CN215481674U

CN215481674U - Rotating hook and sewing machine

Info

Publication number: CN215481674U
Application number: CN202120937521.5U
Authority: CN
Inventors: 谢晓武
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-01-11
Anticipated expiration: 2031-04-30

Abstract

The utility model discloses a rotating hook and a sewing machine, wherein the rotating hook comprises a hook disc and a hook tip, a first installation part is arranged on the side wall of the hook disc, the hook tip comprises a tip part and a body part, the body part is used for being embedded with the first installation part, a first embedding structure used for being installed with the body part is arranged at least one of two ends of the first installation part, the first installation part comprises a first side wall, the first side wall is arranged along the circumferential direction of the hook disc, a concave structure is formed on the side wall of the hook disc by the first side wall, a first avoidance area penetrating through the inside and the outside of the hook disc is arranged on the first installation part, the first avoidance area is adjacent to the first side wall, and a body side protruding structure used for being configured with the first avoidance area is arranged on the side face of the body part. First installation department passes through first gomphosis structural installation somatic part, forms the location between the protruding structure of somatic side and the first lateral wall of somatic part side, improves the installation accuracy, and protruding structure of somatic side helps improving the intensity of colluding the point, prevents to collude the sharp fracture. The utility model can be widely applied to the technical field of sewing machines.

Description

Rotating hook and sewing machine

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a rotating hook and a sewing machine.

Background

In the traditional sewing machine structure, the hook disc is a plastic part, the hook tip and the shuttle bed are integrally injection-molded, the manufacturing cost of the hook disc structure is low, but the hook tip of the plastic is easily broken in the thread lifting process. The problem can be solved by adopting the plastic hook disc and the metal hook tip to be assembled into a whole, but the existing hook disc and hook tip are assembled to cause the problems of inaccurate positioning, inconvenient assembly and disassembly and the like.

SUMMERY OF THE UTILITY MODEL

In order to solve at least one of the above technical problems, the utility model provides a rotating hook and sewing machine, which improves the installation precision, and adopts the following technical scheme:

the sewing machine provided by the utility model comprises a rotating hook.

The rotating hook comprises a hook disc and a hook tip, wherein a first installation part is arranged on the side wall of the hook disc, the hook tip comprises a tip part and a body part, the body part is used for being embedded with the first installation part, a first embedding structure used for being installed with the body part is arranged at least at one end of the two ends of the first installation part, the first installation part comprises a first side wall, the first side wall is arranged along the circumferential direction of the hook disc, a concave structure is formed on the side wall of the hook disc by the first side wall, a first avoidance area penetrating through the inside and the outside of the hook disc is arranged on the first installation part, the first avoidance area is adjacent to the first side wall, and a body side convex structure used for being configured with the first avoidance area is arranged on the side surface of the body part.

In some embodiments of the present invention, a bottom of the first mounting portion is provided with a first mounting hole, and a bottom of the body portion is provided with a first pillar for mounting with the first mounting hole.

In some embodiments of the utility model, the first mounting hole is disposed at the bottom of the first avoidance zone.

In some embodiments of the utility model, the rotating hook comprises a connecting piece, the first side wall is provided with a second mounting hole, the body is provided with a third mounting hole, and after the hook disc and the hook tip are mounted, the connecting piece is used for being inserted into the second mounting hole and the third mounting hole.

In some embodiments of the present invention, the connecting member locks the hook plate and the hook tip by means of a threaded connection.

In some embodiments of the utility model, the side wall of the hook plate is provided with a second avoidance area, the second avoidance area is a notch of the side wall of the hook plate, the second avoidance area is arranged adjacent to the first avoidance area, and a bottom protrusion of the second avoidance area forms a first end face of the first mounting portion.

In some embodiments of the present invention, the first end surface of the first mounting portion is provided with a first mounting groove, and the first end surface of the body portion is provided with a first embedding structure, and the first embedding structure is used for connecting with the first mounting groove.

In some embodiments of the present invention, the second end surface of the first mounting portion is provided with a second mounting groove, and the second end surface of the body portion is provided with a second embedding structure, and the second embedding structure is used for being connected with the second mounting groove.

In some embodiments of the utility model, the first side wall is disposed inside the first mounting portion.

The embodiment of the utility model has at least the following beneficial effects: collude the point and collude the mode installation that adopts the gomphosis between the dish lateral wall, first installation department improves the installation accuracy through the first gomphosis structure installation somatic part of tip, forms the location between the protruding structure of somatic part side and the first lateral wall, improves the installation accuracy, and the protruding structure of somatic side helps improving the intensity of colluding the point, prevents to collude the sharp fracture. The utility model can be widely applied to the technical field of sewing machines.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a structural diagram of a rotating hook;

FIG. 2 is a structural view of the hook plate;

FIG. 3 is a structural view of the hook plate;

FIG. 4 is a view of the construction of the hook tip;

fig. 5 is a structural view of the hook tip.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., are used in an orientation or positional relationship indicated based on the drawings, it is merely for convenience of description and simplicity of description, and it is not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore, is not to be considered as limiting the present invention. The features defined as "first" and "second" are used to distinguish feature names rather than having a special meaning, and further, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The utility model relates to a sewing machine, which comprises a rotating hook. With reference to the drawings, the rotating hook is provided with an installation shaft 105, the installation shaft 105 is arranged along the central axis of the rotating hook, the installation shaft 105 is installed in the sewing machine through the rotating hook in a threaded connection mode, and specifically, the installation shaft 105 is provided with external threads.

Other constructions and operations of the sewing machine are known to those skilled in the art and will not be described in detail herein, and the structure of the hook will be developed in detail below.

The utility model relates to a rotating hook which comprises a hook disc 100 and a hook tip 200, wherein an installation shaft 105 is arranged at the bottom of the hook disc 100, the hook disc 100 is made of plastic, the hook tip 200 is made of metal, and the hook tip 200 is of an integrally formed structure. Referring to the drawings, the hook tip 200 includes a tip portion 201 and a body portion 202, the tip portion 201 is disposed at a first end of the body portion 202, and the hook tip 200 is disposed on a side wall of the hook plate 100. Specifically, the side wall of the hook plate 100 is provided with a first installation part, and the body 202 is used for being embedded with the first installation part, and the embedding mode is adopted, so that the disassembly and assembly are convenient. It will be appreciated that at least one of the two ends of the first mounting portion is provided with a first engagement formation for mounting with the body 202.

In order to further improve the mounting accuracy and strength between the hook tip 200 and the hook disc 100, the bottom of the first mounting portion is provided with a first mounting hole 103, the bottom of the body portion 202 is provided with a first upright column 204, and the first upright column 204 is used for mounting with the first mounting hole 103, specifically, when the hook tip 200 and the hook disc 100 are mounted on the side wall, the first upright column 204 is inserted into the first mounting hole 103 to form the embedding positioning and mounting of the body portion 202 and the first mounting portion on three surfaces, so that multiple positioning and connection are realized. Of course, as an alternative, it is also equally possible to design the bottom of the first mounting portion with the first upright 204 and the body 202 with the first mounting hole 103.

It is understood that, in order to facilitate the detachment and installation between the hook tip 200 and the hook plate 100, the insertion direction of the body 202 into the first mounting portion is set to be identical to the insertion direction of the first pillar 204 into the first mounting hole 103 during the engagement, and specifically, the insertion direction of the body 202 into the first mounting portion is designed along the central axis direction of the rotation shaft.

With reference to the drawings, the first mounting portion includes a first sidewall 101, the first sidewall 101 is disposed along a circumferential direction of the hook plate 100, and the first sidewall 101 forms a concave structure on a sidewall of the hook plate 100. In some examples, the thickness of the first sidewall 101 is less than the thickness of the hook plate 100 sidewall. It is understood that the first mounting portion is formed with a recessed structure at a sidewall of the hook plate 100 to mount the body portion 202. Further, the first side wall 101 is disposed at an inner side of the first mounting portion, and it is understood that the first mounting portion forms a concave structure at an outer side of the side wall of the hook plate 100, and the body portion 202 is disposed at an outer side of the side wall of the hook plate 100.

Further, the first side wall 101 is provided with a second mounting hole, the body 202 is provided with a third mounting hole 205, and after the hook plate 100 and the hook tip 200 are mounted, the second mounting hole is communicated with the third mounting hole 205. It can be understood that the rotating hook includes a connector for inserting into the second and third mounting holes 205 to fix the hook tip 200 in the first mounting portion, thereby improving the mounting accuracy and strength between the hook tip 200 and the hook plate 100. Specifically, the connecting piece sets up to screw or bolt, and the connecting piece will collude dish 100 and collude sharp 200 locking through threaded connection's mode, makes things convenient for the dismouting. In some examples, the second mounting hole is provided as a threaded hole, and the connecting member enters the second mounting hole through the third mounting hole 205, and the connecting member is threaded into the second mounting hole. In some examples, the third mounting hole 205 is provided as a threaded hole, and the connecting member enters the third mounting hole 205 through the second mounting hole, and the connecting member is threaded into the third mounting hole 205. In some examples, the connecting member extends through the second and third mounting holes 205, and a locking member is disposed at an end of the connecting member and is threadedly coupled to the connecting member, and specifically, the connecting member is configured as a bolt and the locking member is configured as a nut.

With reference to the drawings, the first installation portion is provided with a first avoidance area 102 penetrating through the inside and the outside of the hook disc 100, the first avoidance area 102 is arranged adjacent to the first side wall 101, the side wall of the hook disc 100 is provided with a second avoidance area 104, the second avoidance area 104 is arranged as a notch of the side wall of the hook disc 100, the pointed portion 201 points to the second avoidance area 104, the second avoidance area 104 is arranged adjacent to the first avoidance area 102, and it can be understood that the first avoidance area 102 is arranged between the first side wall 101 and the second avoidance area 104. Further, the bottom protrusion of the second avoidance area 104 forms the first end surface of the first mounting portion, i.e. a step surface is formed between the second avoidance area 104 and the first avoidance area 102 at the bottom, and it can be understood that the step surface of the second avoidance area 104 has a positioning function for mounting the body portion 202.

With reference to the drawings, a first end face of the first mounting portion is provided with a first mounting groove, the length direction of the first mounting groove is arranged along the direction of the central axis of the rotating shaft, a first embedding structure is arranged on the first end face of the body portion 202 and used for being connected with the first mounting groove, and the first embedding structure is arranged in the first mounting groove. Further, the thickness of the first embedding structure is smaller than that of the body portion 202, the first embedding structure is provided with a step surface on the first end surface of the body portion 202, and the step surface on the first end of the body portion 202 is used for positioning with the first end surface of the first mounting portion. The second end terminal surface of first installation department is provided with the second mounting groove, and the length direction of second mounting groove sets up along the central axis direction of pivot, and the second end terminal surface of somatic part 202 is provided with second embedding structure, and second embedding structure is arranged in the second mounting groove for being connected with the second mounting groove, second embedding structure. Further, the thickness of the second embedding structure is smaller than that of the body portion 202, the second embedding structure is provided with a step surface at the second end face of the body portion 202, and the step surface at the second end of the body portion 202 is used for positioning with the second end face of the second mounting portion.

It is understood that the first mounting groove and the second mounting groove function as the first fitting structure. Of course, in some examples, it may be alternatively designed that the end surface of the first mounting portion is provided with an embedded structure and the end surface of the body portion 202 is provided with a groove structure.

Further, as an alternative, a first embedding structure may be arranged at one of two ends of the first mounting portion. In some examples, the first end surface of the first mounting portion is provided with a first mounting groove, and the first end surface of the body portion 202 is provided with a first embedding structure for connecting with the first mounting groove. In some examples, the second end surface of the first mounting portion is provided with a second mounting groove, and the second end surface of the body portion 202 is provided with a second embedding structure for connecting with the second mounting groove.

With reference to the drawings, a side surface of the body 202 is provided with a body-side protrusion structure 203 configured with the first escape area 102, and the body-side protrusion structure 203 forms a step surface along the central axis direction of the hook plate 100 on the side surface of the body 202. It will be appreciated that when the hooking tip 200 is assembled with the hooking plate 100, the stepped surface of the body-side protrusion 203 is used to form a positioning with the end surface of the first sidewall 101, thereby improving the assembling accuracy. Further, the body-side raised structure 203 extends to the tip 201 to strengthen the structure of the tip 201 and avoid breaking the barbed tip 200. In some examples, the bodyside projection structure 203 is disposed on the inside of the body 202.

In some examples, the first mounting hole 103 is disposed at the bottom of the first avoiding region 102, and it is understood that, along the radial direction of the hook plate 100, the size of the first avoiding region 102 is larger than the size of the bottom of the other region of the first mounting portion, so that the first mounting hole 103 can be disposed at the bottom of the first avoiding region 102 with a larger diameter, so as to provide a higher connection strength between the first pillar 204 of the body 202 and the first mounting hole 103 after mounting.

In the description herein, references to the terms "one embodiment," "some examples," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" or the like, if any, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. A rotary hook is characterized in that: comprises a hook disc (100) and a hook tip (200), wherein the side wall of the hook disc (100) is provided with a first mounting part, the hook tip (200) comprises a tip part (201) and a body part (202), the body part (202) is used for being embedded with the first installation part, at least one of the two ends of the first mounting part is provided with a first embedding structure used for being mounted with the body part (202), the first mounting part comprises a first side wall (101), the first side wall (101) is arranged along the circumferential direction of the hook disc (100), the first side wall (101) forms a concave structure on the side wall of the hook plate (100), the first installation part is provided with a first avoidance area (102) penetrating through the inside and the outside of the hook disc (100), the first avoidance zone (102) is arranged adjacent to the first side wall (101), the side surface of the body part (202) is provided with a body side convex structure (203) which is used for being configured with the first avoidance area (102).

2. The hook according to claim 1, wherein: the bottom of the first mounting part is provided with a first mounting hole (103), the bottom of the body part (202) is provided with a first upright post (204), and the first upright post (204) is used for being mounted with the first mounting hole (103).

3. The hook according to claim 2, wherein: the first mounting hole (103) is arranged at the bottom of the first avoidance area (102).

4. The rotating hook according to any one of claims 1 to 3, wherein: it includes the connecting piece to change collude, first lateral wall (101) are provided with the second mounting hole, somatic part (202) are provided with third mounting hole (205), collude dish (100) with collude sharp (200) installation back, the connecting piece is used for inserting the second mounting hole with third mounting hole (205).

5. The hook according to claim 4, wherein: the connecting piece locks the hook disc (100) and the hook tip (200) in a threaded connection mode.

6. The hook according to claim 1, wherein: collude the lateral wall of dish (100) and be provided with the second and dodge district (104), the second dodge district (104) set up to collude the breach of dish (100) lateral wall, the second dodge district (104) with first dodge district (102) adjacent setting, the bottom arch that the second dodged district (104) constitutes the first end terminal surface of first installation department.

7. The hook according to claim 6, wherein: the first end terminal surface of first installation department is provided with first mounting groove, the first end terminal surface of somatic part (202) is provided with first embedding structure, first embedding structure be used for with first mounting groove is connected.

8. The rotating hook according to claim 1 or 7, wherein: the second end terminal surface of first installation department is provided with the second mounting groove, the second end terminal surface of somatic part (202) is provided with second embedding structure, second embedding structure be used for with the second mounting groove is connected.

9. The hook according to claim 1, wherein: the first side wall (101) is disposed inside the first mounting portion.

10. A sewing machine characterized by: comprising a hook according to any one of claims 1 to 9.