Electric appliance door closer with locking function

Abstract

An electric appliance door closer with a locking function comprises a main machine and a connecting rod, the connecting rod rotates around a hinge point on the main machine to achieve opening and closing of an electric appliance box door, an installation groove is formed in the main machine, a linkage arm is installed in the installation groove, the front end of the linkage arm is hinged to the connecting rod, and a tension spring is installed at the rear end of the linkage arm and connected with the main machine. The tension spring generates tension to pull the connecting rod to swing towards the closing direction all the time through the linkage arm; a locking block is further installed in the installation groove through a locking shaft in a swing type hinged mode, a locking column is arranged on the locking block, and a reset device is arranged on the locking block to push the locking block to swing towards the connecting rod all the time, so that the locking column is buckled into a locking groove formed in the connecting rod, and the closing state of the connecting rod is locked. The door closer has the advantages that a locking function is added to the door closer, so that an electric appliance door can be firmly locked in a high-temperature working environment, and the door is prevented from being accidentally opened due to external force or vibration in the using process.

Description

TECHNICAL FIELD

[0001] The utility model relates to a hardware fitting, concretely is an electric appliance door closer with locking function. BACKGROUND

[0002] In modern household appliances, especially in electric ovens, microwave ovens, pizza ovens and other equipment, the door closing function is crucial for the normal use and energy efficiency of the equipment. In order to ensure that these electrical appliances can maintain the temperature and humidity inside when working, many devices are designed with automatically closing door devices, i.e. door closers. The function of the door closer is to automatically close the door to achieve a sealed state when the electrical appliance door is opened, thereby avoiding heat leakage, improving energy efficiency and ensuring equipment safety.

[0003] However, the existing door closers generally have a significant defect, i.e. lack of locking function. During use, especially in high-temperature environments such as electric ovens, although the door closer can help the device door to remain closed, at high temperatures, the door may accidentally open due to external force or vibration, resulting in heat leakage. This not only affects the heating efficiency of the oven, but also may affect the baking effect, and due to heat leakage, it may increase energy consumption and affect the energy saving of the equipment.

[0004] In addition, in some application scenarios, the opening and closing operation of the door closer may not fully meet the special needs in high-temperature environments. For example, when the electric oven is working, the thermal expansion of the door may cause the original door closer to be unable to provide sufficient closing force, resulting in the door not being completely closed, causing the performance of the equipment to decline. In addition, the existing door closer design lacks certain adjustability and adaptability, making it difficult to adapt to the design and use requirements of different equipment doors.

[0005] Therefore, the door closer in the prior art has obvious deficiencies in locking function, heat sealing and long-term reliability. Especially in heat-sensitive equipment such as electric ovens, the lack of effective locking mechanism makes these problems more serious, so it is necessary to make further improvements. SUMMARY

[0006] The utility model aims at overcoming the shortcomings of the prior art, providing an electric appliance door closer with locking function, which has simple structure and is easy to use, can prevent the door from accidentally opening through the locking mechanism while ensuring the closing of the door, ensures the heat sealing of the equipment in high-temperature environments, improves the use efficiency and reduces energy waste.

[0007] The utility model discloses a kind of electric appliance door closers with locking function, it includes host computer and movable hingedly mounted link, link rotates around the hinged point on host computer, realize the opening and closing of electric appliance box door, the installation slot is provided on the host computer, the installation slot is installed with linkage arm, the front end of linkage arm is hinged with link, the rear end of linkage arm is installed with pull spring and is connected with host computer, pull spring generates pulling force and always swings link to closing direction by linkage arm pulling link.

[0008] The installation slot is also hinged with lock block by locking shaft swing, lock block is provided with lock post, reset device is provided on lock block and always swings lock block to link direction, so that lock post is buckled into the locking slot provided on link, and the closing state of link is locked.

[0009] Further, the tail of the linkage arm is provided with a guide shaft, and correspondingly, the host computer is provided with a guide slot, and the guide shaft is inserted into the guide slot at both ends and slides in the guide slot.

[0010] Further, the linkage arm is internally hollowly provided with a containing groove, and the main body of the linkage arm is provided with an emptying groove, and the locking shaft passes through the emptying groove and is connected with the host computer at both ends.

[0011] Further, the lock post is externally provided with a roller, and the outer contour of the roller extends out of the outer contour of the lock block.

[0012] Further, the reset device is a push spring, the push spring is sleeved on a supporting frame, one end of the supporting frame is inserted into a guide hole in the linkage arm, and the other end is inserted into the lock block, one end of the push spring is pressed outside the guide hole, and the other end of the push spring is pressed on the lock block, and the lock block is always swung to the link direction.

[0013] Further, the reset device is a torsion spring sleeved on the locking shaft, and the two supporting legs of the torsion spring are supported on the host computer and the lock block respectively, and the lock block is always swung to the link direction.

[0014] The utility model discloses the beneficial effect is: 1, simple structure, low in production cost, improve market competitiveness.

[0015] 2, the utility model discloses by increasing locking function in door closer, ensure that electric appliance door can be firmly locked under high temperature working environment, prevent door from accidentally opening in the use process due to external force or vibration. This innovation effectively avoids the leakage of heat, especially in electric oven, microwave oven and other equipment, can greatly improve the energy efficiency of equipment, and ensure that the heating effect of equipment is always consistent.

[0016] 3. The utility model discloses a locking function of the door closer is realized through the structure of setting lock block, lock post and locking groove. When the connecting rod is in the closed state, the lock post is clamped into the locking groove on the connecting rod, and the equipment door is always in the sealed state, and will not be loosened or opened due to external factors, thereby a stable and reliable closing and locking mode is provided. This design avoids the shortcomings of lacking locking mechanism in the prior art, and ensures the safety and sealing of the equipment in a high-temperature environment.

[0017] 4. The utility model discloses a guide shaft is set up on the linkage arm, and the guide groove is set up on the host, and the cooperation sliding of guide shaft and guide groove ensures the stability of linkage arm in the movement process. This design can effectively avoid the jam or instability of the linkage arm in the movement process, make the opening and closing process of the door closer more smooth, reduce the abrasion of mechanical parts, and prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the structure schematic diagram of the door closer in the utility model and is in the closed state.

[0019] Figure 2 It is the structure sectional view of the door closer in the utility model and is in the closed state.

[0020] Figure 3 It is the enlarged view of A part structure in the utility model. Figure 2

[0021] Figure 4 It is the structure schematic diagram of the door closer in the utility model and is in the open state.

[0022] Figure 5 、 6 It is the structure exploded view of the utility model.

[0023] Figure 7 It is the structure schematic diagram of the lock block in the utility model. DETAILED DESCRIPTION

[0024] The utility model discloses a kind of electric appliance door closers with locking function, it includes host 1 and movable hingedly installed connecting rod 2 on it, connecting rod 2 rotates around the hinging point on host 1, realizes the opening and closing of electric appliance box door, the host 1 is provided with installation slot 3, the installation slot 3 is installed with linkage arm 4, the front end of linkage arm 4 is hinged with connecting rod 2, linkage arm 4 rear end is installed with tension spring 5 and host 1 is connected, tension spring 5 generates pulling force and always swings connecting rod 2 to closing direction by linkage arm 4 pull;

[0025] ​The mounting groove 3 is also swingingly hinged with a lock block 7 through a locking shaft 6, the lock block 7 is provided with a locking column 8, and the lock block 7 is provided with a reset device to push the lock block 7 to swing towards the connecting rod 2 all the time, so that the locking column 8 is buckled into the locking groove 21 provided on the connecting rod 2 to lock the closing state of the connecting rod 2.

[0026] In one of the embodiments, the tail of the connecting arm 4 is provided with a guide shaft 41, and correspondingly, the main machine 1 is provided with a guide groove 11, the both ends of the guide shaft 41 are inserted into the guide groove 11 to slide, and the tension spring 5 is connected to the guide shaft 41.

[0027] In one of the embodiments, the inside of the connecting arm 4 is hollowly provided with a containing groove 42, the main body of the connecting arm 4 is provided with an emptying groove 43, and the both ends of the locking shaft 6 pass through the emptying groove 43 to be connected to the main machine 1.

[0028] In one of the embodiments, the locking column 8 is externally provided with a roller 81, and the outer contour of the roller 81 extends out of the outer contour of the lock block 7.

[0029] In one of the embodiments, the reset device is a push spring 9, the push spring 9 is sleeved on a supporting frame 91, one end of the supporting frame 91 is inserted into a guide hole 44 in the connecting arm 4, and the other end is inserted into the lock block 7, one end of the push spring 9 is pressed against the outside of the guide hole 44, and the other end of the push spring 9 is pressed against the lock block 7 to push the lock block 7 to swing towards the connecting rod 2 all the time.

[0030] In one of the embodiments, the reset device is a torsion spring sleeved on the locking shaft 6, and the two supporting feet of the torsion spring are supported on the main machine 1 and the lock block 7 respectively to push the lock block 7 to swing towards the connecting rod 2 all the time.

[0031] Working principle: in the case, the main machine 1 of the electric appliance door closer is provided with a mounting groove 3, and the connecting arm 4 is mounted in the mounting groove 3. The front end of the connecting arm is connected with the swingingly hinged connecting rod 2, and the connecting rod rotates around the hinge point on the main machine. When the electric appliance door needs to be closed, the pulling force generated by the tension spring 5 acts on the connecting rod 2 through the connecting arm 4 to make it swing towards the closing direction, and finally the closing of the electric appliance door is completed.

[0032] Among them, the tension spring 5 provides a continuous closing force by acting on the connecting arm 4, ensuring that the electric appliance door can always be pulled back to the closed state. This design can make the electric appliance door have the function of automatic reset closing, and in the later use process, it keeps the door stable and closed, avoids accidental opening caused by external force or vibration, and effectively prevents heat leakage.

[0033] Further, when the appliance door is fully closed, a locking block 7 is installed in the mounting slot 3 through a swing-type hinged mounting with the locking shaft 6. The locking block 7 is provided with a locking column 8, which is clamped into the locking slot 21 on the connecting rod 2, completing the locking. The locking block 7 is also provided with a reset device such as a push spring or a torsional spring, which can always push the locking block 7 to swing towards the connecting rod 2, ensuring that the locking column 8 is clamped into the locking slot, thereby realizing the locking function.

[0034] This locking mechanism ensures that the appliance door can be firmly locked in a high-temperature environment, preventing the door from loosening or accidentally opening due to vibration or external force. The close fit of the locking column 8 and the locking slot 21 provides reliable protection, avoiding the heat leakage problem caused by the lack of locking function in traditional door closers, thereby improving the sealing performance and energy efficiency of the equipment.

[0035] In order to ensure that the locking block 7 can automatically reset and lock after each closure of the appliance door, the reset device is designed through a push spring 9 or a torsional spring. The push spring 9 is installed on the support frame 91 and connected with the locking block 7, which always pushes the locking block 7 to swing towards the connecting rod 2 through the elastic force, ensuring that the locking block 7 can automatically return to the locked position after each closure.

[0036] The reset device ensures that the locking block can reliably return to the locked position after each use without external intervention, thereby improving the automation level of the door closer. This design can reduce the operational burden of users, while ensuring the stability and reliability of the door closer in long-term use.

[0037] Further, the tail of the connecting arm 4 is provided with a guide shaft 41, which cooperates with the guide slot 11 on the main machine 1. The guide shaft 41 is inserted at both ends of the guide slot and slides, ensuring the stability and smoothness of the connecting arm during movement. At the same time, the tension spring 5 is connected with the guide shaft 41, ensuring that the tension is evenly distributed during the closing process, further optimizing the closing effect of the equipment.

[0038] This guide system effectively avoids the situation that the connecting arm is stuck or unstable during movement, thereby reducing mechanical wear and tear and prolonging the service life of the door closer. In addition, smooth movement makes the closing process more smooth, reducing noise and vibration and improving user experience.

[0039] Further, a roller 81 is installed outside the locking column 8, and the outer contour of the roller extends beyond the outer contour of the locking block 7. This roller helps to reduce friction during the locking process, making the locking column 8 more smoothly clamped into the locking slot 21 on the connecting rod 2, avoiding the jamming phenomenon.

[0040] The design of this roller effectively reduces the friction during the locking process, making the locking process more smooth and stable, reducing the wear and tear of mechanical parts, and ensuring the long-term reliability of the locking function.

[0041] In summary, the door closer with locking function of the electric appliance can effectively solve the problem of lack of locking function and inability to prevent heat leakage of the door closer in the prior art through the innovative locking mechanism, reset device, guide system and roller design. By ensuring the stable closure and locking of the electric appliance door, the leakage of heat is avoided, the energy efficiency of the equipment is improved, and the service life is prolonged. At the same time, the design of the door closer also has strong adaptability and can be widely applied to various electric appliance equipment.

[0042] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model. These changes and improvements all fall within the scope of the claimed utility model.

Claims

1. An electrical door closer with a locking function, comprising a main unit (1) and a connecting rod (2) movably hinged thereon, the connecting rod (2) rotating around a hinge point on the main unit (1) to realize the opening and closing of the electrical box door, characterized in that: The host (1) is provided with a mounting slot (3), and a connecting arm (4) is installed in the mounting slot (3). The front end of the connecting arm (4) is hinged to the connecting rod (2), and the rear end of the connecting arm (4) is provided with a tension spring (5) connected to the host (1). The tension spring (5) generates a pulling force that pulls the connecting rod (2) through the connecting arm (4) to swing in the closing direction. The mounting groove (3) is also fitted with a locking block (7) by a swing hinge through a locking shaft (6). The locking block (7) is provided with a locking pin (8). The locking block (7) is provided with a reset device that pushes the locking block (7) to swing in the direction of the connecting rod (2) so that the locking pin (8) is engaged in the locking groove (21) provided on the connecting rod (2) to lock the connecting rod (2) in the closed state.

2. An electrical door closer with locking function according to claim 1, characterized in that: The tail of the linkage arm (4) is provided with a guide shaft (41), and correspondingly, the host (1) is provided with a guide groove (11). The two ends of the guide shaft (41) slide in the guide groove (11), and the tension spring (5) is connected to the guide shaft (41).

3. An electrical door closer with locking function according to claim 1, characterized in that: The connecting arm (4) is hollow inside and has a receiving groove (42). The main body of the connecting arm (4) is provided with a clearance groove (43). The locking shaft (6) passes through the clearance groove (43) and is connected to the main unit (1).

4. An electrical door closer with locking function according to claim 1, characterized in that: The locking pin (8) is equipped with a roller (81), and the outer contour of the roller (81) extends out of the outer contour of the locking block (7).

5. An electrical door closer with locking function according to claim 1, characterized in that: The reset device is a push spring (9), which is mounted on a support frame (91). One end of the support frame (91) is inserted into a guide hole (44) located in the connecting arm (4), and the other end is inserted into a locking block (7). One end of the push spring (9) presses against the outside of the guide hole (44), and the other end of the push spring (9) presses against the locking block (7), pushing the locking block (7) to swing in the direction of the connecting rod (2).

6. An electrical door closer with locking function according to claim 1, characterized in that: The reset device is a torsion spring mounted on the locking shaft (6). The two supporting legs of the torsion spring are respectively supported on the main unit (1) and the locking block (7), pushing the locking block (7) to swing in the direction of the connecting rod (2).

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