Cable distribution box with take-up function

Abstract

The invention belongs to the technical field of distribution boxes, particularly relates to a cable distribution box with a take-up function, and aims to solve the problem that a winding device in the prior art can cause a cable to generate torsional stress and then influence later use, the cable distribution box comprises a box door and a cable body, and the inner side of the box door is provided with three groups of winding mechanisms from top to bottom; each group of winding mechanism comprises a fixed winding post and a movable post with the same height as the fixed winding post; and a positioning mechanism is arranged on the lower surface of the movable column, and the cable body is wound on the outer walls of the movable column and the fixed winding column in the same winding mechanism in a structure shaped like a Chinese character '8'. According to the invention, not only can the proper group number of winding mechanisms and the height of the fixed winding post be selected according to the length of the cable body so as to save space, but also the phenomenon that the cable body generates torsional stress after being wound is effectively prevented, a core wire and an outer skin inside the cable body are greatly protected, and the service life of the cable body is prolonged. And the service life reduction of the cable body caused by take-up and pay-off is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of distribution boxes, and in particular to a cable distribution box with a wire-collecting function. Background Art

[0002] The cable retracting box is a device used in power systems. It is mainly used to manage and retract cables and wires. It is commonly used in industries, power, construction, etc. This type of box integrates the functions of cable retraction and management, and can easily retract and release cables to ensure the normal operation of the equipment.

[0003] After searching, it is found that the distribution boxes with winding mechanisms in the prior art are mostly equipped with a winding roller with a winding function inside the box, and then equipped with a motor that can automatically wind, so as to achieve automatic winding; however, this winding method has many disadvantages. The longer the winding length, the larger the required roller diameter, which will occupy a large amount of space. Secondly, the winding of the roller will cause torsional stress in the cable itself, and after withdrawal, it will produce a twisted rope state, and even affect the shape of the internal core wire; therefore, we propose a new winding device that can reduce the volume of accessories and prevent torsional stress from occurring in the cable body. Summary of the invention

[0004] In view of the technical problem that the winding device in the prior art may cause torsional stress in the cable and thus affect the subsequent use, the present invention adopts the following technical solution: A cable distribution box with a wire-reeling function comprises a box door and a cable body, wherein three groups of winding mechanisms are arranged on the inner side of the box door from top to bottom, and each group of winding mechanisms comprises a fixed winding post and a movable post of the same height; a positioning mechanism is arranged on the lower surface of the movable post, and the cable body is wound on the outer walls of the movable post and the fixed winding post in the same group of winding mechanisms in a figure-8 structure; by providing the movable post and the fixed winding post, in conjunction with the winding method in the figure-8 structure, not only can the number of appropriate winding mechanism groups and the height of the fixed winding post be selected according to the length of the cable body to save space, but also the phenomenon of torsional stress being generated on the cable body after winding is effectively prevented, thereby greatly protecting the core wire inside the cable body and the outer skin, and reducing the shortening of the cable body life due to wire reeling and unreeling.

[0005] A further configuration of the present invention is that a wiring plug and a socket body are respectively fixed at both ends of the cable body, and two elastic clips with parallel openings facing upward are fixed inside the box door near the bottom to fix the socket body on the inner side of the box door.

[0006] A further configuration of the present invention is that a wire clamp for fixing the cable body is fixed near the top of the inner wall of the box door, and the wire clamp can ensure that the entire cable body will not fall off, and the connector end, i.e., the end connected to the power output of the electrical box, will not fall off.

[0007] A further arrangement of the present invention is that a mounting hole is opened in the middle of a middle group of winding mechanisms in the middle of the box door, and a fixing frame extending to the outside of the box door is fixed in the mounting hole, and a cooling fan is fixed in the fixing frame; two symmetrical air guide plates with an L-shaped longitudinal cross-section are fixed to the inner side of the box door near the middle, and the two air guide plates respectively guide wind to the winding mechanisms on the upper and lower sides, thereby accelerating the heat dissipation of the wound cable body under high temperature conditions. This winding method increases the spacing between the cable bodies, so this heat dissipation method is better than the heat dissipation method of winding in circles.

[0008] A further configuration of the present invention is that a through groove is opened in the middle of the bottom end of the movable column, and the bottom of the through groove is respectively opened with anti-slip sliding grooves parallel to each other near both ends, and the inner wall of the box door is fixed with an anti-slip sliding rail that forms a sliding connection with the anti-slip sliding groove; a spring baffle is fixed on the surface of the box door near the middle, and a clamping spring is fixed between the side of the spring baffle and the movable column; in conjunction with the positioning mechanism at the bottom end of the movable column, the coiled cable body can be tightened after the initial coiling is completed to prevent the cable body from falling off.

[0009] A further configuration of the present invention is that a rectangular notch is provided at the bottom of the through groove between the two anti-slip slide rails, and an insertion hole is provided in the middle of the rectangular notch, a back-stopping push rod is fixed to the bottom end of the rectangular notch, and a right-angle rack extending to the bottom of the back-stopping push rod is fixed to the side of the spring baffle close to the movable column; the back-stopping push rod is made of tough material; through such a configuration, the position of the movable column can be locked after the cable body is straightened to avoid the cable body being pulled all the time, thereby ensuring that the cable body is straightened without damaging its core wire.

[0010] A further configuration of the present invention is that the upper surfaces of both ends of the anti-retraction push rod are respectively reserved with fixed bosses and buckle plates, and the fixed bosses are plugged and fixed in the insertion holes; the buckle plates facilitate the release of the positioning of the movable column.

[0011] A further configuration of the present invention is that the cross-sections of the fixed winding column and the movable column are both in the form of a straight slot hole structure, and the fixed winding column and the movable column have the same structure at one end away from the box door, and the top of the fixed winding column is close to the edges of the long sides on both sides. Two anti-slip slide grooves parallel to each other are respectively opened, and the two anti-slip slide grooves are parallel to the long side edges, and the bottoms of the two anti-slip slide grooves at one end away from each other are opened with fixed slots, and limited blocks are fixed in the fixed slots; one side of the two anti-slip slide grooves of the fixed winding column and the movable column is provided with an anti-slip mechanism; and the anti-slip mechanism includes two anti-slip slide grooves that are centrally aligned. The two J-shaped baffle strips are respectively slidably connected in the two anti-slip grooves; tooth surfaces are reserved on the opposite sides of the two J-shaped baffle strips; and a rotating shaft hole is opened in the middle of the top of the fixed winding column, and an anti-slip hexagonal combination shaft is rotatably connected in the rotating shaft hole, and a rubbing gear is fixed on the circumference of the anti-slip hexagonal combination shaft, and the rubbing gear is meshed with the two tooth surfaces at the same time, and the bottom ends of the two J-shaped baffle strips are fixed with anti-slip sliders that form a sliding fit with the anti-slip grooves; then the two J-shaped baffle strips can be pushed out to both ends by rotating the rubbing gear to prevent the cable body from falling off.

[0012] The present invention is further configured in that eight positioning holes distributed symmetrically in the center are opened at the top of the fixed winding column near the periphery of the rotating shaft hole, and two sliding holes are opened above two of the positioning holes symmetrically located in the center of the rubbing gear, the top part of the anti-slip hexagonal combination shaft is a hexagonal column, and a spring recessed groove is opened in the middle of the top of the hexagonal column, a reset spring is fixed to the bottom of the spring recessed groove, and a screw cap is fixed to the top of the reset spring, a hexagonal hole is opened on the lower surface of the screw cap for sliding cooperation with the hexagonal column, two symmetrical lugs are fixed on the circumferential outer wall of the screw cap near the bottom, and a positioning rod matched with the position and aperture of the sliding hole is arranged on the lower surface of the lug; a protruding ring is fixed to the bottom end of the anti-slip hexagonal combination shaft; when adjusting the protruding length of the two J-shaped baffle strips, it is only necessary to pull the screw cap outwards first to disengage the two positioning rods from the positioning holes, and then rotate the screw cap to drive the rubbing gear to rotate.

[0013] A further configuration of the present invention is that the ends of the straight rod portions of the J-shaped baffle strip are each provided with a through hole parallel to the straight rod portion, and the hook-shaped end of another J-shaped baffle strip is provided with a guide rod that forms a sliding fit with the through hole; by such a configuration, the anti-slip effect of the J-shaped baffle strip can be increased.

[0014] The beneficial effects of the present invention are: 1. By setting up the movable column and the fixed winding column, combined with the winding method in the shape of a sleeping "8", not only can the appropriate number of winding mechanism groups and the height of the fixed winding column be selected according to the length of the cable body to save space, but also the phenomenon of torsional stress on the cable body after winding can be effectively prevented, which greatly protects the core wire inside the cable body and the outer skin, and reduces the shortening of the cable body life caused by the reeling and releasing of the wire.

[0015] 2. By setting the tightening spring and cooperating with the positioning mechanism at the bottom of the movable column, the wound cable body can be tightened after the initial winding is completed to prevent the cable body from falling off.

[0016] 3. Through the anti-offline mechanism, when adjusting the extension length of the two J-shaped baffle strips, you only need to pull the screw cap outwards to disengage the two positioning rods from the positioning holes, and then turn the screw cap to drive the rubbing gear to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the door part of the present invention; Figure 2 It is a schematic diagram of a half-section three-dimensional structure of a movable column in the present invention; Figure 3 It is a schematic diagram of the assembly structure of the movable column in the present invention; Figure 4 It is a schematic diagram of the overall structure of the fixed winding column in the present invention; Figure 5 It is a schematic diagram of the explosion structure of the anti-line-off mechanism in the present invention; Figure 6 It is an assembly diagram of the movable column and the anti-line-off mechanism in the present invention; Figure 7 It is a front view of the movable column in the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the cross-sectional structure along line AA; Fig. 9 It is a structural schematic diagram of the anti-offline mechanism in the present invention during the adjustment process.

[0018] In the figure: 1, box door; 2, spring; 3, spring baffle; 4, air guide plate; 5, cooling fan; 6, cable clamp; 7, wiring plug; 8, mounting hole; 9, fixed winding column; 10, socket body; 11, elastic clamp; 12, cable body; 13, anti-slip slide rail; 14, movable column; 141, plug hole; 142, rectangular notch; 143, anti-slip slide groove 1; 15, anti-slip mechanism; 151, J-shaped baffle strip; 152, screw cap ; 153, lug; 154, rubbing gear; 155, guide rod; 156, anti-slip hexagonal combination shaft; 157, reset spring; 158, positioning rod; 159, protruding ring; 1510, through hole; 1511, anti-slip slider; 16, anti-retraction push rod; 161, buckle plate; 162, fixed boss; 17, right-angle rack; 18, anti-slip slide groove II; 19, shaft hole; 20, positioning hole; 21, limit block; 22, fixed slot. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0020] In this embodiment, refer to Figure 1-Figure 9 A cable distribution box with a wire-reeling function comprises a box door 1 and a cable body 12. Three groups of winding mechanisms are arranged on the inner side of the box door 1 from top to bottom, and each group of winding mechanisms comprises a fixed winding post 9 and a movable post 14 of the same height; a positioning mechanism is arranged on the lower surface of the movable post 14, and the cable body 12 is coiled on the outer wall of the movable post 14 and the fixed winding post 9 in the same group of winding mechanisms in an "8"-shaped structure; by providing the movable post 14 and the fixed winding post 9, in conjunction with the winding method in an "8"-shaped structure, not only can the number of winding mechanism groups and the height of the fixed winding post 9 be selected according to the length of the cable body 12 to save space, but also the phenomenon of torsional stress being generated in the cable body 12 after winding is effectively prevented, thereby greatly protecting the core wire inside the cable body 12 and the outer skin, and reducing the shortening of the cable body 12 life due to wire reeling and unreeling.

[0021] Reference Figure 1 The two ends of the cable body 12 are respectively fixed with a wiring plug 7 and a socket body 10, and two elastic card plates 11 with parallel openings facing upward are fixed inside the door 1 near the bottom to fix the socket body 10 on the inner side of the door 1.

[0022] Reference Figure 1 A wire clamp 6 for fixing the cable body 12 is fixed near the top of the inner wall of the box door 1. The wire clamp 6 can ensure that the cable body 12 as a whole will not fall off, and the connector end, that is, the end connected to the power output of the electric box, will not fall off.

[0023] Reference Figure 1 A mounting hole 8 is provided in the middle of a group of winding mechanisms in the middle of the box door 1, and a fixing frame extending to the outside of the box door 1 is fixed in the mounting hole 8, and a cooling fan 5 is fixed in the fixing frame; two mutually symmetrical air guide plates 4 with an L-shaped longitudinal section are fixed near the middle of the inner side of the box door 1, and the two air guide plates 4 respectively guide the wind to the winding mechanisms on the upper and lower sides, so as to accelerate the heat dissipation of the wound cable body 12 under high temperature conditions. This winding method increases the spacing between the cable bodies 12, so this heat dissipation method is better than the heat dissipation method of winding in circles.

[0024] Reference Figure 1-Figure 3 A through groove is opened in the middle of the bottom end of the movable column 14, and the bottom of the through groove is respectively opened with anti-slip grooves 143 parallel to each other near the two ends, and the inner wall of the box door 1 is fixed with an anti-slip slide rail 13 which is slidably connected with the anti-slip groove 143; a spring baffle 3 is fixed to the surface of the box door 1 near the middle, and a clamping spring 2 is fixed between the side of the spring baffle 3 and the movable column 14; by setting the clamping spring 2, in conjunction with the positioning mechanism at the bottom end of the movable column 14, the coiled cable body 12 can be tightened after the initial coiling is completed to prevent the cable body 12 from falling off.

[0025] Reference Figure 1-Figure 3 A rectangular notch 142 is provided at the bottom of the through groove between the two anti-slip rails 13, and a plug hole 141 is provided in the middle of the rectangular notch 142. A backstop rod 16 is fixed to the bottom end of the rectangular notch 142, and a right-angle rack 17 extending to the bottom of the backstop rod 16 is fixed to the side of the spring baffle 3 close to the movable column 14; the backstop rod 16 is made of a tough material; by such an arrangement, the position of the movable column 14 can be locked after the cable body 12 is straightened, avoiding the cable body 12 from being pulled all the time, thereby ensuring that the core wire of the cable body 12 is not damaged while ensuring that the cable body 12 is straightened.

[0026] Reference Figure 1-Figure 3 The upper surfaces of both ends of the anti-retraction push rod 16 are respectively reserved with fixed bosses 162 and buckle plates 161, and the fixed bosses 162 are inserted and fixed in the insertion holes 141; the buckle plates 161 facilitate the release of the positioning of the movable column 14.

[0027] Reference Figure 5-Figure 6 , Figure 8 , Fig. 9The cross-sections of the fixed winding column 9 and the movable column 14 are both straight slot hole structures, and the fixed winding column 9 and the movable column 14 have the same structure at one end away from the box door 1. The top of the fixed winding column 9 is close to the edges of the long sides on both sides and is respectively provided with two anti-slip slide grooves 18 parallel to each other, and the anti-slip slide grooves 18 are parallel to the long side edges. The two anti-slip slide grooves 18 are both provided with fixed slots 22 at the bottom of the grooves away from the ends of the two anti-slip slide grooves 18, and the fixed slots 22 are fixed with limited blocks 21; one side of the anti-slip slide grooves 18 of the fixed winding column 9 and the movable column 14 is provided with an anti-slip mechanism 15; and the anti-slip mechanism 15 includes two anti-slip mechanisms 15 that are symmetrically slidably connected to the two anti-slip mechanisms. A J-shaped baffle strip 151 in the second slide groove 18; tooth surfaces are reserved on the opposite sides of the two J-shaped baffle strips 151; and a rotating shaft hole 19 is opened in the middle of the top of the fixed winding column 9, and an anti-slip hexagonal combination shaft 156 is rotatably connected in the rotating shaft hole 19, and a rubbing gear 154 is fixed to the anti-slip hexagonal combination shaft 156 around its body, and the rubbing gear 154 is meshed with two tooth surfaces at the same time, and the bottom ends of the two J-shaped baffle strips 151 are fixed with anti-slip sliders 1511 that form a sliding fit with the anti-slip slide groove 18; then the two J-shaped baffle strips 151 can be pushed out to both ends by rotating the rubbing gear 154 to prevent the cable body 12 from falling off.

[0028] Reference Figure 5-Figure 6 , Figure 8 , Fig. 9 The top of the fixed winding column 9 is provided with eight positioning holes 20 which are centrally symmetrically distributed near the periphery of the rotating shaft hole 19, and the rubbing gear 154 is located above two of the centrally symmetrical positioning holes 20 and has two sliding holes. The top part of the anti-slip hexagonal combination shaft 156 is a hexagonal column, and a spring sinking groove is provided in the middle of the top of the hexagonal column. A reset spring 157 is fixed to the bottom of the spring sinking groove, and a screw cap 152 is fixed to the top of the reset spring 157. The lower surface of the screw cap 152 has a hexagonal column which forms a sliding fit with the hexagonal column. The outer wall of the screw cap 152 is fixed with two centrally symmetrical lugs 153 near the bottom end, and the lower surface of the lug 153 is provided with a positioning rod 158 matched with the position and diameter of the sliding hole; the bottom end of the anti-slip hexagonal combination shaft 156 is fixed with a protruding ring 159; when adjusting the extension length of the two J-shaped baffle strips 151, it is only necessary to pull the screw cap 152 outwards first to disengage the two positioning rods 158 from the positioning hole 20, and then rotate the screw cap 152 to drive the rubbing gear 154 to rotate.

[0029] Reference Figure 5 The ends of the straight rod parts of the J-shaped baffle strip 151 are each provided with a through hole 1510 parallel to the straight rod part, and the hook-shaped end of the other J-shaped baffle strip 151 is provided with a guide rod 155 that forms a sliding fit with the through hole 1510; by such an arrangement, the anti-slip effect of the J-shaped baffle strip 151 can be increased.

[0030] Working principle: when winding the cable body 12, first move the movable column 14 in each group of winding mechanisms closer to the fixed winding column 9, and then loosen the buckle plate 161 at the top of the anti-retraction push rod 16 to fix the movable column 14; then, the cable body 12 is wound in an "8" shape on the outer wall of the movable column 14 and the fixed winding column 9 in the same group of winding mechanisms; finally, after all the winding mechanisms are wound, pull the buckle plate 161 of the anti-retraction push rod 16, and under the action of the tightening spring 2, the movable column 14 moves to the side away from the fixed winding column 9, and then the coiled cable body 12 is slowly tightened and straightened; then loosen the buckle plate 161 at the top of the anti-retraction push rod 16 to finally fix the movable column 14.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cable distribution box with a cable collection function, comprising a box door (1) and a cable body (12), characterized in that: Three groups of winding mechanisms are arranged on the inner side of the box door (1) from top to bottom, and each group of winding mechanisms includes a fixed winding column (9) and a movable column (14) of the same height; a positioning mechanism is arranged on the lower surface of the movable column (14), and the cable body (12) is wound on the outer wall of the movable column (14) and the fixed winding column (9) in the same group of winding mechanisms in an "8"-shaped structure.

2. A cable distribution box with a wire collection function according to claim 1, characterized in that: A wiring plug (7) and a socket body (10) are respectively fixed at both ends of the cable body (12), and two elastic clamping plates (11) are fixed inside the box door (1) near the bottom end and are parallel to each other and open upward.

3. A cable distribution box with a wire collection function according to claim 1, characterized in that: A cable holder (6) for fixing the cable body (12) is fixed to the inner wall of the box door (1) near the top.

4. A cable distribution box with a wire collection function according to claim 1, characterized in that: A mounting hole (8) is provided in the middle of the middle group of winding mechanisms in the box door (1), and a fixing frame extending to the outside of the box door (1) is fixed in the mounting hole (8), and a heat dissipation fan (5) is fixed in the fixing frame; two mutually symmetrical air guide plates (4) with an L-shaped longitudinal cross section are fixed on the inner side of the box door (1) near the middle, and the two air guide plates (4) respectively guide wind to the winding mechanisms on the upper and lower sides.

5. The cable distribution box with wire collection function according to claim 1, characterized in that: A through groove is formed in the middle of the bottom end of the movable column (14), and parallel anti-slip grooves (143) are formed near both ends of the bottom of the through groove. An anti-slip rail (13) is fixed to the inner wall of the door (1) and is slidably connected to the anti-slip groove (143). A spring baffle (3) is fixed to the surface of the door (1) near the middle, and a retaining spring (2) is fixed between the side of the spring baffle (3) and the movable column (14).

6. A cable distribution box with a wire collection function according to claim 5, characterized in that: The bottom of the through groove is provided with a rectangular notch (142) between the two anti-slip slide rails (13), and a plug hole (141) is provided in the middle of the rectangular notch (142); a backstop push rod (16) is fixed to the bottom end of the rectangular notch (142), and a right-angle rack (17) extending toward the bottom of the backstop push rod (16) is fixed to the side of the spring baffle (3) close to the movable column (14); the backstop push rod (16) is made of a tough material.

7. A cable distribution box with a wire collection function according to claim 6, characterized in that: The upper surfaces of both ends of the anti-retraction push rod (16) are respectively reserved with fixing bosses (162) and buckle plates (161), and the fixing bosses (162) are inserted and fixed in the insertion holes (141).

8. The cable distribution box with wire collection function according to claim 1, characterized in that: The cross-sections of the fixed winding column (9) and the movable column (14) are both straight slot hole structures, and the fixed winding column (9) and the movable column (14) have the same structure at one end away from the box door (1). The top of the fixed winding column (9) is respectively provided with two mutually parallel anti-slip grooves (18) near the edges of the long sides on both sides, and the two anti-slip grooves (18) are parallel to the long sides. The two anti-slip grooves (18) are provided with fixed slots (22) at the bottom of the grooves at the ends away from each other, and the fixed slots (22) are fixed with limit blocks (21); one side of the anti-slip grooves (18) of the fixed winding column (9) and the movable column (14) is provided with an anti-slip mechanism (15); and the anti-slip mechanism (15) is provided with a fixed slot (22) at one end of the anti-slip grooves (18) of the fixed winding column (9) and the movable column (14); and the anti-slip mechanism (15) is provided with a fixed slot (22) at one end of the anti-slip grooves (18) of the fixed winding column (9) and the movable column (14). The mechanism (15) comprises two J-shaped baffle strips (151) which are slidably connected to two anti-slip grooves (18) in a centrally symmetrical manner; tooth surfaces are reserved on opposite sides of the two J-shaped baffle strips (151); a rotating shaft hole (19) is opened in the middle of the top of the fixed winding column (9); an anti-slip hexagonal combination shaft (156) is rotatably connected in the rotating shaft hole (19); a rubbing gear (154) is sleeved and fixed around the anti-slip hexagonal combination shaft (156); the rubbing gear (154) is meshed with two tooth surfaces at the same time; and an anti-slip slider (1511) which forms a sliding fit with the anti-slip groove (18) is fixed at the bottom ends of the two J-shaped baffle strips (151).

9. A cable distribution box with a wire collection function according to claim 8, characterized in that: The top of the fixed winding column (9) is provided with eight positioning holes (20) distributed symmetrically around the rotating shaft hole (19), and the rubbing gear (154) is provided with two sliding holes above two of the positioning holes (20) that are symmetrically distributed. The top of the anti-slip hexagonal combination shaft (156) is a hexagonal column, and a spring recess is provided in the middle of the top of the hexagonal column. A reset spring (157) is fixed to the bottom of the spring recess, and a screw cap (152) is fixed to the top of the reset spring (157). The lower surface of the screw cap (152) is provided with a hexagonal hole that is slidably matched with the hexagonal column. Two lugs (153) that are symmetrically distributed are fixed to the circumferential outer wall of the screw cap (152) near the bottom end, and a positioning rod (158) that matches the position and diameter of the sliding hole is provided on the lower surface of the lug (153). The bottom end of the anti-slip hexagonal combination shaft (156) is fixed with a protruding ring (159).

10. A cable distribution box with a wire collection function according to claim 9, characterized in that: The ends of the straight rod portions of the J-shaped baffle strips (151) are each provided with a through hole (1510) parallel to the straight rod portion, and the hook-shaped end of the other J-shaped baffle strip (151) is provided with a guide rod (155) that forms a sliding fit with the through hole (1510).

Images