JP2002160611A - Rotary brush for vehicle washing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rotary brush having improved vehicle washing workability without making a rotating shaft of the rotary brush contact protruded portions of a vehicle body and causing washing failure in recessed portions of the vehicle body. SOLUTION: The rotary brush 20 comprises brush elements 22 repetitively implanted in the rotating shaft 21 in its peripheral direction so that they are dense at the inward side of the rotating shaft 21 in its radial direction and thin at the outward side thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rotary brush for a car washer.

[0002]

2. Description of the Related Art As disclosed in Japanese Patent Application Laid-Open No. Hei 7-251720, a rotary brush having a brush element such as a flocked or non-woven cloth made of long fibers is planted around a rotary shaft. Conventional rotary brushes have a uniform length of the brush elements and a uniform density of the brush elements around the entire axis of rotation.

In a car washer, as described in Japanese Patent Application Laid-Open No. 6-247266, the contact pressure of a rotating brush following a vehicle body during washing is detected, and the rotating brush is moved up and down so that the contact pressure of the brush becomes a set value. I try to control.

[0004]

The prior art has the following problems. In order to prevent the rotating shaft of the rotating brush from hitting the projection of the vehicle body during car washing, it is necessary to increase the density of the brush elements. However, in the case of a high-density rotating brush, the contact depth with the vehicle body when generating a constant contact pressure becomes shallow (FIG. 4), and the brush elements are densely arranged on the outer peripheral side. It is difficult for the brush element to reach the deep part, which may result in unwashed residue.

Since the contact pressure of the brush and the contact depth of the brush caused by the density of the brush element have a linear relationship, the contact depth varies under a use condition giving a constant contact pressure (F ± ΔF). A increases (FIG. 4). As a result, if the planting density of the brush elements varies, and the contact pressure varies, there is a possibility that the contact depth varies greatly, causing inconvenience such as the rotating shaft hitting the vehicle body.

SUMMARY OF THE INVENTION An object of the present invention is to provide a rotating brush having good car washability without the rotating shaft of the rotating brush coming into contact with a protrusion of the vehicle body and without leaving unwashed portions in the concave portion of the vehicle body.

[0007]

According to a first aspect of the present invention, there is provided a rotary brush for a car wash in which a brush element is implanted around a rotary shaft, wherein the density of the brush element is radially inward with respect to the rotary shaft. In this case, the planting state, which is dense and coarse on the outer side, is repeated in the circumferential direction of the rotating shaft.

According to a second aspect of the present invention, when the brush element is further folded in half and the folded back portion is attached to the periphery of the rotating shaft, the length of one side and the other side of the folded side are set. By making the lengths of the brush elements different from each other, the density of the brush elements is reduced.

According to a third aspect of the present invention, in addition to the first or second aspect, the density of the brush element is changed steplessly in a radial direction with respect to a rotation axis.

[0010]

According to the first aspect of the present invention, the following effects are obtained. When the rotating brush rotates in contact with the vehicle body with a constant contact pressure, the density of the brush elements is dense on the inner side of the radius running, so that the rotating shaft hits the protrusion of the vehicle body with high density. Avoided by brush elements.

Since the density of the brush element is coarse on the outer side in the radial direction, the contact depth with the vehicle body can be increased under the use condition for realizing a constant contact pressure (FIG. 4), and the outer peripheral side As a result, the brush elements are not densely packed, and as a result, the brush elements reach the deep portion of the concave portion of the vehicle body, and do not leave unwashed portions.

Since the contact pressure of the brush and the contact depth of the brush caused by the density of the brush element form a quadratic curve relationship, the contact depth under the condition of realizing a constant contact pressure (F ± ΔF) is obtained. Can be reduced (FIG. 4). Thus, even if the planting density of the brush element with respect to the rotating shaft varies and the contact pressure varies, the variation in the contact depth can be made smaller than in the conventional example, and the inconvenience such as the rotating shaft hitting the vehicle body can be prevented.

According to the second aspect of the present invention, the following operations are provided. By installing brush elements with different folded lengths around the rotation axis, the density of the brush elements can be easily adjusted in the radial direction with respect to the rotation axis while using brush elements of the same length before planting. Can be
Manufacturability can be improved.

According to the third aspect of the present invention, the following operations are provided. By increasing the density of the brush element steplessly in the radial direction with respect to the rotation axis, the brush element can be brought into smooth contact with the vehicle body, and the cleaning performance can be improved.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a schematic view showing a rotary brush according to a first embodiment, FIG. 2 is a schematic view showing a rotary brush according to a second embodiment, FIG. 3 is a front view showing a car washer, and FIG. FIG. 4 is a diagram illustrating a contact pressure-contact depth characteristic of a brush.

(First Embodiment) (FIGS. 1, 3 and 4) As shown in FIG. 3, a car washer 10 is provided with a rotating brush 20 such as a top brush 11 and a side brush 12 on a portal running frame (not shown). The vehicle body 1 is automatically cleaned by installing a car washing liquid injection device (not shown), a drying device (not shown), and the like.

As shown in FIG. 1, the rotating brush 20 has a number of brush elements 22 implanted around a rotating shaft 21 and rotates while contacting the surface of the vehicle body 1 with a constant contact pressure. Wash. In the car washer 10, the contact pressure of the rotating brush 20 following the vehicle body 1 at the time of car washing is detected by a contact pressure detecting device (not shown), so that the contact pressure of the rotating brush 20 becomes a preset constant value. The rotary brush 20 is used for raising and lowering control so as to realize the following.

However, in the rotating brush 20, the brush element 22 is made of polyethylene, polypropylene,
A large number of planting holes 2 formed by flocking made of ethylene vinyl acetate or the like and provided at respective portions in the axial direction and the circumferential direction of the rotating shaft 21
3, a plurality of brush elements, two in this embodiment, form a set, and the brush elements 22 have the same overall length L.
A and 22B are inserted into the folded portions, and the brush elements 22A and 22B are attached around the rotating shaft 21 through the retaining threads 24 at the folded portions of the brush elements 22A and 22B. At this time, with respect to the brush element 22A, the length L1 on one side and the length L4 on the other side are made different from each other (L1 + L4 =
L), for the brush element 22B, the length L2 on one side and the length L3 on the other side are different from each other (L2 + L3 = L), and L1 to L4 are L1.
>L2>L3> L4. As a result, in the rotating brush 20, the density of the brush element 22 is increased on the radially inner side with respect to the rotating shaft 21 at the respective positions of the respective planting holes 23 of the rotating shaft 21 (the innermost circumference has a bristle implantation). 4) so that the outer side is coarse (the outermost circumference is the density of one hair transplant).
This planting state is repeated in the axial direction and the circumferential direction of the rotating shaft 21.

According to the first embodiment, the following operations are provided. When the rotating brush 20 rotates while contacting the vehicle body 1 with a constant contact pressure, the brush element 22 (22A, 22B) is rotated.
Since the density of B) is dense on the inner side of the radius running,
The contact of the rotating shaft 21 with the projection of the vehicle body 1 is avoided by the high-density brush elements 22 (22A, 22B).

The brush element 22 (22A, 22
Since the density of B) is coarse on the outer side in the radial direction,
Since the contact depth with the vehicle body 1 can be increased under the use condition to realize a constant contact pressure (FIG. 4), and the brush elements 22 (22A, 22B) are not densely arranged on the outer peripheral side.
As a result, the brush elements 22 (22A, 22B) reach the deep portion of the concave portion of the vehicle body 1, and no washing is left.

The brush element 22 (22A, 22
Since the contact pressure of the brush and the contact depth of the brush caused by the density of B) have a quadratic curve relationship, the contact depth varies under the use condition of realizing a constant contact pressure (F ± ΔF). B can be reduced (FIG. 4). Thereby, the rotating shaft 2
Even if the planting density of the brush elements 22 (22A, 22B) with respect to 1 varies and the contact pressure varies, the variation of the contact depth can be made smaller than in the conventional example, and problems such as the rotating shaft 21 hitting the vehicle body 1 can be prevented. it can.

By mounting the brush elements 22 (22A, 22B) having different folded lengths around the rotation shaft 21, the brush elements 22 (22A, 22B) having the same length are used before planting. The density of the brush element 22 (22A, 22B) is
, The density can be easily increased and decreased in the radial direction, and the productivity can be improved.

Second Embodiment (FIG. 2) The second embodiment differs from the first embodiment in that a rotating brush 30 is used instead of the rotating brush 20. As shown in FIG. 2, the rotating brush 30 is formed by implanting a large number of brush elements 32 around a rotating shaft 31, by implanting the brush elements 32, and an implanting band spirally wound around the rotating shaft 31. 33, each part in the longitudinal direction forms a set of a plurality of pieces, two pieces in this embodiment, and has a total length L
Are fixed by crimping the folded back portions of the brush elements 32A and 32B, and the brush elements 32A and 32B are mounted around the rotation shaft 31. At this time, as in the case of the rotary brush 20 of the first embodiment, the length L1 of the folded half on one side and the length L4 on the other side are different from each other (L1 +
L4 = L), for the brush element 32B, the length L2 on one side of the two-fold and the length L3 on the other side are different from each other (L2 + L3 = L), and the lengths L1 to L4
Are set so that L1>L2>L3> L4.
Thereby, in the rotating brush 30, the density of the brush element 32 at each position in the longitudinal direction of the implanted band 33 spirally wound around the rotating shaft 31 is increased inward in the radial direction with respect to the rotating shaft 31. Is dense (the innermost circumference has a density of four hair transplants), and the outer side is coarse (the outermost circumference has a density of one hair transplant).
The implantation state is repeated in the axial direction and the circumferential direction of the rotating shaft 31.

Therefore, the second embodiment has the same operation as that of the first embodiment.

The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration of the present invention is not limited to this embodiment, and the design can be changed without departing from the scope of the present invention. The present invention is included in the present invention. For example, in the practice of the present invention, the density of the brush elements can be varied from multiple steps to stepless in the radial direction with respect to the rotation axis.

Further, in the practice of the present invention, the rotating brush may be one in which a plurality of rotating brushes are formed on each part of the rotating shaft, and root portions of respective brush elements such as flocking having different total lengths are implanted. . In addition, not only flocking around the rotation axis,
A brush element such as a non-plant cloth made of long fibers may be planted.

[0027]

As described above, according to the present invention, it is possible to obtain a rotating brush having good car washability without the rotating shaft of the rotating brush coming into contact with the projection of the vehicle body and without leaving unwashed portions in the concave portion of the vehicle body. Can be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram illustrating a rotating brush according to a first embodiment.

FIG. 2 is a schematic diagram illustrating a rotating brush according to a second embodiment.

FIG. 3 is a front view showing the car washer.

FIG. 4 is a diagram showing a contact pressure-contact depth characteristic of a brush.

[Explanation of symbols]

20, 30 rotating brush 21, 31 rotating shaft 22, 22A, 22B, 32, 32A, 32B brush element

Claims (3)

[Claims] 1. A rotating brush for a car wash in which a brush element is implanted around a rotating shaft, wherein a density of the brush element is dense on an inner side in a radial direction with respect to the rotating shaft and coarse on an outer side. A rotating brush for a car washer, wherein an implanted state is repeated in a circumferential direction of a rotating shaft. 2. The brush element is folded in two, and
When installing the folded part around the rotation axis,
2. The rotating brush for a car washer according to claim 1, wherein the length of one side and the length of the other side of the folding are different from each other, so that the density of the brush element is reduced. 3. The rotating brush for a car washer according to claim 1, wherein the density of the brush element is changed steplessly in a radial direction with respect to a rotating shaft.