JP2012042112A - Handle structure for door of heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a handle structure for a door of a heating cooker in which the rigidity of a handle part is high and which is superior in moment load resistance.SOLUTION: The body of a handle base 2 is fixed to a door 1. Projection parts projecting from the body toward the front side of the door 1 are formed on the handle base 2. A handle part 3 is provided with recesses for accommodating the projection parts, and first bosses protruding from the inner surface of the recesses to the inside of the recesses and having a female thread formed therein. The projection parts and the first bosses are fixed with male screws.

Description

  The present invention relates to a handle structure for a door of a heating cooker.

  Conventionally, as a door handle structure of a heating cooker, there is one described in Japanese Patent Application Laid-Open No. 2009-24970 (Patent Document 1). The handle of the handle structure of the door of this cooking device has a U-shape and is located in the upper part and the center part of the door.

  Moreover, as a handle structure of the door of the recent cooking-by-heating machine, for example, in order to be able to cook with a low temperature by heating with superheated steam, a low oxygen concentration of 0.5% or less can be realized. It has become. In the case of this heating cooker, since the high airtightness must be maintained between the door and the cooker body, the door is pressed against the body with a strong biasing force. Therefore, the handle structure of the door of this cooking device has a large rigidity that can withstand a large urging force that urges the door, and the user can open the door with a large force that opposes this urging force. As such, it has a handle with a large width and depth.

JP 2009-24970 A

  However, in the conventional door handle structure having a large handle, since the thickness of the both ends, which are the attachment portions of the handle, is thick on the front side, the handle on the front side is thick. In order to fix the screw to the handle fixing member, the length of the boss provided on the handle inevitably increases.

  As described above, the conventional door handle structure has a problem in that the moment load is weak because the length of the boss for attaching the handle is long.

  Then, the subject of this invention is providing the handle | steering-wheel structure of the door of a heating cooker which is large in the rigidity of a handle part and excellent in a moment load.

In order to solve the above problems, the handle structure of the door of the cooking device of the present invention is as follows:
A door that closes the opening of the cooking device;
A handle base having a main body fixed to the front side of the door, and a first convex portion protruding from the main body to the front side of the door;
And a handle portion screwed to the first connecting portion at the tip of the first convex portion.

  According to the present invention, it is possible to connect the handle base portion and the handle portion and to bring the first connection portion having a low strength closer to the handle portion. Accordingly, the moment load applied to the first connecting portion can be reduced, the strength of the handle structure can be increased, and the damage to the handle structure of the door can be greatly suppressed.

  Moreover, according to this invention, since the said 1st connection part can be kept away from a door, the space required for a grip can be ensured. Moreover, since the said 1st connection part can be kept away from a door, a handle part can be kept away from the door where a temperature rise tends to occur, and a door can be opened and closed safely.

In one embodiment,
The handle portion has a second convex portion that protrudes to a position closer to the door than the first connection portion in the front-rear direction of the door,
The handle is screwed to the handle base at the second connecting portion at the tip of the second convex portion.

  According to the above embodiment, the handle portion and the handle base portion are screwed at a plurality of locations, so that the load of the moment load applied between the handle base portion and the handle portion can be dispersed at a plurality of locations. Therefore, the strength of the door handle structure can be increased.

  Moreover, according to the said embodiment, regarding the screw fixation of a handle part and a handle base part, the 1st connection part with the weakest intensity | strength by the screw fixation using a 1st convex part, and the screw fixation using a 2nd convex part Therefore, the second connection portion having the weakest strength does not overlap in the front-rear direction of the door. Therefore, the strength of the handle structure can be further increased.

In one embodiment,
The first convex portion is inclined upward with respect to a plane including the front-rear direction and the width direction of the door.

  According to the embodiment, since the length of the arm of the first convex portion can be increased, the moment load performance in the vertical direction of the door can be greatly improved. Further, the first connection portion and the second connection portion do not overlap with each other in the vertical direction. Therefore, the strength of the handle structure can be further increased.

In one embodiment,
The handle base is screwed to the metal reinforcement via the door.

  According to the embodiment, since the handle base is screwed to the metal reinforcing material having high strength, the strength of the handle structure can be greatly improved.

In one embodiment,
Door,
A metal reinforcement fixed to the back side of the door;
A main body portion fixed to the front side of the door, and a protruding portion protruding from the main body portion to the front side of the door, and a resin handle base portion facing the metal reinforcing material via the door;
A concave portion that accommodates the protruding portion, and a resin handle portion that protrudes from the inner surface of the concave portion into the concave portion and has a first boss formed with a female screw,
The protruding portion and the first boss are fixed by screws with a first screw member.

  According to the above embodiment, since the handle is fixed to the protruding portion protruding from the handle base to the front side of the door, the length of the first boss for fixing the handle to the handle base by screws. Can be shortened by the length of the protruding portion on the front side. Therefore, in order to increase the rigidity of the handle portion, the length of the first boss becomes longer because the protruding portion is present even if the thickness of the end portions on both sides in the extending direction of the handle portion is increased. As a result, the moment load of the screw-fixed boss can be improved as compared with the conventional case. If the length of the screw-fixed boss is increased, the boss is easily bent due to a moment load and is easily damaged.

  Moreover, according to the said embodiment, since the rigidity of a protrusion part is large, it can be made excellent in the moment load resistance of a protrusion part.

  Therefore, the handle structure of the door can be made to have a large handle portion rigidity and excellent moment load resistance.

  Moreover, according to the said embodiment, since a handle part is the structure fixed to the resin-made handle base part which is hard to heat up compared with a metal with a 1st screw member, heat is handled via a 1st screw member. Conduction to the part can be prevented. Therefore, deterioration of the handle portion due to heat can be suppressed. In addition, as the resin material of the handle part, a material that is not high in heat resistance and excellent in decorativeness can be adopted, and the aesthetics of the handle part can be made excellent.

In one embodiment,
The protruding portion is closely fitted in the concave portion of the handle portion.

  According to the embodiment, since the protruding portion is closely fitted in the concave portion of the handle portion, a moment load can be applied to the protruding portion having a high rigidity. Therefore, the strength of the handle structure of the door can be increased, and the handle portion can be accurately positioned with respect to the handle base portion.

In one embodiment,
The handle portion has a second boss that protrudes from the inner surface of the recess into the recess and is formed with an internal thread.
The main body portion of the handle base and the second boss are screwed with a second screw member,
The tightening end surface of the first boss is located on the front side of the door with respect to the tightening end surface of the second boss.

  According to the embodiment, the tightening end surface of the first boss is located on the front side of the door with respect to the tightening end surface of the second boss. The joint of the first screw member with the weakest moment load and the joint of the second screw member with the weakest moment load when fixing the screw between the main body and the second boss are present at the same position in the front-rear direction of the door. There is no. Therefore, by fixing the handle base portion and the handle portion with screws, the portion with weak moment load resistance in the front-rear direction of the door does not overlap, and the moment load resistance can be improved.

In one embodiment,
The protruding portion is inclined in the vertical direction of the door with respect to a plane including the front-rear direction and the width direction of the door.

  According to the above embodiment, since the protruding portion is inclined in the vertical direction of the door with respect to the plane including the front-rear direction and the width direction of the door, when the main body portion and the handle portion of the handle base are screwed, The fastening surfaces of all the screw members do not exist at the same position in the vertical direction of the door, and the length of the arm with respect to the moment load can be increased. Accordingly, it is possible to withstand a large moment load applied to the handle portion.

  Moreover, according to the said embodiment, since the protrusion part inclines in the said up-down direction with respect to the plane containing the said front-back direction and the width direction, the handle part itself is made to the plane containing the said front-back direction and the width direction. Can be easily tilted in the vertical direction, and the handle can be easily gripped.

In one embodiment,
Comprising a metal reinforcement fixed to the back side of the door,
The handle base is screwed to the metal reinforcement via the door, while the handle is screwed to the handle base and is not screwed to the metal reinforcement.

  The metal reinforcement is indispensable to reinforce the handle structure of the door. On the other hand, since the metal reinforcement is close to the heat source, it is easy to raise the temperature and the member screwed to the metal reinforcement is a metal reinforcement. It becomes easy to heat up with the heat from.

  According to the embodiment, the handle base is screwed to the metal reinforcement, so that the handle base can be securely and stably fixed to the door. The strength can be increased.

  Further, according to the above embodiment, since the handle is screwed to the handle base and is not screwed to the metal reinforcement, heat is removed from the metal reinforcement via the screw member. Therefore, the temperature rise of the handle portion can be greatly suppressed. Therefore, deterioration of the handle portion due to heat can be suppressed, and a person can be prevented from feeling uncomfortable due to heat from the handle portion. The handle base is made of resin, and the degree of temperature rise is much smaller than that of metal reinforcement, so that the handle raises the temperature so that people feel uncomfortable due to the heat from the handle base. There is almost no.

  In addition, according to the embodiment, the handle portion is screwed to the handle base portion and is not screwed to the metal reinforcing material, so that the heat resistance is not high as a resin material of the handle portion, A material with excellent decorativeness can be adopted, and the aesthetics of the handle can be made excellent.

  According to the above embodiment, a two-stage fixing method is employed in which the handle base is screwed to the metal reinforcement and the handle is screwed to the handle base. Therefore, while the handle base portion is formed of a resin material having excellent heat resistance, the handle portion can be formed of a resin material having poor decorativeness but not good heat resistance. Therefore, the door handle structure can be excellent in rigidity and moment load resistance, excellent in heat resistance, excellent in decorativeness and aesthetic appearance.

  According to the handle structure of the door of the heating cooker of the present invention, the handle base portion and the handle portion can be connected and the first connection portion having a low strength can be brought close to the handle portion. This moment load can be reduced, the strength of the door can be increased, and damage to the handle structure of the door can be greatly suppressed.

  Moreover, according to this invention, since the said 1st connection part can be kept away from a door, the space required for a grip can be ensured. Moreover, since the said 1st connection part can be kept away from a door, a handle part can be kept away from the door where a temperature rise tends to occur, and a door can be opened and closed safely.

  Moreover, according to the handle structure of the door of the heating cooker of the embodiment, the handle portion is fixed to the protruding portion protruding from the handle base portion to the front side of the door. Even if the thickness in the front-rear direction is increased to increase the rigidity, the length of the first boss for fixing the screw of the handle portion does not increase, and the moment load resistance of the first boss does not decrease. Further, since the protruding portion has higher rigidity than the boss, it can be made excellent in moment load resistance. Therefore, the rigidity of the door handle structure can be increased, and the moment load resistance of the door handle structure can be improved.

  Moreover, according to the handle structure of the door of the heating cooker of one embodiment, since the handle portion is configured to be screwed to the resin-made handle base portion with the first screw member, heat is passed through the first screw member. Conduction to the handle part can be prevented and deterioration of the handle part due to heat can be suppressed. In addition, as the resin material of the handle part, a material that is not high in heat resistance and excellent in decorativeness can be adopted, and the aesthetics of the handle part can be made excellent.

It is a front view of the handle structure of the door of the steam cooker which is one Embodiment of the handle structure of the door of the heating cooker of this invention. It is an expansion perspective view when a part of door handle structure is seen from the back side of the door handle structure. It is a top view when the handle structure of a door is seen from the back side of a door. It is an expansion perspective view when a part of handle base is seen from the back side of a handle base. It is a figure when a handle base is seen from the upper part upper side. It is a figure when the whole handle base is seen from the front side of the handle base. It is a figure when the whole handle base is seen from the back side of the handle base. It is a figure when a handle base is seen from the side of the 1st protrusion part side of a handle base. It is a figure when a handle part is seen from the front side of a handle part. It is a figure when the handle part is seen from the upper surface side of the handle part. It is a figure when a handle part is seen from the back side of a handle part. It is a figure when a handle part is seen from the side of a handle part. It is an expansion perspective view when a part of handle part is seen from the back side of a handle part. It is a figure when the handle assembly which consists of a handle base part and a handle part is seen from the upper surface. It is a figure when a handle assembly is seen from the back side of a handle base. It is a figure when a handle assembly is seen from the side. It is a figure when what cut | disconnected the handle | base handle | base part so that the thickness might be divided into 2 equal | vertices was seen from the cutting | disconnection side. It is a figure when what cut | disconnected the handle part so that the thickness might be divided into 2 equally perpendicular | vertical, and was seen from the cutting | disconnection side. It is a figure when what cut | disconnected the handle assembly so that the thickness might be divided | segmented into 2 equally perpendicular | vertical, from the cutting | disconnection side. It is a perspective view of what cut the handle assembly so that the thickness might be divided into two equally perpendicularly.

  Hereinafter, the present invention will be described in detail with reference to the drawings. In the present embodiment, the vertical direction and the front-rear direction refer to the vertical direction and the front-rear direction of the door 1 described below unless otherwise specified.

  FIG. 1 is a front view of a door handle structure of a steam cooker, which is an embodiment of the door handle structure of a heating cooker according to the present invention.

  This steam cooker door handle structure (hereinafter simply referred to as a handle structure) includes a door 1, a handle base 2, and a handle 3.

  The door 1 has a front rectangular shape. The door 1 has a through-hole 4 having a front rectangular opening, and the opening is covered with heat-resistant glass (not shown) to form a door of a steam cooker. The door 1 has an operation panel region 5 constituting an operation panel on one side in the width direction of the opening. The operation panel region 5 has a first through hole 6, a second through hole 7, and a third through hole 8. A color liquid crystal display unit (not shown) is formed at a position overlapping the first through hole 6 in the front-rear direction of the door 1, while at a position overlapping the second through-hole 7 and the third through hole 8 in the front-rear direction. A button group (not shown) is formed. Although not described in detail, the button group is used to stop heating or return the screen display of the color liquid crystal display to the previous screen display.

  The handle base 2 is made of a resin mixture containing PBT resin (polybutylene terephthalate resin) and ABS resin (acrylic, butadiene, styrene copolymer synthetic resin). The handle base 2 has a shape extending in one direction. The handle base 2 is attached to the front side of the door 1. Specifically, the handle base is screwed to the door 1 while covering the upper surface of the door 1, the upper end of the front surface of the door 1, and the upper ends of the side surfaces on both sides of the door 1.

  The handle part 3 is made of ABS resin. The handle 3 is attached to the front side of the handle base 2. The handle part 3 includes a grip part 11 that is gripped by a person, a first attachment part 12, and a second attachment part 13, and the grip part 11 is located at the center of the handle part 3 in the width direction of the door 1. The first mounting portion 12 is positioned at one end portion in the width direction, and the second mounting portion 13 is positioned at the other end portion in the axial direction. The handle part 3 has a symmetrical structure with respect to the center of the grip part 11. The first mounting portion 12 is fixed to the end of the handle base 2 on one side in the width direction, and the second mounting portion 13 is fixed to the end of the handle base 2 on the other side in the width direction. ing.

  As shown in FIG. 1, the side surfaces of the first mounting portion 12 and the second mounting portion 13 are convex surfaces 9. An end portion of the convex surface 9 opposite to the handle base portion 2 side is smoothly connected to a flat portion 15 that forms the front surface of the handle portion 3. The plane portion 15 exists over the grip portion 11, the first attachment portion 12, and the second attachment portion 13. As shown in FIG. 1, in the handle structure, the thickness of the door 1 of the grip portion 11 in the front-rear direction is less than half of the maximum thickness of the first attachment portion 12 in the front-rear direction.

  FIG. 2 is an enlarged perspective view of a part of the handle structure as viewed from the back side of the handle structure.

  As shown in FIG. 2, the handle structure includes an angle 23 as an example of a metal reinforcement, and the angle 23 is screwed to the upper part on the back side of the resin door 1. The angle 23 has a plurality of through holes 24, 25, 26, 27, and each through hole 24, 25, 26, 27 extends in the front-rear direction of the door 1. FIG. 3 is a plan view of the handle structure when viewed from the back side of the door 1. As shown in FIG. 3, the angle 23 covers a portion on the upper side of the through hole 4 on the back surface of the door 1 over substantially the entire width direction of the door 1.

  FIG. 4 is an enlarged perspective view of a part of the handle base 2 when viewed from the back side of the handle base 2.

  As shown in FIG. 4, the handle base 2 has a plurality of bosses 34, 35, 36, and 37 on the back surface facing the front surface of the door 1, and each of the bosses 34, 35, 36, and 37 is threaded. The rear surface of the door 1 protrudes from the rear surface. 2 and 4, a screw member (not shown) is inserted into the through holes 24, 25, 26, and 27 of the angle 23 from the rear side of the door 1, and the shaft portion of the screw member is connected to the door 1 with reference to FIGS. It is penetrated and screwed into each boss 34, 35, 36, 37. In this way, the handle base 2 is screwed securely and stably to the angle 23 via the door 1.

  FIG. 5A is a view of the handle base 2 as viewed from above the upper side of the handle base 2. As shown in FIG. 5A, the handle base 2 has a main body portion 40 and two protruding portions 41 and 42, and the main body portion 40 is screwed to the front side of the door 1 (see FIG. 1). . Each said protrusion part 41 and 42 comprises the 1st convex part. One first protruding portion 41 protrudes from one longitudinal end portion of the main body portion 40 toward the front side of the door 1, while the other second protruding portion 42 extends from the other longitudinal end portion of the main body portion 40 to the door. Projecting to the front of 1.

  FIG. 5B is a diagram when the entire handle base 2 is viewed from the front side of the handle base 2. As shown in FIG. 5B, the handle base 2 has a recess 45 on the front side. The handle base 2 has a plane-symmetric structure with respect to a plane including the width direction of the handle base 2 that bisects the handle base 2 into two perpendicularly to the longitudinal direction.

  FIG. 5C is a diagram when the entire handle base 2 is viewed from the back side of the handle base 2. As shown in FIG. 5C, each of the protruding portions 41 and 42 has recesses 50 and 51 for accommodating bolts (not shown) as an example of the first screw member, and the front side of the recesses 50 and 51 is provided. Bolt insertion holes 53 and 54 are formed on the end face. The bolt insertion holes 53, 54 extend in the same direction as the protruding direction of the protruding portions 41, 42, and extend obliquely upward in the vertical direction with respect to the plane including the front-rear direction and the width direction of the door 1. Exist. The handle base 2 has bolt insertion holes 58 and 59 on the end side in the longitudinal direction of the handle base 2 with respect to the protruding portions 41 and 42.

  FIG. 5D is a view of the handle base 2 when viewed from the side of the handle base 2 on the first protruding portion 41 side. As shown in FIG. 5D, the protruding portions 41, 42 of the handle base 2 are inclined upward in the vertical direction of the main body 40 with respect to a plane including the front-rear direction and the longitudinal direction of the main body 40 of the handle base 2. Yes. In other words, in the handle structure of this embodiment, the protruding portions 41 and 42 are inclined upward in the vertical direction of the door 1 with respect to the plane including the front-rear direction and the width direction of the door 1.

  6A is a diagram when the handle portion 3 is viewed from the front side of the handle portion 3, and FIG. 6B is a diagram when the handle portion 3 is viewed from the upper surface side of the handle portion 3. As shown in FIGS. 6A and 6B, the handle portion 3 has a structure in which the longitudinal direction of the plane portion 15 is bisected vertically and is plane-symmetric with respect to a plane including the width direction of the plane portion 15. ing.

  FIG. 6C is a view of the handle part 3 when viewed from the back side of the handle part 3. As shown in FIG. 6C, the handle part 3 has a recess 80, first bosses 82 and 83, and second bosses 84 and 85 as an example of second protrusions on the back side of the handle part 3. Yes. The recess 80 accommodates the protruding portions 41 and 42 (see FIG. 5B). Each of the first bosses 82 and 83 and the second bosses 84 and 85 is internally threaded. Each of the first bosses 82, 83 and the second bosses 84, 85 extends from the inner surface of the recess 80 to the rear side in the front-rear direction of the door 1.

  FIG. 6D is a view of the handle portion 3 when viewed from the side of the handle portion 3. As shown in FIG. 6D, the handle portion 3 is inclined upward with respect to the horizontal plane in a state in which the rear end surface 88 of the handle portion 3 in the front-rear direction of the door 1 is parallel to the vertical surface. Yes. In other words, in the handle structure of this embodiment, the handle 3 is inclined upward in the vertical direction of the door 1 with respect to a plane including the front-rear direction and the width direction of the door 1.

  FIG. 7 is an enlarged perspective view of a part of the handle part 3 when viewed from the back side of the handle part 3.

  As shown in FIG. 7, the length in the front-rear direction of the first bosses 82, 83 is shorter than the length in the front-rear direction of the second bosses 84, 85. 63 is located on the front side of the door 1 with respect to the fastening end surfaces 64 and 65 of the second bosses 84 and 85. In other words, the second bosses 84 and 85 protrude to a position closer to the door 1 than the protruding portions 41 and 42 in the front-rear direction of the door 1. Further, the first bosses 82 and 83 are positioned above the second bosses 84 and 85 in the vertical direction of the handle portion 3. In this handle structure, the first bosses 82 and 83 are present at the front and rear direction of the protruding portions 41 and 42, while the second bosses 84 and 85 are positioned on the front surfaces of the protruding portions 41 and 42. It exists in a position that does not overlap in the front-rear direction.

  A first bolt (not shown) as a first screw member is inserted into the bolt insertion holes 53 and 54 (see FIGS. 4 and 5C) from the back surface side of the handle base portion 2 to protrude the first bolt 41. , 42 (see FIG. 5A) are screwed into the first bosses 82, 83 (see FIG. 7), and the tips of the protruding portions 41, 42 are screwed to the first bosses 82, 83. Yes. The tips of the protruding portions 41 and 42 constitute a first connection portion. Further, a second bolt (not shown) as a second screw member is inserted into the bolt insertion holes 58 and 59 (see FIGS. 4 and 5C) from the back surface side of the handle base 2, and the main body of the handle base 2 is inserted. The portion protruding from the tip of the portion 40 is screwed into the second bosses 84 and 85 (see FIG. 7), and the main body portion 40 is screwed to the fastening end surfaces 64 and 65 of the second bosses 84 and 85. The tightening end surfaces 64 and 65 of the second bosses 84 and 85 constitute a second connection portion. In this way, the handle portion 3 is screwed to the handle base portion 2.

  In this handle structure, the handle portion 3 is screwed to the handle base portion 2 while not being screwed to the angle 23. In this handle structure, there is no metal member that contacts both the angle 23 and the handle 3. Further, in this handle structure, the protruding portions 41 and 42 are closely fitted in the concave portion 80 (see FIG. 6C) of the handle portion 3 in the vertical direction of the door 1.

  FIG. 8A is a view of the handle assembly 94 including the handle base portion 2 and the handle portion 3 when viewed from the upper surface thereof. 8B is a view when the handle assembly 94 is viewed from the back side of the handle base 2, and FIG. 8C is a view when the handle assembly 94 is viewed from the side. As shown in FIG. 8C, the handle portion 3 is inclined upward with respect to the front-rear direction of the handle base portion 2.

  FIG. 9A is a view of the handle base 2 as viewed from the cut side when the handle base 2 is cut so as to bisect its thickness vertically. FIG. 9B is a view of the handle 3 cut from the cut side so that the thickness of the handle 3 is cut into two equal parts. FIG. 9C is a view of the handle assembly 94 cut from the cut side so as to bisect the thickness vertically, and FIG. 9D is a view of the cut handle assembly 94. It is a perspective view. As illustrated in FIG. 9D, the lower surfaces of the recesses 50 and 51 of the protruding portions 41 and 42 of the handle base 2 are inclined upward with respect to the front-rear direction of the handle base 2.

  According to the handle structure of the above embodiment, the handle base 2 and the handle 3 can be connected, and the first connecting portion having a low strength can be brought close to the handle 3. Therefore, the moment load applied to the first connection portion can be reduced, the strength of the handle structure can be increased, and damage to the handle structure can be greatly suppressed.

  In addition, according to the handle structure of the above embodiment, the first connecting portion can be moved away from the door 1, so that a space necessary for gripping can be secured. Moreover, since the said 1st connection part can be kept away from the door 1, the handle part 3 can be kept away from the door 1 which a temperature rise tends to occur, and the door 1 can be opened and closed safely.

  Further, according to the handle structure of the above embodiment, the handle portion 3 and the handle base portion 2 are fixed by screws at a plurality of locations, so that the moment load applied between the handle base portion 2 and the handle portion 3 is reduced. It can be dispersed in multiple places. Therefore, the strength of the handle structure can be increased.

  Further, according to the handle structure of the above-described embodiment, the first connection having the weakest strength by screw fixing using the protruding portions 41 and 42 which are the first convex portions with respect to screw fixing between the handle portion 3 and the handle base portion 2. And the second connecting portion having the weakest strength by screw fixing using the second bosses 84 and 85 that are the second convex portions do not overlap in the front-rear direction of the door 1. Therefore, the strength of the handle structure can be further increased.

  Further, according to the handle structure of the above embodiment, since the protruding portions 41 and 42 are inclined above the door 1 and the length of the arms of the protruding portions 41 and 42 can be increased, the vertical direction of the door 1 is increased. The moment load performance of the can be greatly improved. Further, the first connection portion and the second connection portion do not overlap with each other in the vertical direction. Therefore, the strength of the handle structure can be further increased.

  Further, according to the handle structure of the above embodiment, the handle base 2 is screwed to the angle 23 having a high strength, so that the strength of the handle structure can be greatly improved.

  Further, according to the handle structure of the above embodiment, the handle portion 3 is fixed to the protruding portions 41 and 42 protruding from the handle base portion 2 to the front side of the door 1. The lengths of the first bosses 82 and 83 for screw fixing to the base 2 can be shortened by the length of the front side of the protruding portions 41 and 42. Therefore, in order to increase the rigidity of the handle portion 3, even if the thickness of the end portions on both sides in the extending direction of the handle portion 3 is increased, the protruding portions 41 and 42 exist, so that the first boss The lengths of 82 and 83 are not increased, and the moment load resistance of the screw-fixed boss can be improved as compared with the conventional case. If the length of the screw-fixed boss is increased, the boss is easily bent due to a moment load and is easily damaged.

  Further, according to the handle structure of the above embodiment, since the protruding portions 41 and 42 have high rigidity, the moment load resistance of the protruding portions 41 and 42 can be made excellent.

  Therefore, the handle structure can have a high rigidity and a high moment load resistance while the handle portion 3 has a high rigidity.

  Further, according to the handle structure of the above embodiment, the handle portion 3 is configured to be screwed to the resin handle base portion 2 which is less likely to be heated than the metal by the first screw member, so that the heat is the first. Conduction to the handle portion 3 via the screw member can be prevented. Therefore, deterioration of the handle portion 3 due to heat can be suppressed. Further, as the resin material of the handle part 3, it is possible to adopt an ABS resin that is not high in heat resistance and excellent in decorativeness, and can make the handle part 3 have an excellent aesthetic appearance.

  Further, according to the handle structure of the above-described embodiment, the protruding portions 41 and 42 are closely fitted in the concave portion 80 of the handle portion 3 in the vertical direction of the door 1, so that the moment load has a large rigidity. 41, 42 can be loaded. Therefore, the strength of the handle structure can be increased, and the handle portion 3 can be accurately positioned with respect to the handle base portion 2.

  Further, according to the handle structure of the above embodiment, the tightening end surfaces 62 and 63 of the first bosses 82 and 83 are positioned on the front side of the door 1 with respect to the tightening end surfaces 64 and 65 of the second bosses 84 and 85. Therefore, in the screw fixing between the projecting portions 41 and 42 and the first bosses 82 and 83, the seam of the first screw member having the weakest moment load in the screw fixing, and in the screw fixing between the main body 40 and the second bosses 84 and 85, The joint of the second screw member having the weakest moment load does not exist at the same position in the front-rear direction of the door 1. Therefore, by fixing the handle base portion 2 and the handle portion 3 with screws, the portion with weak moment load resistance in the front-rear direction of the door 1 does not overlap, and the moment load resistance can be improved.

  Further, according to the handle structure of the above embodiment, the protruding portions 41 and 42 are inclined in the vertical direction of the door 1 with respect to the plane including the front-rear direction and the width direction of the door 1. When the portion 40 and the handle portion 3 are fixed with screws, the tightening surfaces of all the screw members do not exist at the same position in the vertical direction of the door 1, and the length of the arm with respect to the moment load can be increased. . Therefore, it is possible to withstand a large moment load applied to the handle portion 3.

  Further, according to the handle structure of the above-described embodiment, the protruding portions 41 and 42 are inclined in the vertical direction with respect to the plane including the front-rear direction and the width direction of the door 1. In addition, it is possible to easily incline up and down with respect to a plane including the width direction, and to make it easier to grip the handle.

  Further, according to the handle structure of the above embodiment, the handle base 2 is fixed to the angle 23 by screws, so that the handle base 2 can be securely and stably fixed to the door 1. The strength of the handle structure can be increased.

  Further, according to the handle structure of the above embodiment, since the handle portion 3 is screwed to the resin handle base portion 2 and is not screwed to the angle 15, heat is passed through the screw member. Thus, no heat is transmitted from the angle 15 to the handle portion 3, and the temperature rise of the handle portion 3 can be greatly suppressed. Therefore, deterioration of the handle portion 3 due to heat can be suppressed, and a person can be prevented from feeling uncomfortable due to heat from the handle portion 3. Further, as the resin material of the handle part 3, a material such as ABS resin that is not high in heat resistance and excellent in decorativeness can be adopted, and the aesthetics of the handle part 3 can be made excellent. The handle base 2 is made of resin, and the degree of temperature rise is much smaller than that of the angle 15. Therefore, the handle 3 is raised to the extent that a person feels uncomfortable due to the heat from the handle base 2. There is almost no warming.

  Further, according to the handle structure of the above-described embodiment, a two-stage fixing method is employed in which the handle base 2 is screwed to the angle 15 and the handle 3 is screwed to the handle base 2. Therefore, while the handle base 2 is formed of a resin material having excellent heat resistance, the handle portion 3 can be formed of a resin material having poor decorativeness but not good heat resistance. Therefore, the handle structure can be excellent in rigidity and moment resistance, excellent in heat resistance, and excellent in decorativeness and aesthetic appearance.

  In the handle structure of the above-described embodiment, the first convex portions are the protruding portions 41 and 42. However, in the present invention, the first convex portion may be a boss with a female screw cut, and is inserted from the handle portion side. The shaft part in which the male screw of the screw member is cut may be screwed into the female screw of the boss constituting the first convex part.

  Further, in the handle structure of the above embodiment, the handle portion 3 has the concave portion 80 for accommodating the protruding portions 41 and 42, and the protruding portions 41 and 42 are accommodated in the concave portion 80. In the invention, the handle portion may not have a concave portion that accommodates the first convex portion of the handle base portion, and the first convex portion may be configured to be screwed to the handle portion in a visible state.

  In the handle structure of the above embodiment, the second convex portions are the bosses 84 and 85. However, in the present invention, the second convex portion protrudes to the door side in the front-rear direction of the door, and the screw member A protrusion having a screw insertion hole that can lock the head may be used. Then, by screwing the shaft portion of the screw member inserted through the screw insertion hole of the second projection into the boss of the handle base provided with the female screw, the second projection is The structure may be such that the handle base is fixed with screws.

  Further, in the handle structure of the above embodiment, the protruding portions 41 and 42 as the first convex portions have a substantially rectangular shape in a cross section parallel to the front surface of the door 1, but the first convex portions are The cross section parallel to the front surface of the door may have any shape in the cross section parallel to the front surface of the door, such as a substantially circular shape or a polygonal shape such as a trapezoid.

  Further, in the handle structure of the above embodiment, the bosses 84 and 85 as the second convex portions have a substantially circular shape in a cross section parallel to the front surface of the door 1. The cross section parallel to the front surface of the door may have any shape in the cross section parallel to the front surface of the door, such as a substantially rectangular shape or a polygonal shape such as a trapezoid.

  In the handle structure of the above embodiment, the handle base 2 is formed of a resin mixture containing PBT resin (polybutylene terephthalate resin) and ABS resin (acrylic, butadiene, styrene copolymer synthetic resin). On the other hand, the handle part 3 was formed of ABS resin. However, in the present invention, each of the handle base portion and the handle portion may be formed of polyimide resin, epoxy resin, fluorine resin, PEEK resin, FRP resin, or a mixed resin thereof. In the present invention, each of the handle base portion and the handle portion includes at least one resin of polyimide resin, epoxy resin, fluorine resin, PEEK resin, and FRP resin, and at least one resin of PBT resin and ABS resin. And may be formed of any other resin material. The handle base is preferably formed of a heat-resistant resin material such as PBT resin, polyimide resin, epoxy resin, fluorine resin, or PEEK resin, and the handle is excellent in decorativeness such as ABS resin or FRP resin. It is preferable to form with a resin material.

  Further, in the handle structure of the above-described embodiment, the protruding portions 41 and 42 protrude while being inclined upward in the vertical direction of the door 1 with respect to the plane including the front-rear direction and the width direction of the door 1. Then, the protruding portion may protrude to the lower side in the vertical direction of the door with respect to the plane including the front-rear direction and the width direction of the door, and the protruding portion is relative to the plane including the front-rear direction and the width direction of the door. Or in a parallel direction (horizontal direction when the cooking device is placed on a horizontal surface).

  Further, in the handle structure of the above embodiment, the metal reinforcing material is an angle having an L-shaped section. However, in the present invention, the metal reinforcing material is, for example, a flat metal extending in one direction. It does not have to be an angle such as a reinforcing material. In the present invention, the metal reinforcing material may have any shape as long as it has a shape (structure) that can face the handle base in the front-rear direction of the door via the door. In addition, the area of the projection of the metal reinforcing material projected on the door in the front-rear direction of the door may be larger, equal or smaller than the area of the projection of the handle base projected on the door in the front-rear direction of the door. But it ’s okay. In short, as long as most (including all) of the handle base is in a shape (structure) that can face the metal reinforcing material in the front-rear direction of the door via the door, the metal reinforcing material may have any shape. .

  In the handle structure of the above embodiment, the protruding portions 41 and 42 are closely fitted in the concave portion 80 (see FIG. 6C) of the handle portion 3 in the vertical direction of the door 1, but in the present invention, the protruding portions The part may be fitted in the vertical direction of the door 1 with a gap in the recess of the handle part.

  In the handle structure of the above embodiment, the handle portion 3 has the second bosses 84 and 85 that do not oppose the protruding portions 41 and 42 in the front-rear direction of the door 1, but in this invention, the handle portion is The second boss may not be provided. This is realized, for example, when the volume of the protruding portion is large and the number of first bosses is large.

  Further, in the handle structure of the above embodiment, the handle portion 3 is not screwed to the angle 23. However, in this invention, the handle portion may be screwed to the metal reinforcing material.

  In the handle structure of the above embodiment, the handle base portion 2 and the handle portion 3 extend in the width direction of the door 1, but in this invention, the handle base portion and the handle portion extend in the height direction of the door. May be present.

  Moreover, the handle structure of the heating cooker of the said embodiment was used for the steam cooker. Here, the handle structure of the heating cooker according to the present invention is used not only in an oven range using superheated steam but also in an oven, range, microwave oven or IH cooking heater, microwave oven, etc. not using superheated steam. May be. Moreover, the handle structure of the heating cooker of this invention may be used for heating cookers, such as an oven, a range, or an IH cooking heater using superheated steam. In short, the handle structure of the cooking device of the present invention may be used in any cooking device as long as it is a cooking device capable of heating ingredients.

DESCRIPTION OF SYMBOLS 1 Door 2 Mounting base 3 Mounting part 23 Angle 40 Main part of handle base 41,42 Protruding part 62,63 First boss tightening surface 64,65 Second boss tightening surface 80 Handle part recess 82,83 First boss 84,85 Second Boss

Claims (4)

A door that closes the opening of the cooking device;
A handle base having a main body fixed to the front side of the door, and a first convex portion protruding from the main body to the front side of the door;
A handle structure for a door of a heating cooker, comprising: a handle portion screwed to a first connection portion at a tip of the first convex portion. In the handle structure of the door of the heating cooker according to claim 1,
The handle portion has a second convex portion that protrudes to a position closer to the door than the first connection portion in the front-rear direction of the door,
The handle structure for a door of a heating cooker, wherein the handle is screwed to the handle base at a second connecting portion at the tip of the second convex portion. In the handle structure of the door of the heating cooker according to claim 1 or 2,
The handle structure of the door of the heating cooker, wherein the first convex portion is inclined upward with respect to a plane including the front-rear direction and the width direction of the door. In the handle structure of the door of the heating cooker as described in any one of Claim 1 to 3,
A handle structure for a door of a heating cooker, wherein the handle base is screwed to the metal reinforcement via the door.

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