CN218176784U - Sunshade and roof connecting structure - Google Patents

Abstract

The utility model relates to an awning and covering or awning on a car, boat, etc. top connection structure, the loach carrying platform comprises a supporting fram, the support frame includes vertical roof beam, transverse beam and supporting leg, vertical roof beam with the mutual right angle of transverse beam is connected and is formed horizontal frame, vertical roof beam with the transverse beam junction is connected perpendicularly downwards the supporting leg still includes connecting piece and sunshading board, the sunshading board be rectangular shape and with transverse beam length phase-match, it is a plurality of the sunshading board is followed vertical roof beam direction is arranged in proper order and is covered vertical roof beam with the horizontal frame that transverse beam connects the formation, the sunshading board with the connecting piece is connected, through the rotation of connecting piece forms opening and shutting of sunshading board covers on the horizontal frame that vertical roof beam and transverse beam are constituteed, and the rotation of connecting piece drives the rotation of sunshading board, realizes opening and closing of covering or awning on a car, thereby reaches and whether to shelter from the opening and shutting of ultraviolet needs according to courtyard and outdoor activities, can be applicable to multiple scene.

Description

Sunshade and awning top connecting structure

Technical Field

The utility model relates to a sunshade articles for use field, in particular to sunshade and covering or awning on a car, boat, etc. top connection structure.

Background

In activities such as courtyard and outdoor dinner party, amusement, because sun shade or sunshade cap sunshade area are limited, often need the sunshade that area is bigger like this to shelter from, prevent that the ultraviolet ray from sunburning, but, when ultraviolet ray warm sum or use night need not shelter from the ultraviolet ray, the sunshade also can not appreciate the scenery in sky because the shielding of shed roof often can produce the sense of depression, current sunshade shed roof can not open and close, can't be applicable to the use of multiple scene.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide a sunshade that the roof can be opened and close.

The above technical object of the present invention can be achieved by the following technical solutions:

the utility model provides a sunshade, includes the support frame, the support frame includes vertical roof beam, transverse beam and supporting leg, vertical roof beam with the mutual right angle of transverse beam is connected and is formed horizontal frame, vertical roof beam with the transverse beam junction is connected perpendicularly downwards the supporting leg, vertical roof beam with transverse beam sets up at least two separately, the supporting leg sets up four at least, still includes connecting piece and sunshading board, the sunshading board be rectangular shape and with transverse beam length phase-match, a plurality of the sunshading board is followed vertical roof beam direction is arranged in proper order and is covered vertical roof beam with the horizontal frame that transverse beam connects the formation, the sunshading board with the connecting piece is connected, through the rotation of connecting piece forms opening and shutting of sunshading board.

Furthermore, a connecting column is arranged at the rear end of the connecting piece, a through hole is formed in the sun shield, and the connecting column penetrates through the through hole to form fixed connection between the connecting piece and the sun shield.

Furthermore, the rear portion of the sun shield is provided with a connecting portion, the front portion of the sun shield is provided with a shielding portion, the connecting portion and the shielding portion are upwards protruded, the plane where the top surfaces of all the protrusions of the sun shield are located is a horizontal plane, the rear end of the connecting portion is downwards sunken to form a groove, the through hole is formed in the position, close to the front side wall of the groove, of the connecting portion, a protruding hook-shaped strip is arranged on the lower side of the front end of the connecting portion, a pressing plate is arranged at the front end of the connecting portion, the pressing plate vertically extends, a connecting groove is formed between the upper portion of the connecting portion and the main body of the connecting portion, the hook-shaped strip is inserted into the connecting groove to form fixed connection, the pressing plate can be pressed by external force to enable the connecting groove to deform, and the connecting portion is made of plastic materials and is integrally arranged.

Further, connecting piece upper end middle part is provided with connecting hole one, the inboard vertical plane of vertical roof beam is provided with the screw hole, connecting hole one through the bolt with the inboard vertical plane swing joint of vertical roof beam, connecting piece lower extreme afterbody is provided with connecting hole two, the tandem bar be with vertical roof beam parallel arrangement's rectangular shape connecting strip, evenly set up on the tandem bar with connecting piece quantity assorted screw hole, the bolt passes through the screw hole of tandem bar with connecting hole two makes the connecting piece becomes swing joint with the tandem bar, the tandem bar series connection is a plurality of the connecting piece.

Furthermore, the most front end of the shielding part bends downwards to form a shielding edge, after the sun shield is closed, the shielding edge is attached to shield the rear wall of the groove in the adjacent sun shield in front, a water drainage groove is longitudinally formed below the inner side of the longitudinal beam, water in the groove drains into the water drainage groove after flowing out, the supporting leg is of a hollow structure, a water drainage hole is formed in the top end of the supporting leg in a penetrating mode, and the water drainage groove is communicated with the water drainage hole.

Further, the inboard fixed power device that is provided with of horizontal roof beam be connected with the axis of rotation on the power device, axis of rotation both sides tip an organic whole is provided with the rotation strip vertical roof beam tip inboard is provided with fixed connection's mounting, a mounting an organic whole is provided with the fixed axle, the axis of rotation cover is established the fixed axle surface rotates, activity strip one end with rotate a tip swing joint, the activity strip other end with establish ties a tip swing joint, activity strip middle part upwards stands out and forms crooked profile.

Further, power device set up to by the steering gear that worm and turbine constitute and can with steering gear detachable connections's hand lever, the turbine with the axis of rotation block, the turbine rotates the drive the corresponding rotation of axis of rotation.

Furthermore, the turbine is fixedly arranged in the middle of the inner side of the transverse beam, and the rotating shafts are correspondingly arranged to be two with equal left and right lengths.

Further, the sun shield comprises a sun shield body and a connecting piece, wherein a connecting column is arranged at the rear end of the connecting piece, a through hole is formed in the sun shield body, and the connecting column penetrates through the through hole to form the fixed connection between the connecting piece and the sun shield body.

Furthermore, the rear portion of the sun shield is provided with a connecting portion, the front portion of the sun shield is provided with a blocking portion, the joint of the connecting portion and the blocking portion protrudes upwards, the plane where the top surface of the protruding sun shield is located is a horizontal plane, the rear end of the connecting portion is recessed downwards to form a groove, the through hole is formed in the position, close to the upper portion, of the front side wall of the groove, a protruding hook-shaped strip is arranged on the lower side of the front end of the connecting portion, a pressing plate is arranged at the front end of the connecting portion, the pressing plate extends vertically, a connecting groove is formed between the upper portion of the connecting portion and the main body of the connecting portion, the hook-shaped strip is inserted into the connecting groove to form fixed connection, the pressing plate can be pressed by external force to enable the connecting groove to deform, and the connecting portion is made of plastic materials and is integrally arranged.

To sum up, the utility model discloses the beneficial effect who contrasts in prior art does: the sunshading board covers on the horizontal frame that vertical roof beam and horizontal roof beam are constituteed, forms the roof, can reach the effect of sunshade, and the rotation of connecting piece drives the rotation of sunshading board, realizes opening of roof to reach and whether shelter from the ultraviolet needs adjustment roof according to courtyard and outdoor activities and open and shut, can be applicable to multiple scene.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an enlarged top view of the support;

FIG. 3 is a partial enlarged view of the sun visor;

FIG. 4 is a second enlarged view of the sun visor;

FIG. 5 is a schematic view of a connector structure;

FIG. 6 is an enlarged partial view of the diverter;

FIG. 7 is a partial enlarged view showing the connection relationship between the rotating shaft and the serial bar;

FIG. 8 is an enlarged view of a portion of the connection between the sun visor and the attachment;

FIG. 9 is a partial enlarged view of the closed state of the embodiment;

FIG. 10 is a partial enlarged sectional view of the opened state of the embodiment.

Reference numerals:

1. a support frame; 11. a longitudinal beam; 111. a water discharge tank; 12. a transverse beam; 13. supporting legs; 131. a drain hole;

2. a hand lever;

3. a diverter; 31. a worm; 32. a turbine;

4. a rotating shaft; 41. rotating the strip; 42. a movable bar; 43. connecting the strips in series; 44. a fixed shaft; 45. a fixing member;

5. a connecting member; 51. a first connecting hole; 52. connecting holes II; 53. connecting columns; 54. connecting grooves; 55. a pressing plate;

6. a sun visor; 61. a connecting portion; 611. a groove; 612. a through hole; 613. a hook strip; 62. a shielding portion; 621. and (6) shading edges.

Detailed Description

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

The invention is described in further detail below with reference to the accompanying drawings:

a sunshade as shown in fig. 1 to 10, comprising a support frame 1, said support frame 1 comprising a longitudinal beam 11, a transverse beam 12 and support legs 13, said support frame 1 being used as a support structure to bear and connect other parts of the sunshade, said longitudinal beam 11 and said transverse beam 12 being connected with each other at right angles to form a horizontal frame, the connection between said longitudinal beam 11 and said transverse beam 12 being connected with said support legs 13 vertically downwards, said longitudinal beam 11 and said transverse beam 12 being at least two, said longitudinal beam 11 and said transverse beam 12 forming at least one rectangle, said support legs 13 being at least four, and further comprising a connecting member 5 and a connecting member 6, said sun visor 6 being in a strip shape and matching with the length of said transverse beam 12, when a plurality of said sun visors 6 are sequentially arranged along the direction of said longitudinal beam 11 to cover the horizontal frame formed by the connection between said longitudinal beam 11 and said transverse beam 12, the top of the support frame 1 being completely covered, said sun visor 6 being connected with said connecting member 5, the opening and closing of said sun visor 6 being formed by the rotation of said connecting member 5, the difference between the maximum angle of the opened sun visor 6 and the angle range of the rotatable connecting member 5 when the sun visor 6 is the sun visor.

Preferably, the longitudinal beams 11 are arranged in six, the transverse beams 12 are correspondingly arranged in six, the supporting legs 13 are arranged in six, the transverse beams on the outer sides of the two sides share the transverse beam in the middle, the longitudinal beams on the outer sides of the two sides share the longitudinal beam in the middle, and the supporting legs are arranged at four right angles and the joints of the two longitudinal beams.

In this embodiment, the rear end of the connecting piece 5 is provided with a connecting column 53, the sun visor 6 is provided with a through hole 612, and the connecting column 53 passes through the through hole 612 to form a fixed connection between the connecting piece 5 and the sun visor 6. The outer surface of the connecting column is fitted with the circular surface of the through hole to realize tight connection, and the length of the connecting column is greater than the thickness of the circular surface of the through hole to realize complete penetration.

In this embodiment, the rear portion of the sun visor 6 is provided with a connecting portion 61, the front portion of the sun visor 6 is provided with a shielding portion 62, the connecting portion 61 and the shielding portion 62 are protruded upward, the plane where the top surfaces of all the protrusions of the sun visor 6 are located is a horizontal plane, the horizontal arrangement enables all the components to bear even weight, which is beneficial to both the beauty and the balance of the durability of each component, the rear end of the connecting portion 61 is recessed downward to form a groove 611, the through hole 612 is arranged at a position above the front side wall of the groove 611, the lower side of the front end of the connecting portion 61 is provided with a protruding hook-shaped strip 613, the front end of the connecting member 5 is provided with a pressing plate 55, the pressing plate 55 extends vertically, a connecting groove 54 is formed between the upper portion and the main body of the connecting member 5, the hook-shaped strip 613 is inserted into the connecting groove 54 to form a fixed connection, the pressing plate 55 can be contacted and pressed by an external force to deform the connecting groove 54, and the connecting member 5 is an integrally formed plastic material.

Specifically, in a natural state, the hook-shaped hook strip 613 is clamped in the connecting groove 54 and cannot move, at this time, the connecting column 53 is connected with the through hole 612, the sun visor 6 and the connecting piece 5 form a stable connecting relationship to ensure the stability of movement, when disassembly or maintenance is required, the pressing plate 55 is pressed, the notch of the connecting groove 54 is enlarged under the plastic action, the hook strip 613 can be separated, and therefore the connecting column 53 can be reversely separated from the through hole 612, and therefore the sun visor 6 and the connecting piece 5 can be separated.

In this embodiment, connecting piece 5 upper end middle part is provided with connecting hole one 51, the inboard vertical plane of vertical roof beam 11 is provided with the screw hole, connecting hole one 51 through the bolt with the inboard vertical plane swing joint of vertical roof beam 11, 5 lower extreme afterbody of connecting piece are provided with connecting hole two 52, the tandem strip 43 be with the rectangular shape connecting strip of vertical roof beam 11 parallel arrangement, evenly set up on the tandem strip 43 with 5 quantity assorted screw holes of connecting piece, the bolt passes through the screw hole of tandem strip 43 with two 52 messenger of connecting hole connecting piece 5 forms swing joint with tandem strip 43, the tandem strip 43 series connection is a plurality of connecting piece 5. When the series-wound strips 43 move, all the connecting pieces 5 connected in series move at the same angle by taking the connecting hole two 52 at the lower part as the center, and meanwhile, the upper parts of the connecting pieces 5 also move by taking the connecting hole one 51 as the center, so that the fixedly connected sun shield 6 is driven to rotate, and finally the sun shield 6 is opened and closed.

In this embodiment, the most front end of the shielding portion 62 is bent downward to form a shielding edge 621, after the sun visor 6 is closed, the shielding edge 621 is attached to and shields the rear wall of the groove 611 on the adjacent front sun visor 6, so that water does not flow into the gap between the front and rear sun visors 6, a drainage groove 111 is longitudinally arranged below the inner side of the longitudinal beam 11, the water in the groove 611 flows out and then drains into the drainage groove 111, the support leg 13 is of a hollow structure, a drainage hole 131 is arranged at the top end of the support leg 13 in a penetrating manner, and the drainage groove 111 is communicated with the drainage hole 131. When precipitation occurs, the upward convex arrangement of the upper part of the sun shield 6 is provided with the downward bent shading edge 621, under the action of the slope, rainwater can be quickly and uniformly guided into the groove 611, then flows into the drainage groove 111 from the groove 611, and is drained away from the hollow supporting leg 13 through the drainage hole 131 by the drainage groove 111, so that the drainage efficiency is increased, and the rainwater is drained away from the internal structure of the awning, so that the attractiveness of the awning is improved to a certain extent.

In this embodiment, the inboard fixed power device that is provided with of horizontal roof beam 12 be connected with axis of rotation 4 on the power device, 4 both sides tip of axis of rotation an organic whole are provided with rotates strip 41 vertical roof beam 11 tip inboard is provided with fixed connection's mounting 45, the integrative fixed axle 44 that is provided with of mounting 45, axis of rotation 4 covers is established fixed axle 44 surface rotates, activity strip 42 one end with rotate strip 41 tip swing joint, the activity strip 42 other end with the connection strip 43 tip swing joint that concatenates, activity strip 42 middle part upwards stands out and forms crooked profile. When the sun shield 6 needs to be rotated, after the power device provides power, the rotating shaft rotates around the fixed shaft, the integrally-arranged rotating strips synchronously rotate, the rotating strips are movably connected with the movable strips, the movable strips are bent upwards, the series connection strips are straight, and the movable strips are movably connected with the series connection strips, so that the moving mode is that the rotating strips rotate along the axis to be converted into reciprocating horizontal motion along the direction of the series connection strips, and the connecting pieces and the longitudinal beam are movably connected, so that the sun shield can be opened and closed.

In this embodiment, the power device is provided with a steering gear 3 consisting of a worm 31 and a worm wheel 32 and a hand lever 2 which can be detachably connected with the steering gear 3, the worm wheel 32 is clamped with the rotating shaft 4, and the worm wheel 32 rotates to drive the rotating shaft 4 to correspondingly rotate. Specifically, the worm 31 is provided with a spiral thread, the worm wheel 32 is in a gear shape, the spiral thread is meshed with the gear, the rotation of the hand-operated lever 2 in the vertical direction is converted into the rotation in the horizontal direction, and the rotation shaft correspondingly rotates due to the clamping of the worm wheel and the rotation shaft.

Preferably, the engagement surfaces of the turbine and the rotating shaft are four flat surfaces.

In the present embodiment, the turbine 32 is fixedly disposed at the middle of the inner side of the transverse beam 12, and the rotating shafts 4 are respectively disposed at two equal left and right lengths. The turbine 32 sets up can compare in the middle part and set up the homogeneity that is favorable to power transmission more in other positions, extension spare part life cycle, and simultaneously, the isometric setting of both sides axis of rotation makes things convenient for batch production and nimble equipment, has reduced production and cost of transportation.

In another embodiment, the roof connecting structure comprises a sun visor 6 and a connecting piece 5, a connecting column 53 is arranged at the rear end of the connecting piece 5, the sun visor 6 is provided with a through hole 612, and the connecting column 53 penetrates through the through hole 612 to form a fixed connection between the connecting piece 5 and the sun visor 6. The outer surface of the connecting column is fitted with the circular surface of the through hole to realize tight connection, and the length of the connecting column is greater than the thickness of the circular surface of the through hole to realize complete penetration.

In this embodiment, the rear portion of the sun visor 6 is provided with a connecting portion 61, the front portion of the sun visor 6 is provided with a shielding portion 62, the connecting portion 61 and the shielding portion 62 are upwardly protruded, the plane of the top surface of all the protrusions of the sun visor 6 is a horizontal plane, the rear end of the connecting portion 61 is downwardly recessed to form a groove 611, the through hole 612 is provided at the upper position of the front side wall of the groove 611, the lower side of the front end of the connecting portion 61 is provided with a protruding hook strip 613, the front end of the connecting member 5 is provided with a pressing plate 55, the pressing plate 55 vertically extends, a connecting groove 54 is formed between the upper portion and the main body of the connecting member 5, the hook strip 613 is inserted into the connecting groove 54 to form a fixed connection, the pressing plate 55 can be contacted and pressed by external force to deform the connecting groove 54, and the connecting member 5 is an integrally formed plastic material.

Specifically, in a natural state, the hook-shaped hook strip 613 is clamped in the connecting groove 54 and cannot move, at this time, the connecting column 53 is connected with the through hole 612, the sun visor 6 and the connecting piece 5 form a stable connecting relationship to ensure the stability of movement, when disassembly or maintenance is required, the pressing plate 55 is pressed, the notch of the connecting groove 54 is enlarged under the plastic action, the hook strip 613 can be separated, and therefore the connecting column 53 can be reversely separated from the through hole 612, and therefore the sun visor 6 and the connecting piece 5 can be separated.

From the above description, it can be seen that the above-described embodiments achieve the following technical effects: when the sunshade is closed, the sunshade plate covers the horizontal frame, ultraviolet rays are blocked, the sunshade effect is achieved, when the sunshade needs to be opened, the connecting piece rotates to drive the sunshade plate to rotate, and the sunshade plate and the connecting piece move to achieve opening and closing of the awning top, so that the sunshade can be applied to different scenes, and the sunshade is more practical.

The above description is only an exemplary embodiment of the present invention, and is not intended to limit the scope of the present invention, which is defined by the appended claims.

Claims (10)

1. An awning, comprising a supporting frame (1), wherein the supporting frame (1) comprises a longitudinal beam (11), a transverse beam (12) and supporting legs (13), the longitudinal beam (11) and the transverse beam (12) are mutually connected at right angles to form a horizontal frame, the junction of the longitudinal beam (11) and the transverse beam (12) is downwards vertically connected with the supporting legs (13), at least two longitudinal beams (11) and at least four transverse beams (12) are respectively arranged, and the supporting legs (13) are at least four, characterized in that: still include connecting piece (5) and sunshading board (6), sunshading board (6) are rectangular shape and with horizontal roof beam (12) length phase-match, a plurality of sunshading board (6) are arranged in proper order along vertical roof beam (11) direction and are covered vertical roof beam (11) and the horizontal frame that horizontal roof beam (12) formed connects, sunshading board (6) with connecting piece (5) are connected, through the rotation of connecting piece (5) forms the opening and shutting of sunshading board (6).

2. A canopy according to claim 1, wherein: the rear end of the connecting piece (5) is provided with a connecting column (53), the sun shield (6) is provided with a through hole (612), and the connecting column (53) penetrates through the through hole (612) to form the fixed connection between the connecting piece (5) and the sun shield (6).

3. A canopy according to claim 2, wherein: the rear part of the sun shield (6) is provided with a connecting part (61), the front part of the sun shield (6) is provided with a shielding part (62), the connecting part (61) and the shielding part (62) are upwards protruded, the plane of the top surface of all the protrusions of the sun shield (6) is a horizontal plane, the rear end of the connecting part (61) is downwards sunken to form a groove (611), the through hole (612) is arranged at the position above the front side wall of the groove (611), the lower side of the front end of the connecting part (61) is provided with a protruding hook-shaped strip (613), the front end of the connecting part (5) is provided with a pressing plate (55), the pressing plate (55) vertically extends, a connecting groove (54) is formed between the upper part and the main body of the connecting part (5), the hook-shaped strip (613) is inserted into the connecting groove (54) to form a fixed connection, the pressing plate (55) can be contacted and pressed by external force to deform the connecting groove (54), and the connecting part (5) is made of a plastic material which is integrally arranged.

4. A canopy according to claim 3, wherein: connecting piece (5) upper end middle part is provided with connecting hole one (51), vertical roof beam (11) inboard vertical plane is provided with the screw hole, connecting hole one (51) through the bolt with vertical roof beam (11) inboard vertical plane swing joint, connecting piece (5) lower extreme afterbody is provided with connecting hole two (52), series connection strip (43) be with vertical roof beam (11) parallel arrangement's rectangular shape connecting strip, evenly set up on series connection strip (43) with connecting piece (5) quantity assorted screw hole, the bolt passes through the screw hole of series connection strip (43) with connecting hole two (52) make connecting piece (5) and series connection strip (43) form swing joint, series connection strip (43) series connection is a plurality of connecting piece (5).

5. A canopy according to claim 4, wherein: the shielding part (62) is bent downwards at the foremost end to form a shielding edge (621), after the sun visor (6) is closed, the shielding edge (621) is attached to shield the rear wall of the groove (611) on the adjacent front sun visor (6), a drainage groove (111) is longitudinally arranged below the inner side of the longitudinal beam (11), water in the groove (611) flows out and then is drained into the drainage groove (111), the supporting leg (13) is of a hollow structure, a drain hole (131) is formed in the top end of the supporting leg (13) in a penetrating mode, and the drainage groove (111) is communicated with the drain hole (131).

6. An awning as claimed in claim 5, wherein: transverse beam (12) inboard is fixed and is provided with power device is last to be connected with axis of rotation (4), axis of rotation (4) both sides tip an organic whole is provided with rotates strip (41) vertical roof beam (11) tip inboard is provided with fixed connection's mounting (45), mounting (45) an organic whole is provided with fixed axle (44), axis of rotation (4) cover is established fixed axle (44) surface rotates, activity strip (42) one end with rotate strip (41) tip swing joint, activity strip (42) other end with concatenation strip (43) tip swing joint, activity strip (42) middle part upwards stands out and forms crooked profile.

7. An awning as claimed in claim 6, wherein: the power device sets up to steering gear (3) and can with steering gear (3) detachable connections's hand rocker (2) by worm (31) and turbine (32) constitution, turbine (32) with axis of rotation (4) block, turbine (32) rotate the drive axis of rotation (4) corresponding rotation.

8. A canopy according to claim 7, wherein: the turbine (32) is fixedly arranged in the middle of the inner side of the transverse beam (12), and the rotating shafts (4) are correspondingly arranged to be two with the same length left and right.

9. The utility model provides a roof connection structure, includes sunshading board (6) and connecting piece (5), its characterized in that: the rear end of the connecting piece (5) is provided with a connecting column (53), the sun shield (6) is provided with a through hole (612), and the connecting column (53) penetrates through the through hole (612) to form the fixed connection between the connecting piece (5) and the sun shield (6).

10. The roof connecting structure according to claim 9, wherein: the rear part of the sun shield (6) is provided with a connecting part (61), the front part of the sun shield (6) is provided with a shielding part (62), the connecting part (61) and the shielding part (62) are upwards protruded, the plane of the top surface of all the protrusions of the sun shield (6) is a horizontal plane, the rear end of the connecting part (61) is downwards sunken to form a groove (611), the through hole (612) is arranged at the upper position of the front side wall of the groove (611), a protruding hook-shaped strip (613) is arranged at the lower side of the front end of the connecting part (61), a pressing plate (55) is arranged at the front end of the connecting part (5), the pressing plate (55) vertically extends, a connecting groove (54) is formed between the upper part and the main body of the connecting part (5), the hook-shaped strip (613) is inserted into the connecting groove (54) to form a fixed connection, the pressing plate (55) can be contacted and pressed by external force to deform the connecting groove (54), and the connecting part (5) is made of an integrally arranged plastic material.

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