CN215907665U - Ratchet wheel assembly and cooking appliance comprising same - Google Patents

Abstract

The utility model relates to a ratchet assembly and a cooking appliance comprising the same. The ratchet wheel assembly comprises a fixed frame (13), a ratchet wheel (9) and a roller (10). The ratchet wheel (9) is provided with a first groove (91) and a first connecting arm (94). The roller (10) is movably arranged in the fixed frame (13). The ratchet wheel (9) is rotatably mounted in the holder (13) such that the roller is engaged in the first recess (91) when the ratchet wheel (9) is rotated to the first position by an external force acting on the first connecting arm (94). According to the ratchet wheel assembly, the groove in the ratchet wheel is matched with the roller, so that the door body can be kept in a specific position, and the user experience of the cooking appliance is improved.

Description

Ratchet wheel assembly and cooking appliance comprising same

Technical Field

The utility model relates to the field of cooking appliances, in particular to a ratchet wheel assembly and a cooking appliance comprising the same.

Background

With the development of electronic technology, more and more automatic kitchen appliances appear in the market so as to meet various requirements of people. Particularly in the field of cooking appliances, by integrating an electronic control system in a cooking appliance (such as a microwave oven or an oven), the cooking appliance can automatically execute a cooking program, and the efficiency of cooking operation is greatly improved.

A cooking appliance generally includes a cabinet and a door. The door body can close the cooking cavity in the box body. The user can be through opening the door body, and the edible material that will wait to cook is put into the culinary art intracavity. Then the cooking cavity is closed by closing the door body, and then the food in the cooking cavity is cooked. In the prior art, the door body is mounted to the cabinet by a hinge so as to be freely rotatable between a fully opened position and a closed position. Since there is no specific suspension position in the rotation process of the door body, the user must hold the door body at a specific position by hand in order to put the food to be cooked into the cooking cavity or take the cooked food out of the cooking cavity. For example, for a cooking appliance with a door opened up and down, in the opening process of the door body, a user needs to hold the door body with one hand and put or take out food with the other hand, which brings inconvenience to the user. For the cooking appliance with the left and right door, the door body is easy to swing left and right when opened and cannot be stably kept in a fixed position, which also causes difficulty for a user to take and put food.

In order to solve the above problems, some cooking appliances employ a damping hinge to connect a door body to a cabinet of the cooking appliance. Although the damping hinge enables the door body to hover at any position, a user always needs to apply pushing force or pulling force to the door body in the process of opening or closing the door body, which causes inconvenience for the user.

Therefore, there is a need to provide a solution that allows a user to conveniently operate a door body of a cooking appliance.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides a ratchet assembly and a cooking appliance including the same, so as to solve the above technical problems.

The technical scheme of the utility model is as follows:

the utility model provides a ratchet assembly for swing joint cooking device's the door body and box, ratchet assembly includes mount, ratchet and gyro wheel, be equipped with first recess and first connecting arm on the ratchet, the movably setting of gyro wheel is in the mount, the ratchet is rotatably installed in the mount for when external force that acts on first connecting arm drives the ratchet and rotates to the primary importance, during the gyro wheel imbeds first recess.

According to a preferred embodiment of the present invention, the ratchet assembly further comprises a second groove, and the roller is inserted into the second groove when the ratchet is rotated to the second position by an external force applied to the first connecting arm.

According to a preferred embodiment of the utility model, the first position corresponds to an open position of the door and the second position corresponds to a closed position of the door.

According to a preferred embodiment of the present invention, a protrusion is provided between the first groove and the second groove, and concave surfaces of the first groove and the second groove are arc-shaped.

According to a preferred embodiment of the utility model, the ratchet further comprises a second connecting arm for triggering the microswitch when the ratchet is in the second position.

According to a preferred embodiment of the present invention, the ratchet assembly further comprises a yoke and a spring connected to the yoke, the roller being disposed at an end of the yoke, the spring applying an elastic force to the yoke when the yoke is mounted in the mount such that the roller abuts against the ratchet.

According to a preferred embodiment of the present invention, the fork is provided with a positioning pin, the fixing frame is provided with a sliding groove, and the positioning pin is slidably inserted into the sliding groove when the fork is mounted in the fixing frame.

According to a preferred embodiment of the present invention, the ratchet assembly further comprises a connecting member for connecting to a door body of the cooking appliance, and the first connecting arm is pivotally connected to the connecting member.

The cooking appliance comprises the ratchet wheel assembly, the fixing frame of the ratchet wheel assembly is fixedly installed in a box body of the cooking appliance, and the first connecting arm is connected with a door body of the cooking appliance through a connecting piece.

According to a preferred embodiment of the present invention, the cooking appliance is an electric oven or a microwave oven.

The ratchet wheel assembly of the utility model enables the ratchet wheel to be kept in a specific position when the roller is embedded into the groove through the matching of the groove on the ratchet wheel and the roller. The ratchet wheel assembly can be used for connecting a door body and a box body of a cooking appliance, so that the door body can be kept at a specific position such as an opening position or a closing position in the opening or closing process. Therefore, the user can take and put food with one hand, and the user experience of the cooking appliance is improved. In addition, the safety of the cooking appliance can be improved by keeping the door body at the closed position.

Drawings

Fig. 1 is a perspective view of a prior art cooking appliance;

fig. 2A is a partial schematic view of a cooking appliance according to an embodiment of the present invention;

FIG. 2B is a partial enlarged view of FIG. 2A;

FIG. 3 is a schematic view of a ratchet assembly according to an embodiment of the present invention;

FIG. 4A is a top view of a ratchet of the ratchet assembly according to an embodiment of the present invention;

FIG. 4B is a bottom view of the ratchet assembly according to an embodiment of the present invention;

FIG. 4C is a side view of a ratchet of the ratchet assembly according to an embodiment of the present invention;

FIG. 4D is a perspective view of a ratchet of the ratchet assembly according to an embodiment of the present invention;

FIG. 5 is a perspective view of a yoke of a ratchet assembly according to an embodiment of the present invention;

FIG. 6 is a perspective view of a mount for a ratchet assembly according to an embodiment of the present invention.

Description of reference numerals:

1-door body 2-hinge 3-box body 4-rotating shaft 5-ratchet wheel assembly 6-connecting piece 7-mounting plate 8-microswitch

9-ratchet 10-roller 11-shift fork 12-spring 13-fixing frame

91-first recess 92-second recess 93-projection 94-first connecting arm 941-connecting arm shaft hole

95-second connecting arm 96-ratchet shaft hole

111-positioning pin 112-shifting fork rod 113-roller mounting hole

131-sliding groove 131132-limiting hole 132133-ratchet wheel mounting hole

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments are described in detail below with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the utility model, its application, or uses. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the utility model to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not as limitative, unless specifically stated otherwise.

The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present invention, when it is described that a specific device is located between a first device and a second device, there may or may not be an intervening device between the specific device and the first device or the second device. When a particular device is described as being coupled to other devices, that particular device may be directly coupled to the other devices without intervening devices or may be directly coupled to the other devices with intervening devices.

All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

Fig. 1 is a perspective view of a prior art cooking appliance. As shown in fig. 1, a prior art cooking appliance (e.g., an oven or a microwave oven) includes a door 1 and a cabinet 3. The door body 1 and the cabinet 3 are connected together by a hinge 2 and a rotating shaft 4, so that the door body 1 can rotate between a closed position and an open position around the rotating shaft. In the open position, the user can put food to be cooked into the cooking chamber inside the cabinet 3 or take cooked food out of the cooking chamber. In the closed position, the door 1 closes the cooking chamber for the cooking operation. Since there is no specific hanging position in the rotation process of the door body 1, the user must hold the door body 1 at a specific position by hand in order to put food in or take food out of the cooking cavity, which brings inconvenience to the user.

The utility model provides a ratchet wheel assembly which is used for connecting a door body 1 and a box body 3 of a cooking appliance (such as a microwave oven or an oven) so that the door body 1 can be kept at a specific position (such as an opening position and/or a closing position) in the rotating process, and a user does not need to keep the position of the door body 1 by hands. Hereinafter, a ratchet assembly and a cooking appliance according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 2A is a partial schematic view of a cooking appliance according to an embodiment of the present invention. In fig. 2A, the door body 1 is in the closed position. As shown in part a of fig. 2A, the door 1 is connected to the cabinet 3 through the ratchet assembly 5. Fig. 2B is an enlarged view of a portion a in fig. 2A. As shown in fig. 2B, the ratchet assembly 5 is mounted on the cabinet 3 and is connected to the door body 1 by a connector 6. The ratchet assembly 5 is also connected with the microswitch 8, so that when the door body 1 rotates to a closed position, the ratchet assembly 5 triggers the microswitch. The microswitch 8 can be electrically connected with a control circuit of the cooking appliance, so that the cooking appliance can sense the opening and closing of the door body.

FIG. 3 is a schematic view of a ratchet assembly according to an embodiment of the present invention. As shown in fig. 3, the ratchet assembly 5 includes a fixed frame 13, and a ratchet 9, a roller 10, a yoke 11 and a spring 12 mounted in the fixed frame 13. The ratchet 9 is rotatably mounted in a holder 13. In the present embodiment, the ratchet 9 includes a ratchet shaft hole 96, so that the ratchet 9 can be mounted between two ratchet mounting holes 133 on the fixed frame 13 by a rotating shaft passing through the ratchet shaft hole 96. Alternatively, the upper and lower surfaces of the ratchet 9 may be symmetrically provided with two rotation shafts for fitting into the ratchet mounting holes 133 on the holder 13. The roller 10 is rotatably mounted at the end of the yoke 11 and can be moved by the yoke 11 in a direction away from the ratchet 9 and towards the ratchet 9. The fork 11 pushes the roller 10 against the side wall of the ratchet 9 under the thrust generated by the compression of the spring 12.

As shown in fig. 4A to 4D, a first groove 91 and a second groove 92 are provided on a side wall of the ratchet 9, and a protrusion 93 is provided between the first groove 91 and the second groove 92. The ratchet 9 further comprises first 94 and second 95 outwardly extending connecting arms. The first connecting arm 94 is connected to the door body 1 of the cooking appliance through the connecting piece 6, so that when the door body 1 is opened or closed, the door body 1 drives the ratchet wheel 9 to rotate through the connecting piece 6 and the first connecting arm 94. The first connecting arm 94 may be pivotally connected to the connecting member 6, and for this purpose, the first connecting arm 94 may be provided with a connecting arm shaft hole 941. When the door 1 is in the open position (for example, the door 1 is parallel to the side wall of the cabinet 3), the first groove 91 of the ratchet 9 rotates to a position opposite to the roller 10 (referred to as a first position), and the fork 11 pushes the roller 10 to be embedded into the first groove 91 under the action of the spring 12. At this time, the door body 1 is kept in the open position, and an external force enough to push the roller 10 out of the first groove 91 must be applied to the door body 1 to push the door body to rotate toward the closed position. When the door 1 is rotated to a closed position (for example, a position where the door 1 is perpendicular to the side wall of the cabinet 3), the second groove 92 of the ratchet 9 is rotated to a position opposite to the roller 10 (referred to as a second position), and the yoke 11 pushes the roller 10 to be embedded in the second groove 92 under the action of the spring 12. At this time, the door 1 is kept in the closed position, and an external force enough to push the roller 10 out of the second groove 92 must be applied to the door 1 to push the door to rotate toward the open position. In this embodiment, the presence of the projection 93 adds additional resistance to rotation of the ratchet 9 between the first and second positions. In fact, during the rotation of the ratchet 9 between the first position and the second position, the projection 93 must push the roller 10 to move away from the ratchet 9 in order to pass the position of the roller 10. Therefore, the pushing force required to rotate the door body 1 at the open position or the closed position can be changed by adjusting the height of the protrusion 93. In the present embodiment, the concave surfaces of the first and second grooves 91 and 92 may be arc-shaped and matched with the outer circumferential surface of the roller 10, so that the roller 10 may stably abut in the first and second grooves 91 and 92.

Fig. 5 and 6 show a yoke 11 and a mount 13, respectively, in a ratchet assembly 5 according to an embodiment of the present invention. As shown in fig. 5, the yoke 11 includes an upper end portion having a U-shape and an elongated-shaped yoke lever 112 extending downward from the upper end portion. The two roller mounting holes 113 are symmetrically formed at the U-shaped upper end of the yoke, and the roller 10 may be mounted to the upper end of the yoke 11 through a rotation shaft inserted into the roller mounting hole 113. Two positioning pins 111 are symmetrically arranged on two sides of the upper end of the shifting fork 11. When the fork 11 is mounted to the fixed frame 13, the two positioning pins 111 are respectively inserted into two sliding grooves 131 provided on the fixed frame 13, so that the fork 11 can slide in the fixed frame 13 along the sliding grooves 131. The fork rod 112 of the fork 11 is sleeved with the spring 12 and the end of the fork rod 112 is inserted into the limiting hole 132 provided on the fixing frame 13. Two ends of the spring 12 respectively abut against the upper end of the shifting fork 11 and the periphery of the limiting hole 132 on the fixed frame 13. In other words, the spring 12 is compressed between the upper end of the yoke 11 and the periphery of the stopper hole 132. Therefore, the yoke 11 is urged by the elastic force of the spring 12 to move away from the stopper hole 132. Since the ratchet 9 is installed in the fixed frame at the side opposite to the limiting hole 132 through the ratchet installation hole 133, the yoke 11 will move towards the ratchet 9 under the urging of the spring 12, so that the roller 10 installed at the upper end of the yoke 11 abuts against the side wall of the ratchet 9. During rotation of the ratchet 9, the roller 10, which abuts against the side wall of the ratchet 9, rotates under the effect of friction. When the first groove 91 (or the second groove 92) of the ratchet 9 rotates to the position of the roller 10, the roller 10 is inserted into the first groove 91 (or the second groove 92) under the pushing of the fork 11, and the rotation of the ratchet 9 stops (i.e. is kept in the position). In order to continue the rotation of the ratchet wheel 9, a larger driving force must be applied to the ratchet wheel 9 in order to push the roller 10 out of the first groove 91 (or the second groove 92).

The present invention also relates to a cooking appliance, such as a microwave oven or an oven, comprising the ratchet assembly 5 described above. The ratchet wheel component 5 is used for connecting the door body 1 and the box body 3 of the cooking appliance. According to an embodiment of the utility model, the holder 13 of the ratchet assembly 5 may be mounted on the mounting plate 7 in the cabinet 3 of the cooking appliance. The first connecting arm 94 of the ratchet assembly 5 is connected to the door body 1 of the cooking appliance through the connecting piece 6. Two ends of the connecting piece 6 can be respectively pivoted with the first connecting arm 94 of the ratchet wheel assembly 5 and the door body 1 of the cooking appliance, so that the ratchet wheel 9 is driven by the connecting arm 6 to rotate in the process of opening or closing the door body 1. When the door body 1 rotates to a preset opening position or closing position, the roller 10 is respectively embedded into the first groove 91 or the second groove 92 of the ratchet wheel 9 under the pushing of the shifting fork 11, so that the door body can be kept in the opening position or the closing position. Therefore, the user experience of opening and closing the door body of the cooking appliance can be improved by using the ratchet wheel assembly.

Thus, various embodiments of the present invention have been described in detail. Some details well known in the art have not been described in order to avoid obscuring the concepts of the present invention. From the above description, it will be fully apparent to those skilled in the art how the technical solutions of the present invention can be implemented.

Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for the purpose of illustration and is not intended to limit the scope of the utility model. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the utility model. The scope of the utility model is defined by the appended claims.

Claims (10)

1. The utility model provides a ratchet wheel subassembly for swing joint cooking device's door body (1) and box (3), its characterized in that, ratchet wheel subassembly includes mount (13), ratchet (9) and gyro wheel (10), be equipped with first recess (91) and first connecting arm (94) on ratchet (9), gyro wheel (10) movably sets up in mount (13), ratchet (9) are rotatably installed in mount (13) for when external force drive ratchet (9) that act on first connecting arm (94) rotate to first position, the gyro wheel imbeds in first recess (91).

2. The ratchet assembly of claim 1, further comprising a second recess (92), wherein the roller engages the second recess (92) when the ratchet (9) is rotated to the second position by an external force applied to the first link arm (94).

3. The ratchet assembly according to claim 2, wherein the first position corresponds to an open position of the door (1) and the second position corresponds to a closed position of the door (1).

4. The ratchet assembly of claim 2, wherein a protrusion (93) is disposed between the first recess (91) and the second recess (92), and the concave surfaces of the first recess (91) and the second recess (92) are arc-shaped.

5. A ratchet assembly according to claim 2, wherein the ratchet (9) further comprises a second connecting arm (95) for activating the microswitch (8) when the ratchet (9) is in the second position.

6. The ratchet assembly according to claim 1, further comprising a yoke (11) and a spring (12) connected to the yoke (11), wherein the roller (10) is disposed at an end of the yoke (11), and wherein the spring (12) applies a pushing force to the yoke (11) when the yoke (11) is mounted in the mount (13) so that the roller (10) abuts against the ratchet (9).

7. The ratchet assembly according to claim 6, wherein the yoke (11) is provided with a detent pin (111), the holder (13) is provided with a slide groove (131), and the detent pin (111) is slidably inserted into the slide groove (131) when the yoke (11) is mounted in the holder (13).

8. The ratchet assembly of claim 1, further comprising a connector (6) for connecting to a door of a cooking appliance, the first connecting arm (94) being pivotally connected to the connector (6).

9. An electric cooking appliance, characterized in that the electric cooking appliance comprises a ratchet assembly according to any one of the preceding claims, the holder (13) of the ratchet assembly is fixedly mounted in a cabinet (3) of the electric cooking appliance, and the first connecting arm (94) is connected with a door body (1) of the electric cooking appliance through a connecting piece (6).

10. The cooking appliance according to claim 9, wherein the cooking appliance is an electric oven or a microwave oven.

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