CN211008105U - Hinge, hidden door and fire hydrant box - Google Patents
Hinge, hidden door and fire hydrant box Download PDFInfo
- Publication number
- CN211008105U CN211008105U CN201921441909.5U CN201921441909U CN211008105U CN 211008105 U CN211008105 U CN 211008105U CN 201921441909 U CN201921441909 U CN 201921441909U CN 211008105 U CN211008105 U CN 211008105U
- Authority
- CN
- China
- Prior art keywords
- mounting flange
- mounting
- connecting arm
- mounting plate
- hinge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000000463 material Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000000903 blocking effect Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Hinges (AREA)
Abstract
The utility model belongs to the technical field of fire-fighting equipment, especially, relate to a hinge, hidden door and fire hydrant case, the hinge includes: the first mounting plate is mounted on the door plate, and a first connecting boss is arranged on one surface of the first mounting plate, which faces away from the door plate; a first groove is formed in the first connecting boss; one surface of the first mounting plate facing the door plate is provided with a plurality of second grooves; the second mounting plate is mounted on the door frame, and a second connecting boss is arranged on one surface of the second mounting plate, which is back to the door frame; the one side that the second mounting panel faced the door frame is provided with a plurality of third recess, and the second is connected the boss and is provided with a plurality of fourth recess towards the one side of first connection boss, and connection arm subassembly is connected between first connection boss and connection boss, is provided with a plurality of second recesses on first mounting panel and is provided with a plurality of third recesses at the second mounting panel, has alleviateed the weight of hinge, has reduced the material that hinge production used, has improved the competitiveness of enterprise.
Description
Technical Field
The utility model belongs to the technical field of fire-fighting equipment, especially, relate to a hinge, hidden door and fire hydrant case.
Background
A fire hydrant, a fixed fire fighting equipment, mainly functions to control combustible materials, isolate combustion-supporting materials and eliminate ignition sources. The fire hydrant should be placed in a public shared space such as a corridor or a hall, and generally can not be decorated in the wall body of the space, so that a striking mark is required, and a barrier cannot be arranged in front of the fire hydrant, so that the opening of a fire hydrant door is prevented from being influenced.
The opening angle of the door of the fire hydrant should not be less than 160 degrees. The opening of the box door is light and flexible without blocking. The opening tension must not be greater than 50N.
The mounting seats of the existing hinges are integrally formed, one mounting seat is of a solid structure, and therefore the mounting seats need to be made of multiple materials, and the mounting seats are of the solid structures, so that the weight of the mounting seats is heavier, the pulling force required by opening the box door is increased, and the blocking phenomenon is obvious in the using process.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hinge, the mount pad weight ratio that aims at solving the hinge among the prior art is heavier technical problem.
In order to achieve the above object, an embodiment of the present invention provides a hinge, which includes a first mounting plate, a second mounting plate and a connecting arm assembly.
The first mounting plate is mounted on the door plate, and a first connecting boss is arranged on one surface of the first mounting plate, which faces away from the door plate; a first groove is formed in the first connecting boss; a plurality of second grooves are formed in one surface, facing the door plate, of the first mounting plate, and a plurality of first mounting holes are formed in the first mounting plate;
the second mounting plate is mounted on the door frame, and a second connecting boss is arranged on one surface, back to the door frame, of the second mounting plate; a plurality of third grooves are formed in one surface, facing the door frame, of the second mounting plate, a plurality of fourth grooves are formed in one surface, facing the first connecting boss, of the second connecting boss, and a plurality of second mounting holes are formed in the second mounting plate;
the connecting arm assembly is connected between the first connecting boss and the connecting boss and enables the first mounting plate and the second mounting plate to rotate relatively.
Optionally, the connecting arm assembly comprises a first connecting arm, a second connecting arm, a third connecting arm and a fourth connecting arm.
The first connecting arm is pivoted with the first connecting boss;
the second connecting arm is pivoted with the second connecting boss;
one end of the third connecting arm is pivoted with the first connecting arm, the other end of the third connecting arm is pivoted with the second connecting boss, and an avoidance port is formed in the third connecting arm;
one end of the fourth connecting arm is pivoted with the second connecting arm, and the other end of the fourth connecting arm passes through the avoidance port and is pivoted with the first connecting boss;
the third connecting arm and the fourth connecting arm are pivoted through a pivoting shaft.
Optionally, the first connecting boss comprises a first mounting flange and a second mounting flange, and the second mounting flange is arranged on a side of the first mounting flange facing away from the second mounting plate; the second mounting flange is higher than the first mounting flange; the two ends of the top surface of the second mounting flange are respectively provided with a first connecting block, the first connecting arm is pivoted with the first mounting flange, and the fourth connecting arm is pivoted with the first connecting blocks.
Optionally, the top surface of the second mounting flange slopes downwardly in a direction from the second mounting flange to the first mounting flange.
Optionally, the second connecting boss comprises a third mounting flange and a fourth mounting flange, and the third mounting flange is arranged on the side of the fourth mounting flange, which faces away from the first mounting plate; the fourth mounting flange is taller than the third mounting flange; and the two ends of the top surface of the fourth mounting flange are respectively provided with a second connecting block, the second connecting arm is pivoted with the third mounting flange, and the third connecting arm is pivoted with the second connecting blocks.
Optionally, a top surface of the fourth mounting flange slopes downwardly in a direction from the fourth mounting flange to the third mounting flange.
Optionally, a plurality of first adjusting holes for adjusting the horizontal direction are arranged on the first mounting plate.
Optionally, be provided with a plurality of second regulation hole that is used for adjusting vertical direction on the second mounting panel the embodiment of the utility model provides an above-mentioned one or more technical scheme in the hinge have one of following technological effect at least:
when the door is installed, the first mounting plate penetrates through the first mounting hole through the fastener to be fixed on the door plate, the second mounting plate penetrates through the second mounting hole through the fastener to be fixed on the door frame, when the door plate is opened or closed, the first mounting plate is opened along the connecting arm assembly, because the first groove is formed in the first connecting boss, the plurality of second grooves are formed in the first mounting plate, the plurality of third grooves are formed in the second mounting plate, and the plurality of fourth grooves are formed in the first connecting boss, the weight of the hinge is reduced, the blocking phenomenon can be reduced in the opening process, the requirements for the hinge opening degree are met, materials used in hinge production are reduced, and the competitiveness of enterprises is improved.
The utility model also provides a hidden door, including foretell hinge.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the hidden door have one of following technological effect at least:
because this hidden door has adopted foretell hinge for the aperture that the hidden door was opened is greater than 160 degrees, can satisfy the demand, and the hinge weight ratio of adoption is less, and the power that opens the hidden door is less, and is more convenient to open, and installs more easily in the installation, and the cost of production also reduces.
The utility model also provides a fire hydrant case, included foretell hidden door.
The embodiment of the utility model provides an above-mentioned one or more technical scheme in the fire hydrant case have one of following technological effect at least:
due to the adoption of the hidden door, the fire hydrant cabinet can meet the requirements that the cabinet door is light and flexible to open, the blocking phenomenon is avoided, the opening tension is less, the opening is more convenient, the input cost is lower, and the competitiveness of a producer is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a hinge according to an embodiment of the present invention.
Fig. 2 is an exploded view of the hinge provided in fig. 1.
Fig. 3 is a schematic structural view of a first mounting plate in the hinge provided in fig. 1.
Fig. 4 is a schematic structural view of a second mounting plate in the hinge provided in fig. 1.
Fig. 5 is another schematic structural diagram of a hinge according to an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
10-first mounting plate 11-first connecting boss 111-first mounting flange
112-second mounting flange 113-pivoting portion 114-first connecting block
12-first recess 13-second recess 14-first mounting hole
15-first adjusting hole 20-second mounting plate 21-second connecting boss
211-third mounting flange 212-fourth mounting flange 213-second connecting block
22-third recess 23-fourth recess 24-second mounting hole
25-second adjustment aperture 30-connecting arm assembly 31-first connecting arm
32-second connecting arm 33-third connecting arm 34-fourth connecting arm
35-avoiding port.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary and intended to explain the embodiments of the present invention and are not to be construed as limiting the present invention.
In the description of the embodiments of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which is only for convenience in describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as fixed or detachable connections or as an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In one embodiment of the present invention, as shown in fig. 1-2, a hinge is provided, comprising a first mounting plate 10, a second mounting plate 20, and a connecting arm assembly 30; the first mounting plate 10 is mounted on a door plate, and a first connecting boss 11 is arranged on one surface of the first mounting plate 10, which is opposite to the door plate; a first groove 12 is formed in the first connecting boss 11; a plurality of second grooves 13 are formed in one surface, facing the door panel, of the first mounting plate 10, and a plurality of first mounting holes 14 are formed in the first mounting plate 10;
the second mounting plate 20 is mounted on the door frame, and a second connecting boss 21 is arranged on one surface of the second mounting plate 20, which faces away from the door frame; a plurality of third grooves 22 are formed in one surface, facing the door frame, of the second mounting plate 20, a plurality of fourth grooves 23 are formed in one surface, facing the first connecting boss 11, of the second connecting boss 21, and a plurality of second mounting holes 24 are formed in the second mounting plate 20;
wherein the connecting arm assembly 30 is connected between the first connecting boss 11 and the connecting boss and enables relative rotation between the first mounting plate 10 and the second mounting plate 20.
Specifically, during installation, first mounting panel 10 wears to establish first mounting hole 14 in order to be fixed in on the door plant through the fastener, second mounting panel 20 wears to establish second mounting hole 24 in order to be fixed in on the door frame through the fastener, when opening or closing the door plant, first mounting panel 10 opens along connecting arm subassembly 30, because be provided with first recess 12 on the first connection boss 11, be provided with a plurality of second recesses 13 on the first mounting panel 10, be provided with a plurality of third recesses 22 on the second mounting panel 20 and be provided with a plurality of fourth recesses 23 on the first connection boss 11, the weight of hinge has been alleviateed, can reduce the card and hinder the phenomenon at the opening in-process, and when satisfying the requirement of hinge aperture, the material that the hinge production used has been reduced, enterprise's competitiveness has been improved.
The connecting arm assembly 30 includes: a first connecting arm 31, a second connecting arm 32, a third connecting arm 33 and a fourth connecting arm 34.
Wherein, the first connecting arm 31 is pivotally connected to the first connecting boss 11;
wherein, the second connecting arm 32 is pivoted with the second connecting boss 21;
one end of the third connecting arm 33 is pivotally connected to the first connecting arm 31, the other end of the third connecting arm 33 is pivotally connected to the second connecting boss 21, and an avoiding opening 35 is formed in the third connecting arm 33;
one end of the fourth connecting arm 34 is pivotally connected to the second connecting arm 32, and the other end thereof passes through the avoiding opening 35 and is pivotally connected to the first connecting boss 11;
wherein the third connecting arm 33 and the fourth connecting arm 34 are pivotally connected by a pivot shaft.
Specifically, when rotating, third connecting arm 33 and fourth connecting arm 34 rotate along the pin joint axle, and fourth connecting arm 34 passes third connecting arm 33, prevents the circumstances of jamming, because the one end pin joint first connecting arm 31 of third connecting arm 33, fourth connecting arm 34 pin joint second connecting arm 32, consequently when first mounting panel 10 and second mounting panel 20 are opened at 180 degrees, connecting arm subassembly 30 forms an "M" word shape for first mounting panel 10 and second mounting panel 20 can be greater than 160 degrees expandedly.
The first connecting boss 11 comprises a first mounting flange 111 and a second mounting flange 112, and the second mounting flange 112 is arranged on the side, facing away from the second mounting plate 20, of the first mounting flange 111; the second mounting flange 112 is higher than the first mounting flange 111; both ends of the top surface of the second mounting flange 112 are provided with first connecting blocks 114, one end of the first mounting flange 111, which faces away from the second mounting flange 112, is provided with a pivoting portion 113, the first connecting arm 31 is pivoted with the pivoting portion 113 of the first mounting flange 111, and the fourth connecting arm 34 is pivoted with the two first connecting blocks 114.
Further, the width of the first mounting flange 111 is smaller than that of the second mounting flange 112, the first mounting flange 111 is located at the middle of the first mounting flange 111, the first groove 12 is disposed between the first mounting flange 111 and the second mounting flange 112, and the first groove 12 penetrates through the second mounting flange 112 and extends into the second mounting flange 112. Specifically, during installation, the first connecting block 114 is connected to the fourth connecting arm 34, the pivot portion 113 of the first mounting flange 111 is pivoted to the first connecting arm 31, and the first mounting flange 111 is lower than the second mounting flange 112, so that the first connecting arm 31 and the fourth connecting arm 34 can avoid interference in the rotating process, and because the first groove 12 is arranged in the middle of the first mounting flange 111 and the second mounting flange 112, the thicknesses of the upper end and the lower end of the first flange and the second flange are the same, the borne force is the same, and the phenomenon that one end of the first connecting arm is excessively stressed is avoided.
The top surface of the second mounting flange 112 is inclined downward in the direction from the second mounting flange 112 to the first mounting flange 111. Specifically, since the inclined surface is inclined downward in the direction from the second mounting flange 112 to the first mounting flange 111, that is, when the fourth connecting arm 34 rotates, the inclined surface does not touch the inclined surface. The phenomenon of jamming in the rotating process is prevented, and the opening smoothness is guaranteed.
The second connecting boss 21 comprises a third mounting flange 211 and a fourth mounting flange 212, and the third mounting flange 211 is arranged on the side, facing away from the first mounting plate 10, of the fourth mounting flange 212; the fourth mounting flange 212 is higher than the third mounting flange 211; the both ends of fourth mounting flange 212 top surface all are provided with second connecting block 213, second linking arm 32 with the pin joint of third mounting flange 211, third linking arm 33 with two the pin joint of second connecting block 213.
Specifically, two of the third mounting flanges 211 are provided, and are located on the side of the fourth mounting flange 212 facing away from the first mounting plate 10; that is, the second connecting arm 32 extends into two between the third mounting flanges 211 and is pivoted through the rotating shaft, the third connecting arm 33 is pivoted with the two second connecting blocks 213 through the rotating shaft, and the third mounting flange 211 is lower than the fourth mounting flange 212, so that the second connecting arm 32 and the third connecting arm 33 can avoid the interference phenomenon in the rotating process.
The top surface of the fourth mounting flange 212 is inclined downward in the direction from the fourth mounting flange 212 to the third mounting flange 211. Specifically, since the inclined surface is inclined downward in the direction from the fourth mounting flange 212 to the third mounting flange 211, that is, when the third connecting arm 33 rotates, the inclined surface does not touch the inclined surface. The phenomenon of jamming in the rotating process is prevented, and the opening smoothness is guaranteed.
The first mounting plate 10 is provided with a plurality of first adjusting holes 15 for adjusting the horizontal direction. Specifically, through the first adjusting hole 15, the horizontal position of the first mounting plate 10 can be adjusted, that is, by adjusting the horizontal position of the first mounting plate 10, the horizontal position of the door panel is adjusted, and the gap between the door panel and the door frame in the horizontal direction is adjusted.
The second mounting plate 20 is provided with a plurality of second adjusting holes 25 for adjusting the vertical direction. Specifically, the vertical position of the second mounting plate 20 can be adjusted through the second adjusting hole 25, that is, the vertical position of the door panel is adjusted by adjusting the vertical position of the second mounting plate 20, so that the gap between the door panel and the door frame in the vertical direction is adjusted.
The utility model also provides a hidden door, including foretell hinge.
Specifically, because this hidden door has adopted foretell hinge for the aperture that the hidden door was opened is greater than 160 degrees, can satisfy the demand, and the hinge weight ratio of adoption is less, and the power that opens the hidden door is less, and is more convenient to open, and installs more easily in the installation, and the cost of production also reduces.
The utility model also provides a fire hydrant case, included foretell hidden door.
Specifically, due to the adoption of the hidden door, the fire hydrant cabinet can meet the requirements that the cabinet door is light and flexible to open, the blocking phenomenon is avoided, the opening tension is less, the opening is more convenient, the input cost is lower, and the competitiveness of a producer is improved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hinge, comprising:
the first mounting plate is mounted on the door plate, and a first connecting boss is arranged on one surface of the first mounting plate, which faces away from the door plate; a first groove is formed in the first connecting boss; a plurality of second grooves are formed in one surface, facing the door plate, of the first mounting plate, and a plurality of first mounting holes are formed in the first mounting plate;
the second mounting plate is mounted on the door frame, and a second connecting boss is arranged on one surface of the second mounting plate, which is back to the door frame; a plurality of third grooves are formed in one surface, facing the door frame, of the second mounting plate, a plurality of fourth grooves are formed in one surface, facing the first connecting boss, of the second connecting boss, and a plurality of second mounting holes are formed in the second mounting plate;
and the connecting arm assembly is connected between the first connecting boss and the connecting boss and enables the first mounting plate and the second mounting plate to rotate relatively.
2. The hinge of claim 1, wherein the connecting arm assembly comprises:
the first connecting arm is pivoted with the first connecting boss;
the second connecting arm is pivoted with the second connecting boss;
one end of the third connecting arm is pivoted with the first connecting arm, the other end of the third connecting arm is pivoted with the second connecting boss, and an avoidance port is formed in the third connecting arm;
one end of the fourth connecting arm is pivoted with the second connecting arm, and the other end of the fourth connecting arm passes through the avoidance port and is pivoted with the first connecting boss;
the third connecting arm and the fourth connecting arm are pivoted through a pivoting shaft.
3. The hinge of claim 2, wherein the first connection boss includes a first mounting flange and a second mounting flange disposed on a side of the first mounting flange facing away from the second mounting plate; the second mounting flange is higher than the first mounting flange; the two ends of the top surface of the second mounting flange are respectively provided with a first connecting block, the first connecting arm is pivoted with the first mounting flange, and the fourth connecting arm is pivoted with the first connecting blocks.
4. The hinge of claim 3, wherein a top surface of the second mounting flange slopes downwardly in a direction from the second mounting flange to the first mounting flange.
5. The hinge of claim 2, wherein the second connection boss includes a third mounting flange and a fourth mounting flange, the third mounting flange being disposed on a side of the fourth mounting flange facing away from the first mounting plate; the fourth mounting flange is taller than the third mounting flange; and the two ends of the top surface of the fourth mounting flange are respectively provided with a second connecting block, the second connecting arm is pivoted with the third mounting flange, and the third connecting arm is pivoted with the second connecting blocks.
6. The hinge of claim 5, wherein a top surface of the fourth mounting flange slopes downwardly in a direction from the fourth mounting flange to the third mounting flange.
7. The hinge according to any one of claims 1 to 6, wherein the first mounting plate is provided with a plurality of first adjusting holes for adjusting a horizontal direction.
8. The hinge according to any one of claims 1 to 6, wherein the second mounting plate is provided with a plurality of second adjusting holes for adjusting a vertical direction.
9. A blank door comprising a hinge as claimed in any one of claims 1 to 8.
10. A fire hydrant cabinet comprising the blank door according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441909.5U CN211008105U (en) | 2019-08-30 | 2019-08-30 | Hinge, hidden door and fire hydrant box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921441909.5U CN211008105U (en) | 2019-08-30 | 2019-08-30 | Hinge, hidden door and fire hydrant box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211008105U true CN211008105U (en) | 2020-07-14 |
Family
ID=71507139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921441909.5U Expired - Fee Related CN211008105U (en) | 2019-08-30 | 2019-08-30 | Hinge, hidden door and fire hydrant box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211008105U (en) |
-
2019
- 2019-08-30 CN CN201921441909.5U patent/CN211008105U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4071262B2 (en) | Hidden hinge | |
| US5077864A (en) | Swing door hinge | |
| US6392140B1 (en) | Hinged pilot device door and bracket assembly | |
| US4109346A (en) | Pivot and support mounting assembly | |
| CN211008105U (en) | Hinge, hidden door and fire hydrant box | |
| KR20110137449A (en) | Stay bar for turning type window | |
| JP5118387B2 (en) | Hidden hinge with four links | |
| US20220418143A1 (en) | Symmetrical wall-mounted 2-piece cabinet for computer network equipment | |
| PL185761B1 (en) | Door handle and box incorporating a door | |
| JP2005299253A (en) | Invisible hinge | |
| JP5486801B2 (en) | Wall furniture | |
| CN212642422U (en) | Refrigerator single-rail embedded hinge | |
| JP5358042B2 (en) | Hidden hinge | |
| US4884316A (en) | Hinge | |
| JP4035186B2 (en) | Shared strike | |
| CN215803946U (en) | Single-shaft hinge and fire hydrant box hidden door structure | |
| CN211173598U (en) | Hidden hinge | |
| JP2006083628A (en) | Invisible hinge, door including the hinge, and method for mounting the hinge | |
| JP2527475B2 (en) | Hinge | |
| CN213063267U (en) | Hinge for aluminum door with automatic closing function | |
| JP3174939B2 (en) | Slide hinge | |
| CN221298896U (en) | Hinge, cabinet and automation equipment | |
| CN217538268U (en) | Door stopper device of adaptation T type door | |
| CN218234774U (en) | Embedded refrigerator hinge and refrigerator | |
| US4082337A (en) | Door securing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |