TW200300826A - Sliding bearing body and sliding bearing with sliding bearing body - Google Patents

Abstract

The invention relates to a sliding bearing body (1) made of plastic for mounting components moving relative to the bearing body, where the bearing body (1) displays a receptacle (2) with a clear width and at least one sliding bearing surface (3) for the component to be mounted in the bearing. The invention further relates to a sliding bearing with at least one sliding bearing body. To create a sliding bearing body that satisfies the requirements regarding low noise emission, simple assembly, good damping properties in relation to dynamic forces and simple manufacture, it is proposed according to the invention that the bearing body (1) be provided with at least one elastically deformable area (6) that projects, thereby reducing the width of the receptacle (2), and against which the component (22) located in the receptacle (2) can be positioned. Furthermore, the bearing body can display retaining webs, which are integrally moulded by means of areas of thinner material on at least one face end of the bearing body and can rest against a housing on the outside.

Description

200300826 V. Description of the invention (1) Technical field to which the invention belongs The present invention relates to a plastic sliding bearing body for mounting a component moving relative to the bearing body, wherein the bearing body presents a container, has a clear width and at least one sliding bearing surface, Available for assembly in bearings. The invention also relates to a plain bearing having at least one plain bearing body. The prior art has known general plain bearing bodies, for example in the form of bearing bushings, in particular compression bushings. In addition, the bearing body is often surrounded by a casing, which absorbs the force exerted on the bearing body by components installed in the bearing. The components to be installed in the bearing, such as drive shafts, connecting rods, bearing trunnions, etc., are located in the bearing body and have bearing clearances. The choice of bearing clearances here must, for example, take into account expansion, for example due to water absorption, manufacturing accuracy, thermal expansion and Shape error. On the other hand, in the operation of a device provided with a sliding bearing, the bearing gap caused an increase in noise, which caused rolling noise. In addition, sliding bearings need to be highly damped to achieve quieter operation and longer service life of sliding bearings. Furthermore, it is necessary to make the plain bearings as simple and inexpensive as possible. SUMMARY OF THE INVENTION The object of the present invention is to create a plain bearing body or a plain bearing with a bearing body to meet the requirements of low noise emission, simple combination, good damping performance with respect to dynamic forces, and simple manufacturing. The purpose of the present invention is to solve the problem by using a bearing body, presenting at least one elastic deformation region, protruding to reduce the width of the container, and the components located in the container can be positioned close to it. To this end, the elastic area can protrude directly into the container, or

200300826 V. Description of the invention (2) Good, which means that the container extends beyond the bearing area defined by the sliding surface, which will also reduce the clear width of the container opening. The components to be installed in the bearing are given an appropriate size, allowing at least one elastic area to be located immediately next to the component to be installed in the bearing without gaps, thereby avoiding undesired rolling noise. It is preferable to provide at least two elastic deformation regions, in which the components to be installed in the bearing are located in the container, and the regions are centered. For this reason, the elastic zone is designed to hold the component segment to be installed in the bearing, that is, a sliding bearing designated in an individual installation position, without gaps and without further support mechanisms. Be Safe — The components mounted in the bearing can be used in this case to load individual elastic zones using gravity. _ The component segment to be installed in the bearing, which is specified in the specified plain bearing, has a length equal to the length of the plain bearing or a multiple thereof, such as double, five or ten times, or _ longer. The components to be installed in the bearing have the weight equivalent to a solid shape made of light metal such as aluminum, or to a weight equivalent to the solid shape made of steel or heavy metal ~, and the section of the component to be installed in the bearing is equivalent to a container. Within any necessary clearance. In order to apply the corresponding self-adjusting effect or holding force to the component to be installed in the bearing, the elastic zone is designed, for example, regarding its quantity, the angular extension of the container, the material thickness and / or the elastic modulus. The elastic zone is preferably arranged on the bearing body, paired in radial opposition, or distributed regularly along the bearing body's periphery. The two elastic zones (the components to be installed in the bearing are located therebetween) can be connected-one piece, and is designed, for example, as a ring-shaped elastic web around the entire circumference of the container. When the components to be installed in the bearing are inserted into the container, That is, elastic expansion. Preferably there are two to twelve or more elastically deformed regions distributed around the periphery of the container, such as four to eight elastic regions. The angle of individual elastic zones extends from 5 to 180 °

Page 8 200300826 V. Description of the invention (3) 30 to 90 ° is preferable, 45 to 75 ° is more preferable, especially about 60 °. The at least one elastic region may be located adjacent to the sliding region, particularly at a level of the sliding region in the circumferential direction, or opposite to the sliding region. The elastic area is preferably designed so that the component to be installed in the bearing can be positioned close to the sliding surface adjacent to the deformation area. This area can be elastically deformed, so once the elastic retaining force of the deformation area is overcome, the component can use the sliding area. Accept by sliding. The elastic region is preferably composed of a material having a low sliding friction coefficient with respect to the component to be installed in the bearing, such as the same material as the sliding surface. At least one elastic region or all of the regions can be actuated in a linear or strip manner on a component to be installed in a bearing, and when the lateral load of the component is low, the contact surface of the elastic region on the component, that is, as a sliding surface. . At higher lateral loads, the component is in contact with the actual sliding surface and can absorb the force and transmit it to the bearing housing. For this reason, the elastic area protruding beyond the sliding surface can be moved back by using the component to be installed, preferably by shaking back, at least to the level of the sliding surface. The elastic region is preferably designed as an elastic tab, with its free end protruding into or facing the container, so that the component to be installed in the bearing can abut the elastic tab in the free end region of the elastic tab. However, the elastic zone can also be held on either side or in any other way. At least one elastic region (preferably the entire elastic region) is preferably located in the radial direction of the sliding bearing at the same level as the outer peripheral surface of the sliding region and / or the compression sleeve region, or in a cross-sectional area facing radially inward. Therefore, it is preferable that the elastic region does not protrude radially outward from the compression sleeve region and / or the sliding region.

200300826 V. Description of the invention (4) The sleeve area of the sliding bearing should be designed to be non-positive and / or positively fixed in the container of the corresponding housing, at least relative to the direction of movement of the component to be installed in the bearing. The sliding area, especially the sliding surface, is deformed. For this purpose, the compression sleeve region may, for example, show an outwardly protruding region, such as an outwardly curved arch, a crowned region, which may be fixed in the shell container. The bearing body can show at least one area and limit the container to the outside. The elastic deformation area should be located on one or both sides of the bearing body, preferably on one or both sides of the sliding bearing area, that is, immediately adjacent to the sliding surface. At least one elastic region or all of this region may also be located on an appropriate recess or dent of the bearing body toward the container opening, or on an intermediate member provided between the plain bearing region and the elastic region. The bearing body is preferably a sleeve-shaped design with a longitudinal axis, wherein the elastic region can extend substantially along the longitudinal direction of the bearing body. The elastic axis can be clamped between 0.5 ° and 20 ° with the longitudinal axis, and it can also show a larger or smaller angle, depending on the choice of material or application. The angle between the extending direction facing the inside of the elastic area of the container and the longitudinal axis of the bearing body is preferably in the range of 1 ° to 10 °, and more preferably 3 ° to 5 °. The radial extension of the elastic web is preferably between half of the wall thickness of the bearing body and the full wall thickness. The elastic area should preferably transition into the bearing area of the bearing body flush inside or outside. The length of individual elastic zones is between 1 and 10 mm, but it is not limited to this, and preferably between 2 and 5 bandits. 5 m ra。 The elastic region is preferably that the longitudinal sliding surface protrudes toward the container or enters 0.1 to 2 mm, but is not limited thereto, and about 0.3 to 1 m m is more preferable, for example, about 0.5 m ra. The degree of radial protrusion from the sliding surface towards the container can be used to define the component

Page 10 200300826 V. Description of the invention (5) The tolerance range of the bearing according to the present invention means that it can still be installed but has no clearance in each bearing body. The cut angle of the elastic region at the side of the container side is preferred, and the cut angle should extend from the side of the elastic region of the container in the radial direction beyond the sliding surface. The side of the elastic region facing away from the container is preferably concave, at least at the level protruding toward the container or entering the farthest, so the elastic region can be completely located between the sliding surface and the outer peripheral surface of the bearing. The recess in the elastic region extends across its entire length, so the fully elastic region can be located between the outer peripheral surface and the sliding surface of the bearing body. The size of the recess allows the elastic area to protrude into the farthest area of the container, and is aligned with the sliding surface of the bearing body. In the direction of the elastic area, there is still a gap between the surface of the elastic area facing away from the container and the outer peripheral surface of the bearing or its extension. To this end, the elastic zone is tapered towards its free end. In the sleeve-shaped bearing body, it can be made into adjacent elastic regions by axial cutting, and the cut can extend into the sliding surface. In addition, the cut should extend only at a small angle relative to the average peripheral edge of the bearing body, such as 10 ° to 2 ° or less, so that the elastic area extends approximately over the entire periphery of the container. The cutout can be V-shaped, especially the side that points to the central longitudinal axis of the bearing body, preferably the parallel side, whose central plane can point to the central longitudinal axis of the bearing body. According to another specific example, the bearing body may be provided with an integrally formed retaining web at its surface end, which can be bent across the longitudinal axis of the bearing body and swiveled away from the container beyond the outer peripheral surface of the bearing body. The retaining web is preferably connected to the bearing body by a hinge, which can be specially designed as a plastic and / or elastic deformation area, such as an integral hinge. The hinge is preferably made of a thermoplastic material. This allows the web to project outward, and as a result, one or both ends of the bearing body can be fixed in a manner that prevents movement.

200300826 V. Description of the invention (6) In the relevant bearing housing, it is best that the web is in full contact with the housing. For this purpose, the web can be bent by 15 ° with respect to the longitudinal axis of the bearing body, preferably about 30 to 100 ° or more, and more preferably 60 to 90 °. The angular extension of the holding web can be in the above specific range of the elastic region, but it is not limited thereto. The webs are preferably separated from each other by incisions, and the incisions should extend to the incisions in adjacent elastic regions and are preferably aligned. The swivel web is preferably located in the bearing body cross-sectional area between the outer peripheral surface and the sliding surface, and is preferably aligned with one or both of these surfaces. -The bearing body can be a sleeve-shaped design, preferably a sleeve that is completely closed at the periphery. Or a bushing method is preferred. Components to be installed in the bearing can be inserted into its face end. The bearing body can also be designed with fine slits to extend the full length in the longitudinal direction, such as sliding bearings according to W0 97/4 0 2 81. The bearing body can also be composed of two or more split bearing shells, with a mechanism to tie the bearing shells to each other. If the bearing body is designed as a compression sleeve, the compression sleeve region can, for example, surround the bearing region radially or be separated radially. According to the present invention, the sliding surface of the plain bearing body should preferably extend over the entire circumference of the bearing body, or the periphery of the bearing area of the component to be installed in the bearing, and preferably also extend over the entire length of the bearing area of the plain bearing body. When appropriate, several sliding bearing surfaces separated from each other can also be provided, which are preferably distributed regularly in the bearing body container, for example, as a web-shaped sliding bearing area shown in WO 9 7/4 0 2 8 1. > The sliding surface of the bearing body can be cylindrical, polygonal, tapered, etc. _ Appropriate shape, suitable for components to be installed in the bearing. For example, a plain bearing can be combined with a drive shaft and a triangular link to form a hexagonal or other cross-section, or with other components to be installed in the bearing. Plain bearings can be designed as diameters

Page 12 200300826 V. Description of the invention (7) Direction bearing or thrust bearing. The component to be mounted on the bearing can be guided in the plain bearing for axial movement and / or rotation and / or twisting, i.e. rotation in the opposite direction about the longitudinal axis. The bearing body of the present invention is preferably composed of a thermoplastic material. The bearing body is preferably made as a one-piece component, such as by injection molding, and the elastic area is preferably made of the same material as the bearing area that provides the sliding surface. The present invention also relates to a sliding bearing having a bearing housing and the bearing body of the present invention. In addition, the present invention relates to sliding bearings, internally installed components, especially transmission shafts, connecting rods, or trunnions mounted therein, wherein the elastic protrusion is located immediately adjacent to the installed component, without clearance, preferably under preload Of it. Embodiments of the present invention are described in detail below with reference to the drawings. Embodiment 1 FIG. 1 shows a sliding bearing body 1 of the present invention, which is a sleeve-shaped, cylindrical compression sleeve type bushing, made of a single-piece component made of a thermoplastic material, and a container 2 for a component such as a drive shaft to be mounted on a bearing Inside. The plain bearing body 1 shows that the inner peripheral surface has the shape of a sliding surface 3 facing the container 2 and has an outer peripheral surface 4. Both sides 3, 4 are cylindrical surfaces, but can also have different appropriate geometries to suit the components to be installed in the bearing. Six elastic deformation regions in the shape of elastic webs 6 protrude from each side end 5 of the container 2 and are distributed around its periphery, wherein the elastic webs are arranged at each side end in such a manner that the corresponding transmission shaft 2 2 ( (Figure 3) can be located in between. In this specification, the elastic web 6 has an area protruding toward the container 2 and is designed, for example, in the shape of a nose 7 to extend beyond the peripheral extension of the elastic web. As implemented

Page 13 200300826 V. Description of the invention (8) For example, the elastic web extends 60 along the circumference. It is about 2.5mm long, while facing the inside of the container, it is about 2 to 5 with respect to the longitudinal axis of the bearing body. . In addition, adjacent to the container 2, the free end of the elastic web 6 shows a chamfered angle 9 extending radially beyond the sliding surface 3 so that the component to be mounted on the bearing is inserted into the container 2. '° On the opposite side of the container 2, the elastic web 6 is provided with a recess. The design is such that when the nose 7 is aligned with the sliding surface 3, the elastic web can be completely located between the moving surface 3 and the outer peripheral surface 4 of the sliding bearing. Area while the drive shaft 22 (Figure 3) is in contact with the sliding surface. Furthermore, the size of the recessed portion 10 is too large to some extent, so that the elastic web 6 can be located in the above-mentioned cross-sectional area of the bearing body with a clearance. & The end 11 is aligned with the sliding surface 3 and the peripheral surface 4, and the shoulder of the elastic web 6 passes over the sliding bearing area 12 provided on the sliding surface 3 facing the container 2. ° The elastic webs 6 are separated from each other by incisions 13 and extend only a few degrees along the circumference, meaning that the elastic webs substantially surround the entire circumference of the container 2. & Fig. 2 shows a modification of the bearing body according to the present invention as shown in Fig. 1. The same features are designated by the same reference numbers. Opposite to the bearing body in Fig. 1 (corresponding to all other aspects), the elastic web 6 is only provided at one end 5 of the container 2, which means that the sliding bearing area 2 has a free end 15. Compared with the radial length of the elastic web 6, the radial length of the sliding bearing area in this example is much larger than that in Figure 1. In terms of manufacturing engineering and specific concepts, the bearing body 2 can move the body 1 along the periphery. The directions are separated. , Rong Duan, Figure 3 of the moving shaft, showing the sliding of bearing body 1 shown in Figure 1: Γ soil: Γ. The two ends of the cover 21 protrude beyond the elastic web 6 ^ In, and the S-shaped saddle (and the disassembled state), the elastic web 6 is located tightly ^

Page 14 200300826 V. Description of the invention (9) 22, there is no gap, it is better to have a certain degree of preload. The end of the cover can also be flush with the end of the spring web, so it goes without saying. There is still a small clearance between the transmission shaft 2 2 and the sliding surface 3, and the sliding surface 3 level can be in the range of 0.05 to 3/1 Omm, but it is not limited to this value. The elastic web 6 is designed in such a way that when the component to be mounted on the bearing has a lateral force (that is, it is expected when the corresponding device is used for the intended purpose), the elastic web 6 will deform and the component and the sliding bearing surface 3 Contact, like the conventional sliding bearing, can provide the best self-lubrication of the transmission shaft from the sliding area, and the force acting on the bearing body will be transmitted to the bearing housing. This can correct the manufacturing tolerances of the bearing and / or the drive shaft 'to ensure that the drive shaft can be installed without clearance at any time. In the bearing body, it can be divided radially into the safety web cover. It is the same as the design of at least 3 sections of the thin material web. It can be different from two or more sliding bearings with the bearing body shown in Figure 2. The shafts are arranged side by side in the radial direction of the casing, and the decent ends of the bearings can be engaged or opened. Adjacent bearing bodies should preferably be arranged such that their surface ends 15 face each other, and the sliding bearing openings 2 5 of the components used to be mounted on the nearest bearing body should be facing outward. There can also be several bearing bodies shown in Figure 1, so that the sliding bearing can present various bearing bodies of different designs. Fig. 4 shows another specific example of the bearing body of Fig. 1. The same features are indicated by numbers. The bearing ^ 1 corresponding to each aspect is a (preferably several) free surface end 30 of the elastic web 6 and uses an area of 32, such as a hinge shape, provided with an integrally formed buckle. The bearing body 1 is also a single piece made of a thermoplastic material. The f-type is an integrated hinge. The buckling web 31 shows the same angular position as the elastic web 6 is integrally formed on it, although the angular position is extended. Slits 13 separating adjacent elastic webs 6

200300826 V. Description of the Invention (ίο) The incision between the adjacent clamping webs 3 1 3 3. According to the embodiment, the holding web 3 is completely located in the cross-sectional area between the outer peripheral surface 4 and the moving surface 3 of the bearing body α, so that the bearing body can be easily inserted into the casing. According to the embodiment, the radially inner and outer surfaces 33, 34 of the retaining web 31 are aligned with the surfaces 3, 4 of the bearing body. The holding web 3 1 is provided with a chamfered corner 35 at the outer edge of the surface end facing away from the container 2. ★ ° As shown in Figure 5, the bearing body of Figure 4 can be located in the cover 40, and the elastic web is at 1, m + LΛ and inside. The web 3 1 is completely in contact with the end 4 1 of the cover. Can be located on the hard body in one direction and will not move. Corresponding to the end of the elastic web 6 that holds the web and ends 1 ^ of the bearing body, or the bearing body of Fig. 2

f the web can also be positioned at the face end, and

There is an elastic area between the holding webs at a distance along the circumference of each other

200300826

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200300826 Brief Description of Drawings Figure 1 shows the plain bearing body of the present invention; Figure 2 shows the modification of the bearing body of the present invention as shown in Figure 1; Figure 3 shows the plain bearing with the bearing body shown in Figure 1; The figure shows another specific example of the bearing body of Fig. 1. Fig. 5 shows that the bearing body of Fig. 4 can be located in the casing.

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Claims (1)

200300826 6. Scope of patent application 1. A sliding bearing body made of plastic for mounting components that move relative to the bearing body. The bearing body is in the shape of a container and has at least one sliding bearing surface for the component to be installed in the bearing. The container has a clear width, which is characterized by having at least one elastically deformable area (6) protruding to reduce the width of the container (2), and the components located in the container (2) can be positioned close to this. 2. If the sliding bearing body of the patent application item 1 is provided with at least two elastic regions (6), it should preferably be arranged in radial opposite pairs, and the component (22) to be installed in the bearing may be located in the container ( 2), and use the area to determine the winner. 3. For a sliding bearing body in the scope of claims 1 or 2, at least one of the elastic regions (6) is designed in such a way that the component (2 2) to be installed in the bearing can use the elastic deformation of the elastic region (6), Positioned close to its adjacent sliding surface (3). 4. For a sliding bearing body according to item 1 of the patent application scope, at least one of the elastic regions (6) is designed as a spring tab, and its free end (1 1) protrudes beyond the sliding surface (3) toward the container (2). The component (2 2) installed in the bearing is placed next to the spring tab in the free end (11) area of the spring tab. 5. The plain bearing body according to item 1 of the patent application, wherein at least one elastic region (6) projects radially and / or axially from at least one free end (5) of the container. 6. For example, the sliding bearing body of the scope of patent application, wherein the bearing body (1) is a sleeve-like design, and at least one elastic region (6) is substantially in the direction of the longitudinal axis (8) of the bearing body (1) Extender. 7. If the sliding bearing body of the first patent application scope, at least one Page 19 200300826 VI. Patent application scope The area (6) has a chamfered angle (9) at the end of the surface facing the container (2) side. 8 · As for the plain bearing body in the first patent application scope, / by. (11) / Do the present peripheral surface (4), and the elastic regions (6) each present a recess, (10) the bearing body 2 is the farthest area (7) in the two-entry container (2), and is the most treacherous ( 1〇), between the surface (4) and the sliding surface (3), stands on the surface or ^^ stands on the outer surface 9. If the sliding of the patent application scope item 丨, whoever. (1) at least one surface end It is provided with an axial ^ 庵 and a middle bearing body (6). U d) A plurality of elastic regions separated by 10 · Rushen Patent Qianwei Fan 1, (1) at least one end area has a sliding bearing body, Among them, the bearing body faces outwards across its longitudinal axis (8). The formed retaining web (31) can be placed against the relevant casing. Beyond the outer peripheral surface (4) and placed tightly 1 1 · For example, the patent application Fan Yuan No. web (3 1) is a sliding bearing body using a thinner material item, in which at least one side end and / or elastic product () is held. 32) Integrally formed on the bearing body (1) 1 2 · As at least one side of the area (6) of the patent application scope. The web (31) is located on the sliding surface (the sliding bearing body of the item, which is within the cross-sectional area of the holding.) And the outer peripheral surface (4) of the bearing body (1) 13. As the first patent application scope (1) Designed as one-piece components. 〈Motive bearing body, among which bearing body 14 ・ As designed in the scope of patent application No. 1 (1), it is designed as a compression sleeve bushing. μ dynamic bearing body, in which the bearing body 1 5 ·-a kind of sliding bearing, and the ancient Page 20 200300826 VI. Those who apply for patent bearing scope. 1 6. If the sliding bearing of item 15 of the scope of patent application, the component is installed in the bearing. 1 7. The sliding bearing according to item 15 of the patent application scope, wherein at least one elastic area (6) is located close to the component (2 2) installed in the bearing, preferably under pre-stress. Page 21 I