LOCKING DEVICE AND CAKE PAN

Abstract

This application relates to a locking device with a first and a second connecting element, and a first and a second locking element. A first end portion of the first connecting element clamps an upper end of an annular body. A third end portion of the second connecting element clamps a lower end of the annular body. A fifth end portion of the first locking element is connected to a fourth end portion of the second connecting element, and the fifth end portion is connected to a second end portion of the first connecting element. The fifth end portion pivots about an axis of rotation relative to the fourth end portion. A sixth end portion of the first locking element has a first locking portion. The second locking element has a second locking portion. Figure to be published with the abbreviation: Fig. 2.

Description

Title of the invention: LOCKING DEVICE AND CAKE MOLD

[0001] Technical Domain This application relates to the technical field of cake molds, and more specifically to a locking device and a cake mold.

[0002] Prior art Cake molds are used to shape cakes during the cake-making process. Cake molds consist of ring-shaped bodies formed by winding long strips of steel. The diameters of the ring bodies are changed by altering the overlapping or superposition of the head and tail ends of the steel strips, allowing for cakes of various sizes. Modern cake molds use press pieces arranged on the steel strips to firmly press the overlapping sections of the strips together, preventing them from slipping. However, the tight pressing design using these press pieces can easily lead to displacement or separation during baking, further affecting the appearance of the cakes.

[0003] Summary Given the problems that exist in the prior art, the present application aims to provide a locking device and a cake mold to overcome the above problems or at least partially resolve them.

[0004] According to a first aspect of the present application, a locking device is provided, comprising a first connecting element, a second connecting element, a first locking element, and a second locking element. The first connecting element comprises a first end portion and a second end portion arranged oppositely, and the first end portion is used to clamp an upper end of an annular body. The second connecting element comprises a third end portion and a fourth end portion arranged oppositely, and the third end portion is used to clamp a lower end of the annular body.The first locking element comprises a fifth end part and a sixth end part which are arranged oppositely, the fifth end part is rotatably connected to the fourth end part, the fifth end part is rotatably connected. At the second end part, the fifth end part can rotate about an axis of rotation relative to the fourth end part, and the sixth end part is provided with a first locking part. The second locking element is fixed to the second connecting element, and the second locking element is provided with a second locking part in which, when the fifth end part rotates to a first position relative to the fourth end part, the first locking part and the second locking part are locked, and the fifth end part applies a tensile force to the second and fourth end parts, respectively, to cause the first end part to approach the third end part.

[0005] In one or more of the optional implementations of the foregoing, the first locking part includes a slotted part, the second locking part includes a clip, when the fifth end part rotates to the first position relative to the fourth end part, the sixth end part covers the second locking element and the clip is associated by snap-fit ​​to the slotted part along a direction in which the sixth end part covers the second locking element.

[0006] In one or more of the optional embodiments of the foregoing, the second locking element is provided with an elastic element, the second locking part comprises connecting arms, each of the connecting arms comprises a seventh end part and an eighth end part which are arranged oppositely, the seventh end part being rotatably connected to the second locking element, the clip being disposed on the eighth end part and the eighth end part being connected to the elastic element, wherein the eighth end part can move back and forth between a locked position and an unlocked position under the drive of the seventh end part, the clip being mounted by snap-fitting with the slotted part when the eighth end part is in the locked position,The clip is separated from the slotted portion when the eighth end part is in the unlocked position, and the elastic element is used to generate an elastic action that resists movement of the eighth end part from the locked position to the unlocked position.

[0007] In one or more of the optional embodiments of the foregoing, the second locking element is provided with an elastic element, the second locking part comprises connecting arms, each of the connecting arms comprising a seventh end part and an eighth end part which are arranged oppositely, the seventh end part being fixed to the second locking element, and the eighth end part is connected to the elastic element, in which the eighth end part can be elastically bent relative to the seventh end part to make a round trip between a locked position and an unlocked position, the clip being adjusted by snapping to the slotted part when the eighth end part is in the locked position, the clip being separated from the slotted part when the eighth end part is in the unlocked position, and the elastic element is used to generate an elastic action that resists movement of the eighth end part from the locked position to the unlocked position.

[0008] In one or more of the optional embodiments of the foregoing, the slot portion comprises a first slot portion and a second slot portion which are arranged oppositely, the number of connecting arms is two, the clip comprising a first clip and a second clip, the two connecting arms being arranged oppositely, the first clip and the second clip being arranged on the two end eighth portions, respectively, the elastic element comprises a ninth end portion and a tenth end portion which are arranged oppositely, the ninth end portion being connected to one of the end eighth portions, the tenth end portion being connected to the other of the end eighth portions, and when the fifth end portion rotates to the first position relative to the fourth end portion, the first clip is engaged with the first slot portion,and the second clip is engaged with the second part of the slot.

[0009] In one or more of the optional embodiments of the foregoing, the second locking element is provided with a receiving groove, a side wall of the receiving groove is provided with a first opening and a second opening which are arranged oppositely, the elastic element and the second locking part being both arranged in the receiving groove, the first clip passing through the first opening, and the second clip passing through the second opening, the eighth end parts being provided with pressure parts, the pressure parts of the eighth end being provided with pressing parts, the pressing parts of the two eighth end parts being arranged back to back along a direction from the ninth end part to the tenth end part, one of the pressing parts protruding from the second locking element through the first opening,and the other pressing parts protruding from the second locking element through the second opening.

[0010] In one or more of the optional embodiments of the foregoing, the second locking element is provided with a receiving groove, the elastic element and the second locking part both being disposed in the the receiving groove, the second locking element also being provided with a first limiting hole and a second limiting hole which are arranged oppositely along a direction from the ninth end part to the tenth end part, the first clip passing through the first limiting hole and the second clip passing through the second limiting hole, the eighth end parts being provided with pressing parts, the pressing parts of the two eighth end parts being arranged back to back along a direction from the ninth end part to the tenth end part, the second locking element also being provided with a third limiting hole and a fourth limiting hole which are arranged oppositely along the direction from the ninth end part to the tenth end part,One of the pressing parts passes through the third limiting hole, and the other of the pressing parts passes through the fourth limiting hole.

[0011] In one or more of the optional implementations of the foregoing, the first end part comprises a first pressing piece, a first connecting part and a second pressing piece, the first pressing piece and the second pressing piece being arranged oppositely, the first connecting part connecting the first pressing piece to the second pressing piece, and a first clamping groove used to clamp the upper end of the annular body being formed between the first pressing piece and the second pressing piece;and / or the third end part comprises a third pressing piece, a second connecting part and a fourth pressing piece, the third pressing piece and the fourth pressing piece being arranged oppositely, the second connecting part linking the third pressing piece to the fourth pressing piece, and a second clamping groove used to clamp the lower end of the annular body being formed between the third pressing piece and the fourth pressing piece;and / or the fifth end part being provided with a first connection hole and a second connection hole, an axis of the first connection hole being parallel to an axis of the second connection hole, the second end part being provided with a third connection hole, the fourth end part being provided with a fourth connection hole, the first connection hole being aligned with the third connection hole in an axial direction of the first connection hole, the second connection hole being aligned with the fourth connection hole, the locking device comprising a first connection shaft and a second connection shaft, the first connection shaft passing through the first hole of; connection and the third connection hole, and the second connection tree passing through the second connection hole and the fourth connection hole.

[0012] According to a second aspect of the present application, a cake mold is supplied, comprising an annular body and the locking device described above.

[0013] In one or more of the optional implementations of the foregoing, the fourth end portion is fixed to an outer peripheral wall of the annular body; and / or the cake mold includes a limiting ring, and the limiting ring is sleeved onto a covered portion of the annular body.

[0014] The beneficial effects of the embodiments of the present application are as follows: According to the locking device proposed by the embodiments of the present application, the fifth end portion rotates relative to the fourth end portion to cause the first end portion to move closer to the third end portion, so that the first and third end portions are fixed to the covered portion of the annular body. Furthermore, the first locking portion is locked onto the second locking portion when the fifth end portion rotates to the first position, thereby locking the fifth end portion in the first position.Compared to traditional cake molds that only use a tight pressure approach on the annular body by pressing pieces, the locking device provided by the embodiments of this application is more reliable and reduces the occurrence of a problem of annular body separation during baking.

[0015] BRIEF DESCRIPTION OF THE DRAWINGS To illustrate more clearly the specific embodiments of this application or the prior art technical solutions, the drawings to be used in the descriptions of the specific embodiments or prior art are briefly presented below. Throughout the drawings, similar elements or parts are generally identified by similar reference numbers. The elements or parts are not necessarily drawn to scale in the drawings.

[0016] [Fig-1] is a stereoscopic diagram of a cake mold provided by an embodiment of the present application;

[0017] [Fig.2] is an exploded view of a locking device provided by an embodiment of the present application;

[0018] [Fig.3] is a cross-sectional view of a cake mold provided by an embodiment of the present application;

[0019] [Fig.4] is a schematic diagram of a first locking element of a locking device provided by an embodiment of the present application;

[0020] [Fig.5] is a schematic diagram of a first locking part of a locking device provided by an embodiment of the present application;

[0021] [Fig.6] is a schematic diagram of a second locking element of a locking device provided by an embodiment of the present application;

[0022] [Fig.7] is a partial principle diagram of the locking between a first locking part and a second locking part of a locking device provided by an embodiment of the present application;

[0023] [Fig.8] is a partial exploded view of a locking device provided by an embodiment of the present application;

[0024] [Fig.9] is a diagram of a second locking element of a locking device provided by an embodiment of the present application;

[0025] [Fig. 10] is a schematic diagram of a first connection element of a locking device provided by an embodiment of the present application;

[0026] [Fig. 11] is a schematic diagram of a second connection element of a locking device provided by an embodiment of the present application;

[0027] DETAILED DESCRIPTION To facilitate understanding of this application, it is described in more detail below with reference to the specific drawings and embodiments. It should be noted that when an element is considered to be "attached" to another element, the element may be directly on top of the other element, or one or more intermediate elements may exist between them. When an element is considered to be "connected" to another element, the element may be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "vertical," "horizontal," "left," "right," "inside," "outside," and similar expressions used in the specification are provided for descriptive purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification have the same meaning as those generally understood by a person skilled in the art relevant to this application. The terms used in the specification of this application are intended to describe only the specific embodiments and are not intended to limit this application. The term "and / or" used in the specification includes all combinations of one or more associated listed articles.

[0029] In the specification description, unless expressly stated otherwise or limited, the terms "link," "connect," and "fix" shall be understood in a broad sense; for example, they may be a fixed connection, a detachable connection, or an integration; they may be a mechanical connection or an electrical connection; and they may be a direct link or an indirect link via a intermediary; or internal communication between two elements or interaction between two elements. Those with a moderate level of expertise may understand the specific meanings of the above terms in this disclosure based on specific situations.

[0030] Furthermore, the technical features described below in different embodiments of this application may be combined provided that they do not conflict with each other.

[0031] Referring to Figures 1 to 5, a locking device 100 comprises a first connecting element 1, a second connecting element 2, a first locking element 3, and a second locking element 4. The first connecting element 1 comprises a first end portion 11 and a second end portion 12 arranged oppositely, and the first end portion 11 is used to clamp an upper end of an annular body 200. The second connecting element 2 comprises a third end portion 21 and a fourth end portion 22 arranged oppositely, and the third end portion 21 is used to clamp a lower end of the annular body 200. The first locking element 3 comprises a fifth end portion 31 and a sixth end portion 32 arranged oppositely.The fifth end part 31 is rotatably connected to the fourth end part 22, and the fifth end part 31 is connected to the second end part 12. The fifth end part 31 can pivot about an axis of rotation z relative to the fourth end part 22, causing the assembly including the second end part 12 and the fifth end part 31 to rotate about the axis of rotation z. The sixth end part 32 is provided with a first locking part 321.The second locking element 4 is fixed to the second connecting element 2, and the second locking element 4 is provided with a second locking part 4L. When the fifth end part 31 rotates to a first position relative to the fourth end part 22, the first locking part 321 and the second locking part 41 are locked, and the fifth end part 31 applies a pulling force to the second end part 12 and the fourth end part 22, respectively, to cause the first end part 11 to approach the third end part 21.

[0032] When the locking device 100 is used in a cake mold 1000, the first end portion 11 is fixed to an upper end of an overlapping portion 203 of the annular body 200, and the third end portion 21 is fixed to a lower end of the portion 203 of the annular body 200. When the fifth end portion 31 rotates towards the first position relative to the fourth part From end 22, the fifth end part 31 applies the tensile force to the second end part 12 and the fourth end part 22, respectively, to drive the first end part 11 towards the third end part 21, thus fixing the overlapping part 203 of the annular body 200 through the first end part 11 and the third end part 21, to maintain the diameter of the annular body 200. The first locking part 321 and the second locking part 41 are locked, to fix the sixth end part 32 to the second locking element 4.

[0033] According to the locking device 100 provided by the embodiments of the present application, the fifth end part 31 rotates relative to the fourth end part 22 to cause the first end part 11 to approach the third end part 21, so that the first end part 11 and the third end part 21 are fixed to the covered part 203 of the annular body 200. In addition, the first locking part 321 is locked onto the second locking part 41 when the fifth end part 31 rotates to the first position, to lock the fifth end part 31 in the first position.Compared to traditional cake molds which only use a tight pressing approach of the annular body by pressing the pieces, the locking device 100 provided by the embodiments of this application is more reliable and reduces the occurrence of a problem of separation of the annular body 200 during baking.

[0034] In some embodiments, the first locking portion 321 comprises a slotted portion, and the second locking portion 41 comprises a clip. The clip is engaged on the slotted portion when the fifth end portion 31 rotates to the first position relative to the fourth end portion 22.

[0035] In some embodiments, the sixth end part 32 is covered over the second locking element 4 when the fifth end part 31 rotates towards the first position relative to the fourth end part 22, and the clip is adjusted by snapping onto the slotted part along a direction in which the first locking element 3 covers the second locking element 4.

[0036] In certain embodiments, the second locking element 4 is provided with an elastic element 5, and the second locking part 41 comprises connecting arms 412. Each of the connecting arms 412 comprises a seventh end part 4121 and an eighth end part 4122 which are arranged in opposite directions. The seventh end part 4121 is rotatably connected to the second locking element 4, the clip is disposed on the eighth end part 4122, and the eighth end part 4122 is connected to the element Elastic element 5. The eighth end part 4122 can move back and forth between a locked and an unlocked position under the drive of the seventh end part 4121. The clip is engaged on the slotted portion when the eighth end part 4122 is in the locked position. The clip is disengaged from the slotted portion when the eighth end part 4122 is in the unlocked position. The elastic element 5 is used to generate an elastic action that resists movement of the eighth end part 4122 from the locked position to the unlocked position.

[0037] Referring to Figures 5 and 6, in certain embodiments, the seventh end part 4121 is provided with a mounting hole 4121a, and the second locking element 4 is provided with a mounting projection 43. The mounting projection 43 is inserted into the mounting hole 4121a, and the seventh end part 4121 can pivot around the mounting projection 43 through the mounting hole 4121a.

[0038] In some embodiments, each of the connecting arms 412 includes a connecting part connected between the seventh end part 4121 and the eighth end part 4122. The connecting part generally has the form of a long rod, and the connecting part extends along a direction from the seventh end part 4121 to the eighth end part 4122.

[0039] Referring to Figures 7 and 8, in other embodiments, the second locking element 4 is provided with an elastic element 5, and the second locking portion 41 comprises connecting arms 412. Each connecting arm 412 comprises a seventh end portion 4121 and an eighth end portion 4122 arranged in opposite directions. The seventh end portion 4121 is fixed to the second locking element 4, and the eighth end portion 4122 is connected to the elastic element 5. The eighth end portion 4122 can be elastically bent relative to the seventh end portion 4121 to differentiate between a locked and an unlocked position. The clip is engaged on the slotted portion when the eighth end portion 4122 is in the locked position. The clip is separated from the slotted part when the eighth end part 4122 is in the unlocked position.The elastic element 5 is used to generate an elastic action that resists a movement of the eighth end part 4122 from the locked position to the unlocked position.

[0040] It can be understood that the seventh end part 4121 can be fixed to the second locking element 4 by welding, fixing with a fastener, or gluing, etc.

[0041] In some embodiments, the connecting arms 412 generally have the shape of long elongated ones.

[0042] In some embodiments, the connecting arms 412 are made of metal. For example, the connecting arms 412 are made of elastic steel sheets.

[0043] Referring to [Fig. 2], [Fig. 4], and [Fig. 5], in certain embodiments, the slotted portion comprises a first slotted portion 3211 and a second slotted portion 3212 arranged oppositely. The number of connecting arms 412 is two, and the clip comprises a first clip 4111 and a second clip 4112. The two connecting arms 412 are arranged oppositely, and the first clip 4111 and the second clip 4112 are respectively arranged on the two eighth end portions 4122. The elastic element 5 comprises a ninth end portion 51 and a tenth end portion 52 arranged oppositely. The ninth end part 51 is connected to one of the eighth end parts 4122, and the tenth end part 52 is connected to the other of the eighth end parts 4122.When the fifth end part 31 rotates to the first position relative to the fourth end part 22, the first clip 4111 is engaged with the first slot part 3211 and the second clip 4112 is engaged with the second slot part 3212.

[0044] In certain embodiments, the elastic element 5 is used to generate the elastic action that resists the movement of the eighth end portion 4122 from the locked position to the unlocked position under pressure. By pressing on the two opposingly arranged eighth end portions 4122, the two eighth end portions 4122 move closer together, thus causing the first clip 4111 and the second clip 4112 to avoid the first slotted portion 3211 and the second slotted portion 3212, respectively.

[0045] In other embodiments, the number of connecting arms 412 is one. The clip comprises only the first clip 4111, and the slot portion comprises only the first slot portion 3211; or the clip comprises only the second clip 4112, and the slot portion comprises only the second slot portion 3212.

[0046] Referring to [Fig. 2], [Fig. 5], [Fig. 6], and [Fig. 9], in certain embodiments, the second locking part 41 is provided with a receiving groove 42, and a lateral wall of the receiving groove 42 is provided with a first opening 421 and a second opening 422 which are arranged oppositely. The elastic element 5 and the second locking part 41 are both disposed in the receiving groove 42, the first clip 4111 passes through the first opening 421, and the second clip 4112 passes through the second opening 422.

[0047] In some embodiments, the eighth end parts 4122 are provided with the pressing parts 4122a, and the pressing parts 4122a of the two eighth end parts 4122 are arranged back to back along a direction from the ninth end part 51 to the tenth end part 52. When the eighth end part 4122 is in the locked position, one of the pressing parts 4122a protrudes from the second locking element 4 through the first opening 421, and the other of the pressing parts 4122a protrudes from the second locking part 4 through the second opening 422. The pressing part 4122a is used to facilitate the user's pressure on the eighth end part 4122.

[0048] In some embodiments, the elastic element 5 is a spring.

[0049] In some embodiments, a first limiting projection 4122b and a The second limiting projection 4122c is disposed between the two eighth end portions 4122, respectively. The ninth end portion 51 is sleeved onto the first limiting projection 4122b, and the tenth end portion 52 is sleeved onto the second limiting projection 4122c.

[0050] In some embodiments, the mounting projection 43 protrudes from the bottom of the receiving groove 42.

[0051] Referring to Figures 7 and 8, in other embodiments, the second locking element 4 is provided with a receiving groove 42, and the elastic element 5 and the second locking portion 4141 are both disposed in the receiving groove 42. The second locking element 4 is also provided with a first limiting hole 423 and a second limiting hole 424 which are disposed in opposite directions along a line from the ninth end portion 51 to the tenth end portion 52. The first clip 4111 passes through the first limiting hole 423, and the second clip 4112 passes through the second limiting hole 424.

[0052] In some embodiments, the first clip 4111 and the second clip 4112 are protruding structures formed integrally with the connecting arms 412. For example, a portion of the connecting arms 412 forms the first clip 4111 after being pressed in the thickness direction.

[0053] In some embodiments, the connecting arms 412 are made of metal plates, and the first clip 4111 and the second clip 4112 are obtained by punching the metal plate in the direction of the thickness.

[0054] In some embodiments, the first locking element 3 comprises an upper wall 33, a first side wall 34, and a second side wall 35. The first side wall 34 and the second side wall 35 are arranged in opposite directions, and the upper wall 33 is connected between the first side wall 34 and the second side wall 35. The first slot portion 3211 is disposed on the first side wall 34, and the second slot portion 3212 is disposed on the second side wall 35. When the first locking portion 321 and the second locking portion 41 are locked, the first side wall 34 and the second side wall 35 are respectively located on two sides that are back-to-back with the second locking element 4 along the direction from the ninth end part 51 to tenth end part 52. The first limiting hole 423 is aligned with the first slot part 3211, and the second limiting hole 424 is aligned with the second slot part 3212. The first clip 4111 passes through the first limiting hole 423 and the first slot part 3211 sequentially, and the second clip 4112 passes through the second limiting hole 424 and the second slot part 3212 sequentially.

[0055] In some embodiments, the eighth end portions 4122 are provided with the pressing portions 4122a. The pressing portions 4122a of the two eighth ends 4122 are arranged back to back in the direction from the ninth end 51 to the tenth end 52. The second locking element 4 is also provided with a third limiting hole 425 and a fourth limiting hole 426 which are arranged in opposite directions in the direction from the ninth end portion 51 to the tenth end portion 52. One of the pressing portions 4122a passes through the third limiting hole 425, and the other of the pressing portions 4122a passes through the fourth limiting hole 426.

[0056] In some embodiments, the pressing part 4122a is a projecting structure formed integrally with the connecting arms 412. For example, a part of the eighth end part 4122 forms the pressing part 4122a after being pressed in the thickness direction.

[0057] In some embodiments, the connecting arms 412 are made of metal plates, and the pressing part 4122a is obtained by punching the metal plate in the direction of the thickness.

[0058] In some embodiments, the elastic element 5 is an elastic piece folded in the shape of a "V", and a curvature of the elastic element 5 can generate an elastic deformation, so that the ninth end part 51 and the tenth end part 52 move closer together or further apart.

[0059] In certain embodiments, the ninth end portion 51 of the elastic element is provided with a first insertion portion 511, and the tenth end portion 52 of the elastic element 5 is provided with a second insertion portion 521. The two opposite surfaces of the two connecting arms 412 are provided with insertion grooves 4122b. The first insertion portion 511 and the second insertion portion 521 are inserted into the insertion grooves 4122b of the two connecting arms 412, respectively.

[0060] In some embodiments, the part of the eighth end part 4122 forms the insertion groove 4122b on a rear surface of the pressing part 4122a as a consequence of having been indented in the thickness direction to form the pressing part 4122a.

[0061] In some embodiments, the first clip 4111 and one of the pressing parts 4122a are arranged on one of the connecting arms 412 sequentially along a direction from the seventh end part 4121 to the eighth end part 4122. The second clip 4112 and the other of the pressing parts 4122a are arranged on the other of the connecting arms 412 sequentially in the direction from the seventh end part 4121 to the eighth end part 4122.

[0062] Referring to [Fig. 2], [Fig. 4], [Fig. 10], and [Fig. 11], in certain embodiments, the first end portion 11 comprises a first pressing piece 111, a first connecting portion 112, and a second pressing piece 113. The first pressing piece 111 and the second pressing piece 113 are arranged oppositely. The first connecting portion 112 connects the first pressing piece 111 to the second pressing piece 113. A first clamping groove 114, used for clamping the upper end of the ring body 200, is formed between the first pressing piece 111 and the second pressing piece 113.

[0063] In some embodiments, the third end portion 21 comprises a third pressing piece 211, a second connecting portion 212, and a fourth pressing piece 213. The third pressing piece 211 and the fourth pressing piece 213 are arranged in opposite directions. The second connecting portion 212 links the third pressing piece 211 to the fourth pressing piece 213. A second clamping groove 214, used for clamping the lower end of the annular body 200, is formed between the third pressing piece 211 and the fourth pressing piece 213.

[0064] In some embodiments, the fifth end portion 31 is provided with a first connection hole 311 and a second connection hole 312. An axis of the first connection hole 311 is parallel to an axis of the second connection hole 312. The second end portion 12 is provided with a third connection hole 121, and the fourth end portion 22 is provided with a fourth connection hole 221. The first connection hole 311 is aligned with the third connection hole 121 in the axial direction of the first connection hole 311, and the second connection hole 312 is aligned with the fourth connection hole 221. The locking device 100 comprises a first connection shaft 6 and a second connection shaft 7.The first connecting tree 6 passes through the first connecting hole 311 and the third connecting hole 121, and the second connecting tree 7 passes through the second connecting hole 312 and the fourth connecting hole 221.

[0065] In certain embodiments, the fifth end portion 31 comprises a first mounting portion 313 and a second mounting portion 314 which are arranged oppositely. The first connection hole 311 comprises a The first part of a hole 3111 and a second part of a hole 3112. The first part of a hole 3111 is disposed on the first mounting part 313, and the second part of a hole 3112 is disposed on the second mounting part 314. The second connection hole 312 includes a third part of a hole 3121 and a fourth part of a hole 3122. The third part of hole 3121 is disposed on the first mounting part 313, and the fourth part of hole 3122 is disposed on the second mounting part 314. A housing space a is defined between the first mounting part 313 and the second mounting part 314. A portion of the second end part 12, which has the third connection hole 121, is located in the housing space a. A portion of the fourth end portion 22, equipped with the fourth connection hole 221, is located in the reception space a.The first connecting shaft 6 passes through the first part of hole 3111, the third connecting hole 121, and the second part of hole 3112 sequentially. The second connecting shaft 7 passes through the part of the third hole 3121, the fourth connecting hole 221, and the part of the fourth hole 3122 sequentially.

[0066] In some embodiments, the first connecting element 1 is formed by bending a metal sheet into a strip shape.

[0067] In some embodiments, the second connecting element 2 is formed by bending a metal sheet into a strip shape.

[0068] In some embodiments, the first connecting element 1 and the second connecting element 2 are, without limitation, made of 304 stainless steel.

[0069] In some embodiments, the locking device 100 includes a connecting bolt 8, and the connecting bolt 8 is fixed to the second locking element 4 in screwed assembly mode after passing through the second connecting element 2.

[0070] Referring to Figures 1 and 3, based on the same inventive concept, the present application also provides a cake mold 1000, comprising the annular body 200 and the locking device 100 according to any one of the above embodiments.

[0071] In some embodiments, the annular body 200 comprises an eleventh end 201 and a twelfth end 202. The eleventh end portion 201 and the twelfth end portion 202 overlap at least partially along a radial direction of the annular body 200. A portion 2011 of the eleventh end 201 overlaps the twelfth end 202, and a portion 2021 of the twelfth end 202 overlaps the eleventh end 201, constituting the overlapping portion 203 of the annular body 200. The eleventh end 201 and the twelfth end 202 can slide about an axis of the annular body 200 relative to each other, thus increasing or decreasing an overlap area between the eleventh end part 201 and twelfth end part 202, and further increasing or decreasing the diameter of the annular body 200.

[0072] In some embodiments, the annular body 200 is formed by winding a sheet of stainless steel.

[0073] In some embodiments, the cake mold 1000 includes a limiting ring 300, and the limiting ring 300 is sleeved onto the part 203 superimposed on the annular body 200. The limiting ring 300 is used to limit the superimposed part 203 of the body of the ring 200 in an axial direction of the body of the ring 200.

[0074] In certain embodiments, the fourth end portion 22 is fixed to an external peripheral wall of the annular body 200. The fourth end portion 22 is fixed to an external peripheral portion of the annular body 200, which helps to reduce the occurrence of a problem whereby the second locking element 4 causes the fourth end portion 22 to rotate relative to the annular body 200 when the first locking portion 321 is not locked with the second locking portion 4L

[0075] In some embodiments, the fourth end part 22 is welded and fixed to the outer peripheral wall of the annular body 200. It can be understood that in other embodiments, the fourth end part 22 can also be fixed to the annular body 200 by gluing, riveting or otherwise.

[0076] The above descriptions are merely embodiments of the present application and do not limit the scope of the patent in this application. Equivalent structures or equivalent process transformations carried out using the specification and content of the drawings in this application, or used directly or indirectly in other related technical fields, are likewise included within the scope of patent protection in this application.

Claims

Demands

1. Locking device (100), characterized in that it comprises: -a first connecting element (1), comprising a first end part (11) and a second end part (12) which are arranged oppositely, in which the first end part (11) is used to clamp an upper end of an annular body (200); -a second connecting element (2), comprising a third end part (21) and a fourth end part (22) which are arranged oppositely, in which the third end part is used to clamp a lower end of the annular body (200);-a first locking element (3), comprising a fifth end part (31) and a sixth end part (32) which are arranged oppositely, wherein the fifth end part is rotatably connected to the fourth end part, the fifth end part is rotatably connected to the second end part, the fifth end part can rotate about an axis of rotation relative to the fourth end part, and the sixth end part is provided with a first locking part (321);and -a second locking element (4) fixed to the second connecting element, wherein the second locking element is provided with a second locking part (41), - wherein when the fifth end part rotates to a first position relative to the fourth end part, the first locking part and the second locking part are locked, and the fifth end part applies a pulling force to the second end part and the fourth end part, respectively, to cause the first end part to approach the third end part.;

2. A locking device (100) according to claim 1, wherein the first locking portion comprises a slotted portion, the second locking portion comprises a clip, and when the fifth end portion rotates to the first position relative to the fourth end portion, the sixth end portion covers the second locking element and the clip is engaged by interlocking to the slotted portion along a direction in which the sixth end portion (32) covers the second locking element (4).

3. A locking device according to claim 2, wherein the second locking element (4) is provided with an elastic element (5), the second locking part (41) comprises connecting arms (412), each of the connecting arms comprising a seventh end part (4121) and an eighth end part (4122) which are arranged oppositely, the seventh end part (4121) is rotatably connected to the second locking element, the clip being disposed on the eighth end part, and the eighth end part being connected to the elastic element, wherein the eighth end part can move back and forth between a locked position and an unlocked position under the drive of the seventh end part, the clip being mounted by snap-fitting with the slotted part when the eighth end part is in the locked position,The clip is separated from the slotted portion when the eighth end part is in the unlocked position, and the elastic element is used to generate an elastic action that resists movement of the eighth end part from the locked position to the unlocked position.

4. A locking device according to claim 2, wherein the second locking element is provided with an elastic element, the second locking element comprises connecting arms, each connecting arm comprising a seventh end portion and an eighth end portion arranged oppositely, the seventh end portion being fixed to the second locking element and the eighth end portion being connected to the elastic element, wherein the eighth end portion can be elastically bent relative to the seventh end portion to move back and forth between a locked position and an unlocked position, the clip being adjusted by snapping into the slotted portion when the eighth end portion is in the locked position, the clip being separated from the slotted portion when the eighth end portion is in the unlocked position, and the element

5.

6.

7. elastic is used to generate an elastic action that resists movement of the eighth end part from the locked position to the unlocked position. A locking device according to claim 3 or 4, wherein the slotted portion comprises a first slotted portion (3211) and a second slotted portion (3212) which are arranged oppositely, the number of connecting arms is two, the clip comprises a first clip (4111) and a second clip (4112), the two connecting arms are arranged oppositely, the first clip and the second clip are arranged on the two end eighths (4122), respectively, the elastic element comprises a ninth end part (51) and a tenth end part (52) which are arranged oppositely, the ninth end part is connected to one of the end eighths, the tenth end part is connected to the other of the end eighths, and when the fifth end part rotates to the first position relative to the fourth end part,The first clip is engaged with the first part of the slot, and the second clip is engaged with the second part of the slot. Locking device (100) according to claim 5, wherein the second locking element is provided with a receiving groove, a side wall of the receiving groove is provided with a first opening (421) and a second opening (422) which are arranged oppositely, the elastic element and the second locking part being both arranged in the receiving groove (42), the first clip passing through the first opening and the second clip passing through the second opening;and -the pressure parts of the eighth end being provided with pressing parts (4122a), the pressing parts (4122a) of the two eighth end parts being arranged back to back along a direction from the ninth end part to the tenth end part, one of the pressing parts (4122a) protruding from the second locking element through the first opening, and the other of the pressing parts protruding from the second locking element through the second opening.; Locking device according to claim 5, wherein the second locking element is provided with a reception groove,

8. the elastic element and the second locking part being both disposed in the receiving groove, the second locking element also being provided with a first limiting hole (423) and a second limiting hole (424) which are disposed oppositely along a direction from the ninth end part to the tenth end part, the first clip passing through the first limiting hole and the second clip passing through the second limiting hole; and -the eighth end parts being provided with pressing parts, the pressing parts of the two eighth end parts being arranged back to back along a direction from the ninth end part to the tenth end part, the second locking element also being provided with a third limiting hole and a fourth limiting hole which are arranged oppositely along the direction from the ninth end part to the tenth end part, one of the pressing parts passes through the third limiting hole (425), and the other of the pressing parts passes through the fourth limiting hole (426). Locking device according to claim 1, wherein: the first end part comprises a first pressing piece, a first connecting part and a second pressing piece, the first pressing piece and the second pressing piece are arranged oppositely, the first connecting part connecting the first pressing piece to the second pressing piece, and a first clamping groove used to clamp the upper end of the annular body is formed between the first pressing piece and the second pressing piece;and / or The third end part comprises a third pressing piece, a second connecting part and a fourth pressing piece, the third pressing piece and the fourth pressing piece are arranged oppositely, the second connecting part connecting the third pressing piece to the fourth pressing piece, and a second clamping groove used to clamp the lower end of the annular body is formed between the third pressing piece and the fourth pressing piece; and / or the fifth end part is provided with a first connecting hole and a second connecting hole, an axis of the first; The connecting hole is parallel to an axis of the second connecting hole, the second end part is provided with a third connecting hole, the fourth end part is provided with a fourth connecting hole, the first connecting hole is aligned with the third connecting hole in an axial direction of the first connecting hole, the second connecting hole is aligned with the fourth connecting hole, the locking device comprises a first connecting shaft (6) and a second connecting shaft (7), the first connecting shaft passes through the first connecting hole and the third connecting hole, and the second connecting shaft passes through the second connecting hole and the fourth connecting hole.

9. Cake mold (1000), comprising: a ring body; and the locking device according to any one of claims 1 to 8.

10. Cake mold (1000) according to claim 9, wherein the fourth end portion is fixed to an external peripheral wall of the annular body; and / or The cake mold includes a limiting ring, and the limiting ring is sleeved onto a covered portion of the annular body.

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