A false touch prevention safety lock mechanism for an oven door

Abstract

The utility model relates to oven electrical equipment technical field, especially oven door body with prevent false touch safety lock mechanism, including mechanism body, mechanism body includes locking main body, and locking main body whole is L type, locking main body upper edge is provided with a plurality of screw fastener for positioning installation, and inside is formed with the accommodation cavity, locking main body upper one end swing assembly has manual button, and the accommodation cavity is detachably assembled with the linkage lock core assembly and is in abutment with manual button, locking main body upper other end integral moulding has the connecting plate and the boss, and the mounting hole is opened to the connecting plate symmetry, manual button is pressed, and the linkage lock core assembly is driven to pass through the boss and is outwardly extended, and the cooperation is formed with the lock catch of oven door frame, realizes the anti -false touch unlocking of oven door body, the utility model aims at realizing the anti -false touch function through the structural design, avoids the accidental opening of door body in the oven working process, and improves the security and reliability in the oven use process.

Description

Technical Field

[0001] This utility model relates to the field of oven electrical equipment technology, and in particular to a safety lock mechanism for preventing accidental activation of oven doors. Background Technology

[0002] As a commonly used heating and cooking appliance, ovens generate high temperatures within their cavity during operation, making the reliability of their door locks directly related to user safety. Currently, some oven door locking mechanisms on the market suffer from problems such as unreasonable structural design and poor anti-accidental activation: On the one hand, existing locking mechanisms often use simple snap-fit ​​structures, which are prone to accidental unlocking due to vibration, collisions, or accidental activation by children, causing high-temperature gas leakage and potentially leading to burns or other safety accidents; on the other hand, some safety lock mechanisms have cumbersome unlocking operations, insufficient reset sensitivity, and poor stability of the locked state, making them prone to jamming or failure after long-term use, thus failing to meet usage requirements. Utility Model Content

[0003] To address some of the problems existing in the prior art, this utility model provides an anti-accidental touch safety lock mechanism for oven doors. This mechanism aims to achieve the anti-accidental touch function through structural design, preventing the oven door from being accidentally opened during operation and improving the safety and reliability of the oven during use.

[0004] To achieve the above objectives, this utility model provides a safety lock mechanism for oven doors to prevent accidental unlocking, comprising a mechanism body, the mechanism body including a locking body, the locking body being L-shaped in overall shape; the upper edge of the locking body is provided with several screw fasteners for positioning and installation, and an internal receiving cavity is formed; a manual button is movably mounted on one end of the locking body, and a linkage lock cylinder assembly is detachably mounted in the receiving cavity and abuts against the manual button; the other end of the locking body is integrally formed with a connecting plate and a protrusion, and mounting holes are symmetrically opened on the connecting plate; when the manual button is pressed, it pushes the linkage lock cylinder assembly through the protrusion and outwards, cooperating with a pre-set latch on the oven door frame to achieve accidental unlocking of the oven door, preventing the door from accidentally opening while the oven is working.

[0005] In operation, the locking body is quickly positioned and installed on the oven door through the mounting hole. The protrusion and the pre-set positioning groove on the oven door form an interference fit. In the initial state, the locking rod in the linkage lock cylinder assembly is in the initial retracted and reset position under the action of the return spring, and the oven door remains locked. When unlocking is required, the manual button is pressed. The grid-like anti-slip texture on its surface increases the operating friction. The manual button moves linearly in the positioning groove in the inclined assembly hole of the locking body through the limiting protrusion on the outer periphery. The travel limit block restricts the pressing stroke to avoid excessive pressing. The manual button pushes the connecting push in the linkage lock cylinder assembly. The block rotates on the connecting rod, and the connecting push block pushes the locking rod. The locking rod extends outward under the guidance of the guide groove connected to the receiving cavity inside the protrusion, and cooperates with the pre-set latch on the oven door frame to realize the oven door's anti-accidental unlocking. After unlocking, the manual button is released, and the two ends of the return spring elastically abut against the pads on the locking rod and the inner wall of the locking body, respectively. Under the elastic force of the return spring, the locking rod quickly retracts and returns to its initial position along the guide groove. The connecting push block resets synchronously with the locking rod, and the manual button also returns to its initial state, completing one unlocking and reset cycle, effectively preventing the oven door from opening accidentally when it is working.

[0006] The beneficial effects of this utility model are as follows: The locking body adopts an L-shaped structure and is designed with screw fasteners and mounting holes, which can achieve quick positioning and installation with the oven door. The interference fit between the protrusion and the pre-set positioning groove of the oven door further improves the assembly stability and prevents the mechanism from loosening during oven operation. The linkage lock cylinder assembly consists of a connecting rod, a connecting push block, and a locking rod. With the guiding action of the guide groove and the elastic reset function of the return spring, the unlocking operation is smooth and the reset is fast and sensitive, effectively preventing the locking rod from jamming. The manual button is installed with an inclined mounting hole. Through the interlocking action of the limiting protrusion and the positioning slide groove, the rotation of the button is restricted and the linear movement accuracy is ensured. The surface grid-like anti-slip texture increases the operating friction. The travel limit block precisely controls the pressing stroke, improving ease of operation and effectively preventing damage to components from excessive pressing. The diameter difference design at both ends of the guide groove, along with the cooperation of the return spring and washer, and the alignment of the locking rod and the return spring axis, enhances the stability of the locking rod's movement trajectory, ensuring that the locking rod can quickly retract and reset after the button is released, and that the reset process is smooth and without jamming. The overall mechanism has a simple structure and is detachable and easy to assemble, facilitating production and subsequent maintenance. The manual pressing unlock design effectively prevents accidental opening of the oven door during operation, fundamentally reducing the safety hazards caused by high temperature overflow. At the same time, it balances ease of operation and structural reliability, significantly improving the safety of oven use and the user experience.

[0007] As a further improvement to this utility model, in order to enhance the smoothness of unlocking and the sensitivity of reset, and improve the convenience of operation and the reliability of repeated use, the linkage lock cylinder assembly includes a connecting rod, a connecting push block, and a locking rod; the connecting rod is fixedly connected to the inner wall of the locking body, and the connecting push block is fitted onto the connecting rod; a guide groove is provided in the protrusion, and the guide groove communicates with the receiving cavity; one end of the locking rod abuts against the connecting push block, and a reset spring is fitted on the other end of the locking rod and extends outward through the guide groove; when the manual button is pressed, it drives the connecting push block to rotate on the connecting rod, thereby pushing the locking rod through the guide groove and extending outward to unlock the oven door; when the manual button is released, the locking rod quickly retracts and resets to its initial position through the reset spring.

[0008] As a further improvement of this utility model, in order to avoid deviation of the movement trajectory of the manual button, improve transmission accuracy, and ensure operational stability, an inclined mounting hole is integrally formed on one end of the locking body corresponding to the manual button. The inclined mounting hole has an inclination angle of 10° to 20°. Several positioning grooves are circumferentially opened on the inner wall of the inclined mounting hole, and several limiting protrusions are provided on the outer circumferential surface of the manual button and are adapted to the positioning grooves. The manual button is embedded in the positioning groove through the limiting protrusions and forms a snap-fit ​​engagement. The manual button can move linearly in the inclined mounting hole, and the rotation of the manual button is restricted.

[0009] As a further improvement of this utility model, in order to increase the operating friction and physically limit the pressing depth to prevent excessive operation from causing damage to the mechanism, improve operating safety and extend the service life of the mechanism, the pressing surface of the manual button is provided with uniformly distributed anti-slip texture, the anti-slip texture is a grid-like stripe with a stripe depth of 0.5-1mm; the manual button is also integrally formed with a travel limit block.

[0010] As a further improvement of this utility model, in order to ensure the stability of the locking rod's movement trajectory and the reset effect, the diameter of the guide groove at the end near the receiving cavity is larger than the diameter at the end away from the receiving cavity, and it is adapted to the outer diameter of the reset spring; a washer is also fixedly sleeved on the locking rod, and the two ends of the reset spring elastically abut against the washer and the inner wall of the locking body, respectively; the axis of the locking rod coincides with the axis of the reset spring.

[0011] As a further improvement of this utility model, in order to enhance the adaptability and assembly efficiency of the mechanism and ensure its long-term stability under high temperature and vibration environment, the locking body is quickly positioned and installed with the oven door through the mounting hole, and the protrusion forms an interference fit with the positioning groove preset on the oven door. Attached Figure Description

[0012] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings:

[0013] Figure 1 This is the front view of the present invention.

[0014] Figure 2 This is a right-side view of the present invention.

[0015] Figure 3 This is a top view of the present invention.

[0016] Figure 4 For the present utility model Figure 2 Sectional view at point AA.

[0017] The components include: 1. Locking body; 2. Screw fastener; 3. Connecting plate; 4. Protrusion; 5. Manual button; 6. Mounting hole; 7. Linked lock cylinder assembly; 8. Receiving cavity; 9. Connecting light rod; 10. Connecting push block; 11. Guide groove; 12. Locking rod; 13. Return spring; 14. Push rod; 15. Travel limit block; and 16. Anti-slip texture. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions in this utility model, the following description is provided in conjunction with the appendix. Figure 1-4 The present invention will be further described below. The following embodiments are only used to illustrate the technical solution of the present invention more clearly, and should not be used to limit the protection scope of the present invention.

[0019] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0020] like Figure 1-4The oven door safety lock mechanism shown includes a mechanism body, which includes a locking body 1, which is generally L-shaped. Several screw fasteners 2 are provided on the upper edge of the locking body 1 for positioning and installation, and a receiving cavity 8 is formed inside. A manual button 5 is movably mounted on one end of the locking body 1, and a linkage lock cylinder assembly 7 is detachably mounted in the receiving cavity 8 and abuts against the manual button 5. A connecting plate 3 and a protrusion 4 are integrally formed on the other end of the locking body 1, and mounting holes 6 are symmetrically provided on the connecting plate 3. When the manual button 5 is pressed, it pushes the linkage lock cylinder assembly 7 through the protrusion 4 and outwards, forming a pre-set latch on the oven door frame. In conjunction with the oven door, the system prevents accidental unlocking and avoids accidental opening of the door while the oven is operating. The linkage lock cylinder assembly 7 includes a connecting rod 9, a connecting push block 10, and a locking rod 12. The connecting rod 9 is fixedly connected to the inner wall of the locking body 1, and the connecting push block 10 is fitted onto the connecting rod 9. A guide groove 11 is provided in the protrusion 4, and the guide groove 11 communicates with the receiving cavity 8. One end of the locking rod 12 abuts against the connecting push block 10, and a return spring 13 is fitted on the other end of the locking rod 12 and extends outward through the guide groove 11. When the manual button 5 is pressed, it drives the connecting push block 10 to rotate on the connecting rod 9, thereby pushing the locking rod 12 through the guide groove 11. 1. Extend outwards to unlock the oven door; when the manual button 5 is released, the locking rod 12 quickly retracts and returns to its initial position via the return spring 13; an inclined mounting hole is integrally formed on one end of the locking body 1 corresponding to the manual button 5, the inclination angle of which is 10° to 20°; several positioning grooves are circumferentially formed on the inner wall of the inclined mounting hole, and several limiting protrusions are provided on the outer circumferential surface of the manual button 5 to fit the positioning grooves; the manual button 5 is embedded in the positioning grooves through the limiting protrusions to form a snap-fit ​​engagement, the manual button 5 can move linearly within the inclined mounting hole, and the manual button 5 is restricted from rotation; the manual button 5... The surface is provided with uniformly distributed anti-slip textures 16, which are grid-like stripes with a stripe depth of 0.5-1mm; the manual button 5 is also integrally formed with a travel limit block 15; the diameter of the guide groove 11 near the receiving cavity 8 is larger than the diameter of the end away from the receiving cavity 8, and it is adapted to the outer diameter of the return spring 13; a gasket is also fixedly sleeved on the locking rod 12, and the two ends of the return spring 13 elastically abut against the gasket and the inner wall of the locking body 1 respectively; the axis of the locking rod 12 coincides with the axis of the return spring 13; the locking body 1 is quickly positioned and installed with the oven door through the mounting hole 6, and the protrusion 4 forms an interference fit with the pre-set positioning groove of the oven door.

[0021] When this utility model is in operation, the locking body 1 is quickly positioned and installed with the oven door through the mounting hole 6. The protrusion 4 and the pre-set positioning groove of the oven door form an interference fit. In the initial state, the locking rod 12 in the linkage lock cylinder assembly 7 is in the initial position of retraction and reset under the action of the return spring 13, and the oven door remains locked. When unlocking is required, the manual button 5 is pressed. The grid-like anti-slip texture 16 on its surface increases the operating friction. The manual button 5 moves linearly in the positioning groove in the inclined assembly hole of the locking body 1 through the limiting protrusion on the outer periphery. The travel limit block 15 limits the pressing travel to avoid excessive pressing. The manual button 5 pushes the connecting push block 10 in the linkage lock cylinder assembly 7 in the connecting light. Rotating the lever 9 connects to the push block 10, which in turn pushes the locking lever 12. The locking lever 12 extends outward under the guidance of the guide groove 11, which is connected to the receiving cavity 8 within the protrusion 4, and engages with the pre-set latch on the oven door frame to prevent accidental unlocking of the oven door. After unlocking, releasing the manual button 5 causes the two ends of the return spring 13 to elastically abut against the pads on the locking lever 12 and the inner wall of the locking body 1, respectively. Under the elastic force of the return spring 13, the locking lever 12 quickly retracts and returns to its initial position along the guide groove 11. The push block 10 returns to its initial position synchronously with the locking lever 12, and the manual button 5 also returns to its initial state, completing one unlocking and reset cycle, effectively preventing the oven door from opening accidentally during operation.

[0022] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A safety lock mechanism for preventing accidental activation of an oven door, comprising a mechanism body, characterized in that: The mechanism body includes a locking body (1), which is L-shaped in general. Several screw fasteners (2) are provided on the upper edge of the locking body (1) for positioning and installation, and a receiving cavity (8) is formed inside. A manual button (5) is movably mounted on one end of the locking body (1), and a linkage lock cylinder assembly (7) is detachably mounted in the receiving cavity (8) and abuts against the manual button (5). A connecting plate (3) and a protrusion (4) are integrally formed on the other end of the locking body (1), and mounting holes (6) are symmetrically opened on the connecting plate (3). When the manual button (5) is pressed, the linkage lock cylinder assembly (7) is pushed through the protrusion (4) and extends outward to cooperate with the lock buckle preset on the oven door frame, so as to realize the anti-accidental unlocking of the oven door and prevent the door from being opened accidentally when the oven is working.

2. The oven door anti-accidental touch safety lock mechanism according to claim 1, characterized in that: The linkage lock cylinder assembly (7) includes a connecting rod (9), a connecting push block (10), and a locking rod (12); the connecting rod (9) is fixedly connected to the inner wall of the locking body (1), and the connecting push block (10) is fitted onto the connecting rod (9); a guide groove (11) is provided in the protrusion (4), and the guide groove (11) is connected to the receiving cavity (8); one end of the locking rod (12) abuts against the connecting push block (10), and a return spring (13) is fitted on the other end of the locking rod (12) and extends outward through the guide groove (11); when the manual button (5) is pressed, the connecting push block (10) is driven to rotate on the connecting rod (9), thereby pushing the locking rod (12) through the guide groove (11) and outward to unlock the oven door; when the manual button (5) is released, the locking rod (12) is quickly retracted and reset to the initial position by the return spring (13).

3. The oven door anti-accidental touch safety lock mechanism according to claim 2, characterized in that: The locking body (1) has an integrally formed inclined mounting hole at one end corresponding to the manual button (5), the inclined mounting hole having an inclination angle of 10° to 20°; the inner wall of the inclined mounting hole is provided with several positioning grooves in the circumferential direction, and the outer circumferential surface of the manual button (5) is provided with several limiting protrusions that are adapted to the positioning grooves; the manual button (5) is embedded in the positioning groove through the limiting protrusions and forms a snap-fit ​​engagement, the manual button (5) can move linearly in the inclined mounting hole, and the manual button (5) is restricted from rotating.

4. The oven door anti-accidental contact safety lock mechanism according to claim 3, characterized in that: The pressing surface of the manual button (5) is provided with uniformly distributed anti-slip texture (16), the anti-slip texture is a grid pattern with a stripe depth of 0.5 to 1 mm; the manual button (5) is also integrally formed with a travel limit block (15).

5. The oven door anti-accidental contact safety lock mechanism according to claim 2, characterized in that: The diameter of the guide groove (11) near the receiving cavity (8) is larger than the diameter of the end away from the receiving cavity (8), and it is adapted to the outer diameter of the return spring (13); a gasket is also fixedly sleeved on the locking rod (12), and the two ends of the return spring (13) elastically abut against the gasket and the inner wall of the locking body (1) respectively; the axis of the locking rod (12) coincides with the axis of the return spring (13).

6. The oven door anti-accidental touch safety lock mechanism according to claim 1, characterized in that: The locking body (1) is quickly positioned and installed with the oven door through the mounting hole (6), and the protrusion (4) forms an interference fit with the positioning groove of the oven door.

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