TW419427B - Pressure differential operated brake booster - Google Patents

Abstract

A pressure differential operated brake booster includes a housing, a partition adapted to divide the interior of the housing into two chambers, and two diaphragms adapted to divide the two chambers into constant pressure chambers and variable pressure chambers. A control valve includes a valve body carried by the diaphragms, and a plunger slidably received in the valve body. The control valve is operatively connected to the variable pressure chambers to cause the diaphragms to move in response to actuation of an input rod so as to develop a pressure differential. A reaction disk is disposed between an output rod and the valve body to transmit the reaction of movement of the output rod to the input rod. An adjusting mechanism is disposed between the plunger and the reaction disk and includes a contact member normally spaced from the reaction disk, and a large diameter compression spring disposed between the contact member and the plunger and preloaded with a predetermined force. The compression spring is so compressed as to provide an increased boost ratio when a force equal to or greater than the predetermined force is applied to the input rod during an emergency braking operation.

Description

^ 27i a7 B7 Printed by the Consumer Cooperatives of the Central Bureau of Standards and Assistance of the Ministry of Economic Affairs V. Description of the Invention (1) I 1 Background 1 The present invention relates to a pneumatic rib-type force device for automotive brake systems. Code: 1 i J The known tandem servo rib device includes a frame t fixed in the frame, please ask the back 1 II to divide the inside of the frame into J t. U, the partition plate of the rear pressure chamber, and the partition plate located on the partition plate. III The two diaphragms facing each other and suitable for dividing the interior of the front and rear pressure chambers into M 刖 Λ 1 1 and two diaphragms of the constant pressure and variable pressure chambers (see Figure 5) > The partition and the partition > Wang Yishi 1! The membrane is fixed to — the valve body 0 — * the output rod is pseudo-filled with — ^ the item made of synthetic rubber 1 1 The reaction disc is connected to the valve body 0 — 'The input system is the same as the output stem. I-axis and connected to a slideably received valve The plunger 1 I 1 (p 1 unger) in the body = the front and rear constant pressure pressure chambers are in constant communication with the vacuum source> usually the I 1 I plunger is pushed into its retracted position M to maintain all four pressure chambers It is connected to the vacuum source of 1i, 1 and 0. When the brake pedal is depressed, the input force is added to the input stem. X actuates the plunger. The plunger is left by a valve seat after the fall. Interruption! 1 The constant pressure The vacuum between the scraping chamber and the pressure-change pressure chamber is communicated and sequentially causes 1 I surrounding air to enter the front and back pressure-change pressure chambers. 0 In the pressure-change pressure chamber! When there is air, a pressure difference is developed across the front and rear diaphragms. 〇 The pressure difference i I acts on the diaphragm and develops the force that is introduced into the valve body and distributed into the input I 1 | out of the lever. 〇 In addition to the initial braking stage, the output force is increased when the wheel-in force is increased by 1, Increases linearly (see Figure 6 Line F) 0 So in case 1 When a large braking force is required in an emergency situation, the system must be pressed down 1 ffilt pedal 0 II. Therefore, one of the huge systems of the present invention provides a specially defined boost ratio II change point The pneumatic brake booster M is specially designed to obtain the desired boost ratio during emergency braking operation I 1 This paper standard applies Chinese National Standard (CNS) regulations (210X29? Public) ^ 1 39493 • V ′ V. Description of the invention (2) 琎 明 Introduction The central government bureau of the Ministry of Economic Affairs, the consumer co-operative cooperatives of India, the brake control, and the use of drills can be used to make the phase difference of the mechanical strength of the regular production system When the machine is pressed out, it is used for safety. After that, the vehicle ’s operating source includes the body number, the base operation is connected to an output system, and the system can output the anti-mechanism. The machine's anxiety, Yu; True; the door is extended into the system, and the exhibition should be used when the machine is used to compact the valve and the valve; The transfer machine is scheduled to be drilled by the seed machine, and the machine should be controlled. The reversing plug pre-crash machine, which contains the surface-loaded sophomore machine, can be returned to the machine; . Into. For contracting and dividing walls, the first plug system is tightly adjusted and the noodle system is adjusted. With this, the volume-to-output ratio setting part moves around the column machine on the machine wall machine due to the system's normal and spring force. This force is installed inside the system and the input and output of the machine. The force frame can be turned off when the output valve wall of the machine is broken. The structure of the auxiliary machine can be delivered without the force of the hole. The brake can be sent. The mechanism is to control the transfer of the system to increase the amount of the package-the power drive a hole machine-the machine can be exceeded in the machine power and the load is placed in the pressure body first drill plug, the cross section Use, install the appropriate pressure on the negative equal channel, the two columns can be used to build the inter-wall pre-heating and two-side lifting force, and change the door to the system to counteract the countermeasures. The first can be assisted inside and by the valve next to the amount of movement, the motivation and force to move the body to the built-in rack and the meaning is in force, the movement can be moved to JL *, the measuring path will be reduced to the pressure Within the power, set the drilling force of the door mover in the working room! The pressure of the pressure system, the proper operation of the pressure mechanism, and the second phase of the valve system can be used to set the valve in the press mechanism and the pressure should be lost. The maneuvering system is under pressure to return and the person should be assigned to change the state of the hole-making slide system; the pre-movement to the lost state (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) Λ4 specification (2 丨 OX297 male left) 3949 3 2 4 9 «J / Λ

A B7 Attachment Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs and printed in the middle of the body 0J ΠΓ The valve should be in Yiding 1 Including the machine hole 可 (The second Ming Dynasty said that the Ming Dynasty, the fifth 3 The back hole should be drilled in the diameter of Yiyi straight Set a large hole and a small hole with a continuous diameter and a straight and large hole making hole. Drilling hole diameter is 1 straight. A large hole should be used as a hole in the hole between the hole and the hole. The diameter of the drill package can be straight or small, and the same part should be placed to touch the slide. The hole can be drilled and the diameter of the small machine is used to make a direct reversal. In the first place, the inner part of the hole element drill-shaped diameter column straight round sophomore, the first and the first put the first, the piece to the Yuan shape attached column with a circle, and the guarantee is included, the package is connected next to each other. The mechanism can be adjusted to adjust the adjustment of the defense. Then go to the edge of the edge of the machine's convex hole in the second second column of the machine and the holding of the spring and the spring contact with the seat structure can be set to large diameter can be Straight spring can be compressed with compression And 〇 »The spring of the seat spring, the convex contact of the connection structure, the plug connection includes the step 1 can be adjusted, the machine can adjust the 0 straight pieces of the element-shaped column circle 1, the structure of the piece can be integrated. Doing this operation can adjust the point of the structure and adjust the spring load of the spring to the compression point of the elastic system, and adjust the end of the spring to the compression point of the elastic system. The brake system is urgently required to measure the second force. When the spring reed can be used at the worst pressure, the machine's surface wall can be moved. The time system should be overridden. It should be operated from the large to the plus interval. The movement of the facial wall made by the development pressure station in the measurement of pressure and pressure can be entered in two rounds when the time is exceeded, and the hair growth is the worst. Ο The large out of the exhibition fan speed reduced the socks' face wall period. Action shift can move the system too quickly and tightly (please read the precautions on the back before filling this page) Order --------- line! Hours 1 and the next car in

Degree Speed Booster SB Transverse Installation Force Rib Linking Series 1 Department of Art and Technology, Knowledge Institute _ The first paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 3 (correction page) 3949 3 419427 Magic 137 V. Description of the invention (4) Surface view; The first display is the structure of 11 windows, the figure of the window structure is shown in Fig. 2, the machine is in 3 shapes, and the force is rectified, modified, adjusted, and adjusted. Adjusting the force to show the dynamic display technique; the front view of the figure is a section of the horizontal diagram display example 2, the middle ratio, the i csi map big ΐ 1 ΜΜ The first-type system 悌 set Installed to assist in the production of technical skills, you should first show the figure 3 to the input. Before installing the power assist technology, you should show the first display of Figure 5 and Figure 6; the figure of the figure shows the amount of curve and the power of the Mingfa, according to the root system to lose 3 i figure to the 7th amount of force into the Fig. 1 Example of spring application for the first entry and installation group (please read the precautions first) Please fill in this page again. The diagram in the help display is shown in large scale. The surface structure of a picture is shown in the figure. The horizontal structure adjustment machine is shown in the adjustment. Figure 1 of the first class ο 9 Figure 10 of the 3rd display of the first machine adjustment and adjustment of the first display of Figure 3 Figure 8 of the display of the first adjustment of the display and the view of Figure 1 of the 7th Ministry of Economic Affairs Central Standardization Bureau! ^ Industrial and consumer cooperatives print plus 0 and the most powerful losers. The loser loses 1 loan; the W-type system diagram is changed. 11住 Live to know more than the line of the compressed air series of knowledge 1 Explained Example 0 Figures 2 and 1 of the reference test in the existing installation of the power-assisted system An 4 1 × bolts and more include borrowing The installation of the paper will help you to show the / f \ collision auxiliary vehicle 1 to the mounting machine of the freshman department 2 1 machine. The paper size applies to Chinese national standards ((: ~ 5) / \ 4 gauge Taiwan (2 丨 0 / 297 公出） 4 394 93 • 4 ^ 'A 7 B7 V. Description of the Invention (5) (Read first) Note again fill the back of the page) grave side 12a of cylindrical, and are fixed to the side wall 12a of the front end two opposite, rear wall 12b, 12c are configured. A substantially annular partition 16 is fixed in the frame 12, and the interior of the frame is divided into a front chamber 18 and a rear chamber 20. A tubular member 22 is carried by an annular bearing seal 24 | K allows sliding operation between the tubular member 22 and the partition 16. The two diaphragms 26 and 28 are located on two opposite sides of the partition plate 16. One end of the front diaphragm 26 is fixed to the inner periphery of the frame 12, and the other end thereof is fixed to one end of the tubular member 22. The front diaphragm 26 is adapted to divide the inside of the front chamber 1? Into a front constant pressure pressure chamber 18a and a front variable pressure pressure chamber 18b. A substantially annular pad or piston 30 is attached to one side of the front diaphragm 26, and one end thereof is fixed to the discreet member 22. As shown in FIG. Similarly, one end of the rear diaphragm 28 is fixed to the inner periphery of the frame 12, and the other end thereof is fixed to the other end of the tubular member 22. The rear partition 23 is adapted to divide the inside of the rear chamber 20 into a rear constant pressure chamber 20a and a rear variable pressure chamber 20b. A generally annular pad or piston 32 is attached to one side of the rear diaphragm 28, and one end thereof is fixed to the tubular member 22. The pads 30, 32 are usually biased to the right by a return spring 34 (see Fig. 1). The return spring 34 is placed in the frame. The structured tube and the b 2 1X wall part. The structured tube is connected to the 6 3 substandard BJ ΗΓ valve's column. * Round and large-scale wear-through extension valve can be lifted up and down. Point the inner side of the bearing end 8 3 The praise of the rear hole 6 Record 3 The body is in this, the door 8 Ϊ 3 The valve hole should be drilled. One system has a valve and a shape control seal. The ring is connected to the 2C C 1 12 surface wall wall square frame of the P center. The side seals the seal to the rear. The in-situ ground axis is in the same system. 2 4 lever output spring f-spring position should be worn through Φ * fl extended to the inner 2 2 pieces of shaped tube 2 4 lever output. This paper scale is applicable to Chinese National Standards (CNS) Λ4 is present (2! 〇Χ2ί > 7 public trend) 5 3 9 49 3 Printed by the Consumers ’Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs- ^ > λ ^ τ Λ 7 ^ · / .. V. Description of the invention (6) The endpoint is connected to the valve body 36 The front end and the other end slidably extend through the central opening of the front frame wall surface 12b. As is known, the output lever 42 is connected to a liquid brake pump (not shown) of a vehicle auxiliary brake system. A synthetic rubber reaction disc 44 is placed between the wheel exit lever 42 and the valve body 36. The input lever 46 is the same sleeve as the output guard 42. One end of the input shaft 46 is operatively connected to a brake pedal (not shown) to control the control valve mechanism. The other end of the input rod 46 is slidably extended into the counterbore 38 of the valve body 36 and engages the plunger 50. The plunger 50 is slidably received in a plunger bore 52 formed in a valve body 36 adjacent to the counterbore 38. The plunger 50 has a poppet valve member 50a, and when the rib force device 10 is in the released position shown in FIG. 1 thereof, the poppet valve member 50a is seated under the influence of a pair of strong springs 56, 58 Wide seat 54. The plunger 50 also has a flange 50b received in the plunger bore 52. The front and rear constant pressure pressure chambers 18a, 20a communicate with each other through a passage 60. The front and rear pressure-transformation pressure chambers 18b, 20b are also communicated through the passage 62 at the same time. The diaphragm hole 38 of the valve body 36 communicates with the surrounding atmosphere through the diaphragm 64 at any time. When the poppet valve member 50a is removed from the valve seat 54 or when the brake pedal M is depressed to force the input rod 46 toward the reaction disc 44, the passage 62 is also in the pressure-change pressure chambers 18b, 20b. A fluid communication is provided between the holes 38. -A check valve 70 is mounted to the frame 12 and connected to a vacuum source 74, such as an engine intake pipe vacuum, via a conduit 72. The front and rear constant pressure pressure chambers 18a, 20a are in constant communication with the vacuum source 74. Usually the plunger 50 is in the reset bomb (please read the precautions on the back before filling this page). Ding,-° This paper size is applicable to the Chinese National Standard (CNS) Λ4 specification (21 0X297) 炱 3 9493 41942T Description of the invention (7) The spring 34 pushes down its retracted position (or brake relaxed position). At this time, the M-linkage communicates with the 7-phase source body, and the real-time connection between it and 2 6 is guaranteed, and the 6-series road b communicates with 20 each a ', and the 20 permits b to 18 a, 8. The valve of the four machines was controlled by the control system, which resulted in a failure. The plate-made treadmill actuates the valve to control the pressure action. M difference 46. The pressure lever is in and out. The excess force is applied to the membrane before it is separated. The input structure is 0Ά ο See 2 liters £ 0 is 8 s 1 The valve force of the chamber and a seat chamber The pressure changes the pressure The pressure caused the M Ms Xie's reaction and the phase between the phase and the air to be true b ο channel 2 through b,] 8 from 1 by the chamber pneumatic air pressure confining pressure change to allow this permission ο before the room pressure pressure change The inlet b ο membrane differential pressure 1 out δ

The time plate air cushion should be empty. There should be a built-in inner K. After passing the 8 2 6 2 diaphragm and rod, it should be reversed. Move to 42 plus the lever. The pump should be pushed by the total hydraulic force after 泾 »and then borrowed to the left and move to Μ ί 2 and move 4 as ο. The 46 valve rod control system of the machine should be controlled by the system. The ring 44 can be used for disk operation, and the system can be used as 80 inversion. The machine can be adjusted by warping to force a column. The disc is used to install the 44 as a safety plate and the ground is used. The function is usually reversible and the 80 and 50-round machine plugs on the plug should be adjusted. The quality should be included. To the Biggest One * 80 The inner structure display 52 should be equipped with a drill adjusting plug in the whole machine, and 3V contact (please read the precautions on the back before filling this page) -11 when the contact sleeve 44 is connected The disc should be used. The circle is made by 90 and stretched by 88 and tied as a spring. 50 is rolled. The screw rebounds and the column force is 8882. The fixed spring disc resists the pre-ball circle and maintains a contraction. 84 keep the crimp to 92 springs to break the spring--into the head can not be 84 _ a 50, the spring has a directional hole 82 spring 84 screw towards the blind disc spring seat tie point 82 a round spring point The end plate has a contact spring with a round end connected with the other contact 50 of 86 and its plug opening cylinder 82 and the column spacer disk 8690 forcing the 44 a cylinder bolt drive, of which 9 bolts and the socket Floor slip can be tBy 0% This paper size is applicable to Chinese solid standard (CN-S) Λ4 specification (210X297). 3 9 49 3 A7 Good " Ministry of Central Government Standards Bureau, male T, printed by consumer cooperatives

4194ZT __B7 V. Description of the invention (3) Head 92. The contact disc 82, the compression spring 38, and the strong spring seat 84 are arranged in series in a sleeve direction and fixed by the bolt 90, and M provides a single unit or a partial fitting. In operation, when the booster device 10 is in its brake release position, the valve body 36 and the plunger 50 are forced to the right (see Fig. 1). All four chambers are now in communication with the vacuum source 74 at this time. Because there is a pressure difference across the diaphragms 26, 28, no thrust is applied to the output rod 42. When the brake pedal (not shown) is initially depressed, the plunger 50 is caused to move slightly toward the reaction disc 44. As a result, the poppet valve member 50a exits from the valve seat 54 to allow the surrounding air to flow from the borehole 38 through the passage 62 and a passage (not shown) to the pressure-change pressure chambers 18b, 20b. It is shown that the passage is formed axially in the inner wall surface of the valve body 38 adjoining the flange 50b of the plunger 50. When there is air in the variable pressure chambers 18b, 20b, a pressure difference develops across the diaphragms 26, 28. The pressure difference causes the pads 30, 32 and the tubular member 22 to move to the left in the first figure. This movement is then transmitted to the output lever 42 via the reaction disc 44. Although the input power remains essentially the same, the output power increases sharply. This change or phenomenon is generally called "jump-in effect in the industry" (see line F1 in Fig. 4). At this time, a gap still exists between the reaction disk 44 and the contact disk 82. In this way, no reaction force is transmitted to the input guard 46. When the relay presses the brake pedal, the output force or reaction force gradually increases. As a result, the reaction disk 44M is compressed and enlarged to cause contact with the contact disk 82 The reaction force part is then transmitted to the input rod 46 (see line F2 between line F1 and F3 in Figure 4). This paper size applies to the Chinese garden house standard. Λ4 size (2H ^ < 297 gongchu) " " 8 39493 (Please read the notes on the back before filling out this page)

A7 B7 In the Ministry of Consumer Affairs, * marked by the local government T, printed by the consumer cooperative ^ V. Description of the invention (9) 1 j When the reaction force becomes greater than the compression force or the preload I of the spring 88 is compressed, the spring is compressed. 88 to allow the contact disc 82 to move toward the spring 1 1 seat 84 in other words i the contact disc 82 and the valve body 36 adjoin the counter-request 1 1 1 the distance between one end of the action disc 44 increases by 0 so > The output power increases significantly more than reading 1 1 ("Second Jump Effect") * As shown in Figure 4 in the middle 1 ί As shown in the middle line F3 0 Caution 1 1 When the input person When the force increases, the contact disc 82 moves toward the spring seat item 1 1 84 until it comes into contact with the free end of the sleeve Cδ6 C. When the contact disc S2 contacts the writing ψ I the contact circle when the sleeve 86 The distance between the disc 8 2 and the end point of the valve body 38 I 1 I The relationship between the quantity and the output force is returned after the demon. 1 1 I to the line F 1 and F 3 between the lines in Figure 4 F 2 relationship 3 1 1 When the input power is further increased in the pressure change pressure chamber 18b, Set the pressure in i 20b to atmospheric pressure >> No movement across the diaphragm 26, 28 — step 1 1 The pressure difference produces 0 so the operator must provide all the excitation or mechanical force 1 1 amount for moving the fir. Output stalk-and therefore pressurize fluid 1 • 4, in the hydraulic brake master cylinder (see line F4 in Figure 4). 1 Ι When the brake pedal is released 9 The plunger 50 and the valve body 36 return 1 1 I return to its original position 0 This makes all the four chambers communicate with the vacuum source 74 0 ί the valve body 3 δ 'and The plunger 50 then returns to the position of the return spring! Its retracted position 〇 1 1 Refer to Figure 3, where similar reference numerals are used to indicate similar or corresponding parts shown in Figures 1 and 2 A disc spring 94 replaces the compression spring 1 1 spring 0. In this case, the disc spring 94 should remain between the spring seat 84 and the 1 1 I sleeve 96. The sleeve 96 is contacted by the disc. 82 extends towards the spring seat 1! The degree of success depends on the standard of the house (called Na (training X flap potential) 9 3 9 4 9 3 A7 B7 V. Description of the invention (1 ο) 84 and part of the assembly surrounds the Sleeve 86. It should be noted that in order to enhance the "second jump effect (see line F3 in Fig. 4)", it is necessary to reduce the spring constant, that is, to increase a spring Number or diameter. However, an increase in the number of spring turns results in a corresponding increase in the axial length of the valve body and therefore an increase in the uranium length of the entire booster. Therefore, it is better to increase the diameter of a spring, as in Section 7 As shown in the figure, reference is now made to FIG. 7, which illustrates an adjustment mechanism 100 assembled according to the example of the present invention and designed to be slidably mounted in the valve body 36 of the pneumatic booster shown in FIG. Similar parts are given similar reference numerals and will not be described in detail. A large-diameter hole 102 is formed in the valve body 36 and is adjacent to a plunger hole 52 in which a plunger 103 is placed. The small-diameter hole 104 is also Defined in the valve body 36 and adjacent to the large-diameter borehole 102. A step or shoulder 105 is formed between the large-diameter borehole 102 and the small-diameter countersunk hole 104. For illustration, the adjustment mechanism 100 includes A contact member 106 receives the reaction reaction force of the output rod 42 via the reaction disc 44. The contact member 106 is slidably mounted in the small-diameter bore 104 and is generally separated from the reaction disc 44 A cylindrical member 108 is fixed to the cylindrical member 108 and a flange 110 slidably installed in the large-diameter borehole 102 and a cylindrical member 112 fixed to the flange 110. A spring seat 114 is slidably placed in the large-diameter sickle hole 102. The strong spring seat 114 is an annular flange slidably installed in the large-diameter bore 102 and maintained in contact with the plunger 103-the end point 116, and a hollow cylindrical member 118 extending from the flange 116 toward the cylindrical member 112. This cylindrical element ^ paper size applies to China Garden Standard (CN'S) Λ4 specification (_ 210 × 297 mm) ΓΊ, Q. 〇, (Please read the precautions on the back before filling this page)

-1T Printed by the Central Ministry of Health and Labor Bureau, male laborers' consumption cooperation, the paper size is suitable for 1¾1¾ standard (CNS) Λ'ί size (210X 297 mm) 3 9 49 3 :, Γ 4194 27 A7 / vi 27_b7__ 5. Description of the invention (11) 118 has an opening 119. A compression spring 120 is placed in the large-diameter bore 102 between the flange 110 and the flange 116. A bolt 122 is adapted to adjust the compression force of the spring 120. As shown in FIG. 8, the bolt 122 preferably includes an unthreaded portion 124 and a head 126. The head 126 is fixed to one end of the unthreaded portion 124 and is slidably placed on the end. Inside a hollow cylindrical element 118. The other end of the unthreaded portion 124 is forced into the cylindrical member 112 of the contact member 106. The unthreaded portion pseudo-extends through the opening 119 of the cylindrical member U8. Conveniently, the compressive force or pre-load of the spring 120 can be easily adjusted in response to the number of the unthreaded portions 124 inserted into the cylindrical member 112. Alternatively, a thread 128 may be formed at one end of the bolt 122 and screwed into the cylindrical element 112 as shown in Fig. 9. With the adjustment mechanism 100 thus constructed, the diameter of the spring 120 is larger than the diameter of the cylindrical element 106. As such, the spring 120 may have a spring constant less than that of the spring 88. The contact member 106, the compression spring 120, and the spring seat 114 are axially arranged in series and fixed with the bolt 122 to form a single unit or a partial accessory. The contact member 106, the compression spring 120, and the spring seat 114 as a partial fitting are inserted through one end of the large-diameter bore 102 adjacent to the plunger bore 52. At this time, the flange 110 of the contact member 106 is used as a stopper K to prevent the partial fitting from being loosened from the other end of the hole. As shown in Figure 8 * when the rib force device is in its released position, the length of the partial fitting is L. Because the length L is slightly smaller than the distance between the reaction disc 44 and the flange 116 of the spring seat 114, the gap 130 is defined at 11 (please read the back: ^ Matters before filling this page)

* 1T ‘4194 2 A7 B7 V. Description of the invention (12) Between the reaction disc 44 and the cylindrical member 108 of the contact member 106. The circle of 6 ο ^ — * pieces of structure are in contact with the locking screw or λ, and the driving force is also the same as 2 2 Ί- bolts. The gap has a range of 1 to 1, and ο 8 1 1 pieces. Shaped cylindrical column circle and 2 1 11 pieces of shaped cylindrical circle should stay in the same time as the 6 2 1 head of the 4 2 11 bolt screw element shaped cylindrical circle-ο 1 in the empty part of the contact and 6 springs shrunk the pressure against the moving Z phase shift giftc from f to 4 from the inside 4 yellow 20 with 11 as the seat I should be able to cope with this gap. Xiaozhi big match these 32 have 1 The structure of the machine RTS * the first operation; the spring spring bullet should be completely changed due to the same effect as the '蹓. Count the mass ratio of the 88 and the spring spring system bullet 20 y / 1 』The installation compartment 1 can be drilled 4 ο 11 hole diameter straight 0 decimal number of the constant-spring map bullet 10 The 8th t S test spring plays the installation compartment. The molding station 6 3 11 The interior point end 1 of the 8 3 body 5 3: the valve plate The round tool can be used as the most reactive. It can be connected to the 36 adjacent body. (Please read the precautions on the back before filling this page.) '11 recessed wall 6 3 1 install the compartment the socket 1 In the interest of HP TTfs, the installation of the change requires only the straight parts of the change structure to be connected to the change. The change requires a full copy of the 0J P valve printed by the Ministry of Standards and Work ’s Consumer Cooperatives. The spring-loaded spring should be the K load plus the preload and the pressure will be fixed. 1 Use it best. 2 Spring spring should be used. To 8 plus, 2 to 26, the amount of membrane force should be set as soon as the over force is exceeded, and the contraction will be reduced to the time of the pressure. 2 _ _-J for emergency supply or 12 differential spring pressure. The degree is greater when compared to others. The output Λ helps to increase the number of constant spring bullets. 1 There is a good one. 2 1 Spring bullets. The figure in the display is 1 ×. The diaphragm is operated in a timely manner. The paper size of Zhizhi Zhanfa is applicable to China® Home Standard (CNS) Λ4-present grid (210X 297 mm)

2 1X 3 9 4 9 3 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs_B7_ V. Description of the invention (3) The difference P2 is 1.3 to 2.0 times greater than the limit difference PU developed during normal braking operation. The deceleration range of Che Fu's deceleration range from 0.3 gravity acceleration to 0.4 gravity acceleration. The spring 120 also suffers from cramping at the same time. Thus, the force required to depress the brake pedal during emergency braking operation is the lowest. As shown in Fig. 11, holding the difference P2 up to a full-load position PP causes the cylindrical member 112 of the contact member 106 and the cylindrical member 118 of the spring seat 114 to contact each other. Accordingly, there will be no such system during the emergency braking operation.

The power is the lowest. Although the present invention has been described in its preferred embodiment, it is not limited to this. Various modifications and changes can be made without developing the spirit and scope of the present invention. 0 For example, t The present invention can be applied to a single servo booster instead of the Chuancong booster booster. 0 At the same time, it can be replaced by a reaction-reaction lever. The disk carries the reaction force of the output rod. 0 Note 1 Description 10 Booster 12 stent 12 a side wall 12b 12 c wall quotient 14 kneading bolt 16 partition 18 screed 18a% 20 a fixed screm 18s, 20b squeegee screed 20 screed 20 rear chamber 22 tubular member 24 stell bearing seal 26 Λ 28 m 30 spacer 32 piston 34 Ν 56 、 58% 88% 94 120 Mi spring 36 Valve body 38, 52 Perforated paper Standards apply to 1f1 National Standard (CNS) A4 specifications (210 X 297 mm) T949J (Please read the precautions on the back before filling this page)-^ 1 1 ^ — ϋ »i 一 = 口 TI —in I tf * n I 1 nnn .. t— I s {M tK Μ) 4 19427 A7 B7 V. Description of the invention < M-1) 40 Ring seal 42 Output rod 44 Reaction disk 46 TWI input rod 50. 103 column Plug 5 0a Poppet valve member 50b, .110 > 116 Flange 5 0c Blind hole 54 Valve seat 60, 62 channels 64 Transmitter 70 ih Return valve 72 Conduit 74 Vacuum source 80, 100 Adjusting sickle 82 Contact disc 84 Spring seat 86% 96 Sleeve < 泛 Read the general information on the back before filling out this page) Λ Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy 90, 122 Bolts 92, 126 Head 102 Large diameter drilling 104 Small diameter Drilling hole 105 Shoulder 106 Contact member 108, 112, 118 Cylindrical element 114 Spring seat (cylindrical element) 119 Opening 124 Unthreaded part (bolt) 128 Thread 130, 132 Clearance 136 Spacer 138 Wall recess F1, F2 , F3, F4, F lines P1, P2 Force ratio (scrape difference) PF Full load position L Length PT Change position ί-I-* — — — — — — 1 —-lllfhlIljlllllllllfllllllli This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 13- 1 (repair TH page) 39493

Claims (1)

Λ1942 H3 No. 87101034 patent application for patent application 圔 revised version (81.¾ January 13¾) 1. A pneumatic brake booster for vehicle braking system, including: frame; movable wall mechanism, operable It is arranged in the frame and is suitable for dividing the inside of the frame into a constant pressure pressure chamber and a variable pressure pressure chamber which are in permanent communication with the vacuum source: a plunger, which is contained in the frame and is moved by the movable wall mechanism The control valve mechanism of the carried valve body, the valve body has a first drilling mechanism that continuously communicates with the surrounding atmosphere, a second drilling mechanism defining an adjacency to the first drilling mechanism *, and is movably placed on the second Inside the drilling mechanism; the input mechanism extends into the frame and is suitable for actuating the plunger; the control valve mechanism is operatively connected to the pressure-transformation pressure chamber, and can be developed across the movable wall mechanism to develop a The pressure difference causes the movable wall mechanism to move in response to the action of the input mechanism; the output mechanism responds to the movable wall mechanism; staff welfare member of the Central Standards Bureau of the Ministry of Economic Affairs A printed reaction mechanism arranged between the output mechanism and the valve body for transmitting a reaction force from the output mechanism to the input mechanism; and an adjustment mechanism for adjusting the reaction force from the output mechanism to the input mechanism, The adjustment mechanism is placed in the second drilling mechanism and is compressible. 俾 When the input mechanism is subjected to a force greater than a predetermined degree, it can cross the movable wall mechanism to raise a large pressure difference. ： This paper size applies to 8 national standards (CNS) A4 specifications (210X297 public love) 1 39493 H3 The second countersinking mechanism includes a large-diameter drilling defined adjacent to the first drilling mechanism, and the definition of the adjacent The adjustment mechanism includes a contact member and a spring, and the contact member is slidably disposed in the small diameter drill hole, and when the input mechanism is in an inactive state, Separate from the reaction mechanism; the spring is arranged in a large-diameter borehole * and extends between the contact member and the plunger, and the spring has a larger diameter than the small-diameter borehole. ; Get free of the contact member toward the plunger moves, the valve body is not disturbed and only axially supported by the plunger. 2. The pneumatic brake booster according to item 1 of the scope of patent application, wherein the spring is pre-loaded with a predetermined compressive force so that spring compression does not occur during normal braking operation. 3. The pneumatic brake booster device according to item 2 of the patent application, wherein during the emergency braking operation, if the input mechanism output exceeds a predetermined compression force, the assist ratio will be increased. Printed by the Staff Welfare Committee of the Central Bureau of Standards, Ministry of Economic Affairs. 4. The pneumatic brake booster based on item 3 of the patent application, in which the assist ratio during emergency braking operation is 1.3 to 2.0 times greater than that during normal braking operation. Boost ratio. 5. The pneumatic booster according to item 4 of the scope of patent application, wherein when the vehicle decelerates in the range of 0.3 to 0.4 gravitational acceleration, the assist ratio during emergency braking operation can be obtained. 6. The pneumatic brake booster device according to any one of claims 3 to 5, wherein when the pressure-varying pressure chamber has a pressure equal to the atmospheric pressure, it is urgent that this paper standard is commonly used in the gg home standard (CNS) A4. Specifications (210X297 public love) 2 39493 H3 The assistance ratio during the braking operation printed by the Employee Welfare Committee of the Central Standards Bureau of the Ministry of Economic Affairs is continuous. 7. A pneumatic brake booster for a vehicle braking system, including: a frame; a movable wall mechanism operatively disposed in the frame, and suitable for dividing the interior of the frame into a permanent communication with a vacuum source A pressure chamber and a variable pressure chamber; a plunger comprising a control valve mechanism of a valve body disposed in the frame and carried by the movable wall mechanism, the valve body having a first bore hole that is continuously in communication with the surrounding atmosphere A mechanism, a second drilling mechanism defining adjacency to the first drilling mechanism, and movably placed within the second drilling mechanism; an input mechanism extending into the frame and adapted to actuate the plunger; the The control valve mechanism is operatively connected to the variable pressure pressure chamber, and can develop a pressure difference across the movable wall quotient mechanism, so that the movable wall mechanism moves in response to the action of the input mechanism; the output mechanism, In response to the movable wall mechanism; a reaction mechanism configured between the output mechanism and the valve body for transmitting a reaction force from the output mechanism to the input mechanism; and an adjustment mechanism Structure for adjusting the reaction force from the output mechanism to the input mechanism. The adjustment mechanism is arranged in the second drilling mechanism and has compressibility. When the input mechanism output is lower than a predetermined level, it can provide A higher assist ratio: The adjustment mechanism includes: a contact member disposed in the second drilling mechanism, and when the input mechanism is in an inactive state, the reaction can be affected by the reaction. This paper size applies the Chinese National Standard (CNS ) A4 specification (210X297 at public expense) 3 39493 419427 H3 mechanism is separated; and a compression spring is arranged between the contact member and the plunger; the contact member can move freely toward the plunger without disturbing the valve body, and only borrow the The plunger is supported axially; when the input mechanism's output exceeds a predetermined level, the compression spring system can compress and continue to compress until the pressure change pressure chamber has a pressure equal to atmospheric pressure. Printed by the Staff Welfare Committee of the Central Standards Bureau of the Ministry of Economic Affairs The paper size is in accordance with the Chinese National Standard (CNS) A4 specification (210X297 public director) 4 39493