Mini oven timer

Abstract

The invention relates to the related technical field of oven timers, and discloses a mini oven timer which comprises a shell, and the shell comprises a first protective cover and a second protective cover which are buckled with each other. According to the invention, the hairspring, the balance wheel and the frame are integrated into an integral modularized structure, the connection between the whole hairspring and balance wheel assembly and the shell of the timer is realized through the connection relationship between the frame and the shell of the timer, and the hairspring bending structure at the tail end of the hairspring and the frame are fixedly arranged relatively, so that the hairspring and balance wheel assembly is convenient to use. When the hairspring balance wheel assembly needs to be debugged independently, the hairspring balance wheel assembly can be taken down from the shell of the timer as a whole, and after debugging is completed, the hairspring balance wheel assembly and the shell of the timer are assembled as a whole, so that other assembled structures of the timer do not need to be disassembled, and the assembly efficiency is improved. Therefore, the hairspring and balance wheel assembly can be integrally disassembled and assembled, and the assembling efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field related to oven timers, in particular to a mini oven timer. Background Art

[0002] An oven timer is a part used in an oven to control the operating time of the oven. It is an important component of the oven and requires relatively special properties to operate in the oven.

[0003] The core part of most existing oven timers is a balance spring system, which serves as a timing reference. The timer's running accuracy can be adjusted by adjusting the balance spring system. Most existing balance spring systems are connected to the shell of the timer. When the balance spring system needs to be debugged multiple times, the assembled timer must be disassembled again before the balance spring system can be removed, which undoubtedly reduces the use efficiency of the timer. In addition, most existing oven timers are too large and occupy more area of ​​the oven. In order to solve the above problems, a mini oven timer is proposed. Summary of the invention

[0004] The present invention provides a mini oven timer, which solves the problems in the above-mentioned background technology.

[0005] The present invention solves the technical problem by adopting the following technical solutions:

[0006] A mini oven timer comprises a housing, wherein the housing comprises a first protective cover and a second protective cover which are buckled with each other, wherein a hairspring balance assembly is arranged in the housing, wherein the hairspring balance assembly comprises a frame, a hairspring, a balance wheel and a rotating shaft;

[0007] The frame is detachably connected to the housing, the hairspring and the balance wheel are sleeved on the rotating shaft, the rotating shaft is pivotally connected to the frame, and a fixing structure for fixing a hairspring bending structure at the end of the hairspring is provided on the frame;

[0008] The frame comprises a first supporting wall and a second supporting wall which are arranged opposite to each other, and two ends of the rotating shaft are pivotally connected to the first supporting wall and the second supporting wall respectively;

[0009] The first supporting wall, the hairspring, the balance wheel and the second supporting wall are connected in sequence;

[0010] The housing is also provided with a cam assembly, a gear transmission assembly, an escapement assembly and a switch assembly;

[0011] The frame is connected to the housing, and the balance wheel is matched with the escapement assembly.

[0012] Preferably, the first supporting wall and the second supporting wall are made of hard plastic, and the fixing structure comprises a fixing pin column and a fixing pin with a hollow interior;

[0013] The fixing pin is protrudingly arranged on the inner side surface of the second supporting wall opposite to the first supporting wall and extends toward the first supporting wall. A convex rib is arranged at the end of the fixing pin, and the convex rib cooperates with the fixing pin to fix the hairspring bending structure.

[0014] Preferably, the first supporting wall and the second supporting wall are respectively provided with shaft holes, and both ends of the rotating shaft are respectively installed in the corresponding shaft holes;

[0015] Preferably, a bearing is provided between the rotating shaft and the shaft hole, the outer wall of the bearing is stepped along the axial direction, the end of the bearing with a smaller diameter matches the diameter of the shaft hole and is arranged in the shaft hole, and the inner end surface of the end with a larger diameter conflicts with the outer side surface of the first support wall / the second support wall;

[0016] A protrusion is provided on the outer side surface of the first supporting wall / the second supporting wall for matching with the end with a larger diameter of the bearing.

[0017] Preferably, a connection structure for connecting to a housing of a timer is provided on the outer side surface of the first supporting wall and / or the second supporting wall.

[0018] Preferably, the connection structure is a snap-fit ​​structure.

[0019] Preferably, a mounting opening for mounting the hairspring balance assembly is provided at the buckling portion between the first protective cover and the second protective cover.

[0020] The advantages and positive effects of the present invention are as follows: by integrating the hairspring and the balance wheel with the frame into an integral modular structure, the connection between the hairspring balance wheel assembly as a whole and the timer housing is realized through the connection relationship between the frame and the housing of the timer, and the hairspring bending structure at the end of the hairspring is relatively fixedly arranged with the frame, so when it is necessary to debug the hairspring balance wheel assembly separately, the hairspring balance wheel assembly can be removed from the housing of the timer as a whole, and when the debugging is completed, the hairspring balance wheel assembly and the housing of the timer are assembled as a whole, so that the purpose of disassembling and assembling the hairspring balance wheel assembly as a whole is achieved without disassembling other assembled structures of the timer, thereby greatly improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] Figure 1 It is a schematic diagram of the structure of the present invention;

[0023] Figure 2 yes Figure 1 Schematic diagram of the explosion structure;

[0024] Figure 3 yes Figure 1 A is a schematic diagram of the enlarged structure of the middle part;

[0025] Figure 4 is a schematic diagram of the structure of a timer in another embodiment;

[0026] Figure 5 yes Figure 1 A partial schematic diagram of the fixed structure;

[0027] Figure 6 yes Figure 4 Schematic diagram after assembly.

[0028] The symbols in the accompanying drawings are described as follows:

[0029] 10. Balance spring assembly; 11. Frame; 101. First support wall; 102. Second support wall; 103. Shaft hole; 104. Bearing; 105. Protrusion; 106. Buckle; 107. Blind hole groove; 108. Protrusion; 109. Observation through hole; 12. Balance spring; 121. Balance spring bending structure; 13. Balance wheel; 131. Fixed needle; 14. Rotating shaft; 15. Fixed structure; 151. Fixed pin; 152. Fixed pin; 153. Convex rib; 154. First fixed part; 155. Second fixed part; 156. First opening slot; 157. Second opening slot;

[0030] 20. housing; 21. first protective cover; 22. second protective cover;

[0031] 30. Cam assembly;

[0032] 40. Gear transmission assembly;

[0033] 50. Escapement assembly; 51. Escapement fork;

[0034] 60. Switch assembly. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] The embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0037] Reference Figures 1 to 6As shown, an oven timer is a part used in an oven to control the running time of the oven. It is an important part of the oven. Since it needs special properties to run in the oven, the core part of most existing oven timers is a balance spring system, which plays the role of a timing reference. Adjusting the balance spring system can adjust the timer's running accuracy. Most existing balance spring systems are connected to the shell of the timer. When the balance spring system needs to be debugged multiple times, the assembled timer must be disassembled again before the balance spring system can be removed, which undoubtedly reduces the use efficiency of the timer. In addition, most existing oven timers are too large and occupy more area of ​​the oven. In order to solve the above problems, a mini oven timer is proposed, including a shell, the shell includes a first protective cover and a second protective cover that are buckled with each other, and a balance spring assembly is arranged in the shell, and the balance spring assembly includes a frame, a hairspring, a balance wheel and a rotating shaft;

[0038] The frame is detachably connected to the housing, the hairspring and the balance wheel are sleeved on the rotating shaft, the rotating shaft is pivotally connected to the frame, and a fixing structure for fixing a hairspring bending structure at the end of the hairspring is provided on the frame;

[0039] The frame comprises a first supporting wall and a second supporting wall which are arranged opposite to each other, and two ends of the rotating shaft are pivotally connected to the first supporting wall and the second supporting wall respectively;

[0040] The first supporting wall, the hairspring, the balance wheel and the second supporting wall are connected in sequence;

[0041] The housing is also provided with a cam assembly, a gear transmission assembly, an escapement assembly and a switch assembly;

[0042] The frame is connected to the housing, and the balance wheel cooperates with the escapement assembly. By integrating the hairspring and the balance wheel with the frame into an integral modular structure, the connection between the hairspring balance wheel assembly as a whole and the timer housing is realized through the connection relationship between the frame and the housing of the timer, and the hairspring bending structure at the end of the hairspring is relatively fixedly arranged with the frame. Therefore, when it is necessary to debug the hairspring balance wheel assembly separately, the hairspring balance wheel assembly can be removed from the housing of the timer as a whole. When the debugging is completed, the hairspring balance wheel assembly and the housing of the timer are assembled as a whole, so that the purpose of disassembling and assembling the hairspring balance wheel assembly as a whole is achieved without disassembling other assembled structures of the timer, thereby greatly improving the assembly efficiency.

[0043] It should be noted that the hairspring 12, the balance wheel 13 and the frame 11 are integrated into an integral modular structure, and the connection between the hairspring balance wheel assembly 10 as a whole and the timer housing 20 is realized through the connection relationship between the frame 11 and the timer housing 20, and the hairspring bending structure 121 at the end of the hairspring 12 is relatively fixedly arranged with respect to the frame 11.

[0044] Therefore, when the balance spring assembly 10 needs to be debugged separately, the balance spring assembly 10 can be removed from the housing 20 of the timer as a whole; when the debugging is completed, the balance spring assembly 10 and the housing 20 of the timer are assembled as a whole.

[0045] Furthermore, the above-mentioned structure can achieve the purpose of disassembling and assembling the entirety of the balance spring assembly 10 without disassembling other assembled structures of the timer, thereby greatly improving assembly efficiency.

[0046] Furthermore, it is relatively difficult to make adjustments in a relatively small area of ​​an oven. The balance spring assembly 10 can be disassembled and adjusted without disassembling other parts, which greatly facilitates the overall operation.

[0047] It should also be noted that the frame 11 includes a first support wall 101 and a second support wall 102 that are arranged opposite to each other, and the two ends of the rotating shaft 14 are pivotally connected to the first support wall 101 and the second support wall 102 respectively, and the first support wall 101, the hairspring 12, the balance wheel 13 and the second support wall 102 are connected in sequence; the frame 11 is a frame structure, including a first support wall 101 and a second support wall 102 that are arranged opposite to each other, and the hairspring 12 and the balance wheel 13 are coaxially assembled and then assembled with the first support wall 101 and the second support wall 102, while ensuring that the rotating shaft 14 can pivot relative to the first support wall 101 and the second support wall 102.

[0048] Furthermore, by arranging both ends of the rotating shaft 14 to be relatively pivotally connected to the first supporting wall 101 and the second supporting wall 102 , the hairspring 12 and the balance wheel 13 can realize their own functions under the action of the escapement assembly 50 .

[0049] Additionally, the first support wall 101 and the second support wall 102 are made of hard plastic, and the fixing structure 15 includes an internally hollow fixing pin 152 column 151 and a fixing pin 152; the fixing pin 152 column 151 is protruded on the inner side surface of the second support wall 102 opposite to the first support wall 101, and extends toward the first support wall 101, and a convex rib 153 is provided at the end of the fixing pin 152 column 151, and the convex rib 153 cooperates with the fixing pin 152 to fix the hairspring bending structure 121.

[0050] Correspondingly, since the interior of the oven timer will generate high temperature during use, there is another embodiment, specifically: the first support wall 101 and the second support wall 102 are made of metal material, the fixing structure 15 is arranged at the bottom of the first support wall 101, and includes a first fixing portion 154 and a second fixing portion 155; the first fixing portion 154 is a plate-like structure formed by extending from the bottom edge of the first support wall 101 toward the direction of the hairspring 12, and the first fixing portion 154 is provided with a first opening groove 156 with an opening direction toward the hairspring 12.

[0051] It is worth mentioning that the second fixing portion 155 is a “V”-shaped folded edge structure formed by extending the bottom edge of the first supporting wall 101 toward the hairspring 12 and then folding back, and the opening of the “V”-shaped folded edge structure constitutes the second opening groove 157 of the second fixing portion 155 .

[0052] Furthermore, the hairspring bending structure 121 is inserted into the first opening slot 156 and the second opening slot 157 and is fixedly disposed relative to the first fixing portion 154 and the second fixing portion 155 .

[0053] It should be noted that, by utilizing the long-lasting deformation property of metal materials, after the hairspring bending structure 121 passes through the first opening groove 156 and the second opening groove 157 in sequence, the staff then clamps the first opening groove 156 and the second opening groove 157 with pliers to fix the hairspring bending structure 121. The implementation method is simple and feasible.

[0054] And in the subject, “mini” refers to the overall structural size, which makes it easy to make room inside the oven.

[0055] It should be explained that blind hole grooves 107 are provided on the opposite sides of the first supporting wall 101 and the second supporting wall 102, and the two ends of the rotating shaft 14 are respectively embedded in the blind hole grooves 107. Taking advantage of the good ductility of metal materials, in step B2, blind hole grooves 107 are provided on the first supporting wall 101 and the second supporting wall 102, so that the two ends of the rotating shaft 14 are respectively embedded in the blind hole grooves 107 to realize the connection between the rotating shaft 14 and the frame 11.

[0056] Furthermore, in the process of forming the blind hole, the back of the blind hole groove 107 protrudes and forms a protrusion 108 with the outer side surfaces of the first supporting wall 101 and the second supporting wall 102, thereby enhancing the supporting effect of the blind hole groove on the rotating shaft. The edges of the first supporting wall and the second supporting wall of the frame are provided with a concave-convex matching structure, and a stepped structure matching the concave-convex structure can be provided on the shell of the timer. The wall thickness of the frame is used to be stuck in the stepped structure of the shell, thereby realizing the assembly relationship between the frame and the shell of the timer.

[0057] It can be understood that in the above two embodiments, the first supporting wall and / or the second supporting wall is provided with an observation through hole 109 for observing the direction of the fixed needle 131 on the balance wheel. By providing the observation through hole 109, it is convenient for the staff to observe the direction of the fixed needle 131 on the balance wheel to ensure the assembly relationship.

[0058] It should also be noted that the frame 11 should also include a third side wall and / or a fourth side wall for stabilizing the first support wall 101 and the second support wall 102. For example, the third side wall is a side wall connected to the first support wall 101 and the second support wall 102 on both sides, and the fourth side wall is a top wall connected to the first support wall 101, the second support wall 102, and the third side wall, etc.

[0059] Furthermore, structures such as reinforcing ribs for enhancing the stability of the frame 11 may be provided between the first supporting wall 101 , the second supporting wall 102 , the third side wall, and the fourth side wall of the present invention.

[0060] It should be noted that the timer of the present invention also includes other components required to realize its timing function, such as a switch assembly 60, and after the hairspring balance assembly 10 is installed in the housing 20 of the timer and the balance wheel 13 is matched with the escapement assembly 50, the working principle of the timer is no different from the prior art. Therefore, the present invention will no longer repeat the working principle of the timer.

[0061] It should be emphasized that the embodiments described in the present invention are illustrative rather than restrictive, and therefore the present invention is not limited to the embodiments described in the specific implementation manners. Any other implementation manners derived by those skilled in the art based on the technical solutions of the present invention also fall within the scope of protection of the present invention.

Claims

1. A mini oven timer, comprising a housing (20), characterized in that: The housing (20) comprises a first protective cover (21) and a second protective cover (22) which are interlocked, and a hairspring (12) and a balance wheel (13) assembly (10) is arranged in the housing (20), and the hairspring (12) and the balance wheel (13) assembly (10) comprises a frame (11), a hairspring (12), a balance wheel (13) and a rotating shaft (14); The frame (11) is detachably connected to the housing (20); the hairspring (12) and the balance wheel (13) are sleeved on the rotating shaft (14); the rotating shaft (14) is pivotally connected to the frame (11); and a fixing structure (15) for fixing a hairspring (12) bending structure at the end of the hairspring (12) is provided on the frame (11); The frame (11) comprises a first supporting wall (101) and a second supporting wall (102) which are arranged opposite to each other, and two ends of the rotating shaft (14) are pivotally connected to the first supporting wall (101) and the second supporting wall (102) respectively; The first supporting wall (101), the hairspring (12), the balance wheel (13) and the second supporting wall (102) are connected in sequence; The housing (20) is also provided with a cam assembly (30), a gear transmission assembly (40), an escapement assembly (50) and a switch assembly; The frame (11) is connected to the housing (20), and the balance wheel (13) cooperates with the escapement assembly (50).

2. A mini oven timer according to claim 1, characterized in that: The first supporting wall (101) and the second supporting wall (102) are made of hard plastic, and the fixing structure (15) comprises a fixing pin (152) column (151) with a hollow interior and a fixing pin (152); The fixing pin (152) column (151) is protrudingly arranged on the inner side surface of the second supporting wall (102) which is arranged opposite to the first supporting wall (101), and extends toward the first supporting wall (101); a convex rib (153) is arranged at the end of the fixing pin (152) column (151); the convex rib (153) cooperates with the fixing pin (152) to fix the bending structure of the hairspring (12).

3. A mini oven timer according to claim 2, characterized in that: The first supporting wall (101) and the second supporting wall (102) are respectively provided with shaft holes (103), and both ends of the rotating shaft (14) are respectively installed in the corresponding shaft holes (103); Preferably, a bearing (104) is provided between the rotating shaft (14) and the shaft hole (103), and the outer wall of the bearing (104) is stepped along the axial direction; the end with a smaller diameter of the bearing (104) matches the diameter of the shaft hole (103) and is arranged in the shaft hole (103), and the inner end surface of the end with a larger diameter abuts against the outer side surface of the first supporting wall (101) / the second supporting wall (102); A protrusion (105) for matching with an end of the bearing (104) with a larger diameter is provided on the outer side surface of the first supporting wall (101) / the second supporting wall (102).

4. The mini oven timer according to claim 3, characterized in that: A connection structure for connecting to a housing (20) of a timer is provided on the outer side surface of the first supporting wall (101) and / or the second supporting wall (102).

5. The mini oven timer according to claim 4, characterized in that: The connection structure is a buckle (106) structure.

6. The mini oven timer according to claim 1, characterized in that: The buckling portion between the first protective cover (21) and the second protective cover (22) is provided with an installation opening for installing the hairspring (12) balance wheel (13) assembly (10).

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