Oven with buffer device for controlling door opening and closing system
By using a buffer device and ratchet-pawl transmission principle to control the opening and closing state of the oven door, the problems of unstable spring force and complex electronic control in traditional oven door structures are solved, achieving a moderate opening and closing experience and safety.
Patent Information
- Application Number
- CN202422916597.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-24
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In traditional ovens, the spring force control is poor, which can easily produce loud noises and pose safety hazards. The electronic control system is complex, costly, and has poor stability.
The door opening and closing system is controlled by a buffer device. It utilizes the combined force of spring force, door weight, and guide rail to achieve a balance, combined with the ratchet and pawl transmission principle, so that the door can automatically stop at a specific position. The opening and closing state of the door is controlled by a micro switch to avoid slamming the door shut.
It achieves moderate door opening and closing force, improves user experience, reduces noise and safety risks, reduces energy consumption, simplifies structure, and improves stability and safety.
Smart Images
Figure CN223469158U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to oven technical field especially a kind of oven with buffer device control switch door system. BACKGROUND
[0002] Traditional household small oven usually just simply use spring and door lock piece with simple long hole to achieve the simple function of controlling door opening and closing. Because of simple structure, the effect achieved is not very good, in order to close the door well, so spring force will be relatively designed larger, otherwise, after handle is released after door is opened to a certain angle, door can be directly dropped to desktop due to too heavy self weight, spring force is not enough large; after spring force is large, door can also be directly closed with very large force in door closing process, which emits very loud sound and can cause injury due to clamping to user's hand.
[0003] In addition, automatic opening and closing of door controlled by electronic control and synchronous motor can also be used, but this way has the following problems: 1. more parts and cost are increased, structure is complex; 2. electric energy is increased; 3. electronic control often has unstable factors due to influence of temperature and humidity and other use environment; so it is necessary to design a kind of buffer device control switch door system to achieve the improvement of user's use comfort.
[0004] Therefore, it is necessary to improve the prior art. CONTENT OF UTILITY MODEL
[0005] The utility model aims at providing a kind of oven with buffer device control switch door system, to solve the technical problems that spring force is not controlled well in the opening and closing buffer structure of traditional oven, loud sound is easily emitted, and existing electric control switch door system is complex in structure, high in cost and unstable.
[0006] To achieve the above object, the technical scheme of the utility model discloses: a kind of oven with buffer device control switch door system, it includes: oven main body, door main body and buffer device;The buffer device includes: spring fixed seat, door extension spring, door lock piece, left door fixed seat, right door fixed seat, guide wheel, guide wheel seat and buffer pawl;The door main body is connected on the left inner side plate and right inner side plate of oven main body respectively through left door fixed seat and right door fixed seat;The lower end of left door fixed seat is hinged with the left side of door main body;Right door fixed seat is hinged with the right side of door main body;Spring fixed seat is fixed on the left inner side plate of oven main body (on, one end of door extension spring is hooked on spring fixed seat, the other end of door extension spring is hooked on door lock piece;Door lock piece is hinged with door main body by rivet, guide wheel and guide wheel seat are fixed on left door fixed seat by screw through the guide rail hole of door lock piece;Buffer pawl is fixed between left door fixed seat and left inner side plate;The inner side of door lock piece is provided with the ratchet opposite the clamping position direction of buffer pawl.
[0007] The oven with buffer device control switch door system, wherein the front end and the rear end of the guide rail hole of the door lock piece are respectively provided with two positioning hole points, which are positioning hole point A, positioning hole point B, positioning hole point C and positioning hole point D.
[0008] The oven with buffer device control switch door system, wherein the left inner side plate is further provided with a micro switch, and the pressing edge of the door lock piece can directly press on the micro switch after the door main body is closed.
[0009] The oven with buffer device control switch door system, wherein the left door fixed seat is connected with the left door fixed support through a left door shaft.
[0010] The oven with buffer device control switch door system, wherein the right door fixed seat is connected with the door shaft support right side through a right door shaft, and the right side of the door main body is further provided with a right door fixed support, and the right door support is fixedly connected with the door shaft support.
[0011] The oven with buffer device control switch door system, wherein the front end of the door main body is further provided with a door handle, and the two ends of the door handle are fixed on the door main body through a handle connecting seat.
[0012] The oven with buffer device control switch door system, wherein the left door fixed seat is provided with a pawl mounting hole for mounting the buffer pawl.
[0013] The utility model has the following advantages and effects:
[0014] 1. The force of opening and closing the door is moderate, and the feeling of opening and closing the door is good, without heavy hitting the table and heavy closing the door to pinch the user, improving the user experience.
[0015] 2. During the door opening and closing process, it is relatively easy to open the door and the door can be stably stopped without external force within the required angle range, which is helpful for users to observe and operate;
[0016] 3. Stable performance, long service life, and will not be affected by high temperature and high humidity;
[0017] 4. Energy saving and environmental protection, no need to use synchronous motor to control door opening and closing, saving energy;
[0018] 5. It is safe to use and will not harm the user due to improper use, thus improving the safety of use. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional diagram of the present utility model.
[0020] Figure 2 It is a cross-sectional view of the present utility model.
[0021] Figure 3 It is a structural diagram of the buffer device in the utility model.
[0022] Figure 4 It is an exploded view of the present utility model.
[0023] Figure 5 It is a schematic diagram of the relative positions of the door lock plate and the guide wheel at four specific points in the utility model.
[0024] Figure 6 It is a schematic diagram of various relevant structural states of the door at position A during the door opening and closing process of the utility model.
[0025] Figure 7 It is a schematic diagram of various relevant structural states of the door at position B during the door opening and closing process of the utility model.
[0026] Figure 8 This utility model Figure 7 Schematic diagram of the relative positions of the middle door lock plate and the buffer pawl.
[0027] Figure 9 It is a schematic diagram of various relevant structural states of the door at position C during the door opening and closing process of the utility model.
[0028] Figure 10 This utility model Figure 9 Schematic diagram of the relative positions of the middle door lock plate and the buffer pawl.
[0029] Figure 11 It is a schematic diagram of various relevant structural states of the door at position D during the door opening and closing process of the utility model.
[0030] Figure 12 This is a schematic diagram of the force applied to the door lock and the buffer pawl when the door is opened.Figure 1 .
[0031] Figure 13 is the force schematic of the door lock piece and the buffer pawl when the door is opened Figure 2 .
[0032] Figure 14 is the force schematic of the door lock piece and the buffer pawl when the door is closed Figure 1 .
[0033] Figure 15 is the force schematic of the door lock piece and the buffer pawl when the door is closed Figure 2 . DETAILED DESCRIPTION
[0034] In order to make the purpose, technical scheme and advantages of the utility model more clear and definite, the utility model is further explained in detail below by referring to the drawings and taking examples.
[0035] As shown in Figures 1-5 The utility model discloses an oven with buffer device control switch door system, it includes: oven main body 100, door main body 14 and buffer device 200, the buffer device 200 includes: spring fixed base 1, door tension spring 2, door lock piece 3, left door fixed base 6, right door fixed base 9, guide wheel 4, guide wheel seat 5 and buffer pawl 7, the door main body 14 is connected respectively on the left inner side plate 18 and right inner side plate 19 of oven main body 100 through left door fixed base 6 and right door fixed base 9, and the lower end of left door fixed base 6 is articulated with the left side of door main body 14, and right door fixed base 9 is articulated with the right side of door main body 14, and spring fixed base 1 is fixed on the left inner side plate 18 of oven main body, and one end of door tension spring 2 is hooked on spring fixed base 1, and the other end of door tension spring 2 is hooked on door lock piece 3, and door lock piece 3 is articulated with door main body with rivet, and guide wheel 4 and guide wheel seat 5 pass through the guide rail hole of door lock piece 3 and are fixed on left door fixed base 6 through screw, and buffer pawl 7 is fixed between left door fixed base 6 and left inner side plate 18, and the inner side of door lock piece 3 is equipped with the ratchet tooth 30 opposite the card position direction of buffer pawl 7.
[0036] The electric oven of the system which has the buffer device to control the oven door to stop automatically at several specific angles in the process of opening and closing the oven door without external force, and the oven door will not automatically close or open after the user releases the oven door in the specific stage, the buffer device uses the force direction and angle change between the spring force, the door self weight, the door lock piece of the guide door movement guide rail to make the interaction resultant force to be zero to balance to control the door to stop at the specific position, and the transmission principle of the ratchet and pawl is used in the specific stage to make the resistance of the door smaller in the opening process, and the resistance is slightly larger in the closing process, so that the door will not be closed with great force to produce a large sound or possibly injure the user's hand, thereby improving the user experience.
[0037] As shown in Figure 4 The oven body of the utility model includes: main body inner cavity 21, left inner side plate 18, right inner side plate 19, shell 22, rear cover 23 and control assembly 24;The left inner side plate 18 and right inner side plate 1 are fixed at the left side and the right side of main body inner cavity 21, the shell 22 is wrapped in main body inner cavity 21, the rear cover 23 is fixed at the back of shell 22, and the control assembly 24 is installed on shell 22.
[0038] In one of the embodiments, as shown in Figure 5 The front end and the rear end of the guide rail hole of the door lock piece 3 are respectively provided with two positioning hole points, which are positioning hole point A, positioning hole point B, positioning hole point C and positioning hole point D.
[0039] As shown in Figures 6-11 The position and state of the door in the process of opening and closing the door are divided into four points (A, B, C, D) and three stages (AB, BC, CD);
[0040] As shown in Figure 6 A point is the position of the completely closed door, and the position needs to ensure that the door lock piece 3 directly presses the micro switch 20, so that the micro switch 20 is connected, and a signal is sent to the control panel of the oven body, and the control panel determines that all functions of the oven are ready after receiving the information that the micro switch 20 is connected, and the oven can work; if the micro switch 20 is not connected, that is, in the disconnected state, the control panel receives the information that the micro switch is disconnected, and the control panel controls the machine to make the heating tube and the motor all be powered off and stop working, so as to ensure the safety of the user.
[0041] As shown in Figure 7 B point is the position of the door opening and the vertical angle being 16 degrees, and the door can be completely stopped at this position.
[0042] As shown in Figure 9C point is the position when the door is opened to 72 degrees with the vertical angle, at which the door can be completely stopped.
[0043] As Figure 11 shown, D point is the position when the door is fully opened (opened to 88 degrees with the vertical angle, the lowest point of the door handle 12 is 10 mm away from the tabletop 2 - the gap makes the door not touch the tabletop after being fully opened, and no sound is made when the door touches the tabletop.
[0044] AB segment: the door opening angle is between 0 and 16 degrees: in this stage, as long as the angle does not reach 16 degrees, the door position is not to B point; the door is automatically closed to ensure that the user releases the door handle 12 at this angle, the door can be automatically closed, the micro switch 20 is connected, and information is sent to the control panel. After the control panel receives the information connected by the micro switch, it is determined that all functions of the machine are ready for operation.
[0045] BC segment: the door is opened between 16 and 72 degrees; and in this range, the door is relatively easy to open and slightly damped when closing; after the user releases the door handle 13 in this segment, the door will not automatically fall or automatically close upwards; to ensure this effect, a buffer pawl 7 is added to adjust the different forces required between opening and closing the door.
[0046] When opening the door, the buffer pawl is subjected to the friction force of the door lock piece ratchet along the outer arc edge of the pawl head, so that the pawl head moves inward, i.e. the opening angle decreases, and the reaction force of the pawl to the door lock piece is relatively small. When opening the door, the hand feels a little bit of friction resistance, so that the door is opened with a certain quality but is relatively easy; the change of the pawl movement state is as follows Figure 12 and 13 shown, the arrow direction is the movement direction of the door lock piece when opening the door.
[0047] As Figure 12 shown, the buffer pawl is subjected to the force F of the door lock piece, F1=FCOSɑ is the component force of the force F, the pawl head rotates inward under the action of the component force, and the movement state is as shown in the right figure; the included angle ɑ decreases, the interference between the pawl and the ratchet of the door lock piece decreases, the friction resistance decreases, the gap d between the pawl head and the ratchet of the door lock piece is very small, i.e. d=-0.13 mm, and there is very slight friction.
[0048] When closing the door, the buffer pawl is subjected to the resistance of the door lock piece ratchet to the pawl head, so that the pawl head moves outward, i.e. the opening angle increases, and the resistance of the pawl head to the ratchet of the door lock piece increases to overcome the large rebound tension of the door spring, so that the door is closed with a slightly strong damping feeling, and the door will not be closed with a loud "bang"; the change of the pawl movement state is as follows Figure 14 and 15 shown, the arrow direction is the movement direction of the door lock piece when opening the door. As Figure 14As shown, the buffer pawl is subjected to the force F of the door lock piece, F1=FCOSɑ is the component force of the force F, the pawl head rotates outward under the action of the component force, and the movement state is as shown in the right drawing; the angle ɑ increases, the interference between the pawl and the ratchet teeth of the door lock piece increases, and the friction resistance increases. Figure 15 As shown, the gap d between the pawl head and the ratchet teeth of the door lock piece is d=-1.6mm, which has a larger damping effect than when the door is opened, and can offset the tension of the door spring to achieve the soft effect when the door is closed.
[0049] CD section: between 72 degrees and 88 degrees of the door opening; if the user releases the door handle 13 when the door position is past the C point and has not reached the D point during the opening process, the door will fall to the D point under the action of gravity.
[0050] In another embodiment, the left inner side plate 18 is also provided with a micro switch 20, and the pressing edge of the door lock piece can directly press on the micro switch 20 after the door body is closed.
[0051] Specifically, the left door fixing seat 6 is connected with the left door fixing support 8 through the left door shaft 15.
[0052] Specifically, the right door fixing seat 9 is connected with the door shaft support 17 on the right side through the right door shaft 16, and the right side of the door body is also fixedly provided with a right door fixing support 10, and the right side door support is tightly fixed by the door shaft support 17.
[0053] In one embodiment, the front upper end of the door body 14 is also provided with a door handle 12, and the two ends of the door handle 12 are fixed on the door body 14 through a handle connecting seat 13.
[0054] Specifically, the left door fixing seat 6 is provided with a pawl mounting hole 11 for mounting the buffer pawl 7.
[0055] The utility model has the following advantages and effects:
[0056] 1. The force for opening and closing the door is moderate, the feeling of opening and closing the door is good, heavy hitting on the table and closing the door with great force to pinch the user do not occur, and user experience is improved;
[0057] 2. In the process of opening and closing the door, the door is relatively easy to open, and the door can be stably stopped without external force in the required angle range, which is helpful for the user to observe and operate;
[0058] 3. Stable performance, long service life, and no influence of high temperature and high humidity on use;
[0059] 4. Energy saving and environmental protection, synchronous motor is not needed to control the door opening and closing, and energy is saved;
[0060] 5. Safe to use, will not harm the user due to improper use of the user, improve the safety of use.
[0061] The above are preferred embodiments of the present application, and of course cannot be used to limit the scope of the present application, it should be noted that for those skilled in the art, without creative labor to modify or equivalent replacement of the present application technical scheme, do not deviate from the scope of the present application technical scheme protection.
Claims
1. An oven having a buffer device controlling a switch door system, characterized in that, The application relates to an oven door buffer device. The oven door buffer device comprises a spring fixing base (1), a door tension spring (2), a door lock piece (3), a left door fixing base (6), a right door fixing base (9), a guide wheel (4), a guide wheel base (5) and a buffer pawl (7); the door body (14) is connected to the left inner side plate (18) and the right inner side plate (19) of the oven body (100) through the left door fixing base (6) and the right door fixing base (9) respectively; the lower end of the left door fixing base (6) is hinged to the left side of the door body (14); the right door fixing base (9) is hinged to the right side of the door body (14); the spring fixing base (1) is fixed to the left inner side plate (18) of the oven body; one end of the door tension spring (2) is hooked to the spring fixing base (1), and the other end of the door tension spring (2) is hooked to the door lock piece (3); the door lock piece (3) is hinged to the door body through a rivet; the guide wheel (4) and the guide wheel base (5) pass through the guide rail hole of the door lock piece (3) and are fixed to the left door fixing base (6) through screws; the buffer pawl (7) is fixed between the left door fixing base (6) and the left inner side plate (18); the inner side of the door lock piece (3) is provided with a ratchet (30) which is opposite to the clamping position direction of the buffer pawl (7). The front end and the rear end of the guide rail hole of the door lock piece (3) are respectively provided with two positioning hole points, which are positioning hole point A, positioning hole point B, positioning hole point C and positioning hole point D.
2. The oven with a control of a switching door system by means of a buffer device according to claim 1, characterized in that, The left inner side plate (18) is further provided with a micro switch (20), and the pressing edge of the door lock piece can directly press the micro switch (20) after the door body is closed.
3. The oven with a control of a switching door system by means of a buffer device according to claim 2, characterized in that, The left door fixing base (6) is connected to the left door fixing support (8) through a left door shaft (15).
4. The oven with a control of a switching door system by means of a buffer device according to claim 3, characterized in that, The right door fixing base (9) is connected to the right side of the door shaft support (17) through a right door shaft (16), and the right side of the door body is further provided with a right door fixing support (10) which is fixed and pressed by the door shaft support (17).
5. The oven with a control of a switching door system by means of a buffer device according to claim 4, characterized in that, The front upper end of the door body (14) is further provided with a door handle (12), and the two ends of the door handle (12) are fixed to the door body (14) through a handle connecting base (13).
6. The oven with a control of a switching door system by means of a buffer device according to claim 5, characterized in that, The left door fixing base (6) is provided with a pawl mounting hole (11) for mounting the buffer pawl (7).
7. The oven with a control of a switching door system by means of a buffer device according to claim 6, characterized in that,