JP2003311062A - Oil-feeding device for sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oil-feeding device for a sewing machine that has a new constitution wherein an injection hole is provided on an arm for a sewing machine which has an oil tank in a sewing machine bed. <P>SOLUTION: This oil-feeding device is used for such a sewing machine that has the sewing machine bed 32, the arm 34 which is erected on the top of the sewing machine bed, and a storage tank 36 which is fixed in the sewing machine bed and stores a lubricant oil. The oil-feeding device, is characterized in that the injection part 40 for replenishing the lubricant oil from the outside of the arm is provided on the arm, and at the same time, an injection path 38c which connects the injecting part with the storage tank is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oil supply device for a sewing machine having a storage tank for storing lubricating oil to be supplied to each sliding portion of the sewing machine.

[0002]

2. Description of the Related Art An example of a sewing machine having a storage tank that has been generally used in the past will be described with reference to FIG. 9. The sewing machine includes a sewing machine head 1 rotatably provided on a sewing machine table 7, and a sewing machine. A storage tank (oil pan) 4 fixed below the table 7 is provided, and the sewing machine head 1 is composed of a sewing machine bed 2 and an arm 3 erected on the sewing machine bed 2. Lubricating oil 5 is stored in the oil pan 4, and the lubricating oil 5 is supplied to each sliding portion in the sewing machine by a pump (for example, a blade pump) 6.

The oil pan 4 is provided with an oil amount upper limit line 4H and an oil amount lower limit line 4L, and the lubricating oil 5 is replenished when the oil level of the lubricating oil 5 falls below the oil amount lower limit line 4L. When replenishing, the sewing machine head 1 is tilted to expose the oil pan 4 as shown by the phantom line in FIG. 8B, and then oil is added until the oil level matches the oil amount upper limit line 4H. Since the oil pan 4 has a large capacity, it is not necessary to replenish the lubricating oil 5 frequently, but since the sewing machine head 1 is heavy, especially for a female operator, the operation of tilting the sewing machine head 1 at the time of lubrication is difficult. It becomes hard work.

For a sewing machine having such a general structure, a storage tank (oil tank) is provided in the head of the sewing machine in order to prevent oil stains on the sewing product, and a minimum necessary portion (for example, a hook portion) is provided. For example, a sewing machine called a dry type that supplies oil only is provided.

There are two types of dry type sewing machines depending on the location where an oil tank for storing lubricating oil is provided. The first type is one in which an oil tank is provided in the arm 8 as shown in FIG. 10, and the second type is one in which an oil tank is provided in the sewing machine bed as shown in FIGS. 11 and 12.

In the sewing machine of FIG. 10, a small-capacity oil tank 10 is provided on the front surface of the arm pedestal portion 8a of the arm 8. The oil tank 10 has a small injection hole 1
0a is formed. When replenishing the lubricating oil 11,
As shown in FIG. 10B, the oil bottle 12 is inserted into the injection hole 10a.
Is inserted and oil is directly injected into the oil tank 10.

The sewing machine shown in FIG. 11 has an injection portion 16 provided on the upper surface 14a of the sewing machine bed 14. The injection part 16 has an opening opening upward, and the cap 1 is inserted into this opening.
6a is attached. The oil tank 18 fixed in the sewing machine bed 14 and the injection part 16 are connected by an injection tube 20. When replenishing the lubricating oil, the cap 16a is removed, the oil bottle 12 is inserted into the opening of the injection portion 16, and the oil tank 1 is inserted through the injection tube 20.
It is a system to inject oil into 0. In the case of the illustrated sewing machine, the oil tank 18 also has an opening and a cap 18
11a is provided, and in a state where the head is tilted as shown in FIG. 11C, the cap 18a is removed and the lubricating oil can be directly injected into the oil tank 18 as well.

In the sewing machine shown in FIG. 12, an injection portion 24 is provided on the front side 22a of the sewing machine bed 22. Injection part 2
4 has an opening that opens in a direction substantially parallel to the upper surface 22b of the sewing machine bed, and a cap 24a is attached to this opening. The oil tank 26 fixed in the sewing machine bed 22 and the injection part 24 are connected by an injection tube 28. When replenishing the lubricating oil, the head is tilted as shown in FIG. 12B, the cap 24a is removed, the oil bottle 12 is inserted into the injection portion 24, and the oil tank 26 is inserted through the injection tube 28. It is a method of injecting lubricating oil into.

[0009]

In the sewing machine of FIG. 10, since the injection hole 10a of the oil tank 10 is provided on the vertical surface of the arm pedestal portion 8a, as shown in FIG. When inserting 12 into the injection hole 10a, it is necessary to make it nearly horizontal. Therefore, the injection hole 10a
There is a high possibility that oil will drip from the tip of the oil bottle 12 onto the sewing machine bed surface 9 when it is inserted into the machine and the head of the sewing machine will be soiled. Moreover, the oil tank 1 is attached to the arm 8.
Since 0 is installed, a large-capacity one cannot be placed due to space limitations, and the amount of storable lubricating oil 11 is limited. Therefore, the lubrication work for replenishment must be performed frequently.

In the sewing machine of FIG. 11, an oil tank 18 is provided in the sewing machine bed 14, but the sewing machine bed 1
Since the inside of the arm 4 can take a larger space than the inside of the arm 3, an oil tank 18 having a larger capacity than that of the oil tank 10 of FIG. 10 can be obtained. However, the opening of the injection part 16 is
Since it is provided in a direction substantially orthogonal to a, the injection part 1
When inserting the oil bottle 12 into the opening of 6, it is necessary to incline the tip of the oil bottle 12 downward. Therefore, when the oil bottle 12 is inserted into the injection section 16, oil drops onto the sewing machine bed 14. There is a possibility that it will end up.

When the cap 18a provided on the oil tank 18 is removed and the lubricating oil is directly injected into the oil tank 18, it is necessary to tilt the head and then perform the oiling work. It is heavy, especially for female operators, which causes heavy labor during lubrication.

In the sewing machine of FIG. 12 as well as the sewing machine of FIG. 11, the head is tilted before the lubrication work is performed, so that heavy labor is required during lubrication.

Further, as shown in FIGS. 11 and 12, in the case of a sewing machine having an oil tank in the sewing machine bed, there is no conventional example in which the arm has an injection hole.

The present invention has been made to solve the above problems, and an object thereof is to provide an oil supply device for a sewing machine having an injection hole in an arm in a sewing machine having an oil tank in the sewing machine bed. Especially.

Another object of the present invention is to provide an oil supply device for a sewing machine which does not require the head to be tilted during the oiling operation by means of an oil bottle and which can prevent oil from dripping from the tip of the oil bottle. Especially.

[0016]

According to the invention described in claim 1, the sewing machine bed 32, the arm 34 standing upright above the sewing machine bed, and the storage fixed in the sewing machine bed to store the lubricating oil. In an oil supply device for a sewing machine having a tank 36, an injection part 40 for replenishing lubricating oil from the outside of the arm is provided in the arm, and an injection path 38c connecting the injection part and the storage tank is provided. An oil supply device for a sewing machine is provided.

According to the second aspect of the invention, the storage tank 36 is provided inside or below the sewing machine for storing the lubricating oil.
An injection part 40 provided at a position higher than the storage tank and having an injection hole 40b for replenishing the lubricating oil from the outside of the arm 34 erected above the sewing machine bed 32; and the injection part and the storage tank. In an oil supply device for a sewing machine, which comprises an injection path 38c connecting the above parts and a supply means 38a for supplying the lubricating oil in the storage tank to at least one or more sewing machine sliding parts, an injection hole 40 of the injection part is provided in the arm. An oil supply device for a sewing machine is provided, which is open outward and obliquely upward.

According to the third aspect of the invention, the storage tank 36 is provided inside or below the sewing machine for storing the lubricating oil.
An injection part 40 provided at a position higher than the storage tank and having an injection hole 40b for replenishing the lubricating oil from the outside of the arm 34 erected above the sewing machine bed 32; and the injection part and the storage tank. In a refueling device for a sewing machine, which comprises an injecting path 38c connecting the replenishing tank and a supplying means 38a for supplying the lubricating oil of the storage tank to at least one or more sewing machine sliding parts, the installation part 34b of the injecting part is provided outside the arm. An oil supply device for a sewing machine, which is formed on the arm by a surface facing upward and obliquely upward.

According to a fourth aspect of the present invention, in the oil supply device for a sewing machine according to any of the first to third aspects, a recess 35 that is sufficiently larger than the injection portion is formed in the arm, and the inside of the recess is formed. A refueling device for a sewing machine is provided, characterized in that the installation portion is provided on one side.

According to a fifth aspect of the present invention, in the oil supply device for a sewing machine according to any one of the first to fourth aspects, an oil amount display section 44 for displaying the amount of oil in the reservoir is provided. There is provided an oil supply device for a sewing machine, wherein the oil amount display portion is arranged on the sewing machine so that the oil display can be visually recognized by an oil filler.

According to a sixth aspect of the present invention, in the oil supply device for a sewing machine according to the fifth aspect, the oil amount display portion and the injection portion are provided on the pedestal portion 34a of the arm. An oil supply device for a sewing machine is provided.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an oil supply device for a sewing machine according to the present invention will be described below.

First, a first embodiment of the present invention will be described with reference to FIGS. The sewing machine of this embodiment has a sewing machine bed 32 on which a cloth is placed and an arm 34 standing upright above the sewing machine bed 32, and an oil tank 36 is fixed in the sewing machine bed 32. Two tube joints 36a and 36b are provided at the left end of the oil tank 36, one tube joint 36a is connected to one end of an oil supply tube 38a, and the other tube joint 36b is connected to one end of a reflux tube 38b. Are connected.

The other end of the oil supply tube 38a is connected to a plunger pump (not shown), and the oil in the oil tank 36 is sucked by the operation of the pump to supply oil to at least one sliding portion (not shown). . Reflux tube 38b
The other end of the oil tank 3 is connected to a plunger pump (not shown) to replenish the oil sucked excessively by the pump operation to the oil tank 3 again.
Return to 6 The oil supply tube 38a and the plunger pump (not shown) supply at least one lubricant to the oil tank 36.
A supply means for supplying to one or more sewing machine sliding parts is configured.

Two tube joints 36c and 36d are provided at the right end of the oil tank 36, one tube joint 36c is connected to one end of an injection tube (injection path) 38c, and the other tube joint 36d. One end of a connecting tube 38d is connected to. A recess 35 having an inclined surface (installation portion) 34b is formed on the front surface of a pillar portion 34a which is a vertical portion of the arm 34, and a hole 34c is provided in the inclined surface 34b.
The injection part 40 is press-fitted and fixed therein.

The recess 35 and the slope 34b are provided at a position higher than the oil tank 36. Therefore, the injection part 4
Zero is also arranged at a position higher than the oil tank 36. Recess 3
5 is sufficiently larger than the injection part 40. The slope 34b is the arm 3
4 is a surface facing outward and obliquely upward, and is formed as an inclined surface that is low on the operator side and high on the non-operator side. The injecting section 40 is open to the outside of the arm 34 and obliquely above and to the operator side. As a method of fixing the injection part 40, other than press-fitting, screwing, adhesion, or the like may be used. Further, the injection part 40 may be integrally configured as a part of the arm 34. The other end of the injection tube 38c is
It is connected to the tube joint section 40a of the injection section 40. A cap 42 is inserted into the opening (injection hole) 40b of the injecting section 40 for the purpose of preventing dust and dirt from entering the oil tank 36.

In the present embodiment, the cap 42 of the injection part 40 is arranged in the recess 35, so that the cap 42 can be housed without protruding outside the outer shape of the arm 34. There is.

The injection part 4 on the front face of the pillar part 34a of the arm 34
An oil amount indication window (oil amount display portion) 44 is provided near 0. As shown in FIG. 3, a float case 46 is provided in the sewing machine bed 32, and a float 48 is accommodated in the float case 46. An oil amount indicating rod 48a is fixed to the float 48, and the tip portion 48 of the oil amount indicating rod 48a is fixed.
b is inserted into the oil amount indication window 44. Connection tube 38
The other end of d is the tube joint portion 4 of the float case 46.
6a. The oil amount instruction window 44 is provided with an oil amount upper limit line 44a and an oil amount lower limit line 44b.

As shown in FIG. 4, the tube joint 36d of the oil tank 36 is provided near the bottom of the oil tank 36, and the tube joint 46a of the float case 46 is the tube joint of the oil tank 36. It is positioned so as to be substantially flush with 36d, and therefore the connecting tube 38d is also disposed so as to be substantially horizontal.

In the above structure, when replenishing the oil tank 36 with lubricating oil, the cap 42 is first removed, and the lubricating oil is injected by the oil bottle 12 as shown in FIG. In the present embodiment, the slope 34b is formed as a slope that is low on the operator side and high on the non-operator side, and the injection part 40 is open to the operator side.
The tip 12a can be inserted into the opening 40b of the injection part 40 in a state where the tip 12a is inclined so as to face upward. Then, the tip end 12a of the oil bottle 12 is gradually tilted downward so that the lubricating oil is injected downward.

In this way, the opening 12b of the injection portion 40 is held with the tip 12a of the oil bottle 12 tilted upward.
Since it can be inserted into, the possibility of spilling oil during lubrication is extremely low.

By injecting the lubricating oil, the oil 37 accumulates in the oil tank 36, but the connecting tube 38d
At the same time, the oil 37 accumulates in the float case 46 via the. As shown in FIG. 4, the tube joint portion 36d of the oil tank 36 and the tube joint portion 46a of the float case 46 are located on substantially the same plane, and the connecting tube 38d is arranged substantially horizontally. Therefore, by injecting the oil from the injecting section 40, as shown in FIG. 4, the oil surface 37a of the oil tank 36 and the float case 46 is formed.
Have almost the same height.

When oil flows into the float case 46, the buoyancy of the float 48 causes the tip 48b of the oil amount indicating rod 48a.
Rises. The operator injects oil until the tip portion 48b coincides with the oil amount upper limit line 44a of the oil amount instruction window 44.

The oil in the oil tank 36 is reduced by the operation of the sewing machine, and the tip portion 48b of the oil amount indicating rod 48a is lowered accordingly. Then, when the tip portion 48b coincides with the oil amount lower limit line 44b of the oil amount instruction window 44, the oil is replenished by the above procedure again.

In this embodiment, the oil quantity indication window 44
Since the injection part 40 is provided in the vicinity of, the oil can be injected while confirming the position of the oil amount indicating rod 48a at the time of replenishing the oil, so that workability is good. Further, since it is not necessary to tilt the sewing machine head during the lubrication work, the load on the operator can be reduced.

In the above first embodiment, the arm 3
No. 4, the pedestal portion 34a, the slope 34b, the hole 34c, the recess 3
5, an example in which the injection part 40 and the like are provided is shown, but the pedestal part 34a
Not limited to the front surface, it may be provided anywhere on the arm 34.

FIG. 6 shows the second embodiment. In this embodiment, the slope 134 is formed on the upper surface 34d of the arm 34.
b, a hole 134c, a recess 135, an injection part 140, and the like are provided. The slope 134b, the recess 135, the hole 134c,
The tube joint portion 140a, the cap 142, and the like include the inclined surface 34b, the concave portion 35, the hole 34c,
It has the same shape as the tube joint portion 40a and the cap 42.

FIG. 7 shows the third embodiment. In this embodiment, the sloped surface 2 is formed on the side surface 50a of the pulley cover 50.
34b, a hole 234c, a recess 235, and an injection part 240 are provided. The slope 234b, the recess 235, the hole 234
c, tube joint section 240a and cap 24
2 and the like are slopes 34b, holes 34c, and recesses 3 of the first embodiment.
5, the tube joint portion 40a and the cap 42 have the same shape.

FIG. 8 shows another embodiment of the present invention. In FIG. 8A, an injection portion 340 having an injection hole 340b opened obliquely upward to the right in the drawing is provided on the vertical surface of the arm pedestal portion 34a. ing.

The left view of FIG. 8B shows the arm pedestal portion 3.
4a is provided with a recessed portion 435, and an injection portion installation portion 434b is formed in the recessed portion 435 toward the upper right in the drawing.
An injection portion 440 having an injection hole 440b opened upward in the vertical direction is provided at 34b. Here, the right diagram of FIG. 8 (b) shows a front view of the example shown in the left diagram toward the sewing machine arm pedestal portion 34a. The injection hole 440b
As mentioned above, it opens upward in the vertical direction,
For convenience of description, the figure shows an ellipse. In this example, the injection hole 440b is opened upward in the vertical direction as described above, and the installation portion 434b is formed by two surfaces (434b, 434b) forming a valley in the center of the recess 35. According to this, the lubricating oil dripping above the injection portion 440 also flows down the valley portion formed by the two surfaces and flows into the injection hole 440b provided at the center of the installation portion 434b, so that the sewing machine arm is soiled. You can reduce the situation. Further, since the lower end of the recess 435 is formed in a V shape, the nozzle of the oil bottle is guided in the V shape at the time of refueling, and the tip of the oil bottle is placed at the installation portion 4.
It can be easily located in the center of 34b, that is, in front of the injection hole 440b. Although the installation portion 434b is formed with two surfaces here, it may be formed with two or more surfaces. Further, the surface forming the installation portion is not limited to a flat surface, but may be a curved surface or the like.

Although the present invention has been described based on the embodiment shown in the drawings, the present invention is not limited to this embodiment and can be variously modified. For example, although an example in which the oil tank 36 that stores the lubricating oil is provided in the sewing machine bed 32 is shown, an oil tank is provided inside the arm 34, and the oil tank is connected to the tube joint section of the injection section via the injection tube. You may connect.

[0042]

According to the first aspect of the invention, there is provided a sewing machine having a sewing machine bed, an arm erected above the sewing machine bed, and a storage tank fixed in the sewing machine bed for storing lubricating oil. In the oil supply device, the arm is provided with an injection part for replenishing the lubricating oil from the outside of the arm, and the injection path connecting the injection part and the storage tank is provided. Therefore, in the sewing machine having the storage tank in the sewing machine bed, An oil supply device for a sewing machine having a novel structure in which an injection part is provided on an arm is provided. Further, it is not necessary to tilt the head during the oiling work by the oil bottle, and the load on the operator can be reduced.

According to the invention described in claim 2, a storage tank provided inside or below the sewing machine for storing the lubricating oil,
An injection part having an injection hole for replenishing the lubricating oil from the outside of the arm erected above the sewing machine bed and provided at a position higher than the storage tank, and an injection path connecting the injection part and the storage tank, In an oil supply device for a sewing machine, which comprises a supply means for supplying lubricating oil in the storage tank to at least one or more sewing machine sliding parts, an injection hole of the injection part is opened outside and obliquely above the arm. Therefore, it is not necessary to tilt the head at the time of oiling work by the oil bottle, and it is possible to prevent the oil from dripping from the tip of the oil bottle.

According to the invention described in claim 3, a storage tank provided inside or below the sewing machine for storing the lubricating oil,
An injection part having an injection hole for replenishing the lubricating oil from the outside of the arm erected above the sewing machine bed and provided at a position higher than the storage tank, and an injection path connecting the injection part and the storage tank, A supply device for supplying lubricating oil of the storage tank to at least one or more sewing machine sliding parts, wherein a mounting part of the injection part is provided outside the arm and obliquely upward. Since it is formed on the arm, it is not necessary to tilt the head at the time of the oiling work by the oil bottle, and it is possible to prevent the oil from dripping from the tip of the oil bottle.

According to the invention described in claim 4,
In the oil supply device for a sewing machine according to any one of 4 above, since a recess sufficiently larger than the injection portion is formed in the arm and the installation portion is provided inside the recess, a protrusion from the machine frame to the outside is formed. The installation part and the injection part can be arranged without doing so.

According to the invention of claim 5, claim 1
In the oil supply device for a sewing machine according to any one of to 4, since an oil amount display unit for displaying the amount of oil in the storage tank is provided, and the oil amount display unit is disposed on the sewing machine in a manner that can be visually recognized by a fuel filler, When replenishing the lubricating oil, it is possible to inject the oil while visually recognizing the oil amount display portion, so that it is possible to provide a sewing machine with good workability.

According to the sixth aspect of the invention, in the sewing machine oil supply apparatus according to the fifth aspect, since the oil amount display portion and the injection portion are provided on the pedestal portion of the arm, the injection portion and the oil portion are provided. Since the quantity display section is arranged in the vicinity, the workability when replenishing the lubricating oil is further improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a sewing machine frame of a first embodiment of an oil supply device for a sewing machine according to the present invention by imaginary lines.

FIG. 2 is a perspective view showing an external configuration of the first embodiment.

FIG. 3 is a partial front view of the first embodiment.

FIG. 4 is a front view of the first embodiment.

FIG. 5 is a partial cross-sectional view of the first embodiment.

FIG. 6 is a perspective view showing an external configuration of a second embodiment of an oil supply device for a sewing machine according to the present invention.

FIG. 7 is a perspective view showing an external configuration of a third embodiment of a machine oil supply device according to the present invention.

FIG. 8 is an explanatory view showing another embodiment of the oil supply device for the sewing machine according to the present invention.

FIG. 9 shows an oil supply device for a sewing machine according to a conventional example,
(A) is a front view and (b) is a side view showing the head before and after being tilted.

10A and 10B are views showing an oil supply device for a sewing machine according to another conventional example, wherein FIG. 10A is a front view and FIG. 10B is an enlarged perspective view of a main part.

FIG. 11 shows a sewing machine oil supply device according to still another conventional example, in which (a) is a side view, (b) is an enlarged front view of a main part, and (c) is a state in which the head is tilted. It is a side view.

12A and 12B show a refueling device for a sewing machine according to still another conventional example, in which FIG. 12A is a side view, and FIG.

[Explanation of symbols]

32 sewing machine bed 34 Arm 34b slope (installation part) 35 recess 36 Oil tank (storage tank) 38a Oil supply tube (supply means) 38c Injection tube (injection route) 40 injection part 40b opening (injection hole) 44 Oil quantity indication window (oil quantity display section) 134b slope 135 recess 140 injection holes 234b slope 235 recess 240 injection holes

Claims (6)

[Claims] 1. A lubricating oil supply device for a sewing machine, comprising: a sewing machine bed; an arm standing above the sewing machine bed; and a storage tank fixed in the sewing machine bed for storing lubricating oil. An oil supply device for a sewing machine, wherein an injection portion for replenishing the oil is provided in the arm, and an injection path connecting the injection portion and a storage tank is provided. 2. A storage tank having a storage tank provided inside or below a sewing machine for storing lubricating oil, and an injection hole for replenishing the lubricating oil from the outside of an arm erected above the sewing machine bed. A sewing machine comprising: an injection part provided at a higher position; an injection path connecting the injection part and a storage tank; and a supply means for supplying lubricating oil of the storage tank to at least one or more sewing machine sliding parts. The oil supply device for a sewing machine, wherein an injection hole of the injection part is opened outward and obliquely upward of the arm. 3. A storage tank having a storage tank provided inside or below a sewing machine for storing lubricating oil, and an injection hole for replenishing the lubricating oil from the outside of an arm erected above the sewing machine bed. A sewing machine comprising: an injection part provided at a higher position; an injection path connecting the injection part and a storage tank; and a supply means for supplying lubricating oil of the storage tank to at least one or more sewing machine sliding parts. In the oil supply device, the installation part of the injection part is formed on the arm by a surface facing outward and obliquely upward of the arm. 4. The oil supply device for a sewing machine according to claim 1, wherein the arm has a recess sufficiently larger than the injection part,
An oil supply device for a sewing machine, wherein the installation portion is provided inside the recess. 5. The oil supply device for a sewing machine according to any one of claims 1 to 4, wherein an oil amount display section for displaying the amount of oil in the storage tank is provided, and the oil amount display section is visually recognized by a refueling person. An oil supply device for a sewing machine, which is arranged on a sewing machine as much as possible. 6. The oil supply device for a sewing machine according to claim 5, wherein the oil amount display portion and the injection portion are provided on a pedestal portion of the arm.