An LED display screen

Abstract

An LED display screen includes a cabinet frame assembly, an LED display module disposed on the front of the cabinet frame assembly, and a power control box disposed on the back of the cabinet frame assembly. The cabinet frame assembly includes a frame body, upper locking members and lower locking seats disposed on the upper and lower sides of the frame body, and left locking members and right locking seats disposed on the left and right sides of the frame body. The upper locking members and lower locking seats are used to connect two adjacent LED displays in the vertical direction. The left locking members and right locking seats are configured to connect two adjacent LED displays in the horizontal direction at multiple predetermined angles. The right locking seat is a nut-shaped structure with a through hole. The nut-shaped structure is detachably installed on the frame body by a fastening component passing through the through hole. This LED display screen has the characteristics of combining a climbing frame and a handle frame, supporting angle connection, and being convenient, stable, and reliable in operation.

Description

Technical Field

[0001] This utility model relates to the field of display screen technology, and specifically to an LED display screen. Background Technology

[0002] With the development of the times, LED displays are widely used in government squares, National Day celebrations, leisure squares, large entertainment squares, bustling commercial centers, advertising information boards, commercial streets, railway stations, waiting rooms, performing arts centers, live television broadcasts, exhibition halls, concert venues and other places.

[0003] The climbing frame on an LED display screen provides stable support for workers, facilitating high-altitude maintenance. The handles allow for quick adjustment of the screen's position. Currently, the climbing frame and handles on LED displays are typically located at different positions on the cabinet frame, resulting in large size and space consumption. Furthermore, the left and right locks and top and bottom locks of common LED displays are mostly fixed with bolts, which generally leads to cumbersome operation, low work efficiency, and inconvenience. Therefore, there is an urgent need for an LED display screen solution to these problems. Utility Model Content

[0004] In view of this, an LED display screen that combines a climbing frame and a handle frame, supports angle connection, and is easy to operate and stable and reliable is provided.

[0005] An LED display screen includes a cabinet frame assembly, an LED display module disposed on the front of the cabinet frame assembly, and a power control box disposed on the back of the cabinet frame assembly. The cabinet frame assembly includes a frame body, an upper locking member and a lower locking seat disposed on the upper and lower sides of the frame body, and a left locking member and a right locking seat disposed on the left and right sides of the frame body. The upper locking member and the lower locking seat are used to connect two adjacent LED displays in the vertical direction. The left locking member and the right locking seat are configured to connect two adjacent LED displays in the horizontal direction at multiple predetermined angles. The right locking seat is a nut-shaped structure with a through hole. The nut-shaped structure is detachably installed on the frame body by a fastening component passing through the through hole.

[0006] Furthermore, the box frame assembly also includes a climbing handle frame, which is detachably mounted on the frame body. The climbing handle frame includes a connecting part, a pedal part, and a handle part formed by bending downward from the pedal part. The connecting part is detachably connected to the frame body. The handle part extends into an auxiliary fixing part towards the frame body. The auxiliary fixing part is used to enhance the stability of the climbing handle frame. The auxiliary fixing part is also detachably connected to the frame body. The connecting part is located at both ends of the pedal part, and the auxiliary fixing part is located below the pedal part. The connecting part and the auxiliary fixing part form a triangular structure.

[0007] Furthermore, the connecting part, pedal part, handle part, and auxiliary fixing part are connected or formed into one piece.

[0008] Furthermore, the pedal portion is provided with anti-slip texture to increase friction, and the handle portion is provided with an arc surface for easy gripping and use.

[0009] Furthermore, the lower locking seat is provided with a buckle, a fixed seat, a pressure block, a first elastic element, and a second elastic element. The buckle is connected to the fixed seat through the first elastic element, and the pressure block is connected to the fixed seat through the second elastic element. The upper locking member is provided with a locking rod, a handle, and a locking sleeve. The handle is threadedly connected to the locking sleeve, and the locking rod is fixed to the handle. When locked, the buckle radially engages the locking rod, and the pressure block axially presses the locking rod.

[0010] Furthermore, the fixing seat is provided with a protrusion, the pressure block is placed inside the protrusion, and the two ends of the pressure block are respectively provided with a first recess and a second recess. One end of the second elastic member acts on the convex bottom wall of the protrusion, and the other end acts on the concave bottom wall of the first recess. The locking rod is provided with a locking head, which is inserted into the second recess and presses against the concave bottom wall of the second recess.

[0011] Furthermore, the latch has a lock hole in the middle, and the locking rod is provided with a locking shaft, a stepped shaft section and a lock head in sequence along the direction towards the lock hole; in the natural state, the outer wall of the pressure block abuts against the wall of the lock hole to make the pressure block radially engage with the latch; when locked, the lock hole catches the stepped shaft section to make the latch radially engage with the locking rod.

[0012] Furthermore, the nut-shaped structure is provided with a lock cylinder assembly and a screw base. The lock cylinder assembly includes a lock knob, a lock pull rod, a third elastic element, and a flange lock cylinder. The screw base and the flange lock cylinder are respectively snapped onto both sides of the frame body. The lock knob is fixed to the lock pull rod. The flange lock cylinder is sleeved on the lock pull rod and connected to the lock pull rod through the third elastic element. The flange lock cylinder and the lock pull rod are clearance-fitted so that the flange lock cylinder can rotate around the lock pull rod to switch the angle surface and engage with the corresponding left lock piece. The lock pull rod is threadedly connected to the screw base to lock the lock cylinder assembly.

[0013] Furthermore, the locking rod has a shoulder and a front part, the flange lock core has a through hole and an inner surface of the flange, the front part of the rod is clearance-fitted with the through hole, the third elastic element is sleeved on the locking rod and acts between the inner surface of the flange and the shoulder; the locking knob is fixed to the locking rod by a pin, the locking rod also has a rear part, the rear part of the rod is an externally threaded rod, and the externally threaded rod is threadedly connected to the internally threaded hole of the screw base.

[0014] Furthermore, the surface of the flange lock core away from the screw base is the flange main surface. The flange lock core has multiple flange side surfaces circumferentially arranged on its side. Each flange side surface forms an angle with the flange main surface at a different angle. Each flange side surface can be connected to a corresponding left locking member to splice two frame bodies with a selected angle relationship. A lock seat hole is opened in the middle of each flange side surface. The left locking member includes a locking member, which can be aligned and locked with the lock seat hole.

[0015] Compared with the prior art, the present invention has at least the following beneficial effects:

[0016] First, this LED display screen combines a climbing frame and a handle frame to form a climbing handle frame, and the connecting part and the auxiliary fixing part form a stable triangular structure. Not only is the volume reduced and the structure simplified after the climbing frame and handle frame are integrated, but the stability of the climbing handle frame is also enhanced.

[0017] Secondly, the upper and lower locking components of this LED display screen, when locked, have the lock head embedded in the second recess of the pressure block, and the pressure block installed in the protrusion of the fixed seat, so that the lock head is not exposed outside the fixed seat, avoiding the risk of accidental bumping of the lock head. Moreover, under the action of the first elastic element, the stepped shaft section is radially engaged with the lock hole of the latch, and under the action of the second elastic element, the pressure block pushes the lock head axially, so that the lock head and the latch are tightly fitted, thereby achieving double locking of the locking rod in both radial and axial directions, making the locking rod less prone to loosening and more stable and reliable.

[0018] Third, the left and right locking components of this LED display screen are connected to the screw base by a locking lever to simplify operation. Specifically, the nut-shaped structure of the right locking seat can be tightened to the frame body by rotating the locking knob through the threaded connection, and the flange locking core can be released by rotating the locking knob in the opposite direction. The structure is simple and the operation is convenient. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of an LED display screen according to an embodiment of the present utility model.

[0020] Figure 2 This is a three-dimensional structural diagram of a climbing handle frame for an LED display screen according to an embodiment of the present invention.

[0021] Figure 3 This is a schematic diagram of the assembly of the upper locking component and the lower locking base of an LED display screen according to an embodiment of the present utility model.

[0022] Figure 4 This is an exploded view of the upper locking component and lower locking base of an LED display screen according to an embodiment of the present invention.

[0023] Figure 5 This is an exploded view of the upper locking component and lower locking base of an LED display screen according to an embodiment of the present invention, from another direction.

[0024] Figure 6 This is a cross-sectional schematic diagram of the upper locking member and lower locking seat of an LED display screen in an unlocked state according to an embodiment of the present utility model.

[0025] Figure 7 This is a cross-sectional schematic diagram of the locked state of the upper locking member and the lower locking seat of an LED display screen according to an embodiment of the present utility model.

[0026] Figure 8 This is a three-dimensional structural diagram of the right lock seat of an LED display screen according to an embodiment of the present invention.

[0027] Figure 9 This is an exploded view of the structure of the right lock seat of an LED display screen according to an embodiment of the present invention.

[0028] Figure 10 This is a cross-sectional schematic diagram of the right lock seat of an LED display screen according to an embodiment of the present invention.

[0029] Figure 11 This is a three-dimensional structural diagram of the left locking component of an LED display screen according to an embodiment of the present invention.

[0030] In the picture,

[0031] 1. LED display module; 2. Power control box; 3. Frame body; 4. Upper locking component; 5. Lower locking seat; 6. Left locking component; 7. Right locking seat; 8. Climbing handle frame; 9. Connecting part; 10. Step part; 11. Handle part; 12. Auxiliary fixing part; 13. Locking buckle; 14. Fixing seat; 15. Pressure block; 16. First elastic element; 17. Second elastic element; 18. Locking bar; 19. Handle handle; 20. Lock sleeve; 21. Protrusion; 2 2. First recess; 23. Second recess; 24. Lock head; 25. Lock hole; 26. Lock shaft; 27. Stepped shaft section; 28. Screw base; 29. ​​Lock knob; 30. Lock pull rod; 31. Third elastic element; 32. Flange lock core; 33. Shaft shoulder; 34. Front part of the rod; 35. Through hole; 36. Flange inner surface; 37. Pin; 38. Rear part of the rod; 39. Flange main surface; 40. Flange side; 41. Lock seat hole; 42. Locking element. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] Please see Figures 1 to 11 This illustration shows an LED display screen provided by an embodiment of the present invention, including a cabinet frame assembly, an LED display module 1 disposed on the front of the cabinet frame assembly, and a power control box 2 disposed on the back of the cabinet frame assembly. The cabinet frame assembly includes a frame body 3, an upper locking member 4 and a lower locking seat 5 disposed on the upper and lower sides of the frame body 3, and a left locking member 6 and a right locking seat 7 disposed on the left and right sides of the frame body. The upper locking member 4 and the lower locking seat 5 are used to connect two adjacent LED displays in the vertical direction. The left locking member 6 and the right locking seat 7 are configured to connect two adjacent LED displays in the horizontal direction at multiple predetermined angles. The right locking seat 7 is a nut-shaped structure with a through hole. The nut-shaped structure is detachably installed on the frame body 3 by a fastening component passing through the through hole.

[0034] Specifically, the box frame assembly also includes a climbing handle 8, which is detachably mounted on the frame body 3. The climbing handle 8 includes a connecting part 9, a pedal part 10, and a handle part 11 formed by bending downward from the pedal part 10. The connecting part 9 is detachably connected to the frame body 3. The handle part 11 extends into an auxiliary fixing part 12 towards the frame body 3. The auxiliary fixing part 12 is used to enhance the stability of the climbing handle 8. The auxiliary fixing part 12 is also detachably connected to the frame body 3. The connecting part 9 is located at both ends of the pedal part 10, and the auxiliary fixing part 12 is located below the pedal part 10. The connecting part 9 and the auxiliary fixing part 12 form a triangular structure.

[0035] More specifically, the connecting part 9, the pedal part 10, the handle part 11 and the auxiliary fixing part 12 are connected or formed into one piece.

[0036] More specifically, the pedal portion 10 is provided with anti-slip texture to increase friction, and the handle portion 11 is provided with an arc surface for easy gripping and use.

[0037] Specifically, the lower locking seat 5 is provided with a latch 13, a fixed seat 14, a pressure block 15, a first elastic element 16, and a second elastic element 17. The latch 13 is connected to the fixed seat 14 through the first elastic element 16, and the pressure block 15 is connected to the fixed seat 14 through the second elastic element 17. The upper locking member 4 is provided with a locking rod 18, a handle 19, and a locking sleeve 20. The handle 19 is threadedly connected to the locking sleeve 20, and the locking rod 18 is fixed to the handle 19. When locked, the latch 13 radially engages the locking rod 18, and the pressure block 15 axially presses the locking rod 18.

[0038] More specifically, the fixing base 14 is provided with a protrusion 21, the pressing block 15 is placed in the protrusion 21, the two ends of the pressing block 15 are respectively provided with a first recess 22 and a second recess 23, one end of the second elastic member 17 acts on the convex bottom wall of the protrusion 21, and the other end acts on the concave bottom wall of the first recess 22; the locking rod 18 is provided with a locking head 24, the locking head 24 is inserted into the second recess 23 and abuts against the concave bottom wall of the second recess 23.

[0039] More specifically, the latch 13 has a lock hole 25 in the middle, and the locking rod 18 is provided with a locking shaft 26, a stepped shaft section 27 and a lock head 24 in sequence along the direction towards the lock hole 25; in the natural state, the outer wall of the pressure block 15 abuts against the hole wall of the lock hole 25 so that the pressure block 15 is radially engaged with the latch 13; when locked, the lock hole 25 catches the stepped shaft section 27 so that the latch 13 is radially engaged with the locking rod 18.

[0040] In some specific embodiments, when locking, first grasp the handle 19 and push it upwards. The handle 19 moves the locking rod 18 upwards until the locking head 24 of the locking rod 18 contacts the second recess 23 of the pressure block 15. Continue pushing upwards, and the locking head 24 pushes the pressure block 15 upwards, causing the pressure block 15 to move upwards. The locking block 15 and the latch 13 are released from their locking position. The second elastic element 17 connected to the pressure block 15 contracts under the pushing force, and is pushed upwards until the latch 13, under the elastic force of the first elastic element 16, engages with the step of the locking rod 18. After the shaft section 27 is engaged, release the hand. After the force is released, the second elastic element 17 rebounds. The pressure block 15 pushes the lock head 24 so that the lock head 24 and the latch 13 are elastically pressed together. Finally, rotate the lock sleeve 20 to lock the box frame. To unlock, simply rotate the lock sleeve 20 in the opposite direction and press the latch 13. The latch 13 drives the lock hole 25 to radially exit the slot of the stepped shaft section 27. At this time, the second elastic element 17 resets and drives the pressure block 15 to reset, thereby pushing the lock head 24 of the lock rod 18 out of the latch 13 to complete the unlocking.

[0041] Specifically, the nut-shaped structure includes a lock cylinder assembly and a screw base 28. The lock cylinder assembly includes a lock knob 29, a lock pull rod 30, a third elastic element 31, and a flange lock cylinder 32. The screw base 28 and the flange lock cylinder 32 are respectively engaged on both sides of the frame body 3. The lock knob 29 is fixed to the lock pull rod 30. The flange lock cylinder 32 is sleeved on the lock pull rod 30 and connected to the lock pull rod 30 through the third elastic element 31. The flange lock cylinder 32 and the lock pull rod 30 are clearance-fitted so that the flange lock cylinder 32 can rotate around the lock pull rod 30 to switch the angle surface and engage with the corresponding left lock piece 6. The lock pull rod 30 is threadedly connected to the screw base 28 to lock the lock cylinder assembly. More specifically, as shown... Figure 8 The nut-shaped structure shown refers to a structure whose overall shape resembles a nut, but which does not actually have threads.

[0042] More specifically, the locking rod 30 is provided with a shoulder 33 and a front part 34, the flange lock core 32 is provided with a through hole 35 and a flange inner surface 36, the front part 34 of the rod is clearance-fitted with the through hole 35, the third elastic element 31 is sleeved on the locking rod 30 and acts between the flange inner surface 36 and the shoulder 33; the locking knob 29 is fixed to the locking rod 30 by a pin 37, the locking rod 30 is also provided with a rear part 38, the rear part 38 of the rod is an externally threaded rod, and the externally threaded rod is threadedly connected to the internally threaded hole of the screw base 28.

[0043] More specifically, the surface of the flange lock core 32 away from the screw base 28 is the flange main surface 39. The flange lock core 32 has multiple flange side surfaces 40 circumferentially arranged on its side. Each flange side surface 40 forms an angle with the flange main surface 39 at a different angle. Each flange side surface 40 can be connected to the corresponding left locking member 6 to splice the two frame bodies 3 with a selected angle relationship. A lock seat hole 41 is opened in the middle of each flange side surface 40. The left locking member 6 includes a locking member 42, which can be aligned and locked with the lock seat hole 41.

[0044] In some specific embodiments, the lock cylinder assembly is formed by the cooperation between the lock knob 29, the lock pull rod 30, the third elastic element 31, and the flange lock cylinder 32, creating a movable whole. Specifically, when the lock knob 29 is lifted, the shoulder 33 acts on the third elastic element 31, which in turn acts on the flange lock cylinder 32. Thus, lifting the lock knob 29 causes the flange lock cylinder 32 to move upward synchronously. When moving downward, the elastic preload of the third elastic element 31 stably mounts the flange lock cylinder 32 onto the lock pull rod 30. When it is necessary to lock the angle surface of the flange lock cylinder 32, the flange lock cylinder 32 is first rotated around the lock pull rod 30 until the target angle surface is opposite to the left lock piece 6. Then, the flange lock cylinder 32 is vertically placed into the lock cylinder mounting slot of the frame body 3. When the rear part 38 of the lock pull rod 30 is aligned with the internal thread hole of the screw base 28, the bolt is rotated... Locking knob 29 drives locking rod 30 to rotate via pin 37. The external thread of the rod rear 38 is screwed into the internal threaded hole, causing locking rod 30 to move axially toward the frame, thereby moving locking knob 29 toward flange lock core 32 to press flange lock core 32 into the lock core mounting groove of frame body 3. When it is necessary to switch the angle surface of flange lock core 32, lock knob 29 is rotated in the opposite direction. After the external thread of the rod rear 38 is screwed out of the internal threaded hole, lock knob 29 is lifted. Lock knob 29 drives locking rod 30 to move upward. Since flange inner surface 36 and shoulder 33 are connected by third elastic element 31, shoulder 33 moves upward, pushing third elastic element 31 to move upward, thereby causing flange lock core 32 to move upward. After flange lock core 32 is disengaged from lock core mounting groove of frame body 3, it can rotate freely around locking rod 30 to switch angle surfaces.

[0045] In summary, this LED display screen combines a climbing frame and a handle frame to form a climbing handle frame 8, and the connecting part 9 and the auxiliary fixing part 12 form a stable triangular structure. This not only reduces the size and simplifies the structure after the climbing frame and handle frame are integrated, but also enhances the stability of the climbing handle frame 8. The upper locking part 4 and the lower locking seat 5 of this LED display screen, when locked, have the locking head 24 embedded in the second recess 23 of the pressure block 15. The pressure block 15 is installed in the protrusion 21 of the fixing seat 14, preventing the locking head 24 from being exposed outside the fixing seat 14 and avoiding the risk of accidental impact to the locking head 24. Moreover, under the action of the first elastic member 16, the stepped shaft section 27 and the buckle... The locking hole 25 of 13 is radially engaged. Under the action of the second elastic element 17, the pressure block 15 pushes the lock head 24 axially, so that the lock head 24 and the lock buckle 13 are tightly fitted, thereby achieving double locking of the locking rod 18 in both radial and axial directions, making the locking rod 18 less prone to loosening and more stable and reliable. The left locking part 6 and the right locking seat 7 of this LED display are connected to the screw base 28 by the locking rod 30 to simplify the operation. Specifically, the nut-shaped structure of the right locking seat 7 can be tightened to the frame body 32 by rotating the locking knob 29 through the threaded connection. Rotating the locking knob 29 in the opposite direction can release the flange locking core 32. The structure is simple and the operation is convenient.

[0046] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. An LED display screen comprising a cabinet frame assembly, an LED display module arranged on the front of the cabinet frame assembly, and a power control box arranged on the back of the cabinet frame assembly, characterized in that, The housing frame assembly includes a frame body, upper locking members and lower locking seats disposed on the upper and lower sides of the frame body, and left locking members and right locking seats disposed on the left and right sides of the frame body. The upper locking members and lower locking seats are used to connect two adjacent LED displays in the vertical direction. The left locking members and right locking seats are configured to connect two adjacent LED displays in the horizontal direction at multiple predetermined angles. The right locking seat is a nut-shaped structure with a through hole. The nut-shaped structure is detachably installed on the frame body by a fastening component passing through the through hole.

2. The LED display screen of claim 1, wherein, The box frame assembly also includes a climbing handle frame, which is detachably mounted on the frame body. The climbing handle frame includes a connecting part, a footboard part, and a handle part formed by bending downward from the footboard part. The connecting part is detachably connected to the frame body. The handle part extends into an auxiliary fixing part towards the frame body. The auxiliary fixing part is used to enhance the stability of the climbing handle frame. The auxiliary fixing part is also detachably connected to the frame body. The connecting part is located at both ends of the footboard part, and the auxiliary fixing part is located below the footboard part. The connecting part and the auxiliary fixing part form a triangular structure.

3. An LED display screen as described in claim 2, characterized in that, The connecting part, pedal part, handle part and auxiliary fixing part are connected or formed into one piece.

4. An LED display screen as described in claim 2, characterized in that, The pedal has anti-slip textures to increase friction, and the handle has an arc surface for easy gripping and use.

5. An LED display screen as described in claim 1, characterized in that, The lower locking seat is provided with a buckle, a fixed seat, a pressure block, a first elastic element, and a second elastic element. The buckle is connected to the fixed seat through the first elastic element, and the pressure block is connected to the fixed seat through the second elastic element. The upper locking member is provided with a locking rod, a handle, and a locking sleeve. The handle is threadedly connected to the locking sleeve, and the locking rod is fixed to the handle. When locked, the buckle radially engages the locking rod, and the pressure block axially presses the locking rod.

6. An LED display screen as described in claim 5, characterized in that, The fixing seat has a protrusion, the pressure block is placed in the protrusion, and the two ends of the pressure block are respectively provided with a first recess and a second recess. One end of the second elastic member acts on the convex bottom wall of the protrusion, and the other end acts on the concave bottom wall of the first recess. The locking rod is provided with a locking head, which is inserted into the second recess and presses against the concave bottom wall of the second recess.

7. An LED display screen as described in claim 5, characterized in that, The latch has a lock hole in the middle, and the locking rod is provided with a locking shaft, a stepped shaft section and a lock head in sequence along the direction towards the lock hole; in the natural state, the outer wall of the pressure block abuts against the wall of the lock hole to make the pressure block radially engage with the latch; when locked, the lock hole catches the stepped shaft section to make the latch radially engage with the locking rod.

8. An LED display screen as described in claim 1, characterized in that, The nut-shaped structure includes a lock cylinder assembly and a screw base. The lock cylinder assembly includes a lock knob, a lock pull rod, a third elastic element, and a flange lock cylinder. The screw base and the flange lock cylinder are respectively engaged on both sides of the frame body. The lock knob is fixed to the lock pull rod. The flange lock cylinder is sleeved on the lock pull rod and connected to the lock pull rod through the third elastic element. The flange lock cylinder and the lock pull rod are clearance-fitted so that the flange lock cylinder can rotate around the lock pull rod to switch the angle surface and engage with the corresponding left lock piece. The lock pull rod is threadedly connected to the screw base to lock the lock cylinder assembly.

9. An LED display screen as described in claim 8, characterized in that, The locking rod has a shoulder and a front part, the flange lock core has a through hole and an inner surface of the flange, the front part of the rod is clearance-fitted with the through hole, the third elastic element is sleeved on the locking rod and acts between the inner surface of the flange and the shoulder; the locking knob is fixed to the locking rod by a pin, the locking rod also has a rear part, the rear part of the rod is an externally threaded rod, the externally threaded rod is threadedly connected to the internally threaded hole of the screw base.

10. An LED display screen as described in claim 8, characterized in that, The surface of the flange lock core away from the screw base is the flange main surface. The flange lock core has multiple flange side surfaces circumferentially arranged on its side. Each flange side surface forms an angle with the flange main surface. Each flange side surface can be connected to a corresponding left locking member to splice two frame bodies with a selected angle relationship. A lock seat hole is opened in the middle of each flange side surface. The left locking member includes a locking member, which can be aligned and locked with the lock seat hole.

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