JP2512214Y2 - Pipe fastening structure of the pipe type module wiper device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a pipe fastening structure of a pipe type module wiper device which is installed in a vehicle such as a private car, a bus, or a truck.

[Problems to be Solved by Prior Art and Invention] Generally, in this type of modular wiper device, a bracket on the side to which the wiper motor is attached and a bracket on the side to which the wiper shaft is attached are connected using a pipe material to reduce the weight and size. There are some that have been designed.

By the way, in such a case, the fastening of the pipe material to the bracket is done by using a plurality of bolts as a set, but conventionally, as shown in FIG. All 14 were screwed from the same direction with respect to the radial direction and fixedly fixed. As a result, with this product, the strength is strong when a load is applied in the bolt screwing direction, and sufficient strength can be secured, but when a load in a direction deviated from the bolt screwing direction is applied, This tendency is weak, and this tendency becomes more pronounced as the radial displacement angle becomes larger with respect to the bolt screwing direction and the force becomes more orthogonal, and in order to avoid this, additional reinforcement measures must be taken. However, there is a problem in that the structure becomes complicated and heavy.

[Means for Solving the Problems] The present invention has been made in view of the above circumstances, and was devised for the purpose of providing a pipe fastening structure of a pipe type module wiper device capable of eliminating these drawbacks. In a pipe type modular wiper device in which a first bracket to which a wiper motor is attached and a second bracket to which a wiper shaft is attached are integrally connected via a pipe material, at least one of the pipe material and each corresponding bracket are respectively In tightening and connecting each using a plurality of bolts as a set, regarding tightening of the plurality of bolts forming the set, the screwing directions of the plurality of bolts are different from each other in the radial direction of the pipe. is there.

The present invention, with this structure, can fasten the pipe and the bracket, which can withstand loads from multiple directions and have excellent strength.

[Embodiment] Next, an embodiment of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a pipe type module wiper device, in which the wiper device 1 integrally includes a first bracket 3 to which a wiper motor 2 is attached and a second bracket 5 to which a wiper shaft 4 is attached by using a pipe member 6. Further, a wiper link 8 is provided between a motor arm (not shown) provided on the motor shaft of the wiper motor 2 and a link arm 7 provided on the wiper shaft 4. The wiper link is also provided between the link arm 7 and the link arm 10 of the wiper shaft 9 provided on the first bracket 3.
11 are installed. The reciprocating swing of the link arms 7 and 10 accompanying the drive of the wiper motor 2 causes the wiper shaft 4 and
The rotation of 9 is the same as before.

The pipe member 6 for integrally connecting the two brackets 3 and 5 is integrally tightened and connected to each of the brackets 3 and 5 by using a plurality of bolts 13 (two bolts in each embodiment). However, the fastening structure is as follows.

In other words, two insertion holes 6a for mounting the pipe nuts 12 are provided at both ends of the pipe material 6 in accordance with the number of bolts forming each set, but the insertion holes 6a corresponding to these sets are provided. The pipe nuts 12 are provided at positions displaced from each other in the radial direction so as to face the directions orthogonal to each other, and the pipe nuts 12 are respectively inserted therein. That is, the tip end side of the pipe nut 12 is inserted into the insertion hole 6a of the pipe material 6, and a tool is separately screwed into the screw portion 12c of the pipe nut to crush the middle portion of the pipe material insertion portion 12b to the inner peripheral surface of the pipe material. Fold it back in a brim-like shape along the way, and
When the pipe material 6 is clamped between the 12b and the head 12a,
The pipe nut 12 is integrally fixed to the pipe member 6 in a state where it is prevented from coming off.

On the other hand, the fastening portions 3a, 5a of the first and second brackets 3, 5 to the pipe member 6 are bent and formed in a substantially L shape, and the fastening portions 3a, 5a are formed on both sides of the L shape. Are bolt holes 3 so as to correspond to the respective insertion holes 6a that are displaced in the radial direction.
b and 5b are drilled. Then, in the pipe material 6 in which the pipe nut 12 is integrally incorporated, the inner side surfaces of the fastening portions 3a and 5a are applied to the head portion 12a protruding from the outer peripheral surface of the pipe material 6 in this state. A set of bolts
The pipe member 6 and the brackets 3 and 5 are firmly fastened by screwing and tightening 13 from the brackets 3 and 5 side.

In the embodiment of the present invention constructed as described above, the two brackets 3 and 5 are connected to each other by using the pipe material 6, which is fastened to the first and second brackets 3 and 5. In the state where the pipe nut 12 is inserted and incorporated in the pipe material 6, the pipe material 6 is applied to the fastening portions 3a and 5a of the first and second brackets 3 and 5 which are bent in the L shape.
Then, it is sufficient to screw a plurality of bolts 13 forming each set from the brackets 3 and 5 side, respectively.
Two pieces are formed in each of the brackets 3 and 5, and the screwing directions of the bolts 13 forming these sets are displaced in the radial direction and are screwed in directions substantially orthogonal to each other. As a result, the fastening between the two brackets 3 and 5 and the pipe member 6 does not become weak in the direction orthogonal to the bolt screwing direction, unlike the conventional bolt tightening from the same direction. It can be reinforced enough to withstand the load from any direction.

By the way, in this embodiment, since the pipe nut installed in the pipe material is used for tightening, the pipe material is not configured so that the bolt penetrates in the radial direction. The nut that is screwed to the tip is not exposed to the outside, and when tightening the bolts,
Since the load that crushes the pipe material in the radial direction does not work, the strength of the pipe material is hardly impaired and the strength can be made strong, but it is not necessary to configure in this way and the bolt penetrates from the pipe material. It may be the one that was made.

Further, the present invention can be applied as the second embodiment shown in FIGS. 4 and 5. In other words, this is similar to the case of the first embodiment, in which the bolts 13 forming a set are screwed in a state of being shifted by 90 degrees, so that the pipe member 6 is attached to the substantially L-shaped fastening portion 3a. An arc-shaped fitting groove 3c is formed so as to be fitted, and the pipe material 6 is fitted in the fitting groove 3c and bolts are tightened to be integrally fixed.
By doing so, there is an advantage that the pipe member 6 can be supported by the contact with the cylindrical surface, and it can be mounted more firmly and stably, which contributes to the strength increase.

Further, in the present invention, the number of bolts forming a set can be set to an appropriate number such as three instead of two, but in that case, the deviation angle in the radial direction of each bolt is "180 degrees / number of bolts". By setting so as to be "," it is possible to set so as to more reliably withstand loads in multiple directions, and the strength becomes strong. At this time, since the bolt screwing direction must be multidimensional, the bracket-side fastening portion is formed into an arc shape or a cylindrical shape to cope with the multidimensional deviation of the bolt screwing direction. It is preferable to allow tightening.

[Effects] In summary, since the present invention is constructed as described above, the connection between the first bracket to which the wiper motor is attached and the second bracket to which the wiper shaft is attached is
Although it is possible to reduce the weight and size by using a pipe material, tightening of the pipe material to the bracket is performed using a plurality of bolts that form a set, but in at least one of the sets, The plurality of bolts are joined in a state where the screwing direction of the bolts is displaced in the radial direction.

As a result, at the fastening portion between the bracket and the pipe material, it is strong when the load direction is the axial direction of the bolt, as in the case where the bolt is screwed from the same direction as in the conventional case, but it is displaced from this direction. If it is a thing that is weak in terms of strength, make sure to use effectively the bolts necessary for fastening the bracket and the pipe as they are, without using separate reinforcing means. By avoiding this, it is possible to make it strong enough to withstand loads from multiple directions, and it is also possible to make it excellent in strength.

[Brief description of drawings]

FIG. 1 shows an embodiment of a pipe fastening structure of a pipe type module wiper device according to the present invention. FIG. 1 is a perspective view of the wiper device and FIG. 2 is a pipe material with a pipe nut assembled. A front view, FIG. 3 is a cross-sectional view of a joint between a bracket and a pipe material, FIG. 4 is a front view of a joint between a bracket and a pipe material showing a second embodiment, and FIGS. FIG. 4 is a sectional view taken along the lines AA, BB and CC, and FIG. 6 is a perspective view of a conventional wiper device. In the figure, 1 is a wiper device, 2 is a wiper motor, 3 is a first bracket, 4 is a wiper shaft, 5 is a second bracket, 6 is a pipe material, 12 is a pipe nut, and 13 is a bolt.

Claims (1)

(57) [Scope of utility model registration request] 1. A pipe type modular wiper device comprising a pipe bracket and a first bracket to which a wiper motor is attached and a second bracket to which a wiper shaft is attached, which are integrally connected to each other through the pipe member. When using a plurality of bolts respectively as a set to perform tightening connection, at least one of the plurality of bolt tightening forming the set is characterized in that the screwing directions of the plurality of bolts are different from each other in the radial direction of the pipe. A pipe fastening structure for a pipe type module wiper device.