Refrigerator power-assisted door handle structure

Abstract

This invention discloses a refrigerator door-assisting handle structure, including a cabinet and a door. The door is hinged to one side of the cabinet, and the mounting cavity is a longitudinally arranged cavity inside the door. The handle body is disposed within the mounting cavity and slidably connected to it, allowing the handle body to be pulled out from the mounting cavity. A force-saving lever is disposed within the mounting cavity, with at least one end of the handle body having the force-saving lever. The mounting cavity also has a fixed shaft, and the middle part of the force-saving lever is rotatably connected to the fixed shaft. Pulling the handle body drives a pushing mechanism via the force-saving lever to assist in opening the refrigerator door. This invention improves upon existing rotating handles by allowing the handle to be pulled directly out from the door, ensuring that fingers can always grip the handle during pulling, preventing slippage and loss of control. By utilizing the extended lever arm, the lever principle can be effectively utilized to assist in opening the door with less effort, achieving a good door-opening assistance effect.

Description

Technical Field

[0001] This invention relates to the field of home appliance door handles, specifically to a refrigerator door handle structure. Background Technology

[0002] Refrigerators and upright freezers typically use magnetic sealing strips to seal the door and cabinet, preventing cold air from escaping and ensuring cooling efficiency. However, opening the door can be difficult due to the pressure difference between the inside and outside of the refrigerator, combined with negative pressure and magnetic force, especially in the first 5mm or so.

[0003] In order to solve the above problems, the existing technology often adopts the structure disclosed in publication (announcement) numbers: CN107062775B, CN108756461B, CN106369920B. The above technologies all use a refrigerator door handle that can rotate to the side to help open the refrigerator door, and use the rotational torque of the door handle to drive the push rod to push the refrigerator door to achieve assistance. However, in actual use, users are more accustomed to standing in front of the refrigerator door and directly pulling the door handle when opening it. While the aforementioned side-rotating refrigerator door handle can convert the rotational torque into an assist in opening the door, as the handle rotates, the side opening of the handle changes angle, making it face forward. At this time, the user's fingers hooked inside the handle opening will rotate forward, changing the direction of the force. The force that was originally perpendicular to the inner wall of the handle may eventually become a force parallel to the inner wall of the handle, which can easily lead to slippage and loss of hand. In addition, users often open the refrigerator while cooking, and their hands inevitably get oily, making them more prone to slippage. This leads to a decline in the user experience. Therefore, it is urgent to research a refrigerator door handle structure to solve the above-mentioned problems. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned technical problems by providing a refrigerator door-assisting handle structure, which changes the existing structure of the handle rotation assisting the refrigerator door to open, and uses the driving force of directly pulling the handle to assist the opening of the refrigerator door.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a refrigerator door handle structure, including a cabinet and a door, the door being hinged to one side of the cabinet, and also including a mounting cavity, the mounting cavity being an internal cavity longitudinally disposed on the side of the door away from its hinge.

[0006] A handle body is disposed in and slidably connected to a mounting cavity, and the handle body can be pulled out from the mounting cavity by translation;

[0007] The effort-saving lever is set in the mounting cavity. At least one end of the handle body is provided with the effort-saving lever. The mounting cavity is also provided with a fixed shaft. The middle part of the effort-saving lever is rotatably connected to the fixed shaft. The effort-saving lever is divided into a lever arm one and a lever arm two with the fixed shaft as the dividing line. The end of the lever arm one is connected to the handle body. The end of the lever arm two is provided with a pushing mechanism. The length of the lever arm one is greater than that of the lever arm two.

[0008] Pulling the handle body drives the jacking mechanism to move horizontally or extend to help open the refrigerator door through the rotation of the lever.

[0009] Furthermore, the handle body has a grip portion on the outside of the box for pulling the handle body out. The handle body and the lever arm are connected at one end with a recessed connecting cavity. One end of the lever arm extends into the handle body through the connecting cavity. A fixing rod is provided in the connecting cavity. One end of the lever arm is provided with a waist hole, which is fitted onto the fixing rod. When the handle body is pulled out, the fixing rod drives the force-saving lever to rotate.

[0010] Furthermore, a top block is fixedly provided along the edge of the box body, and an opening is provided on the mounting cavity for the top block to pass through;

[0011] The pushing mechanism includes a slider, which is slidably connected and disposed in the mounting cavity. The slider can slide along the mounting cavity. An inclined sliding surface is provided at one end of the slider near the second lever arm. The end of the second lever arm is placed on the sliding surface. An oblique sliding surface is provided on the top block. A roller is rotatably connected at one end of the slider opening. The roller cooperates with the sliding surface.

[0012] Furthermore, the two ends of the lever arm are rotatably connected to rollers; the mounting cavity has rails on both sides of one end of the slider, and protrusions on both sides of the slider cooperate with the rails, with the protrusions placed inside the rails to limit the movement of the slider.

[0013] Furthermore, the pushing mechanism includes a push rod, and the mounting cavity has an opening for the push rod to pass through. The push rod is slidably connected and disposed in the opening. The push rod is T-shaped, and a retaining edge is provided at one end of the push rod in the mounting cavity. A rectangular through hole is provided through the push rod, and a stop block is fixedly disposed in the opening. The stop block is placed in the through hole, and a spring is provided between the stop block and the inner sidewall of the through hole.

[0014] Furthermore, the lever arm two has a bent portion near the top rod end, and a roller two is rotatably connected to the end of the bent portion.

[0015] Furthermore, a buffer pad is provided on the end face of the top rod extending out of the opening.

[0016] Furthermore, it also includes a handle reset mechanism, comprising at least one elongated hole through the handle body, a stop bar fixedly provided in the mounting cavity, the stop bar being disposed inside the elongated hole, and a spring being provided between the stop bar and one end of the elongated hole.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention improves upon the existing rotating handle by changing it to one that can be pulled directly out from the door, thus ensuring that the fingers can always grip the handle during the pulling process and preventing slippage.

[0019] 2. By utilizing the extended lever arm of the lever, the lever principle can be effectively utilized to help open the box door with less effort, achieving a good door opening assistance effect.

[0020] 3. Because roller 2 is provided at the end of lever arm 2, the force loss when it comes into contact with the jacking mechanism can be reduced. Attached Figure Description

[0021] Figure 1 This is an isometric view of the first embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the longitudinal section of the first embodiment of the present invention;

[0023] Figure 3 For the present invention Figure 2 Schematic diagram of section AA;

[0024] Figure 4 This is an isometric view of the second embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the longitudinal section of the second embodiment of the present invention;

[0026] In the diagram: 1. Box body; 2. Box door; 3. Mounting cavity; 4. Handle body; 5. Effort-saving lever; 6. Fixed shaft; 7. Lever arm one; 8. Lever arm two; 9. Hand grip; 10. Connecting cavity; 11. Fixed rod; 12. Waist hole; 13. Top block; 14. Opening; 15. Slider; 16. Sliding surface one; 17. Sliding surface two; 18. Roller one; 19. Roller two; 20. Track; 21. Protrusion; 22. Top rod; 23. Edge; 24. Through hole; 25. Stop block; 26. Spring one; 27. Bending part; 28. Long hole; 29. ​​Stop rod; 30. Spring two. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Example 1

[0029] A refrigerator door handle assist structure, such as Figure 1 , Figure 2 As shown, the refrigerator includes a cabinet 1 and a door 2. Similar to ordinary refrigerators in the prior art, the door 2 is hinged to one side of the cabinet 1. This embodiment also includes a mounting cavity 3. The mounting cavity 3 can adopt a pre-embedded box design to facilitate modular assembly during the production process. The mounting cavity 3 is a longitudinally located internal cavity on the side of the door 2 away from its hinge. The mounting cavity 3 can be used to install the handle body 4, the force-saving lever 5, and the pushing mechanism. This invention helps to open the refrigerator door 2 by pulling the handle body 4 to move it outward from the door 2, and converting the moving torque of the handle body 4 into the translation of the pushing mechanism through the force-saving lever 5. Since the handle body 4 slides outward, the rotation of the handle body 4 is avoided. The handle body 4 is provided with a hand grip 9 on the outside of the cabinet 1 for pulling the handle body 4 outward. The hand grip 9 can improve the grip effect of the handle body 4, thereby avoiding slippage or loss of hand and improving the user experience.

[0030] Specifically, such as Figure 2 As shown, the handle body 4 is disposed within and slidably connected to the mounting cavity 3, and the handle body 4 can be pulled out from the mounting cavity 3. When the user grips the handle portion 9, it forms a grasping shape, facilitating the pulling of the handle body 4 from the door 2 and generating the force to drive the pushing mechanism. A force-saving lever 5 is disposed within the mounting cavity 3, and at least one end of the handle body 4 is provided with a force-saving lever 5. Figure 2 The diagram shows that a force-saving lever 5 and a pushing mechanism are respectively installed at the upper and lower ends of the handle body 4. This arrangement facilitates the generation of a pushing force on the door 2 from both the upper and lower sides of the housing 1, making the force application more balanced. The mounting cavity 3 is also equipped with a fixed shaft 6. The middle part of the force-saving lever 5 is rotatably connected to the fixed shaft 6. In actual use, the force-saving lever 5 can be rotated under the drive of the handle body 4. The force-saving lever 5 is divided into a first lever arm 7 and a second lever arm 8 with the fixed shaft 6 as the dividing line. The first lever arm 7 is located closer to the handle body 4, and the second lever arm 8 is located away from the handle body 4. The end of the first lever arm 7 is connected to the handle body 4, which facilitates the driving of the force-saving lever 5 when the handle body 4 moves. The lever arm 8 is equipped with a pushing mechanism at its end. The fixed shaft 6 is positioned relatively far away from the handle body 4, so that the length of the lever arm 7 is greater than that of the lever arm 8. Since the mounting cavity 3 is a longitudinally arranged cavity, the position of the fixed shaft 6 has a large adjustment range. Since the door 2 itself has a certain thickness, the fixed shaft 6 can be positioned as far away from the handle body 4 as possible, so that the length of the lever arm 7 is greater than that of the lever arm 8. It can be understood that, according to the lever principle, the longer end of the lever arm requires less effort, so the handle body 4 can be pulled with a smaller force, while the other end can amplify the force and act on the pushing mechanism to achieve the effect of saving effort.

[0031] The connection between lever arm 7 and handle body 4 can be as follows: one end of handle body 4 and lever arm 7 is provided with a recessed connecting cavity 10. The connecting cavity 10 provides space for lever arm 7 to rotate. The end of lever arm 7 extends into handle body 4 through the connecting cavity 10. A fixing rod 11 is provided in the connecting cavity 10. The end of lever arm 7 is provided with a waist hole 12. The waist hole 12 is sleeved on the fixing rod 11. When handle body 4 is pulled out, the force-saving lever 5 is driven to rotate through the fixing rod 11. In use, lever arm 7 rotates. The waist hole 12 at its end provides sufficient space for the fixing rod 11 to move inside, so that the fixing rod 11 can smoothly pull lever arm 7.

[0032] In the pushing mechanism of this embodiment, a top block 13 needs to be fixedly provided on the edge of the housing 1, and an opening 14 is provided on the mounting cavity 3 for the top block 13 to pass through. When the housing door 2 is closed, the top block 13 can be inserted into the mounting cavity 3 through the opening 14. The pushing mechanism also includes a slider 15, which is slidably connected and disposed in the mounting cavity 3. The slider 15 can slide along the direction of the mounting cavity 3, such as... Figure 3 As shown, a track 20 is provided on both sides of one end of the mounting cavity 3 where the slider 15 is located. The slider 15 has a protrusion 21 on both sides that cooperates with the track 20. The protrusion 21 can also be in the form of a roller to reduce sliding friction resistance. The protrusion 21 is placed in the track 20 to limit the movement of the slider 15, so that the slider 15 moves back and forth in the vertical direction. That is, when the handle body 4 is pulled outward, the slider 15 moves away from the handle body 4. When the handle body 4 is reset, the slider 15 retracts.

[0033] To achieve the above specific action steps, such as... Figure 2 As shown, the slider 15 has an inclined sliding surface 16 near the end of the lever arm 8. The inclined surface 16 should allow the lever arm 8 to rotate and push the slider 15 away from the handle body 4. The end of the lever arm 8 is placed on the sliding surface 16. The top block 13 has a slanted sliding surface 17. When the slider 15 moves, the up-and-down movement is converted into a pushing force on the box 1 through the sliding surface 17, thereby pushing the box door 2 open under the reaction force. A roller 18 is rotatably connected to the end of the slider 15 at the opening 14. The roller 18 cooperates with the sliding surface 17. A roller 19 is rotatably connected to the end of the lever arm 8. The rollers 18 and 19 can form a rolling contact between the contact surfaces, greatly reducing resistance and improving the force transmission effect.

[0034] Example 2:

[0035] The difference between this embodiment and the first embodiment is that the pushing mechanism is changed to directly push the box door 2 open via the push rod 22, such as... Figure 4 , Figure 5As shown, the pushing mechanism includes a push rod 22. The mounting cavity 3 has an opening 14 for the push rod 22 to pass through. The push rod 22 is slidably connected in the opening 14. When the box door 2 is closed, the push rod 22 retracts into the opening 14. When the door needs to be opened, the handle body 4 is pulled, and the push rod 22 is pushed out directly through the lever 5. When pushed out, the push rod 22 can directly push against the box body 1 to open the box door 2. The push rod 22 is T-shaped. One end of the push rod 22 in the mounting cavity is provided with a retaining edge 23. The retaining edge 23 limits the push rod 22 to prevent it from falling out of the opening 14.

[0036] The top rod 22 has a rectangular through hole 24. A stop block 25 is fixed inside the opening 14. The stop block 25 is placed inside the through hole 24. A spring 26 is provided between the stop block 25 and the inner wall of the through hole 24. The spring 26 is used to reset the top rod 22. In the free state, the spring 26 pushes the top rod 22 up and retracts it into the opening 14. When the handle body 4 is pulled, the top rod 22 compresses the spring 26, causing the end of the top rod 22 to extend out of the opening 14. The lever arm 8 has a bent part 27 near the end of the top rod 22. The end of the bent part 27 is rotatably connected to a roller 19. The bent part 27 is used to bypass the retaining edge 23 at the end of the top rod 22, so that the roller 19 can always press against the end of the top rod 22. A buffer pad can also be provided on the end face of the top rod 22 extending out of the opening 14 to prevent dents from the housing 1 during long-term use, and also to achieve a silent effect.

[0037] Furthermore, it also includes a handle reset mechanism, including at least one elongated hole 28 through the handle body 4, and a stop bar 29 fixedly provided in the mounting cavity 3. The stop bar 29 is located inside the elongated hole 28, and a spring 30 is provided between the stop bar 29 and one end of the elongated hole 28. Under the action of the spring 30, the handle body 4 can be retracted into the mounting cavity 3 in a free state.

[0038] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A refrigerator door handle structure, comprising a cabinet body (1) and a door (2), wherein the door (2) is hinged to one side of the cabinet body (1), characterized in that, It also includes a mounting cavity (3), which is an internal cavity longitudinally arranged on the side of the door (2) away from its hinge. A handle body (4) is disposed within and slidably connected to the mounting cavity (3), and the handle body (4) can be pulled out from the mounting cavity (3). The handle body (4) is provided with a grip (9) on the outside of the box (1) for pulling the handle body (4) out. The handle body (4) is provided with a concave connecting cavity (10) at one end of the lever arm (7). The end of the lever arm (7) extends into the handle body (4) through the connecting cavity (10). A fixing rod (11) is provided in the connecting cavity (10). A waist hole (12) is provided at the end of the lever arm (7). The waist hole (12) is sleeved on the fixing rod (11). When the handle body (4) is pulled out, the force-saving lever (5) is driven to rotate through the fixing rod (11). The lever (5) is installed in the mounting cavity (3). The upper and lower ends of the handle body (4) are respectively provided with the lever (5) and the pushing mechanism. The mounting cavity (3) is also provided with a fixed shaft (6). The middle part of the lever (5) is rotatably connected to the fixed shaft (6). The lever (5) is divided into a first lever arm (7) and a second lever arm (8) with the fixed shaft (6) as the dividing line. The end of the first lever arm (7) is connected to the handle body (4). The end of the second lever arm (8) is provided with a pushing mechanism. The length of the first lever arm (7) is greater than that of the second lever arm (8). The end of the second lever arm (8) is rotatably connected with a second roller (19). The box body (1) is fixedly provided with a top block (13) along its edge. The mounting cavity (3) is provided with an opening (14) for the top block (13) to pass through. When the box door (2) is closed, the top block (13) is inserted into the mounting cavity (3) through the opening (14). The pushing mechanism includes a slider (15). The slider (15) is slidably connected and disposed in the mounting cavity (3). The slider (15) slides along the direction set by the mounting cavity (3). The mounting cavity (3) is provided with rails (20) on both sides of one end of the slider (15). The slider (15) is provided with rails (20) on both sides of the slider (15). A protrusion (21) is provided to cooperate with the track (20). The protrusion (21) is placed in the track (20) to limit the movement of the slider (15). The slider (15) has an inclined sliding surface (16) near the end of the lever arm (8). The roller (19) at the end of the lever arm (8) is placed on the sliding surface (16). The top block (13) has a slanted sliding surface (17). The slider (15) is rotatably connected to a roller (18) at the end of the opening (14). The roller (18) cooperates with the sliding surface (17). Pulling the handle body (4) rotates the drive slider (15) through the force-saving lever (5) and moves it along the track (20). Roller one (18) presses against the sliding surface two (17) of the top block (13) to generate a reverse thrust, which simultaneously helps to open the refrigerator door (2) from the upper and lower sides of the box body (1). It also includes a handle reset mechanism, including at least one elongated hole (28) through the handle body (4), a stop bar (29) fixedly provided in the mounting cavity (3), the stop bar (29) is provided inside the elongated hole (28), and a spring (30) is provided between the stop bar (29) and one end of the elongated hole (28).

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