Push rod for door opening device, door opening device and container
By designing a connection part and shock absorber structure for refrigerator push rods, the scratch problem when the push rod comes into contact with the door body and the problem of excessive assembly holes is solved, and space saving, assembly accuracy reduction and shock absorption effect improvement are achieved.
Patent Information
- Application Number
- CN202421809650.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing refrigerator push rods are prone to scratch the door body when they come into contact with the door body, and the shock absorption method causes the push rod assembly hole to be too large, resulting in waste of space and high assembly accuracy requirements.
A push rod for door opening device is designed, including a push rod main body and a shock absorber. The push end of the push rod main body is provided with a connecting part, and the connecting part consists of a first connecting body and a second connecting body. The shock absorber is set on these two connecting bodies. By adjusting the diameter and extension length of the connecting body, the assembly hole diameter of the push rod is reduced and the connection strength of the shock absorber is improved.
By reducing the assembly hole diameter of the push rod, space is avoided and accuracy requirements for push rod assembly are reduced, the production difficulty and cost of door opening devices and containers are reduced, and the connection strength between the shock absorber and the connection part is improved.
Smart Images
Figure CN222991362U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure relates to the technical field of containers, and particularly to a push rod for an opening device, an opening device, and a container. Background Art
[0002] With the progress of home appliance technology, more and more home appliances are equipped with an automatic door opening and closing function. For example, the automatic door opening and closing function of a refrigerator usually uses an electric push rod device to push the opening and closing of the refrigerator door body. However, the contact and collision between the refrigerator door body and the top of the push rod are likely to scratch the door body, and the vibration between the two will affect the service life of the motor of the push rod device. The existing push rod reduces vibration by increasing the diameter of the top of the push rod and clamping the top of the push rod into a silicone sleeve with a smaller opening.
[0003] However, this vibration reduction method results in that when the push rod is assembled with the box body, the reserved hole needs to be at least as large as the largest diameter of the push rod. Because in the closed door state, the top of the push rod needs to be flush with the box body to ensure that the door is closed. This reserved hole is much wider than most of the body of the push rod, which not only causes waste of space, but also increases the requirement for the straightness of the push rod assembly. If the thinner part of the push rod is skewed, it will directly cause the push rod to be unable to retract. Summary of the Utility Model
[0004] In view of at least one of the above problems existing in the prior art, the present disclosure provides a push rod for an opening device, an opening device, and a container.
[0005] According to a first aspect of the present disclosure, there is provided a push rod for an opening device, including a push rod main body and a shock absorber. A connecting portion is provided at the pushing end of the push rod main body. The connecting portion includes a first connecting body and a second connecting body. The second connecting body is located between the first connecting body and the push rod main body. The shock absorber is sleeved on the first connecting body and the second connecting body;
[0006] The first connecting body has a first diameter D1, the second connecting body has a second diameter D2, and the push rod main body has a third diameter D3. D2 < D1, D1 = nD3, and the value range of n is 0.5 - 0.9.
[0007] Optionally, the first diameter D1 and the second diameter D2 satisfy: D1 = mD2, and the value range of m is 1.1 - 2.
[0008] Optionally, the third diameter D3 is 8 - 20 mm.
[0009] Optionally, the first connecting body has a first extension length L1 in the axial direction of the push rod main body, and the second connecting body has a second extension length L2 in the axial direction of the push rod main body. The value range of L1 is 2 - 8 mm, and L2 = aL1, and the value range of a is 1.1 - 2.
[0010] Optionally, the shock absorber is provided with a connecting groove, which includes a first cavity and a second cavity communicating with each other. The first cavity is used to accommodate the first connecting body, and the second cavity is used to accommodate the second connecting body;
[0011] The first connecting body has a first extension length L1 in the axial direction of the push rod main body, and the second connecting body has a second extension length L2 in the axial direction of the push rod main body. The extension length of the first cavity in the axial direction of the push rod main body is less than the first extension length L1, and the extension length of the second cavity in the axial direction of the push rod main body is greater than the second extension length L2.
[0012] Optionally, a chamfer is provided on the outer side in the radial direction at one end of the first connecting body away from the push rod main body.
[0013] Optionally, the shock absorber includes a first shock-absorbing part and a second shock-absorbing part, and the second shock-absorbing part is farther away from the push rod main body than the first shock-absorbing part;
[0014] The first shock-absorbing part has a first outer diameter d1, and the second shock-absorbing part has a second outer diameter d2, where d2 > d1 and d2 = bD3, with 1 < b ≤ 1.5.
[0015] Optionally, the outer diameter of the second shock-absorbing part gradually increases in the direction away from the push rod main body.
[0016] Optionally, the push rod includes a shock-absorbing connecting piece, which includes the connecting part. One end of the first connecting body is provided with the second connecting body, and the other end of the first connecting body is provided with a mounting part, which is used for fixedly connecting with the pushing end of the push rod main body.
[0017] Optionally, a shock-absorbing support body is provided between the other end of the first connecting body and the mounting part, and the shock-absorbing support body is used for abutting against one end of the shock absorber close to the push rod main body.
[0018] According to the second aspect of the present disclosure, there is provided a door opening device, including a driving part and the push rod, where the driving part is used to drive the push rod to move, and the push rod is the push rod as described in the above technical solution.
[0019] According to the third aspect of the present disclosure, there is provided a container, including a door body and a door opening device, where the door opening device is used to open the door body, and the door opening device is the door opening device as described in the above technical solution.
[0020] Optionally, the container is used to provide a receiving space meeting expected conditions. For example, the receiving space has at least one of a desired temperature, a desired humidity, and a desired air pressure. Optionally, the receiving space can also provide desired processing conditions. For example, the receiving space has at least one of a desired radiation condition and a desired illumination condition.
[0021] Optionally, the container is a household appliance, an incubator, an oven, or an incubator. The household appliance is a refrigerator. The oven is a drying oven or a sterilization oven. The incubator is a biochemical incubator, a cell incubator, a microbial incubator, or a breeding incubator.
[0022] The present disclosure has the following beneficial effects:
[0023] Provided is a push rod for an opening device, an opening device, and a container, including a push rod body and a shock absorber. A connecting portion is provided at a pushing end of the push rod body. The connecting portion includes a first connecting body and a second connecting body. The second connecting body is located between the first connecting body and the push rod body. The shock absorber is sleeved on the first connecting body and the second connecting body. The first connecting body has a first diameter D1, the second connecting body has a second diameter D2, and the push rod body has a third diameter D3. D2 < D1, and D1 = nD3, where the value range of n is 0.5 - 0.9. Thus, by providing a connecting portion with a first connecting body and a second connecting body having smaller diameter sizes, it is possible to allow the shock absorber sleeved on the first connecting body and the second connecting body to have a smaller outer diameter and at the same time to have a sufficient thickness to meet the strength requirements, so that the outer diameter size of the push rod corresponding to the shock absorber is smaller. Furthermore, it is possible to reduce the diameter of the assembly hole or the reserved hole corresponding to the push rod, avoid space waste, and thereby reduce the assembly precision requirements for the push rod, and reduce the production difficulty and production cost of the opening device and the container to which it is applied.
[0024] The extending length of the first cavity in the axial direction of the push rod body is slightly less than the first extending length of the first connecting body in the axial direction of the push rod body. The extending length of the second cavity in the axial direction of the push rod body is slightly greater than the second extending length of the second connecting body in the axial direction of the push rod body. Thus, the shock absorber sleeved on the first connecting body and the second connecting body is stretched at the first connecting body and squeezed at the second connecting body, thereby improving the connection strength between the shock absorber and the connecting portion. Description of the Drawings
[0025] In order to more clearly illustrate the technical solutions of the present disclosure, the drawings required for use in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.
[0026] Figure 1 It is a schematic structural view of a push rod for a door opening device provided according to the present disclosure;
[0027] Figure 2 It is a schematic structural view of a push rod main body provided with a connecting portion according to the present disclosure;
[0028] Figure 3 It is a schematic structural view of a shock-absorbing connecting member provided according to the present disclosure;
[0029] Figure 4 It is a schematic structural view of a shock-absorbing member provided according to the present disclosure;
[0030] Figure 5 It is a schematic structural view of a door opening device provided according to the present disclosure. Detailed implementation manners
[0031] Next, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.
[0032] As Figures 1-5 shown, an embodiment of the present disclosure provides a push rod for a door opening device, including a push rod main body 1 and a shock-absorbing member 2. One end of the push rod main body 1 is set as a pushing end, and the pushing end can be in contact with a door body to push the door body open.
[0033] As Figures 1-2 shown, the pushing end of the push rod main body 1 is provided with a connecting portion for installing the shock-absorbing member 2. The connecting portion includes a first connecting body 3 and a second connecting body 4. The second connecting body 4 is located between the first connecting body 3 and the push rod main body 1. The shock-absorbing member 2 is sleeved on the first connecting body 3 and the second connecting body 4, and the shock-absorbing member 2 is connected to the push rod main body 1 through the first connecting body 3 and the second connecting body 4. Optionally, the shock-absorbing member 2 covers one end of the connecting portion away from the push rod main body 1. The shock-absorbing member 2 is made of a flexible material, such as rubber or silicone rubber.
[0034] The first connecting body 3 has a first diameter D1, the second connecting body 4 has a second diameter D2, and the push rod body 1 has a third diameter D3, where D2 < D1 and D1 = nD3, and the value range of n is 0.5 - 0.9. Thus, by setting the second diameter D2 of the second connecting body 4 to be smaller than the first diameter D1 of the first connecting body 3 and smaller than the third diameter D3 of the push rod body 1, a groove structure located between the first connecting body 3 and the push rod body 1 is constructed at the second connecting body 4. Through this groove structure, the shock absorber 2 is clamped to the connecting portion, preventing the shock absorber 2 from falling off the connecting portion. At the same time, by setting the first diameter D1 of the first connecting body 3 and the third diameter D3 of the push rod body 1 to satisfy the above relationship, with the first diameter D1 being smaller than the third diameter D3, it is possible to allow the shock absorber 2 sleeved on the first connecting body 3 and the second connecting body 4 to have a smaller outer diameter and a sufficient thickness to meet the strength requirements, resulting in a smaller outer diameter dimension of the push rod corresponding to the shock absorber 2. Furthermore, it is possible to reduce the diameter of the assembly hole or the reserved hole corresponding to the push rod, avoid space waste, and thereby reduce the assembly precision requirements of the push rod, as well as the production difficulty and production cost of the door opening device and the container to which it is applied.
[0035] Preferably, the value range of n is 0.6 - 0.8, such as 0.65, 0.7, 0.75, or 0.78.
[0036] In an alternative embodiment, the first diameter D1 and the second diameter D2 satisfy: D1 = mD2, where the value range of m is 1.1 - 2, preferably 1.2 - 1.8, such as 1.25, 1.4, 1.5, 1.6, or 1.65. Thus, there is a sufficient dimensional difference between the first diameter D1 and the second diameter D2, and this dimensional difference provides the required clamping thickness for the shock absorber 2. When the shock absorber 2 is sleeved on the first connecting body 3 and the second connecting body 4, it has a larger inner diameter at the first connecting body 3 and a smaller inner diameter at the second connecting body 4, thereby enabling the shock absorber 2 to be stably sleeved on the connecting portion and preventing the shock absorber from falling off the connecting portion.
[0037] In an alternative embodiment, the third diameter D3 is 8 - 20 mm. Preferably 10 - 16 mm, such as 12 mm, 13.5 mm, 15 mm, or 18 mm.
[0038] Exemplarily, the third diameter D3 is 10 - 18 mm, preferably 12 - 16 mm, such as 13 mm or 15 mm, the first diameter D1 is 3 - 5 mm smaller than the third diameter D3, such as 3.5 mm or 4 mm smaller, and the second diameter D2 is 5 - 8 mm smaller than the third diameter D3, such as 6 mm or 7 mm smaller.
[0039] In an alternative embodiment, the first connecting body 3 has a first extension length L1 in the axial direction of the push rod body 1, and the second connecting body 4 has a second extension length L2 in the axial direction of the push rod body 1. The value range of L1 is 2-8 mm, such as 4 mm, 5 mm, 6 mm or 7 mm; L2 = aL1, and the value range of a is 1.1-2. For example, the value of a is 1.2, 1.25, 1.3, 1.4, 1.5 or 1.65. Exemplarily, L2 is 3 mm, 4 mm or 5 mm. Thus, the shock absorber sleeved on the first connecting body 3 and the second connecting body 4 has a sufficient extension length in the axial direction of the push rod body, so as to have sufficient strength and clamping stability, while avoiding the extension length of the shock absorber in the axial direction of the push rod body 1 from being too long.
[0040] In an alternative embodiment, as Figure 4 shown, the shock absorber 2 is provided with a connecting groove, and the shock absorber 2 is sleeved on the first connecting body 3 and the second connecting body 4 through the connecting groove. The connecting groove includes a first cavity 21 and a second cavity 22 that communicate with each other. The first cavity 21 is used to accommodate the first connecting body 3, and the second cavity 22 is used to accommodate the second connecting body 4.
[0041] The first connecting body 3 has a first extension length L1 in the axial direction of the push rod body 1, and the second connecting body 4 has a second extension length L2 in the axial direction of the push rod body 1. The extension length of the first cavity 21 in the axial direction of the push rod body 1 is less than the first extension length L1, and the extension length of the second cavity 22 in the axial direction of the push rod body 1 is greater than the second extension length L2. Thus, the shock absorber 2 sleeved on the first connecting body 3 and the second connecting body 4 is stretched at the first connecting body 3 and squeezed at the second connecting body 4, thereby improving the connection strength between the shock absorber and the connecting part.
[0042] Exemplarily, the extension length of the first cavity 21 in the axial direction of the push rod body 1 is 0.1-0.5 mm smaller than the first extension length L1, such as 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm or 0.4 mm, and the extension length of the second cavity 22 in the axial direction of the push rod body 1 is 0.2-0.7 mm larger than the second extension length L2, such as 0.3 mm, 0.4 mm, 0.5 mm or 0.6 mm.
[0043] Optionally, the diameter of the first cavity 21 is substantially the same as the diameter of the first connecting body 3, and the diameter of the second cavity 22 is substantially the same as the diameter of the second connecting body 4.
[0044] In an alternative embodiment, a chamfer 30 is provided on the outer side of the end of the first connecting body 3 away from the push rod body 1 in the radial direction. Thus, when assembling the push rod, it is convenient to sleeved the shock absorber 2 onto the first connecting body 3 and the second connecting body 4, reducing the difficulty of sleeving the shock absorber 2.
[0045] Optionally, the chamfer 30 is a rounded corner or an oblique angle.
[0046] In an alternative embodiment, as Figure 4 shown, the shock absorber 2 includes a first shock absorption portion 23 and a second shock absorption portion 24. The first shock absorption portion 23 and the second shock absorption portion 24 are arranged in sequence along the axial direction of the push rod. The second shock absorption portion 24 is farther from the push rod body 1 than the first shock absorption portion 23. The first shock absorption portion 23 has a first outer diameter d1, and the second shock absorption portion 24 has a second outer diameter d2, where d2>d1, d2 = bD3, 1 < b ≤ 1.5, preferably, 1.13 < b ≤ 1.3. For example, b is 1.15, 1.2 or 1.25. Exemplarily, d2 is 1.5 - 4 mm larger than D3, such as 2 mm or 3 mm larger. Thus, the second shock absorption portion 24 of the shock absorber 2 away from the push rod body has a larger outer diameter, which can increase the strength of the shock absorber and extend the service life of the shock absorber.
[0047] Optionally, the outer diameter of the first shock absorption portion 23 is substantially the same as the diameter of the push rod body 1.
[0048] In an alternative embodiment, the outer diameter of the second shock absorption portion 24 gradually increases in the direction away from the push rod body 1. Thus, the side surface of the second shock absorption portion 24 is inclined radially outward in the direction away from the push rod body, which is beneficial for the push rod to retract after opening the door, can reduce the assembly precision requirements of the push rod, and reduce the failure rate of the door opening device.
[0049] In an alternative embodiment, the push rod body 1 and the connecting portion are configured as two independent components. The push rod includes a shock absorption connecting member. As Figure 3 shown, the shock absorption connecting member includes the connecting portion. One end of the first connecting body 3 is provided with the second connecting body 4, and the other end of the first connecting body 3 is provided with a mounting portion 5. The mounting portion 5 is used for fixedly connecting with the pushing end of the push rod body 1. Thus, the shock absorption connecting member is fixedly connected with the pushing end of the push rod body 1 through the mounting portion 5. By providing a shock absorption connecting member that is separately provided from the push rod body, a new shock absorption connecting member can be conveniently replaced after the shock absorption connecting member is damaged, simplifying the subsequent maintenance of the push rod.
[0050] Optionally, the mounting portion 5 is provided with a connecting thread, and the mounting portion 5 is threadedly connected to the push rod main body 1 through the connecting thread; alternatively, the mounting portion 5 is snap-connected to the push rod main body 1.
[0051] In an alternative embodiment, a shock-absorbing support body 6 is provided between the other end of the first connecting body 3 and the mounting portion 5, and the shock-absorbing support body 6 is used to abut against one end of the shock-absorbing member 2 close to the push rod main body 1. Specifically, the diameter of the shock-absorbing support body 6 is substantially the same as the diameter of the push rod main body 1, and the end surface of the shock-absorbing support body 6 close to the second connecting body 4 constitutes a support surface, and the support surface abuts against one end of the shock-absorbing member 2 close to the push rod main body 1, providing a supporting effect for the shock-absorbing member, avoiding damage to the shock-absorbing member due to the pressure exerted by the door body, and increasing the durability of the shock-absorbing member.
[0052] In an alternative embodiment, the push rod main body 1 and the connecting portion are of an integral structure, and the connecting portion is directly formed at the pushing end of the push rod main body 1.
[0053] The present disclosure also provides an opening device, as Figure 5 shown, the opening device includes a driving portion and the push rod, the driving portion is used to drive the push rod to move, and the push rod is the push rod as described in the above technical solution.
[0054] The present disclosure also provides a container, including a door body and an opening device, the opening device is used to open the door body, and the opening device is the opening device as described in the above technical solution.
[0055] Optionally, the container is used to provide a accommodation space meeting expected conditions, for example, a accommodation space having at least one of a desired temperature, a desired humidity, and a desired air pressure. Optionally, the accommodation space can also provide desired processing conditions, for example, the accommodation space has at least one of a desired radiation condition and a desired illumination condition.
[0056] Optionally, the container is a household appliance, an incubator, an oven, or an incubator. The household appliance is a refrigerator, the oven is a drying oven or a sterilization oven, and the incubator is a biochemical incubator, a cell incubator, a microbial incubator, or a breeding incubator. In an alternative embodiment, the container can also be other types of containers capable of providing conditions meeting expectations.
[0057] The few preferred embodiments disclosed above are only for illustration and should not be used to limit the scope of the present disclosure. Therefore, equivalent changes made according to the claims of the present disclosure still fall within the scope covered by the present disclosure.
Claims
1. A push rod for a door opening device, comprising a push rod body (1) and a shock absorbing member (2), characterized in that: A connecting portion is provided at the pushing end of the push rod body (1). The connecting portion includes a first connecting body (3) and a second connecting body (4). The second connecting body (4) is located between the first connecting body (3) and the push rod body (1). The shock-absorbing member (2) is sleeved on the first connecting body (3) and the second connecting body (4). The first connecting body (3) has a first diameter D1, the second connecting body (4) has a second diameter D2, and the push rod body (1) has a third diameter D3. D2 < D1, D1 = nD3, and the value range of n is 0.5 - 0.
9.
2. The push rod according to claim 1, characterized in that: The first diameter D1 and the second diameter D2 satisfy: D1 = mD2, and the value range of m is 1.1 - 2.
3. The push rod according to claim 1 or 2, characterized in that: The third diameter D3 is 8 - 20 mm.
4. The push rod according to claim 1 or 2, characterized in that: The first connecting body (3) has a first extension length L1 in the axial direction of the push rod body (1), and the second connecting body (4) has a second extension length L2 in the axial direction of the push rod body (1). The value range of L1 is 2 - 8 mm, and L2 = aL1, where the value range of a is 1.1 - 2.
5. The push rod according to claim 1 or 2, characterized in that: The shock-absorbing member (2) is provided with a connecting groove. The connecting groove includes a first cavity (21) and a second cavity (22) that communicate with each other. The first cavity (21) is used to accommodate the first connecting body (3), and the second cavity (22) is used to accommodate the second connecting body (4). The first connecting body (3) has a first extension length L1 in the axial direction of the push rod body (1), and the second connecting body (4) has a second extension length L2 in the axial direction of the push rod body (1). The extension length of the first cavity (21) in the axial direction of the push rod body (1) is less than the first extension length L1, and the extension length of the second cavity (22) in the axial direction of the push rod body (1) is greater than the second extension length L2.
6. The push rod according to claim 1 or 2, characterized in that: A chamfer (30) is provided on the outer side in the radial direction at one end of the first connecting body (3) away from the push rod body (1).
7. The push rod according to claim 1 or 2, characterized in that: The shock-absorbing member (2) includes a first shock-absorbing portion (23) and a second shock-absorbing portion (24). The second shock-absorbing portion (24) is farther away from the push rod body (1) than the first shock-absorbing portion (23). The first shock-absorbing portion (23) has a first outer diameter d1, and the second shock-absorbing portion (24) has a second outer diameter d2. d2 > d1, d2 = bD3, and 1 < b ≤ 1.
5.
8. The push rod according to claim 7, characterized in that: The outer diameter of the second shock-absorbing portion (24) gradually increases in the direction away from the push rod body (1).
9. The push rod according to claim 1 or 2, characterized in that: The push rod includes a shock-absorbing connecting member. The shock-absorbing connecting member includes the connecting portion. One end of the first connecting body (3) is provided with the second connecting body (4), and the other end of the first connecting body (3) is provided with a mounting portion (5). The mounting portion (5) is used for fixedly connecting with the pushing end of the push rod body (1).
10. The push rod according to claim 9, characterized in that A shock-absorbing support body (6) is provided between the other end of the first connecting body (3) and the mounting portion (5). The shock-absorbing support body (6) is used for abutting against one end of the shock-absorbing member (2) close to the push rod body (1).
11. A door opening device, comprising a driving unit and the push rod, wherein the driving unit is used to drive the push rod to move, characterized in that: The push rod is a push rod as described in any one of claims 1-10.
12. A container, comprising a door body and a door opening device, wherein the door opening device is used to open the door body, characterized in that: The door opening device is the door opening device as claimed in claim 11.