Distribution box assembly with moisture-proof protection structure

Abstract

The invention discloses a distribution box assembly with a moisture-proof protection structure, and relates to the technical field of power distribution equipment. The shielding plate is arranged on the left side of the rotating frame, and an adjusting and positioning assembly is arranged on the upper side of the shielding plate. The operation box is arranged in the right side wall of the distribution box body in a penetrating manner, and a cooling fan is embedded in the left side of the operation box; the movable cover is arranged in a movable groove formed in the right side of the operation box, a convex groove is formed in the upper side of the movable groove in a penetrating mode, a boss is fixedly arranged on the upper side of the movable cover, and the boss is arranged in the convex groove in a hinged mode through a hinge shaft; the push-pull assembly is arranged in the operation box; the two box body positioning assemblies are respectively arranged on the right inner wall and the right outer wall of the distribution box body; the heat dissipation structures capable of being movably adjusted are additionally arranged on the left side and the right side of the power distribution box body, adjustment can be conducted at any time in cloudy and rainy days, rainwater and water vapor are prevented from entering the power distribution box body, and therefore better protection is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution equipment, and in particular to a power distribution box assembly with a moisture-proof protection structure. Background Art

[0002] The distribution box can reasonably distribute electrical energy and facilitate the opening and closing of the circuit. When the distribution box is actually used, a large amount of heat will be generated inside it. Therefore, a ventilation and heat dissipation structure will be set in the distribution box. However, the existing ventilation structure is open. On rainy days, rainwater enters the distribution box through the ventilation groove, which will easily make the inside of the distribution box damp, affecting the use of the line and causing a short circuit. Summary of the invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the prior art and to provide a distribution box assembly with a moisture-proof protection structure that is simple in structure, reasonably designed, and easy to use. By adding an adjustable heat dissipation structure on the left and right sides of the distribution box body, it can be adjusted at any time in rainy weather to prevent rainwater and water vapor from entering the interior of the distribution box body, thereby providing better protection.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is as follows: it comprises a distribution box body and a box door, wherein the box door is arranged on the front side of the distribution box body; a plurality of heat dissipation grooves are arranged on the left inner wall of the distribution box body at equal angles, a circular groove is arranged on the left outer wall of the distribution box body, and the circular groove and the heat dissipation groove are arranged in communication; a rotating frame is arranged in the circular groove, a rotating motor is fixedly arranged on the left inner wall of the distribution box body, and the rotating motor is arranged between the plurality of heat dissipation grooves, and the rotating motor is connected to an external power supply; the output group of the rotating motor passes through the left wall of the distribution box body and is connected to the rotating frame; It also contains: A shielding plate, wherein the shielding plate is arranged on the left side of the rotating frame, and an adjustment and positioning component is arranged on the upper side of the shielding plate; An operation box, wherein the operation box is arranged in the right side wall of the power distribution box body, and a cooling fan is embedded on the left side of the operation box; A movable cover is arranged in a movable groove on the right side of the operating box, a convex groove is provided on the upper side of the movable groove, a boss is fixedly provided on the upper side of the movable cover, and the boss is hingedly arranged in the convex groove through a hinge shaft; A push-pull assembly, wherein the push-pull assembly is arranged inside the operation box; Box positioning components, there are two box positioning components, which are respectively arranged on the right inner wall and the right outer wall of the distribution box; Through the above technical solution design, the operation box is installed inside the distribution box, and the operation box is positioned by the box positioning assembly; and the movable cover is opened by the push-pull assembly to put the interior of the operation box in a flowing state; at the same time, the operation baffle is flipped and positioned by adjusting the positioning assembly to expose the heat dissipation slot; thereby achieving the purpose of ventilation and heat dissipation.

[0005] As a further improvement of the present invention, the adjusting and positioning component comprises: A flip seat, wherein the flip seat is fixedly arranged on the left outer wall of the power distribution box body, and the flip seat is arranged on the upper side of the circular groove, and a flip motor is arranged on one side of the flip seat, and the flip motor is connected to an external power supply; after the output shaft of the flip motor passes through one side of the flip seat, it is passed through and fixed in the shielding plate; A positioning seat, which is arranged on the upper side of the flip seat and is fixed on the left outer wall of the distribution box; Positioning motors, there are two positioning motors, which are respectively fixed on the outer walls of the horizontal ends of the front and rear sides of the positioning seat, and the positioning motors are connected to an external power supply; after the output shaft of the positioning motor passes through the horizontal end of the positioning seat, a threaded rod is provided, and a threaded tube is provided on the threaded rod through a threaded screw sleeve, and the threaded tube is slidably arranged with the positioning seat through a sliding pair; Through the above technical solution design, the flip motor drives the shielding plate to rotate and change its state. When the shielding plate rotates to cover the circular groove, rainwater is blocked; when the shielding plate rotates away from the circular groove, the rotating frame rotates to put the heat dissipation groove in a ventilated state.

[0006] As a further improvement of the present invention, the push-pull assembly comprises: A push-pull motor, wherein the push-pull motor is fixedly arranged on the inner wall of the rear side of the operation box; the push-pull motor is connected to an external power supply; a rotating part is fixedly arranged on the output end of the push-pull motor; A connecting member, wherein the connecting member is hingedly arranged on the front side of the rotating member through a hinge shaft; A connecting block, wherein the connecting block is fixedly arranged on the left side wall of the movable cover, and the other end of the connecting piece is hingedly arranged on the rear side of the connecting block through a hinge shaft; Through the above technical solution design, the movable cover is driven to rotate around the hinge center on the upper side to achieve the purpose of opening and closing.

[0007] As a further improvement of the present invention, a bottom bracket is fixedly arranged on the right inner wall of the operation box, and the bottom bracket is arranged on the lower side of the movable groove; Through the above technical solution design, the movable cover is limited and rainwater is blocked.

[0008] As a further improvement of the present invention, the box positioning assembly comprises: The drive frame is an inverted U-shaped structure, and the drive frame is arranged on the upper side of the operation box; teeth are arranged on the outer walls of the vertical ends of the front and rear sides of the drive frame; the lateral end of the drive frame is slidably arranged on the side wall of the distribution box through a sliding pair; The driving motors are two in number and are fixed on the side walls of the power distribution box body in a front and rear relative manner. The driving motors are connected to an external power source. A driving gear is provided on the output end of the driving motor, and the driving gear is meshed with the outer side of the teeth of the driving frame. An insert block, wherein the insert block is fixedly arranged on the inner top surface of the driving frame, and the bottom of the insert block is inserted into the limiting groove on the upper side of the operating box; Through the above technical solution design, the insert block is driven to be inserted downward into the operating box to enhance its stability.

[0009] As a further improvement of the present invention, a support frame is fixedly arranged on the right inner wall of the distribution box body, and the operation box is contact-arranged in the support frame; Through the above technical solution design, the operation box is supported and positioned.

[0010] The working principle of the present invention is as follows: in normal weather, the rotating motor drives the rotating frame to rotate, so that the heat dissipation groove and the circular groove are connected, the flip motor is turned on, the shielding plate is rotated away from the circular groove, and the positioning motors on the front and rear sides are started to rotate the threaded rod and move the threaded tube through the thread drive until the threaded tube is tightly inserted into the shielding plate, so that the left side of the distribution box body is in a state of air circulation; at the same time, the push-pull motor is started to rotate the rotating part to drive the connecting part, so that the movable cover rotates around the hinge center on the upper side and is in an open state, so that the interior of the operating box is in a state of circulation, so that the left and right sides of the distribution box body are connected, and air circulation is performed to dissipate heat; When encountering rainy weather, in addition to starting the rotating motor to drive the rotating frame to cover the heat dissipation slot, it is also necessary to make the positioning motor rotate in the opposite direction to move the threaded pipe out of the shielding plate, and use the flipping motor to rotate the shielding plate to cover the circular groove, and block the rain on the left side of the distribution box to prevent rainwater from entering the heat dissipation slot from the circular groove; the push-pull motor drives the movable cover to be closed, and limits it through the bottom bracket to prevent the movable cover from excessive movement and causing rainwater to enter the operation box.

[0011] After adopting the above structure, the beneficial effects of the present invention are: 1. In addition to the cover of the heat dissipation slot by the rotating frame, the shielding plate is also used to block rainwater, thereby preventing rainwater from entering the distribution box from the circular slot, making the left side of the distribution box moisture-proof; 2. When the movable cover is closed, the bottom support is used to limit the position, so that rainwater cannot enter the operation box from the movable groove, making the right side of the distribution box moisture-proof and not affecting the use of the cooling fan; 3. The operation box is installed and fixed on the right side of the distribution box by plugging two plug-ins. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a structural schematic diagram of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal structure of the power distribution box in the present invention.

[0015] Figure 3 yes Figure 2 Schematic diagram of the southeast isometric structure.

[0016] Figure 4 It is a structural schematic diagram of the operation box in the present invention.

[0017] Figure 5 It is a structural schematic diagram of the connection between the movable cover and the operating box in the present invention.

[0018] Figure 6 It is a structural schematic diagram of the box positioning component in the present invention.

[0019] Figure 7 It is a structural schematic diagram of a specific implementation method in which the shielding plate is in an open state away from the circular groove.

[0020] Figure 8 yes Figure 7 Enlarged view of part A.

[0021] Description of reference numerals: Distribution box 1, heat dissipation groove 1-1, circular groove 1-2, box door 2, rotating frame 3, rotating motor 4, baffle 5, adjustment and positioning assembly 6, flip seat 6-1, flip motor 6-2, positioning seat 6-3, positioning motor 6-4, threaded rod 6-5, threaded tube 6-6, operation box 7, movable groove 7-1, convex groove 7-2, limit groove 7-3, cooling fan 8, movable cover 9, boss 10, push-pull assembly 11, push-pull motor 11-1, rotating part 11-2, connecting part 11-3, connecting block 11-4, box positioning assembly 12, drive frame 12-1, drive motor 12-2, drive gear 12-3, plug block 12-4, bottom bracket 13, support frame 14. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Embodiment 1:

[0024] See also Figure 1-Figure 8 , this embodiment comprises a distribution box body 1 and a box door 2, wherein the box door 2 is arranged on the front side of the distribution box body 1; a plurality of heat dissipation grooves 1-1 are arranged on the inner wall of the left side of the distribution box body 1 at equal angles, a circular groove 1-2 is arranged on the outer wall of the left side of the distribution box body 1, and the circular groove 1-2 is arranged in communication with the heat dissipation groove 1-1; a rotating frame 3 is arranged in the circular groove 1-2, a rotating motor 4 is fixedly arranged on the inner wall of the left side of the distribution box body 1, and the rotating motor 4 is arranged between the plurality of heat dissipation grooves 1-1, and the rotating motor 4 is connected to an external power supply; the output group of the rotating motor 4 passes through the left side wall of the distribution box body 1 and is connected to the rotating frame 3; It also contains: A shielding plate 5, wherein the shielding plate 5 is arranged on the left side of the rotating frame 3, and an adjustment and positioning component 6 is arranged on the upper side of the shielding plate 5; An operation box 7 is provided in the right side wall of the power distribution box 1, and a cooling fan 8 is embedded in the left side of the operation box 7; a support frame 14 is fixedly provided on the right inner wall of the power distribution box 1, and the operation box 7 is contact-disposed in the support frame 14; A movable cover 9 is arranged in a movable groove 7-1 on the right side of the operation box 7, a convex groove 7-2 is provided on the upper side of the movable groove 7-1, a boss 10 is fixedly provided on the upper side of the movable cover 9, and the boss 10 is hingedly arranged in the convex groove 7-2 through a hinge shaft; A push-pull assembly 11, wherein the push-pull assembly 11 is arranged inside the operation box 7; Box positioning components 12, there are two box positioning components 12, which are respectively arranged on the right inner wall and the right outer wall of the distribution box 1; With the above-mentioned design, the operating box 7 is installed inside the distribution box 1, and is positioned by the box positioning assembly 12; and the movable cover 9 is opened by the push-pull assembly 11, so that the interior of the operating box 7 is in a flowing state; at the same time, the operating baffle plate 5 is flipped over and positioned by adjusting the positioning assembly 6, so that the heat dissipation slot 1-1 is exposed; thereby achieving the purpose of ventilation and heat dissipation.

[0025] Embodiment 2:

[0026] See also Figure 1-Figure 8 , further improved on the basis of Example 1, the adjusting and positioning component 6 comprises: The flip seat 6-1 is fixedly arranged on the left outer wall of the power distribution box 1, and the flip seat 6-1 is arranged on the upper side of the circular groove 1-2. A flip motor 6-2 is arranged on one side of the flip seat 6-1, and the flip motor 6-2 is connected to an external power supply. The specific use model of the flip motor 6-2 is directly purchased and installed from the market according to actual use requirements and used; the output shaft of the flip motor 6-2 passes through one side of the flip seat 6-1, and then is passed through and fixed in the shielding plate 5; A positioning seat 6-3, wherein the positioning seat 6-3 is arranged on the upper side of the flip seat 6-1, and the positioning seat 6-3 is fixed on the left outer wall of the distribution box body 1; Positioning motor 6-4, there are two positioning motors 6-4, which are respectively fixed on the outer walls of the horizontal ends of the front and rear sides of the positioning seat 6-3, and the positioning motor 6-4 is connected to an external power supply. The specific use model of the positioning motor 6-4 is directly purchased and installed from the market according to actual use requirements and used; after the output shaft of the positioning motor 6-4 passes through the horizontal end of the positioning seat 6-3, a threaded rod 6-5 is provided, and a threaded tube 6-6 is provided on the threaded rod 6-5 through a threaded screw sleeve, and the threaded tube 6-6 is slidably set with the positioning seat 6-3 through a sliding pair; With the above design, the flip motor 6-2 drives the shielding plate 5 to rotate and change its state. When the shielding plate 5 rotates to cover the circular groove 1-2, rainwater is blocked; when the shielding plate 5 rotates away from the circular groove 1-2, the rotating frame 3 rotates to put the heat dissipation groove 1-1 in a ventilation state.

[0027] Embodiment 3:

[0028] See also Figure 1-Figure 8 , further improved on the basis of Example 1, the push-pull assembly 11 comprises: A push-pull motor 11-1, wherein the push-pull motor 11-1 is fixedly arranged on the inner wall of the rear side of the operation box 7; the push-pull motor 11-1 is connected to an external power supply, and the specific use model of the push-pull motor 11-1 is directly purchased, installed and used from the market according to actual use requirements; a rotating member 11-2 is fixedly arranged on the output end of the push-pull motor 11-1; A connecting member 11-3, wherein the connecting member 11-3 is hingedly arranged on the front side of the rotating member 11-2 via a hinge shaft; A connecting block 11-4, wherein the connecting block 11-4 is fixedly disposed on the left side wall of the movable cover 9, and the other end of the connecting member 11-3 is hingedly disposed on the rear side of the connecting block 11-4 through a hinge shaft; A bottom bracket 13 is fixedly arranged on the right inner wall of the operation box 7, and the bottom bracket 13 is arranged on the lower side of the movable groove 7-1; By adopting the above design, the movable cover 9 is driven to rotate around the hinge center on the upper side to achieve the purpose of opening and closing; and the bottom bracket 13 limits the movable cover 9 and blocks rainwater.

[0029] Embodiment 4:

[0030] See also Figure 1-Figure 8 , further improved on the basis of Example 1, the box positioning component 12 comprises: The drive frame 12-1 is an inverted U-shaped structure, and the drive frame 12-1 is arranged on the upper side of the operation box 7; teeth are arranged on the outer walls of the vertical ends of the front and rear sides of the drive frame 12-1; the lateral end of the drive frame 12-1 is slidably arranged on the side wall of the distribution box body 1 through a sliding pair; The driving motor 12-2 is two in number and is relatively fixed on the side wall of the power distribution box 1 at the front and rear sides. The driving motor 12-2 is connected to an external power source. The specific model of the driving motor 12-2 is purchased and installed directly from the market according to actual use requirements and used. A driving gear 12-3 is provided at the output end of the driving motor 12-2, and the driving gear 12-3 is meshed and provided on the outer side of the teeth of the driving frame 12-1. Insert block 12-4, the insert block 12-4 is fixedly arranged on the inner top surface of the driving frame 12-1, and the bottom of the insert block 12-4 is inserted into the limiting groove 7-3 on the upper side of the operation box 7; By adopting the above design scheme, the insert block 12-4 is driven to be inserted downward into the operating box 7 to enhance its stability.

[0031] When the present invention is used, in normal weather, the rotating motor 4 drives the rotating frame 3 to rotate, so that the heat dissipation groove 1-1 is connected with the circular groove 1-2, and the flip motor 6-2 is turned on to rotate the shielding plate 5 away from the circular groove 1-2, and by starting the positioning motors 6-4 on the front and rear sides, the threaded rod 6-5 is rotated and the threaded tube 6-6 is moved by thread drive until the threaded tube 6-6 is tightly inserted into the shielding plate 5, so that the left side of the distribution box body 1 can be in a state of air circulation; at the same time, the push-pull motor 11-1 is started to rotate the rotating member 11-2 to drive the connecting member 11-3, so that the movable cover 9 rotates around the hinge center on the upper side and is in an open state, so that the interior of the operating box 7 is in a state of circulation, so that the left and right sides of the distribution box body 1 are connected, and air circulation is allowed to dissipate heat; When encountering rainy weather, in addition to starting the rotating motor 4 to drive the rotating frame 3 to shield the heat dissipation slot 1-1, it is also necessary to rotate the positioning motor 6-4 in the opposite direction to move the threaded tube 6-6 out of the baffle plate 5, and rotate the baffle plate 5 through the flipping motor 6-2 to shield the circular slot 1-2, and shield the rainwater on the left side of the distribution box to prevent rainwater from entering the heat dissipation slot 1-1 from the circular slot 1-2; the push-pull motor 11-1 drives the movable cover 9 to be in a closed state, and limits it through the bottom support 13 to prevent the movable cover 9 from excessive movement and causing rainwater to enter the operating box 7.

[0032] After adopting the above structure, the beneficial effects of this specific implementation are: 1. In addition to the covering of the heat dissipation slot 1-1 by the rotating frame 3, the shielding plate 5 is also used to shield rainwater, thereby preventing rainwater from entering the distribution box 1 from the circular slot 1-2, so that the left side of the distribution box 1 is moisture-proof; 2. When the movable cover 9 is closed, the bottom bracket 13 is used to limit the position, so that rainwater cannot enter the operating box 7 from the movable groove 7-1, so that the right side of the distribution box body 1 is moisture-proof and does not affect the use of the cooling fan 8; 3. The operation box 7 is installed and fixed on the right side of the distribution box body 1 by plugging in two plug-in blocks 12 - 4 .

[0033] The above description is only used to illustrate the technical solution of the present invention rather than to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A distribution box assembly with a moisture-proof protection structure, comprising a distribution box body (1) and a box door (2), wherein the box door (2) is arranged on the front side of the distribution box body (1); a plurality of heat dissipation grooves (1-1) are arranged on the left inner wall of the distribution box body (1) at equal angles around the circumference, a circular groove (1-2) is arranged on the left outer wall of the distribution box body (1), and the circular groove (1-2) and the heat dissipation groove (1-1) are arranged in a connected manner; a rotating frame (3) is arranged in the circular groove (1-2), a rotating motor (4) is fixedly arranged on the left inner wall of the distribution box body (1), and the rotating motor (4) is arranged between the plurality of heat dissipation grooves (1-1), and the rotating motor (4) is connected to an external power source; an output group of the rotating motor (4) passes through the left wall of the distribution box body (1) and is connected to the rotating frame (3); It is characterized in that It also contains: A shielding plate (5), wherein the shielding plate (5) is arranged on the left side of the rotating frame (3), and an adjustment and positioning component (6) is arranged on the upper side of the shielding plate (5); An operating box (7), wherein the operating box (7) is disposed in the right side wall of the power distribution box (1), and a cooling fan (8) is embedded on the left side of the operating box (7); A movable cover (9), the movable cover (9) being arranged in a movable groove (7-1) provided on the right side of the operating box (7), a convex groove (7-2) being provided through the upper side of the movable groove (7-1), a boss (10) being fixedly provided on the upper side of the movable cover (9), and the boss (10) being hingedly provided in the convex groove (7-2) via a hinge shaft; A push-pull assembly (11), wherein the push-pull assembly (11) is arranged inside the operation box (7); Box body positioning components (12), there are two box body positioning components (12), which are respectively arranged on the right inner wall and the right outer wall of the distribution box body (1).

2. A distribution box assembly with a moisture-proof protection structure according to claim 1, characterized in that: The adjusting and positioning component (6) comprises: A flip seat (6-1), wherein the flip seat (6-1) is fixedly arranged on the left outer wall of the power distribution box (1), and the flip seat (6-1) is arranged on the upper side of the circular groove (1-2); a flip motor (6-2) is arranged on one side of the flip seat (6-1), and the flip motor (6-2) is connected to an external power supply; the output shaft of the flip motor (6-2) passes through one side of the flip seat (6-1), and then passes through and is fixed in the shielding plate (5); A positioning seat (6-3), wherein the positioning seat (6-3) is arranged on the upper side of the flip seat (6-1), and the positioning seat (6-3) is fixed on the left outer wall of the distribution box (1); A positioning motor (6-4), wherein the positioning motor (6-4) is two and is respectively fixed on the outer walls of the horizontal ends of the front and rear sides of the positioning seat (6-3), and the positioning motor (6-4) is connected to an external power supply; after the output shaft of the positioning motor (6-4) passes through the horizontal end of the positioning seat (6-3), a threaded rod (6-5) is provided, and a threaded tube (6-6) is provided on the threaded rod (6-5) through a threaded screw sleeve, and the threaded tube (6-6) is slidably arranged with the positioning seat (6-3) through a sliding pair.

3. The distribution box assembly with moisture-proof protection structure according to claim 1, characterized in that: The push-pull assembly (11) comprises: A push-pull motor (11-1), wherein the push-pull motor (11-1) is fixedly arranged on the rear inner wall of the operation box (7); the push-pull motor (11-1) is connected to an external power supply; a rotating member (11-2) is fixedly arranged on the output end of the push-pull motor (11-1); A connecting member (11-3), wherein the connecting member (11-3) is hingedly arranged on the front side of the rotating member (11-2) via a hinge shaft; A connecting block (11-4) is fixedly arranged on the left side wall of the movable cover (9), and the other end of the connecting piece (11-3) is hingedly arranged on the rear side of the connecting block (11-4) via a hinge shaft.

4. The distribution box assembly with moisture-proof protection structure according to claim 3, characterized in that: A bottom bracket (13) is fixedly arranged on the right inner wall of the operation box (7), and the bottom bracket (13) is arranged on the lower side of the movable groove (7-1).

5. The distribution box assembly with moisture-proof protection structure according to claim 1, characterized in that: The box positioning assembly (12) comprises: A drive frame (12-1), wherein the drive frame (12-1) is an inverted U-shaped structure, and the drive frame (12-1) is arranged on the upper side of the operation box (7); teeth are arranged on the outer walls of the vertical ends of the front and rear sides of the drive frame (12-1); and the lateral end of the drive frame (12-1) is slidably arranged on the side wall of the distribution box body (1) through a sliding pair; A driving motor (12-2), wherein the driving motor (12-2) is two and is fixed on the side wall of the power distribution box (1) in a front and rear relative manner, and the driving motor (12-2) is connected to an external power source; a driving gear (12-3) is arranged on the output end of the driving motor (12-2), and the driving gear (12-3) is meshed with the outer side of the teeth of the driving frame (12-1); An insert block (12-4) is fixedly arranged on the inner top surface of the driving frame (12-1), and the bottom of the insert block (12-4) is inserted into a limiting groove (7-3) on the upper side of the operating box (7).

6. The distribution box assembly with moisture-proof protection structure according to claim 1, characterized in that: A support frame (14) is fixedly arranged on the right inner wall of the power distribution box body (1), and the operation box (7) is arranged in contact with the support frame (14).

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