JPH0519640Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a knob for a shift lever that changes gears in an automobile.

(Prior art) Conventionally, a knob made of synthetic resin was used as a knob for a shift lever for changing gears in an automobile.
It is well known from the publication No. 1, and is made of a hard synthetic resin to form a cylindrical core 1 with a thin cup body 3 attached, and this core 1 is covered with a main body 5 of foamable synthetic resin. .

Furthermore, a structure in which the inner part of the hollow knob of the shift lever is molded with hard synthetic resin and the outer part is covered with a relatively soft skin such as soft vinyl chloride is known from Japanese Utility Model Application Publication No. 17044/1983. Furthermore, a shift lever in which a weight is screwed into the hollow part of the knob via an elastic body is known from Japanese Utility Model Publication No. 48-42409.

(Problem that the invention attempts to solve) The above-mentioned conventional shift lever knob (Jikosho
56-38574), the core 1 is made of hard synthetic resin and the main body 5 is made of foamed synthetic resin, so the knob is too light and the shift lever shakes due to engine vibration, causing a chattering sound. There was a problem that it was noisy (similar to the one described in Japanese Utility Model Application Publication No. 17044/1983).

In addition, those described in Utility Model Publication No. 48-42409 are
Because it is a hollow structure, the space occupied by the weight is small (compared to a solid one), and conversely, if you try to increase the space occupied by the weight, there is a problem that the knob itself will become larger. .

In addition, since the weight is fixed by screwing, the work is troublesome, and when used for a long period of time, the weight may become misaligned and may easily become deformed or damaged depending on the wall thickness. It was hot.

This invention was made to solve the above-mentioned conventional problems. By attaching weights to the center body and increasing the weight, the shift lever is stabilized and does not cause chattering noise or gear disengagement. The purpose is to provide picks for use.

(Means for solving the problem) In order to achieve the above object, the shift lever knob of the present invention has a core made of hard synthetic resin with a head formed above the threaded part of the lever, A weight press-fitted into a recess formed in the head of the core body or inserted into the head; an outer layer made of a soft synthetic resin that is soon integrated with the outside of the core body having this weight by secondary molding; It is equipped with a skin part formed integrally with this.

(Function) The shift lever knob configured as described above is provided with a head 5 on the upper part of a core body 1 which is primarily molded from hard synthetic resin, and a weight 7 is press-fitted into a recess 6 formed in the head 5. Alternatively, after inserting into the head 5, an outer layer 8 made of soft synthetic resin is immediately formed on the outside of the core body 1, so when this knob is attached to the shift lever 2, the shift lever 2
As the tip of the shift lever 2 becomes heavier and has more inertia, the shift lever 2 is prevented from swinging due to engine vibrations and does not generate chattering noise. It also has the effect of improving the operating feel of the shift lever and increasing the reliability of switching.

(Example) An example of a knob for a shift lever according to the present invention will be described below based on the drawings.

Figure 1 of the drawings shows the first embodiment. In the figure, 1 is a core body made of a hard synthetic resin, for example, the product name Jyuracon, and a screw provided at the upper end of the shift lever 2 is attached to the lower part of the core body. 3 is provided, and a head portion 5 formed as large as possible is provided above the screw portion 4, and this head portion 5 is provided with a recess portion 6 that opens upward.

Reference numeral 7 designates a weight made of iron, for example, which has a large specific gravity, and is formed to be larger than the above-mentioned recess 6 by a compression allowance, and is integrated with the core body 1 by being press-fitted into the recess 6 as shown in FIG. It is designed to prevent rattling.

Reference numeral 8 denotes an outer layer portion made of a soft synthetic resin such as foamed vinyl chloride, which is integrated with the outside of the core body 1 by secondary molding to enclose the core body 1. A skin portion 9 is integrally formed on the surface.

In this embodiment, after the core body 1 is primarily formed, an iron weight 7 is inserted into the recess 6 of the head 5.
By expanding and press-fitting the weight 7, the weight 7 is held by the restoring force of the center body 1, and the outer layer 8 is placed outside the center body 1.
After secondary molding, the core body 1 and the weight 7 are formed so that they do not come loose and wobble, and the press-fit type of the weight 7 is similar to the other embodiments in which the weight 7 is inserted. Although the primary forming of the core body 1 is easier than in the case of the above-mentioned case, care should be taken to prevent the core body 1 and the weight 7 from coming apart as described above.

FIG. 3 shows a second embodiment. In the figure, 1 is a core body made of the same material as the first embodiment, and a threaded portion 4 of a screw 3 in a shift lever 2 is attached to the lower part of the core body. There is a threaded part 4
A head 5 as large as possible is formed in the upper part of the mold, and as shown in FIG. 3, an iron weight 7 with a plurality of horizontal holes 10 is inserted during molding. A part of the core body 1 is passed through the hole 10 described above to ensure the connection between the core body 1 and the weight 7. In this insert type, the core body 1 and the weight 7 are
Although there is no fear that the particles will be released, primary molding is more difficult than that of the first embodiment. In this embodiment, the same members as in the first embodiment are designated by the same reference numerals.

Drawing 4 shows a third embodiment. In the second embodiment, the hole 10 of the weight 7 inserted into the core body 1 was opened in the horizontal direction, whereas in this embodiment, the hole 10 in the weight 7 inserted in the core body 1 was opened in the vertical direction. This embodiment is the same as the second embodiment, except for the openings in the second embodiment. In this embodiment as well, the same members as in the first embodiment are designated by the same reference numerals.

FIG. 5 shows a fourth embodiment. In the case of Diuracon, a powder with a high specific gravity, for example, barium sulfate 11, is mixed into the core body 1 in the first embodiment. The increase in the weight of the pick was measured by increasing the value to 3 or more.

In this embodiment, since the specific gravity of the center body 1 increases, the weight 7 described above can be made smaller by that amount.Also, if the weight of the weight 7 is kept unchanged, the weight of the knob can be further increased and the shift lever In this embodiment, the same members as in the first embodiment are designated by the same reference numerals.

(Effects of the invention) In the shift lever knob of the present invention, a weight is press-fitted into the recess formed in the head of the center body or inserted into the head, so the knob becomes heavy.
This increases the inertial force acting on the shift lever that is attached to it, so the shift lever does not oscillate even when engine vibrations are transmitted and remains stable in the set position, eliminating the generation of noisy chattering noises. The lever shift has a good feel and gear changes are performed reliably.

In addition, the weight can be held above the tip of the shaft, increasing the distance from the vibration source to the weight.
The inertial force increases, further improving stability, and since the knob itself is solid, the knob can be made heavier and more stable.

In addition, there is a weight that is press-fitted into a recess formed in the head of the core body or inserted into the head, and an outer layer made of soft synthetic resin that is soon integrated by secondary molding on the outside of the core body that has this weight. Because of this, it can be mass-produced using molds, and the structure can be strengthened because there is no time required.There is no risk of breakage, the knob itself can be made smaller, and it can be used for a long time. It is possible to obtain a stable knob for a shift lever without causing any displacement of the weight.

Since a soft synthetic resin outer cover is provided on the outside of the core body, it has unique effects such as a good feel and high cosmetic value.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing a first embodiment of a knob for a shift lever according to the present invention. Second
The figure is an explanatory diagram when a weight is press-fitted into the core body in the same as above. FIG. 3 is a longitudinal sectional front view showing the second embodiment of the same. Figure 4 is the same as above.
FIG. FIG. 5 is a longitudinal sectional front view showing the fourth embodiment of the same. In the figure, 1 is the center body, 2 is the shift lever, 4 is the
Screwed part, 5 is a head, 7 is a weight, 8 is,
This is the outer layer.

Claims (1)

[Scope of utility model registration request] A core body made of hard synthetic resin with a head formed above the threaded part of the lever, a weight press-fitted into a recess formed in the head of the core body or inserted into the head, and a core body having this weight. A knob for a shift lever characterized by having an outer layer made of a soft synthetic resin that was soon integrated by secondary molding, and a skin part that was formed integrally with the outer layer.