Actuator

Abstract

An actuator contributes to improving the bonding strength between a viscoelastic member and a plate-shaped portion by a simple process. The utility model relates to an actuator, which comprises a supporting body, a connecting piece, a connecting piece and a connecting piece, wherein the supporting body is provided with a plate-shaped part; a movable body having a first portion, a second portion, and a connecting portion, the first portion and the second portion facing the plate-shaped portion on both sides of the plate-shaped portion in the thickness direction, respectively, the connecting portion connecting the first portion and the second portion; a first viscoelastic member that is in contact with the plate-like portion and the first portion, respectively, at a position where the plate-like portion and the first portion face each other; and a second viscoelastic member that is in contact with the plate-shaped portion and the second portion, respectively, at positions where the plate-shaped portion and the second portion face each other, in which a plurality of recesses are provided in at least portions where the plate-shaped portion is in contact with the first viscoelastic member and the second viscoelastic member.

Description

TECHNICAL FIELD

[0001] The utility model relates to an actuator. BACKGROUND

[0002] In the past, there is an actuator, comprising: a support body having a plate-shaped portion; a movable body having a first portion, a second portion and a connecting portion, the first portion and the second portion are respectively opposite to the plate-shaped portion on both sides in the thickness direction of the plate-shaped portion, the connecting portion connects the first portion and the second portion; a first viscoelastic component, which is in contact with the plate-shaped portion and the first portion at the position opposite to the plate-shaped portion and the first portion; and a second viscoelastic component, which is in contact with the plate-shaped portion and the second portion at the position opposite to the plate-shaped portion and the second portion.

[0003] In the above-mentioned actuator, sometimes the viscoelastic component is assembled to the end face of the plate-shaped body in the thickness direction, but in this way, in practice, there are cases where the viscoelastic component falls off from the plate-shaped body, and this situation becomes prominent when the end face of the plate-shaped body in the thickness direction is of metal material, therefore, how to improve the bonding strength between the viscoelastic component and the plate-shaped portion with a simple process becomes a problem to be solved. SUMMARY

[0004] The utility model is just completed in view of the above problem, the purpose is to provide an actuator, which helps to improve the bonding strength between the viscoelastic component and the plate-shaped portion with a simple process.

[0005] In order to achieve the above-mentioned purpose, the utility model provides an actuator, comprising: a support body having a plate-shaped portion; a movable body having a first portion, a second portion and a connecting portion, the first portion and the second portion are respectively opposite to the plate-shaped portion on both sides in the thickness direction of the plate-shaped portion, the connecting portion connects the first portion and the second portion; a first viscoelastic component, which is in contact with the plate-shaped portion and the first portion at the position opposite to the plate-shaped portion and the first portion; and a second viscoelastic component, which is in contact with the plate-shaped portion and the second portion at the position opposite to the plate-shaped portion and the second portion, wherein, on the plate-shaped portion, at least in the part in contact with the first viscoelastic component and the second viscoelastic component, a plurality of recesses are provided.

[0006] According to the actuator of the utility model, on the plate-shaped portion, at least in the part in contact with the first viscoelastic component and the second viscoelastic component, a plurality of recesses are provided, therefore, a plurality of recesses can be conveniently provided, and the bonding strength between the first viscoelastic component, the second viscoelastic component and the plate-shaped portion can be improved by using the plurality of recesses.

[0007] Further, in the actuator of the present application, preferably, the part of the first part that contacts the first viscoelastic member and the part of the second part that contacts the second viscoelastic member are each provided with a plurality of recesses.

[0008] According to the actuator of the present application, the coupling strength between the first part of the movable body and the first viscoelastic member and the coupling strength between the second part of the movable body and the second viscoelastic member can be improved by the plurality of recesses, whereby the movable body can be caused to move more reliably and stably with respect to the support body when the actuator is operated.

[0009] Further, in the actuator of the present application, preferably, the movable body can move with respect to the support body in a first direction orthogonal to the thickness direction of the plate-shaped portion, and the first viscoelastic member is provided at both ends of the plate-shaped portion in a second direction orthogonal to the thickness direction and the first direction, and the second viscoelastic member is provided at both ends of the plate-shaped portion in the second direction.

[0010] Further, in the actuator of the present application, preferably, the recesses are arranged in a third direction inclined with respect to the first direction and are arranged in a fourth direction orthogonal to the third direction.

[0011] According to the actuator of the present application, the coupling strength between the viscoelastic member and the plate-shaped portion can be further improved.

[0012] Further, in the actuator of the present application, preferably, the recesses are rectangular with sides inclined with respect to the first direction.

[0013] Further, in the actuator of the present application, preferably, the recesses are square, and the spacing between adjacent recesses is smaller than the length of the side of the recess.

[0014] Further, in the actuator of the present application, preferably, the plate-shaped portion includes a first plate and a second plate, the first plate and the second plate each constitute an end surface of both sides in the thickness direction of the plate-shaped portion and each has a plurality of recesses, the first plate and the second plate are each made of metal, and the first part and the second part are each made of metal.

[0015] Further, in the actuator of the present application, preferably, the plate-shaped portion includes a coil, a first magnet opposite the coil is provided on the side of the first part facing the plate-shaped portion, and a second magnet opposite the coil is provided on the side of the second part facing the plate-shaped portion.

[0016] Furthermore, in the actuator of this invention, the first viscoelastic component and the second viscoelastic component are preferably gel components.

[0017] Furthermore, in the actuator of this invention, the recess is preferably formed by stamping.

[0018] (Utility Model Effect)

[0019] According to this utility model, a plurality of recesses are provided on the plate-shaped portion, at least in the portions that contact the first viscoelastic component and the second viscoelastic component. Therefore, it is convenient to provide a plurality of recesses, and the bonding strength between the first viscoelastic component, the second viscoelastic component and the plate-shaped portion can be improved by using a plurality of recesses. Attached Figure Description

[0020] Figure 1 This is a side sectional view schematically illustrating an embodiment of the actuator of this utility model.

[0021] Figure 2 This is an exploded perspective view illustrating a portion of the structure of the actuator according to an embodiment of the present invention.

[0022] Figure 3 This is a perspective view schematically showing the plate component and viscoelastic component in the actuator according to an embodiment of the present invention.

[0023] Figure 4 This is a top view schematically illustrating the plate component in the actuator according to an embodiment of the present invention.

[0024] (Symbol Explanation)

[0025] 1 Actuator

[0026] 10 Support body

[0027] 11 Top wall part

[0028] 12 Bottom wall

[0029] 13 Side wall portion

[0030] 131 First sidewall

[0031] 132 Second sidewall

[0032] 133 Third sidewall

[0033] 134 Fourth sidewall

[0034] 14 plate-shaped part

[0035] 141 First board

[0036] 1411 First Board Main Body

[0037] 1412 First plate protruding piece

[0038] 142 Second Board

[0039] 1421 Second Board Main Body

[0040] 1422 Second plate protrusion

[0041] 143 Intermediate Plate

[0042] 144 coils

[0043] 20 movable bodies

[0044] 21 Part 1

[0045] 22 Part Two

[0046] 23 Connecting parts

[0047] 28 First Magnet

[0048] 29 Second Magnet

[0049] 31 First viscoelastic component

[0050] 32 Second viscoelastic component

[0051] PT recess

[0052] P11 First sidewall, first part

[0053] P111 Groove

[0054] P12 First sidewall, second part

[0055] P121 Groove

[0056] P21 Second sidewall, first part

[0057] P211 Groove

[0058] P22 Second sidewall, second part

[0059] P221 Groove Detailed Implementation

[0060] Below, in conjunction with Figures 1 to 4 The actuator of the present invention will be described.

[0061] For ease of explanation, the three mutually orthogonal directions are designated as X, Y, and Z. One side of the X direction is designated as X1, and the other side as X2. One side of the Y direction is designated as Y1, and the other side as Y2. One side of the Z direction is designated as Z1, and the other side as Z2.

[0062] (Overall structure of actuator)

[0063] As shown in Figure 1 and Figure 2 , the actuator 1 includes a support body 10 having a plate portion 14, a movable body 20 having a first portion 21, a second portion 22, and a connecting portion 23, the first portion 21 and the second portion 22 being opposed to the plate portion 14 on both sides in the thickness direction (Z direction in the illustrated example) of the plate portion 14, respectively, the connecting portion 23 connecting the first portion 21 and the second portion 22, a first viscoelastic member 31 contacting the plate portion 14 and the first portion 21 at positions where the plate portion 14 and the first portion 21 are opposed to each other, respectively, and a second viscoelastic member 32 contacting the plate portion 14 and the second portion 22 at positions where the plate portion 14 and the second portion 22 are opposed to each other, respectively.

[0064] Here, as shown in Figure 1 and Figure 2 , the support body 10 is provided with a coil 144 at the plate portion 14. The movable body 20 is provided with a first magnet 28 at the first portion 21 and a second magnet 29 at the second portion 22. The support body 10 is further provided with a circuit substrate electrically connected to the lead wire of the coil 144 at the end portion of the plate portion 14.

[0065] (Structure of support body)

[0066] As described above, the support body 10 has the plate portion 14.

[0067] Here, as shown in Figure 1 , the support body 10 further has a top wall portion 11, a bottom wall portion 12, and a side wall portion 13. The top wall portion 11 is located on the side opposite to the plate portion 14 with respect to the first portion 21 (Z2 direction side in the illustrated example). The bottom wall portion 12 is located on the side opposite to the plate portion 14 with respect to the second portion 22 (Z1 direction side in the illustrated example).

[0068] Further, as shown in Figure 1 , Figure 3 and Figure 4As shown, a plurality of recesses PT are provided on the plate-shaped portion 14 at least at portions in contact with the first viscoelastic member 31 and the second viscoelastic member 32. Specifically, the plate-shaped portion 14 is in the shape of a rectangular plate with a pair of sides parallel to the Y direction (corresponding to the second direction in the present application) as a whole, extends in a plane orthogonal to the Z direction, and includes a first plate 141 and a second plate 142. The first plate 141 and the second plate 142 are each made of metal and each constitute an end surface on one side in the thickness direction of the plate-shaped portion 14. The first plate 141 and the second plate 142 each have a plurality of recesses PT formed therein. The recesses PT are formed by punching. The recesses PT are arranged in a plurality of rows in a V direction (corresponding to the third direction in the present application) inclined with respect to the U direction (in the illustrated example, coincident with the Y direction), and are arranged in a plurality of rows in a W direction (corresponding to the fourth direction in the present application) orthogonal to the V direction. The recesses PT are rectangular with sides inclined with respect to the U direction. The recesses PT are square (in the illustrated example, a pair of sides are parallel to the U direction), and the spacing between adjacent recesses PT is smaller than the length of a side of the recess PT. The plate-shaped portion 14 further includes an intermediate plate 143 interposed between the first plate 141 and the second plate 142. The intermediate plate 143 has a through-hole extending in the Z direction, and a coil 144 is embedded in the through-hole. The first plate 141 and the second plate 142 are adhered to the intermediate plate 143 and the two end surfaces of the coil 144 in the Z direction, for example, by an adhesive. The first plate 141 has a first plate main body 1411 in the shape of a substantially rectangular plate, and a first plate tab 1412 standing up from each of the two ends of the opposite long sides of the first plate main body 1411. The second plate 142 has a second plate main body 1421 in the shape of a substantially rectangular plate, and a second plate tab 1422 standing up from each of the two ends of the opposite long sides of the second plate main body 1421.

[0069] Further, as Figure 1 and Figure 2As shown, the top wall portion 11 is in the shape of a rectangular plate with its thickness direction aligned with the Z direction and its pair of edges parallel to the Y direction, and extends in a plane orthogonal to the Z direction. The bottom wall portion 12 is in the shape of a rectangular plate with its thickness direction aligned with the Z direction and its pair of edges parallel to the Y direction, and extends in a plane orthogonal to the Z direction. The side wall portion 13 extends from the periphery of the plate-shaped portion 14 toward the Zl direction side and the Z2 direction side, and the end portion of the Z2 direction side of the side wall portion 13 abuts against the top wall portion 11, and the end portion of the Zl direction side of the side wall portion 13 abuts against the bottom wall portion 12. The side wall portion 13 includes a first side wall 131 and a second side wall 132 provided at the two edges of the plate-shaped portion 14 in the X direction (corresponding to the first direction in the present application), and a third side wall 133 and a fourth side wall 134 provided at the two edges of the plate-shaped portion 14 in the Y direction. The first side wall 131 is divided into a first side wall first portion P11 and a first side wall second portion P12 by a notch provided at the middle of the Y direction, and the first side wall first portion P11 and the first side wall second portion P12 are respectively provided with a groove P111 and a groove P121 extending in the Z direction. The groove P111 and the groove P121 respectively receive the first plate protruding piece 1412. The second side wall 132 is divided into a second side wall first portion P21 and a second side wall second portion P22 by a notch provided at the middle of the Y direction, and the second side wall first portion P21 and the second side wall second portion P22 are respectively provided with a groove P211 and a groove P221 extending in the Z direction. The groove P211 and the groove P221 respectively receive the second plate protruding piece 1422.

[0070] Structure of movable body

[0071] As described above, the movable body 20 has the first portion 21, the second portion 22, and the connecting portion 23, and has the first magnet 28 and the second magnet 29.

[0072] Here, as shown in Figure 1 and Figure 2 , the first portion 21 is in the shape of a rectangular plate with its thickness direction aligned with the Z direction and its pair of edges parallel to the Y direction. The second portion 22 is in the shape of a rectangular plate with its thickness direction aligned with the Z direction and its pair of edges parallel to the Y direction. The connecting portion 23 is formed integrally with the first portion 21, and includes two portions that rise from the middle of the edges of the first portion 21 in the X direction toward the Z2 direction, and the end portions of the two portions in the Z2 direction are engaged and connected with the edges of the second portion 22 in the X direction. The first portion 21 and the second portion 22 are each made of metal. The connecting portion 23 is also made of metal.

[0073] Further, as shown in Figure 1 and Figure 2As shown, the first magnet 28 is disposed on the side of the first portion 21 facing the plate-shaped portion 14, and is positioned opposite the coil 144. The second magnet 29 is disposed on the side of the second portion 22 facing the plate-shaped portion 14, and is positioned opposite the coil 144.

[0074] Furthermore, the movable body 20 can move relative to the support body 10 in the X direction, which is orthogonal to the thickness direction of the plate-shaped portion 14.

[0075] (Structure of a viscoelastic component)

[0076] As described above, the first viscoelastic member 31 is disposed at a position opposite to the first part 21 of the plate-shaped portion 14, and the second viscoelastic member 32 is disposed at a position opposite to the second part 22 of the plate-shaped portion 14.

[0077] Here, as Figures 1 to 4 As shown, the first viscoelastic member 31 is disposed at both ends of the plate-shaped portion 14 in the Y direction. The second viscoelastic member 32 is disposed at both ends of the plate-shaped portion 14 in the Y direction. That is, the first viscoelastic member 31 includes two opposing portions in the Y direction separated by the first magnet 28, and the second viscoelastic member 32 includes two opposing portions in the Y direction separated by the second magnet 29.

[0078] Furthermore, the first viscoelastic component 31 and the second viscoelastic component 32 are both viscoelastic. Specifically, the first viscoelastic component 31 and the second viscoelastic component 32 are gel components. More specifically, the first viscoelastic component 31 and the second viscoelastic component 32 are, for example, made of silicone gel with a penetration of 90 to 110 degrees. The penetration is specified by JIS-K-2207 or JIS-K-2220, and the smaller the value, the harder it is. The first viscoelastic component 31 and the second viscoelastic component 32 have linear or non-linear stretching characteristics depending on their stretching direction. For example, when the first viscoelastic component 31 and the second viscoelastic component 32 are pressed and compressed along their thickness direction (also called the axial direction, the Z direction in the illustrated example), they have a stretching characteristic in which the non-linear component (spring constant) is larger than the linear component (spring constant). Conversely, when stretched and extended along the thickness direction, they have a stretching characteristic in which the linear component (spring constant) is larger than the non-linear component (spring constant). On the other hand, when the first viscoelastic member 31 and the second viscoelastic member 32 deform in a direction intersecting the thickness direction (shear direction, or orthogonal to the Z direction in the illustrated example), regardless of which direction the movement is in, the deformation is in the direction of stretching and extension. Therefore, it has deformation characteristics with a linear component (spring constant) larger than a nonlinear component (spring constant).

[0079] (Main effects of this implementation method)

[0080] According to the actuator 1 of the present embodiment, the plurality of recesses PT are provided on the plate-shaped portion 14 at least at portions in contact with the first and second viscoelastic members 31 and 32, and thus the plurality of recesses PT can be easily provided, and the bonding strength between the first and second viscoelastic members 31 and 32 and the plate-shaped portion 14 can be increased using the plurality of recesses PT.

[0081] The utility model has been described above in conjunction with the drawings, and it is obvious that the specific implementation of the utility model is not limited by the above-mentioned embodiments.

[0082] For example, in the above-mentioned embodiments, the recesses PT are square, but are not limited thereto, and can be circular, triangular, or other shapes.

[0083] In addition, in the above-mentioned embodiments, the arrangement direction of the recesses PT is inclined with respect to the movement direction of the movable body 20, but is not limited thereto, and can be parallel to the movement direction of the movable body 20.

[0084] In addition, in the above-mentioned embodiments, the portion of the first portion 21 in contact with the first viscoelastic member 31 and the portion of the second portion 22 in contact with the second viscoelastic member 33 can each be provided with a plurality of recesses. The shape and distribution of the recesses are preferably the same as those of the recesses PT.

[0085] In addition, in the above-mentioned embodiments, the recesses PT are formed by stamping, but are not limited thereto, and can be formed by etching, cutting, injection molding, or the like.

[0086] In addition, in the above-mentioned embodiments, the materials of the first and second plates 141 and 142 are not limited to metal.

[0087] In addition, in the above-mentioned embodiments, the support body 10 has the coil 144, and the movable body 20 has the first and second magnets 28 and 29 opposite the coil 144, but is not limited thereto, and a magnet can be provided on the support body 10, and a coil opposite the magnet can be provided on the movable body 20.

[0088] It should be understood that, within the scope of the utility model, each part of the embodiments can be freely combined, or each part of the embodiments can be appropriately deformed or omitted.

Claims

1. An actuator comprising: a support body having a plate-shaped portion; a movable body having a first portion, a second portion, and a connecting portion, the first and second portions being opposed to the plate-shaped portion at both sides in a thickness direction of the plate-shaped portion, the connecting portion connecting the first and second portions; a first viscoelastic member contacting the plate-shaped portion and the first portion at positions where the plate-shaped portion and the first portion are opposed to each other; a second viscoelastic member contacting the plate-shaped portion and the second portion at positions where the plate-shaped portion and the second portion are opposed to each other, characterized in that a plurality of recesses are provided on the plate-shaped portion at least in portions where the first and second viscoelastic members are in contact.

2. The actuator according to claim 1, wherein the portions of the first and second portions where the first and second viscoelastic members are in contact are each provided with a plurality of recesses.

3. The actuator according to claim 1, wherein the movable body is movable relative to the support body in a first direction orthogonal to the thickness direction of the plate-shaped portion, when a direction orthogonal to both the thickness direction and the first direction is referred to as a second direction, the first viscoelastic member is provided at both ends of the plate-shaped portion in the second direction, the second viscoelastic member is provided at both ends of the plate-shaped portion in the second direction.

4. The actuator according to claim 3, wherein the recesses are arranged in a third direction inclined with respect to the first direction and in a fourth direction orthogonal to the third direction.

5. The actuator according to claim 3, wherein the recesses are rectangular with sides inclined with respect to the first direction.

6. The actuator according to claim 5, wherein the recesses are square, a spacing between adjacent recesses is smaller than a side length of the recesses.

7. The actuator according to claim 1, wherein the plate-shaped portion includes a first plate and a second plate, the first and second plates respectively constitute end surfaces of both sides in the thickness direction of the plate-shaped portion and each have a plurality of the recesses, the first and second plates are each made of metal, the first and second portions are each made of metal.

8. The actuator according to claim 1, wherein the plate-shaped portion includes a coil, a first magnet opposed to the coil is provided on a side of the first portion facing the plate-shaped portion, a second magnet opposed to the coil is provided on a side of the second portion facing the plate-shaped portion.

9. The actuator according to claim 1, wherein the first and second viscoelastic members are each a gel member.

10. The actuator according to claim 1, wherein the recesses are punched.

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