Locking structure of support legs and support legs

Abstract

This utility model discloses a locking structure for a support leg and a support leg, which includes a fixed base (10), an elastic element (30), and a limiting pressure plate (40). The fixed base (10) is connected to the main rod (20), and the fixed base (10) has an accommodating cavity (11) for placing the elastic element (30). The limiting pressure plate (40) cooperates with the second engaging part of the fixed base (10) through its first engaging part (42), and after cooperation, it squeezes the elastic element (30), thereby forming a movable structure of the limiting pressure plate (40). The limiting pressure plate (40) is also provided with a first protrusion (41) for fitting and locking with an external support leg (50). When the limiting pressure plate (40) moves relative to the fixed base (10) under pressure, the first protrusion (41) limits or releases the support leg (50), thereby realizing the storage and unfolding function of the support leg (50). This utility model provides a simpler and more durable locking structure.

Description

Technical Field

[0001] This utility model relates to the field of connecting accessories, and in particular to a locking structure and a support leg. Background Technology

[0002] The legs of a folding bracket are usually designed to be folded away when not in use to reduce volume and facilitate storage and transportation. When in use, they are unfolded to provide support. A locking structure is used to fix and unfold the legs of the folding bracket. In the prior art, the locking structure is usually installed on the folding support rod by bolts or buckles, and the user controls the folding legs to fold and unfold by controlling the locking structure.

[0003] However, this method is inconvenient to install and prone to loosening, with complex connections. After repeated use, it may affect the stability or sensitivity of the legs, resulting in a poor unfolding or folding effect. Users cannot respond in time when unfolding. From an economic point of view, this structure also increases costs. Utility Model Content

[0004] The main purpose of this utility model is to propose a locking structure for supporting legs, which aims to solve the problems of poor stability and lack of durability in the existing technology.

[0005] To achieve the above objectives, this utility model proposes a locking structure for a support frame, including a fixed base connected to the main rod, and the fixed base having a receiving cavity;

[0006] An elastic element is disposed within the accommodating cavity;

[0007] A limiting pressure plate is provided with a first protrusion, which is used to be adapted to lock with an external support leg.

[0008] The limiting pressure plate is further provided with a first engaging part, and the fixed seat is provided with a second engaging part. When the first engaging part and the second engaging part are engaged, the limiting pressure plate covers the accommodating cavity and squeezes the elastic element, forming a structure in which the limiting pressure plate moves relative to the fixed seat.

[0009] Optionally, the accommodating cavity is provided with a column, the elastic element is a spring, the spring is sleeved on the column, with one end sleeved on the column and the other end sleeved on the limiting pressure plate.

[0010] Optionally, the limiting pressure plate is provided with a connecting hole for connecting a button, and the column passes through the connecting hole on the limiting pressure plate to connect the button.

[0011] Optionally, the column is connected to the fixed base, and the limiting pressure plate is provided with a connecting column facing the column. One end of the connecting column is open for insertion of the column, and the other end is open to form the connecting hole for connection with the button. The column can extend from the opening at one end of the connecting column into the connecting hole to connect with the button.

[0012] Optionally, the edge of the limiting pressure plate is provided with a notch to form the first engaging part, and the second engaging part is provided on the inner wall of the fixed seat. The upper end surface of the second engaging part is an inclined surface. The first engaging part slides relative to the inclined surface until the lower end surfaces of the first engaging part and the second engaging part abut against each other.

[0013] Optionally, the fixing seat has a support portion and a connecting portion connected to the support portion, the diameter of the support portion being wider than the diameter of the connecting portion; the connecting portion is adapted to the diameter of the main rod and is used to extend into the main rod and connect with the main rod; the support portion is used to abut against the main rod when the connecting portion is connected to the main rod; and the sidewall of the support portion encloses to form the receiving cavity.

[0014] This utility model also provides a support frame, including a main rod and a support leg, one end of which is rotatably connected to the main rod, and also includes the aforementioned locking structure of the support frame, wherein the fixing seat is used to connect to the main rod, and the first protrusion is used to be adapted to lock the support leg.

[0015] Optionally, the support frame further includes a support rod, the fixed base is provided with a connecting rod, one end of the support rod is rotatably connected to the connecting rod, and the other end is rotatably connected to the support leg.

[0016] Optionally, the support leg is provided with a second protrusion, which abuts against and locks against the first protrusion.

[0017] Optionally, the support frame also includes a button, and the limiting pressure plate is connected to the button. Pressing the button causes the first protrusion on the limiting pressure plate to move, thereby separating the first protrusion from the support leg.

[0018] This utility model also provides a support rod, which includes a clamping device and the aforementioned support legs, wherein the clamping device is connected to the support legs.

[0019] This utility model uses a cavity inside the fixed base to house an elastic element, which allows for pressing and resetting. A limiting pressure plate is connected to the elastic element, forming a movable structure for the limiting pressure plate.

[0020] The limiting pressure plate engages with the second engaging part of the fixed seat in the accommodating cavity through its first engaging part and squeezes the elastic element, causing the elastic element to be compressed. When the limiting pressure plate moves relative to the fixed seat under the pressure of the user, the first protrusion releases the restriction on the external support foot, thereby realizing the function of unfolding the external support foot. Due to the elastic force of the elastic element, the elastic element causes the limiting pressure plate to reset and return to the previous compressed state. When it is necessary to retract the external support foot, the external support foot presses the first protrusion and moves a certain distance, then forms an abutment with the second protrusion. The elastic element causes the limiting pressure plate to reset, and the first protrusion resets and locks the second protrusion, thereby limiting the external support foot and completing the retraction of the external support foot.

[0021] This method is user-friendly, and the structure is stable, avoiding the wear and cost of bolts used in traditional structures. The support legs and support rods using this structure provide users with a simple way to fold, store, and unfold the device. It also has good stability and connectivity, making the assembly and production process easier, reducing the number of parts, and lowering production costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 An exploded view of the locking structure 100 of the support leg of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the fixed seat 10 and the limiting pressure plate 40 in the locking structure 100 of the support frame of this utility model;

[0025] Figure 3 This is a schematic diagram of the locking structure 100 of the support leg of this utility model from a certain perspective.

[0026] Figure 4 This is a cross-sectional view of the support leg 200 of this utility model;

[0027] Figure 5 This is a partial exploded view of the support leg 200 of this utility model;

[0028] Figure 6 for Figure 5 Enlarged structural diagram at point A;

[0029] Figure 7This is a structural diagram of the support leg 200 of this utility model applied in the storage state of the support rod 300;

[0030] Figure 8 This is a schematic diagram of the structure of the support leg 200 of this utility model applied to the support rod 300 in the unfolded state.

[0031] Explanation of icon numbers:

[0032]

[0033] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0034] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] In applications such as folding brackets, pan-tilt units, and electronic device storage and support, locking structures are typically used to control the fixing and unfolding of products. Their reliability and convenience directly affect the product's performance. Existing locking structures primarily employ mechanical locking methods, such as bolt-nut connections or snap-fit ​​connections. These locking structures are then mechanically connected to the folding bracket using bolts or integrated designs to control the folding bracket. Therefore, how the locking structure is used in conjunction with the folding bracket will affect the folding bracket's usability.

[0038] However, existing locking structures have many drawbacks. For example, the bolt-nut connection requires tools for adjustment during installation, which is cumbersome. After long-term use, the threads are prone to wear, leading to decreased connectivity and loosening during use. This can also cause a decrease in the sensitivity or stability of the folding bracket.

[0039] To address the problems existing in the prior art, this application proposes a locking structure 100 for supporting legs, with reference to... Figure 1 The locking structure 100 provides pressing and resetting via the elastic element 30. The limiting pressure plate 40 cooperates with the second locking part 12 of the fixed seat 10 within the accommodating cavity 11 through its first engaging part 42, compressing the elastic element 30 to form a movable structure for the limiting pressure plate 40. Under pressure, the limiting pressure plate 40 moves relative to the fixed seat 10, causing the limiting pressure plate 40 to carry the first protrusion 41 to move, releasing the restriction on the support leg 50 or re-engaging with the support leg 50, thereby realizing the locking and releasing of the external support leg 50. The folding and unfolding of the external support leg 50 is simple and easy to operate. Furthermore, the connection method of the first engaging part 42, the elastic element 30, and the second engaging part 12 improves the connectivity and stability of the locking structure 100, allowing for multiple uses and avoiding the wear and cost caused by bolts in traditional structures.

[0040] The locking structure 100 of this support leg has the following embodiments:

[0041] The main rod 20 can be a support frame, gimbal, or similar structure. The fixed base 10 is connected to the end of the main rod 20. The main rod 20 abuts against the support part 14 of the fixed base 10. The connecting part 15 of the fixed base 10 is adapted to the diameter of the main rod 20 and extends into the main rod 20 for connection. The diameter of the support part 14 is wider than the diameter of the connecting part 15. It is used to abut against the main rod 20 when the connecting part 15 is connected to the main rod 20, thereby limiting and fixing the main rod 20. The side wall of the support part 14 encloses and forms a receiving cavity 11. The elastic element 30 is a spring and is installed in the receiving cavity 11 through a column 13 sleeved on the fixed base 10. The limiting pressure plate 40 is connected to the spring, so that the limiting pressure plate 40 can be pressed and reset.

[0042] For details, please refer to Figure 2A spring is sleeved on the column 13, with one end abutting against the fixed seat 100 and the other end abutting against the limiting pressure plate 40. The column 13 is connected to the fixed seat 10. The limiting pressure plate 40 has a connecting column 43 facing the column 13. The connecting column 43 is arranged around the column 13. In the accommodating cavity 11, the connecting column 43 can be stored in the storage groove 17 on the outer periphery of the column 13 to save space in the accommodating cavity 11 and make the equipment smaller. The end of the connecting column 43 facing the limiting pressure plate 40 is open and sleeved on the column 13, so that the limiting pressure plate 40 moves along the axis of the column 13. When the limiting pressure plate 40 is pressed, the connecting column 43 moves relative to the column 13, so that the spring can be compressed in the vertical direction to avoid displacement.

[0043] The first engaging part 42 is limited within the elastic limit of the elastic member 30 by the second engaging part 12, forming a compression of the elastic member 30 by the limiting pressure plate 40. Since the elastic member 30 is in a compressed state, the user can be more stable when pressing and during the spring rebound process, reducing the possibility of displacement or failure to reset due to insufficient elasticity.

[0044] The limiting pressure plate 40 has a notch 44 on its edge to form a first engaging part 42. The second engaging part 12 is located on the inner wall of the fixed base 10 to cooperate with the first engaging part 42. When in the locked state, the second engaging part 12 is located at the notch 44 and abuts against the first engaging part 42 to limit the first engaging part 42. The second protrusion 51 on the outer support 50 is engaged with the first protrusion 41. The first protrusion 41 prevents the second protrusion 51 from moving, that is, the second engaging part 12 prevents the first engaging part 42 from separating from the fixed base 10. When the limiting pressure plate 40 is subjected to external force, it can move towards the fixed base 10. This direction is the direction in which the limiting pressure plate 40 squeezes the elastic member 30. When the external force disappears, under the action of the elastic restoring force of the elastic member 30, the limiting pressure plate 40 returns to the position where the first engaging part 42 and the second engaging part 12 abut against each other, thus completing the locking.

[0045] When the locking structure 100 of the support leg needs to be unlocked, the limiting plate 40 is pressed to move the first engaging part 42 a certain distance away from the second engaging part 12, so that the first protrusion 41 moves to release the second protrusion 51, and the outer leg 50 unfolds to form support.

[0046] When the external support leg 50 needs to be retracted after use, the external support leg 50 is returned along the original path. Since the limiting pressure plate 40 is elastic, the support leg 50 presses and moves the first protrusion 41 back to the inside of the first protrusion 41, forming the first protrusion 41 and the second protrusion 51 abutting again. The first protrusion 41 rebounds and limits the second protrusion 51, thus realizing the retraction of the external support leg 50. The first protrusion 41 has a slope to facilitate the movement of the external support leg 50 along the slope.

[0047] In the above process, to facilitate pressing, the limiting pressure plate 40 is connected to the button 60, and the button 60 is connected in the following way:

[0048] refer to Figure 3 The connecting post 43 on the limiting pressure plate 40 has an opening at one end for the insertion of the column 13, and an opening at the other end forming a connecting hole 45 for connection with the button 60. The connecting post 43 faces the receiving cavity 11. The column 13 can extend from the opening at one end of the connecting post 43 into the connecting hole 45 to connect with the button 60. During connection, the button 60 is positioned at the connecting hole 45, the column 13 is inserted into the connecting post 43 and extends out of the connecting hole 45 to connect with the button 60. At this time, the connecting post 43 is sleeved on the column 13 to achieve the connection between the limiting pressure plate 40 and the column. This allows the limiting pressure plate 40, the fixing seat 10, and the column 13 to be connected as one unit. The button 60 has a circular pressing part 61 and a pressing rod 62 connected to the pressing part 61. The pressing rod 62 is connected to the column 13 and is located in the mounting groove 47. The pressing rod 62 and the mounting groove 47 are structurally compatible and both form a stable triangle. The button 60 has three connecting feet 63 that are inserted into three mounting holes in the mounting groove 47. This method allows the button 60 to be connected to both the limiting pressure plate 40 and the fixing seat 10 simultaneously, and makes the connection stable.

[0049] The locking structure 100 of the support leg provided in this embodiment, through the cooperation of the easily installed first engaging part 42, the second engaging part 12 and the spring, allows the limiting pressure plate 40 to move elastically and stably relative to the fixed base 10. The limiting pressure plate 40 is provided with a first protrusion 41, which can lock the external support leg 50 in a simple way. The user can press the button 60 through the locking structure 100 to control the unfolding and retraction of the external support leg 50, which can be applied in different scenarios.

[0050] Based on the foregoing embodiments, this utility model also provides a support leg 200, see reference. Figure 4 and Figure 5 It includes a main rod 20, a support leg 50, a button 60, and a locking structure 100. The main rod 20 and the support leg 50 are both connected to the locking structure 100. The support bracket 200 can realize all the above embodiments.

[0051] Specifically, the support leg 200 also includes the following embodiments:

[0052] The support leg 50 is used for ground support. The support leg 50 is rotatably connected to the main rod 20. The rotatable connection between the support leg 50 and the main rod 20 is not limited to a direct connection between the two. In this embodiment, the main rod 20 is provided with a sleeve 21. One end of the support leg 50 is rotatably connected to the sleeve 21 on the main rod 20. The sleeve 21 can move up and down along the main rod 20. The second protrusion 51 on the other end of the support leg 50 cooperates with the first protrusion 41 to lock or unfold relative to each other.

[0053] One end of the support rod 70 is rotatably connected to the middle of the support leg 50, and the other end is hook-shaped and connected to the connecting rod 16 on the fixed base 10. The first protrusion 41 is provided on the side of the limiting pressure plate 40 facing the button 60, and the second protrusion 51 is provided on the support leg 50 and facing the first protrusion 41. The support leg 50 has a side wall 52 and a bottom wall 53. The bottom wall 53 is connected to the side wall 52 and is perpendicular to the side wall 52. The second protrusion 51 is provided on the bottom wall 53 and is a certain distance from the side wall 52. There are three of each of the first protrusion 41 and the second protrusion 51. The three first protrusions 41 are evenly distributed on the surface of the limiting pressure plate 40 and arranged around the connecting hole 45, so that there is space between the limiting pressure plate 40 and the bottom wall 53. The first protrusion 41 and the second protrusion 51 can be locked together.

[0054] Preferably, further reference Figure 6 The first protrusion 41 and the second protrusion 51 are both set as trapezoids with inclined surfaces, and the inclined surfaces of the first protrusion 41 and the second protrusion 51 are set opposite to each other, so that the support leg 50 can move more easily and retract to the limiting pressure plate 40.

[0055] When the support leg 200 is in the retracted state, the support leg 50 and the support rod 70 are closed relative to the main rod 20, the second protrusion 51 abuts against the inner side of the first protrusion 41, the second engaging part 12 is located at the notch 44 and abuts against the first engaging part 42, and the spring is in a compressed state.

[0056] When the support bracket 200 needs to be unfolded into a supporting state, pressing the button 60 causes the limiting plate 40 to move elastically. The first protrusion 41 moves away from the second protrusion 51 until the second protrusion 51 is no longer restricted by the first protrusion 41. The support leg 50 unfolds and drives the support rod 70 to rotate and unfold away from the main rod 20. The pressure on the main rod 20 is applied to the sleeve 21. The pressure on the sleeve 21 is supported by the three support legs 50. The three support legs 50 unfold to form a supporting state and support the sleeve 21, so that the sleeve 21 forms a supporting force to support the main rod 20 for the electronic equipment. The three support rods 70 support the three support legs 50, improving the stability of the support.

[0057] When the support leg 200 returns from the supported state to the retracted state, the user folds the support leg 50 and support rod 70 by rotating them, and moves the second protrusion 51 along the inclined surface of the first protrusion 41. At the same time, the support leg 50 compresses the limiting pressure plate 40, so that the spring has a restoring force. When the second protrusion 51 moves to release the pressure on the first protrusion 41, the first protrusion 41 is restored by the spring force and the second protrusion 51 is limited within the first protrusion 41, thereby realizing the storage of the support leg 50 and support rod 70.

[0058] Preferably, the limiting pressure plate 40 is provided with a limiting part 46 at the position corresponding to the connecting rod 16. The limiting part 46 limits the maximum range of rotation of the support rod 70 to prevent the support rod 70 from detaching from the connecting rod 16 when rotating.

[0059] Preferably, the inner wall of the support rod 70 is provided with a rotatable elastic push plate 71. The push plate 71 is between the support rod 70 and the support leg 50. When the first protrusion 41 releases the restriction on the second protrusion 51, in order to make the support rod 70 and the support leg 50 separate and unfold more quickly, the push plate 71 provides elastic force to the support leg 50 to separate it from the support rod 70.

[0060] This invention can also be applied to a support rod 300, which includes a clamping device 80 and a support leg 200. The support leg 200 can implement all the aforementioned embodiments. (See reference...) Figure 7 and Figure 8 By using the locking structure 100, the support rod 300 can switch between the supporting state and the storage state.

[0061] The clamping device 80 includes a clamping part 81 and a rotating shaft 82. The clamping part 81 is used to clamp electronic devices, such as mobile phones and cameras. The clamping part 81 is horizontally rotatable at the end of the rotating shaft 82. The rotating shaft 81 is vertically rotatable and connected to the main rod 20 of the support leg 200 to achieve 360° rotation.

[0062] The legs 50 and support rods 70 of the support bracket 200 can provide support and storage. When in use, the user presses the button 60 to release the legs 50 and support rods 70. The sleeve 21 moves along the main rod 20 until the legs 50 and support rods 70 are fully extended, so that the support bracket 200 is in a supporting state, which can support electronic products on the clamping device 80 for user convenience.

[0063] When retracted, the support leg 50 is locked into the first protrusion 41 of the limiting pressure plate 40, and the support rod 70 will automatically fold at the same time. The support rod 300, which uses the locking structure 100, can provide better support and stability for the clamped electronic equipment.

[0064] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A locking structure (100) of a support leg, characterized by, include: A fixed seat (10) is connected to the main rod (20), and the fixed seat (10) is provided with a receiving cavity (11). An elastic element (30) is disposed within the receiving cavity (11); A limiting pressure plate (40) is provided with a first protrusion (41), which is used to be adapted to lock with an external support leg (50); The limiting pressure plate (40) is also provided with a first engaging part (42), and the fixed seat (10) is provided with a second engaging part (12). When the first engaging part (42) and the second engaging part (12) cooperate, the limiting pressure plate (40) covers the accommodating cavity (11) and squeezes the elastic member (30), forming a structure in which the limiting pressure plate (40) moves relative to the fixed seat (10).

2. The support leg locking structure (100) according to claim 1, characterized in that, The cavity (11) is provided with a column (13), the elastic element (30) is a spring, the spring is sleeved on the column (13), one end abuts against the fixed seat (10), and the other end abuts against the limiting pressure plate (40).

3. The support leg locking structure (100) according to claim 2, characterized in that, The limiting pressure plate (40) is provided with a connecting hole (45), which is used to connect with the button (60), and the column (13) passes through the connecting hole (45) on the limiting pressure plate (40) to connect with the button (60).

4. The support leg locking structure (100) according to claim 3, characterized in that, The column (13) is connected to the fixed base (10). The limiting pressure plate (40) has a connecting column (43) on one side facing the column (13). One end of the connecting column (43) is open for the column (13) to be inserted, and the other end is open to form the connecting hole (45) for connecting with the button (60). The column (13) extends from the opening at one end of the connecting column (43) into the connecting hole (45) and connects with the button (60).

5. The support leg locking structure (100) according to claim 1, characterized by, The first engaging part (42) is disposed on the edge of the limiting pressure plate (40), and the second engaging part (12) is disposed on the inner wall of the fixing seat (10), and the upper end surface of the second engaging part (12) is an inclined surface (121); the first engaging part (42) slides relative to the inclined surface (121) until the lower end surface of the first engaging part (42) and the second engaging part (12) abut against each other.

6. The support leg locking structure (100) according to claim 5, wherein The fixed base (10) has a support portion (14) and a connecting portion (15) connected to the support portion (14), the support portion (14) being wider than the connecting portion (15); the connecting portion (15) is adapted to the diameter of the main rod (20) and is used to extend into the main rod (20) and connect with the main rod (20); the support portion (14) is used to abut against the main rod (20) when the connecting portion (15) is connected to the main rod (20); and the side wall of the support portion (14) encloses to form the receiving cavity.

7. A support frame (200) comprising a main rod (20) and legs (50), one end of the legs (50) being rotatably connected to the main rod (20), characterized in that, It also includes a locking structure (100) for the support leg as described in any one of claims 1 to 6, wherein the fixing seat (10) is used to connect with the main rod (20), and the first protrusion (41) is used to be adapted to lock the support leg (50).

8. The support stand (200) according to claim 7, characterized in that The support leg (200) also includes a support rod (70), and the fixed base (10) is provided with a connecting rod (16). One end of the support rod (70) is rotatably hooked to the connecting rod (16), and the other end is rotatably connected to the support leg (50).

9. The support stand (200) according to claim 8, characterized in that The support leg (50) is provided with a second protrusion (51), which abuts against the first protrusion (41).

10. The support stand (200) of claim 7, wherein, It also includes a button (60), the limiting pressure plate (40) is connected to the button (60), pressing the button (60) causes the first protrusion (41) on the limiting pressure plate (40) to move, so that the first protrusion (41) separates from the support leg (50).

Images