CN213510035U - Lock body and kitchen appliance - Google Patents

Abstract

The utility model discloses a lock body and kitchen appliance, wherein, the lock body includes: the rotary turning plate is rotationally connected to the electric appliance main body and provided with a turning plate contact surface, and the turning plate contact surface is a plane; the rotating lever is rotatably connected to the electric appliance main body and provided with a guide surface, the guide surface is provided with at least one section of arc section, the arc section faces the turning plate contact surface in a protruding mode, and the turning plate contact surface is in butt joint with the guide surface to rotate. The utility model discloses technical scheme has cancelled the rotatory condition that contacts with the plane of turning over board and rotatory lever to the smooth and easy nothing jamming of process of opening the door makes user's the dynamics of opening the door reduce.

Description

Lock body and kitchen appliance

Technical Field

The utility model relates to the technical field of household appliances, in particular to kitchen appliance of lock body and applied this lock body.

Background

When a user operates a plurality of household appliances, the user needs to open the door body of the household appliance for use or maintenance, and particularly for the kitchen appliances, the user needs to open the door body for cooking or cleaning food.

For example, there is a lock structure in the existing microwave oven, which includes a hook on the door body, a slot on the microwave oven body, and a lock on the microwave oven body, wherein the user presses a door opening button on the lock, the door opening button pushes a rotary turning plate to rotate, the rotary turning plate drives a rotary lever to rotate, so that the rotary lever jacks up the hook, the hook and the slot are separated from each other, and the door is opened. However, the contact surfaces of the existing rotating turning plate and the rotating lever are both of a planar structure, so that the rotating turning plate has the condition that the plane is in contact with the plane in the process of driving the rotating lever to rotate, the rolling resistance moment of the rotating turning plate and the rotating lever is increased in the rolling process due to the structure in which the plane is in contact with the plane, the phenomenon of door opening clamping stagnation is caused, and the acting force required by a user to open the door body is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a lock body, aims at the rotatory condition that contacts with the plane that turns over board and rotatory lever of cancellation messenger's lock body on to the process of opening the door smoothly does not have the jamming, makes user's the dynamics of opening the door reduce.

In order to achieve the above object, the utility model provides a lock body, lock body installs in the electrical apparatus main part, lock body includes:

the rotary turning plate is rotationally connected to the electric appliance main body and provided with a turning plate contact surface, and the turning plate contact surface is a plane; and

the rotating lever is rotatably connected to the electric appliance main body and provided with a guide surface, the guide surface is provided with at least one section of arc section, the arc section faces the turning plate contact surface in a protruding mode, and the turning plate contact surface is in butt connection with the guide surface to rotate.

Optionally, the region between the two ends of the guide surface is formed with a first arc segment.

Optionally, a plane section is further formed in a region between two ends of the guide surface, and the first circular arc section is connected with the plane section.

Optionally, the rotating turning plate and the rotating lever are defined to rotate relatively to each other to have a door opening direction, the door opening direction is a direction in which the guide surface and the turning plate contact surface sequentially contact each other in a door opening process, and the first arc section and the plane section are sequentially connected along the door opening direction.

Optionally, the rotation of the rotation turning plate and the rotation lever is defined to have a door opening direction, the door opening direction is a direction in which the guide surface and the turning plate contact surface sequentially contact each other in a door opening process, and the plane section and the first arc section are sequentially connected along the door opening direction.

Optionally, the radius of the first circular arc segment is R1, R1 is more than or equal to 4mm and less than or equal to 10 mm;

and/or the distance of the plane section is L1, and L1 is more than or equal to 1mm and less than or equal to 20 mm.

Optionally, a second arc segment is further formed in an area between two ends of the guide surface, and the first arc segment is connected with the second arc segment.

Optionally, the radius of the second circular arc segment is R2, and R2 is more than or equal to 4mm and less than or equal to 10 mm.

Optionally, one end of the guide surface is formed with a third arc segment, and the other end of the guide surface is formed with a fourth arc segment.

Optionally, the radius of the third circular arc segment is R3, and R3 is more than or equal to 0.5mm and less than or equal to 3 mm;

and/or the radius of the fourth arc section is R4, and R4 is more than or equal to 0.5mm and less than or equal to 3 mm.

The utility model also provides a kitchen appliance, the kitchen appliance comprises a door body and an appliance main body, the door body is hinged with one side of the appliance main body, the other side of the door body is provided with a clamping hook, and the other side of the appliance main body is provided with a clamping groove and the lock body;

the lock body includes: the rotary turning plate is rotationally connected to the electric appliance main body and provided with a turning plate contact surface, and the turning plate contact surface is a plane; and

the rotating lever is rotationally connected to the electric appliance main body and provided with a guide surface, the guide surface is provided with at least one section of arc section, the arc section is convexly arranged towards the turning plate contact surface, and the turning plate contact surface is abutted to the guide surface for rotation;

the clamping hook can be correspondingly clamped in the clamping groove, and the rotating lever on the lock body can push the clamping hook in the rotating process so as to separate the clamping hook from the clamping groove.

The utility model discloses rotation flap plate in technical scheme's lock body moves rotatory lever and rotates, and this in-process is rotatory to be turned over the guide surface that turns over on the board contact plane and the rotatory lever and carry out rolling friction. Through set up one section at least circular arc section on the spigot surface at rotatory lever, make to turn over board contact surface and spigot surface and remain the state that plane and circular arc surface contacted throughout, both carry out the resistance moment reduction of rolling friction in-process, rotatory board of turning over is changeed and is promoted rotatory lever and rotate to make the user promote rotatory board of turning over and carry out pivoted effort and reduce. The acting force required by a user to open the door body in the use process of the kitchen appliance with the lock body is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a kitchen appliance according to the present invention;

FIG. 2 is a schematic structural view of the control box and the bracket of FIG. 1;

FIG. 3 is a schematic structural view of the control box, the bracket and the lock body of FIG. 2 without the rotating flap;

FIG. 4 is a schematic diagram of the control box, the bracket and the lock body of FIG. 3 with the rotary flap mounted thereon;

FIG. 5 is a schematic structural view of the bracket and lock body of FIG. 4;

FIG. 6 is a schematic structural view of the lock body of FIG. 5;

FIG. 7 is a schematic view of the latch of FIG. 6 from another perspective;

FIG. 8 is a schematic view of the structure of the rotating lever of FIG. 7;

fig. 9 is a schematic structural view of a rotating lever according to another embodiment of the lock body of the present invention;

fig. 10 is a schematic structural view of a rotating lever according to another embodiment of the lock body of the present invention;

fig. 11 is a schematic structural view of a rotating lever according to another embodiment of the lock body of the present invention.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 5, the present invention provides a lock body 50, and the lock body 50 is applied to a household appliance, and specifically, the household appliance may be one of the kitchen appliances 100, for example: microwave ovens, disinfection cabinets, and the like. The lock 50 is not limited to the kitchen appliance 100, but can be applied to any household appliance requiring an opening/closing motion.

The household appliance using the lock body 50 includes a door body 10 and an appliance body 30, one side of the door body 10 is connected with the appliance body 30 through a hinge structure, so that the door body 10 can rotate relative to the appliance body 30 to open and close, a hook (not shown) is arranged on the other side of the door body 10, a clamping groove 3111 (combined with fig. 2) is arranged at a position of the appliance body 30 corresponding to the hook, the hook can be correspondingly inserted into the clamping groove 3111 and clamped with the clamping groove 3111, so that the door body 10 and the appliance body 30 keep a locked state. Referring to fig. 3 and 4, the electrical appliance main body 30 is provided with a control box 31, the lock body 50 is disposed in the control box 31, and the door opening button 51 of the lock body 50 is exposed from the opening of the control box 31. In the process of opening the door 10, the user can push the door opening button 51 from the opening, and the door opening button 51 drives the internal structure of the lock body 50 to link, so as to jack up the part of the hook extending into the slot 3111, thereby separating the hook from the slot 3111 and enabling the door 10 and the electric appliance main body 30 to have an unlocking state.

With reference to fig. 5 and fig. 6, the lock body 50 according to the present invention includes: the turning plate 53 is connected to the electric appliance body 30 in a rotating mode, and with the aid of the drawing in fig. 7 and 8, the turning plate 53 is provided with a turning plate contact surface 531, and the turning plate contact surface 531 is a plane; the rotating lever 55 is rotatably connected to the electrical appliance main body 30, the rotating lever 55 is provided with a guide surface 551, the guide surface 551 is provided with at least one arc section 5511, the arc section 5511 is convexly arranged towards the turning plate contact surface 531, and the turning plate contact surface 531 is in contact rotation with the guide surface 551.

During the rotation process of the rotating turning plate 53 relative to the electric appliance main body 30, the turning plate contact surface 531 on the rotating turning plate 53 abuts against the guide surface 551 on the rotating lever 55 and pushes the rotating lever 55 to rotate, and the hook on the door body 10 can be pushed in the rotation process of the rotating lever 55, so that the hook on the door body 10 is separated from the slot 3111 on the electric appliance main body 30. The utility model discloses technical scheme's spigot surface 551 on rotatory lever 55 has one section at least circular arc section 5511, this circular arc section 5511 set up make the rotation turn over board 53 drive rotatory lever 55 pivoted in-process, the rotation turns over on the board 53 and turns over the contact of board contact surface 531 and the spigot surface 551 on the rotatory lever 55 and remain plane and circular arc surface throughout, both carry out the resistance moment of rolling friction in-process and reduce, the rotation turns over board 53 and changes to promote rotatory lever 55 and rotate, thereby it carries out the pivoted effort and reduces to make the user promote the rotation to turn over board 53. In the kitchen appliance 100 with the lock body 50, the acting force required by a user to open the door body 10 is small during the use process.

The embodiment of the utility model provides an in, user operation promotes the one end that opens door button 51 appears in control box 31, makes the other end of opening door button 51 promote rotatory board 53 that turns over rotate. The rolling friction resistance moment between the rotating turning plate 53 and the rotating lever 55 is reduced, so that the force for the user to push the door opening key 51 is reduced, and the door 10 can be unlocked and opened more easily.

As shown in fig. 3 to 5, the appliance main body 30 may be provided with a bracket 311, the bracket 311 is connected to the housing of the appliance main body 30 or directly connected to the control box 31, and the rotating flap 53 and the rotating lever 55 are both rotatably connected to the bracket 311, so that the lock body 50 has a more compact structure and the rotating effect of the rotating flap 53 and the rotating lever 55 is more stable. The slot 3111 may also be provided on the bracket 311.

Referring to fig. 8, a first arc section 5511a is formed in an area between two ends of the guide surface 551 on the rotating lever 55, and the first arc section 5511a protruding toward the flap contact surface 531 makes the guide surface 551 and the flap contact surface 531 keep an arc and a plane to contact and roll, so that a clamping stagnation phenomenon caused by direct contact between the flap contact surface 531 and the plane is avoided, and the rotating flap 53 drives the rotating lever 55 to rotate more smoothly.

In this embodiment, the radius of the first arc section 5511a is R1, R1 is greater than or equal to 4mm and less than or equal to 10 mm; the radius R1 of the first arc segment 5511a may be specifically 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm, and may be any value between the above-listed values. In the size range, the rotating turning plate 53 pushes the rotating lever 55 to move more smoothly, and the rotating turning plate 53 with a smaller rotation angle can ensure that the rotating lever 55 jacks up the hook on the door body 10 to complete the unlocking action.

Further, in this embodiment, one end of the guide surface 551 is formed with a third arc segment 5511c, and the other end of the guide surface 551 is formed with a fourth arc segment 5511 d.

The radii of the third arc section 5511c and the fourth arc section 5511d may be the same or different, in this embodiment, the guide surface 551 is transited from the third arc section 5511c to the first arc section 5511a, and then transited to the fourth arc section 5511d, so that in the process of rotating and unlocking the flap contact surface 531 of the rotating flap 53 and the guide surface 551, the flap contact surface 531 sequentially contacts the third arc section 5511c, the first arc section 5511a and the fourth arc section 5511d, in the whole contact process, the rotating flap 53 and the rotating lever 55 rotate smoothly, the thrust for pushing the rotating flap 53 to rotate is uniform, and the user pushes the door opening key 51 to open the door smoothly and unimpededly.

The radius of the third arc section 5511c is R3, R3 is greater than or equal to 0.5mm and less than or equal to 3mm, and the radius of the third arc section 5511c may be specifically 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm or 3mm, or may be a value between any two of the foregoing values. Within this size range, the transition from the third arc segment 5511c to the first arc segment 5511a is smooth.

And/or the radius of the fourth arc section 5511d is R4, R4 is more than or equal to 0.5mm and less than or equal to 3 mm. The radius of the fourth arc segment 5511d may be 0.5mm, 1mm, 1.5mm, 2mm, 2.5mm, or 3mm, or a value between any two of the foregoing. Within this size range, the first arc segment 5511a to the fourth arc segment 5511d transition smoothly.

The guide surface 551 of the rotation lever 55 may also be replaced by: referring to fig. 9 and 10, the area between both ends of the guide surface 551 is further formed with a plane section 5513 in the case of forming a first circular arc section 5511a, and the first circular arc section 5511a is connected with the plane section 5513. The flat section 5513 is provided so that the size of the rotating lever 55 is smaller than that of the rotating lever 55 in the above embodiment.

Referring to fig. 9, it is defined that the rotating flap 53 and the rotating lever 55 rotate relatively to each other to have a door opening direction, the door opening direction is a direction in which the guide surface 551 and the flap contact surface 531 sequentially contact each other during door opening, and the first arc section 5511a and the plane section 5513 are sequentially connected along the door opening direction. In this embodiment, during unlocking of the door, the rotating flap 53 contacts one end of the guide surface 551, contacts the first arc segment 5511a, and then contacts the other end of the guide surface 551 across the planar segment 5513. When the door is opened and unlocked, the same acting force is adopted to push the rotating turning plate 53 to rotate, the rotation transmission between the rotating turning plate 53 and the rotating lever 55 is slow firstly and then fast, and the clockwise pushing speed can be accelerated when the door passes over the plane section 5513.

Referring to fig. 10, the plane section 5513 and the first arc section 5511a are sequentially connected in the door opening direction as defined above. In this embodiment, during unlocking of the door, the rotating flap 53 contacts one end of the guide surface 551, then contacts the first arc section 5511a beyond the flat section 5513, and then contacts the other end of the guide surface 551. When the door is opened and unlocked, the same acting force is adopted to push the rotating turning plate 53 to rotate, the rotation transmission between the rotating turning plate 53 and the rotating lever 55 is fast and slow, and the clockwise pushing speed is accelerated when the door passes over the plane section 5513.

In the above two embodiments, the radius of the first arc section 5511a is R1, R1 is greater than or equal to 4mm and less than or equal to 10 mm; the radius R1 of the first arc segment 5511a may be specifically 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm, and may be any value between the above-listed values. Within the size range, the turning plate contact surface 531 moves more smoothly along the first arc section 5511a in the rolling process, and the rotating lever 55 can be ensured to jack up the hook on the door body 10 under the condition that the rotating angle of the rotating turning plate 53 is smaller, so that the unlocking action is completed. And/or the distance of the plane section 5513 is L1, L1 is more than or equal to 1mm and less than or equal to 20mm, the distance L1 of the plane section 5513 can be 1mm, 5mm, 10mm, 15mm or 20mm, and can also be any value between the above listed values. Within the range, the rotating turning plate 53 can more rapidly rotate the rotating lever 55 to a designated position when being rotated by an acting force of the same magnitude, so as to push the hook on the door 10 to an unlocking state.

In the above two embodiments, a third arc segment 5511c and a fourth arc segment 5511d may be respectively disposed at two ends of the guide surface 551, and values of the third arc segment 5511c and the fourth arc segment 5511d are referred to the above embodiments. Due to the arrangement of the third arc section 5511c and the fourth arc section 5511d, the rotation turning plate 53 and the rotation lever 55 move more smoothly, so that the acting force for pushing the rotation turning plate 53 to rotate is smaller, and the reaction force applied to the rotation turning plate 53 is more stable.

Referring to fig. 11, a second arc section 5511b is further formed in an area between both ends of the guide surface 551, and the first arc section 5511a and the second arc section 5511b are connected. In this embodiment, the guide surface 551 is formed of two circular arc segments 5511 between its ends. The two arc sections 5511 may have the same or different radiuses, and the two arc sections 5511 may be in smooth transition connection or non-smooth transition connection, and because the protruding degree of the portion where the first arc section 5511a and the second arc section 5511b are connected is lower, when the first arc section 5511a and the second arc section 5511b are arranged along the door opening direction, in the door opening unlocking process, the turning plate contact surface 531 abuts against the first arc section 5511a first, and passes over the portion where the first arc section 5511a and the second arc section 5511b are connected, and then abuts against the second arc section 5511 b. Because the part that first circular arc section 5511a is connected with second circular arc section 5511b is shorter, turn over the position distance that board contact surface 531 surpassed first circular arc section 5511a and second circular arc section 5511b and is connected is shorter, can not cause great speed variation for the unlocking process is smooth-going, reliable to open the door.

In this embodiment, the radius of the first circular arc segment 5511a may refer to the vertical range given in the above embodiments. The radius of the second arc section 5511b is R2, R2 is more than or equal to 4mm and less than or equal to 10 mm. Specifically, the radius R2 of the second arc segment 5511b can be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm, and can be any value between the above-listed values. Within the size range, the turning plate contact surface 531 moves more smoothly along the second arc section 5511b in the rolling process, and the rotating lever 55 can be ensured to jack up the hook on the door body 10 under the condition that the rotating angle of the rotating turning plate 53 is smaller, so that the unlocking action is completed.

In the above embodiment, the guide surface 551 may also have both ends formed with the third arc segment 5511c and the fourth arc segment 5511d, respectively. The values of the third arc segment 5511c and the fourth arc segment 5511d are as in the above embodiments. Due to the arrangement of the third arc section 5511c and the fourth arc section 5511d, the rotation turning plate 53 and the rotation lever 55 move more smoothly, so that the acting force for pushing the rotation turning plate 53 to rotate is smaller, and the reaction force applied to the rotation turning plate 53 is more stable.

The utility model discloses technical scheme's above-mentioned embodiment, turn over traditional structural improvement that board contact surface 531 and rotatory lever 55's plane and plane contacted for the structure that plane and cambered surface contacted for the rotation turns over board 53 and promotes rotatory lever 55 and rotate the in-process and move more steadily. The convex arc section 5511 of board contact surface 531 is turned over towards sending on the rotatory lever 55 for turn over board contact surface 531 butt arc section 5511 and rotate the in-process, the rotatory board 53 that turns over rotates the same angle, and rotatory lever 55 pivoted angle is bigger than the rotatory lever 55 rotation degree of traditional structure, thereby makes the user promote the stroke of opening the door button 51 and shortens, reaches the effect of changing the door.

It can be understood that, in order to more firmly lock the door 10 and the electrical appliance main body 30, two or more hooks may be disposed on the door 10, and correspondingly, the electrical appliance main body 30 may be disposed with slots 3111 having the same number as the hooks, and one slot 3111 corresponds to one hook, the door 10 is further disposed with a connecting portion, the hooks are all connected to the connecting portion, the rotating lever 55 on the lock 50 pushes one hook, and the connecting portion drives the hooks to be separated from the corresponding slots 3111. The connecting portion can also set up the elastic component, and connecting portion and door body 10 are connected to this elastic component, and under the state that the trip was held with draw-in groove 3111 mutually, the elastic component made the trip keep with the state of holding of draw-in groove 3111, prevent that trip and draw-in groove 3111 from separating under the non-exogenic action. In the process that the user pushes the door body 10 and the electrical appliance body 30 to be locked again, the hook is pushed by the electrical appliance body 30 to enable the elastic part to deform elastically, so that the hook falls into the corresponding slot 3111 again, and a unsmooth hand feeling can be formed in the process, so that the door body 10 and the electrical appliance body 30 are confirmed to be locked by sensing.

The utility model discloses still provide a kitchen appliance 100, this kitchen appliance 100 is including the door body 10, electrical apparatus main part 30 and lock body 50, and above-mentioned embodiment is referred to this lock body 50's concrete structure, because this kitchen appliance 100 has adopted the whole technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is not repeated here one by one. Wherein, one side of the door 10 and the electric appliance body 30 is hinged, the other side of the door 10 is provided with a hook, the other side of the electric appliance body 30 is provided with a slot 3111 and a lock body 50, the hook can be correspondingly clamped in the slot 3111, and the rotating lever 55 on the lock body 50 can push the hook in the rotating process to separate the hook from the slot 3111.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (11)

1. The utility model provides a lock body, lock body installs in the electrical apparatus main part, its characterized in that, lock body includes:

the rotary turning plate is rotationally connected to the electric appliance main body and provided with a turning plate contact surface, and the turning plate contact surface is a plane; and

the rotating lever is rotatably connected to the electric appliance main body and provided with a guide surface, the guide surface is provided with at least one section of arc section, the arc section faces the turning plate contact surface in a protruding mode, and the turning plate contact surface is in butt connection with the guide surface to rotate.

2. A lock body according to claim 1, characterized in that the area between the two ends of the guiding surface is formed with a first circular arc section.

3. A lock body according to claim 2, characterized in that the area between the two ends of the guiding surface is further formed with a planar section, the first circular arc section and the planar section being connected.

4. The lock of claim 3, wherein said rotary flap and said rotary lever are defined to rotate relative to each other to have a door opening direction, said door opening direction is a direction in which said guide surface and said flap contact surface sequentially contact each other during door opening, and said first arc section and said planar section are sequentially connected along said door opening direction.

5. The lock of claim 3, wherein said rotary flap and said rotary lever are defined to rotate relative to each other to have a door opening direction, said door opening direction is a direction in which said guide surface and said flap contact surface sequentially contact each other during door opening, and said planar section and said first arc section are sequentially connected along said door opening direction.

6. A lock body according to claim 4 or 5, characterized in that the radius of the first circular arc section is R1, R1 ≦ 10mm 4mm ≦ R1 ≦ 10 mm;

and/or the distance of the plane section is L1, and L1 is more than or equal to 1mm and less than or equal to 20 mm.

7. A lock body according to claim 2, characterized in that a second circular arc segment is formed in the area between the two ends of the guiding surface, said first circular arc segment and said second circular arc segment being connected.

8. A lock body according to claim 7, characterized in that the radius of the second circular arc section is R2, R2 ≦ 10mm 4 mm.

9. A lock body according to any one of claims 2, 3, 4, 5, 7 or 8, characterized in that one end of the guide surface is formed with a third circular arc segment and the other end of the guide surface is formed with a fourth circular arc segment.

10. A lock body according to claim 9, characterized in that the third circular arc section has a radius R3, 0.5mm R3 mm 3 mm;

and/or the radius of the fourth arc section is R4, and R4 is more than or equal to 0.5mm and less than or equal to 3 mm.

11. The kitchen appliance is characterized by comprising a door body and an appliance main body, wherein the door body is hinged with one side of the appliance main body, a clamping hook is arranged on the other side of the door body, a clamping groove and a lock body are arranged on the other side of the appliance main body, the lock body is the lock body according to any one of claims 1 to 10, the clamping hook can be correspondingly clamped in the clamping groove, and the rotating lever on the lock body can push the clamping hook in the rotating process so as to separate the clamping hook from the clamping groove.

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