Rotary center locking device for folding tent and folding tent

Abstract

The utility model discloses a folding tent rotary type center locking device and folding tent, including top tray, chassis subassembly and connecting top tray and chassis subassembly center lock bar, the chassis subassembly is separably connected to the lower end of center lock bar, chassis subassembly includes chassis main part and rotatablely set up on the chassis main part, and the chassis main part is equipped with the rotary lock piece. The rotary lock piece is provided with a lock groove allowing the lower end of the center lock rod to be inserted therein, a blocking part is fixedly arranged in the lock groove, the center lock rod is provided with an abutting part matched with the blocking part, in the locking state, the lower end of the center lock rod is inserted into the lock groove, and the blocking part rotates to the position opposite to the position above the abutting part so as to limit separation of the center lock rod and the lock groove. In the unlocking state, the blocking part rotates to the position where the blocking part and the abutting part are staggered, unlocking and locking are achieved in a rotating mode, the structure is simple, and operation is convenient.

Description

Technical Field

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

[0002] Folding tents are also known as advertising tents and awnings. They can be used for outdoor exhibitions, product promotions, celebration parties, exhibitions, tourism and leisure, field work, food stalls, and can also be used as long-term leisure facilities in parks, tourist resorts and scenic spots. Folding tents generally include foldable tent frames and tarpaulins. The tent frame includes a canopy frame and multiple supporting legs. The canopy frame is composed of an inner telescopic unit and an outer telescopic unit. The supporting legs are used to support the canopy frame, and the tarpaulin covers the canopy frame to achieve the effect of sunshade, rainproof or windproof. The folding tent uses a locking mechanism to lock the unfolded state of the tent.

[0003] For example, Chinese utility model patent CN210508639U discloses a new type of center locking device for a folding tent, which includes a top plate, a bottom plate assembly, and a center rod arranged between the top plate and the bottom plate assembly. The bottom plate assembly includes a bottom plate, a wrench assembly rotatably connected to the bottom plate, and a limit sleeve slidably connected to the bottom plate. The wrench assembly abuts against the limit sleeve, and the wrench assembly can drive the limit sleeve to slide. A limit component is arranged at the lower end of the center rod, and the limit component can be embedded in the bottom plate to lock with the limit groove. A first elastic element is arranged between the limit sleeve and the bottom plate.

[0004] The connection between the center rod and the chassis of the above-mentioned patent requires the limit sleeve to be pushed to move by turning the wrench, and finally the limit sleeve and the limit component at the lower end of the center rod are unlocked or locked. The structural linkage relationship used for locking inside the chassis is relatively complex, which increases the failure rate of components. Utility Model Content

[0005] Based on the connection between the center rod and the chassis, it is necessary to push the limit sleeve to move by turning the wrench, and finally the limit sleeve and the limit component at the lower end of the center rod are unlocked or locked. The linkage relationship of the locking structure is complicated. The utility model provides a rotary center locking device for a folding tent and a folding tent.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a rotary center locking device for a folding tent, comprising a top plate, a bottom plate assembly, and a center locking rod connecting the top plate and the bottom plate assembly, wherein the bottom plate assembly is detachably connected to the lower end of the center locking rod, the bottom plate assembly comprises a bottom plate body, and a rotary lock member rotatably arranged on the bottom plate body, the rotary lock member is provided with a locking groove for inserting the lower end of the center locking rod, a blocking portion is fixedly arranged in the locking groove, and the center locking rod is provided with abutting portion cooperating with the blocking portion,

[0007] In the locked state, the lower end of the central locking rod is inserted into the locking groove, and the blocking portion is rotated to a position above the abutting portion to limit the separation of the central locking rod and the locking groove.

[0008] In the unlocked state, the blocking portion rotates to a position offset from the abutting portion.

[0009] A further preferred technical solution of the utility model is: an elastic member for providing a restoring force to the rotary lock member is provided between the rotary lock member and the chassis body, and the elastic member is used to drive the rotary lock member to rotate and return to an initial position.

[0010] A further preferred technical solution of the utility model is: the blocking portion is a blocking protrusion convexly arranged on the inner wall of the lock groove, the abutting portion is a abutting protrusion convexly arranged on the circumference of the central lock rod, and the blocking protrusion or the abutting protrusion is provided with a guiding inclined surface. When the central lock rod moves relative to the chassis assembly and is inserted into the lock groove for connection, the abutting protrusion contacts the blocking protrusion and can push the rotating lock element and the blocking portion to rotate relative to the chassis body along the guiding inclined surface, so that the blocking portion and the abutting portion are misaligned.

[0011] A further preferred technical solution of the utility model is: a plurality of abutment protrusions are evenly arranged on the circumference of the central locking rod, a plurality of blocking protrusions are evenly arranged on the inner wall of the locking groove, a plurality of abutment protrusions correspond one to one with a plurality of blocking protrusions, and a gap is formed between two adjacent blocking protrusions for the abutment protrusions to pass through when they are misaligned.

[0012] A further preferred technical solution of the utility model is: a window corresponding to a position below the blocking portion is provided on the side wall of the rotating lock.

[0013] A further preferred technical solution of the utility model is as follows: the rotary lock comprises a central axis, a lock disk located above the chassis body, and a hand-turned disk located below the chassis body, the central axis passes through the chassis body and two ends are respectively fixedly connected to the lock disk and the hand-turned disk, the lock groove is arranged on the lock disk, a accommodating cavity is formed between the hand-turned disk and the chassis body, the elastic member is a reset spring arranged in the accommodating cavity, a dial plate is connected to the central axis, the dial plate is driven to rotate by the central axis, one end of the reset spring is supported on the chassis body, and the other end of the reset spring is supported on one side of the dial plate, a limiting portion blocking the other side of the dial plate is provided on the chassis body, and when the dial plate abuts against the limiting portion, the rotary lock rotates to the initial position.

[0014] A further preferred technical solution of the utility model is: a clamping groove is opened at the lower end of the central shaft, the paddle plate is clamped in the clamping groove, the end of the central shaft has an inlet for the paddle plate to enter the clamping groove, a slot is provided on the inner bottom of the hand-turned disk, the lower end of the central shaft is inserted into the slot, and is fixed by a pin shaft passing through the central shaft and the hand-turned disk.

[0015] A further preferred technical solution of the utility model is: the upper end of the central locking rod is fixedly connected to the top plate, the central locking rod includes a rod body, and a connecting head fixedly connected to the lower end of the rod body, the upper end of the rod body is fixedly connected to the top plate, the abutment portion is arranged on the circumferential side wall of the connecting head, the bottom of the connecting head is provided with a positioning column extending downward, and the bottom of the locking groove is provided with a positioning hole for the positioning column to be inserted and positioned.

[0016] A further preferred technical solution of the utility model is: a first connecting seat for hingedly connecting the support rod of the folding tent is provided on the chassis body, and a second connecting seat for hingedly connecting the top frame rod of the folding tent is provided on the top plate.

[0017] Another subject: A folding tent, comprising support legs, an inner telescopic unit and a rotating center locking device for the folding tent, wherein the inner telescopic unit comprises a support rod and a top frame rod, wherein one end of the top frame rod is hinged to the top plate, one end of the support rod is hinged to the chassis body, and the other end of the support rod is hinged to the top frame rod.

[0018] Compared with the prior art, the advantage of the utility model is that the chassis assembly is detachably connected to the lower end of the center locking rod, the chassis assembly includes a chassis body, and a rotating lock member rotatably arranged on the chassis body, the rotating lock member is provided with a locking groove for the lower end of the center locking rod to be inserted, and a blocking portion is provided in the locking groove, and the center locking rod is provided with an abutment portion that cooperates with the blocking portion. In the locked state, the lower end of the center locking rod is inserted into the locking groove, and the blocking portion is rotated to a position relatively above the abutment portion, and the blocking portion blocks above the abutment portion to limit the separation of the center locking rod and the locking groove. In the unlocked state, the blocking portion is rotated to a position misaligned with the abutment portion. This patent controls the blocking portion to rotate to above the abutment portion or rotates to a position misaligned with the abutment portion by rotating the rotating lock member, thereby realizing the locking and unlocking of the center locking rod and the chassis body, and the locking structure is simpler. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0020] Figure 1 It is a partial schematic diagram of the folding tent when the central locking rod is separated from the chassis assembly;

[0021] Figure 2 Schematic diagram of the connection structure between the center locking rod and the top plate;

[0022] Figure 3 This is a disassembled diagram of the center lock rod and the top plate;

[0023] Figure 4 It is a schematic diagram of the separation of the connector and the chassis assembly;

[0024] Figure 5 is a schematic diagram of the three-dimensional structure of the chassis assembly;

[0025] Figure 6 It is a top view of the chassis assembly;

[0026] Figure 7 It is a partial schematic diagram of the folding tent when the center locking rod is connected to the chassis assembly;

[0027] Figure 8 It is a schematic diagram of the connection structure between the connector and the chassis assembly;

[0028] Fig. 9 It is a cross-sectional schematic diagram of the connection between the connector and the chassis assembly;

[0029] Fig.10 This is a schematic diagram of the disassembly of the lock plate, chassis body and hand turntable.

[0030] In the figure: 1, inner telescopic unit; 2, top skeleton rod; 3, support rod; 4, top plate; 5, center lock rod; 6, chassis assembly; 7, second connection seat; 8, first slot; 9, rod body; 10, plug-in column; 11, connector; 12, abutment protrusion; 13, positioning column; 14, chassis body; 15, hook; 16, rotation lock; 17, blocking protrusion; 18, lock groove; 19, guide slope 2; 20, guide slope 1; 21, gap; 2 2. Window; 23. First connecting seat; 24. Positioning hole; 25. Bell mouth; 26. Locking plate; 27. Center axis; 28. Center hole; 29. ​​Paddle; 30. Hand turntable; 31. Accommodating cavity; 32. Boss; 33. Second slot; 34. Annular convex edge; 35. Clip groove; 36. Second pin hole; 37. Inlet; 38. Accommodating groove; 39. Reset spring; 40. Limiting portion; 41. Mounting groove; 42. Mounting portion; 43. First pin hole. DETAILED DESCRIPTION

[0031] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art 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 similar 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] Figure 1-Figure 10 As shown, the folding tent includes supporting legs, an inner telescopic unit 1 and a central locking device. There are at least three supporting legs, each of which is connected to an inner telescopic unit 1. Multiple supporting legs and inner telescopic units 1 constitute a tent frame of the folding tent. A tarpaulin can be covered on the tent frame. The inner ends of multiple inner telescopic units 1 of the tent are connected by a central locking device. In this embodiment, the supporting legs are not shown in the drawings, and there are four inner telescopic units 1. The tent frame in this patent is the same as the folding tent in the art, and this embodiment will not be elaborated in detail. The only difference is the central locking device. The tent frame can refer to the content disclosed in patent CN215255091 U.

[0034] Figure 2 , Figure 4 , Figure 8 As shown, the central locking device includes a top plate 4, a chassis assembly 6, and a central locking rod 5 connecting the top plate 4 and the chassis assembly 6. The chassis assembly 6 is detachably connected to the lower end of the central locking rod 5. The chassis assembly 6 includes a chassis body 14 and a rotating lock 16 rotatably arranged on the chassis body 14.

[0035] Figure 1 , Figure 7 As shown, the inner telescopic unit 1 includes a support rod 3 and a top frame rod 2, one end of the top frame rod 2 is hinged to the top plate 4, one end of the support rod 3 is hinged to the chassis body 14, and the other end of the support rod 3 is hinged to the top frame rod 2.

[0036] A first connection seat 23 for hinged connection of the support rod 3 is provided on the chassis body 14 , and a second connection seat 7 for hinged connection of the top skeleton rod 2 is provided on the top plate 4 .

[0037] Figure 2-Figure 5 As shown, the rotary lock 16 is provided with a lock groove 18 for inserting the lower end of the center lock rod 5, and a blocking portion is fixedly provided in the lock groove 18. The center lock rod 5 is provided with an abutment portion that cooperates with the blocking portion. When in the locked state, the lower end of the center lock rod 5 is inserted into the lock groove 18, and the blocking portion is rotated to a position relatively above the abutment portion to limit the separation of the center lock rod 5 and the lock groove 18. When in the unlocked state, the blocking portion is rotated to a position misaligned with the abutment portion.

[0038] Figure 7As shown, when the tent frame is opened, the chassis assembly 6 is pushed upward toward the upper center lock rod 5 by external force, so that the lower end of the center lock rod 5 is inserted into the lock groove 18, and the rotary lock 16 is rotated to misalign the upper and lower opposing blocking portions and the abutting portions, and the chassis assembly 6 is continued to be pushed upward, so that the blocking portion in the lock groove 18 is completely higher than the abutting portion, and the rotary lock 16 is rotated in the opposite direction to rotate the blocking portion to the top of the abutting portion and opposite to the abutting portion, and the blocking portion blocks the abutting portion above to limit the lower end of the center lock rod 5 from upwardly disengaging from the lock groove 18, thereby completing the locking of the center lock rod 5 and the chassis assembly 6.

[0039] Figure 1 As shown, when the tent frame needs to be folded, the rotating lock 16 is rotated to rotate the blocking part to a position where the abutting part is offset. At this time, the blocking part will not block the abutting part to complete the unlocking, and the chassis assembly 6 is pulled down to move the chassis assembly 6 downward and separate from the lower end of the center lock rod 5.

[0040] This patent controls the blocking part to rotate to the top of the abutting part or to rotate to be misaligned with the abutting part by rotating the rotary lock 16, thereby realizing the locking and unlocking of the central locking rod 5 and the chassis body 14. The locking structure is simpler and easy to operate.

[0041] Figure 2 As shown, the upper end of the central locking rod 5 is fixedly connected to the top plate 4. Preferably, the central locking rod 5 includes a rod body 9 and a connector 11 fixedly connected to the lower end of the rod body 9, the upper end of the rod body 9 is fixedly connected to the top plate 4, the abutment portion is arranged on the circumferential side wall of the connector 11, and the connector 11 is inserted into the locking groove 18 to be connected to the bottom plate assembly 6 when the tent frame is opened.

[0042] Figure 3 As shown, preferably, the two ends of the rod body 9 and the top plate 4 and the connector 11 can be set to a detachable connection structure. For example, in this embodiment, the bottom of the top plate 4 is provided with a first slot 8, the rod body 9 is a hollow structure, the lower end of the rod body 9 has an opening, and the connector 11 is provided with a plug-in column 10. The upper end of the rod body 9 is inserted into the first slot 8 and fixed to the top plate 4, and the plug-in column 10 on the connector 11 is inserted into the lower end of the rod body 9 and fixedly connected to the rod body 9. The connection between the rod body 9 and the top plate 4 and the connector 11 can be tightly fixed, or fixed by fasteners, such as screws, after plugging.

[0043] Fig. 9 As shown, in addition, a positioning column 13 extending downward is provided at the bottom of the connecting head 11, and a positioning hole 24 for inserting the positioning column 13 for positioning is provided at the bottom of the locking groove 18. When the tent frame is opened and the connecting head 11 is inserted into the locking groove 18, the positioning column 13 is inserted into the positioning hole 24 to position the relative positions of the rotating lock 16 and the connecting head 11, and can also maintain the stability of the rotation of the rotating lock 16 relative to the connecting head 11.

[0044] Fig.10As shown, preferably, an elastic member providing a restoring force to the rotary lock member 16 is provided between the rotary lock member 16 and the chassis body 14, and the elastic member is used to drive the rotary lock member 16 to rotate and return to an initial position, in which the blocking portion and the abutting portion are opposite to each other up and down.

[0045] That is, when the rotary lock 16 is in the initial position, the blocking portion is in a position above or below and opposite to the abutting portion. For example, when the tent frame is opened, the connector 11 is inserted into the locking groove 18 and connected to the rotary lock 16, and the blocking portion is located at a position above and opposite to the abutting portion. The blocking portion is directly opposite to the corresponding abutting portion. When unlocking, the rotary lock 16 is rotated by hand to make the blocking portion turn away from the top of the corresponding abutting portion and be misaligned with the abutting portion to complete the unlocking. After the chassis assembly 6 is moved downward by an external force and separated from the connector 11, the rotary lock 16 is released, and the rotary lock 16 loses force, causing the elastic member to drive the rotary lock 16 to rotate in the opposite direction and reset to the initial position, so that the blocking portion is opposite to the corresponding abutting portion again; when the tent frame is folded, the connector 11 is separated from the locking groove 18, and the connector 11 is in When the chassis assembly 6 is connected, the blocking portion is pushed up by hand to insert the connecting head 11 into the locking groove 18, and the rotary lock 16 is rotated to make the blocking portion turn away from the bottom of the abutting portion and be misaligned with the abutting portion. The chassis assembly 6 is continued to be pushed up to make the blocking portion move up to be completely higher than the abutting portion, and the rotary lock 16 is released. The rotary lock 16 loses its force, causing the elastic member to drive the rotary lock 16 to rotate in the opposite direction and reset to the initial position, so that the blocking portion is opposite to the corresponding abutting portion again, and the blocking portion is above the abutting portion. The elastic member drives the rotary lock 16 to rotate to the initial position, so that the connecting head 11 can remain in the locked state when it is inserted into the locking groove 18 and connected with the rotary lock 16.

[0046] Fig. 9 , Fig.10 As shown, preferably, the rotary lock 16 includes a central shaft 27, a lock plate 26 located above the chassis body 14, and a hand-turned disk 30 located below the chassis body 14. The central shaft 27 passes through the center of the chassis body 14, and the two ends of the central shaft 27 are respectively fixedly connected to the lock plate 26 and the hand-turned disk 30, so that the hand-turned disk 30, the lock plate 26 and the central shaft 27 can rotate synchronously. The center of the chassis body 14 is provided with a central hole 28 for the central shaft 27 to pass through, and a hand-turned disk 30 is formed between the chassis body 14. A accommodating cavity 31 is formed, and the elastic member is a return spring 39 arranged in the accommodating cavity 31. A dial plate 29 is connected to the central shaft 27, and the dial plate 29 is driven to rotate by the central shaft 27. One end of the return spring 39 is supported on the chassis body 14, and the other end of the return spring 39 is supported on one side of the dial plate 29. A limiting portion 40 is provided on the chassis body 14 to block the other side of the dial plate 29. When the dial plate 29 abuts against the limiting portion 40, the rotating lock 16 rotates to the initial position where the blocking portion and the abutting portion are relative to each other up and down.

[0047] The hand dial 30 is used for hand rotation. When the user rotates the hand dial 30 in one direction, the hand dial 30, the central shaft 27 and the lock disk 26 rotate together, the central shaft 27 drives the dial plate 29 to rotate, and the dial plate 29 squeezes the return spring 39 to compress and accumulate force. When the hand dial 30 loses force, the return spring 39 releases its elastic force to act on the dial plate 29, pushing the dial plate 29, the central shaft 27, the hand dial 30 and the lock disk 26 to rotate in the opposite direction. Finally, the return spring 39 presses the dial plate 29 on the limit portion 40, so that the rotation lock 16 is in the initial position.

[0048] Preferably, the bottom of the chassis body 14 is provided with an annular flange 34 extending downward to form a receiving groove 38 at the bottom of the chassis body 14, and the hand turn plate 30 is provided with a sleeve groove opening upward, and the hand turn plate 30 is sleeved on the outer side of the annular flange 34 through the sleeve groove, so that the above-mentioned receiving cavity 31 is formed between the hand turn plate 30 and the chassis body 14.

[0049] Preferably, a clamping groove 35 is opened at the lower end of the central shaft 27, and the dial plate 29 is clamped in the clamping groove 35. The lower end of the central shaft 27 has an inlet 37 for the dial plate 29 to enter the clamping groove 35. A second slot 33 is provided on the inner bottom of the hand turntable 30. The lower end of the central shaft 27 is inserted into the second slot 33 and fixed by a pin shaft passing through the central shaft 27 and the hand turntable 30.

[0050] Specifically, a first pin hole 43 is provided on the hand turntable 30, and a second pin hole 36 is provided on the center shaft 27. The lower end of the center shaft 27 is inserted into the second slot 33, so that the first pin hole 43 and the second pin hole 36 are opposite to each other. The pin shaft passes through the first pin hole 43 and the second pin hole 36 to fix the lower end of the center shaft 27 to the hand turntable 30, and the center shaft 27 and the locking disk 26 are integrally formed.

[0051] Preferably, a boss 32 is provided on the inner bottom of the hand turntable 30, and a second slot 33 is provided on the top surface of the boss 32. When the central shaft 27 is inserted into the second slot 33, the boss 32 is limited below the dial plate 29 to limit the up and down movement of the dial plate 29.

[0052] Preferably, there are two return springs 39, and the two return springs 39 are arranged in the accommodating groove 38 along the inner edge of the annular flange 34. The bottom of the accommodating groove 38 is provided with a mounting portion 42 corresponding to the two return springs 39, and the mounting portion 42 is provided with a mounting groove 41 for one end of the return spring 39 to be inserted into, and one end of the return spring 39 is inserted into the mounting groove 41, and the dial plate 29 passes through the center line of the chassis body 14, the dial plate 29 is located in the annular flange 34 and the length of the dial plate 29 is equal to the inner diameter of the annular flange 34, limiting the movement of the dial plate 29 in the radial direction of the central axis 27, and the other ends of the two return springs 39 are supported on the two ends of the dial plate 29, and two limiting portions 40 corresponding to the two ends of the dial plate 29 are fixed to the bottom of the accommodating groove 38. The two limiting portions 40 respectively block the other side of the two ends of the dial plate 29 to limit the dial plate 29, so that the rotary lock 16 can only be rotated in one direction to unlock.

[0053] The two groups of return springs 39 make the force on the shift plate 29 more balanced when it is returned.

[0054] The locking groove 18 is disposed on the locking plate 26 , and the positioning hole 24 is formed in the upper end of the central axis 27 .

[0055] A bell mouth 25 is provided at the top of the chassis body 14 for inserting the lower part of the lock disk 26. The bell mouth 25 is larger at the top and smaller at the bottom, and the small end is connected to the upper end of the center hole 28. The lower part of the lock disk 26 is inserted into the bell mouth 25. The shape of the lower part of the lock disk 26 is adapted to the shape of the bell mouth 25, so that the rotation of the lock disk 26 is more stable.

[0056] Figure 4-Figure 6As shown, preferably, the blocking portion is a blocking protrusion 17 convexly arranged on the inner wall of the lock groove 18, and the abutting portion is a abutting protrusion 12 convexly arranged on the circumference of the connecting head 11. The blocking protrusion 17 or the abutting protrusion 12 is provided with a guiding inclined surface. When connection is required, the chassis assembly 6 is pushed up to insert the lower end of the central locking rod 5 into the lock groove 18. In this process, the blocking protrusion 17 on the inner wall of the lock groove 18 contacts the abutting protrusion 12 opposite to the upper side. The abutting protrusion 12 opposite to the upper side squeezes the blocking protrusion 17 along the guiding inclined surface to push the rotating lock 16 and the blocking portion to rotate in one direction relative to the chassis body 14. In the process of the chassis assembly 6 continuously moving upward, the abutting protrusion 12 continuously pushes the rotating lock 16 and the blocking portion. The chassis assembly 6 is rotated until the blocking portion and the abutting portion are completely misaligned, and the abutting portion no longer pushes the rotary lock 16 and the blocking portion to rotate. After the misalignment, the chassis assembly 6 continues to be pushed upward, so that the blocking portion moves from one side of the abutting portion to a position higher than the abutting portion. At this time, the reset spring 39 drives the rotary lock 16 to rotate and reset, so that the blocking portion rotates to a position relative to the abutting portion above, blocks the abutting portion, and completes the locking. By setting the guide slope, the user does not need to manually rotate the rotary lock 16 to complete the locking connection during the process of pushing the chassis assembly 6 upward. The rotary lock 16 can be driven to rotate by the relative blocking protrusion 17 and the abutting protrusion 12, making the installation more convenient and simple. The connection between the connector 11 and the lock slot 18 can also be achieved by the operator manually rotating the rotary lock 16.

[0057] Preferably, a guide bevel 20 is provided on the abutting protrusion 12, and a guide bevel 2 19 which is extruded and matched with the guide bevel 20 is provided on the blocking protrusion 17. When the chassis assembly 6 moves upward to insert the connecting head 11 into the locking groove 18, the guide bevel 2 19 on the blocking protrusion 17 contacts the guide bevel 20 on the abutting protrusion 12. The abutting protrusion 12 pushes the blocking protrusion 17 and the rotating lock 16 to rotate through the extrusion between the guide bevel 20 and the guide bevel 2 19. Both the abutting protrusion 12 and the blocking protrusion 17 are provided with guide bevels, so that the rotating lock 16 can be pushed to rotate more smoothly during contact and extrusion.

[0058] Preferably, a plurality of abutting protrusions 12 are evenly arranged on the circumferential side wall of the connector 11, and a plurality of blocking protrusions 17 are evenly arranged on the inner wall of the locking groove 18, and the plurality of abutting protrusions 12 correspond to the plurality of blocking protrusions 17 one by one, and a gap 21 is formed between two adjacent blocking protrusions 17 for the abutting protrusions 12 to pass through when they are misaligned. For example, in this embodiment, four abutting protrusions 12 are evenly arranged on the circumferential side wall of the connector 11, and four blocking protrusions 17 are evenly arranged on the inner wall of the locking groove 18, and the four abutting protrusions 12 and the four blocking protrusions 17 correspond to each other one by one.

[0059] When unlocking or connecting, the abutting protrusion 12 and the corresponding blocking protrusion 17 are in a dislocated state. At this time, the abutting protrusion 12 is opposite to the above-mentioned gap 21, so that the chassis assembly 6 can move up to connect or move down to separate relative to the central locking rod 5.

[0060] Preferably, a window 22 is provided on the side wall of the rotating lock 16 corresponding to the position below the blocking portion. When the lower end of the central locking rod 5 is connected to the chassis assembly 6, the abutting protrusion 12 located below the blocking protrusion 17 can be exposed from the window 22, allowing the user to observe more intuitively.

[0061] Preferably, the lower bottom surface of the blocking protrusion 17 for blocking is a plane, and the upper top surface of the abutting protrusion 12 that cooperates with the lower bottom surface of the blocking protrusion 17 is a plane.

[0062] A hook 15 is fixed to the bottom of the hand turntable 30 for hanging objects, such as a lamp.

[0063] With respect to the structure in which the rotary lock member 16 and the central lock rod 5 are kept in a locked state by the relative rotation of the rotary lock member 16 and the central lock rod 5 when the reset spring 39 is used to limit the connection, we have other solutions, such as:

[0064] In one solution, a card slot is provided on the abutting protrusion 12, and a limiting protrusion is provided on the inner wall of the locking slot 18. When the abutting protrusion 12 rotates relative to the rotating lock piece 16 to the bottom of the blocking protrusion 17 to form a lock, the limiting protrusion is elastically deformed between the two and is inserted into the card slot to lock the relative rotation of the center lock rod 5 and the rotating lock piece 16.

[0065] In another solution, when the abutting protrusion 12 rotates relative to the rotating lock member 16 to the bottom of the blocking protrusion 17 to form a lock, the connector 11 and the inner wall of the locking groove 18 are rotationally positioned by friction resistance to limit the relative rotation of the two.

[0066] The above is an introduction to the rotary center locking device for a folding tent and the folding tent provided by the utility model. This article uses specific examples to illustrate the principle and implementation of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A rotary central locking device for a folding tent, comprising a top plate, a bottom plate assembly, and a central locking rod connecting the top plate and the bottom plate assembly, characterized in that: The chassis assembly is detachably connected to the lower end of the central locking rod. The chassis assembly includes a chassis body and a rotary lock member rotatably arranged on the chassis body. The rotary lock member is provided with a lock groove for the lower end of the central locking rod to be inserted. A blocking portion is fixed in the lock groove. The central locking rod is provided with a supporting portion that matches the blocking portion. In the locked state, the lower end of the central locking rod is inserted into the locking groove, and the blocking portion is rotated to a position above the abutting portion to limit the separation of the central locking rod and the locking groove. In the unlocked state, the blocking portion rotates to a position offset from the abutting portion.

2. The rotary center locking device for a folding tent according to claim 1, characterized in that: An elastic member providing a restoring force to the rotary lock member is arranged between the rotary lock member and the chassis body, and the elastic member is used to drive the rotary lock member to rotate and return to an initial position.

3. The rotary center locking device for a folding tent according to claim 2, characterized in that: The blocking portion is a blocking protrusion protruding on the inner wall of the lock groove, and the abutting portion is an abutting protrusion protruding on the circumference of the central lock rod. The blocking protrusion or the abutting protrusion is provided with a guiding inclined surface. When the central lock rod moves relative to the chassis assembly and is inserted into the lock groove for connection, the abutting protrusion contacts the blocking protrusion and can push the rotating lock element and the blocking portion to rotate relative to the chassis body along the guiding inclined surface, so that the blocking portion and the abutting portion are misaligned.

4. The rotary center locking device for a folding tent according to claim 3, characterized in that: A plurality of abutting protrusions are evenly arranged on the circumference of the central locking rod, and a plurality of blocking protrusions are evenly arranged on the inner wall of the locking groove. The plurality of abutting protrusions correspond to the plurality of blocking protrusions one by one, and a gap is formed between two adjacent blocking protrusions for the abutting protrusions to pass through when they are misaligned.

5. The rotary center locking device for a folding tent according to claim 1, characterized in that: A window corresponding to the position below the blocking portion is provided on the side wall of the rotating lock.

6. The rotary center locking device for a folding tent according to claim 2, characterized in that: The rotary lock comprises a central axis, a lock plate located above the chassis body, and a hand-turned disk located below the chassis body, the central axis passes through the chassis body and two ends are respectively fixedly connected to the lock plate and the hand-turned disk, the lock groove is arranged on the lock plate, a receiving cavity is formed between the hand-turned disk and the chassis body, the elastic member is a reset spring arranged in the receiving cavity, a dial plate is connected to the central axis, the dial plate is driven to rotate by the central axis, one end of the reset spring is supported on the chassis body, and the other end of the reset spring is supported on one side of the dial plate, a limiting part blocking the other side of the dial plate is provided on the chassis body, and when the dial plate is against the limiting part, the rotary lock rotates to the initial position.

7. The rotary center locking device for a folding tent according to claim 6, characterized in that: A clamping groove is provided at the lower end of the central shaft, the paddle plate is clamped in the clamping groove, the end of the central shaft has an inlet for the paddle plate to enter the clamping groove, a slot is provided on the inner bottom of the hand-turning disk, the lower end of the central shaft is inserted into the slot, and is fixed by a pin shaft passing through the central shaft and the hand-turning disk.

8. The rotary center locking device for a folding tent according to claim 1, characterized in that: The upper end of the center locking rod is fixedly connected to the top plate. The center locking rod includes a rod body and a connecting head fixedly connected to the lower end of the rod body. The upper end of the rod body is fixedly connected to the top plate. The abutment portion is arranged on the circumferential side wall of the connecting head. A positioning column extending downward is provided at the bottom of the connecting head. A positioning hole is provided at the bottom of the locking groove for inserting the positioning column for positioning.

9. The rotary center locking device for a folding tent according to claim 1, characterized in that: The chassis body is provided with a first connection seat for hingedly connecting the support rod of the folding tent, and the top plate is provided with a second connection seat for hingedly connecting the top frame rod of the folding tent.

10. A folding tent, characterized in that: It comprises support legs, an inner telescopic unit and a rotary center locking device for a folding tent as described in any one of claims 1 to 9, wherein the inner telescopic unit comprises a support rod and a top frame rod, one end of the top frame rod is hinged to the top plate, one end of the support rod is hinged to the chassis body, and the other end of the support rod is hinged to the top frame rod.

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