JPH0651556U - Bearing joint - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the structure of the rotating shaft to which the bearing is fixed,
Also, securely fix the bearing to the rotating shaft. [Structure] A joint main body 30 is externally fitted to the rotary shaft 10, and a bearing 1 is externally fitted to a connecting portion 32 of the joint main body 30. By loosening the oil nipple 36 and supplying high-pressure hydraulic oil to the hydraulic chamber 33 through the hydraulic hose 7, the partition wall 37 swells and the rotary shaft
The outer peripheral surface of 10 is pressure-bonded, and the partition wall 38 swells to pressure-bond the inner peripheral surface of the bearing 1. Further, by sufficiently tightening the oil supply nipple 36, the high pressure hydraulic oil is sealed in the hydraulic chamber 33.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bearing joint for fixing a bearing to a rotary shaft or a mounting hole of a housing, and more particularly to a bearing joint for fixing a bearing by using the pressure of liquid such as hydraulic oil.

[0002]

[Prior art]

 6 to 9 are configuration diagrams showing an example of a conventional rotary shaft and a joint member to which bearings are fixed, respectively.

In each drawing, reference numeral 1 is a radial type bearing, 10 is a rotary shaft which is connected to a reduction gear, a gear and the like (not shown), and which is attached to a housing described later through a bearing 1.

The bearing 1 is supported so that the inner ring 1c and the outer ring 1d face each other via a ball 1a or a roller 1b, and the inner ring 1c and the outer ring 1d are configured to be rotatable in the circumferential direction with low friction. Has been done.

In FIG. 6, a mounting portion 11 having a reduced shaft diameter is formed near at least one end of the rotary shaft 10, and the mounting portion 11 has a flange surface 11a and a fitting groove 11b orthogonal to the axial direction. Are formed in the circumferential direction.

The bearing 1 is fitted and inserted into the mounting portion 11 at a position where one end surface of the inner ring 1c abuts on the flange surface 11a, and the snap ring 2 fitted on the fitting groove 11b is fitted to the other end surface of the inner ring 1c. The movement in the axial direction is restrained by abutting or approaching. Here, the snap ring 2 is a plate-shaped ring having elasticity and formed with cuts.

In FIG. 7, a screw 11 c and a key groove 11 d are formed near the tip of the mounting portion 11, the bearing 1 is fitted into the mounting portion 11, and the inner ring 1 c of the bearing 1 is fitted. The bearing washer 3 is fitted and inserted so as to be in contact with each other. The bearing washer 3 has a claw portion 3a protruding from the inner peripheral surface and a claw portion 3b protruding from the outer peripheral surface. The claw portion 3a fits in the key groove 11d to fix the bearing washer 3 in the rotational direction. Further, the bearing nut 5 is screwed onto the screw 11c to restrain the bearing 1 and the bearing washer 3 in the axial direction. Further, the claw portion 3b of the bearing washer 3 is bent so as to engage with the engagement groove 5a formed on the outer peripheral surface of the bearing nut 5, and prevents the bearing nut 5 from loosening.

In FIG. 8, the inner ring 1 c of the bearing 1 has a taper formed in the hollow portion in the axial direction, and a taper is formed between the bearing 1 fitted in the mounting portion 11 and the mounting portion 11. The formed cylindrical sleeve 6 is inserted. Further, the bearing washer 3 is inserted into the mounting portion 11, and the bearing nut 5 is screwed to the screw 11c to press the sleeve 6 in the inserting direction and further fix the sleeve 6 in the axial direction. At this time, a frictional force corresponding to the pressing force is generated between the sleeve 6 and the inner ring 1c to fix the bearing 1.

FIG. 9 is a configuration diagram showing an example of a conventional housing to which a bearing is fixed and a joint member. Members corresponding to the members described with reference to FIGS. 6 to 8 are designated by the same reference numerals. And the description is omitted.

In FIG. 9, a housing 20 is formed with a mounting hole 21 into which the bearing 1 is fitted, and a flange surface 21a and a fitting groove 21b orthogonal to the axial direction are formed in the mounting hole 21 in the circumferential direction. Is made.

The bearing 1 is fitted in the mounting hole 21 and is axially constrained by the snap ring 2 fitted in the flange surface 21a and the fitting groove 21b. A rotary shaft 10 is inserted in the bearing 1 and rotatably supports the rotary shaft 10 in a housing 20.

[0012]

However, when the bearing 1 is fixed to the rotary shaft 10, the axial strength of the snap ring 2 is low in the configuration shown in FIG. 6, and the axial force is applied to the rotary shaft 10. When it does, the snap ring 2 may be damaged or fall off from the fitting groove 11b. If the snap ring 2 is damaged or falls off, the bearing 1 easily falls off the rotating shaft 10. Further, in the rotating shaft 10 shown in FIG. 7, since the screw 11c and the key groove 11d have to be formed in the mounting portion 11, the processing of the mounting portion 11 is complicated and the cost is increased. Further, in the configuration shown in FIG. 8, the bearing 1 can be securely fixed, but when the sleeve 6 is inserted more than necessary, the bearing 1 is deformed and does not operate smoothly. Or it may be damaged.

When the bearing 1 is fixed to the housing 20, the snap ring 2 has a low strength in the configuration shown in FIG.

An object of the present invention is to provide a bearing joint in which the structure of a rotary shaft or a mounting hole to which a bearing is fixed can be simplified and the bearing can be reliably fixed to the rotary shaft or a mounting hole of a housing. To do.

[0015]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a first means of the present invention is for a sleeve-shaped bearing which is inserted between a ring-shaped bearing and a rotary shaft to fix the bearing to the rotary shaft. A ring-shaped joint body that is a joint that is fitted onto a rotating shaft and is fitted around a bearing, and an annular liquid formed along a surface of the joint body facing at least one of the rotating shaft and the bearing. A pressure chamber, a liquid supply means for supplying a high-pressure liquid to the hydraulic chamber, and a hydraulic chamber and a surface facing the rotating shaft when the high-pressure liquid is supplied to the hydraulic chamber, A first partition wall that bulges and press-bonds to the outer peripheral surface of the rotating shaft; and a second partition wall that is formed between the hydraulic chamber and the surface facing the bearing and that bulges and press-bonds to the inner peripheral surface of the bearing. Characterize.

A second means is a bearing joint for axially fixing a bearing fitted onto a rotary shaft, wherein a ring-shaped joint main body fitted on the rotary shaft together with the bearing, and the joint main body. An annular hydraulic chamber formed inside the body along the surface facing the outer peripheral surface of the rotating shaft, a liquid supply means for supplying high-pressure liquid to the hydraulic chamber, and a high-pressure liquid chamber for the hydraulic chamber. A partition wall is formed between the hydraulic chamber and a surface facing the rotating shaft at the time of supply, and bulges to be pressed against the outer peripheral surface of the rotating shaft.

A third means is, in a bearing joint for axially fixing an inner ring of a bearing externally fitted to a rotary shaft, a ring-shaped joint main body externally fitted to the rotary shaft together with the bearing, and this joint. An annular hydraulic chamber formed along the outer peripheral surface of the rotary shaft and a surface facing the one end surface of the inner ring in the main body; liquid supply means for supplying high-pressure liquid to the hydraulic chamber; When the high pressure liquid is supplied to the hydraulic chamber, the first partition wall that is formed between the hydraulic chamber and the surface facing the rotating shaft and swells and presses against the outer peripheral surface of the rotating shaft and the facing surface facing the hydraulic chamber and the inner ring. It is characterized in that it is provided with a second partition wall which is formed between and has a stepped flange portion which is bulged and formed on the rotary shaft and which holds the inner ring under pressure at both end surfaces thereof.

A fourth means is a bearing joint for axially fixing a bearing fitted in a mounting hole of a housing, and a ring-shaped joint body fitted in the mounting hole together with the bearing, and this joint. An annular hydraulic chamber formed along the surface facing the inner peripheral surface of the mounting hole in the main body, a liquid supply means for supplying a high-pressure liquid to the hydraulic chamber, and a high-pressure liquid for the hydraulic chamber. And a partition wall formed between the hydraulic chamber and a surface facing the mounting hole at the time of supply of the liquid, which bulges and is pressed against the inner peripheral surface of the mounting hole.

Further, a fifth means is a bearing joint for axially fixing an outer ring of a bearing fitted in a mounting hole of a housing, and a ring-shaped joint body fitted in the mounting hole together with the bearing. , An annular hydraulic chamber formed along the inner peripheral surface of the mounting hole and a surface facing the one end surface of the outer ring in the joint body, and a liquid for supplying high-pressure liquid to the hydraulic chamber. A first partition formed between the supply means and a surface of the hydraulic chamber facing the mounting hole when the high-pressure liquid is supplied to the hydraulic chamber, and bulging and crimping to the inner peripheral surface of the mounting hole; It is characterized in that it is provided with a stepped flange portion formed between the hydraulic chamber and a surface facing the outer ring, which bulges and is formed in the mounting hole, and a second partition wall for holding the outer ring under pressure at both end surfaces. And

[0020]

[Action]

 According to the first means, the joint main body fitted onto the rotary shaft and fitted by the bearing, the hydraulic chamber inside the joint main body, and the liquid supply means for the hydraulic chamber allow the hydraulic pressure to be increased. When the high pressure liquid is supplied to the chamber, the first partition wall swells and crimps on the outer peripheral surface of the rotating shaft, and the second partition wall swells and presses on the inner peripheral surface of the bearing. The joint body is fixed to the rotating shaft and the bearing is fixed to the joint body.

According to the second means, the joint main body fitted on the rotary shaft together with the bearing, the hydraulic chamber inside the joint main body, and the liquid supply means for the hydraulic chamber allow high pressure to be applied to the hydraulic chamber. When the liquid is supplied, the partition wall swells and presses against the outer peripheral surface of the rotating shaft, so that the joint body is fixed to the rotating shaft by the frictional force corresponding to the hydraulic pressure, so that the movement of the bearing in the axial direction is limited.

According to the third means, the joint main body fitted to the rotary shaft together with the bearing, the hydraulic chamber inside the joint main body, and the liquid supply means for the hydraulic chamber allow high pressure to be applied to the hydraulic chamber. When the liquid is supplied, the first partition wall swells and is crimped to the outer peripheral surface of the rotating shaft, and the second partition wall swells to pressurize and clamp the inner ring together with the flange portion of the rotating shaft at both end surfaces. The joint body is fixed to the rotating shaft by the frictional force corresponding to, and the inner ring is fixed to the joint body by the pressing force corresponding to the hydraulic pressure.

According to the fourth means, the joint main body fitted in the mounting hole together with the bearing, the hydraulic chamber in the main body of the joint, and the liquid supply means for the hydraulic chamber provide high pressure to the hydraulic chamber. When the liquid is supplied, the partition wall swells and presses against the inner peripheral surface of the mounting hole, so that the joint body is fixed to the mounting hole by the frictional force corresponding to the hydraulic pressure, so the movement of the bearing in the axial direction is limited. .

According to the fifth means, the joint main body fitted into the mounting hole together with the bearing, the hydraulic chamber inside the joint main body, and the liquid supply means for the hydraulic chamber allow high pressure to be applied to the hydraulic chamber. When the liquid is supplied, the first partition wall bulges and is crimped to the inner peripheral surface of the mounting hole, and the second partition wall swells to press and hold the outer ring together with the flange portion of the mounting hole on both end surfaces. The joint body is fixed in the mounting hole by the frictional force corresponding to the pressure, and the outer ring is fixed to the joint body by the pressing force corresponding to the hydraulic pressure.

[0025]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In addition, in FIGS. 1 to 5, members corresponding to the members described with reference to FIGS. 6 to 9 are denoted by the same reference numerals, and description thereof will be omitted.

FIG. 1 is a side sectional view showing a first embodiment of the bearing joint of the present invention.

A bearing joint 30 is externally fitted to the rotary shaft 10. In the bearing joint 30, 31 is a joint body formed in a ring shape whose inner diameter is slightly larger than the outer diameter of the rotary shaft 10, 32 Is a connecting portion formed in a tubular shape by thinning the joint body 31, 33 is an oil pressure chamber formed in an annular shape in the joint body 31, 34 is a lubrication port opening on the outer peripheral surface of the joint body 31, and 35 is A communication passage for connecting the hydraulic chamber 33 and the oil supply port 34, and 36 is an oil supply nipple screwed into the oil supply port 34.

The oiling nipple 36 has a hemispherical tip end portion, and is provided with an oiling passage 36b communicating with a gap between the oiling port 34 and a screw hole 36a at the rear end portion. By sufficiently tightening the lubrication nipple 36, the tip end is pressed against the opening of the communication passage 35 to seal the communication passage 35, and by loosening it, the communication passage 35 and the lubrication passage 36b are passed through the lubrication port 34. Communicate. The bearing 1 is externally fitted to the connecting portion 32 of the joint body 31, and the inner diameter of the inner ring 1c of the bearing 1 is slightly larger than the outer diameter of the connecting portion 32. Further, in the joint body 31, a partition wall 37 is formed between the inner peripheral surface and the hydraulic chamber 33, and a partition wall 38 is formed between the outer peripheral surface of the connecting portion 32 and the hydraulic chamber 33.

By connecting the hydraulic hose 7 to the screw hole 36 a of the oil supply nipple 36 and supplying high-pressure hydraulic oil to the hydraulic chamber 33 by an oil supply pump (not shown), the partition walls 37 and 38 swell and the rotary shaft is rotated. The outer peripheral surface of 10 and the inner peripheral surface of the inner ring 1c are crimped. At this time, by sufficiently tightening the oil-filling nipple 36, high-pressure hydraulic oil is sealed in the hydraulic chamber 33, and the partitions 37, 38 are kept in a bulged state even if the hydraulic hose 7 is removed. As a result, the bearing joint 30 is fixed to the rotating shaft 10 by the frictional force corresponding to the hydraulic pressure, and further the inner ring 1c is fixed in the rotating direction and the axial direction.

According to the bearing joint 30 of the first embodiment, it is not necessary to form a mounting portion having a screw or the like on the rotary shaft 10 for mounting the bearing 1, so that the processing cost of the rotary shaft 10 is reduced. Further, since the fastening force for the rotating shaft 10 and the bearing 1 can be adjusted by further adjusting the hydraulic pressure, the bearing 1 can be reliably fixed to the rotating shaft 10 with a required fixing force.

FIG. 2 is a side sectional view showing a second embodiment of the bearing joint of the present invention. The members corresponding to the members described with reference to FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. To do.

The bearing 1 is externally fitted to the mounting portion 11, and the bearing joint 40 is externally fitted to the mounting portion 11. In the bearing 1, the insertion side end surface of the inner ring 1c is brought into contact with the flange surface 11a, and the other end surface is brought into contact with the bearing joint 40. In the bearing joint 40, 41 is a ring-shaped joint body having an inner diameter slightly larger than the outer diameter of the mounting portion 11, and 42 is a hydraulic chamber formed in the joint body 41 in an annular shape along the inner peripheral surface. is there.

A partition wall 43 is formed in the joint body 41 between the inner peripheral surface and the hydraulic chamber 42. High-pressure hydraulic oil is supplied to the hydraulic chamber 42 through the lubrication nipple 36 as in the first embodiment, and the hydraulic oil is further filled by the lubrication nipple 36. At this time, the partition wall 43 swells and is pressed against the outer peripheral surface of the mounting portion 11. As a result, the bearing joint 40 is fixed to the rotating shaft 10 by the frictional force corresponding to the hydraulic pressure, so that the axial movement of the bearing 1 at the mounting portion 11 is restricted by the flange surface 11 a and the bearing joint 40. To be done.

According to the bearing joint 40 of the second embodiment, since the bearing 1 can be mounted by forming the flange surface 11a on the mounting portion 11, the processing cost of the rotary shaft 10 can be reduced, and Since the fastening force to the mounting portion 11 can be adjusted by adjusting the hydraulic pressure, the bearing 1 can be reliably fixed to the rotating shaft 10 with a required fixing force.

FIG. 3 is a side cross-sectional view showing a third embodiment of the bearing joint of the present invention. Members corresponding to the members described with reference to FIGS. 1 and 2 are designated by the same reference numerals. Is omitted.

The bearing 1 is externally fitted to the mounting portion 11, and further, the bearing joint 50 is externally fitted to the mounting portion 11. In the bearing joint 50, a hydraulic chamber 52 is formed in a ring shape in the joint body 41 along the inner peripheral surface and the surface facing the inner ring 1c.

In the joint body 41, a partition wall 43 is formed between the inner peripheral surface and the hydraulic chamber 52, and a partition wall 44 is formed between the opposing surface of the inner ring 1c and the hydraulic chamber 52. High-pressure hydraulic oil is supplied to the hydraulic chamber 52 through the lubrication nipple 36 as in the first embodiment, and the hydraulic oil is sealed by the lubrication nipple 36. At this time, the partition wall 43 swells and is crimped to the outer peripheral surface of the mounting portion 11, and the partition wall 44 swells to press and hold the flange surface 11a and the inner ring 1c at both end surfaces. As a result, the bearing joint 50 is fixed to the rotary shaft 10 by the frictional force corresponding to the hydraulic pressure, and further the inner ring 1c is fixed in the rotational direction and the axial direction by the pressing force corresponding to the hydraulic pressure.

According to the bearing joint 50 of the third embodiment, since the bearing 1 can be mounted by forming the flange surface 11a on the mounting portion 11, the processing cost of the rotary shaft 10 can be reduced, and By adjusting the hydraulic pressure, the fastening force to the mounting portion 11 and the pressing force for fixing the inner ring 1c can be adjusted, so that the bearing 1 can be reliably fixed to the rotating shaft 10 with a required fixing force.

FIG. 4 is a side sectional view showing a fourth embodiment of the bearing joint of the present invention. The members corresponding to the members described with reference to FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. To do.

In the mounting hole 21 of the housing 20, the bearing 1 is fitted and the bearing joint 60 is fitted. In the bearing 1, the insertion side end surface of the outer ring 1d is brought into contact with the flange surface 21a, and the other end surface is brought into contact with the bearing joint 60. In the bearing joint 60, 61 is a ring-shaped joint body having an outer diameter slightly smaller than the inner diameter of the mounting hole 21, and 62 is a hydraulic chamber formed in the joint body 61 along the outer peripheral surface in an annular shape. .

A partition wall 63 is formed in the joint body 61 between the outer peripheral surface and the hydraulic chamber 62. High-pressure hydraulic oil is supplied to the hydraulic chamber 62 through the lubrication nipple 36 as in the first embodiment, and the hydraulic oil is further filled by the lubrication nipple 36. At this time, the partition wall 63 swells and is pressed against the inner peripheral surface of the mounting hole 21. As a result, the bearing joint 60 is fixed to the mounting hole 21 by the frictional force corresponding to the hydraulic pressure, so that the axial movement of the bearing 1 in the mounting hole 21 is restricted by the flange surface 21a and the bearing joint 60. .

According to the bearing joint 60 of the fourth embodiment, since the bearing 1 can be mounted by forming the flange surface 21a in the mounting hole 21, the processing cost of the housing 20 can be reduced, and the hydraulic pressure can be further reduced. By adjusting the fastening force with respect to the mounting hole 21, the bearing 1 can be reliably fixed to the housing 20 with a required fixing force.

FIG. 5 is a side sectional view showing a fifth embodiment of the bearing joint of the present invention. The members corresponding to the members described with reference to FIGS. 1 and 4 are designated by the same reference numerals. Is omitted.

In the mounting hole 21 of the housing 20, the bearing 1 is fitted and the bearing joint 70 is further fitted. In the bearing joint 70, 72 is a hydraulic chamber formed in the joint body 61 along the outer peripheral surface and the surface facing the outer ring 1d in an annular shape.

In the joint body 61, a partition wall 63 is formed between the outer peripheral surface and the hydraulic chamber 72, and a partition wall 64 is formed between the opposing surface of the outer ring 1d and the hydraulic chamber 72. High-pressure hydraulic oil is supplied to the hydraulic chamber 72 through the lubrication nipple 36 as in the first embodiment, and the hydraulic oil is sealed by the lubrication nipple 36. At this time, the partition wall 63 swells and is crimped to the inner peripheral surface of the mounting hole 21, and the partition wall 64 swells to press and hold the flange surface 21a and the outer ring 1d at both end surfaces. As a result, the bearing joint 70 is fixed in the mounting hole 21 by the frictional force corresponding to the hydraulic pressure, and further the outer ring 1d is fixed in the rotational direction and the axial direction by the pressing force corresponding to the hydraulic pressure.

According to the bearing joint 70 of the fifth embodiment, since the bearing 1 can be mounted by forming the flange surface 21a in the mounting hole 21, the processing cost of the housing 20 can be reduced, and the hydraulic pressure can be further reduced. By adjusting, the fastening force to the mounting hole 21 and the pressing force for fixing the outer ring 1d can be adjusted, so that the bearing 1 can be reliably fixed to the housing 20 with a required fixing force.

In the first to fifth embodiments of the present invention, the hydraulic fluid is supplied to the hydraulic chambers 33, 42, 52, 62 and 72, but any other liquid may be used. Is also possible.

[0048]

[Effect of device]

 As described above, according to the first means of the present invention, when the high pressure liquid is supplied to the hydraulic chamber, the first partition wall swells and is pressed against the outer peripheral surface of the rotating shaft, and the second partition wall swells. Then, the joint body is fixed to the rotating shaft by the frictional force corresponding to the hydraulic pressure and the bearing is fixed to the joint body. Since it can be securely fixed with a required fixing force and there is no need to form, for example, a screw or a key groove in the mounting portion of the rotary shaft, the processing cost of the rotary shaft can be reduced.

According to the second means, when the high-pressure liquid is supplied to the hydraulic chamber, the partition wall swells and presses against the outer peripheral surface of the rotating shaft, so that the joint body is attached to the rotating shaft by the frictional force corresponding to the liquid pressure. Since it is fixed, the movement of the bearing in the axial direction is restricted.For example, if a stepped flange is formed on the rotary shaft, the bearing can be securely fixed between the flange on the rotary shaft and the joint body, and the rotation can be prevented. Since the bearing can be mounted simply by forming the flange portion on the shaft, the machining cost of the rotating shaft can be reduced.

According to the third means, when the high-pressure liquid is supplied to the hydraulic chamber, the first partition wall bulges and is pressed against the outer peripheral surface of the rotating shaft, and the second partition wall bulges to cause the flange of the rotating shaft to swell. By holding the inner ring with both parts under pressure, the joint body is fixed to the rotating shaft by the frictional force corresponding to the hydraulic pressure, and the inner ring is fixed to the joint body by the pressing force corresponding to the hydraulic pressure. Therefore, the bearing can be securely fixed to the rotary shaft with a required force, and the bearing can be mounted only by forming the flange portion on the rotary shaft, so that the machining cost of the rotary shaft can be reduced.

According to the fourth means, when the high-pressure liquid is supplied to the hydraulic chamber, the partition wall swells and presses against the inner peripheral surface of the mounting hole, so that the joint body is mounted by the frictional force corresponding to the hydraulic pressure. Since the bearing is restricted from moving in the axial direction, for example, if a stepped flange is formed in the mounting hole, the bearing can be securely fixed between the flange in the mounting hole and the joint body, and Since the bearing can be mounted simply by forming the flange portion in the mounting hole, the housing processing cost can be reduced.

According to the fifth means, when the high-pressure liquid is supplied to the hydraulic chamber, the first partition wall swells and is pressed against the inner peripheral surface of the mounting hole, and the second partition wall swells to form the mounting hole. By holding the outer ring together with the flange on both ends, the joint body is fixed in the mounting hole by the frictional force corresponding to the hydraulic pressure, and the outer ring is fixed to the joint body by the pressing force corresponding to the hydraulic pressure. Therefore, the bearing can be securely fixed to the mounting hole with a required force, and the bearing can be mounted only by forming the flange portion in the mounting hole, so that the machining cost of the housing can be reduced.

[Brief description of drawings]

FIG. 1 is a side sectional view showing a first embodiment of a bearing joint according to the present invention.

FIG. 2 is a side sectional view showing a second embodiment of the bearing joint of the present invention.

FIG. 3 is a side sectional view showing a third embodiment of the bearing joint of the present invention.

FIG. 4 is a side sectional view showing a fourth embodiment of the bearing joint of the present invention.

FIG. 5 is a side sectional view showing a fifth embodiment of the bearing joint of the present invention.

FIG. 6 is a configuration diagram showing an example of a conventional rotary shaft to which a bearing is fixed and a joint member.

FIG. 7 is a configuration diagram showing an example of a conventional rotary shaft to which a bearing is fixed and a joint member.

FIG. 8 is a configuration diagram showing an example of a conventional rotary shaft to which a bearing is fixed and a joint member.

FIG. 9 is a configuration diagram showing an example of a conventional housing to which a bearing is fixed and a joint member.

[Explanation of symbols]

1 ... Bearing, 1c ... Inner ring, 1d ... Outer ring, 10 ... Rotating shaft,
11 ... Mounting part, 11a ... Flange surface, 20 ... Housing, 21 ... Mounting hole, 21a ... Flange surface, 30, 40, 5
0,60,70… Bearing fittings, 31,41,61… Fitting body, 3
3, 42, 52, 62, 72 ... Hydraulic chamber, 34 ... Lubrication port, 36 ... Lubrication nipple, 37, 38, 43, 44, 63, 64 ... Partition.

Claims (5)

[Scope of utility model registration request] 1. A sleeve-shaped bearing joint that is inserted between a ring-shaped bearing and a rotary shaft to fix the bearing to the rotary shaft, the sleeve-shaped bearing joint being fitted onto the rotary shaft. A ring-shaped joint body externally fitted by the bearing, an annular hydraulic chamber formed along the surface facing the rotary shaft or the bearing in the joint body, and a high-pressure liquid in the hydraulic chamber. A first partition formed between the liquid supply means for supplying the liquid and the high pressure liquid to the liquid pressure chamber and a surface facing the rotary shaft when the high pressure liquid is supplied; A bearing joint comprising: a second partition wall formed between the hydraulic chamber and a surface facing the bearing, the second partition wall swelling and press-bonding to the inner peripheral surface of the bearing. 2. A bearing joint for axially fixing a bearing fitted onto a rotary shaft, and a ring-shaped joint main body fitted onto the rotary shaft together with the bearing, and an outer peripheral surface of the rotary shaft within the joint main body. An annular hydraulic chamber formed along a surface facing the hydraulic chamber, a liquid supply means for supplying a high-pressure liquid to the hydraulic chamber, a hydraulic chamber and a rotary shaft when the high-pressure liquid is supplied to the hydraulic chamber. And a partition wall formed between the outer peripheral surface of the rotary shaft and the partition surface that bulges and presses against the outer peripheral surface of the rotating shaft. 3. A bearing joint for axially fixing an inner ring of a bearing externally fitted to a rotary shaft, and a ring-shaped joint main body externally fitted to the rotary shaft together with the bearing, and a rotary shaft inside the joint main body. An annular hydraulic chamber formed along the outer peripheral surface and a surface facing the one end surface of the inner ring, a liquid supply means for supplying high-pressure liquid to the hydraulic chamber, and a high-pressure liquid for the hydraulic chamber. A first partition formed between the hydraulic chamber and the surface facing the rotating shaft during supply, and swelling and being pressed against the outer peripheral surface of the rotating shaft, and formed between the hydraulic chamber and the surface facing the inner ring, and swelling And a second partition wall for pressing and holding the inner ring at both end surfaces together with a stepped flange portion formed on the rotating shaft. 4. A bearing joint for axially fixing a bearing fitted in a mounting hole of a housing, and a ring-shaped joint body fitted in the mounting hole together with the bearing, and a mounting hole in the joint body. An annular hydraulic chamber formed along the surface facing the inner peripheral surface of the, a liquid supply means for supplying a high-pressure liquid to the hydraulic chamber, and a hydraulic pressure when the high-pressure liquid is supplied to the hydraulic chamber. A bearing joint, comprising: a partition wall formed between the chamber and a surface facing the mounting hole, the partition wall swelling and crimping to the inner peripheral surface of the mounting hole. 5. A bearing joint for axially fixing an outer ring of a bearing fitted in a mounting hole of a housing, and a ring-shaped joint body fitted in the mounting hole together with the bearing, and in the joint body. An annular hydraulic chamber formed along the inner peripheral surface of the mounting hole and a surface facing the one end surface of the outer ring, and a liquid supply means for supplying high-pressure liquid to the hydraulic chamber.
A first partition wall formed between the hydraulic chamber and a surface facing the mounting hole when the high-pressure liquid is supplied to the hydraulic chamber, and bulging to press the inner peripheral surface of the mounting hole and a surface facing the hydraulic chamber and the outer ring. And a stepped flange portion formed between the outer ring and the stepped flange portion formed in the mounting hole so as to press and hold the outer ring on both end surfaces.
And a partition wall of the bearing.