Down lamp mounting assembly and soft film ceiling system

Abstract

The utility model relates to the technical field of building decoration, and provides a down lamp mounting assembly and a soft film ceiling system. The down lamp mounting assembly comprises a hanging rod; the fixing clamp comprises a hoisting part which protrudes upwards and is bent into an inverted-U shape and first horizontal connecting parts which are located at the two lower ends of the hoisting part respectively and are the same in horizontal height, a first through hole is formed in the inverted-U-shaped bottom of the hoisting part, and the lower end of the hoisting rod penetrates through the first through hole; the bottom of the inverted U shape is fixedly connected with the bottom of the inverted U shape through the first thread and a first nut matched with the first thread; the positioning piece comprises an annular clamping plate, an annular supporting plate and a mounting column; the annular supporting plate is formed by extending after being vertically bent downwards from the inner edge of the annular clamping plate; when the back of the down lamp is inserted into the containing space between the fixing clamp and the positioning piece, the clamping spring of the down lamp can be connected to the annular clamping plate in a clamped mode. According to the technical scheme of the embodiment of the invention, the down lamp can be simply and stably mounted on the soft film suspended ceiling.

Description

Technical Field

[0001] This disclosure relates to the field of building decoration technology, and in particular to a downlight mounting component and a stretch ceiling system. Background Technology

[0002] A ceiling suspension system refers to an installation method in which ceiling decorative materials are fixed to the top of a building using hangers or support structures to form a suspended ceiling. Suspended ceilings can conceal pipes, structural beams, etc., adjust the sense of layering and three-dimensionality in the room, and provide sound insulation, heat insulation, and thermal insulation, thereby improving indoor comfort and energy efficiency.

[0003] Prefabricated stretch ceilings are a relatively new type of prefabricated ceiling product. The material used in prefabricated stretch ceilings is a flexible PVC membrane, which means they cannot support loads like traditional gypsum board or other panel ceilings. Therefore, installing downlights or spotlights on a prefabricated stretch ceiling is not efficient or aesthetically pleasing, thus limiting and hindering its application and promotion. Summary of the Invention

[0004] In view of this, the present disclosure provides a downlight mounting assembly and a stretch ceiling system to solve the problem of difficult installation of downlights and spotlights in the prior art stretch ceiling system.

[0005] To achieve the above objectives, the technical solution adopted in this disclosure is:

[0006] In a first aspect, embodiments of this disclosure provide a downlight mounting assembly, comprising: a suspension rod, the lower end of which is provided with a first thread, and the upper end of which can be connected to a top wall; and a fixing clip, the fixing clip comprising a lifting part that protrudes upward and bends into an inverted U-shape and first horizontal connecting parts located at the two lower ends of the lifting part at the same horizontal height, the bottom of the inverted U-shape of the lifting part being provided with a first through hole, the lower end of the suspension rod passing through the first through hole and being connected to the bottom of the inverted U-shape via the first thread and a first nut adapted to the first thread. Fixed connection; positioning component, including an annular snap-fit ​​plate, an annular support plate formed by bending vertically downward from the inner edge of the annular snap-fit ​​plate, and mounting posts arranged on both sides of the annular snap-fit ​​plate along the diameter direction, the mounting posts having threaded holes, each mounting post being correspondingly connected to a first horizontal connecting part by a screw thread passing through the threaded hole; when the back of the downlight is inserted into the receiving space between the fixed clip and the positioning component, the downlight's snap spring can be snapped onto the annular snap-fit ​​plate, and the light-emitting part of the downlight is located below the opening of the decorative film of the stretch ceiling.

[0007] In some embodiments, the inner diameter of the annular snap-fit ​​plate is larger than the back diameter of the downlight and smaller than the diameter of the light-emitting part of the downlight.

[0008] In some embodiments, the distance between the mounting post and the inner edge of the annular snap-fit ​​plate is equal to the distance between the mounting post and the outer edge of the annular snap-fit ​​plate.

[0009] In some embodiments, the downlight mounting assembly further includes a tie rod, which includes a second horizontal connecting portion extending horizontally with a second through hole, an inclined portion extending obliquely upward and to the right from the second horizontal connecting portion, and a third horizontal connecting portion extending horizontally from the upper end of the inclined portion; the hanger passes through the second through hole and is fixedly connected to the third horizontal connecting portion by a second nut, wherein the hanger is fixedly connected to the second horizontal connecting portion at a first position, the first position of the hanger is provided with a second thread adapted to the second nut, and the third horizontal connecting portion is fixedly connected to the top wall by a screw thread.

[0010] In some embodiments, the downlight mounting assembly further includes expansion bolts, which are fixedly connected to the upper end of the hanger rod and can be fixedly connected to the top wall.

[0011] In some embodiments, the lower surface of the annular support plate is flush with the stretch ceiling.

[0012] In some embodiments, an internally threaded post is provided above the top of the fixing card. The internally threaded post has an internally threaded hole communicating with the first through hole, and the hanger rod passes through the internally threaded post.

[0013] Secondly, this disclosure provides a stretch ceiling system, including a stretch ceiling, downlights, and a downlight mounting assembly according to the first aspect of this disclosure; wherein, the stretch ceiling is mounted on a ceiling wall and includes a decorative film; the downlight mounting assembly's suspension rod is mounted on the ceiling wall, and the lower surface of the downlight mounting assembly's annular support plate is exposed in the opening of the decorative film; the back of the downlight is inserted into the receiving space between the downlight mounting assembly's fixing clip and the downlight mounting assembly's positioning member, the downlight's snap ring is engaged with the positioning member's annular snap plate, and the downlight's light-emitting part is located below the opening of the stretch ceiling's decorative film.

[0014] In some embodiments, the upper surface of the light-emitting portion of the downlight is flush with the stretch ceiling.

[0015] In some embodiments, the distance between the lower end of the back of the downlight and the lower end of the downlight's retaining spring is equal to the height of the annular support plate.

[0016] The beneficial effects of this disclosed embodiment compared to the prior art include: the technical solution of this disclosed embodiment, through the design of a fixing clip and a positioning component, can provide installation space for the downlight. Specifically, the fixing clip can connect the hanging rod and the positioning component; the upper end of the hanging rod connects to the ceiling wall, achieving a fixed connection between the positioning component and the ceiling wall; the annular snap-fit ​​plate of the positioning component can snap-fit ​​with the downlight's snap-fit ​​spring, achieving a fixed connection between the downlight and the positioning component, thereby allowing the downlight to be easily and securely installed on the ceiling wall with a stretch ceiling. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is an installation schematic diagram of a downlight mounting assembly provided in an embodiment of this disclosure;

[0019] Figure 2 This is a schematic diagram of the structure of the fixing card provided in the embodiments of this disclosure;

[0020] Figure 3 This is a schematic diagram of the positioning component provided in an embodiment of this disclosure;

[0021] Figure 4 This is a cross-sectional view of the positioning element provided in an embodiment of this disclosure;

[0022] Figure 5 This is a schematic diagram of the structure of the downlight provided in the embodiments of this disclosure;

[0023] Figure 6 This is a schematic diagram of the structure of the tie rod provided in the embodiment of this disclosure;

[0024] Figure 7 Is it like this? Figure 6 The diagram shows a bottom view of the tie rod.

[0025] The following are the labeling elements in the figure:

[0026] 110. Hanging rod; 120. Fixing clip; 121. Lifting part; 122. First horizontal connection part; 123. Internal threaded column; 130. Positioning component; 131. Ring-shaped snap plate; 132. Ring-shaped support plate; 133. Mounting column; 140. Downlight; 141. Back; 142. Light-emitting part; 143. Snap ring; 150. Expansion bolt; 160. Diagonal tie rod; 171. Fixing nut; 172. Fixing nut; 181. Screw; 200. Top wall; 300. Stretch ceiling; 601. Second horizontal connection part; 602. Inclined part; 603. Third horizontal connection part; 604. Second perforation. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this disclosure clearer, the disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining this disclosure and are not intended to limit this disclosure.

[0028] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it may be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it may be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate orientations or positions based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0029] In traditional construction methods, prefabricated stretch ceilings often use an integrated lighting solution where LED light strips are attached to the top of the stretch ceiling to solve the ceiling lighting problem. This solution is suitable for use in public building ceilings or commercial office spaces.

[0030] For stretch ceilings in residential homes or apartments, integrated lighting solutions are not suitable, as there may be situations where recessed lights or spotlights need to be installed. When recessed lights or spotlights are required, the traditional approach is to use a custom-made wooden box fabricated on-site as a base. This box is then placed on the prefabricated stretch ceiling and fixedly connected to the ceiling structure to serve as the mounting base for the recessed lights or spotlights. This solution suffers from various problems, including complex construction, low installation efficiency, and unsightly appearance.

[0031] To address the technical problem of difficult installation of downlights in stretch ceilings, this disclosure provides a downlight installation component. The component incorporates a snap-fit ​​structure that can engage the downlight, achieving a fixed connection between the component and the ceiling wall, thereby allowing the downlight to be fixed onto the component.

[0032] The downlight mounting assembly and the stretch ceiling system according to embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings.

[0033] Figure 1 This is an installation schematic diagram of a downlight mounting assembly provided in an embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the fixing card provided in the embodiments of this disclosure; Figure 3 This is a schematic diagram of the positioning component provided in an embodiment of this disclosure; Figure 4 This is a cross-sectional view of the positioning element provided in an embodiment of this disclosure; Figure 5 This is a schematic diagram of the structure of the downlight provided in the embodiments of this disclosure; Figure 6 This is a schematic diagram of the structure of the tie rod provided in the embodiment of this disclosure;

[0034] Figure 7 Is it like this? Figure 6 The diagram shows a bottom view of the tie rod. See below for reference. Figures 1 to 7 The technical solutions of the embodiments of this disclosure will be described in detail with reference to the examples.

[0035] like Figure 1 As shown, this disclosure provides a downlight mounting assembly, including: a suspension rod 110, the lower end of which is provided with a first thread, and the upper end of which can be connected to a top wall; and a fixing clip 120, which includes a lifting part that protrudes upward and bends into an inverted U-shape and first horizontal connecting parts located at the two lower ends of the lifting part at the same horizontal height. A first through hole is provided on the bottom of the inverted U-shape of the lifting part, the lower end of the suspension rod passes through the first through hole, and is fixedly connected to the bottom of the inverted U-shape by the first thread and a first nut adapted to the first thread. The first nut includes a fixing... The fixture 171; the positioning component 130 includes an annular snap-fit ​​plate, an annular support plate formed by bending vertically downward from the inner edge of the annular snap-fit ​​plate, and mounting posts arranged on both sides of the annular snap-fit ​​plate along the diameter direction. The mounting posts are provided with threaded holes, and each mounting post is correspondingly connected to a first horizontal connecting part by a screw thread passing through the threaded hole. When the back of the downlight 140 is inserted into the receiving space between the fixing clip and the positioning component, the snap spring of the downlight can be snapped onto the annular snap-fit ​​plate, and the light-emitting part of the downlight is located below the opening of the decorative film of the stretch ceiling 300.

[0036] The downlights in this embodiment can be either downlights or spotlights. When using the technical solution of this embodiment to install downlights onto a stretch ceiling, installation is quick and secure, and the positioning height of the light fixture can be quickly adjusted, thus solving the technical problem of difficult installation of downlights on stretch ceilings.

[0037] like Figure 2 As shown, the fixing clip includes a lifting part 121 that protrudes upward and bends into an inverted U-shape, and first horizontal connecting parts 122 located at the two lower ends of the lifting part at the same horizontal height. A first through hole is provided on the bottom of the inverted U-shape of the lifting part. Furthermore, an internally threaded post 123 is provided above the top of the fixing clip. The internally threaded post 123 has an internally threaded hole communicating with the first through hole, allowing the lifting rod to pass through the internally threaded post. Figure 2 As shown, the hoisting part can be a semi-circular symmetrical structure, with two first horizontal connecting parts symmetrically arranged on both sides of the hoisting part.

[0038] like Figure 3 and Figure 4 As shown, the positioning component includes an annular snap-fit ​​plate 131, an annular support plate 132, and two mounting posts 133 located on both sides of the annular snap-fit ​​plate. Figure 3As shown, the annular snap-fit ​​plate has a ring-shaped disc structure. The disc-shaped part serves as a connecting and fixing clip, and the central circular hole is for the back of the downlight to pass through. The distance between the mounting post and the inner edge of the annular snap-fit ​​plate is equal to the distance between the mounting post and the outer edge of the annular snap-fit ​​plate, which allows the positioning component to be securely suspended and provides sufficient space for the snap-fit ​​spring of the downlight.

[0039] The mounting post 133 is provided with two first horizontal connecting parts corresponding to the fixing card. The corresponding position of the first horizontal connecting part is provided with a mounting hole corresponding to the position of the mounting post 133. The screw passes through the mounting hole and engages with the nut after being screwed through the mounting post, thereby realizing the fixed connection between the fixing card and the positioning part.

[0040] like Figure 5 As shown, the downlight 140 includes a back panel 141, a light-emitting portion 142, and a retaining spring 143. (As...) Figure 1 As shown, the inner diameter of the annular snap-fit ​​plate is larger than the back diameter of the downlight, but smaller than the diameter of the light-emitting part of the downlight. This design allows the back of the downlight to snap into the receiving space of the positioning component, while the light-emitting part of the downlight cannot snap into the receiving space of the positioning component, thus facilitating installation.

[0041] like Figure 1 As shown in this embodiment, the downlight mounting assembly further includes an expansion bolt 150, which is fixedly connected to the upper end of the hanger 110. The expansion bolt 150 can be fixedly connected to the top wall 200, thereby fixing the hanger 110 to the top wall 200.

[0042] like Figure 1 As shown, in this embodiment of the disclosure, the lower surface of the annular support plate is flush with the stretch ceiling. The lower surface of the annular support plate is also the lower surface of the positioning element. Figure 1 As shown, the lower surface of the positioning element can be flush with the stretch ceiling, facilitating the flat installation of the downlights. Alternatively, the lower surface of the positioning element can be higher or lower than the stretch ceiling, allowing for easy adjustment of the downlight installation height.

[0043] like Figure 1 As shown, the lower end of the boom passes through the bottom of the inverted U-shape of the fixing clip, and the first horizontal connecting part of the fixing clip is fixedly connected to the mounting post of the positioning member by screws and nuts.

[0044] like Figure 6 and Figure 7As shown, the downlight mounting assembly also includes a tie rod 160. The tie rod includes a second horizontal connecting portion 601 extending horizontally with a second through hole 604, an inclined portion 602 extending obliquely upward and to the right from the second horizontal connecting portion, and a third horizontal connecting portion 603 extending horizontally from the upper end of the inclined portion. The hanger passes through the second through hole and is fixedly connected to the third horizontal connecting portion by a second nut. A first position of the hanger is fixedly connected to the second horizontal connecting portion, and a second thread adapted to the second nut is provided at the first position of the hanger. The third horizontal connecting portion is fixedly connected to the top wall by a threaded engagement. The second nut includes a fixing nut 172. The second thread may have the same thread structure as the first thread. The threaded engagement may be a screw 181, but is not limited to this.

[0045] like Figure 6 As shown, the tie rod is designed in a Z-shape, with the second horizontal connecting part 601 and the third horizontal connecting part 602 being the two ends of the Z-shaped structure. The hanger rod is inserted into the second through hole 604 on the second horizontal connecting part. Mounting holes can also be provided on the third horizontal connecting part, such as... Figure 1 The screw 181 shown can pass through the mounting hole to secure the tie rod to the top wall 200.

[0046] like Figure 1 As shown, the downlight mounting assembly also includes expansion bolts 150, which are fixedly connected to the upper end of the hanging rod and can be fixedly connected to the top wall.

[0047] In this embodiment of the disclosure, the outer surface of the lifting rod may be covered with a continuous first thread. The lifting rod may be a lifting rod threaded rod.

[0048] In this embodiment, the hanger rod passes through the internal threaded post of the fixing clip and is fixedly connected to the fixing clip by a fixing nut. The positioning component and the fixing clip can be fixed as a whole using screws and nuts. In this embodiment, expansion bolts can be drilled and fixed to the ceiling structure slab according to the drawings and the location of the light fixtures, and the upper end of the hanger rod is fixed inside the expansion bolts. The second through hole of the second horizontal connection part of the diagonal tie rod passes through the hanger rod and is clamped using two fixing nuts 171 located above and below the second horizontal connection part. The other end is fixed to the ceiling structure slab with screws 181, forming a triangular structure between the diagonal tie rod and the hanger rod to ensure the installation stability of the hanger rod. After the positioning component and the fixing clip are fixed as a whole, the overall structure is rotated and installed at the lower end of the hanger rod through the internal threaded post, ensuring that the lower end of the overall structure is at the same height as the stretch ceiling. Then, fixing nuts 172 are used below the fixing clip to fix the fixing clip to the hanger rod. Next, adjust the position of the positioning component to align with the pre-installed downlight position. Cut an opening in the stretch ceiling at the pre-installed downlight location, the diameter of which is the same as the diameter of the annular support plate of the positioning component. Then, pass the back of the downlight through the cut opening in the stretch ceiling and attach the downlight's retaining spring 143 to the upper surface of the annular retaining plate of the positioning component, ensuring a tight contact between the light-emitting part of the downlight and the stretch ceiling, thus completing the entire lighting installation.

[0049] The downlight mounting assembly provided in this embodiment provides installation space for the downlight by designing a fixing clip and a positioning component. The fixing clip connects the hanging rod and the positioning component. The upper end of the hanging rod connects to the ceiling wall, achieving a fixed connection between the positioning component and the ceiling wall. The annular snap-fit ​​plate of the positioning component can snap into the downlight's snap-fit ​​spring, achieving a fixed connection between the downlight and the positioning component. This allows the downlight to be easily and securely installed on a ceiling wall with a stretch ceiling.

[0050] like Figure 1 As shown, this disclosure provides a stretch ceiling system, including a stretch ceiling, downlights, and a downlight mounting assembly as described above. The stretch ceiling is mounted on a ceiling wall and includes a decorative film. The downlight mounting assembly's suspension rod is mounted on the ceiling wall, and the lower surface of the downlight mounting assembly's annular support plate is exposed in an opening in the decorative film. The back of the downlight is inserted into a receiving space between the downlight mounting assembly's fixing clip and its positioning member. The downlight's retaining clip is engaged with the positioning member's annular retaining plate, and the downlight's light-emitting portion is located below the opening in the stretch ceiling's decorative film.

[0051] Specifically, the hanger rod can be made of galvanized steel wire, steel bar, or galvanized low-carbon annealed steel wire, and the hanger rod should be directly connected to the load-bearing parts of the room's ceiling structure.

[0052] In this embodiment of the disclosure, the upper surface of the light-emitting part of the downlight is flush with the soft film ceiling, thereby ensuring the flatness and stability of the downlight installation.

[0053] In this embodiment, the distance between the lower end of the back of the downlight and the lower end of the downlight's retaining spring is equal to the height of the annular support plate. Alternatively, the distance between the lower end of the back of the downlight and the lower end of the downlight's retaining spring can be slightly less than the height of the annular support plate. This distance, being equal to or less than the height of the annular support plate, facilitates the engagement of the retaining spring and the annular retaining plate, thereby improving the installation stability of the downlight.

[0054] In the stretch ceiling system provided in this disclosure, the downlight mounting assembly provides installation space for the downlight by designing a fixing clip and a positioning component. The fixing clip connects the suspension rod and the positioning component. The upper end of the suspension rod connects to the ceiling wall, achieving a fixed connection between the positioning component and the ceiling wall. The annular snap-fit ​​plate of the positioning component can engage with the downlight's snap-fit ​​spring, achieving a fixed connection between the downlight and the positioning component. This allows the downlight to be easily and securely installed on the ceiling wall where the stretch ceiling is installed.

[0055] The above description is merely a preferred embodiment of this disclosure and is not intended to limit this disclosure. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A downlight mounting assembly, characterized in that, The downlight mounting assembly includes: The suspension rod has a first thread at its lower end and its upper end can be connected to the top wall. The fixing clip includes a lifting part that protrudes upward and bends into an inverted U-shape and a first horizontal connecting part located at the two lower ends of the lifting part at the same horizontal height. A first through hole is provided on the bottom of the inverted U-shape of the lifting part. The lower end of the lifting rod passes through the first through hole and is fixedly connected to the bottom of the inverted U-shape by the first thread and a first nut adapted to the first thread. The positioning component includes an annular snap-fit ​​plate, an annular support plate formed by bending vertically downward from the inner edge of the annular snap-fit ​​plate, and mounting posts disposed on both sides of the annular snap-fit ​​plate along the diameter direction. Each mounting post is provided with a threaded hole, and each mounting post is correspondingly connected to a first horizontal connecting part by a screw that passes through the threaded hole. When the back of the downlight is inserted into the receiving space between the fixing clip and the positioning member, the snap ring of the downlight can be snapped into the annular snap plate, and the light-emitting part of the downlight is located below the opening of the decorative film of the stretch ceiling.

2. The downlight mounting assembly according to claim 1, characterized in that, The inner diameter of the annular snap-fit ​​plate is larger than the back diameter of the downlight and smaller than the diameter of the light-emitting part of the downlight.

3. The downlight mounting assembly according to claim 1, characterized in that, The distance between the mounting post and the inner edge of the annular snap-fit ​​plate is equal to the distance between the mounting post and the outer edge of the annular snap-fit ​​plate.

4. The downlight mounting assembly according to claim 1, characterized in that, The downlight mounting assembly also includes a tie rod, which includes a second horizontal connecting portion extending horizontally with a second through hole, an inclined portion extending obliquely to the upper right from the second horizontal connecting portion, and a third horizontal connecting portion extending horizontally from the upper end of the inclined portion. The boom passes through the second through hole and is fixedly connected to the third horizontal connecting part by the second nut. The boom is fixedly connected to the second horizontal connecting part at a first position. The first position of the boom is provided with a second thread that matches the second nut. The third horizontal connecting part is fixedly connected to the top wall by a screw thread.

5. The downlight mounting assembly according to claim 1, characterized in that, The downlight mounting assembly also includes expansion bolts, which are fixedly connected to the upper end of the hanger rod and can be fixedly connected to the top wall.

6. The downlight mounting assembly according to claim 1, characterized in that, The lower surface of the annular support plate is flush with the stretch ceiling.

7. The downlight mounting assembly according to claim 1, characterized in that, An internally threaded post is provided above the top of the fixing card. The internally threaded post has an internally threaded hole that communicates with the first through hole, and the hanging rod passes through the internally threaded post.

8. A stretch ceiling system, characterized in that, The stretch ceiling system includes a stretch ceiling, downlights, and downlight mounting components as described in any one of claims 1 to 7; wherein... The stretch ceiling is installed on the ceiling wall, and the stretch ceiling includes a decorative film; The hanging rod of the downlight mounting assembly is mounted on the top wall, and the lower surface of the annular support plate of the downlight mounting assembly is exposed in the opening of the decorative film; The back of the downlight is inserted into the receiving space between the fixing clip of the downlight mounting assembly and the positioning member of the downlight mounting assembly. The snap ring of the downlight is snapped onto the annular snap plate of the positioning member. The light-emitting part of the downlight is located below the opening of the decorative film.

9. The stretch ceiling system according to claim 8, characterized in that, The upper surface of the light-emitting part of the downlight is flush with the soft film ceiling.

10. The stretch ceiling system according to claim 8, characterized in that, The distance between the lower end of the back of the downlight and the lower end of the downlight's retaining spring is equal to the height of the annular support plate.

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