JP7059133B2 - Egg shell cracker - Google Patents

Description

The present invention relates to an egg shell cracker.

Shell crackers for easily breaking shells of raw eggs, boiled eggs, hot spring eggs, etc. are known. For example, Patent Document 1 discloses a shell cracker that cracks a shell by partially crushing the shell, and Patent Document 2 discloses a shell cracker that cracks a shell by cutting the shell. There is.

The shell splitting device described in Patent Document 1 includes a cylindrical main body, annular finger pads provided at both ends of the main body, and a corrugated blade attached inward to the lower end of the main body. By holding the egg inside the body and tightening the finger pads, the blade pushes the shell of the egg and crushes the shell.

On the other hand, the shell splitting device described in Patent Document 2 includes an annular rotating body and a plurality of cutting blades arranged on the rotating body. By rotating the rotating body, this shell splitting device rotates the cutting blade fixed to the rotating body and cuts the shell in an annular shape.

Japanese Unexamined Patent Publication No. 2008-272407 Japanese Unexamined Patent Publication No. 2010-08716

The shell cracker described in Patent Document 1 cracks the shell and cracks the shell by pressing a wavy blade. However, since the force applied to the shell changes depending on how the finger rest is tightened, there is a problem that fragments of the egg shell are unexpectedly mixed into the edible portion depending on the degree of force applied.

Further, in the shell splitting device described in Patent Document 2, the shell is cut by a rotating cutting blade. However, since it is difficult to control the force of applying the blade to the shell, there is a problem that the fragments of the shell are unexpectedly mixed into the edible portion depending on the degree of force applied.

The present invention has been made in view of such problems, and an object of the present invention is to provide an egg cracker in which shell fragments are less likely to be mixed into an edible portion.

In order to achieve the above object, the egg shell cracker according to the first aspect of the present invention is
A support part that supports the egg and
A hitting part for hitting the egg shell,
An elastic member fixed to the batter and
A guide portion arranged in the support portion, guiding the hitting portion and the elastic member by a predetermined path along the egg supported by the support portion, and having a plurality of uneven portions along the path, and a guide portion.
While the elastic member is in contact with the uneven portion, the striking portion and the elastic member are moved along the path according to the guidance by the guide portion, so that the elastic member is elastic due to contact with the plurality of uneven portions. With the deformation, the driving part that causes the hitting part to hit the egg supported by the supporting part multiple times,
To prepare for.

According to the present invention, regardless of the magnitude of the force applied to the device for breaking the egg shell, a constant striking force is applied to the shell, so that the crushed shell fragments do not mix into the edible portion.

(A) is a perspective view of the egg shell cracker according to the first embodiment of the present invention, and (B) is a cross-sectional view taken along the line A1-A1 of the egg shell cracker shown in (A). FIG. 3 is a cross-sectional view taken along the line A2-A2 of the egg shell cracker shown in FIG. 1 (A). (A) is a diagram for explaining the shape of the teeth of the egg shell cracker shown in FIG. 2, and (B) is a developed view of a leaf spring and a hammer in the egg shell cracker shown in FIG. 1 (B). Is. It is an operation explanatory diagram of the egg shell cracker which concerns on Embodiment 1, (A) to (C) are the operation which breaks an egg shell, (D) is an explanatory diagram of the operation which stores a hammer. (A) is a perspective view of the egg shell cracker according to the second embodiment of the present invention, and (B) is a view taken along the line BB of the shell cracker in the egg shell cracker shown in (A). be. (A) is a view taken along the line CC of the shell cracker in the egg shell cracker shown in FIG. 5 (A), (B) to (D) are actions of breaking the egg shell, and (E) is (E). It is a DD arrow view explanatory view of the operation of accommodating a hammer in A). (A) is a perspective view of the egg shell cracker according to the third embodiment of the present invention, and (B) is an FF arrow view of the shell cracker in the egg shell cracker shown in (A). be. (A) is a perspective view of the egg shell cracker according to the fourth embodiment of the present invention, and (B) is a GG arrow view of the main body of the egg shell cracker shown in (A). , (C) are HH arrow views of the shell cracker in the egg cracker shown in (A). (A) is a perspective view of the egg shell cracker according to the fifth embodiment, (B) is an HH sectional view of the main body of the egg shell cracker shown in (A), and (C). Is an electric circuit diagram of the egg shell cracker shown in (A). It is a partially enlarged view of the shell cracker part of the egg cracker which concerns on Embodiment 6 of this invention. (A) is an electric circuit diagram of the egg shell cracker according to one modification of the present invention, and (B) is a partially enlarged view of gears of the shell cracker of the egg shell cracker.

Hereinafter, the egg shell cracker according to the embodiment of the present invention will be described with reference to the drawings.

(Embodiment 1)
As shown in FIG. 1A, the egg shell cracker 1 according to the first embodiment includes a main body portion 21, a handle 22 extending from the main body portion 21, and a lid portion 23 covering the upper portion of the main body portion 21. It is provided with a handle 24 erected on the lid portion 23. In this egg shell cracker 1, the handle 24 is operated to rotate the lid portion 23, and the egg E arranged in the central hole of the main body portion 21 is constant with a constant strength by a hammer 62 (not shown). It is a device that breaks the shell of egg E by hitting it all around at the pitch of. In the following description, the expressions "upper" and "lower" may be used based on the arrangement shown in FIG. 1 (A).

Hereinafter, the configuration of each part of the egg shell cracker 1 will be described.
As shown in FIG. 1B in the cross section taken along the line A1-A1 of FIG. 1A, the main body portion 21 is formed in a cylindrical shape and has a through hole in the central portion thereof for accommodating the egg E to be processed. The inner peripheral surface of the main body 21 is formed in a curved shape in which the holes become narrower from the lower part to the upper part according to the outer shape of the shell of the egg E to be accommodated. The main body 21 does not completely cover the egg E, but houses the upper part and the lower part of the egg E in an exposed state.

A flange is formed at the upper end of the main body 21. A shell split portion 50 for hitting and breaking the shell of the egg E is formed on this flange.

As shown in the cross section taken along the line A2-A2 of FIG. 1A in FIG. 2, the shell split portion 50 is formed with an annular groove portion 51 having a constant width, which is partitioned by an inner wall 52 and an outer wall 53. .. The inner wall 52 and the outer wall 53 are formed concentrically with the central axis CA of the through hole of the main body portion 21.

A plurality of teeth 54 are formed in the groove portion 51 along the inner wall 52 toward the outer side in the radial direction at a constant pitch and a constant size. Each tooth 54 has an inclined surface 55 that is close to a right angle to the tangent line and an inclined surface 56 that is gentle to the tangent line with respect to the tangent line of the circle drawn by the inner wall 52.
The inclined surfaces 55 and 56 correspond to the first surface and the second surface in the claim.

A leaf spring 61 and a hammer 62 are arranged between the inner wall 52 and the outer wall 53 in the groove portion 51.

The leaf spring 61 is made of a metal plate. The leaf spring 61 is housed in the groove 51 and is formed in a hairpin shape in a plan view. The leaf spring 61 is locked to a pin 25 described later at the bent portion 63, the outer wall 53 is pressed by the one end portion 64, and the other end portion 65 Press the tooth 54.

One end 64 of the leaf spring 61 is bent at an acute angle inward in the radial direction at the bending point. As will be described later, the bent portion 67 is formed to be relatively long so as to engage with the pin 25 when the pin 25 moves counterclockwise. Further, the other end portion 65 of the leaf spring 61 is bent inward in the radial direction so as to be able to enter between the adjacent teeth 54 and the teeth 54.

With such a configuration, when the pin 25 moves clockwise, the leaf spring 61 is pushed by the pin 25 and moves clockwise. At this time, the bending point of one end 64 of the leaf spring 61 slides on the outer wall 53 of the groove 51. On the other hand, the other end portion 65 moves radially outward along the inclined surface 56 of the tooth 54, and when it gets over the convex portion which is the most protruding portion of the tooth 54, the adjacent tooth 54 and the tooth are caused by the spring force. The operation of immersing in the recess between 54 is repeated.

On the other hand, when the pin 25 moves counterclockwise, the pin 25 moves away from the bent portion 63 of the leaf spring 61, collides with and is guided by the other end portion 65, and approaches the one end portion 64. The leaf spring 61 rotates around one end portion 64 so that the bent portion 63 approaches the outer wall 53, and the other end portion 65 does not move in a state of being in contact with the inclined surface 56 of the teeth 54. Therefore, the pin 25, the groove 51, and the leaf spring 61 form a kind of ratchet structure in which the leaf spring 61 can move clockwise but cannot move counterclockwise.
The pin 25 functions as an engaging pin in the claim.

An example of a specific embodiment of the tooth 54 for realizing this ratchet structure will be described.
As shown in FIG. 3A, a virtual plane passing through both the central axis CA of the central hole of the main body 21 and the convex portion of the specific tooth 54 is defined as a reference plane RP, and the reference plane RP and the inclined surface 55 Let θ1 be the angle formed, and θ2 be the angle formed by the reference plane RP and the inclined surface 56.

Each tooth 54 is formed so that the angle formed by the inclined surface 55 and the inclined surface 56 is θ1 <θ2. θ1 is preferably less than 15 °. The angle (θ2-θ1) formed by the inclined surface 55 and the inclined surface 56 is, for example, 60 °.

As shown in FIGS. 1B and 2, the hammer 62 is fixed to the upper side of the inner piece 66 of the leaf spring 61 at a right angle of approximately 90 °, and is arranged so as to face inward in the radial direction. The corners of the tip of the hammer 62 for hitting the shell of the egg E are formed in the shape of a rounded plate. In FIG. 2, the hammer 62 is located above the cut surface and cannot be directly visually recognized, so it is shown by a alternate long and short dash line.

The hammer 62 is fixed to the piece 66 of the leaf spring 61, and its position is affected by the position and shape of the leaf spring 61. As described above, when the pin 25 moves clockwise, the other end 65 of the leaf spring 61 moves radially outward along the inclined surface 56 of the tooth 54, and when it gets over the apex of the tooth 54, it has a diameter. It suddenly displaces inward in the direction. Along with this movement, the hammer 62 retreats once with respect to the egg E and then advances, protrudes beyond the upper end of the inner wall 52 into the through hole of the main body 21, and hits the shell of the egg E. Further, when the pin 25 moves counterclockwise, it retracts with the rotation of the leaf spring 61 and retreats from the through hole of the main body portion 21. The plate-shaped portion at the tip of the hammer 62 is arranged so as to be parallel to the forward and backward directions accompanying the movement of the leaf spring 61.

The leaf spring 61 and the hammer 62 can be integrally formed. For example, a work having the shape shown in the developed view of FIG. 3B can be cut out from one iron plate and bent to form a leaf spring 61 and a hammer 62. The detailed shape, properties, arrangement, etc. of the leaf spring 61 and the hammer 62 for causing a necessary and sufficient impact to break the shell of the egg E are obtained by simulation or trial production.

The main body portion 21 is a support portion according to the claim, the groove portion 51 is a guide portion according to the claim, the tooth 54 is an uneven portion according to the claim, the leaf spring 61 is an elastic member according to the claim, and the hammer 62 is the claim. Each functions as a striking part in.

The handle 22 shown in FIG. 1A is fixed to the main body portion 21 and is gripped when the user operates the egg shell cracker 1.

The lid portion 23 has a hole for accommodating the egg E in the center, and is formed as a whole in an annular shape centered on the central axis CA of the main body portion 21.

As shown in FIG. 1 (B), the lid portion 23 is arranged so as to cover the flange portion at the upper end of the main body portion 21 from the upper surface and the side surface, and the lid portion 23 is the upper end surface of the outer wall 53 of the shell split portion 50. It is slidably mounted on the flange. However, a gap larger than the thickness of the hammer 62 is formed between the upper end surface of the inner wall 52 and the lower surface of the lid portion 23. The hammer 62 can advance through this gap into the through hole and hit the egg E.

A cylindrical pin 25 shown in FIG. 2 is erected on the lower surface of the lid portion 23. The pin 25 is inserted into the groove 51 and engages with the leaf spring 61.
As shown in FIGS. 1A and 1B, a part of the lid portion 23 is formed in a shape protruding outward in the radial direction, and a handle 24 is rotatably supported here. The handle 24 is rotatably fixed to the lid 23 with screws, washers, nuts, etc. on the support shaft. The user can pinch the handle 24 and rotate the lid 23 around the central axis CA. By this rotation operation, the pin 25 also rotates in the groove 51, and along with this rotation, the leaf spring 61 and the hammer 62 are moved in the groove 51, and the hammer 62 is moved forward and backward.

Next, the operation of cracking the shell of the egg E using the egg shell cracker 1 having the above configuration will be described.

First, as a preparation, the egg E is arranged so that the longitudinal direction of the egg E faces the vertical direction. Next, the main body 21 is put on the egg E, and as shown in FIGS. 1A and 1B, the inner wall of the main body 21 is brought into contact with the egg E to support the egg E.

Next, while the egg E is supported by the main body portion 21, the handle 24 is grasped and the lid portion 23 is rotated clockwise in a plan view. As the lid portion 23 rotates, the pin 25 rotates in the groove portion 51. By the rotation of the pin 25, the leaf spring 61 also rotates in the groove 51. Along with this rotation, the leaf spring 61 is periodically elastically deformed by the stress from the uneven portion formed by the row of teeth 54 on the other end 65 of the leaf spring 61. Due to the elastic deformation of the leaf spring 61, the relative position and orientation of the piece 66 with respect to the inner wall 52 changes periodically, and the hammer 62 continuously hits the shell while moving along the outer shape of the egg E. Therefore, in the shell of the egg E, a row of impact marks, that is, a row of minute crushed portions is formed like a cut line.

When the batter trace sequence for one round is completed, the lid portion 23 is rotated counterclockwise in a plan view. Then, the pin 25 rotates counterclockwise, the engagement relationship with the leaf spring 61 changes, the leaf spring 61 rotates, and the hammer 62 retracts. In this state, the egg E is removed from the main body 21 and the shell is removed along the striking trace sequence.

The operation of this example will be described in more detail with reference to FIG.
When the user rotates the handle 24 clockwise, the pin 25 engages with the bent portion 63 of the leaf spring 61 and moves the leaf spring 61 in the clockwise direction. As shown enlarged in FIG. 4A, the leaf spring 61 presses the outer wall 53 at one end 64 by the spring force, and the teeth formed along the inner wall 52 at the other end 65. Press 54. When the pin 25 moves due to the rotation of the lid portion 23 and the leaf spring 61 moves, the one end portion 64 slides on the outer wall 53 and the other end portion 65 slides on the teeth 54. When the other end portion 65 of the tooth 54 comes into contact with the portion of the tooth 54 that protrudes most in the radial direction, the leaf spring 61 is in the most compressed state in the radial direction and stores the maximum elastic energy.

When the handle 24 is rotated clockwise as it is, as shown in FIG. 4 (B), the other end portion 65 of the leaf spring 61 is inserted into the most radially retracted portion of the tooth 54, and the leaf spring 61 is inserted. Is released from the compressed state. Since the user keeps turning the handle 24, the transition from the state of the leaf spring 61 drawn in FIG. 4A to the state of the leaf spring 61 drawn in FIG. 4B is completed in a short time. That is, the elastic energy stored in the leaf spring 61 due to compression is released at once, and along with this, the piece 66 of the leaf spring 61 also moves greatly to the inner wall 52 side, and the hammer 62 fixed to the piece 66 is the inner wall. Go beyond 52 and move forward in the direction of the central CA.

As the hammer 62 advances, the tip of the hammer 62 collides with the shell of the egg E and hits the egg E. As a result, the shell of egg E is destroyed in a minute region.
Further, when the handle 24 is rotated clockwise, as shown in FIG. 4C, the other end portion 65 of the leaf spring 61 is in contact with the teeth 54, while the one end portion 64 of the leaf spring 61 is in contact with the outer wall 53. , The leaf spring 61 is compressed again in the radial direction and begins to store elastic energy.

While the user keeps rotating the handle 24 clockwise, the leaf spring 61 repeats the change of the state shown in FIGS. 4A to 4C. Therefore, as the user rotates the handle 24 in the clockwise direction, the hammer 62 connected to the leaf spring 61 repeatedly hits and retracts by advancing in the radial direction while moving in the circumferential direction, and becomes the shell of the egg E. Repeatedly hitting continuously and crushing little by little.
Since the pitch and size of the teeth 54 are the same, the pitch and energy of the impact of the hammer 62 on the shell of the egg E are also substantially constant.

By going through such a movement process, the shell of the egg E is cracked in a ring shape. If the user rotates the handle 24 once in the clockwise direction, the hammer 62 also makes one rotation around the egg E. Therefore, normally, in order to open the shell of the egg E, only one rotation of the handle 24 is required. Is enough.

The magnitude of the striking force of the egg E of the shell cracker 1 against the shell depends on the elastic force of the leaf spring 61 and does not depend on how the user handles or turns the handle 24. Therefore, according to the egg shell cracker 1, a constant striking force is always applied to the shell of the egg E, so that even if the user turns the handle 24 at high speed, the shell does not scatter and is crushed. Shell debris does not mix into the edible portion of egg E.

Next, the operation of accommodating the hammer 62 will be described.
At the time when the work of breaking the shell of the egg E is completed, the pin 25 is in contact with the bent portion 63 of the leaf spring 61, or at least the bent portion 63, as shown in FIGS. 4A to 4C, for example. It is located near.

When the user operates the handle 24 and turns the lid portion 23 in a counterclockwise direction, the pin 25 moves from the bent portion 63 toward the one end portion 64, collides with the bent portion 67, and is guided to the bent portion 67. Then, it comes into contact with one end 64 of the leaf spring 61 or its vicinity. As a result, the arrangement of the leaf spring 61 in the groove 51 changes, and the arrangement of the hammer 62 connected to the leaf spring 61 also changes. Specifically, since the bent portion 63 and the other end portion 65 move outward in the radial direction of the ring, the hammer 62 connected to the piece 66 between the bent portion 63 and the other end portion 65 also has a hammer 62. Move in the same direction.
Further, when the user operates the handle 24 and tries to turn the lid portion 23 in the counterclockwise direction, the one end portion 64 collides with the outer wall 53 as shown in FIG. 4 (D). As a result, the pin 25, the lid 23, and the handle 24 do not move any further counterclockwise.

As a result of these series of operations, as shown in FIG. 4D, the hammer 62 is located radially outside as compared with the case where the operation of crushing the shell of the egg E is performed. In other words, as a result of moving to the shelter position, the hammer 62 is housed in the accommodating portion inside the shell split portion 50.

By making the hammer 62 storable in this way, it is possible to prevent or delay the deterioration of the hammer 62 due to exposure to the outside air.

As described with reference to FIGS. 4A to 4D, when the user tries to move the leaf spring 61 in the clockwise direction, the other end portion 65 of the leaf spring 61 tilts the teeth 54. Since it is easy to get over the surface 56, it is easy to move in that direction. On the other hand, when the user tries to move the leaf spring 61 in the counterclockwise direction, the other end portion 65 of the leaf spring 61 collides with the inclined surface 55 of the tooth 54 and cannot overcome the inclined surface 55. Therefore, the leaf spring 61 is difficult to move in the counterclockwise direction. Therefore, the leaf spring 61 functions as a kind of ratchet mechanism.

The above description was made with the case where the user cleans up the egg shell cracker 1 in mind, but the hammer 62 may be stored as a preparation before breaking the shell of the egg E. ..

In order to crack the shell of the egg E using the egg shell cracker 1, the shell cracker 50 needs to be in close contact with or close to the shell of the egg E. When the user tries to start crushing the shell of the egg E when the hammer 62 is not stored, the hammer 62 exposed from the shell split portion 50 interferes and the shell split portion 50 becomes the shell of the egg E. There is a risk that the shell will not crack because it does not adhere sufficiently and cannot give sufficient striking force to the shell. If the above-mentioned operation of accommodating the hammer 62 is performed before starting the crushing of the shell, the crushing operation can be started with the shell split portion 50 sufficiently in close contact with the shell of the egg E, and a sufficient striking force can be obtained. You can break the shell of egg E with.

(Embodiment 2)
The shell cracker 1 according to the above embodiment is a small and simple device, but it is necessary for the user to support the egg E by the main body 21. However, the embodiment of the present invention is not limited to this, and it is naturally possible for the shell cracker to hold and support the egg E. Hereinafter, the second embodiment of the egg shell cracker having such a function will be described focusing on the differences from the first embodiment.

As shown in FIG. 5A, the egg shell cracker 2 according to the second embodiment has a main body portion 221 which is longer in the vertical direction than the egg shell cracker 1. The main body portion 221 has a size that covers the lower part of the egg with the egg E set in the hole. As a result, the user can fix the main body portion 221 by grasping it with one hand at the time of use, and can operate the handle 224 with the other hand.

Three substantially elliptical windows are provided on the side surface of the main body portion 221 so that the egg E can be visually recognized in a state of being set in the hole.

Further, the handle 224 of the egg shell cracker 2 is provided at the tip of an arm 226 formed to extend radially outward from the lid portion 223.
The arm 226 extends horizontally from the outer periphery of the lid portion 223 in the vicinity of the shell split portion 250, but is inclined upward in the vertical direction while extending outward in the radial direction, and is formed into a shape that extends horizontally again by reaching the handle 224. Has been done. As a result, the handle 224 is higher in the vertical direction than the main body 221. Therefore, the hand that operates the handle 224 and the hand that fixes the main body 221 are less likely to interfere with each other, making it easy to use.

As shown in FIG. 5B, the shell splitting portion 250 of the egg shell splitting device 2 includes a groove portion 251, a bottom portion 72 constituting the lower surface of the groove portion 251 and a ceiling 73 forming the upper surface of the groove portion 251 and a bottom portion. A plurality of teeth 254 arranged on the 72 in an annular shape around the central axis CA of the cylinder of the main body 221 and protruding vertically upward, a leaf spring 261 arranged between the teeth 254 and the ceiling 73, and a plate. It includes a hammer 262 that is integrally formed with the spring 261 and projects downward in the vertical direction.

As shown in FIGS. 5 (B) and 6 (A), the pin 225 is formed in the shape of a cylinder protruding radially inward from the inner wall of the groove portion 251.

Next, the operation of the shell cracker 250 of the egg shell cracker 2 when the user operates the handle 224 to crack the shell of the egg E will be described.

FIG. 6B is a diagram showing a state in which the other end portion 265 of the leaf spring 261 is in the most upwardly protruding portion, that is, the convex portion of the teeth 254. At this time, the leaf spring 261 is in a state of being compressed in the vertical direction, and elastic energy is stored in the leaf spring 261.

When the user rotates the handle 224 clockwise as it is, as shown in FIG. 6C, the other end 265 of the leaf spring 261 is inserted into the most retracted portion of the teeth 254 in the vertical direction, and the plate is inserted. The spring 261 is released from the compressed state. Since the user keeps turning the handle 224, the transition from the state of the leaf spring 261 drawn in FIG. 6 (B) to the state of the leaf spring 261 drawn in (C) is completed in a short time. That is, the elastic energy stored in the leaf spring 261 due to compression is released at once. Along with this, the hammer 262 connected to the leaf spring 261 protrudes downward in the vertical direction.

At the protruding position of the hammer 262, there is an egg E shell (not shown). When the hammer 262 pops out, the tip of the hammer 262 hits the shell of the egg E and crushes the shell of the egg E.

Further, when the user rotates the handle 224 clockwise, as shown in FIG. 6D, the other end 265 of the leaf spring 261 comes into contact with the inclined surface 256 of the teeth 254, and the one end portion 264 of the leaf spring 261 is in contact with the inclined surface 256. Is in contact with the ceiling 73, so that the leaf spring 261 is compressed in the vertical direction again and begins to store elastic energy.

As long as the user keeps rotating the handle 224 clockwise, the leaf spring 261 repeats the change of the state shown in FIGS. 6 (B) to 6 (D). Therefore, as the user rotates the handle 224 in the clockwise direction, the hammer 262 connected to the leaf spring 261 repeatedly pops out and retracts in the vertical direction while moving in the circumferential direction, and continuously jumps out and retracts into the shell of the egg E. Repeatedly giving a blow and crushing it little by little.

In the egg shell splitter 2, when the user rotates the handle 224 in a clockwise direction, the hammer 262 continuously hits the shell in the vertical direction while moving in an annular shape around the egg E.

By doing so, the moving direction of the hammer 262 becomes a vertical direction, and there is also the action of gravity on the egg shell splitting device 2, so that the shell splitting portion 250 has a shell splitting portion 250 as compared with the case where the moving direction of the hammer 262 is the radial direction. It easily adheres to the shell of the egg E, and the impact of the hammer 262 is surely given to the shell of the egg E.

Similarly to the egg shell cracker 1, in the egg shell cracker 2, when the handle 224 is rotated in the counterclockwise direction, as shown in FIG. 6 (E), the pin 225 has a bent portion. It moves from 263 toward one end 264 and pushes the leaf spring 261 in a counterclockwise direction. As a result, the arrangement of the leaf spring 261 in the groove 251 changes, and the arrangement of the hammer 262 connected to the leaf spring 261 also changes. Specifically, since the bent portion 263 and the other end portion 265 move upward in the vertical direction, the hammer 262 connected between the bent portion 263 and the other end portion 265 also moves in the same direction.
Further, when the user operates the handle 224 to try to turn it in the counterclockwise direction, the bent portion 263 collides with the ceiling 73 as shown in FIG. 6 (E). As a result, the pin 225, the lid portion 223, and the handle 224 are no longer moved counterclockwise, and the hammer 262 is housed.

(Embodiment 3)
In the egg shell crackers 1 and 2 according to the above-described first and second embodiments, the impact by the hammers 62 and 262 is horizontal or vertical.
The egg shell cracker 3 according to the third embodiment includes a hammer 362 formed so as to strike perpendicularly to the surface formed by the shell of the egg E. Hereinafter, the differences from the first and second embodiments will be mainly described.

The egg shell cracker 3 has the appearance shown in FIG. 7 (A).
The egg shell cracker 3 has a main body portion 321 formed in a cylindrical shape and a lid portion 323 having a truncated cone shape rotatably formed with respect to the main body portion 321 on the upper portion of the main body portion 321. Be prepared.
The inner surface of the hole provided at the lower end of the main body 321 is in contact with the egg E. The inner surface of the hole is roughened so that the egg E does not slip easily. In the present embodiment, a plurality of minute irregularities are provided on the inner surface of the holes provided at the lower ends of the main body portion 321 by laser processing.
Further, the egg shell cracker 3 includes a gearbox 327 in which a plurality of gears (not shown) are stored directly above the lid portion 323. The gearbox 327 is formed in a cylindrical shape, and a handle 324 is formed so as to extend radially outward from the side surface thereof. The handle 324 is rotatably formed via an arm 326 about an axis perpendicular to the central axis CA. The rotational movement of the handle 324 is converted into the rotational movement of the lid portion 323 about the central axis CA by the plurality of gears described above in the gearbox 327.
The shell cracking portion 350 of the egg shell cracker 3 is formed so as to surround the upper portion of the egg E in a state where the upper portion of the egg E is housed in the main body portion 321 and swells outward in the radial direction for accommodating the leaf spring 361 and the like. The spring accommodating portion 350a formed of the above is provided.

As shown in the FF arrow view of (A) shown in FIG. 7 (B), the shell split portion 350 is formed with a groove portion 351 as in the first embodiment. Further, a leaf spring 361 is arranged inside the spring accommodating portion 350a. The leaf spring 361 is locked by a pin 325.
Unlike the grooves 51 and 251 in the first and second embodiments, the groove 351 is provided so as to be inclined in both the vertical direction and the horizontal direction, and correspondingly, the groove portion 351 is provided inside the groove portion 351. The pin 325 and the leaf spring 361 are also inclined.
Further, the tooth 354 is also composed of a steep inclined surface 355 and a gently inclined surface 356, as in the first and second embodiments. However, since the groove portion 351 is formed so as to be inclined in both the vertical direction and the horizontal direction, the inclined surfaces 355 and 356 are also the inclined surfaces 55, 56, 255 and 256 in the first and second embodiments. It is tilted in different directions. Specifically, the inclined surfaces 355 and 356 are formed so that the hammer 362 integrally formed with the hairpin-shaped leaf spring 361 faces the normal direction of the surface formed by the shell of the egg E.
With such a configuration, when the user rotates the handle 324 clockwise, the pin 325 moves the leaf spring 361 in the clockwise direction. As the leaf spring 361 rotates, the hammer 362 connected to the leaf spring 361 repeatedly pops out and retracts in the normal direction of the surface formed by the shell of the egg E while moving in the circumferential direction, and is continuous with the shell of the egg E. Repeatedly crushing the eggplant by hitting it.

(Embodiment 4)
The egg cracker 4 according to the fourth embodiment has the appearance shown in FIG. 8 (A).
The egg shell cracker 4 has a cylindrical main body portion 421 and an annular lid portion 423 that is continuously provided on the upper side of the main body portion 421 and rotates with the rotation of the handle 424 fixed to the main body portion 421. Have.
Hereinafter, the differences from the first to third embodiments will be mainly described.

As can be understood from the GG arrow view of (A) shown in FIG. 8 (B), the inside of the main body portion 421 includes a rotational force supply unit 86 that mediates the rotational force by the handle 424 and a rotational force. A rotational force receiving unit 87 that receives the rotational force supplied from the supply unit is provided. The rotational force supply unit 86 and the rotational force receiving unit 87 are arranged concentrically.
The lid portion 423 is connected to the rotational force supply portion 86 having a substantially cylindrical shape inside the main body portion 421, and the rotational force supply portion 86 is arranged radially inside the rotational force receiving portion 87. The rotational force supply unit 86 includes four plate-shaped claws 86a formed so as to extend in the circumferential direction on the outer peripheral surface thereof. Further, a rotational force receiving portion 87 having a plurality of ratchet teeth 87a engaged with the claw 86a is arranged inside the main body portion 421 and radially outside the rotational force supply portion 86.
The rotational force supply unit 86 and the rotational force receiving unit 87 form a ratchet mechanism by means of a claw 86a and a ratchet tooth 87a.
That is, when the rotational force supply unit 86 rotates counterclockwise, the claw 86a deforms inward in the radial direction and easily gets over the teeth of the rotational force receiving unit 87. Therefore, the rotation of the rotational force supply unit 86 is a rotational force. It is difficult to transmit to the receiving part 87. On the other hand, when the rotational force supply unit 86 tries to rotate clockwise, the tip of the claw 86a bites into the ratchet teeth 87a, so that the rotation of the rotational force supply unit 86 is easily transmitted to the rotational force receiving unit 87.
This ratchet mechanism corresponds to the one-way driving force transmission unit in the claims.

Further, the inner lid 485 is arranged below the main body portion 421, and is formed in a substantially cylindrical shape in which the upper end and the lower end thereof are narrowed. Since the inner lid 485 is connected to the rotational force receiving portion 87 inside the main body portion 421, the inner lid 485 can rotate in the same direction as the rotational force receiving portion 87.

Next, the operation of the egg shell cracker 4 will be described. When the user rotates the handle 424 clockwise, the rotational force generated by the rotation of the handle 424 is generated by the leaf spring 461 and the hammer as described later via the inner lid 485 connected to the rotational force receiving unit 87. It is transmitted up to 462.

As shown in FIG. 8C, the hammer 462 is formed integrally with the hairpin-shaped leaf spring 461 and is arranged so as to face the normal direction of the surface formed by the shell of the egg E.
However, in the egg shell splitting device 4, not only the leaf spring 461 and the hammer 462 but also the plate-shaped engaging projection 88 is integrally formed. Since the engaging protrusion 88 is fixed in a state of being inserted into the hole of the inner lid 485, the leaf spring 461 and the hammer 462 also move as the inner lid 485 rotates.
The egg crackers 4 are different from the egg crackers 1 to 3 and do not have pins 25,225,325. However, since the leaf spring 461 is fixed to the inner lid 485 via the engaging protrusion 88, when the inner lid 485 rotates clockwise, the other end portion 465 comes into contact with the gently inclined surface 456 and the teeth 454. And falls between the steep slope 455 and the gentle slope 456. At this time, the hammer 462 of the egg shell cracker 4 gives a blow to the shell of the egg E as in the case of the egg shell crackers 1 to 3.
Further, since the egg shell splitting device 4 has the structure described above, the user can rotate the handle 424 clockwise by an angle of less than 360 °, and then rotate it counterclockwise by that angle. Even if it is repeated, the shell of the egg E can be hit over one round. For example, if the operation of rotating the handle 424 clockwise by 90 ° and the operation of rotating the handle 424 counterclockwise by that angle are set as one set, and this is repeated four sets, the hammer 462 hits the circumference of the shell of the egg E. While rotating over 360 °.
As in the case of the egg shell crackers 1 to 3, the user may crack the egg E shell only by rotating the handle 424 clockwise.

When the handle 424 is rotated counterclockwise, the action of breaking the shell of the egg E is not performed. However, the leaf spring 461 in which the counterclockwise rotational force is inserted into the inner lid 485 and the inner lid 485 is transmitted with a sufficiently smaller counterclockwise rotational force than when rotated clockwise. As a result, even in the egg shell cracker 4, the hammer 462 moves outward in the radial direction in the same manner as in the egg shell crackers 1 to 3, so that the hammer 462 can be stored.

The lower end of the main body 421 may be formed by using, for example, an elastomer material. With such a configuration of the main body portion 421, the egg shell cracker 4 easily adheres to the shell of the egg E and is not slippery while the user holds the main body portion 421 by hand.

(Embodiment 5)
The egg shell cracker 5 according to the fifth embodiment is different from the egg shell crackers 1 to 4, and is an instrument capable of cracking the shell of the egg E without rotating the handles 24,224,324,424. be.
Hereinafter, the parts different from the egg shell crackers 1 to 4 will be mainly described.

The egg shell cracker 5 has the appearance shown in FIG. 9 (A).
A push button switch SW is arranged on the side surface of the main body portion 521 of the egg shell cracker 5. The push button switch SW is a switch that starts the operation of breaking the shell of the egg E, and turns on / off the electrical connection.
Further, a battery box (not shown) is provided inside the main body 521, and the battery P is set. Positive and negative wiring extends from the terminal fittings of the battery box and is electrically connected to a control board having an electric circuit for controlling the rotation of the leaf spring 561 and the hammer 562 (not shown). Further, plus and minus wirings extend from this control board and are electrically connected to the motor M arranged inside the shell split portion 550 (not shown).

Below the inside of the main body 521 of the egg shell splitting device 5, as shown in FIG. 9B, there are a pinion gear 81, a sun gear 82 that meshes with the pinion gear 81, and three planets that mesh with the sun gear 82. The gear 83 and the gear 83 are arranged. That is, these gears 81, 82, 83 are arranged so that the rotational movement of the electric motor M is transmitted to the rotational movement of the inner lid 585 provided with the internal gear 84 that meshes with the planetary gear 83.

The inner lid 585 includes a cylinder provided with an internal gear 84 and a flange-shaped countersunk portion formed on the lower surface of the cylinder so as to extend radially outward. The outer edge of the dish is provided with a hole for inserting and fixing one end of the leaf spring 561.

Next, the electric circuit of the control board provided in the egg shell cracker 5 will be described with reference to the circuit example of FIG. 9C. This electric circuit includes a DC power supply P, an electrolytic capacitor C that stores a predetermined amount of electric energy supplied from the DC power supply P, a push button switch SW that connects and disconnects the DC power supply P to the circuit, and a pinion gear 81. It is provided with an electric motor M for rotating the electric motor M, a transistor Tr for controlling the supply of a current to the electric motor M, and electric resistances R1, R2, and R3 having resistance values for controlling the operating conditions of the transistor Tr, the electric motor M, and the like.
The push button switch SW corresponds to the hit start instruction detection unit in the claim, and the electrolytic capacitor C corresponds to the kinetic energy storage unit in the claim.

Next, the operation of the egg shell cracker 5 will be described. In the egg shell splitting device 5, the shell splitting of the egg E is performed only by pressing the push button switch SW.
When the push button switch SW is pressed, the battery P, which is a DC power source, is connected to the circuit, and the electrolytic capacitor C is charged in a short time. As a result, the base voltage of the transistor Tr rises, a current starts to flow to the motor M, and the operation of breaking the shell of the egg E is started. Even if the push button switch SW is turned off and the battery P is disconnected from the circuit, the electric charge is stored in the electrolytic capacitor C, so that the resistance between the emitter and collector of the transistor Tr remains low, and the electrolytic capacitor C remains low. The electric energy stored in the capacitor is released and supplied to the electric motor M. As a result, the motor M continues to rotate until the amount of electric energy stored in the electrolytic capacitor C falls below a certain value, the leaf spring 561 continues to move, and the hammer 562 continues to hit. When the hammer 562 makes about one round around the egg E, the amount of electric energy stored in the electrolytic capacitor C is less than the amount of energy required to move the leaf spring 561 and the like, and the rotation of the electric motor M is increased. Since it stops, the operation of breaking the shell of egg E also stops automatically.
The parameters of each element of this electric circuit are determined by simulation or trial.
Further, pressing the push button switch SW corresponds to the hitting instruction in the claim.
As the transistor Tr, a digital transistor including electric resistances R2 and R3 may be used.

As described above, in the egg shell splitters 1 to 4, the elastic energy of the leaf springs 61,261,361,461, which is the source of the impact of the hammers 62,262,362,462, is obtained from the operation of the handle 24 by the user. On the other hand, in the egg shell splitter 5, the elastic energy of the leaf spring 561, which is the source of the impact of the hammer 562, is derived from the electric energy of the battery P.
Therefore, according to the egg shell cracker 5, unlike the egg shell cracker 2, it is not necessary to turn the handle 24, so that the shell of the egg E can be cracked more easily.

(Embodiment 6)
In the above steps 1 to 5, the elastic energy for driving the hammers 62,262,362,462 was generated by the hairpin-shaped leaf springs 61,261, but if the hammers 62,262 can be driven, the elastic energy is generated. The member is not limited to the leaf spring 61 and the like. Hereinafter, an embodiment in which the coil spring 94 is used as the drive source of the hammer 62 instead of the leaf spring 61 will be described.

The egg shell cracker 6 according to the sixth embodiment operates the hammer 62 in a manner different from that of the egg shell cracker 1. Hereinafter, the portion different from the egg shell cracker 1 will be mainly described.

As shown in FIG. 10, the shell splitting portion 650 of the egg shell splitting device 6 has a coil spring 94, a shaft 95, a slider 96, a pawl 97, and a shaft guide portion 98, which are elastic members. The other configurations are the same as those in the first embodiment.

The coil spring 94, the shaft 95, the slider 96, the pawl 97, the shaft guide portion 98, and the like are arranged in the groove portion 51.
The shaft of the coil spring 94 is arranged so as to be parallel to the bottom surface of the groove 51 and also parallel to the radial direction of the ring. A shaft 95 is passed through the coil spring 94 as an inner diameter side guide. The radial outer end of the ring of the shaft 95 is connected to the slider 96. The slider 96 is formed in a boat shape, has a curved side surface having substantially the same curvature as the outer wall 53, and is slidable in the circumferential direction together with the coil spring 94, the shaft 95, and the hammer 62.

Inside the groove 51 in the radial direction, the coil spring 94 is connected to the pawl 97. The pawl 97 is formed in a shape capable of being in close contact with the inclined surfaces 55 and 56 of the tooth 54. The pawl 97 is urged inward in the radial direction by the urging force of the coil spring 94. Further, the hammer 62 is connected so as to interlock with the pawl 97.

The shaft guide portion 98 is formed as an arc-shaped groove in the slider 96, and this groove has a sufficient width and depth to guide the pin 25. When the user rotates the handle 24 in the first direction clockwise, the pin 25 contacts one end of the arcuate groove of the axial guide 98, and the user turns the handle 24 in the second direction counterclockwise. When rotated in the clockwise direction, the pin 25 comes into contact with the other end of the arcuate groove of the shaft guide portion 98.

Since the inclined surfaces 55 and 56 are formed in the same shape as that in the egg shell cracker 1, the hammer 62 of the egg shell cracker 6 also tends to rotate in the clockwise direction and is counterclockwise. It is difficult to rotate in the direction.

By using the coil spring 94, which is less likely to deteriorate than the leaf spring 61, it is possible to prevent a change in the striking force of the hammer 62 and provide an egg shell cracker 6 having high durability.

(Modification 1)
The shell split portion 50 and the like may be made of a material containing a transparent resin. In the egg shell cracker 7 using a transparent resin, the inside of the utensil is easier to see than when an opaque resin is used.
Therefore, since it is possible to easily check the degree of dirt inside the utensil before, during, and after use, it is possible to provide an egg shell cracker 7 in which it is easy to grasp the timing to be cleaned.

(Modification 2)
In the above embodiment, for example, the first embodiment, the shell splitting portion 50 includes only one hammer 62, but the shell splitting portion 50 may include a plurality of hammers 62. In the egg shell splitting device 8 according to such a modification, a hammer 62 is connected to each of the plurality of leaf springs 61.
By doing so, the user can open the shell of the egg E without rotating the handle 24 once.
In the egg shell splitter 8 in which N hammers 62 are arranged in an annular shape at equal intervals, the user can open the shell of the egg E by rotating the handle 24 by at least (360 ° / N).

In addition, when the embodiment 5 using electric energy is used as a base, the time for operating the electric motor M to open the shell of the egg E can be shortened as compared with the case where only one hammer 62 is provided. ..

(Modification 3)
The egg shell cracker 5 according to the fifth embodiment includes only one push button switch SW. On the other hand, the egg shell cracker 9 according to this modification includes two push button switches SW1 and SW2. For example, the push button switch SW1 in the egg shell splitting device 9 is an operation switch for breaking the shell of the egg E, and the push button switch SW2 is an operation switch for accommodating the hammer 562.
Hereinafter, the points different from the egg shell cracker 5 will be mainly described.

A battery box is provided at an arbitrary position of the egg shell cracker 9, and the battery P is set. From the battery box, positive and negative wiring extends to the shell split portion 50, and is electrically connected to the motor M via the push button switches SW1 and SW2.
The push button switches SW1 and SW2 of the egg shell cracker 9 according to this modification are switches that are turned off in the normal state and turned on in the pressed state.
An example of the electric circuit of the egg shell cracker 9 is shown in FIG. 11 (A). Push button switches SW1 and SW2 are inserted in series between the motor M and the battery P. The battery P, the push button switches SW1 and SW2 and so that the directions of the voltages applied to the motor M are opposite to each other when the push button switch SW1 is pressed and when the push button switch SW2 is pressed. The motor M is connected. In FIG. 11A, circuit elements such as electrolytic capacitors, electric resistances, transistors, short-circuit prevention elements, and overcurrent prevention elements are omitted for ease of understanding.

Next, the relationship between the electric motor and the gears included in the egg shell cracker 9 will be described with reference to FIG. 11 (B).
As shown in FIG. 11B, the egg shell splitter 9 meshes with the electric motor M, the pinion gear 181 attached to the rotation shaft of the electric motor M, and the pinion gear 181. It is provided with an intermediate gear 182 for adjusting the speed and an internal gear 183 which meshes with the intermediate gear 182 and is provided on the inner wall of the lid portion 23 to rotate the lid portion 23. In FIG. 11B, a part of the internal gear 183, wiring of the motor M, and the like are omitted in order to promote understanding.

Next, the operation of the egg shell cracker 9 will be described.
In the egg shell splitter 9, when the user presses the push button switch SW1 or SW2, the electric motor M and the battery P are electrically connected, and the rotation shaft of the electric motor M rotates only during that time. Then, the rotational motion of the rotary shaft is converted into the striking motion of the hammer 62 via the mechanism including the above-mentioned gears.

The egg shell splitting device 9 includes not only the push button switch SW1 but also the push button switch SW2, so that the operation of storing the hammer 62 in the egg shell splitting device 1 according to the first embodiment uses electrical energy. Can be done.

Although various embodiments and modifications have been described above, the embodiments and modifications of the present invention are not limited thereto.
For example, the structure of the support portion that supports the egg E to be broken and the target of the support are not limited to the structure of the main body portions 21,221,321, and are arbitrary, and the egg E is placed and held. Any holding mechanism such as holding the egg E by sandwiching it can be adopted.

Further, in the egg shell splitting device 1 and the like, the shape of the tip of the hammer 62, which is a striking part that hits the shell of the egg E, is a curved flat plate, but the shape of the tip is a cone shape, a truncated cone shape, or the like. It is also possible to change the shape as appropriate, such as a pyramid shape or a prismatic shape.

As an example of the elastic member, a hairpin-shaped leaf spring 61,261,361,461,561 and a coil spring 94 have been exemplified, but the shape of the spring is arbitrary. Further, the material of the spring is not limited to metal and may be arbitrary. Further, it is also possible to use an elastic member other than a spring such as rubber.

As an example of the guide portion for guiding the striking portion and the elastic member, the groove portion 51 has been exemplified, but the guide portion is not limited to the groove, and may be a rail or the like. In addition, although an example of arranging a route and a guide groove so as to surround the egg E is shown, it is also possible to set an arbitrary route such as a route of only half of the egg E or a route along the outer shape of the egg E in the major axis direction. It is possible.

Further, as an example of a plurality of uneven portions arranged in the guide portion, teeth 54,254,354 of the same size arranged at a constant pitch are shown, but the size and pitch of these teeth 54, 254, 354 are constant. It doesn't matter if it changes instead. For example, a certain section may be hit densely / strongly, and other sections may be hit roughly / weakly. In this case, the arrangement density and size of the teeth 54, 254, 354 may be adjusted according to the required specifications.
Further, as an example of the drive unit, the lid portion 23,223,323,423 with the handles 24,224,324,424 and the electric motor M are exemplified, but a power source such as a royal fern may be used.

The present invention allows for various embodiments and modifications without departing from the broad spirit and scope of the invention. Further, the above-described embodiments are for explaining the present invention, and do not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiment but by the scope of claims. Then, various modifications made within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

1,2,3,4,5,6,7,8,9 Egg shell splitter, 21,221,321,421,521 body, 22 handles, 23,223,323,423 lids, 24, 224,324,424 Handles, 25,225,325 pins, 226,326,426 arms, 327 gearboxes, 50,250,350,450,550,650 shell splits, 350a spring housing 51,251,351 Groove, 52 inner wall, 53 outer wall, 54,254,354,454 teeth, 55,56,255,256,355,356,455,456 inclined surface, 61,261,361,461,561 leaf spring, 62,262 , 362,462,562 Hammer, 63,263 Bend, 64,264 One end, 65,265,465 Other end, 66 pieces, 67 Bend, 72 Bottom, 73 Ceiling, 81,181 Pinion gear, 82 Sun Gears, 83 planetary gears, 84,183 internal gears, 485,585 inner lids, 86 rotational force supply parts, 86a claws, 87 rotational force receiving parts, 87a ratchet teeth, 88 engaging protrusions, 182 intermediate gears, 94 coil springs. , 95 shaft, 96 slider, 97 pawl, 98 axis guide, CA center axis, E egg, M electric motor, SW, SW1, SW2 push button switch, P battery, RP reference plane.

Claims (11)

The support part (21) that supports the egg and
The hitting part (62) for hitting the egg shell,
An elastic member (61) fixed to the hitting portion (62) and
The hitting portion (62) and the elastic member (61) are guided by a predetermined path along the egg arranged in the support portion (21) and supported by the support portion (21), and along the path. A guide portion (51) having a plurality of uneven portions (54),
While the elastic member (61) is in contact with the uneven portion (54), the striking portion (62) and the elastic member (61) are moved by the path according to the guidance by the guide portion (51). A drive that causes the hitting portion (62) to hit the egg supported by the supporting portion (21) a plurality of times due to the elastic deformation of the elastic member (61) due to contact with the plurality of uneven portions (54). Department and
To prepare
Egg shell cracker. The guide portion (51) is formed in a ring shape surrounding the egg supported by the support portion (21).
The striking portion (62) is driven by the driving portion to strike while moving in an annular shape.
The egg shell cracker according to claim 1. The convex portion of the uneven portion (54) includes a first surface (55) and a second surface (56) that intersect the tangent of the path at different angles.
The recess of the uneven portion (54) is composed of a region between the first surface (55) and the second surface (56).
The egg shell cracker according to claim 1 or 2. The guide portion (51) includes an annular groove portion (51) formed in the support portion (21).
A plurality of uneven portions (54) having a constant size are formed along the inner wall (52) of the groove portion (51) at a constant pitch.
The elastic member (61) is arranged between the outer wall (53) of the groove portion (51) and the uneven portion (54) of the inner wall (52), and the inside of the groove portion (51) is driven by the drive of the drive portion. It moves, and as it moves, it comes into contact with the uneven portion (54) and elastically deforms.
The striking portion (62) advances or retracts with respect to the egg as the elastic member (61) is deformed, and strikes when advancing.
The egg shell cracker according to any one of claims 1 to 3. The support portion (21) is formed in a cylindrical shape having a hole for accommodating an egg.
The guide portion (51) is formed in a flange portion arranged at the end of the cylindrical support portion (21), and has a groove portion (51) formed concentrically with the hole and the groove portion (51). With a plurality of uneven portions (54) formed along the inner wall (52) of the
The elastic member (61) is arranged in the groove portion (51), one end portion (64) presses the outer wall (53) of the groove portion (51), and the other end portion (65) presses the uneven portion (54). Consists of a hairpin-shaped leaf spring (61),
The striking portion (62) is fixed to the other end portion (65) of the leaf spring (61).
The drive unit includes an engaging pin (25) that engages with the base of the leaf spring (61), and the engaging pin (25) is moved along the groove portion (51).
The egg shell cracker according to any one of claims 1 to 4. The portion of the striking portion (62) that strikes the egg shell has a curved shape and is composed of a plate parallel to the guiding direction of the guiding portion (51).
The egg shell cracker according to any one of claims 1 to 5. The elastic member (61) is
When a force is received from the drive unit in the first direction along the path,
It moves by the received force, and in the process of movement, the elastic member (61) is elastically deformed by coming into contact with the plurality of uneven portions (54), and the support portion is elastically deformed with the elastic deformation of the elastic member (61). Hit the egg supported by (21) multiple times and hit it.
When a force is received from the drive unit in a second direction along the path,
It is elastically deformed by the received force to retreat the hitting portion (62) to a predetermined retreat position away from the egg.
The egg shell cracker according to any one of claims 1 to 6. The driving unit includes a handle (24) or an electric motor that generates a driving force for moving the elastic member (61) and the striking unit (62).
The egg shell cracker according to any one of claims 1 to 7. At least a part of the surface of the support portion (21) is roughened.
The egg shell cracker according to any one of claims 1 to 8. Further comprising a one-way driving force transmitting unit that transmits only the driving force in one direction along the path to the driving unit.
The egg shell cracker according to claim 8. A batter start instruction detection unit that detects a batter instruction to start a batter and gives a batter instruction to instruct the batter unit (62) to start a batter.
Further equipped with a kinetic energy storage unit that stores energy for moving the drive unit,
When the hitting instruction is not detected or is detected, the kinetic energy storage unit stores energy until it reaches a predetermined amount.
When the hitting instruction is detected by the hitting start instruction detecting unit, the energy stored in the moving energy storage unit is supplied to the driving unit.
The moving energy storage unit is such that when the striking unit (62) moves along the path and goes around the path, the predetermined amount is less than the amount of energy required to move the driving unit. Capacity is set,
The egg shell cracker according to any one of claims 1 to 10.

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