Limiting structure and hanger

Abstract

The utility model relates to the technical field of limiting devices, in particular to a limiting structure and a hanging frame. The limiting structure comprises a body and a limiting piece, the body is provided with a limiting groove, and the limiting groove is provided with an opening allowing the limited structural piece to enter and exit; the limiting piece comprises an elastic part, a driving part and a blocking part, the elastic part is fixedly arranged on the body, the blocking part is connected with the elastic part, the driving part is connected with the elastic part, the driving part can drive the elastic part to generate elastic deformation and enable the blocking part to be switched to the second station from the first station, and the elastic part is used for driving the blocking part to return to the first station from the second station; when the blocking part is located at the first station, the blocking part blocks at least part of the opening, and when the blocking part is located at the second station, the blocking part avoids the opening of the limiting groove. Compared with a traditional limiting device, the limiting structure has the advantages that the number of structural parts can be reduced, and the manufacturing technological process and the production cost are remarkably reduced.

Description

Technical Field

[0001] The present application relates to the technical field of limiting devices, and in particular to a limiting structure and a hanging bracket. Background Art

[0002] A bracket usually refers to a metal or plastic structure used to fix or support an object or device. For example, in the field of communication technology, a wireless access point (AP) is usually installed on the wall of a building or on the ceiling of an indoor building through a bracket. AP is a network device through which wireless terminals, such as smartphones, tablets, and laptops, are connected to a wired network to access resources on the Internet or a local area network.

[0003] In order to fix the structural part to the bracket, the structural part usually includes a protrusion, and the bracket is provided with a groove corresponding to the protrusion, and the protrusion can extend into the groove. In order to facilitate installation and disassembly, the size of the groove should be larger than the outer size of the structural part. In order to prevent the protrusion from falling out of the groove, a limit device is usually required to limit the protrusion. However, the traditional limit device has many structural parts and is costly. For example, in the AP bracket, the limit device includes a latch, a screw, a movable clamp and a spring, and there are many parts. The cost of the above limit device accounts for more than 30% of the total cost of the bracket. Utility Model Content

[0004] The present application discloses a limiting structure and a hanging bracket to solve the problem that the traditional limiting device has many structural parts and high cost.

[0005] In order to achieve the above objectives, this application provides the following technical solutions:

[0006] In the first aspect, the present application provides a limiting structure, which includes a main body and a limiting member, the main body is provided with a limiting groove, and the limiting groove has an opening for allowing the limited structural member to enter and exit; the limiting member includes an elastic part, a driving part and a blocking part, the elastic part is fixed to the main body, the blocking part is connected to the elastic part, and the driving part is connected to the elastic part, the driving part is used to drive the elastic part to undergo elastic deformation and switch the blocking part from a first station to a second station, and the elastic part can drive the blocking part to return from the second station to the first station; wherein, when the blocking part is in the first station, the blocking part blocks at least part of the opening, and when the blocking part is in the second station, the blocking part avoids the opening of the limiting groove.

[0007] Furthermore, the main body includes a mounting surface, one end of the elastic part facing away from the blocking part is fixedly arranged on the mounting surface, a first angle is formed between the elastic part and the mounting surface, the first angle is toward the driving part, and the first angle α is less than 90°.

[0008] Furthermore, the blocking portion includes a first blocking surface facing the opening, and the first blocking surface is used to prevent the structural member from escaping from the limiting groove.

[0009] Furthermore, the blocking portion includes a second blocking surface, the second blocking surface is away from the driving portion, the second blocking surface is adjacent to the first blocking surface, and the angle between the first blocking surface and the second blocking surface is a right angle to prevent the structural member from escaping from the limiting groove in the first working position.

[0010] Furthermore, the end of the driving part away from the second blocking surface includes a handle unit, and the end of the handle unit is provided with an arc chamfer.

[0011] Furthermore, the driving portion extends in a direction away from the second blocking surface, and the handle unit includes a pressing surface, which is connected to the first blocking surface, and from one end connected to the first blocking surface, the pressing surface extends along the extension direction of the driving portion toward a direction away from the opening.

[0012] Further, the driving portion and the elastic portion form an L-shaped structure, and the driving portion and the elastic portion form a second angle, the second angle is away from the limiting groove, and the second angle β is 70°≤β≤110°.

[0013] Furthermore, the limiting structure is an integrally formed structure.

[0014] Furthermore, the limiting structure also includes a guide groove communicated with the limiting groove, and the guide groove is used to guide the structural member to enter the limiting groove through the opening.

[0015] In a second aspect, the present application provides a hanger, which includes the limiting structure of the first aspect.

[0016] The present application provides a limiting structure, wherein the structural member is first loaded into the limiting groove, and when the blocking portion is in the first position, the blocking portion can block the structural member from escaping from the opening of the limiting groove, thereby playing a limiting role. When the structural member needs to be taken out of the limiting groove, an external force acts on the driving portion, and the driving portion can drive the elastic portion to undergo elastic deformation and switch the driving portion from the first position to the second position. Specifically, the driving portion drives the blocking portion to move in a direction away from the opening of the limiting groove, so that the structural member can be detached from the limiting groove; when the external force is removed, the elastic portion returns to its original state and drives the blocking portion to return to the first position. The limiting member of the limiting structure only includes a blocking portion, a driving portion, and an elastic portion. Compared with the traditional limiting device, it can reduce the number of structural members and significantly reduce the manufacturing process and production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of an AP installed on a traditional rack;

[0018] Figure 2 This is a schematic structural diagram of a position limiting structure at a first working position according to an embodiment of the present application;

[0019] Figure 3 This is a schematic structural diagram of a position limiting structure at a second working position according to an embodiment of the present application;

[0020] Figure 4 This is a schematic structural diagram of a limiting structure of an embodiment of the present application;

[0021] Figure 5 This is a schematic structural diagram of a limiting structure of an embodiment of the present application;

[0022] Figure 6 This is a schematic structural diagram of a position-limiting member according to an embodiment of the present application;

[0023] Figure 7 A schematic structural diagram of a position limiting structure in another embodiment of the present application;

[0024] Figure 8 This is a schematic structural diagram of a position limiting member in another embodiment of the present application;

[0025] Fig. 9 This is a schematic diagram of a structure in which an AP is fixed on a rack according to an embodiment of the present application;

[0026] Fig.10 This is a structural schematic diagram of another embodiment of the present application in which an AP is fixed on a bracket.

[0027] Reference numerals: 10, 100-hanging bracket; 20-limiting device; 21-pin; 22-spring; 23-screw; 24-movable clamping member; 200-limiting member; 210-elastic part; 211-first surface; 212-second surface; 220-driving part; 221-handle unit; 221a-arc chamfer; 221b-pressing surface; 222-third surface; 223-fourth surface; 230-blocking part; 231-first blocking surface; 232-second blocking surface; 233-guiding surface; 300-body; 310-installing surface; 40, 400-structural member; 41, 410-protruding part; 42-pin; 50, 500-AP;

[0028] 01-limiting groove; 02-opening; 03-guide groove; 04-avoidance opening. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Figure 1 This is a schematic diagram of the structure of AP installed on a traditional rack. Figure 1 , the conventional hanger 10 is provided with a groove (not shown in the figure), and the structural member 40 includes a protrusion 41. When the structural member 40 is fixed to the hanger 10, the protrusion 41 needs to be slid into the groove through the opening of the groove. However, in order to facilitate installation and removal, the size of the groove is larger than the outer size of the structural member 40. In order to prevent the protrusion 41 from falling out of the groove, a limiting device 20 is usually required to limit the protrusion 41. The limiting device 20 of the conventional hanger has many structural parts and is relatively expensive, such as Figure 1 As shown, the limit device includes a latch 21, a spring 22, a screw 23 and a movable clamp 24. The latch 21 and the spring 22 cooperate to drive the movable clamp 24 to move relative to the pin 42 connected to the structural member 40, so that the movable clamp 24 is clamped with the pin 42 or the two are unclamped. When the bracket 10 does not need to fix the structural member 40, the screw 23 is used to lock the movable clamp 24 to prevent it from shaking. The cost of the above-mentioned limit device 20 accounts for more than 30% of the total cost of the bracket 10. Among them, when the bracket 10 is applied to the field of communication technology, the structural member 40 can be AP50.

[0031] In view of this, a limiting structure is provided in an embodiment of the present application. Figure 2 This is a schematic structural diagram of a limiting structure at a first working position according to an embodiment of the present application. Figure 3 This is a schematic structural diagram of a limiting structure at the second working position according to an embodiment of the present application. Figure 4 This is a schematic diagram of the structure of a limiting structure of an embodiment of the present application. Please refer to Figures 2 to 4 The limiting structure includes a main body 300 and a limiting member 200. Figure 4 As shown, the body 300 is provided with a limiting groove 01, and the limiting groove 01 has an opening 02 for allowing the limited structure 400 to enter and exit. Figure 2 and Figure 3 As shown, the limiter 200 includes an elastic part 210, a driving part 220 and a blocking part 230, wherein the elastic part 210 is fixed to the body 300, the blocking part 230 is connected to the elastic part 210, and the driving part 220 is connected to the elastic part 210. Under the action of external force, the driving part 220 can drive the elastic part 210 to move and elastically deform, so that the blocking part 230 switches from the first station to the second station; when the external force is removed, the elastic part 210 returns to its original state and drives the blocking part 230 to return from the second station to the first station. Figure 2 As shown, when the blocking portion 230 is in the first position, the blocking portion 230 faces the opening 02 of the limiting groove 01, and the blocking portion 230 blocks at least part of the opening 02 of the limiting groove 01 to prevent the structural member 400 from escaping from the limiting groove 01 through the opening 02, thereby limiting the structural member 400. Figure 3 As shown, when the blocking portion 230 is in the second position, the blocking portion 230 is driven by the driving portion 220 to move away from the limiting groove 01 to avoid the opening 02 of the limiting groove 01 , so that the structural member 400 can be separated from the limiting groove 01 through the opening 02 .

[0032] The stopper 200 can be an integrally formed structure, thus effectively reducing the number of structural parts. In addition, the material of the stopper 200 is not specifically limited in the present application, as long as the elastic part 210 is an elastic material. Specifically, the elastic part 210 and the stopper 200 can be made of plastic as a whole, which can significantly reduce the production cost compared to metal structural parts.

[0033] It should be noted that the connection between the blocking portion 230 and the elastic portion 210 means that the two can be directly connected, or they can be indirectly connected through other components, such as the driving portion 220. Similarly, the connection between the driving portion 220 and the elastic portion 210 means that the two can be directly connected or indirectly connected, which can be set according to actual needs.

[0034] It is understandable that the present application does not specifically limit the main body 300. The main body 300 only needs to include the above-mentioned limit groove 01, and the structure of the main body 300 can be designed according to the specific application field and purpose. Among them, the main body 300 can be a plate-shaped or block-shaped structure that only includes the above-mentioned limit groove 01. The main body 300 can also be provided with other structural units according to the specific function. For example, the main body 300 can be a bracket 100 for fixing AP500, and the bracket 100 needs to have a mounting hole for installing screws connected to the wall. Similarly, the present application does not limit the specific type and structure of the structural member 400. For example, the structural member 400 can be a screw, a bolt or a protruding structure of other components.

[0035] Reference Figure 4 The limiting structure further includes a guide groove 03 connected to the limiting groove 01, and the guide groove 03 is used to guide the structural member 400 to enter the limiting groove 01 through the opening 02. The guide groove 03 has an arc-shaped inner wall, which helps the structural member 400 slide into the limiting groove 01 along the arc-shaped inner wall.

[0036] Figure 5 This is a schematic diagram of the structure of a limiting structure of an embodiment of the present application. Figure 4 and Figure 5 The main body 300 is provided with an avoidance opening 04, the driving part 220 and the elastic part 210 form an L-shaped structure, the driving part 220 extends in a direction away from the blocking part 230, and passes through the above-mentioned avoidance opening 04 to extend to the outside of the main body 300, so as to facilitate the staff to push the driving part 220.

[0037] Among them, the main body 300 includes a mounting surface 310, and one end of the elastic part 210 facing away from the blocking part 230 is fixed on the mounting surface 310. A first angle α is formed between the elastic part 210 and the mounting surface 310, and the first angle α is toward the driving part 220. The first angle α is less than 90°, which can increase the elastic deformation of the elastic part 210 on the basis of the same displacement of the driving part 220. Therefore, it can avoid the avoidance opening 04 being too large, thereby affecting the strength of the side wall of the main body 300.

[0038] It is worth mentioning that due to the limitation of process conditions or other factors, there may be some deviations or errors in the actual process, resulting in that the "L-shaped structure" described above may not be completely accurate. For example, the "L-shaped structure" described above may be an L-shaped structure allowed within the allowable error range. Of course, the "L-shaped structure" can also be understood as a "standard L-shaped structure" or a "similar L-shaped structure". Therefore, as long as the "L-shaped structure" described above roughly meets the above conditions, it belongs to the protection scope of this application.

[0039] You can continue to refer to Figure 4 The driving part 220 and the elastic part 210 form a second angle β, the second angle β deviates from the limiting groove 01, the second angle β is 70°≤β≤110°, and the second angle β is within the above range. When the external force acting on the driving part 220 is the same, the elastic part 210 can produce an elastic deformation with a larger deformation amount.

[0040] You can continue to refer to Figure 5 The blocking portion 230 includes a guide surface 233, which is an inclined surface or an arc surface, and points to the direction of the limiting groove 01 along the guide groove 03. The gap between the guide surface 233 and the inner wall of the guide groove 03 gradually decreases. During the installation process of the structural member 400, when the structural member 400 contacts the guide surface 233, the guide surface 233 can guide the structural member 400 to enter the limiting groove 01. Specifically, when the structural member 400 enters the guide groove 03 and moves toward the limiting groove 01, the structural member 400 gradually approaches and squeezes the guide surface 233, so that the blocking portion 230 moves toward the avoidance opening 04. At the same time, the elastic portion 210 is deformed under the squeezing of the structural member 400. When the structural member 400 slides into the limiting groove 01, the elastic portion 210 drives the blocking portion 230 to return to the first position.

[0041] Figure 6 This is a schematic diagram of the structure of a limiter according to an embodiment of the present application, referring to Figure 6The blocking portion 230 includes a first blocking surface 231 facing the opening 02 of the limiting groove 01, and the first blocking surface 231 is used to prevent the structural member 400 from leaving the limiting groove 01. The first blocking surface 231 can increase the contact area with the structural member 400. For example, under vibration conditions, the structural member 400 may abut against the first blocking surface 231. The first blocking surface 231 is a planar structure, which can increase the contact area between the blocking portion 230 and the structural member 400, effectively reduce the pressure between the two, avoid mutual wear and damage, and extend their service life.

[0042] It can be understood that in order to limit the structural member 400 from disengaging from the limiting groove 01 at the first working station, and at the same time, facilitate the structural member 400 to quickly disengage from the limiting groove 01 at the second working station, the ratio of the area of ​​the first blocking surface 231 to the area of ​​the surface of the structural member 400 facing the blocking portion 230 is 1 / 2-2 / 3.

[0043] Continue to refer to Figure 6 The blocking portion 230 includes a second blocking surface 232, the second blocking surface 232 is away from the driving portion 220, the second blocking surface is adjacent to the first blocking surface 231, and the angle between the first blocking surface 231 and the second blocking surface 232 is a right angle. Because when the angle between the two is not a right angle, a guide surface will be formed, which may cause the structural member 400 to slide out of the limiting groove 01 along the guide surface. The right angle between the two can prevent the structural member 400 from detaching from the limiting groove 01 at the first working station, and the processing technology is relatively simple.

[0044] In some embodiments of the present application, the driving portion 220 extends in a direction D1 away from the second blocking surface 232, and the end of the driving portion 220 away from the second blocking surface 232 includes a handle unit 221. The end of the handle unit 221 is provided with an arc chamfer 221a, which can avoid scratches with other components or personnel.

[0045] Continue to refer to Figure 5 and Figure 6 The handle unit 221 includes a pressing surface 221b, which is connected to the first blocking surface 231, and from one end connected to the first blocking surface 231, the pressing surface 221b extends along the extension direction of the driving portion 220 in a direction away from the opening 02, that is, an angle θ is formed between the first blocking surface 231 and the pressing surface 221b, the angle θ is away from the blocking portion 230, and the angle θ is less than 90°, so that the external force N acting perpendicularly on the pressing surface 221b can be decomposed into two mutually perpendicular first force N1 and second force N2, the first force N1 can push the driving portion 220 close to the elastic portion 210, and the second force N2 can push the driving portion 220 close to the mounting surface 310.

[0046] Continue to refer to Figure 6The elastic part 210 includes a first surface 211 and a second surface 212 connected to the first surface 211. The first surface 211 and the second surface 212 are perpendicular to each other. When the elastic part 210 is elastically deformed under the action of the driving part 220, the first surface 211 may bend. The size of the second surface 212 along the extension direction D1 of the driving part is smaller than the size of the first surface 211 along the second direction D2, so as to facilitate the elastic deformation of the elastic part 210. The size of the second surface 212 along the extension direction D1 of the driving part is relatively small, which helps to improve the deformation ability of the elastic part 210. The size of the first surface 211 along the second direction D2 is relatively large, which can improve the anti-bending ability of the elastic part 210 and increase the overall structural strength. The extension direction D1 of the driving part is perpendicular to the second direction D2.

[0047] Similarly, it can be known that the driving part 220 includes a third surface 222 and a fourth surface 223 connected to the third surface 222, the third surface 222 and the fourth surface 223 are perpendicular to each other, and the size of the third surface 222 along the third direction D3 is larger than the size of the fourth surface 223 along the second direction D2, which helps to improve the bending resistance of the driving part 220 and increase the overall structural strength.

[0048] Another limiting structure is also provided in the embodiment of the present application. Figure 7 This is a schematic diagram of the structure of a limiting structure of another embodiment of the present application. Figure 8 This is a schematic diagram of the structure of another embodiment of the present application, referring to Figure 7 and Figure 8 The limiting structure includes a body 300 and a limiting member 200. The body 300 is provided with a limiting groove 01. The limiting groove 01 has an opening 02 for allowing the limited structure 400 to enter and exit. The limiting member 200 includes an elastic part 210, a driving part 220 and a blocking part 230, wherein the elastic part 210 is fixed to the mounting surface 310 of the body 300, the driving part 220 and the blocking part 230 are connected through the elastic part 210, the elastic part 210 and the blocking part 230 form a T-shaped structure, and the blocking part 230 faces the opening 02 of the limiting groove 01, so as to limit the structure 400 from leaving the limiting groove 01.

[0049] Under the action of external force, the driving part 220 can drive the elastic part 210 to move and elastically deform, so that the blocking part 230 switches from the first position to the second position; after the external force is removed, the elastic part 210 returns to its original state and drives the blocking part 230 to return from the second position to the first position. When the blocking part 230 is in the first position, the blocking part 230 blocks at least part of the opening 02 of the limiting groove 01 to prevent the structural member 400 from escaping from the limiting groove 01 through the above opening 02, thereby limiting the structural member 400. When the blocking part 230 is in the second position, the blocking part 230 is driven by the driving part 220 to move away from the limiting groove 01 to avoid the opening 02 of the limiting groove 01, so that the structural member 400 can escape from the limiting groove 01 through the opening 02.

[0050] It is understandable that in the limiting structure, the extension direction of the elastic portion 210 is related to the mounting surface 310 , and the elastic portion 210 and the mounting surface 310 form a first angle α that is away from the blocking portion 230 , and the first angle α is <90°.

[0051] Regarding the setting range and function of the first angle, reference may be made to the specific descriptions in various possible embodiments of the limiting structure of the first structure in the present application, which will not be repeated here.

[0052] Among them, it is worth mentioning that due to the limitations of process conditions or other factors, there may be some deviations or errors in the actual process, resulting in the "T-shaped structure" described above may not be completely accurate. For example, the "T-shaped structure" described above may be a T-shaped structure allowed within the allowable error range. Of course, the "T-shaped structure" can also be understood as a "standard T-shaped structure" or a "similar T-shaped structure". Therefore, as long as the "T-shaped structure" described above roughly meets the above conditions, it belongs to the protection scope of this application.

[0053] Based on the same technical concept, the embodiment of the present application provides a rack, Fig. 9 This is a schematic diagram of a structure in which an AP is fixed on a rack according to an embodiment of the present application. Fig.10 This is a schematic diagram of the structure of an AP fixedly mounted on a rack in another embodiment of the present application, referring to Fig. 9 and Fig.10 The rack 100 includes the position limiting structure in various possible embodiments of the present application. Because it includes the position limiting structure in the present application, the rack 100 also has the advantages of fewer structural parts of the position limiting structure, lower manufacturing cost and can effectively prevent the loss of the limited structural parts.

[0054] It is understandable that the present application does not limit the specific structure and application scenario of the rack 100. The rack 100 can be applied to the field of communication technology, and can also be applied to other fields.

[0055] Among them, the AP500 bracket 100 is taken as an example for explanation. The AP500 is usually installed on the wall of a building or the indoor ceiling through the bracket 100. The bracket 100 can be provided with at least two hanging holes 05 and at least two limiting grooves 01. First, when the bracket 100 is installed on the wall or the ceiling, bolts, screws or straps can be passed through the hanging holes 05 and fixed to the wall or the ceiling. Then, when the AP500 is installed on the bracket 100, the protrusion 410 on the AP500 can be slid into the limiting groove 01 through the guide groove 03 to achieve the installation of the AP500.

[0056] Optionally, the bracket 100 includes at least one limiting structure among various possible embodiments of the present application. Therefore, when an untrained operator wants to remove the AP500 from the bracket 100, he needs to first move the driving part 220, thereby driving the elastic part 210 to move and elastically deform, so that the blocking part 230 switches from the first station to the second station, so that the blocking part 230 avoids the opening 02 of the limiting groove 01, so that the protrusion 410 can escape from the limiting groove 01.

[0057] The above operation process can make it easier for trained operators to remove the AP500 from the rack 100; however, for untrained personnel, the above operation method is not easy to be discovered. First, because the AP500 is relatively large and will completely block the rack 100, it is usually difficult for untrained personnel to find the position of the limit structure. Moreover, even if the limit structure is found, because the limit structure has a novel structure, from the side of the rack 100 and AP500, only the driving part 220 extending through the avoidance opening 04 can be seen. Untrained personnel may not be able to associate its function and how to operate it. It is difficult to operate in the above specific way to make the limit structure unlock the protrusion 410, so as to remove the AP500 from the rack 100. Therefore, the installation position of the limit structure and the unlocking method in the present application are not easy to be discovered, which can prevent unrelated personnel from stealing the AP500.

[0058] Optionally, the limiting structure may be formed integrally with the bracket 100 , thereby realizing the anti-theft function design of the AP500 within a limited space at a very low cost.

[0059] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A limiting structure, characterized in that: include: A body, wherein the body is provided with a limiting groove, and the limiting groove has an opening for allowing the limited structural member to enter and exit; A limiter, the limiter comprising an elastic part, a driving part and a blocking part, the elastic part is fixed to the body, the blocking part is connected to the elastic part, the driving part is connected to the elastic part, the driving part is used to drive the elastic part to elastically deform and switch the blocking part from the first station to the second station, and the elastic part can drive the blocking part to return from the second station to the first station; Wherein, when the blocking portion is in the first position, the blocking portion blocks at least a portion of the opening, and when the blocking portion is in the second position, the blocking portion avoids the opening of the limiting groove.

2. The limiting structure according to claim 1, characterized in that: The body comprises a mounting surface, one end of the elastic portion facing away from the blocking portion is fixedly arranged on the mounting surface, a first angle is formed between the elastic portion and the mounting surface, the first angle is toward the driving portion, and the first angle α is less than 90°.

3. The limiting structure according to claim 1, characterized in that: The blocking portion includes a first blocking surface facing the opening, and the first blocking surface is used to prevent the structural member from being separated from the limiting groove.

4. The limiting structure according to claim 3, characterized in that: The blocking portion includes a second blocking surface, the second blocking surface is away from the driving portion, the second blocking surface is adjacent to the first blocking surface, and the angle between the first blocking surface and the second blocking surface is a right angle to prevent the structural member from detaching from the limiting groove when in the first working position.

5. The limiting structure according to claim 4, characterized in that: The end of the driving part away from the blocking part comprises a handle unit, and the end of the handle unit is provided with an arc chamfer.

6. The limiting structure according to claim 5, characterized in that: The driving portion extends in a direction away from the second blocking surface, and the handle unit includes a pressing surface, which is connected to the first blocking surface, and from one end connected to the first blocking surface, the pressing surface extends along the extension direction of the driving portion in a direction away from the opening.

7. The limiting structure according to any one of claims 1 to 6, characterized in that: The driving portion and the elastic portion form an L-shape, and the driving portion and the elastic portion form a second angle, the second angle is away from the limiting groove, and the second angle β is 70°≤β≤110°.

8. The limiting structure according to any one of claims 1 to 6, characterized in that: The limiting structure is an integrally formed structure.

9. The limiting structure according to any one of claims 1 to 6, characterized in that: The limiting structure further includes a guide groove communicated with the limiting groove, and the guide groove is used to guide the structural member to enter the limiting groove through the opening.

10. A rack, characterized in that: The hanger includes the limiting structure as described in any one of claims 1-9.

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