A comfortable bed for small-month-old infants

Abstract

This utility model discloses a comfortable crib specifically designed for infants in their early months, relating to the field of baby product technology. It includes a crib frame, a base, a shell, and two railings. The base is located at the bottom of the crib frame, and the shell is located at the bottom of the crib frame and fixedly connected to it. The inner cavity of the shell is horizontally aligned with the top of the base. The two railings are located on the front and rear sides of the crib frame, respectively. Sliding mechanisms that cooperate with the railings are provided on the left and right sides of the front and rear sides of the crib frame's inner cavity. Positioning mechanisms that cooperate with the sliding mechanisms are provided on the left and right sides of the railing's inner cavity. This utility model, through the coordinated arrangement of the crib frame, base, shell, railings, sliding mechanism, positioning mechanism, lifting mechanism, and transmission mechanism, solves the problem that when a crib needs to be used in conjunction with a daybed, the different heights of the daybed prevent the crib frame from being flush with the daybed, thus reducing the crib's practicality.

Description

Technical Field

[0001] This utility model relates to the field of baby product technology, specifically a comfortable bed for young infants. Background Technology

[0002] Comfortable cribs specifically designed for infants typically refer to baby beds, where safety is paramount. The bed frame is usually made of high-strength steel or high-quality wood to ensure durability. The guardrails are designed to prevent falls. The four corners are often rounded to prevent accidental injuries. Furthermore, the crib materials should be skin-friendly and non-irritating, gentle on a baby's delicate skin. The fabric and frame structure are often designed for easy cleaning, making it convenient for parents to manage cleaning while caring for their baby. Some cribs also come with removable mattresses and mosquito nets for easy washing and replacement. Comfortable cribs for infants possess significant technical features in terms of safety, comfort, ease of cleaning, and user-friendly design, aiming to provide a safe, comfortable, and healthy sleep environment for babies.

[0003] Infants in their early twenties sleep for long periods each day and require a safe and comfortable sleeping environment. Specialized comfort cribs typically feature safety borders, a fixed base, and safety rails to effectively prevent infants from rolling off or crawling out of the crib, thus preventing accidents. At the same time, a suitable mattress and pillow can provide adequate sleep support for the infant, preventing problems such as suffocation due to incorrect sleeping posture. Specialized comfort cribs for young infants play an important role in providing a safe sleep environment, cultivating independent sleep habits, facilitating parental care, providing a space for play and learning, and offering long-term value and cost-effectiveness. Therefore, choosing a suitable comfort crib for your infant is essential. When using a crib in conjunction with a daybed, the different heights of the daybed can prevent the crib from fitting flush with the daybed, thus reducing the crib's practicality. Utility Model Content

[0004] To address the problems mentioned in the background art, the purpose of this utility model is to provide a comfortable crib specifically for infants of young age, which has the advantage of quick height adjustment. This solves the problem that when a crib needs to be used in conjunction with a sleeping bed, the different heights of the sleeping bed can prevent the crib from being flush with the sleeping bed, thus reducing the practicality of the crib.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a comfortable bed specifically for infants in their early months, comprising a bed frame, a base, a shell, and two railings. The base is located at the bottom of the bed frame, and the shell is located at the bottom of the bed frame and fixedly connected to the bottom of the bed frame. The inner cavity of the shell is horizontally aligned with the top of the base. The two railings are located on the front and rear sides of the bed frame, respectively. Sliding mechanisms that cooperate with the railings are provided on the left and right sides of the front and rear sides of the inner cavity of the bed frame. Positioning mechanisms that cooperate with the sliding mechanisms are provided on the left and right sides of the inner cavity of the railings. Lifting mechanisms that cooperate with the shell are provided on the left and right sides of the top of the base. A transmission mechanism that cooperates with the lifting mechanisms is provided on the top of the base.

[0006] As a preferred embodiment of this utility model, the sliding mechanism includes a sliding groove, a column, and a slider. The sliding groove is formed in the inner cavity of the bed body, the column is located in the inner cavity of the sliding groove and is fixedly connected to the inner wall of the sliding groove, the inner cavity of the slider is slidably connected to the surface of the column, and the side of the slider away from the column is fixedly installed to the surface of the railing by bolts.

[0007] In a preferred embodiment of this utility model, the positioning mechanism includes a positioning rod, a torsion spring, and a baffle. The surface of the positioning rod is inserted and fitted into the inner cavity of the slider and the fence. The torsion spring is sleeved on the surface of the positioning rod. The right side of the torsion spring is fixedly connected to the right side surface of the positioning rod, and the left side of the torsion spring is fixedly connected to the inner wall of the fence. The baffle is located at the bottom of the positioning rod and is fixedly connected to the bottom of the positioning rod.

[0008] In a preferred embodiment of this utility model, the lifting mechanism includes a connecting sprocket, a lead screw, and a moving block. The bottom of the connecting sprocket is movably connected to the top of the base via a rotating shaft. The lead screw is located at the top of the connecting sprocket and is fixedly connected to the top of the connecting sprocket. The bushing of the inner cavity of the moving block is threadedly connected to the surface of the lead screw. The side of the moving block near the housing is fixedly connected to the inner wall of the housing.

[0009] In a preferred embodiment of this utility model, the transmission mechanism includes a rotary motor, a transmission sprocket, and a chain. The rotary motor is located at the top of the base and is fixedly installed to the top of the base by bolts. The transmission sprocket is located at the output end of the rotary motor at the bottom and is fixedly connected to the output end of the rotary motor. The inner cavity of the chain meshes with the teeth of the transmission sprocket. The left and right sides of the inner cavity of the rack mesh with the teeth of the connecting sprocket.

[0010] As a preferred embodiment of this utility model, the column has a positioning groove on the side near the fence, and the number of positioning grooves is multiple and evenly distributed on the surface of the column. The positioning rod passes through the inner wall of the fence and the slider on the side near the positioning groove and is inserted into the inner cavity of the positioning groove.

[0011] As a preferred embodiment of this utility model, limiting plates are fixedly connected to both the left and right sides of the inner cavity of the fence, and the inner cavity of the limiting plate is in contact with the surface of the baffle.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model solves the problem that when a crib is to be used in conjunction with a bed frame, base, shell, railing, sliding mechanism, positioning mechanism, lifting mechanism and transmission mechanism, the crib frame cannot be flush with the bed frame due to the different height of the bed frame, which would reduce the practicality of the crib. It achieves the effect of quickly adjusting the height of the crib frame.

[0014] 2. By setting up a sliding mechanism and a positioning mechanism, the sliding mechanism and the positioning mechanism work together to achieve the function of quickly adjusting the position of the fence and quickly fixing it, thus avoiding the situation where the fence cannot be quickly adjusted according to the usage requirements.

[0015] 3. By setting up a lifting mechanism and a transmission mechanism, the transmission mechanism can quickly drive the shell and bed body to adjust their height through the lifting mechanism, thus avoiding the situation where it is impossible to adjust and connect them according to the height of the bed. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a diagram illustrating the adjustment of the fence.

[0018] Figure 3 This is a cross-sectional schematic diagram of the fence and bed.

[0019] Figure 4 This is a schematic diagram of the bed's height adjustment.

[0020] Figure 5 This is a schematic diagram of the combination of the lifting mechanism and the transmission mechanism.

[0021] Figure 6 for Figure 3 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. Bed frame; 2. Base; 3. Shell; 4. Guardrail; 5. Sliding mechanism; 6. Positioning mechanism; 7. Lifting mechanism; 8. Transmission mechanism; 501. Slide groove; 502. Column; 503. Slider; 601. Positioning rod; 602. Torsion spring; 603. Baffle; 701. Connecting sprocket; 702. Lead screw; 703. Moving block; 801. Rotary motor; 802. Transmission sprocket; 803. Chain; 9. Positioning groove; 10. Limiting plate. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0024] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0026] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth. Example

[0027] Reference Figure 1-6 This is the first embodiment of the present invention, which provides a comfortable bed specifically for infants under 1 month old, including a bed body 1, a base 2, a shell 3, and two railings 4. The base 2 is located at the bottom of the bed body 1, and the shell 3 is located at the bottom of the bed body 1 and is fixedly connected to the bottom of the bed body 1. The inner cavity of the shell 3 is horizontally aligned with the top of the base 2. The two railings 4 are located on the front and rear sides of the bed body 1, respectively. Sliding mechanisms 5 that cooperate with the railings 4 are provided on the left and right sides of the front and rear sides of the inner cavity of the bed body 1. Positioning mechanisms 6 that cooperate with the sliding mechanisms 5 are provided on the left and right sides of the inner cavity of the railings 4. Lifting mechanisms 7 that cooperate with the shell 3 are provided on the left and right sides of the top of the base 2. A transmission mechanism 8 that cooperates with the lifting mechanisms 7 is provided on the top of the base 2.

[0028] Specifically, through the cooperation of the transmission mechanism 8 and the lifting mechanism 7, the bed body 1 can be quickly raised and lowered by the housing 3, thereby achieving the effect of quickly adapting to the horizontal bed for splicing and use. The sliding mechanism 5 and the positioning mechanism 6 can achieve the effect of quickly positioning the fence 4.

[0029] Furthermore, when the height of the bed 1 needs to be adjusted, the lifting mechanism 7 can be driven by the transmission mechanism 8. During use, the lifting mechanism 7 will drive the bed 1 to adjust its height through the housing 3. When the bed 1 is connected to the bed, the railing 4 on one side can be lowered through the sliding mechanism 5 and the positioning mechanism 6, so that the bed 1 can be connected to the bed without gaps. When resting at night, the railing 4 can be raised to form a specific partition area for the baby to rest. Example

[0030] In the second embodiment of this utility model, the sliding mechanism 5 includes a slide groove 501, a column 502, and a slider 503. The slide groove 501 is formed in the inner cavity of the bed body 1. The column 502 is located in the inner cavity of the slide groove 501 and is fixedly connected to the inner wall of the slide groove 501. The inner cavity of the slider 503 is slidably connected to the surface of the column 502. The side of the slider 503 away from the column 502 is fixedly installed to the surface of the railing 4 by bolts. The positioning mechanism 6 includes a positioning rod 601, a torsion spring 602, and a baffle 603. The surface of the positioning rod 601 is inserted and fitted into the inner cavity of the slider 503 and the railing 4. The torsion spring 602 is sleeved on the surface of the positioning rod 601. The right side of the torsion spring 602 is fixedly connected to the right surface of the positioning rod 601, and the left side of the torsion spring 602 is fixedly connected to the inner wall of the fence 4. The baffle 603 is located at the bottom of the positioning rod 601 and is fixedly connected to the bottom of the positioning rod 601. The column 502 has a positioning groove 9 on the side near the fence 4. There are multiple positioning grooves 9 and they are evenly distributed on the surface of the column 502. The positioning rod 601 passes through the inner wall of the fence 4 and the slider 503 on the side near the positioning groove 9 and is inserted into the inner cavity of the positioning groove 9. Limiting plates 10 are fixedly connected to both the left and right sides of the inner cavity of the fence 4. The inner cavity of the limiting plate 10 is in contact with the surface of the baffle 603.

[0031] Specifically, the sliding mechanism 5 and the positioning mechanism 6 work together to quickly adjust and fix the position of the fence 4, thus avoiding the situation where the fence 4 cannot be quickly adjusted according to usage requirements.

[0032] Furthermore, lifting the baffle 603 upwards causes the positioning rod 601 and torsion spring 602 to rotate during rotation. After the baffle 603 moves out of the inner cavity of the limiting plate 10, pulling the baffle 603 further moves it. During this movement, the baffle 603 stretches the torsion spring 602 via the positioning rod 601. After the positioning rod 601 moves out of the inner cavity of the positioning groove 9, the position of the fence 4 can be adjusted according to usage requirements. During movement, the fence 4 will... The cooperation between slider 503 and column 502 achieves stable movement. After the fence 4 moves to the appropriate position, the baffle 603 is released, and the torque and tension of the torsion spring 602 are released simultaneously. This allows the positioning rod 601 to be quickly inserted into the inner cavity of the positioning groove 9. As the baffle 603 resets, it will contact the inner cavity of the limiting plate 10 again. Through the cooperation with the limiting plate 10, the positioning rod 601 is prevented from dislodging from the inner cavity of the positioning groove 9, thus completing the rapid adjustment of the position of the fence 4. Example

[0033] In the third embodiment of this utility model, the lifting mechanism 7 includes a connecting sprocket 701, a lead screw 702, and a moving block 703. The bottom of the connecting sprocket 701 is movably connected to the top of the base 2 via a rotating shaft. The lead screw 702 is located at the top of the connecting sprocket 701 and is fixedly connected to the top of the connecting sprocket 701. The bushing of the inner cavity of the moving block 703 is threadedly connected to the surface of the lead screw 702. The side of the moving block 703 near the housing 3 is fixedly connected to the inner wall of the housing 3. The transmission mechanism 8 includes a rotary motor 801, a transmission sprocket 802, and a chain 803. The rotary motor 801 is located at the top of the base 2 and is fixedly installed to the top of the base 2 via bolts. The transmission sprocket 802 is located at the output end of the bottom of the rotary motor 801 and is fixedly connected to the output end of the rotary motor 801. The inner cavity of the chain 803 is meshed with the teeth of the transmission sprocket 802. The left and right sides of the inner cavity of the chain 803 are meshed with the teeth of the connecting sprocket 701.

[0034] Specifically, the transmission mechanism 8 enables the lifting mechanism 7 to quickly adjust the height of the housing 3 and the bed 1, thus avoiding the inability to adjust and connect them according to the height of the bed.

[0035] Furthermore, when it is necessary to connect the bed frame 1 with the horizontal bed, the rotary motor 801 is started. The rotary motor 801 drives the transmission sprocket 802 to rotate through its output end. During the rotation of the transmission sprocket 802, the transmission sprocket 802 drives the chain 803 to rotate. During the rotation of the chain 803, it drives the connecting sprocket 701 to rotate through the meshing connection. During the rotation of the connecting sprocket 701, the screw 702 and the moving block 703 cooperate to quickly drive the shell 3 to move up and down. During the up and down movement of the shell 3, the bed frame 1 is matched and connected with the horizontal bed. After the bed frame 1 is connected with the horizontal bed, the rotary motor 801 is turned off. This achieves the effect of locking and fixing the height of the shell 3 and the bed frame 1 through the cooperation of the screw 702 and the moving block 703, thus completing the effect of quickly connecting the bed frame 1 with the horizontal bed.

[0036] When it is necessary to assemble the bed frame 1 with the horizontal bed, the rotary motor 801 is started. The rotary motor 801 drives the transmission sprocket 802 to rotate through its output end. During the rotation of the transmission sprocket 802, the transmission sprocket 802 drives the chain 803 to rotate. During the rotation of the chain 803, it drives the connecting sprocket 701 to rotate through the meshing connection with the connecting sprocket 701. During the rotation of the connecting sprocket 701, the cooperation between the lead screw 702 and the moving block 703 achieves rapid rotation of the housing 3. The lifting and moving effect involves the housing 3 moving vertically, causing the bed body 1 to adapt and connect with the horizontal bed. After the bed body 1 connects with the horizontal bed, the rotary motor 801 is turned off. This achieves the effect of locking and fixing the height of the housing 3 and the bed body 1 through the cooperation of the lead screw 702 and the moving block 703, thus completing the effect of quick connection between the bed body 1 and the horizontal bed. Raising the baffle 603 upwards causes the positioning rod 601 and the torsion spring 602 to rotate along with it. After moving to the inner cavity of the limiting plate 10, pull the baffle 603 to move it. During the movement, the baffle 603 will stretch the torsion spring 602 through the positioning rod 601. After the positioning rod 601 moves to the inner cavity of the positioning groove 9, the position of the fence 4 can be adjusted according to the usage requirements. During the movement, the fence 4 will achieve a stable movement effect through the cooperation of the slider 503 and the column 502. After the fence 4 moves to the appropriate position, release the baffle 603, and the torque of the torsion spring 602 and the The pulling force will be released simultaneously, thereby quickly driving the positioning rod 601 into the inner cavity of the positioning groove 9. While the baffle 603 is resetting, it will contact the inner cavity of the limiting plate 10 again. Through the cooperation with the limiting plate 10, the positioning rod 601 is prevented from dislodging from the inner cavity of the positioning groove 9. This completes the rapid adjustment of the position of the fence 4. After the fence 4 is lowered, the bed 1 can be spliced ​​with the reclining bed without gaps. When resting at night, the fence 4 can be raised to form a specific partition area for the baby to rest.

[0037] In summary, the height of bed 1 can be quickly adjusted through the cooperation of bed 1, base 2, shell 3, railing 4, sliding mechanism 5, positioning mechanism 6, lifting mechanism 7 and transmission mechanism 8.

[0038] The bed 1, base 2, shell 3, fence 4, torsion spring 602, connecting sprocket 701, lead screw 702, moving block 703, rotary motor 801, transmission sprocket 802 and chain 803 used in this application can be additionally equipped with protective measures of common knowledge in this technical field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, etc., which are commonly used by those skilled in the art.

[0039] It should be noted that the bed body 1, base 2, shell 3, railing 4, torsion spring 602, connecting sprocket 701, lead screw 702, moving block 703, rotary motor 801, transmission sprocket 802 and chain 803 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method, etc. of the equipment, as well as the materials of each accessory and the selection of various parameters are all common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of this utility model. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structural equivalents but also equivalent structures. Without departing from the scope of this invention, other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments. Therefore, this invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the present invention as currently considered, or those features that are not relevant to implementing the present invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A comfortable bed specifically designed for infants in their early months, characterized in that: The bed includes a bed frame (1), a base (2), a shell (3), and two railings (4). The base (2) is located at the bottom of the bed frame (1), and the shell (3) is located at the bottom of the bed frame (1) and fixedly connected to the bottom of the bed frame (1). The inner cavity of the shell (3) is horizontally aligned with the top of the base (2). The two railings (4) are located on the front and rear sides of the bed frame (1), respectively. The bed body (1) has sliding mechanisms (5) on the left and right sides of the front and rear sides of the inner cavity, which are used in conjunction with the railing (4). The left and right sides of the inner cavity of the fence (4) are provided with positioning mechanisms (6) that cooperate with the sliding mechanism (5). The base (2) is provided with lifting mechanisms (7) on both the left and right sides of the top, which are used in conjunction with the housing (3). The top of the base (2) is provided with a transmission mechanism (8) that works in conjunction with the lifting mechanism (7).

2. The comfort bed specifically designed for young infants according to claim 1, characterized in that: The sliding mechanism (5) includes a slide groove (501), a column (502) and a slider (503). The slide groove (501) is opened in the inner cavity of the bed body (1). The column (502) is located in the inner cavity of the slide groove (501) and is fixedly connected to the inner wall of the slide groove (501). The inner cavity of the slider (503) is slidably connected to the surface of the column (502). The side of the slider (503) away from the column (502) is fixedly installed to the surface of the fence (4) by bolts.

3. The comfort bed specifically for young infants according to claim 2, characterized in that: The positioning mechanism (6) includes a positioning rod (601), a torsion spring (602), and a baffle (603). The surface of the positioning rod (601) is inserted and fitted into the inner cavity of the slider (503) and the fence (4). The torsion spring (602) is sleeved on the surface of the positioning rod (601). The right side of the torsion spring (602) is fixedly connected to the right side surface of the positioning rod (601). The left side of the torsion spring (602) is fixedly connected to the inner wall of the fence (4). The baffle (603) is located at the bottom of the positioning rod (601) and is fixedly connected to the bottom of the positioning rod (601).

4. The comfort bed specifically designed for young infants according to claim 1, characterized in that: The lifting mechanism (7) includes a connecting sprocket (701), a lead screw (702), and a moving block (703). The bottom of the connecting sprocket (701) is movably connected to the top of the base (2) via a rotating shaft. The lead screw (702) is located at the top of the connecting sprocket (701) and is fixedly connected to the top of the connecting sprocket (701). The bushing of the inner cavity of the moving block (703) is threadedly connected to the surface of the lead screw (702). The side of the moving block (703) near the housing (3) is fixedly connected to the inner wall of the housing (3).

5. A comfortable bed specifically for young infants according to claim 4, characterized in that: The transmission mechanism (8) includes a rotary motor (801), a transmission sprocket (802), and a chain (803). The rotary motor (801) is located on the top of the base (2) and is fixedly installed on the top of the base (2) by bolts. The transmission sprocket (802) is located at the output end of the bottom of the rotary motor (801) and is fixedly connected to the output end of the rotary motor (801). The inner cavity of the chain (803) is meshed with the teeth of the transmission sprocket (802). The left and right sides of the inner cavity of the chain are meshed with the teeth of the connecting sprocket (701).

6. A comfortable bed specifically for young infants according to claim 3, characterized in that: The column (502) has a positioning groove (9) on the side near the fence (4). There are multiple positioning grooves (9) and they are evenly distributed on the surface of the column (502). The positioning rod (601) passes through the inner wall of the fence (4) and the slider (503) and is inserted into the inner cavity of the positioning groove (9) on the side near the positioning groove (9).

7. A comfortable bed specifically for young infants according to claim 3, characterized in that: Limiting plates (10) are fixedly connected to both sides of the inner cavity of the fence (4), and the inner cavity of the limiting plate (10) is in contact with the surface of the baffle (603).

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