Center lock device for folding tent and folding tent

Abstract

The center lock device comprises a center top cap, a center lock rod and a center bottom cap, the center lock rod comprises a metal rod body and a lock head made of plastic, the metal rod body is of a hollow pipe body structure, the center top cap is fixedly arranged at the upper end of the metal rod body, the lock head is fixed at the lower end of the metal rod body, and the center bottom cap is fixedly arranged at the lower end of the metal rod body. A lock groove is formed in the lock head, a locking piece limited to move on a straight line and an elastic piece providing reset force for the locking piece are arranged on the center bottom cap, a lock hole allowing the lock head to penetrate through is formed in the locking piece, a clamping part is arranged on the edge of the lock hole, the lock head penetrates through the lock hole, and the clamping part is clamped into the lock groove to lock the lock head. When the locking piece is pressed by external force, the locking piece moves relative to the center bottom cap to enable the clamping portion to be separated from the locking groove to achieve unlocking, and the metal rod body is of a hollow pipe structure and is low in material cost and machining cost.

Description

Technical Field

[0001] The utility model relates to a folding tent, in particular to a central locking device for the folding tent and the folding tent. Background Art

[0002] Folding tents are widely popular among users due to their advantages such as easy assembly, convenient carrying and simple folding, and have become one of the must-have leisure products commonly used outdoors. Folding tents are mainly composed of a tarpaulin and a tent frame for supporting the tent cloth. The tent frame of existing folding tents generally includes an upper frame rod group, a lower frame rod group and a center locking structure. The center locking structure includes a first mold base and a second mold base for installing the upper frame rod group and the lower frame rod group, and then the first mold base and the second mold base are fixed, so that the upper frame rod group and the lower frame rod cooperate to form a skeleton for supporting the tarpaulin.

[0003] For example, Chinese invention patent CN111287548A discloses a center lock and a tent, which include supporting legs, an internal telescopic unit and a center lock. The center lock includes a center pole, a center top cap fixed at one end of the center pole, and a center bottom cap detachably connected to the other end of the center pole. The supporting legs are connected to the center lock through the internal telescopic unit. The center bottom cap accommodates a locking member, which is provided with a first through hole for allowing the center pole to pass through. The center pole is an integrally formed metal rod body, and an annular groove is provided on the side wall of the center pole near the lower end, so that a locking portion is provided at the end of the center pole, and the upper end face of the locking portion abuts against the lower end face of the locking member; when the center lock is in an unlocked state, the locking portion can pass through the first through hole.

[0004] In order to process the annular groove on the side wall of the center rod in the existing center lock, the center rod is generally set as an integrally formed and solid metal rod body, which has a high material cost and also increases the weight of the center rod. In addition, the processing cost of processing the groove on the metal rod body is high. If the center rod is made of plastic material as a whole, it is not strong enough for connection. Utility Model Content

[0005] In view of the problems that the above-mentioned center pole is a solid metal pole body with high material and processing costs and heavy weight, the utility model provides a center locking device for a folding tent and a folding tent.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a center lock device for a folding tent, comprising a center top cap, a center locking rod and a center bottom cap, the center locking rod comprising a metal rod body and a locking head made of plastic, the metal rod body being a hollow tubular structure, the center top cap being fixed to the upper end of the metal rod body, the locking head being fixed to the lower end of the metal rod body, a locking groove being provided on the lock head, the center bottom cap being provided with a locking member that limits movement in a straight line, and an elastic member that provides a reset force to the locking member, a locking hole being provided on the locking member for the locking head to pass through, a clamping portion being provided on the edge of the lock hole, the locking head passing through the lock hole and the clamping portion being clamped into the lock groove to lock the lock head, and when the locking member is pressed by external force, the locking member moves relative to the center bottom cap to cause the clamping portion to disengage from the lock groove to achieve unlocking.

[0007] A further preferred technical solution of the present invention is that a plurality of lock grooves are sequentially provided in the length direction of the lock head, and the spacing between the center bottom cap and the center top cap can be changed by snapping the engaging portion into different lock grooves.

[0008] The lock head is inserted into the channel and is engaged with the locking portion in the channel, and the second locking portion is engaged with the locking portion in the channel.

[0009] A further preferred technical solution of the present invention is: a laterally extending guide block is provided on the inner side of the button part, and a guide through hole connected to the second accommodating cavity is provided on the groove wall opposite to the groove opening of the accommodating groove, and the guide block is inserted into the guide through hole and moves to guide the movement of the button part.

[0010] A further preferred technical solution of the present invention is: a limiting pin is inserted into the center bottom cap, and a limiting long hole is provided through the button portion, and the limiting pin passes through the limiting long hole to limit the range of movement of the button portion relative to the center bottom cap.

[0011] A further preferred technical solution of the present invention is that a plug-in block is fixedly provided on the upper end of the lock head, the plug-in block is inserted into the lower end of the metal rod body, and is fixed by punching dots on the side wall of the metal rod body.

[0012] A further preferred technical solution of the present invention is that the upper and lower groove walls of the locking groove are both inclined surfaces.

[0013] A further preferred technical solution of the present invention is: the top surface of the clamping portion is arranged to be inclined, and a guide edge is provided between the side wall and the bottom surface of the lock head. When the lock head is inserted into the lock hole, the clamping portion contacts the lock head and the two are displaced from each other through extrusion and the guidance of the inclined top surface of the clamping portion and the guide edge.

[0014] Another topic: A center lock device for a folding tent, comprising a center top cap, a center locking rod and a center bottom cap, the center locking rod comprising a metal rod body and a locking head made of plastic, the metal rod body being a tubular structure with a hollow interior, the center top cap being fixed to the upper end of the metal rod body, the locking head being fixed to the lower end of the metal rod body, the locking head being provided with a locking groove, the center bottom cap being provided with a locking member that limits movement in a straight line, and an elastic member that provides a reset force to the locking member, the locking member being provided with a locking hole for the locking head to pass through, the locking head passing through the locking hole and the edge of the locking hole being stuck in the locking groove to lock the lock head, and when the locking member is pressed by external force, the locking member moves relative to the center bottom cap so that the edge of the locking hole disengages from the locking groove to achieve unlocking.

[0015] Another topic: a folding tent, including a central locking device and an internal telescopic unit for the folding tent, wherein the internal telescopic unit includes a first inclined top tube, one end of the first inclined top tube is hinged to the central top cap, a first connecting rod is hinged on the first inclined top tube, and the other end of the first connecting rod is hinged to the central bottom cap.

[0016] Compared with the prior art, the advantage of the present invention is that the central locking rod is divided into two sections, one section is a metal rod body, and the other section is a lock head made of plastic. The lock head is fixed to the lower end of the metal rod body, and a lock groove that is engaged with the locking piece is provided on the lock head, so that the metal rod body can be made into a hollow tubular structure. While ensuring the overall hardness and firmness of the central locking rod, the material cost is saved and the weight is reduced. In addition, the lock groove is provided on the plastic lock head, which reduces the processing cost compared to the lock groove provided on the metal. When locking, due to the certain elasticity of the plastic, the clamping part can be clamped more tightly in the lock groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be construed as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings are merely schematic representations of the composition or structure of the depicted objects and may contain exaggerated representations. Furthermore, the drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a structural diagram of Example 1 when the center lock rod and the center bottom cap are separated;

[0019] Figure 2 This is a structural diagram of the center bottom cap of Example 1;

[0020] Figure 3 This is an exploded view of the components on the center bottom cap of Example 1;

[0021] Figure 4 Schematic diagram of the structure of the locking member in Example 1 Figure 1 ;

[0022] Figure 5 Schematic diagram of the structure of the locking member in Example 1 Figure 2 ;

[0023] Figure 6 This is a structural diagram of the central locking rod of Example 1;

[0024] Figure 7 This is an exploded view of the lock head and metal rod body of Example 1;

[0025] Figure 8 This is a structural diagram of the lock head in Example 1;

[0026] Figure 9 Schematic diagram of a transverse cross-section of the center bottom cap of Example 1;

[0027] Figure 10 This is a structural diagram of Example 1 when the center lock rod and the center bottom cap are connected;

[0028] Figure 11 It is a cross-sectional schematic diagram of the connection state between the center lock rod and the center bottom cap of Example 1;

[0029] Figure 12 for Figure 11 A partial enlarged view of point A.

[0030] In the figure: 1. inner telescopic unit; 2. first inclined tube; 3. first connecting rod; 4. center top cap; 5. metal rod body; 6. locking head; 7. locking groove; 8. center bottom cap; 9. locking member; 10. channel; 11. pin hole; 12. button part; 13. limiting long hole; 14. accommodating groove; 15. connecting hole 1; 16. accommodating cavity 1; 17. guide through hole; 18. elastic member; 19. bottom cover; 20. locking block; 21. guide block; 22. positioning column 1; 23. positioning column 2; 24. clamping part; 25. plug-in block; 26. head; 27. guide edge; 28. limiting pin shaft; 29. ​​center locking rod; 30. mounting groove; 31. first channel; 32. second channel; 33. locking hole; 34. accommodating cavity 2; 35. connecting hole 2. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0032] It should be noted that like reference numerals denote like items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0033] Example 1

[0034] Figures 1-12 As shown, the folding tent comprises support legs, an inner telescopic unit 1, and a central locking mechanism. The support legs comprise at least three, each connected to an inner telescopic unit 1. Multiple support legs and the inner telescopic units 1 form the tent frame, which can be covered with a tarpaulin. The inner ends of the multiple inner telescopic units 1 are connected via a central locking mechanism. The inner telescopic unit 1 comprises a first inclined tube 2, hingedly connected to a first connecting rod 3. The support legs in this embodiment are not shown in the accompanying drawings, and four inner telescopic units 1 are provided. The tent frame in this patent is identical to conventional folding tents and will not be further elaborated in this embodiment. The only difference lies in the central locking mechanism. For details on the tent frame structure, reference may be made to the disclosure in CN111287548A.

[0035] The center locking device includes a center top cap 4, a center locking rod 29 and a center bottom cap 8. The inner end of the above-mentioned first inclined tube 2 is hinged on the center top cap 4, one end of the first connecting rod 3 is hinged on the center bottom cap 8, and the upper end of the center locking rod 29 is fixedly connected to the center top cap 4.

[0036] Figure 6-Figure 8 As shown, the center locking rod 29 includes a metal rod body 5 and a lock head 6 made of plastic material. The metal rod body 5 is a hollow tubular structure. The center top cap 4 is fixed to the upper end of the metal rod body 5, and the lock head 6 is fixed to the lower end of the metal rod body 5. A lock slot 7 is provided on the lock head 6.

[0037] The bottom of the center top cap 4 defines a mounting slot 30, into which the upper end of the metal rod 5 is inserted and fixedly connected to the center bottom cap 8. The upper end of the metal rod 5 can be securely fastened to the wall of the mounting slot 30 by a tight fit; alternatively, the upper end of the metal rod 5 can be secured via a pin after insertion; or alternatively, the upper end of the metal rod 5 can be glued to the inner wall of the mounting slot 30 after insertion. This patent is not limited to the three aforementioned fixing methods; other conventional fixing methods are also applicable.

[0038] A plug-in block 25 is fixed to the upper end of the lock head 6. The plug-in block 25 is integrally injection-molded with the lock head 6. The plug-in block 25 is inserted into the interior of the metal rod 5 through an opening at the lower end of the metal rod 5. A convex portion is formed on the inner wall of the metal rod 5 by stamping on the side wall of the metal rod 5. The convex portion presses against the plug-in block 25, securing the plug-in block 25 and the metal rod 5 together, thereby securing the lock head 6 to the lower end of the metal rod 5. A step is formed between the plug-in block 25 and the lock head 6 for abutting against the lower edge of the metal rod 5. The plug-in block 25 can also be directly plugged into the metal rod 5 for fastening; or the plug-in block 25 can be inserted into the metal rod 5 and then a pin passes through both the metal rod 5 and the plug-in block 25, securing the two together.

[0039] Preferably, the metal rod 5 is a square tube, the mounting groove 30 is a square groove adapted to the shape of the square tube, and the plug-in block 25 is a square column structure.

[0040] Figure 1 、 Figure 2 、 Figure 10 、 Figure 11 、 Figure 12 As shown, the center bottom cap 8 is provided with a locking member 9 that limits movement in a straight line, and an elastic member 18 that provides a reset force to the locking member 9. The locking member 9 is provided with a lock hole 33 for the lock head 6 to pass through, and a clamping portion 24 is provided on the edge of the lock hole 33. The lock head 6 passes through the lock hole 33 and the clamping portion 24 is clamped into the lock groove 7 to lock the lock head 6, so that the lower end of the center lock rod 29 is connected to the center bottom cap 8. When the locking member 9 is pressed by external force, the locking member 9 moves relative to the center bottom cap 8 to disengage the clamping portion 24 from the lock groove 7 to achieve unlocking. At this time, the lock head 6 can disengage from the lock hole 33, thereby separating the lower end of the center lock rod 29 from the center bottom cap 8.

[0041] This patent divides the central locking rod 29 into two sections, one section is a metal rod body 5, and the other section is a lock head 6 made of plastic. The lock head 6 is fixed to the lower end of the metal rod body 5, and a lock groove 7 is provided on the lock head 6 to engage with the locking member 9, so that the metal rod body 5 can be made into a hollow tubular structure. While ensuring the overall hardness and firmness of the central locking rod 29, the material cost is saved and the weight is reduced. In addition, the lock groove 7 is provided on the plastic lock head 6, which reduces the processing cost compared to the lock groove 7 provided on the metal. When locking, due to the certain elasticity of the plastic, the clamping part 24 can be clamped more tightly into the lock groove 7.

[0042] The central bottom cap 8 is a cylindrical structure. The locking member 9 is provided on the central bottom cap 8 and can move linearly along the radial direction of the central bottom cap 8 .

[0043] Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 12 As shown, the locking member 9 includes a button portion 12, a locking block 20 provided on the inner side of the button portion 12 and extending laterally, a lock hole 33 is provided on the locking block 20, a accommodating groove 14 is provided on the side wall of the center bottom cap 8, the accommodating groove 14 has a notch located on the side wall of the center bottom cap 8, and a accommodating cavity 16 and a accommodating cavity 2 34 are formed in the center bottom cap 8 on one side of the accommodating groove 14, the accommodating cavity 16 is located above the accommodating cavity 2 34, and a channel 10 for inserting the lock head 6 is provided in the center bottom cap 8, the channel 10 has a channel opening located at the top of the center bottom cap 8, the lower end of the channel 10 is connected to the accommodating cavity 16, and the accommodating cavity 16 is located above the accommodating cavity 2 34. A communicating hole 15 is provided between the second cavity 34 and is opposite to the channel 10. A communicating hole 2 35 communicating with the first cavity 16 is provided on the groove wall of the accommodating groove 14 opposite to its notch. The button portion 12 is inserted in the accommodating groove 14 and can move linearly relative to the center bottom cap 8. The locking block 20 is inserted into the first cavity 16 through the communicating hole 2 35 and the locking hole 33 is opposite to the channel 10. The lock head 6 is inserted downward into the channel 10 and is engaged with the engaging portion 24 in the first cavity 16. At this time, the lock head 6 partially passes through the communicating hole 15 and is inserted into the second cavity 34. The second cavity 34 is used to accommodate part of the lock head 6 that passes through the first cavity 16.

[0044] The button portion 12 has a large pressing area, which is convenient for the operator to operate.

[0045] The accommodating groove 14 is configured to be in a shape matching the button portion 12 . The button portion 12 is inserted into the accommodating groove 14 . The groove wall of the accommodating groove 14 restricts the button portion 12 from moving in the radial direction of the center bottom cap 8 .

[0046] The engaging portion 24 is a horizontally placed card plate disposed on an edge of the locking hole 33 away from the button portion 12 . The card plate is located in the locking hole 33 .

[0047] Figure 12 As shown, the elastic member 18 is a return spring, and there are two return springs. A positioning post 1 22 is provided on the side of the lock block 20 away from the button portion 12. One return spring is sleeved on the positioning post 1 22, with one end resting on the inner wall of the cavity 16. The inner wall of the button portion 12 is provided with a positioning post 23. The other return spring is sleeved on the positioning post 23, with one end resting on the groove wall of the accommodating groove 14 opposite its notch. The positioning post 1 22 and the positioning post 2 23 are arranged vertically. The return spring has an elastic force that pushes the button portion 12 out of the notch of the accommodating groove 14. The two upper and lower return springs push the locking member 9 to move, so that the reset force on the entire locking member 9 is more uniform, making it less likely for the locking member 9 to get stuck and unable to move outward.

[0048] Figure 3 、 Figure 9As shown, the center bottom cap 8 is provided with a pin hole 11 extending through the receiving groove 14. A limiting pin 28 is inserted into the pin hole 11. The button portion 12 is provided with a limiting elongated hole 13 extending along the movement direction of the button portion 12. The limiting pin 28 passes through the limiting elongated hole 13 to limit the range of movement of the button portion 12 relative to the center bottom cap 8, thereby restricting the button portion 12 from moving on the center bottom cap 8. The axial direction of the limiting pin 28 is perpendicular to the movement direction of the button portion 12.

[0049] A laterally extending guide block 21 is provided on the inner side of the button portion 12, and a guide through hole 17 connected to the second accommodating cavity 34 is provided on the groove wall opposite to the groove opening of the accommodating groove 14. The guide block 21 is inserted into the guide through hole 17 and movably guides the movement of the button portion 12, so that the button portion 12 is more stable when moving back and forth on the center bottom cap 8.

[0050] Preferably, the channel 10 along the direction of the lock head 6 being inserted into the center bottom cap 8 includes a first channel 31 and a second channel 32 connecting the first channel 31 and the cavity 16. The size of the first channel 31 gradually decreases from top to bottom to facilitate the downward insertion of the lock head 6 into the channel 10.

[0051] Figure 12 As shown, the top surface of the engaging portion 24 is inclined, and a guide edge 27 is provided between the side wall and bottom surface of the lock head 6. When the lock head 6 is inserted into the lock hole 33, the lock head 6 contacts the engaging portion 24 and presses the engaging portion 24 downward. During the squeezing process, the lock head 6 pushes the engaging portion 24 along the inclined top surface of the engaging portion 24 and the guide edge 27, causing the engaging portion 24 to be misaligned with each other. At this point, the lock head 6 can pass downward through the lock hole 33 and engage with the engaging portion 24. This structure eliminates the need to press the button portion 12 internally to misalign the lock head 6 with the engaging portion 24 when connecting the center lock rod 29 to the center bottom cap 8.

[0052] Figure 8 As shown, preferably, the head 26 at the lower end of the lock head 6 is a prism-shaped structure that is larger at the top and smaller at the bottom. The four sides of the head 26 have inclined surfaces, and the inclined surface on one side serves as the above-mentioned guide edge 27.

[0053] When the lock head 6 moves to the position where the lock groove 7 and the clamping portion 24 are opposite to each other, the reset spring pushes the button portion 12 and the lock block 20 to move outward, so that the clamping portion 24 is clamped into the lock groove 7 to form a clamping connection. At this time, the folding tent is unfolded and used. Alternatively, the engaging portion 24 can be moved inward by pressing the button portion 12 inward, and then the lock head 6 can be inserted into the channel 10. After the lock head 6 passes through the lock hole 33, the button portion 12 can be released. At this time, the return spring pushes the lock block 20 and the button portion 12 to move outward, so that the engaging portion 24 is engaged in the lock groove 7 to form a locking connection.

[0054] When unlocking, by pressing the button portion 12 inward, the button portion 12, the locking block 20 and the clamping portion 24 move inward, so that the clamping portion 24 disengages from the lock groove 7. At this time, the clamping portion 24 no longer restricts the lock head 6 from moving upward, and the lock head 6 can be pulled upward from the center bottom cap 8.

[0055] Figure 8 As shown, the lock head 6 is provided with a plurality of locking slots 7 along its length. When connected, the engaging portion 24 is engaged with different locking slots 7 to change the spacing between the center bottom cap 8 and the center top cap 4, thereby achieving different degrees of unfolding effect of the folding tent. The locking slot 7 is an annular groove formed on the side wall of the lock head 6.

[0056] Figure 12 As shown, preferably, the upper and lower groove walls of the lock groove 7 are both inclined surfaces. The user can pull up or press down the central lock rod 29 to make the inclined groove wall of the lock groove 7 contact with the clamping portion 24 to form an extrusion. During the extrusion process, the clamping portion 24 is pushed along the inclined groove wall to disengage the lock groove 7, thereby realizing the step-by-step switching of the clamping portion 24 between the lock grooves 7. The lock groove 7 in which the clamping portion 24 is engaged can also be switched by pressing the button portion 12.

[0057] The bottom of the central bottom cap 8 has an opening communicating with the second cavity 34 , and a bottom cover 19 is detachably mounted on the opening.

[0058] Example 2

[0059] The only difference between this embodiment and the first embodiment is the location where the locking member 9 engages with the lock groove 7 on the lock head 6. The details are as follows:

[0060] The center locking device includes a center top cap 4, a center locking rod 29 and a center bottom cap 8. The inner end of the first inclined tube 2 is hinged to the center top cap 4, one end of the first connecting rod 3 is hinged to the center bottom cap 8, and the other end of the first connecting rod 3 is hinged to the first inclined tube 2. The upper end of the center locking rod 29 is fixedly connected to the center top cap 4.

[0061] The center lock rod 29 includes a metal rod body 5 and a lock head 6 made of plastic material. The metal rod body 5 is a hollow tubular structure. The center top cap 4 is fixed to the upper end of the center rod body, and the lock head 6 is fixed to the lower end of the metal rod body 5. A lock slot 7 is provided on the lock head 6.

[0062] The bottom of the center top cap 4 defines a mounting slot 30, into which the upper end of the metal rod 5 is inserted and fixedly connected to the center bottom cap 8. The upper end of the metal rod 5 can be securely fastened to the wall of the mounting slot 30 by a tight fit; alternatively, the upper end of the metal rod 5 can be secured via a pin after insertion; or alternatively, the upper end of the metal rod 5 can be glued to the inner wall of the mounting slot 30 after insertion. This patent is not limited to the three aforementioned fixing methods; other conventional fixing methods are also applicable.

[0063] A plug-in block 25 is fixed to the upper end of the lock head 6. The plug-in block 25 is integrally formed with the lock head 6 and inserted into the interior of the metal rod 5 through an opening at the lower end of the metal rod 5. A convex portion is formed on the inner wall of the metal rod 5 by stamping on the side wall of the metal rod 5. The convex portion presses against the plug-in block 25, securing the plug-in block 25 and the metal rod 5 together, thereby securing the lock head 6 to the lower end of the metal rod 5. A step is formed between the plug-in block 25 and the lock head 6 for abutting against the lower edge of the metal rod 5. The plug-in block 25 can also be directly plugged into the metal rod 5 for fastening; or the plug-in block 25 can be inserted into the metal rod 5 and then a pin passes through both the metal rod 5 and the plug-in block 25, securing the two together.

[0064] Preferably, the metal rod body 5 is a square tube, the mounting groove 30 is located in a square groove that matches the shape of the square tube, and the plug-in block 25 is a square column structure.

[0065] The center bottom cap 8 is provided with a locking member 9 that limits movement in a straight line, and an elastic member 18 that provides a reset force to the locking member 9. The locking member 9 is provided with a lock hole 33 for the lock head 6 to pass through. The lock head 6 passes through the lock hole 33 and the edge of the lock hole 33 is stuck in the lock groove 7 to lock the lock head 6, so that the lower end of the center lock rod 29 is connected to the center bottom cap 8. When the locking member 9 is pressed by external force, the locking member 9 moves relative to the center bottom cap 8 so that the edge of the lock hole 33 disengages from the lock groove 7 to achieve unlocking. At this time, the lock head 6 can disengage from the lock hole 33, thereby separating the lower end of the center lock rod 29 from the center bottom cap 8.

[0066] This patent divides the central locking rod 29 into two sections, one section is a metal rod body 5, and the other section is a locking head 6. The locking head 6 is fixed to the lower end of the metal rod body 5. A locking groove 7 is provided on the locking head 6 to engage with the locking piece 9, so that the metal rod body 5 can be made into a hollow tubular structure. While ensuring the overall hardness and firmness of the central locking rod 29, the material cost is saved and the weight is reduced. In addition, the locking groove 7 is provided on the plastic locking head 6, which reduces the processing cost compared to the locking groove 7 provided on the metal. When locking, due to the certain elasticity of the plastic, the edge of the lock hole 33 can be locked more tightly in the lock groove 7.

[0067] The central bottom cap 8 is a cylindrical structure. The locking member 9 is provided on the central bottom cap 8 and can move linearly along the radial direction of the central bottom cap 8 .

[0068] The above describes the central locking device for a folding tent and the folding tent provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The above examples are intended only to facilitate understanding of the present invention and its core concepts. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications fall within the scope of protection of the claims of the present invention.

Claims

1. A center locking device for a folding tent, comprising a center top cap, a center locking rod and a center bottom cap, characterized in that: The center locking rod includes a metal rod body and a lock head made of plastic. The metal rod body is a hollow tubular structure. The center top cap is fixed to the upper end of the metal rod body, and the lock head is fixed to the lower end of the metal rod body. The lock head is provided with a lock slot. The center bottom cap is provided with a locking piece that limits movement in a straight line, and an elastic piece that provides a reset force to the locking piece. The locking piece is provided with a lock hole for the lock head to pass through, and a clamping portion is provided on the edge of the lock hole. The lock head passes through the lock hole and the clamping portion is clamped into the lock slot to lock the lock head. When the locking piece is pressed by external force, the locking piece moves relative to the center bottom cap to disengage the clamping portion from the lock slot to achieve unlocking.

2. The center lock device for a folding tent according to claim 1, characterized in that: A plurality of locking grooves are sequentially provided in the length direction of the lock head, and the distance between the central bottom cap and the central top cap can be changed by clamping the clamping portion into different locking grooves.

3. The center lock device for a folding tent according to claim 1 or 2, characterized in that: The locking member includes a button portion, a locking block arranged on the inner side of the button portion and extending laterally, the locking block is provided with a lock hole passing through the lock block, the side wall of the center bottom cap is provided with a accommodating groove, a accommodating cavity one and a accommodating cavity two are formed in the center bottom cap, the accommodating cavity one is located on one side of the accommodating groove, the accommodating cavity one is located above the accommodating cavity two, a channel for inserting the lock head is provided in the center bottom cap, the channel has a channel opening located at the top of the center bottom cap, the lower end of the channel is connected with the accommodating cavity one, a communicating hole one opposite to the channel is provided between the accommodating cavity one and the accommodating cavity two, the groove wall opposite to its notch is provided with a communicating hole two communicating with the accommodating cavity one, the button portion is inserted in the accommodating groove and can move linearly relative to the center bottom cap, the locking block passes through the communicating hole two and is inserted into the accommodating cavity one, and the lock hole is opposite to the channel, the lock head is inserted downward into the channel to form a card engagement with the clamping portion in the accommodating cavity one, and the accommodating cavity two is used to accommodate part of the lock head passing through the accommodating cavity one.

4. The center lock device for a folding tent according to claim 3, characterized in that: A laterally extending guide block is provided on the inner side of the button portion, and a guide through hole communicating with the second accommodating cavity is provided on the groove wall opposite to the groove opening of the accommodating groove. The guide block is arranged in the guide through hole and moves to guide the movement of the button portion.

5. The center lock device for a folding tent according to claim 3, characterized in that: A limiting pin is inserted into the center bottom cap, and a through limiting long hole is provided on the button portion. The limiting pin passes through the limiting long hole to limit the range of movement of the button portion relative to the center bottom cap.

6. The center lock device for a folding tent according to claim 1, characterized in that: The upper end of the lock head is fixed with a plug-in block, which is inserted into the lower end of the metal rod body and fixed by punching points on the side wall of the metal rod body.

7. The center lock device for a folding tent according to claim 2, characterized in that: The upper and lower groove walls of the locking groove are both inclined surfaces.

8. The center lock device for a folding tent according to claim 1, characterized in that: The top surface of the clamping portion is inclined, and a guide edge is provided between the side wall and the bottom surface of the lock head. When the lock head is inserted into the lock hole, the clamping portion contacts the lock head and the two are displaced from each other through extrusion and the guidance of the inclined top surface of the clamping portion and the guide edge.

9. A central locking device for a folding tent, comprising a central top cap, a central locking rod and a central bottom cap, characterized in that: The center locking rod includes a metal rod body and a lock head made of plastic. The metal rod body is a hollow tubular structure. The center top cap is fixed to the upper end of the metal rod body, and the lock head is fixed to the lower end of the metal rod body. The lock head is provided with a lock groove. The center bottom cap is provided with a locking member that limits movement in a straight line, and an elastic member that provides a reset force to the locking member. The locking member is provided with a lock hole for the lock head to pass through. The lock head passes through the lock hole and the edge of the lock hole is stuck in the lock groove to lock the lock head. When the locking member is pressed by external force, the locking member moves relative to the center bottom cap so that the edge of the lock hole disengages from the lock groove to achieve unlocking.

10. Folding tent, characterized in that, The invention comprises a central locking device for a folding tent and an inner telescopic unit as described in any one of claims 1 to 9, wherein the inner telescopic unit comprises a first inclined top tube, one end of the first inclined top tube is hinged to the central top cap, a first connecting rod is hinged on the first inclined top tube, and the other end of the first connecting rod is hinged to the central bottom cap.

Images