JPH0421064Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a locking device for temporarily securing a link mechanism used in a vehicle height sensor, etc., and is particularly used to improve work efficiency such as installation work. The present invention relates to a sensor mounting device having a link mechanism that sets the link mechanism to a stopped state in a predetermined state.

[Prior Art] An example of a conventional sensor having this type of link mechanism is a vehicle height sensor. In this type of vehicle height sensor, a vehicle height sensor 2 is attached to a frame 1 constituting the vehicle body, and a link mechanism 3 rod member 3a
Atsupa arm 6 to which brake disc 4 and hub 5 are attached via nutacle spindle
Or attached to the lower arm. Note that the tie rod 7 is attached to the knuckle arm.

Therefore, when the vehicle height sensor 2 is normally used, the rod member 3a of the vehicle height sensor 2 may move up or down depending on the relative relationship between the position of the frame 1 and the hub 5, that is, the relative relationship between the vehicle body and the wheels. The vertical displacement of the rod member 3a is determined by the link mechanism 3 consisting of the rod member 3a and arm member 3b of the vehicle height sensor 2.
The rotation angle of the vehicle height sensor 2 is used to determine the vehicle height.

[Problems to be solved by the invention] This type of vehicle height sensor 2 has a link mechanism 3 consisting of a rod member 3a and an arm member 3b, and furthermore, the rod member 3a is attached to an upper arm 6 or a lower arm 7. However, when attaching the vehicle height sensor 2 to the frame 1, the rod member 3a constituting the link mechanism 3 is attached to the vehicle height sensor 2.
Since it hangs down from the top and acts as a weight, there was a problem in that it was difficult to place the vehicle height sensor 2 in a certain position when installing it.

Alternatively, even if the jack up distance of the vehicle is constant, it is necessary to move the rod member 3a up and down to set the attachment position of the end of the rod member 3a.
There was a problem that a had to be adjusted.

In order to solve these problems, it is conceivable to provide a means for locking the link mechanism 3, but if the link mechanism 3 is fixed with a locking means, it can be removed once the installation of the vehicle height sensor 2 is completed. A problem arises in that the effort required to remove the locking means is required, and furthermore, the effort required to recover the removed locking means is added. Alternatively, if one forgets to remove the locking means, there is a problem that it may cause sensor failure or control abnormality.

Therefore, the present invention aims to solve the above problems.
It is an object of the present invention to provide a sensor mounting device having a link mechanism that does not require the effort of keeping the link mechanism in a fixed state when mounting a sensor and releasing the fixed state when the mounting is completed.

[Means for Solving the Problems] A sensor mounting device having a link mechanism according to the present invention includes a link mechanism that includes an arm member that rotates a rotation shaft that is an input of the sensor, and a rod member that is coupled to the arm member. The block main body is engaged with a protrusion that is easily cut off by external force, and has the protrusion that is fixed to the sensor.

[Function] In the present invention, the link mechanism consisting of an arm member that rotates the rotation axis that is the input of the sensor and a rod member that is coupled to the arm member has a protruding shape that is easily cut by an external force applied to the link mechanism. Since the block main body is provided with the protruding part that is fixed to the sensor,
To prevent an operator from losing his/her hands during sensor installation due to movement of the arm member and rod member of the link mechanism. Further, since the block has a protruding portion fixed to the link mechanism of the sensor, the protruding portion of the block is cut off during use, and the link mechanism of the sensor can freely rotate.

[Embodiment] Fig. 1 is a front view of a vehicle height sensor showing an embodiment of a sensor mounting device having a link mechanism of the present invention;
FIG. 2 is a perspective view of the block used in this embodiment, and FIG. 4 is a perspective view of the main part of the attachment portion of the lower end of the rod member. In the drawings, the same reference numerals and symbols as those shown in the conventional example of FIG. 3 indicate the same or equivalent parts.

In the figure, the vehicle height sensor 2 is mainly connected to the rotating shaft 23.
A known sensor main body 20 that changes electrical output according to the rotation of the sensor main body 20, a bracket 21 having a mounting hole 21a for attaching the sensor main body 20 to the vehicle body side,
It consists of a cover 22 that covers a rotating shaft 23 and a part of the link mechanism 3.

The link mechanism 3 mainly includes an arm member 30 that rotates a rotating shaft 23 that serves as an input to the sensor, and a rod member 31 that is coupled to the arm member 30. The rotary shaft 23 and the arm member 30 are attached to each other by a nut 23a screwed onto the rotary shaft 23. A rod member 31 coupled to the arm member 30 is pivoted by a nut 36. More specifically, the rod member 31 is composed of a rod main body 31a, rod end members 31b and 31c screwed onto both ends thereof, and lock nuts 31d and 31e for fixing the rod end members. Therefore, to be more precise, the rod member 31 coupled to the arm member 30 has a rod end member 31b screwed onto the end of the rod body 31a;
It is pivoted by a nut 36.
The length of the rod member 31 is the length of the rod body 31a,
Rod end members 31b and 3 screwed to both ends thereof
It is determined by the screwing distance of 1c. The length of the rod member 31 is the length of the rod end members 31b and 31.
It is set by fixing c with lock nuts 31d and 31e. The rod end member 31c at the other end is inserted into an elongated hole 8b formed in a stay 8a fixed to the lower arm 8, and screwed and fixed with a not-shown rod. At this time, the long hole 8b
can absorb variations in the vertical dimension of the rod member 31 in the longitudinal direction.

The arm member 30 is provided with a small hole 30a. Further, the bracket 21 is provided with a screw hole (not shown). Before screwing the arm member 30 onto the rotation shaft 23 with the nut 23a, insert the protrusion 13 of the block 10 into the small hole 30a of the arm member 30, and then screw the arm member 30 onto the rotation shaft 23 with the nut 23a. Stop. Then, the mounting screw 12a is inserted into the oblong mounting hole 12 of the block 10 and screwed into the screw hole of the bracket 21.
At this time, the position of the rod end member 31c at the end of the rod member 31 is determined by the distance between the screw hole of the bracket 21 and the small hole 30a of the arm member 30. That is, the block main body 11 is positioned by the screwed state of the mounting screw 12a inserted into the oval mounting hole 12 of the block 10, and the rod member 31
Determine the distance of the mounting position of the end.

In a sensor having a link mechanism assembled in this manner, there is no shaking of the link mechanism when the sensor is attached, so that the operator can easily carry out the attachment work without being distracted. In addition, the vehicle height sensor of this embodiment is mounted by jacking up, and at this time, the jacking increases the relative distance between the frame and the upper arm or lower arm at which the vehicle height sensor is mounted. If the locking position of the mounting screw 12a inserted into the mounting hole 12 of the block 10 is determined so that the rod end member 31c at the end of the member 31 is positioned, the work efficiency of mounting the vehicle height sensor will be improved.

After the installation of the vehicle height sensor is completed, if the vehicle is set to the normal usage state such as releasing the jack, the protrusion 13 of the block 10 inserted into the small hole 30a of the arm member 30 will cause the arm member 30 to rotate. It is twisted and cut. Therefore, arm member 3
0 can move to the protrusion 13 of the block 10 inserted into the small hole 30a without being restricted in its rotation. Therefore, it is not necessary to remove the block 10 after the installation of the vehicle height sensor is completed.

As described above, in the above embodiment, a vehicle height sensor is used as a sensor having a link mechanism consisting of an arm member for rotating an input rotation shaft and a rod member coupled to the arm member. When implemented, the present invention is not limited to the vehicle height sensor as long as the object to be detected by the sensor rotates a rotating shaft.

Regarding the configuration of the sensor of the present invention, as shown in the present example, it does not only show the so-called sensor main body, which changes its electrical output depending on the input, but also as a unit of external appearance. , a known sensor body that changes the electrical output according to the rotation of the rotation shaft, or a sensor body and a bracket to which the sensor body is attached, or a sensor body and a bracket to which the sensor body is attached, and a rotation shaft, depending on the manner of use. The target is a cover that covers a part of the link mechanism.

Regarding the structure of the link mechanism that engages with the protruding part of the block of the present invention, in the above embodiment, the protruding part of the block and the arm member are engaged, but when implementing the present invention, However, the structure is not limited to the above structure, and the protruding portion of the block and the rod member may be engaged with each other. In the case where the former is selected, if the protrusion of the block and the arm member are engaged inside the connection point between the arm member and the rod member, a force greater than the force normally applied to the arm member will be applied to the protrusion of the block. It can be used as a cutting force for shaped parts, and the cutting force can be used effectively. However, in this case, since the rod member swings, it is preferable to use the mounting state in which the swinging does not interfere with mounting the sensor, and the mounting state in which active rotation of the arm member is required. If the latter is selected, a force greater than the force normally applied to the arm member cannot be used as a cutting force for the protrusion of the block, but since the rod member does not swing, the swing may interfere with sensor installation. Suitable when in the attached state.

Furthermore, regarding the structure of the block of the present invention, in the above embodiment, it has a block main body, an oblong mounting hole provided therein, and a protrusion, but the shape of the protrusion is such that it is difficult to apply external force to the link mechanism. Any shape is sufficient as long as it can be easily cut and the block body can be firmly attached to the sensor. Further, the material may be any material as long as it satisfies the above conditions.

[Effects of the invention] As described above, the sensor mounting device having a link mechanism of the present invention has a link mechanism that includes an arm member that rotates a rotating shaft that serves as an input of the sensor, and a rod member that is coupled to the arm member. A block is provided in which a protrusion that is easily cut off by external force is engaged, and a block body is provided with the protrusion fixed to the sensor, and a link mechanism is engaged with the protrusion of the block. When the sensor is installed, the link mechanism is fixed, and when the sensor is installed, the force applied during use cuts the protruding part of the block and releases the fixed state. It does not require any effort to release it.

[Brief explanation of the drawing]

FIG. 1 is a front view of a vehicle height sensor showing an embodiment of a sensor mounting device having a link mechanism of the present invention;
Fig. 2 is a perspective view of the block used in the embodiment shown in Fig. 1, Fig. 3 is a partial perspective view of the jack-up state showing the installation of a sensor with a conventional link mechanism, and Fig. 4 is a perspective view of the mounting portion at the lower end of the rod member. FIG. 3 is a perspective view of main parts. In the figure, 2...Sensor, 3...Link mechanism, 10...Block, 11...Block main body,
13... Protruding portion, 30... Arm member, 31...
It is a rod member. In addition, in the figures, the same reference numerals and symbols indicate the same or equivalent parts.

Claims (1)

[Claims for Utility Model Registration] (1) A sensor having a link mechanism consisting of an arm member for rotating a rotating shaft serving as an input of the sensor, and a rod member coupled to the arm member, wherein the link mechanism is easily actuated by an external force. What is claimed is: 1. A sensor mounting device having a link mechanism, characterized in that a block is disposed, the block having a protruding part that is cut into two parts, and a block body having the protruding part fixed to the sensor. (2) The sensor mounting device having a link mechanism as set forth in claim 1 of the utility model registration claim, wherein the protruding portion of the block that is easily cut off by an external force is engaged with an arm member. . (3) The sensor mounting device having a link mechanism as set forth in claim 1 of the utility model registration claim, wherein the protruding portion of the block that is easily cut off by external force is engaged with a rod member. .