KR920007842B1 - Hydraulic remote control system - Google Patents

Abstract

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Description

Hydraulic Remote Control System

1 is a schematic diagram of a steering system for a rearview mirror according to the present invention;

2 is a cross-sectional view of the casting seed device for the system shown in FIG.

FIG. 3 is a cross sectional view of a housing of a backmiller with an adjustment system as shown in FIG.

4 is a cross-sectional view schematically showing a casting seeding device and a slave device of a remote control back-miller according to another embodiment of the present invention.

FIG. 5 is a schematic diagram showing a portion in which a part of the embodiment shown in FIG. 4 is changed. FIG.

FIG. 6 is a cross-sectional view of the casting seed machine that may replace the embodiment shown in FIG.

7 is a cross sectional view along line 7-7 of FIG.

FIG. 8 is a cross sectional view of another casting machine similar to FIG. 6. FIG.

9 is a cross sectional view along line 9-9 of FIG.

FIG. 10 is a cross-sectional view of another casting seed device for use in the embodiment shown in FIG.

11 is a cross sectional view along line 11-11 of FIG.

12 is a longitudinal sectional view of a housing of a hydraulic connection for use in an embodiment of the invention.

13, 14 and 15 are longitudinal sectional views taken along the lines 13-13, 14-14 and 15-15 of FIG. 12, respectively.

16 is a longitudinal cross-sectional view of a connection for use in the housing of FIGS. 12-15.

17 is a longitudinal sectional view in which pressure is applied to the connection of FIG.

18 and 19 show another form of connection for use in the housing of FIGS. 12-15, in accordance with FIGS. 16 and 17. FIG.

20 and 21 show another form of connection for use in the housing of FIGS. 12-15, in accordance with FIGS. 16 and 17. FIG.

The present invention relates to a hydraulic remote control system for adjusting the direction of a control unit, and more particularly, to adjusting the direction of a back mirror for a vehicle.

Various types of devices have been known for remotely controlling a vehicle's external backmiller. One type used three cables in each sheath. Some use electric motors or devices with multiple levers. This type of remote control mirror is not suitable for use if the hand movement distance from the mirror is greater than about 1 m, except for devices using an electric motor, so it is not possible to It is not suitable for the reorientation of mirrors on passenger doors. Remote control mirrors using electric drives have the drawback that they are much more expensive than simply being operated by hand.

In U.S. Patent No. 3,873,190, one end of a reflector constituting a mirror is provided to rotate in a housing by a ball and socket joint, and two hydraulic bellows members at regular intervals from each other are provided. A remotely controlled back miller assembly with its other end supported by a housing is disclosed. Compared to other devices, the angular movement of the mirror is caused by the connecting shaft between the center point and the ball and socket connections between the two bellows members as the amount of liquid in the hydraulic device changes. In addition, the same change in the amount of liquid in both bellows members generates an angular movement at right angles to the connecting axis. This maneuver can be carried out by means of a lever mounted to rotate, which is arranged to actuate two piston and cylinder arrangements, each of which is connected to a bellows member, Position the bellows member with respect to the axis of the lever in such a way that the position of the bellows member with respect to the axis of the mirror is equal. Therefore, it is possible to match the movement of the lever and the movement of the mirror. However, if the amount of liquid changes, for example due to thermal expansion, unexpected movement of the mirror with respect to the perpendicular axis will occur. It is an object of the present invention to construct a hydraulic remote control system that eliminates this irrationality.

According to the present invention, an adjustable mounting assembly comprising a base member, a pivot shaft bearing provided on the base member, a member mounted and operated on the pivot shaft bearing, a manual control mechanism, and three hydraulic circuits Each of the three hydraulic circuits has a fluid pressure transmitting part and a fluid pressure receiving part including a chamber having a fixed wall, the fluid pressure transmitting part is mechanically connected to a manual control mechanism, and the fluid pressure receiving part is connected to each other. A mounting assembly configured to mechanically connect the base member with respect to and at regular intervals from the pivot bearing, wherein the manual control mechanism comprises: a cylindrical recess for receiving a chamber having the fixed wall of the fluid pressure transmission portion; A manual control member and a track connected to the manual control member in the recess. And a thrust transfer means, wherein the thrust transfer means compresses one or two of the three chambers toward the cylindrical wall of the recess according to the displacement direction of the manual control member. .

Further, according to the present invention, the wing thrust transmission means includes a central conical member provided in a direction for engaging with the chamber having the fluid pressure transmission portion and the fixed wall. This conical member can be manufactured integrally with the manual control member. The manual control member is pivotally mounted on the housing and connected to the conical member by a pivot shaft link such that a relatively large movement of the passive member causes a small movement of the conical member.

Further, according to the present invention, the manual control mechanism is composed of a cylindrical housing for receiving a chamber having the fixed wall of the fluid pressure transmission portion, wherein the thrust transmission means each sliding wedge for the fluid pressure transmission portion, and a cylindrical shape. Means for reacting to the manual control member to move each sliding wedge in the axial direction with respect to the housing, so that each driven member for the hydraulic circuit can be moved radially.

In a preferred application of the invention, the portion to be steered is a mirror or mirror carrier of the vehicle back mirror assembly. Such a mirror or mirror carrier may be installed in the mirror case by means of ball and socket connection located centrally with the assembly end of the symmetrically located hydraulic circuit.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the steering system for a backmiller assembly of a vehicle includes three piston and cylinder assemblies 10, 12, 14 located in a master control unit, which will be described in more detail below. Each such piston and cylinder assembly 10, 12, 14 is a slave piston and cylinder arrangement 22, 24, 26 located in the mirror housing by a respective tube 16, 18, 20 as described in more detail below. ) These tubes 16, 18 and 20 are made of a flexible plastic material. Each piston of the piston and cylinder assembly 10, 12, 14 is confined to the plane 28, while the piston of the slave piston and cylinder assembly 22, 24, 26 is confined to the plane 30. For example, by the operation of the control lever, moving this plane 28 can produce a corresponding actuation of the plane 30, which means the mirror carrier.

Referring to FIG. 2, the casting seed device includes a cylindrical housing 32 having a hollow hemispherical cap 34 at one end. The hemispherical cap 34 has a central opening 36 and protrudes through a control lever 36 fixed to the hemispherical member 40 adapted to fit inside the hemispherical cap 34. As shown, the pistons 42, 44 of the piston and cylinder assemblies 10, 12 abut the flat portion 46 of the hemispherical member 40. In addition, the piston 48 of the piston and cylinder assembly 14 is also configured to abut the flat portion 46, although not shown in FIG.

The head portion of each piston 42, 44, 46 abuts the diaphragm 50 which is fixed between the end face of the cylinder housing 32 and the opposing surface of the subordinate housing 54, and the subordinate housing 54. Forms a fluid chamber 56 for the piston and cylinder assembly 12 and a liquid chamber (not shown) for the piston and cylinder assembly 10, 14. In use, therefore, if the control lever 38 is moved from its central position as shown, at least one piston 42, 44, 48 is depressed so that the liquid outwards along the tubes 16, 18, 20. Move to get out.

Referring to FIG. 3, the back mirror apparatus includes a mirror case 60 containing a mirror 62 installed in the mirror carrier 64. The mirror carrier 64 forms a partial spherical flange 66 extending from the mirror 62, and the partial spherical flange 66 is in close contact with the flange 68 formed on the base member 69 in a corresponding shape. The base member 69 is fixed to the rear surface of the mirror case 60. The hemispherical socket 70 concentric with the partial spherical flange 66 has a central opening through which the rod 72 penetrates, and at one end of the rod 72 hemispherical head portion 74 accommodated in the hemispherical socket 70. Is formed. The other end of the rod 72 protrudes through a hole formed in the center of the base member 69 and includes a compression spring 76, and the compression spring 76 includes a washer 78 and a base member 69. It is provided between the back of the to push the spherical flange 66 against the spherical surface of the flange (68). Thus, the mirror 62 is rotatable around the radius of curvature of the spherical flange 66.

Three recesses 84 (only two are shown in FIG. 3) are formed in the base member 69, and each recess is connected to a tube 16 formed at its bottom. 18, 20) respectively. The flexible diaphragm 86 forms the surface of the base member 69 which surrounds the recess 84, and the member 88 which forms the cylinder body of the three subordinate piston and cylinder assemblies 22, 24, and 26. As shown in FIG. It is fixed between and. The head of the piston 90 of this piston and cylinder assembly is in close contact with the diaphragm 86, while the other end of the piston is in contact with the rear face of the mirror carrier 64. This structure is similar to that shown in FIG. 2, and the mirror carrier 64 moves synchronously with the flat portion 46 of the hemispherical member 40 of the casting seed device (see FIG. 2).

4 shows another remote controlled mirror assembly in accordance with the present invention, wherein the three hydraulic circuits each comprise a device that is filled with hydraulic fluid and sealed before the casting seed device and the mirror head are assembled together. The mirror head shown in FIG. 4 is essentially similar to that shown in FIG. 3 and the same parts are denoted by the same reference numerals, and redundant descriptions will be avoided.

The first hydraulic circuit consists of a tube 100 made of flexible plastic, which has a bulb 102 sealed at one end and a bulb 104 similarly sealed at the other end. Since the wall thickness of the bulbs 102, 104 is much thinner than the wall thickness of the tube 100, if one of the bulbs 102, 104 is pressed by the action of an external pressure, the liquid will pull the tube 100 therefrom. Moving along, it inflates the other bulbs such that the amount of liquid in the tube 100 does not increase significantly. The second hydraulic circuit includes a tube 106 having a bulb 108 at one end, and a bulb connected to the other end of the tub 106 is not shown in FIG. The third hydraulic cylinder is also not shown in FIG. However, these three hydraulic circuits are all configured identically to each other.

The bulb 102 accommodated in the housing 110 is provided on the base member 69 inside the mirror case 60. In addition, the housing 110 accommodates the piston 112, the head portion of the piston 112 is in close contact with the bulb 102, the opposite end thereof is in contact with the rear surface of the mirror carrier (64). A bulb (not shown) attached to the end of the tube 106 is housed in a similar housing 114 with a piston 116, while a similar housing and piston (shown in the bulb corresponding to the third hydraulic circuit) is shown. Not formed) is formed. These three housings are positioned so as to be in close contact with the rear surface of the mirror carrier 64 at a position where each piston is symmetrically disposed about the rod 72.

The casting device of the remote controlled mirror assembly shown in FIG. 4 comprises a cylindrical housing 120 whose one end is sealed by a cap 122 with a partial spherical socket, the partial spherical socket of the actuating lever 126. A ball 124 formed at an intermediate point along the length is received. One end of the operation lever 126 protrudes outward from the housing 120, and a manual operation handle 128 is formed at the end thereof. The other end of the actuating lever 126 actuates the conical thrust member 130 in the housing 120. Two bulbs 104, 108 are connected to the dubes 100, 106, respectively, and are housed in the housing 120 with bulbs corresponding to the third hydraulic circuit, and also at regular intervals around the thrust member 130. Is located. Thus, if the actuating lever 126 is displaced from its central position, at least one bulb contained within the housing assembly 120 will be compressed so that its volume is reduced and at least one other bulb associated therewith will be inflated. The movement of the liquid along the tubes of these three hydraulic circuits is the result of the actuation of the actuating lever 126 providing the corresponding actuation of the mirror carrier 64 in a manner similar to that described with reference to FIGS. 2 and 3. It is However, since the hydraulic circuit of FIG. 4 is formed as a sealed device, the risk of leaking hydraulic fluid can be substantially reduced. If a leak occurs, it can be immediately replaced with an appropriate hydraulic circuit.

5 shows a bulb 132 that can be used in place of the bulb 102 in the mirror housing 60. The bulb 132 has a structure formed twice as long as the bulb 102, and the bulb 132 is folded in half as shown to provide twice the liquid volume with the same length as the bulb 102. Similarly, such a valve can be provided for the other two hydraulic circuits. The effect of this arrangement for doubling the amount of liquid is to provide the same actuation of the mirror carrier 64 and to reduce the displacement of the actuating lever 126 in half.

6 and 7 show another variant of the casting seed device, which is designed to form the casting seed device as thin as possible in a direction perpendicular to the surface of the protruding control lever 140. The bulbs 104, 108 are replaced in the form of bellows integrally formed with the respective tubes 100, 106. Corresponding bellows structures are formed for the third hydraulic circuit but are not shown. The housing for the casting machine is formed in two parts, one of which has an outer portion 146 having a partially spherical socket for receiving the spherical structure 148 of the control lever 140. At the rear of the spherical structure 148 is formed a disk 150 which is operated by the control lever 140. Another portion of the housing, the base portion 152, may be cast from a material, such as polypropalene, which may be formed into an integral hinge structure. The base portion 152 is generally triangular in shape, and is provided with three stubs 154 at the central point of each side. Each corner of the base portion 152 is provided with an L-shaped flap 158 fixed to the base portion by an integral hinge structure 160. The elongated protrusion of the L-shaped flap 158 is in close contact with one bellows at the bottom of the outer circumference of the disk 150 actuated by the control lever 140 when the L-shaped flap is folded. 142 and 144 are received between the elongated protrusion of the L-shaped flap 158 and the base portion 152. The disk 150 presses one or two flaps 158 towards the base portion 152 and moves the remaining flaps apart from the base portion, thus changing the volume of the bellows 142 and 144 accordingly. . If it is necessary to replace one sealed hydraulic circuit, the three screws 156 are removed and the corresponding flap 158 is bent to the position shown by the dashed line in FIG. The related bellows 142 and 144 are supplied through the central hole in the base portion 152 where the 100 and 106 protrude.

The speed ratio of the movement of the control lever 140 and the corresponding movement of the mirror carrier 64 can be changed by changing the relative length of the lever constituted by the flap 158 on the one hand and the disk 150 on the other hand. Can be.

8 and 9, there is shown a modification in which the casting seed device is configured such that the diameter is designed to be as small as possible with respect to the axis of the control lever 160 in the central position. The main body 162 of the housing is generally cylindrical and has a cap 164 with a partial spherical socket for the spherical structure 166 provided on the control lever 160 similarly as described above. One end of the main body 162 of the housing is provided with a central partial spherical stud 168 engaged into the socket in the thrust member 170. At its end, the thrust member 170 has a partial spherical socket for receiving the partial spherical stud 172 at the inner end of the adjustment lever 160. Thus, displacement of the control lever 160 causes a corresponding angular movement of the thrust member 170 about the stud 168. The thrust member 170 has a truncated conical flange 170. When the control lever 160 is displaced to the maximum, the outer surface of the flange 170 is formed by the conical angle of the flange 170. In parallel to the inner wall of the Bulbs 176, 178, and 180 formed at the tube ends of the hydraulic circuits are accommodated in the annular space between the inner wall of the housing 162 and the thrust member 176. These tubes, which are identical to the tubes 100 and 106 of the hydraulic circuit, protrude through their respective slots, such as the slots 182 in the base portion 162, and when the bulbs 176, 178 and 180 need to be replaced. With these slots can be recovered.

10 and 11 show another type of casting type device in which the bulb of the hydraulic circuit is designed to be completely flat in order to maximize the amount of liquid in the tube. The manipulator shown in FIG. 10 forms a cylindrical body 190 having a cap 192 with a spherical socket for the hemispherical structure 194 on the adjustment lever 196. At the center of the flat surface, a hemispherical structure 194 includes a socket for receiving a partially spherical stud 198 formed in a stationary stem 200 installed at another end of the housing 190. Three bulbs 202, 204, 206 for each of the hydraulic circuits are installed around the inner wall of the housing 190 and are in close contact with the respective arcuate thrust members 208, 210, 212. In order for the bulbs to be pressed completely flat in between, the outer surface of the thrust member forms the same radius as the inner wall of the housing. Each cam slide 21, 214, 216 for the thrust member is housed in a corresponding slot in the central axis 200. As shown in detail in FIG. 10, each cam slide engages with the planar portion of the hemispherical structure 194 on the control lever 196 and is in close contact with the surface on the corresponding thrust member 218. And another cam surface 222 configured to be in close contact with another edge of the drust member. Thus, if the cam slide 212 is pressed inward by the changed position of the control lever 196 from its central position, the corresponding thrust member is configured to move radially outward to squeeze the corresponding bulb.

In one embodiment of the invention, the three tubes of the hydraulic circuit together with the bulbs or bellows of the embodiments of FIGS. 4 to 11 can all be cast into a single unit.

When the above-described embodiment is designed to be mounted on a vehicle, it is necessary to pass a control device and a tube connected to the mirror carrier through at least one passage in the vehicle body. If desired to keep these passages as small as possible, the tubes must only be configured to separate the controls from the mirror housings, so that the tubes must only pass through these passages, after which they need to be filled with hydraulic circuits using liquids. There is no. 12 to 17 show hydraulic connections suitable for such devices. These connection units are equally applicable to all embodiments, but will be described when applied to the embodiment of FIG.

12 to 15 show a housing of a connection comprising two identical halves 230, 232, which have clasps 238, 240 at their respective ends. A pair of arms 234 and 236 are provided, respectively, and shoulders 242 and 244 that are configured to engage the clasps 238 and 240 to secure the two halves 230 and 232 together. Are formed respectively. The two halves 230 and 232 are formed to reduce the diameter of both ends 248 and 250 and form a cylindrical chamber 246. On the edges of halves 230 and 232 in chamber 246, protruding and groove shaped portions 252 and 254 are provided.

Referring to FIG. 16, the tube 100 has been replaced with a tube 252 connected to the bulb 120 in the control and a tube 254 connected to the bulb 102 in the mirror housing. The other ends of the tubes 252 and 254 are connected to the respective bulbs 256 and 258 and fixed by the respective fixing rings 260 and 262. Bulbs 256 and 258 are made of an elastic material, which bulbs have a cylindrical chamber with tubes 25 extending inwardly through end 248 and tubes 254 extending outward through another end 250. It is housed side by side within (246). When the control lever 128 (see also FIG. 4) is in the center position, the amount of liquid in the bulbs 256 and 258 does not expand enough to fill the cylindrical chamber 246 with their walls touching each other. .

When the control lever 128 changes position to compress the bulb 104 (see also FIG. 4), it moves the liquid into the bulb 256, as shown by the arrow 264, and the bulb 256. Is enlarged to fill the cylindrical chamber 246 to the fullest, so that the liquid in the bulb 258 is discharged outward and moved along the tube 254 into the bulb 102 (FIG. 4) in the mirror housing. will be.

Similar connections are also formed in the other two hydraulic circuits. Therefore, where the tube passes through the passage in the body of the vehicle, since the passage size does not have to be larger than passing through three tubes, the bulbs 256 and 258 can be crimped and inserted at the time of installation. have.

18 and 19 show different types of connections in which bulbs 256 and 258 in FIGS. 16 and 17 are replaced with bulbs 266 and 268, each of which has their walls extended. It is configured to fill the cylindrical chamber 246 sufficiently without this. The other components are denoted by the same reference numerals as in FIGS. 16 and 17, and the operation method is the same except that the walls of the bulbs 256 and 258 are not expanded, and the material of the bulbs 256 and 258 is also different. It is designed so that the stretching force is not affected by the pressure of the liquid in the tube.

20 and 21 illustrate another type of connection in which bulbs 256 and 258 in FIGS. 16 and 17 are replaced with bulbs 270 and 272, which bulbs 270 and 272 are not fixed. It is arranged so that the ends are in contact with the piston 274 in the chamber 246. The size of the bulbs 270 and 272 is sufficient to overlap around the edge of the piston 274 even when the bulb 272 is located at one end of the chamber 246 relative to the tube in its connected state. . The other components are indicated by the same reference numerals as in FIGS. 16 and 17, and the method of operation is also applied to the other bulbs by the piston 274 regardless of the relative amount of liquid in the two bulbs 270 and 272. The same is true except that it is configured to apply a constant force.

All hydraulic circuits can be made of plastic material, and the problem of corrosion in the selection of hydraulic liquids is not particularly limited.

Claims (6)

The base member 69, the pivot bearing 74 provided on the base member 69, the members 30 and 62 mounted and manipulated on the pivot bearing 74, and the manual control mechanism 32; , 120, 146, 162, 190, and three hydraulic circuits (16, 18, 20, 100, 106), the controllable mounting assembly comprising three chambers with fixed walls The fluid pressure transmitters 10, 12, 14, 102, 104, 108, 142, 144, 176, 178, 180, 202, 204, 206 and the fluid pressure receivers 22, 24, 26, 102, respectively. And the fluid pressure transmission unit 10, 12, 104, 142, 176, 178, 202, 204 is mechanically connected to the manual control mechanism 32, 120, 146, 162, 190, and the fluid Pressure receivers 22, 24, 26, 102 may mechanically connect the steered members 30, 62 to the base member 69 with respect to each other and at regular intervals from the pivot bearing 74. To configure In the mounting assembly, the manual control mechanism includes a cylindrical recess for accommodating a chamber having the fixed wall of the fluid pressure transmission units 104, 108, 176, 178, 180, 202, 204, 206, and a manual A control member (126, 160, 196) and trust transmission means (130, 174, 212, 214, 216) connected to the manual control member (126, 160) in the recess. And the trust transfer means (130, 174) compresses one or two of the three chambers towards the cylindrical wall of the recess, depending on the displacement direction of the manual control member (126, 160). 2. The central conical member (130, 174) according to claim 1, wherein said thrust transfer means engages with said chamber having said fixed wall of said fluid pressure transmitters (104, 108, 176, 178, 180). Installation assembly comprising a. 3. The installation assembly according to claim 2, wherein the conical member (130) is manufactured integrally with the manual control member (126). The method of claim 2, wherein the manual control member 160 is installed on the housing 162 so as to cover the rotation and is connected to the conical member 174 by the pivot link 172, the manual control member ( A relatively large movement of the 160 causing a small movement of the conical member 174. The hydraulic pressure control unit (202, 204, 206) of claim 1, wherein the manual control mechanism comprises a cylindrical housing (190) for receiving a chamber having the fixed wall of the fluid pressure transmission unit. To the manual control member 196 to move each sliding wedge 212, 214, 216, and each sliding wedge 212, 214, 216 in an axial direction with respect to the cylindrical housing 190. And means for reacting, said mounting assembly being adapted to radially move each driven member (208, 210, 211) to said hydraulic circuit (16, 18, 20, 100, 16). The assembly according to any one of the preceding claims, wherein the member to be adjusted (30, 62) is a mirror of the vehicle back mirror assembly.

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