JPH0313775Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an improvement of a check ball device used in various parts of mechanical equipment.

[Prior Art] In order to easily perform positioning and displacement between various parts of a mechanical device, for example, members that are subject to relative displacement such as a shift device of a vehicle, a ball that protrudes by the repulsive force of a spring and a recess into which the ball fits are used. A so-called check ball device is often used.

[Problem to be solved by the invention] However, it is good if the distance between the two members that undergo relative displacement is constant, but if this distance varies more than a certain amount due to the configuration of the two members, etc. cause inconvenience.

In other words, when the distance widens to a value close to the radius of the ball, it becomes difficult to perform relative displacement smoothly.
If it spreads further, the ball may even fly out.

In order to prevent such a situation, the diameter of the ball may be increased, but there is a limit to this because the entire check ball device becomes extremely large and causes problems. Further, although it is possible to narrow the range of variation in the distance between the two members, this may not be possible due to structural reasons.

The present invention was devised in view of the above-mentioned conventional problems, and the purpose is to provide a check ball device that does not cause troubles such as balls popping out even if the distance between the two relatively displacing members increases to some extent due to the ingenuity of the structure. [Means for Solving the Problems] In order to achieve the above object, the present invention is a check ball device in which the distance between one member that makes a relative positioning displacement and the other member also changes. The one member includes a sleeve fixed to its distal end side, a spring fitted into the sleeve in a compressed state, and a spring that freely moves on the inner surface of the sleeve in the axial direction of the sleeve. a sliding member having a length that does not fall off from the sleeve due to interval fluctuation; and a sliding member integrally protruding from the tip of the sliding member, wider than the sliding member, and having at least the tip portion formed into a spherical or cylindrical body. The other member, into which the protruding member of one member protrudes and fits to perform relative positioning displacement, has an arcuate groove arranged at a distance at the tip of the sleeve of the one member. The check ball device was constituted by an arcuate plate having an arcuate groove, and the arcuate groove provided with a recess for positioning and holding the protruding member.

[Function] In the check ball device of the present invention configured as described above, the protruding member, which corresponds to a conventional check ball, is attached to one side between the two relatively displaceable members.
Due to the presence of the sliding member integrally attached behind it, the smoothness of relative displacement is not impaired.
It also eliminates the situation where it pops out and comes off.

In other words, even if the distance between the two members increases considerably,
Since the sliding member has a sufficient length to prevent it from falling off the sleeve, there is no risk that the protruding member at the tip will come off from the other member.

In addition, since the protruding member is formed wider than the sliding member, even if one member is displaced to the maximum, the sliding member disposed on one member will not come into contact with the other member. As a result, extremely stable positioning and displacement operations can be continued.

[Embodiment] Hereinafter, an embodiment in which the check ball device of the present invention is applied to a shift device of a vehicle will be described based on the drawings of FIGS. 1 to 5.

A shift device 1 for shifting a transmission gear (not shown) of a vehicle is provided on the floor to the side of a driver's seat (not shown). The shift device 1 has a vertical shaft 5 connected and extended below the shift lever 3, and a short rectangular cylinder 7 is installed near the center of the vertical shaft 5 in the form of dividing the vertical shaft 5 into upper and lower parts. There is.

Inside the rectangular cylinder 7, a horizontal shaft 9 facing in the vehicle width direction is disposed to intersect the vertical shaft 5 at a substantially right angle, and is pivotally supported on the rectangular cylinder 7 by a pin 11.

Both ends of the horizontal shaft 9 extend through the left and right side walls of a bracket 13 of the shift device 1 fixed to the vehicle floor, and are rotatably and slidably supported by the side walls of the bracket 13. Furthermore, horizontal shaft 9
In this case, four annular grooves 1 are provided on the outer periphery of the one end portion 15.
7 is engraved.

A spring-loaded check ball device 19 engaging these annular grooves 17 is mounted on the side wall of the bracket 13 and in combination with the annular grooves 17 constitutes a lateral positioning means 21. This lateral positioning means 21 positions the axial movement of the lateral shaft 9.

On the other hand, a check ball device 2 with a spring is also provided at the lower end of the vertical shaft 5 extending below the rectangular cylinder 7.
3 is installed, and this check ball device 2
3 consists of the configuration of the present invention.

That is, as shown in FIG. 3, one member of the check ball device 23 is a sleeve 31 consisting of the vertical shaft 5 itself below the rectangular cylinder 7, a spring 33 fitted in the sleeve 31 in a compressed state, It consists of a sliding member 27 that freely moves in the axial direction on the inner surface of the sleeve 31, and a projecting member 29 that projects integrally from the tip of the sliding member 27.

Here, the outer diameter of the sliding member 27 is the same as that of the sleeve 31.
The sleeve is slightly smaller than the inner diameter of the sleeve, and has a length sufficient to prevent it from falling out of the sleeve due to variations in the spacing between the two members.

Further, the protruding member 29 is wider than the sliding member 27, has a spherical tip 25, and has a handle-shaped sliding member 27 integrally molded at its rear (upper side in FIG. 3).

Further, an arcuate plate 37 is disposed at a slight distance from the tip 35 of the sleeve 31 as the other member that performs relative positioning displacement together with the one member.

And, as shown in Figures 4 and 5,
The arcuate plate 37 is provided with arcuate grooves 41 having enlarged recesses 39 as positioning recesses with increased depth at three locations, at the center and at both ends.

The tip 3 of the sleeve 31 is inserted into this arcuate groove 41.
A protruding member 29 protrudes from 5, and the spherical body of its tip 25 is fitted and moved within the groove, and is positioned in the enlarged recess 39. That is, in this case, the vertical shaft 5 below the rectangular tube body 7 is one member that is relatively displaced for positioning, and the arcuate plate 37 is the other member.

Both members 5, 37, sleeve 31, and spring 3
3. The check ball device 23 is composed of the protruding member 29, the sliding member 27, and the like.

The shift device 1 of this embodiment configured as described above operates as follows.

First, when the shift lever 3 is swung in a so-called longitudinal direction along the vehicle traveling direction, the shift lever 3 and the vertical shaft 5 oscillate together with the lateral shaft 9 as the oscillation center. The swinging is performed by the protruding member 29 protruding from the lower end of the vertical shaft 5, that is, the tip 35 of the sleeve 31, being guided by the arcuate groove 41. Then, positioning is performed at the enlarged recess 39 in the arcuate groove 41.

Next, when the shift lever 3 is swung in the vehicle width direction, so-called lateral direction, a shift is made with the abutment point between the protruding member 29 protruding from the tip 35 of the sleeve 31 and the arcuate groove 41 at the lower end of the vertical shaft 5 as the center of oscillation. The lever 3 and the vertical shaft 5 swing together.

Then, the horizontal shaft 9 moves in the axial direction and is positioned by the check ball device 19. Since this axial movement of the horizontal shaft 9 is added to the rocking operation at this time, the distance between the axis of the horizontal shaft 9 and the arcuate groove 41, which is the rocking center, changes. In other words, the distance is shortest when the vertical shaft 5 is located on a line connecting the axes of the arcuate groove 41 and the horizontal shaft 9 at right angles, and this distance is large on the left and right sides thereof.

This tendency will not change unless the arcuate groove 41 is moved parallel to the axial movement of the horizontal shaft 9, and in reality, it is difficult to realize such a structure. The above-mentioned tendency becomes maximum at a shift position in which the shift lever 3 is oscillated in the vertical direction while being oscillated most horizontally to the left or right.

That is, the arcuate groove 41 and the tip 3 of the sleeve 31
5 is the widest. However, in the check ball device 23 of the present invention, since the sliding member 27 behind the protruding member 29 is fitted into the sleeve 31, the smoothness of relative displacement is not impaired by the widening of the spacing in this embodiment. Further, there is no fear that the protruding member 29 will pop out or fall off, and it can be used stably.

Furthermore, since the protruding member 29 is formed wider than the sliding member 27, even if one member is displaced to the maximum, the sliding member 27 disposed on one member will come into contact with the other member. Positioning and displacement can be performed smoothly without any problems.

Furthermore, in the case of the check ball device 23 of the present invention, there is no need to increase the dimensions of the protruding member 29, sliding member 27, etc., so the entire device including the arcuate plate 37 can be made extremely compact.

The check ball device of the present invention is not limited to the above-mentioned embodiment, but can be modified and applied to a certain degree. For example, the tip shape of the protrusion member may function similarly if it is cylindrical instead of the spherical shape.

Furthermore, a plastic sleeve or the like having low frictional resistance may be interposed between the sleeve 31 and the sliding member 27 to reduce the frictional resistance.

Furthermore, although the projecting member 29 and the sliding member 27 are integrally molded in the above embodiment, it is of course possible to manufacture these separately and integrate them by screwing or welding.

In addition to the above-mentioned vehicle shift device, the present invention can be easily applied to a location where the distance between the two members that are relatively displaced due to the structure changes, and the same function can be achieved.

[Effect] As is clear from the above explanation, according to the check ball device of the present invention, the displacement between the two members can be controlled even when the distance between the two members that undergo relative positioning displacement is unavoidable. There is no risk that the protruding member for positioning will pop out and fall off. Even when some members are displaced to the maximum, the swinging member disposed on one member does not come into contact with the other member, making it possible to continue extremely stable positioning and displacement operations. Therefore, the smoothness of relative displacement is not impaired.

[Brief explanation of the drawing]

1 to 5 show a shift device using a check ball device according to an embodiment of this invention, FIG. 1 is a partially cutaway front view explanatory view, and FIG. 2 is a side view with the front cut away. FIG. 3 is a vertical cross-sectional view of the main part, FIG. 4 is a plan view of another main part, and FIG. 5 is a side view of the same main part as in FIG. 5... Vertical shaft (one member that is relatively displaced for positioning), 23... Check ball device, 2
5... Tip (of the protruding member), 27... Sliding member, 29... Protruding member, 31... Sleeve, 33
...Spring, 35...Tip (of sleeve), 37...
...Arc-shaped plate (the other member that is relatively displaced for positioning), 39...Enlarged recess (recess).

Claims (1)

[Scope of utility model registration request] A check ball device in which the distance between one member that performs a relative positioning displacement and the other member also varies, the one member having a sleeve fixed to its distal end side and a compressed member within the sleeve. a spring fitted and inserted in the above-mentioned state, a sliding member that freely moves on the inner surface of the sleeve in the axial direction of the sleeve and has a length that does not fall off from the sleeve due to a change in the distance between the two members; integrally protrudes from the tip of the sliding member, and is wider than the sliding member;
The protruding member has at least a spherical or cylindrical tip, and the protruding member of one member is fitted into the protruding member for relative positioning, and the other member is disposed at the tip of the sleeve of the one member. A check ball device comprising an arcuate plate having arcuate grooves arranged at intervals, the arcuate grooves having a recess for positioning and holding the protruding member.