JP3174644U - Lubricating mechanism for vertical hook for sewing machine - Google Patents

Abstract

An oil supply mechanism for a vertical hook for a sewing machine is provided.
An oil supply mechanism for a vertical hook for a sewing machine includes an outer hook, a first oil absorbing member, a second oil absorbing member, and an inner hook, and an accommodation space recessed inward is formed on one side of the outer hook, A track is formed at the outer edge periphery of the storage space, a first oil storage groove is provided on the inner end bottom side of the storage space, a lid is provided at an opening portion of the first oil storage groove, An oil injection hole is provided, a sealed channel is provided on the inner wall of the first oil storage groove, and a second oil storage groove is provided on the track of the housing space, and the second oil storage groove communicates with the sealed channel. The first oil absorbing member is provided in the first oil storage groove, and the second oil absorbing member is provided in the second oil storage groove. The inner hook is movably combined with the outer hook raceway. Thereby, the track between the inner hook and the rotating outer hook can maintain lubrication and lubrication and control the amount of oil discharged for a relatively long period of time.
[Selection] Figure 5

Description

  The present invention relates to an oil supply mechanism of a kind of vertical hook for a sewing machine, and particularly refers to a combination design of an outer hook, a first oil absorbing member, a second oil absorbing member, and an inner hook, between the inner hook and the rotating outer hook. The present invention relates to an oil supply mechanism for various vertical hooks or a similar structure that can maintain oil absorption lubrication for a relatively long period of time on a contact track and can control the oil output amount.

  As shown in FIGS. 1 and 2, the known oiling mechanism of the vertical hook for a sewing machine includes an outer hook 1 and an inner hook 2 (see FIGS. 1 and 2), A recessed receiving space 3 is formed, a track 4 is provided on the outer peripheral edge of the recessed receiving space 3, a channel 5 is provided on the inner end side of the recessed receiving space 3, and the channel 5 Is communicated with the bottom of the back surface of the outer pot 1 and is used for injecting lubricating oil. A circular sheet metal member (not shown) is provided at the front end of the channel 5 by pressure processing, and the injected lubricating oil is directly It is prevented from flowing into the accommodating space 3 recessed inward. The channel 5 is connected to the guide groove 6 on the inner end side of the receiving space 3 recessed in the inside, and the other end of the guide groove 6 is connected to the track 4. At this time, the inner hook 2 is further combined with the track 4 of the outer hook 1, and the inner hook 2 is fixed at an angle and does not rotate, so that the outer hook 1 is injected into the bottom by centrifugal force generated by high-speed rotation. The lubricated oil passes through the channel 5 and the guide groove 6 and flows into the raceway 4 of the outer hook 1, whereby the lubricating oil is applied to the contact peripheral edge between the inner pot and the outer pot, A lubricating effect between the hook 1 and the inner hook 2 is provided. However, even though the known vertical hook oil supply mechanism has the above-mentioned lubricating effect, when it is actually used, if the amount of dripping oil becomes excessive, the lubricating oil will flow out of the guide groove 6 and contaminate the bobbin sewing thread. However, if the amount of dripping oil is too small, the lubricating oil must be replenished regularly, increasing the work process, reducing the efficiency of the overall operation of the sewing machine inconvenience, and therefore waiting for improvement in use. But there was.

  The main object of the present invention is to provide an oil supply mechanism of a kind of vertical hook for a sewing machine, which is a combination of an outer hook, a first oil absorbing member, a second oil absorbing member and an inner hook, A housing space recessed inwardly is formed on one side of the outer hook, a track is formed on the outer peripheral edge of the recessed housing space, and a first oil storage groove is formed on the inner end side of the recessed housing space. Is formed, and a lid is provided at an opening portion of the first oil storage groove, the cover body is a sheet metal member and is fitted into the front end of the first oil storage groove on one side of the housing space, and The lid is provided with an oiling hole, and the oiling hole must be close to the center point of the outer hook because of the centrifugal force generated by the high-speed rotation of the outer hook, thereby Oil spillage is prevented, and the inner wall of the first oil storage groove is provided with a sealed channel. A second oil storage groove is provided, the second oil storage groove communicates with the sealed channel, the first oil absorbing member is provided in the first oil storage groove, and the second oil absorbing member is Provided in the second oil storage groove, the inner hook is movably combined with the track of the outer hook, and when the vertical hook is operated, the outer hook rotates at a high speed, thereby the first oil storage by centrifugal force. Lubricating oil stored in the first oil absorbing member of the groove passes through the channel and is introduced into the second oil absorbing member of the second oil storage groove, and both the first oil absorbing member and the second oil absorbing member described above are used. It has a function of adsorbing and filtering the lubricating oil, and finally, a small amount of lubricating oil flows out from the second oil absorbing member of the second oil storage groove, and at this time, the inner hook is further movably movable. Since the angle of the inner hook is fixed and does not rotate, the outer hook rotates at a high speed, so that the lubricating oil is applied to the contact edge between the inner hook and the outer hook. It is no longer necessary to replenish the lubricating oil on a regular basis, which can maintain the lubrication function for a relatively long oiling period and greatly increase the practicality and convenience of the overall operation of the vertical hook in the sewing machine. And

  The next object of the present invention is to provide an oil supply mechanism of a kind of vertical hook for a sewing machine, which is designed so that the second oil storage groove is provided as close to the sword tip as possible so that the lubricating oil can be effectively used in a wide range. It is assumed that the utility of the overall lubrication of the present invention is increased.

  Another object of the present invention is to provide an oil supply mechanism for a kind of vertical hook for a sewing machine, in which the first oil storage groove is installed in a horizontal direction, and the first oil storage groove is provided due to a large amount of oil discharge. The oil storage groove can be installed obliquely, and has a function of controlling the amount of oil discharge generated by centrifugal force more favorably due to the change in the horizontal inclination angle of the first oil storage groove. This prevents the yarn from being contaminated, thereby increasing the overall utility of the present invention.

  Another object of the present invention is to provide an oil supply mechanism for a vertical hook for a sewing machine, which is provided with an additional at least one first oil storage groove on the inner end side of the accommodation space recessed therein. The outer hook is provided with a plurality of first oil storage grooves, and the first oil storage grooves communicate with each other through pipes, so that the total amount of oil storage is greatly increased. Maintain and greatly improve the overall practicality and convenience.

  Another object of the present invention is to provide an oil supply mechanism for a vertical hook for a sewing machine, which is provided with a lubrication hole in the lid at the front end of the first oil storage groove by a positioning mechanism that is originally provided in the outer hook of the sewing machine. When the sewing machine operation is stopped, due to the different mechanical structure of the inner hook, the depression angle between the outer hook center point and the center line of the lubrication hole closest to the blade tip and the outer hook center point and the blade tip connection line are On the rotating arc surface, the angle is limited to within 65 to 90 degrees, preferably within the range of 75 to 78 degrees, thereby improving the efficiency and convenience of lubricating oil replenishment according to the present invention.

  In order to achieve the above object, the present invention provides a kind of vertical hook oil supply mechanism for a sewing machine, which is composed of a combination of an outer hook, a first oil absorbing member, a second oil absorbing member and an inner hook. A housing space recessed inwardly is formed on one side of the outer hook, a track is formed on the outer peripheral edge of the recessed housing space, and a first oil storage groove is formed on the inner end side of the recessed housing space. Is formed, and a lid is provided at an opening portion of the first oil storage groove, the cover body is a sheet metal member and is fitted into the front end of the first oil storage groove on one side of the housing space, and The lid is provided with an oiling hole, and the oiling hole must be close to the center point of the outer hook because of the centrifugal force generated by the high-speed rotation of the outer hook, thereby Oil spillage is prevented, and the inner wall of the first oil storage groove is provided with a sealed channel. A second oil storage groove is provided, the second oil storage groove communicates with the sealed channel, the first oil absorbing member is provided in the first oil storage groove, and the second oil absorbing member is Provided in the second oil storage groove, the inner hook is movably combined with the track of the outer hook, and when the vertical hook is operated, the outer hook rotates at a high speed, thereby the first oil storage by centrifugal force. Lubricating oil stored in the first oil absorbing member of the groove passes through the channel and is introduced into the second oil absorbing member of the second oil storage groove, and both the first oil absorbing member and the second oil absorbing member described above are used. It has functions of adsorbing and filtering lubricating oil, and the inner hook is movably combined with the track of the outer hook.

  As a result, a long lubrication period can be maintained between the inner hook and the outer hook, which greatly increases the practicality and convenience of the overall operation of the vertical hook in the sewing machine.

It is a three-dimensional exploded view of the oil supply mechanism parts of a known vertical hook for a sewing machine. It is a top view of the outer hook of the oil supply mechanism of the well-known vertical hook for sewing machines. It is a three-dimensional external view of the first embodiment of the present invention. It is a three-dimensional exploded external view of the first embodiment of the present invention. 1 is a cross-sectional view of a first embodiment of the present invention. It is an outer hook sectional view of the 2nd example of the present invention. It is an outer hook sectional view of the 3rd example of the present invention. It is an outer pot top view of 4th Example of this invention. It is a display figure of the stop angle restriction | limiting range of the oil supply hole of this invention. It is a display figure of the preferable Example of the stop angle of the oil supply hole of this invention.

  In order to describe in detail the technical contents, structural features, and objects to be achieved of the present invention, examples will be described below in combination with the drawings.

  As shown in FIGS. 3 to 5, the present invention is a kind of vertical hook oil supply mechanism for a sewing machine, and the vertical hook oil supply mechanism includes an outer hook 10, a first oil absorbing member 20, a second oil absorbing member 30, and an inner oil supply mechanism. A kettle 40 is included.

  The outer hook 10 is formed with an accommodation space 11 recessed inward on one side, and a track 111 is formed on the outer periphery of the accommodation space 11 recessed therein, and the inner end of the accommodation space 11 recessed in the inside. A first oil storage groove 12 is provided on the side, and a lid body 13 is provided at an opening of the first oil storage groove 12. The lid body 13 is a sheet metal member and is a part of the accommodation space 11 that is recessed therein. Is inserted in the front end of the first oil storage groove 12 on the side, and an oiling hole 131 is provided in the lid body 13. The oiling hole 131 is a center of the outer hook 10 because of the centrifugal force generated by the high-speed rotation of the outer hook 10. It must be installed close to the point, thereby preventing the overflow of lubricating oil. The inner wall of the first oil storage groove 12 is provided with a sealed channel 14, and the corresponding second oil storage groove 15 is provided on one side of the track 111 of the accommodating space 11 recessed therein. The oil storage groove 15 communicates with the sealing channel 14. Among them, a sword tip 17 is formed on one side of the outer hook 10, the second oil storage groove 15 is installed near the sword tip 17, and the first oil storage groove 12 is installed in the horizontal direction.

  The first oil absorbing member 20 is made of fiber or other oil absorbing material, and is provided in the first oil storage groove 12.

  The second oil absorbing member 30 is a fiber or other oil absorbing material, and is provided in the second oil storage groove 15.

  The inner hook 40 is movably combined with the track 111 of the outer hook 10.

  When the vertical hook of the present invention operates, the outer hook 10 rotates at a high speed, whereby the lubricating oil in the first oil absorbing member 20 of the first oil storage groove 12 passes through the sealing channel 14 by centrifugal force. Is introduced into the second oil absorbing member 30 of the second oil storage groove 15, and both the first oil absorbing member 20 and the second oil absorbing member 30 described above have a function of adsorbing and filtering lubricating oil.

  Further, as shown in FIGS. 5 to 5b, the first oil storage groove 12 is installed in the horizontal direction, and can be installed obliquely depending on the amount of oil discharge. Due to the change in the inclination angle of the direction, there is a good control effect of the amount of lubricating oil generated by centrifugal force. When the first oil storage groove 12 is inclined upwards (second embodiment of the present invention, see FIG. 5a), a good embodiment is about 3 degrees, helping to increase oil output. It becomes. When the first oil storage groove 12 is inclined downward (this is the third embodiment of the present invention, see FIG. 5b), a good embodiment is about 2 degrees, which can reduce the oil output amount, Prevents yarn contamination or premature drainage of lubricant due to excessive oil output.

  In addition, the above-described sealed channel 14 can be closed with fibers or other oil absorbing material, thereby further reducing oil discharge amount.

  In addition, please refer to FIG. 6 (fourth embodiment of the present invention), in which at least one first oil storage groove 12 is further provided at the inner end of the accommodation space 11 recessed in the housing space 11. The first oil storage grooves 12 are provided, and the first oil storage grooves 12 are connected to each other through a pipe line that communicates with the first oil storage grooves 12, thereby increasing the total oil storage amount.

  The oil supply mechanism of the vertical hook for a sewing machine of the present invention configured as described above is as shown in FIGS. 3 to 8. The features of the present invention are the outer hook 10, the first oil absorbing member 20, the second oil absorbing oil. Due to the combination design of the member 30 and the inner hook 40, the lubricating oil is injected from the oil injection hole 131 of the lid 13, and the lubricating oil is contained in the first oil absorbing member 20 of the first oil storage groove 12 and the second oil storage groove. When the vertical hook operates, the outer hook 10 rotates at a high speed when it is absorbed and stored in the second oil absorbing member 30, so that the centrifugal force causes the first oil storing groove 12 to enter the first oil absorbing member 20. The stored lubricating oil passes through the sealing channel 14 into the second oil storage member 30 of the second oil storage groove 15 and finally flows out from the second oil absorption member 30 of the second oil storage groove 15. Further, the inner hook 40 is movably combined with the track 111 of the outer hook 10 so that the angle of the inner hook 40 is fixed. Since the outer hook 10 is rotated at high speed, the lubricating oil is applied to the peripheral edge where the inner hook 40 and the outer hook 10 are in contact with each other, and has a lubricating action, so that it is not necessary to replenish the lubricating oil regularly. Thereby, the lubrication effect can be maintained for a long time. The second oil storage groove 15 is installed near the sword tip 17, and the oil supply outlet starts to approach the contact point along the rotation direction, so that the lubricating oil is effectively averaged on the track 111 of the outer hook 10. Distributed. Further, the first oil storage groove 12 can be installed in an inclined manner in accordance with the necessity of the oil discharge amount, in addition to being installed in the horizontal direction. When the first oil storage groove 12 is provided so as to be inclined upward (see the display diagram of FIG. 5a), the preferred embodiment is about 3 degrees to help increase the oil output. When the first oil storage groove 12 is provided so as to be inclined downward (refer to the display diagram of FIG. 5b), the preferred embodiment is set to about 2 degrees, which helps to reduce the oil discharge amount, thus providing the oil discharge amount control function. Achieve. Therefore, it is possible to prevent the yarn from being polluted due to excessive oil output or the lubricant oil from flowing out too early. In addition, at least one first oil storage groove 12 is further provided at the inner end of the housing space 11 that is recessed in the housing space 11, and each of the first oil storage grooves 12 is provided. A pipe line 16 that communicates between the grooves 12 is provided, whereby the total oil storage amount is greatly increased, and the lubricating effect is maintained for a relatively long time. Further, due to the positioning mechanism inherent to the outer hook 10 of the sewing machine, the lubrication hole 131 of the lid 13 at the front end of the first oil storage groove 12 is inserted into the lubrication hole 131 by the different mechanical structure of the inner hook 40 when the sewing machine operation is stopped. And the depression angle between the center line of the lubrication hole 131 closest to the sword tip 17 and the center point of the outer hook 10 and the connection line of the sword tip 17 are within 65 to 90 degrees on the rotating arc surface (see FIG. 7), preferably limited to a range of 75 to 78 degrees (see FIG. 8), thereby improving the efficiency and convenience of the lubricating oil replenishment of the present invention. Due to the functions described above, the present invention has the effect of maintaining the lubrication and lubrication for a relatively long period of time between the inner hook 40 and the outer hook 10 and increasing the overall practicality and convenience. ing.

DESCRIPTION OF SYMBOLS 10 Housing space 111 recessed in outer hook 11 Track 12 1st oil storage groove 13 Lid 131 Oil supply hole 14 Sealing channel 15 2nd oil storage groove 16 Pipe line 17 Blade tip 20 1st oil absorption member 30 2nd oil absorption member 40 In Kettle

Claims (5)

In the lubrication mechanism of the vertical hook for sewing machine,
An outer hook is formed with an accommodation space recessed inward on one side of the outer hook, and a track is formed at the outer peripheral edge of the recessed accommodation space, and the inner end of the accommodation space recessed in the inner pot. A first oil storage groove is formed on the side, and a lid is provided at an opening portion of the first oil storage groove. The lid is a sheet metal member and is a first oil storage on one side of the accommodation space that is recessed inside. An oil filling hole is provided in the front end of the groove, an oil injection hole is provided in the lid body, a sealed channel is provided in the inner wall of the first oil storage groove, and a second accumulation corresponding to one side of the track of the accommodation space recessed in the other. An oil groove is provided, the second oil storage groove communicates with the sealing channel, a sword tip is formed on one side of the outer hook, and the second oil storage groove is provided close to the sword tip. A kettle,
The first oil absorbing member, the first oil absorbing member being a fiber material and provided in the first oil storage groove;
A second oil absorbing member, the second oil absorbing member being a fiber material and provided in the second oil storage groove;
An inner hook that is movably associated with the track of the outer hook; and
An oil supply mechanism for a vertical hook for a sewing machine, characterized in that   2. An oil supply mechanism for a vertical hook for a sewing machine according to claim 1, wherein the first oil storage groove is installed in a horizontal direction.   2. The oil supply mechanism for a vertical hook for a sewing machine according to claim 1, wherein the first oil storage groove is installed obliquely, and the first oil storage groove is installed so as to incline upward 3 degrees, or 2 downward. An oil supply mechanism for a vertical hook for a sewing machine, which is installed so as to be inclined at an angle.   An oil supply mechanism for a vertical hook for a sewing machine according to claim 1, wherein at least one first oil storage groove is added to an inner end of the accommodation space recessed in the sewing machine, and a plurality of first oil storage grooves are provided. An oil supply mechanism for a vertical hook for a sewing machine, characterized in that a pipe line communicating between the first oil storage grooves is provided.   2. An oil supply mechanism for a vertical hook for a sewing machine according to claim 1, wherein a connecting line between the center point of the outer hook and the center of the oil supply hole closest to the sword tip, and a depression angle between the center point of the outer hook and the connecting line of the sword tip Is limited to 65 degrees to 90 degrees or 75 degrees to 78 degrees on the rotating arc surface.

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