Anti-static structure of sewing machine
By designing a rotary connection structure and a conductive grounding structure in the sewing machine, the anti-static failure problem caused by the disengagement of the conductive layer during the maintenance process of the sewing machine is solved, and the electrostatic protection under various working conditions is achieved, ensuring safe operation and simplifying Installation process.
Patent Information
- Application Number
- CN202420849452.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-04-23
AI Technical Summary
During the maintenance process of existing sewing machines, the conductive layer of the body is disconnected from the body after the body is turned, resulting in anti-static failure and the risk of electric shock.
A rotating connection structure including the body and the tabletop is designed, and the grounding structure is connected through the conductive structure to ensure that the body can maintain conductive contact regardless of whether in normal working state or in a rollover maintenance state to prevent static electricity accumulation. This structure includes a curved surface, an elastic conductive part and a limiting surface to ensure that the connecting hook always comes into contact with the conductive member and avoid poor contact.
It realizes the anti-static effect of the sewing machine under various working conditions, ensures safe operation, has flexible structure and high contact reliability, making it easier to install.
Smart Images
Figure CN222182737U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a sewing machine structure, in particular to an anti-static structure of a sewing machine. Background Art
[0002] During the use of sewing machines, static electricity often accumulates between the fabric and the needle plate, static electricity accumulates inside the circuit board, and other problems, which can cause static electricity wrinkles on the fabric and electric shock to the workers. In order to ensure the normal sewing of the fabric and the safety of the workers, it is necessary to solve the static electricity problem of the sewing machine's working body.
[0003] Existing sewing machine workbenches generally solve the static electricity problem through anti-static rubber plates and grounding structures. For example, Chinese patent literature discloses an industrial sewing machine anti-static workbench [application number: 202121599966.3; authorization announcement number: CN214992307U]. The table top of the workbench is fixed with an anti-static rubber plate. The anti-static rubber plate is mainly made of static conductive materials, static dissipative materials and synthetic rubber through a variety of processes. The surface layer is a static dissipative layer and the bottom layer is a conductive layer, thereby achieving an anti-static effect. The grounding structure includes a cylinder, a pin rod, a tension spring, a straight groove and a short rod. The surface of the base plate is fixedly mounted with a cylinder, and the inside of the cylinder is slidably connected with a pin rod, which passes through the base plate and extends to the bottom of the base plate. A tension spring is fixedly mounted between the pin rod and the base plate. A straight groove is provided on the surface of the cylinder, and the top of the pin rod is rotatably connected with a short rod, which is slidably connected to the straight groove. A notch is provided on the top of the cylinder, and the tension spring can pull the pin rod downward so that the pin rod can touch the ground, thereby conducting the static electricity of the table top and the machine body into the earth to achieve an anti-static effect.
[0004] However, in actual sewing work, the sewing machine often needs to be turned over for inspection and maintenance. After being turned over, the sewing machine cannot contact the conductive layer at the bottom of the antistatic rubber sheet, thus losing the antistatic effect. Utility Model Content
[0005] The utility model aims to overcome the problem in the prior art that during the maintenance process of the sewing machine, after the machine body is turned over, the conductive layer is separated from the sewing machine body, resulting in anti-static failure and the risk of electric shock for the operator. An anti-static structure for a sewing machine is provided, which can not only solve the static electricity problem of the sewing machine, but also take into account various working conditions such as normal sewing of the sewing machine and overturning maintenance.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model comprises a machine body and a table top, and also comprises a grounding structure. A rotating connection structure is arranged between the machine body and the table top, and the rotating connection structure is connected to the grounding structure through a conductive structure.
[0008] The grounding structure can be used to conduct static electricity generated by the machine body to the ground, thereby preventing operators from getting electric shock. Conventional grounding structures are directly connected to the machine body through conductive structures. Once the machine body is disconnected from the conductive structure during the sewing machine maintenance process, the anti-static effect is lost. In the present application, the conductive structure of the sewing machine is connected between the rotating connection structure and the grounding structure. Since the machine body is always connected to the rotating connection structure no matter how it is turned over, the present application can achieve an anti-static effect regardless of whether the sewing machine is in normal working state or in a sideways maintenance state.
[0009] Preferably, the rotating connection structure includes a connecting hook, the connecting hook includes a curved surface, and the conductive structure includes a hook seat conductive member with one end in contact with the curved surface. Through the curved surface, the connecting hook can maintain contact with the hook seat conductive member during the rotation of the body, thereby stably achieving conductivity during the flipping process.
[0010] Preferably, the rotating connection structure further comprises an insulating connection seat, on which an arc-shaped notch is provided to match the arc-shaped surface of the connection hook. The connection hook can be limited by the connection seat and the arc-shaped notch, especially the center position of the arc-shaped surface can be located to prevent the hook seat conductive part from separating from the arc-shaped surface.
[0011] Preferably, the conductive structure includes an elastic conductive part with one end in contact with the rotating connection structure. The elastic conductive part is arranged on the hook seat conductive member of the conductive structure. Through the elastic conductive part, the end of the hook seat conductive member can always maintain the contact with the arc surface under the action of elastic force to avoid poor contact.
[0012] Preferably, the conductive structure further comprises a table top conductive part installed in the table top and a conductive path installed at the bottom of the table top, and the lower end surface of the table top conductive part is completely covered by the conductive path. With this structure, it is possible to avoid the situation where the static electricity transmission efficiency is reduced due to poor contact between the table top conductive part and the conductive path.
[0013] Preferably, the connecting hook includes a limiting surface, and the connecting seat is provided with a limiting portion adapted to the limiting surface of the connecting hook. This structure can limit the turning angle of the machine body to avoid collision damage to the sewing machine structure caused by excessive turning of the machine body.
[0014] Preferably, there is a gap between the end of the arc-shaped surface and the limiting surface. The gap allows the structure of the connecting hook to have a certain elasticity; due to the elasticity of the connecting hook, the connecting hook can achieve buffering through a small amount of deformation during the body flipping process, thereby avoiding the body from having too much impact on the connecting hook, resulting in damage to the connecting hook. At the same time, this structure also allows the body to have a certain degree of freedom during the installation process, thereby making installation easier.
[0015] Preferably, the connecting hook is provided with a plug that is adapted to be connected to the body, the body is provided with a slot that is adapted to be connected to the plug, and there is an installation gap between the bottom of the slot and the end of the plug. The installation gap also allows the body to have a certain degree of freedom during installation, thereby making installation easier.
[0016] Preferably, the grounding structure and the conductive structure are electrically connected.
[0017] Preferably, the grounding structure comprises a conductive spring and a metal contact. The conductive spring can ensure the contact pressure between the metal joint and the ground on the basis of electrical conduction, thereby avoiding the problem of poor contact between the metal joint and the ground due to uneven ground conditions.
[0018] Preferably, the end of the metal contact in contact with the ground is an arc surface.
[0019] Therefore, the utility model has the following beneficial effects: (1) it can remove static electricity from the sewing machine body; (2) after the sewing machine body is turned over, the static electricity removal effect can still be maintained, and various working conditions such as normal sewing and side-turning maintenance of the sewing machine can be taken into account; (3) the structure has a certain flexibility and is easier to install; (4) the contact reliability of the conductive structure is strong and poor contact is not easy. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0021] Figure 2 It is a structural schematic diagram of the utility model at an upward viewing angle.
[0022] Figure 3 It is a structural schematic diagram of the connection hook component and the conductive structure when the sewing machine of the utility model is placed normally.
[0023] Figure 4 The utility model is a structural schematic diagram of a connecting hook component and a conductive structure when the sewing machine is placed sideways.
[0024] Figure 5 It is a structural schematic diagram of the grounding structure of the utility model.
[0025] Figure 6 It is a structural schematic diagram of the hook seat conductive member of the second embodiment of the utility model.
[0026] Figure 7 It is a structural schematic diagram of the installation position of the hook seat conductive member of the second embodiment of the utility model.
[0027] In the figure: table 1 body 2 conductive structure 3 hook seat conductive member 31 elastic conductive part 311 table conductive member 32 conductive path 33 bracket 4 grounding structure 5 conductive spring 51 metal contact 52 rotating connection structure 6 connection hook 61 connection seat 62 plug 63. DETAILED DESCRIPTION
[0028] The present invention will be further described below in conjunction with the accompanying drawings and specific implementation methods.
[0029] Embodiment 1, as Figure 1-5 As shown, an anti-static structure of a sewing machine includes: a table 1, a body 2, a conductive structure 3, a bracket 4, and a grounding structure 5. A rotating connection structure 6 is provided between the body 2 and the table 1, and the rotating connection structure 6 is connected to the grounding structure 5 through the conductive structure 3.
[0030] The table 1 is mounted on the bracket 4, and is mainly used to provide the operator with the operating space required for sewing. At the same time, it also provides support for the machine body 2. The machine body 2 can be turned sideways on the table 1. When the machine body 2 turns sideways, the axis where the rotating connection structure 6 is located is the rotation axis of the turning sideways. The rotating connection structure 6 can be one or more. When the number is multiple, multiple rotating connection structures 6 are arranged on the same side of the machine body 2, which can improve the reliability during rotation and reduce the force of a single rotating connection structure 6. In this embodiment, the number of the rotating connection structures 6 is two.
[0031] The bracket 4 is fixedly connected to the lower side of the table 1 to support the table 1. A plurality of legs are provided at the bottom of the bracket 4, and gaskets are installed on the legs. The conductive structure 3 passes through the table 1 from the rotating connection structure 6, along the lower side of the table 1 and the bracket 4, and extends to the grounding structure 5, and is electrically connected to the grounding structure 5.
[0032] The grounding structure 5 is a flexible conductive metal component. In this embodiment, the component is composed of a conductive spring 51 and a metal contact 52. Furthermore, the side of the metal contact 52 that contacts the ground is a curved surface. In other possible embodiments, the grounding structure 5 can also be a conductive metal chain, or an elastic conductive metal part, etc. This design allows the grounding structure 5 to reliably touch the ground after the workbench is installed, and is convenient for workers to install and move.
[0033] The rotating connection structure 6 includes a conductive connection hook 61 and an insulating connection seat 62. The table 1 is provided with a mounting groove adapted to the connection seat 62, and the connection seat 62 is fixedly installed in the mounting groove. The connection hook 61 consists of three main parts, namely: a plug 63, a limiting surface, and an arc surface. The plug 63 is used to adapt and plug with the body 2. The body 2 is provided with a slot adapted to the plug 63, and there is an installation gap between the bottom of the slot and the end of the plug 63. The installation gap allows the body 2 to have a certain degree of freedom during the installation process, thereby making the installation easier. The limiting surface is a plane, and the connection seat 62 is provided with a limiting part adapted to the limiting surface of the connection hook 61. Through this structure, the turning angle of the body 2 can be limited. When the body 2 turns over a certain angle, the limiting surface will rely on the limiting part and cannot continue to rotate, thereby avoiding the problem of collision damage to the sewing machine structure caused by excessive turning of the body 2. The arc surface is an arc, and the axis of the arc is the rotation center when the body 2 is turned over. The connection seat 62 is provided with an arc notch adapted to the arc surface of the connection hook 61. The connection seat 62 and the arc notch can limit the connection hook 61, especially the center position of the arc surface, to prevent the conductive structure 3 from separating from the arc surface. The combined shape of the arc surface and the limiting surface is D-shaped.
[0034] A section of the conductive structure 3 passes through the table top 1, and the section passing through the table top 1 includes a hook seat conductive member 31, a table top conductive member 32 and a conductive path 33 from top to bottom. The hook seat conductive member 31 is located in the arc-shaped recess, and the hook seat conductive member 31 includes an elastic conductive portion 311. Through the elastic conductive portion 311, the end of the hook seat conductive member 31 can always maintain the contact with the arc surface under the action of elastic force to avoid poor contact. The lower end surface of the conductive part of the table top 1 is completely covered by the conductive path 33, and the conductive path 33 is connected to the conductive structure 3 on the lower side of the table top 1. Through this structure, it is possible to avoid the situation where the electrostatic transfer efficiency is reduced due to poor contact between the conductive part of the table top 1 and the conductive path 33.
[0035] The cross-section of the connecting seat 62 is L-shaped, and includes a vertical portion and a horizontal portion. The vertical portion is a limiting portion, and the hook seat conductive member 31 is installed in the horizontal portion.
[0036] During the use of the device, if the body 2 of the sewing machine is in a normal sewing state, the plug 63 is in a horizontal direction, and the static electricity on the body 2 and the table 1 is transferred to the rotating connection structure 6 through the plug 63. At this time, the bottom of the arc surface is in contact with the hook seat conductive member 31, and the static electricity is transferred to the conductive structure 3 on the lower side of the table 1 through the hook seat conductive member 31, the table conductive member 32, and the conductive path 33 in sequence, and then along the lower side of the table 1 and the bracket 4, all the way to the grounding structure 5 located at the bottom of the bracket 4, and is introduced to the ground through the conductive spring 51 and the metal contact 52. When the sewing machine needs to be repaired and inspected, the operator turns over the machine body 2. During the turning over process, the machine body 2 turns over with the axis of the arc surface as the rotation axis, and the plug 63 is turned over together with the machine body 2. During the turning over process, the arc surface is always in full contact with the arc recess. At the same time, the hook seat conductive member 31 located in the arc recess is always in contact with the lower side of the arc surface. Until the turning over is completed, the position of the conductive structure 3 remains unchanged and can still be effectively electrically connected to the machine body 2. Through this process, the present application not only achieves the anti-static effect of the sewing machine in the normal sewing state, but also solves the anti-static problem of the sewing machine when it is turned over under the inspection and maintenance conditions.
[0037] Embodiment 2, as Figure 6-7 As shown, an anti-static structure of a sewing machine includes: a table 1, a body 2, a conductive structure 3, a bracket 4, and a grounding structure 5. A rotating connection structure 6 is provided between the body 2 and the table 1, and the rotating connection structure 6 is connected to the grounding structure 5 through the conductive structure 3.
[0038] The table 1 is mounted on the bracket 4, and is mainly used to provide the operator with the operating space required for sewing. At the same time, it also provides support for the machine body 2. The machine body 2 can be turned sideways on the table 1. When the machine body 2 turns sideways, the axis where the rotating connection structure 6 is located is the rotation axis of the turning sideways. The rotating connection structure 6 can be one or more. When the number is multiple, multiple rotating connection structures 6 are arranged on the same side of the machine body 2, which can improve the reliability during rotation and reduce the force of a single rotating connection structure 6. In this embodiment, the number of the rotating connection structures 6 is two.
[0039] The bracket 4 is fixedly connected to the lower side of the table 1 to support the table 1. A plurality of legs are provided at the bottom of the bracket 4, and gaskets are installed on the legs. The conductive structure 3 passes through the table 1 from the rotating connection structure 6, along the lower side of the table 1 and the bracket 4, and extends to the grounding structure 5, and is electrically connected to the grounding structure 5.
[0040] The grounding structure 5 is a flexible conductive metal component. In this embodiment, the component is composed of a conductive spring 51 and a metal contact 52. Furthermore, the side of the metal contact 52 that contacts the ground is a curved surface. In other possible embodiments, the grounding structure 5 can also be a conductive metal chain, or an elastic conductive metal part, etc. This design allows the grounding structure 5 to reliably touch the ground after the workbench is installed, and is convenient for workers to install and move.
[0041] The rotating connection structure 6 includes a conductive connection hook 61 and an insulating connection seat 62. The table 1 is provided with a mounting groove adapted to the connection seat 62, and the connection seat 62 is fixedly installed in the mounting groove. The connection hook 61 consists of three main parts, namely: a plug 63, a limiting surface, and an arc surface. The plug 63 is used to adapt and plug with the body 2. The body 2 is provided with a slot adapted to the plug 63, and there is an installation gap between the bottom of the slot and the end of the plug 63. The installation gap allows the body 2 to have a certain degree of freedom during the installation process, thereby making the installation easier. The limiting surface is a plane, and the connection seat 62 is provided with a limiting part adapted to the limiting surface of the connection hook 61. Through this structure, the turning angle of the body 2 can be limited. When the body 2 turns over a certain angle, the limiting surface will rely on the limiting part and cannot continue to rotate, thereby avoiding the problem of collision damage to the sewing machine structure caused by excessive turning of the body 2. The arc surface is an arc, and the axis of the arc is the rotation center when the body 2 is turned over. The connection seat 62 is provided with an arc notch adapted to the arc surface of the connection hook 61. The connection seat 62 and the arc notch can limit the connection hook 61, especially the center position of the arc surface, to prevent the conductive structure 3 from separating from the arc surface. The combined shape of the arc surface and the limiting surface is D-shaped.
[0042] A section of the conductive structure 3 passes through the table top 1, and the section passing through the table top 1 includes a hook seat conductive member 31, a table top conductive member 32 and a conductive path 33 from top to bottom. The hook seat conductive member 31 is located in the arc-shaped recess, and the hook seat conductive member 31 includes an elastic conductive portion 311. Through the elastic conductive portion 311, the end of the hook seat conductive member 31 can always maintain the contact with the arc surface under the action of elastic force to avoid poor contact. The lower end surface of the conductive part of the table top 1 is completely covered by the conductive path 33, and the conductive path 33 is connected to the conductive structure 3 on the lower side of the table top 1. Through this structure, it is possible to avoid the situation where the electrostatic transfer efficiency is reduced due to poor contact between the conductive part of the table top 1 and the conductive path 33.
[0043] The cross-section of the connecting seat 62 is L-shaped, and includes a vertical portion and a horizontal portion. The vertical portion is a limiting portion, and the hook seat conductive member 31 is installed in the horizontal portion.
[0044] The difference between this embodiment and the first embodiment is that the material of the elastic conductive part 311 is shape memory metal, and the elastic conductive part 311 is provided with a plurality of deformation notches spaced apart in the axial direction, and the spacing between any two adjacent deformation notches is equal, and the openings of the two adjacent deformation notches face opposite directions, so that the radial cross-section of the elastic conductive part 311 is a combined U-shape that changes direction continuously. When the elastic conductive part 311 is not squeezed, the upper end is exposed outside the arc-shaped notch, and after the connecting hook 61 is installed, the elastic conductive part 311 is pressed into the connecting seat 62, and abuts against the connecting hook 61 to continuously generate pressure.
[0045] During the use of the device, if the body 2 of the sewing machine is in a normal sewing state, the plug 63 is in a horizontal direction, and the static electricity on the body 2 and the table 1 is transferred to the rotating connection structure 6 through the plug 63. At this time, the bottom of the arc surface is in contact with the hook seat conductive member 31, and the static electricity is transferred to the conductive structure 3 on the lower side of the table 1 through the hook seat conductive member 31, the table conductive member 32, and the conductive path 33 in sequence, and then along the lower side of the table 1 and the bracket 4, all the way to the grounding structure 5 located at the bottom of the bracket 4, and is introduced to the ground through the conductive spring 51 and the metal contact 52. When the sewing machine needs to be repaired and inspected, the operator turns over the machine body 2. During the turning over process, the machine body 2 turns over with the axis of the arc surface as the rotation axis, and the plug 63 is turned over together with the machine body 2. During the turning over process, the arc surface is always in full contact with the arc recess. At the same time, the hook seat conductive member 31 located in the arc recess is always in contact with the lower side of the arc surface. Until the turning over is completed, the position of the conductive structure 3 remains unchanged and can still be effectively electrically connected to the machine body 2. Through this process, the present application not only achieves the anti-static effect of the sewing machine in the normal sewing state, but also solves the anti-static problem of the sewing machine when it is turned over under the inspection and maintenance conditions.
Claims
1. A sewing machine antistatic structure, comprising a machine body and a table, characterized in that: It also includes a grounding structure. A rotating connection structure is provided between the machine body and the table top. The rotating connection structure is connected to the grounding structure via a conductive structure.
2. The antistatic structure of a sewing machine according to claim 1, characterized in that: The rotating connection structure comprises a connection hook, the connection hook comprises an arc surface, and the conductive structure comprises a hook seat conductive member with one end in contact with the arc surface.
3. The antistatic structure of a sewing machine according to claim 2, characterized in that: The rotating connection structure also includes an insulating connection seat, and the connection seat is provided with an arc-shaped recess adapted to the arc-shaped surface of the connection hook.
4. The antistatic structure of a sewing machine according to claim 1, characterized in that: The conductive structure includes an elastic conductive part with one end in contact with the rotating connection structure.
5. The antistatic structure of a sewing machine according to claim 2, characterized in that: The conductive structure further comprises a table top conductive part installed in the table top and a conductive path installed at the bottom of the table top, and the lower end surface of the table top conductive part is completely covered by the conductive path.
6. The antistatic structure of a sewing machine according to claim 3, characterized in that: The connecting hook comprises a limiting surface, and the connecting seat is provided with a limiting portion adapted to the limiting surface of the connecting hook.
7. The antistatic structure of a sewing machine according to claim 2, characterized in that: The connecting hook is provided with a plug adapted to be plugged into the machine body, the machine body is provided with a slot adapted to be plugged into the plug, and there is an installation gap between the bottom of the slot and the end of the plug.
8. The antistatic structure for a sewing machine according to any one of claims 1 to 7, characterized in that: The grounding structure and the conductive structure are electrically connected.
9. The antistatic structure of a sewing machine according to claim 8, characterized in that: The grounding structure includes a conductive spring and a metal contact, and the conductive spring is electrically connected to the metal contact.
10. The antistatic structure of a sewing machine according to claim 9, characterized in that: One end of the metal contact in contact with the ground is an arc surface.