Automatic door closer for electric appliance box door
By designing an automatic door closer for the oven cabinet, utilizing a guide plate, hook plate, and reset spring structure, the problem of uncontrolled oven door descent was solved, achieving automatic reset and angle limitation, thus improving the safety and stability of the oven.
Patent Information
- Application Number
- CN202520161285.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-01-23
AI Technical Summary
Existing oven doors lack an auxiliary reset function, causing the door to fall uncontrollably, generating noise, damaging connecting parts, and affecting user experience and safety.
Design an automatic door closer for an appliance cabinet, comprising a guide plate, a hook plate, a reset spring, and a limit post structure, to achieve automatic reset and angle limitation of the oven door, ensuring sealing and stability.
Automatic oven door reset improves sealing and safety, prevents heat leakage, extends service life, and reduces maintenance costs.
Smart Images
Figure CN223952492U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hardware fitting, concretely is an automatic door closer of electric appliance box door. BACKGROUND
[0002] With the popularity and continuous progress of the oven, the performance requirements of the oven door in the modern kitchen equipment are also constantly improving. Especially in oven products, the design of the door body directly affects the use safety of the product and the operation experience of the user. However, most of the oven doors on the market still have some obvious technical defects, especially in the opening and closing process of the door body, these problems have become the most common problem in user feedback. Specifically, the oven door on the market currently lacks an auxiliary reset function, when the user opens the oven door, the door body will often rotate freely due to gravity, causing the door panel to fall uncontrollably. Such problems mainly manifest in the following aspects:
[0003] 1. The door body falls under gravity, causing noise and instability. Since the door panel of the oven door is relatively heavy and often does not have an effective reset device, the oven door will often fall quickly by relying on its own gravity after being opened. This uncontrollable door body falling often produces a lot of noise, not only affecting the use environment of the kitchen, but also making the user feel inconvenient and unsafe when operating.
[0004] 2. The connecting parts or door body structure of the door panel are easily damaged. During the falling process of the oven door, the connecting parts (such as hinges, connecting rods, etc.) of the door body and the box body need to bear a large impact force. After a long time of repeated use, the hinges and connecting parts are prone to loosen, wear and even damage due to excessive impact. This not only increases the maintenance cost, but also may cause the door panel to malfunction, even make the door body unable to close normally, seriously affecting the use function of the oven and the durability of the product.
[0005] 3. Poor user experience. The sudden falling of the oven door gives the user a sense of insecurity, especially when the oven door is heavy, the user may be hit by the uncontrollable falling of the door body, increasing the risk of accidental injury. In addition, frequent noise and unstable door body movement make the user doubt the quality of the product, thereby affecting the overall user experience, so it is necessary to make further improvements. INVENTION CONTENTS
[0006] The utility model aims at overcoming the shortcomings of the prior art, and provides an automatic door closer for an electric appliance box door, which has the advantages of simple structure, convenient use, automatic door closing effect, and the ability to maintain the door closing force after the box door is closed, thereby avoiding heat leakage and improving the thermal efficiency of the product.
[0007] The purpose of this utility model is achieved in the following way: an automatic door closer for an electrical box, which includes a base fixed inside the box, a guide plate extending upward from the base, and a guide groove formed through the guide plate.
[0008] It also includes a hook plate, which is installed on the side of the guide plate. The side wall of the hook plate extends towards the guide plate with a guide post, which slides into the guide groove. The front end of the hook plate is provided with a hook groove to connect with the box door.
[0009] A reset spring is provided between the base or guide plate and the hook plate, and the reset spring pulls the hook plate to move in the direction of closing the door.
[0010] Furthermore, the guide groove is a "C"-shaped groove that is high in the middle and low on both sides.
[0011] Furthermore, the sidewall of the guide plate extends toward the hook plate with a first limiting post and a second limiting post. The first limiting post and the second limiting post are distributed on the upper and lower sides of the guide groove, forming a limiting area between the first limiting post and the second limiting post. The hook plate slides within this limiting area.
[0012] Furthermore, the first and second limiting posts are formed by stamping from the guide plate body material.
[0013] Furthermore, the tail of the hook plate extends into the upper and lower ends with limiting plates, and the limiting plates and the hook plate are distributed in a "T" shape.
[0014] Furthermore: the hook plate has a tension spring hole at its tail end, and a tension spring seat is provided on the base. The two ends of the reset tension spring are connected to the tension spring hole and the tension spring seat.
[0015] Furthermore, a roller is installed on the cylindrical surface of the guide post, and the roller slides within the guide groove.
[0016] Furthermore: a first spacer and a second spacer are rotatably mounted on the surface of the guide post, and a concave rolling groove is provided between the first spacer and the second spacer. The first spacer and the second spacer cover both ends of the guide groove, and the rolling groove rolls within the guide groove.
[0017] Furthermore, the guide plate is also equipped with positioning pins.
[0018] The beneficial effects of this utility model are: 1. Simple structure, low production cost, and improved market competitiveness.
[0019] This automatic oven door closer features a spring-loaded return spring to ensure a tight seal. Whenever the oven door is opened, the return spring automatically pulls the door back to the closed position, ensuring the door remains closed at all times.
[0020] This elastic reset function not only allows the oven door to automatically reset, but also ensures the door's airtightness, improving the oven's thermal efficiency and safety during use. Simultaneously, the continuous force provided by the reset spring ensures the door maintains an appropriate closing force during closure, preventing accidental opening due to external interference or vibration, effectively improving the oven's sealing performance and preventing heat leakage.
[0021] The guide groove and limiting post structure in this invention effectively limit the opening angle of the oven door. The guide post and limiting post work together to control the sliding range of the hook plate, ensuring that the oven door will not exceed a predetermined angle when opened. This design not only enhances the stability of oven door operation but also prevents damage or loss of control due to excessive opening, improving the safety of oven door use and avoiding problems such as excessive door swing or impact with other components. Attached Figure Description
[0022] Figure 1 , 2 This is a diagram showing the effect of assembling and using this utility model with an oven.
[0023] Figure 3 In this utility model Figure 1 Enlarged view of the structure of part A.
[0024] Figure 4 , 5 This is a rendering of the final assembly of this utility model.
[0025] Figure 6 , 7 This is an exploded view of the structure of this utility model. Detailed Implementation
[0026] The present invention will be further described in detail below with reference to the accompanying drawings. An automatic door closer for an electrical box includes a base 2 fixed inside the box body 1, a guide plate 3 extending upward from the base 2, and a guide groove 31 extending through the guide plate 3 through its body;
[0027] It also includes a hook plate 4, which is installed on the side of the guide plate 3. The side wall of the hook plate 4 extends towards the guide plate 3 with a guide post 5. The guide post 5 extends into the guide groove 31 and slides. The front end of the hook plate 4 is provided with a hook groove 41 to connect with the box door 6.
[0028] The base 2 or the guide plate 3 and the hook plate 4 are provided with a reset tension spring 7, the reset tension spring 7 pulls the hook plate 4 to always move towards the door closing direction.
[0029] In one of the embodiments, the guide groove 31 is a "C" shaped groove with middle high and both sides low.
[0030] In one of the embodiments, the sidewall of the guide plate 3 extends towards the hook plate 4 with a first limiting column 32 and a second limiting column 33, the first limiting column 32 and the second limiting column 33 are distributed on the upper and lower sides of the guide groove 31, and a limiting area is formed between the first limiting column 32 and the second limiting column 33, the hook plate 4 is located in the limiting area and slides.
[0031] In one of the embodiments, the first limiting column 32 and the second limiting column 33 are stamped from the material of the guide plate 3.
[0032] In one of the embodiments, the tail of the hook plate 4 extends towards the upper and lower ends with a limiting plate 42, and the limiting plate 42 and the hook plate 4 are distributed in a "T" shape.
[0033] In one of the embodiments, the tail of the hook plate 4 is provided with a tension spring hole 43, the base 2 is provided with a tension spring seat 21, and the two ends of the reset tension spring 7 are connected in the tension spring hole 43 and the tension spring seat 21.
[0034] In one of the embodiments, the column surface of the guide column 5 is installed with a roller, and the roller slides in the guide groove 31.
[0035] In one of the embodiments, the column surface of the guide column 5 is rotatably installed with a first spacer ring 51 and a second spacer ring 52, and a concave rolling groove 53 is arranged between the first spacer ring 51 and the second spacer ring 52, the first spacer ring 51 and the second spacer ring 52 cover both ends of the guide groove 31, and the rolling groove 53 rolls in the guide groove 31. In which, the guide column and the first spacer ring can also be integrally made from the same part, specifically, a boss is directly processed on the guide column to replace the structure of the first spacer ring, so as to reduce the number of parts.
[0036] In one of the embodiments, the guide plate 3 is further installed with a positioning pin 8.
[0037] Working principle:
[0038] In this case, when the user opens the oven door, the reset tension spring 7 exerts its elastic reset function. One end of the reset tension spring is connected to the base 2, and the other end is connected to the hook plate 4. When the oven door is opened, the hook plate 4 slides along the guide groove 31, stretching the reset tension spring 7 and storing elastic potential energy. When the user releases the oven door, the reset tension spring 7 pulls the hook plate 4 towards the closed position through its elastic force, thereby automatically closing the oven door. This process ensures that the oven door always maintains good sealing, preventing heat leakage and improving energy efficiency. Therefore, the design of the reset tension spring not only enables the door body to automatically reset, but also provides continuous door closing force, ensuring good sealing and effectively improving the safety and energy efficiency of the oven.
[0039] Specifically, the utility model designs the limiting structure, utilizes the limiting post on the guide plate 3 in the guide groove, restricts the opening angle of oven door. The side wall of guide plate extends the spacer ring to the direction of hook plate 4, is located the upper and lower sides of guide groove 31 respectively, forms the limiting area. When hook plate 4 slides in guide groove 31, limiting post will limit the sliding distance of hook plate, thereby limiting the opening angle of oven door. This limiting design effectively prevents the door body from opening too much, avoids the problem of hinge damage or unstable use caused by the door plate opening and closing at too large an angle. By controlling the door opening angle, the movement of the oven door is more safe and reliable, prolonging the service life.
[0040] Among them, in order to ensure the accurate installation and stable cooperation of the oven door, the utility model sets the positioning pin 8 on the hook plate 4. The positioning pin can lock the initial position of the hook plate, ensure that the hook plate and the appliance box can be quickly installed and connected during installation. Make the door closer more convenient to install and connect with the oven.
[0041] Further, the guide groove 31 on the guide plate 3 and the guide column 5 on the hook plate 4 closely cooperate, allowing the oven door to move smoothly during opening and closing. The guide column 5 on the hook plate slides along the guide groove 31, ensuring the stability of the door body during movement. In addition, the guide column 5 is provided with a roller on the surface, which slides in the guide groove, reducing friction and improving the smoothness of movement. This design effectively reduces friction, making the opening and closing operation of the oven door more smooth and stable, avoiding jamming and uneven stress during door movement, and prolonging the service life of each component.
[0042] In conclusion, the automatic door closer of the electric appliance box door can automatically reset, stably open and close and keep good sealing property in the using process of the oven door through the innovative design.
[0043] Obviously, the above embodiments are only examples for clearly illustrating, but not limitation to the embodiments. Other different forms of changes or variations can be made on the basis of the above description for those skilled in the art. All the embodiments need not and cannot be exhausted here. The obvious changes or variations derived therefrom are still within the protection scope of the claims of the utility model.
Claims
1. An electric cabinet door automatic door closer, characterized in that: It include the base (2) fixed in the box (1), the base (2) extends upwardly with the guide plate (3), the guide plate (3) is provided with the guide groove (31) through the body, the guide plate (3) is provided with the guide groove (31) through the body, It also includes the hook plate (4), the hook plate (4) is installed on the side of the guide plate (3), the side wall of the hook plate (4) extends in the direction of the guide plate (3) with the guide column (5), the guide column (5) extends into the guide groove (31) and slides, the front end of the hook plate (4) is provided with the hook groove (41) and is connected with the box door (6), The base (2) or the guide plate (3) is provided with the reset tension spring (7) between the hook plate (4), the reset tension spring (7) pulls the hook plate (4) and always moves in the direction of closing the door.
2. An automatic door closer for an electrical cabinet door according to claim 1, characterised in that: The guide groove (31) is a "C" shaped groove with high middle and low sides.
3. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The side wall of the guide plate (3) extends in the direction of the hook plate (4) with the first limiting column (32) and the second limiting column (33), the first limiting column (32) and the second limiting column (33) are distributed on the upper and lower sides of the guide groove (31), and the limiting area is formed between the first limiting column (32) and the second limiting column (33), the hook plate (4) is located in the limiting area and slides.
4. An automatic door closer for an electrical cabinet door according to claim 3, characterised in that: The first limiting column (32) and the second limiting column (33) are stamped from the body material of the guide plate (3).
5. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The tail of the hook plate (4) extends to the upper and lower ends with the limiting plate (42), and the limiting plate (42) and the hook plate (4) are distributed in a "T" shape.
6. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The tail of the hook plate (4) is provided with the tension spring hole (43), the base (2) is provided with the tension spring seat (21), and the two ends of the reset tension spring (7) are connected in the tension spring hole (43) and the tension spring seat (21).
7. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The column surface of the guide column (5) is provided with a roller, and the roller slides in the guide groove (31).
8. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The column surface of the guide column (5) is rotatably provided with the first spacer ring (51) and the second spacer ring (52), and the concave rolling groove (53) is arranged between the first spacer ring (51) and the second spacer ring (52), the first spacer ring (51) and the second spacer ring (52) cover the two ends of the guide groove (31), and the rolling groove (53) rolls in the guide groove (31).
9. An automatic door closer for an electrical cabinet door according to claim 1, characterized in that: The positioning pin (8) is also installed on the guide plate (3).