JPH06848U - Connection structure of rod end - Google Patents

Abstract

(57) [Summary] [Structure] The connecting portion 4B formed by bending from the tip of the rod main body portion 4A is passed through the through hole 3 of the connected member 24,
The rod 23 and the connected member 24 are connected. The rod connecting portion 4B inserted into the through hole 3 of the connected member 24 is bent from the front end to form a front end portion 4C substantially parallel to the main body portion 4A. [Effect] The flat washer, the split pin, and other parts are not required to connect the rod 23 and the connected member 24, and the assembly is easy.
Moreover, the amount of backlash can be reduced and the noise can be reduced.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rod tip connecting structure used for connecting two members.

[0002]

[Prior art]

 For example, when connecting the rod tip to the link, bend the rod tip at a right angle to form a connecting part, and insert this connecting part into the through hole of the link to fit a flat washer. A cotter pin is inserted at the tip to prevent it from coming off.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional technique, a large number of parts such as a flat washer and a split pin are required, and the assembling work thereof is troublesome, and since the through hole of the link is a stupid hole, there is play between the rod and the through hole. However, the rod was likely to vibrate and generate noise. In the present invention, since the tip portion of the rod connecting portion is further projected substantially parallel to the main body portion, parts such as a flat washer and a split pin are not required, and the assembly is easy, and the backlash is reduced. It is an object of the present invention to provide a rod tip connection structure that can reduce noise.

[0004]

[Means for Solving the Problems]

 A concrete means for solving the problem in the present invention is a rod tip for connecting a rod and a connected member by penetrating a connecting portion formed by bending from a tip of a rod main body into a through hole of the connected member. In this connection structure, the rod connecting portion inserted into the through hole of the member to be connected is bent from the front end to form a front end substantially parallel to the main body.

[0005]

[Action]

 When the rod 23 is inserted into the through hole 3 of the connected member 24 from the tip portion 4C, the connecting portion 4B is arranged in the through hole 3 and the rod 23 and the connected member 24 are connected. With the connecting portion 4B inserted in the through hole 3, the moving force of the rod 23 is transmitted to the connected member 24, and the tip portion 4C prevents the connecting portion 4B from coming off from the through hole 3.

[0006]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 to 6, reference numeral 11 denotes a door lock device for a tractor cabin, which is provided with a striker 13 on a cabinet frame 12, a door 14 is provided with a lock claw 15 which engages with the striker 13, and a lock claw 15 for operating the lock claw 15. An external handle 16, an internal handle 17, a lock knob 18, a lock key 19 and the like are provided.

The external handle 16 is pivotally supported by a handle seat member 20 fixed to the door 14, and when rotated, the engaging body 21 moves to swing the bell crank 22, and the bell crank 22 holds the rod 23. The link 24 that releases the lock claw 15 is rotated. The internal handle 17 is pivotally supported by a bracket 25 fixed to the door 14, and when rotated, the rotating body 26 rotates to push and pull the rod 27, and the link for releasing the lock claw 15 via the rod 27. 28 is rotated.

A rod 32 of the lock knob 18 supports a bracket 25 so as to be movable in the vertical direction, and a lower end of the lock knob 18 is connected to a lock cam lever 29. When the lock knob 18 is pushed down, the lock cam lever 29 is rotated to hold the lock claw 15 in a locked state. When the lock key 19 is inserted and the lever 30 provided on the rotor is rotated, the lock cam lever 29 is rotated via the rod 31 connected to the lever 30 to operate the lock claw 15 in the locked state. ·To release.

The rods 23 and 31 and the rod 32 of the lock knob 18 are bent from the tip of the body portion 4A of the rod to form a connecting portion 4B, and the tip of the connecting portion 4B is substantially parallel to the body portion 4A. A bent tip portion 4C is formed. The connecting portion 4B is bent at a right angle or an angle close to it with respect to the main body portion 4A and the tip portion 4C. The connecting portions 4B of the rods 23, 31 and 32 are inserted into through holes 3 formed in the link 24 and the lock cam lever 29 (these are connected members to which the rods are connected), and are pushed respectively. By pulling, the moving force is transmitted to the link 24 and the lock cam lever 29 to rotate or swing them.

The tip portion 4C of the rod is inserted into the through hole 3 of the member to be coupled from the axial direction, and thereafter, the rod is rotated by about 90 degrees to engage the coupling portion 4B with the through hole 3. By itself, the rod is pivotally connected to the connected member. The length of the connecting portion 4B is substantially equal to the wall thickness of the member to be connected, and in the state where the connecting portion 4B is engaged with the through hole 3, the member to be connected is in contact with the main body portion 4A and the tip portion 4C, and Since the bent portion of the portion 4B and the main body portion 4A and the tip portion 4C has a corner portion and comes into contact with the edge of the through hole 3, there is almost no play in the axial direction and the radial direction of the rod with respect to the connected member. There is no state.

A long hole 23 A is formed at the lower end of the rod 23, and is connected to the bell crank 22 via a pin 35. The pin 35 has conventionally been designed to be prevented from coming off with a split pin, but it is difficult to insert and remove the split pin because it is a narrow space. Therefore, here, the press-fitting member 36 is used so that the pin 35 can be stopped only by inserting it from one direction.

That is, as shown in FIGS. 5 and 6, the pin 35 is a headed pin having a small diameter portion 35 A, and the press-fitting member 36 is made of plastic or the like and has a tapered tip. When the press-fitting member 36 is inserted into the hole 22A of the bell crank 22 in advance and the pin 35 inserted into the long hole 23A of the rod 23 is inserted into the press-fitting member 36, the press-fitting member 36 is tapered to the small diameter portion 35A. The taper portion 36A is engaged to prevent the pin 35 from coming off. A plurality of slits parallel to the axis may be formed in the tapered taper portion 36A.

The long hole 23A at the lower end of the rod 23 is a play structure for preventing the reverse operation from the link 23 side to the external handle 16, and as this play structure, instead of the long hole, the structure shown in FIGS. As shown, it may have a structure in which two rods are elastically connected. That is, the ends of the two rods 40 and 41 are rounded to form fitting portions 40A and 41A, and the coil spring 42 is fitted between the fitting portions 40A and 41A of one rod 40. The two rods 40 and 41 are respectively connected to the members to be connected while the coil spring 42 is compressed.

Therefore, when one rod 40 is pulled in the extension direction, the coil spring 42 is in a compressed state, so the other rod 41 is pulled, and when one rod 40 is moved in the contraction direction, the coil spring 42 is Only the extension but the other rod 41 does not move. FIG. 9 shows a link structure in which two levers (or links) having different strokes are connected by a rod. The lever 30 of the lock key 19, the lock cam lever 29, and the rod 31 connecting them are shown. It can be used for connecting structures.

A semi-circular arc-shaped cam portion 44A is formed on the operation shaft (rotor shaft) 44, and a substantially three-quarter arc-shaped cam hole 30A formed in the lever 30 is fitted into the cam portion 44A. A play 45 of about 45 degrees is formed between 44A and the cam hole 30A. The lock cam lever 29 is rotatable via a shaft 46, is connected to an unstable switching spring 47, and is connected to the lever 30 via a rod 31.

When the operation shaft 44 is rotated in the direction of the arrow in FIG. 9, after rotating for 45 minutes of play, the rod 31 is pulled through the lever 30 to rotate the lock cam lever 29. When the spring 47 passes through the center of the shaft 46, the lock cam lever 29 is rotated by the force of the spring 47, and conversely the lever 30 is rotated in the same rotation direction. At this time, since the play 45 is formed in the rotation direction of the lever 30, even if the lever 30 is rotated, the turning force does not act on the operation shaft 44 and it is not pushed.

This structure has the same effect as forming a long hole at the end of the rod, and is useful for simplifying the end shape of the rod 31.

[0018]

[Effect of device]

 According to the present invention described in detail above, the connecting portion formed by bending from the tip of the rod body is passed through the through hole of the connected member to connect the rod tip end for connecting the rod and the connected member. In the structure, since the rod connecting portion that is inserted into the through hole of the connected member is bent from the front end to form a tip portion that is substantially parallel to the main body portion, it is possible to connect the rod and the connected member. It does not require flat washers, cotter pins, etc., and is easy to assemble, and it also reduces play and noise.

[Brief description of drawings]

FIG. 1 is a sectional plan view showing an embodiment of the present invention applied to a door lock device.

FIG. 2 is a side view of the same section.

FIG. 3 is a plan view of the same section.

FIG. 4 is a sectional view taken along line XX of FIG.

5 is a cross-sectional view taken along the line YY of FIG.

FIG. 6 is an exploded perspective view of a rod connecting structure.

FIG. 7 is a perspective view showing a modified example of the rod connection play structure.

FIG. 8 is a sectional view of the same.

FIG. 9 is a perspective view showing another example of the rod connection play structure.

[Explanation of symbols]

 3 Through Hole 4A Body Part 4B Connecting Part 4C Tip Part 11 Door Lock Device 14 Door 15 Lock Claw 16 External Handle 17 Internal Handle 23 Rod 24 Link (Connected Member) 27 Rod 29 Lock Cam Lever (Connected Member) 30 Lever 31 Rod 32 rod

Claims (1)

[Scope of utility model registration request] 1. A rod tip connecting structure for connecting a rod and a connected member by penetrating a connecting portion formed by bending from a tip of a rod main body into a through hole of the connected member,
A connecting structure of a rod tip, characterized in that the rod connecting portion inserted into the through hole of the connected member is bent from a tip to form a tip portion substantially parallel to the main body portion.