Sealing and oiling structure of sewing equipment

Abstract

A sealed oiling structure for sewing equipment. This primarily addresses the current problem of the lack of a reliable oiling structure in sewing equipment. Its features include: an oil box (2) mounted on the housing; a pump located within the sealed cavity and connected to the oil box; an oil outlet (4) connected to the pump for adding oil to the upper and / or lower shafts; and an oil return port (14) located within the sealed cavity and connected to the oil box. This utility model provides a sealed oiling structure for sewing equipment. By setting up an oil box, oil is poured onto the upper and lower shafts, and excess oil returns to the oil box to form a circulation, facilitating use.

Description

Technical Field

[0001] This utility model relates to the field of sewing equipment, specifically to a sealing and oiling structure for sewing equipment. Background Technology

[0002] Chinese patent CN101314900A discloses a sealed transmission structure for a sewing machine, which immerses the upper and lower shafts of the sewing machine in lubricating oil in a sealed chamber. However, this structure is not completely sealed during use, and the lubricating oil will gradually decrease and it is inconvenient to add oil. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a sealing and oiling structure for sewing equipment, which mainly solves the problem that there is no reliable oiling structure for current sewing equipment.

[0004] The technical solution of this utility model is as follows: A sealing and lubrication structure for sewing equipment includes a housing, within which a sealing cavity, an upper shaft, and a lower shaft are provided. Part of the upper shaft is disposed within the sealing cavity, and part of the lower shaft is disposed within the sealing cavity. It also includes... Oil box, installed on the housing; The pump is connected to the oil box; An oil outlet nozzle, connected to the pump, is used to add oil to the upper shaft and / or the lower shaft; The oil return port is located in a sealed chamber and communicates with the oil box.

[0005] The housing is provided with an upper viewing window, and the oil outlet is positioned facing the upper viewing window.

[0006] The housing has several walls that enclose to form the sealed cavity. Each wall has a through hole, and a bushing with a sealing fit is installed in the through hole. Part of the upper shaft is installed in the bushing.

[0007] An oil inlet pipe for connecting to the oil box is provided on the bushing located outside the sealed chamber.

[0008] The bushing is provided with an oil passage, and the outer circumferential wall of the upper shaft is provided with a groove opposite to the oil passage. The oil passage is connected to the oil outlet and the oil inlet pipe.

[0009] The oil box is installed at the bottom of the housing.

[0010] The housing is also equipped with a lower viewing window, and the inner wall of the housing is provided with an oil storage cover that communicates with the oil box. The lower viewing window is arranged opposite to the oil storage cover.

[0011] A connecting rod is provided between the upper shaft and the lower shaft, and the upper viewing window is located above the connecting rod.

[0012] The upper viewing window forms an oil drip groove on the inner wall of the side facing the sealed chamber, and also includes an oil outlet pipe connected to the oil circuit. One end of the oil outlet pipe extends into the oil drip groove and is provided with an oil outlet nozzle.

[0013] The beneficial effects of this utility model are: This utility model provides a sealed oiling structure for sewing equipment. By setting an oil box, oil is poured onto the upper and lower shafts, and excess oil will return to the oil box to form a circulation, which is convenient to use. Attached Figure Description

[0014] Figure 1 This is a perspective view of one embodiment of the present invention.

[0015] Figure 2 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0016] Figure 3 This is a partial explosion diagram of one embodiment of the present invention.

[0017] Figure 4 This is a partial perspective view of one embodiment of the present invention.

[0018] Figure 5 This is a partial cross-sectional view of one embodiment of the present invention.

[0019] Figure 6 This is a cross-sectional view of FF.

[0020] Figure 7 This is a partial perspective view of one embodiment of the present invention.

[0021] Figure 8 This is a cross-sectional schematic diagram of one embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings. The sealing and refueling structure of the sewing equipment includes a housing 1, within which a sealing cavity 11, an upper shaft 12, and a lower shaft 13 are provided. Part of the upper shaft is located within the sealing cavity, and part of the lower shaft is located within the sealing cavity. It also includes an oil box 2, mounted on the housing; a pump connected to the oil box; an oil outlet 4 connected to the pump, used to refuel the upper shaft and / or the lower shaft; and an oil return port 14 located within the sealing cavity and connected to the oil box. In use, the pump delivers oil from the oil box to the oil outlet, which can spray it directly onto the upper and lower shafts, or spray it upwards onto the upper and lower shafts. Excess oil returns to the oil box through the oil return port at the bottom. The sealing refers to the fact that the portion of the oil flowing from the oil box to the sealing cavity and then back to the oil box is sealed. The oil return port allows for convenient oil discharge back to the oil box via a pipe. A separate pump can be installed. The pump can be installed outside the sealing cavity, with an oil pipe extending in to engage with the oil outlet.

[0023] In this embodiment, as shown in the figure, the housing is provided with an upper viewing window 15, and the oil outlet is positioned facing the upper viewing window. The upper viewing window can be made of a transparent material, such as glass or transparent plastic, allowing the user to see whether the oil spraying is working properly.

[0024] In this embodiment, as shown in the figure, the housing is provided with a plurality of walls 16, which enclose to form the sealed cavity. The walls are provided with through holes, and the through holes are provided with sealing bushings 161, and part of the upper shaft is installed in the bushings.

[0025] In this embodiment, as shown in the figure, an oil inlet pipe 162 for connecting to the oil box is provided on the bushing located outside the sealed cavity.

[0026] In this embodiment, as shown in the figure, the bushing is provided with an oil passage 163, and the outer circumferential wall of the upper shaft is provided with a groove 121 opposite to the oil passage. The oil passage is connected to the oil outlet and the oil inlet pipe. The bushing contains a plunger 123 and an elastic element 124. The groove is located on the outer circumferential wall of the upper shaft. When the upper shaft rotates, oil is drawn into the oil passage, similar to the operation of a plunger valve. Refer to the structure in CN215289239U; the groove corresponds to the eccentric portion of that document. This embodiment uses the upper shaft as the power source of the pump, resulting in a more compact structure. A similar bushing can also be provided on the lower shaft.

[0027] In this embodiment, as shown in the figure, the oil box is installed at the bottom of the housing.

[0028] In this embodiment, as shown in the figure, a lower viewing window 17 is also installed on the housing, and an oil storage cover 18 communicating with the oil box is provided on the inner wall of the housing. The lower viewing window is arranged opposite to the oil storage cover. Part of the oil in the oil box will flow into the oil storage cover, and it can be seen through the lower viewing window whether there is still oil. The oil storage cover and the oil box are at approximately the same horizontal plane.

[0029] In this embodiment, as shown in the figure, a connecting rod 111 is provided between the upper shaft and the lower shaft, and the upper viewing window is located above the connecting rod.

[0030] In this embodiment, as shown in the figure, an oil drain groove 151 is formed on the inner wall of the side of the upper viewing window facing the sealed chamber. It also includes an oil outlet pipe 19 connected to the oil passage. One end of the oil outlet pipe extends into the oil drain groove and is equipped with an oil outlet nozzle. Oil flows into the oil drain groove and then down the inner wall of the groove before falling onto the upper and lower shafts.

[0031] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0033] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A sealing and lubrication structure for a sewing machine, comprising a housing (1), wherein a sealing cavity (11), an upper shaft (12), and a lower shaft (13) are provided within the housing, wherein a portion of the upper shaft is disposed within the sealing cavity, and a portion of the lower shaft is disposed within the sealing cavity, characterized in that: Also includes Oil box (2), installed on the housing; The pump is connected to the oil box; The oil outlet (4) is connected to the pump and is used to add oil to the upper shaft and / or the lower shaft; The oil return port (14) is located in the sealed chamber and communicates with the oil box.

2. The sealing and oiling structure of the sewing apparatus according to claim 1, characterized by: The housing is provided with an upper viewing window (15), and the oil outlet is positioned facing the upper viewing window.

3. The sealing and oiling structure of the sewing apparatus according to claim 2, characterized by: The housing has several walls (16) that enclose the sealed cavity. The walls have through holes and a bushing (161) for sealing fit is provided in the through holes. Part of the upper shaft is installed in the bushing.

4. The sealing and oiling structure of the sewing apparatus according to claim 3, characterized by: An oil inlet pipe (162) for connecting to the oil box is provided on the bushing located outside the sealed chamber.

5. The sealing and oiling structure of the sewing apparatus according to claim 4, characterized by: The bushing is provided with an oil passage (163), and the outer wall of the upper shaft is provided with a groove (121) opposite to the oil passage. The oil passage is connected to the oil outlet and the oil inlet pipe.

6. The sealing and oiling structure of the sewing apparatus according to any one of claims 1 to 5, characterized in that: The oil box is installed at the bottom of the housing.

7. The sealing and oiling structure of the sewing apparatus according to claim 1, characterized by: The housing is also equipped with a lower viewing window (17), and the inner wall of the housing is provided with an oil storage cover (18) that communicates with the oil box. The lower viewing window is arranged opposite to the oil storage cover.

8. The sealing and oiling structure of the sewing apparatus according to claim 5, characterized by: A connecting rod (111) is provided between the upper shaft and the lower shaft, and the upper viewing window is located above the connecting rod.

9. The sealing and oiling structure of the sewing apparatus according to claim 8, characterized by: The upper viewing window forms an oil drip groove (151) on the inner wall of the side facing the sealed chamber, and also includes an oil outlet pipe (19) connected to the oil circuit. One end of the oil outlet pipe extends into the oil drip groove and is provided with the oil outlet nozzle.

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