Electric cooker

Abstract

The electric cooker (100) is provided with a clamp shaft (46) which is inserted into holes (53, 54) formed on cover reinforcing plates (51, 52) so as to be supported to be capable of rotating; and a resin shaft suppression part (57) which is provided on at least one end side of the jig shaft (46) and which prevents the jig shaft (46) from disengaging from the cover reinforcing plates (51, 52), the shaft suppression part (57) being provided with a space (58) through which the jig shaft (46) is inserted, and the space (58) being configured so that the jig shaft (46) is inserted into the space (58). The jig has a first state in which the distance (W1) between the ribs (57-1, 57-2) on the jig (45) side is smaller than the diameter (D) of the jig shaft (46), and a second state in which the distance (W1) of the space (58) becomes equal to or greater than the diameter (D) of the jig shaft (46) by receiving an external force generated by pressing the jig shaft (46) by the shaft suppression part (57).

Description

Technical Field

[0001] The utility model relates to an electric rice cooker provided with a shaft for axially supporting a rotating body. Background Art

[0002] In the past, for example, there is a known rice cooker that has a shaft used in a clamp that rotates around a shaft rod, a hinge that rotates around a hinge shaft when the cover is opened and closed, and the like. For example, the patent applicant of the present application proposed the following rice cooker, which has a clamp 44 provided on the cover 31 to clamp the main body 1 and the cover 31, and a cover reinforcement plate 411, 412 arranged on the cover 31, the clamp 44 rotates around a clamp shaft 45, and the cover reinforcement plates 411, 412 are divided in the cover 31 and connected to the clamp shaft 45 (for example, Patent Document 1). Holes 414, 414 for the clamp shaft 45 to pass through are provided on the front side of the cover reinforcement plates 411, 412, and the clamp shaft 45 is connected to the cover reinforcement plates 411, 412 by passing the respective ends of the clamp shaft 45 through these holes 414, 414.

[0003] Here, although there is no record in Patent Document 1, Figure 7 As shown in (A), a fixing rib L having a flat surface portion L1 is provided on the inner side of the outer cover 132 as the outer cover 32 of Patent Document 1. Figure 7 As shown in (B), the fixing rib L is configured so that the flat surface portion L1 is disposed opposite to the hole 414 when the outer cover 135 is mounted on the outer cover 132, thereby preventing the clamp shaft 145 as the clamp shaft 45 of Patent Document 1 from being disengaged from the hole 414.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2012-157757

[0007] In the case of the rice cooker in which the rib L is provided on the appearance part, a shrinkage mark which is a slightly concave phenomenon is sometimes generated on the outer surface of the outer cover 132 provided with the fixing rib L, and the color tone is different from other places. Since the outer cover 132 is an appearance part, the appearance of the product is sometimes affected. Therefore, it is desirable to provide an anti-detachment mechanism for preventing the clamp shaft 145 from detaching from the hole 414 of the cover reinforcement plate 412 as a bearing part outside the appearance part. However, if the fixing rib L exists at the place where the fixing rib L is arranged before the clamp shaft 145 is inserted into the hole 414, there is a problem that the flat surface portion L1 interferes and the clamp shaft 145 cannot be inserted into the hole 414. Utility Model Content

[0008] In view of the above situation, an object of the present invention is to provide an electric rice cooker having an anti-slip mechanism that can attach a shaft to a bearing portion even if the anti-slip mechanism exists before the shaft is attached.

[0009] In the rice cooker of the present invention, it is characterized in that it comprises: a shaft, which is supported to be rotatable by being inserted into a hole formed in a bearing portion; and an anti-slip mechanism, which is made of a flexible material and is arranged on at least one end side of the shaft to prevent the shaft from being detached from the bearing portion, and the anti-slip mechanism has: a first state in which the shaft cannot pass; and a second state in which an insertion space is formed by an external force and the shaft can pass through.

[0010] In the rice cooker of the present invention, the two plate-like ribs of the anti-detachment mechanism may be arranged to face each other with at least one of them being inclined with respect to the insertion direction of the shaft, and the narrow side of the ribs may be arranged to be located on the shaft side.

[0011] In the electric rice cooker of the present invention, it may also be configured that the external force is applied to press the anti-detachment mechanism in the axial direction.

[0012] In the rice cooker of the present invention, the anti-detachment mechanism may be configured to be in the first state when the anti-detachment mechanism is no longer subjected to the external force from the second state.

[0013] In the rice cooker of the present invention, when the anti-detachment mechanism is not provided on the other end side of the shaft, an anti-detachment portion for preventing the shaft from detaching from the bearing portion may be provided on the other end side of the shaft.

[0014] The rice cooker of the present invention may include a main body of the rice cooker and a cover that covers an upper surface opening of the main body in an openable and closable manner, wherein the shaft is a clamp shaft provided on the cover to rotate a clamp that locks the main body and the cover.

[0015] In the electric rice cooker of the present invention, the anti-detachment mechanism and the anti-detachment portion may not be provided on the exterior component.

[0016] Utility Model Effect

[0017] According to the utility model, even if the anti-drop mechanism exists before the shaft is mounted, the shaft can be mounted on the bearing portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a perspective view showing the rice cooker according to one embodiment of the present invention.

[0019] Figure 2 It is a longitudinal sectional view of the rice cooker of the above-mentioned one embodiment.

[0020] Figure 3 It is a perspective view showing the internal structure of the cover body according to the above-mentioned embodiment.

[0021] Figure 4 The above embodiment Figure 3 An enlarged schematic of frame A.

[0022] Figure 5 It is an enlarged plan view of a main part of the shaft restraining portion according to the above-mentioned embodiment.

[0023] Figure 6 It is an explanatory diagram showing a main part of the internal structure of the cover body when the clamp according to the above-mentioned embodiment is assembled.

[0024] Figure 7 (A) is a partial enlarged view showing the main part of the outer cover of a conventional rice cooker. Figure 7 (B) is a partially enlarged view showing a main part of a jig of a conventional rice cooker.

[0025] Description of Reference Numerals

[0026] 22. Outer cover (appearance component); 46. Clamp shaft (shaft); 51. Cover reinforcement plate (bearing part); 52. Cover reinforcement plate (bearing part); 53. Hole; 54. Hole; 56. Anti-slip part (second anti-slip mechanism); 57. Shaft suppression part (anti-slip mechanism); 57-1. Rib; 57-2. Rib; 58. Space (insertion part) 100. Rice cooker; W1. Interval (width). DETAILED DESCRIPTION

[0027] Hereinafter, preferred embodiments of the heating cooker in the present invention will be described with reference to the attached drawings. In addition, in all of these drawings, common reference numerals are given to common parts.

[0028] Figure 1 to Figure 6 The electric rice cooker 100 in one embodiment of the utility model is shown. If the overall structure of the electric rice cooker 100 in this embodiment is described based on these drawings, 1 is a main body, which is roughly rectangular with the front and rear sides, the left side and the right side facing each other when viewed from above, and the upper part is open. 2 is a cover body that can be opened and closed to cover the upper surface opening of the main body 1. Like the main body 1, it is roughly rectangular with the front and rear sides, the left side and the right side facing each other when viewed from above, and the upper surface is roughly flat. The main body 1 has an outer frame 3 that becomes an appearance component, and a pot storage part 4 with an upper opening, and is configured so that when the cover body 2 is opened, a pot 5 with a bottom as a container for accommodating the food to be cooked, i.e., water and rice, can be freely loaded and unloaded in the pot storage part 4. The pot storage part 4 is configured by combining an upper frame 6 that constitutes its upper and side parts with a bowl-shaped and resin-made inner frame 7, etc., and the whole is formed into a bottomed cylindrical shape.

[0029] The pot 5 is made of aluminum with good thermal conductivity as the main material 8, and a heating element 9 made of a magnetic metal plate such as ferrite stainless steel is joined from the lower side of the outer surface of the main material 8 to the bottom. In addition, a heating coil 11 is provided as a heating mechanism for electromagnetic induction heating the heating element 9 of the pot 5 on the outer surface of the inner frame 7 facing the bottom surface from the lower side of the pot 5. And it is configured so that when a high-frequency current is supplied to the heating coil 11, the heating element 9 of the pot 5 is heated by the alternating magnetic field generated by the heating coil 11, and the food to be cooked in the pot 5 is heated when cooking and keeping warm. In addition, a pot sensor 12 as a pot temperature detection mechanism is arranged at the bottom center of the inner frame 7 so as to be in elastic contact with the bottom of the outer surface of the pot 5.

[0030] A steam port 14 is formed on the upper surface of the lid 2 to discharge steam generated from the food in the pot 5 to the outside of the rice cooker 100. In addition, a lid operating body 15 as a lid opening mechanism is disposed in an exposed state in front of the upper surface of the lid 2.

[0031] In addition to the steam port 14 and the cover operating body 15, a display operating unit 17 is provided on the upper surface of the cover 2. The display operating unit 17 mainly includes: a display mechanism 18 composed of, for example, an LCD (Liquid Crystal Display) for displaying various information related to rice cooking; an operating mechanism 19 composed of a push switch for starting rice cooking or selecting a rice cooking program; and a control PC (Printed Circuit) board 20 equipped with a control IC (not shown) for controlling the display mechanism 18, the operating mechanism 19, and various parts of the display operating unit 17. In addition, an operating panel 21 for protecting the display mechanism 18, the operating mechanism 19, and the control PC board 20 is arranged above the display operating unit 17.

[0032] The cover body 2 is composed of an outer cover 22 which is an appearance component, and an outer cover cover 23 which is formed below the outer cover 22. The outer cover cover 23 is provided with a metal heat sink 24 which is obtained by subjecting stainless steel or aluminum to an acid-resistant and corrosion-resistant treatment. An inner cover assembly 25 which is a lower component of the cover body 2 is arranged on the lower side of the cover body 2. The inner cover assembly 25 is composed of a disc-shaped metal material having a diameter substantially the same as that of the upper opening of the pot 5, and comprises: an inner cover 26 which covers the upper opening of the pot 5; and a cover seal 27 which is an elastic component and is provided on the entire outer circumference of the inner cover 26 in order to seal between the inner cover 26 and the pot 5. The cover seal 27 which is formed in an annular shape is as shown in FIG. Figure 1As shown, when the lid 2 is closed, it abuts against the flange 28 that becomes the upper surface of the pot 5 and the inner surface of the upper end of the pot 5, thereby blocking the gap between the pot 5 and the inner cover 26 and sealing the steam generated from the pot 5. The metal inner cover 26 obtained by acid-resistant corrosion treatment of stainless steel or aluminum is arranged on the outer side of the heat sink 24.

[0033] Inside the lid body 2, there are provided a lid heater 31 as a lid heating mechanism for heating the inner lid 26, a thermistor-type lid temperature sensor 32 for performing temperature management of the inner lid 26 based on the lid heater 31, and a pressure regulating unit 33 for adjusting the pressure of the space inside the pot 5. In addition, inside the lid body 2, as a passage for releasing the steam generated in the pot 5 to the outside, a steam discharge path 34 is formed that connects the steam port 14 with the pressure regulating unit 33.

[0034] The pressure regulating part 33 is provided with a pressure regulating valve 35 for opening and closing the steam discharge path 34 between the inside of the pot 5 and the steam port 14. The pressure regulating valve 35 is linked to a solenoid 36 provided inside the cover 2, and the solenoid 36 moves the pressure regulating valve 35 up and down so as to open the steam discharge path 34 when the steam in the pot 5 is released to the outside, and to block the steam discharge path 34 when the inside of the pot 5 is set to a pressurized or depressurized state. In addition, when pressurized, the food to be cooked in the pot 5 is heated by high-frequency energization of the heating coil 11, and the food to be cooked boils and generates steam. When the steam fills the pot 5 and the internal pressure of the pot 5 reaches a predetermined value, the spring 37 overcomes the elastic force of the spring 37 provided in the pressure regulating valve 35 and contracts upward, and the pressure regulating valve 35 moves upward to open the steam discharge path 34, thereby maintaining the pressure in the pot 5 above the atmospheric pressure.

[0035] Reference numeral 38 denotes a unitized heating substrate assembly disposed inside the main body 1 and including a heating control mechanism 39. The heating control mechanism 39 is configured to electrically control various parts of the rice cooker 100 in combination with the display operation unit 17, and includes a microcomputer (microcomputer) including a control IC such as a CPU, a memory capable of reading and writing various information or data, a timer capable of measuring the time associated with cooking, etc., and electrically controls various parts of the rice cooker 100. Specifically, the heating substrate assembly 38 is connected to the display operation unit 17, and the heating control mechanism 39 receives temperature sensing signals from the pot sensor 12 and the lid temperature sensor 32, outputs heating control signals to the heating coil 11 and the lid heater 31, and outputs a driving control signal to the solenoid 36 that actuates the pressure regulating valve 35.

[0036] Reference numeral 41 denotes a hinge portion, which includes a hinge shaft 42 disposed at the rear lower portion of the cover body 2, and a hinge spring 43 formed of a coil spring or the like and disposed at the upper rear portion of the main body 1. The structure is such that if the cover body operating body 14 disposed at the front upper surface of the cover body 2 is pressed, the engagement between the main body 1 and the cover body 2 is released, and the cover body 2 is opened with the hinge shaft 42 as the rotation center by the hinge spring 43.

[0037] Furthermore, a hinge cover 44 is attached to the rear of the hinge portion 41, and the hinge cover 44 is configured to be flush with the outer frame 3 and the outer cover 22. Therefore, the outer frame 3, the outer cover 22, and the hinge cover 44 form the outer shape of the rice cooker 100.

[0038] The hinge shaft 42 supports the main body 1 and the cover 2 so that they can be opened and closed freely. The hinge spring 43 is fixed to the outer cover 23 to always apply force to the cover 2 in the opening direction. On the substantially opposite side of the hinge shaft 42, which is the rotation center of the cover 2, a clamp 45 that is linked to the cover operating body 14 is arranged, and the clamp 45 is supported by the outer cover 23 through a clamp shaft 46. In addition, on the side of the outer frame 3 that is substantially opposite to the hinge portion 31, a clamp receiving portion 47 (not shown) that engages with the clamp 45 is provided.

[0039] The clamp 45 provided on the cover 2 rotates around the clamp shaft 46 as the central axis, and is connected to the clamp receiving portion 47 (see Figure 3 ) is engaged. The main body 1 and the cover body 2 are kept in a closed state by the engagement of the clamp 45 and the clamp receiving portion 47. On the other hand, when the cover body 2 is opened, the cover body operating body 15 is pressed to rotate the clamp 45 in the opposite direction, thereby releasing the engagement of the clamp 45 and the clamp receiving portion 47.

[0040] Reference numeral 48 is a decompression mechanism for making the interior of the pot 5 lower than the normal atmospheric pressure when the lid 2 is closed to the main body 1. The decompression mechanism 48 reduces the internal pressure of the sealed pot 5 when the solenoid 36 is energized and the pressure regulating valve 35 is moved downward to block the steam discharge path 34 after the pot 5 is accommodated in the pot accommodation portion 4 and the lid 2 is closed. In addition, when the pressure inside the pot 5 is lower than the atmospheric pressure by a certain value, the action of the decompression pump 49, which is the action source of the decompression mechanism 48, is stopped to keep the inside of the pot 5 in a decompressed state. Moreover, when the inside of the pot 5 is restored to the same pressure as the outside air from the decompressed state, the action of the decompression pump 49 is stopped to open the unillustrated path connecting the decompression pump 49 and the inside of the pot 5. In other words, the decompression mechanism 48 also serves as a pressure recovery mechanism for restoring the inside of the pot 5 from the decompressed state to the same pressure as the outside air.

[0041] Figure 32 is a perspective view of the rice cooker 100 with the outer cover 22 removed. In the figure, a pair of lid reinforcement plates 51 and 52 are arranged on the outer cover 23 as the base material of the cover body 2, which are divided into left and right. The lid reinforcement plates 51 and 52 are used to supplement the strength of the cover body 2, and are made of a metal material, for example, having higher rigidity than the outer cover 23 made of synthetic resin, and have a straight shape extending in the front-rear direction of the cover body 2 along both side surfaces of the outer cover 23. In addition, the lid reinforcement plates 51 and 52 have a structure fixed to the outer cover 35 by a fixing member such as a screw.

[0042] Holes 53 and 54 through which the clamp shaft 46 passes are provided on the front side of the cover reinforcement plates 51 and 52, and the ends of the clamp shaft 46 are passed through the holes 53 and 54, thereby connecting the clamp shaft 46 to the cover reinforcement plates 51 and 52. Therefore, the cover reinforcement plates 51 and 52 also function as bearings for the clamp shaft 46. In addition, holes 55 and 56 through which the hinge shaft 42 passes are provided on the rear side of the cover reinforcement plates 51 and 52, and the ends of the hinge shaft 42 are passed through the holes 55 and 56, thereby connecting not only the clamp shaft 46 but also the hinge shaft 42 to the cover reinforcement plates 51 and 52. The hinge shaft 42 and the clamp shaft 46 are both metal parts arranged on the cover body 2 and further arranged in the left and right directions of the electric rice cooker 100. By combining these parts with the cover reinforcement plates 51 and 52, the cover body 2 can be effectively reinforced, for example, against the pressure increase when the pressure in the pot 4 becomes above atmospheric pressure and the pressure decrease when it becomes below atmospheric pressure when cooking rice. Therefore, only by connecting the cover reinforcement plates 51 and 52 to the hinge shaft 42 and the clamp shaft 46, the strength of the cover body 2 and further the electric rice cooker 100 as a product can be increased, and the disadvantage of cost increase can be improved while avoiding the increase in product size and weight. In addition, by using the clamp shaft 46 as a connecting body, effective reinforcement in the clamp 45 is achieved with the minimum required structure, and by using the hinge shaft 42 as a connecting body, effective reinforcement in the rotation mechanism of the cover body 2 and the main body 1 is achieved with the minimum required structure.

[0043] 56 is a resin anti-slip portion formed to stop at a predetermined position when the clamp shaft 46 is inserted into the holes 53 and 54. The anti-slip portion 56 is roughly U-shaped when viewed from above, and is formed integrally with the outer cover 23 in a manner extending vertically from the outer cover 23. The anti-slip portion 56 has: a roughly plate-shaped main body 56-1, whose flat surface is arranged opposite to the hole 53; and plate-shaped side plates 56-2 and 56-3 serving as reinforcement ribs, which extend vertically from both side edges of the main body 56-1 toward the side surface of the outer cover 23. In addition, the height of the anti-slip portion 56 only needs to be above the position of the hole 53. In the present embodiment, it is formed to be roughly the same height as the upper surface of the cover reinforcement plate 51 provided with the hole 53. By such a configuration, the clamp shaft 46 is inserted into the holes 53 and 54 until the main body 56-1 of the anti-detachment portion 56 abuts, so that the clamp shaft 46 can be arranged at a predetermined position such as being connected to the cover reinforcement plates 51 and 52, and the clamp shaft 46 can be prevented from moving from the predetermined position and detaching from the holes 53 and 54. Therefore, the anti-detachment portion 56 has a function as an anti-detachment mechanism for the clamp shaft 46. In addition, a configuration in which the shaft restraining portion 57 described later is provided instead of the anti-detachment portion 56, and the shaft restraining portion 57 is provided on both end sides of the clamp shaft 46.

[0044] Figure 4 yes Figure 3 An enlarged view of box A, Figure 5 FIG. 5 is an enlarged top view of a main part of the shaft restraining portion 57. Figure 4 as well as Figure 5 , the cover reinforcement plate 52 is omitted.

[0045] Reference numeral 57 denotes a resin shaft restraining portion that prevents the clamp shaft 46 from being disengaged from the holes 53 and 54. The shaft restraining portion 57 includes plate-shaped ribs 57-1 and 57-2 extending vertically from the outer cover 23, and a plate-shaped reinforcing rib 57-3 connecting the lower portions of the ribs 57-1 and 57-2. The shaft restraining portion 57 is formed integrally with the outer cover 23 in a manner extending vertically from the outer cover 23. Figure 4 As shown, the ribs 57-1 and 57-2 are formed in substantially the same shape, and a space 58 is formed between the ribs 57-1 and 57-2. In addition, in the present embodiment, the interval W1 between the ribs 57-1 and 57-2 on the side of the clamp 45 is arranged to be smaller than the diameter D of the clamp shaft 46, and even if the clamp shaft 46 moves from a predetermined position, it will interfere with the ribs 57-1 and 57-2, thereby preventing the clamp shaft 46 from being disengaged from the holes 53 and 54.

[0046] The shaft restraining portion 57 of the present embodiment is made of resin and is configured such that, as the clamp shaft 46 is inserted into the space 58, the ribs 57-1 and 57-2 are elastically deformed outward by the pressure from the clamp shaft 46, and the clamp shaft 46 is pressed between the ribs 57-1 and 57-2. At this time, it is preferably configured such that the pressed clamp shaft 46 is aligned with the axis C extending from the center of the holes 53 and 54 of the cover reinforcement plates 51 and 52 in a plan view. In the present embodiment, as shown in FIG. Figure 5 As shown, the ribs 57-1 and 57-2 are symmetrically arranged with the axis C as the boundary, and the ribs 57-1 and 57-2 are formed into substantially the same shape, so that when the clamp shaft 46 is aligned with the axis C in a plan view, the respective elastic forces from the ribs 57-1 and 57-2 to the clamp shaft 46 are substantially the same. Therefore, when the clamp shaft 46 is pressed in, the clamp shaft 46 is aligned with the axis C in a plan view. In addition, in the ribs 57-1 and 57-2, for example, grooves or marks may be formed on the mutually opposing surfaces or the surfaces on the opposite sides thereof to match the height of the holes 53 and 54. When the clamp shaft 46 is inserted into the space 58 while being aligned with the grooves or marks, the height of the clamp shaft 46 becomes substantially the same as the holes 53 and 54. Therefore, when the clamp shaft 46 passes through the axis suppression portion 57, it is aligned with the position of the hole 54, and the alignment of the clamp shaft 46 to the hole 54 can be facilitated.

[0047] In addition, if Figure 5 As shown, the ribs 57-1 and 57-2 are formed in an eight-shaped shape with the axis C as the boundary when viewed from above, and are arranged so that the narrow side between the two ribs 57-1 and 57-2, that is, the side where the interval between the ribs 57-1 and 57-2 is W1, is located on the side of the clamp 45, and the wide side between the ribs 57-1 and 57-2, that is, the side where the interval between the ribs 57-1 and 57-2 is W2, is located on the opposite side of the clamp 45. Here, in the present embodiment, the ribs 57-1 and 57-2 are arranged so that the interval W1 is smaller than the diameter D of the clamp shaft 46, and the interval W2 is larger than the diameter D of the clamp shaft 46. In this way, the ribs 57-1 and 57-2 are arranged opposite to each other in a manner that at least one of them is inclined with respect to the insertion direction of the clamp shaft 46, and the narrow side between the ribs 57-1 and 57-2, that is, the side of the interval W1, is arranged to be located on the side of the clamp shaft 46, so that the clamp shaft 46 can be easily pressed into the gap between the ribs 57-1 and 57-2 from the side of the interval W2, and after the clamp shaft 46 is arranged at a predetermined position, the clamp shaft 46 can be prevented from being separated from the holes 53 and 54. In addition, in the present embodiment, the reinforcing ribs 57-3 are connected to the ribs 57-1 and 57-2 in a manner that the ribs 57-1 and 57-2 can be elastically deformed until the interval W1 becomes larger than the diameter D of the clamp shaft 46. In the present embodiment, the reinforcing ribs 57-3 are connected to the ribs 57-1 and 57-2 from the outer cover 23 to a position below the center of the ribs 57-1 and 57-2.

[0048] Next, refer to Figure 6 The assembly of the clamp 45 is described. First, the clamp shaft 46 is inserted into the space 58 of the shaft restraining portion 57 from the side where the interval W2 between the ribs 57-1 and 57-2 is wide in the direction of arrow F. At this time, since the interval W2 is larger than the diameter D of the clamp shaft 46, the clamp shaft 46 can be easily inserted into the space 58 between the ribs 57-1 and 57-2 without expanding the shaft restraining portion 57 by hand or the like.

[0049] If the clamp shaft 46 is pressed in the direction of arrow F after the clamp shaft 46 abuts against the ribs 57-1 and 57-2, the ribs 57-1 and 57-2 are elastically deformed outward by the external force from the clamp shaft 46, and the interval W1 between the ribs 57-1 and 57-2 on the clamp 45 side is expanded. Then, when W1 becomes an interval larger than the diameter D of the clamp shaft 46, the clamp shaft 46 passes through the shaft restraining portion 57 while being sandwiched between the ribs 57-1 and 57-2.

[0050] After that, the front end of the clamp shaft 46 is moved so as to be aligned with the position of the hole 54. Here, in the present embodiment, since the ribs 57-1 and 57-2 are arranged symmetrically with the axis C as the boundary, and the ribs 57-1 and 57-2 are formed in substantially the same shape, when the clamp shaft 46 passes through the axis suppression portion 57, the clamp shaft 46 is located at a position aligned with the axis C in a plan view, and the front end of the clamp shaft 46 moves to the position of the hole 54 simply by aligning the clamp shaft 46 with the position of the hole 54 in the height direction. Then, if the clamp shaft 46 is moved in the direction of the arrow F, the clamp shaft 46 is inserted and passed through the hole 54, and at the same time, passes through the holes 45-1 and 45-1 of the clamp 45, whereby the clamp 45 is attached to the clamp shaft 46 and inserted and passed through the hole 53.

[0051] The clamp shaft 46 moves in the direction of arrow F until it abuts against the main body 56-1 of the anti-detachment portion 56. When the clamp shaft 46 moves to a predetermined position, the other end of the clamp shaft 46 passes through between the ribs 57-1 and 57-2, and thus the clamp shaft 46 no longer exists between the ribs 57-1 and 57-2, and the ribs 57-1 and 57-2 are no longer subjected to external force from the clamp shaft 46. Then, the ribs 57-1 and 57-2 return to a state where they are not elastically deformed and are not subjected to external force, that is, a state where the interval W1 on the side of the clamp 45 is smaller than the diameter D and the interval on the opposite side of the clamp 45 is W2. Therefore, even if the clamp shaft 46 moves from a predetermined position, it contacts and interferes with the ribs 57-1 and 57-2, so that the clamp shaft 46 does not come out of the holes 53 and 54.

[0052] In addition, by expanding the interval W1 on the clamp 45 side of the ribs 57-1 and 57-2 to be greater than the diameter D and moving the clamp shaft 46 in the direction opposite to the arrow F, the clamp shaft 46 can be removed from the clamp 45 and the cover reinforcement plates 51 and 52, so that the clamp 45 can be easily disassembled even when replacing the clamp 45, for example.

[0053] As described above, the rice cooker 100 of this embodiment comprises: a clamp shaft 46 as an axis, which is supported to be rotatable by being inserted into the holes 53, 54 formed in the cover reinforcement plates 51, 52 as the bearing portion; and an axis suppression portion 57 as an anti-detachment mechanism, which is made of resin as a flexible material and is provided on at least one end side of the clamp shaft 46 to prevent the clamp shaft 46 from detaching from the cover reinforcement plates 51, 52. The axis suppression portion 57 is constructed to have a first state in which the clamp shaft 46 cannot pass through, and a second state in which a space 58 is formed as a through space through which the clamp shaft 46 can pass when subjected to external force.

[0054] With such a configuration, the shaft restraining portion 57 is provided on the outer cover 23 , and even if the shaft restraining portion 57 exists before the clamp shaft 46 is attached, the clamp shaft 46 can be attached to the cover reinforcement plates 51 , 52 .

[0055] In addition, the shaft restraining portion 57 of the present embodiment is configured to have at least two plate-like ribs 57-1 and 57-2, and the ribs 57-1 and 57-2 are in an "eight" shape when viewed from above, and are arranged opposite to each other in a manner that at least one of the ribs 57-1 and 57-2 is inclined relative to the insertion direction of the clamp shaft 46, and are arranged so that the side of the interval W1 between the ribs 57-1 and 57-2, which is a narrow side, is located on the side of the clamp shaft 46, and a space 58 is formed in the space between the ribs 57-1 and 57-2. Therefore, even if the clamp shaft 46 moves from a predetermined position, it will interfere with the ribs 57-1 and 57-2, so that the clamp shaft 46 will not be separated from the holes 53 and 54 of the cover reinforcement plates 51 and 52.

[0056] Furthermore, in the rice cooker 100 of the present embodiment, the shaft restraining portion 57 is subjected to an external force which presses the clamp shaft 46 into the shaft restraining portion 57. By inserting the clamp shaft 46 into the space 58, the interval W1 of the space 58 can be made larger than the diameter D of the clamp shaft 46. Therefore, for example, it is not necessary to perform other operations such as manually expanding the ribs 57-1 and 57-2, and the clamp shaft 46 can be installed on the cover reinforcement plates 51 and 52, thereby saving the laborious assembly operation of the clamp 45 and improving efficiency.

[0057] Furthermore, in the rice cooker 100 of the present embodiment, if the shaft restraining portion 57 is no longer subjected to external force from the second state in which the interval W1 of the space 58 is larger than the diameter D, then the first state in which the interval W1 of the space 58 is smaller than the diameter D is entered. Therefore, even if the shaft restraining portion 57 exists before the clamp shaft 46 is installed, the clamp shaft 46 can be installed on the cover reinforcement plates 51, 52. On the other hand, if the clamp shaft 46 is moved to a specified position, it will not be detached from the holes 53, 54 of the cover reinforcement plates 51, 52, thereby improving the efficiency of the assembly operation of the clamp 45.

[0058] Furthermore, in the rice cooker 100 of the present embodiment, when the shaft suppressing portion 57 is not provided on the other end side of the clamp shaft 46, an anti-detachment portion 56 for preventing the clamp shaft 46 from detaching from the cover reinforcement plates 51, 52 is provided on the other end side of the clamp shaft 46, and by inserting the clamp shaft 46 into the holes 53, 54 until the main body 56-1 abuts against the anti-detachment portion 56, the clamp shaft 46 can be arranged at a predetermined position such as to be connected to the cover reinforcement plates 51, 52, and the clamp shaft 46 can be prevented from moving from the predetermined position and detaching from the holes 53, 54.

[0059] In addition, in the rice cooker 100 of the present embodiment, the main body 1 of the rice cooker 100 and the cover body 2 that covers the upper surface opening of the main body 1 are provided, and the clamp shaft 46 is configured as a clamp shaft 46 provided on the cover body 2 to rotate the clamp 45 that clamps the main body 1 and the cover body 2. Therefore, the clamp shaft 46 can be easily mounted on the cover reinforcement plates 51 and 52, and the efficiency of the assembly operation of the clamp 45 can be improved.

[0060] In the rice cooker 100 of this embodiment, the shaft suppression portion 57 and the anti-detachment portion 56 are not provided on the outer cover 22 as an appearance component, so that no sink marks or a color difference from other places will be generated on the outer surface of the outer cover 22, which can prevent the appearance of the product from being affected.

[0061] In addition, the present invention is not limited to the above-mentioned embodiment, and various changes can be made without departing from the scope of the main purpose of the present invention. For example, in the present embodiment, the axis is set as the clamp axis 46, and the present invention is adopted in the clamp axis 46, but this is an example, for example, it can also be configured to set the axis as the hinge axis 42, and adopt the present invention in the hinge axis 42, even if there is an axis suppression portion of the hinge axis 42, the hinge axis 42 can be installed on the cover reinforcement plates 51, 52. In addition, the numerical values ​​exemplified in the embodiment are only examples, and can be appropriately changed according to the specifications of the rice cooker 100.

Claims

1. An electric rice cooker, characterized in that: have: a shaft inserted into a hole formed in the bearing portion and supported so as to be rotatable; and The anti-slip mechanism is made of a flexible material and is provided on at least one end of the shaft to prevent the shaft from slipping off from the bearing portion. The anti-slip mechanism comprises: The shaft is unable to pass through a first state; and The second state is formed by the external force to form the insertion space through which the shaft can pass.

2. The electric rice cooker according to claim 1, characterized in that: The two plate-shaped ribs of the anti-slip mechanism are arranged opposite to each other in such a manner that at least one of the ribs is inclined with respect to the insertion direction of the shaft. The ribs are arranged so that the narrower sides thereof are located on the shaft side.

3. The electric rice cooker according to claim 1 or 2, characterized in that: The external force refers to pressing the anti-slip mechanism in the axial direction.

4. The electric rice cooker according to claim 1 or 2, characterized in that: The anti-detachment mechanism enters the first state when no longer receiving the external force from the second state.

5. The electric rice cooker according to claim 1 or 2, characterized in that: When the anti-separation mechanism is not provided on the other end side of the shaft, an anti-separation portion for preventing the shaft from being separated from the bearing portion is provided on the other end side of the shaft.

6. The electric rice cooker according to claim 1 or 2, characterized in that: The electric rice cooker comprises a main body and a cover body which covers an opening of an upper surface of the main body in an openable and closable manner. The shaft is a clamp shaft provided on the cover body and used to rotate a clamp that locks the main body and the cover body.

7. The electric rice cooker according to claim 5, characterized in that: The anti-slip mechanism and the anti-slip portion are not provided on the exterior component.

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