Water-stopping device and method for installing the water-stopping device

Abstract

To prevent water from leaking from between a cut-off plate and a lower side immovable surface.SOLUTION: In a cut-off device in which a cut-off plate 10 is erected so as to cross the flowing direction of water, a connector 40 for connecting the upper part of the cut-off plate 10 to a lower side immovable surface G is provided on the upstream side or the downstream side of the cut-off plate 10.SELECTED DRAWING: Figure 2

Description

Technical Field

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[0004] ,

[0001] The present invention relates to a water stop device that closes openings of buildings and subways with a substantially plate-shaped water stop body during water level rise to prevent water intrusion, and a method for installing the water stop device.

Background Art

[0002] When water level rises due to typhoons or heavy rainstorms intrudes into the openings of buildings and subways, there is a risk of causing significant damage due to flooding. Therefore, in preparation for such a situation, a water stop plate is stored in advance near the openings of buildings and subways, and when water level rise occurs, this water stop plate is fixed to the columns on both sides of the opening to prevent water intrusion. A water stop device has been conventionally known (see Patent Document 1). In this water stop device, by operating the pressing mechanism on the left and right end sides of the water stop plate, the lateral waterproof material at the lower end of the water stop plate is pressed against the lower stationary surface (e.g., the floor surface, etc.) to maintain water tightness.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0006] As described above, the present invention is configured in such a way that it can prevent water leakage between the water-stopping plate and the lower immovable surface. [Brief explanation of the drawing]

[0007] [Figure 1] This is a front view showing an example of a water-stopping device according to the present invention. [Figure 2] This is a longitudinal cross-sectional view along the line (II)-(II) in Figure 1. [Figure 3] This is a plan view of the water-stopping device. [Figure 4] This is a three-view drawing showing an example of a locking device. [Figure 5] This figure shows the water-stopping plate attached to the support column in a longitudinal section along the line (II)-(II) in Figure 1. [Figure 6] This diagram shows the connectors and locking devices attached in the same longitudinal section. [Figure 7] This is a longitudinal cross-section of a key part showing another example of the water-stopping device according to the present invention. [Figure 8] This is a longitudinal cross-section of a key part showing another example of the water-stopping device according to the present invention. [Figure 9] This is a plan view showing another example of a water-stopping device according to the present invention. [Modes for carrying out the invention]

[0008] Next, embodiments according to the present invention will be described in detail based on the drawings. In the following description, the upstream side means the upstream side of the assumed water flow, According to the illustrated example, the outdoor side of the structure to which the water stop device 1 is to be installed is the upstream side, and the indoor side of the structure is the downstream side. As another example, it is also possible to set the upstream side as the indoor side and the downstream side as the outdoor side.

[0009] <First Embodiment> The water stop device 1 installs one or more (two in the illustrated example) water stop plates 10, 10 between the left and right support columns X, X erected at intervals in the width direction, and blocks the water flow attempting to pass between the left and right support columns X, X with the water stop plates 10, 10.

[0010] This water stop device 1 includes two water stop plates 10, 10, a locking tool 30 that locks these water stop plates 10, 10 to the lower fixed surface G, and a connecting tool 40 that connects the upper part of the water stop plates 10, 10 to the lower fixed surface G on the upstream side of the water stop plates 10, 10.

[0011] The support column X constitutes the left and right sides of the opening in the structure to which the water stop device 1 is to be installed. Specific examples of the opening include an opening opened and closed by a door body of an automatic door, an entrance and exit of an underground passage, and the like. Each support column X is formed in a columnar shape extending upward from the lower fixed surface G by a hard metal material. On the surface of each support column X on the opening side, an upper engaged portion x1 and a lower engaged portion x2 are provided (see FIG. 2). These upper engaged portion x1 and lower engaged portion x2 are respectively engaged by an upper engaging portion 15 and a lower engaging portion 16 described later.

[0012] Each of the upper engaged portion x1 and the lower engaged portion x2 is formed in a cylindrical pin shape made of a hard metal material. The upper engaged portion x1 and the lower engaged portion x2 respectively project inward (toward the center of the opening) between the left and right support columns X, X on the upper and lower sides of the support column X.

[0013] The water stop plate 10 is provided adjacent to the left and right so as to cover the left and right halves of the opening between the columns X and X, respectively. The two water stop plates 10, 10 are symmetrically configured and are in watertight contact (see Fig. 3).

[0014] Each water stop plate 10 integrally includes a water stop plate body 11 having a substantially rectangular shape in front view, a first longitudinal watertight material 12 that protrudes from one end side in the lateral width direction and extends continuously in the longitudinal direction over the downstream side surface of the water stop plate body 11, a second longitudinal watertight material 13 that protrudes from the side surface at the other end side of the water stop plate body 11 and extends continuously in the longitudinal direction, a lateral watertight material 14 that protrudes downward from the water stop plate body 11 and extends continuously in the lateral width direction, and an upper engaging portion 15 and a lower engaging portion 16 that protrude from the left end side or the right end side of the water stop plate body 11 toward the corresponding column X.

[0015] The water stop plate body 11 is formed in a substantially rectangular plate shape having a predetermined thickness from a hard material such as metal. The downstream side surface of the water stop plate body 11 has a portion facing the column X cut out in a concave shape (see Fig. 3), and the first longitudinal watertight material 12, the upper engaging portion 15, and the lower engaging portion 16 are provided in this concave portion.

[0016] Also, on the upstream surface side of the water stop plate body 11, a locked portion 11a for locking the locking and unlocking portion 31a of the locking tool 30 is provided. This locked portion 11a is located near the center of the two water stop plates 10, 10. Specifically, on the upstream side surface of the water stop plate body 11, a bottomed hole (not shown) that is open on the upstream side is provided, and in this hole, a plate-shaped locked portion 11a (see Fig. 2) that rises upward is provided. As another example, the locked portion 11a may be arranged so as to be exposed to the outside.

[0017] The first longitudinal watertight material 12 and the second longitudinal watertight material 13 are each formed in a long shape that extends continuously in the vertical direction from an elastic material such as rubber or an elastomer resin.

[0018] The first vertical watertight material 12 is provided so as to straddle the watertight plate body 11 and the horizontal watertight material 14 over their entire vertical length. This first vertical watertight material 12 is pressed against the support column X over its entire vertical length.

[0019] The second vertical watertight material 13 is provided so as to straddle the entire length of the watertight plate body 11 and the horizontal watertight material 14 in the vertical direction. This second vertical watertight material 13 is pressed against the second vertical watertight material 13 of the adjacent watertight plate 10 over its entire length in the vertical direction.

[0020] The lateral watertight material 14 is formed in a long shape from an elastic material such as rubber or elastomer resin, and extends continuously in a long shape over approximately the entire length in the left-right direction at the lower end surface of the watertight plate body 11 (see Figure 1).

[0021] The means for joining the first vertical watertight material 12, the second vertical watertight material 13, and the horizontal watertight material 14 to the watertight plate body 11 can be bonding with adhesive (including double-sided tape or adhesive, etc.) or fitting with brackets (not shown) interposed between them.

[0022] The locking device 30 comprises a locking piece 31, one end of which is locked to the water-stopping plate body 11 and the other end which is in contact with the lower immovable surface G, and a detachable member 32 which detachably fastens the locking piece 31 to the lower immovable surface G.

[0023] The locking piece 31 has two locking / disengaging portions 31a, 31a that are separated into a roughly fork shape in plan view on one end, and a flat fixing portion 31b on the other end that overlaps with and is fixed to the lower immovable surface G.

[0024] The two engagement / disengagement portions 31a, 31a are arranged to correspond to the left and right water-stopping plates 10, 10. Each engagement / disengagement portion 31a is formed in a substantially hook shape to engage with and disengage from a locked portion 11a within the water-stopping plate body 11.

[0025] The fixing portion 31b is formed in a flat plate shape that overlaps the lower immovable surface G and has a through hole 31b1 for inserting the detachable member 32 vertically.

[0026] The detachable member 32 has a bolt with a male threaded portion at its tip, to which a hand-rotatable knob is fixed at the rear end. The male threaded portion of this detachable member 32 passes through the fixing portion 31b of the locking piece 31 and is screwed into and tightened into the female threaded hole g1 provided on the immovable surface G.

[0027] The connector 40 is provided diagonally between the upper part of the water-stopping plate 10 and the lower immovable surface G (see Figure 2), and pulls the upper part of the water-stopping plate 10 diagonally downward, pressing the lateral watertight material 14 at the lower end of the water-stopping plate 10 against the lower immovable surface G.

[0028] More specifically, the connector 40 comprises a pull-in device 41 that is operated to pull the upper part of the water-stopping plate 10 diagonally downward, a detachable part 42 that is pivotally supported on the upper end of the pull-in device 41 and detachably connected to the upper part of the water-stopping plate 10, and a fastening part 43 that supports the lower end of the pull-in device 41 and is detachably fastened to the lower immovable surface G.

[0029] The pull-in device 41 comprises a substantially cylindrical rotating operating part 41a located on the longitudinal center side, a right-hand threaded upper threaded member 41b screwed onto one end of the rotating operating part 41a, and a reverse-threaded lower threaded member 41c screwed onto the other end of the rotating operating part 41a. With this pull-in device 41, when the rotating operating part 41a is rotated in one direction, the distance between the upper threaded member 41b and the lower threaded member 41c is narrowed, and when the rotating operating part 41a is rotated in the opposite direction, the distance between the upper threaded member 41b and the lower threaded member 41c is widened. A turnbuckle of a well-known structure can be used for this pull-in device 41.

[0030] A bracket 41b1 is integrally fixed to the upper end of the upper threaded member 41b. Similarly, a bracket 41c1 is integrally fixed to the lower end of the lower threaded member 41c.

[0031] The detachable portion 42 integrally comprises a fitting portion 42a that fits across two adjacent water-stopping plates 10, 10 in the lateral direction, and a pivot portion 42b that pivotally supports a bracket 41b1 fixed to the upper end of the upper screw-type member 41b.

[0032] The fitting portion 42a has a channel-shaped steel form with an inverted concave longitudinal cross-section that extends in the lateral direction, and is formed from a hard metal material.

[0033] The pivot portion 42b protrudes upstream from the fitting portion 42a, and pivotally supports the upper end of the upper threaded member 41b via the pivot shaft 42c at its protruding end. In other words, the upper threaded member 41b is supported by the pivot portion 42b so as to rotate around the pivot shaft 42c in the lateral direction as a fulcrum.

[0034] The fastening portion 43 pivotally supports the bracket 41c1 fixed to the lower end of the lower screw member 41c and consists of a support member 43a fixed to the lower immovable surface G and a detachable member 43b that detachably connects the support member 43a to the lower immovable surface G.

[0035] The support member 43a integrally comprises a substantially plate-shaped base portion 43a1 that overlaps the lower immovable surface G, and a pivot portion 43a2 that protrudes upward from the base portion 43a1. The pivot portion 43a2 rotatably pivots the bracket 41c1 at the lower end of the lower screw-type member 41c via a lateral rotation axis 43c.

[0036] The detachable member 43b, like the detachable member 32 described above, has a bolt with a male threaded portion at its tip and a knob that can be rotated by hand fixed to the rear end of the bolt. The male threaded portion of this detachable member 43b penetrates downward through the base 43a1 of the support member 43a and is screwed into and tightened into the female threaded hole g2 provided in the immovable surface G.

[0037] Next, the procedure for installing the water-stopping device 1 with the above configuration will be described. First, the left and right water-stopping plates 10, 10 are attached to the left and right support columns X, X respectively, and erected on the lower fixed surface G.

[0038] To explain in detail, regarding one of the water-stopping plates 10: The first vertical watertight material 12 is pressed against the support column X, and the horizontal watertight material 14 is pressed against the lower immovable surface G, so that the upper engaging portion 15 and the lower engaging portion 16 engage with the upper engaged portion x1 and the lower engaged portion x2 of the support column X, respectively (see Figure 5).

[0039] Next, for the other water-stopping plate 10, the first vertical watertight material 12 is pressed against the support column X, and the horizontal watertight material 14 is pressed against the lower immovable surface G, and the second vertical watertight material 13 is pressed against the second vertical watertight material 13 of the first water-stopping plate 10, and the upper engaging portion 15 and the lower engaging portion 16 are engaged with the upper engaged portion x1 and the lower engaged portion x2 of the support column X, respectively.

[0040] Next, the lower ends of the left and right water-stopping plates 10, 10 are fixed to the lower immovable surface G by the locking device 30. More specifically, the engagement and disengagement portions 31a, 31a of the locking piece 31 in the locking device 30 are hooked onto the locked portions 11a, 11a of the left and right water-stopping plates 10, 10, respectively, and the fixing portion 31b is secured to the lower immovable surface G by the attachment and disengagement member 32.

[0041] Next, the upper parts of the left and right water-stopping plates 10, 10 are connected to the lower immovable surface G by the connector 40. More specifically, the fitting portion 42a on the upper end of the connector 40 is placed over the left and right water-stopping plates 10, 10 from above and fitted into place. Then, the support member 43a is secured to the lower immovable surface G by the attachment / detachment member 43b.

[0042] Next, the connector 40 is tightened by rotating the rotating operating part 41a of the connector 40. This operation pulls the upper ends of both water-stopping plates 10, 10 diagonally downward and upstream. Consequently, the lateral watertight material 14 at the lower end of each water-stopping plate 10 is pressed more firmly against the lower immovable surface G.

[0043] Therefore, with the water-stopping device 1 configured as described above, the central sides of both water-stopping plates 10, 10 can be sufficiently pressed downwards, and even if there are slight irregularities on the lower immovable surface G, the lateral watertight material 14 can be brought into close contact with the lower immovable surface G, preventing water leakage between the water-stopping plate 10 and the lower immovable surface G.

[0044] <Second Embodiment> The embodiments described below are modified versions of the water-stopping device 1 described above. Therefore, we will mainly describe the modified parts in detail and omit redundant detailed explanations.

[0045] The water-stopping device 2 shown in Figure 7 is the same as the water-stopping device 1 described above, but with the support member 43a replaced by the support member 43a' and the addition of a fixing pin 43d, thereby making the lower end of the pull-in device 41 of the connector 40 irremovable to the lower immovable surface G.

[0046] The support member 43a' integrally comprises a substantially plate-shaped base portion 43a1 that overlaps the lower immovable surface G, and a pivot portion 43a2' that protrudes upward from the support member 43a.

[0047] The pivot portion 43a2' is pivotally supported by a lateral rotation axis 43c on the bracket 41c1 at the lower end of the lower screw-fitting member 41c, and a fixing pin 43d is inserted at a position radially away from the pivot portion. The fixing pin 43d penetrates and fits into the pivot portion 43a2' and the support member 43a'.

[0048] Therefore, according to the water-stopping device 2 shown in Figure 7, the pull-in device 41 can be held in a non-rotatable position relative to the support member 43a', thereby preventing rattling of the water-stopping plate 10.

[0049] <Third Embodiment> The water-stopping device 3 shown in Figure 8 is the same as the water-stopping device 1 described above, but with the pull-in member 41 replaced by a biasing member 44. The biasing member 44 is a tension coil spring, and by fastening one end to the attachment part 42 and the other end to the support member 43a, it biases the upper part of the water-stopping plate 10 downward.

[0050] According to the water-stopping device 3, a simpler structure allows the central sides of both water-stopping plates 10, 10 to be pressed downward, bringing the lateral watertight material 14 into close contact with the lower immovable surface G, thereby preventing water leakage between the water-stopping plate 10 and the lower immovable surface G.

[0051] <Fourth Embodiment> The water-stopping device 4 shown in Figure 9 is the same as the water-stopping device 1 described above, but with multiple water-stopping plates 10 replaced by a single water-stopping plate 10'. The water-stopping plate 10' consists of a single water-stopping plate body 11' that spans the opening between the support columns X, X from left to right, and first vertical watertight material 12, upper engaging portion 15, and lower engaging portion 16 provided on both sides of the downstream side of the water-stopping plate body 11', as well as a horizontal watertight material (not shown) that protrudes downward from the lower end of the water-stopping plate body 11' and extends along its entire width.

[0052] The water-stopping device 4 presses the central portion of a single water-stopping plate 10 downward, bringing the lateral watertight material (not shown) at the lower end of the water-stopping plate 10' into close contact with the lower immovable surface G, thereby preventing water leakage between the water-stopping plate 10' and the lower immovable surface G.

[0053] <Other variations> In the above embodiment, the connector 40 is provided on the upstream side of the water-stopping plate 10. However, in other examples, the connector of the same structure may be provided on the downstream side of the water-stopping plate 10, or the connector of the same structure may be provided on both the upstream and downstream sides of the water-stopping plate 10.

[0054] In the above embodiment, the upper part of the water-stopping plate 10 was pulled diagonally downward on the upstream side. However, in other examples besides the illustrated example, it is also possible to pull the upper part of the water-stopping plate 10 almost straight down. In this other example, an arm protruding upstream is provided on the upper part of the water-stopping plate 10, and the tip of this arm is connected to the lower immovable surface G by a connector (not shown), thereby pulling it downward.

[0055] Furthermore, although the connector 40 is composed of a puller 41 or a biasing member 44 according to the above embodiment, the connector 40 only needs to be configured to connect the upper part of the water-stopping plate 10 to the lower immovable surface G. Other examples include configurations using strings, wires, strip-shaped members (for example, flexible belts, etc.), rod-shaped members, etc.

[0056] According to the above embodiment, a pulling device 41 or a biasing member 44 was used as a means to pull the upper end of the water-stopping plate 10 toward the lower immovable surface G. Other examples of this means include using both the pulling device 41 and the biasing member 44, using a tensioning device other than the illustrated example, or combining these as appropriate.

[0057] According to the above embodiment, in a particularly preferred configuration, the connector is configured to pull the upper part of the water-stopping plate 10 downwards. However, in another example, the upper part of the water-stopping plate 10 and the lower immovable surface G are connected by a rod-shaped connector (not shown) that does not have a tensile force.

[0058] In the above embodiment, the attachment / detachment portion 42 is designed to fit into the upper part of the water-stopping plate 10 in a concave shape. However, in another example, a recess may be provided on the upper part of the water-stopping plate 10, and a convex attachment / detachment portion (not shown) provided on the upper end side of the upper screw-on member 41b may be fitted into this recess. Furthermore, other examples include a configuration in which a hook-shaped member provided on the upper end of the upper screw-type member 41b is hooked onto the upper part of the water-stopping plate 10, or a configuration in which a magnet provided on the upper end of the upper screw-type member 41b is magnetically attracted to the upper part of the water-stopping plate 10.

[0059] In the water-stopping device 2 shown in Figure 7, the lower end of the pull-in device 41 is non-rotatably connected to the support member 43a'. However, other examples include a configuration in which the upper end of the pull-in device 41 is non-rotatably connected to the upper part of the water-stopping plate 10, or a configuration in which the upper and lower ends of the pull-in device 41 are non-rotatably connected to the upper and lower fixed surfaces G of the water-stopping plate 10, respectively.

[0060] According to the above embodiment, in a particularly preferred example, the locking device 30 is configured to lock the lower end portion of the water-stopping plate 10 to the lower immovable surface G. However, it is possible to configure the locking device 30 to lock the water-stopping plate 10 to the lower immovable surface G at least below the connection portion between the connector 40 and the water-stopping plate 10.

[0061] In the above embodiment, the watertight structure between the left and right waterstop plates 10, 10, the watertight structure between the waterstop plate 10 and the support column X, the watertight structure between the waterstop plate 10 and the lower immovable surface G, etc., can be configured in ways other than those shown in the illustration.

[0062] Furthermore, the present invention is not limited to the specific configurations described above, and can be modified as appropriate without altering the essence of the invention.

[0063] <Summary> As described above, the above embodiment discloses the following invention. (1) A water-stopping device in which a water-stopping plate is erected so as to intersect the direction of water flow, characterized in that a connector is provided on the upstream or downstream side of the water-stopping plate to connect the upper part of the water-stopping plate to a lower fixed surface (see Figures 1 to 9). (2) The water-stopping device according to (1) (see Figure 2), characterized in that the connector pulls the upper part of the water-stopping plate downward and presses the lower end of the water-stopping plate against the lower fixed surface. (3) The water-stopping device according to (1) (see Figure 2) is characterized in that the connecting member is provided diagonally between the upper part of the water-stopping plate and the lower fixed surface, and pulls the upper part of the water-stopping plate diagonally downward. (4) The water-stopping device according to any one of (1) to (3) (see Figure 2) is characterized in that the connecting member is equipped with a pulling member that pulls the upper part of the water-stopping plate downward. (5) The water-stopping device according to any one of (1) to (4) (see Figure 9), characterized in that the connecting member comprises a biasing member that biases the upper part of the water-stopping plate downward. (6) The water-stopping device according to any one of (1) to (5) (see Figure 6), characterized in that the connector has a detachable portion on its upper end that is detachably connected to the upper side of the water-stopping plate. (7) A water-stopping device in which a plurality of the aforementioned water-stopping plates are connected in the width direction, wherein the attachment / detachment portion fits across two adjacent water-stopping plates in the width direction (see Figure 7). (8) The connecting member is characterized in that one end is rotatably connected to the upper part of the water-stopping plate with a pivot point on a rotation axis in the width direction, and the other end is non-rotatably connected to the lower fixed surface (see Figure 8). (9) A water-stopping device according to any one of (1) to (8) (see Figure 2), characterized in that a locking device is provided below the connection portion between the connector and the water-stopping plate, for locking the water-stopping plate to the lower fixed surface. (10) A method for installing a water-stopping device according to any one of (1) to (9), characterized by including the steps of erecting the water-stopping plate on the lower fixed surface and connecting the upper part of the water-stopping plate to the lower fixed surface with the connector (see Figures 5 and 6). [Explanation of Symbols]

[0064] 1,2,3,4: Water stopper 10,10': Water stop plate 11,11': Water stop plate body 12: First vertical watertight material 13: Second vertical watertight material 14: Lateral watertight material 30: Locking device 31: Locking piece 32: Detachable parts 40: Connector 41: Pulling tool 42: Detachable part 43: Fastening part 44: Biasing member G: Lower immovable surface

Claims

1. In a water-stopping device in which a water-stopping plate is erected so as to intersect the direction of water flow, A connecting device is provided on the upstream or downstream side of the water-stopping plate to connect the upper part of the water-stopping plate to the lower fixed surface. The connector is configured to press the central side of the water-stopping plate downwards. The water-stopping device is characterized in that the connector has a detachable portion on its upper end that is detachably connected to the upper side of the water-stopping plate.

2. A water-stopping device in which a water-stopping plate is erected so as to intersect the direction of water flow, A connecting device is provided on the upstream or downstream side of the water-stopping plate to connect the upper part of the water-stopping plate to the lower fixed surface. The connector is configured to press the central side of the water-stopping plate downwards. The aforementioned connecting device is characterized in that one end is rotatably connected to the upper part of the water-stopping plate with a pivot point on a rotation axis in the width direction, and the other end is non-rotatably connected to the lower fixed surface.

3. A water-stopping device in which a water-stopping plate is erected so as to intersect the direction of water flow, A connecting device is provided on the upstream or downstream side of the water-stopping plate to connect the upper part of the water-stopping plate to the lower fixed surface. The connector is configured to press the central side of the water-stopping plate downwards. A locking device is provided below the connection portion between the connector and the water-stopping plate, for engaging the water-stopping plate with the lower fixed surface. The aforementioned water-stopping plate has adjacent left and right water-stopping plates in the width direction, The locking piece constituting the locking device has two locking / disengaging portions that are divided into a substantially fork shape in plan view so as to correspond to the left and right water-stopping plates, and the two locking / disengaging portions are respectively locked to the left and right water-stopping plates.

4. The water-stopping device according to any one of claims 1 to 3, characterized in that the connecting member pulls the upper part of the water-stopping plate downward and presses the lower end of the water-stopping plate against the lower fixed surface.

5. The water-stopping device according to any one of claims 1 to 3, characterized in that the connecting member is provided diagonally between the upper part of the water-stopping plate and the lower fixed surface, and pulls the upper part of the water-stopping plate diagonally downward.

6. The water-stopping device according to any one of claims 1 to 3, characterized in that the connecting member comprises a pulling member for pulling the upper part of the water-stopping plate downward.

7. The water-stopping device according to any one of claims 1 to 3, characterized in that the connector comprises a biasing member that biases the upper part of the water-stopping plate downward.

8. A water-stopping device comprising multiple water-stopping plates connected in the width direction, The water-stopping device according to claim 1, characterized in that the detachable portion fits across two water-stopping plates adjacent to each other in the width direction.

9. A method for installing a water-stopping device according to any one of claims 1 to 3, characterized by comprising the steps of: erecting the water-stopping plate on the lower fixed surface; and connecting the upper part of the water-stopping plate to the lower fixed surface with the connector.

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