JP2015003547A - Vehicle body reinforcement unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To inexpensively configure a vehicle body reinforcement unit that improves riding comfort by cushioning an impact.SOLUTION: A reinforcement member B arranged between a pair of frame parts 1 of a vehicle body A comprises: a reinforcement member Ba that is supported by one of right and left side members 1; a displacement suppression mechanism Bb that brings about the action of an urging force against reduction displacement reducing a relative distance between the right and left side members 1; and an attenuation mechanism Bc that makes a braking force act on the displacement of a pair of displacement members 11 and 12 displaced in association with the displacement of the pair of frame parts 1.

Description

  The present invention relates to a vehicle body reinforcing unit.

  Patent Document 1 as a vehicle body reinforcement unit includes left and right side members constituting a vehicle body frame and a suspension cross member for connecting these members, and one end of a left and right reinforcement member (brace) is connected to a central position of the suspension cross member. A configuration is shown in which the other ends of the left and right reinforcing members are connected and fixed to corresponding ones of the left and right side members.

  In this Patent Document 1, an iron pipe material in which both end portions are crushed to form a flange portion is used as a reinforcing member (brace), and one end portion of this reinforcing member is bolted to a suspension cross member and the other end portion is fixed. The part is bolted to the side member.

  Further, Patent Document 2 as a vehicle body reinforcement unit shows a configuration in which a reinforcement member (a vehicle body reinforcement device in the literature) is detachably provided along a side frame extending in the front-rear direction of the vehicle body frame with the longitudinal direction being the front-rear direction. Has been.

  The reinforcing member of Patent Document 2 includes a piston rod that is movably provided inside a hydraulic cylinder, and encloses oil inside the hydraulic cylinder so as to limit the flow of oil when the hydraulic cylinder and the piston extend and contract. In this way, it has a configuration in which a damping force is applied. A damping force can be applied by connecting the outer end of the hydraulic cylinder of the reinforcing member of this configuration and the tip of the piston to a predetermined frame of the vehicle body.

JP-A-5-116648 W2006 / 090586

  In the reinforcing unit described in Patent Document 1, since the reinforcing member has a simple configuration, the vehicle body can be reinforced at a low cost and can be easily attached and detached, but has no function of attenuating the vibration of the vehicle body. there were.

  Moreover, in the reinforcement unit described in Patent Document 2, a force that suppresses the expansion and contraction operation of the hydraulic cylinder and the piston rod of the reinforcement member can be applied. Is to improve. Moreover, since the reinforcement member described in Patent Document 2 is provided at a portion of the vehicle body frame (monocoque body) facing the road surface on the outside of the vehicle body, it is also considered to be attached and detached by the user. However, since this reinforcing unit has a large number of parts, the cost increases, and the versatility is low.

  The body frame of a passenger car has a predetermined rigidity, but it is also desired to improve the riding comfort according to the driver's preference by attaching a reinforcing member. It is desired that the reinforcing member mounted in this way not only improves the rigidity of the vehicle body frame but also softens the impact when an external force acts on the vehicle body frame and suppresses vibration. In addition, when the reinforcing member is provided, it is necessary to consider mounting on the outer side or the bottom side of the body frame so as not to deteriorate the maintainability and the comfortability.

  An object of the present invention is to inexpensively configure a vehicle body reinforcing unit that reduces impact and improves ride comfort.

  A feature of the present invention is that a reinforcing member disposed between a pair of frame portions of a vehicle body has a pair of displacement members that are relatively displaced in accordance with a relative displacement of the pair of frame portions, and a relative relationship between the pair of displacement members. And a damping mechanism for applying a braking force to a proper operation.

According to this configuration, when the relative distance between the pair of frame portions changes, the pair of displacement members are displaced, and the damping mechanism applies the braking force when the pair of displacement members are displaced in this way. Therefore, it is possible to suppress a sudden displacement. In addition, since the damping mechanism can be configured using a friction force as a mechanism for applying a braking force, the structure is simple and the cost can be reduced.
Therefore, the vehicle body reinforcement unit that reduces the impact and improves the riding comfort is constructed at low cost.

  In the present invention, the damping mechanism includes a cylindrical portion formed by an axial core and a coaxial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and the axial core as the other of the pair of displacement members. An inner fitting portion that fits into the cylindrical portion with a coaxial core, a friction member that contacts the inner periphery of the cylindrical portion or the outer periphery of the inner fitting portion, and a biasing body that biases the friction member in the contact direction And may be provided.

  According to this, when the pair of frame portions are relatively displaced, the cylindrical portion and the inner fitting portion are relatively displaced. When this displacement is performed, the friction member is moved by the urging force to the tube. The relative movement force is attenuated by coming into contact with the inner periphery of the shaped portion or the outer periphery of the inner fitting portion. Thereby, the relative displacement of the pair of frame portions can be attenuated by the frictional force set by the urging force.

  In the present invention, the damping mechanism includes a cylindrical body formed of an axial core and a coaxial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and the shaft core as the other of the pair of displacement members. A shaft-like body fitted into the tubular body with a coaxial core, and a flexible damping tubular body that is in close contact with the inner periphery of the tubular body and the outer periphery of the shaft-like body and is elastically deformable. Also good.

  According to this, when the pair of frame portions are relatively displaced, the tubular body and the shaft-like body are relatively displaced, and when this displacement is performed, the damping tubular body is not elastically deformed. The braking force can be applied to the relative displacement of the pair of frame portions by the drag force.

  The present invention provides a cylinder in which the damping mechanism is formed in a cylindrical shape that is coaxial with an axial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and a friction surface that has a smaller diameter toward the one end is formed on the inner circumference. A cylindrical case, a shaft-like portion fitted into the inside of the cylindrical case as the other of the pair of displacement members with a coaxial core, a friction surface of the cylindrical case, and an outer peripheral surface of the shaft-like portion And an urging force for applying an urging force that presses the inner surface of the chuck member against the outer periphery of the shaft-shaped portion in a state where the outer peripheral surface of the chuck member is pressed against the friction surface of the cylindrical case. And a mechanism.

According to this, the chuck member is pressed against the friction surface of the cylindrical case by the biasing force of the biasing mechanism, and at the same time, the chuck member is pressed against the outer peripheral surface of the shaft portion by the biasing force of the biasing mechanism. When the pair of frame portions are relatively displaced, the pair of frames is caused by the frictional force acting between the friction surface of the cylindrical case and the chuck member and the frictional force acting between the chuck member and the shaft-like portion. A braking force can be applied to the relative displacement of the parts.
Further, according to this configuration, it is possible to obtain a required braking force by adjusting the urging force of the urging mechanism.

  The present invention provides displacement suppression that applies an urging force that resists displacement in at least one of an expansion displacement in a direction in which the relative distance between the pair of frame portions expands and a reduction displacement in a direction in which the relative distance decreases. A mechanism may be provided.

  According to this, in the case where there is any one of an expansion displacement in which the relative distance between the pair of frame portions is enlarged and a reduction displacement in which the relative distance is reduced, the displacement suppression mechanism generates an urging force that suppresses the displacement. Make it work. That is, in a situation where the frame of the vehicle body is displaced due to an external force acting, a larger urging force can be applied in a direction to suppress the displacement as the displacement amount is larger, and the displacement is suppressed more favorably.

It is a top view which provided the vehicle body reinforcement unit with the 1st mounting form in the vehicle body. It is a top view provided with a pair of vehicle body reinforcement unit by the 2nd mounting form in the vehicle body. It is sectional drawing of the vehicle body reinforcement unit of 1st Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 2nd Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 3rd Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 4th Embodiment. It is the VII-VII sectional view taken on the line of FIG. It is sectional drawing of the vehicle body reinforcement unit of 5th Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 6th Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 7th Embodiment. It is sectional drawing of the vehicle body reinforcement unit of 8th Embodiment. It is sectional drawing which shows arrangement | positioning of the clamp member and intermediate member of 8th Embodiment. It is the XIII-XIII sectional view taken on the line of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Basic configuration]
As shown in FIGS. 1 and 2, a vehicle body A of a passenger car includes left and right side members 1 and a cross member 2 having both ends connected to the side members 1. The left and right side members 1 correspond to a pair of frame portions.

  In this embodiment, the reinforcing member Ba of the vehicle body reinforcing unit B of the present invention is provided in a horizontally long posture straddling the left and right side members 1 as shown in FIG. 1 (hereinafter referred to as a first mounting posture), and FIG. As shown in FIG. 2, the cross member 2 is arranged so as to extend across the center position in the left-right direction, the left side member 1, and the right side member 1 (hereinafter referred to as a second mounting posture).

  In the second mounting posture, one of the side member 1 and the cross member 2 corresponds to one of the pair of frame portions, and the other of the side member 1 and the cross member 2 corresponds to the other of the pair of frame portions. A vehicle body reinforcing unit B is provided across the side bracket 3 provided on the side member 1 and the center bracket 4 formed on the cross member 2.

  The vehicle body reinforcement unit B shown in FIGS. 1 and 2 is provided on the bottom wall side of the vehicle body. However, the vehicle body reinforcement unit B of the present invention is not limited to the one disposed at such a position. The mounting posture may be arranged in a region along the front-rear direction of the vehicle body inside or outside the vehicle compartment, for example, with a reinforcing member Ba so as to have a vertical posture at the front position of the trunk room. Absent. In particular, the vehicle body reinforcing unit B according to the present invention allows a user to arbitrarily attach or detach using a hole formed in the frame portion 1 of the vehicle body A.

[First Embodiment: Vehicle Body Reinforcement Unit in First Mounting Mode]
As shown in FIGS. 1 and 3, the vehicle body reinforcement unit B of the first embodiment is a reduction in which the relative distance between the reinforcement member Ba supported by one of the left and right side members 1 and the left and right side members 1 is reduced. A displacement suppression mechanism Bb that applies an urging force that resists displacement and an operation damping mechanism Bc are provided.

  The reinforcing member Ba is a cylindrical inner cylinder formed on the outer periphery with a cylindrical outer cylinder 11 centering on the main axis X and a male screw part 12a that is screwed into the inner threaded female part 11a of the outer cylinder 11. 12, a lock nut 13 that is screwed into the male screw portion 12 a of the inner cylinder 12, and a slide holder 21. A first operated surface 11b is formed on the outer periphery of the outer cylinder 11 in parallel with each other. A second operated surface 12 b is formed on the outer periphery of the inner cylinder 12 in parallel with each other.

  A fixed holder 14 is fixed to the outer end of the outer cylinder 11, and the fixed holder 14 is formed with a first inclined fitting surface 14a having a rotationally inclined surface whose diameter decreases toward the outer end side along the main axis X. A first engagement rod 15 that is coaxial with the main shaft X and protrudes outward is formed on the outer end side.

  The displacement suppression mechanism Bb includes a bottomed cylindrical slide holder 21 that is slidably fitted to the outer end of the inner cylinder 12 in a direction along the main axis X, and the bottom of the slide holder 21 and the outer side of the inner cylinder 12. A plurality of displacement restraining springs 22 composed of disc springs as urging members sandwiched between the ends are provided. The outer end of the slide holder 21 is formed with a tapered second fitting surface 21a having a diameter that decreases toward the outer end along the main axis X. The outer end of the slide holder 21 is coaxial with the main axis X and extends outward. A second engagement rod 23 is formed so as to protrude from the center.

  The displacement suppression mechanism Bb functions so that the urging force of the displacement suppression spring 22 acts as a force against displacement when the displacement is reduced so that the relative distance between the left and right side members 1 is reduced. Further, it is possible to change the urging force by changing the number and direction of the disc springs functioning as the displacement suppression spring 22 and the initial crushing height. For example, the user changes the number and the direction of the disc springs. This will give you the ride you want. The means for changing the urging force in this way is not limited to the first embodiment, and can be applied to a configuration provided with a disc spring in the embodiment described below.

  The operation damping mechanism Bc is an urging body that is fitted into a hole formed by a coaxial core and a plurality of orthogonal shaft cores Y in a posture orthogonal to the main shaft core X with respect to the cylindrical portion of the slide holder 21. The friction member 24 includes a spring body 25 formed of a coil spring so as to apply an urging force that presses the friction member 24 against the outer peripheral surface of the inner cylinder 12, and a retaining ring 26 that prevents the spring body 25 from coming off. Yes. In the first embodiment, the inner cylinder 12 and the slide holder 21 are displacement members.

  This operation damping mechanism Bc assumes that the friction member 24 is brought into direct contact with the outer surface of the inner cylinder 12. For example, the braking force required by forming a resin film on the outer surface of the inner cylinder 12. You may comprise so that it may obtain. The configuration for obtaining the necessary frictional force is not limited to the first embodiment, and can be applied to a configuration having the same configuration in the embodiments described below.

  The operation damping mechanism Bc is relatively moved when a force is applied in a direction in which the left and right side members 1 approach each other along the main axis X, and the inner cylinder 12 and the slide holder 21 operate in a contracting direction. It acts to cause a resistance force due to friction to act on it, to apply a braking force to the relative movement, and to attenuate this relative movement.

  In the vehicle body reinforcement unit B, a flexible material such as rubber or resin is used to prevent dust from entering the boundary between the outer periphery of the inner cylinder and the slide holder 21 and to prevent dust from adhering to the outer periphery of the inner cylinder 12. A bellows 27 made of a sex material is provided.

  Support plugs 28 as support members are fitted into fitting holes formed in opposing surfaces of the left and right side members 1. The fitting hole is formed coaxially with the above-described main spindle X, and the support plug 28 has a fitting protrusion 28a inserted into the fitting hole of the side member 1 and the main spindle X. A funnel-shaped concave surface 28b that is deeper as the position is formed, and an engagement hole 28c that is coaxial with the main spindle X is formed.

  With this configuration, when the vehicle body reinforcing unit B is mounted between the left and right side members 1, the length of the reinforcing member Ba in the direction of the main axis X (the length of the outer cylinder 11 and the inner cylinder 12). ) And the left and right first engagement rods 15 and second engagement rods 23 are engaged with the corresponding engagement holes 28c of the support plug 28.

  In this state, the outer cylinder 11 and the inner cylinder 12 are relatively rotated so that the fitting protrusions 28a of the left and right support plugs 28 are fitted in the fitting holes of the side members 1, and the left and right side members 1, the left and right support plugs 28, Then, the fixed holder 14 and the slide holder 21 are brought into close contact with each other in the direction of the main axis to create a state in which an initial load is applied to the displacement suppression spring 22. In this state, the extension amount of the outer cylinder 11 and the inner cylinder 12 is fixed by bringing the lock nut 13 into contact with the inner end side of the outer cylinder 11. As described above, the screw-type length adjusting portion L that adjusts the length of the reinforcing member Ba by the relative rotation of the outer cylinder 11 and the inner cylinder 12 is configured.

  The support plug 28 is fitted in the fitting holes of the left and right side members 1 in advance, and the reinforcing member Ba is extended to support the first engagement rod 15 and the second engagement rod 23 correspondingly. The mounting order may be set so as to engage with the engagement hole 28c of the plug 28.

  As described above, in a state where the reinforcing member Ba is mounted, the first fitting surface 14 a of the fixed holder 14 abuts on the concave surface 28 b of the support plug 28, and the second fitting surface 21 a of the slide holder 21 is of the support plug 28. It contacts the concave surface 28b. Furthermore, the state where the left and right support plugs 28 come into contact with the corresponding side members 1 is reached.

  In particular, the concave surface 28b of the support plug 28 has a centering function, and the first fitting surface 14a and the concave surface 28b come into contact with each other, and the second fitting surface 21a comes into contact with the concave surface 28b. The abutting members approach each other in the direction approaching the main shaft core X, the position of the main shaft core X is determined, and the posture of the main shaft core X can be held in a posture orthogonal to the left and right side members 1.

  When the outer cylinder 11 and the inner cylinder 12 are relatively rotated, a tool such as a spanner is hung on the first operated surface 11b of the outer cylinder 11 and the second operated surface 12b of the inner cylinder 12. A relative rotation operation is performed. The lock nut 13 is also rotated by a tool such as a spanner, and after reaching the locked state, both ends of the bellows 27 are fixed.

[Operating form]
In the vehicle body reinforcing unit B of the first embodiment, when an external force acts on the vehicle body frame and the left and right side members 1 are displaced in a direction approaching each other, the reinforcing member Ba ( The outer cylinder 11 and the inner cylinder 12) are displaced. Due to this displacement, the plurality of displacement suppression springs 22 of the displacement suppression mechanism Bb are compressed, and the biasing force of the displacement suppression springs 22 accompanying this compression acts in the direction against the displacement, and the left and right side members 1 are displaced in the approaching direction. Suppress.

  In the vehicle body reinforcing unit B, when the left and right side members 1 are displaced in a direction approaching each other, and the reinforcing member Ba (the outer cylinder 11 and the inner cylinder 12) is displaced in the direction of being inserted into the slide holder 21, During the displacement, the friction member 24 of the operation damping mechanism Bc presses against the outer periphery of the inner cylinder 12 to apply a braking force to the relative movement force by the friction force, thereby attenuating this relative movement and suppressing a rapid displacement. Instead, the amplitude is reduced when vibration is involved.

[Second Embodiment: Vehicle Body Reinforcement Unit in Second Mounting Mode]
Unlike the vehicle body reinforcement unit B of the first embodiment described above, the displacement suppression mechanism Bb resists the displacement when any force is applied to the vehicle body reinforcement unit B in the compressing direction or the extending direction. The operation damping mechanism Bc is configured to attenuate the displacement. In particular, in this second mounting configuration, the main shaft core X of the vehicle body reinforcing unit B is inclined with respect to the front-rear direction of the vehicle body A. Therefore, when the left and right side members 1 are displaced inward and outward, It functions in both cases of displacement in the direction.

  As shown in FIGS. 2 and 4, in the vehicle body reinforcing unit B of the second embodiment, the reinforcing member Ba includes the outer cylinder 11, the inner cylinder 12, and the lock nut 13 as in the first embodiment. ing. A fixed holder 14 is fixed to the outer end of the outer cylinder 11, and a tapered first fitting surface 14 a that decreases in diameter toward the outer end side along the spindle axis X is formed on the fixed holder 14. A first engagement rod 15 that is coaxial with the main shaft X and protrudes outward is formed on the outer end side. Further, a thread portion is formed on the outer periphery of the first engagement rod 15.

  The vehicle body reinforcement unit B has a support plug 28 as a support member with which the first engagement rod 15 engages, and a threaded surface is formed on the outer periphery of the fitting protrusion 28a of the support plug 28. A screw surface is formed on the inner periphery of the hole 28c.

  Further, a screw shaft 32 is formed so as to protrude along the main axis X through a connecting plate 31 at the outer end of the inner cylinder 12 of the reinforcing member Ba. A plurality of displacement suppression springs 22 made up of disc springs as biasing members constituting the displacement suppression mechanism Bb are externally fitted to the screw shaft 32 at positions sandwiching the plate portion 3a of the side bracket 3, and the plurality of displacement suppression springs. A flat washer 33 is fitted on the outer end of the spring 22 and a plurality of nuts 34 are screwed together.

  Thus, the displacement suppression mechanism Bb is configured by the configuration having the plurality of displacement suppression springs 22. In the displacement suppression mechanism Bb, when the relative distance between the left and right side members 1 is expanded and displaced in the increasing direction, the outer displacement suppression spring 22 as the first urging member resists the increase of the relative distance ( Apply a biasing force. Further, when the relative distance between the left and right side members 1 is reduced and displaced in the direction of reducing, the inner displacement suppression spring 22 as the second urging member resists (suppresses) the relative distance. Function to act. In the displacement restraining spring 22 shown in each embodiment described below, the first biasing member applies the biasing force in the direction against the increase in the relative distance of the frame portion, and the relative distance of the frame portion. It is the second urging member that applies the urging force in a direction against the reduction of the second urging member.

  Further, a slide support 36 is provided on the outer end of the inner cylinder 12 of the reinforcing member Ba so as to be slidably movable in the direction along the main axis X, and the slide support 36 is connected to the side bracket 3. A flange portion 36a is formed. In the second embodiment, the inner cylinder 12 and the slide support 36 are displacement members.

  The cylindrical portion of the slide support 36 has a friction member 24 fitted in a hole formed by a coaxial core and an orthogonal axis Y in a posture orthogonal to the main axis X, and the friction member 24 is connected to the inner cylinder. The operation damping mechanism Bc is configured by including a spring body 25 that exerts an urging force that presses the outer peripheral surface of the spring body 25 and a retaining ring 26 that prevents the spring body 25 from coming off.

  In addition, the vehicle body reinforcing unit B includes an anti-vibration member 37 that suppresses vibrations such as rubber and sponge in the internal space of the outer cylinder 11 and the internal space of the inner cylinder 12.

  With this configuration, in the state where the thread surface of the first engagement rod 15 of the fixed holder 14 is screwed into the thread portion of the engagement hole 28 c of the support plug 28, the fitting protrusion 28 a of the support plug 28 is connected to the center bracket 4. The one end side of the reinforcing member Ba is fixed to the center bracket 4 by being inserted into the fitting hole and screwing the fixing nut 28d into the threaded surface of the fitting protrusion 28a. In this state, the lock-off prevention nut 15a is screwed onto the thread surface of the first engagement rod 15 to ensure the fixing.

  With the one end fixed in this manner, the slide support 36 is fitted on the outer end side of the inner cylinder 12, and the displacement suppression spring 22 is screwed in a state where the plate portion 3 a of the side bracket 3 is sandwiched. The shaft 32 is inserted into the through hole of the plate portion 3 a of the side bracket 3, a flat washer 33 is disposed at the outer end position of the screw shaft 32, and a plurality of nuts 34 are fixed. Further, by operating the plurality of nuts 34, it is possible to simultaneously adjust the load of the displacement suppression spring 22 arranged at a position sandwiching the plate portion 3a. Also in this configuration, the screw-type length adjusting portion L that adjusts the length of the reinforcing member Ba by the relative rotation of the outer cylinder 11 and the inner cylinder 12 is configured.

  Further, the mounting of the vehicle body reinforcing unit B is completed by fixing the flange portion 36 a of the slide support 36 to the plate portion 3 a of the side bracket 3 by the fixing bolt 38 and fixing the side bracket 3 to the side member 1.

  When the vehicle body reinforcement unit B is attached to the vehicle body A in this way, the relative rotation amount between the outer cylinder 11 and the inner cylinder 12 can be reduced by moving the attachment position of the side bracket 3 with respect to the side member 1. It becomes.

  In the second embodiment, when the outer cylinder 11 and the inner cylinder 12 are relatively rotated, the first operated surface 11b of the outer cylinder 11, the second operated surface 12b of the inner cylinder 12, A tool such as a wrench is put on and is rotated relative to each other. The lock nut 13 is also rotated by a tool such as a spanner, and after reaching the locked state, both ends of the bellows 27 are fixed.

[Operating form]
In the vehicle body reinforcement unit B according to the second embodiment, two external forces are applied to the vehicle body reinforcement unit B in any direction between the direction of compression along the main axis X and the direction of separation. Since the displacement suppression spring 22 of one of the displacement suppression mechanisms Bb (which functions as the first urging member or the second urging member) is compressed, the urging force of the displacement suppression spring 22 accompanying this compression resists the displacement. Acting in the direction of movement to suppress displacement.

  In addition, the relative displacement between the inner cylinder 12 and the slide support 36 is not affected when an external force is applied in either the direction in which the vehicle body reinforcing unit B is compressed in the direction along the main axis X or the direction in which it is separated. At this time, the friction member 24 of the operation damping mechanism Bc presses against the outer periphery of the inner cylinder 12 to attenuate the relative movement force by the braking force, suppress rapid displacement, and reduce the amplitude when accompanied by vibration.

  In particular, since the vibration isolating member 37 is provided inside the reinforcing member Ba, the vibration isolating member 37 can suppress vibration even in a situation where the reinforcing member Ba vibrates in a direction orthogonal to the main axis X. .

  The vehicle body reinforcement unit B of the second embodiment is not limited to the second mounting form, and can be used by mounting in the first mounting form.

  The vehicle body reinforcing unit B of the present invention is not limited to the configuration of the first embodiment and the second embodiment, and can be configured as in the following embodiment. In addition, the configuration of any of the embodiments described below can be provided in the vehicle body A in a mounting mode other than the first mounting mode and the second mounting mode.

[Third Embodiment]
In the third embodiment, as shown in FIG. 5, the reinforcing member Ba is configured by disposing a shaft body 42 coaxially with the main shaft core X inside the main cylindrical body 41. The shaft body 42 has a shaft shape arranged on the same axis as the main shaft core X, and a large-diameter portion 42a is formed at the center. A plurality of displacement suppression springs 22 as urging members are arranged at positions sandwiching the thick part 41 a at the end of the main cylinder 41, and a shaft body 42 is arranged at a position where these displacement suppression springs 22 are inserted. Two displacement suppression mechanisms Bb are configured by screwing the adjusting nut 43 into the screw portion at the end of the shaft body 42. In the third embodiment, the main cylindrical body 41 and the shaft body 42 are displacement members.

  When the main cylinder 41 and the shaft body 42 are displaced in a direction extending along the main axis X, the displacement suppression mechanism Bb has a plurality of displacements outside the main cylinder 41 due to pressure from the adjustment nut 43. The restraining spring 22 is compressed. On the contrary, when the main cylindrical body 41 and the shaft body 42 are displaced in a compressing direction in the direction along the main axis X, the pressure of the main cylindrical body 41 is caused by the pressure from the large-diameter portion 42a of the shaft body 42. The inner displacement suppression spring 22 is compressed.

  In addition, this displacement suppression mechanism Bb adjusts the amount of compression of the two displacement suppression springs 22 simultaneously by adjusting the tightening amount by the adjustment nut 43 to adjust the strength of the force against the displacement. Is possible.

  A flexible attenuating cylindrical body 44 is provided that can be deformed in a cylindrical shape and in a state of being in close contact between the inner surface of the main cylindrical body 41 as a cylindrical body and the inner surface of the shaft body 42 as a shaft-shaped body. The operation damping mechanism Bc is configured by screwing the holding body 45 that determines the position of the damping cylinder 44 into the end of the main cylinder 41.

  In this operation damping mechanism Bc, even if the main cylinder 41 and the shaft 42 are relatively displaced in either the direction extending along the main axis X or the direction of compression, the attenuation cylindrical body 44 has the main axis. The relative moving force is attenuated by the viscoelastic force when compressed in the X direction.

  A bracket cylinder 46 is screwed into a thread portion on the outer periphery of the main cylinder body 41 on which the displacement suppression mechanism Bb is disposed, and the bracket cylinder 46 is a bracket nut that is screwed into the thread section of the main cylinder body 41. 47 is fixed. The bracket cylinder 46 is provided with a connecting plate 46a. Also in the third embodiment, the screw type length adjusting portion L that adjusts the length of the reinforcing member Ba by the relative rotation of the bracket cylinder 46 with respect to the main cylinder 41 is configured.

  As described above, the vehicle body reinforcing unit B may be mounted on the vehicle body in either the first mounting mode or the second mounting mode. For example, when mounting in the first mounting mode, the connecting plate 46a. Is connected to one side member 1, and the outer end portion of the shaft body 42 is connected to the other side member 1.

[Operating form]
In the vehicle body reinforcing unit B according to the third embodiment, two external forces are applied to the vehicle body reinforcing unit B in any direction between the direction of compression along the main axis X and the direction of separation. Since one displacement suppression spring 22 of the displacement suppression mechanism Bb is compressed, the urging force of the displacement suppression spring 22 accompanying this compression acts in a direction against the displacement to suppress the displacement.

  In addition, when an external force is applied in any direction between the direction in which the vehicle body reinforcing unit B is compressed in the direction along the main axis X and the direction in which the body reinforcing unit B is separated, the main cylinder 41 and the shaft 42 are subjected to relative displacement. The damping cylindrical body 44 of the operation damping mechanism Bc attenuates the relative movement force by the viscoelastic force.

[Fourth Embodiment]
In the fourth embodiment, as shown in FIG. 6, a rod-shaped shaft-shaped portion 52 that is coaxial with the main shaft core X is disposed inside a main case 51 as a tubular case in which the reinforcing member Ba has a tubular shape. Configured. When the vehicle body A is provided in the second mounting form, the cylindrical portion 51a at the end of the main case 51 is inserted into the through hole of the plate portion 3a of the side bracket 3, and the screw portion on the outer surface of the cylindrical portion 51a is inserted. The main case 51 is fixed to the side bracket 3 by screwing the connecting nut 53.

  The shaft-shaped portion 52 forms a large-diameter region 52a at the center position in the direction along the main axis X, and the one shaft-shaped portion 52 is inserted into the tubular portion 51a of the main case 51. A plurality of displacement restraining springs 22 as urging members are arranged inside the main case 51 at the inner end side of the cylindrical portion 51a and at a position outside the outer end of the cylindrical portion 51a and fitted on the shaft-like portion 52. In addition, two displacement suppression mechanisms Bb are configured by screwing a plurality of pressure adjusting nuts 54 into threaded portions on the outer end of the shaft-like portion 52 inserted through these displacement suppression springs 22. In the fourth embodiment, the main case 51 and the shaft-like portion 52 are the displacement members.

  When the main case 51 and the shaft-like portion 52 are displaced in a direction extending in the direction along the main axis X, the displacement suppression mechanism Bb has a plurality of displacement suppressions outside the main case 51 by the pressure from the connecting nut 53. The spring 22 is compressed. On the contrary, when the main case 51 and the shaft-like portion 52 are displaced in the direction of compression in the direction along the main axis X, the main cylindrical body 41 is caused by the pressure from the large-diameter region 52a of the shaft-like portion 52. The displacement suppression spring 22 inside is compressed.

  On the inner surface of the main case 51, a tapered inner surface 51s is formed as a friction surface having a smaller diameter as the displacement suppression spring 22 is closer to the arrangement direction (one end side), and the tapered outer periphery is in contact with the tapered inner surface 51s. A chuck member 55 having a surface is fitted on the large-diameter region 52 a of the shaft-like portion 52. Further, a compression coil spring 56 is provided as an urging mechanism for applying an urging force in a direction in which the outer peripheral surface of the chuck member 55 is pressed against the tapered inner surface 51s, and the main case 51 is adjusted so as to adjust the urging force of the compression coil spring 56. An adjustment ring 57 that is screwed to the end portion and a holding nut 58 that fixes the adjustment ring 57 are screwed to the outer periphery of the adjustment ring 57.

  The taper-shaped inner surface 51s, the chuck member 55, the shaft-shaped portion 52, and the compression coil spring 56 are provided, and a braking force acts on the relative displacement of the main case 51 and the shaft-shaped portion 52 in the direction along the main axis X. The operation damping mechanism Bc is configured by the functional portion to be

  As shown in FIG. 7, the chuck member 55 is formed with a slit 55 s in a posture along the spindle axis X so that the outer diameter can be changed by an urging force acting from the compression coil spring 56. Further, the vehicle body reinforcing unit B employs a configuration in which the extending end of the shaft-like portion 52 is connected to the cross member 2 or the center bracket 4.

[Operating form]
In the vehicle body reinforcement unit B according to the fourth embodiment, two external forces are applied to the vehicle body reinforcement unit B in any direction between the direction of compression along the main axis X and the direction of separation. Since one displacement suppression spring 22 of the displacement suppression mechanism Bb is compressed, the urging force of the displacement suppression spring 22 accompanying this compression acts in a direction against the displacement to suppress the displacement.

  In addition, even when an external force is applied in either the direction in which the vehicle body reinforcing unit B is compressed in the direction along the main axis X or the direction in which the body reinforcement unit B is separated, the chuck member 55 is connected to the compression coil spring along with the displacement of the shaft-like portion 52. The contact surface pressure is generated between the outer diameter surface of the large diameter region 52 a and the inner diameter surface 55 f of the chuck member 55 by being pressed against the tapered inner surface 51 s of the main case 51 by 56. Therefore, the relative moving force between the main case 51 and the shaft-like portion 52 is frictionally attenuated to suppress rapid displacement, and the amplitude is reduced when vibration is involved. This braking force (damping force) can be changed by adjusting the biasing force that acts on the chuck member 55 from the compression coil spring 56 by operating the adjustment ring 57.

[Fifth Embodiment]
In the fifth embodiment, as shown in FIG. 8, a spring receiving member 60 fixed by a retaining ring (snap ring) 59 is provided instead of the adjustment ring 57 of the configuration of the vehicle body reinforcement unit B of the fourth embodiment. The point is different.

  With such a configuration, an operation mode similar to that of the fourth embodiment is exhibited. In particular, in the fifth embodiment, the braking force (damping force) acting from the actuation damping mechanism Bc is constant, but the adjustment ring 57 is not required, so that the configuration is simplified and the cost is reduced.

[Sixth Embodiment]
The sixth embodiment differs from the vehicle body reinforcement unit B of the fourth embodiment in the configuration of the operation damping mechanism Bc. That is, as shown in FIG. 9, a cylindrical resin-made color member 65 that is displaced along the main axis X integrally with the large-diameter region 52 a of the shaft-like portion 52 is provided. Further, the cylindrical portion of the main case 51 has a pressing member 24 fitted into a hole formed by a coaxial core and an orthogonal axis Y in a posture orthogonal to the main axis X, and the pressing member 24 is a color member. A spring body 25 made of a disc spring for applying an urging force that presses against the outer peripheral surface of 65, an adjustment bolt 66 screwed into the cylindrical portion of the main case 51 so as to adjust the urging force of the spring 25 body, and this adjustment An adjustment maintaining nut 67 is provided that is screwed into a threaded portion on the outer periphery of the bolt 66 to maintain the adjustment state, and these constitute an operation damping mechanism Bc.

  The actuation damping mechanism Bc of the sixth embodiment differs from the actuation damping mechanism Bc of the first embodiment and the second embodiment in that the biasing force acting on the pressing member 24 from the spring body 25 by the operation of the adjustment bolt 66 is applied. A configuration is adopted in which the braking force (damping force) between the collar member 65 and the large-diameter region 52a of the shaft-like portion 52 can be adjusted and adjusted. In addition, the operation damping mechanism Bc can be adjusted by changing the number of disc springs constituting the spring body 25 by removing the adjusting bolt 66, and the collar member 65 is changed to one having a different friction coefficient. This makes it possible to obtain the required braking force.

  According to the sixth embodiment, the displacement suppression mechanism Bb functions in the same manner as in the fourth embodiment, but the operation damping mechanism Bc functions in the same manner as in the first embodiment.

[Seventh Embodiment]
As shown in FIG. 10, the seventh embodiment has a configuration that is partially similar to the fourth embodiment. In other words, the shaft-like portion 52 is accommodated in the main case 51 so as to be relatively movable along the main shaft core X by being coaxial with the main shaft core X. A chuck member 55 is provided in the large-diameter region 52 a of the shaft-like portion 52, and the outer peripheral surface of the chuck member 55 is configured to contact the tapered inner surface 51 s of the main case 51.

  In the seventh embodiment, the displacement suppressing spring 22 formed of a compression coil spring as a biasing member is provided at a position where the large-diameter region 52a of the shaft-shaped portion 52 is sandwiched from the direction along the main axis X, and the shaft-shaped portion Only one end of 52 is extended from the main case 51 to the outside, and the extended end is connected to the side member 1, the side bracket 3, or the like with a nut or the like.

  Further, an intermediate support 68 having a function of a spring receiver of the displacement suppression spring 22 disposed on the open side of the main case 51 and a function of a spring receiver of the compression coil spring 56 that applies a biasing force to the chuck member 55 is mainly used. The case 51 is screwed together. Further, a rod-shaped portion 68a is formed to project from the outer surface side of the intermediate support 68, and the rod-shaped portion 68a is connected to the other side member 1, the center bracket 4, and the like.

  In the seventh embodiment, since the displacement suppression spring 22 is composed of a compression coil spring, it is possible to operate with a large operation stroke, and the pair of displacement suppression springs 22 can be adjusted by adjusting the screwing depth by the intermediate support 68. The biasing force acting on the chuck member 55 from the compression coil spring 56 can be adjusted simultaneously.

[Eighth Embodiment]
In addition to the configuration common to the sixth embodiment, the seventh embodiment has a configuration including an urging force release portion Bd that releases the urging force that acts from the displacement suppression mechanism Bb. That is, as shown in FIG. 11, the sub unit Q (the first displacement member of the first displacement member) is provided with the biasing force release portion Bd at a position continuous with the extending end of the shaft-like portion 52 of the main unit P (an example of the second displacement member). An example) is arranged.

  The main unit P has the same configuration as the vehicle body reinforcing unit B of the sixth embodiment. Further, the sub unit Q is configured by arranging a first reinforcing body 71, a second reinforcing body 72, and a third reinforcing body 73 along the main axis X. In the eighth embodiment, the main unit P and the sub unit Q constitute a vehicle body reinforcing unit B. In particular, the first reinforcing body 71, the second reinforcing body 72, and the third reinforcing body 73 of the sub unit Q constitute a reinforcing member Ba.

  The first reinforcing body 71 is formed in a cylindrical shape in which one side is tapered and the other side is opened, and a female screw region 71a is formed on the inner periphery of the cylindrical portion. The second reinforcing body 72 is formed with a male screw region 72a that is screwed into the female screw region 71a of the first reinforcing body 71 at one end, and these are screwed together.

  Further, the second reinforcing body 72 is formed in a cylindrical shape having a female threaded portion on the inner periphery of the other end, and the female threaded portion is screwed into a male threaded portion formed on the outer periphery of the third reinforcing body 73. And an adjustment amount fixing nut 74 that is screwed into the male screw portion. At the outer end of the third reinforcing body 73, a rod 73a for connecting to the side member 1 or the like is projected. With this configuration, the second reinforcing body 72 and the third reinforcing body 73 are relatively rotated about the main shaft core X, so that their lengths can be adjusted, and the adjustment amount fixing nut 74 can be adjusted. Fixing is possible.

  Further, by relatively rotating the first reinforcing body 71 and the second reinforcing body 72 around the main axis X, they are relatively displaced in the direction along the main axis X, and the first reinforcing body 71 A state in which the clamp member 75 provided inside is connected to the shaft-like portion 52 and a state in which the connection is released are created. The switching configuration in this state functions as an urging force release unit Bd that releases the urging force acting from the displacement suppression mechanism Bb.

  On the tapered side of the first reinforcing body 71, as shown in FIGS. 11 to 13, a friction surface 71s having a tapered inner surface having a smaller diameter on the outer end side is formed on the inner surface, and the friction surface is formed on the inner surface of the clamp member 55. 55f is formed. A plurality of clamp members 75 having an inclined surface in contact with the friction surface 71 s inside the first reinforcing body 71, rubber, resin, etc. disposed in the middle in the circumferential direction of the plurality of clamp members 75 A plurality of intermediate members 76 made of a flexible material and a ring-shaped spacer 77 that abuts on the plurality of clamp members 75 are provided. The plurality of clamp members 75, the plurality of intermediate members 76, and the spacer 77 function as the urging force release portion Bd.

[Operating form]
In the vehicle body reinforcement unit B of the eighth embodiment, the displacement suppression mechanism Bb of the main unit P exerts an urging force in a direction against the displacement, and the operation damping mechanism Bc exhibits a function of attenuating relative movement.

  Then, the first reinforcing body 71 and the second reinforcing body 72 are rotated relative to each other about the main axis X, and the directions in which they approach each other by the function of the female screw area 71a and the male screw area 72a (the main axis X). In the direction of contraction along the edge), the end of the second reinforcing body 72 comes into contact with the spacer 77 to bring the plurality of clamp members 75 into contact with the friction surface 71s of the first reinforcing body 71. In this contact state, since the friction surfaces 75f of the plurality of clamp members 75 are crimped to the outer periphery of the shaft-shaped portion 52, the first reinforcing body 71, the clamp member 75, and the shaft-shaped portion 52 are guided by the friction surface 71s. As a result, the displacement force transmitted to the reinforcing member Ba is transmitted to the displacement suppression mechanism Bb of the main unit P, and a force against the displacement can be applied.

  Contrary to this, the first reinforcing body 71 and the second reinforcing body 72 are rotated relative to each other about the main axis X, and the direction in which they are separated by the function of the female screw area 71a and the male screw area 72a ( When operated in the direction extending along the spindle axis X), the pressing force acting on the plurality of clamp members 75 from the spacer 77 is released. In this state, since the plurality of clamp members 75 are separated from the outer periphery of the shaft-like portion 52 by the elastic force (repulsive force) from the intermediate member 76, the first reinforcing body 71 is separated from the shaft-like portion 52. The displacement force transmitted to the reinforcing member Ba is not transmitted to the displacement suppression mechanism Bb.

  As described above, in the eighth embodiment, the displacement force acting from the side member 1 or the like is transmitted to the displacement suppression mechanism Bb so that the displacement is suppressed well and the operation damping mechanism Bc is well attenuated. Produce in a state to put out. In addition, it is possible to create a state in which the urging force release portion Bd does not transmit a displacement force to the displacement suppression mechanism Bb.

[Another embodiment]
The present invention may be configured as follows in addition to the embodiment described above.

(A) The operation damping mechanism Bc having the friction member 24 can be configured to include the friction member 24 with respect to the other displacement member when the outer surface of the one displacement member is a friction target surface. . Compared with the configuration of FIG. 3, the inner periphery of the slide holder 21 of FIG. 3 may be a friction surface, and the inner cylinder 12 may be provided with a friction member 24 and a spring body 25 (biasing body). good. In such a configuration, a resin film may be formed on the surface to be rubbed.
(B)
In the vehicle body reinforcement unit B of the first embodiment, the first engagement rod 15 and the second engagement rod are made to the left and right side members 1 and the like. It may be connected and fixed to the member 1 or the like.

(C) For example, a reinforcing member Ba is formed by slidably including a large-diameter cylindrical body as a pair of displacement members and a small-diameter cylindrical body fitted therein, and the inner circumference of the large-diameter cylindrical body The operation damping mechanism Bc may be configured to obtain a braking force by sliding the outer periphery of the small-diameter cylindrical body with moderate friction. When the operation damping mechanism Bc is configured in this way, the sliding contact surface that obtains friction may be coated with resin, or a pressure contact state may be positively created using a spring plate.

  The present invention can be used for a reinforcing member disposed between a pair of frame portions of a vehicle body.

1 Frame (side member)
2 Frame part (cross member)
12 Displacement member, internal fitting (inner cylinder)
21 Displacement member, cylindrical part (slide holder)
42 Displacement member and shaft (shaft)
25 Biasing body (spring body)
36 Displacement member and cylindrical part (slide support)
41 Displacement member and cylindrical body (main cylinder)
42 Displacement member and shaft state (shaft body)
51 Cylindrical case (main case)
51s Friction surface (tapered inner surface)
52 Shaft-shaped portion 55 Chuck member 56 Biasing mechanism (compression coil spring)
A Body Ba Reinforcement member Bb Displacement suppression mechanism Bc Damping mechanism (operation damping mechanism)
X axis (main axis)

Claims (5)

  The reinforcing member disposed between the pair of frame portions of the vehicle body has a pair of displacement members that are relatively displaced in accordance with the relative displacement of the pair of frame portions, and applies a braking force to the relative operation of the pair of displacement members. A vehicle body reinforcement unit having a damping mechanism to act.   The damping mechanism includes a cylindrical portion formed of an axial core and a coaxial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and the axial core and the coaxial core as the other of the pair of displacement members. An inner fitting portion that fits into the cylindrical portion; a friction member that contacts the inner periphery of the cylindrical portion or the outer periphery of the inner fitting portion; and a biasing body that biases the friction member in the contact direction. The vehicle body reinforcing unit according to claim 1.   The damping mechanism includes a cylindrical body formed of an axial core and a coaxial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and the axial core and the coaxial core as the other of the pair of displacement members. 2. A shaft-like body fitted into the tubular body, and a flexible damping tubular body that is in close contact with the inner periphery of the tubular body and the outer periphery of the shaft-like body and is elastically deformable. The vehicle body reinforcement unit described.   A cylindrical case in which the damping mechanism is a cylindrical shape that becomes a coaxial core and a coaxial core along the longitudinal direction of the reinforcing member as one of the pair of displacement members, and a friction surface that has a smaller diameter on one end side on the inner periphery; As the other of the pair of displacement members, a shaft-shaped portion fitted into the cylindrical case with a coaxial core and a coaxial core, and a friction surface of the cylindrical case and an outer peripheral surface of the shaft-shaped portion are freely contactable. A chuck member; and a biasing mechanism that applies a biasing force that presses the inner surface of the chuck member against the outer periphery of the shaft-shaped portion in a state where the outer peripheral surface of the chuck member is pressed against the friction surface of the cylindrical case. The vehicle body reinforcing unit according to claim 1.   A displacement suppression mechanism that applies an urging force that resists displacement in at least one of an expansion displacement in a direction in which the relative distance between the pair of frame portions expands and a reduction displacement in a direction in which the relative distance decreases; The vehicle body reinforcing unit according to any one of claims 1 to 4.

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