Pressing type fire hydrant box invisible door connecting mechanism and fire hydrant box

Abstract

The utility model discloses press type fire hydrant case invisible door connecting mechanism and fire hydrant case, invisible door connecting mechanism includes the door body, and the door body is hinged on the door frame of the front side of wall body or box through the door body connecting structure, and the door body connecting structure includes: planar link mechanism, including first connecting rod structure, second connecting rod structure and pivot assembly, and the first end of first connecting rod structure is hinged on the inboard edge of door body through first pivot connecting piece, and the first end of second connecting rod structure is hinged on the first side edge of door frame through second pivot connecting piece, and the second end of first connecting rod structure is hinged with the second end of second connecting rod structure through pivot assembly, and press type trigger device is set up in the second side edge of door frame or the inner surface of door body, is configured to directional rebound force is applied to door body after triggering. The utility model has the beneficial effects that: when opening, it is not limited by space, the door body opening angle is big, when using, can be turned to the angle of being almost parallel with the surface of wall body or box, does not occupy the space.

Description

Technical Field

[0001] This utility model relates to the field of interior decoration, and relates to a push-button fire hydrant box hidden door connection mechanism and fire hydrant box. Specifically, it is a push-button fire hydrant box hidden door connection mechanism and fire hydrant box with a large door opening angle and no space restriction during opening and use. Background Technology

[0002] Indoor fire hydrants are fixed fire-fighting facilities used by indoor pipe networks to supply water to fire scenes. They are typically installed inside fire hydrant boxes. With the continuous improvement of architectural design and interior decoration standards, people have increasingly stringent requirements for the overall aesthetics of buildings. Traditional fire hydrant boxes, often installed in conspicuous locations in public places, can easily clash with the surrounding decorative style. Therefore, concealed fire hydrant doors have become an important solution that balances aesthetics and functionality. At the same time, it is clearly stipulated that the opening angle of the fire hydrant box door should not be less than 160° and the opening pull force should not exceed 50N, ensuring that it opens flexibly and reliably without any jamming. Traditional fire hydrant doors are either framed structures with glass or flat structures, connected to the cabinet by hinges. When the door is opened and rotates outwards, the connecting end of the door cannot continue to rotate because it abuts against the cabinet frame, limiting the opening angle and making it difficult to meet regulatory requirements after decoration. For example, CN107158626A discloses a fire hydrant door structure and its construction method. This application uses a hinged connection to connect the door to the building wall, increasing the opening angle, but the door still occupies a significant amount of space when open. Furthermore, existing fire hydrant doors suffer from drawbacks such as load-bearing structures causing sagging and pressure on the decorative surface, regular shapes being unsuitable for special curtain walls, and difficulty in controlling the gap between the door and frame. These issues increase subsequent enclosure costs and affect aesthetics and usability. In addition, it is crucial to be able to quickly access fire hydrant equipment during fires or fire drills. Fire hydrant concealed doors must not only be well concealed, but also ensure that they can be quickly opened in an emergency to provide sufficient operating space, thereby improving fire extinguishing efficiency and reducing personnel safety hazards.

[0003] Therefore, there is an urgent need for a fire hydrant box door that has a large opening angle, is not limited by space when opening, and does not occupy space when in use. Utility Model Content

[0004] In order to overcome the defects in the prior art, this utility model proposes a push-type fire hydrant box hidden door connection mechanism and fire hydrant box with a large door opening angle, no space restriction when opening, and no space occupation when in use.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: The push-button fire hydrant box concealed door connection mechanism of this utility model includes a door body, which is pivotally connected to a wall or the door frame on the front side of the box via a door body connection structure. The door body connection structure includes: A planar linkage mechanism includes a first linkage structure, a second linkage structure, and a pivot assembly. A first end of the first linkage structure is pivotally connected to the inner side of a door body via a first pivot connector. A first end of the second linkage structure is pivotally connected to a first side of a door frame via a second pivot connector. A second end of the first linkage structure is pivotally connected to the second end of the second linkage structure via the pivot assembly. A push-to-trigger device is located on the second side of the door frame or the inner surface of the door body, and is configured to apply a directional rebound force to the door body after being triggered.

[0006] As a preferred embodiment of this application, the first pivoting connection includes: The first pivot seat is fixedly installed on the inner side of the door body; and The first rotating shaft is rotatably mounted on the first rotating shaft seat and connected to the pivot assembly via the first connecting rod structure.

[0007] As a preferred embodiment of this application, the second pivoting connection includes: The second pivot seat is fixedly installed on the first side of the door frame; and The second rotating shaft is rotatably mounted on the second rotating shaft seat and connected to the pivot assembly via the second connecting rod structure, and the axis of the second rotating shaft is parallel to the axis of the pivot assembly.

[0008] As a preferred embodiment of this application, the pivoting assembly includes: The rotating shaft sleeve is fixedly connected to the end of the first connecting rod structure; and The third rotating shaft is coaxially inserted into the rotating shaft sleeve and fixedly connected to the end of the second connecting rod structure.

[0009] As a preferred embodiment of this application, the first, second, and third pivots are all vertically arranged, which can ensure that the door is always at the same height during opening or closing, preventing the door from shaking or deforming, thereby affecting the normal use of the door.

[0010] As a preferred embodiment of this application, the first linkage structure is a telescopic rod, comprising: The first connector rod has external threads machined at both ends; and Two first end connecting sleeves are provided, and one end of each of the two first insertion rods is coaxially sleeved onto the two ends of the first insertion rod and threadedly connected thereto. The other ends of the two first end connecting sleeves are rotatably connected to the first rotating shaft and the second rotating shaft, respectively.

[0011] As a preferred embodiment of this application, one end of the first end connecting sleeve is provided with a nut that matches the external thread of the first plug rod, the thread of the first plug rod is coaxially sleeved on the end of the first plug rod and threadedly connected to it through the nut, and the other end of the first end connecting sleeve is provided with a collar sleeved on the outside of the first rotating shaft or the second rotating shaft.

[0012] As a preferred embodiment of this application, the second linkage structure is a telescopic rod, comprising: The second connector has external threads machined at both ends; and Two second end connecting sleeves are provided, and one end of each of the two second plug rods is coaxially sleeved to the two ends of the second plug rod and threadedly connected thereto. The other ends of the two second end connecting sleeves are rotatably connected to the second rotating shaft and the third rotating shaft, respectively.

[0013] As a preferred embodiment of this application, one end of the second end connecting sleeve is provided with a nut that matches the external thread of the second plug rod, the thread of the second plug rod is coaxially sleeved on the end of the second plug rod and threadedly connected to it through the nut, and the other end of the second end connecting sleeve is provided with a collar sleeved on the outside of the second rotating shaft or the third rotating shaft.

[0014] As a preferred embodiment of this application, the maximum distance between the first and second pivots is greater than the thickness of the door body, so that the door body can be freely rotated when opened.

[0015] As a preferred embodiment of this application, the press-type triggering device is a magnetic door rebound device.

[0016] As a preferred embodiment of this application, when the door is closed, its outer surface is flush with the outer surface of the door frame to form an invisible closed interface.

[0017] This utility model also provides a fire hydrant box, including the push-button fire hydrant box concealed door connection mechanism.

[0018] The door movement of this application is divided into two stages: The first stage is the parallel stage to the door frame. During this stage, the door remains parallel to the door frame, with the outer surface of the door facing outward and the inner surface facing inward. In this stage, an external force is first applied to the push-type trigger device. After being triggered by the force, the push-type trigger device is activated, thereby applying a directional rebound force to the door. Under the action of the rebound force, the door moves away from the door frame, causing the door to detach from the door frame. The door continues to be pulled outward until it has moved to a suitable distance. The second stage is the flipping stage. During this stage, the door flips around the first pivot axis. The final state of this stage is that the outer surface of the door faces outward and the inner surface faces inward, realizing the inward and outward flipping of the door. In this stage, the side of the door away from the first pivot connector needs to be pushed to make the door flip around the first pivot axis until the inner surface of the door faces outward and the outer surface faces inward. At this time, the door opening angle is the maximum.

[0019] The beneficial effects of this utility model are: 1. The traditional single-axis hinge door structure has been improved and a multi-axis concealed design has been adopted. The door body and the housing are connected by a fixed pivot, and the outer door frame is connected to the outer frame bushing on the inner door frame through the outer frame pivot. This design greatly increases the opening angle to 160° or even 180°, which far exceeds the requirements of fire protection codes. It can fully meet the needs of fire equipment access and operation space, and also facilitate daily inspection and maintenance. 2. Hidden doors can use the same material or decorative techniques as the wall, or the door frame can be designed to be flush with the decorative surface. When closed, they can hide the fire hydrant without affecting the overall decoration effect, making the wall cleaner and more beautiful. When in use, they can be flipped to an angle parallel or almost parallel to the door frame to save space as much as possible. 3. The connecting mechanism of this concealed door features an adjustable-length linkage structure, which can be adjusted according to the actual wall thickness and the thickness of the decorative material, making it widely applicable to decorative walls of varying thicknesses. Furthermore, the decorative material can be laid according to the actual wall surface's splicing pattern, solving the problem of ordinary single-axis doors being unable to open when the outer door frame surface material has irregular seams, is thick, or has an irregular surface. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the door opening state of the push-button fire hydrant box concealed door connection mechanism according to an embodiment.

[0021] Figure 2 This is a schematic diagram of the closed state of the push-button fire hydrant box concealed door connection mechanism according to an embodiment.

[0022] Figure 3 This is a schematic diagram of a door connection structure according to one embodiment.

[0023] Figure 4 This is a schematic diagram of the first linkage structure according to one embodiment.

[0024] Figure 5 This is a schematic diagram of the second link structure in one embodiment.

[0025] Figure 6 This is a schematic diagram of the first stage of the push-button fire hydrant box concealed door connection mechanism according to an embodiment.

[0026] Figure 7 This is a schematic diagram of the second stage of the push-button fire hydrant box concealed door connection mechanism according to an embodiment.

[0027] Wherein, 1-wall; 11-door frame; 2-door body; 3-door body connecting structure; 31-planar linkage mechanism; 311-first linkage structure; 3111-first plug-in rod; 3112-first end connecting sleeve; 312-second linkage structure; 3121-second plug-in rod; 3122-second end connecting sleeve; 313-pivot assembly; 3131-rotating shaft sleeve; 3132-third rotating shaft; 314-first pivot connector; 3141-first rotating shaft seat; 3142-first rotating shaft; 315-first pivot connector; 3151-second rotating shaft seat; 3152-second rotating shaft; 32-press trigger device. Detailed Implementation

[0028] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application.

[0029] It should be noted that the process equipment or apparatus not specifically mentioned in the following embodiments are all conventional equipment or apparatus in the art.

[0030] Furthermore, it should be understood that the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, does not preclude the existence of other method steps before or after the combined steps, or the insertion of other method steps between these explicitly mentioned steps, unless otherwise stated. It should also be understood that the combined connection relationship between one or more devices / apparatus mentioned in this application does not preclude the existence of other devices / apparatus before or after the combined devices / apparatus, or the insertion of other devices / apparatus between these explicitly mentioned devices / apparatus, unless otherwise stated. Moreover, unless otherwise stated, the numbering of each method step is merely a convenient tool for identifying each method step, and not for limiting the order of the method steps or limiting the scope of implementation of this application. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of implementation of this application.

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms "upper," "lower," "left," "right," "inner," "outer," "axial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0035] The present application will be further described below with reference to specific embodiments, but the scope of protection of the present application is not limited thereto.

[0036] like Figure 1 , Figure 2 , Figure 6 and Figure 7 As shown, the push-button fire hydrant box concealed door connection mechanism of this utility model includes a box body 1 and a door body 2. The door body 2 is pivotally connected to the door frame 11 on the front side of the box body 1 through a door body connection structure 3. The door body connection structure 3 includes: The planar linkage mechanism 31 includes a first linkage structure 311, a second linkage structure 312, and a pivot assembly 313. The first end of the first linkage structure 311 is pivotally connected to the inner side of the door body 2 via a first pivot connector 314. The first end of the second linkage structure 312 is pivotally connected to the first side of the door frame 11 via a second pivot connector 315. The second end of the first linkage structure 311 is pivotally connected to the second end of the second linkage structure 312 via the pivot assembly 313. A push-type trigger device 32 is disposed on the second side of the door frame 11 or the inner surface of the door body 2, and is configured to apply a directional rebound force to the door body 2 after triggering.

[0037] like Figure 3 As shown, the first pivoting connector 314 includes: The first pivot seat 3141 is fixedly installed on the inner side of the door body 2; and The first rotating shaft 3142 is rotatably mounted on the first rotating shaft seat 3141 and is pivotally connected to the pivot assembly 313 through the first connecting rod structure 311.

[0038] As shown in the figure Figure 3 As shown, the second pivoting connector 315 includes: The second pivot seat 3151 is fixedly installed on the first side of the door frame 11; and The second rotating shaft 3152 is rotatably mounted on the second rotating shaft seat 3151 and pivotally connected to the pivot assembly 313 via the second connecting rod structure 312, and the axis of the second rotating shaft 3152 is parallel to the axis of the pivot assembly 313.

[0039] like Figure 1 , Figure 3 As shown, there are two sets of the first pivot connector 314, which are symmetrically arranged on the same inner side of the door body.

[0040] like Figure 1 , Figure 3 As shown, there are two sets of the second pivot connector 315, which are symmetrically arranged on the same side of the door frame, one above the other.

[0041] like Figure 3 As shown, each set of first pivot connectors 314 is connected to a set of first link structures 311, and each set of second pivot connectors 315 is connected to a set of second link structures 312. The two sets of first link structures 311 are connected to the two sets of second link structures 312 through a set of pivot assembly 313.

[0042] like Figure 3 As shown, the pivot assembly 313 includes: The rotating shaft sleeve 3131 is fixedly connected to the end of the first connecting rod structure 311; and The third rotating shaft 3132 is coaxially inserted into the rotating shaft sleeve 3131 and fixedly connected to the end of the second connecting rod structure 312.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the first, second, and third pivots are all vertically arranged, which ensures that the door remains at the same height during opening or closing, preventing the door from shaking or deforming and thus affecting its normal use.

[0044] like Figure 4 As shown, the first linkage structure 311 is a telescopic rod, comprising: The first connector 3111 has external threads machined at both ends; and Two first end connecting sleeves 3112 are provided, and one end of each of the two first insertion rods 3111 is coaxially sleeved on both ends of the first insertion rod 3111 and threadedly connected thereto. The other ends of the two first end connecting sleeves 3112 are respectively connected to the first rotating shaft 3142 and the second rotating shaft 3152.

[0045] like Figure 4 As shown, one end of the first end connecting sleeve is provided with a nut that matches the external thread of the first plug rod. The thread of the first plug rod is coaxially sleeved on the end of the first plug rod and threadedly connected to it through the nut. The other end of the first end connecting sleeve is provided with a collar sleeved on the outside of the first rotating shaft or the second rotating shaft.

[0046] like Figure 5 As shown, the second linkage structure 312 is a telescopic rod, including: The second connector 3121 has external threads machined at both ends; and Two second end connecting sleeves 3122 are provided. One end of each second end connecting sleeve 3122 is coaxially sleeved to both ends of the second insertion rod 3121 and threadedly connected thereto. The other ends of the two second end connecting sleeves 3122 are respectively connected to the second rotating shaft 3152 and the third rotating shaft 3132.

[0047] like Figure 5 As shown, one end of the second end connecting sleeve is provided with a nut that matches the external thread of the second plug rod. The thread of the second plug rod is coaxially sleeved on the end of the second plug rod and threadedly connected to it through the nut. The other end of the second end connecting sleeve is provided with a collar sleeved on the outside of the second or third rotating shaft.

[0048] like Figure 7As shown, the maximum distance between the first rotating shaft 3142 and the second rotating shaft 3152 is greater than the thickness of the door body 2.

[0049] like Figure 1 , Figure 2 As shown, the press-type trigger device 32 is a magnetic door rebound device, which can be opened and closed by pressing the door.

[0050] like Figure 2 As shown, when the door 2 is closed, its outer surface is flush with the outer surface of the door frame 11 to form an invisible closed interface, which can make the door hidden when closed.

[0051] This utility model also provides a fire hydrant box, including the push-button fire hydrant box concealed door connection mechanism.

[0052] The portal motion in this application is divided into two stages: as follows Figure 6 As shown, the first stage is parallel to the door frame. During this stage, the first and third rotating shafts remain stationary, while the second connecting rod rotates outward around the second rotating shaft. Under the action of the second rotating shaft, the door remains parallel to the door frame, with its outer surface facing outward and its inner surface facing inward. Because the direction of door movement during opening is parallel to the plane of the door frame, only a small gap is needed between the door and the door frame, and there is no interference during opening. This method does not require a large passageway width, and the hidden door is easier and faster to open. Figure 7 As shown, the second stage is the flipping stage, in which the first, second, and third pivots rotate simultaneously. As the second pivot rotates, the door moves away from the door frame, and the rotation of the third pivot allows the door to open at a greater angle. The first pivot rotates the door half a turn, allowing the outer surface of the door to fit closer to the wall surface or the enclosure, or even flush against the wall. This method achieves the maximum possible opening area of ​​the hidden door, and because the door is close to the wall, it does not obstruct passageway movement.

[0053] In this embodiment, the usage process of the push-button fire hydrant box concealed door connection mechanism is as follows: When the concealed fire hydrant door needs to be opened, an external force must first be applied to the push-button trigger device. The push-button trigger device is triggered by the force, thereby applying a directional rebound force to the door body. The second pivot rotates, and the door body moves away from the door frame under the action of the rebound force, causing the door body to separate from the door frame. Continue to pull the door body outward until the door body moves to a suitable distance. This stage of the movement is a flipping movement of the door body around the first pivot. The final state of this stage is that the outer surface of the door body faces outward and the inner surface faces inward, realizing the inward and outward flipping of the door body. In this stage, it is necessary to continue to push the side of the door body away from the first pivot connector, so that the door body flips around the first pivot until the inner surface of the door body faces outward and the outer surface of the door body faces inward. At this time, the door body opening angle is the maximum.

[0054] When the concealed fire hydrant door needs to be closed, first flip the door inward. The first, second, and third pivots rotate simultaneously, and the door begins to close. The outer surface of the door flips from the inside out until the outer surface faces outward and the inner surface faces inward, until the door is parallel to the door frame. Continue to push inward, and the door enters the door frame and fits against the push-button trigger device, thus closing the concealed fire hydrant door.

[0055] The above embodiments are for illustrating the implementation schemes disclosed in this utility model and should not be construed as limiting the utility model. Furthermore, various modifications listed herein, as well as variations in the methods and compositions of the utility model, will be apparent to those skilled in the art without departing from the scope and spirit of this utility model. Although this utility model has been specifically described in conjunction with various specific preferred embodiments, it should be understood that this utility model should not be limited to these specific embodiments. In fact, various modifications as described above that are obvious to those skilled in the art to obtain the utility model should be included within the scope of this utility model.

Claims

1. A push-button fire hydrant box concealed door connection mechanism, comprising a door body (2), wherein the door body (2) is pivotally connected to a wall or a door frame (11) on the front side of the box body (1) via a door body connection structure (3), characterized in that, The door connection structure (3) includes: The planar linkage mechanism (31) includes a first linkage structure (311), a second linkage structure (312), and a pivot assembly (313). The first end of the first linkage structure (311) is pivotally connected to the inner side of the door body (2) via a first pivot connector (314). The first end of the second linkage structure (312) is pivotally connected to the first side of the door frame (11) via a second pivot connector (315). The second end of the first linkage structure (311) is pivotally connected to the second end of the second linkage structure (312) via the pivot assembly (313). A push-type trigger device (32) is provided on the second side of the door frame (11) or the inner surface of the door body (2), and is configured to apply a directional rebound force to the door body (2) after triggering.

2. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, The first pivoting connector (314) includes: The first pivot seat (3141) is fixedly installed on the inner side of the door body (2); and The first rotating shaft (3142) is rotatably mounted on the first rotating shaft seat (3141) and connected to the pivot assembly (313) via the first connecting rod structure (311).

3. The push-button fire hydrant box concealed door connection mechanism according to claim 2, characterized in that, The second pivoting connection (315) includes: The second pivot seat (3151) is fixedly installed on the first side of the door frame (11); and The second rotating shaft (3152) is rotatably mounted on the second rotating shaft seat (3151) and connected to the pivot assembly (313) via the second connecting rod structure (312), and the axis of the second rotating shaft (3152) is parallel to the axis of the pivot assembly (313).

4. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, The pivot assembly (313) includes: The rotating shaft sleeve (3131) is fixedly connected to the end of the first connecting rod structure (311); and The third rotating shaft (3132) is coaxially inserted into the rotating shaft sleeve (3131) and fixedly connected to the end of the second connecting rod structure (312).

5. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, The first linkage structure (311) is a telescopic rod, comprising: The first connector (3111) has external threads machined at both ends; and Two first end connecting sleeves (3112) are provided. One end of each of the two first plug rods (3111) is coaxially sleeved at both ends of the first plug rod (3111) and threadedly connected thereto. The other ends of the two first end connecting sleeves (3112) are connected to the first rotating shaft (3142) and the second rotating shaft (3152) respectively.

6. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, The second linkage structure (312) is a telescopic rod, comprising: The second connector (3121) has external threads machined at both ends; and Two second end connecting sleeves (3122) are coaxially sleeved on both ends of the second plug rod (3121) and threadedly connected thereto. The other ends of the two second end connecting sleeves (3122) are respectively connected to the second rotating shaft (3152) and the third rotating shaft (3132).

7. The push-button fire hydrant box concealed door connection mechanism according to claim 3, characterized in that, The maximum distance between the first pivot (3142) and the second pivot (3152) is greater than the thickness of the door body (2).

8. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, The press-type trigger device (32) is a magnetic door rebound device.

9. The push-button fire hydrant box concealed door connection mechanism according to claim 1, characterized in that, When the door (2) is closed, its outer surface is flush with the outer surface of the door frame (11) to form an invisible closed interface.

10. A fire hydrant box, characterized in that, Includes the push-button fire hydrant box concealed door connection mechanism as described in any one of claims 1 to 9.

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