CN210420446U - Bobbin case for household sewing machine - Google Patents
Bobbin case for household sewing machine Download PDFInfo
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- CN210420446U CN210420446U CN201921265399.0U CN201921265399U CN210420446U CN 210420446 U CN210420446 U CN 210420446U CN 201921265399 U CN201921265399 U CN 201921265399U CN 210420446 U CN210420446 U CN 210420446U
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- sewing machine
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- positioning device
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Abstract
The utility model discloses a bobbin case for household sewing machine, which comprises a bobbin case and a case head, wherein the bobbin case is arranged at the upper end of the case head, the bobbin case for household sewing machine is improved on the basis of the bobbin case for the existing household sewing machine, the upper end of the central case on the bobbin case for the existing household sewing machine is provided with a sleeve thread, in addition, the upper end of the central case is sleeved with a positioning device, the positioning device is provided with a fixed block and a positioning ring, after the bobbin is arranged in the bobbin case, the positioning device is arranged at the upper end of the central case, the positioning device is fixed, so that a smaller gap exists between the bobbin case and the bobbin, when the bobbin case for installing the bobbin is transversely arranged on the sewing machine, the bobbin cannot fall off due to the blocking of the positioning device to influence on the installation, and when the sewing machine starts to work, because the gap between the positioning device and the bobbin is smaller, the bobbin is prevented from violently shaking in the bobbin case to cause the condition of breaking and knotting of the lead, and the working efficiency is greatly improved.
Description
Technical Field
The utility model belongs to the technical field of domestic for the sewing machine shuttle peg sleeve is relevant, concretely relates to domestic for the sewing machine shuttle peg sleeve.
Background
The bobbin case for sewing machines is an important component of sewing machines, among which sewing machines for sewing with lockstitch are the most common, and most of these sewing machines use a rotating shuttle, under the bobbin case of which a rotating shuttle is usually installed, the shuttle tip hooks the thread loop, simultaneously enlarges the thread loop, and guides the thread loop to form lockstitch around the bobbin, and the bobbin case of the sewing machine is opened to fix the bobbin, so that the bobbin is placed on the bobbin case, and is installed in the sewing machine for working.
The existing bobbin case technology for the household sewing machine has the following problems: when the bobbin sleeve for the existing household sewing machine is internally provided with the bobbin, the bobbin sleeve after being installed is fixed on the sewing machine after the bobbin is installed, because the upper end of the bobbin sleeve for the existing household sewing machine is not provided with a shielding object, when the bobbin sleeve is transversely installed, the bobbin is easy to shake and fall from the upper end of the bobbin sleeve and is not easy to install, and in the process of the existing bobbin sleeve for the household sewing machine working, the bobbin sleeve inside the bobbin sleeve shakes back and forth due to high-strength rotation, so that the bobbin shakes inside the bobbin sleeve, the lead is easy to be pulled off or knotted, and the working efficiency is delayed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a domestic bobbin case for sewing machine to there is not shielding object in the bobbin case upper end for the domestic sewing machine who proposes in solving above-mentioned background art, the bobbin rocks easily from the upper end of bobbin case and drops difficult installation and the bobbin rocks around bobbin case is inside, causes the problem of breaking or knoing of lead wire very easily.
In order to achieve the above object, the utility model provides a following technical scheme: the bobbin case for the household sewing machine comprises a bobbin case and a case head, wherein the bobbin case is installed at the upper end of the case head, a fixing rod is arranged at the lower end of the case head, a center case is arranged at the center of the inner wall of the lower end of the bobbin case, a sleeve hole with an upward opening is formed in the circumference of the center case, a positioning device is arranged on the circumference outer wall of the center case close to the upper end, the center case and the positioning device are fixedly connected through sleeve threads, a threading opening is formed in the upper end outer wall of the front side of the bobbin case, a thread opening is formed in the circumference outer wall of the bobbin case on the right side of the threading opening, the thread opening and the threading opening are fixedly connected through thread traces, and a thread guide block is arranged at the lower end of the left.
Preferably, the positioning device is provided with a fixed block, and the outer wall of the upper end of the fixed block is provided with a positioning ring.
Preferably, the inner wall of the circumference of the positioning ring is provided with a ring thread.
Preferably, the height of the bobbin is two centimeters, and the thickness of the bobbin is zero point three centimeters.
Preferably, the central sleeve and the inner wall of the lower end of the bobbin barrel are kept in a relatively vertical state.
Preferably, the diameter of the central sleeve is zero three centimeters, and the diameter of the central sleeve is slightly smaller than that of the positioning ring.
Preferably, the positioning ring and the fixing block are kept in a parallel state, and the positioning ring and the fixing block are fixedly connected through welding.
Compared with the bobbin case technology for the existing household sewing machine, the utility model provides a bobbin case for household sewing machine possesses following beneficial effect:
the bobbin case for the household sewing machine of the utility model is improved on the basis of the existing bobbin case for the household sewing machine, the upper end of a central sleeve on the existing bobbin sleeve for the household sewing machine is provided with a sleeve thread, and the upper end of the central sleeve is sleeved with a positioning device, the positioning device is provided with a fixed block and a positioning ring, after the bobbin is arranged in the bobbin sleeve, the positioning device is arranged at the upper end of the central sleeve, the positioning device is fixed, a small gap is formed between the positioning device and the bobbin, at the moment, when the bobbin case for mounting the bobbin is transversely mounted on the sewing machine, the bobbin will not fall off due to the blocking of the positioning device to affect the mounting, and when the sewing machine starts to work, because the clearance between the positioning device and the bobbin is small, the bobbin does not shake violently in the bobbin case to cause the breaking and knotting of the lead, and the working efficiency is greatly improved;
the utility model discloses the center cover upper end that domestic sewing machine bobbin cover was sheathe in for current domestic sewing machine bobbin has increased set screw thread, positioner has been increased on center cover, be provided with the circle screw thread on this positioner, fixed block and position circle, when needs install the bobbin in the bobbin cover, earlier with the positioner of center cover upper end through the inside circle screw thread effect of the cover screw thread of center cover upper end and position circle, take out from the center cover, install the bobbin on the center cover, afterwards, utilize cover screw thread to fix again in the upper end of center cover with positioner, make the upper end of fixed block on the positioner and bobbin have very little clearance, the bobbin can not drop when making the installation, under the pivoted condition that does not hinder the bobbin, can prevent rocking of bobbin in operation again, the fracture of lead wire and violent the knot have been avoided.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:
FIG. 1 is a schematic view of a three-dimensional structure of a bobbin case for a domestic sewing machine according to the present invention;
fig. 2 is a schematic structural view of the positioning device of the present invention;
fig. 3 is a schematic view of the distribution structure of the positioning device of the present invention;
in the figure: 1. a central sleeve; 2. a bobbin case; 3. a threading opening; 4. a guide stitch; 5. a cartridge head; 6. fixing the rod; 7. a lead block; 8. a wire port; 9. a positioning device; 10. sleeving threads; 11. trepanning; 12. positioning rings; 13. a fixed block; 14. and (5) screwing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a bobbin case for a household sewing machine comprises a bobbin barrel 2 and a bobbin head 5, wherein the bobbin barrel 2 is arranged at the upper end of the bobbin head 5, the height of the bobbin barrel 2 is two centimeters, the thickness of the bobbin barrel 2 is three centimeters, the bobbin barrel 2 is placed in the bobbin barrel 2 at a proper height, the bobbin is ensured to have good quality due to the proper thickness of the bobbin barrel 2, a fixing rod 6 is arranged at the lower end of the bobbin head 5, a center sleeve 1 is arranged at the center of the inner wall of the lower end of the bobbin barrel 2, the center sleeve 1 and the inner wall of the lower end of the bobbin barrel 2 are kept in a relatively vertical state, so that when the bobbin is arranged on the center sleeve 1, the bobbin can smoothly rotate between the center sleeve 1 and the bobbin case, the diameter of the center sleeve 1 is three centimeters, the diameter of the center sleeve 1 is slightly smaller than that of a positioning ring 12, and therefore the positioning ring 12 can be smoothly sleeved on the center sleeve 1, the circumference of the central sleeve 1 is internally provided with a trepanning 11 with an upward opening, the circumference outer wall of the central sleeve 1 close to the upper end is provided with a positioning device 9, the positioning device 9 is provided with a fixed block 13, the upper end outer wall of the fixed block 13 is provided with a positioning ring 12, the positioning ring 12 and the fixed block 13 are kept in a relatively parallel state, the positioning ring 12 and the fixed block 13 are fixedly connected by welding, the parallel state of the positioning ring 12 and the fixed block 13 ensures the stability between the positioning ring 12 and the fixed block 13, the firmness is improved by fixedly connecting the positioning ring 12 and the fixed block 13 by welding, the circumference inner wall of the positioning ring 12 is provided with a ring thread 14, the interaction between the ring thread 14 and a sleeve thread 10 on the positioning ring 12 controls the up-and-down movement of the positioning device 9, the fixed block 13 and the positioning ring 12 are integrated, the position of the, the central sleeve 1 and the positioning device 9 are fixedly connected through a sleeve thread 10, a threading opening 3 is formed in the outer wall of the upper end of the front side of the bobbin core barrel 2, a thread opening 8 is formed in the outer wall of the circumference of the bobbin core barrel 2 on the right side of the threading opening 3, the thread opening 8 and the threading opening 3 are fixedly connected through a thread guide trace 4, and a thread guide block 7 is arranged at the lower end of the left side of the thread opening 8.
The utility model discloses a theory of operation and use flow: the utility model discloses a bobbin case for domestic sewing machine is improved on the basis of the bobbin case center sleeve 1 for the domestic sewing machine, the upper end of the center sleeve 1 on the bobbin case for the domestic sewing machine is provided with a set thread 10, and, a positioning device 9 is sleeved on the upper end of the center sleeve 1, the bobbin is fixed in the bobbin case through a fixed block 13 and a positioning ring 12 on the positioning device 9, the positioning device 9 is installed on the upper end of the center sleeve 1, the positioning device 9 is fixed, so that a smaller gap exists between the fixed block 13 and the bobbin, at the moment, when the bobbin case for installing the bobbin is transversely installed on the sewing machine, the bobbin cannot drop due to the blocking of the positioning device 9 to influence the installation, and, when the sewing machine starts to work, because the gap between the positioning device 9 and the bobbin is smaller, so that the bobbin cannot shake violently in the bobbin case to cause the breaking and knotting of the lead wire, namely, after the bobbin case for the household sewing machine is improved, the work can be smoothly carried out, the sewing work efficiency is greatly improved, after the utility model is installed, the bobbin case with the bobbin is put into the sewing machine, the lead wire on the bobbin is put at the position of the thread opening 8 by passing through the thread opening 3 and the lead thread trace 4, the outside of the bobbin case is provided with the rotating shuttle, the rotating shuttle is connected with the lead wire to rotate, and the bobbin is driven to rotate on the center case 1 to work, the upper end of the center case 1 of the bobbin case for the household sewing machine of the utility model is provided with the sleeve thread 10, the upper end of the center case 1 is provided with the positioning device 9, the positioning device 9 is provided with the ring thread 14, the fixed block 13 and the positioning ring 12, when the bobbin needs to be installed in the bobbin case, the positioning device 9 at the upper end of the center case 1 firstly acts on the sleeve thread 10 at the upper end of the center case 1 and the ring thread 14 inside the positioning ring thread 12, the bobbin is taken out of the center sleeve 1, the bobbin is installed on the center sleeve 1, then the positioning device 9 is fixed at the upper end of the center sleeve 1 again through the sleeve threads 10, a small gap is formed between the fixing block 13 on the positioning device 9 and the upper end of the bobbin, the bobbin cannot fall off during installation, severe shaking of the bobbin in work can be prevented under the condition that the rotation of the bobbin is not hindered, breakage and knotting of leads are avoided, and normal operation of the bobbin sleeve is also guaranteed when the bobbin sleeve is installed.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a domestic bobbin cover for sewing machine, includes bobbin (2) and bobbin head (5), its characterized in that: the bobbin core cylinder (2) is arranged at the upper end of a cylinder head (5), the lower end of the cylinder head (5) is provided with a fixed rod (6), a central sleeve (1) is arranged at the center of the inner wall of the lower end of the bobbin (2), a sleeve hole (11) with an upward opening is arranged in the circumference of the central sleeve (1), a positioning device (9) is arranged on the circumferential outer wall of the central sleeve (1) close to the upper end, the central sleeve (1) is fixedly connected with the positioning device (9) through a sleeve thread (10), a threading opening (3) is arranged on the outer wall of the upper end of the front side of the bobbin (2), a thread opening (8) is arranged on the circumferential outer wall of the right bobbin core barrel (2) of the threading opening (3), the line mouth (8) and the threading mouth (3) are fixedly connected through a guide line stitch (4), and a guide line block (7) is arranged at the lower end of the left side of the line mouth (8).
2. The bobbin case for a home sewing machine according to claim 1, wherein: the positioning device (9) is provided with a fixed block (13), and the outer wall of the upper end of the fixed block (13) is provided with a positioning ring (12).
3. The bobbin case for a home sewing machine according to claim 2, wherein: and the circumferential inner wall of the positioning ring (12) is provided with a ring thread (14).
4. The bobbin case for a home sewing machine according to claim 1, wherein: the height of the bobbin (2) is two centimeters, and the thickness of the bobbin (2) is zero point three centimeters.
5. The bobbin case for a home sewing machine according to claim 1, wherein: the inner walls of the lower ends of the central sleeve (1) and the bobbin barrel (2) are kept in a relatively vertical state.
6. The bobbin case for a home sewing machine according to claim 2, wherein: the diameter of the central sleeve (1) is three centimeters at zero point, and the diameter of the central sleeve (1) is slightly smaller than that of the positioning ring (12).
7. The bobbin case for a home sewing machine according to claim 2, wherein: the positioning ring (12) and the fixing block (13) are kept in a relatively parallel state, and the positioning ring (12) and the fixing block (13) are fixedly connected through welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265399.0U CN210420446U (en) | 2019-08-06 | 2019-08-06 | Bobbin case for household sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921265399.0U CN210420446U (en) | 2019-08-06 | 2019-08-06 | Bobbin case for household sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210420446U true CN210420446U (en) | 2020-04-28 |
Family
ID=70384856
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921265399.0U Active CN210420446U (en) | 2019-08-06 | 2019-08-06 | Bobbin case for household sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210420446U (en) |
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2019
- 2019-08-06 CN CN201921265399.0U patent/CN210420446U/en active Active
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