JPH045800Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shift lever device for a vehicle transmission.

[Prior Art] For example, as disclosed in Japanese Utility Model Application Publication No. 58-85527, a method based on an electric signal that detects the operating position of a shift lever when the driver's seat and the mounting position of the transmission are far apart. Some actuators selectively operate an actuator that provides axial movement to the control rod and an actuator that provides rotational movement to the control rod, depending on the output of the electronic control device.

In the above-mentioned shift lever device, there is no mechanical connection such as a link mechanism between the shift lever and the transmission, and the shift lever and the transmission are simply connected by an electrical conductor. Therefore, although the mechanical part of the shift lever simply functions as a select/shift position selection switch or a sensor that detects the position, drivers may mistakenly use the shift lever due to their familiarity with the conventional link-type shift operation mechanism. There is a risk of applying excessive operating force. For this reason, even though this type of shift lever device only needs to have enough strength to operate the switch, it has more strength than necessary in consideration of the above circumstances, resulting in a reduction in weight. This was hindering efforts to reduce costs.

[Problems to be solved by the invention] Therefore, the purpose of the invention is to reduce the design strength by providing a mechanism that prevents excessive operating force from being applied to the shift lever, and to provide a compact, lightweight and inexpensive shift lever. An object of the present invention is to provide a shift lever device for a transmission that can be used.

[Means for Solving the Problems] In order to achieve the above object, the structure of the present invention is such that at least one of the upper end surface of the shift lever and the lower surface of the grip, which are tiltably stacked on top of each other by the force of a spring, is provided. A flexible member is provided between the shift lever and the grip and passes through the overlapping surfaces of the two, and the lower end surface of the grip is biased and engaged with the upper end surface of the shift lever. The above-mentioned springs are connected in series.

[Operation] Normally, the lower end of the grip is strongly pressed against the upper end of the shift lever by the force of a spring interposed between the end of the flexible member extending from the shift lever and the grip, so the driver cannot If you move the grip with your hand back and forth, left and right, the shift lever will be tilted forward and backward and left and right in unison with the grip.

When an excessive operating force is applied to the grip, the grip tilts back and forth or left and right with respect to the upper end surface of the shift lever against the force of the spring, thereby preventing excessive operating force from being transmitted to the shift lever.

A partially conical surface provided on the upper end surface of the shift lever or the lower end surface of the grip prevents the two from shifting, and when the operating force is released, the grip is superimposed on the shift lever in a predetermined position by the force of the spring. .

[Embodiment of the invention] As shown in FIG. 1, a grip 1, commonly referred to as a knob, is connected to a shift lever 3 via an adapter 2. The adapter 2 is screwed into the shift lever 3 through a screw hole 13 provided at the lower end. A cable 4 as a flexible member is inserted into the screw hole 13 of the adapter 2 from the upper end side through the hole 12, and a stopper 5 for preventing the cable 4 from coming off is coupled to the lower end of the cable 4. The upper end surface 16 of the adapter 2 has a flat oval shape, whereas the flat oval lower end surface 26 of the grip 1 has a lower end surface 26 extending downward from the periphery in order to prevent misalignment of the grip 1 with respect to the adapter 2. A protruding conical surface 1a is integrally formed.

Hole 17 for inserting the cable 4 into the lower half of the grip 1
However, a large-diameter cylindrical portion 18 is provided in the upper half from the stepped portion 14, respectively. Grip 1 and adapter 2
The cable 4 passing through the overlapping surface of the
The nut 8 is tightened. A spring 7 is interposed between the nut 8 and the stepped portion 14. The upper end of the cylindrical portion 18 is closed by a cover 9.

Next, the operation of the shift lever device for a transmission according to the present invention will be explained. Normally, the cable 4 is pulled up by the force of the spring 7, and the grip 1 is pulled up by the reaction force.
The lower end surface 26 of the adapter 2 is strongly pressed against the upper end surface 16 of the adapter 2. In a normal gear shifting operation, when the driver moves the grip 1 back and forth and left and right, the shift lever 3 tilts back and forth and left and right together with the grip 1.

When an excessive operating force is applied to the grip 1, the spring 7 stretches, and the grip 1 tilts forward and backward or left and right with respect to the upper end surface 16 of the adapter 2. At this time, the upper end surface 16 and the lower end surface 26 abut each other at one side edge, and only separate from each other at the other side edge, so that the conical surface 1a prevents slippage or misalignment between the upper end surface 16 and the lower end surface 26. It can be suppressed.

By tilting the grip 1 with respect to the adapter 2,
Excessive operating force is prevented from being transmitted to the shift lever 3, and the driver can also sense that the operating force of the shift lever 3 is a problem.

When the operating force applied to the grip 1 is released, the lower end surface 26 of the grip 1 is superimposed on the upper end surface 16 of the adapter 2 due to the restoring force of the spring 7, resulting in the state shown in FIG. 1. Since the upper end surface 16 and the lower end surface 26 are ellipsoidal surfaces having a long axis in the front-rear direction, the limit load applied to the grip 1 is large in the front-rear direction and small in the left-right direction.

In the embodiment shown in FIG. 2, the adapter 2 supports a pin 31 that crosses the hole 12, the grip 1 supports the pin 20 that crosses the cylindrical part 18, and the spring 7 is suspended between the pin 31 and the pin 20. This is what I did. The straight portion of the spring 7 passes through the overlapping surface of the grip 1 and the adapter 2. The upper end surface 16 of the adapter 2 has a conical shape such that the center part is high and the peripheral part is low, and the lower end surface 26 of the grip 1 is also recessed in a substantially conical shape. Preferably, the peripheral edges of the end surfaces 16 and 26 are elliptical, and the slope in the left-right direction is steep, and the slope in the front-back direction is gentle, so that tilting in the front-back direction (shift operation) and tilting in the left-right direction ( It is possible to set different limit loads for select operations).

In the embodiment shown in FIG. 3, a partially conical surface is formed by a protrusion 34 in the central portion of the flat upper end surface 16 of the adapter 2, and a protrusion 34 on the lower end surface 26 of the grip 1
A conical recess 35 is formed which engages the cylindrical member 4, respectively. An end of a flexible rod 41 extending from a sliding body 45 fitted in the cylindrical portion 18 is connected to the stopper 42 fitted in the screw hole 13 so as not to come off.

The ball 36 is forcefully engaged with the cam surface 43 provided on the sliding body 45 by the spring 39 . The ball 36 and the spring 39 are housed in a cylindrical part 37 of the grip 1, and the cylindrical part 37 is closed by a screw plug 38. Sliding body 4
5 and the rod 41 are integrally molded, for example, from synthetic resin, and the distal end of the rod 41 is integrally molded with a dovetail-shaped retaining piece 44 as shown in FIG.
Elongated hole 46 of stopper 42 molded from synthetic resin
Then, by compressing and inserting the retaining piece 44 of the rod 41 and turning the stopper 42 by 90 degrees, the rod 41 and the stopper 42 are brought into engagement.

In the embodiment shown in FIG. 3, the lower end surface 26 of the grip 1 normally overlaps the upper end surface 16 of the adapter 2 due to the engagement between the ball 36 biased by the spring 39 and the cam surface 43 of the slider 45. Although it has been done, the grip 1
When an excessive operating force is applied to the adapter 2, the ball 36 is pushed into the cylindrical portion 47 against the force of the spring 39, and a relative movement occurs between the sliding body 45 and the grip 1, causing the grip 1 to move toward the adapter 2. This prevents excessive operating force from being transmitted from the grip 1 to the shift lever 3.

In the embodiment shown in FIG. 5, a rod or cable 47 as a flexible member is attached to the hollow shift lever 3.
is inserted, the upper end of the cable 47 is coupled to a stopper 51 housed in the cylindrical portion 18 of the grip 1, and the lower end of the cable 47 is locked to one end of a spring 52. The other end of the spring 52 is locked to a protrusion 53 that is integral with the shift lever 3. The protruding piece 53 is an inverted L-shaped arm 60
established in

The arm 60 is supported by a pin 58 through a long hole 46 in the middle portion of the forked portion 59 of the fork 57, and its upper end is connected to the lower end of the shift lever 3. arm 60
The lower end of the floor panel 54 is connected to the floor panel 54 by a ball joint 61.
It is supported by a guide 55 fixed to. fork 5
7 is supported by the floor panel 54 so as to be slidable in the axial direction and rotatable around the axis.

A partially conical surface of the recess formed by expanding the upper end portion 50 of the shift lever 3 is engaged with a conical surface protruding from the lower end surface of the grip 1.

In this embodiment as well, when an excessive operating force is applied to the grip 1, the spring 52 is stretched and the grip 1 is tilted with respect to the shift lever 3, thereby avoiding transmission of an excessive operating force to the shift lever 3.

[Effects of the invention] As described above, the present invention provides a portion on at least one of the upper end surface of the shift lever and the lower end surface of the grip, which are stacked so as to be tiltable relative to each other by the force of a spring, to restrict the displacement of the two. A flexible member having a conical surface and connecting in series between the shift lever and the grip, the flexible member passing through the overlapping surfaces of the two and the spring biasingly engaging the lower end surface of the grip toward the upper end surface of the shift lever. Therefore, the structure is simple, and when an excessive operating force is applied to the grip, only the grip tilts with respect to the shift lever, thereby preventing excessive operating force from being transmitted to the shift lever. Therefore, there is no need to increase the strength of the shift lever device more than necessary, and the shift lever device can be made smaller, lighter, and cheaper than conventional devices.

[Brief explanation of the drawing]

FIG. 1 is a front sectional view of a shift lever device for a transmission according to a first embodiment of the present invention, and FIGS. 2 and 3 are a front sectional view of a shift lever device for a transmission according to a second and third embodiment of the present invention, respectively. 4 is a front sectional view showing an enlarged main part of the shift lever device shown in FIG. 3; FIG. 5 is a front sectional view of a shift lever device for a transmission according to a fourth embodiment of the present invention. It is a diagram. 1... Grip, 1a... Conical surface, 2... Adapter, 3... Shift lever, 4... Cable, 7...
...Spring, 16... Upper end surface, 26... Lower end surface.

Claims (1)

[Scope of utility model registration request] A partial conical surface is provided on at least one of the upper end surface of the shift lever and the lower surface of the grip, which are stacked so as to be tiltable relative to each other by the force of a spring, and a partial conical surface is provided between the shift lever and the grip. 1. A shift lever device for a transmission, characterized in that a flexible member passing through their overlapping surfaces and the spring for biasingly engaging a lower end surface of the grip with an upper end surface of the shift lever are connected in series.