A self-locking mechanism

Abstract

The present invention relates to a self-locking mechanism, which belongs to the technical field of spoke installation, and solves the problem that the existing self-locking mechanism cannot withstand a large lateral rotation force perpendicular to the axial direction. The present invention provides a self-locking mechanism, including a shell, a limit ring and a self-locking component, wherein the shell, the limit ring and the self-locking component are all detachably connected; the shell and the limit ring cooperate to limit the rotation position and distance of the spoke assembly; the self-locking component moves along the axial direction to control the release and retraction of the spoke assembly, thereby realizing the expansion and storage locking of the spoke assembly. The self-locking mechanism designed by the present invention has a compact, light and easy-to-carry structure.

Description

Technical Field

[0001] The invention relates to the technical field of spoke installation, and in particular to a self-locking mechanism. Background Art

[0002] Currently, the most common self-locking mechanism is the automatic telescopic locking mechanism. This type of self-locking mechanism can be locked in the axial direction and can withstand large axial forces, and can achieve self-locking of the structure in the vertical direction, but cannot withstand large forces perpendicular to the axial direction and lateral rotational forces. As for products with spokes, such products are restricted by space and transportation environment, and the spokes need to be expanded and locked, or retracted and locked. Therefore, the self-locking mechanism is required to withstand large forces and rotate in the lateral direction perpendicular to the axial direction. However, there is still no such self-locking mechanism to achieve this function. Summary of the invention

[0003] In view of the above analysis, an embodiment of the present invention aims to provide a self-locking mechanism to solve the problem that the existing self-locking mechanism cannot withstand a large lateral rotation force perpendicular to the axial direction.

[0004] The present invention provides a self-locking mechanism, comprising a housing, a limiting ring and a self-locking component, wherein the housing, the limiting ring and the self-locking component are all detachably connected;

[0005] The housing cooperates with the limiting ring to limit the rotation position and distance of the spoke assembly;

[0006] The self-locking assembly moves axially to control the release and retraction of the spoke assembly, thereby realizing the expansion and storage locking of the spoke assembly.

[0007] Optionally, the shell further includes a matching portion, and the matching portion is provided with a first limiting tooth.

[0008] Optionally, the limiting ring includes second limiting teeth, and the second limiting teeth cooperate with the first limiting teeth to unfold and fix the spoke assembly.

[0009] Optionally, the matching portion further includes a first limiting platform.

[0010] Optionally, the limiting ring further includes a second limiting platform, and when the first limiting platform is close to the second limiting platform, the spoke assembly can be gathered and fixed.

[0011] Optionally, the shell includes a connecting piece, the connecting piece is provided with a sleeve, a second mounting hole and a third mounting hole are coaxially provided at the center of the sleeve, and the aperture of the second mounting hole is larger than the aperture of the third mounting hole.

[0012] Optionally, a third limiting platform is formed at the connection between the second mounting hole and the third mounting hole.

[0013] Optionally, the self-locking component includes a button and an elastic member, one end of the elastic member abuts against the button, and the other end of the elastic member abuts against the third limit platform.

[0014] Optionally, the self-locking assembly further comprises a chassis, and the chassis is installed in the housing.

[0015] Optionally, the chassis comprises locking teeth.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. In the self-locking mechanism designed by the present invention, the limit ring and the self-locking assembly are both installed inside the housing, and the spoke assembly also moves inside the housing. This structure is compact, light and easy to carry.

[0018] 2. The housing, the limiting ring and the self-locking assembly of the present invention cooperate to lock the spoke assembly, and the self-locking mechanism has a stronger structural strength.

[0019] 3. The present invention provides a limiting ring, and only the first spoke needs to be rotated, and the first spoke can drive other spokes to rotate and unfold. The self-locking mechanism has a simple structure, a simple motion relationship and is easy to operate.

[0020] 4. The limiting ring and the matching part of the present invention form a fourth limiting platform, which limits the depth of the chassis entering the shell to prevent the chassis from touching the matching part and causing damage to the shell, making the self-locking mechanism more stable.

[0021] 5. The fifth mounting hole of the shell provided in the present invention is provided with a limiting hole, and the limiting strip is fixedly matched with the limiting hole. This structure is used to limit the horizontal rotation of the chassis, thereby enhancing the stability and strength of the self-locking mechanism.

[0022] 6. The present invention realizes the unfolding and folding locking of the spoke assembly by adopting the unfolding and folding characteristics of the fan structure, and is suitable for products that need to be unfolded and folded and locked and are restricted by space and transportation environment.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 An exploded view of the self-locking mechanism of Embodiment 1 of the present invention;

[0026] Figure 2 This is a schematic structural diagram of a housing of a self-locking mechanism according to Embodiment 1 of the present invention;

[0027] Figure 3 This is a schematic structural diagram of a limit ring of a self-locking mechanism according to Embodiment 1 of the present invention;

[0028] Figure 4 It is a structural schematic diagram of a self-locking component of a self-locking mechanism according to Embodiment 1 of the present invention;

[0029] Figure 5 Schematic top view of a housing of another self-locking mechanism according to Embodiment 1 of the present invention;

[0030] Figure 6 for Figure 5 A schematic diagram of the internal structure of a shell;

[0031] Figure 7 This is a schematic structural diagram of another connecting column according to Example 1 of the present invention;

[0032] Figure 8 This is a schematic diagram of the assembly structure of the housing, the limiting ring and the spoke assembly of Example 1 of the present invention;

[0033] Fig. 9 This is a schematic diagram of the folded state of the self-locking mechanism of Example 1 of the present invention;

[0034] Fig.10 This is a schematic diagram of the self-locking mechanism of Example 1 of the present invention in an unfolded rotation state;

[0035] Fig.11 This is a schematic diagram of the self-locking mechanism in the first embodiment of the present invention in the unfolded locked state;

[0036] Fig.12 Schematic diagram of the structure of a foldable outdoor tent support according to Embodiment 2 of the present invention;

[0037] Fig.13 It is a front view of a foldable outdoor tent stand according to Embodiment 2 of the present invention;

[0038] Fig.14 Schematic diagram of the folding process of the foldable outdoor tent stand according to Embodiment 2 of the present invention;

[0039] Fig.15 This is a schematic diagram of a foldable outdoor tent support after being closed according to Embodiment 2 of the present invention;

[0040] Fig.16 A schematic diagram of the connection between the main rod and the housing of the self-locking mechanism;

[0041] Fig.17 This is a schematic diagram of the connection between the main rod and the connecting rod of Example 2 of the present invention.

[0042] Reference numerals:

[0043] 1-housing; 11-installation part; 111-installation opening; 112-limiting groove; 12-matching part; 121-first limiting tooth; 122-first limiting platform; 123-first opening; 13-opening; 14-connecting piece; 141-connecting plate; 142-sleeve; 2-limiting ring; 21-second limiting tooth; 22-second limiting platform; 23-second opening; 3-self-locking assembly; 31-button; 32-elastic piece; 33-chassis; 331-connecting column; 332-locking tooth column; 4-spoke assembly; 5-main rod; 51-first end; 511-first connecting part; 512-first limiting part; 52-second end; 53-connecting part; 531-spoke groove; 6-3-connecting rod, 7-4-connecting rod shaft disc; 8 main rod shaft. DETAILED DESCRIPTION

[0044] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0045] The terms “from left to right”, “interior”, “inner side”, etc. in the embodiments of the present invention are all referred to as Figure 1 The orientation shown in is the reference.

[0046] Example 1

[0047] A specific embodiment of the present invention, as Figure 1-4 As shown, the present invention discloses a self-locking mechanism, including a shell 1, a limiting ring 2 and a self-locking assembly 3. The shell 1, the limiting ring 2 and the self-locking assembly 3 are all detachably connected. The shell 1 and the limiting ring 2 cooperate to limit the rotation position and distance of the spoke assembly 4. The self-locking assembly 3 moves axially to control the release and retraction of the spoke assembly 4, thereby realizing the expansion and storage locking of the spoke assembly 4.

[0048] In the self-locking mechanism designed by the present invention, the limit ring 2 and the self-locking assembly 3 are both installed inside the housing 1, and the spoke assembly 4 also moves inside the housing 1. This structure is compact, light and easy to carry; the housing 1, the limit ring 2 and the self-locking assembly 3 cooperate to lock the spoke assembly 4. This self-locking mechanism has stronger structural strength, fewer structural parts, simple movement relationship and easy operation. The present invention realizes the expansion and storage locking of the spoke assembly 4 by adopting the expansion and folding characteristics of the fan structure, which is suitable for products that need to be expanded and folded and locked and are restricted by space and transportation environment.

[0049] like Figure 1and Figure 2 As shown, the shell 1 includes a mounting portion 11, a matching portion 12 and an opening portion 13. The mounting portion 11 and the opening portion 13 are arranged in parallel at both ends of the matching portion 12. The matching portion 12 is vertically connected to the outermost periphery of the mounting portion 11. The mounting portion 11 and the matching portion 12 can be integrally formed or detachably connected.

[0050] Specifically, Figure 2 As shown, a mounting opening 111 is provided at the center of the mounting portion 11 , and the mounting opening 111 is provided with an internal thread.

[0051] For example Figure 2 As shown, the inner side surface of the mounting portion 111 is also provided with a limiting groove 112, and the limiting groove 112 is used to install the limiting ring 2, and the limiting ring 2 rotates in the limiting groove 112, so that the width of the limiting groove 112 is adapted to the thickness of the limiting ring 2. Preferably, the width of the limiting groove 112 is greater than the thickness of the limiting ring 2 to facilitate the limiting ring 2 to rotate in the limiting groove 112.

[0052] The matching portion 12 is provided with a first limiting tooth 121, which is stepped and has multiple tooth steps. The number and height of the tooth steps are determined according to actual conditions. Figure 1 In this embodiment, the first limiting tooth 121 is provided with four tooth steps, which are the first, second, third and fourth tooth steps from left to right.

[0053] The matching portion 12 is further provided with a first limiting platform 122 , and the first limiting platform 122 is a platform.

[0054] The matching portion 12 is further provided with a first opening 123 . The first opening 123 is disposed between the first limiting platform 122 and the fourth tooth step, and the first opening 123 is communicated with the opening portion 13 .

[0055] It should be noted that the limit ring 2 and the self-locking assembly 3 are installed in the housing 1 through the opening 13 , and the self-locking assembly 3 performs axial extension and retraction movements in the opening 13 .

[0056] The housing 1 further comprises a connecting member 14 , and the connecting member 14 is detachably connected to the mounting portion 11 and the self-locking assembly 3 .

[0057] The connecting member 14 includes a connecting plate 141 and a sleeve 142 . The connecting plate 141 is vertically connected to the sleeve 142 , and the center lines of the connecting plate 141 and the sleeve 142 are the same straight line.

[0058] The connecting plate 141 is provided with external threads, and the external threads of the connecting plate 141 are matched and fixedly connected with the internal threads of the installation opening 111 .

[0059] Furthermore, a first mounting hole is provided at the center of the connecting plate 141 .

[0060] A second mounting hole and a third mounting hole are coaxially disposed at the center of the sleeve 142 , wherein the aperture of the second mounting hole is larger than the aperture of the third mounting hole, and the aperture of the second mounting hole is equal to the aperture of the first mounting hole.

[0061] Specifically, the first, second and third mounting holes can be of any shape. Preferably, the first, second and third mounting holes are cylindrical; the third limiting platform is formed at the connection between the second mounting hole and the third mounting hole.

[0062] It should be noted that the spoke assembly 4 is provided with a mounting end, and the mounting end of the spoke assembly 4 is sleeved on the sleeve 142 , and the spoke assembly 4 can rotate on the sleeve 142 .

[0063] Furthermore, if Figure 5 and Figure 6 As shown, the present invention provides another housing 1, the mounting portion 11 of the housing 1 and the connecting member 14 are integrally formed, and a limiting groove is provided on the third mounting hole for limiting the horizontal circular rotation of the self-locking component 3 to ensure the stability of the self-locking mechanism.

[0064] like Figure 3 As shown, the limiting ring 2 includes a second limiting tooth 21, which is stepped and has multiple tooth steps. The number and height of the tooth steps are set according to actual needs; in this embodiment, see Figure 1 The second limiting tooth 21 cooperates with the first limiting tooth 121. Specifically, the second limiting platform 21 is provided with four levels of tooth steps, which are the fifth, sixth, seventh and eighth tooth steps from left to right, respectively. The first tooth step is engaged with the fifth tooth step, the second tooth step is engaged with the sixth tooth step, the third tooth step is engaged with the seventh tooth step, and the fourth tooth step is engaged with the eighth tooth step, respectively, and the spoke assembly 4 can be unfolded at the same time. The limiting ring 2 also includes a second limiting platform 22. When the second limiting platform 22 is close to the first limiting platform 122, the spoke assembly 4 can be retracted.

[0065] The limiting ring 2 is provided with a second opening 23 at the fifth tooth step, and the second opening 23 is used to clamp the spoke assembly 4, so that the limiting ring 2 rotates as the spoke assembly 4 unfolds and rotates.

[0066] In this embodiment, Figure 1As shown, the locking assembly 4 is provided with four spokes, namely the first, second, third and fourth spokes from left to right. During the rotation process of the spoke assembly 4 from the retracted state to the unfolded state, the first spoke is stuck at the second opening 23 of the fifth tooth step, and the limiting ring 2 is driven to rotate while the first spoke is rotated, and then the sixth tooth step drives the second spoke, the seventh tooth step drives the third spoke, and the eighth tooth step drives the fourth spoke, until the first tooth step and the fifth tooth step cooperate to fix the first spoke, the second and sixth tooth steps cooperate to fix the second spoke, the third and seventh tooth steps cooperate to fix the third spoke, and the fourth and eighth tooth steps cooperate to fix the fourth spoke, thereby completing the unfolding rotation of the spoke assembly 4. This structure enhances the horizontal bearing capacity of the spoke assembly 4. In this process, only the first spoke needs to be rotated through the limiting ring 2, and the first spoke can drive other spokes to rotate and unfold. This self-locking mechanism has a simple structure, a simple motion relationship and is easy to operate.

[0067] like Figure 4 As shown, the self-locking component 3 includes a button 31 , which is provided with an internal thread and is installed at the first installation hole of the connecting member 14 .

[0068] The self-locking assembly 3 further includes an elastic member 32 , one end of which abuts against the button 31 , and the other end of which abuts against the third limit platform in the sleeve 142 . At this time, the elastic member 32 is in a natural state.

[0069] Optionally, the elastic member 32 may be a spring or a disc spring.

[0070] The self-locking assembly 3 further includes a chassis 33 , which is installed in the housing 1 through the opening 13 .

[0071] It should be noted that the width of the limit ring 2 is smaller than the width of the matching part 12. When the limit ring 2 is installed in the shell 1, the limit ring 2 and the matching part 12 form a fourth limit platform. The chassis 33 cooperates with the fourth limit platform and makes axial movement between the fourth limit platform and the matching part 12. This structure limits the depth of the chassis 33 entering the shell 1 to prevent the chassis 33 from touching the matching part 12 and causing damage to the shell 1, making this self-locking mechanism more stable.

[0072] The chassis 33 includes a connecting column 331 , and the connecting column 331 includes a first section and a second section, wherein the first section is cylindrical, and an end of the first section is provided with an external thread; and the second section is non-cylindrical.

[0073] In this embodiment, the connecting column 331 passes through the third, second, and first mounting holes of the connecting member 14, the first section of the connecting column 331 is fixedly connected to the button 31, and the second section of the connecting column 331 cooperates with the third mounting hole. Because the second section is non-cylindrical and the third mounting hole is cylindrical, the second section can only move axially in the third mounting hole but cannot rotate horizontally. This structure ensures the stability of the self-locking mechanism.

[0074] Furthermore, if Figure 7 As shown, the present invention provides another connecting column 331, the second section of the connecting column 331 is provided with a limiting strip, and correspondingly, the third mounting hole of the shell 1 is provided with a limiting groove, and the limiting strip is fixed with the limiting groove. This structure is used to limit the horizontal rotation of the chassis 33, thereby enhancing the stability and strength of the self-locking mechanism.

[0075] A matching groove is also provided at the center of the chassis 33 , and the bottom end of the sleeve 142 of the connecting member 14 abuts against the matching groove.

[0076] The chassis 33 also includes a locking tooth column 332. When the spoke assembly 4 is unfolded, the locking tooth column 332 fixes the spoke assembly 4, limits the horizontal rotation of the spoke assembly 4, and enhances the horizontal bearing capacity of the spoke assembly 4; when the spoke assembly 4 is folded, the locking tooth column 332 limits the horizontal rotation of the spoke assembly 4.

[0077] Specifically, the locking tooth column 332 is in a step shape, and the number of the locking tooth column 332 is not limited and is determined according to the number of the spoke assemblies 4 .

[0078] In this embodiment, Figure 1 As shown, the number of the locking gear posts 332 is set to four, which are the first, second, third and fourth gear posts from left to right, respectively. The heights of the first, second, third and fourth gear posts are successively reduced by equal distances, and there are gaps between the first and second, the second and third, and the third and fourth gear posts, so that the spoke assembly 4 can be stuck in the gap.

[0079] It should be noted that when the spoke assembly 4 is retracted by the first limit platform 122 of the shell 1 and the second limit platform 22 of the limit ring 2, the fourth tooth column of the chassis 33 limits the rotation of the spoke assembly 4; when the spoke assembly 4 is unfolded and fixed by the first limit tooth 121 of the shell 1 and the second limit tooth 21 of the limit ring 2, the locking tooth column 332 of the chassis 33 locks the spoke assembly 4, so that the spoke assembly 4 can withstand greater force in the horizontal direction.

[0080] The use of the self-locking mechanism of the present invention is as follows:

[0081] (1) The installation process of the self-locking mechanism is as follows:

[0082] Step 1: Install the spoke assembly 4; first, fix the connecting member 14 to the mounting portion 11, and the spoke assembly 4 is arranged at the first limiting platform 122 through the first opening 123. At this time, the spoke assembly 4 is in a retracted state.

[0083] Step 2: Install the limit ring 2 and the self-locking assembly; align the second opening 23 of the limit ring 2 with the first opening 123, and install the limit ring in the limit groove 112. At this time, the limit ring 2 locks the spoke assembly 4 between the first limit platform 122 and the second limit platform 22.

[0084] Then, the chassis 33 is installed on the fourth limit platform through the opening portion 13, and the connecting column 331 passes through the third, second, and first mounting holes of the connecting member 14. Then, one end of the elastic member 32 is abutted against the third limit platform, and the other end is abutted against the button 31. The button 31 is connected to the connecting column 331 through threads, and the spring is in a natural state at this time.

[0085] (2) The process of unfolding and locking the spoke assembly 4: After the self-locking assembly is installed, a downward force is applied axially to press the button 31, and the elastic member 32 changes from a natural state to a compressed state. The connecting column 331 makes a downward axial movement in the connecting member 14, driving the chassis 33 to extend axially, ensuring that the locking tooth column 332 on the chassis 33 will not block the horizontal rotation of the spoke assembly 4.

[0086] Then, rotate the first spoke. Since the first spoke is stuck in the second opening 23 of the limiting ring 2 and abuts against the fifth tooth step and the second limiting platform 22, the limiting ring 2 rotates with the first spoke. Subsequently, the sixth tooth step drives the second spoke to rotate, the seventh tooth step drives the third spoke to rotate, and the eighth tooth step drives the fourth spoke to rotate, until the first tooth step and the fifth tooth step cooperate to fix the first spoke, the second and sixth tooth steps cooperate to fix the second spoke, the third and seventh tooth steps cooperate to fix the third spoke, and the fourth and eighth tooth steps cooperate to fix the fourth spoke. At this time, remove the downward force applied to the button 31, and the elastic member 32 drives the button 31 upward to return to its original position due to its own rebound effect. The button 31 drives the connecting column 331 to move upward, and the connecting column 331 drives the chassis 33 to move upward until the first tooth column and the first step lock the first spoke, the second tooth column and the first tooth column lock the second spoke, the third tooth column and the second tooth column lock the third spoke, and the fourth tooth column and the third tooth column lock the fourth spoke. At this time, the spoke assembly 4 is in an unfolded and locked state.

[0087] (3) The process of retracting and locking the spoke assembly 4: When the spoke assembly 4 needs to be stored, a downward force is applied to the button 31. At this time, the chassis 33 moves downward, and the lock on the spoke assembly 4 is removed, thereby releasing the spoke assembly 4. The first spoke is rotated to drive the limit ring 2 to rotate, and then the second limit platform 21 drives the second, third and fourth spokes to rotate until the first, second, third and fourth spokes are retracted and confined between the second limit platform 21 and the first limit platform 122. At this time, the downward force applied to the button 31 is removed, and the button 31 drives the chassis 33 to return to its original position. The locking tooth column 332 of the chassis 33 limits the rotation of the spoke assembly 4. At this time, the locking end of the spoke assembly 4 is locked, thereby storing the spoke assembly 4.

[0088] Example 2

[0089] When camping, outdoor equipment such as mosquito nets or tents are often needed. Outdoor portable mosquito nets are relatively rare on the market, and outdoor tents are either complicated to install or bulky and have many parts. If a part is lost or damaged, the entire tent cannot be used, which increases the difficulty of using the tent outdoors and makes it inconvenient to use the tent outdoors. The present invention provides a foldable outdoor tent bracket according to Example 1 to solve the problem that the existing tents are not convenient to use outdoors. Figures 12 to 17 As shown, it includes a main rod 5, a spoke assembly 4 and a connecting rod 6. One end of the main rod 5 is rotatably connected to one end of another main rod 5 to form a group of main rods. The other ends of the two main rods 5 rotatably connected to each other are respectively rotatably connected to the spoke assembly 4. The spoke assembly 4 can rotate around the end of the main rod 5, so that the spoke assembly 4 can be folded or opened. The connecting rod 6 connects two groups of main rods parallel to each other. In the embodiment of the present invention, two groups of main rods are provided.

[0090] like Fig.16 As shown, the main rod 5 includes a first end 51, a second end 52 and a connecting portion 53. The first end 51 of the main rod 5 is connected to the first end 51 of another main rod 5, the second end 52 is connected to the spoke assembly 4, and the connecting portion 53 connects the first end 51 and the second end 52. The first end 51 includes a first connecting portion 511 and a first limiting portion 512, and the first connecting portion 511 and the first limiting portion 512 are arranged along the width direction of the main rod 5.

[0091] In this embodiment, the first connecting portion 511 is two parallel disks, and a through hole is provided in the middle of the disk for mounting the main rod shaft 8. The main rod shaft 8 passes through the first connecting portion 511 of the two main rods 5 connected to each other, so that the two main rods 5 connected to each other can rotate relative to each other around the main rod shaft 8. The first limiting portion 512 is an arc surface, and the shape of the first limiting portion 512 is adapted to the shape of the first connecting portion 511, so that the first connecting portion 511 can rotate along the first limiting portion 512 of the other main rod 5 connected thereto, so that the two main rods 5 connected to each other can achieve 0°-180° opening and closing.

[0092] The connecting portion 53 is provided with a spoke groove 531 . When the spoke assembly 4 is folded, the spoke assembly 4 is located in the spoke groove 531 , and the spoke assembly 4 is not higher than the upper surface of the main rod 5 , so that the two main rods 5 connected to each other can be folded and folded.

[0093] One end of the spoke assembly 4 away from the self-locking mechanism is a hook-shaped structure. When the spoke assembly 4 is retracted, the hook-shaped structure at the end of the spoke assembly 4 can hook the main rod shaft 8, thereby fixing the spoke assembly 4 in the retracted state.

[0094] Furthermore, in order to increase the area that the outdoor tent support can support when it is opened, the outdoor tent support of this embodiment is provided with two sets of main poles, which are arranged in parallel and the ends of the two sets of main poles are connected by connecting rods 6 and connecting rod shaft discs 7 respectively.

[0095] Specifically, one end of the connecting rod 6 is rotatably connected to the bottom of the main rod 5, and the other end of the connecting rod 6 is rotatably connected to the connecting rod shaft disc 7. A connecting rod groove is provided at the bottom of the main rod 5. When two sets of parallel main rods are close to each other, the connecting rod 6 can be retracted into the connecting rod groove, so that the two sets of main rods are close to each other, reducing the size of the outdoor tent support after being retracted. When the outdoor tent support needs to be opened, the two sets of main rods are pulled away from each other.

[0096] In this embodiment, when the tent frame needs to be folded, the spoke assembly 4 is first folded and fixed in the spoke groove 531, and then the two sets of main rods are brought closer to each other, and the connecting rod 6 is put into the connecting rod groove. Finally, the two main rods of each set of main rods are folded together, and the state after folding is as follows: Fig.15 shown.

[0097] The outdoor tent support of this embodiment has the same length as one main pole after folding, and its width and thickness are respectively twice the length and width of one main pole. It is compact and light in the folded state, easy to carry, and suitable for outdoor use. When opened, the main pole, connecting rod and spoke assembly support each other, and have strong structural strength.

[0098] The beneficial effects of the present invention are as follows:

[0099] 1. In the self-locking mechanism designed by the present invention, the limiting ring and the self-locking assembly are both installed inside the housing, and the spoke assembly also moves inside the housing. This structure is compact, light and easy to carry.

[0100] 2. The present invention provides a limiting ring, and only the first spoke needs to be rotated, and the first spoke can drive other spokes to rotate and unfold. The self-locking mechanism has a simple structure, a simple motion relationship and is easy to operate.

[0101] 3. The limiting ring and the matching part of the present invention form a fourth limiting platform, which limits the depth of the chassis entering the shell to prevent the chassis from touching the matching part and causing damage to the shell, making the self-locking mechanism more stable.

[0102] 4. The fifth mounting hole of the shell provided in the present invention is provided with a limiting hole, and the limiting strip is fixedly matched with the limiting hole. This structure is used to limit the horizontal rotation of the chassis, thereby enhancing the stability and strength of the self-locking mechanism.

[0103] 5. The present invention realizes the unfolding and folding locking of the spoke assembly by adopting the unfolding and folding characteristics of the fan structure, and is suitable for products that need to be unfolded and folded and locked and are restricted by space and transportation environment.

[0104] 6. The foldable outdoor tent stand provided by the present invention adopts a folding fan structure and realizes the unfolding and folding of the mosquito net through a self-locking mechanism, which is easy to use; the foldable outdoor tent stand of the present invention is small and light in the folded state, suitable for outdoor use, has strong structural strength in the unfolded state, and is convenient and quick to fold and unfold.

[0105] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A self-locking mechanism, characterized in that: It comprises a housing (1), a limiting ring (2) and a self-locking component (3), wherein the housing (1), the limiting ring (2) and the self-locking component (3) are all detachably connected; The housing (1) cooperates with the limiting ring (2) to limit the rotational position and distance of the spoke assembly (4); The self-locking component (3) moves axially to control the release and retraction of the spoke component (4), thereby achieving the expansion and storage locking of the spoke component (4); The housing (1) comprises a mounting portion (11), a matching portion (12) and an opening portion (13); a mounting opening (111) is provided at the centre of the mounting portion (11); a limiting groove (112) is further provided on the inner side surface of the mounting portion (11); the limiting groove (112) is used to mount a limiting ring (2); the limiting ring (2) rotates in the limiting groove (112); The matching portion (12) is provided with a first limiting tooth (121), the first limiting tooth (121) is step-shaped and has multiple tooth steps, the matching portion (12) is also provided with a first limiting platform (122), the first limiting platform (122) is a platform; the matching portion (12) is also provided with a first opening (123), the first opening (123) is arranged between the first limiting platform (122) and the tooth step closest to the first limiting platform (122), and the first opening (123) is connected to the opening portion (13); The limiting ring (2) and the self-locking component (3) are installed in the housing (1) through the opening portion (13), and the self-locking component (3) performs axial extension and retraction movements in the opening portion (13); The housing (1) further comprises a connecting piece (14), the connecting piece (14) being detachably connected to the mounting portion (11) and the self-locking assembly (3), the connecting piece (14) comprising a connecting plate (141) and a sleeve (142), the external thread of the connecting plate (141) being matched and fixedly connected with the internal thread of the mounting opening (111); The mounting end of the spoke assembly (4) is sleeved on the sleeve (142), and the spoke assembly (4) can rotate on the sleeve (142); The limiting ring (2) comprises a second limiting tooth (21), the second limiting tooth (21) is step-shaped and has multiple tooth steps, and the second limiting tooth (21) cooperates with the first limiting tooth (121); the limiting ring (2) also comprises a second limiting platform (22), and when the second limiting platform (22) and the first limiting platform (122) are close to each other, the spoke assembly (4) can be retracted; the limiting ring (2) is provided with a second opening (23) at the tooth step closest to the second limiting platform (22), and the second opening (23) is used to clamp the spoke assembly (4), so that the limiting ring (2) rotates as the spoke assembly (4) unfolds and rotates.

2. A self-locking mechanism according to claim 1, characterized in that: A second mounting hole and a third mounting hole are coaxially arranged at the center of the sleeve (142); the diameter of the second mounting hole is larger than the diameter of the third mounting hole.

3. A self-locking mechanism according to claim 2, characterized in that: A third limiting platform is formed at the connection between the second mounting hole and the third mounting hole.

4. A self-locking mechanism according to claim 3, characterized in that: The self-locking component (3) comprises a button (31) and an elastic member (32); one end of the elastic member (32) abuts against the button (31), and the other end abuts against the third limit platform.

5. A self-locking mechanism according to claim 1, characterized in that: The self-locking assembly (3) further comprises a chassis (33), wherein the chassis (33) is installed in the housing (1).

6. A self-locking mechanism according to claim 5, characterized in that: The chassis (33) comprises a locking tooth column (332).

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