KR100523697B1 - Damper and pedal parking brake using it - Google Patents

Abstract

The damper 1 is a space for accommodating the viscous body 5 between the rotary body 4 having the attachment portion 3 for freely attaching the rotation to the vehicle body 2 and the rotating body 4 ( 6) a non-linear rotational amount of the rotational body 7 and the rotational body 4 around the attachment portion 3, the rotational body of which rotation is freely set relative to the rotational body 4, and the rotational body 7 And the viscous resistance of the viscous body 5 caused by the rotation of the rotor 4 and the rotor 7 relative to each other in the rotation of the rotor 4 around the attachment site 3. The rotation transmission means 8 which changes the resistance with respect to rotation of the rotating body 4 centering on the attachment part 3 which originates is provided.

Description

Damper and Pedal Type Parking Brake

The present invention is, for example, a damper suitable for imparting a predetermined resistance to rotation of a member (rotational damping object) to which a pedal arm of a pedal-type parking brake, a large rotating window, a reclining seat such as an automobile, etc. rotate. A pedal type parking brake using a damper.

As a damper of this kind, for example, it has a housing and a relative rotating body which is freely set with respect to the housing and which generates viscous shear resistance in a viscous body enclosed in the housing by relative rotation with respect to the housing. A conventional type of damper has been proposed. However, in such a damper of the conventional type, when the relative rotational speed between the housing and the relative rotating body is the same during operation, either of the rotating positions of the relative rotating body with respect to the housing. Also, since the resistance generated is the same, for example, when the pedal-type parking brake is used to smoothly return the pedal arm to the initial rotational position, the resistance force immediately after release of the pedal arm (unlocking) is used. When designed as sufficient, resistance in the vicinity of the pedal arm pivoting back to the initial pivot position is necessary. As described above, the return time to the initial rotational position of the pedal arm is delayed, and in some cases, such as a failure to return to the normal position occurs, whereby the pedal arm is returned to the initial rotational position. If the resistance is designed to be low and the return time to the initial rotational position of the pedal arm is desired, the resistance force immediately after releasing the pedal arm is not sufficient, and the pedal arm collides strongly with the stopper to the initial rotational position. There is a risk of damage to the pedal arm and stopper due to the impact sound and impact.

Therefore, the present applicant can set the return rotation speed and the return time to a desired time for the rotating member in Japanese Patent Application Laid-Open No. 6-204372 (Japanese Patent Laid-Open No. 8-49744). A damper and a pedal-type parking brake using the same have been proposed, which can avoid collisions with a stopper in Esau, thereby eliminating the risk of damage due to impact sound and impact. It has been found that the damper according to this proposal can solve the above problems, achieve the initial purpose sufficiently, and exhibit very good characteristics.

The present invention is an improvement of the damper and the pedal-type parking brake proposed in Japanese Patent Application No. 6-204372, and the object thereof is to provide a pedal arm of a pedal-type parking brake, a large revolving window, a reclining seat for an automobile, and the like. An object of the present invention is to provide a damper which is more preferable for giving a predetermined resistance to the rotating member.

In addition, another object of the present invention is to set the return rotation speed and the return time to the desired speed and time with respect to the rotating member, and to avoid collisions such as a stopper at the initial rotation position, and to prevent the impact sound and the impact. It is an object of the present invention to provide a damper that can eliminate the risk of damage due to damage.

Still another object of the present invention is to provide a damper and a pedal parking brake which can further reduce the damper and pedal parking brake of the above proposal.

The damper which comprises this invention forms the space which accommodates a viscous body between a 1st relative rotational body and this 1st relative rotational body, and the 2nd by which rotation is relatively freely arrange | positioned with respect to a 1st relative rotational body. And a rotational transmission means for transmitting rotation of the rotational damping object to one of the first and second relative rotational bodies, and the rotational transmission means freely moves relative to the guidance path. A guide engagement means having a customized engagement member, at least a part of the guideway being curved, and rotational transmission of the rotation damping object to one of the first and second relative rotational weights The fitting member is to be carried out through relative guide movement.

In the damper of the present invention, the first relative rotating body has an attachment portion for fixedly or rotatably attaching to a support for rotatably supporting a rotation damping object. In this case, the guide path is formed on one of the second relative rotating body side and the rotation damping object or support side, and the engaging member is formed on the other side of the second relative rotating body side and the damping object or support side, In the case where the rotation transmission means is provided with an arm fixed at one end to the second relative rotating body, and the guide path is formed at the second relative rotating body and the engaging member is formed at the damping object side or the support side, respectively, When the guide path is formed on the arm, the guide path is formed on the rotation damping object side or the support side, and the engaging member is formed on the second relative rotating body, respectively, the engaging member may be formed on the arm.

In the above description, the guide path may be configured with a protrusion or the like connected to the fitting groove or the rail, but is preferably configured with the fitting groove.

The damper of the present invention further includes a first relative rotational body having an attachment portion for freely attaching rotation to a support, and a space for accommodating viscous bodies between the first relative rotational body and the first relative rotational structure. A second relative rotating body freely rotated relative to the whole, and a non-linear transmission of rotation of the first relative rotating body about the attachment site to the second relative rotating body, 1 With respect to the rotation of the first relative rotational body, the rotation of the first relative rotational body about the attachment portion caused by the viscous resistance of the viscous body generated by the rotation of the first and second relative rotational bodies relative to each other. Rotational transmission means for varying the resistance of the, the rotational transmission means is the connection relative to the support relative to the second relative rotational body is relatively free to move and the rotation is freely connected Means, wherein the distance from the center of rotation of the first relative rotor to the support to the center of rotation of the connecting means relative to the support is equal to the first relative rotor at the center of rotation of the first relative rotor relative to the support. The center of rotation of the first relative rotor relative to the support, the center of rotation of the connecting means relative to the support and the center of rotation of the second relative rotor relative to the first relative rotor so as to be longer than the distance to the center of rotation of the second relative rotor. It is done by placing it.

The damper of the present invention also includes a first relative rotating body having an attachment portion for freely attaching rotation to a support, and a space for accommodating a viscous body between the first relative rotating body and the first relative rotating body. The second relative rotating body freely rotated in its entirety and the non-linear transmission of the rotation of the first relative rotating body about the attachment portion to the second relative rotating body, 1 With respect to the rotation of the first relative rotor about the attachment site caused by the viscous resistance of the viscous body caused by the rotation of the first relative rotor and the second relative rotor relative to each other in the rotation of the first relative rotor. Rotational transmission means for changing the resistance of the, the rotational transmission means is guided to fit the guide so as to be relatively free to move and the rotation relative to the support Provided with a means, guiding the engaging means is a connecting means with respect to the support is configured to guide the relative movement in a curved form.

In the damper, the rotation transmission means is configured to change the resistance force according to the rotation angle between the first relative rotational body and the second relative rotational body, or the rotation of the second relative rotational body with respect to the first relative rotational body. The torque may be changed by changing the torque radius.

Further, in the damper, the first relative rotational body is freely rotatable to the support through the attachment portion of the first relative rotational body, and the connecting means includes an arm fixed to the second relative rotational body, the support and the arm to each other. It is provided with a guide engaging means for engaging the guide so as to be relatively free to move and rotate.

As a preferred example of the guide fitting means, a fitting groove formed in one of the support and the arm, a fitting member in which the movement is fitted freely in the fitting groove, and the support member can be freely rotated, and the other of the support and the arm is supported. The shaft body provided in the side is provided. Another preferred guide fitting means includes a fitting groove formed on one of the support and the arm, a fitting member to which the movement is fitted freely by the fitting groove, and the fitting member is fixed and freely rotated on the other of the support and the arm. The shaft is provided, or has a fitting groove formed in one of the support and the arm, and is fitted into the fitting groove, and has a cylindrical body or cylinder provided on the other of the support and the arm.

In any of the above-described fitting grooves, the fitting groove is curved, preferably connected in an arc shape, and curved so as to be convex or concave toward the rotation center of the first relative rotating body, and preferably in an arc shape. Further, the distance from the center of rotation of the first relative rotating body to the support to the center of rotation of the second connecting means relative to the first connecting means is equal to the first relative rotating body at the center of rotation of the first relative rotating body relative to the support. In the damper of the present invention, which is longer than the distance to the center of rotation of the second relative rotating body, the fitting groove may be straight in a straight line. In addition, any of the above-described fastening members, as described above, is made of a fastening member or a cylindrical body or a cylindrical body with a rotation freely attached to the shaft, preferably a fastening member with a rotation freely attached to the shaft. .

In addition, either of the dampers of the present invention is preferably configured to generate a viscous shear resistance in the viscous body accommodated in the space in rotation relative to each other between the first and second relative rotating bodies.

In the pedal-type parking brake of the present invention, which uses the damper of the pedal arm as the rotation damping object, the pedal arm is freely attached to the vehicle body as the support, and the guideway is moved from the stepped position of the pedal arm to the initial rotation position. At least in the vicinity of the initial rotational position in the rotation of the relative rotational amount of the second relative rotational body relative to the first relative rotational body per unit rotational amount of the pedal arm is formed so as to gradually increase, here, as a preferred example, the pedal arm Is attached to the vehicle body at the same position as the attachment portion of the first relative rotating body to the support.

Further, the pedal-type parking brake of the present invention using the damper described above is freely attached to a vehicle body as a support such that the first relative rotating body is rotated around the attachment portion of the first relative rotating body by rotation. In addition, a pedal arm connected to the first relative rotating body is provided. In this pedal-type parking brake, the pedal arm is rotatably attached to the vehicle body at the same position as the attachment portion of the first relative rotating body to the support.

According to the present invention, the rotation transmission means includes a guide passage and guide engaging means having a fastening member relatively freely engaged with the guide passage, wherein at least a part of the guide passage is curved, Since the rotational transmission of the rotation attenuation object to either one of the second relative rotating bodies is performed so that the engaging member along the guide path is carried out by relative guide movement, or the first rotation transmission means centers on the attachment site. The rotation of the relative rotating body is transmitted nonlinearly to the second relative rotating body, and at the same time, the rotation of the first relative rotating body with respect to the attachment site causes the mutual relationship between the first relative rotating body and the second relative rotating body. Since the resistance to the rotation of the first relative rotating body about the attachment site caused by the viscous resistance of the viscous body caused by the relative rotation is changed, for example, Pedal arm of lunar parking brake, large revolving window, reclining seat of automobile, etc. can give a certain resistance to the rotation of the rotational member, and return rotation speed and return time required for the rotational member. In addition to this, the damper can be avoided from the initial rotational position such as a stopper and the like, and the risk of damage due to the impact sound and impact can be eliminated. A pedaled parking brake can be provided.

Embodiment

Next, this invention and its embodiment are demonstrated with reference to the preferable Example shown in drawing. In addition, this invention is not limited to these Examples at all.

In Figures 1 and 2, the damper 1 of this example comprises a relative rotating body 4 having an attachment part 3 for freely attaching rotation to the vehicle body 2 (see Figs. 3 and 4) as a support. And the relative rotating body 7 and the attachment portion 3, which form a space 6 for receiving the viscous body 5 between the relative rotating body 4 and the rotation is freely set relative to the relative rotating body 4. In the non-linear transmission of the rotation of the relative rotating body 4 with respect to the relative rotating body 7, and the rotation of the relative rotating body 4 around the attachment portion 3, Resistance to rotation of the relative rotating body 4 around the attachment site 3 caused by the viscous resistance of the viscous body 5 generated by rotation of the whole 4 and the relative rotating body 7 relative to each other. It is provided with a rotation transfer means 8 for changing the. In this example, the viscous shear resistance is generated in the viscous body 5 by the rotation of the relative rotor 4 and the relative rotor 7 relative to each other.

The vehicle body 2 includes a main body 111, a bracket 110 fixed to the main body 111 by welding or the like, and a connecting mechanism 41, and the connecting mechanism 41 includes a cylindrical portion 52. An arm 53 formed integrally with the cylindrical portion 52, a hexagonal collar 54 fixedly fitted into the cylindrical portion 52, and a locking portion 55 formed integrally with the cylindrical portion 52; ). The coupling mechanism 41 is inserted into the hole (not shown) formed in the bracket 110 so that the engaging portion 55 is positioned with respect to the main body 111 and does not rotate with respect to the main body 111.

The relative rotating body 4 includes a housing body 11 divided into one side, a plurality of annular protrusions 12 formed on an inner surface thereof, and a cover body 13 divided into the other side, a housing body 11 and a cover body. And a moving fitting member 14 disposed between the housing body 11 and the cover body 13 so that the housing body 11 and the cover body 13 fit snugly at the fitting surface so as not to be separated from each other by the rivet 16. It is fixed and the sealing ring 15 which prevents the leak of the viscous body 5 is arrange | positioned between the fitting surfaces.

The housing body 11 has a through hole 21 formed in the attachment portion 3, a through hole 22 at which one end of the movable fitting member 14 is disposed, and a cylindrical shape protruding toward the cover body 13. The shaft part 23 is provided. In addition to the plurality of annular projections 12, the lid 13 has the same shape as the through hole 21 and is formed in the same center, the through hole 25, the center through hole 26, and the movable fitting member. The through hole 27 in which the other end side of 14 is arrange | positioned is provided. The movable fitting member 14 is disposed in the through holes 22 and 27 by slidingly inserted into the housing body 11 and the lid body 13, and the pedal arm 85 of the pedal-type parking brake 81 described later. At the time of mounting the damper 1 on the side wall of the damper 1, the movement of the connecting pin 87 into the mounting hole of the pedal arm 85 can be performed slightly.

The relative rotating body 4 is supported by the cylindrical part 52 which penetrates the through-holes 21 and 25 so that rotation is free in the C and D direction about the center 51 of the cylindrical part 52. It is.

The relative rotating body 7 is formed integrally with a disk-shaped main body 32 having a shaft portion 31 and one side of the main body 32, and is provided on the annular projection 12 of the lid 13. In the concave part 34 formed in the axial part 31, the annular protrusion 33 arrange | positioned alternately is provided in the axial part 23 of the housing main body 11 around the center 35 of the A and It is fitted to rotate freely in the B direction. The viscous body 5 does not leak between the annular stepped portion 36 of the shaft 23 and the annular protrusion 38 of the cylindrical inner wall 37 of the lid 13. The seal ring 39 is installed. The protrusion 33 cooperates with the inner circumferential wall 37 of the lid 13, the cylindrical outer circumferential wall 40, and the protrusion 12 to form a space 6 for receiving the viscous body 5.

The rotation transmission means 8 is provided with the connection means 42 which makes the relative rotation body 7 relatively free with respect to the vehicle body 2, and a rotation is freely connected. The connecting means 42 is an arm 60 fixed to the relative rotating body 7 and a guide engaging means for allowing the arm 60 to be relatively freely moved and freely rotated relative to the vehicle body 2 ( 43).

The arm 60 has a cylindrical portion 61, an arm portion 62 formed integrally with the cylindrical portion 61, and a collar 63 fitted into the cylindrical portion 61. It is connected to the shaft part 31 in the cylindrical part 61 by the screw 64 screwed to the shaft part 31 through the 63, and is fixed to the relative rotating body 7. As shown in FIG. In this way, the arm 60 is fixed to the shaft part 31 of the relative rotating body 7 through the cylindrical part 61, the collar 63, and the screw 64 at the one end. The center 35, which is the center of rotation of the relative rotor 7 relative to the relative rotor 4, is the distance L2 from the center 51, which is the center of rotation of the relative rotor 4 relative to the vehicle body 2. It is located in a remote location.

Guide fitting means 43 is a fitting groove 71 is formed in the arm portion 72 to be convex toward the center 51, the fitting groove 71, the insertion groove can be freely inserted into the fitting groove 71 The member 72 and the fitting member 72 are rotatably supported in the E and F directions at the center 73 thereof, and have a shaft 74 fixed to the arm 53. The center 73, which is the center of rotation of the arm portion 62 of the connecting means 42 with respect to the arm 53 of the vehicle body 2, is a relative rotating body 4 with respect to the cylindrical portion 52 of the vehicle body 2. It is arranged at a position separated by a distance L1 (wherein L1> L2) from the center 51 which is the rotational center of.

In addition, instead of this example, the fitting groove 71 is formed in the arm 53, and the fitting member 72 fixes the shaft body 74 in which rotation is freely supported to the arm part 62, and guides the engagement. The means 43 may be configured, and in the above, the guide fitting means 43 is configured by using the fitting member 72 disposed in the fitting groove 71 so as to make surface contact to increase the mechanical strength. Instead of the fitting member 72 and the shaft body 74, the cylindrical body or the cylinder body is freely rotated in the fitting groove 71 and the sliding movement is freely fitted in the fitting groove 71 so as to make a linear contact with the fitting groove 71. The guide engaging means 43 may be formed on the 53 or the arm portion 62. In this case, the cylindrical body or the cylindrical body may be freely attached or fixed to the arm 53 or the arm part 62. However, in order to ensure smooth movement and rotation, the rotating body may be freely attached. In addition, the fitting groove 71 bent in an arc shape is illustrated as a fitting groove that is bent and connected. However, in the present example, the fitting groove is straight and straight, or a parabolic other fitting groove. It may be sufficient, and may be curved so that it may become concave toward the center 51, and may be continued.

The damper 1 is applied to the pedal parking brake 81, for example, as shown in Figs. Here, the coupling mechanism 41 is fitted to the shaft 83 fixed to the main body 111 at one end through the through-hole 82, and fixed so as not to rotate relative to the main body 111, and the pedal-type parking brake. As for the pedal arm 85 as the rotation damping object of 81, in one side, the relative rotating body 4 in the attachment part 3 bears the cylindrical part 52 with respect to the said cylindrical part 52, and Similarly, rotation is freely supported on the vehicle body 2 in the C and D directions through the shaft 83 having the same position where the rotation is freely attached in the D direction, and the through-hole 84 of the movable fitting member 14 on the other side. The connecting pin 87 is arranged to penetrate the relative rotating body 4 through the connecting pins 87 so as to rotate the relative rotating body 4 as the C and D directions rotate.

The pedal arm 85 is connected to the parking brake mechanism at one end via a brake cable connected to the pedal arm, and the spring of the parking brake mechanism is rotated to return to the initial pedal rotational position (position shown in FIG. 3). Force is exerted by the elastic means 91 including a) and is in contact with the stopper 92 at the pedal initial rotation position. In this example, the intersection angle α between the line 95 connecting the center 51 and the center 35 and the line 96 connecting the center 51 and the center 73 is 30 ° in the pedal initial rotation position. The damper 1 and the pedal arm 85 are respectively attached so as to be 0 degrees in the maximum stepped position (the position shown in Fig. 4).

In the pedal-type parking brake 81 with the damper 1 attached, the pedal 97 is stepped down so that the pedal arm 85 rotates in the D direction around the center 51, and with this, a relative rotating body ( 4) is also rotated in the D direction. By rotation of the relative rotating body 4, the arm part 62 engaging with the arm 53 via the guide engaging means 43 is rotated in the A direction around the center 35. During this rotation in the A direction, the fitting member 72 in which the rotation is freely attached to the arm 53 via the shaft 74 is guided to the fitting groove 71 to rotate in the E direction around the center 73. It is moved with respect to the arm part 62. When the arm portion 62 is rotated in the A direction, the relative rotating body 7 fixed to the arm portion 62 is rotated in the A direction with respect to the relative rotating body 4, so that the pedal arm 85 is shown in FIG. As shown in Fig. 4, it is brought to the maximum stepped position, and the maximum brake is applied.

When the step on the pedal 97 and the locking of the parking brake are released at the maximum stepped position as shown in Fig. 4, the pedal arm 85 is rotated in the opposite direction to the above by the elastic means 91. Similarly, a viscous shear resistance is generated in the viscous body 5, and the viscous shear resistance gives a resistance to the rotation of the pedal arm 85 while the pedal arm 85 returns to the initial rotational position as shown in FIG. , The rotation is stopped by contacting the stopper 92.

The line 99 connecting the center 35 and the center 73, which is the rotational amount of the relative rotating body 7 with respect to the relative rotating body 4, to the rotational characteristic of the rotating transmission means 8 of the present example. In view of the relationship between the intersection angle β between the line 95 and the intersection angle α, the distance L1, the distance L2, and the radius of curvature r of the fitting groove 71, which are the rotation amounts of the relative rotor 4, the equation ( It becomes like 1).

The rotation transfer means 8 of this example is apparent when the equation (1) is interpreted, and the rotation transfer means 8 transmits the rotation of the relative rotation body 4 nonlinearly. When the radius of curvature r is infinity, that is, when the fitting groove 71 is a straight line, equation (1) becomes as shown in equation (2).

As an example, when L1 = 75.85 mm and L2 = 54.25 mm, and the fitting groove 71 is a straight line, the crossing angle α, the crossing angle β, θ, the torque radius ratio L1 / L3, the torque ratio T1 / T3 and the pedal arm Table 1 shows the relationship between the pedal arm angle γ ° and the initial rotational position of (85) at 0 °. Θ is the intersection angle of the line 100 orthogonal to the line 96 and the line 101 orthogonal to the line 99, L3 is the distance between the center 35 and the center 73, the relative rotation ( The torque radius for 7), T1 is the torque reaction acting on the pedal arm 85, T3 is the rotational torque generated by the damper 1, θ, torque radius ratio L1 / L3 and torque ratio T1 / T3 between The relationship of (T1 / T3) = cosθ × (L1 / L3) holds.

Table 1

As apparent from Table 1, even when the fitting groove 71 is made straight, in the damper 1, the pedal initial rotational position from the pedal maximum stepped positions (α = 0 °, β = 0 °, γ = 30 °). In the process of returning to (α = 30 °, β = 73.22 °, γ = 0 °), while the angle α varies from 0 ° to 5 °, the angle β changes to 17.23 °, but α changes from 25 ° to 30 °. While changing to °, β only changes by 7.55 °, so that the rotational speed of the relative rotational body 7 gradually increases with the rotation of the constant rotational body 4 from the pedal maximum stepped position to the pedal initial rotational position. The time is late. This is due to the viscous shear resistance of the viscous body 5 that the rotational resistance of the relative rotor 7 approaches the pedal initial rotation position when the relative rotor 4 is rotated at a constant speed around the center 51. It means smaller as it is, and considering this in relation to the spring force of the return elastic means 91, the rotational resistance of the size corresponding to the magnitude of the spring force of the elastic means 91 is the relative rotating body (4) It is obtained with respect to.

Also, as can be seen from the torque ratio T1 / T3 of Table 1, even when the fitting groove 71 is straight, the damper 1 has a pedal maximum stepped position (α = 0 °, β = 0 °, In the process of returning from γ = 30 ° to the pedal initial rotation position (α = 30 °, β = 73.22 °, γ = 0 °), the resistance force (torque reaction force) T1 to the pedal arm 85 gradually decreases. That is, in the damper 1, the rotation transfer means 8 is around the center 35 due to the viscous resistance of the viscous body 5 caused by the relative rotation of the relative rotating body 4 and the relative rotating body 7 with each other. The resistance force T3 with respect to the rotation of the relative rotating body 7 in E is changed according to the rotation angles α and β of the relative rotating body 4 and the relative rotating body 7. In this example, the resistance force T3 is changed at the same time, and the resistance T3 is changed by changing the rotation torque radius L3 of the relative rotation body 7 with respect to the relative rotation body 4. In this example, it is configured to change gradually. have.

As the pedal arm 85 approaches the pedal initial rotational position, in the pedal-type parking brake 81 with the damper 1, the resistance force (torque) T1 to the pedal arm 85 gradually decreases, the rotation is nonlinear. In conjunction with the viscosity of the viscous body 5 and the spring force of the elastic means 91 together with the normal transmission function, not only the pedal arm 85 can avoid collision with the stopper or the like, but also near the initial rotational position. The pedal arm 85 can be rotated as desired.

The above is the case where the fitting groove 71 is in a straight line. However, as in the embodiment shown in the drawing, when the fitting groove 71 is in the shape of an arc, the pedal maximum stepped position (α = 0 °, γ = 30 °) to the pedal initial rotation position (α = 30 °, γ = 0 °), the crossing angle β, which is the amount of rotation of the relative rotor 7 with respect to the relative rotor 4, can be increased, for example, When the radius of curvature of the circular arc of the dowel groove 71 is 20 mm, from the pedal maximum stepped position (α = 0 °, γ = 30 °) to the pedal initial rotation position (α = 30 °, γ = 0 °) The increase of the crossing angle β, which is the rotation amount of the relative rotating body 7, is 28.84 °. This increases the amount of rotation of the relative rotating body 7 relative to the relative rotating body 4 with respect to the unit rotation amount of the pedal arm 85. In other words, it means that the relative rotating body 7 rotates quickly with respect to the relative rotating body 4 to generate a larger viscous shear resistance. Therefore, even if the shape of the relative rotating body 4, the relative rotating body 7, etc. is made small, the viscous shear resistance of a desired magnitude | size can be generated, and the damper 1 which made the fitting groove 71 the arc shape was carried out. It can be made small in itself. In addition, by setting the radius of curvature of the arc of the fitting groove 71 to various other values, the pedal initial rotation position (α = 30 °, γ = 0 °) from the pedal maximum stepped position (α = 0 °, γ = 30 °). The amount of rotation of the relative rotor 7 relative to the relative rotor 4 can be arbitrarily adjusted. In relation to the spring force and the like of the elastic means 91, the desired rotation speed and return time are desired. You can do

In this connection, the damper described in Japanese Patent Laid-Open No. 8-49744 is obtained so that the maximum torque ratio almost equal to the maximum torque ratio (= 3.512) of the damper 1 when the fitting groove 71 is made straight. In the design, the amount of rotation β of the relative rotor 7 relative to the relative rotor 4 of the damper is about 49.99 °. Therefore, the damper 1 of the present example has the fitting groove 71 in a straight line. In this case, a sufficiently large rotation amount β can be obtained as compared with the damper of Japanese Patent Laid-Open No. 8-49744.

The above is an example of a damper in which the pedal-type parking brake 81 rotates with respect to the vehicle body 2 together with the rotation of the pedal arm 85, but instead it is fixed not to rotate with respect to the vehicle body 2, In addition, the damper which can perform the above operation | movement in rotation of the pedal arm 85 may be sufficient. Examples of such dampers are shown in FIGS. 5 and 6.

5 and 6, the damper 201 of this example is provided between the relative rotating body 204 and the relative rotating body 204 having an attachment portion 203 for fixedly attaching to the vehicle body 202. A space 206 for accommodating the viscous body 205 is formed, and the relative rotating body 207 and the attachment portion 203 which are freely rotated in the A and B directions relative to the relative rotating body 204 are formed. The rotation of the pedal arm 285 centered in the C and D directions is transmitted non-linearly to one of the relative rotating bodies 204 and 207, in this example, to the relative rotating body 207, and at the same time, the attachment portion 203 In rotation in the C and D directions of the pedal arm 285 around the center, the adhesion caused by the viscous resistance of the viscous body 205 caused by the relative rotation of the relative rotating body 204 and the relative rotating body 207 to each other. The rotation transmission means 208 which changes the resistance with respect to rotation of the pedal arm 285 centering on the site | part 203 is provided. Also in this example, viscous shear resistance is generated in the viscous body 205 by the rotation of the relative rotating body 204 and the relative rotating body 207 relative to each other.

The vehicle body 202 includes a main body 311 and a bracket 310 fixed to the main body 311 by welding or the like.

The relative rotating body 204 has a housing body 212 which is one half body having a plurality of annular protrusions 211 formed on one side thereof, and a plurality of annular protrusions 213 formed on an inner surface corresponding to the annular protrusion 211. Is provided with a cover body 214 which is the other half body formed with the housing body 212 and the cover body 214 are fixed so as not to be separated from each other by the rivet 216 is fitted in the alignment surface, A sealing ring 215 is disposed between the fitting surfaces to prevent leakage of the viscous body 5.

The housing body 212 has a plurality of annular projections 211 and an annular projection 211 integrally formed on one side, and at the same time an annular plate having a through hole 221 formed in the center ( 223 and a cylindrical portion formed integrally with the outer rim of the annular plate 223 and serving as an attachment portion 203 of the relative rotating body 204 and defining a hexagonal through hole 224 ( 225). The cover body 214 includes a cup-shaped body 226 in which the plurality of annular protrusions 213 and the annular protrusions 213 are integrally formed, and an shaft portion integrally formed in the center of the inner surface of the body 226. 227 is provided.

The relative rotating body 207 is integrally formed on both sides of the main body 232 having the concave portion 231 and the main body 232, and the annular projections 211 and 213 of the relative rotating body 204 are provided. ) Is provided with annular projections 233 and 234 disposed differently from each other, and a shaft portion 235 integrally formed on one side of the main body 232, and is fitted with a recess 231. The shaft portion 227 of 214 is supported so as to be freely rotated in the A and B directions with respect to the relative rotating body 204. The sealing ring 239 is provided between the circular stepped portion 236 of the main body 232 and the inner rim of the annular plate 223 so that the viscous body 5 does not leak out. The protrusions 233 and 234 cooperate with the annular protrusions 211 and 213 to form a space 206 for accommodating the viscous body 205.

The rotation transmission means 208 has a connecting means 242 for connecting the relative rotating body 7 relative to the pedal arm 285 so as to be relatively free to move and free to rotate. An arm 261 having one end fixed to the shaft portion 235 of the entire assembly 207 and a guide hook for guiding the arm 261 to the pedal arm 285 so that the arm 261 is relatively free to move and free to rotate. Alignment means 243 is provided.

The guide engaging means 243 is bent and connected to the fitting groove 271 as a guide path formed in the arm 261, and the fitting member as the engaging member freely movable relative to the fitting groove 271 ( 272 and a shaft 274 that supports the fitting member 272 so as to be freely rotated in the E and F directions at the center 273, and is fixed to the pedal arm 285 via a bracket 275.

In this example, the fitting groove 271 is connected in an arc shape so as to be convex toward the rotation center 251 of the pedal arm 285 as a whole, A and B of the relative rotating body 207 relative to the relative rotating body 204. In the vicinity of the rotation center 237 in the direction, it may be linearly connected to the arc shape so as to be convex toward the rotation center 251 as it falls there.

Instead of the present example, the fitting groove 271 is formed in the pedal arm 285, and the shaft 274 in which the fitting member 272 is rotatably supported by the arm 261 or the main body 232 is guided. The engagement means 243 may be constituted, and in place of the fitting member 272 and the shaft 274, the fitting groove 271 is freely rotated and the sliding movement is provided so that the fitting groove 271 is in line contact with the fitting groove 271. The guide fitting means 243 may be formed by forming the cylindrical body or the cylinder body which fits freely in the pedal arm 285, the arm 261, or the main body 232. In this case, the cylindrical body or the cylindrical body may be freely attached or fixedly attached to the cylinder, but the rotation may be freely attached to secure the flexible movement and rotation. Further, as the fitting grooves that are curved and connected, the fitting grooves that are bent in an arc shape at least partially as described above may be used.

The damper 201 is applied to the pedal-type parking brake 281 as generally shown in Figs. 7 and 8 as above. Here, the hexagonal collar 283, the collar 284, and the spacers 286 and 287 are attached to the screw shaft 282 formed through the main body 311 and the bracket 310 of the vehicle body 202, and the collar ( A cylindrical portion 225 is fitted to the outer surface of the hexagon of 283 through the through hole 224, and cylindrical bushes 289 and 290 with flanges are fitted to the outer surfaces of the spacers 286 and 287. The pedal arm 285 as a rotation damping object, which is attached, and through the collars 284 and the cylindrical bushes 289 and 290 with a flange, is freely rotatable in the C and D directions around the rotation center 251. The damper 201 is fixed to the vehicle body 202 so that the damper 201 is not rotated in the C and D directions by being screwed to the shaft 282 and mutually engaging the screw shaft 282 and the nut 291.

The pedal arm 285 has a force applied by the elastic means 292 similar to the elastic means 91 so as to return to the pedal initial rotation position, and comes into contact with the stopper 293 at the pedal initial rotation position. In this example, the intersection angle α between the line 295 connecting the center 251 and the center 273 and the line 296 connecting the center 251 and the center 237 is the initial pedal rotational position (FIG. 7). The damper 201 and the pedal arm 285 are attached at 30 ° (γ = 0 °) at the pedal stepped position and at 0 ° (γ = 30 °) at the pedal maximum stepped position (position shown in FIG. 8). It is.

In the pedal-type parking brake 281 attached to the damper 201, the pedal arm 285 is rotated in the D direction around the center 251 by stepping on the pedal 300. Similarly, the shaft 274 is also rotated. It is rotated in the D direction around the center 251. The arm 261 is rotated in the B direction around the center 237 via the fitting member 272 and the fitting groove 271 by the rotation of the shaft 274. During this rotation in the B direction, the fitting member 272 is guided to the fitting groove 271 and rotated about the center 273 in the F direction while being moved relative to the arm 261. Thus, in this example, rotational transmission of the pedal arm 285 to the relative rotating body 207 is performed so that the fitting member 272 with respect to the fitting groove 271 can be performed through relative guide movement.

When the arm 261 rotates in the B direction, the relative rotating body 207 fixed to the arm 261 rotates in the B direction with respect to the relative rotating body 204, so that the pedal arm 285 is shown in FIG. As shown in the maximum stepped position, the maximum brake is applied.

When the parking brake 281 is unlocked at the maximum stepped position as shown in Fig. 8, the pedal arm 285 is rotated in the opposite direction to the above by the elastic means 292. During this rotation, the viscous body 5 is similarly to the above. ), The viscous shear resistance gives resistance to rotation of the pedal arm 285 by the viscous shear resistance, and the pedal arm 285 returns to the initial rotational position as shown in FIG. The rotation is stopped.

Incidentally, since the fitting groove 271 is connected in an arc shape so as to be convex toward the rotation center 251 of the pedal arm 285 as a whole, the damper 201 has a pedal maximum stepped position (α = 0 °, γ = The rotation amount of the relative rotating body 207 gradually with respect to the unit rotation amount of the pedal arm 285 from the rotation of the pedal arm 285 from 30 ° to the pedal initial rotation position (α = 30 °, γ = 0 °). Grows In other words, the relative rotating body 207 gradually rotates with respect to the rotation of the pedal arm 285 to generate a larger viscous shear resistance near the pedal initial rotational position. Therefore, even in the damper 201 of this example, the collision of the pedal arm 285 to the stopper etc. can be avoided at the relationship with the viscosity of the viscous body 5, the spring force of the elastic means 292, etc., and the initial rotation position In the vicinity, the pedal arm 285 can be rotated as desired.

As described above, according to the present invention, the rotation transmission means comprises a guide path and a guide engaging means having a fastening member relatively freely engaged with the guide path, wherein at least a part of the guide path is curved. The rotational transmission of the rotation damping object to either one of the first and second relative rotating bodies is performed by the engaging member along the guide path through relative guide movement, or the rotational transmission means centers on the attachment site. While transmitting the rotation of the first relative rotating body to the second relative rotating body nonlinearly, the first relative rotating body and the second relative rotating body in the rotation of the first relative rotating body around the attachment site. To change the resistance against the rotation of the first relative rotating body about the attachment site resulting from the viscous resistance of the viscous body caused by the relative rotation of Therefore, for example, a pedal arm of a pedal parking brake, a large rotating window, a reclining seat such as a car, and the like can be given a predetermined resistance to rotation, and a return rotation speed and a return force are required for the rotating member. Not only can the time be set to the desired speed and time, but also collisions with the stopper at the initial rotational position can be avoided, eliminating the risk of damage caused by the impact sound, impact, etc. Can provide dampers and pedaled parking brakes.

1 is a cross-sectional view of one preferred embodiment of the present invention;

2 is a front view of the embodiment shown in FIG. 1;

3 is an explanatory diagram of an example in which the embodiment shown in FIG. 1 is used as a pedal arm of a pedal-type parking brake;

4 is an operation explanatory diagram of the example of FIG. 3;

5 is a cross-sectional view of another preferred embodiment of the present invention;

6 is an enlarged front explanatory view of the embodiment shown in FIG. 5;

7 is an operation explanatory diagram of the example shown in FIG. 5;

8 is an operation explanatory diagram of the example shown in FIG. 5.

<Description of the symbols for the main parts of the drawings>

1,201 Damper 2,202 Body

3,203: Attachment part 4,204: relative rotating body

5,205: Viscous 6,206: space

7,207: relative rotation body 8,208: rotation transmission means

11: housing body 12: annular projection

13: cover body 14: moving fitting member

15: sealing 16: rivet

23: shaft 32: main body

33: annular projection 36: stepped portion

41: connecting mechanism 43: guide alignment means

52: cylinder 53: arm

54: hexagonal color 55: engaging portion

60: arm 61: cylindrical portion

62: arm portion 71: fitting groove

72: fitting member 74: shaft

82: through hole 83: shaft

85: pedal arm 87: connecting pin

91: elastic means 92: stopper

97: Pedal 110310: Bracket

111,311 main body 211 annular protrusion

212 housing body 214 cover body

215: sealing 216: rivet

226: main body 227: shaft portion

231: recess 242: connecting means

243: guide alignment means 261: arm

271 fitting groove 272 fitting member

275 bracket 285 pedal arm

291 nut 292 elastic means

293: Stopper

Claims (5)

A second relative rotating body having a space for receiving the viscous body between the first relative rotating body and the first relative rotating body, the rotation being relatively freely disposed with respect to the first relative rotating body, And rotation transmission means for transmitting the rotation of the object to one of the first and second relative rotational bodies, the rotation transmission means having a guideway and a fastening member that is freely engaged with the guideway. The guide engaging means is provided, at least a part of the guide path is curved, and the rotational transfer of the rotation damping object to one of the first and second relative rotational weights is performed by the engaging member along the guide path relative to the movement of the guide. Damper intended to be run through. A pedal-type parking brake, wherein the damper according to claim 1 is used for a pedal arm as a rotation damping object, the pedal arm being freely attached to the vehicle body as a support, and the guide arm initially rotating at the stepped position of the pedal arm. A pedal-type parking brake formed such that the relative rotational amount of the second relative rotational body with respect to the first relative rotational body per unit rotational amount of the pedal arm is gradually increased at least near the initial rotational movement position in the rotation to the position. A first relative rotating body having an attachment portion for freely attaching the rotation to the support and a space for accommodating the viscous body between the first relative rotating body are formed so that the rotation is relatively free with the first relative rotating body. In the non-linear transmission of the rotation of the installed second relative rotor and the first relative rotor around the attachment site to the second relative rotor, the rotation of the first relative rotor around the attachment site Rotational transmission means for changing the resistance to the rotation of the first relative rotational body around the attachment portion caused by the viscous resistance of the viscous body caused by the rotation of the first and second relative rotational body relative to each other; Rotational transmission means is provided with a connecting means for connecting the second relative rotating body relative to the support so as to be relatively free to move and free to rotate, The distance from the center of rotation of the first relative rotor to the support to the center of rotation of the connecting means relative to the support is equal to the distance of the second relative rotor to the first relative rotor at the center of rotation of the first relative rotor relative to the support. A damper comprising a center of rotation of the first relative rotor relative to the support, a center of rotation of the connecting means relative to the support, and a center of rotation of the second relative rotor relative to the first relative rotor so as to be longer than the distance to the center of rotation. . A first relative rotating body having an attachment portion for freely attaching the rotation to the support and a space for accommodating the viscous body between the first relative rotating body are formed so that the rotation is relatively free with the first relative rotating body. In the non-linear transmission of the rotation of the installed second relative rotor and the first relative rotor around the attachment site to the second relative rotor, the rotation of the first relative rotor around the attachment site And rotation transfer means for changing the resistance to rotation of the first relative rotor about the attachment site resulting from the viscous resistance of the viscous body caused by the mutual relative rotation of the first and second relative rotors. Rotational transmission means, the arm is fixed to the second relative rotational body, the guide relative to the arm relative to the support relative to the free movement and rotation freely Description is walking and equipped with alignment means, and guide engaging means is a damper which is arranged to guide the relative movement of the arm to the support in a curve. A pedal-type parking brake comprising the damper according to claim 30 for a pedal arm, wherein the pedal arm rotates the first relative rotor around the attachment portion of the first relative rotor by its rotational movement. A pedal-type parking brake that is freely supported by the vehicle body as a vehicle and is connected to the first relative rotor.