Wire spool device in intelligent clothes airing system

Abstract

The utility model discloses a wire spool device in an intelligent clothes airing system, which relates to the technical field of wire spools and comprises a shell, a winding unit and an auxiliary unit. The shell is vertically placed in a hollow cuboid shape, and the four corners of the rear end in the shell are connected with the clothes hanger through connecting bolts. The winding unit comprises a rotating disc, a winding roller, a gear, a support, a motor, a clamping groove, a clamping column, a blocking column, a wire outlet and a steel wire rope. The outer side of the clamping column is fixedly connected with the inner end of the steel wire rope. The auxiliary units are installed on the left and right sides of the winding roller. The motor drives the winding roller to rotate to wind the steel wire rope, the abrasion degree of the steel wire rope is conveniently and visually checked, the disorder preventing assembly is arranged to prevent the disorder phenomenon when the steel wire rope is wound, the auxiliary wire hole and the abrasion-resistant smooth strip are additionally arranged to reduce abrasion to the steel wire rope, the service life is prolonged, and the wire leading hole is further arranged to guide the steel wire rope. And the steel wire rope is more stably wound and unwound.

Description

Technical Field

[0001] The utility model relates to the technical field of wire reels, in particular to a wire reel device in an intelligent clothes drying system. Background Technique

[0002] The intelligent clothes hanger is an integrated multi-functional intelligent clothes hanger improved from the traditional hand-cranked clothes hanger, and realizes functions such as the rising and falling of the clothes rod through the forward and reverse rotation of the motor;

[0003] A wire winding disc device for a clothes drying machine disclosed in a patent with the publication number of CN207046742U in the prior art includes a motor, the output shaft of the motor is arranged upwards, and the upper cross section of the output shaft of the motor is square. A wire winding disc is sleeved on the output shaft of the motor. The wire winding disc includes a first wire winding piece sleeved on the output shaft of the motor. On the output shaft of the motor above the first wire winding piece, a second wire winding piece, a first wire winding piece, a second wire winding piece and a first wire winding piece are sequentially sleeved. A wire winding groove is formed between the two first wire winding pieces; A matching hole is opened at the center of the first wire winding piece and the second wire winding piece, and the matching hole has the same cross section as the upper part of the output shaft of the motor;

[0004] It does not set a smooth and wear-resistant component to reduce the wear of the steel wire rope. After a long time of use, the steel wire rope is worn more seriously, and it is inconvenient to directly observe the steel wire rope through the wire winding disc, and it is inconvenient to check the wear degree of the steel wire rope. For this reason, we propose a wire reel device in an intelligent clothes drying system. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to overcome the existing defects, and provide a wire reel device in an intelligent clothes drying system, which drives a wire winding roller to rotate through a motor to wind the steel wire rope, is convenient for directly observing the wear degree of the steel wire rope, and is provided with an anti-disorder component to prevent the phenomenon of disorder when winding the steel wire rope. In addition, an auxiliary wire hole and a wear-resistant and smooth strip are provided to reduce the wear of the steel wire rope and increase the service life. A lead wire hole is also provided to guide the steel wire rope to make the winding and unwinding of the steel wire rope more stable, and the problems in the background technique can be effectively solved.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: A wire reel device in an intelligent clothes drying system, including a housing, a wire winding unit and an auxiliary unit;

[0007] Housing: It is placed vertically in the shape of a hollow cuboid, and the four corners at the rear end of the interior of the housing are connected to the clothes hanger through connecting bolts;

[0008] Winding unit: It includes a rotating disk, a winding roller, gears, a bracket, a motor, a card slot, a card post, a stop post, a wire outlet, and a steel wire rope. The outer ends of the rotating disks are rotatably connected to the left and right sides of the middle parts of the upper and lower ends inside the housing, and the inner ends of the rotating disks are fixedly connected to the upper and lower ends of the winding roller. The upper end of the left upper rotating disk penetrates through the housing and is fixedly connected to the output end of the motor, and the input end of the motor is electrically connected to the output end of an external control switch. The middle part of the motor is fixedly connected to the upper end of the bracket, and the lower end of the bracket is fixedly connected to the middle left side of the upper end of the housing. A card slot is opened on the outer side of the lower end of the winding roller, and the card post is clamped with the card slot. A through slot corresponding to the card slot is opened on the outer side of the middle part of the upper end of the lower rotating disk, and the stop post is threadedly connected to the inner side of the through slot. The outer side of the card post is fixedly connected to the inner end of the steel wire rope. The wire outlets are opened in the middle parts of the left and right ends of the housing, and the steel wire rope is located in the wire outlets;

[0009] Auxiliary unit: It is installed on the left and right sides of the winding roller.

[0010] The overall device is supported by the housing, the winding roller is supported by the rotating disk, the motor is supported by the bracket, the housing is fixed on the clothes hanger through the connecting bolts, the card post is clamped in the card slot, the stop post is threadedly connected to the through slot of the lower rotating disk, so as to prevent the card post from disengaging from the card slot. The other end of the steel wire rope passes through the wire outlet and is connected to both ends of the clothes drying rod. When it is necessary to lift or lower the clothes drying rod, the motor is started. The motor drives the gear to rotate, and through the meshing connection between the two gears, the rotating disk drives the winding roller to rotate, so that the steel wire rope winds around or disengages from the winding roller, and then the clothes drying rod rises or falls. The service life of the device is longer through the auxiliary unit.

[0011] Furthermore, the winding unit further includes a support column and a wire guiding hole. The rear ends of the support columns are fixedly connected to the middle parts of the left and right sides of the inner part of the housing, and the front ends of the support columns are fixedly connected to the wire guiding holes. The wire guiding holes correspond to the wire outlets. The wire guiding holes are supported by the support columns. The other end of the steel wire rope first passes through the wire guiding hole and then through the wire outlet. The steel wire rope is guided through the wire guiding hole, making the winding and unwinding of the steel wire rope more stable.

[0012] Furthermore, the auxiliary unit includes a mounting seat, a telescopic rod, a spring, a wire guiding hole for auxiliary use, and an anti-tangle component. The upper ends of the mounting seats are fixedly connected to the middle parts of the left and right sides of the inner top of the housing, and the upper ends of the telescopic rods are fixedly connected to the lower ends of the mounting seats. The spring is sleeved on the telescopic rod, and the lower ends of the telescopic rods are fixedly connected to the upper ends of another mounting seat. The lower end of another mounting seat is fixedly connected to the wire guiding hole for auxiliary use, and the steel wire rope is located in the wire guiding hole for auxiliary use.

[0013] Support the telescopic rod and the auxiliary wire hole through the mounting base, pass the steel wire rope through the auxiliary wire hole. When the steel wire rope is retracted and released, the anti-disorder component makes the steel wire rope evenly wound on the winding roller. At the same time, the contact point between the steel wire rope and the winding roller is constantly changing, and the angles between the lead hole, the winding roller and the steel wire rope are constantly changing. Thus, the auxiliary wire hole drives the telescopic rod and the spring to extend or contract. Through the elastic force of the spring, the angle change between the lead hole, the winding roller and the steel wire rope is smaller, thereby reducing the wear of the steel wire rope and increasing the service life.

[0014] Further, the anti-disorder component includes a fixed shaft, an arc plate, an inclined plate and a torsion spring. On the left and right sides of the middle part of the inner rear end of the housing, there are fixed shafts fixedly connected, and the fixed shafts are located between the winding rollers. The fixed shafts are rotationally connected to the rear ends of the winding rollers, and the arc plate is located outside the winding rollers. The outer end of the inclined plate is fixedly connected to the front end of the arc plate. One end of the torsion spring is fixedly connected to the middle part of the inner rear side of the winding roller, and the other end of the torsion spring is fixedly connected to the inner rear end of the housing.

[0015] Support the arc plate through the fixed shaft. When the steel wire rope is retracted and released, the inclined plate on the arc plate is always in contact with the steel wire rope through the elastic force of the torsion spring. The steel wire rope is evenly wound on the winding roller through the inclined plate, thus preventing the phenomenon of disorder when winding the steel wire rope.

[0016] Further, the auxiliary unit further includes a wear-resistant smooth strip. The rear end of the inclined plate is fixedly connected with the wear-resistant smooth strip, and the wear-resistant smooth strip is in contact with the winding roller. The wear of the steel wire rope is further reduced through the wear-resistant smooth strip.

[0017] Further, it also includes a chute and a cover plate. The inner front end of the housing is provided with a chute, and the upper and lower sides of the inner part of the chute are slidably connected with the upper and lower ends of the cover plate. The left end of the cover plate is clamped with the inner left end of the chute. When it is necessary to repair, maintain and replace the components inside the housing, separate the left end of the cover plate from the chute and slide it out along the chute, so as to expose the internal components, which is convenient for repair, maintenance and replacement.

[0018] Compared with the prior art, the beneficial effects of the present utility model are: The winding disc device in the intelligent clothes drying system of the present invention has the following advantages:

[0019] 1. When the steel wire rope is retracted and released, the inclined plate and the wear-resistant smooth strip on the arc plate are always in contact with the steel wire rope through the elastic force of the torsion spring. The steel wire rope is evenly wound on the winding roller through the inclined plate, and the wear of the steel wire rope is further reduced through the wear-resistant smooth strip;

[0020] 2. When the steel wire rope is retracted and extended, the contact point between the steel wire rope and the winding roller changes continuously, and the angles between the wire guiding hole, the winding roller and the steel wire rope also change continuously. As a result, the auxiliary wire hole drives the telescopic rod and the spring to extend or contract, and the elastic force of the spring makes the angle change between the wire guiding hole, the winding roller and the steel wire rope smaller.

[0021] 3. The steel wire rope is wound by driving the winding roller to rotate through a motor, which is convenient for visually inspecting the wear degree of the steel wire rope. And there is an anti-disorder component to prevent the phenomenon of chaos when winding the steel wire rope. In addition, there are an auxiliary wire hole and a wear-resistant smooth strip to reduce the wear of the steel wire rope and increase its service life. There is also a wire guiding hole to guide the steel wire rope, making the retraction and extension of the steel wire rope more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present utility model;

[0023] Figure 2 is a schematic bottom view structural view of the present utility model.

[0024] In the figure: 1 housing, 2 connecting bolts, 3 winding unit, 31 rotating disk, 32 winding roller, 33 gear, 34 bracket, 35 motor, 36 card slot, 37 card post, 38 stop post, 39 wire outlet, 310 steel wire rope, 311 support pillar, 312 wire guiding hole, 4 auxiliary unit, 41 mounting seat, 42 telescopic rod, 43 spring, 44 auxiliary wire hole, 45 fixed shaft, 46 arc plate, 47 inclined plate, 48 torsion spring, 49 wear-resistant smooth strip, 5 chute, 6 cover plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figure 1-2 , this embodiment provides a technical solution: a wire winding disc device in an intelligent clothes drying system, including a housing 1, a winding unit 3 and an auxiliary unit 4;

[0027] Housing 1: It is vertically placed as a hollow cuboid, and the four corners at the rear end inside the housing 1 are connected to the clothes drying rack through connecting bolts 2;

[0028] Wire winding unit 3: It includes a rotating disk 31, a wire winding roller 32, a gear 33, a bracket 34, a motor 35, a card slot 36, a card post 37, a stop post 38, a wire outlet 39 and a steel wire rope 310. The outer ends of the rotating disks 31 are rotatably connected to the middle parts of the upper and lower ends of the inside of the housing 1 on the left and right sides. The inner ends of the rotating disks 31 are fixedly connected to the upper and lower ends of the wire winding roller 32. The upper end of the left upper rotating disk 31 penetrates through the housing 1 and is fixedly connected to the output end of the motor 35. The input end of the motor 35 is electrically connected to the output end of an external control switch. The middle part of the motor 35 is fixedly connected to the upper end of the bracket 34, and the lower end of the bracket 34 is fixedly connected to the middle part of the upper end of the housing 1 on the left side. A card slot 36 is opened on the outer side of the lower end of the wire winding roller 32, and the card post 37 is clamped with the card slot 36. A through slot corresponding to the card slot 36 is opened on the outer side of the middle part of the upper end of the lower rotating disk 31, and the stop post 38 is threadedly connected to the inner side of the through slot. The outer side of the card post 37 is fixedly connected to the inner end of the steel wire rope 310. The wire outlets 39 are opened in the middle parts of the left and right ends of the housing 1, and the steel wire rope 310 is located in the wire outlets 39;

[0029] The wire winding unit 3 further includes a support column 311 and a wire leading hole 312. The rear ends of the support columns 311 are fixedly connected to the middle parts of the left and right sides of the inside of the housing 1, and the front ends of the support columns 311 are fixedly connected to the wire leading holes 312. The wire leading holes 312 correspond to the wire outlets 39. By supporting the wire leading holes 312 through the support columns 311, the other end of the steel wire rope 310 first passes through the wire leading holes 312 and then through the wire outlets 39. The wire leading holes 312 guide the steel wire rope 310, making the winding and unwinding of the steel wire rope 310 more stable.

[0030] Auxiliary unit 4: It is installed on the left and right sides of the wire winding roller 32; the auxiliary unit 4 includes a mounting seat 41, a telescopic rod 42, a spring 43, an auxiliary wire hole 44 and an anti-tangle component. The upper ends of the mounting seats 41 are fixedly connected to the middle parts of the left and right sides of the top inside of the housing 1. The lower ends of the mounting seats 41 are fixedly connected to the upper ends of the telescopic rods 42. The spring 43 is sleeved on the telescopic rods 42, and the lower ends of the telescopic rods 42 are fixedly connected to the upper ends of another mounting seat 41. The lower end of another mounting seat 41 is fixedly connected to the auxiliary wire hole 44, and the steel wire rope 310 is located in the auxiliary wire hole 44.

[0031] By supporting the telescopic rod 42 and the auxiliary wire hole 44 through the mounting seat 41, the steel wire rope 310 passes through the auxiliary wire hole 44. When the steel wire rope 310 is wound and unwound, the anti-tangle component makes the steel wire rope 310 evenly wound on the wire winding roller 32. At the same time, the contact point between the steel wire rope 310 and the wire winding roller 32 is constantly changing, and the angles between the wire leading holes 312 and the wire winding roller 32 and the steel wire rope 310 are constantly changing. Thus, the auxiliary wire hole 44 drives the telescopic rod 42 and the spring 43 to extend or contract. Through the elastic force of the spring 43, the angles between the wire leading holes 312 and the wire winding roller 32 and the steel wire rope 310 change less, thereby reducing the wear of the steel wire rope 310 and increasing its service life.

[0032] The anti-disorder component includes a fixed shaft 45, an arc-shaped plate 46, an inclined plate 47 and a torsion spring 48. On the left and right sides of the middle part of the inner rear end of the housing 1, there are fixedly connected with the fixed shaft 45, and the fixed shaft 45 is located between the winding rollers 32. The fixed shaft 45 is rotationally connected to the rear ends of the winding rollers 32, and the arc-shaped plate 46 is located outside the winding rollers 32. The outer end of the inclined plate 47 is fixedly connected to the front end of the arc-shaped plate 46. One end of the torsion spring 48 is fixedly connected to the middle part of the inner rear side of the winding roller 32, and the other end of the torsion spring 48 is fixedly connected to the inner rear end of the housing 1.

[0033] The arc-shaped plate 46 is supported by the fixed shaft 45. When the steel wire rope 310 is wound and unwound, the inclined plate 47 on the arc-shaped plate 46 is always in contact with the steel wire rope 310 through the elastic force of the torsion spring 48. The steel wire rope 310 is evenly wound on the winding roller 32 through the inclined plate 47, thereby preventing the phenomenon of disorder when the steel wire rope 310 is wound.

[0034] The auxiliary unit 4 further includes a wear-resistant smooth strip 49. The rear end of the inclined plate 47 is fixedly connected with the wear-resistant smooth strip 49, and the wear-resistant smooth strip 49 is in contact with the winding roller 32. The wear of the steel wire rope 310 is further reduced through the wear-resistant smooth strip 49.

[0035] The overall device is supported by the housing 1, the winding roller 32 is supported by the rotating disk 31, the motor 35 is supported by the bracket 34, the housing 1 is fixed on the clothes hanger through the connecting bolt 2, the clamping column 37 is clamped in the clamping groove 36, and the stop column 38 is threadedly connected in the through groove of the lower rotating disk 31, thereby preventing the clamping column 37 from disengaging from the clamping groove 36. The other end of the steel wire rope 310 passes through the wire outlet 39 and is connected to both ends of the clothes drying rod. When the clothes drying rod needs to be lifted or lowered, the motor 35 is started. The motor 35 drives the gear 33 to rotate. Through the meshing connection between the two gears 33, the rotating disk 31 drives the winding roller 32 to rotate, so that the steel wire rope 310 is wound around or disengaged from the winding roller 32, and further the clothes drying rod is lifted or lowered. The service life of the device is longer through the auxiliary unit 4.

[0036] It further includes a chute 5 and a cover plate 6. The chute 5 is opened inside the front end of the housing 1, and the upper and lower sides of the inside of the chute 5 are slidably connected with the upper and lower ends of the cover plate 6. The left end of the cover plate 6 is clamped with the left end of the inside of the chute 5. When the components inside the housing 1 need to be repaired, maintained and replaced, the left end of the cover plate 6 is disengaged from the chute 5 and slides out along the chute 5, thereby exposing the internal components and facilitating repair, maintenance and replacement.

[0037] The working principle of the wire reel device in an intelligent clothes drying system provided by the present utility model is as follows: The outer shell 1 is fixed on the clothes hanger through the connecting bolt 2. The left end of the cover plate 6 is disengaged from the sliding groove 5 and slides out along the sliding groove 5. The clamping column 37 is clamped in the clamping groove 36. The blocking column 38 is threadedly connected in the through hole of the lower rotating disk 31, thereby preventing the clamping column 37 from disengaging from the clamping groove 36. The other end of the steel wire rope 310 sequentially passes through the auxiliary wire hole 44, the wire guiding hole 312 and the wire outlet 39 and is connected to both ends of the clothes drying rod. The steel wire rope 310 is guided through the wire guiding hole 312 to make the winding and unwinding of the steel wire rope 310 more stable. The cover plate 6 is reset, and the motor 35 is started. The motor 35 drives the gear 33 to rotate. Through the meshing connection between the two gears 33, the rotating disk 31 drives the wire winding roller 32 to rotate, so that the steel wire rope 310 winds around or disengages from the wire winding roller 32, and further makes the clothes drying rod rise or fall. When the steel wire rope 310 is wound and unwound, through the elastic force of the torsion spring 48, the inclined plate 47 and the wear-resistant smooth strip 49 on the arc-shaped plate 46 are always in contact with the steel wire rope 310. Through the inclined plate 47, the steel wire rope 310 is evenly wound on the wire winding roller 32, thereby preventing the phenomenon of chaos when the steel wire rope 310 is wound. Through the wear-resistant smooth strip 49, the wear on the steel wire rope 310 is further reduced. At the same time, the contact point between the steel wire rope 310 and the wire winding roller 32 is constantly changing, and the angles between the wire guiding hole 312 and the wire winding roller 32 and the steel wire rope 310 are constantly changing. Thus, the auxiliary wire hole 44 drives the telescopic rod 42 and the spring 43 to extend or contract. Through the elastic force of the spring 43, the angle change between the wire guiding hole 312 and the wire winding roller 32 and the steel wire rope 310 is smaller, thereby reducing the wear of the steel wire rope 310 and increasing the service life.

[0038] It should be noted that in the above embodiments, the core chip of the external control switch group disclosed is a PLC single-chip microcomputer. The motor 35 can be freely configured according to the actual application scenario. It is recommended to select a servo motor for the motor 35. The external control switch group controls the operation of the motor 35 by using the commonly used methods in the prior art.

[0039] The above are only the embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied to other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A wire winding drum device in an intelligent clothes drying system, characterized in that: It comprises a housing (1), a winding unit (3) and an auxiliary unit (4); The outer shell (1) is in the form of a hollow rectangular parallelepiped placed vertically, and the four corners of the inner rear end of the outer shell (1) are connected to the clothes drying rack via connecting bolts (2); The winding unit (3) comprises a rotating disk (31), a winding roller (32), a gear (33), a bracket (34), a motor (35), a slot (36), a clamping column (37), a blocking column (38), a wire outlet (39) and a wire rope (310). The outer ends of the rotating disk (31) are rotatably connected to the left and right sides of the middle of the upper and lower ends of the housing (1), and the inner end of the rotating disk (31) is fixedly connected to the upper and lower ends of the winding roller (32). The upper end of the rotating disk (31) on the upper left side passes through the housing (1) and is fixedly connected to the output end of the motor (35). The input end of the motor (35) is electrically connected to the output end of the external control switch. The middle of the motor (35) is fixedly connected to the upper end of the bracket (34), and the lower end of the bracket (34) is fixedly connected to the left side of the middle of the upper end of the housing (1); a clamping groove (36) is provided on the outer side of the lower end of the winding roller (32), and the clamping column (37) is clamped with the clamping groove (36); a through groove corresponding to the clamping groove (36) is provided on the outer side of the middle of the upper end of the lower rotating disk (31), and the blocking column (38) is connected to the inner thread of the inner side of the through groove; the inner end of the steel wire rope (310) is fixedly connected to the outer side of the clamping column (37); and a wire outlet (39) is provided in the middle of the left and right ends of the housing (1), and the steel wire rope (310) is located in the wire outlet (39); Auxiliary unit (4): installed on the left and right sides of the winding roller (32).

2. The wire winding drum device in the intelligent clothes drying system according to claim 1, characterized in that: The winding unit (3) further comprises a support (311) and a lead hole (312); the rear end of the support (311) is fixedly connected to the middle of the left and right sides of the inner rear end of the housing (1); and the front end of the support (311) is fixedly connected to the lead hole (312); the lead hole (312) corresponds to the wire outlet (39).

3. The wire winding drum device in the intelligent clothes drying system according to claim 1, characterized in that: The auxiliary unit (4) comprises a mounting seat (41), a telescopic rod (42), a spring (43), an auxiliary wire hole (44) and an anti-disruption component. The upper end of the mounting seat (41) is fixedly connected to the left and right sides of the middle part of the inner top of the housing (1), and the lower end of the mounting seat (41) is fixedly connected to the upper end of the telescopic rod (42). The spring (43) is sleeved on the telescopic rod (42), and the lower end of the telescopic rod (42) is fixedly connected to the upper end of another mounting seat (41), and the lower end of the other mounting seat (41) is fixedly connected to the auxiliary wire hole (44), and the wire rope (310) is located in the auxiliary wire hole (44).

4. The wire winding drum device in the intelligent clothes drying system according to claim 3, characterized in that: The anti-tampering component comprises a fixed shaft (45), an arc plate (46), an inclined plate (47) and a torsion spring (48); the fixed shaft (45) is fixedly connected to the left and right sides of the middle part of the inner rear end of the housing (1); the fixed shaft (45) is located between the winding rollers (32); the fixed shaft (45) is rotatably connected to the rear end of the winding roller (32); the arc plate (46) is located outside the winding roller (32); the front end of the arc plate (46) is fixedly connected to the outer end of the inclined plate (47); one end of the torsion spring (48) is fixedly connected to the middle part of the inner rear side of the winding roller (32); and the other end of the torsion spring (48) is fixedly connected to the inner rear end of the housing (1).

5. The wire winding drum device in the intelligent clothes drying system according to claim 4, characterized in that: The auxiliary unit (4) further comprises a wear-resistant smooth strip (49), the rear end of the inclined plate (47) is fixedly connected to the wear-resistant smooth strip (49), and the wear-resistant smooth strip (49) is in contact with the winding roller (32).

6. The wire winding drum device in the intelligent clothes drying system according to claim 1, characterized in that: It also comprises a slide groove (5) and a cover plate (6), wherein the front end of the housing (1) is provided with a slide groove (5), and the upper and lower sides of the slide groove (5) are slidably connected to the upper and lower ends of the cover plate (6), and the left end of the cover plate (6) is clamped with the left end of the slide groove (5).

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