A clamp device for adjusting the height of a refrigerator door
By designing the tip and stepped structure of the clamping device, the problem of difficult shim installation in refrigerator door height adjustment was solved, achieving efficient and stable door height adjustment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGHONG MEILING CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-07-03
Smart Images
Figure CN224445649U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of household appliance technology, and more specifically, to a clamp device for adjusting the height of a refrigerator door. Background Technology
[0002] With the rapid development of the refrigerator manufacturing industry over the past few decades, manufacturing plants need to overcome the challenge of improving product appearance and quality. This requires streamlining routine technologies at every stage of product production, innovating and optimizing solutions for uneven door heights, and enhancing the core value of the user's aesthetic experience. In the refrigerator manufacturing process, the appearance of the refrigerator doors is a crucial and visible aspect of product quality. Uneven door height data is a key monitoring standard upon product warehousing, directly reflecting the user's perception of the appearance of high-end products. It is an important component of enhancing the brand image, taste, and quality of high-end refrigerators.
[0003] Especially during the installation of multi-door refrigerators, uneven door heights are a common problem. This is mainly due to the cumulative errors in the assembly of components, and the reasonable tolerances of each component cannot be further controlled, leading to a vicious cycle and becoming a major challenge in the refrigerator industry. Furthermore, current cutting-edge refrigerator technologies, such as zero-embedding and thin-walled designs, result in even less space for door hinges, making it even more difficult to adjust uneven door heights. Currently, height adjustment is generally achieved by adding shims to the hinge pins, but the limited space at this location makes it difficult to install the shims properly, further complicating the adjustment process. Utility Model Content
[0004] This application provides a clamping device for adjusting the height of a refrigerator door, which solves the problem that the existing gaskets are difficult to install and time-consuming when installed at the hinge pin.
[0005] To achieve the above objectives, this application provides the following technical solution:
[0006] A clamping device for adjusting the height of a refrigerator door includes a clamp handle, two clamp arms, and two clamp heads. The two clamp arms are arranged opposite to each other and are respectively connected to one end of the clamp handle, and are capable of moving towards or away from each other. The clamp heads are located at the ends of the clamp arms away from the clamp handle, and the two clamp heads are arranged opposite to each other and spaced apart.
[0007] Each of the clamp heads has a push-gripping part at its front end, and at least one of the push-gripping parts has a pointed tip, the wall thickness of which gradually decreases from back to front; the inner wall of the pointed tip has a stepped structure for engaging with the clamping height adjustment shim.
[0008] Optionally, the step structure includes:
[0009] A first wall, a vertical wall, and a second wall, wherein the first wall is the inner wall of the tip, the top of the vertical wall is connected to the first wall, and the bottom of the vertical wall is connected to the second wall;
[0010] The vertical wall surface is provided with a concave first arc-shaped relief groove for pushing against the circumferential outer edge of the height adjustment shim;
[0011] And / or, the leading edge of the second wall is provided with a second arc-shaped relief groove for avoiding the pivot pin.
[0012] Optionally, one end of each of the two clamp arms is close to each other and integrally connected to the clamp handle, and the other end of each of the two clamp arms extends along the length of the clamp arm and is symmetrically and spaced apart.
[0013] Optionally, the clamp arm includes a handle link section, a handle opening section, and a handle clamping section arranged sequentially from back to front;
[0014] The two handle linkage segments are brought close to each other and integrally connected to the clamp handle;
[0015] The handle opening section includes a straight opening section and a curved opening section connected sequentially from back to front, and the straight opening section is connected to the handle connecting rod section.
[0016] The handle clamping section includes a clamping curved section and a clamping straight section connected sequentially from back to front. The rear end of the clamping curved section is connected to the opening curved section, and the clamping straight section is connected to the clamp head.
[0017] Optionally, the included angle between the two open straight segments is 5°-15°.
[0018] Optionally, the opening curve segment is located outside the extension line of the opening straight segment, and the outward radius is R250mm-R350mm.
[0019] Optionally, the included angle between the two clamping line segments is 6°-10°.
[0020] Optionally, the two clamping curve segments are located inside the extension of the clamping straight line segment, with an inward radius of R300mm-R400mm.
[0021] Optionally, the angle between the inner wall of the tip and the center line of the clamping device is 160°-170° outward.
[0022] And / or, the angle between the outer wall of the tip and the center line of the clamping device is 165°-175° inward.
[0023] Optionally, the tip has a wall thickness of 0.2mm-0.5mm and a width of 7mm-10mm.
[0024] The refrigerator door height adjustment clamp device provided in this embodiment has the following technical advantages compared to the prior art:
[0025] The clamping device of this application includes a clamping handle, two clamping arms, and two clamping heads. Each clamping head has a pushing and holding portion at its front end, with a pointed tip. The wall thickness of the pointed tip gradually decreases from back to front to avoid a stop on the hinge pin, allowing the pointed tip to penetrate into the gap below the stop and push the height adjustment shim into place with the hinge pin, preventing the height adjustment shim from slipping or shifting. Simultaneously, a stepped structure is provided on the inner wall of the pointed tip to form a limiting fit with the edge of the height adjustment shim, ensuring that the clamping device will not slip or misalign during clamping; thus improving adjustment accuracy and operational safety. Attached Figure Description
[0026] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0027] Figure 1 This is a front view schematic diagram of a clamp device for adjusting the height of a refrigerator door, provided in an embodiment of this application.
[0028] Figure 2 A side view of a clamp device for adjusting the height of a refrigerator door is provided in an embodiment of this application.
[0029] Figure 3 This is a partially enlarged structural diagram of the stepped structure provided in an embodiment of this application;
[0030] Figure 4 This is a schematic diagram of the clamp arm provided in an embodiment of this application.
[0031] Figure 5 This is a schematic diagram of the clamping device provided in the embodiments of this application;
[0032] Figure 6 for Figure 5 A partially enlarged structural diagram;
[0033] Figure 7 This is a schematic diagram of the operation of the clamping device provided in the embodiments of this application.
[0034] The following labels are shown in the attached diagram:
[0035] Clamping device 100;
[0036] 1. Clamp handle; 2. Clamp arm; 3. Clamp head;
[0037] Push-and-hold part 31, tip part 311, stepped structure 32, first wall surface 321, vertical wall surface 322, second wall surface 323;
[0038] First arc-shaped clearance groove 3221, second arc-shaped clearance groove 3231;
[0039] Handle connecting rod section 21, handle opening section 22, handle clamping section 23;
[0040] Opening straight segment 221, opening curved segment 222;
[0041] Clamping curve segment 231, clamping straight line segment 232. Detailed Implementation
[0042] This utility model discloses a clamp device for adjusting the height of a refrigerator door, which solves the problem that the existing gaskets are difficult to install and time-consuming when installed at the hinge pin.
[0043] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0044] Please see Figure 1-7 , Figure 1 This is a front view schematic diagram of a clamp device for adjusting the height of a refrigerator door, provided in an embodiment of this application. Figure 2 A side view of a clamp device for adjusting the height of a refrigerator door is provided in an embodiment of this application. Figure 3 This is a partially enlarged structural diagram of the stepped structure provided in an embodiment of this application; Figure 4 This is a schematic diagram of the clamp arm provided in an embodiment of this application; Figure 5 This is a schematic diagram of the clamping device provided in the embodiments of this application; Figure 6 for Figure 5 A partially enlarged structural diagram; Figure 7 This is a schematic diagram of the operation of the clamping device provided in the embodiments of this application.
[0045] In one specific embodiment, the refrigerator door height adjustment clamp device 100 provided in this application includes a clamp handle 1, two clamp arms 2 and two clamp heads 3. The two clamp arms 2 are arranged opposite to each other and are respectively connected to one end of the clamp handle 1, and can move towards or away from each other. The clamp heads 3 are arranged at the end of the clamp arms 2 away from the clamp handle 1, and the two clamp heads 3 are arranged opposite to each other and spaced apart. The front end of each clamp head 3 is provided with a pushing clamping part 31, and at least one pushing clamping part 31 is provided with a tip 311. The wall thickness of the tip 311 gradually decreases from back to front. The inner wall of the tip 311 is provided with a stepped structure 32 for clamping the height adjustment shim.
[0046] The clamp handle 1 provides a basis for the user to hold and operate; the clamp arm 2 connects the clamp handle 1 and the clamp head 3, and can be designed with ergonomic structures such as anti-slip texture and spring return, and transmits operating force; the two clamp arms 2 are arranged opposite each other and are respectively connected to one end of the clamp handle 1. The specific movement mode is that when the two clamp arms 2 move towards each other, the clamp device 100 clamps; when the two clamp arms 2 move away from each other, the clamp device 100 releases. The clamp arms 2 can be made of metal or high-strength plastic, etc., and can be set as needed.
[0047] The clamp head 3 is located at the end of the clamp arm 2 away from the clamp handle 1, that is, the front end of the clamp arm 2, and the clamp handle 1 is located at the rear end of the clamp arm 2. Here and below, "front" refers to the side of the clamp head 3 and the side of the clamp handle 1. The two clamp heads 3 are positioned opposite each other and spaced apart to form a clamping space, which facilitates the clamping height adjustment shim and allows the spacing to be adjusted according to the shape of the shim.
[0048] In one optional embodiment, each clamp head 3 has a push-holding portion 31 at its front end, serving as the frontmost functional area of the clamp head 3. At least one push-holding portion 31 has a pointed tip 311 at its front end, the wall thickness of which gradually decreases from back to front, forming a tapered or tapered structure. This makes it easier to insert into the gap below the stop of the hinge pin, facilitating the pushing of the height adjustment shim until it is properly fitted with the pin, thus preventing the height adjustment shim from slipping or shifting. It is understood that the thickness of the pointed tip 311 is less than the thickness of the height adjustment shim to prevent it from being higher than the height adjustment shim when it moves forward, directly abutting against the stop and preventing the height adjustment shim from being pushed into place.
[0049] Meanwhile, a stepped structure 32 is provided on the inner wall of the tip 311 to clamp and limit the height adjustment shim; the "inner" mentioned here and below refers to the direction close to the center line of the clamping device 100, and the direction away from the center line of the clamping device 100 is "outer". The stepped structure 32 forms a limiting fit with the edge of the height adjustment shim to ensure that the clamping device 100 will not slip or misalign when clamping, so as to improve the adjustment accuracy and operation safety.
[0050] The specific working process is as follows: Align the clamp head 3 with the height adjustment shim at the bottom of the refrigerator door, pinch the clamp arm 2, and the clamp arm 2 drives the clamp head 3 to move towards each other. The stepped structure 32 cooperates with the height adjustment shim to achieve stable clamping. The clamp head 3 drives the height adjustment shim to move to be opposite the stop below the shaft pin. The tapered structure of the tip 311 is inserted into the gap between the stop below the shaft pin and the mounting base. Push the clamp device 100 forward. The stepped structure 32 pushes the C-shaped opening of the height adjustment shim into place with the shaft pin, completing the fine adjustment of the door height. After releasing the clamp arm 2, it automatically resets and disengages from the height adjustment shim.
[0051] It is understood that, in another embodiment, after the clamp arm 2 releases the height adjustment shim, the outer edge of the height adjustment shim can be further pushed by the tip 311 to achieve further pushing and ensure that the height adjustment shim is in place.
[0052] The refrigerator door height adjustment clamp device 100 provided in this embodiment of the application has the following technical advantages compared with the prior art:
[0053] The clamping device 100 of this application includes a clamping handle 1, two clamping arms 2, and two clamping heads 3. Each clamping head 3 has a pushing and holding part 31 at its front end. The pushing and holding part 31 has a tip 311. The wall thickness of the tip 311 gradually decreases from back to front to avoid the stop on the hinge pin. This allows the tip 311 to penetrate into the gap below the stop and push the height adjustment shim into place with the pin, preventing the height adjustment shim from slipping or shifting. At the same time, a stepped structure 32 is provided on the inner wall of the tip 311 to form a limiting fit with the edge on the height adjustment shim, ensuring that the clamping device 100 will not slip or shift during clamping, thus improving adjustment accuracy and operational safety.
[0054] In one alternative embodiment, the step structure 32 includes:
[0055] A first wall surface 321, a vertical wall surface 322, and a second wall surface 323. The first wall surface 321 is the inner wall of the tip 311. The top of the vertical wall surface 322 is connected to the first wall surface 321, and the bottom of the vertical wall surface 322 is connected to the second wall surface 323.
[0056] The first wall surface 321 has a first arc-shaped clearance groove 3221 at its front edge, which is used to push against the circumferential outer edge of the height adjustment shim;
[0057] And / or, the leading edge of the second wall 323 is provided with a second arc-shaped relief groove 3231 for avoiding the pivot pin.
[0058] The first wall surface 321 is the inner surface of the tip 311. The two first wall surfaces 321 serve as auxiliary support surfaces to clamp the height adjustment shim. The top of the vertical wall surface 322 is connected to the first wall surface 321, and the bottom of the vertical wall surface 322 is connected to the second wall surface 323. Preferably, the first wall surface 321 and the second wall surface 323 are arranged in parallel to facilitate production and processing. The leading edge of the vertical wall surface 322 is provided with a first arc-shaped relief groove 3221, which fits against the circumferential outer edge contour of the height adjustment shim to prevent slippage; at the same time, it provides local relief to avoid clamping instability due to irregular shape. The first arc-shaped relief groove 3221 is arc-shaped and is recessed inward along the vertical wall surface 322, that is, it extends towards the clamp handle 1.
[0059] The second arc-shaped clearance groove 3231 is located at the leading edge of the second wall surface 323. It is used to avoid the shaft pin structure during clamping, prevent interference with the pushing of the height adjustment shim, and improve the smoothness of the clamping process.
[0060] The radius of the first arc-shaped relief groove 3221 is preferably R4mm-R8mm, and the radius of the second arc-shaped relief groove 3231 can also be preferably set to R4mm-R8mm. In a preferred embodiment, the radius of the first arc-shaped relief groove 3221 is set to R4mm to R8mm, preferably R5mm to R7mm, and most preferably R6mm. This radius range not only improves the fit between the clamp head 3 and the outer edge of the pad, but also enhances the stability during clamping. Meanwhile, the radius of the second arc-shaped relief groove 3231 is also set to R4mm to R8mm, preferably R5mm to R7mm, and most preferably R6mm. This design effectively improves the clamp's ability to avoid the shaft pin structure during clamping, ensuring smooth and reliable operation. This structure significantly improves the versatility and practicality of the clamp in practical applications.
[0061] The above-mentioned device improves clamping accuracy and enhances the fit with the outer edge of the height adjustment shim by using the three-section arrangement of the stepped structure 32, thus preventing slippage.
[0062] In one optional embodiment, one end of the two clamp arms 2 is close to each other and integrally connected to the clamp handle 1, and the other end of the two clamp arms 2 extends along the length direction of the clamp arms 2 and is symmetrically and spaced apart.
[0063] The clamp wall and the clamp handle 1 are integrally formed or fixedly connected, preferably integrally formed. The two clamp arms 2 are very close to each other near the clamp handle 1, or even merged into one, forming a "Y" or "V" shaped structure to enhance the overall rigidity of the clamp, improve the synchronicity and stability of the clamping action, and reduce the deviation or deformation caused by uneven force. The end of the clamp arm 2 away from the clamp handle 1 is a separate free end. The two clamp arms 2 are symmetrically distributed to ensure uniform clamping action. They are also kept at a certain distance to form a clamping space to accommodate shims or other adjustment components. Preferably, an elastic element (such as a spring) can be used to realize the automatic opening and resetting function.
[0064] Example 1
[0065] This embodiment is described based on the above.
[0066] In this embodiment, the clamp arm 2 includes a handle link section 21, a handle opening section 22 and a handle clamping section 23 arranged sequentially from back to front;
[0067] The two handle linkage sections 21 are brought close to each other and integrally connected to the clamp handle 1;
[0068] The handle opening section 22 includes an opening straight section 221 and an opening curved section 222 connected sequentially from back to front. The opening straight section 221 is connected to the handle connecting rod section 21.
[0069] The handle clamping section 23 includes a clamping curved section 231 and a clamping straight section 232 connected sequentially from back to front. The rear end of the clamping curved section 231 is connected to the opening curved section 222, and the clamping straight section 232 is connected to the clamping head 3.
[0070] The handle linkage section 21 connects to the clamp handle 1 and serves as the force input end; the portion near the clamp handle 1 is a straight rod structure. The handle opening section 22 enables the opening and closing action of the clamp arm 2, controlling the opening / closing angle of the clamp head 3. The handle clamping section 23 directly acts on the clamped object (such as a height adjustment shim) to achieve stable clamping. The thickness of the handle linkage section 21 is 1-3mm.
[0071] The open straight segment 221 connects to the handle linkage segment 21, serving as a connecting link for force transmission. The open curved segment 222, with its curved structure, changes the direction of force, optimizing the movement trajectory of the clamp arm 2, increasing the operating stroke, and facilitating clamping or releasing. The clamping curved segment 231 connects to the open curved segment 222, providing buffering and transition for smoother clamping. The clamping straight segment 232 directly connects to the clamp head 3, ensuring the clamp head 3 maintains a stable alignment, thus improving clamping accuracy. The curved segment design optimizes the clamping action path and improves operational smoothness.
[0072] In a preferred embodiment, the clamp arm 2 includes a handle link segment 21, a handle opening segment 22, and a handle clamping segment 23 arranged sequentially from back to front. The two handle link segments 21 are close to each other and integrally connected to the clamp handle 1, forming an integrated support structure. The handle opening segment 22 consists of an opening straight segment 221 and an opening curved segment 222, used to control the opening and closing action of the clamp arm 2. The handle clamping segment 23 consists of a clamping curved segment 231 and a clamping straight segment 232. The clamping straight segment 232 is connected to the clamp head 3, ensuring that the clamp head 3 remains stably aligned during clamping. This structure not only improves the operational stability and clamping accuracy of the clamp but also enhances the adaptability and durability of the clamp in practical use.
[0073] The specific working process is as follows: when the user applies a pinching force, the handle linkage segment 21 moves inward, the opening straight segment 221 causes the opening curved segment 222 to bend and deform, the clamping curved segment 231 guides the clamping straight segment 232 to close, and the clamping head 3 clamps the height adjustment shim; the elastic structure rebounds, the clamping straight segment 232 unfolds outward, the clamping curved segment 231 returns to a cylinder, the opening curved segment 222 causes the opening straight segment 221 to unfold, and the handle linkage segment 21 returns to its initial position.
[0074] In one alternative embodiment, the included angle between the two open straight segments 221 is 5°-15°; such as 5°, 10°, and 15°; it is understood that the included angle between the two open straight segments 221 is the natural opening angle in the unloaded state; it is usually expressed as the included angle between the two center lines or axes; the above range of values provides moderate opening and closing space, good clamping synchronization and stable operation feel.
[0075] In a preferred embodiment, the included angle between the two open straight segments 221 is 5° to 15°. This angle range not only provides a reasonable clamping stroke but also ensures that the pressure applied by the clamp head 3 to the pad is uniform and controllable during clamping. Preferably, the included angle is set to 8° to 10° to further improve the clamping comfort and clamping stability. In addition, in some special applications, the included angle can also be set to 12° to accommodate larger height adjustment pads. This angle design effectively improves the versatility and reliability of the clamp in practical use.
[0076] Furthermore, the opening curve segment 222 is located outside the extension line of the opening straight segment 221, with an outward radius of R250mm-R350mm. The outward structure of the opening curve segment 222 increases the clamping space between the clamping heads 3; improves the visibility and convenience of operation when clamping the pad; and improves the force path of the clamping arm 2, avoiding stress concentration.
[0077] Preferably, the outward radius can be set between R280mm and R320mm, and more preferably R300mm. This radius range ensures structural strength while taking into account the flexibility and operating comfort of the clamp arm 2, significantly improving the stability and reliability of the clamp in practical applications.
[0078] In one optional embodiment, the included angle between the two clamping straight segments 232 is 6°-10°. This included angle is the natural opening angle of the clamping straight segments 232 on the two clamping arms 2 in an unloaded state. 6°-10° provides moderate clamping force, good fit, and stability; it also ensures that the clamping head 3 applies uniform and controllable pressure to the pad during clamping. Preferably, this included angle is set to 7°-9° to further improve the clamping comfort and clamping stability. Furthermore, in certain special application scenarios, the included angle can also be set to 8° to obtain the best clamping effect. This angle design effectively improves the versatility and reliability of the clamp in practical use.
[0079] Specifically, the two clamping curve segments 231 are located inside the extension line of the clamping straight segment 232, with an inward radius of R300mm-R400mm. The inward structure enhances the gripper head 3's wrapping around the pad when closed; improves clamping fit and anti-slip capability; improves the force path of the clamping arm 2, and enhances structural strength. This structure not only improves the fit and clamping stability of the clamping head 3 during clamping, but also effectively enhances the uniformity of force on the clamping arm 2, preventing slippage or displacement during clamping. The inward radius of the clamping curve segment 231 is R300mm to R400mm, preferably R320mm to R380mm, and most preferably R350mm. This radius range, while ensuring structural strength, also considers the flexibility of the clamping arm 2 and clamping comfort, significantly improving the stability and reliability of the clamp in practical applications.
[0080] In one alternative embodiment, the angle between the inner wall of the tip 311 and the centerline of the clamping device 100 is an outward tilt of 160°-170°; and / or, the angle between the outer wall of the tip 311 and the centerline of the clamping device 100 is an inward tilt of 165°-175°. In a preferred embodiment, the angle between the inner wall of the tip 311 and the centerline of the clamping device 100 is an outward tilt of 160°-170°, preferably 163°-168°, and most preferably 165°. This angle range not only improves the smoothness of the clamp when inserting the pad edge, but also enhances the centering capability of the clamping action. In another embodiment, the angle between the outer wall of the tip 311 and the centerline of the clamping device 100 is an inward tilt of 165°-175°, preferably 170°-173°, and most preferably 172°. This angle design effectively improves the fit and stability of the clamp during the clamping process and reduces the risk of slippage. This structure significantly improves the versatility and reliability of the clamps in practical applications.
[0081] In a preferred embodiment, the tip wall thickness of the tip 311 is 0.2mm to 0.5mm, preferably 0.3mm to 0.4mm, and most preferably 0.35mm. This wall thickness range not only improves the smoothness of the clamp when inserting into the edge of the pad, but also enhances the centering capability of the clamping action. Meanwhile, the width of the tip 311 is 7mm to 10mm, preferably 8mm to 9mm, and most preferably 8.5mm. This width design effectively improves the fit and stability of the clamp during clamping and reduces the risk of slippage. This structure significantly improves the versatility and reliability of the clamp in practical applications.
[0082] Example 2
[0083] This embodiment is described based on the above.
[0084] In this embodiment, the clamp arm 2 includes a handle link section 21, a handle opening section 22 and a handle clamping section 23 arranged sequentially from back to front;
[0085] The two handle linkage sections 21 are brought close to each other and integrally connected to the clamp handle 1;
[0086] The handle opening section 22 includes a straight section, which is connected to the handle connecting rod section 21;
[0087] The handle clamping section 23 includes a clamping curved section 231 and a clamping straight section 232 connected sequentially from back to front. The rear end of the clamping curved section 231 is connected to the straight section, and the clamping straight section 232 is connected to the clamping head 3.
[0088] In one embodiment, the clamp arm 2 includes a handle link segment 21, a handle opening segment 22, and a handle clamping segment 23 arranged sequentially from back to front. The two handle link segments 21 are close to each other and integrally connected to the clamp handle 1, forming a stable support structure. The handle opening segment 22 consists of a single straight segment and is connected to the handle link segment 21. The handle clamping segment 23 includes a clamping curved segment 231 and a clamping straight segment 232. The rear end of the clamping curved segment 231 connects to the straight segment of the handle opening segment 22, and the clamping straight segment 232 is fixedly connected to the clamp head 3. This structure simplifies the design of the clamp arm 2 while ensuring clamping functionality, reduces manufacturing difficulty, and is suitable for applications requiring moderate operating stroke and high clamping stability.
[0089] In one alternative embodiment, the included angle between the two open straight segments 221 is 5°-15°; such as 5°, 10°, and 15°; it is understood that the included angle between the two open straight segments 221 is the natural opening angle in the unloaded state; it is usually expressed as the included angle between the two center lines or axes; the above range of values provides moderate opening and closing space, good clamping synchronization and stable operation feel.
[0090] In a preferred embodiment, the included angle between the two open straight segments 221 is 5° to 15°. This angle range not only provides a reasonable clamping stroke but also ensures that the pressure applied by the clamp head 3 to the pad is uniform and controllable during clamping. Preferably, the included angle is set to 8° to 10° to further improve the clamping comfort and clamping stability. In addition, in some special applications, the included angle can also be set to 12° to accommodate larger height adjustment pads. This angle design effectively improves the versatility and reliability of the clamp in practical use.
[0091] In one optional embodiment, the included angle between the two clamping straight segments 232 is 6°-10°. This included angle is the natural opening angle of the clamping straight segments 232 on the two clamping arms 2 in an unloaded state. 6°-10° provides moderate clamping force, good fit, and stability; it also ensures that the clamping head 3 applies uniform and controllable pressure to the pad during clamping. Preferably, this included angle is set to 7°-9° to further improve the clamping comfort and clamping stability. Furthermore, in certain special application scenarios, the included angle can also be set to 8° to obtain the best clamping effect. This angle design effectively improves the versatility and reliability of the clamp in practical use.
[0092] Specifically, the two clamping curve segments 231 are located inside the extension line of the clamping straight segment 232, with an inward radius of R300mm-R400mm. The inward structure enhances the gripper head 3's wrapping around the pad when closed; improves clamping fit and anti-slip capability; improves the force path of the clamping arm 2, and enhances structural strength. This structure not only improves the fit and clamping stability of the clamping head 3 during clamping, but also effectively enhances the uniformity of force on the clamping arm 2, preventing slippage or displacement during clamping. The inward radius of the clamping curve segment 231 is R300mm to R400mm, preferably R320mm to R380mm, and most preferably R350mm. This radius range, while ensuring structural strength, also considers the flexibility of the clamping arm 2 and clamping comfort, significantly improving the stability and reliability of the clamp in practical applications.
[0093] In one alternative embodiment, the angle between the inner wall of the tip 311 and the centerline of the clamping device 100 is an outward tilt of 160°-170°; and / or, the angle between the outer wall of the tip 311 and the centerline of the clamping device 100 is an inward tilt of 165°-175°. In a preferred embodiment, the angle between the inner wall of the tip 311 and the centerline of the clamping device 100 is an outward tilt of 160°-170°, preferably 163°-168°, and most preferably 165°. This angle range not only improves the smoothness of the clamp when inserting the pad edge, but also enhances the centering capability of the clamping action. In another embodiment, the angle between the outer wall of the tip 311 and the centerline of the clamping device 100 is an inward tilt of 165°-175°, preferably 170°-173°, and most preferably 172°. This angle design effectively improves the fit and stability of the clamp during the clamping process and reduces the risk of slippage. This structure significantly improves the versatility and reliability of the clamps in practical applications.
[0094] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0095] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A clamp device for adjusting the height of a refrigerator door, characterized in that, It includes a clamp handle, two clamp arms, and two clamp heads. The two clamp arms are arranged opposite to each other and are respectively connected to one end of the clamp handle, and can move towards or away from each other. The clamp heads are located at the ends of the clamp arms away from the clamp handle, and the two clamp heads are arranged opposite to each other and spaced apart. Each of the clamp heads has a push-gripping part at its front end, and at least one of the push-gripping parts has a pointed tip, the wall thickness of which gradually decreases from back to front; the inner wall of the pointed tip has a stepped structure for engaging with the clamping height adjustment shim.
2. The clamp device for adjusting the height of a refrigerator door according to claim 1, wherein The stepped structure includes: A first wall, a vertical wall, and a second wall, wherein the first wall is the inner wall of the tip, the top of the vertical wall is connected to the first wall, and the bottom of the vertical wall is connected to the second wall; The vertical wall surface is provided with a concave first arc-shaped relief groove for pushing against the circumferential outer edge of the height adjustment shim; And / or, the leading edge of the second wall is provided with a second arc-shaped relief groove for avoiding the pivot pin.
3. The clamp device for adjusting the height of a refrigerator door according to claim 1, wherein One end of each of the two clamp arms is close to each other and integrally connected to the clamp handle. The other ends of the two clamp arms extend along the length of the clamp arms and are symmetrically and spaced apart.
4. The clamp device for adjusting the height of a refrigerator door according to claim 3, wherein The clamp arm includes a handle linkage section, a handle opening section, and a handle clamping section arranged sequentially from back to front. The two handle linkage segments are brought close to each other and integrally connected to the clamp handle; The handle opening section includes a straight opening section and a curved opening section connected sequentially from back to front, and the straight opening section is connected to the handle connecting rod section. The handle clamping section includes a clamping curved section and a clamping straight section connected sequentially from back to front. The rear end of the clamping curved section is connected to the opening curved section, and the clamping straight section is connected to the clamp head.
5. The clamp device for adjusting the height of a refrigerator door according to claim 4, wherein The included angle between the two open straight segments is 5°-15°.
6. The clamp device for adjusting the height of a refrigerator door according to claim 5, wherein The opening curve segment is located outside the extension line of the opening straight segment, and the outward radius is R250mm-R350mm.
7. The clamp device for adjusting the height of a refrigerator door according to claim 4, wherein The included angle between the two clamping line segments is 6°-10°.
8. The clamp device for adjusting the height of a refrigerator door according to claim 7, wherein The two clamping curve segments are located inside the extension of the clamping straight line segment, with an inward radius of R300mm-R400mm.
9. The clamp device for adjusting the height of a refrigerator door according to claim 1, wherein The angle between the inner wall of the tip and the center line of the clamping device is 160°-170° outward. And / or, the angle between the outer wall of the tip and the center line of the clamping device is 165°-175° inward.
10. The clamp device for adjusting the height of a refrigerator door according to claim 2, wherein The tip has a wall thickness of 0.2mm-0.5mm and a width of 7mm-10mm.