body 20). 42 'is pushed to the push-up sliding contact edge 40a of the plate cam 40 at a position in contact with the push-up end 40b, ie, the lower end of the impact sound generator B, that is, The distance X between the lower end of the falling weight body 21 in this state and the surface of the measurement target floor D (the surface of the measurement target floor D excluding the buffer sheet 50), that is, the generation of the continuous impact sound. The falling distance of the impact sound generator B in the device Y is about 16 mm for the measurement of the impact sound similar to the normal walking sound, about 34 mm for the measurement of the impact sound similar to the strong walking sound, and about 69 mm for the measurement of the impact sound similar to the short-running walking sound. As described above, the falling weight body 21 is adjusted by screwing back and forth in the vertical direction with respect to the mounting screw rod 25 of the guide body 20, or the leg length of the support leg 16 is adjusted to the female screw hole 16a ′ in the leg main body portion 16a. The screw rod-like leg adjusting portion 16b is adjusted by screwing back and forth, and the cam means C is rotated so that the pair of impact sound generators B, B are alternately pushed up and dropped alternately at predetermined intervals. Is controlled to measure a continuous impact sound in the floor D to be measured.
[0100]
Also, a rubber ball that is placed on a leg seat receiving portion 16c that is provided in a lower part of the support leg 16 and that has a leg seat 17 that receives the support leg 16 that supports the gantry A in a buffered manner. By using a spherical leg seat 17 having a body, more typically a Shore A hardness of 40, and a diameter of approximately 30 mm, the distance between the drop position of the impact sound generator B and the support leg 16 is approximately 150 cm. It is possible to accurately measure the falling impact sound of the impact sound generator B that is not affected by the vibration caused to the gantry A when the impact sound generator B is pushed up and dropped in a state closer to the ground. .
[0101]
In addition, since the impact sound generator B is pushed up by using the cam means C, the impact sound generator B can be pushed up with a simple configuration device. Typically, by making the lifted sliding contact edge 40a of the plate cam 40 used for the cam means C into a sliding contact edge 40a made of an involute curve, the impact sound generator B by the cam means C is not unreasonable. Push-up in the state can be made.
[0102]
In addition, the support legs 16 provided in the gantry A are typically provided with a pair of arms 12 provided so that the other two legs except one leg can be horizontally swiveled with respect to the platform 10. Therefore, when transporting or storing the continuous impact sound generator Y, the arm 12 is placed on the lower surface side of the base plate 10 along the longitudinal side thereof so as to be in a compact state. When the impact impact sound on the floor D to be measured is used, the arm 12 can be pulled out from the platform 10 to the side to provide a sufficient space between the support legs 16.
[0103]
【The invention's effect】
The continuous impact sound generator according to the present invention includes a pair of impact sound generators that are provided to be movable up and down, and pushes up each of the impact sound generators upward and releases the lift. Since the sound generator is dropped and has a pair of cam means for generating a collision impact sound on the measurement target floor, a continuous impact sound similar to the generated walking sound expected on the measurement target floor is This has the advantage that it can be reliably and reproducibly provided to the target floor.
[0104]
Further, in the continuous impact sound generator according to the above configuration, the pair of cam means alternately pushes the pair of impact sound generators upward and releases the lift to alternately cause the impact sound generators. By adopting the configuration of dropping, there is an advantage that an impact that generates a collision impact sound on the measurement target floor portion can be surely brought about in a continuous state with good reproducibility.
[0105]
Further, in the continuous impact sound generation device according to the above configuration, the adjustment sound can be detachably attached to the impact sound generator, so that the impact impact sound is generated on the floor to be measured. The weight of the generated impact sound generator can be adjusted at any time according to the purpose of measurement.
[0106]
Further, in the continuous impact sound generator according to the above configuration, the impact sound generator includes a guide body and a falling weight body provided at a lower portion of the guide body so as to be movable in the vertical direction with respect to the guide body. The height of the lower end of the falling weight body in the impact sound generating body pushed up by the cam means is adjusted by moving the falling weight body in the vertical direction so that the impact impact sound is applied to the floor to be measured. The drop height of the impact sound generator that is used so as to cause a drop is adjusted at any time, and this has the advantage that it can be adjusted to a height corresponding to the purpose of the measurement.
[0107]
Further, in the continuous impact sound generating device according to the above configuration, a positioning tool having a stopper piece is provided at a side of the impact sound generating body, and the impact sound generating body is provided on the stopper piece of the positioning tool. The impacting sound is generated in the floor portion to be measured by contacting the guide body in the moving body and adjusting the movement of the impact weight generator in the vertical direction of the falling weight body relative to the guide body. As described above, the present invention has an advantage that the drop height of the impact sound generator used for dropping can be adjusted easily and reliably to a height corresponding to the purpose of measurement.
[0108]
Further, in the continuous impact sound generating device according to the above configuration, the cam means includes a plate cam provided on a rotating shaft, and the plate cam is slidably contacted with a sliding contact portion of the impact sound generating body. A push-up sliding contact edge provided so as to gradually move away from the center of the rotation shaft so as to push up the impact sound generating body upward, and a drop movement of the impact sound generating body pushed up by the push-up sliding contact edge The impact sound generator constituting the continuous impact sound generator is provided with an edge provided so as to approach the rotary shaft side from the push-sliding contact edge so as to enable And having the advantage that the raised impact sound generator can be dropped so as to reliably generate a collision impact sound on the floor to be measured.
[0109]
Further, in the continuous impact sound generating device according to the above configuration, the push-up sliding contact edge that slides on the sliding contact portion of the impact sound generating body in the plate cam and pushes the impact sound generating body upward is based on the involute curve. By using the sliding contact edge as described above, there is an advantage that the impact sound generator constituting the continuous impact sound generator can be pushed up so that the vibration accompanying the push-up is not generated as much as possible.
[0110]
Further, in the continuous impact sound generating device according to the above configuration, a gantry including the impact sound generating body and the cam means has three or more support legs, and the support legs are configured to be adjustable in length. The fall height of the impact sound generator that is used so as to generate a collision impact sound on the floor to be measured is adjusted to the height corresponding to the measurement purpose at any time by adjusting the length of the support leg. Has the advantage that it can.
[0111]
Further, in the continuous impact sound generating device according to the above configuration, the gantry provided with the impact sound generator and the cam means has three or more support legs, and the support legs have elastic spherical leg seats. In this continuous impact sound generator, it is possible to effectively block the vibration generated in the gantry from being transmitted to the floor to be measured due to the pushing-up and dropping impact of the impact sound generator. There is an advantage that the drop impact sound can be accurately measured without relatively separating the space between the sound generator and the drop position.
[0112]
Further, in the continuous impact sound generator according to the above configuration, the gantry including the impact sound generator and the cam means has three or more support legs, and at least one of the support legs is attached to the gantry. In this way, when the continuous impact sound generator is used, the support interval by the support legs in the gantry is separated from each other by using the configuration provided on the distal end side of the arm that is rotatably provided on the vertical axis. It is possible to set the continuous impact sound generating device, and further, it has the advantage that the device can be transported, stored, etc. by reducing the interval between the support legs in the gantry.
[Brief description of the drawings]
FIG. 1 is a plan view showing a use state of a continuous impact sound generator according to a typical embodiment;
FIG. 2 is a plan view of the arm folded.
FIG. 3 is a front view of the same use state.
FIG. 4 is a side view showing a part of the use state omitted.
FIG. 5 is a longitudinal sectional view showing a state in which the impact sound generator B is pushed up as viewed from the side.
FIG. 6 is a longitudinal sectional view showing a state in which the impact sound generator B is dropped as viewed from the side.
FIG. 7 is a longitudinal sectional view showing a state in which the impact sound generator B is supported by a positioning tool when viewed from the side.
[Explanation of symbols]
Y Continuous impact sound generator
A frame
B Impact sound generator
C cam means
E Positioning tool
12 arms
16 Support legs
17 Leg seat
20 Guide body
40 plate cam
40a Push-up sliding contact
40c edge
41 Rotating shaft
42 Sliding contact edge

Claims (9)

A pair of impact sound generators that are freely movable up and down;
A pair of cam means for raising the respective impact sound generators upward and releasing the push-up to cause the impact sound generators to fall and to produce a collision impact sound on the floor to be measured. ,
The impact sound generator includes a guide body and a drop weight body provided at a lower portion of the guide body so as to be movable and adjustable with respect to the guide body in the vertical direction. A continuous impact sound generating device characterized in that the height position of the lower end of the falling weight body in the impact sound generating body pushed up by the cam means can be adjusted .   A positioning tool is provided on the side of the impact sound generator so as to be able to rotate a stopper piece. The guide body of the impact sound generator is brought into contact with the stopper piece of the positioning tool to generate the impact sound. 2. The continuous impact sound generating device according to claim 1, wherein movement adjustment of the falling weight body with respect to the guide body in a body is performed in a vertical direction. A pair of impact sound generators that are freely movable up and down;
A pair of cam means for raising the respective impact sound generators upward and releasing the push-up to cause the impact sound generators to fall and to produce a collision impact sound on the floor to be measured. ,
The cam means has a plate cam provided on the rotation shaft, and the plate cam rotates so as to slide on the sliding contact portion of the impact sound generator and push the impact sound generator upward. The lifted sliding contact edge provided so as to gradually move away from the center of the shaft, and the impacting sound generating body pushed up by the lifted sliding contact edge from the lifted sliding contact edge so as to be allowed to fall. A continuous impact sound generating device comprising: an edge provided so as to approach toward the rotating shaft .   The sliding contact edge formed by an involute curve is formed by an upward sliding contact edge that slides on the sliding contact portion of the impact sound generator in the plate cam and pushes the impact sound generator upward. 4. The continuous impact sound generator according to 3.   2. The pair of cam means are configured to alternately push up the pair of impact sound generators upward and release the push-up to alternately drop the impact sound generators. The continuous impact sound generator according to claim 2, claim 3, or claim 4.   The continuous impact sound according to claim 1, 2, 3, 4, or 5, wherein an adjustment weight can be detachably attached to the impact sound generator. Generator.   The gantry comprising the impact sound generator and the cam means has three or more support legs, and the support legs are adjustable in length. The continuous impact sound generator according to claim 4, claim 5, or claim 6.   The gantry comprising the impact sound generator and the cam means has three or more support legs, and the support legs have elastic spherical body seats. The continuous impact sound generator according to claim 3, 4, 5, 6, or 7.   A gantry provided with the impact sound generator and the cam means has three or more support legs, and at least one support leg of the support legs is provided so as to be rotatable about a vertical axis with respect to the gantry. The continuous arm according to claim 1, 2, 3, 4, 5, 6, 7, or 8. Impact sound generator.

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