A hook structure

Abstract

The utility model discloses a hook structure, including the fixed plate of fixed on the wall surface, the fixed plate is equipped with the hook body on the side of wall surface's back, the fixed plate is equipped with the pasting layer on the side of wall surface's face, the length of the fixed plate along the direction of perpendicular ground is L, the hook body is used for hanging the heavy object, the hook body includes the connecting portion, the highest point of connecting portion and the distance of the bottom end of fixed plate's projection length in the direction of perpendicular ground is H, wherein 18%L <= H <= 50%L. The utility model has the advantages of can even distribution stress, strengthen the bearing capacity and improve the back glue adhesion stability.

Description

Technical Field

[0001] This utility model relates to the field of hook technology, and in particular to a hook structure. Background Technology

[0002] In the current market, adhesive hooks are widely used as small tools in home and office environments for hanging lightweight items. However, most commercially available adhesive hooks often lack scientific basis and precise adjustment in the design of the hook position.

[0003] This uncertainty causes the hook to not distribute the load evenly when under stress, easily leading to torque concentration. Torque concentration can cause excessive stress at specific locations, increasing the risk of material fatigue and reducing the hook's load-bearing capacity. Secondly, due to the uneven distribution of force, the adhesive layer on the back of the hook is prone to excessive local pressure, leading to deformation of the adhesive material. The direct consequence of adhesive deformation is adhesive failure, significantly reducing the hook's adhesion performance. During use, adhesive deformation and adhesive failure often cause the hook to detach from walls or other substrates, making it impossible to securely hang items for extended periods.

[0004] Therefore, it is necessary to further improve and perfect the existing technology to overcome these shortcomings, and this utility model is made based on this situation. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a hook structure that can evenly distribute force, enhance load-bearing capacity, and improve the adhesive stability of the backing.

[0006] This utility model is achieved through the following technical solution:

[0007] To solve the above-mentioned technical problems, this utility model provides a hook structure, including a fixing plate fixed to a wall. The fixing plate has a hook body on the side facing away from the wall and an adhesive layer on the side facing the wall. The length of the fixing plate in the direction perpendicular to the ground is L. The hook body is used to suspend heavy objects. The hook body includes a connecting part. The distance between the highest point of the connecting part and the bottom end of the fixing plate is projected as H in the direction perpendicular to the ground, where 18%L≤H≤50%L.

[0008] In order to further solve the technical problem to be solved by this utility model, in the hook structure provided by this utility model, H further satisfies 22%L≤H≤28%L.

[0009] To further address the technical problems to be solved by this utility model, this utility model provides a hook structure in which the hook body is detachably connected to the fixing plate via a connecting mechanism.

[0010] In order to further solve the technical problem to be solved by this utility model, the present utility model provides a hook structure in which the connecting mechanism includes a slot provided on the fixed plate and a buckle provided on the hook body, the buckle being inserted into the slot.

[0011] In order to further solve the technical problems to be solved by this utility model, the hook structure provided by this utility model has the hook body centrally disposed on the fixing plate in the left-right direction.

[0012] In order to further solve the technical problem to be solved by this utility model, the hook structure provided by this utility model further includes an anti-detachment part, which is used to prevent heavy objects from falling off.

[0013] To further address the technical problems to be solved by this utility model, the present utility model provides a hook structure in which the adhesive layer includes pressure-sensitive adhesive, and the adhesive layer can be removed by stretching.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] In this invention, when the height H of the highest point A (the highest point of the connection part, the position where the weight is suspended) from the bottom of the fixing plate meets the following conditions: 18%L≤H≤50%L, preferably 22%L≤H≤28%L, the force can be evenly distributed, excessive stress concentration can be avoided, and the load-bearing capacity of the hook structure and the adhesive stability of the backing can be improved. Attached Figure Description

[0016] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of Embodiment 1 of this utility model;

[0018] Figure 2 This is a side view of Embodiment 1;

[0019] Figure 3 This is a schematic diagram of different hook positions in Embodiment 1;

[0020] Figure 4 This is a schematic diagram of the finite element analysis of the hook force in Example 1;

[0021] Figure 5 This is a three-dimensional structural diagram of Embodiment 2 of this utility model. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figures 1 to 4 The diagram shows a hook structure, including a fixing plate 1 (usually glued to the wall) that can be fixed to a wall. The side of the fixing plate 1 facing away from the wall has a hook 2 for suspending heavy objects, and the side of the fixing plate 1 facing the wall has an adhesive layer. The length of the fixing plate 1 in the vertical direction (perpendicular to the ground) is L, and the hook 2 includes a connecting portion 21. The point where the hook 2 bears the force when suspending a heavy object is the highest point of the connecting portion 21, i.e., position A. The height of A from the bottom of the fixing plate 1 (its projected length in the vertical direction) is H, preferably satisfying the following condition: 18%L ≤ H ≤ 50%L.

[0024] The connecting part 21 has a centrally symmetrical structure and can be cylindrical or cuboid in shape. The central axis of symmetry of the connecting part 21 is perpendicular to the wall, and its upper edge remains horizontal. Since the upper edge of the connecting part 21 is parallel to the ground, any point on this upper edge can be taken as the highest point of the connecting part 21, i.e., the highest point A.

[0025] Further preferably, the height H satisfies 22%L≤H≤28%L, at which height the load-bearing capacity is even better. Even more preferably, the height H equals 27%L.

[0026] After multiple tests, it was found that this design can evenly distribute the force, avoid excessive stress concentration, and improve the load-bearing capacity of the hook structure and the adhesive stability of the backing.

[0027] The following measurements were taken with the fixed plate 1 having a length of 66mm perpendicular to the ground (L = 66mm), and the back of the fixed plate 1 consisting entirely of adhesive layers. The ultimate load-bearing capacity of the hook 2 was measured under different values ​​of H. Specifically, the measurement method involved adjusting the projected length H of the distance between the highest point A of the connecting part 21 and the bottom end of the fixed plate 1 in the direction perpendicular to the ground, and conducting an ultimate load-bearing test to determine the number of days the hook could remain fixed to the fixed plate. Simultaneously, finite element analysis was performed to determine the maximum load-bearing capacity for which the hook could remain fixed to the fixed plate for the longest period.

[0028] Test data table for one batch of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0029] Serial Number H(mm) Number of days the hook remains fixed to the mounting plate. 1 6 4 2 9 16 3 12 34 4 15 52 5 18 68 6 21 49 7 24 48 8 27 43 9 30 31 10 33 30 11 36 28

[0030] Table of test data for two batches of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0031]

[0032]

[0033] Table of test data for 3 batches of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0034] Serial Number H(mm) Number of days the hook remains fixed to the mounting plate. 1 6 5 2 9 16 3 12 33 4 15 48 5 18 61 6 21 46 7 24 44 8 27 38 9 30 33 10 33 32 11 36 28

[0035] Among them, such as Figure 4 As shown, taking the cylindrical connecting part 21 as an example, the minimum force on the hook structure as a whole is at the top of the fixing plate 1, and the maximum force on the hook structure as a whole is at the upper edge of the connecting part 21 (the connection position between the hook body 2 and the fixing plate 1).

[0036] The experimental data above shows that the load-bearing performance is best when L = 66 mm and H = 18 mm, and the hook remains fixed to the fixed plate for the longest period of time. In other words, the load-bearing capacity is best and the hook remains fixed to the fixed plate for the longest period of time when the projected length H of the distance between the highest point A of the connecting part 21 and the bottom end of the fixed plate 1 in the direction perpendicular to the ground is 27% (approximately 1 / 4) of the length L of the fixed plate 1 in the direction perpendicular to the ground. Furthermore, when 18%L ≤ H ≤ 50%L, the load-bearing capacity is good and the hook remains fixed to the fixed plate for a relatively long period of time. Moreover, when H is 15–18 mm, i.e., 22%L ≤ H ≤ 28%L, the load-bearing capacity is even better and the hook remains fixed to the fixed plate for an even longer period of time.

[0037] Two sets of experiments were conducted for comparison: the ultimate load-bearing test data of hooks 2 at different heights when L = 30mm (the back of fixing plate 1 is all adhesive layer) are shown in the table below:

[0038] Test data table for one batch of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0039] Serial Number H(mm) Duration of testing days 1 3 4 2 6 9 3 8 14 4 10 10 5 12 9 6 14 8 7 16 7

[0040] Table of test data for two batches of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0041]

[0042]

[0043] Table of test data for 3 batches of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0044] Serial Number H(mm) Duration of testing days 1 3 4 2 6 10 3 8 15 4 10 12 5 12 10 6 14 9 7 16 7

[0045] Similarly, the experimental data above shows that, considering the hook as a whole (30mm long), the test results indicate that the load-bearing performance is best and the durability is longest when the highest point A is at H=8mm; in other words, the load-bearing capacity is best and the durability is longest when the load-bearing weight is at 27% (approximately 1 / 4) of the hook's main body. Furthermore, a good load-bearing capacity and relatively long durability are achieved when L≤H≤50%L.

[0046] When L = 100mm (the back of the fixing plate 1 is all adhesive layer), the ultimate load-bearing test data of hooks 2 at different heights are shown in the table below:

[0047] Test data table for one batch of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0048] Serial Number H(mm) Duration of testing days 1 6 30 2 11 42 3 16 70 4 21 118 5 26 132 6 31 117 7 36 110 8 41 96 9 46 74 10 51 71

[0049] Table of test data for two batches of samples (at normal temperature and humidity) (1.5kg hanging weight)

[0050] Serial Number H(mm) Duration of testing days 1 6 31 2 11 40 3 16 69 4 21 116 5 26 134 6 31 115 7 36 108 8 41 76 9 46 72 10 51 68

[0051] Table of test data for 3 batches of samples (room temperature and humidity)

[0052] Serial Number H(mm) Duration of testing days 1 6 28 2 11 37 3 16 68 4 21 117 5 26 130 6 31 112 7 36 106 8 41 100 9 46 74 10 51 68

[0053] Similarly, the experimental data above shows that, considering the hook as a whole (100mm long), the test results indicate that the load-bearing performance is best and the durability is longest when the highest point A is at H=26mm; in other words, the load-bearing capacity is best and the durability is longest when the load-bearing weight is at 26% (approximately 1 / 4) of the hook's main body. Furthermore, a good load-bearing capacity and relatively long durability are achieved when L≤H≤50%L.

[0054] The following is a table of durability test data for hook 2 at different heights (L=100mm) (simulated environment: temperature 25℃, air humidity 80%):

[0055]

[0056]

[0057] (A load-bearing test was conducted on the product, with a quantity of 50. The number of drops X≥2 is NG, and X<2 is OK.) The above experimental data shows that, after excluding random errors, the durability of the hook is better within the range of 18%L≤H≤50%L, and the durability is even better at H, which is about 1 / 4L.

[0058] Durability tests were also conducted simultaneously on L=65mm and L=30mm. The test results were consistent with those for L=100mm, showing that the hook has the best durability when the load-bearing capacity is within the range of 18%L≤H≤50%L of the hook body.

[0059] Furthermore, preferably, the hook 2 also includes an anti-slip portion 22 to prevent the heavy object from falling off. More specifically, the anti-slip portion 22 extends outward and upward; that is, the anti-slip portion 22 is upturned. The upturned anti-slip portion 22 prevents the heavy object from falling off after being suspended by the hook 2, and also allows the hook to more effectively conform to the wall surface, forming a more stable support. This design, by adjusting the torque distribution, makes the entire system more balanced under stress, thereby significantly reducing the possibility of deformation caused by gravity.

[0060] like Figures 1 to 4 As shown, in one embodiment of this utility model (Embodiment 1), the hook body 2 and the fixing plate 1 are integrally connected. Such a structure is relatively simple, easy to manufacture, and has high structural strength.

[0061] like Figure 5 The illustration shows another embodiment of this utility model (Embodiment Two), which differs from Embodiment One in that the hook body 2 is detachably connected to the fixing plate 1 via a connecting mechanism. This facilitates the replacement of hook bodies of different shapes according to different usage requirements.

[0062] Preferably, the connecting mechanism includes a slot 11 on the fixing plate 1 and a buckle 23 on the hook body 2, the buckle 23 being inserted into the slot 11.

[0063] Furthermore, the adhesive layer is a pressure-sensitive adhesive that can be removed by stretching. This adhesive layer allows the hook structure to be peeled off and reused repeatedly.

[0064] Preferably, the hook 2 is centrally positioned on the fixing plate 1 along the left-right direction. This ensures more uniform force distribution in the width direction.

[0065] Regarding the aspect ratio of the fixing plate 1 (the back of the fixing plate 1 is all adhesive layer):

[0066] Referring to the table below, with the same length L of the fixing plate 1, the overall proportions of the hook body remain unchanged. The length L of the fixing plate 1 is 1-2 times (preferably 1.4 times) of the width W. Through experiments, when the maximum value at the highest point of the hook is <21 N / mm 2 The optimal force distribution on the hook body (when a set of hooks has the same characteristic dimensions, the one with the smaller maximum value at the highest point is generally the best solution; the larger the maximum value at the highest point of the hook, the worse the overall load-bearing capacity of the hook. Conversely, the smaller the maximum value at the highest point of the hook, the stronger the overall load-bearing capacity of the hook). The hook body is located at 1 / 4 of the length of the fixed plate 1 and centered in the width direction of the fixed plate 1.

[0067]

[0068] Refer to the following table. When the width W of the fixing plate 1 remains unchanged and the overall proportion of the hook body remains the same, the force on the hook body is better when the length L of the fixing plate 1 is 4 - 6 times (preferably 4.3 times or 5.3 times) the width W.

[0069]

[0070]

[0071] (For the 3 kg hanging weight test of the hook, if the bearing days are greater than 10 days, it is qualified; otherwise, it is unqualified.) In summary, in the hook structure of the present utility model, when the height H from the highest point A to the bottom end of the fixing plate satisfies the following condition: 18%L ≤ H ≤ 50%L, preferably 27%, it can evenly distribute the force, avoid excessive stress concentration, and improve the bearing capacity of the hook structure and the adhesive stability of the back glue. When the length L of the fixing plate 1 is the same, the overall proportion of the hook body remains the same, and the force on the hook body is better when the length L of the fixing plate 1 is 1 - 2 times (preferably 1.4 times) the width W. When the width W of the fixing plate 1 remains unchanged and the overall proportion of the hook body remains the same, the force on the hook body is better when the length L of the fixing plate 1 is 4 - 6 times (preferably 4.3 times or 5.3 times) the width W.

Claims

1. A hook structure, characterized in that: The device includes a fixing plate (1) fixed to the wall, a hook (2) on the side of the fixing plate (1) facing away from the wall, an adhesive layer on the side of the fixing plate (1) facing the wall, the length of the fixing plate (1) in the direction perpendicular to the ground is L, the hook (2) is used to suspend heavy objects, the hook (2) includes a connecting part (21), the distance between the highest point of the connecting part (21) and the bottom end of the fixing plate (1) in the direction perpendicular to the ground is H, where 18%L≤H≤50%L.

2. The hook structure according to claim 1, characterized in that: H further satisfies 22%L≤H≤28%L.

3. The hook structure according to claim 1, characterized in that: The hook (2) is detachably connected to the fixing plate (1) via a connecting mechanism.

4. A hook structure according to claim 3, characterized in that: The connecting mechanism includes a slot (11) on the fixing plate (1) and a buckle (23) on the hook body (2), the buckle (23) being inserted into the slot (11).

5. A hook structure according to claim 1, characterized in that: The hook (2) is centrally positioned on the fixing plate (1) in the left-right direction.

6. A hook structure according to claim 1, characterized in that: The hook body (2) also includes an anti-detachment part (22) for preventing the heavy object from falling off.

7. A hook structure according to claim 1, characterized in that: The adhesive layer includes pressure-sensitive adhesive, and the adhesive layer can be removed by stretching.

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