JPH0242273A - Bell crank operating device - Google Patents

Abstract

PURPOSE:To prevent deformation of the working end of a bell crank by movably holding a ball receipt bushing along a guide provided at the working end of the crank. CONSTITUTION:Guides 60 are furnished at the working end of bell cranks 25, 26. This guide 60 consists of a rectangular through hole having an upper and a lower mating edge 62, 63 parallel to each other, and a ball receipt bushing 65 made of plastics is held at each guide. This ball receipt bushing 65 is provided with an upper and a lower body 67, 68 fitted slidably in the longitudinal direction of the mating edges 62, 63 of the guide and with couplings 67, 70 for coupling the bodies 67, 68 with each other in a consolidated construction by plastics.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bell crank actuating device used, for example, for remote control of a manual transmission of an automobile.

[Prior Art] Devices for remotely controlling a transmission using a push-pull cable have been known. One component of this type of remote control system is a bell crank actuator that transmits the movement of a control lever to a cable. For example, the conventional device shown in FIGS. 6 and 7 includes a fixed base 101 and a first shaft 102 attached to the fixed base 101.
A first rotating body 103 is rotatably supported around the first rotating body 103, and a cable is attached to one end of each of the first rotating bodies 103, which is separately rotatably supported around the axis of the first support 102. A pair of left and right bell cranks 1013 and 107 having connecting portions 104 and 105; a second rotating body 110; ball studs 111 and 112 protruding from the second rotating body 11O in a direction parallel to the first axis 102;
The pole studs 111 and 112 are equipped with synthetic resin bushings 113 and 114 that are rotatably fitted into the pole studs 111 and 112, and the bushings 113 and 114 are connected to the bell cranks 106 and 10.
The U-shaped bushing receiver provided at the operating end of 7 is part 115.
It is slidably held at 116 degrees. The second rotating body 110 is urged to a neutral position by a return spring 117.

In the conventional device having the above configuration, when the lever 109 is moved in the left-right direction (X direction in the figure), the second rotating body 110 moves toward the second shaft 10.
Pole stud ill to rotate around 8, 1
12 is rotated about a second shaft 108, and bell cranks 108 and 107 are rotated in opposite directions. In this case, the second rotating body 110 and the bell crank ioe, 10
7, the relative positions and angles of the pole studs 111 and 112 with respect to the portions 115 and 116 of the bushing receiver change, but this change corresponds to the difference between the pole studs 11t and 116.
This is accommodated by the fact that 112 can freely rotate relative to the bushings 113, 114 and that the bushings 113, 114 can slide within the bushing receivers 115, 116.

On the other hand, when the lever 109 is moved in the front-back direction (the y direction in the figure), the first rotating body 103 and the second rotating body 110 rotate in the front-back direction centering on the first shaft 102, so that the bell The crank toe 107 rotates in the same direction according to the inclination of the lever 109. At this time, there is no change in the relative position of the pole studs 111, 11.2 with respect to the bush receiver parts 115, iie.

In other words, the lever 109, the second rotating body 110, and the bell cranks 106 and 107 tilt together by the same angle.

[Problems to be Solved by the Invention] In the above-mentioned prior art, the part that moves the bell cranks IOA and ID7 in response to the movement of the operating end of the bell cranks 106 and 107, that is, the lever 109, is the bush 113.
, 114 are slidably fitted into each other, the distal end side is open in a U-shape. For this reason, when a strong force is applied to the bushing receiver, the parts 115 and 118 may deform, and the movement of the lever 109 cannot be properly controlled by the bell crank 1.
There were some things that I couldn't convey to 06 and 107.

In addition, since it is necessary to attach the parts 115 and 116 of the U-shaped bush receivers, which are separate from the main bodies of the bell cranks 108 and 107, by welding or the like, the bell cranks 106 and 10
There is also the problem that the shape of 7 is complicated and it takes time and effort to manufacture.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a bellcrank actuating device that can accurately transmit the movement of a lever to a bellcrank without causing deformation of the operating end of the bellcrank.

[Means for Solving the Problems] In order to achieve the above object, the present invention has invented a bell crank actuating device having the following configuration. That is, a fixed base, an operating lever that is tiltably supported with respect to first and second axes orthogonal to each other, and a cable connection portion on the end side, and the first a bell crank that rotates around an axis; a ball support shaft provided in a direction parallel to the first axis; a ball provided slidably in the axial direction of the shaft; The ball receiving bushing has a fitting recess and is movably held along a guide portion provided on the operating end side of the bell crank.

[Operation] In the device of the present invention having the above configuration, when the lever is moved in the left-right direction, the second rotating body rotates about the second axis. Therefore, by tilting the ball support shaft provided on the second rotating body together with the second rotating body, the pair of bell cranks rotate in opposite directions, and the cable connected to the bell cranks rotates in opposite directions. move in opposite directions. When the second rotating body rotates around the second axis in this way, the ball holder relative to the working end of the bell crank changes depending on the angle of the shaft and the distance from the working end of the bell crank to the shaft. The distance etc. will change. These changes include the fact that the ball can move freely in the axial direction of the shaft, that the ball can rotate in all directions relative to the ball receiving bushing, and that the ball receiving bushing can move along the guide section of the bell crank. The movement of the operating lever is accurately transmitted to the bell crank.

When the lever is moved back and forth, the first rotating body and the second
Since the rotating bodies are integrally tilted in the front-rear direction about the first axis, each bell crank rotates in the same direction by an angle corresponding to the tilt of the operating lever. This causes the cables to move in the same direction.

[Embodiment] An embodiment of the present invention will be described below with reference to the bell crank actuating device 10 shown in FIGS. 1 to 5.

The fixed base 11 is fixed to a member on the vehicle body side (not shown). This fixed base 11 is provided with a bracket part 12.13 and a cable support part 14.15. A nut 17 is screwed into the tip of a bolt 16 serving as a first shaft A provided between the bracket parts 12 and 13.

A pipe 18 is inserted into the longitudinally intermediate portion of the bolt 16. The first rotating body 20 is supported rotatably around the first axis A. This first rotating body 20 has the above-mentioned vibrator 1.
A through hole 21 through which the 8 is inserted is provided, and
A spring receiver portion 22 is provided protruding from the lower end of the first rotating body 20 in the drawing. Further, a support shaft portion 23 serving as a second shaft B protrudes from both the front and rear surfaces of the first rotating body 20 in a direction orthogonal to the first axis A.

Furthermore, bell cranks 25 and 26 are provided at both left and right end surfaces of the first rotating body 20. bell crank 25
．． 26 are relatively rotatable around the first axis A. Annular spacers 27, 28 are interposed between the first rotating body 20 and the bell cranks 25, 26. A cable connection 30.31 is provided at one end of the bell crank 25.26, and one end of a push-pull cable 32.33 (only a portion of which is shown) is connected to each cable connection 30.31. The other ends of the cables 32 and 33 are connected to a transmission-side control device (not shown).

The second rotating body 35 is rotatably provided around the second axis B. That is, the cylindrical portion 36 of the second rotating body 35 is rotatably fitted to the support shaft portion 23. 2nd moving body 3
A presser member 39 is fixed to the front end surface side of 5 by a bolt 37 and a lock pin 38. This pressing member 39 allows the second rotating body 35 to be aligned with the second axis B with respect to the first rotating body 20.
is constrained in the axial direction. Annular spacers 40 and 41 are interposed between the first rotating body 20 and the second rotating body 35 and between the first rotating body 20 and the holding member 39, respectively.

An operating lever 45 is provided on the upper surface side of the second rotating body 35 in the drawing. A spring receiver portion 46 is provided protruding from the lower surface of the second rotating body 35 at a position opposite to the spring receiver portion 22 . In addition, a first shaft A is provided at the rear of the second rotating body 35 in the illustration.
A through hole 47 is provided in a direction parallel to this, and a ball support shaft 48 is inserted through this through hole 47. This shaft 48 is fixed to the second rotating body 35 by a set screw 49.

Balls 51, 52 are provided near both ends of the shaft 48. Each ball 51.52 is connected to the shaft 4
8 are inserted through holes 53, 54, and the balls 51.
52 is movable in the axial direction of the shaft 48. Third
As shown in FIG. 4 and FIG. 4 as a representative example of one ball 51, the ball 51 is provided with cut surfaces 55 and 56 parallel to each other on the opening side of the through hole 53.

Guide part 60.61 at the working end of the bell crank 25.26
is provided. As shown in FIGS. 3 to 5 as a representative example of one guide section 60, the guide section 60 is a rectangular through hole having a pair of upper and lower opposing edges 62 and 63 that are parallel to each other. .61 respectively hold ball receiving bushes 65 and 66 made of synthetic resin. The ball receiving bushes 65 and 66 are a pair of upper and lower bodies 67 and 68 that are slidably fitted in the longitudinal direction of the opposing edges 62 and 63 of the guide portions 60 and 61, respectively, and a connecting portion that connects the bodies 67 and 68 to each other. 69.70, and is integrally molded from synthetic resin.

Balls 51 are provided on mutually opposing surfaces of the bodies 67 and 68, respectively.
There are provided spherical recesses 72 and 73 into which a portion of the recess is rotatably fitted. The guide portion 6 is provided on the outer surface side of the body 67, 68.
A fittable groove 74.75 is formed in the opposite edge 62.63 of the 0. The length Ll of the body 67°68 is the opposite edge 62
．． It is shorter than the length Ll of 63. Therefore body 67.68
is movable in the longitudinal direction of the opposing edge 62.63 with the grooves 74 and 75 fitted into the opposing edge 62.63.

"<"-shaped connecting part 6 that connects the bodies 67 and 68
9.70 can be elastically bent like a leaf spring, so it is possible to displace the bodies 67, 68 in directions toward and away from each other. External vertical dimensions I of body 67.68! 1 (see Figure 3) is the distance M between the opposing edges 62 and 63
The distance 112 between the groove bottoms of the grooves 74 and 75 is greater than W and is equal to W. Therefore, the body 67, 68 is
0, hold the body 67.68 with your fingers so that the distance Jl between the bodies 67.68 is narrower than W, insert the body 67.68 between the opposing edges 62.63, and then insert the body 67.68 into the groove 74.75. may be fitted onto the opposing edges 62, 63. When you release your finger from the body 67.68, the elastic restoring force of the connecting portion 69.70 moves the body 67.68 to the opposite edge 62.63.
It can be left attached to the

The thickness dimension t between the parallel cut surfaces 55.56 of each ball 51.52 is slightly shorter than the distance 173 between the bodies 67.68 when held by the opposing edges 62.63, and the ball 51.52 The diameter of is greater than the distance between the bodies 67 and 68. Therefore the ball 51.52 is the body 67
．． When fitting the ball 51 to the body 68, as shown by the two-dot chain line in FIG.
What is necessary is just to make it fit in the recessed part 72,73 by making it stand up. In this state, the shaft 48 is inserted into the through hole 53,
If it is fixed with the setscrew 49, the ball 51 will be attached to the body 67.
It will no longer fall off between 68 and 68. According to the above configuration, after the balls 51, 52 and the bushes 65, 66 are mounted on the bell crank 25, 26, the shaft 48 is finally passed through and fixed with the setscrew 49, which facilitates assembly.

The return torsion spring 78 provided on the cylindrical portion 36 of the second rotating body 35 has a pair of arm portions 79.80, each arm portion 79.80 having a spring bearing portion 22.46 sandwiched therebetween. being engaged. When the second rotating body 35 rotates around the second axis B, one arm part (79 or 80) or the spring receiver is bent by the part 46 depending on the direction of the rotation, and the other arm Department (
80 or 79) The spring catch is stopped by the part 22. Therefore, the second rotating body 35 is always urged toward the neutral position by the elasticity of the spring 78.

Next, the operation of the apparatus of the above embodiment will be explained.

When the operating lever 45 is tilted in the X1 direction shown in FIG.
Because it rotates in the X1 direction, one bell crank 25
rotates in the clockwise direction in the figure around the first axis A, and the other bell crank 26 rotates in the counterclockwise direction in the figure around the first axis A. Therefore, one cable 32 moves in the pull direction and the other cable 33 moves in the bush direction. On the contrary, the operation lever 45 is
When tilted in two directions, the second rotating body 35 and shaft 48 rotate in the X2 direction around the second axis B, so one bell crank 25 rotates counterclockwise around the first axis A. At the same time, the other bell crank 26 rotates in the clockwise direction in the figure. Therefore, one cable 3
2 moves in the push direction, and the other cable 33 moves in the pull direction. By moving the cables 32, 33 in opposite directions, a first control (for example gear selection) is effected in a transmission (not shown).

When the second rotating body 35 rotates about the second axis B as described above, the shaft 48 tilts within the range of angle ±α, as shown on one side in FIG. bell crank 25
Since the ball receiving bush 65 moves vertically in the drawing but does not displace horizontally, the ball 51 slides relative to the shaft 48 in the axial direction, and the ball 51 rotates with respect to the bush 65. As a result, changes in the angle between the shaft 48 and the bell crank 25 are absorbed. In this case, since the shaft 48 does not rotate by 90 degrees, the ball 51 does not fall off the bush 65. Furthermore, as shown by the two-dot chain line in FIG. 5, although the ball 51 moves up and down, its position in the front and back direction does not change, so the bodies 67 and 68 slide relatively along the longitudinal direction of the edges 62 and 63. As a result, positional changes between the shaft 48 and the bell crank 25 are absorbed. Note that when the user releases the operating lever 45, the operating lever 45 returns to its original neutral position due to the elasticity of the spring 78.

When the operating lever 45 is tilted in the y1 direction, the first
The first rotating body 20 and the second rotating body 35 rotate together in the y1 direction about the axis A of the shaft 48.
The operation lever 45 rotates upward in the counterclockwise direction as shown in the figure.
The bell cranks 25 and 26 are both tilted in the y1 direction by an amount corresponding to the tilt angle. Conversely, the operating lever 45 is shown y2
When the first rotating body 20 is tilted in the direction
As the second rotating body 35 rotates together in the y2 direction, the shaft 48 rotates clockwise and descends, so that both the bell cranks 25 and 26 tilt in the y2 direction.

This movement of the cables 32, 33 in the same direction allows the second control (
For example, a gear shift) is performed.

According to the bell crank actuating device 10, since the guide portion 60.61 provided at the actuating end of the bell crank 25.26 has a closed mouth shape, the bush 65.6
Even if a large external force acts through the bell crank 25.
The operating end of 26 is not deformed and the force applied to the operating lever 45 is transferred to the ball 51.52 and the bush 65.66.
The signal can be accurately transmitted to the bell cranks 25 and 26 via. Since the guide portions 60, 61 of this embodiment may be square holes formed at the operating ends of the bell cranks 25, 26, the shape is simpler than that of the conventional bell crank (see Fig. 6), and the manufacturing process is time-consuming. It doesn't take, and the ball is 51.5
2 and the shaft 48 are also easy to assemble.

In the above embodiment, a pair of bell cranks of 25° and 26° was described, but the present invention has a pair of bell cranks of 25° and 26°.
The same applies to a bell crank actuating device having only one.

[Effects of the Invention] According to the present invention, the shape and structure of the bellcrank can be simplified, the operating end is less likely to deform, and the force applied to the operating lever can be accurately transmitted to the bellcrank.

[Brief explanation of the drawing]

1 to 5 show one embodiment of the present invention, in which FIG. 1 is a perspective view of a bellcrank actuating device, FIG. 2 is an exploded perspective view, and FIG. 3 is a part of a bellcrank, a ball and a bush. FIG. 4 is a cross-sectional view showing the positional relationship between the shaft and the ball, FIG. 5 is a side view showing the positional relationship between the bell crank and the ball, FIG. 6 is a perspective view showing the conventional device, and FIG. FIG. 2 is an exploded perspective view of a conventional device. A...First axis, B...Second axis, 10...Bell crank actuating device, 11...Fixed base, 20...
1st moving object, 25.26...bell crank, 30°3
1... Cable connection part, 32. 33... Cable,
35... Second rotating body, 45... Operation lever, 48...
... Ball support shaft, 51.52 ... Ball, 5
3゜54...Through hole, 55.56...Parallel cut surface, 60゜61...Guide part, 62.63...Opposing edge, 65゜66...Ball receiving bush, 67.68・
...Body, 69°0...Connection part, 72°3...Concave part.

Claims (2)

[Claims] (1) A fixed base, an operating lever supported so as to be tiltable with respect to first and second axes orthogonal to each other, and a cable connection portion on one end side, and the operating lever that is tiltable with respect to the first and second axes that are orthogonal to each other, and that a bell crank that rotates around a first axis, a ball support shaft provided in a direction parallel to the first axis, a ball provided slidably in the axial direction of this shaft, and a ball that is freely rotatable in the ball. 1. A bellcrank actuating device comprising: a ball receiving bush having a recess that fits into the bellcrank, and a ball receiving bush that is movably held along a guide portion provided on the operating end side of the bellcrank. (2) The guide portion is a hole having a pair of opposing edges that are parallel to each other, and the ball receiving bush is made of synthetic resin and includes a pair of bodies that are slidably fitted to the opposing edges, respectively, and a pair of bodies that are slidably fitted to the opposing edges. It has a connecting part that connects the
Further, the ball has a through hole through which the ball support shaft is slidably inserted in the axial direction, and cut surfaces parallel to each other on the opening side of the through hole, and a thickness t between the parallel cut surfaces is set to the guide portion. 3. The bellcrank actuating device according to claim 2, wherein the distance between the bodies in the held state is shorter than the distance l_3, and the diameter D of the ball is larger than the distance l_3 between the bodies.