A lock rod, a lock body, a lock assembly and a display screen

Abstract

The present invention discloses a locking rod, a lock body, a lock assembly and a display screen. The locking rod comprises a first positioning sleeve, a locking rod, a handle, a first support rod and a second support rod. The locking rod sliding sleeve is arranged in the first positioning sleeve. The first support rod is fixed on the first positioning sleeve and hinged to one end of the handle. The second support rod is hinged to the locking rod and the handle respectively. The first support rod, the handle and the second support rod form a lever structure. The locking rod utilizes the lever principle to make the force acting on the locking rod greater than the force applied by the user to the handle, so that the user can save more effort when pushing the locking rod. Even if the locking rod and the lock seat are slightly misaligned, the user can push the locking rod out relatively easily, making the user's operation more convenient and smoother, greatly improving the user's operating experience.

Description

Technical Field

[0001] The present invention relates to the technical field of locks, and in particular to a lock rod, a lock body, a lock assembly and a display screen. Background Art

[0002] When splicing existing LED display screens, a connection lock is required to connect multiple screens. In the existing connection lock structure that directly pushes the lock rod to achieve locking, when the user applies force to the lock rod of the lock body in a direction other than along the axial direction of the lock rod, the lock rod may not be pushed or may become stuck, requiring the user to use greater force to complete the locking of the connection lock, which is not very convenient for users to use. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a locking rod, a lock body having the locking rod, a lock assembly having the lock body, and a display screen having the lock assembly.

[0004] In order to solve the above technical problems, the first technical solution adopted by the present invention is: a locking rod member, including a first positioning sleeve, a locking rod, a handle, a first support rod and a second support rod, the locking rod sliding sleeve is arranged in the first positioning sleeve, the first support rod is fixed on the first positioning sleeve and is hinged to one end of the handle, and the second support rod is respectively hinged to the locking rod and the handle.

[0005] In order to solve the above technical problem, the second technical solution adopted by the present invention is: a lock body includes the above locking rod.

[0006] In order to solve the above technical problems, the third technical solution adopted by the present invention is: a lock assembly includes a matching lock body and a lock seat, and the lock body is the above lock body.

[0007] In order to solve the above technical problems, the fourth technical solution adopted by the present invention is: a display screen, including the above lock assembly.

[0008] The beneficial effects of the present invention are: the first support rod, the handle, and the second support rod form a lever structure. The lock rod member utilizes the lever principle to make the force acting on the lock rod greater than the force applied by the user to the handle, so that the user can save more effort when pushing the lock rod. Even if the lock rod and the lock seat are slightly misaligned, the user can push the lock rod out relatively easily, making the user's operation more convenient and smoother, and greatly improving the user's operating experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a structural principle diagram of a locking rod according to Embodiment 1 of the present invention;

[0010] Figure 2 An exploded view of the lock body of Embodiment 2 / Embodiment 3 of the present invention;

[0011] Figure 3 An exploded view of the lock body of Embodiment 2 / Embodiment 3 of the present invention;

[0012] Figure 4 It is a cross-sectional view of the lock body of Embodiment 2 / Embodiment 3 of the present invention;

[0013] Figure 5 It is a structural schematic diagram of the second positioning sleeve in the lock body of Embodiment 2 / Embodiment 3 of the present invention;

[0014] Figure 6 This is a schematic diagram of the structure of a lock assembly according to Embodiment 3 of the present invention;

[0015] Figure 7 This is a schematic diagram of the structure of a lock assembly according to Embodiment 3 of the present invention;

[0016] Figure 8 An exploded view of a lock seat in a lock assembly according to Embodiment 3 of the present invention;

[0017] Fig. 9 An exploded view of a lock seat in a lock assembly according to Embodiment 3 of the present invention;

[0018] Fig.10 It is a cross-sectional view of a lock seat in a lock assembly according to a third embodiment of the present invention.

[0019] Description of labels:

[0020] 1. The first positioning sleeve;

[0021] 2. Locking rod; 21. U-shaped guide groove;

[0022] 3. handle; 31. first limiting groove; 32. receiving cavity;

[0023] 4. The first support rod;

[0024] 5. The second support rod;

[0025] 61. guide block; 62. guide groove;

[0026] 7. second positioning sleeve; 71. fixing portion; 72. sleeve connection portion; 73. notch; 74. boss; 75. limiting column; 76. locking groove;

[0027] 8. Avoid the exit;

[0028] 9. first elastic member; 91. abutting portion;

[0029] 10. Teeth;

[0030] 11. Locking assembly;

[0031] 12. seat body; 121. third limiting groove; 122. mounting hole;

[0032] 13. a second elastic member;

[0033] 14, protruding member; 141, second limiting groove; 142, first guide surface; 143, second guide surface;

[0034] 15. Limit rod. DETAILED DESCRIPTION

[0035] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in conjunction with the implementation modes and the accompanying drawings.

[0036] Please refer to Figures 1 to 10 A locking rod member includes a first positioning sleeve 1, a locking rod 2, a handle 3, a first support rod 4 and a second support rod 5. The locking rod 2 is slidably sleeved in the first positioning sleeve 1, the first support rod 4 is fixed on the first positioning sleeve 1 and is hinged to one end of the handle 3, and the second support rod 5 is hinged to the locking rod 2 and the handle 3 respectively.

[0037] From the above description, it can be seen that the beneficial effects of the present invention are: the first support rod 4, the handle 3, and the second support rod 5 form a lever structure. The lock rod member utilizes the lever principle to make the force acting on the lock rod 2 greater than the force applied by the user to the handle 3, so that the user can save more effort when pushing the lock rod 2. Even if the lock rod 2 is slightly misaligned with the lock seat, the user can push the lock rod 2 out relatively easily, making the user's operation more convenient and smoother, and greatly improving the user's operating experience.

[0038] Furthermore, the distance from the hinge between the second support rod 5 and the lock rod 2 to the first support rod 4 is smaller than the distance from the hinge between the second support rod 5 and the handle 3 to the first support rod 4 .

[0039] From the above description, it can be seen that the locking rod works stably and smoothly without getting stuck.

[0040] Furthermore, the handle 3 is provided with a receiving cavity 32 for receiving the end of the locking rod 2 .

[0041] It can be seen from the above description that the receiving cavity 32 can protect the locking rod 2 and make the appearance of the locking rod more simple.

[0042] Furthermore, a first limiting groove 31 is provided on the handle 3 , and one end of the second support rod 5 is located in the first limiting groove 31 .

[0043] It can be seen from the above description that the first limiting groove 31 is used to limit the rotation angle and swing amplitude of the second support rod 5, which is beneficial to ensure the working stability of the locking rod.

[0044] Furthermore, the first support rod 4 and the first positioning sleeve 1 are formed in one piece, or the first support rod 4 and the first positioning sleeve 1 are detachably connected.

[0045] It can be seen from the above description that the first support rod 4 can be arranged in various ways, which is conducive to enhancing the diversity of the locking rod member.

[0046] Furthermore, the locking rod 2 is provided with a guide block 61 , and the first positioning sleeve 1 is provided with a guide groove 62 matching with the guide block 61 ; or, the locking rod 2 is provided with a guide groove 62 , and the first positioning sleeve 1 is provided with a guide block 61 matching with the guide groove 62 .

[0047] It can be seen from the above description that the cooperation between the guide block 61 and the guide groove 62 can make the locking rod 2 slide more smoothly in the first positioning sleeve 1 .

[0048] The lock body comprises the above-mentioned lock rod.

[0049] It can be seen from the above description that the lock body with the above locking rod is convenient for users to operate.

[0050] Furthermore, it also includes a second positioning sleeve 7, and the first positioning sleeve 1 is rotatably sleeved in the second positioning sleeve 7.

[0051] As can be seen from the above description, the second positioning sleeve 7 is used to connect with an external component. The locking rod 2 is rotatable relative to the second positioning sleeve 7 .

[0052] Furthermore, the second positioning sleeve 7 includes a fixing portion 71 and a sleeve portion 72 which are connected to each other. The sleeve portion 72 is provided with a notch 73 , and the first support rod 4 is located in the notch 73 .

[0053] It can be seen from the above description that the notch 73 can play a role in avoiding the first support rod 4 and at the same time, can also play a role in limiting the rotatable angle range of the first positioning sleeve 1.

[0054] Furthermore, a boss 74 is provided on the fixing portion 71 . The boss 74 is located in the notch 73 . The height of the boss 74 gradually increases from one end to the other end. One end of the first support rod 4 away from the handle 3 contacts the top surface of the boss 74 .

[0055] It can be seen from the above description that the setting of the boss 74 can play a pre-tightening role, so that the lock rod 2 can be more tightly connected to the lock seat when locking, thereby improving the stability of the connection between the lock body and the lock seat.

[0056] Furthermore, a first elastic member 9 is provided on the second positioning sleeve 7 , and a supporting portion 91 is provided at one end of the first elastic member 9 . A rack is provided on the outer peripheral wall of the first positioning sleeve 1 , and the supporting portion 91 is supported on the rack.

[0057] From the above description, it can be seen that when the first positioning sleeve 1 rotates, the abutment portion 91 will abut against the teeth 10 in the rack one by one, thereby making a sound, which serves as an operation prompt and helps the user estimate the rotation angle of the first positioning sleeve 1. It not only effectively improves the mechanical feel of the lock body, but also allows the user to more easily control the working condition of the lock body.

[0058] Furthermore, a mounting column for fixing the first elastic member 9 is provided on the second positioning sleeve 7 .

[0059] It can be seen from the above description that the first elastic member 9 is easy to install.

[0060] Furthermore, a U-shaped guide groove 21 is provided on the locking rod 2 , and a limiting column 75 matched with the U-shaped guide groove 21 is provided on the second positioning sleeve 7 .

[0061] As can be seen from the above description, the locking / unlocking action of the lock rod 2 is simple and easy for the user to operate. The cooperation between the U-shaped guide groove 21 and the limiting column 75 and the cooperation between the first positioning sleeve 1 and the boss 74 enable the lock body and the lock seat to achieve a completely locked effect when locked, effectively improving the stability of the connection between the lock body and the lock seat. It should be noted that if only the lock body and the lock seat need to be locked, regardless of whether they can be completely locked, the cooperation structure between the U-shaped guide groove 21 and the limiting column 75 and the cooperation structure between the first positioning sleeve 1 and the boss 74 can be selected.

[0062] Furthermore, at least two locking grooves 76 are provided on the second positioning sleeve 7 , and a locking assembly 11 matching with the locking grooves 76 is provided on the handle 3 .

[0063] It can be seen from the above description that the cooperation between the locking assembly 11 and the locking groove 76 can prevent the first positioning sleeve 1 / locking rod 2 from unexpectedly rotating relative to the second positioning sleeve 7, which is beneficial to ensure the working stability of the lock body.

[0064] Furthermore, the locking assembly 11 includes a reset elastic member and a locking member rotatably arranged on the handle 3, one end of the locking member has a button exposed on the handle 3, the other end of the locking member is provided with a locking rod cooperating with the locking groove 76, and the reset elastic member connects the locking member and the handle 3.

[0065] It can be seen from the above description that the locking assembly 11 has a simple structure, is easy to process, has a low manufacturing cost, and has good working stability.

[0066] The lock assembly comprises a matching lock body and a lock seat, wherein the lock body is the above-mentioned lock body.

[0067] It can be seen from the above description that the lock assembly has a simple structure, is easy to operate, and has good working stability.

[0068] Furthermore, the lock seat includes a seat body 12, a second elastic member 13 and a protruding member 14 slidably sleeved in the seat body 12, the second elastic member 13 connects the seat body 12 and the protruding member 14, and the protruding member 14 is provided with a lock hole matched with the lock rod 2.

[0069] From the above description, it can be seen that when there is a locking gap between the lock body and the lock seat, the locking rod 2 will pull the protruding piece 14, so that the protruding piece 14 extends into the entry and exit hole for the locking rod 2 to enter and exit on the adjacent side frame where the lock body is installed, and matches with the entry and exit hole. In this way, the two adjacent frames can be accurately aligned when spliced ​​and locked, achieving one-time locking, avoiding misalignment between the frames when locking, and helping to improve the accuracy of locking.

[0070] Furthermore, a limiting rod 15 is provided on the seat body 12 , and a second limiting groove 141 is provided on the protruding member 14 along its sliding direction, and one end of the limiting rod 15 is located in the second limiting groove 141 .

[0071] It can be seen from the above description that the cooperation between the limiting rod 15 and the second limiting groove 141 can limit the maximum sliding stroke of the protruding member 14, which is beneficial to improving the structural stability and working stability of the lock seat.

[0072] Furthermore, a first guide surface 142 for guiding the lock rod 2 is provided on the inner side of one end of the protruding piece 14 close to the lock body.

[0073] It can be seen from the above description that the provision of the first guide surface 142 enables the locking rod 2 to extend into the protruding member 14 more smoothly.

[0074] Furthermore, a second guide surface 143 is provided on the outer edge of one end of the protruding piece 14 close to the lock body.

[0075] As can be seen from the above description, the second guide surface 143 is provided to facilitate a portion of the extension member 14 to extend into the access hole for the lock rod 2 to enter and exit the adjacent side frame where the lock body is installed.

[0076] A display screen including the above-mentioned lock assembly.

[0077] It can be seen from the above description that the display screen is easy to assemble and has good structural stability.

[0078] Embodiment 1

[0079] Please refer to Figure 1 Embodiment 1 of the present invention is: a locking rod member that can be used in a lock assembly, comprising a first positioning sleeve 1, a locking rod 2, a handle 3, a first support rod 4 and a second support rod 5. The locking rod 2 is slidably sleeved in the first positioning sleeve 1, the first support rod 4 is fixed on the first positioning sleeve 1 and is hinged to one end of the handle 3, the second support rod 5 is hinged to the locking rod 2 and the handle 3 respectively, and a locking head is provided at one end of the locking rod 2 away from the second support rod 5.

[0080] The movement of the lock rod in the prior art is a linear movement along its axial direction, and the direction of force applied is the same as the direction of its movement. There is a problem that it cannot be pushed or gets stuck if the force is not enough. The lock rod of this embodiment is essentially a lever structure, and the handle 3 is set to flip around the first support rod 4, and its own length is the length of the first power arm. The second support rod 5 is connected to the position of the handle 3 close to the first support rod 4. The length from the connection between the second support rod 5 and the handle 3 to the connection between the handle 3 and the first support rod 4 is the length of the second power arm. The length of the first power arm is greater than the length of the second power arm. The user can apply a relatively small force on the handle 3 to form a large force on the second support rod 5 and then push the lock rod 2. Therefore, compared with the prior art, the above-mentioned lock rod can make the lock rod 2 more labor-saving when being pushed.

[0081] The distance from the hinge of the second support rod 5 and the lock rod 2 to the first support rod 4 is smaller than the distance from the hinge of the second support rod 5 and the handle 3 to the first support rod 4 .

[0082] Preferably, the handle 3 is provided with a receiving cavity for receiving the end of the locking rod 2 .

[0083] The handle 3 is provided with a first limiting groove, and one end of the second support rod 5 is located in the first limiting groove, so that the maximum rotation range of the second support rod 5 can be limited, thereby ensuring the working stability of the locking rod.

[0084] The first support rod 4 and the first positioning sleeve 1 are formed in one piece, or the first support rod 4 and the first positioning sleeve 1 are detachably connected.

[0085] The locking rod 2 is provided with a guide block, and the first positioning sleeve 1 is provided with a guide groove matched with the guide block; or, the locking rod 2 is provided with a guide groove, and the first positioning sleeve 1 is provided with a guide block matched with the guide groove.

[0086] Embodiment 2

[0087] Please refer to Figures 1 to 5 , the second embodiment of the present invention is: please combine Figures 1 to 3A lock body of a lock assembly comprises a first positioning sleeve 1, a locking rod 2, a handle 3, a first support rod 4, a second support rod 5 and a second positioning sleeve 7. The first positioning sleeve 1 is rotatably sleeved in the second positioning sleeve 7, the locking rod 2 is slidably sleeved in the first positioning sleeve 1, the first support rod 4 is fixed on the first positioning sleeve 1 and is hinged to one end of the handle 3, the second support rod 5 is hinged to the locking rod 2 and the handle 3 respectively, and a lock head is provided at one end of the locking rod 2 away from the second support rod 5. The handle 3 is rotated around the first support rod 4, and at the same time, since the second support rod 5 connects the handle 3 and the locking rod 2 together, the rotation of the handle 3 will pull the locking rod 2, so that the locking rod 2 moves along the axial direction of the first positioning sleeve 1. At the same time, since the first support rod 4 and the first positioning sleeve 1 are fixed together, when the handle 3 is rotated to make the handle 3 rotate circumferentially around the locking rod 2, the handle 3, the first positioning sleeve 1 and the locking rod 2 are all rotated at the same time, and the first positioning sleeve 1 is also rotated in the second positioning sleeve 7.

[0088] Specifically, the distance from the hinge point between the second support rod 5 and the lock rod 2 to the first support rod 4 is smaller than the distance from the hinge point between the second support rod 5 and the handle 3 to the first support rod 4 .

[0089] Please combine Figure 3 and Figure 4 A first limiting groove 31 is provided on the handle 3, and one end of the second support rod 5 is located in the first limiting groove 31, so that the maximum rotation range of the second support rod 5 can be limited.

[0090] The first support rod 4 is integrally formed with the first positioning sleeve 1, but in this embodiment, the first support rod 4 is detachably connected to the first positioning sleeve 1, so that the processing and later maintenance of the lock body parts can be convenient. The first support rod 4 is fixedly arranged on the first positioning sleeve 1, and the height of the hinge point on the first positioning sleeve 1 can be increased.

[0091] like Figure 3 As shown, the locking rod 2 is provided with a guide block 61, and the first positioning sleeve 1 is provided with a guide groove 62 matched with the guide block 61; in other embodiments, the guide groove 62 can also be provided on the locking rod 2, and the guide block 61 matched with the guide groove 62 can be provided on the first positioning sleeve 1. It is easy to understand that the guide groove 62 is provided along the axial direction of the locking rod 2.

[0092] Please combine Figure 2 , Figure 3 and Figure 5In order to completely lock the lock rod 2 of the lock body with the lock hole in the lock seat of the lock assembly, the second positioning sleeve 7 includes a connected fixing portion 71 and a sleeve portion 72. The sleeve portion 72 is provided with a notch 73. The first support rod 4 is located in the notch 73. The fixing portion 71 is provided with a boss 74. The boss 74 is located in the notch 73. The height of the boss 74 gradually increases from one end to the other end. The end of the first support rod 4 away from the handle 3 abuts against the top surface of the boss 74 and can be slidably arranged along the top surface of the boss 74. The lock rod 2 is provided with a U-shaped guide groove 21, and the second positioning sleeve 7 is provided with a limiting column 75 matched with the U-shaped guide groove 21. The U-shaped guide groove 21 includes a sliding guide groove and two rotation guide grooves. The sliding guide groove is arranged along the axial direction of the lock rod 2, and the rotation guide groove is respectively connected to the two ends of the sliding guide groove. In detail, the first positioning sleeve 1 is provided with an escape opening 8 at a position corresponding to the U-shaped guide groove 21, and one end of the limiting column 75 passes through the escape opening 8 and is inserted into the U-shaped guide groove 21. In more detail, the opening angle of the escape opening 8 is greater than or equal to 90 degrees, that is, the length of the escape opening 8 is greater than or equal to the length of the rotation guide groove, so that the rotation of the first positioning sleeve 1 and the locking rod 2 will not be affected.

[0093] like Figure 3 As shown, the second positioning sleeve 7 is provided with a first elastic member 9, one end of the first elastic member 9 is provided with a supporting portion 91, a rack is provided on the outer peripheral wall of the first positioning sleeve 1, the supporting portion 91 is supported on the rack, and the rack includes a plurality of teeth 10. Optionally, the first elastic member 9 is a torsion spring, and the second positioning sleeve 7 is provided with a mounting column for fixing the first elastic member 9. The torsion spring is sleeved on the mounting column, one end of the torsion spring is fixed on the mounting column or the second positioning sleeve 7, and the other end of the torsion spring is bent toward the direction close to the first positioning sleeve 1 to form the supporting portion 91. However, in this embodiment, the first elastic member 9 is a spring sheet, one end or the middle area of ​​the spring sheet is bent to have a folded angle that abuts against the rack, and the folded angle is the supporting portion 91, and the mounting column is a mounting screw that passes through the spring sheet.

[0094] Please combine Figure 2 and Figure 3 In order to prevent the first positioning sleeve 1 / locking rod 2 from accidentally rotating relative to the second positioning sleeve 7, at least two locking grooves 76 are provided on the second positioning sleeve 7, and the handle 3 is provided with a locking assembly 11 that matches the locking grooves 76. In this embodiment, since the locking rod 2 is locked / unlocked by rotating 90°, the two locking grooves 76 provided on the second positioning sleeve 7 of this embodiment are spaced 90° apart.

[0095] Specifically, the locking assembly 11 includes a reset elastic member and a locking member rotatably arranged on the handle 3. One end of the locking member has a button exposed on the handle 3, and the other end of the locking member is provided with a locking rod that cooperates with the locking groove 76. The reset elastic member connects the locking member and the handle 3. In this embodiment, the reset elastic member is a torsion spring.

[0096] like Figure 4 As shown, the handle 3 is provided with a receiving cavity 32 for receiving the end of the locking rod 2 .

[0097] Embodiment 3

[0098] Please refer to Figures 1 to 10 , Embodiment 3 of the present invention is: a display screen includes a plurality of frames, and two adjacent frames are connected and fixed by a locking assembly, such as Figure 6 and Figure 7 As shown, the lock assembly includes a matching lock body and a lock seat, the lock body is installed on one side of the frame, and the lock seat is installed on the other side of the frame to match the lock body on the adjacent side frame.

[0099] Please combine Figures 1 to 3 The lock body comprises a first positioning sleeve 1, a locking rod 2, a handle 3, a first support rod 4, a second support rod 5 and a second positioning sleeve 7. The first positioning sleeve 1 is rotatably sleeved in the second positioning sleeve 7, the locking rod 2 is slidably sleeved in the first positioning sleeve 1, the first support rod 4 is fixed on the first positioning sleeve 1 and is hinged to one end of the handle 3, the second support rod 5 is hinged to the locking rod 2 and the handle 3 respectively, and a lock head is provided at one end of the locking rod 2 away from the second support rod 5. It is easy to understand that an entry and exit hole (not shown) for the locking rod 2 to enter and exit is provided on the side of the frame for mounting the lock body.

[0100] Specifically, the distance from the hinge point between the second support rod 5 and the lock rod 2 to the first support rod 4 is smaller than the distance from the hinge point between the second support rod 5 and the handle 3 to the first support rod 4 .

[0101] Please combine Figure 3 and Figure 4 A first limiting groove 31 is provided on the handle 3, and one end of the second support rod 5 is located in the first limiting groove 31, so that the maximum rotation range of the second support rod 5 can be limited.

[0102] The first support rod 4 is integrally formed with the first positioning sleeve 1, but in this embodiment, the first support rod 4 is detachably connected to the first positioning sleeve 1, so that the processing and later maintenance of the lock body parts can be convenient. The first support rod 4 is fixedly arranged on the first positioning sleeve 1, and the height of the hinge point on the first positioning sleeve 1 can be increased.

[0103] like Figure 3 As shown, the locking rod 2 is provided with a guide block 61, and the first positioning sleeve 1 is provided with a guide groove 62 matched with the guide block 61; in other embodiments, the guide groove 62 can also be provided on the locking rod 2, and the guide block 61 matched with the guide groove 62 can be provided on the first positioning sleeve 1. It is easy to understand that the guide groove 62 is provided along the axial direction of the locking rod 2.

[0104] Please combine Figure 2 , Figure 3 and Figure 5 In order to completely lock the lock rod 2 of the lock body with the lock hole in the lock seat of the lock assembly, the second positioning sleeve 7 includes a connected fixing portion 71 and a sleeve portion 72. The sleeve portion 72 is provided with a notch 73. The first support rod 4 is located in the notch 73. The fixing portion 71 is provided with a boss 74. The boss 74 is located in the notch 73. The height of the boss 74 gradually increases from one end to the other end. The end of the first support rod 4 away from the handle 3 abuts against the top surface of the boss 74 and can be slidably arranged along the top surface of the boss 74. The lock rod 2 is provided with a U-shaped guide groove 21, and the second positioning sleeve 7 is provided with a limit column 75 matched with the U-shaped guide groove 21. The U-shaped guide groove 21 includes a sliding guide groove and two rotation guide grooves. The sliding guide groove is arranged along the axial direction of the lock rod 2, and the rotation guide groove is respectively connected to the two ends of the sliding guide groove. When the lock rod 2 rotates, there is an axial movement increment, so that after the lock head is engaged with the lock hole, the lock rod 2 and the lock seat are completely locked. In detail, the first positioning sleeve 1 is provided with an escape opening 8 at a position corresponding to the U-shaped guide groove 21, and one end of the limiting column 75 passes through the escape opening 8 and is inserted into the U-shaped guide groove 21. In more detail, the opening angle of the escape opening 8 is greater than or equal to 90 degrees, that is, the length of the escape opening 8 is greater than or equal to the length of the rotation guide groove, so that the rotation of the lock body is not affected.

[0105] When the locking rod rotates, the first support rod 4 contacts the boss 74, causing the locking rod to produce a retracted displacement when locking. When the lock head is buckled on the lock hole in the protruding piece 14, this retracted displacement will cause the locking rod to pull the protruding piece 14, so that the protruding end of the protruding piece 14 extends toward the locking rod side and enters the hole for the locking rod to enter and exit (the hole is on the side of the frame for installing the lock body). By aligning the protruding piece 14, accurate splicing of the frame can be achieved to reduce misalignment.

[0106] like Figure 3 As shown, the second positioning sleeve 7 is provided with a first elastic member 9, one end of the first elastic member 9 is provided with a supporting portion 91, a rack is provided on the outer peripheral wall of the first positioning sleeve 1, the supporting portion 91 is supported on the rack, and the rack includes a plurality of teeth 10. Optionally, the first elastic member 9 is a torsion spring, and the second positioning sleeve 7 is provided with a mounting column for fixing the first elastic member 9. The torsion spring is sleeved on the mounting column, one end of the torsion spring is fixed on the mounting column or the second positioning sleeve 7, and the other end of the torsion spring is bent toward the direction close to the first positioning sleeve 1 to form the supporting portion 91. However, in this embodiment, the first elastic member 9 is a spring sheet, one end or the middle area of ​​the spring sheet is bent to have a folded angle that abuts against the rack, and the folded angle is the supporting portion 91, and the mounting column is a mounting screw that passes through the spring sheet.

[0107] Please combine Figure 2 and Figure 3In order to prevent the first positioning sleeve 1 / locking rod 2 from accidentally rotating relative to the second positioning sleeve 7, at least two locking grooves 76 are provided on the second positioning sleeve 7, and the handle 3 is provided with a locking assembly 11 that matches the locking grooves 76. In this embodiment, since the locking rod 2 is locked / unlocked by rotating 90°, the two locking grooves 76 provided on the second positioning sleeve 7 of this embodiment are spaced 90° apart.

[0108] Specifically, the locking assembly 11 includes a reset elastic member and a locking member rotatably arranged on the handle 3. One end of the locking member has a button exposed on the handle 3, and the other end of the locking member is provided with a locking rod that cooperates with the locking groove 76. The reset elastic member connects the locking member and the handle 3. In this embodiment, the reset elastic member is a torsion spring.

[0109] like Figure 4 As shown, the handle 3 is provided with a receiving cavity 32 for receiving the end of the locking rod 2 , that is, the hinge between the locking rod 2 and the second support rod 5 and at least a part of the second support rod 5 can be received in the receiving cavity 32 .

[0110] Please combine Figures 8 to 10 The lock seat includes a seat body 12, a second elastic member 13 and a protruding member 14 slidably sleeved in the seat body 12, the second elastic member 13 connects the seat body 12 and the protruding member 14, and the protruding member 14 is provided with a lock hole matched with the lock head of the lock rod 2. In detail, the seat body 12 is provided with a through hole for accommodating the protruding member 14, and at least a part of the protruding member 14 is slidably arranged in the through hole. The second elastic member 13 can be a spring.

[0111] In order to make the extension piece 14 slide more smoothly and prevent the extension piece 14 from detaching from the base body 12, a limiting rod 15 is provided on the base body 12, and the extension piece 14 has a second limiting groove 141 arranged along its sliding direction. One end of the limiting rod 15 is located in the second limiting groove 141.

[0112] like Fig.10 As shown, a first guide surface 142 for guiding the lock rod 2 is provided on the inner side of one end of the protruding piece 14 close to the lock body.

[0113] The outer edge of the end of the extension piece 14 close to the lock body is provided with a second guide surface 143, so that the extension piece 14 can be easily aligned with the entry and exit hole, thereby achieving accurate alignment and quick connection between the lock body and the lock seat. In this embodiment, the end of the extension end is provided with an inclined surface converging toward its center, and when the extension end is extended into the entry and exit hole of the adjacent frame for the lock rod 2 to enter and exit, the inclined surface (i.e., the second guide surface 143) can better guide the extension end to accurately enter the entry and exit hole.

[0114] Please combine Fig. 9 and Fig.10In this embodiment, the protruding member 14 includes a connected protruding end and a limiting end, a first guide surface 142 and a second guide surface 143 are respectively arranged on the protruding end, and the protruding end can be extended relative to the end surface of the seat body 12, and the cooperation between the limiting rod 15 and the second limiting groove 141 can limit the extension length of the protruding end. In order to prevent the protruding member 14 from rotating relative to the seat body 12, a limiting notch is provided on the limiting end, and a third limiting groove 121 matching the contour of the limiting end is provided at one end of the through hole, and the third limiting groove 121 is connected to the through hole. Since the third limiting groove 121 is non-circular, the inner side of the third limiting groove 121 has a limiting structure matching the limiting notch. In this embodiment, the limiting structure is a limiting block.

[0115] like Fig. 9 As shown, the seat body 12 is screwed, welded or snap-connected to the frame. In this embodiment, a mounting hole 122 for mounting a hand screw is provided on the seat body 12, so that the seat body 12 and the frame can be easily assembled and disassembled.

[0116] To sum up, the lock rod, lock body, lock assembly and display screen provided by the present invention utilize the principle of lever, which can allow users to splice the display screen frame more labor-savingly; the provision of the lock seat extension can realize automatic alignment of the lock seat and the lock body, making splicing more convenient and operation smoother, thereby greatly improving the user's operating experience; the cooperation of the U-shaped guide groove and the limit column, as well as the cooperation of the first positioning sleeve and the boss, enable the lock body and the lock seat to achieve a completely locked effect when locked, effectively improving the stability of the connection between the lock body and the lock seat; the structure has good stability and good operating feel.

[0117] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. Lock body, characterized in that: The lock rod comprises a locking rod member, wherein the locking rod member comprises a first positioning sleeve, a locking rod, a handle, a first support rod and a second support rod, the locking rod sliding sleeve is arranged in the first positioning sleeve, the first support rod is fixed on the first positioning sleeve and is hinged to one end of the handle, the second support rod is hinged to the locking rod and the handle respectively, a receiving cavity for accommodating the end of the locking rod is provided on the handle, a first limiting groove is provided on the handle, one end of the second support rod is located in the first limiting groove, the first support rod and the first positioning sleeve are integrally formed, or the first support rod and the first positioning sleeve are detachably connected; It also includes a second positioning sleeve, in which the first positioning sleeve is rotatably sleeved; The second positioning sleeve includes a fixed portion and a sleeve portion connected to each other, the sleeve portion is provided with a notch, and the first support rod is located in the notch; A boss is provided on the fixing portion, the boss is located in the notch, the height of the boss gradually increases from one end to the other end, and the end of the first support rod away from the handle contacts the top surface of the boss; The locking rod is provided with a U-shaped guide groove, and the second positioning sleeve is provided with a limiting column matched with the U-shaped guide groove.

2. The lock body according to claim 1, characterized in that: The second positioning sleeve is provided with a first elastic member, one end of the first elastic member is provided with a supporting portion, a rack is provided on the outer peripheral wall of the first positioning sleeve, and the supporting portion is supported on the rack.

3. The lock body according to claim 1, characterized in that: The second positioning sleeve is provided with a mounting column for fixing the first elastic member.

4. The lock body according to claim 1, characterized in that: The second positioning sleeve is provided with at least two locking grooves, and the handle is provided with a locking assembly matched with the locking grooves.

5. The lock body according to claim 4, characterized in that: The locking assembly includes a reset elastic member and a locking member rotatably arranged on the handle, one end of the locking member has a button exposed on the handle, the other end of the locking member is provided with a locking rod matched with the locking groove, and the reset elastic member connects the locking member and the handle.

6. The lock body according to claim 1, characterized in that: The distance from the hinge point between the second support rod and the lock rod to the first support rod is smaller than the distance from the hinge point between the second support rod and the handle to the first support rod.

7. The lock body according to claim 1, characterized in that: The locking rod is provided with a guide block, and the first positioning sleeve is provided with a guide groove matched with the guide block; or, the locking rod is provided with a guide groove, and the first positioning sleeve is provided with a guide block matched with the guide groove.

8. A lock assembly, comprising a lock body and a lock seat that match each other, wherein the lock body is the lock body described in any one of claims 1 to 7.

9. The lock assembly according to claim 8, characterized in that: The lock seat comprises a seat body, a second elastic member and a protruding member slidably sleeved in the seat body, the second elastic member connects the seat body and the protruding member, and a locking hole matched with the locking rod is arranged on the protruding member.

10. The lock assembly according to claim 9, characterized in that: A limiting rod is arranged on the seat body, a second limiting groove is arranged along the sliding direction of the extending piece, and one end of the limiting rod is located in the second limiting groove.

11. The lock assembly according to claim 9, characterized in that: A first guide surface for guiding the lock rod is provided on the inner side of one end of the protruding piece close to the lock body.

12. The lock assembly according to claim 9, characterized in that: A second guide surface is provided on the outer edge of one end of the protruding piece close to the lock body.

13. A display screen, characterized in that: A lock assembly comprising any one of claims 8 to 12.

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