Tooth rack pin, tooth rack lubricating structure and sewing machine

Abstract

The utility model discloses a tooth frame pin, tooth frame lubrication structure and sewing machine in the technical field of sewing machine, the tooth frame pin comprises a first connecting section, an eccentric section and a second connecting section which are axially and fixedly connected, an oil filling hole is formed on the tooth frame pin, the oil filling hole axially penetrates through the first connecting section and extends to the eccentric section, a grease hole is formed on the eccentric section, and the grease hole is communicated with the eccentric section. And one end of the grease hole is communicated with the oil injection hole. Lubricating grease is injected into the oil storage groove through the oil injection hole and the grease hole and sealed through the hole plug, more lubricating grease can be stored between the feed dog frame and the feed dog frame pin, the lubricating grease can be conveniently added, the stability and the long-term effect of lubrication can be guaranteed, and the sewing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a toothed pin, a toothed lubrication structure, and a sewing machine. Background Technology

[0002] When using a sewing machine for sewing, the feed teeth need to be driven by the feed teeth through the feed teeth structure to perform the feeding action.

[0003] Patent document CN111748919B discloses a toothed bracket lubrication structure, which includes a toothed bracket, a toothed bracket seat, and a toothed bracket pin. The toothed bracket pin is fixedly installed in the pin hole of the toothed bracket seat by a tightening screw. One end of the toothed bracket is sleeved on the eccentric section of the toothed bracket pin, and a grease hole is provided on the eccentric section. Lubricating grease (lubricating oil or grease) can be added to the grease hole to lubricate the rotational connection between the toothed bracket and the toothed bracket pin, so as to ensure the normal movement of the feeding action.

[0004] Existing oilless threaded pins can only store a small amount of lubricating grease, which is easily lost due to high-speed movement or prolonged use, leading to a gradual decline in lubrication effectiveness and an inability to guarantee long-term stable lubrication performance. Once the grease is depleted, it needs to be refilled, which not only affects sewing efficiency but also results in poor lubrication.

[0005] Therefore, how to achieve the stability and long-term effectiveness of lubricating greases has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0006] In view of this, the purpose of this utility model is to provide a dental cartilage lubrication structure to solve the technical problem of poor lubrication effect in existing dental cartilage lubrication structures.

[0007] The technical solution adopted by this utility model is as follows: a dental bracket pin, the dental bracket pin includes a first connecting section, an eccentric section and a second connecting section that are axially fixedly connected, an oil injection hole is formed on the dental bracket pin, the oil injection hole axially passes through the first connecting section and extends to the eccentric section, a grease hole is formed on the eccentric section, and one end of the grease hole is connected to the oil injection hole.

[0008] Preferably, an oil storage tank is formed on the eccentric section, and the oil storage tank is connected to the grease hole.

[0009] Preferably, the oil storage tank is coaxially arranged with the eccentric section, and the oil storage tank surrounds the eccentric section for one circumference.

[0010] Preferably, the grease hole is arranged along the radial direction of the eccentric section.

[0011] Preferably, the ratio of the number of oil storage tanks to the number of grease holes is 1:2.

[0012] Preferably, the plurality of oil storage tanks are spaced apart along the axial direction of the eccentric section.

[0013] Preferably, the oil injection hole, the first connecting section, and the second connecting section are coaxially arranged.

[0014] Preferably, the end of the first connecting section is formed with a mounting hole communicating with the oil injection hole, and a hole plug is installed in the mounting hole.

[0015] The second objective of this utility model is to provide a dental cartilage lubrication structure, including the aforementioned dental cartilage pin, dental cartilage seat, and dental cartilage. The dental cartilage seat has a pin hole formed therein, and the first connecting section and the second connecting section of the dental cartilage pin are fixedly installed in the pin hole. One end of the dental cartilage is rotatably connected to the eccentric section of the dental cartilage pin.

[0016] The third objective of this invention is to provide a sewing machine that includes the aforementioned toothed lubrication structure.

[0017] The beneficial effects of this utility model are:

[0018] This invention adopts an open structure, with an oil reservoir formed on the outer circumference of the eccentric section of the toothed pin and an oil injection hole formed inside the toothed pin. The oil injection hole and the oil reservoir are connected through a grease hole on the eccentric section. Lubricating grease can be added directly to the oil reservoir through the oil injection hole. The grease in the oil reservoir can fully cover the friction surface between the toothed pin and the toothed pin, effectively reducing friction and wear during movement. This not only achieves convenient addition of lubricating grease but also ensures the stability and long-lasting effect of lubrication, completely isolates external pollution, and helps improve sewing efficiency. Attached Figure Description

[0019] Fig. 1 A three-dimensional schematic diagram of a dental arch pin;

[0020] Fig. 2 Front view of the dental bracket pin;

[0021] Fig. 3 Side view of the dental bracket pin

[0022] Fig. 4 This is a schematic diagram of the dental arch lubrication structure of this utility model;

[0023] Fig. 5 This is a three-dimensional schematic diagram of the dental arch lubrication structure of this utility model;

[0024] Fig. 6 This is an exploded view of the tooth rack lubrication structure of this utility model.

[0025] Explanation of the reference numerals in the figure:

[0026] 10. Tooth bracket seat; 11. Pin hole; 12. Screw hole;

[0027] 20. Tooth bracket pin; 21. Eccentric section; 22. First connecting section; 23. Oil filling hole; 24. Grease hole; 25. Oil reservoir; 26. Mounting hole; 27. Adjusting groove; 28. Second connecting section;

[0028] 30. Dental frame; 31. Connecting hole;

[0029] 40. Hole plug;

[0030] 50. Tighten the screws;

[0031] 60. Feeding dog. Detailed Implementation

[0032] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0033] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] Examples, such as Figs. 1-4 As shown, a dental bracket pin 20 includes a first connecting section 22, an eccentric section 21, and a second connecting section 28 that are axially fixedly connected. That is, one end of the eccentric section 21 is fixedly connected to the first connecting section 22, and the other end of the eccentric section 21 is fixedly connected to the second connecting section 28.

[0037] An oil injection hole 23 is formed on the toothed pin 20. The oil injection hole 23 axially passes through the first connecting section 22 and extends to the eccentric section 21. A grease hole 24 is formed on the eccentric section 21, and one end of the grease hole 24 is connected to the oil injection hole 23.

[0038] This invention adopts an open structure. An oil injection hole 23 is formed inside the tooth holder pin 20, and a grease hole 24 is formed on the eccentric section 21 of the tooth holder pin 20. One end of the grease hole 24 communicates with the oil injection hole 23, and the other end communicates with the outer circumferential surface of the eccentric section 21. Lubricating grease can be injected into the grease hole 24 through the oil injection hole 23. When the tooth holder pin 20 and the tooth holder 30 rotate relative to each other, under the action of centrifugal force (the tooth holder seat 10 reciprocates around the feed shaft), the lubricating grease in the oil injection hole 23 and the grease hole 24 can enter the gap between the tooth holder 30 and the tooth holder pin 20. This not only achieves lubrication between the tooth holder 30 and the tooth holder pin 20 but also enables convenient addition of lubricating grease, ensuring the normal operation of the sewing work and helping to improve sewing efficiency.

[0039] Specific embodiment 1, such as Figs. 1-4 As shown, the dental bracket pin 20 includes a first connecting section 22, an eccentric section 21, and a second connecting section 28 that are axially fixedly connected. That is, one end of the eccentric section 21 is integrally formed with the first connecting section 22, and the other end of the eccentric section 21 is integrally formed with the second connecting section 28.

[0040] An oil injection hole 23 is formed on the tooth bracket pin 20. The oil injection hole 23 is formed on the first connecting section 22 of the tooth bracket pin 20 and extends along the axial direction of the tooth bracket pin 20. One end of the oil injection hole 23 passes through the first connecting section 22 and the other end of the oil injection hole 23 extends to the eccentric section 21.

[0041] At least one grease hole 24 is formed on the eccentric section 21, and one end of the grease hole 24 is connected to the oil injection hole 23, and the other end of the grease hole 24 is connected to the outer circumferential surface of the eccentric section 21, so that the lubricating grease in the oil injection hole 23 and the grease hole 24 can enter the gap between the tooth bracket pin 20 and the tooth bracket 30 under the action of pressure and centrifugal force, thereby enabling the lubricating grease to fully cover the friction surface of the eccentric section 21 and the tooth bracket 30, effectively reducing friction and wear during the movement.

[0042] Meanwhile, a plug 40 for sealing the oil injection hole 23 is installed at the end of the toothed pin 20 to prevent the lubricating grease in the oil injection hole 23 from being thrown out during operation.

[0043] Specifically, an oil injection hole 23 is formed on the toothed pin 20. The oil injection hole 23 extends along the axial direction of the toothed pin 20 and is a blind hole, that is, one end of the oil injection hole 23 is closed and the other end is open, so as to quickly inject lubricating grease into the oil injection hole 23.

[0044] A mounting hole 26 communicating with the oil injection hole 23 is formed at the end of the toothed pin 20. The radial dimension of the mounting hole 26 is larger than that of the oil injection hole 23, and the hole plug 40 is detachably fixed in the mounting hole 26 to prevent the lubricating grease in the oil injection hole 23 from being thrown out during movement.

[0045] An adjustment groove 27 is formed at the end of the dental bracket pin 20, and the adjustment groove 27 is in the shape of a straight line.

[0046] More preferably, the oil injection hole 23 is coaxially arranged with the first connecting section 22 of the toothed pin 20 to facilitate the machining and forming of the oil injection hole 23.

[0047] Specific embodiment 2, such as Figs. 1-4 As shown, the dental bracket pin 20 includes a first connecting section 22, an eccentric section 21, and a second connecting section 28 that are axially fixedly connected. That is, one end of the eccentric section 21 is fixedly connected to the first connecting section 22, and the other end of the eccentric section 21 is fixedly connected to the second connecting section 28.

[0048] An oil injection hole 23 is formed along the axial direction on the toothed pin 20, and an oil reservoir 25 and a grease hole 24 are formed on the eccentric section 21. The oil reservoir 25 is formed on the outer circumferential surface of the eccentric section 21, and the grease hole 24 is arranged along the radial direction of the eccentric section 21. One end of the grease hole 24 is connected to the oil injection hole 23, and the other end of the grease hole 24 is connected to the oil reservoir 25, so that lubricating grease can be directly added to the oil reservoir 25 through the oil injection hole 23 and the grease hole 24. The lubricating grease in the oil reservoir 25 can enter the gap between the toothed pin 20 and the toothed frame 30 under the action of pressure and centrifugal force, so that the lubricating grease can fully cover the friction surface of the eccentric section 21 and the toothed frame 30, effectively reducing friction and wear during the movement.

[0049] Meanwhile, a plug 40 for sealing the oil injection hole 23 is installed at the end of the toothed pin 20 to prevent the lubricating grease in the oil injection hole 23 from being thrown out during operation.

[0050] Preferably, the oil reservoir 25 is coaxially arranged with the eccentric section 21, and the oil reservoir 25 surrounds the eccentric section 21, so that the lubricating grease can be filled into the oil reservoir 25 relatively evenly from the oil injection hole 23 and the grease hole 24.

[0051] More preferably, the ratio of the number of oil reservoirs 25 to the number of grease holes 24 is 1:2, and the grease holes 24 are symmetrically arranged on both sides of the oil reservoir 25, so that the lubricating grease in the oil injection hole 23 is filled into the oil reservoir 25 more evenly.

[0052] Preferably, there are multiple oil reservoirs 25, such as two, and the multiple oil reservoirs 25 are distributed at intervals along the axial direction of the eccentric section 21, so that the lubricating grease in the oil reservoirs 25 can fully cover the friction surface between the eccentric section 21 and the gear frame 30, effectively reducing friction and wear during the movement.

[0053] Specific embodiment 3, such as Figs. 4-6 As shown, a toothed bracket lubrication structure includes: a toothed bracket seat 10, a toothed bracket pin 20, a toothed bracket 30, and a feed tooth 60.

[0054] A pin hole 11 is formed on the top of the dental bracket 10, and the pin hole 11 is divided into two sections.

[0055] The dental bracket pin 20 is fixedly installed in the pin hole 11.

[0056] Specifically, the first connecting section 22 and the second connecting section 28 of the tooth bracket pin 20 are fixedly installed in the two pin holes 11 in a one-to-one correspondence.

[0057] The fixed connection between the first connecting segment 22 and the dental frame seat 10 is achieved as follows:

[0058] A screw hole 12 is formed on the dental bracket seat 10. The screw hole 12 is connected to the pin hole 11, and a tightening screw 50 is installed in the screw hole 12 so as to achieve a fixed connection between the dental bracket pin 20 and the dental bracket seat 10 by tightening the dental bracket pin 20 through the tightening action of the tightening screw 50.

[0059] One end of the tooth frame 30 is formed with a connecting hole 31. The eccentric section 21 of the tooth frame pin 20 is fitted into the connecting hole 31 of the tooth frame 30, and the tooth frame 30 and the eccentric section 21 of the tooth frame pin 20 can rotate relative to each other. The other end of the tooth frame 30 is fixedly connected to the feeding tooth 60.

[0060] An example is a sewing machine that includes the aforementioned toothed lubrication structure.

[0061] The lubricating grease addition process for the dental arch lubrication structure of this utility model is as follows:

[0062] Lubricating grease is injected into the oil injection hole 23 of the tooth bracket pin 20 using a syringe. The lubricating grease is evenly filled into the oil reservoir 25 through the oil injection hole 23 and the grease hole 24. Under the action of pressure and centrifugal force, the lubricating grease in the oil reservoir 25 can fully cover the friction surface between the tooth bracket pin 20 and the tooth bracket 30, effectively reducing friction and wear during the movement.

[0063] Once the lubricating grease is filled, the plug 40 is installed in the mounting hole 26 to prevent the lubricating grease from being thrown out due to movement and to isolate it from external dust and fiber contamination.

[0064] Compared with the prior art, the present invention has at least the following technical effects:

[0065] This invention injects lubricating grease into the oil storage tank through the oil injection hole and grease hole and seals it with the hole plug, which allows more lubricating grease to be stored between the tooth frame and tooth frame pin. This not only ensures the stability and long-term effectiveness of lubrication, but also isolates external contamination and helps improve sewing results.

[0066] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A dental bracket pin, characterized in that, The tooth bracket pin (20) includes a first connecting section (22), an eccentric section (21), and a second connecting section (28) that are axially fixed. The tooth bracket pin (20) has an oil injection hole (23) formed on it. The oil injection hole (23) axially passes through the first connecting section (22) and extends to the eccentric section (21). The eccentric section (21) has a grease hole (24) formed on it, and one end of the grease hole (24) is connected to the oil injection hole (23).

2. A dental bracket pin according to claim 1, characterized in that, An oil storage tank (25) is formed on the eccentric section (21), and the oil storage tank (25) is connected to the grease hole (24).

3. A dental bracket pin according to claim 2, characterized in that, The oil storage tank (25) is coaxially arranged with the eccentric section (21), and the oil storage tank (25) surrounds the eccentric section (21) for one circumference.

4. A dental bracket pin according to claim 3, characterized in that, The grease hole (24) is arranged in the radial direction of the eccentric section (21).

5. A dental bracket pin according to claim 4, characterized in that, The ratio of the number of oil storage tanks (25) to the number of grease holes (24) is 1:

2.

6. A dental bracket pin according to any one of claims 2-5, characterized in that, Multiple oil storage tanks (25) are spaced apart along the axial direction of the eccentric section (21).

7. A dental bracket pin according to claim 1, characterized in that, The oil injection hole (23), the first connecting section (22), and the second connecting section (28) are coaxially arranged.

8. A dental bracket pin according to claim 7, characterized in that, The end of the first connecting section (22) is formed with a mounting hole (26) communicating with the oil injection hole (23), and a hole plug (40) is installed in the mounting hole (26).

9. A dental arch lubrication structure, comprising the dental arch pin as described in any one of claims 1-8, characterized in that, The tooth frame lubrication structure further includes a tooth frame seat (10) and a tooth frame (30). The tooth frame seat (10) has a pin hole (11) formed on it. The first connecting section (22) and the second connecting section (28) of the tooth frame pin (20) are fixedly installed in the pin hole (11). One end of the tooth frame (30) is rotatably connected to the eccentric section (21) of the tooth frame pin (20).

10. A sewing machine, characterized in that, Includes the dental arch lubrication structure as described in any one of claims 9.

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