JP2019165916A - Vibration generation device - Google Patents

Abstract

To cause a user to accurately recognize a vibration generation position.SOLUTION: A vibration generation device 1 includes a cushion part 10 having a contact face 10a, a vibration transmission member 30 for generating vibration in a body part 33 on the basis of vibration input from an outside and developing the vibration on the contact face 10a, and vibration output means 20 for outputting the vibration in an extension direction of the body part 33 to the vibration transmission member 30. A dividing part 40 is provided inside the cushion part 10 for dividing cushion parts U1 and U3 having sections S1 and S3 for causing a user to feel the vibration on the contact surface 10a from a cushion part U2 having a section S2 for not causing the user to feel the vibration. The dividing part 40 is low in vibration transmission properties as compared with an elastic member constituting the cushion part 10.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a vibration generating device, and more particularly to a vibration generating device that allows a user seated on a contact surface of a cushion portion to experience vibration by generating vibration in a vibration transmitting member provided in the cushion portion.

  2. Description of the Related Art Conventionally, a vibration generating device has been proposed in which a vibration transmission member is installed horizontally on a seat surface portion of a seat, and vibration is transmitted to the user in a horizontal direction via the vibration transmission member so that the user can feel the vibration. (For example, refer to Patent Document 1). In this vibration generator, in order to transmit the vibration to the vibration transmitting member in the horizontal direction, even when the seat surface portion moves up and down as the vehicle travels, like a seat installed in the vehicle, It is possible to effectively vibrate the seating surface portion.

  In addition, an alarm device in which the above-described vibration generating device is installed in, for example, the right side portion and the left side portion of the seat has been proposed. When the traveling vehicle crosses the left lane boundary line, vibration is generated by a vibration generating device installed on the left side portion of the seat. This vibration can inform the user (driver) that he has crossed the left lane boundary. Similarly, when the traveling vehicle straddles the right lane boundary, the vibration is generated by the vibration generator installed in the right part of the seat, and the user straddles the lane boundary on the right side of the vehicle. Is notified.

  As described above, the vibration generation position can be changed by installing the vibration generators in a plurality of portions of the seat. The user can easily determine the difference in the contents of the notification depending on the position where the vibration is experienced.

JP 2017-19386 A

  As described above, when a plurality of vibration generators are installed on the seat and the vibration generation position is changed, the vibration may be transmitted to the entire sheet, and the user may not recognize the vibration generation position. Can occur. For example, when a vibration generator is installed at the left and right positions of the seat surface portion of the seat, even if vibration is generated by the vibration transmitting member installed on the right side of the seat surface portion, the vibration is transmitted to the entire seat surface portion, The user may not be able to accurately recognize the position where the vibration is generated.

  In particular, when the vibration generating device is installed on the seating surface portion, the user needs to recognize the vibration at the buttocks where the vibration recognition sensitivity is not necessarily high. For this reason, in the process in which the vibration generated at either the left or right position of the seating surface part is transmitted to the entire seating surface part, it is not easy to clearly determine the vibration generation position at either the left or right collar part, There is a problem that it is difficult to accurately determine the occurrence position of the occurrence of the problem.

  This invention is made | formed in view of the said subject, and makes it a subject to provide the vibration generator which a user can recognize correctly the generation | occurrence | production position of a vibration.

  In order to solve the above problems, a vibration generator according to the present invention has a cushion portion having an abutment surface and a main body portion extending inside the cushion portion, and is based on vibration input from the outside. A vibration transmission member that generates vibrations in the main body part and causes the contact surface to generate vibrations, and a vibration output unit that outputs vibrations in the extending direction of the main body part to the vibration transmission member. A partition portion for partitioning the cushion portion into a cushion portion having a portion of the contact surface that allows the user to experience the vibration and a cushion portion having a portion of the contact surface that does not experience the vibration. The partition portion is provided inside the cushion portion, and has a vibration transmission property lower than that of an elastic member constituting the cushion portion.

  In the vibration generating device according to the present invention, a classification for dividing the cushion part into a cushion part having a contact surface part that allows the user to experience vibration and a cushion part having a contact surface part that does not allow vibration to be experienced. Parts are provided. The vibration transmissibility of the division part is lower than that of the elastic member constituting the cushion part. For this reason, even if it is a case where the vibration generate | occur | produced with the vibration transmission member is transmitted via the elastic member which comprises a cushion part, reduction of a vibration can be aimed at in a division part. Therefore, it is possible to cause vibration to appear in the portion of the contact surface that allows the user to experience vibration while preventing the vibration from appearing in the portion of the contact surface that does not allow the user to experience vibration.

  Further, in the vibration generating device described above, the partitioning portion of the vibration transmitting member has a direction from the installation position of the main body portion to the cushion portion having the portion of the contact surface that does not experience the vibration. When the contour is virtually projected, it may be provided inside the cushion portion so as to block the contour.

  In the vibration generating device according to the present invention, the dividing portion virtually defines the contour of the vibration transmitting member from the installation position of the vibration transmitting member to the direction facing the cushion portion having a contact surface portion that does not allow the user to experience vibration. When projected, the cushion portion is provided so as to block its contour, so that the vibration generated by the vibration transmitting member can be effectively reduced by the partitioning portion.

  Furthermore, in the vibration generating device described above, both end portions of the partition portion are extended from the contact surface of the cushion portion to the back surface of the cushion portion that is the opposite surface of the contact surface, and further, the back surface side. The end portion of the cushion portion may be bent and stretched, and the back surface of the cushion portion may be covered by the stretched segment portion.

  In the vibration generating device according to the present invention, since the dividing portion is provided from the contact surface to the back surface of the cushion portion, the vibration generated by the vibration transmitting member can be effectively reduced by the dividing portion.

  Furthermore, since the back surface of the cushion portion is covered with the partition portion, vibrations that enter from the back surface side of the cushion portion can be reduced by the partition portion. For this reason, it can prevent that the vibration from the outside is transmitted to the contact surface of the cushion part, and the user can experience the vibration generated by the vibration transmitting member more effectively on the contact surface. It becomes possible.

  Moreover, in the vibration generator described above, the first urethane is used as the elastic member constituting the cushion portion, and the second urethane containing more bubbles than the first urethane is used as the dividing portion. It may be.

  In the vibration generator according to the present invention, the second urethane constituting the section may be a urethane containing more bubbles than the first urethane constituting the cushion portion, so the second urethane is more than the first urethane. Inferior in vibration transmission, it becomes possible to effectively reduce vibration at the section.

  Furthermore, in the vibration generating apparatus described above, the partition portion may be a hollow space formed inside the cushion portion.

  In the vibration generator according to the present invention, the partitioning portion may be a hollow space formed inside the cushion portion, and therefore vibration transmission is inferior to the elastic member constituting the cushion portion. The vibration can be effectively reduced at the portion.

  In the vibration generating device according to the present invention, a classification for dividing the cushion part into a cushion part having a contact surface part that allows the user to experience vibration and a cushion part having a contact surface part that does not allow vibration to be experienced. The part is provided inside the cushion part. The vibration transmissibility of the division part is lower than that of the elastic member constituting the cushion part. For this reason, even if it is a case where the vibration generate | occur | produced with the vibration transmission member is transmitted via the elastic member which comprises a cushion part, reduction of a vibration can be aimed at in a division part. Therefore, it is possible to cause vibration to appear in the portion of the contact surface that allows the user to experience vibration while preventing the vibration from appearing in the portion of the contact surface that does not allow the user to experience vibration.

It is the top view which showed only the cushion part of the sheet | seat in which the vibration generator which concerns on Embodiment 1 was installed in the partial cross section. It is the side view which showed only the cushion part of the sheet | seat in which the vibration generator which concerns on Embodiment 1 was installed in the partial cross section, Comprising: It is the figure which showed the YY cross section of the sheet | seat shown in FIG. 1 from the arrow direction. . (A) is the side view which showed the exciter and vibration transmission member which concern on Embodiment 1, (b) is a front view. It is sectional drawing of the cushion part of the sheet | seat in which the vibration generator which concerns on Embodiment 1 was installed, Comprising: It is the figure which showed the XX cross section of the sheet | seat shown in FIG. 1 from the arrow direction. (A)-(c) is sectional drawing which showed the other example of the cushion part which concerns on Embodiment 1. FIG. (A) is the top view which showed the partial cross section of the sheet | seat in which the vibration generator concerning Embodiment 2 was installed, (b) is an XX cross section of the cushion part shown to (a) in the arrow direction. It is sectional drawing shown from. (A) And (b) is sectional drawing which showed the other example of the cushion part which concerns on Embodiment 2. FIG. (A) is the top view which showed the partial cross section of the sheet | seat in which the vibration generator concerning other embodiment was installed, (b) is XX cross section of the cushion part shown to (a) by the arrow It is sectional drawing shown from the direction.

  Hereinafter, an example of a vibration generator according to the present invention will be shown and described in detail with reference to the drawings. FIG. 1 is a plan view showing, in partial section, only the seat surface portion of the seat on which the vibration generator 1 is installed, and FIG. 2 is a side view. As shown in FIG. 1, two vibration generators 1 are installed on the left and right objects on the seat surface portion 201 of the seat 200. The vibration generator 1 includes a cushion portion 10, an exciter (vibration output means) 20, and a vibration transmission member 30. The seat 200 is installed in the vehicle.

[Cushion part]
The cushion part 10 constitutes a seating surface part 201 of the seat 200. The cushion portion 10 serves as a contact portion with the user seated on the seat 200 and allows the user to experience vibration generated by the vibration transmitting member 30. The seating surface (upper side surface) on which the user sits in the cushion portion 10 is referred to as a contact surface 10a. Further, the seating surface (lower surface) opposite to the contact surface 10a in the cushion portion 10 is referred to as a back surface 10b.

  The cushion portion 10 includes an elastic member such as urethane and a trim cover that covers the elastic member. The trim cover is formed by sewing a plurality of skin pieces cut according to the uneven shape of the cushion portion 10, and the outer surface of the cushion portion 10 is formed by the trim cover. As the skin piece, for example, leather or fabric is used.

  The urethane constituting the cushion part 10 is referred to as a first urethane for convenience of explanation. The first urethane supports the user seated on the seat surface portion 201 and has a role of reducing vehicle body vibration transmitted to the seat surface portion 201 during traveling of the vehicle due to its elasticity. Since the seat surface portion 201 is composed of the first urethane of the cushion portion 10, even if the user sits on the seat surface portion 201 (cushion portion 10), there is no possibility that the user will feel uncomfortable.

[Vibration transmission member]
FIG. 3A is a side view showing the exciter 20 and the vibration transmitting member 30 of the vibration generator 1, and FIG. 3B is a front view. As shown in FIG. 3A, the vibration transmitting member 30 has a rod shape with its end bent into an L shape. The vibration transmission member 30 has a main body portion 33 made of a rod-shaped body and a bent portion 32 constituting a portion bent at an end portion of the main body portion 33. The main body portion 33 and the bent portion 32 of the vibration transmitting member 30 are integrally formed of a metal that easily transmits vibration.

  As shown in FIGS. 1 and 2, the vibration transmitting member 30 is installed (extended) in the cushion portion 10 such that the main body portion 33 is substantially horizontal with respect to the front-rear direction of the seat surface portion 201. As described above, since the two vibration generators 1 (however, the cushion portion 10 is common) are installed on the left and right sides with respect to the seat surface portion 201, the vibration transmitting member 30 and the exciter 20 are also included in the cushion portion 10. Two are provided in the interior so as to be symmetrical.

  As a method of installing the vibration transmission member 30 in the cushion portion 10, for example, the cushion portion 10 can be insert-molded with the vibration transmission member 30 disposed therein. Alternatively, after the cushion portion 10 is molded, an insertion hole for inserting the vibration transmission member 30 is formed in the cushion portion 10, and after the vibration transmission member 30 is inserted, it is fixed to the cushion portion 10 with an adhesive or the like. be able to.

  In the vibration generator 1 according to the embodiment, as illustrated in FIGS. 3A and 3B, the vibration transmission member 30 having a rod shape whose end is bent into an L shape will be described as an example. However, the shape of the vibration transmitting member 30 is not limited to this shape. The shape of the vibration transmission member 30 is not particularly limited as long as the rod-like body portion 33 is extended inside the cushion portion 10. For example, it may be a simple bar shape whose end is not bent into an L shape. Further, the end of the bent portion 32 constituting the vibration transmitting member 30 may be further folded back to form a crank shape. Moreover, the cross-sectional shape of the vibration transmission member 30 is not particularly limited, and may be, for example, a circle or a polygon.

  Furthermore, in the vibration generator 1 according to the embodiment, a case where the vibration transmission member 30 is formed of a metal or the like that easily transmits vibration will be described as an example. However, the material is not limited as long as vibration can be transmitted in the extending direction of the main body portion 33. Various members can be used as the vibration transmitting member 30 as long as the members can transmit vibration in the extending direction of the main body 33.

[Exciter]
The exciter 20 outputs a vibration based on a signal received from a sound source device (not shown) and transmits the vibration to the vibration transmitting member. In general, the exciter 20 outputs sound and vibration by applying vibration to the flat panel or the like while attached to the flat panel or the like. The exciter has a structure in which vibration transmitted from the voice coil is transmitted to the surface of a flat panel or the like to which the exciter is attached, using inertial force generated by acting on the mass (weight) of the exciter itself. Since the detailed structure and the like of the exciter are already well-known techniques (see, for example, Japanese Patent Application Laid-Open No. 2017-019386), detailed description in this embodiment is omitted.

  The exciter 20 is attached to the front side surface portion of the bent portion 32 of the vibration transmitting member 30, more specifically, to the side surface portion that is the front surface with reference to the extending direction of the main body portion 33. As described above, the vibration transmitting member 30 is installed in the cushion portion 10 such that the main body portion 33 is substantially horizontal with respect to the front-rear direction of the seat surface portion 201. Therefore, the front side surface portion in the bent portion 32 constitutes a vertical surface. Since the exciter 20 is installed on the front side surface portion of the bent portion 32 that forms a vertical surface, when vibration is output from the exciter 20, vibration input to the vibration transmitting member 30 via the bent portion 32 is 33 is transmitted in the extending direction. As described above, since the vibration in the horizontal direction is input from the exciter 20 to the vibration transmitting member 30, even when a traveling vibration in the vertical direction is generated as the vehicle travels, the vibration by the exciter 20 is generated. By transmitting in the left-right direction, the user sitting on the seat surface portion 201 can be surely experienced.

  Next, the structure of the cushion part 10 in which the vibration transmission member 30 was installed is demonstrated in detail.

[Embodiment 1]
1, 2, 3 (a), 3 (b), and 4 show a vibration generator 1 according to the first embodiment. Two partition members (partition portions) 40 are provided inside the cushion portion 10 of the vibration generator 1. The sorting member 40 is provided to classify a position where a user seated on the contact surface 10 a of the cushion portion 10 feels vibration generated by the vibration transmitting member 30. For example, the S1 range shown in FIG. 4 corresponds to a part where the user feels vibration in the left part of the contact surface 10a, and the S2 range corresponds to a part where the user does not feel vibration in the contact surface 10a. The range corresponds to a portion that allows the user to feel vibration in the right portion of the contact surface 10a. In order for the user to feel the vibration generated from the vibration transmitting member 30 provided on the cushion portion 10 on the contact surface 10a of the cushion portion 10 only in the S1 range or the S3 range, the vibration is generated inside the cushion portion 10. It is necessary to prevent transmission to the S2 range. For this reason, the division member 40 of the vibration generator 1 according to the first embodiment has a plate shape and is installed inside the cushion portion 10 so as to separate the inside of the cushion portion 10.

  The partition member 40 is a second urethane having a lower vibration transmission than the first urethane constituting the cushion portion 10 (the first urethane U1, the first urethane U2, and the first urethane U3 described later are integrally formed). It is constituted by. For example, urethane having a structure (air layer) containing more bubbles than the first urethane corresponds to the second urethane having low vibration transmission. Since both the first urethane and the second urethane are materials constituting the cushion portion 10, the first urethane and the second urethane are provided with elasticity (cushioning property, shock absorption property) so as not to give discomfort when the user is seated. For both the first urethane and the second urethane, a sponge material such as urethane foam is often used as an example, and bubbles are formed in the urethane in order to achieve elasticity. By making the air bubbles formed in the second urethane more than the air bubbles formed in the first urethane, the vibration transmission property of the urethane can be lowered.

  In addition, the force of pushing back is strong and the property of being easy to return to the original shape is strong. The urethane with high rebound resilience has lower vibration transmissibility and lowers the resonance frequency than urethane with low rebound resilience. Has characteristics. For this reason, the vibration transferability of the second urethane can be made lower than that of the first urethane by increasing the resilience of the second urethane over that of the first urethane.

  Furthermore, it has a structure in which bubbles communicate, and when external pressure is removed from the compressed state, it slowly returns to its original shape. It is large (vibration converges quickly) and has high vibration absorption performance. For this reason, by increasing the viscosity of the second urethane over the viscosity of the first urethane, the vibration transferability of the second urethane can be made lower than that of the first urethane.

  Further, the vibration transmissibility τ can be used as an index indicating whether the vibration transmissibility is high or low. The vibration transmissibility τ indicates a value obtained by dividing the transmission force F1 transmitted to the vibrating body by the excitation force F0 generated by the vibration source. When the vibration transmissibility τ is less than 1 (τ <1), the vibration is reduced. For example, if an external force output from the exciter 20 serving as a vibration source to the vibration transmission member 30 is F0, and a force transmitted from the vibration transmission member 30 to the contact surface 10a of the cushion portion 10 serving as a vibration body is F1, vibration is generated. The transmission rate τ can be obtained by τ = F1 / F0. This vibration transmissibility τ can indicate the anti-vibration performance (vibration insulation performance) of urethane. The anti-vibration performance refers to the performance of reflecting vibration waves to reduce transmission vibration. The higher the anti-vibration performance, the lower the vibration transmission performance. Urethane with higher vibration proof performance has lower vibration transmission than urethane with lower vibration proof performance. For this reason, the vibration transmission property of 2nd urethane can be made lower than 1st urethane by raising the vibration proof performance of 2nd urethane rather than the vibration proof performance of 1st urethane.

  Further, the vibration damping performance can be used as an index indicating whether the vibration transmission is high or low. The vibration damping performance is a performance that reduces vibration by absorbing vibration energy as thermal energy. Urethane with higher vibration damping performance has lower vibration transmission than urethane with lower vibration damping performance. For this reason, the vibration transmission performance of the second urethane can be made lower than that of the first urethane by increasing the vibration damping performance of the second urethane over that of the first urethane.

  Furthermore, it is possible to determine whether the vibration transmission performance is high or low based on the vibration absorption performance. The vibration absorbing performance is the performance of absorbing vibration by using a vibration absorbing material and reducing the vibration. Urethane with high vibration absorption performance has lower vibration transmission than urethane with low vibration absorption performance. For this reason, the vibration transmissibility of 2nd urethane can be made lower than 1st urethane by raising the vibration absorption performance of 2nd urethane rather than the vibration absorption performance of 1st urethane.

  In order to distinguish between the S1 range of the contact surface 10a that allows the user to experience vibrations and the S2 range of the contact surface 10a that does not allow vibrations to be experienced, the sorting member 40 includes the contact surface 10a as shown in FIG. It is installed between the first urethane U1 of the cushion part 10 having the S1 range and the first urethane U2 of the cushion part 10 having the S2 range of the contact surface 10a.

  Here, the 1st urethane U1 and the 1st urethane U2 are the same materials, and are the 1st urethane which constitutes cushion part 10 together. The dividing member 40 does not completely divide the first urethane U1 and the first urethane U2, but as shown in FIG. 4, between the first urethane U1 and the first urethane U2 forming an integral first urethane. And from the 1st urethane U2 side, it installs so that the main-body part 33 of the vibration transmission member 30 installed in the 1st urethane U1 may be shielded at least.

  Specifically, the vibration transmission member 30 is disposed on the first urethane U1 that is integrally formed so as to be adjacent to the first urethane U2, and the first urethane U2 faces the internal position of the vibration transmission member 30. When the contour of the vibration transmitting member 30 is virtually projected with respect to the direction (horizontal direction), at least the contour of the main body portion 33 is shielded by the partition member 40 so that the first urethane U1 and the first urethane U2 are interposed. A partition member 40 is provided.

  Further, in order to distinguish the S3 range of the contact surface 10a that allows the user to experience vibration and the S2 range of the contact surface 10a that does not experience vibration, the sorting member 40 is a cushion having the S3 range of the contact surface 10a. Between the first urethane U3 of the portion 10 and the first urethane U2 of the cushion portion 10 having the S2 range of the contact surface 10a.

  As shown in FIG. 4, the dividing member 40 does not completely divide the first urethane U2 and the first urethane U3, but between the first urethane U2 and the first urethane U3 that form an integral first urethane. And from the 1st urethane U2 side, it installs so that the main-body part 33 of the vibration transmission member 30 installed in the 1st urethane U3 may be shielded at least. Specifically, the vibration transmission member 30 is disposed on the first urethane U3 that is integrally formed so as to be adjacent to the first urethane U2, and the first urethane U2 faces the internal position of the vibration transmission member 30. When the vibration transmission member 30 is virtually projected with respect to the direction (horizontal direction), at least the outline of the main body portion 33 is blocked by the partition member 40 so that the partition is divided between the first urethane U2 and the first urethane U3. A member 40 is provided.

  The exciter 20 and the vibration transmitting member 30 indicated by a broken line in FIG. 2 are located in the direction of facing the first urethane U2 (horizontal direction) from the installation position of the exciter 20 and the vibration transmitting member 30 in the first urethane U3. And the outline at the time of carrying out the virtual projection of the vibration transmission member 30 is shown. As shown in FIG. 2, the division member 40 is provided between the first urethane U2 and the first urethane U3 so as to block at least the outline of the main body portion 33 of the vibration transmission member 30.

  As an example of a construction method of the vibration generator 1 shown in FIG. 4, when forming the cushion portion 10, the vibration transmitting member 30 is fixed in advance at a predetermined position of the first urethane molding die, and the first urethane is used as the primary material. Then, the second urethane corresponding to the sorting member 40 is molded so as to be integrated with the first urethane.

  As described above, the partition member 40 blocks the projection contour (at least the projection contour of the main body 33) of the vibration transmission member 30 that is virtually projected in the direction facing the first urethane U2 from the position where the vibration transmission member 30 is provided. Installed. For this reason, it is preferable that the length of the dividing member 40 in the extending direction is longer than the length of the vibration transmitting member 30 in the extending direction. Moreover, it is preferable that the vertical length of the dividing member 40 is longer than the vertical length of the vibration transmitting member 30. Further, it is preferable that the arrangement position of the partition member 40 is a position close to the vibration transmission member 30.

  In FIG. 1, FIG. 2, and FIG. 4, the dimension (length) A1 in the extending direction and the dimension (length) B1 in the up-down direction are shown as examples of the dimensions of the dividing member 40. The dimension A1 in the extending direction of the dividing member 40 shown in FIG. 1 is slightly longer than the combined length of the vibration transmitting member 30 and the exciter 20. 2 is slightly longer than the length (depth) from the contact surface 10a of the cushion portion 10 to the lower surface of the main body portion 33 of the vibration transmitting member 30. Further, FIG. 1 shows a case where the sorting member 40 is arranged at a position close to the vibration transmission member 30.

  As shown in FIGS. 1, 2, and 4, vibration is input from the exciter 20 in a state where the partition member 40 is provided in the first urethane (between the first urethane U1 and the first urethane U2). When vibration is generated in the entire vibration transmission member 30, the vibration propagated to the first urethane U1 is expressed in the S1 range of the contact surface 10a. Further, when the vibration propagated to the first urethane U1 is transmitted to the sorting member 40, the vibration is reduced in the sorting member 40. Therefore, the vibration is not transmitted to the S2 range of the contact surface 10a of the first urethane U2, and vibration is generated. Is not expressed.

  In particular, the dividing member 40 blocks the projection contour (at least the projection contour of the main body portion 33) of the vibration transmission member 30 that is virtually projected in the direction facing the first urethane U2 from the internal position of the vibration transmission member 30. It is installed inside the cushion part 10. Therefore, even if vibration is generated from the vibration transmission member 30, the vibration is blocked by the dividing member 40 in the process of transmitting the vibration from the vibration transmission member 30 to the first urethane U1, and the vibration is effectively suppressed. be able to.

  For this reason, even if a user may experience vibration in the S1 range of the contact surface 10a, it is possible to prevent the user from experiencing vibration in the S2 range.

  Similarly, when vibration is input from the exciter 20 to the vibration transmission member 30 installed in the first urethane U3 and vibration is generated in the entire vibration transmission member 30, vibration generated in the vibration transmission member 30 is generated. Is transmitted to the first urethane U3, and vibration is generated in the S3 range of the contact surface 10a. Moreover, since the vibration generated by the vibration transmitting member 30 and transmitted to the first urethane U3 is reduced in the sorting member 40, no vibration is generated in the S2 range of the contact surface 10a of the first urethane U2. For this reason, even if the user feels vibration in the S3 range of the contact surface 10a, it is possible to prevent the user from experiencing vibration in the S2 range.

  1, 2, and 4, the shape of the partition member 40 is a plate that is longer than the length of the vibration transmission member 30 in the extending direction and longer than the length (depth) of the vibration transmission member 30 in the vertical direction. The explanation was given by showing the shape. However, if the vibration transmitted from the first urethane U1 to the first urethane U2 can be reduced by the sorting member 40 or the vibration transmitted from the first urethane U3 to the first urethane U2 can be reduced, the size of the sorting member 40 is reduced. (The length in the stretching direction, the length in the upper and lower directions, the width, etc.) is not particularly limited. In addition, it is more effective for the vibration transmitting member 30 to install the dividing member 40 at a relatively short distance from the vibration transmitting member 30 (or to install the vibration transmitting member 30 relatively close to the dividing member 40). The divided member 40 can reduce the generated vibration, but the arrangement distance between the vibration transmitting member 30 and the dividing member 40 is not particularly limited as long as it is a positional relationship in which the dividing member 40 can reduce the vibration. .

  Furthermore, the user who sits on the contact surface 10a of the cushion part 10 includes a first urethane (first urethane U1, first urethane U2, first urethane U3) and a partition member 40 (second urethane) constituting the cushion part 10. If it is difficult to obtain a suitable seating comfort due to the difference in elasticity and the like, the first urethane should be interposed between the contact surface 10a and the end of the partition member 40 on the contact surface 10a side. Thus, it is preferable to provide the partition member 40 in the cushion portion 10. By installing the dividing member 40 in this manner, a user sitting on the contact surface 10a of the cushion portion 10 can experience a suitable sitting comfort.

  Moreover, arrangement | positioning etc. of the division member 40 installed in the 1st urethane of the cushion part 10 are not limited to an arrangement | positioning state as shown in FIG. For example, as shown in FIG. 5 (a), only one of the two partition members 40 shown in FIG. 4 may be provided inside the cushion portion 10 (for example, the central portion in the left-right direction). Good. As described above, when only one sorting member 40 is provided in the cushion portion 10 and the vibration of the vibration transmitting member 30 is transmitted to urethane on one side of the sorting member 40 in the cushion portion 10. Even so, since the vibration is reduced by the sorting member 40, it is possible to suppress the vibration from being transmitted to the urethane on the other side of the sorting member 40.

  Further, for example, as shown in FIG. 5B, both end portions of the partition member 40 extend from the contact surface 10a of the cushion portion 10 to the back surface 10b, and divide the first urethane of the cushion portion 10 into two. It may be a structure. As described above, the division member 40 is provided in the cushion portion 10 so as to divide the first urethane of the cushion portion 10 into two parts, so that the vibration is transmitted by the urethane on one side of the cushion portion 10. Moreover, since the vibration transmitted by the division member 40 is reduced, it can suppress that a vibration is transmitted to the urethane of the other side of the cushion part 10. FIG.

  Further, as shown in FIG. 5 (c), the end portion of the dividing member 40 extending from the contact surface 10a to the back surface 10b of the cushion portion 10 is bent so that the cross section is L-shaped (or reverse L-shaped). The partition member 40 may be installed on the cushion portion 10 so that the vibration transmitting member 30 and the exciter 20 are covered (hidden) from the back surface 10b of the cushion portion 10 by the bent end portions. Thus, by covering the first urethane provided with the exciter 20 and the vibration transmitting member 30 from below with the second urethane of the partition member 40, the vibration that enters from the back surface 10b side of the cushion portion 10 is prevented. Can be alleviated. For this reason, it can prevent that the vibration from the outside transmits to the contact surface 10a of the cushion part 10, and the vibration generated from the vibration transmission member 30 is more effectively transmitted by the contact surface 10a. It is possible for the user to experience it.

[Embodiment 2]
In the vibration generator 1 according to the first embodiment, the case where the cushion member 10 is provided with the partition member 40 made of the second urethane has been described. However, the division member 40 is not necessarily limited to the second urethane as described in the first embodiment.

  Any structure may be used as long as the vibration of the vibration transmitting member 30 provided in the cushion portion 10 (first urethane U1) corresponding to the S1 range of the contact surface 10a is not transmitted to the first urethane U2, and the contact surface 10a. Any structure may be used as long as the vibration of the vibration transmitting member 30 provided in the cushion portion 10 (first urethane U3) corresponding to the S3 range is not transmitted to the first urethane U2.

  The vibration generator 1a according to Embodiment 2 is characterized in that the partition member 40 of the vibration generator 1 described in Embodiment 1 is a hollow space. Specifically, the partition member 40 of the vibration generator 1 shown in FIGS. 1, 2 and 4 is replaced with a slit (partition portion) 42 as shown in FIGS. A hollow space is formed inside the portion 10.

  6 (a) and 6 (b), the cushion portion 10 of the vibration generator 1a according to the second embodiment is similar to the cushion portion 10 of the vibration generator 1 according to the first embodiment. , S2 range and S3 range, and the first urethane of the cushion portion 10 corresponding to each range is defined as a first urethane U1, a first urethane U2, and a first urethane U3. The slit 42 is formed between the first urethane U1 and the first urethane U2 and between the first urethane U2 and the first urethane U3. Since the slit 42 is a hollow space, vibration transmission is inferior to general urethane or the like (first urethane or the like).

  Further, similarly to the partition member 40, the slit 42 is a projected contour of the vibration transmitting member 30 that is virtually projected in a direction facing the first urethane U <b> 2 from the internal position of the vibration transmitting member 30 (at least a projected contour of the main body portion 33). Is formed inside the cushion portion 10.

  For this reason, the vibration of the vibration transmitting member 30 provided in the first urethane U1 is reduced by the slit 42 and is not transmitted to the first urethane U2. Therefore, the vibration of the vibration transmitting member 30 provided on the first urethane U1 is experienced by the user in the S1 range of the contact surface 10a, but not experienced by the user in the S2 range of the contact surface 10a.

  Similarly, the vibration of the vibration transmitting member 30 provided in the first urethane U3 is reduced by the slit 42 and is not transmitted to the first urethane U2. Therefore, the vibration of the vibration transmitting member 30 provided on the first urethane U3 is experienced by the user in the S3 range of the contact surface 10a, but is not experienced by the user in the S2 range of the contact surface 10a.

  FIGS. 6A and 6B show a dimension (length) A2 in the stretching direction and a dimension (length) B2 in the vertical direction as examples of the dimensions of the slit 42. FIG. The slit 42 shown in FIG. 6 (a) has a slightly smaller dimension A2 in the extending direction than the combined length of the vibration transmitting member 30 and the exciter 20, similarly to the dividing member 40 shown in FIGS. long. In the slit 42 shown in FIG. 6B, the dimension B2 in the vertical direction of the slit 42 is slightly smaller than the length (depth) from the contact surface 10a of the cushion portion 10 to the lower surface of the vibration transmitting member 30. long. FIG. 6A shows a case where the slit 42 is formed at a position close to the vibration transmitting member 30.

  The slit 42 can reduce the vibration transmitted from the first urethane U1 to the first urethane U2, or the size (if the vibration transmitted from the first urethane U3 to the first urethane U2 can be reduced). The length in the stretching direction, the upper and lower lengths, the width, etc.) are not particularly limited. In addition, the slit 42 is formed at a distance relatively close to the vibration transmission member 30 (or the vibration transmission member 30 is installed relatively close to the slit 42). Although the vibration can be reduced by the slit 42, the arrangement distance between the vibration transmission member 30 and the slit 42 is not particularly limited as long as the positional relationship can reduce the vibration by the slit 42.

  Moreover, the vibration generator 1a according to the second embodiment has a structure in which only one slit 42 is formed inside the cushion portion 10 (for example, the central portion in the left-right direction) as shown in FIG. 7A, for example. It may be. In this way, only one slit 42 is provided in the cushion portion 10 and the vibration of the vibration transmitting member 30 is transmitted to the urethane on one side of the slit 42 in the cushion portion 10. However, since the vibration is reduced by the slit 42, it is possible to suppress the vibration from being transmitted to the urethane on the other side of the slit 42.

  Further, in the vibration generator 1a, as shown in FIG. 7B, the slit 42 formed in the cushion portion 10 is penetrated from the upper surface (contact surface 10a) to the lower surface (back surface 10b) of the cushion portion 10. It may be. In this way, since the urethane is completely separated by penetrating the slit 42, when the vibration is transmitted by the vibration transmitting member 30 with urethane on one side of the slit 42, the generated vibration is reduced. It can be reduced by the slit 42. For this reason, it is possible to prevent the vibration of the vibration transmitting member 30 from being transmitted to the urethane on the other side of the slit 42.

  In addition, when a user sitting on the contact surface 10a of the cushion portion 10 is difficult to obtain a suitable sitting comfort due to the slits 42 formed in the cushion portion 10, a suitable sitting comfort and effective vibration reduction performance are achieved. It is preferable to adjust the formation position of the slit 42 in the cushion part 10 as appropriate.

  As described above, in the vibration generator 1 according to the first embodiment, the S1 range or S3 range in which the user can feel vibration on the contact surface 10a and the S2 range in which vibration is not experienced are distinguished. A sorting member 40 is provided in the cushion portion 10. Further, the second urethane constituting the dividing member 40 is a urethane having lower vibration transmission than the first urethane constituting the cushion portion 10.

  For this reason, even if vibration is generated in the vibration transmitting member 30 provided in the first urethane U1 or the first urethane U3, the vibration to be transmitted to the first urethane U2 can be suppressed by the dividing member 40. Therefore, even if the user feels vibration in the S1 range or S3 range of the contact surface 10a, it is possible to prevent the user from experiencing vibration in the S2 range.

  In particular, the dividing member 40 blocks the projection contour (at least the projection contour of the main body portion 33) of the vibration transmission member 30 that is virtually projected in the direction facing the first urethane U2 from the internal position of the vibration transmission member 30. It is provided inside the cushion part 10. For this reason, the vibration which is going to transmit from the vibration transmission member 30 to 1st urethane U2 can be reduced more effectively by the division member 40. FIG.

  Similarly, in the vibration generator 1a according to the second embodiment, the slit for distinguishing the S1 range or S3 range in which the user can feel vibration on the contact surface 10a and the S2 range in which vibration is not felt by the user. 42 is formed inside the cushion portion 10. Further, the slit 42 formed of a hollow space has lower vibration transmission than the first urethane constituting the cushion portion 10.

  For this reason, even if vibration is generated in the vibration transmitting member 30 provided in the first urethane U1 or the first urethane U3, the vibration to be transmitted to the first urethane U2 can be suppressed by the slit 42. Therefore, even if the user feels vibration in the S1 range or S3 range of the contact surface 10a, it is possible to prevent the user from experiencing vibration in the S2 range.

  In particular, the slit 42 cushions the projection contour (at least the projection contour of the main body portion 33) of the vibration transmission member 30 that is virtually projected in the direction facing the first urethane U2 from the position where the vibration transmission member 30 is installed. It is formed inside the part 10. For this reason, the vibration to be transmitted from the vibration transmitting member 30 to the first urethane U2 can be more effectively reduced by the slit 42.

  Although the vibration generator according to the present invention has been described in detail with reference to the drawings, the vibration generator according to the present invention is not limited to the configurations shown in the first and second embodiments. For example, in the vibration generators 1 and 1a according to the first and second embodiments, the case where the cushion portion 10 constitutes the seat surface portion 201 of the seat 200 has been described. However, the cushion portion 10 is not necessarily limited to the seat surface portion 201. For example, the cushion portion 10 may correspond to the backrest portion 202 or the headrest portion 203 of the seat 200. Even if the cushion portion 10 corresponds to the backrest portion 202 or the headrest portion 203, the user can experience vibration on the contact surface 10a, and therefore the effects shown in the first and second embodiments Similar effects can be achieved.

  Furthermore, in the vibration generators 1 and 1a according to the first and second embodiments, the case where the two exciters 20 and the vibration transmitting member 30 are provided in the cushion portion 10 has been described. However, the vibration generator according to the present invention is not limited to a configuration in which the plurality of exciters 20 and the vibration transmission member 30 are provided in one cushion portion 10.

  FIGS. 8A and 8B are diagrams showing a case where only one set of exciters 20 and 30 is installed in the cushion portion 10. In FIG. 8B, the S1 range of the first urethane U1 in which the exciter 20 and the vibration transmitting member 30 are installed corresponds to a part that allows the user to feel vibration on the contact surface 10a. On the other hand, the S2 range of the first urethane U2 in which the exciter 20 and the vibration transmitting member 30 are not installed corresponds to a portion where the user does not feel vibration on the contact surface 10a. As described above, when there are a part (S1 range) in which vibration is experienced and a part (S2 range) in which vibration is not felt in the contact surface 10a of the cushion part 10, the division member 40 described in the first embodiment, or By providing or forming the slit 42 shown in the second embodiment in the cushion portion 10, the effects of the vibration generating device 1 described in the first embodiment and the vibration generating device 1a described in the second embodiment are provided. It is possible to produce an effect equivalent to the effect.

  Furthermore, in the vibration generators 1 and 1a according to the first and second embodiments, the exciter 20 is used as an example of means for outputting vibration to the vibration transmission member 30 (vibration output means). However, the means for outputting the vibration to the vibration transmitting member 30 is not limited to the exciter 20, and is configured to output vibration to the vibration transmitting member 30 using something other than the exciter 20. Also good.

DESCRIPTION OF SYMBOLS 1, 1a ... Vibration generator 10 ... Cushion part 10a ... Contact surface 10b (of cushion part) ... Back surface 20 (of cushion part) ... Exciter (vibration output means)
200 ... Seat 201 ... (Seat) seat portion 202 ... (Seat) backrest 203 ... (Seat) headrest 30 ... Vibration transmission member 32 ... Bending portion 33 (of vibration transmission member) ... (Vibration transmission member) Main body part 40: division member (section part)
42 ... slit (partition)

Claims (5)

A cushion having a contact surface;
A vibration transmission member having a main body portion extending inside the cushion portion, generating vibrations in the main body portion based on vibrations inputted from the outside, and expressing vibrations in the contact surface;
A vibration output means for outputting vibration to the vibration transmitting member in the extending direction of the main body,
A partition part for separating the cushion part into a cushion part having a part of the contact surface that allows the user to experience the vibration and a cushion part having a part of the contact surface that does not allow the user to experience the vibration, It is provided inside the cushion part,
The division generator has a vibration transmission property lower than that of an elastic member constituting the cushion portion. When the contour portion of the vibration transmission member is virtually projected from the installation position of the main body portion to the direction of facing the cushion portion having the portion of the contact surface that does not experience the vibration, The vibration generator according to claim 1, wherein the vibration generator is provided inside the cushion portion so as to block an outline. Both end portions of the partition portion are extended from the contact surface of the cushion portion to the back surface of the cushion portion, which is the opposite surface of the contact surface, and further, the end portion on the back surface side is bent and extended. The vibration generating device according to claim 1, wherein the back surface of the cushion portion is covered by the stretched partitioning portion. As the elastic member constituting the cushion portion, first urethane is used,
The vibration generating device according to any one of claims 1 to 3, wherein a second urethane containing more bubbles than the first urethane is used as the dividing portion. The vibration generating device according to any one of claims 1 to 3, wherein the partition portion is a hollow space formed inside the cushion portion.

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