A hinge structure and a pressing device for a heat-insulating and sealing door

Abstract

The utility model relates to hinge field, solve the problem that existing hinge is difficult to ensure the operation convenience while ensuring the door body airtightness, provide a kind of hinge structure and pressing device for heat preservation airtight door, including by pivot connection's hinge head and base, base includes: connecting plate, mounting plate and bending component;The upper and lower ends of connecting plate each connect one mounting plate, and mounting plate is equipped with strip hole, and pivot is arranged in strip hole;Bending component is connected with the end of connecting plate away from the hinge head;The bending component is equipped with the limiting portion opposite the connecting plate;The hinge head includes: shaft sleeve and hinge plate, and the shaft sleeve is sleeved on the pivot;The hinge plate is connected with the shaft sleeve.The utility model is provided with strip hole on mounting plate, when the door body is opened, because pivot can move along the length direction of strip hole, so the abutting relation between hinge plate and limiting portion can be easily removed, realize the rotation of pivot, and then the opening operation of door body is more labor-saving.

Description

Technical Field

[0001] This utility model relates to the field of hinges, and more specifically, to a hinge structure and clamping device for a heat-insulating and airtight door. Background Technology

[0002] Due to the high requirements for thermal insulation performance of insulated and sealed doors, a certain amount of clamping force is needed when the door is closed to ensure the airtightness of the space inside. Although conventional hinges can meet the clamping force when the door is closed and achieve the desired airtightness, the excessive clamping force can also make it difficult to open the door. Utility Model Content

[0003] The purpose of this utility model is to provide a hinge structure for insulated and airtight doors, which solves the problem that existing hinges cannot ensure ease of operation while ensuring the airtightness of the door.

[0004] Another objective of this invention is to provide a clamping device that achieves dual protection of door sealing and ease of opening through the cooperation of a rocker assembly and a hinge structure.

[0005] The embodiments of this utility model are achieved through the following technical solutions:

[0006] A hinge structure for an insulated and airtight door includes a hinge head and a base connected by a pivot. The base includes a connecting plate, a mounting plate, and a bending member. The connecting plate is used to connect to a door frame. Each of the upper and lower ends of the connecting plate is connected to a mounting plate. The mounting plate has a slotted hole through which the pivot passes. The pivot has a degree of freedom of movement along the length of the slotted hole. The bending member is connected to the end of the connecting plate away from the hinge head. The bending member has a limiting portion opposite to the connecting plate. The hinge head includes a bushing and a hinge plate. The bushing is fitted over the pivot. The hinge plate is connected to the bushing, and at least a portion of the hinge plate is located in the gap between the limiting portion and the connecting plate. The end of the hinge plate away from the bushing includes an arc-shaped wall. When the insulated and airtight door is closed, the arc-shaped wall gradually moves away from the bushing as it extends toward the limiting portion.

[0007] Preferably, the bending member includes: an adjusting plate and a bending plate, the adjusting plate being connected to the end of the connecting plate away from the hinge head, the adjusting plate having a transverse adjusting hole; the bending plate having a connecting part and the limiting part, the connecting part being connected to the adjusting plate through a connector passing through the adjusting hole, the connector having a degree of freedom of movement to move laterally within the adjusting hole.

[0008] Preferably, the hinge plate is further provided with an arc-shaped relief wall on its side; the center of the relief wall is located outside the hinge plate.

[0009] Preferably, the hinge further includes a limiting block and a pad block, the limiting block being connected to the rotating shaft and located on one side of the bending member in the longitudinal direction; the pad block being located beside the limiting block; during the rotation of the rotating shaft, the limiting block is in at least one state of contact with the pad block.

[0010] Preferably, the limiting block has a fan-shaped portion; the distance between the arc wall of the fan-shaped portion and the rotating shaft is a first distance, the maximum distance between the rotating shaft and the pad is a second distance, and the minimum distance between the rotating shaft and the pad is a third distance; the first distance is less than the second distance, and the first distance is greater than the third distance.

[0011] Preferably, the hinge further includes: a rotating plate, one end of which is connected to the bushing, and the other end of which extends away from the base; the other end of the rotating plate is used to connect to the door body.

[0012] Preferably, the rotating plate includes an extension arm and a connecting arm, one end of the extension arm being connected to the bushing; the connecting arm being connected to the other end of the extension arm, and the connecting arm being located on the side of the connecting arm closer to the connecting plate; the connecting arm is used to connect to the door body.

[0013] A pressing device includes: a hinge structure for an insulated and airtight door and a rocker assembly; the rocker assembly includes: a pressing base, a rod body, and a pressing head, the pressing base being used to connect to a door frame; a longitudinal stop bar is provided on one side of the pressing base in the width direction; the rod body is used to rotatably connect to the door body; the pressing head is connected to the end of the rod body, and the pressing head is provided with a transverse stop bar that cooperates with the longitudinal stop bar, the bottom wall of the transverse stop bar being lower than the top wall of the longitudinal stop bar.

[0014] Preferably, the pressure seat includes: a base plate for connecting to the door frame, and the longitudinal baffle connected to the base plate; when the door is closed, the transverse baffle is accommodated in the gap between the base plate and the longitudinal baffle.

[0015] Preferably, the rocker assembly further includes: a handle and a locking plate, one end of the handle being rotatably connected to the rod body, and a horizontal plate being provided on the side wall of the handle; the locking plate is provided with a limiting plate, and the limiting plate is located below the horizontal plate.

[0016] This utility model has at least the following beneficial effects:

[0017] This invention features a strip-shaped hole on the mounting plate, allowing the pivot to shift along the length of the hole. When the door is closed, the hinge plate can tightly abut against the limiting part. When the door is opened, the pivot can move along the length of the strip-shaped hole, easily releasing the abutment between the hinge plate and the limiting part, allowing the pivot to rotate, thus making the opening of the door easier. The longitudinal stop bar prevents the rotation of the transverse stop bar, which in turn prevents the rotation of the rod. Simultaneously, the rod cannot move horizontally, preventing the pivot from moving along the strip-shaped hole, thus ensuring good sealing when the door is closed. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a hinge structure for an insulated and airtight door;

[0020] Figure 2 This is a schematic diagram of the connection structure of the rotating shaft;

[0021] Figure 3 This is a schematic diagram showing the fit between the hinge head and the base;

[0022] Figure 4 This is a schematic diagram of the hinge plate.

[0023] Figure 5 This is a schematic diagram showing the fit between the limit block and the pad block;

[0024] Figure 6 This is a schematic diagram of the installation of the clamping device;

[0025] Figure 7 This is a schematic diagram of the mating structure of the pressure head and pressure base;

[0026] Figure 8 This is a schematic diagram of the mating structure between the handle and the lock plate.

[0027] Icons: 1-Hinge, 2-Hinge head, 21-Busset, 22-Hinge plate, 221-Curved wall, 222-Leaning wall, 23-Limiting block, 231-Fan-shaped part, 24-Padded block, 25-Rotating plate, 251-Extension arm, 252-Connecting arm, 3-Base, 31-Connecting plate, 32-Mounting plate, 321-Strip hole, 4-Door frame, 5-Bending component, 51-Adjusting plate, 511-Adjusting hole, 52-Bending plate, 521-Connecting part, 522-Limiting part, 6-Connecting piece, 7-Door body, 8-Rock arm assembly, 81-Pressure seat, 811-Longitudinal stop bar, 812-Base plate, 82-Rod body, 83-Pressure head, 831-Transverse stop bar, 9-Handle, 91-Horizontal plate, 10-Lock plate, 101-Limiting plate. Detailed Implementation

[0028] To make the objectives, methods, and advantages of the embodiments of this utility model clearer, the methods in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0029] Example 1: As Figure 1-4 As shown, a hinge structure for an insulated and airtight door includes a hinge head 2 and a base 3 connected by a pivot 1. The base 3 includes a connecting plate 31, a mounting plate 32, and a bending member 5. The connecting plate 31 is used to connect to a door frame 4. Each end of the connecting plate 31 is connected to a mounting plate 32. The mounting plate 32 has a slotted hole 321 through which the pivot 1 passes. The pivot 1 has a degree of freedom to move along the length of the slotted hole 321. The bending member 5 is connected to the end of the connecting plate 31 away from the hinge head 2. The bending member 5 is provided with a limiting part 522 opposite to the connecting plate 31; the hinge head 2 includes: a bushing 21 and a hinge plate 22, the bushing 21 is sleeved on the rotating shaft 1; the hinge plate 22 is connected to the bushing 21, and at least a portion of the hinge plate 22 is located in the gap between the limiting part 522 and the connecting plate 31; the end of the hinge plate 22 away from the bushing 21 includes an arc-shaped wall 221; when the heat-insulating airtight door is in the closed state, the arc-shaped wall 221 gradually moves away from the bushing 21 as it extends toward the limiting part 522.

[0030] In practical implementation, due to the high requirements for thermal insulation performance of the insulated and sealed door, a certain clamping force is needed when the door 7 is closed to ensure the airtightness of the space inside the door. Although conventional hinges can meet the clamping requirement when the door 7 is closed and achieve the airtight effect, the clamping effect is too strong, which also makes it difficult to open the door 7. In order to solve the aforementioned problems, the applicant conceived the technical solution provided in this embodiment.

[0031] The applicant modified the existing non-horizontally movable pivot 1 to allow for a certain degree of horizontal movement. Specifically, pivot 1 can move along the length of the slot 321, allowing the door 7 to not only rotate with pivot 1 but also shift horizontally to a certain extent. A specially designed hinge plate 22 cooperates with the limiting plate 101, enabling locking and unlocking between the hinge plate 22 and the limiting part 522. Locking refers to the hinge plate 22 being unable to rotate directly clockwise or counterclockwise under the restriction of the limiting part 522. Unlocking involves the movement of pivot 1 along the slot 321. As the hinge plate 22 is subjected to rotational force, the pressure from the contact between the hinge plate 22 and the limiting part 522 pushes pivot 1, thus releasing the lock between the hinge plate 22 and the limiting part 522. Figure 3 As shown, the arc-shaped wall 221 on the hinge plate 22 ensures that when the door 7 is closed, the movement path of the fulcrum of the arc-shaped wall 221 and the limiting part 522 is blocked by the limiting part 522 when the rotating shaft 1 rotates. After the rotating shaft 1 moves to a certain extent along the strip hole 321, the movement path of the fulcrum changes due to the offset of the center of the movement path until the movement path is no longer blocked by the limiting part 522, thereby enabling the rotating shaft 1 to rotate smoothly.

[0032] Example 2: To enable adjustment of the position of the limiting part 522, and thus the position of the limiting part 522 abutting the hinge plate 22, ultimately adjusting the tightness of the door 7 when closed and the ease of opening, improvements were made based on Example 1, such as... Figure 2-3 As shown, in this embodiment, the bending member 5 includes: an adjusting plate 51 and a bending plate 52. The adjusting plate 51 is connected to the end of the connecting plate 31 away from the hinge head 2. The adjusting plate 51 is provided with a transverse adjusting hole 511. The bending plate 52 is provided with a connecting part 521 and a limiting part 522. The connecting part 521 is connected to the adjusting plate 51 through a connector 6 passing through the adjusting hole 511. The connector 6 has a degree of freedom to move laterally within the adjusting hole 511.

[0033] In the specific implementation process, such as Figure 1 As shown, the connector 6 can be a bolt or nut, and the connecting part 521 can be provided in a circular hole that fits the bolt. Figure 2 As shown, the adjusting hole 511 can be configured as a laterally extending hole. By changing the horizontal position of the bolt in the adjusting hole 511, the connection point between the connecting part 521 and the adjusting plate 51 can be changed, thereby adjusting the distance between the limiting part 522 and the connecting plate 31. Figure 3As shown, the hinge plate 22 is located between the limiting part 522 and the connecting plate 31. By adjusting the distance between the limiting part 522 and the connecting plate 31, the minimum force required to open the door 7 can be adjusted. The minimum force refers to the minimum force required to open the door 7.

[0034] Example 3: To facilitate the movement and rotation of the hinge plate 22, improvements were made based on Example 1, such as... Figure 4 As shown, in this embodiment, the side of the hinge plate 22 is also provided with an arc-shaped clearance wall 222; the center of the clearance wall 222 is located outside the hinge plate 22.

[0035] In practical implementation, if the clearance wall 222 is not provided, the contact point between the limiting part 522 and the hinge plate 22 may not be on the arc-shaped wall 221. For example Figure 4 As shown, after the relief wall 222 is set, during the movement or rotation of the hinge plate 22, the relief wall 222 and the limiting part 522 maintain a certain distance, which facilitates the mutual abutment and cooperation between the arc-shaped wall 221 and the limiting part 522. The center of the circle corresponding to the relief wall 222 refers to the center of the horizontal arc line corresponding to the arc surface where the relief wall 222 is located.

[0036] Example 4: To better guide the movement of shaft 1 and improve its stability, improvements were made based on Examples 1-3, such as... Figure 1 and Figure 5 As shown, in this embodiment, the hinge head 2 further includes a limiting block 23 and a pad block 24. The limiting block 23 is connected to the rotating shaft 1 and is located on one side of the bending member 5 in the longitudinal direction. The pad block 24 is located beside the limiting block 23. During the rotation of the rotating shaft 1, the limiting block 23 is in at least one state of contact with the pad block 24.

[0037] In the specific implementation process, such as Figure 5 As shown, the pad 24 is located between the door frame 4 and the limiting block 23. The limiting block 23 rotates synchronously with the rotating shaft 1, and with the cooperation of the limiting block 23 and the pad 24, the movement of the rotating shaft 1 can be further guided.

[0038] In this embodiment, the limiting block 23 is provided with a fan-shaped portion 231; the distance between the arc wall of the fan-shaped portion 231 and the rotating shaft 1 is the first distance, the maximum distance between the rotating shaft 1 and the pad 24 is the second distance, and the minimum distance between the rotating shaft 1 and the pad 24 is the third distance; the first distance is less than the second distance, and the first distance is greater than the third distance.

[0039] In the specific implementation process, such as Figure 5As shown, when the door 7 is closed, the pivot 1 is located on the side of the strip hole 321 closer to the door 7, and the sector 231 is away from the pad 24. When the pivot 1 rotates, the sector 231 gradually approaches the pad 24 and abuts against it. Since the radius of the sector 231 is greater than the third distance, the sector 231 can also push the pivot 1 to move along the strip hole 321. After the pivot 1 moves to the side of the strip hole 321 away from the door 7, since the second distance is greater than the radius of the sector 231, the obstruction caused by the pad 24 and the sector 231 abutting against each other can be reduced during the closing of the door 7.

[0040] Example 5: Figure 2 and Figure 6 As shown, in this embodiment, the hinge 2 further includes a rotating plate 25, one end of which is connected to the bushing 21, and the other end of which extends away from the base 3; the other end of the rotating plate 25 is used to connect to the door body 7.

[0041] In practice, the length of the rotating plate 25 can be greater than the length of the hinge plate 22, increasing the distance between the force application point and the rotating shaft 1, which facilitates the rotation of the rotating plate 25.

[0042] In this embodiment, the rotating plate 25 includes an extension arm 251 and a connecting arm 252. One end of the extension arm 251 is connected to the bushing 21. The connecting arm 252 is connected to the other end of the extension arm 251. The connecting arm 252 is located on the side of the connecting arm 252 close to the connecting plate 31. The connecting arm 252 is used to connect to the door body 7.

[0043] In specific implementation, the connecting arm 252 can be as follows: Figure 2 As shown, the entire structure is located on one side of the extension arm 251 that is biased toward the door body 7, which facilitates the connection between the rotating plate 25 and the door body 7.

[0044] Example 6: As Figure 6-8 As shown, this embodiment provides a pressing device, including: the hinge structure for the heat-insulating and airtight door and a rocker assembly 8; the rocker assembly 8 includes: a pressing base 81, a rod body 82 and a pressing head 83, the pressing base 81 is used to connect with the door frame 4; a longitudinal stop bar 811 is provided on one side of the pressing base 81 in the width direction; the rod body 82 is used to rotatably connect with the door body 7; the pressing head 83 is connected to the end of the rod body 82, and the pressing head 83 is provided with a transverse stop bar 831 that cooperates with the longitudinal stop bar 811, the bottom wall of the transverse stop bar 831 being lower than the top wall of the longitudinal stop bar 811.

[0045] In practice, the cooperation between the rocker arm assembly 8 and the hinge structure can better ensure the tightness of the door 7 when closed and its ease of opening. For example... Figure 6As shown, several vertically arranged arc-shaped brackets can be provided on the outer wall of the door body 7. The rod body 82 passes through the arc-shaped brackets, thereby realizing the rotational connection between the rod body 82 and the door body 7. The bottom wall of the transverse stop bar 831 is lower than the top wall of the longitudinal stop bar 811, so that the longitudinal stop bar 811 can hinder the rotation of the transverse stop bar 831, making it difficult for the pressure head 83 to directly detach from the pressure seat 81.

[0046] In this embodiment, as Figure 7 As shown, the pressure seat 81 includes: a base plate 812, which is used to connect with the door frame 4, and a longitudinal baffle 811 connected to the base plate 812; when the door 7 is closed, the transverse baffle 831 is accommodated in the gap between the base plate 812 and the longitudinal baffle 811.

[0047] In the specific implementation process, such as Figure 7 As shown, when the door 7 is closed, the horizontal stop bar 831 can rotate until it abuts against the vertical stop bar 811. When it is necessary to open the door 7, the rod 82 is rotated, causing the pressure head 83 to rotate, which in turn causes the horizontal stop bar 831 to abut against the base plate 812. Under the interaction of the abutment forces, the door 7 rotates, and the pressure head 83 shifts away from the base plate 812, finally completely disengaging from the pressure seat 81. When closing the door 7, the rod 82 is rotated in the opposite direction to reset the pressure head 83. Figure 6 As shown, pressure heads 83 can be provided on both the upper and lower sides of the rod body 82, and each pressure head 83 is equipped with a pressure seat 81.

[0048] Example 7: To better achieve the limiting and rotation of rod 82, improvements were made based on Example 6, such as... Figure 6 and Figure 8 As shown, in this embodiment, the rocker assembly 8 further includes a handle 9 and a locking plate 10. One end of the handle 9 is rotatably connected to the rod body 82, and a horizontal plate 91 is provided on the side wall of the handle 9. The locking plate 10 is provided with a limiting plate 101, which is located below the horizontal plate 91.

[0049] In practice, handle 9 can rotate in the vertical plane. When door 7 is closed, handle 9... Figure 6 As shown, it is basically horizontal. Lock plate 10, as... Figure 8As shown, a slot is provided, and the lower end of the handle 9 is located in the slot, making it difficult for the handle 9 to rotate horizontally, thereby preventing the rod 82 from rotating horizontally. At this time, the horizontal plate 91 abuts against the limiting plate 101, which can limit the rotation position of the handle 9 in the vertical plane. When it is necessary to open the door 7, turn the handle 9 upward to disengage it from the slot of the lock plate 10, and then use the handle 9 to rotate the rod 82, causing the pressure head 83 to rotate. Under the interaction of the horizontal stop bar 831 and the base plate 812, the door 7 rotates and opens to a certain extent. Then, by continuing to pull the rod 82, the pressure head 83 can be completely disengaged from the pressure seat 81 and the door 7 can be fully opened.

[0050] It should be noted that both the door frame 4 and the door body 7 are environmental features and are not within the scope of protection of this utility model. In addition to increasing the airtightness, the thermal insulation performance of the door body 7 can also be improved by adding interlayer materials such as thermal insulation cotton to enhance the thermal insulation performance. The inner and outer layers of the door body 7 can be made of stainless steel, and the interlayer material is located between the inner and outer layers.

[0051] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A hinge structure for a heat-insulating and airtight door, comprising a hinge head (2) and a base (3) connected by a hinge shaft (1), characterized in that, The base (3) includes: A connecting plate (31) is used to connect to the door frame (4); Mounting plate (32), with one mounting plate (32) connected to each of the upper and lower ends of the connecting plate (31). The mounting plate (32) is provided with a strip hole (321), and the rotating shaft (1) passes through the strip hole (321). The rotating shaft (1) has a degree of freedom to move along the length direction of the strip hole (321). A bending member (5) is connected to the end of the connecting plate (31) away from the hinge head (2); the bending member (5) is provided with a limiting part (522) opposite to the connecting plate (31); The hinge (2) includes: A bushing (21) is fitted over the rotating shaft (1); A hinge plate (22) is connected to the bushing (21). At least a portion of the hinge plate (22) is located in the gap between the limiting part (522) and the connecting plate (31). The end of the hinge plate (22) away from the bushing (21) includes an arc-shaped wall (221). When the heat-insulating and airtight door is closed, the arc-shaped wall (221) gradually moves away from the bushing (21) as it extends toward the limiting part (522).

2. The hinge structure for a heat-insulating door according to claim 1, characterized by The bending member (5) includes: Adjustment plate (51), the adjustment plate (51) is connected to the end of the connecting plate (31) away from the hinge head (2), the adjustment plate (51) is provided with a transverse adjustment hole (511); The bending plate (52) is provided with a connecting part (521) and a limiting part (522). The connecting part (521) is connected to the adjusting plate (51) through a connector (6) passing through the adjusting hole (511). The connector (6) has a degree of freedom to move laterally within the adjusting hole (511).

3. The hinge structure for an insulated and airtight door according to claim 1, characterized in that, The hinge plate (22) is also provided with an arc-shaped relief wall (222) on its side; the center of the relief wall (222) is located outside the hinge plate (22).

4. The hinge structure for an insulated and airtight door according to any one of claims 1-3, characterized in that, The hinge (2) also includes: Limiting block (23), the limiting block (23) is connected to the rotating shaft (1), and the limiting block (23) is located on one side of the longitudinal direction of the bending member (5); Pad (24), the pad (24) is located next to the limiting block (23); during the rotation of the rotating shaft (1), the limiting block (23) is in at least one state of contact with the pad (24).

5. The hinge structure for an insulated and airtight door according to claim 4, characterized in that, The limiting block (23) is provided with a fan-shaped part (231); the distance between the arc wall of the fan-shaped part (231) and the rotating shaft (1) is the first distance, the maximum distance between the rotating shaft (1) and the pad (24) is the second distance, and the minimum distance between the rotating shaft (1) and the pad (24) is the third distance; the first distance is less than the second distance, and the first distance is greater than the third distance.

6. The hinge structure for an insulated and airtight door according to claim 4, characterized in that, The hinge (2) also includes: A rotating plate (25) is provided, one end of which is connected to the bushing (21), and the other end of which extends away from the base (3); the other end of which is used to connect to the door body (7).

7. The hinge structure for an insulated and airtight door according to claim 6, characterized in that, The rotating plate (25) includes: An extension arm (251) is provided, one end of which is connected to the bushing (21). Connecting arm (252), which is connected to the other end of the extension arm (251), is located on the side of the connecting arm (252) closer to the connecting plate (31); the connecting arm (252) is used to connect to the door body (7).

8. A clamping device, characterized in that, include: The hinge structure for an insulated and airtight door as described in any one of claims 1-7; A joystick assembly (8), the joystick assembly (8) comprising: A pressure seat (81) is used to connect with the door frame (4); a longitudinal baffle (811) is provided on one side of the pressure seat (81) in the width direction; A rod (82) is used for rotatable connection with the door (7); The pressure head (83) is connected to the end of the rod (82). The pressure head (83) is provided with a transverse baffle (831) that cooperates with the longitudinal baffle (811). The bottom wall of the transverse baffle (831) is lower than the top wall of the longitudinal baffle (811).

9. The clamping device according to claim 8, characterized in that, The pressure seat (81) includes: A base plate (812) is used to connect with the door frame (4), and the longitudinal baffle (811) is connected to the base plate (812); When the door (7) is closed, the transverse baffle (831) is accommodated in the gap between the bottom plate (812) and the longitudinal baffle (811).

10. The clamping device according to claim 8, characterized in that, The joystick assembly (8) also includes: A handle (9), one end of which is rotatably connected to the rod (82), and a horizontal plate (91) is provided on the side wall of the handle (9); Locking plate (10), the locking plate (10) is provided with a limiting plate (101), the limiting plate (101) is located below the horizontal plate (91).

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