CN106050998B - Automatic adjusting arm for drum brakes system - Google Patents
Automatic adjusting arm for drum brakes system Download PDFInfo
- Publication number
- CN106050998B CN106050998B CN201610580473.2A CN201610580473A CN106050998B CN 106050998 B CN106050998 B CN 106050998B CN 201610580473 A CN201610580473 A CN 201610580473A CN 106050998 B CN106050998 B CN 106050998B
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- CN
- China
- Prior art keywords
- friction
- cantilever crane
- unidirectional
- ratchet
- interruption
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/38—Slack adjusters
- F16D65/40—Slack adjusters mechanical
- F16D65/52—Slack adjusters mechanical self-acting in one direction for adjusting excessive play
Abstract
The invention discloses a kind of automatic adjusting arms for drum brakes system, belong to the Design of Auto Parts manufacturing technology field.A kind of automatic adjusting arm for drum brakes system that can voluntarily complete braking gap adjustment in the process of moving is provided.The automatic adjusting arm includes cantilever crane, interruption adjustment mechanism and unidirectional power transmission mechanism, the interruption adjustment mechanism and the unidirectional power transmission mechanism are coaxial respectively to be mounted on the cantilever crane, and the friction plate for being socketed in the drum brakes system of the unidirectional power transmission mechanism and the interruption adjustment mechanism sequence adjusts on the power intake of bar；The external motivating force that the interruption adjustment mechanism is inputted by the cantilever crane, friction plate described in intermittent torsion adjusts bar under the cooperation of the unidirectional power transmission mechanism and the interruption adjustment mechanism.
Description
Technical field
The present invention relates to a kind of automatic adjusting arm, more particularly, to a kind of automatic adjusting arm for drum brakes system,
Belong to the Design of Auto Parts manufacturing technology field.
Background technique
Drum brakes compared with disk type brake volume under the same conditions, the brake weight of drum brakes is bigger, and makes
Cause this lower, namely why load-carrying vehicle, that is, various types of lorries, especially heavy-duty freight car still uses drum-type for this
The reason of brake.Although there are following advantages for drum brakes:
1. the installation of hand brake mechanism is easy, some rear-wheel device disks using the diameter brake rim more much smaller than brake disc
The vehicle of formula brake, can be in the hand brake mechanism of brake disc centre installation drum brakes；
2. the processing of part and composition are relatively simple, and have more cheap manufacturing cost.
But drum brakes still has some fatal defects:
1. the brake rim of drum brakes diameter after heated will increase, and the stroke for stepping on brake pedal is caused to increase, hold
Brake easily occurs and reacts situation not as expected.Therefore it when driving the vehicle for using drum brakes, to avoid continuously stopping as far as possible
Vehicle causes brake block to generate heat fading phenomenon because of high temperature, this is why large-scale heavy duty lorry often needs in the process of moving
The reason of spraying；
2. brake system reaction is slower, the power of trampling of brake is less susceptible to control, and is unfavorable for doing high-frequency brake；
3. constructing, complex parts are more, and braking gap must adjust, so that maintenance is not easy.
Especially the 3rd point i.e. adjustment problem of braking gap, and at present large-scale heavy duty lorry deposit for a long time and without very
It solves the problems, such as well.In the process of moving, braking gap can rub with the extension of pot life without stopping large-scale heavy duty lorry,
Braking gap also can and then become larger therewith, must be adjusted when gap reaches capacity position, otherwise will seriously affect brake
Vehicle effect, or even can not check automobile when there is extreme case.As long as usually continuously with several during this adjustment
Hour, i.e., heavy-duty freight car just needs to adjust primary in four, 500 kilometers of traveling when overloaded.Although the common driver of this adjustment
It can be carried out, but automobile must be parked in safe place in adjustment, stopping and carrying out safety precaution can carry out, this
Sample does not just utilize thousands of, up to ten thousand kilometers of long-distance transport operation very much, especially even more so when driving on a highway.
Summary of the invention
The technical problems to be solved by the present invention are: provide it is a kind of can voluntarily complete in the process of moving braking gap adjustment
The automatic adjusting arm for drum brakes system.
Used technical solution is to solve above-mentioned technical problem: a kind of adjust automatically for drum brakes system
Arm, the automatic adjusting arm include cantilever crane, interruption adjustment mechanism and unidirectional power transmission mechanism, the interruption adjustment mechanism
With the unidirectional power transmission mechanism is coaxial respectively is mounted on the cantilever crane, the unidirectional power transmission mechanism and
On the power intake of the friction plate adjustment bar for being socketed in the drum brakes system of the interruption adjustment mechanism sequence；Institute
The external motivating force that the interruption adjustment mechanism stated is inputted by the cantilever crane, the unidirectional power transmission mechanism and it is described between
Friction plate described in intermittent torsion adjusts bar under the cooperation of disconnected adjustment mechanism.
The beneficial effects of the present invention are: the application by be arranged it is a set of include cantilever crane, unidirectional power transmission mechanism and
The automatic adjusting arm of disconnected adjustment mechanism 2, and the unidirectional power transmission mechanism and interruption adjustment mechanism are distinguished into coaxial peace
On the cantilever crane, then make being socketed in for the unidirectional power transmission mechanism and the interruption adjustment mechanism sequence
On the power intake of the friction plate adjustment bar of the drum brakes system.In this way, in the friction disc wear of drum brakes system
To when needing to adjust, can be inputted by the cooperation of the interruption adjustment mechanism and unidirectional power transmission mechanism in cantilever crane
External motivating force under the action of friction plate described in due course torsion adjust bar, reach and voluntarily complete brake in the process of moving
Gap adjustment purpose, make the braking gap of the drum brakes system be maintained at any time can stablize, check in time, steady automobile of stopping
In the range of.
Further, the interruption adjustment mechanism is a set of ratchet structure, the ratchet structure includes mutually suitable
The ratchet and pawl matched, the ratchet are socketed on the power intake of the friction plate adjustment bar, and the pawl passes through
Pawl mounting assembly is fixedly connected with external basis.
The preferred mode of the above solution is that the pawl mounting assembly includes pawl fixed support plate and connecting plate,
The plum blossom tooth connection structure being mutually adapted, the pawl are provided on the pawl fixed support plate and the connecting plate
It is mounted on by the pawl fixed support plate in the cantilever crane, the pawl mounting assembly passes through the connecting plate
It is fixedly connected with external basis.
Further, the spline axially extended is provided in the axial centre of the ratchet, in the friction
Spline tooth compatible with the spline, the ratchet and the friction plate are provided on the power intake of piece adjustment bar
The power intake of adjustment bar is connected by the spline with the spline tooth spline.
The preferred mode of the above solution is that the unidirectional power transmission mechanism includes friction ratchet gear axis and pin type transmission
Component, the friction ratchet gear axis is axially mounted in the cantilever crane by the pin type transmission component, described
Unidirectional power transmission mechanism by the friction ratchet gear axis and the interruption adjustment mechanism it is coaxial be mounted on described in arm
On frame,
The unidirectional power transmission mechanism is rubbed described in by the friction ratchet gear axis and the interruption adjustment mechanism
Pad adjustment bar axial order is socketed on the power intake of the friction plate adjustment bar,
The external motivating force inputted by the cantilever crane is matched the pin type transmission component and the friction ratchet gear axis
Friction plate described in unidirectional torsion adjusts bar under conjunction.
Further, being also equipped with the spline axially extended, institute in the axial centre of the friction ratchet gear axis
The power intake of the friction ratchet gear axis stated and friction plate adjustment bar passes through the spline and the spline tooth flower
Key connection.
Further, the pin type transmission component includes friction pin, spring clip and compressed spring, in the cantilever crane
Inner sidewall on be provided with mounting groove for installing the pin type transmission component, axis of the mounting groove along the cantilever crane
To extension；One end is socketed in the friction pin in the compressed spring, and other end apical grafting is on the friction ratchet gear axis；It is described
Friction ratchet gear axis by the inner sidewall apical grafting of the friction pin and the cantilever crane, and pass through the friction pin and the mounting groove
The unidirectional torsion of cooperation described in friction plate adjust bar.
Further, the mounting groove includes straight trough and cone slot, the straight trough is from the big end for boring slot and is somebody's turn to do
Slot connection is bored, the friction pin is axially mounted in the cone slot along the cantilever crane, and the compressed spring is mounted on
In the straight trough；The external motivating force inputted by the cantilever crane is matched the friction pin, cone slot and friction ratchet gear axis
Friction plate described in unidirectional torsion adjusts bar under conjunction.
Further, being additionally provided with rocker arm on the lateral wall of the cantilever crane, external driving force is shaken by described
Arm acts on the cantilever crane.
Further, being provided with mounting hole on the cantilever crane, end is respectively arranged at the both ends of the mounting hole
Plate is interrupted the end of adjustment mechanism and unidirectional power transmission mechanism by institute's art along being mounted in the mounting hole for axial order
Plate is limited in the mounting hole.
Detailed description of the invention
Fig. 1 is that master of the present invention for the automatic adjusting arm of drum brakes system cuts open schematic diagram；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is schematic three dimensional views of the present invention for the automatic adjusting arm of drum brakes system；
Fig. 4 is explosive view of the present invention for the automatic adjusting arm of drum brakes system.
In the figure, it is marked as cantilever crane 1, interruption adjustment mechanism 2, spline 3, unidirectional power transmission mechanism 4, friction ratchet gear axis 5,
Pin type transmission component 6, pawl mounting assembly 7, rocker arm 8, friction plate adjustment bar 9, spline tooth 10, power intake 11, friction
Pin 12, spring clip 13, compressed spring 14, mounting groove 15, ratchet 16, pawl 17, cone slot 18, pawl fixed support plate 19, connection
Plate 20, end plate 21, straight trough 22.
Specific embodiment
It as shown in Figure 1, Figure 2, is that provided by the invention a kind of can voluntarily complete to brake in the process of moving shown in Fig. 3 and Fig. 4
The automatic adjusting arm for drum brakes system of gap adjustment.The automatic adjusting arm includes cantilever crane 1, interruption adjustment mechanism
2 and unidirectional power transmission mechanism 4, the interruption adjustment mechanism 2 distinguish coaxial peace with the unidirectional power transmission mechanism 4
On the cantilever crane 1, the unidirectional power transmission mechanism 4 and interruption 2 sequence of adjustment mechanism are socketed in institute
It states on the power intake 11 of friction plate adjustment bar 9 of drum brakes system；The interruption adjustment mechanism 2 passes through the cantilever crane
The external motivating force of 1 input, it is intermittent under the cooperation of the unidirectional power transmission mechanism 4 and the interruption adjustment mechanism 2
The torsion friction plate adjusts bar 9.The application includes cantilever crane 1, unidirectional power transmission mechanism 4 and interruption by being arranged a set of
The automatic adjusting arm of adjustment mechanism 2, and the unidirectional power transmission mechanism 4 and interruption adjustment mechanism 2 are distinguished into coaxial peace
On the cantilever crane 1, then make the set of the unidirectional power transmission mechanism 4 and interruption 2 sequence of adjustment mechanism
It connects on the power intake 11 of the friction plate adjustment bar 9 of the drum brakes system.In this way, in the friction of drum brakes system
Pad wear to when needing to adjust, can by the cooperation of the interruption adjustment mechanism 2 and unidirectional power transmission mechanism 4,
Friction plate described in due course torsion adjusts bar 9 under the action of the external motivating force that cantilever crane 1 inputs, and reaches in the process of moving certainly
Row completes the purpose of braking gap adjustment, and being maintained at the braking gap of the drum brakes system at any time can stablize, stop in time
Firmly, in the range of the steady automobile of brake.
In above embodiment, in order to simplify the application automatic adjusting arm structure, with reduce design, manufacture at
This, while standardization being facilitated to manufacture again, interruption adjustment mechanism 2 described herein is a set of ratchet structure, the ratchet knot
Structure includes the ratchet 16 and pawl 17 being mutually adapted, and the ratchet 16 is socketed in the power input of the friction plate adjustment bar 9
On end, the pawl 17 is fixedly connected by pawl mounting assembly 7 with external basis.In this way, when drum brakes system
After brake block may wear to certain and degree, the external motivating force that cantilever crane 1 inputs is under the cooperation of the unidirectional power transmission mechanism 4
The distance that the friction plate adjustment bar 9 rotates a tooth around the longitudinal center line of itself could be reversed, intermittent adjustment is reached
The purpose of braking gap.At this point, the installation of the ratchet structure, the preferred structure of the pawl mounting assembly 7 are for convenience
Including pawl fixed support plate 19 and connecting plate 20, it is arranged on the pawl fixed support plate 19 and the connecting plate 20
There is a plum blossom tooth connection structure being mutually adapted, the pawl 17 is mounted on described by the pawl fixed support plate 19
In cantilever crane 1, the pawl mounting assembly 7 is fixedly connected by the connecting plate 20 with external basis, likewise, in order to
The friction plate of drum brakes system is facilitated to adjust the connection of the ratchet of bar 9 and pawl structures, in the axial centre of the ratchet 16
On be provided with the spline 3 axially extended, the friction plate adjustment bar 9 power intake 11 on be provided with and the flower
The power intake 11 of the compatible spline tooth 10 of keyway 3, the ratchet 16 and friction plate adjustment bar 9 passes through described
Spline 3 is connected with 10 spline of spline tooth.It is provided with mounting hole in conjunction on the cantilever crane, in the mounting hole
Both ends be respectively arranged with end plate 21, be mounted in the mounting hole interruption adjustment mechanism 2 and unidirectional dynamic along axial order
Force transfer mechanism 4 is limited to the design feature in the mounting hole, pawl fixed support plate 19 above-mentioned by the end plate 21 of institute's art
It is separately mounted to the two sides of the end plate 21 of respective side with connecting plate 20, is mounted on 19 He of pawl fixed support plate of the end plate two sides
Connecting plate 20 is connected by the plum blossom tooth connection structure.
In above embodiment, in order to not only simplify the structure of the unidirectional power transmission mechanism 4, but also it is able to cooperate the spine
Wheel construction realizes that unidirectional interruption torsional friction piece adjusts bar 9, described herein unidirectional between achieving the purpose that interruption adjustment brake
Power transfer mechanism 4 includes friction ratchet gear axis 5 and pin type transmission component 6, and the friction ratchet gear axis 5 passes through the pin shaft
Formula transmission component 6 is axially mounted in the cantilever crane 1, and the unidirectional power transmission mechanism 4 passes through the friction spine
Wheel shaft 5 and the interruption adjustment mechanism 2 are coaxial to be mounted on the cantilever crane 1, and the unidirectional power transmission mechanism 4 passes through
The friction ratchet gear axis 5 and the interruption adjustment mechanism 2 are described along being socketed in for friction plate adjustment 9 axial order of bar
Friction plate adjusts on the power intake 11 of bar 9, in this way, the external motivating force inputted by the cantilever crane 1 is in the pin type
Friction plate described in torsion that can be unidirectional under the cooperation of transmission component 6 and the friction ratchet gear axis 5 adjusts bar 9.At this point, institute
The pin type transmission component 6 stated includes friction pin 12, spring clip 13 and compressed spring 14, is set on the inner sidewall of the cantilever crane 1
It is equipped with the mounting groove 15 for installing the pin type transmission component 6, the mounting groove 15 prolongs along the axial direction of the cantilever crane 1
It stretches；One end is socketed in the friction pin 12 in the compressed spring 14, and other end apical grafting is on the friction ratchet gear axis 5；Institute
The friction ratchet gear axis 5 stated passes through the friction pin 12 and institute by the inner sidewall apical grafting of the friction pin 12 and the cantilever crane 1
That states mounting groove 15 cooperates the adjustment bar 9 of friction plate described in unidirectional torsion；And described: the mounting groove 15 includes straight trough
22 are connected to from the big end of the cone slot 18 with the cone slot 18 with cone slot 18, the straight trough 22, and the friction pin 12 is along described
Cantilever crane 1 is axially mounted in the cone slot 18, and the compressed spring 14 is mounted in the straight trough 22；By described
The external motivating force that cantilever crane 1 inputs torsion institute unidirectional under the cooperation of the friction pin 12, cone slot 18 and friction ratchet gear axis 5
The friction plate adjustment bar 9 stated.
Further, referring to the connection type of the ratchet of ratchet structure and the power intake of friction plate adjustment bar 9, in institute
State the spline 3 for being also equipped with and axially extending in the axial centre of friction ratchet gear axis 5, the friction ratchet gear axis 5 with it is described
The power intake 11 of friction plate adjustment bar 9 is connected by the spline 3 with 10 spline of spline tooth.Using this
Spline connection had not only facilitated installation, but also the input effect of power can be improved.
Certainly, external driving force is inputted into cantilever crane for convenience, is additionally provided with rocker arm on the lateral wall of the cantilever crane 1
8, external driving force is acted on by the rocker arm 8 on the cantilever crane 1.
Claims (6)
1. a kind of automatic adjusting arm for drum brakes system, it is characterised in that: the automatic adjusting arm includes cantilever crane
(1), interruption adjustment mechanism (2) and unidirectional power transmission mechanism (4), the interruption adjustment mechanism (2) and described unidirectional is moved
Force transfer mechanism (4) is coaxial respectively to be mounted on the cantilever crane (1), the unidirectional power transmission mechanism (4) and described
Interruption adjustment mechanism (2) sequence be socketed in the drum brakes system friction plate adjustment bar (9) power intake
(11) on；The interruption adjustment mechanism (2) passes through the external motivating force that the cantilever crane (1) inputs, and passes in the unidirectional power
The adjustment of friction plate described in intermittent torsion bar (9) under the cooperation of mechanism (4) and the interruption adjustment mechanism (2) is passed,
The interruption adjustment mechanism (2) is a set of ratchet structure, and the ratchet structure includes the ratchet (16) being mutually adapted
With pawl (17), the ratchet (16) is socketed on the power intake of friction plate adjustment bar (9), the pawl
(17) it is fixedly connected by pawl mounting assembly (7) with external basis,
The pawl mounting assembly (7) includes pawl fixed support plate (19) and connecting plate (20), is fixed in the pawl
The plum blossom tooth connection structure being mutually adapted is provided in support plate (19) and the connecting plate (20), the pawl (17) is logical
It crosses the pawl fixed support plate (19) to be mounted in the cantilever crane (1), the pawl mounting assembly passes through described
Connecting plate (20) is fixedly connected with external basis,
The unidirectional power transmission mechanism (4) includes friction ratchet gear axis (5) and pin type transmission component (6), the friction
Ratchet shaft (5) is axially mounted in the cantilever crane (1) by the pin type transmission component (6), and described is unidirectional dynamic
Force transfer mechanism (4) by the friction ratchet gear axis (5) and the interruption adjustment mechanism (2) it is coaxial be mounted on it is described
On cantilever crane (1),
The unidirectional power transmission mechanism (4) is by the friction ratchet gear axis (5) and the interruption adjustment mechanism (2) along institute
Being socketed on the power intake (11) of friction plate adjustment bar (9) for friction plate adjustment bar (9) axial order is stated,
The external motivating force inputted by the cantilever crane (1) is in the pin type transmission component (6) and the friction ratchet gear axis (5)
Cooperation under friction plate adjustment bar (9) described in unidirectional torsion,
It is additionally provided on the lateral wall of the cantilever crane (1) rocker arm (8), external driving force is acted on by the rocker arm (8)
On the cantilever crane (1).
2. the automatic adjusting arm according to claim 1 for drum brakes system, it is characterised in that: in the ratchet
(16) spline (3) axially extended is provided in axial centre, in the power intake of friction plate adjustment bar (9)
(11) the compatible spline tooth (10) with the spline (3) is provided on, the ratchet (16) and the friction plate adjust
The power intake (11) of bar (9) is connected by the spline (3) with described spline tooth (10) spline.
3. the automatic adjusting arm according to claim 1 or 2 for drum brakes system, it is characterised in that: rub described
It wipes and is also equipped with the spline (3) axially extended, the friction ratchet gear axis (5) and institute in the axial centre of ratchet shaft (5)
The power intake (11) for stating friction plate adjustment bar (9) is connected by the spline (3) and the spline tooth (10) spline
It connects.
4. the automatic adjusting arm according to claim 3 for drum brakes system, it is characterised in that: the pin type
Transmission component (6) includes friction pin (12), spring clip (13) and compressed spring (14), is set on the inner sidewall of the cantilever crane (1)
It is equipped with the mounting groove (15) for installing the pin type transmission component (6), the mounting groove (15) is along the cantilever crane (1)
It is axially extending；One end is socketed in the friction pin (12) in the compressed spring (14), and other end apical grafting is in the friction spine
On wheel shaft (5)；The friction ratchet gear axis (5) by the inner sidewall apical grafting of the friction pin (12) and the cantilever crane (1), and
Pass through friction plate adjustment bar (9) described in the unidirectional torsion of the cooperation of the friction pin (12) and the mounting groove (15).
5. the automatic adjusting arm according to claim 4 for drum brakes system, it is characterised in that: the mounting groove
It (15) include straight trough (22) and cone slot (18), the straight trough (22) connects from the big end of cone slot (18) and the cone slot (18)
Logical, the friction pin (12) is axially mounted in the cone slot (18) along the cantilever crane (1), the compressed spring
(14) it is mounted in the straight trough (22)；The external motivating force inputted by the cantilever crane (1) is in the friction pin (12), cone
The adjustment of friction plate described in unidirectional torsion bar (9) under the cooperation of slot (18) and friction ratchet gear axis (5).
6. the automatic adjusting arm according to claim 1 for drum brakes system, it is characterised in that: in the cantilever crane
On be provided with mounting hole, be respectively arranged with end plate (21) at the both ends of the mounting hole, it is described along being mounted on for axial order
It is interrupted adjustment mechanism (2) and unidirectional power transmission mechanism (4) in mounting hole and the mounting hole is limited to by the end plate (21)
It is interior.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580473.2A CN106050998B (en) | 2016-07-21 | 2016-07-21 | Automatic adjusting arm for drum brakes system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610580473.2A CN106050998B (en) | 2016-07-21 | 2016-07-21 | Automatic adjusting arm for drum brakes system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106050998A CN106050998A (en) | 2016-10-26 |
| CN106050998B true CN106050998B (en) | 2019-02-01 |
Family
ID=57417036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610580473.2A Active CN106050998B (en) | 2016-07-21 | 2016-07-21 | Automatic adjusting arm for drum brakes system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106050998B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2251070Y (en) * | 1996-04-12 | 1997-04-02 | 张江海 | Automatic braking regulator |
| US8672101B2 (en) * | 2008-11-18 | 2014-03-18 | Bendix Spicer Foundation Brake Llc | Automatic slack adjuster with clutch release cam |
| CN105673727B (en) * | 2016-03-24 | 2018-07-27 | 无锡市神力齿轮冷挤有限公司 | It can prevent from failing the one-way clutch of two-way skidding because of support spring |
| CN205806289U (en) * | 2016-07-21 | 2016-12-14 | 吴林 | Automatic adjusting arm for drum brakes system |
-
2016
- 2016-07-21 CN CN201610580473.2A patent/CN106050998B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106050998A (en) | 2016-10-26 |
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Effective date of registration: 20211214 Address after: 617064 vanadium titanium high tech Industrial Development Zone, Panzhihua City, Sichuan Province Patentee after: Panzhihua Lindong Technology Co.,Ltd. Address before: 617065 No. 9, unit 1, building 1, No. 10, Fangcao lane, West District, Panzhihua City, Sichuan Province Patentee before: Wu Lin |