A combined carrier

Abstract

The present application relates to ammunition storage and transportation equipment technical field, disclose a kind of combined type ammunition carrier, including rack, supporting plate, stop block and baffle are installed on rack, rack is equipped with bunch of ammunition ratchet mechanism and lateral lock catch component, support column is fixed on rack, interlayer lap joint component is equipped on support column, positioning hole and positioning block are respectively provided at both ends of support column, bunch of ammunition ratchet mechanism includes rotating shaft, bandage, ratchet and pawl;Lateral lock catch component includes base, handle, lock hook and hanging plate;Interlayer lap joint component includes lap joint plate, locking plate, plug-in pin, cylindrical pin.The present application is made by ratchet and pawl one-way engagement, so that bandage is tightened self-locking and prevents loosening, cooperate with cartridge holder and lock tongue to realize the quick disassembly and assembly of projectile body, lock hook is driven by handle, rack transverse fast locking is completed, and rely on screw rod to adjust locking tightness;Interlayer lap joint component and plug-in pin are linked and locked, plug-in pin can fix locking plate, lock interlayer structure, and left and right rack is vertically positioned simultaneously.

Description

Technical Field

[0001] This invention belongs to the technical field of ammunition storage and transportation equipment, specifically, it relates to a combined ammunition carrier. Background Technology

[0002] As standard ammunition, artillery shells require specialized support equipment for orderly placement and restraint protection in various scenarios, including long-term storage in warehouses, long-distance road transport, and temporary stacking in field positions. This prevents shells from rolling, colliding, causing cosmetic damage, or posing safety hazards. As a fundamental support device in the ammunition storage and transportation process, the structure of the ammunition rack directly determines the stability of ammunition storage, space utilization, and loading / unloading efficiency. Especially when managing large quantities of ammunition centrally, the ammunition rack needs to have the ability to be flexibly combined and arranged to adapt to different storage capacities and transportation conditions.

[0003] However, current ammunition racks have support surfaces and straps on the frame, which cannot be flexibly arranged into multiple rows according to the warehouse layout. When stacked vertically, they can only be simply stacked and aligned by the concave and convex structures at the bottom and top of the frame, lacking a reliable interlayer locking structure.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: A combined ammunition carrier includes a frame, on which a support plate, a stop block and a baffle are installed. The frame is equipped with a ammunition ratchet mechanism and a side locking assembly. Several support columns are vertically fixed on the frame. Some of the support columns are equipped with interlayer overlapping components. The top of each support column has a positioning hole and the bottom is connected to a positioning block. The spring ratchet mechanism includes a rotating shaft, a strap, a ratchet, and a pawl. The rotating shaft is rotatably mounted on the frame. A take-up roller and a ratchet are mounted on the rotating shaft. The strap is wound on the take-up roller. The end of the strap is connected to a retainer. A locking rod is connected to the frame. A locking tongue is mounted on the locking rod. The lateral locking assembly includes a base, a handle, a locking hook, and a hanging plate. The base and the hanging plate are connected to both ends of the frame. A handle is rotatably mounted on the base, and a locking hook is connected to the handle. The interlayer overlapping assembly includes an overlapping plate, a locking plate, a plug pin, and a cylindrical pin. The sidewall of the support column is connected to the cylindrical pin, and the overlapping plate and the locking plate are installed on the support column.

[0006] In a preferred embodiment of the present invention, the support plate is arranged along the length of the frame, a stop block is connected to the support plate, a baffle is rotatably installed at the end of the frame, and a return torsion spring is installed between the baffle and the frame.

[0007] In a preferred embodiment of the present invention, the take-up roller and the ratchet are respectively mounted on both ends of the rotating shaft.

[0008] In a preferred embodiment of the present invention, a pawl is rotatably mounted on the frame, the pawl engages with a ratchet, a lever is connected to the pawl, and a protective cover is mounted on the frame, covering the ratchet and pawl.

[0009] In a preferred embodiment of the present invention, a connecting shaft is rotatably mounted in the handle, a screw is engaged in the connecting shaft, and a locking hook is connected to the end of the screw.

[0010] In a preferred embodiment of the present invention, the support columns are configured as four columns, which are vertically fixed at the four corners of the frame, and the interlayer overlapping components are assembled on two diagonally arranged support columns.

[0011] In a preferred embodiment of the present invention, the side wall of the support column is connected with bolts, and an overlapping plate is rotatably mounted on the bolts. The overlapping plate has a groove along its length, and a slider is slidably embedded inside the groove.

[0012] In a preferred embodiment of the present invention, a locking plate is connected to the end of the slider. The locking plate is parallel to and attached to the inner side of the overlapping plate. A slot is provided on the overlapping plate, and a locking groove is provided on the locking plate. A cylindrical pin is embedded in the slot and the locking groove.

[0013] In a preferred embodiment of the present invention, a tension spring is connected between the bolt and the locking plate, with one end of the tension spring attached to the bolt and the other end attached to the locking plate.

[0014] In a preferred embodiment of the present invention, the side wall of the support column is provided with a pin hole, the locking plate is provided with a plug hole corresponding to the pin hole, a plug pin is inserted into the plug hole and the pin hole, a locking pawl is hinged to the end of the plug pin, and a torsion spring is assembled between the locking pawl and the plug pin.

[0015] Compared with the prior art, the present invention has the following advantages: This invention utilizes the unidirectional engagement of the ratchet and pawl in the bullet-binding ratchet mechanism to tighten and lock the straps, preventing loosening. Combined with the locking seat and latch, it enables rapid assembly and disassembly of the bullet. The handle of the lateral locking assembly drives the locking hook, achieving rapid lateral locking of the frame, with the tightness adjusted by a screw. The interlayer overlapping assembly and the insert pin work together to lock the structure, while simultaneously providing vertical positioning for the left and right frames.

[0016] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram: Figure 1 A three-dimensional diagram of a modular ammunition carrier; Figure 2 This is a schematic diagram of a combined ammunition carrier after assembly. Figure 3 This is a schematic diagram of a combined ammunition carrier's ammunition ratchet mechanism; Figure 4 This is a schematic diagram of a lateral locking assembly for a modular ammunition carrier. Figure 5 This is a schematic diagram of an interlayer overlapping component of a modular ammunition carrier. Figure 6 A side view of an interlayer overlapping assembly of a modular ammunition carrier; Figure 7 An exploded view of the interlayer overlapping components of a modular ammunition carrier. Figure 8 This is a schematic diagram of the installation of the locking plate of a combined ammunition carrier.

[0018] In the diagram: 1. Frame; 2. Support plate; 3. Stop; 5. Baffle; 6. Spring-loaded ratchet mechanism; 61. Rotating shaft; 62. Take-up roller; 63. Strap; 64. Card holder; 65. Locking bar; 66. Locking tongue; 67. Ratchet; 68. Pad; 69. Lever; 610. Protective cover; 7. Side locking assembly; 71. Base; 72. Handle; 73. Connecting shaft; 74. Locking hook 75. Hanging plate; 76. Screw; 8. Support column; 81. Positioning hole; 82. Positioning block; 9. Interlayer overlap assembly; 91. Bolt; 92. Overlap plate; 93. Slide groove; 94. Slider; 95. Locking plate; 96. Pin hole; 97. Insertion hole; 98. Slot; 99. Locking groove; 910. Cylindrical pin; 911. Insertion pin; 912. Locking claw; 913. Tension spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0020] like Figures 1 to 8As shown, a combined ammunition carrier includes a frame 1, on which a support plate 2, a stop block 3, and a baffle 5 are mounted. The frame 1 is equipped with a ammunition ratchet mechanism 6 and a lateral locking assembly 7. Several support columns 8 are vertically fixed on the frame 1, and some of the support columns 8 are equipped with interlayer overlapping assemblies 9. The top of each support column 8 has a positioning hole 81, and the bottom is connected to a positioning block 82. The ammunition ratchet mechanism 6 includes a rotating shaft 61, a strap 63, a ratchet 67, and a pawl 68. The rotating shaft 61 is rotatably mounted on the frame 1, and a take-up roller 62 and a ratchet 67 are mounted on the rotating shaft 61. A binding strap 63 is wound around the frame 1, and a card seat 64 is connected to the end of the binding strap 63. A locking rod 65 is connected to the frame 1, and a locking tongue 66 is installed on the locking rod 65. The side locking assembly 7 includes a base 71, a handle 72, a locking hook 74, and a hanging plate 75. The base 71 and the hanging plate 75 are connected to both ends of the frame 1. The handle 72 is rotatably installed on the base 71, and the locking hook 74 is connected to the handle 72. The interlayer overlap assembly 9 includes an overlap plate 92, a locking plate 95, a plug pin 911, and a cylindrical pin 910. The cylindrical pin 910 is connected to the side wall of the support column 8, and the overlap plate 92 and the locking plate 95 are installed on the support column 8. In this setup, the support plate 2 works in conjunction with the stop block 3 and the baffle 5 to support the projectile and limit its movement forward and backward. The projectile ratchet mechanism 6 secures the projectile body, the lateral locking assembly 7 locks the adjacent frames together laterally, and the positioning hole 81 of the support column 8 works in conjunction with the positioning block 82 to complete the initial alignment of the upper and lower layers. Then, the interlayer overlap assembly 9 achieves rigid locking between layers, so that a single projectile rack can simultaneously perform the combined functions of projectile fixation, lateral array splicing, and vertical multi-layer stacking.

[0021] like Figures 1 to 8 As shown, in a specific embodiment, the support plate 2 is arranged along the length of the frame 1, and a stop block 3 is connected to the support plate 2. A baffle 5 is rotatably installed at the end of the frame 1, and a return torsion spring is installed between the baffle 5 and the frame 1. In this configuration, the support plate 2 supports the bottom of the projectile, and the stop block 3 abuts against the tail of the projectile to limit its backward movement. Under the action of the return torsion spring, the baffle 5 automatically rotates back to abut against the front end of the projectile, completing the axial limitation of the projectile in the front-back direction and preventing the projectile from moving back and forth.

[0022] like Figures 1 to 8 As shown, the take-up roller 62 and the ratchet 67 are respectively mounted on both ends of the rotating shaft 61. In this configuration, the rotating shaft 61 synchronously drives the take-up roller 62 and the ratchet 67 to rotate together, so that the action of the take-up roller 62 in winding and unwinding the strap 63 is synchronized with the locking action of the ratchet 67, thereby achieving simultaneous tightening of the strap and simultaneous one-way locking.

[0023] like Figures 1 to 8As shown, a pawl 68 is rotatably mounted on the frame 1, and the pawl 68 engages with the ratchet 67. A lever 69 is connected to the pawl 68. A protective cover 610 is mounted on the frame 1, covering the ratchet 67 and the pawl 68. In this configuration, the pawl 68 engages with the teeth of the ratchet 67 to restrict the ratchet 67 from rotating in the opposite direction, preventing the strap 63 from loosening and springing back after tightening. Moving the lever 69 causes the pawl 68 to disengage from the ratchet 67, thereby releasing the strap 63 from the lock. The protective cover 610 shields the ratchet 67 and the pawl 68 to prevent foreign objects from getting stuck and affecting the locking function.

[0024] like Figures 1 to 8 As shown, a connecting shaft 73 is rotatably mounted in the handle 72, and a screw 76 is engaged in the connecting shaft 73. A locking hook 74 is connected to the end of the screw 76. In this configuration, turning the handle 72 drives the connecting shaft 73 to rotate, and the connecting shaft 73 pulls the locking hook 74 to tighten via the screw 76, thereby achieving rapid locking of the locking hook 74 with the hanging plate 75. Rotating the screw 76 changes its engagement length with the connecting shaft 73, thereby adjusting the locking stroke and locking force of the locking hook 74.

[0025] like Figures 1 to 8 As shown, furthermore, the support columns 8 are configured as four columns, which are vertically fixed at the four corners of the frame 1. The interlayer overlap components 9 are assembled on the two diagonally arranged support columns 8. In this configuration, the four support columns 8 evenly bear the load of the upper stack, and the upper and lower frames are symmetrically locked by the two sets of diagonally arranged interlayer overlap components 9, ensuring balanced force and stable and reliable connection when multiple layers are stacked.

[0026] like Figures 1 to 8 As shown, further, the support column 8 is connected to a bolt 91 on its side wall, and a lap plate 92 is rotatably mounted on the bolt 91. The lap plate 92 has a groove 93 along its length, and a slider 94 is slidably embedded inside the groove 93. In this configuration, the bolt 91 allows the lap plate 92 to rotate around the bolt 91. When stacking, the lap plate 92 rotates out to engage with the cylindrical pin 910. When avoiding obstacles, the lap plate 92 rotates outward to create stacking space. The groove 93 and the slider 94 cooperate to provide a sliding guide for the locking plate 95, allowing the locking plate 95 to slide along the length of the lap plate 92.

[0027] like Figures 1 to 8As shown, further, a locking plate 95 is connected to the end of the slider 94. The locking plate 95 is parallel and fits against the inner side of the overlapping plate 92. The overlapping plate 92 has a slot 98, and the locking plate 95 has a locking groove 99. A cylindrical pin 910 is embedded in the slot 98 and the locking groove 99. In this configuration, the slider 94 drives the locking plate 95 to slide up and down along the slide groove 93, so that the slot 98 and the locking groove 99 are misaligned. After the locking plate 95 slides down, the locking groove 99 hooks the cylindrical pin 910 from the side, and together with the slot 98 of the overlapping plate 92, it clamps the cylindrical pin 910, realizing the vertical locking of the upper and lower support columns.

[0028] like Figures 1 to 8 As shown, a tension spring 913 is further connected between the bolt 91 and the locking plate 95. One end of the tension spring 913 is attached to the bolt 91, and the other end is attached to the locking plate 95. In this configuration, the tension spring 913 continuously applies an upward pulling force to the locking plate 95. After unlocking, the tension spring 913 automatically pulls the locking plate 95 upward to slide back to its original position, so that the locking groove 99 and the slot 98 are realigned, facilitating the disengagement of the cylindrical pin 910 from the slot to complete the interlayer separation.

[0029] like Figures 1 to 8 As shown, further, the side wall of the support column 8 has a horizontally opened pin hole 96, and the locking plate 95 has an insertion hole 97 corresponding to the pin hole 96. An insertion pin 911 is inserted into the insertion hole 97 and the pin hole 96. A locking claw 912 is hinged to the end of the insertion pin 911, and a torsion spring is assembled between the locking claw 912 and the insertion pin 911. In this configuration, the insertion pin 911 simultaneously passes through the insertion hole 97 and the pin hole 96, which on the one hand restricts the sliding of the locking plate 95 along the slide groove 93 and maintains the locking state of the locking groove 99 clamping the cylindrical pin 910, and on the other hand restricts the vertical displacement of the left and right ammunition racks to achieve positioning. The torsion spring drives the locking claw 912 to open outward and abut against the outer wall of the locking plate 95 to prevent the insertion pin 911 from accidentally coming out of the hole.

[0030] The implementation principle of a combined ammunition carrier in this embodiment is as follows: When loading ammunition using this ammunition carrier, first flip the baffle 5 outward and open it, place the ammunition stably on the surface of the support plate 2 above the frame 1, and continuously push the ammunition into the frame 1 until the tail end face of the ammunition is in contact with the stop block 3. Release the baffle 5, and the baffle 5 will rotate back to its original position by the matching torsion spring, and abut against the front end of the ammunition to complete the front and rear limit of the ammunition. Then, the lever 69 is moved upwards, causing the pawl 68 to disengage from the tooth groove of the ratchet 67, releasing the one-way locking constraint of the ratchet. The rotating shaft 61 is rotated, and the winding roller 62 releases the binding strap 63. The binding strap 63 is pulled and placed across the outer surface of the shell. The locking seat 64 at the end of the binding strap 63 is aligned with the locking tongue 66 on the locking rod 65 and inserted to fasten, thus completing the fixation of the end of the binding strap 63. The rotating shaft 61 is rotated in the opposite direction, and the rotating shaft 61 synchronously drives the winding roller 62 to rotate in the same direction as the ratchet 67. The winding roller 62 continuously winds up the binding strap 63, gradually tightening the binding strap 63 to achieve the binding and fixation of the shell. During the rotation of the ratchet 67, it continuously contacts and engages with the pawl 68. Under the action of its own elasticity, the pawl 68 is locked in the tooth groove of the ratchet 67, restricting the ratchet 67 from rotating in the opposite direction and maintaining the taut state of the binding strap 63. The protective cover 610 on the outside of the ratchet 67 and the pawl 68 plays a protective and shielding role. If it is necessary to remove the shell, release the locking between the jack 64 and the locking tongue 66 to take out the shell. When there is no shell to store, continue to rotate the rotating shaft 61 to completely store all the straps 63 on the surface of the take-up roller 62.

[0031] When two ammunition racks need to be arrayed and spliced ​​in a left-right direction, bring the sides of the two racks 1 together, aligning the hook 74 of the lateral locking assembly 7 on one rack 1 with the hanging plate 75 on the side of the other rack 1. Hook the hook 74 onto the outside of the hanging plate 75, and turn the handle 72 of the lateral locking assembly 7. The handle 72 rotates, and the screw 76 engaged inside the connecting shaft 73 pulls the hook 74 to tighten it. The hook 74 fits tightly against the hanging plate 75, completing the lateral locking and fixing of the adjacent racks 1. The distance between the hook 74 and the connecting shaft 73 can be changed by rotating the screw 76, thereby adjusting the overall locking tightness of the lateral locking assembly 7. When it is necessary to separate the ammunition racks that are spliced ​​left and right, turn the handle 72 in the opposite direction. The handle 72 drives the hook 74 to release the hanging plate 75, and the hook 74 can be removed directly to separate the two racks 1.

[0032] When it is necessary to stack the ammunition racks, first rotate the overlapping plate 92 and locking plate 95 on the diagonal support column 8. The overlapping plate 92 rotates outward around the bolt 91, and the overlapping plate 92 and locking plate 95 avoid the support column 8. Use hoisting equipment to hoist the upper frame 1 to the top of the lower frame 1, so that the positioning blocks 82 at the bottom of the four upper support columns 8 are aligned with the positioning holes 81 at the top of the four lower support columns 8. Slowly lower the upper frame 1 so that the positioning blocks 82 are embedded in the positioning holes 81, and complete the initial alignment of the upper and lower frames. After alignment, rotate the overlapping plate 92 and locking plate 95 to a vertical position. Simultaneously, the cylindrical pin 910 on the side wall of the support column 8 embeds into the slot 98 of the overlapping plate 92 and the locking groove 99 of the locking plate 95. Pull the locking plate 95 downwards, and the slider 94 slides down along the slide groove 93. The insertion hole 97 on the locking plate 95 aligns with the pin hole 96 on the side wall of the support column 8. Insert the insertion pin 911 laterally through the insertion hole 97 and the pin hole 96. After insertion, the insertion pin 911 restricts the sliding and rotation of the locking plate 95 and overlapping plate 92, locking the interlayer overlapping assembly 9. The two ammunition carriers on the left and right sides are constrained by the rod structure of the insertion pin 911 to move vertically, thereby achieving vertical positioning of the left and right frames 1. During the insertion process, the locking claw 912 hinged at the end of the insertion pin 911 is pressed against the outer wall of the insertion pin 911. The torsion spring between the locking claw 912 and the insertion pin 911 is compressed synchronously. After the insertion pin 911 has completely passed through the locking plate 95 and the support column 8, the torsion spring rebounds and drives the locking claw 912 to open outward and abut against the outer wall of the locking plate 95, preventing the insertion pin 911 from coming out of the hole, thus completing the rigid locking of the upper and lower and left and right frames 1. When it is necessary to separate the stacked ammunition racks, pinch the locking claw 912 at the end of the insertion pin 911 to compress the torsion spring, so that the locking claw 912 fits against the insertion pin 911. Pull the insertion pin 911 outward, and the insertion pin 911 will release the locking of the interlayer overlapping component 9. Then the tension spring 913 will pull the locking plate 95 to slide upward, and the locking groove 99 will no longer lock the cylindrical pin 910 from the side. At this time, the overlapping plate 92 and the locking plate 95 can be rotated outward to avoid the support column 8, and the upper frame 1 can be lifted and separated.

[0033] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A combined ammunition carrier, comprising a frame (1), characterized in that, The frame (1) is equipped with a support plate (2), a stop block (3) and a baffle (5). The frame (1) is also equipped with a spring ratchet mechanism (6) and a side locking assembly (7). Several support columns (8) are vertically fixed on the frame (1). Some of the support columns (8) are equipped with interlayer overlapping assemblies (9). The top of the support column (8) is provided with a positioning hole (81) and the bottom is connected to a positioning block (82). The bullet ratchet mechanism (6) includes a rotating shaft (61), a strap (63), a ratchet (67), and a pawl (68). The rotating shaft (61) is rotatably mounted on the frame (1). A take-up roller (62) and a ratchet (67) are mounted on the rotating shaft (61). The strap (63) is wound on the take-up roller (62). A card holder (64) is connected to the end of the strap (63). A locking rod (65) is connected to the frame (1). A locking tongue (66) is mounted on the locking rod (65). The side locking assembly (7) includes a base (71), a handle (72), a locking hook (74) and a hanging plate (75). The frame (1) is connected to the base (71) and the hanging plate (75) at both ends. The handle (72) is rotatably mounted on the base (71), and the locking hook (74) is connected to the handle (72). The interlayer overlap assembly (9) includes an overlap plate (92), a locking plate (95), a plug pin (911), and a cylindrical pin (910). The support column (8) has a cylindrical pin (910) connected to its side wall. The support column (8) is equipped with an overlap plate (92) and a locking plate (95).

2. The combined ammunition carrier according to claim 1, characterized in that, The support plate (2) is arranged along the length of the frame (1), and a stop block (3) is connected to the support plate (2). A baffle (5) is rotatably installed at the end of the frame (1), and a return torsion spring is installed between the baffle (5) and the frame (1).

3. The combined ammunition carrier according to claim 1, characterized in that, The take-up roller (62) and ratchet (67) are respectively mounted on both ends of the rotating shaft (61).

4. A combined ammunition carrier according to claim 1, characterized in that, A pawl (68) is rotatably mounted on the frame (1), and the pawl (68) engages with the ratchet (67). A lever (69) is connected to the pawl (68). A protective cover (610) is mounted on the frame (1), and the protective cover (610) covers the ratchet (67) and the pawl (68).

5. A combined ammunition carrier according to claim 1, characterized in that, A connecting shaft (73) is rotatably mounted in the handle (72), a screw (76) is engaged in the connecting shaft (73), and a locking hook (74) is connected to the end of the screw (76).

6. A combined ammunition carrier according to claim 1, characterized in that, The support columns (8) are set to four, and the four support columns (8) are vertically fixed at the four corners of the frame (1). The interlayer overlapping components (9) are assembled on the two support columns (8) arranged diagonally.

7. A combined ammunition carrier according to claim 1, characterized in that, The support column (8) is connected to a bolt (91) on its side wall. A lap plate (92) is rotatably mounted on the bolt (91). The lap plate (92) has a groove (93) along its length. A slider (94) is slidably embedded inside the groove (93).

8. A combined ammunition carrier according to claim 7, characterized in that, The end of the slider (94) is connected to a locking plate (95), which is parallel to the inner side of the overlapping plate (92). The overlapping plate (92) has a slot (98), and the locking plate (95) has a locking groove (99). The slot (98) and the locking groove (99) are fitted with cylindrical pins (910).

9. A combined ammunition carrier according to claim 8, characterized in that, A tension spring (913) is connected between the bolt (91) and the locking plate (95). One end of the tension spring (913) is attached to the bolt (91), and the other end is attached to the locking plate (95).

10. A combined ammunition carrier according to claim 8, characterized in that, The support column (8) has a pin hole (96) on its side wall. The locking plate (95) has a plug hole (97) at the position corresponding to the pin hole (96). A plug pin (911) is inserted into the plug hole (97) and the pin hole (96). A locking claw (912) is hinged to the end of the plug pin (911). A torsion spring is assembled between the locking claw (912) and the plug pin (911).

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