JP2016009536A - Positioning structure of rubber member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To perform positioning of a rubber component with high space efficiency.SOLUTION: Adjacent rubber members R are connected in the surface direction (direction parallel with the upper surface 11a) of a base 11, and at a position of a board 20 where there is a protrusion 23, ends in the arrangement direction (connecting direction) are disposed to overlap each other in the thickness direction of the base 11. The end of the rubber members R in the connecting direction is an overlapping part 14. Engaging holes 15-1, 15-2 are formed, respectively, in the overlapping parts 14-1, 14-2. Above the overlapping part 24 of the board 20, a protrusion 23 is inserted into the engaging holes 15-1, 15-2, and each rubber member R is disposed so as to be laminated in the order of the overlapping parts 14-2, 14-1. When the protrusion 23 is inserted into the engaging holes 15-1, 15-2, adjacent rubber members R in the connecting direction thereof are positioned relatively.

Description

  The present invention relates to a rubber part positioning structure in which a plurality of rubber parts each having a base portion and made of an elastic material are arranged and arranged.

  2. Description of the Related Art Conventionally, in order to provide a large number of dome-type switches, a plurality of elastic rubber parts having a plurality of dome portions are provided in an electronic device. For example, in Patent Document 1 below, in a keyboard device, three rubber parts (switch members) each having a plurality of switches are arranged in the key arrangement direction.

  As described above, when a plurality of rubber parts are arranged in a row on a substrate or the like, a device for positioning each rubber part is devised. For example, in the following Patent Document 2, a configuration in which a rubber part is supported by a holder is adopted. By positioning the small protrusion provided on the rubber part against the holder, the rubber part can be positioned with respect to the holder.

  In the configurations described in FIGS. 3 and 12 to 14, the rubber component is positioned by inserting the positioning projection provided on the holder into the fitting hole provided on the rubber component. In particular, in the configuration of FIG. 3, the small protrusion formed in the fitting hole contacts the positioning protrusion.

JP 2008-158065 A JP 11-213813 A

  However, in the said patent document 2, you have to provide the positioning protrusion for every rubber component. In other words, each rubber component is positioned with reference to the holder, and the rubber components are not positioned directly. Therefore, a positioning mechanism is required independently for each rubber component. Therefore, there is room for improvement in space efficiency.

  Further, in the configuration of FIG. 3, it is particularly disadvantageous for space saving because it is necessary to store the rubber part in the holder. In addition, since it is difficult to apply to a structure in which rubber parts are arranged on a flat member such as a substrate or an end face of a plate member, positioning of the rubber parts is not easy when the rubber parts are arranged in such a place. In addition, since small protrusions are formed in the fitting holes, a lot of space is wasted. In particular, when applying rubber parts to a keyboard instrument, it is important to devise space saving because the gap between keys is narrow.

  The present invention has been made to solve the above-described problems of the prior art, and an object of the present invention is to provide a rubber part positioning structure capable of easily positioning a rubber part with high space efficiency.

  In order to achieve the above object, the rubber part positioning structure according to claim 1 of the present invention includes a base part (11), and a plurality of rubber parts (R) made of an elastic material, and a reference part (20). A plurality of rubber parts positioning structure arranged continuously in the surface direction of the base part, wherein each of the reference parts and the base parts of the plurality of rubber parts arranged adjacent to each other are There are overlapping portions (14, 24) overlapping each other in the thickness direction, and the overlapping portion of some of the reference component and the plurality of rubber components has a component in the thickness direction of the base portion. Protrusions (13, 23) are projected and engaging holes (15, 25) corresponding to the protrusions are formed in the overlapping parts of the parts other than the part, and the reference parts and The overlapping portions of each of the plurality of rubber parts Sleeping together, the protrusion that fits into said engaging hole, characterized in that the relative positioning in the continuous alignment direction of the between the plurality of rubber components is made.

  In order to achieve the above object, the rubber part positioning structure according to claim 2 of the present invention has a base part (11), and a plurality of rubber parts (R) made of an elastic material are arranged on the surface of the base part. A rubber part positioning structure in which a plurality of rubber parts are arranged in a row in the direction, and the base parts of the plurality of rubber parts arranged adjacent to each other overlap each other in the thickness direction of the base part (14) And a protruding portion (13) having a component in the thickness direction of the base portion is projected from an overlapping portion of some of the plurality of rubber components, and the some rubber Engagement holes (15) corresponding to the protrusions are formed in the overlapping parts of the rubber parts other than the parts, and the overlapping parts of the plurality of rubber parts are overlapped with each other, and the protrusions are connected to the engagement holes. By inserting into the plurality of rubber Wherein the relative positioning in the continuous arrangement direction of the article with each other are made.

  In addition, the code | symbol in the said parenthesis is an illustration.

  According to the present invention, rubber parts can be easily positioned with high space efficiency.

  According to the third aspect, the overlapping portion is unlikely to be an obstacle to securing the space. According to claim 4, space efficiency can be improved. According to the fifth aspect, the engagement between the protrusion and the engagement hole can be made difficult to be released.

A top view (Drawing (a)) showing a mode that a plurality of rubber parts to which a positioning structure concerning one embodiment of the present invention is applied were arranged on a substrate, a section which meets an AA line of Drawing 1 (a) FIG. 4B is a cross-sectional view illustrating a state in which a plurality of rubber components to which the positioning structure of the first modification is applied are arranged on a substrate. It is sectional drawing (figure (a)-figure (f)) which shows the positioning structure which concerns on the 2nd-7th modification. The top view (figure (a)) which shows the positioning structure concerning an 8th modification, sectional view (figure (b)) which meets the BB line of Drawing 3 (a), and the 9th and 10th modification It is sectional drawing (figure (c)) which shows the positioning structure which concerns, and a top view (figure (d)). It is a top view (figure (a)) showing a positioning structure concerning the 11th modification, and a sectional view (figure (b)) which meets a CC line of Drawing 4 (a).

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1A is a plan view showing a state in which a plurality of rubber components to which a positioning structure according to an embodiment of the present invention is applied are arranged on a substrate. FIG.1 (b) is sectional drawing which follows the AA line of Fig.1 (a).

  Hereinafter, among the plurality of rubber parts R, two adjacent parts will be described as rubber parts RA and RB. Since the configuration of each rubber part R is common, the individual rubber parts R are simply referred to as rubber parts R in the description when not particularly distinguished.

  FIG. 1A shows an example in which a plurality of long rubber parts R are arranged in the longitudinal direction in plan view. These rubber parts R are arranged, for example, on a keyboard instrument. The rubber component R has a plurality of contact domes 12 for detecting key operations, and is disposed on the substrate 20 so that the arrangement direction of the contact domes 12 coincides with the key arrangement direction.

  The rubber component R is made of an elastic material such as rubber or silicon, and a contact dome 12 is formed integrally with the base portion 11. A movable contact is provided inside the contact dome 12, and a fixed contact corresponding to the movable contact of the contact dome 12 is provided on the substrate 20 (both not shown). Is pressed by a key or the like and buckled, and the movable contact is brought into contact with the fixed contact.

  The board | substrate 20 is formed in plate shape of uniform thickness, and the projection part 23 is protrudingly provided from the surface by which the rubber component R is arrange | positioned of the board | substrate 20. As shown in FIG. The same number of protrusions 23 are provided for one rubber component R, two in this example. These two protrusions 23 are provided as a set at the same position in the arrangement direction of the rubber parts R. Adjacent rubber parts R are continuously provided in the surface direction (direction parallel to the upper surface 11 a) of the base portion 11, and the end portions in the arrangement direction (continuous arrangement direction) of the base portion 11 are located at positions where the protrusions 23 are present. It arrange | positions so that it may mutually overlap in the thickness direction. The base part 11 of the rubber part R has a uniform thickness, but the end part in the arrangement direction is an overlapping part 14 (14-1, 14-2), and the thickness of the overlapping part 14 is not the overlapping part 14. Thinner than. An area of the substrate 20 corresponding to a portion where the overlapping portion 14-1 at the end of the rubber component RA overlaps with the overlapping portion 14-2 at the end of the rubber component RB is referred to as an overlapping portion 24. Engagement holes 15-1 and 15-2 corresponding to the protrusions 23 are formed in the overlapping part 14-1 and the overlapping part 14-2, respectively.

  Next, a method for arranging (assembling) the rubber part RA will be described. As shown in FIG. 1B, the operator inserts the protrusion 23 into the engagement holes 15-1 and 15-2 and overlaps the overlap portion 14-2 and overlaps on the overlap portion 24 of the substrate 20. The rubber parts R are arranged so as to be laminated in the order of the parts 14-1. Since the overlapping portion 14-1 is located below the overlapping portion 14-2, it is convenient to arrange the rubber components R on the right side in FIG. Alternatively, a plurality of rubber parts R may be arranged on the substrate 20 in a state where the overlapping portion 14-1 and the overlapping portion 14-2 are overlapped.

  The protrusions 23 are fitted into the engagement holes 15-1 and 15-2, whereby the rubber parts RA and RB are positioned in the connecting direction of the rubber parts R with reference to the protrusion 23. As a result, the relative positioning of the adjacent rubber part RA and the rubber part RB in the continuous direction is performed. The total thickness of the overlapping portion 14-1 and the overlapping portion 14-2 is the same as the uniform thickness of the portion of the base portion 11 that is not the overlapping portion. Therefore, the upper surface of the overlapping portion 14-1 and the lower surface of the overlapping portion 14-2 are flush with the upper surface 11 a and the lower surface 11 b of the non-overlapping portion of the base portion 11. Thereby, the thickness of the overlapping portion 14 does not erode the space specially.

  After the plurality of rubber parts R are continuously provided on the substrate 20, the frame 30 is put on the rubber parts R. It should be noted that the frame 30 may not correspond to the length of all the rubber components R provided, and a plurality of frames 30 may be provided for each predetermined number of rubber components R. The frame 30 includes a plate-like portion 31 and claw portions 32 that are suspended from both sides in the width direction of the plate-like portion 31 and are integrally formed of metal or the like.

  The operator brings the plate-like part 31 close to the upper surface 11 a of the base part 11 and arranges it on the substrate 20. Then, the nail | claw part 32 is clamped from the width direction both sides so that the side part of the board | substrate 20 may be held. Thereby, the assembly is completed in a state where the plate-like portion 31 slightly biases the base portion 11 toward the substrate 20 side. Note that it is not essential to use the frame 30 for assembling the rubber component R. Even if the rubber component R is fixed to the substrate 20 with an adhesive or a screw so that the lower surface 11 b of the base portion 11 does not float from the upper surface of the substrate 20. Good.

  If the rubber components R are arranged adjacent to each other without overlapping each other, the protrusions 23 correspond to the both ends of the rubber component R in order to position each rubber component R independently of the substrate 20. It is necessary to provide it. If it does so, two sets of projection parts 23 will be arranged side by side in the connecting direction of rubber component R, and space will be wasted. In particular, in a keyboard instrument, the space between keys is narrow, and it is difficult to secure a space for arranging two sets of protrusions 23 in the key arrangement direction. However, in the present embodiment, since one set of projections 23 also serves as a positioning function for two adjacent rubber parts R, the projecting space for the projections 23 can be reduced.

  Therefore, according to the present embodiment, the overlapping portion 24 of the substrate 20 and the overlapping portion 14 of the rubber component R are overlapped with each other, and the protrusions 23 are fitted into the engaging holes 15, so that a plurality of rubbers are formed on the substrate 20. Since the relative positioning in the connecting direction of the parts R is performed, the rubber parts can be easily positioned with high space efficiency. The number of protrusions 23 can be minimized. The number of protrusions 23 may be one for one rubber component R.

  Further, the total thickness of the overlapping portion 14-1 and the overlapping portion 14-2 of the rubber part R is the same as that of the non-overlapping portion of the base portion 11, and both surfaces (upper surface 11a, Both lower surfaces 11b) are flush. Thereby, the overlapping portion 14 is less likely to be an obstacle to securing space, and space efficiency can be improved. From this viewpoint, the total thickness of the overlapping portion 14-1 and the overlapping portion 14-2 may be configured to be thinner than the maximum thickness of the portion that is not the overlapping portion in the base portion 11.

  In addition, since the configuration of all rubber parts R can be made common, the number of parts can be reduced.

(Modification)
Hereinafter, modified examples of the positioning structure will be described with reference to FIGS. 1C, 2, and 3.

  FIG. 1C is a cross-sectional view showing a state in which a plurality of rubber components to which the positioning structure of the first modification is applied are arranged on the substrate. In the structure shown in FIGS. 1A and 1B, the configuration of the plurality of rubber parts R is common, and the rubber parts R are overlapped at the two end parts in the connecting direction at the lower side when stacked. 14-1 and the upper overlapping portion 14-2. However, in the first modified example (FIG. 1C), two types of rubber parts R are provided. The first type rubber component RA has an overlapping portion 14-2 which is the lower side at the time of stacking at both ends in the continuous arrangement direction, but the second type rubber component RB is both in the continuous arrangement direction. At the end of this, there is an overlapping portion 14-1 that becomes the upper side when stacked. Therefore, when disposed on the substrate 20, the vertical relationship of the overlapping portions 14 is alternate.

  In the examples of FIGS. 1A, 1B, and 1C, the protrusions are provided in the substrate 20, and the engagement holes are provided in the rubber component R. However, it is not limited to this. Further, the number of rubber parts R to be positioned may be three or more. Accordingly, a protrusion having a component in the thickness direction of the base portion 11 is provided at an overlapping portion of at least one component among the substrate 20 (reference component) and the plurality of rubber components R, and the at least one component described above. You may employ | adopt the structure in which the engagement hole corresponding to a projection part is formed in the overlap part of components other than.

  FIGS. 2A to 2E are cross-sectional views of adjacent portions of rubber parts, showing positioning structures according to second to sixth modifications.

  The example which provided the projection part in the rubber component R in FIG. 2 (a)-(d) is given. First, in the second modified example (FIG. 2A), the protruding portion 13 protrudes downward from the overlapping portion 14-1 of the rubber part RA. Further, an engagement hole 15-2 corresponding to the protrusion 13 is formed in the overlapping part 14-2 of the rubber component RB, and an engagement hole 25 corresponding to the protrusion 13 is formed in the overlapping part 24 of the substrate 20. It is formed.

  The overlapping portion 14-2 and the overlapping portion 14-1 are overlapped on the overlapping portion 24, and the protruding portion 13 is fitted into the engaging hole 15-2 and the engaging hole 25 so that the protruding portion 13 is used as a reference. The rubber parts RA and RB are positioned relative to each other in the installation direction.

  In the third modified example (FIG. 2B), the protruding portions 13-1 and 13-2 are concentrically provided on the overlapping portion 14-2 of the rubber component RB upward and downward. Further, an engagement hole 15-1 corresponding to the protrusion 13-1 is formed in the overlapping portion 14-1 of the rubber part RA, and an engagement corresponding to the protrusion 13-2 is formed in the overlapping portion 24 of the substrate 20. A joint hole 25 is formed.

  The worker overlaps the overlapping portion 14-2 and the overlapping portion 14-1 on the overlapping portion 24, and inserts the protruding portions 13-1 and 13-2 into the engaging holes 15-1 and 25, respectively. The position of the rubber component RB with respect to the substrate 20 is regulated by the engagement between the protrusion 13-2 and the engagement hole 25, and is continuously provided by the engagement between the protrusion 13-1 and the engagement hole 15-1. The relative positioning of the rubber parts RA, RB in the direction is made.

  By the way, if the main purpose is to position the rubber parts R, the positioning function of the rubber parts R with respect to the substrate 20 is not essential. For example, in the fourth modified example (FIG. 2C), a structure in which the rubber parts RA and RB are relatively positioned in relation to the rubber parts R is employed. Each rubber component R is fixed to the substrate 20 by adhesion or the like.

  First, the protruding portion 13 is projected upward from the overlapping portion 14-2 of the rubber component RB. Furthermore, the engagement hole 15-1 corresponding to the projection part 13 is formed in the overlapping part 14-1 of the rubber part RA. Then, the overlapping parts 14-2 and 14-1 are overlapped, and the protrusions 13 are fitted into the engaging holes 15-1, whereby the rubber parts RA and RB are relatively positioned in the connecting direction. .

  In addition, when performing relative positioning by the relationship between the rubber components R, the number of rubber components R to be positioned may be three or more. Accordingly, a protrusion having a component in the thickness direction of the base portion 11 protrudes from an overlapping portion of at least one of the plurality of rubber components R, and a rubber component R other than the at least one rubber component R is provided. A structure in which an engagement hole corresponding to the protrusion is formed in the overlapping portion may be adopted.

  In the fifth modification (FIG. 2D), a protruding portion 13-1 protrudes downward from the overlapping portion 14-1 of the rubber part RA. On the other hand, a protruding portion 23 is provided on the overlapping portion 24 of the substrate 20 so as to protrude upward and concentrically with the protruding portion 13-1. Furthermore, the engagement hole 15-2 corresponding to the protrusions 13-1 and 23 is formed in the overlapping portion 14-2 of the rubber component RB. When the operator overlaps the overlapping portion 14-2 on the overlapping portion 24, the operator inserts the protruding portion 23 into the engaging hole 15-2. Further, when the overlapping portion 14-1 is overlapped on the overlapping portion 14-2, the protruding portion 13-1 is inserted into the engaging hole 15-2. The protrusions 13-1 and 23 are both fitted into the engagement holes 15-2, so that the positions of the rubber components RA and RB with respect to the substrate 20 are simultaneously restricted. That is, the position of the rubber component RB relative to the substrate 20 is regulated by the engagement of the protrusion 23 and the engagement hole 15-2, and the engagement of the protrusion 13-1 and the engagement hole 15-2 The rubber parts RA and RB are positioned relative to each other in the connecting direction.

  Note that the protrusions may protrude from the two rubber parts R. Although the structure is not shown, in the fifth modification, instead of the substrate 20 with the protrusion 23 protruding upward, the rubber part R with the protrusion protruding upward is shown in FIG. It is easy to understand if a rubber part R group having a triple structure is added.

  In addition, although it recedes from a space-saving viewpoint, like the 6th modification (FIG.2 (e)), the thickness of the part in which the total thickness of the overlapping parts 14-1 and 14-2 is not an overlapping part in the base part 11 It may be thicker.

  Note that the protruding direction of the pair of protruding portions 23 provided at the same position in the arrangement direction of the rubber parts R may not be parallel. As in the seventh modified example shown in FIG. 2 (f), the first protrusion 23-1 protrudes straight upward and the second protrusion 23-2 is vertical. You may incline with respect to a direction. That is, in the relationship between the two protrusions 23, the closer to the tip in the protruding direction, the larger the distance between them.

  In this way, even when the contact dome 12 is repeatedly pressed, the engagement between the protrusion 23 and the engagement hole 15 is difficult to be released, and the rubber component R is firmly fixed to the substrate 20. In particular, when the arrangement direction of the first protrusion 23-1 and the second protrusion 23-2 coincides with the longitudinal direction of the key of the keyboard instrument, the direction in which the base portion 11 is pulled or compressed by the key depression is determined. The two projections 23 act to resist each other. It should be noted that such a configuration in which the protrusion angles of the pair of protrusions are made different can also be applied to the protrusions protruding from the rubber component R. When there are three or more pairs of protrusions, at least two of them may be in a relationship as shown in FIG.

  In addition, about the protrusion direction of a projection part, only one part among 1 set may protrude in a different direction. Note that the protrusion is not limited to being a pin, and may be a screw.

  In each example shown in FIG. 1 and FIG. 2, the positioning structure between two rubber parts R is taken into consideration, but a modification applied to three or more rubber parts R will be described with reference to FIG.

  FIG. 3A is a plan view showing a state in which three rubber components to which the positioning structure according to the eighth modification is applied are arranged on the substrate. FIG.3 (b) is sectional drawing which follows the BB line of Fig.3 (a). As shown to Fig.3 (a), each overlap part 14 of the rubber components RA, RB, RC is comprised in a triangle by planar view. In the direction parallel to the upper surface of the substrate 20, the rubber components RA, RB, RC are radially arranged in three equally spaced directions.

  As shown in FIG. 3B, a protruding portion 23 protrudes upward from the overlapping portion 24 of the substrate 20. An engagement hole 15-3 corresponding to the protrusion 23 is formed in the overlapping portion 14-3 of the rubber component RC. An engagement hole 15-2 corresponding to the protrusion 23 is formed in the overlapping portion 14-2 of the rubber component RB. An engagement hole 15-1 corresponding to the protrusion 23 is formed in the overlapping portion 14-1 of the rubber part RA. By overlapping the overlapping portions 14-3, 14-2, 14-1 on the overlapping portion 24 in this order, the protruding portion 23 is fitted into the engaging holes 15-3, 15-2, 15-1, so that the protruding portion 23, the rubber parts RA, RB, RC are relatively positioned in a direction parallel to the upper surface of the substrate 20. The total thickness of the overlapping portions 14-1, 14-2 and 14-3 is the same as the thickness of the non-overlapping portion in the base portion 11.

  Note that, as in the ninth modification shown in FIG. 3C, the protruding portion may protrude from the rubber component R even in a configuration in which three or more rubber components R are stacked. The structure of the ninth modification is a modification of the eighth modification (FIGS. 3A and 3B). First, as shown in FIG.3 (c), the protrusion parts 13-1 and 13-2 are protrudingly provided concentrically up and down by the overlapping part 14-2 of the rubber components RB. Moreover, the engagement hole 15-1 corresponding to the projection part 13-1 is formed in the overlapping part 14-1 of the rubber part RA. Further, an engagement hole 15-3 corresponding to the protrusion 13-2 is formed in the overlapping portion 14-3 of the rubber component RC, and an engagement corresponding to the protrusion 13-2 is formed in the overlapping portion 24 of the substrate 20. A joint hole 25 is formed.

  The operator overlaps the overlapping portions 14-3, 14-2 and 14-1 on the overlapping portion 24 in order. At that time, the protrusion 13-2 is inserted into the engagement holes 15-3 and 25, respectively, and the protrusion 13-1 is inserted into the engagement hole 15-1. Thereby, relative positioning of the rubber components RA, RB, RC in the direction parallel to the upper surface of the substrate 20 is performed with the concentric protrusions 13-1, 13-2 as a reference.

  In addition, the number of the rubber parts R used as the object for mutual positioning is not ask | required. Four rubber parts R may be arranged on the substrate 20 as in the tenth modification shown in FIG. In the 10th modification (Drawing 3 (d)), each overlap part 14 of rubber parts RA, RB, RC, and RD is constituted by a rectangle by plane view. In a direction parallel to the upper surface of the substrate 20, the rubber components RA, RB, RC, and RD are radially arranged in four equally spaced directions.

  Note that the present invention can also be applied to a case where a plurality of rubber components R are arranged in a matrix as in the eleventh modification shown in FIG. FIG. 4A is a plan view showing a state in which rubber parts to which the positioning structure according to the eleventh modification is applied are arranged in a matrix on the substrate. FIG.4 (b) is sectional drawing which follows the CC line | wire of Fig.4 (a). The relationship in the vertical direction of FIG. 4A in the matrix, for example, the relationship between the rubber component RA and the rubber component RB can be considered in the same manner as described with reference to FIGS. Further, the relationship in the left-right direction of FIG. 4A in the matrix, for example, the relationship between the rubber component RA and the rubber component RC can be considered in the same manner as described with reference to FIGS. On the other hand, in the region where the four rubber parts R overlap, it can be considered in the same manner as in the tenth modification (FIG. 3D). A protruding portion 23 protrudes upward from the overlapping portion 24 of the substrate 20. As a work procedure, the worker arranges on the substrate 20 in the order of RA → RB → RC → RD → RE → RF. As an example, in the overlapping portion 24 where the four rubber components RA, RB, RC, and RD overlap, as shown in FIG. 4B, the overlapping portion 14-a of the rubber component RA and the rubber component RB are sequentially arranged from the bottom. The overlapping part 14-b, the overlapping part 14-c of the rubber part RC, and the overlapping part 14-d of the rubber part RD overlap. The number of vertical and horizontal in the matrix does not matter.

  In the above-described embodiments and modifications, the engaging portion that engages with the protrusion is not limited to the through hole, and may be a recess or a blind hole. Moreover, although the board | substrate 20 was illustrated as a reference | standard component which arrange | positions the rubber component R, it does not restrict to this.

  Moreover, there is no limitation in the number and arrangement | positioning of the contact dome 12 in the rubber component R, What is necessary is just to employ | adopt the dome arrangement | sequence according to the apparatus to which positioning structure is applied. However, the rubber component R is not limited to the one having a switch function like the contact dome 12. Moreover, there is no limitation also about the planar view shape of the rubber component R. FIG.

  The device to which the device to which the positioning structure of the present invention is applied is not limited to a keyboard instrument. The present invention can be applied to an apparatus having a plurality of general operation elements.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. A part of the above-described embodiments may be appropriately combined.

  R rubber component, 11 base portion, 11a upper surface, 11b lower surface, 13, 23 protrusion, 14, 24 overlapping portion, 15, 25 engagement hole, 20 substrate (reference component)

Claims (5)

A rubber part positioning structure in which a plurality of rubber parts having a base part and made of an elastic material are arranged in series with a reference part in the surface direction of the base part,
Each of the base parts of the reference part and the plurality of rubber parts arranged adjacent to each other has an overlapping part that overlaps the thickness direction of the base part,
A protruding portion having a component in the thickness direction of the base portion protrudes from an overlapping portion of a part of the reference part and the plurality of rubber parts, and parts other than the part of the base part are projected. An engagement hole corresponding to the protrusion is formed in the overlapping portion,
The overlapping portions of the reference component and the plurality of rubber components are overlapped with each other, and the protrusions are inserted into the engagement holes, whereby relative positioning in the connecting direction of the plurality of rubber components is performed. A rubber part positioning structure characterized by that. A rubber part positioning structure in which a plurality of rubber parts having a base part and made of an elastic material are arranged in a row in the surface direction of the base part.
The base portions of the plurality of rubber parts arranged adjacent to each other have overlapping portions that overlap each other in the thickness direction of the base portion,
A protruding portion having a component in the thickness direction of the base portion protrudes from an overlapping portion of the rubber components of the plurality of rubber components, and the rubber components other than the rubber components overlap. The part is formed with an engagement hole corresponding to the protruding part,
The overlapping portions of the plurality of rubber components are overlapped with each other, and the protrusions are fitted into the engagement holes, whereby relative positioning in the connecting direction of the plurality of rubber components is performed. Rubber part positioning structure. Each of the base portions of the plurality of rubber parts is thinner in the overlapping portion than in the portion that is not the overlapping portion,
The rubber part positioning structure according to claim 1 or 2, wherein the total thickness of the overlapping portions of each of the plurality of rubber parts is the same as or thinner than the thickness of the base part of the plurality of rubber parts. .   4. The rubber part according to claim 3, wherein each of the base parts of the plurality of rubber parts is such that both the non-overlapping part and the overlapping part are flush with each other in the thickness direction. Positioning structure.   The at least two protrusions are provided corresponding to one rubber component, and the distance between the at least two protrusions increases as the distance from the tip in the protruding direction increases. 5. The rubber part positioning structure according to any one of 4 above.