JP7341042B2 - V ring installation jig and V ring installation method - Google Patents

Description

The present invention relates to a V-ring assembling jig and a V-ring assembling method.

Patent Document 1 shows a motor having a V ring. The motor shaft is passed through the through hole of the flange, and the V ring seals the gap between the motor shaft and the through hole of the flange.

Japanese Patent Application Publication No. 2014-107909

Conventionally, the process of assembling a V-ring has been complicated, and skill has been required to assemble the V-ring into a target device as specified.

An object of the present invention is to provide a V-ring assembling jig and a V-ring assembling method that can easily assemble a V-ring into a target device.

The V-ring assembly jig according to the present invention includes:
A V-ring assembly jig for incorporating a V-ring into a target device,
Constructed in a cylindrical shape,
a grease application surface located on one end side for applying grease to a V ring contact position of the V ring installation surface of the target device;
a positioning surface located on the other end side and abutting the V-ring installation surface when the V-ring is installed;
a pushing surface that is located closer to the one end than the positioning surface and pushes the V ring;
Equipped with

The V ring assembling method according to the present invention includes:
A V-ring built-in jig that is configured in a cylindrical shape and includes a grease application surface located on one end side, a positioning surface located on the other end side, and a pushing surface located on the one end side with respect to the positioning surface. A method of assembling a V ring into a target device using
Apply grease to the grease-applied surface, and pass the V-ring assembly jig through the shaft of the target device with the grease-applied surface facing toward the V-ring installation surface of the target device. a step of applying grease to the V-ring installation surface in contact with the V-ring contact position;
fitting the V-ring onto the shaft;
Pass the V-ring assembly jig through the shaft with the positioning surface facing the V-ring installation surface, and bring the pushing surface into contact with the V-ring so that the positioning surface is on the V-ring installation surface. pushing the V-ring assembly jig until it abuts;
including.

According to the present invention, the V ring can be easily incorporated into the target device.

FIG. 2 is a diagram illustrating an example of a target device into which a V ring is installed. FIG. 3 is a three-sided view showing a V-ring assembly jig according to an embodiment of the present invention, in which (A) is a plan view, (B) is a side view, and (C) is a longitudinal cross-sectional view. FIG. 1 is a perspective view showing a V-ring assembly jig according to an embodiment of the present invention. FIG. 2 is an explanatory diagram of a V-ring assembling method according to an embodiment of the present invention, in which (A) is a diagram showing a first step, and (B) is a diagram showing a second step. It is an explanatory view of the V ring assembling method concerning an embodiment of the present invention, (A) is a figure showing the former stage in the 3rd process, and (B) is a figure showing the completion of the 3rd process.

Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a diagram showing an example of a target device into which a V ring is installed. The target device 100 is, for example, an electric motor with a fan, and includes a motor shaft 110, a stator section 113 fixed to a housing 112, a rotor section 114 externally fitted to the motor shaft 110, and a motor that rotates the motor shaft 110. bearings 116 and 117 that are freely held; a fan 119 that is fitted onto the motor shaft 110 to cool the device; a flange 121 that has a through hole H1 that allows one end of the motor shaft 110 to pass through the space in which the fan 119 is disposed; A V ring 30 that seals the gap between the hole H1 and the motor shaft 110 is provided. The surface of the flange 121 on the fan 119 side is the V-ring installation surface S1.

The V-ring 30 is a seal made of an elastic material such as rubber, and includes an annular base 31 that fits onto the motor shaft 110 and expands in the radial direction as it axially moves away from one end of the annular base 31 in the axial direction. It has an annular lip 32. The annular base 31 is fitted onto the motor shaft 110, and one end of the lip 32 is brought into contact with the V-ring installation surface S1 (contacted via grease, which is a lubricant), thereby connecting the through hole H1 and the motor shaft 110. The gap between the two is sealed. The V ring 30 is assembled from one end of the motor shaft 110 with the fan 119 removed. A case in which a V ring is incorporated into the target device 100 in FIG. 1 will be described below. Note that the member having the V-ring installation surface and the shaft passed through the through hole of the V-ring installation surface are not limited to the flange 121 and the motor shaft 110, but may be various members and various shafts.

FIG. 2 is a three-sided view showing a V-ring assembly jig according to an embodiment of the present invention, in which (A) is a plan view, (B) is a side view, and (C) is a longitudinal sectional view. FIG. 3 is a perspective view showing a V-ring assembly jig according to an embodiment of the present invention. In FIGS. 2(B) and 2(C), the V ring 30 is indicated by a chain double-dashed line.

The V-ring assembling jig 10 is a jig for assembling the V-ring 30 into a mechanical section having a V-ring installation surface S1 and a motor shaft 110. The V-ring assembly jig 10 has a cylindrical shape with a hollow part through which the motor shaft 110 can be inserted, and has a grease application surface 11 at one end in the direction of penetration of the hollow part, and a positioning surface 12 at the other end. , and has a pushing surface 13 on the above-mentioned side rather than the positioning surface 12 in the inner peripheral portion.

The grease application surface 11 is applied with grease and comes into contact with the V-ring installation surface S1, thereby applying grease to a predetermined position of the V-ring installation surface S1 (V-ring contact position S1a where the tip of the lip 32 comes into contact). It is a (transfer) aspect. The grease application surface 11 is ring-shaped and has a diameter corresponding to the tip of the lip 32 of the V-ring 30.

The pushing surface 13 is a surface for pushing the annular base 31 of the V ring 30 in the axial direction. The positioning surface 12 is a surface for determining the end position at which the V ring 30 is pushed into contact with the V ring installation surface S1. The pushing surface 13 is a ring-shaped surface, and the ring inner diameter of the pushing surface 13 is smaller than the outer diameter of the annular base 31 of the V ring 30, and the ring outer diameter is smaller than the outer diameter of the annular base 31 of the V ring 30. big. The axial length from the positioning surface 12 to the pushing surface 13 is equal to the axial length from one end of the annular base 31 of the V-ring 30 in the axial direction (one end on the opposite side of the lip 32) to the tip of the lip 32. Compatible.

The inner peripheral surface of the V-ring assembly jig 10 on one end side (the side where the grease application surface 11 is arranged) has an enlarged diameter portion K1 that increases in diameter toward the grease application surface 11. Note that the expanded diameter portion K1 may be an inclined surface that is inclined in the direction of increasing the diameter, or may be a stepped portion that expands in diameter, or may include such an inclined surface and a stepped portion. Good too.

In the inner peripheral portion of the V-ring assembly jig 10, there may be a minimum inner diameter portion K3 having the smallest inner diameter between the enlarged diameter portion K1 and the pushing surface 13. The minimum inner diameter portion K3 is larger than the outer diameter of the motor shaft 110. In the inner circumference of the V-ring assembly jig 10, between the pushing surface 13 and the positioning surface 12, there is a space A1 in which the V-ring 30 can be accommodated. The inner diameter of this space A1 is larger than the outer diameter of the V ring 30.

An anti-slip surface K11 such as a knurled surface is provided on the outer periphery of the V-ring assembly jig 10. The outer diameter of the grease application surface 11 side is smaller than the outer diameter of the positioning surface 12 side, and in the outer circumference of the V-ring assembly jig 10, there is a positioning surface between the grease application surface 11 side and the positioning surface 12 side. An outer periphery enlarged diameter portion K10 whose diameter increases toward the surface 12 side is provided. The outer circumferential enlarged diameter portion K10 may be an inclined surface that is inclined in the direction of increasing the diameter, or may be a stepped portion that expands in diameter, or may have a configuration that includes such an inclined surface and a stepped portion. Good too. The anti-slip surface K11 and the enlarged outer diameter portion K10 at least partially overlap. The size of the jig may be indicated on the anti-slip surface K11 by using unevenness that has an anti-slip effect.

<V ring installation method>
4 and 5 are explanatory diagrams of the V ring assembling method according to the embodiment of the present invention, in which FIG. 4(A) is the first step, FIG. 4(B) is the second step, and FIG. 5(A) 5(B) shows the stage before the third step, and FIG. 5(B) shows the stage at the completion of the third step.

The process of incorporating the V ring 30 includes the following first to third processes. In the first step, as shown in FIG. 4(A), the worker first applies (adheres) grease G to the grease application surface 11 of the V-ring assembly jig 10, and The grease application surface 11 side of 10 faces the V ring installation surface S1 side. Next, the worker moves the V-ring assembly jig 10 through the motor shaft 110 so that the motor shaft 110 is inserted into the hollow part of the V-ring assembly jig 10, and the grease application surface 11 is Bring it into contact with the V-ring installation surface S1. The position where the grease application surface 11 comes into contact corresponds to the V-ring contact position S1a where the tip of the lip 32 of the V-ring 30 comes into contact, and the grease G is transferred here. That is, grease G is applied. After sufficiently applying grease G to the V-ring contact position S1a, the worker moves the V-ring assembly jig 10 away from the V-ring installation surface S1, collects it, wipes off the grease G on the grease application surface 11, Proceed to the next process.

In the first step, since the enlarged diameter part K1 is provided on the inner circumference of the V-ring assembly jig 10, even if the inner circumference of the V-ring assembly jig 10 comes into contact with the motor shaft 110, the grease G is Adhesion to the motor shaft 110 is prevented.

In the second step, as shown in FIG. 4(B), the worker fits the V ring 30 halfway onto the motor shaft 110.

In the third step, as shown in FIGS. 5(A) and 5(B), the worker first faces the positioning surface 12 side of the V-ring assembling jig 10 toward the V-ring installation surface S1, and assembles the V-ring. The jig 10 is moved through the motor shaft 110 and the pushing surface 13 is brought into contact with the annular base 31 of the V ring 30. As it is, the worker pushes the V-ring installation jig 10 toward the V-ring installation surface S1 until the positioning surface 12 comes into contact with the V-ring installation surface S1. Then, the V ring 30 fitted onto the motor shaft 110 slides along the motor shaft 110, and moves to a position where the lip 32 contacts the V ring installation surface S1.

In the third step, since the outer circumferential enlarged diameter part K10 and the non-slip surface K11 are provided on the outer circumference of the V-ring assembling jig 10, the worker can move the V-ring assembling jig 10 toward the V-ring installation surface S1. It is easy to apply force to the V ring 30, and the V ring 30 can be pushed in smoothly.

As shown in FIG. 5(B), when the positioning surface 12 contacts the V-ring installation surface S1, the lip 32 of the V-ring 30 contacts the V-ring contact position S1a. Grease G is applied to the V-ring contact position S1a in the first step, so the V-ring 30 is placed in the specified position with the grease G interposed between the lip 32 and the V-ring contact position S1a. Incorporated. Thereafter, the worker separates the V-ring assembly jig 10 from the V-ring 30 and collects it, completing the assembly process.

As described above, according to the V-ring assembling jig 10 of the present embodiment and the V-ring assembling method using the same, the V-ring 30 is defined by applying grease G to the V-ring contact position S1a. It is possible to easily install the product up to the position shown in the figure. Therefore, the V ring 30 can be installed as specified without requiring any skill.

The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiments. For example, the grease application surface and the pushing surface are not limited to a ring-shaped flat surface, but may be in the shape of a ring with a portion of the ring missing. Further, the grease-applied surface may have an uneven surface or may have a fibrous material fixed thereon so that the grease can be easily retained. Similarly, the positioning surface is not limited to a ring-shaped plane; for example, small contact surfaces are provided at three or more points distributed in the circumferential direction, and contact at three or more points allows the V-ring assembly jig 10 to A configuration may be adopted in which the arrangement relationship with the ring installation surface S1 is determined.

Further, in the above embodiment, an example was shown in which the V ring is incorporated into the motor shaft that protrudes outward from the through hole of the flange, but the shaft in which the V ring is incorporated and the V ring installation surface are not limited to this example. Various member sides and axes may be applied. Furthermore, in the above embodiment, a motor is shown as a target device into which a V ring is incorporated, but the target device is not limited to this, and the target device may be any device in which a V ring is incorporated, such as a reduction gear or a gear motor. It may be a device. Other details shown in the embodiments can be changed as appropriate without departing from the spirit of the invention.

10 V ring assembly jig 11 Grease application surface 12 Positioning surface 13 Pushing surface K1 Expanded diameter section K10 Expanded outer diameter section K11 Anti-slip surface 30 V ring 31 Annular base 32 Lip G Grease 100 Target device 110 Motor shaft 121 Flange S1 V Ring installation surface S1a V-ring contact position H1 Through hole

Claims (4)

A V-ring assembly jig for incorporating a V-ring into a target device,
Constructed in a cylindrical shape,
a grease application surface located on one end side for applying grease to a V ring contact position of the V ring installation surface of the target device;
a positioning surface located on the other end side and abutting the V-ring installation surface when the V-ring is installed;
a pushing surface that is located closer to the one end than the positioning surface and pushes the V ring;
Equipped with
V-ring assembly jig. The inner circumferential surface on the one end side is expanded in diameter toward the grease application surface.
The V-ring assembling jig according to claim 1. The outer diameter of the grease application surface side is smaller than the outer diameter of the positioning surface side.
The V-ring assembling jig according to claim 1 or 2. A V-ring built-in jig that is configured in a cylindrical shape and includes a grease application surface located on one end side, a positioning surface located on the other end side, and a pushing surface located on the one end side with respect to the positioning surface. A method of assembling a V ring into a target device using
Apply grease to the grease-applied surface, and pass the V-ring assembly jig through the shaft of the target device with the grease-applied surface facing toward the V-ring installation surface of the target device. a step of applying grease to the V-ring installation surface in contact with the V-ring contact position;
fitting the V-ring onto the shaft;
Pass the V-ring assembly jig through the shaft with the positioning surface facing the V-ring installation surface, and bring the pushing surface into contact with the V-ring so that the positioning surface is on the V-ring installation surface. pushing the V-ring assembly jig until it abuts;
V-ring assembly method including.

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