Connecting piece for mounting energy-saving partition board and mounting method

Abstract

The invention relates to the technical field of constructional engineering assembly, and discloses an energy-saving partition board mounting connector and a mounting method.The energy-saving partition board mounting connector comprises a keel frame, a partition board is movably arranged on the side face of the keel frame, a sliding seat is slidably connected into the keel frame, and an insertion sleeve is fixedly connected to the surface of the sliding seat; four contact plates are rotationally connected to the end, away from the sliding seat, of the plug bush, the four contact plates are annularly arranged, guide strips are fixedly connected to the inner surfaces of the contact plates, a mounting ring is fixedly connected to the outer wall of the plug bush, and limiting pieces are fixedly mounted in the middle of the mounting ring and at the end, away from the plug bush, of the mounting ring correspondingly; a first spring is arranged between the two limiting pieces, the first spring is movably connected to the mounting ring in a sleeving mode, through the arranged contact plate, an operator can conveniently and smoothly penetrate the inserting rod into the inserting sleeve, the operator does not need to observe the inserting rod sideways and align the inserting rod to the hole position, and the partition wall board can be more conveniently and rapidly mounted.

Description

Technical Field

[0001] The invention relates to the technical field of building engineering assembly, in particular to a connector for installing an energy-saving partition board and an installation method. Background Art

[0002] Energy-saving partition boards are prefabricated materials used for the interior or exterior walls of buildings. They are mainly used to separate spaces, provide privacy, and improve the sound insulation and heat insulation performance of buildings. Energy-saving partition boards can be widely used in residential, commercial and industrial buildings. They are favored for their convenient construction, light weight and superior performance.

[0003] In the existing partition board installation technology, when two partition boards are connected together, the operator is required to observe the flatness and spacing of the partition board connection sideways. When the operator observes sideways and adjusts the position of one of the partition boards, as the partition boards are continuously arranged, the observation space will gradually become smaller, making it increasingly inconvenient to observe the flatness of the partition boards, resulting in limited observation space and inconvenience in the installation of the partition boards. Therefore, it is necessary to improve it. Summary of the invention

[0004] The purpose of the present invention is to provide a connector and installation method for energy-saving partition wall panels, so as to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: including a keel frame, a partition wall panel is movably arranged on the side of the keel frame, a sliding seat is slidably connected inside the keel frame, a plug sleeve is fixedly connected to the surface of the sliding seat, and four contact plates are rotatably connected to the end of the plug sleeve away from the sliding seat. The four contact plates are arranged in an annular shape, and the inner surface of the contact plate is fixedly connected to a guide bar, and a mounting ring is fixedly connected to the outer wall of the plug sleeve, and the middle part of the mounting ring and the end away from the plug sleeve are respectively fixedly installed with limit plates, and a spring 1 is arranged between the two limit plates, and the spring 1 is movably sleeved on the mounting ring;

[0005] The outer surface of the contact plate is fixedly connected with a connecting plate, the top of the connecting plate is sleeved and installed on the mounting ring, a spring sheet is fixedly installed inside one end of the contact plate, a triangular block is arranged on the top of the spring sheet, and the triangular block is slidably connected with the contact plate.

[0006] Preferably, a locking head is slidably connected to the four sides of the plug sleeve, a spring 2 is fixedly connected to one side of the locking head, an end of the spring 2 away from the locking head is fixedly connected to the plug sleeve, and the locking head abuts against the connecting plate.

[0007] Preferably, a side of the partition board close to the keel frame is fixedly connected with a plurality of sleeves, the sleeves are arranged equidistantly, an insert rod is fixedly connected inside the sleeve, four limiting holes are penetrated on the outer wall of the sleeve, and four guide grooves are opened on the insert rod.

[0008] Preferably, the number and positions of the limiting holes are adapted to the triangular block, the number and positions of the guide grooves are adapted to the guide bar, the length of the limiting holes is greater than the length of the triangular block, and the length of the guide grooves is greater than the length of the guide bar.

[0009] Preferably, the top and bottom of the slide seat are slidably connected with sliders, and the ends of the two sliders close to each other are rotatably connected with a mounting plate, a sleeve is provided inside the socket, and the left and right ends of the sleeve are fixedly connected with side plates, the top and bottom of the side plates are respectively rotatably connected with the mounting plate, and two through grooves are symmetrically provided on the sleeve.

[0010] Preferably, a spring three is fixedly connected to the middle of the slide seat, locking plates are fixedly connected to both sides of the slide seat close to the spring three, a cavity is opened inside the sleeve, and teeth are fixedly connected to the ends of the two sliders away from each other, and the teeth are in active contact with the inner wall of the keel frame.

[0011] Preferably, the inner surface of the contact plate is configured to be arc-shaped for tightly fitting with the outer wall of the insertion rod, and the outer edge of one end of the contact plate close to the insertion rod is configured to be rounded for smoothly passing into the interior of the sleeve.

[0012] Preferably, the tooth pieces are made of rubber material, and are used to fit tightly with the inner wall of the keel frame, so as to facilitate the fixing of the partition board.

[0013] Preferably, a method for installing a connector for installing an energy-saving partition wall panel comprises the following steps:

[0014] S1: First, the operator installs three keel frames at equal distances in the construction area. During installation, a corresponding number of slides are set on the keel frames according to the number of partition boards to be installed. Each partition board has six slides set on the keel frame. The operator first slides two adjacent slides on each keel frame to one side. The distance between the two slides corresponds to the distance between the two plug rods on the partition board. Then, the side of the partition board with the plug rod facing the keel frame, the partition board is pushed toward the keel frame, and each plug rod is inserted from the opening at the front end of the plug sleeve. Insert it into the plug sleeve, during which the four contact plates are triggered to swing inward and retract. When the contact plate swings, it drives the connecting plate to compress the spring 1. When the connecting plate passes under the locking head, it contacts it and pushes the locking head upward, so that the spring 2 is compressed. When the connecting plate completely passes under the locking head, the locking head is reset and the connecting plate is pressed against by the force of the spring 2, so that the positions of the four contact plates are locked and the insertion rod is completely wrapped. When the contact plate wraps the insertion rod, the guide strip installed on the inner surface of the contact plate is stuck in the guide groove on the insertion rod;

[0015] S2: After the contact plate completely wraps around the insertion rod, the four contact plates close to one end of the partition board enter the interior of the sleeve. During this process, the edge of the sleeve presses down the four triangular blocks, causing one side of the spring sheet to deform. Then the top of the triangular block passes through the limit hole on the sleeve, and the spring sheet is reset. At this time, the preliminary installation operation of the partition board is completed, and the partition board is slid on the keel frame to adjust the spacing between each partition board;

[0016] S3: After adjusting the spacing between the partition boards, continue to push the partition boards toward the keel frame. The end of the insertion rod contacts the sleeve and pushes the sleeve toward the sliding seat, compressing spring three. During the movement of the sleeve toward the sliding seat, the side panels installed on both sides of the sleeve drive the mounting plate to move synchronously. During the contact between the end of the sleeve facing the sliding seat and the surface of the sliding seat, the locking plate is inserted into the interior of the sleeve and passes through the through groove. The top end of the mounting plate at the top is raised and the bottom end of the mounting plate at the bottom is lowered, causing the two sliders to slide toward the top and bottom respectively. The two teeth contact the inner surface of the keel frame and press against the inner side of the keel frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, the contact plate is provided, and during the process of inserting the rod into the plug sleeve, the contact plate gradually wraps the rod, and the guide bar on the contact plate is embedded in the guide groove. When the rod is almost completely wrapped, the connecting plate pushes the locking head open, and then the locking head is reset to block the connecting plate, so that the inner surfaces of the four contact plates fit the outer surface of the rod, and the rod is tightly wrapped. By setting the opening of the plug sleeve to be trumpet-shaped, it is convenient for the operator to smoothly insert the rod into the plug sleeve, without the need to observe sideways and align the hole position, which can make the installation operation of the partition board more convenient;

[0019] 2. In the present invention, by setting the triangular block, when the sleeve embraces the four contact plates, the triangular block is pressed down and then automatically pops out and is stuck into the limit hole provided on the sleeve. After this operation is completed, the operator can stop supporting the partition board and adjust the installation gap of the partition board instead, which can effectively prevent the partition board from falling off the keel frame during the adjustment process;

[0020] 3. In the present invention, by providing the sleeve and the locking plate, after completing the preliminary installation of the partition board and adjusting the gap, the operator pushes the partition board, and the insert rod pushes the sleeve so that the locking plate is stuck into the interior of the sleeve. The two mounting plates push the two sliders to the top and bottom of the slide seat respectively, so that the two teeth fit against the inner wall of the keel frame and hold it in place, and it is convenient to fix the position of the partition board, which can prevent the position of the partition board from shifting during the installation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the installation structure of the keel frame, the sliding seat and the plug sleeve of the present invention;

[0023] Figure 3 It is a side view structural schematic diagram of the plug sleeve of the present invention;

[0024] Figure 4 It is a schematic diagram of the cutaway structure of the plug sleeve of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-section structure of the contact plate of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the partition board of the present invention;

[0027] Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of the A area in the middle;

[0028] Figure 8 It is a schematic diagram of the installation structure of the slider, the mounting plate, the side plate and the sleeve of the present invention;

[0029] Fig. 9 It is a schematic diagram of the installation structure of the spring three and the locking plate of the present invention;

[0030] Fig.10 It is a schematic diagram of the unfolded structure of the sleeve head, locking plate and cavity of the present invention.

[0031] In the figure: 1. keel frame; 2. partition board; 3. slide seat; 4. sleeve; 5. contact plate; 6. guide strip; 7. mounting ring; 8. limit plate; 9. spring one; 10. connecting plate; 11. locking head; 12. spring two; 13. triangular block; 14. spring sheet; 15. sleeve; 16. plug rod; 17. limit hole; 18. guide groove; 19. slider; 20. mounting plate; 21. sleeve head; 22. side plate; 23. through groove; 24. spring three; 25. locking plate; 26. cavity; 27. tooth plate. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1:

[0034] See also Figures 1 to 7, an energy-saving partition board installation connector, comprising a keel frame 1, a partition board 2 is movably arranged on the side of the keel frame 1, a slide seat 3 is slidably connected inside the keel frame 1, a plug sleeve 4 is fixedly connected to the surface of the slide seat 3, four contact plates 5 are rotatably connected to the end of the plug sleeve 4 away from the slide seat 3, the four contact plates 5 are arranged in an annular manner, a guide bar 6 is fixedly connected to the inner surface of the contact plate 5, a mounting ring 7 is fixedly connected to the outer wall of the plug sleeve 4, a limit plate 8 is fixedly installed on the middle part of the mounting ring 7 and the end away from the plug sleeve 4, a spring 9 is arranged between the two limit plates 8, and the spring 9 is movably sleeved on the mounting ring 7;

[0035] The outer surface of the contact plate 5 is fixedly connected with a connecting plate 10, the top of the connecting plate 10 is sleeved and mounted on the mounting ring 7, a spring sheet 14 is fixedly mounted inside one end of the contact plate 5, a triangular block 13 is arranged on the top of the spring sheet 14, and the triangular block 13 is slidably connected with the contact plate 5;

[0036] A locking head 11 is slidably connected to the sleeve 4 around, and a spring 2 12 is fixedly connected to one side of the locking head 11. The end of the spring 2 12 away from the locking head 11 is fixedly connected to the sleeve 4, and the locking head 11 abuts against the connecting plate 10. A side of the partition board 2 close to the keel frame 1 is fixedly connected to several sleeves 15, and the several sleeves 15 are arranged equidistantly. The inside of the sleeve 15 is fixedly connected to the insertion rod 16. Four limiting holes 17 are opened on the outer wall of the sleeve 15, and four guide grooves 18 are opened on the insertion rod 16. The number and position of the limiting holes 17 are matched with the triangular block 13, and the number and position of the guide grooves 18 are matched with the guide bar 6. The length of the limiting hole 17 is greater than the length of the triangular block 13, and the length of the guide groove 18 is greater than the length of the guide bar 6. The inner surface of the contact plate 5 is set to a circular arc shape, which is used to fit tightly with the outer wall of the insertion rod 16, and the outer edge of the contact plate 5 close to the insertion rod 16 is rounded, which is used to smoothly pass into the interior of the sleeve 15;

[0037] In this embodiment, Figure 4 As shown, one side of the bottom of the locking head 11 is set as an inclined surface for being lifted up by the connecting plate 10, and the axis of the mounting ring 7 and the rotation connection point of the contact plate 5 and the sleeve 15 are on the same axis. In the initial state, the four contact plates 5 are opened outwards and cooperate with the sleeve 15 to form a trumpet shape, which is convenient for the operator to directly align the insertion rod 16 with the insertion sleeve 4;

[0038] Embodiment 2:

[0039] See also Figures 8 to 10The top and bottom of the slide seat 3 are slidably connected with a slider 19, and the ends of the two sliders 19 that are close to each other are rotatably connected with a mounting plate 20. A sleeve 21 is provided inside the plug sleeve 4, and the left and right ends of the sleeve 21 are fixedly connected with side plates 22. The top and bottom of the side plates 22 are respectively rotatably connected to the mounting plate 20. Two through grooves 23 are symmetrically provided on the sleeve 21. A spring three 24 is fixedly connected to the middle of the slide seat 3. Locking plates 25 are fixedly connected on both sides of the slide seat 3 near the spring three 24. A cavity 26 is provided inside the sleeve 21. The ends of the two sliders 19 that are away from each other are respectively fixedly connected with tooth pieces 27. The tooth pieces 27 are in active contact with the inner wall of the keel frame 1. The tooth pieces 27 are set to be made of rubber material, which is used to fit tightly with the inner wall of the keel frame 1 to facilitate fixing the partition board 2;

[0040] In this embodiment, Figure 8 As shown, in the initial state, the two mounting plates 20 are symmetrically arranged and the ends close to each other are inclined, and the locking plate 25 is provided with a certain ductility to facilitate the insertion into the interior of the sleeve 21;

[0041] The use method and advantages of the present invention: The energy-saving partition board installation connector and installation method, the working process is as follows:

[0042] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown:

[0043] S1: First, the operator installs three keel frames 1 at equal intervals in the construction area. During installation, a corresponding number of slides 3 are set on the keel frame 1 according to the number of partition boards 2 to be installed. Each partition board 2 has six slides 3 set on the keel frame 1. The operator first slides two adjacent slides 3 on each keel frame 1 to one side. The distance between the two slides 3 corresponds to the distance between the two insertion rods 16 on the partition board 2. Then, the side of the partition board 2 with the insertion rod 16 facing the keel frame 1, the partition board 2 is pushed toward the keel frame 1, and each insertion rod 16 is inserted into the insertion sleeve from the opening at the front end of the insertion sleeve 4. 4, during which the four contact plates 5 are triggered to swing inwards and retract. When the contact plate 5 swings, it drives the connecting plate 10 to compress the spring 1 9. When the connecting plate 10 passes under the locking head 11, it contacts it and pushes the locking head 11 upwards, so that the spring 2 12 is compressed. When the connecting plate 10 completely passes under the locking head 11, the locking head 11 is reset and presses the connecting plate 10 under the force of the spring 2 12, so that the positions of the four contact plates 5 are locked and the insertion rod 16 is completely wrapped. When the contact plate 5 wraps the insertion rod 16, the guide bar 6 installed on the inner surface of the contact plate 5 is stuck in the guide groove 18 on the insertion rod 16;

[0044] S2: After the contact plate 5 completely wraps around the insertion rod 16, the four contact plates 5 close to one end of the partition board 2 enter the interior of the sleeve 15. During this process, the edge of the sleeve 15 presses down the four triangular blocks 13, causing one side of the spring sheet 14 to deform. Then, the top of the triangular block 13 passes through the limiting hole 17 on the sleeve 15, and the spring sheet 14 is reset. At this time, the preliminary installation operation of the partition board 2 is completed, and the partition board 2 is slid on the keel frame 1 to adjust the spacing between each partition board 2;

[0045] S3: After adjusting the spacing between the partition boards 2, continue to push the partition boards 2 toward the keel frame 1. The end of the insert rod 16 contacts the sleeve 21 and pushes the sleeve 21 toward the slide 3, so that the spring three 24 is compressed. During the movement of the sleeve 21 toward the slide 3, the side plates 22 installed on both sides thereof drive the mounting plate 20 to move synchronously. During the contact between the end of the sleeve 21 facing the slide 3 and the surface of the slide 3, the locking plate 25 is inserted into the interior of the sleeve 21 and passes through the through groove 23. The top end height of the mounting plate 20 at the top is increased, and the bottom end height of the mounting plate 20 at the bottom is decreased, so that the two sliders 19 slide toward the top and the bottom respectively. The two tooth plates 27 contact the inner surface of the keel frame 1 and press against the inner side of the keel frame 1.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A connector for installing an energy-saving partition board, characterized in that: It comprises a keel frame (1), a partition board (2) is movably arranged on the side of the keel frame (1), a sliding seat (3) is slidably connected inside the keel frame (1), a plug sleeve (4) is fixedly connected to the surface of the sliding seat (3), four contact plates (5) are rotatably connected to the end of the plug sleeve (4) away from the sliding seat (3), the four contact plates (5) are arranged in a ring shape, the inner surface of the contact plate (5) is fixedly connected to a guide bar (6), a mounting ring (7) is fixedly connected to the outer wall of the plug sleeve (4), a limit plate (8) is fixedly installed in the middle of the mounting ring (7) and the end away from the plug sleeve (4), a spring (9) is arranged between the two limit plates (8), and the spring (9) is movably sleeved on the mounting ring (7); The outer surface of the contact plate (5) is fixedly connected to a connecting plate (10), the top of the connecting plate (10) is sleeved and mounted on a mounting ring (7), a spring sheet (14) is fixedly mounted inside one end of the contact plate (5), a triangular block (13) is arranged on the top of the spring sheet (14), and the triangular block (13) is slidably connected to the contact plate (5).

2. The energy-saving partition board installation connector according to claim 1, characterized in that: The plug sleeve (4) is slidably connected to a locking head (11) on all sides, a spring (12) is fixedly connected to one side of the locking head (11), an end of the spring (12) away from the locking head (11) is fixedly connected to the plug sleeve (4), and the locking head (11) is in contact with the connecting plate (10).

3. The energy-saving partition board installation connector according to claim 1, characterized in that: A plurality of sleeves (15) are fixedly connected to one side of the partition board (2) close to the keel frame (1), and the plurality of sleeves (15) are arranged at equal distances. An insertion rod (16) is fixedly connected to the inside of the sleeve (15), and four limiting holes (17) are formed through the outer wall of the sleeve (15), and four guide grooves (18) are formed on the insertion rod (16).

4. The energy-saving partition board installation connector according to claim 3 is characterized in that: The number and position of the limiting holes (17) are matched with the triangular block (13), the number and position of the guide grooves (18) are matched with the guide bar (6), the length of the limiting holes (17) is greater than the length of the triangular block (13), and the length of the guide grooves (18) is greater than the length of the guide bar (6).

5. The energy-saving partition board installation connector according to claim 1, characterized in that: The top and bottom of the slide seat (3) are slidably connected with a slider (19), and the ends of the two sliders (19) close to each other are rotatably connected with a mounting plate (20). A sleeve (21) is arranged inside the plug sleeve (4), and the left and right ends of the sleeve (21) are fixedly connected with side plates (22), and the top and bottom of the side plates (22) are respectively rotatably connected with the mounting plate (20), and two through grooves (23) are symmetrically provided on the sleeve (21).

6. The energy-saving partition board installation connector according to claim 5, characterized in that: A spring three (24) is fixedly connected to the middle of the slide seat (3), locking plates (25) are fixedly connected to both sides of the slide seat (3) near the spring three (24), a cavity (26) is provided inside the sleeve (21), and teeth (27) are fixedly connected to the ends of the two sliders (19) that are away from each other, respectively, and the teeth (27) are in active contact with the inner wall of the keel frame (1).

7. The energy-saving partition board installation connector according to claim 1, characterized in that: The inner surface of the contact plate (5) is arranged in an arc shape so as to fit tightly with the outer wall of the insertion rod (16); the outer edge of one end of the contact plate (5) close to the insertion rod (16) is arranged in a rounded shape so as to smoothly pass into the interior of the sleeve (15).

8. The energy-saving partition board installation connector according to claim 6, characterized in that: The tooth pieces (27) are made of rubber material and are used to fit tightly against the inner wall of the keel frame (1) to facilitate fixing of the partition wall panels (2).

9. The method for installing a connector for installing an energy-saving partition wall panel according to claim 1, characterized in that: The steps include: S1: First, the operator installs three keel frames (1) at equal intervals in the construction area. During installation, a corresponding number of slide seats (3) are arranged on the keel frames (1) according to the number of partition boards (2) to be installed. Each partition board (2) has six slide seats (3) arranged on the keel frame (1). The operator first slides two adjacent slide seats (3) on each keel frame (1) to one side. The distance between the two slide seats (3) corresponds to the distance between the two insertion rods (16) on the partition board (2). Then, the side of the partition board (2) with the insertion rod (16) is facing the keel frame (1). The partition board (2) is pushed toward the keel frame (1). Each insertion rod (16) is inserted into the insertion sleeve (4) through the opening at the front end of the insertion sleeve (4). The four contact plates (5) are triggered to swing inwards and retract during this process. When the contact plate (5) swings, it drives the connecting plate (10) to compress the spring 1 (9). When the connecting plate (10) passes under the locking head (11), it contacts the locking head (11) and pushes the locking head (11) upwards, so that the spring 2 (12) is compressed. When the connecting plate (10) completely passes under the locking head (11), the locking head (11) is reset and presses the connecting plate (10) under the force of the spring 2 (12), so that the positions of the four contact plates (5) are locked and the insertion rod (16) is completely wrapped. When the contact plate (5) wraps the insertion rod (16), the guide bar (6) installed on the inner surface of the contact plate (5) is inserted into the guide groove (18) on the insertion rod (16); S2: After the contact plate (5) completely wraps around the insertion rod (16), the four contact plates (5) are placed close to one end of the partition board (2) and enter the interior of the sleeve (15). During this process, the edge of the sleeve (15) presses down the four triangular blocks (13), causing one side of the spring sheet (14) to deform. Subsequently, the top of the triangular block (13) passes through the limiting hole (17) on the sleeve (15), and the spring sheet (14) is reset. At this point, the preliminary installation operation of the partition board (2) is completed, and the partition board (2) is slid onto the keel frame (1) to adjust the spacing between each partition board (2); S3: After adjusting the spacing between the partition boards (2), the partition boards (2) continue to be pushed toward the keel frame (1). The end of the insert rod (16) contacts the sleeve (21) and pushes the sleeve (21) toward the slide seat (3), so that the spring three (24) is compressed. During the movement of the sleeve (21) toward the slide seat (3), the side plates (22) installed on both sides thereof drive the mounting plate (20) to move synchronously. During the contact between the end of the sleeve (21) facing the slide seat (3) and the surface of the slide seat (3), the locking plate (25) is inserted into the interior of the sleeve (21) and passes through the through groove (23). The top end of the mounting plate (20) at the top is raised, and the bottom end of the mounting plate (20) at the bottom is lowered, so that the two sliders (19) slide toward the top and the bottom respectively. The two tooth plates (27) contact the inner surface of the keel frame (1) and press against the inner side of the keel frame (1).

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