JP2006029563A - Member-to-member connection device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a member-to-member connecting device which connects a pair of members which relatively oscillate to each other, prevents an useless bending stress from occurring in the stay which is its component when it is made to resist the oscillation, and facilitates its construction. <P>SOLUTION: The connecting device 1 comprises the stay 7 which extends to bridge a pair of members 3 and 4 which constitutes an object and relatively oscilate and joints 8 which connect each end of the stay 7 with members 3 and 4 respectively. The joints 8 comprise spherical bodies 19 which are fixed to the ends of the stay 7, supporting sections 22 which are provided with fitting concave surfaces 21 into which projection surfaces 20 which is a part of the outer circumferential surface are fitted, and fasteners 23 which make it possible to fasten the spherical bodies 19 and the supporting sections 22 to the members 3 and 4 by pressure-contacting the fitting recess surface 21 with the partial projection surface 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a coupling device for members that includes a stay that couples a pair of relatively vibrating members to each other in a vehicle body, an engine, or the like of the vehicle, and the stays resist the vibration.

  Conventionally, there is a device shown in Patent Document 1 below as a coupling device between the following members. According to this publication, the member-to-member coupling device includes a stay that extends across a pair of members that constitute a motorcycle body and relatively vibrate, and each end of the stay is connected to each member. And a joint to be coupled to each.

  The stay includes a cylinder-shaped damper that attenuates the vibration. On the other hand, the joint includes a pivot shaft that pivotally supports the end of the stay relative to the member. More specifically, the connection of each end of the stay to each of the members is a pin joint structure by the joint.

  For this reason, when each end of the stay is connected to each member of the vehicle body by the joint, even if a bending stress is generated in the stay, the generation of this stress is prevented by the pin joint structure. The Therefore, it is possible to prevent unnecessary bending stress from being generated in the stay by assembling the stay. That is, it is possible to prevent unnecessary external force from being applied to the respective members from the stay.

  When the two members vibrate due to traveling of the vehicle or the like, an impact force acts on the stay only in the axial direction due to the pin joint structure. For this reason, this impact force is more effectively attenuated by the damper. As a result, the operability of the vehicle is kept good.

JP 2004-99013 A

  By the way, as described above, when both members in the vehicle vibrate with each other, the amplitude is generally about ± 0.35 mm and is extremely small. For this reason, if the length of the stay is increased to some extent, the rotation angle of the stay with respect to each member becomes extremely small.

  Therefore, the pin joint structure may be substantially unnecessary. In this case, the configuration of the joint having the pin joint structure as described above may be unnecessarily complicated.

  In addition, the vibration may cause rattling between the end of the stay and the pivot shaft of the joint. Therefore, in general, a cushioning material is interposed between the ends of these stays and the pivot shaft. Further, a structure in which grease is sealed between them is adopted. As a result, there is a problem in that the number of parts of the joint increases and the configuration becomes more complicated.

  As another conventional technique, there is one using a ball joint for the joint. This ball joint uses a sphere instead of the pivot shaft in the above-described conventional joint. For this reason, the same problems as described above also occur in the other conventional techniques.

  The present invention has been made paying attention to the above circumstances, and an object of the present invention is to couple a pair of relatively vibrating members to each other by a coupling device, and to make the coupling device counter the vibration. In this case, an unnecessary bending stress is not generated in the stays constituting the coupling device, and the configuration of the coupling device can be simplified.

According to the first aspect of the present invention, a stay 7 that extends over a pair of members 3 and 4 that constitute a certain object 2 and relatively vibrate, and each end of the stay 7 is attached to each of the members 3 and 4. In the coupling device between members provided with the joint 8 to be coupled,
The joint 8 is fixed to the end portion of the stay 7, and the support portion 22 is formed with a fitting concave surface 21 into which the convex surface 20 of the outer peripheral surface of the spherical body 19 is fitted. The fitting concave surface 21 is brought into pressure contact with a part of the convex surface 20, and a fastener 23 that enables the spherical body 19 and the support portion 22 to be fastened to the members 3 and 4 is provided.

  According to a second aspect of the present invention, in addition to the first aspect of the invention, the fastener 23 has an axial center 26 that is substantially orthogonal to the longitudinal direction of the stay 7 and is secured to the members 3 and 4. And the fitting hole 35 is formed in the spherical body 19 so that the bolt 27 is loosely fitted, and the fitting concave surface 21 is pressed against the partial convex surface 20 by twisting the bolt 27. is there.

  According to a third aspect of the present invention, in addition to the second aspect of the invention, the support portion 22 can be externally fitted to the bolt 27, and the support portion 22 can be temporarily fixed to the bolt 27 by this external fit. It is what.

  According to a fourth aspect of the invention, in addition to the first or second aspect of the invention, the stay 7 includes a damper 10 that attenuates the vibration.

  In this section, the reference numerals appended to the above terms are not to be construed as limiting the technical scope of the present invention to the section “Example” described later or the contents of the drawings.

  The effects of the present invention are as follows.

According to the first aspect of the present invention, members comprising a stay that extends over a pair of members that constitute a certain object and relatively vibrate, and a joint that couples each end of the stay to each of the members. In the coupling device of
The joint has a spherical body fixed to the end of the stay, a support portion formed with a fitting concave surface for fitting a partially convex surface of the outer peripheral surface of the spherical body, and the fitting to the partially convex surface. A fastener that presses the concave surface to enable the spherical body and the support portion to be fastened to the member;

  For this reason, when assembling the coupling device to these members in an attempt to couple the two members, first, the partially convex surface of the spherical body fixed to the end of the stay is fitted to the support portion. Fit in the concave surface.

  Next, the fastener is twisted. Then, external force starts to be applied to the spherical body from the support portion. When this external force causes a bending stress on the stay, the partial convex surface and the fitting concave surface slide relative to each other due to this stress, and the spherical body rotates around its center. And it is suppressed that an unnecessary bending stress arises in the said stay.

  Further, when the fastener is twisted, the fitting concave surface comes into pressure contact with the partial convex surface, and the spherical body and the support portion are fastened to the member. Thereby, each end of the stay is fixed to the member by each joint, that is, the two members are coupled to each other by the coupling device. For this reason, the said coupling apparatus opposes the mutual vibration of the said both members, ie, this vibration is attenuated or suppressed.

  Moreover, the coupling | bonding of the said both members by the said coupling device is achieved by making the said spherical body and a support part adhere to the said member integrally with a fastener.

  For this reason, it is not necessary for the above-mentioned coupling device to adopt a cushioning material interposed between the end of the stay and the pivot shaft as in the prior art or a structure capable of enclosing grease. It is. Therefore, the number of parts of the coupling device is reduced accordingly, and the configuration can be simplified.

  According to a second aspect of the present invention, the fastener includes a bolt that has an axis that is substantially perpendicular to the longitudinal direction of the stay and is fixed to the member. A spherical body is formed, and the fitting concave surface is pressed against the partial convex surface by twisting the bolt.

  For this reason, in the assembly operation of the coupling device, first, the bolt is inserted into the insertion hole of the spherical body and fixed to the member.

  As a result, the spherical body and the member of the stay to which the spherical body is fixed can be temporarily fixed. Therefore, the assembly | attachment operation | work of the coupling device with respect to the said member after that can be done easily.

  According to a third aspect of the present invention, the support portion can be externally fitted to the bolt, and the support portion can be temporarily fixed to the bolt by this external fit.

  For this reason, in the assembling operation of the coupling device, first, as described above, the bolt is inserted into the insertion hole of the spherical body, and the support portion is externally fitted to the bolt and fixed temporarily. Thereby, the said stay, a spherical body, a support part, and a fastener are made into one combined body. And this combined body should just be assembled | attached to the said member.

  Therefore, in the assembling operation of the coupling device, the assembling operation of the coupling device is further facilitated as compared with the case where the spherical bodies and the support portions which are the components of the coupling device are assembled to the members one by one. it can.

  According to a fourth aspect of the present invention, the stay includes a damper that attenuates the vibration.

  For this reason, if both the members are coupled by the coupling device, the vibration generated in these members is reliably damped by the damper of the coupling device.

  With regard to the coupling device for members according to the present invention, when a pair of relatively vibrating members are coupled to each other by the coupling device, and the coupling device is made to resist the vibration, the stay constituting the coupling device is useless. The best mode for carrying out the present invention is as follows in order to realize the object of preventing bending stress and simplifying the structure of the coupling device.

  That is, the member-to-member coupling device includes a stay extending so as to straddle a pair of members that constitute a certain object and relatively vibrate, and a joint for coupling each end of the stay to each of the members. Yes. The joint has a spherical body fixed to the end of the stay, a support portion formed with a fitting concave surface for fitting a partially convex surface of the outer peripheral surface of the spherical body, and the fitting to the partially convex surface. A fastener that presses the concave surface to enable the spherical body and the support portion to be fastened to the member;

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 denotes a coupling device. The coupling device 1 is configured to couple a pair of members 3 and 4 that constitute a certain object 2 and vibrate relatively to counteract the vibration. By this countermeasure, the vibration is attenuated or the vibration is suppressed.

  The object 2 is, for example, a vibration generator such as a motorcycle or a vehicle body, an engine, and a generator that are vehicles. The members 3 and 4 may be parts of a vehicle body frame. One member 3 is a vehicle body frame part and the other member 4 is an engine part supported by the vehicle body frame. May be.

  The coupling device 1 includes a stay 7 that extends linearly so as to straddle both the members 3 and 4, and a pair of joints 8 that respectively couple the ends of the stay 7 to the members 3 and 4. Yes.

  The stay 7 includes a hydraulic cylinder type damper 10. The damper 10 is disposed on an axis 11 that extends along the stay 7, and a cylinder tube 12 that is filled with oil, and a cylinder tube 12 that is fitted into the cylinder tube 12 so as to have two pressures in the cylinder tube 12. A piston 15 partitioned into oil chambers 13 and 14 and a piston rod 16 disposed on the shaft 11 and extending outward from one end of the cylinder tube 12 from the piston 15 are provided. A throttle passage for communicating the pressure oil chamber 13 and the pressure oil chamber 14 is provided. The other end portion of the cylinder tube 12 that is each end portion of the stay 7 and the extended end portion of the piston rod 16 are coupled to the members 3 and 4 by the joint 8, respectively.

  When both the members 3 and 4 vibrate relatively, the piston 15 reciprocates with a small stroke with respect to the cylinder tube 12. As a result, of the pressure oil chambers 13 and 14, the oil repeatedly flows from the one pressure oil chamber 13 whose pressure has increased to the other pressure oil chamber 14 through the throttle passage, whereby the vibration is reduced. Attenuated.

  In FIG. 1, the joint 8 includes a spherical body 19 that is fixed to each end of the stay 7, and a supporting concave surface 21 into which a partially convex surface 20 of the outer peripheral surface of the spherical body 19 is fitted. And a fastener 23 that presses the fitting concave surface 21 against the partially convex surface 20 so that the spherical body 19 and the support portion 22 can be fastened to the members 3 and 4.

  The fastener 23 includes a bolt 27 that has an axis 26 that is substantially perpendicular to the longitudinal direction (axis 11) of the stay 7 and is fixed to the members 3 and 4. More specifically, the axis 11 of the stay 7 and the axis 26 of the bolt 27 are orthogonal to each other.

  The bolt 27 includes a bolt body 28. The bolt main body 28 includes a shaft member 30 screwed into a female screw hole 29 formed at one end of the members 3 and 4 and a bolt head portion 31 formed integrally with the other end portion of the shaft member 30. I have. The bolt 27 includes a cylindrical sleeve 32 that is fitted on the other end of the shaft member 30 without rattling.

  The spherical body 19 is formed with a fitting hole 35 into which the sleeve 32 of the bolt 27 is loosely fitted. Each end surface of the spherical body 19 in the axial direction of the insertion hole 35 is the partially convex surface 20. A pair of the support portions 22 are provided in the axial direction of the bolt 27. The support portions 22 are also formed with insertion holes 36 into which the sleeves 32 of the bolts 27 are inserted.

  The end portions of the sleeves 32 of the bolts 27 are fitted into the fitting holes 36 of the support portions 22, whereby the support portions 22 are externally fitted to the end portions of the sleeves 32. In this case, the outer peripheral surface of each end portion of the sleeve 32 and the inner peripheral surface of the insertion hole 36 of each support portion 22 are in pressure contact. That is, the support portions 22 can be temporarily fixed (fitted) to the end portions of the sleeve 32 of the bolt 27.

  A description will be given of a case where the coupling device 1 is assembled to the members 3 and 4 in an attempt to couple the members 3 and 4 together.

  First, the sleeve 32 of the bolt 27 is inserted into the insertion hole 35 of the spherical body 19. Further, the support portions 22 are externally fitted to the end portions of the sleeve 32 so that the fitting concave surfaces 21 are lightly joined to the partial convex surfaces 20, and are temporarily fixed. As a result, the stay 7, the spherical body 19, the support portions 22, and the support portions 22 of the bolts 27 of the fasteners 23 are combined into a single combination 39 (two-dot chain line in FIG. 1).

  In the above case, the insertion hole 35 of the spherical body 19 and the sleeve 32 of the bolt 27 are fitted in a loose fit. For this reason, in the combination 39, the spherical body 19 fixed to the end of the stay 7 and the support portions 22 and the sleeves 32 of the bolts 27 have a certain degree around the center 41 of the spherical body 19 to some extent. It can be freely rotated (in FIG. 1, a single-dot chain line).

  Next, the bolt body 28 of the bolt 27 fitted into the sleeve 32 is screwed into the female screw holes 29 of the members 3 and 4. Then, the bolt body 28 is twisted so that the fitting concave surface 21 of the support portion 22 is pressed against the partial convex surface 20 of the spherical body 19. Then, it is pushed by the bolt head 31 and the support portions 22 slide toward the spherical body 19 with respect to the sleeve 32.

  Then, due to the further twisting operation of the bolt body 28, external force starts to be applied to the spherical body 19 from the support portion 22. When a bending stress is to occur in the stay 7 due to the external force, the partial convex surface 20 and the fitting concave surface 21 slide relative to each other due to the stress, and the spherical body 19 has its center 41. It is suppressed that unnecessary bending stress is generated in the stay 7 by rotating around.

  Further, when the bolt body 28 is twisted, the spherical body 19 and the pair of support portions 22 are sandwiched between the members 3 and 4 and the bolt head portion 31. Thereby, each fitting concave surface 21 is press-contacted to each said partial convex surface 20, and the said spherical body 19 and each support part 22 are fastened by the said members 3 and 4 side. As a result, the ends of the stay 7 are fixed to the members 3 and 4 by the joints 8, that is, the members 3 and 4 are coupled to each other by the coupling device 1.

  On the other hand, the operation of releasing the connection between the members 3 and 4 by the connecting device 1 may be performed in the reverse order of the assembling operation. In this case, the support portions 22 can be detached from the sleeve 32 by pushing the sleeve 32 with a press or the like via a pushing jig. For this reason, the damper 10 of the said coupling apparatus 1 opposes the mutual vibration of the said members 3 and 4, ie, this vibration is attenuate | damped.

  Further, the coupling of the members 3 and 4 by the coupling device 1 is achieved by integrally fixing the spherical body 19 and the support portion 22 to the members 3 and 4 with a fastener 23.

  For this reason, adopting a structure capable of enclosing a cushioning material or grease that is interposed between the end of the stay and the pivot shaft as in the prior art, It is unnecessary. Therefore, the number of parts of the coupling device 1 is reduced correspondingly, and the configuration can be simplified.

  Further, as described above, the fastener 23 includes the bolt 27 that is fixed to the members 3 and 4 with the shaft center 26 substantially orthogonal to the longitudinal direction of the stay 7, and the bolt 27 is loosely fitted. A fitting hole 35 is formed in the spherical body 19 so that the fitting concave surface 21 is pressed against the partial convex surface 20 by twisting the bolt 27.

  For this reason, in the assembly work of the coupling device 1, first, the bolt 27 is inserted into the insertion hole 35 of the spherical body 19 and fixed to the members 3 and 4.

  As a result, the spherical body 19 and the members 3 and 4 of the stay 7 to which the spherical body 19 is fixed can be temporarily fixed. Therefore, the assembly | attachment operation | work of the coupling device 1 with respect to the said members 3 and 4 after that can be done easily.

  Further, as described above, the support portion 22 can be externally fitted to the bolt 27, and the support portion 22 can be temporarily fixed to the bolt 27 by this external fit.

  For this reason, in the assembly work of the coupling device 1, first, as described above, the bolt 27 is inserted into the insertion hole 35 of the spherical body 19, and the support portion 22 is externally fitted to the bolt 27. Stop and fix. Thereby, the stay 7, the spherical body 19, the support portion 22, and the fastener 23 are combined into one combined body 39. And this combination 39 should just be assembled | attached to the said members 3 and 4. FIG.

  Therefore, in the assembling work of the coupling device 1, the coupling device 1 is compared with assembling the spherical body 19 and the support portion 22, which are components of the coupling device 1, to the members 3 and 4 one by one. 1 assembly work can be further facilitated.

  As described above, the stay 7 includes the damper 10 that attenuates the vibration.

  For this reason, if both the members 3 and 4 are coupled by the coupling device 1, the vibration generated in the members 3 and 4 is reliably damped by the damper 10 of the coupling device 1.

  Although the above is based on the illustrated example, the stay 7 may be a simple bar-like material that does not include the damper 10, and in this case, the vibration is suppressed. The spherical body 19 may be fixed to the end of the stay 7 integrally with each other, or may be formed separately and then fixed with a fastener or the like.

  Further, the bolt body 28 and the sleeve 32 of the bolt 27 may be integrally formed. The female screw hole 29 may be constituted by a nut. One of the support portions 22 may be integrally formed with the bolt head portion 31.

FIG. 3 is a partially enlarged sectional view of FIG. 2. It is the whole partial broken view of a coupling device.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Coupling device 2 Object 3 Member 4 Member 7 Stay 8 Joint 10 Damper 19 Spherical body 20 Part convex surface 21 Fitting concave surface 22 Support part 23 Fastener 26 Axle 27 Bolt 28 Bolt main body 35 Insertion hole 36 Insertion hole 39 Combination 41 center

Claims (4)

In a coupling device between members comprising a stay that extends over a pair of members that constitute a certain object and relatively vibrate, and a joint that couples each end of the stay to each of the members,
The joint has a spherical body fixed to the end of the stay, a support portion formed with a fitting concave surface for fitting a partially convex surface of the outer peripheral surface of the spherical body, and the fitting to the partially convex surface. An apparatus for joining members, comprising: a fastener that presses a concave surface to enable the spherical body and the support portion to be fastened to the member.   The fastener includes a bolt having an axis substantially perpendicular to the longitudinal direction of the stay and fixed to the member, and an insertion hole for loosely fitting the bolt is formed in the spherical body. The apparatus for coupling members according to claim 1, wherein the fitting concave surface is in pressure contact with the partial convex surface by twisting a bolt.   The member-to-member coupling device according to claim 2, wherein the support portion can be externally fitted to the bolt and the support portion can be temporarily fixed to the bolt by the external fit.   The member-to-member coupling device according to claim 1, wherein the stay includes a damper that attenuates the vibration.

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