JP2014161843A - Plate spring - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plate spring for a vibration generating device which can apply large vibration, and can apply sharp vibration.SOLUTION: A plate spring 10 is formed of a long plate material, and includes: a recessed part 1 which protrudes from one surface side to the other surface side in a center of a longitudinal direction; a pair of protruded parts 2 which is formed so as to put the recessed part 1 in between in the longitudinal direction and protrudes to the one surface side; a pair of inverting parts 3 which is extended from the pair of protruded parts 2 in directions of separating from the recessed part 1 along the longitudinal direction, has fixed parts 4 fixed to a vibration generating device at tip ends in an extending direction, and is inclined so that positions of the fixed parts 4 are on the other surface side from the recessed part 1 and the pair of protruded parts 2; and a reinforcing part which is formed on a part of the inverting part 3 to restrict deformation of the inverting part 3. When pressing force from the one surface side of the recessed part 1 is applied in the state in which the fixed parts 4 are fixed, the plate spring inverts to the other surface side.

Description

  The present invention relates to a leaf spring used in a vibration generating device, and more particularly to a leaf spring for a vibration generating device for transmitting an operation feeling of a touch panel to a finger or a hand.

  Conventionally, a vibration generating device has been used to notify a user of an incoming call of a mobile phone by vibration, or to give an operation feeling such as a click feeling by vibration to an operator who performs an input operation by touching a touch panel. Widely used.

  In recent years, with the spread of tablet terminals, navigation devices, and the like that have a larger display device than conventional portable devices, there is a demand for a vibration generating device that can support devices with larger display devices.

  Patent Document 1 describes a leaf spring 900 used in a vibration type alarm as shown in FIG. The leaf spring 900 is a substantially annular strip 902 that surrounds the central hole 901, and the substantially annular strip 902 is provided with substantially spiral plate-like separation holes 903, 904, 905 that are arranged in a trigonal manner. A technology of a leaf spring used for a vibration type alarm that lowers the natural frequency to a low frequency by the lightening portions by the three strip plate separation holes 903, 904, and 905 is disclosed.

JP 2003-61173 A

  In the above-described conventional leaf spring, a vibration body in which a magnet or the like is attached to the leaf spring is driven by electromagnetic force, and vibration is generated by vibrating at a frequency close to the natural frequency of the leaf spring. However, in order to obtain a large vibration, it is necessary to increase the weight of the vibrating body including the leaf spring and the magnet fixed on the leaf spring. If the vibrating body is heavier due to the vibration caused by swinging the vibrating body attached to the leaf spring, the rise of the vibration from the start of driving until the vibration becomes large is delayed, and this rising of the vibration It is transmitted to the user. For this reason, there has been a problem that it is impossible to give a sharp vibration such that the vibration rises sharply.

  The present invention solves the above-described problems, and an object of the present invention is to provide a leaf spring for a vibration generator that can give a large vibration and can give a sharp vibration. .

  In order to solve this problem, the leaf spring of the present invention is a leaf spring used in a vibration generating device, and is made of a long plate material. The plate material is located at the center in the longitudinal direction from one surface side. A concave portion projecting to the other surface side, a pair of convex portions projecting to the one surface side, formed so as to sandwich the concave portion in the longitudinal direction, and from the pair of convex portions along the longitudinal direction A fixing portion that extends in a direction away from the concave portion and that is fixed to the vibration generating device is formed at a tip in the extending direction, and the position of the fixing portion is on the other surface side than the concave portion and the pair of convex portions. A pair of reversing portions inclined so as to be, and a part of the reversing portion is provided with a reinforcing portion that restricts deformation of the reversing portion, and the one of the concave portions is fixed in a state where the fixing portion is fixed. By applying a force to press from the surface side of the other surface side Characterized in that it reversed.

  According to this, in the leaf spring of the present invention, when a force pressing from one surface side of the concave portion is applied in a state where the fixing portion is fixed, the inversion portion bends and deforms, but a part of the inversion portion Since the reinforcement part which regulates a deformation | transformation of an inversion part is provided in this, the deformation | transformation of this part is regulated. Therefore, when the reversing part is reversed, the whole reversing part jumps from the fixed part provided at the tip of the reversing part and can be reversed by buckling phenomenon, so that the reversal force when the leaf spring is reversed Can be increased. Thus, when applied to a vibration generator, a large vibration can be applied. In addition, the concave part provided in the center in the longitudinal direction with the force that the reversing part reverses due to the jumping buckling phenomenon can directly apply vibration to the object to be vibrated, so that the vibration rises sharply. A certain vibration can be given.

  The leaf spring of the present invention is characterized in that the reinforcing portion is formed by extending a part of the reversing portion from both side ends thereof, and also serves as a guide during deformation.

  According to this, with a simple structure in which a part of the reversing part extends from both side ends thereof, it is possible to provide a reinforcing part that restricts deformation of the reversing part, and the extended reinforcing part guides the movement of the reversing part. Can be used as a guide. Accordingly, it is possible to realize a leaf spring having both a function of restricting deformation in a range where the reinforcing portion of the reversing portion is provided and a function of guiding movement due to deformation of the reversing portion.

  In the leaf spring of the present invention, the reinforcing portion is formed by bending the plate material to the one surface side along the longitudinal direction.

  According to this, since the reinforcing part is formed by bending the plate material to one surface side along the longitudinal direction, a wall surface guided by the reinforcing part can be provided along the direction in which the reversing part moves, The movement of the reversing part can be guided.

  According to the leaf spring of the present invention, it is possible to provide a leaf spring for a vibration generator that can give a large vibration and can give a sharp vibration.

It is an external appearance perspective view which shows the vibration generator using the leaf | plate spring which concerns on embodiment of this invention. It is a disassembled perspective view which shows the structure of the vibration generator using the leaf | plate spring which concerns on embodiment of this invention. It is a perspective view which shows the whole shape of the leaf | plate spring which concerns on embodiment of this invention. It is a side view explaining operation | movement of a leaf | plate spring. It is a figure explaining the leaf | plate spring of a prior art.

[First Embodiment]
Below, the leaf | plate spring 10 in 1st Embodiment is demonstrated.

  First, the configuration of the vibration generator 100 using the leaf spring 10 according to the present embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view showing an external appearance of a vibration generator 100 using a leaf spring 10 according to the present embodiment. FIG. 2 is an exploded perspective view of the vibration generator 100 using the leaf spring 10 according to the present embodiment.

  As shown in FIG. 1, in the vibration generating device 100, the driving unit 60 is held by the base 50 a of the housing 50, and the elastic sheet 70 is attached to the leg 50 d provided on the side wall 50 c of the housing 50. It has been. Further, as shown in FIG. 2, the vibration generator 100 includes a drive unit 60, a leaf spring 10, a housing 50, an elastic sheet 70, and an elastic body 80.

  The leaf spring 10 is supported by the housing 50 of the vibration generator 100 with the fixing portion 4 of the leaf spring 10 being fixed. Further, when the movable part 61 of the driving part 60 held by the base part 50a of the housing 50 is driven from the Z1 side to the Z2 side shown in FIG. The recess 1 is pressed.

  Next, the structure of the leaf | plate spring 10 in this embodiment is demonstrated using FIG.3 and FIG.4. FIG. 3 is a perspective view showing the overall shape of the leaf spring 10.

  The plate spring 10 is made of an elastic material for a spring such as phosphor bronze or stainless steel, and is formed by bending a long plate material as shown in FIG. At the center in the longitudinal direction, a recess 1 is provided that protrudes from the Z1 side that is one surface to the Z2 side that is the other surface, and is formed so as to sandwich the recess 1 in the longitudinal direction. A pair of convex portions 2 projecting linearly in the width direction of the plate material are provided.

  From the pair of convex portions 2, a pair of inversion portions 3 extending in the direction away from the concave portion 1 along the longitudinal direction is formed. The reversing portion 3 is formed with a fixing portion 4 fixed to a casing 50 (see FIGS. 1 and 2) that supports the leaf spring 10 of the vibration generating device at the tip in the extending direction. Is inclined so as to be closer to the other surface than the concave portion 1 and the pair of convex portions 2.

  The fixing portion 4 is formed by bending the tip of the reversing portion 3 toward the Z1 side, which is one surface, and is attached to a housing 50 that supports the leaf spring 10 by screwing or the like. Is provided.

  Further, the reinforcing member 5 is formed on a part of the reversing part 3 by bending the plate material along the longitudinal direction so that a part of the reversing part 3 extends from the both side ends to one side Z1 side. It is formed and the range in which the reinforcing part 5 of the reversing part 3 is provided is regulated so as not to be deformed.

  Next, the operation of the leaf spring 10 will be described with reference to FIG. FIG. 4A is a diagram illustrating a state before the leaf spring 10 is operated, and FIG. 4B is a diagram illustrating a state in which the leaf spring is reversed. In the description of the operation, the description will be made assuming that the fixing portion 4 is fixed to the casing 50 that supports the leaf spring 10.

  In a state (normal state) in which no external operating force is applied to the leaf spring 10, the leaf spring 10 remains in its initial shape and is not deformed as shown in FIG.

  When a force F that presses from the Z1 side to the Z2 side shown in FIG. 4A is applied to the concave portion 1 of the leaf spring 10, the fixing portion 4 of the leaf spring 10 is fixed. 1 moves in the Z2 direction. At this time, since the elastic force of the reversing part 3 and the deformation of the range in which the reinforcing part 5 of the reversing part 3 is provided are restricted, a repulsive force that tries to push the recess 1 back to the Z1 side is generated.

  If the force F that further presses against the repulsive force is continuously applied, deformation in the range where the reinforcing portion 5 of the reversing portion 3 is provided is restricted, so that it is provided at the tip of the reversing portion 3 connected to the fixing portion 4. The entire reversing part 3 jumps from the fixed part 4 side and is reversed by a buckling phenomenon. As a result, as shown in FIG. 4B, the reversing portion 3 is reversed from the tip in the extending direction, and the back surface of the concave portion 1 collides with the vibrating body 90. The impact due to this collision is applied to the vibrating body 90.

  When the force F applied to the concave portion 1 is removed from the plate spring 10 in the reversed state, the plate spring 10 returns to the normal state by the restoring force of the reversed portion 3.

  As described above, by applying the force F directed to the Z2 side to the concave portion 1 of the leaf spring 10, the leaf spring 10 can be jumped and reversed by the buckling phenomenon, and the force F applied to the concave portion 1 It is possible to return to the normal state by removing. Therefore, the vibration 90 can be continuously vibrated by repeatedly applying or removing the force F that intermittently presses the concave portion 1 of the leaf spring 10.

  The reinforcing portion 5 is formed by bending a plate material along the longitudinal direction so that a part of the reversing portion 3 extends from both side ends to the Z1 side which is one surface. Therefore, as shown in FIG. 2, when the guide wall 51 is provided at a position corresponding to the reinforcing portion 5 of the housing 50, the reinforcing portion 5 provided on the leaf spring 10 is in a period from the normal state to the inverted state. It can move in a state guided by the guide wall 51. Therefore, a simple structure in which a part of the reversing part 3 extends from both side ends thereof can be provided with the reinforcing part 5 that restricts deformation of the reversing part 3, and the extended reinforcing part 5 is moved by the reversing part 3. It can be used as a guide for guiding. Therefore, it is possible to realize a leaf spring having both a function of restricting the deformation of the range where the reinforcing part 5 of the reversing part 3 is provided and a function of guiding the movement due to the deformation of the reversing part 3.

  Since the fixed portion 4 is formed by bending the tip of the reversing portion 3 toward the Z1 side that is one surface, the casing 50 that supports the leaf spring 10 is connected to the one surface side of the leaf spring 10. Can be held facing each other.

  Hereinafter, the effect by having set it as this embodiment is demonstrated.

  The plate spring 10 of the present embodiment is made of a long plate material, and the plate material sandwiches the concave portion 1 projecting from one surface side to the other surface side in the longitudinal direction and the concave portion 1 in the longitudinal direction. A pair of protrusions 2 protruding to one surface side, and extending from the pair of protrusions 2 in the direction away from the recess 2 along the longitudinal direction, and at the tip of the extension direction to the vibration generator A fixed part 4 to be fixed is formed, a pair of inversion parts 3 inclined such that the position of the fixing part 4 is on the other surface side of the concave part 1 and the pair of convex parts 2, and a part of the inversion part 3 Is provided with a reinforcing portion 5 that restricts the deformation of the reversing portion 3, and with the fixing portion 4 being fixed, by applying a pressing force from one surface side of the recess 1, the other surface side is It was configured to invert.

  Accordingly, when a force pressing from one surface side of the recess 1 is applied in a state where the fixing portion 4 is fixed, the reversing portion 3 is bent and deformed, but a part of the reversing portion 3 includes a reversing portion. 3 is provided, so that the deformation is restricted. Therefore, when the reversing part 3 is reversed, the entire reversing part 3 jumps from the fixed part 4 side provided at the tip of the reversing part 3 and reverses due to a buckling phenomenon. The reversal force can be increased. Thus, when applied to a vibration generator, a large vibration can be applied. In addition, the concave portion 1 provided in the center in the longitudinal direction with a force that reverses the reversing portion 3 due to the jumping buckling phenomenon can directly apply a shock to the vibrating body 90 to give vibration. Therefore, it is possible to give a sharp vibration in which the vibration rises sharply.

  Further, in the leaf spring 10 of the present embodiment, the reinforcing portion 5 is formed such that a part of the reversing portion 3 extends from both side ends thereof and also serves as a guide for movement due to deformation of the reversing portion 3.

  A simple structure in which a part of the reversing part 3 extends from both side ends thereof can be provided with a reinforcing part 5 that restricts deformation of the reversing part 3, and the extended reinforcing part 5 guides the movement of the reversing part 3. Can be used as a guide. Therefore, it is possible to realize the leaf spring 10 having both the function of restricting the deformation of the range where the reinforcing part 5 of the reversing part 3 is provided and the function of guiding the movement due to the deformation of the reversing part 3.

  Moreover, in the leaf | plate spring 10 of this embodiment, the reinforcement part 5 formed by bending the board | plate material which comprises the leaf | plate spring 10 to the one surface side along the longitudinal direction.

  For this reason, the guide wall 51 in which the reinforcement part 5 is guided can be provided along the direction in which the reversing part 3 moves, and the movement of the reversing part 3 can be guided.

  As described above, according to the leaf spring 10 of the present embodiment, it is possible to provide a leaf spring for a vibration generator that can give a large vibration and can give a sharp vibration. Can do.

  As described above, the leaf spring 10 according to the embodiment of the present invention has been specifically described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. It is possible.

  (1) In the present embodiment, the concave portion 1 provided in the leaf spring 10 has been described by showing an example in which the concave portion 1 is linearly formed in the width direction of the plate material, but may be formed in a hemispherical shape. . In this case, the driving body exemplified by the elastic body 80 for applying a pressing force to the recess can be reliably held near the center of the recess.

  (2) In the present embodiment, the fixing portion 4 has been described by showing an example in which the tip of the reversing portion 3 is bent toward the Z1 side which is one surface, but the opposite (Z2) It may be bent toward the side or may be fixed without being bent. Any structure can be used as long as it can be attached to the housing and can support the leaf spring in a structure that does not prevent the movement of the reversing unit 3 and the buckling reversal according to the conditions of use, such as the structure of the applied vibration generator.

  (3) In the present embodiment, the fixing unit 4 has been described by showing an example in which the mounting hole 4a for fixing to the housing 50 supporting the leaf spring 10 by screwing or the like is provided. The fixing means to the body may not be obtained by screwing, and may be fixed by caulking, for example. Further, the mounting hole 4a is not necessarily provided, and may be changed according to the mounting method.

DESCRIPTION OF SYMBOLS 1 Concave part 2 Convex part 3 Inversion part 4 Fixing part 4a Mounting hole 5 Reinforcement part 10 Leaf spring 50 Support body 51 Guide wall 90 Vibrated body

Claims (3)

A leaf spring used in a vibration generator,
It consists of a long plate material, and the plate material has a concave portion protruding from one surface side to the other surface side at the center in the longitudinal direction,
A pair of convex portions formed so as to sandwich the concave portion in the longitudinal direction and projecting to the one surface side;
A fixing portion is formed to extend from the pair of convex portions in the direction away from the concave portion along the longitudinal direction, and is fixed to the vibration generating device at a tip in the extending direction. A pair of inversion parts inclined so as to be on the other surface side of the concave part and the pair of convex parts;
A part of the reversing part is provided with a reinforcing part for restricting deformation of the reversing part
A leaf spring characterized in that in a state where the fixing portion is fixed, a force pressing from one surface side of the concave portion is applied to reverse the other surface side.   2. The leaf spring according to claim 1, wherein the reinforcing portion is formed such that a part of the reversing portion extends from both side ends thereof and also serves as a guide during deformation. The leaf spring according to claim 2, wherein the reinforcing portion is formed by bending the plate material to the one surface side along the longitudinal direction.

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