Household sewing machine

Abstract

The utility model provides a household sewing machine, which comprises a rear shell, the front shell is in butt joint with the rear shell, and the butt joint position of the front shell and the rear shell is provided with a limiting structure for limiting the front shell and the rear shell to move up and down and left and right; the wrapping shell is installed at the end of the butt joint structure of the front shell and the rear shell in a semi-surrounding mode and used for limiting relative displacement of the front shell and the rear shell in the front-back direction, and a bolt hole is formed in one side of the wrapping shell; according to the utility model, the design structure is reasonable, after the front shell and the rear shell are in butt joint, the cladding at the end position is matched with the single bolt to lock the front shell and the rear shell, and during disassembly and maintenance, the front shell and the rear shell can be separated only by disassembling the bolt and pulling out the cladding outwards along the horizontal direction, so that the disassembly and maintenance are convenient. In addition, due to the fact that the independent bolt hole positions are only arranged at the cladding position, the appearance of the whole machine shell is neater after the machine shell is assembled, and the attractiveness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a household sewing machine. Background Art

[0002] A sewing machine is a device used to sew clothing and other textiles. It uses thread and a needle to sew fabric or other materials together. Sewing machines can be manual or electric and come in many types, including home sewing machines, industrial sewing machines, and embroidery machines.

[0003] The household sewing machine is an important part of the sewing machine. It not only protects the internal mechanical parts and motors, but also has an important impact on the performance of the whole machine. The traditional casing is made of one-piece casting. Although it has the characteristics of structural stability and durability, it is very inconvenient to disassemble. Therefore, the existing technology adopts a split structure to assemble the casing to achieve the rapid disassembly of the internal parts. However, this split structure requires multiple screws to complete the assembly of the two casings, and there is also the problem of time-consuming and labor-intensive disassembly and assembly. In addition, this structure will also make the appearance of the sewing machine unsightly. Utility Model Content

[0004] The utility model provides a household sewing machine to solve the problems of inconvenient assembly and disassembly and unsightly appearance of the existing sewing machine casing mentioned in the background art.

[0005] The technical solution of the utility model is achieved in this way:

[0006] A household sewing machine, comprising:

[0007] Back shell;

[0008] The front shell is butted with the rear shell, and a limiting structure is provided at the butt joint position with the rear shell to limit the up, down, left and right displacement of the front shell and the rear shell;

[0009] The enclosure is semi-enclosed and installed at the end position of the structure where the front shell and the rear shell are connected, and is configured to limit the relative displacement of the front shell and the rear shell in the front and rear directions. A bolt hole is opened on one side of the enclosure, and a bolt is inserted into the bolt hole to connect to the front shell or the rear shell.

[0010] Preferably, the limiting structure includes:

[0011] A stop structure is arranged at the contact edge position between the front shell and the rear shell.

[0012] Preferably, the limiting structure further includes:

[0013] A plurality of limit blocks, which are fixed in the rear shell and have a first end facing the front shell and having an arc-shaped structure;

[0014] The front shell has a plurality of positioning plates extending toward the rear shell, the ends of the positioning plates have positioning grooves matching the arc-shaped outer diameter of the first end, and the first end of the limit block is placed in the positioning groove.

[0015] Preferably, the center lines of the first end arc-shaped structures on the plurality of limit blocks are distributed in a staggered manner in a horizontal and vertical manner inside the rear shell.

[0016] Preferably, the limiting structure further includes:

[0017] A plurality of positioning posts are arranged inside the rear shell and extend toward the front shell, and a blind hole is opened at the center of the end of each positioning post;

[0018] A positioning rod disposed inside the front shell and extending toward the rear shell and corresponding to the position of the positioning column;

[0019] Wherein, the positioning rod is inserted into the blind hole at the end of the positioning column.

[0020] Preferably, a plurality of through-going slide grooves are provided at both sides of the ends of the front shell and the rear shell;

[0021] The inner wall of the cladding is provided with a plurality of clamping plates extending toward the center of the cladding;

[0022] Wherein, the clamping plate is slidably connected in the sliding groove.

[0023] Preferably, the edge of the card plate is provided with a recessed card slot near its inner wall, and the side walls of the front shell and the rear shell can be inserted into the card slot.

[0024] Preferably, a through-thumb area is formed in the middle of the front shell and the rear shell, and a needle and thread storage box and a needle protection cover are installed in the thumb and finger area.

[0025] Preferably, the rear housing has a plurality of mounting positions inside for mounting movement parts of the sewing machine.

[0026] Preferably, it also includes a movement part, which is located in the inner cavity formed by assembling the front shell and the rear shell.

[0027] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0028] The utility model has a reasonable design structure. After the front shell and the rear shell are connected, the front shell and the rear shell can be locked by using the shell at the end position in combination with a single bolt. When disassembling and repairing, the front shell and the rear shell can be separated by simply removing the bolt and pulling the shell out horizontally, thereby achieving a quick disassembly and assembly effect of the shell. In addition, since only a separate bolt hole is provided at the shell position, the appearance of the entire shell is neater after assembly, thereby improving the aesthetics. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0030] Figure 1 Isometric view of the present invention;

[0031] Figure 2 Exploded view of the present invention;

[0032] Figure 3 Front view of the present invention;

[0033] Figure 4 Of the present invention Figure 3 Partial schematic cross-sectional view taken along A-A in the present invention;

[0034] Figure 5 Of the present invention Figure 3 Partial schematic cross-sectional view taken along B-B in the present invention;

[0035] Figure 6 Of the present invention Figure 3 Partial schematic cross-sectional view taken along C-C in the present invention;

[0036] Figure 7 Isometric view of the rear shell of the present invention Figure 1 ;

[0037] Figure 8 Isometric view of the rear shell of the present invention Figure 2 ;

[0038] Figure 9 Isometric view of the front shell of the present invention Figure 1 ;

[0039] Figure 10 Isometric view of the front shell of the present invention Figure 2 ;

[0040] Figure 11 Isometric view of the housing of the present invention;

[0041] Figure 12 Isometric view of the limiting block of the present invention;

[0042] Figure 13 Structural diagram of the present invention configured with a sewing needle storage box and a sewing needle protection cover.

[0043] Wherein:

[0044] 1. Rear shell; 101. Positioning post; 102. Blind hole; 103. Step; 2. Limit block; 201. First end; 202. Second end; 203. Connecting plate; 3. Front shell; 301. Positioning plate; 302. Positioning groove; 303. Positioning rod; 304. Groove; 4. Wrapping shell; 401. Clamping plate; 402. Card slot; 403. Bolt hole; 5. Needle and thread storage box; 6. Needle protection cover; 7. Slide groove; 8. Tiger mouth area. Detailed implementation manners

[0045] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] As Figure 1-13 shown, a household sewing machine includes:

[0047] A rear shell 1, and there are several installation positions for installing sewing machine movement parts inside the rear shell 1, that is, the movement parts are all fixed on the rear shell 1, so that the rear shell 1 serves as the reference installation frame component of the product;

[0048] A front shell 3, which is docked with the rear shell 1, and there is a limit structure at the docking position with the rear shell 1 to limit the up, down, left, and right displacement of the front shell 3 and the rear shell 1. This limit structure mainly enables the front shell 3 and the rear shell 1 not to produce relative sliding after docking, and the two only have the degree of freedom to deviate from each other along the installation direction, that is, the front shell 3 and the rear shell 1 can be separated. The purpose of such a setting can speed up the disassembly speed of the two, saving the time spent on loosening bolts;

[0049] A wrapping shell 4, which is semi-surroundingly installed at the end of the docking structure of the front shell 3 and the rear shell 1, and is set to limit the relative displacement of the front shell 3 and the rear shell 1 in the front and rear directions. A bolt hole 403 is opened on one side of the wrapping shell 4. After a bolt is inserted into the bolt hole 403, it is connected to the front shell 3 or the rear shell 1. Among them, the cross-sectional shape of the wrapping shell 4 is a U-shaped structure, which is used to limit the mutual separation of the front shell 3 and the rear shell 1.

[0050] Specifically, the limit structure includes a rabbet structure provided at the contact edge position of the front shell 3 and the rear shell 1. More specifically, in this example, the rabbet structure includes a step 103 located at the edge position of the rear shell 1 and protruding toward the inner wall direction, and also includes a groove 304 located at the edge position of the front shell 3 and concave toward the inner wall direction. When the front shell 3 and the rear shell 1 are docked, the step 103 can be placed in the groove 304 to form a positioning effect.

[0051] Specifically, the limiting structure further includes:

[0052] A plurality of limiting blocks 2, which are fixed inside the rear shell 1 and have a first end 201 facing the front shell 3 and having an arc-shaped structure. Among them, the limiting block 2 further has a second end 202 away from the first end 201. The second end 202 has a rectangular columnar structure and can be inserted into the rear shell 1. A connecting plate 203 extending to both sides is provided between the first end 201 and the second end 202. Installation holes are formed in the connecting plate 203 for passing through screws or bolts and then being installed inside the rear shell 1;

[0053] Among them, the interior of the front shell 3 has a plurality of positioning plates 301 extending towards the rear shell 1. The end of the positioning plate 301 has a positioning groove 302 matching the arc-shaped outer diameter of the first end 201. The first end 201 of the limiting block 2 is placed in the positioning groove 302. With such a setting, a limiting effect can be formed on the front shell 3 and the rear shell 1.

[0054] More specifically, the center lines of the arc-shaped structures of the first ends 201 on a plurality of limiting blocks 2 are horizontally and vertically staggered inside the rear shell 1, so as to limit the front shell 3 and the rear shell 1 from two different directions and improve the limiting effect.

[0055] Specifically, the limiting structure further includes:

[0056] A plurality of positioning posts 101 provided inside the rear shell 1 and extending towards the front shell 3. A blind hole 102 is provided at the center position of the end of the positioning post 101;

[0057] A positioning rod 303 provided inside the front shell 3 and extending towards the rear shell 1 and corresponding to the position of the positioning post 101;

[0058] Among them, the positioning rod 303 is inserted into the blind hole 102 at the end of the positioning post 101. With such a setting, it is used to cooperate with the above-mentioned rabbet structure and the positioning structure of the first end 201 and the positioning groove 302. The three different limiting structures together achieve the limiting effect of the front shell 3 and the rear shell 1, and have the characteristics of stable structure and accurate positioning.

[0059] Specifically, a plurality of through chutes 7 are provided on both sides of the ends of the front shell 3 and the rear shell 1;

[0060] Both sides of the inner wall of the wrapper 4 have a plurality of clamping plates 401 extending towards the center of the wrapper 4;

[0061] Among them, the clamping plates 401 are slidably connected in the chutes 7, so as to enable the wrapper 4 to be assembled with the front shell 3 and the rear shell 1 along a specified direction and position, and have the advantages of a unique installation and positioning position and a good positioning effect.

[0062] More specifically, the edge of the card plate 401 is provided with a recessed card slot 402 near the inner wall thereof, and the side walls of the front shell 3 and the rear shell 1 can be inserted into the card slot 402. Figure 6 As shown, it can be used to achieve the locking effect of the cladding shell 4, the front shell 3 and the rear shell 1 after the bolts on the cladding shell 4 are tightened.

[0063] Specifically, a through-thumb area 8 is formed in the middle position of the front shell 3 and the rear shell 1, and a needle and thread storage box 5 and a needle protection cover 6 are installed in the thumb and finger area 8, wherein the needle protection cover 6 is arranged around the needle of the sewing machine, and the needle protection cover 6 is made of transparent material, which can take into account the observation of the sewing needle while providing safety protection; the needle and thread storage box 5 is located at the root of the thumb and finger area 8, and is mainly used for storing small sewing tools and accessories.

[0064] Specifically, it also includes movement parts, which are located in the inner cavity formed by assembling the front shell 3 and the rear shell 1. The structure and principle of the movement parts belong to the conventional settings in the prior art and will not be elaborated here.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A household sewing machine, characterized in that, include: rear shell (1); The front shell (3) is butt-jointed with the rear shell (1), and a limiting structure is provided at the butt-jointed position with the rear shell (1) to limit the vertical and horizontal displacement of the front shell (3) and the rear shell (1); The enclosure (4) is semi-enclosed and installed at the end position of the structure where the front shell (3) and the rear shell (1) are connected, and is configured to limit the relative displacement of the front shell (3) and the rear shell (1) in the front-to-back direction. A bolt hole (403) is provided on one side of the enclosure (4), and a bolt is inserted into the bolt hole (403) to connect to the front shell (3) or the rear shell (1).

2. The household sewing machine according to claim 1, characterized in that, The limiting structure comprises: A stop structure is arranged at the edge where the front shell (3) and the rear shell (1) contact each other.

3. The household sewing machine according to claim 2, wherein The limiting structure also includes: A plurality of limit blocks (2) fixed in the rear shell (1) and having a first end (201) facing the front shell (3) and having an arc-shaped structure; The front shell (3) has a plurality of positioning plates (301) extending in the direction of the rear shell (1) inside, the end of the positioning plate (301) has a positioning groove (302) matching the arc-shaped outer diameter of the first end (201), and the first end (201) of the limit block (2) is placed in the positioning groove (302).

4. A household sewing machine according to claim 3, wherein The arc-shaped structure center lines of the first ends (201) on the plurality of limit blocks (2) are distributed in a staggered manner in the rear shell (1) in a horizontal and vertical manner.

5. A household sewing machine according to claim 3, characterized in that, The limiting structure also includes: A plurality of positioning columns (101) arranged inside the rear shell (1) and extending towards the front shell (3), wherein a blind hole (102) is provided at the center of the end of each positioning column (101); A positioning rod (303) disposed inside the front shell (3), extending toward the rear shell (1), and corresponding to the position of the positioning column (101); The positioning rod (303) is inserted into the blind hole (102) at the end of the positioning column (101).

6. A household sewing machine according to claim 1, characterized in that, A plurality of sliding grooves (7) are provided on both sides of the ends of the front shell (3) and the rear shell (1); The inner wall of the cladding shell (4) is provided with a plurality of clamping plates (401) extending towards the center of the cladding shell (4); Wherein, the clamping plate (401) is slidably connected in the sliding groove (7).

7. A household sewing machine according to claim 6, characterized in that, The edge of the card plate (401) is provided with a card slot (402) which is concavely arranged in a direction close to the inner wall thereof, and the side walls of the front shell (3) and the rear shell (1) can be clamped in the card slot (402).

8. A household sewing machine according to claim 1, characterized in that, A through-the-bone area (8) is formed between the front shell (3) and the rear shell (1), and a needle and thread storage box (5) and a needle protection cover (6) are installed in the through-the-bone area (8).

9. A household sewing machine according to claim 1, characterized in that, The rear housing (1) has a plurality of mounting positions inside for mounting sewing machine movement parts.

10. A household sewing machine according to claim 1, characterized in that, It also includes movement parts, which are located in the inner cavity formed by assembling the front shell (3) and the rear shell (1).

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