Operation detection device

Abstract

To improve detection performance.SOLUTION: In an operation detection device 10, a panel side connecting portion 50 connects an operation panel member 30 and a substrate 40. The panel side connecting portion 50 includes a connecting shaft 51 provided on the substrate 40, a connecting tube portion 52 provided on the operation panel member 30, and a coupling portion 53 coupling the connecting shaft 51 and the connecting tube portion 52. The coupling portion 53 is made of an adhesive or a potting material, and the cured coupling portion 53 couples the connecting shaft 51 and the connecting tube portion 52 in a relatively non-movable manner. Consequently, the coupling portion 53 can absorb variations in the relative position between the operation panel member 30 and the substrate 40 in a front-rear direction, which is caused by an assembly error during assembly or a tolerance of each component. Therefore, it is possible to detect an operation on an operation portion 31 satisfactorily. Thus, the detection performance of the operation detection device 10 can be improved.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to an operation detection device. [Background technology]

[0002] In the load detection device (operation detection device) described in Patent Document 1 below, a load sensor is housed in a case, and a plate is disposed adjacent to the upper side of a pressure receiving portion of the load sensor, with the plate abutting the pressure receiving portion of the load sensor. An elastic body that functions as an operation portion is disposed adjacent to the upper side of the plate. The load sensor includes a sensor substrate and a strain detection element. When the elastic body is pressed downward, the plate presses the pressure receiving portion downward, and the strain detection element can detect that the elastic body has been pressed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-161531 Summary of the Invention [Problem to be solved by the invention]

[0004] In the load detection device, the state of contact between the plate and the pressure-receiving portion may vary due to dimensional tolerances and assembly errors of each component. Specifically, the amount of overlap between the plate and the pressure-receiving portion in the vertical direction may change, which may cause variations in the initial detection value of the strain detection element when the device is not being operated. In this case, for example, if the threshold value for the detection value of the strain detection element used to determine whether the elastic body has been pressed is set taking into account variations in the initial detection value of the strain detection element, the detection performance of the load detection device may be degraded. Furthermore, improving the detection performance requires calibrating the threshold value for each product after assembly, which reduces productivity.

[0005] In consideration of the above, an object of the present invention is to provide an operation detection device that can improve detection performance. [Means for solving the problem]

[0006] One or more embodiments of the present invention provide an operation detection device comprising: an operation panel member configured to be touch-operable on one side in a first direction; a strain detection member provided on one side of the operation panel member in the first direction and having a strain sensor; a base member provided on one side of the strain detection member in the first direction; a panel-side connecting portion connecting the operation panel member and the strain detection member; and a base-side connecting portion connecting the strain detection member and the base member, wherein at least one of the panel-side connecting portion and the base-side connecting portion includes a first connecting portion provided on one of the members to be connected, a second connecting portion provided on the other of the members to be connected, and a connecting portion made of adhesive or potting material that connects the first connecting portion and the second connecting portion, and wherein the first connecting portion and the second connecting portion are connected by the connecting portion after hardening so that they cannot move relative to each other. [Effects of the Invention]

[0007] According to one or more embodiments of the present invention, improved detection performance can be achieved. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view showing an operation detection device according to an embodiment of the present invention, as viewed from the front side. [Figure 2] FIG. 2 is an exploded perspective view of the operation detection device shown in FIG. [Figure 3] 3 is a cross-sectional view (cross-sectional view taken along line 3-3 in FIG. 1) showing the inside of the operation detection device shown in FIG. 1 as seen from above. [Figure 4] 4 is a cross-sectional view (cross-sectional view taken along line 4-4 in FIG. 3) showing the inside of the right end portion of the operation detection device shown in FIG. 3 as viewed from the right side. [Figure 5] 4 is a cross-sectional view seen from above showing an example in which the structure of the panel-side connecting portion shown in FIG. 3 is applied to a base-side connecting portion. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] The operation detection device 10 according to this embodiment will be described below with reference to the drawings. Note that the arrows UP, FR, and RH shown as appropriate in the drawings indicate the upper side, front side, and right side of the operation detection device 10, respectively. In the following description, when the up / down, front / rear, and left / right directions are used, they refer to the up / down direction, front / rear direction, and left / right direction of the operation detection device 10 unless otherwise specified. The front / rear direction corresponds to the first direction of the present invention, the up / down direction corresponds to the second direction of the present invention, and the left / right direction corresponds to the third direction of the present invention.

[0010] As shown in FIGS. 1 to 4, the operation detection device 10 is formed in a generally rectangular, flat shape with the thickness extending in the front-to-rear direction and the length extending in the left-to-right direction. The operation detection device 10 is mounted on a vehicle (automobile), forms part of an interior panel of the vehicle cabin, and is exposed to the cabin so as to be operable. The operation detection device 10 includes a base member 20, an operation panel member 30, and an insulating substrate 40 (hereinafter referred to as substrate 40) as a strain detection member. The operation detection device 10 also has a pair of left and right panel-side connecting portions 50 that connect the substrate 40 and the operation panel member 30, and a pair of left and right base-side connecting portions 60 that connect the substrate 40 and the base member 20.

[0011] (Regarding the base member 20) The base member 20 constitutes the rear of the operation detection device 10. The base member 20 is formed in the shape of a generally rectangular box with a relatively shallow bottom, with the left-right direction as the longitudinal direction and open to the front. Fixed cylinder portions 21 for fixing an operation panel member 30 (described later) are formed at the four corners of the bottom wall (rear wall) of the base member 20. The fixed cylinder portion 21 is formed in the shape of a generally cylindrical cylinder with a bottom that is open to the rear, and protrudes to the front from the bottom wall of the base member 20. A circular base fixing hole 22 is formed through the center of the bottom wall of the fixed cylinder portion 21.

[0012] A pair of left and right board fixing bosses 61 that constitute a base-side connecting portion 60 (described later) are provided on the bottom wall of the base member 20. The board fixing boss 61 is formed in a substantially cylindrical shape with its axial direction extending in the front-to-rear direction, and protrudes forward from the bottom wall of the base member 20. The interior of the board fixing boss 61 penetrates in the front-to-rear direction. The board fixing bosses 61 are arranged in the vertical center of both left-to-right end portions of the bottom wall of the base member 20. The left board fixing boss 61 is arranged laterally inward of the pair of upper and lower fixed cylinder portions 21 arranged on the left, and the right board fixing boss 61 is arranged laterally inward of the pair of upper and lower fixed cylinder portions 21 arranged on the right.

[0013] (Regarding the operation panel member 30) The operation panel member 30 constitutes the front portion of the operation detection device 10. The operation panel member 30 is made of a resin material and is formed in the shape of a relatively shallow rectangular box with its longitudinal direction extending in the left-right direction and its rear side open. The outer shape of the operation panel member 30 viewed from the front side substantially matches the outer shape of the base member 20. The operation panel member 30 is disposed in front of the base member 20, and the peripheral walls of the operation panel member 30 and the base member 20 are disposed opposite each other in the front-rear direction. The bottom wall (front wall) of the operation panel member 30 serves as an operation unit 31, and the front surface (surface) of the operation unit 31 is exposed to the cabin of the vehicle so as to be operable. When an operator touches (presses) the operation unit 31, the operation on the operation unit 31 is detected by a strain gauge 42, which will be described later.

[0014] Panel-side fixing bosses 32 are provided at the four corners of the operation unit 31 at positions corresponding to the fixed cylinder portions 21 of the base member 20. The panel-side fixing bosses 32 are formed in a substantially cylindrical shape with the axial direction being the front-to-rear direction, and protrude rearward from the operation unit 31. Panel fixing screws 33 are inserted from the rear into the base fixing holes 22 of the base member 20 and screwed into the panel-side fixing bosses 32, and the operation panel member 30 is fixed to the base member 20 by the panel fixing screws 33 (see FIG. 4). As a result, the corners of the outer periphery of the operation unit 31 are supported from the rear by the base member 20.

[0015] (Regarding the substrate 40) The board 40 is formed in a substantially rectangular plate shape with the front-to-rear direction as the plate thickness direction and the left-to-right direction as the longitudinal direction. The board 40 is housed inside the base member 20 and arranged on the rear side of the operation panel member 30. Board fixing holes 41 are formed through the board 40 at positions corresponding to the board fixing bosses 61 of the base member 20. Board fixing screws 62 are inserted into the board fixing holes 41 from the front side and screwed into the board fixing bosses 61 of the base member 20, and the board 40 is fixed to the base member 20 by the board fixing screws 62.

[0016] A pair of strain gauges 42 serving as left and right strain sensors are provided on both left and right end portions of the front surface of the substrate 40. The strain gauges 42 are arranged a predetermined distance apart inside the substrate fixing screws 62 in the left and right direction. The strain gauges 42 are formed in the shape of a substantially rectangular sheet, and are attached to the substrate 40 with their longitudinal direction substantially aligned with the left and right direction. The strain gauges 42 are configured as sensors that detect strain in the substrate 40 based on a tensile load or a compressive load acting in the longitudinal direction of the strain gauges 42.

[0017] The strain gauges 42 each form a Wheatstone bridge circuit (not shown), and the Wheatstone bridge circuits are electrically connected to a control unit (not shown). When the control unit applies a voltage to each Wheatstone bridge circuit, an output voltage proportional to the applied voltage and proportional to the change in electrical resistance of the strain gauges 42 is output to the control unit. The control unit detects a pressing operation on the operating unit 31 based on the strain value detected from the strain gauges 42.

[0018] Furthermore, the substrate 40 is configured so that electronic components such as LEDs can be mounted thereon. As a result, for example, a light-transmitting section that can transmit light can be formed in the operation unit 31, and the light emitted from the LED can be directed toward the light-transmitting section to illuminate the light-transmitting section.

[0019] (Regarding the panel-side connecting portion 50) As described above, the pair of left and right panel-side connecting parts 50 are configured as a mechanism that connects the operation panel member 30 and the base plate 40. The pair of left and right panel-side connecting parts 50 are configured symmetrically with respect to the center of the operation panel member 30 in the left-right direction. Therefore, the configuration of the panel-side connecting parts 50 will be described below using the right panel-side connecting part 50. The panel-side connecting part 50 is configured to include a connecting shaft 51 as a first connecting part, a connecting tube part 52 as a second connecting part, and a joining part 53.

[0020] The connecting shaft 51 is formed in a generally stepped cylindrical shape with its axial direction extending in the front-to-rear direction. Specifically, the diameter of the rear end of the connecting shaft 51 is set smaller than the diameter of other portions. The rear end of the connecting shaft 51 is fitted into a hole 43 formed in the base plate 40, so that the connecting shaft 51 is fixed to the base plate 40 and protrudes forward from the base plate 40. The connecting shaft 51 is disposed between the right strain gauge 42 and the right base plate fixing screw 62, and is disposed adjacent to the right side (outer side in the left-right direction) of the strain gauge 42.

[0021] The connecting tube portion 52 is formed integrally with the operation unit 31 of the operation panel member 30. The connecting tube portion 52 is formed in a substantially cylindrical shape with its axial direction aligned in the front-rear direction and protrudes rearward from the operation unit 31. As a result, a recess 52A that is open to the rear is formed inside the connecting tube portion 52, and the inner diameter of the recess 52A is set to be larger than the outer diameter of the connecting shaft 51. The connecting tube portion 52 is disposed coaxially with the connecting shaft 51, and the front portion of the connecting shaft 51 is inserted into the recess 52A of the connecting tube portion 52. In other words, the lengths of the connecting shaft 51 and the connecting tube portion 52 in the front-rear direction are set so that the connecting shaft 51 and the connecting tube portion 52 overlap in the front-rear direction. In addition, a gap G of a predetermined length is formed in the front-rear direction between the bottom surface of the recess 52A and the front end (tip) of the connecting shaft 51. The predetermined length gap G refers to a gap set to a length that will prevent contact between the bottom surface of the recess 52A and the front end (tip) of the connecting shaft 51, even if the lengths of the components change due to dimensional tolerances, assembly errors, etc. In other words, a predetermined gap G is formed in the front-to-rear (first) direction between the connecting shaft (first connecting portion) 51 and the connecting tubular portion (second connecting portion) 52.

[0022] The joint 53 is made of an adhesive or a potting material and is filled in the recess 52A of the connecting tube portion 52. Specifically, the liquid joint 53 is poured into the recess 52A through the opening of the recess 52A, and the front end (tip) of the connecting shaft 51 is immersed in the joint 53. When the poured joint 53 hardens, the connecting shaft 51 is embedded in the joint 53, and the connecting shaft 51 and the connecting tube portion 52 are joined by the joint 53 so that they cannot move relative to each other. As a result, when the operation unit 31 of the operation panel member 30 is touched (pressed) backward, the operating force is transmitted to the substrate 40 by the panel-side joint 50, causing the substrate 40 to deform. Therefore, the strain caused by the deformation of the substrate 40 is detected by the strain gauge 42, and the touch operation on the operation unit 31 is detected by the control unit.

[0023] (Regarding the base side connecting portion 60) The base-side connecting portion 60 is configured by the board fixing boss 61 formed on the base member 20 and the board fixing screw 62, as described above. The base-side connecting portion 60 fixes the board 40 to the base member 20, connecting the base member 20 and the board 40 so that they cannot move relative to each other. The strain gauge 42 of the board 40 is disposed in a position that does not overlap with the panel-side connecting portion 50 and the base-side connecting portion 60 when viewed from the front side.

[0024] (Action and effect) Next, the assembly procedure of the operation detection device 10 will be described, along with the functions and effects of this embodiment.

[0025] When assembling the operation detection device 10, first, the board 40 is fixed to the base member 20. Specifically, the board 40 is placed on the front side of the board fixing boss 61 of the base member 20, and the board fixing screw 62 is inserted into the board fixing hole 41 of the board 40 from the front side and screwed into the board fixing boss 61. In this way, the board 40 is fixed to the base member 20.

[0026] Next, the operation panel member 30 is fixed to the base member 20 while being connected to the substrate 40. Specifically, the operation panel member 30 is positioned so that the recess 52A of the connecting tube portion 52 in the operation panel member 30 opens vertically upward, and an adhesive or potting material, which is the joint portion 53, is poured into the recess 52A. Then, the base member 20 to which the substrate 40 is fixed is positioned vertically above the operation panel member 30, and the base member 20 is positioned so that the opening of the base member 20 faces the opening of the operation panel member 30 in the vertical direction. Then, the base member 20 is moved vertically downward, and the tip end of the connecting shaft 51 of the substrate 40 is inserted into the recess 52A of the panel-side connecting portion 50 and immersed in the joint portion 53 before hardening. Then, before the connecting portion 53 hardens, the panel fixing screw 33 is inserted into the base fixing hole 22 from above in the vertical direction and screwed into the panel-side fixing boss 32 of the operation panel member 30, and the operation panel member 30 is fixed to the base member 20 by the panel fixing screw 33. Thereafter, the connecting portion 53 hardens, so that the connecting shaft 51 and the connecting cylinder portion 52 are connected so as not to move relative to each other, and the assembly of the operation detection device 10 is completed.

[0027] When the operator touches (presses) the operation unit 31 of the operation panel member 30, the operation force toward the rear is transmitted to the substrate 40 by the panel-side connecting portion 50. This causes the substrate 40 to bend and deform toward the rear, and the strain generated in the substrate 40 is detected by the strain gauge 42. The detection signal detected by the strain gauge 42 is output to the control unit, which then detects the operation on the operation unit 31.

[0028] In the operation detection device 10, the operation panel member 30 and the substrate 40 are connected by a panel-side connecting portion 50. The panel-side connecting portion 50 includes a connecting shaft 51 provided on the substrate 40, a connecting tube portion 52 provided on the operation panel member 30, and a joining portion 53 that joins the connecting shaft 51 and the connecting tube portion 52. The joining portion 53 is formed of an adhesive or potting material, and after hardening, the joining portion 53 joins the connecting shaft 51 and the connecting tube portion 52 so that they cannot move relative to each other. Therefore, the joining portion 53 can absorb variations in the relative positions of the operation panel member 30 and the substrate 40 in the front-to-rear direction, which occur due to assembly errors and tolerances of each component. In other words, the substrate 40 fixed to the base member 20 and the operation panel member 30 can be connected while suppressing deformation of the substrate 40 due to variations in the relative positions of the operation panel member 30 and the substrate 40. This makes it possible to suppress variations in the initial detection value of the strain gauge 42 when the operation unit 31 is not being operated. Therefore, the threshold value for the detection value of the strain gauge 42 for determining whether or not a touch operation has been performed can be set to an appropriate value. As a result, operations on the operation unit 31 can be detected well. Therefore, the detection performance of the operation detection device 10 can be improved.

[0029] As described above, the joint 53 is made of adhesive or potting material, which allows for a relatively inexpensive structure to absorb variations in the relative positions of the operation panel member 30 and the substrate 40 in the front-to-rear direction that arise from assembly errors and tolerances of each part.

[0030] Furthermore, strain gauges 42 are provided on a substrate 40 separate from the operation panel member 30, and detect strain on the substrate 40 using strain gauges 42 to detect touch operations on the operation panel member 30. Therefore, for example, this effectively functions as a means for improving detection performance in a structure in which strain gauges 42 cannot be directly provided on the operation panel member 30.

[0031] Furthermore, the connecting cylinder portion 52 has a recess 52A that is open to the rear, and the joining portion 53 is filled in the recess 52A. The tip of the connecting shaft 51 is embedded in the joining portion 53. This allows the adhesive or potting material that forms the joining portion 53 to be pooled in the recess 52A during assembly of the operation detection device 10, while the tip of the connecting shaft 51 is immersed in the adhesive or potting material. This improves the ease of assembly of the operation detection device 10. Furthermore, after the joining portion 53 has hardened, the tip of the connecting shaft 51 is embedded, and the recess 52A can prevent the joining portion 53 from flowing out and deforming, so the connection between the connecting shaft 51 and the connecting cylinder portion 52 can be maintained in a good condition.

[0032] In addition, the strain gauges 42 are provided on the substrate 40. Therefore, the substrate 40 on which the electronic components are mounted can be used as a detection body that deforms in response to operations on the operation panel member 30. This can contribute to reducing the number of components, etc., compared to a configuration in which a detection body that deforms in response to operations on the operation panel member 30 is provided separately from the substrate 40.

[0033] Furthermore, the strain gauges 42 of the substrate 40 are arranged in positions that do not overlap the panel-side connecting parts 50 and the base-side connecting parts 60 when viewed from the front. This allows the strain gauges 42 to detect large strains occurring in the substrate 40, compared to, for example, a configuration in which the strain gauges 42 are arranged in positions that overlap the panel-side connecting parts 50 or the base-side connecting parts 60 when viewed from the front.

[0034] The substrate 40 is formed in a generally rectangular plate shape with the left-right direction as the longitudinal direction, and both left-right ends of the substrate 40 are connected to the base member 20 by the base-side connecting parts 60. The panel-side connecting parts 50 are disposed inside the base-side connecting parts 60 in the left-right direction and are located between the pair of base-side connecting parts 60 when viewed from the top-bottom direction. That is, the substrate 40 is supported at both ends, and an operating force on the operation panel member 30 is input between the support parts at both ends of the substrate 40. Therefore, when the operation panel member 30 is operated, the substrate 40 is deformed effectively starting from the base-side connecting parts 60, and the strain caused by the deformation of the substrate 40 can be detected effectively by the strain gauges 42.

[0035] Furthermore, corners of the outer periphery of the operation unit 31 of the operation panel member 30 are fixed to the base member 20. As a result, touch operations on the operation unit 31 can be detected by the strain gauges 42 while the outer periphery of the operation unit 31 is fixed to the base member 20. In other words, touch operations on the operation unit 31 can be detected by the strain gauges 42 while maintaining a favorable support state of the operation panel member 30. Furthermore, fixing the operation panel member 30 to the base member 20 increases positional variation between the operation panel member 30 and the substrate 40, but this positional variation can be absorbed by the panel-side connecting portion 50. In other words, even in a structure in which the operation panel member 30 is fixed to the base member 20, positional variation between the operation panel member 30 and the substrate 40 can be absorbed by the panel-side connecting portion 50. Furthermore, fixing the operation panel member 30 to the base member 20 prevents external force other than a touch operation from acting on the joint portion 53 of the panel-side connecting portion 50, even if the external force is applied to the operation panel member 30. This makes it possible to maintain the connected state of the panel-side connecting portion 50 in an even better state.

[0036] In this embodiment, the strain gauges 42 are provided on the substrate 40, but the component on which the strain gauges 42 are mounted is not limited to this. For example, instead of the substrate 40, a detection plate serving as an elastically deformable strain detection member may be fixed to the base member 20, and the strain gauges 42 may be provided on the detection plate. In this case, for example, the connecting shaft 51 of the panel-side connecting portion 50 may be formed integrally with the detection plate.

[0037] Furthermore, in the panel-side connecting portion 50 of this embodiment, the connecting shaft 51 is provided on the base plate 40, and the connecting cylinder portion 52 is provided on the operation panel member 30. Alternatively, the connecting shaft 51 may be provided on the operation panel member 30, and the connecting cylinder portion 52 may be provided on the base plate 40. In this case, the recess 52A of the connecting cylinder portion 52 is formed in a recessed shape that is open to the front side. Therefore, when assembling the operation detection device 10, the base member 20 can be placed vertically downward, and the base plate 40 and the operation panel member 30 can be assembled to the base member 20 in this order from the vertical upper side. This improves the ease of assembly of the operation detection device 10.

[0038] In the present embodiment, a connecting structure using a joining portion 53 made of an adhesive or potting material is applied to the panel-side connecting portion 50. However, this connecting structure may also be applied to the base-side connecting portion 60. That is, in this case, as shown in FIG. 5 , a connecting shaft 51 provided on the substrate 40 is fixed to the substrate 40 so as to protrude rearward from the substrate 40. A connecting tube portion 52 is integrally formed with the bottom wall of the base member 20 and protrudes frontward from the bottom wall. The connecting portion 53 made of an adhesive or potting material is injected into a recess 52A of the connecting tube portion 52. In the example shown in FIG. 5 , a substrate fixing boss 61 is formed on the operation panel member 30, and the substrate 40 is fixed to the operation panel member 30 by a substrate fixing screw 62 threaded into the substrate fixing boss 61.

[0039] In the example shown in FIG. 5 , the substrate 40 is first fixed to the operation panel member 30, and then the operation panel member 30 with the substrate 40 fixed thereto is connected to the base member 20. Specifically, a liquid joint 53 made of an adhesive or potting material is poured into the recess 52A of the connecting tube portion 52, and the leading end (rear end) of the connecting shaft 51 is immersed in the joint 53. Next, before the joint 53 hardens, the operation panel member 30 is fixed to the base member 20 with the panel fixing screw 33. Thereafter, the joint 53 hardens, connecting the substrate 40 and the base member 20 so that they cannot move relative to each other. This allows the substrate 40 fixed to the operation panel member 30 to be connected to the base member 20 while suppressing deformation of the substrate 40. As a result, even in the example shown in FIG. 5 , variation in the initial detection value of the strain gauge 42 when the operation panel member 30 is not being operated can be suppressed. Therefore, similar to the present embodiment, the detection performance of the operation detection device 10 can be improved. Furthermore, in the example shown in FIG. 5, the above-described connecting structure is applied to the base-side connecting portion 60 , but the above-described connecting structure may be applied to both the panel-side connecting portion 50 and the base-side connecting portion 60 .

[0040] The present invention is not limited to the above-described embodiment, and various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0041] 10 Operation detection device 20 Base member 30 Operation panel member 40 Insulating substrate (strain detection member) 42 Strain gauge (strain sensor) 50 Panel side connection part 51 Connection shaft (1st connection part) 52 Connecting cylinder part (second connecting part) 53 Joint 60 Base side connection part

Claims

1. an operation panel member configured to be touch operable on one side in a first direction; a strain detection member provided on one side of the operation panel member in the first direction and having a strain sensor; a base member provided on one side of the strain detection member in the first direction; a panel-side connecting portion that connects the operation panel member and the strain detection member; a base-side connecting portion that connects the strain detection member and the base member; Equipped with At least one of the panel-side connecting portion and the base-side connecting portion is a first connecting portion provided on one of the members to be connected; a second connecting portion provided on the other member to be connected; a connecting portion configured by an adhesive or a potting material and connecting the first connecting portion and the second connecting portion; It is composed of An operation detection device in which the first connecting portion and the second connecting portion are connected by the connecting portion after hardening so that they cannot move relative to each other.

2. one of the first connecting portion and the second connecting portion is formed in a concave shape having a recess that is open to the other side of the first connecting portion and the second connecting portion, The operation detection device according to claim 1 , wherein the connecting portion is filled in the recess, and a part of the other of the first connecting portion and the second connecting portion is embedded in the connecting portion.

3. The operation detection device according to claim 2 , wherein the recess is open to the other side in the first direction.

4. 4. The operation detection device according to claim 1, wherein the strain detection member is an insulating substrate on which electronic components can be mounted.

5. An operation detection device according to any one of claims 1 to 3, wherein the strain sensor is arranged in a position that does not overlap with the panel-side connecting portion and the base-side connecting portion when viewed from the first direction.

6. a direction perpendicular to the first direction is defined as a second direction, and a direction perpendicular to the first direction and the second direction is defined as a third direction; An operation detection device as described in claim 5, wherein, when viewed from the second direction, the base side connecting portion connects both ends of the strain detection member in the third direction to the base member, and the panel side connecting portion is located between a pair of the base side connecting portions.

7. 2. The operation detection device according to claim 1, wherein the operation panel member is an interior panel of a vehicle.

8. 8. The operation detection device according to claim 1, wherein the operation panel member is fixed to the base member.

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