Tweezers with threading apparatus function

Abstract

The tweezers with the threading apparatus function comprise a tweezers body and a threading assembly, and the tweezers body comprises a first tweezers arm and a second tweezers arm; the threading assembly comprises a base, a movable cylinder and a threading piece, the threading piece is connected with the base, a threading part is arranged at the front end of the threading piece, and a thread hooking groove is formed in the threading part; a positioning opening is formed in the front end of the movable cylinder, and the movable cylinder can be connected with the base in a mode of linearly moving back and forth between a first position and a second position; when the movable cylinder is at the first position, the threading part is positioned in a cylinder cavity of the movable cylinder; and when the movable cylinder moves to the second position, the threading part extends forwards from the positioning opening. Under the condition that normal functions of the tweezers are reserved, the threading function is added, threading from back to front can be achieved, and the pair of tweezers can adapt to more auxiliary threading scenes.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a pair of tweezers with a threading function. Background Technology

[0002] Threading is the operation of inserting sewing thread through the eye of a sewing needle, and it is frequently required during sewing. To improve the convenience and safety of threading, existing technologies have proposed auxiliary threading tools, such as the threader mentioned in patent application CN217556462U, which can reduce the difficulty of threading.

[0003] However, these types of thread-threading aids may have some technical problems in practical use:

[0004] Firstly, the shape, size, and function of existing threaders are only suitable for equipment with relatively large operating space, such as flat sewing machines and synchronous sewing machines. For equipment with narrow needle space, such as a four-thread overlock machine, the distance between the two needles is only 2 millimeters, making the space extremely narrow. Existing threading tools cannot complete the auxiliary threading operation under such conditions.

[0005] Secondly, most existing threading aids are limited to threading from left to right. However, in actual operation, many sewing machines thread from back to front, and the position, size, and space of the needles vary. Existing threading aids are difficult to apply to these complex environments. Utility Model Content

[0006] The purpose of this invention is to provide a pair of tweezers with a threading function. While retaining the normal function of tweezers, it adds a threading function and can thread the thread from back to front.

[0007] The present invention provides a pair of tweezers with a threading function, comprising a tweezers body and a threading assembly. The tweezers body includes a first tweezer arm and a second tweezer arm arranged opposite to each other, wherein the length of the first tweezer arm is set along the front-back direction.

[0008] The threading assembly includes a base, a movable cylinder, and a threading component. The threading component is connected to the base, and the front end of the threading component extends forward out of the base. The front end of the threading component is provided with a threading part for passing through the eye of a sewing needle, and the threading part is provided with a hook groove for hooking the sewing thread forward.

[0009] The central axis of the movable cylinder extends in the front-back direction, and the front end of the movable cylinder is provided with a positioning port for cooperating with a sewing needle. The movable cylinder is connected to the base in a manner that allows it to move linearly back and forth between a first position and a second position.

[0010] When the movable cylinder is in the first position, the threading part is located inside the cavity of the movable cylinder;

[0011] When the movable cylinder moves to the second position, the threading part extends forward from the positioning port to drive the sewing thread hooked in the hook groove through the eye of the sewing needle.

[0012] Optionally, the movable cylinder has a side wall opening, which forms a channel for the sewing thread on the outside of the movable cylinder to be inserted into the hook groove.

[0013] Optionally, when the movable cylinder is in the first position, the side wall opening is exposed; when the movable cylinder is in the first position, the inlet of the hook groove faces the side wall opening; or, when the movable cylinder is in the third position between the first and second positions, the inlet of the hook groove faces the side wall opening; the side wall opening is a V-shaped notch.

[0014] Optionally, the base includes a fixed cylinder with its central axis extending in the front-rear direction, the movable cylinder being slidably engaged with the fixed cylinder, and a circumferential fixing structure being provided between the fixed cylinder and the movable cylinder; when the movable cylinder is in the first position, the threading member is located in the space formed by the cavity of the fixed cylinder and the cavity of the movable cylinder.

[0015] Optionally, the base further includes a support seat fixedly mounted on the first tweezer arm, the rear end of the fixing cylinder is connected to the support seat, and the rear end of the threading member is supported rearward on the support seat.

[0016] Optionally, it also includes a spring for providing a restoring force for the movable cylinder to return from the second position to the first position; the rear end of the threading member is provided with a protrusion, the front end of the spring is supported forward on the movable cylinder, and the rear end of the spring is supported rearward on the protrusion; the support base is provided with a slot, and the rear end of the threading member includes an insertion part that mates with the slot.

[0017] Optionally, the first tweezer arm is provided with a clearance groove, and at least a portion of the radial direction of the fixing cylinder is accommodated in the clearance groove.

[0018] Optionally, the threading component is a strip-shaped component, and the movable cylinder is provided with two limiting spring arms that act on both sides of the threading component in the thickness direction; the two limiting spring arms are arranged opposite to each other.

[0019] Optionally, the front end of the threading member is provided with a pointed tip that gradually tapers from back to front.

[0020] Optionally, the threading assembly is mounted on the side of the first tweezers arm facing away from the second tweezers arm.

[0021] This invention proposes a pair of tweezers with a threading function. While retaining the normal functions of tweezers, it adds a threading capability, enabling threading from back to front. This invention optimizes the structure of the threading component. On one hand, by rationally designing the structure, the threading component can be made smaller, allowing threading operations even in confined spaces and adapting to more auxiliary threading scenarios. On the other hand, integrating the threading component into the tweezers makes it easy to find and operate, and also reduces the risk of loss. The threading component proposed in this invention has a wide range of applications. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the tweezers with threading function described in some embodiments;

[0023] Figure 2 for Figure 1 Enlarged view of the middle section structure;

[0024] Figure 3 This is a right view of the tweezers with threading function described in some embodiments;

[0025] Figure 4 This is a top view of the tweezers with threading function described in some embodiments;

[0026] Figure 5 for Figure 4 AA section view in the middle;

[0027] Figure 6 for Figure 5 Enlarged view of the middle section structure;

[0028] Figure 7 for Figure 6 Enlarged view of the middle section structure;

[0029] Figure 8 for Figure 6 Enlarged view of the middle section structure;

[0030] Figure 9 This is a schematic diagram of the structure of the tweezers body described in some embodiments;

[0031] Figure 10 This is a structural schematic diagram of a portion of the threading assembly described in some embodiments;

[0032] Figure 11 This is a structural diagram of the threading assembly described in some embodiments.

[0033] Among them, 1-tweezers body; 2-support base; 3-fixed cylinder; 4-movable cylinder; 5-spring; 6-threading component;

[0034] 101-First tweezer arm; 102-Second tweezer arm; 103-Avoidance notch; 104-Avoidance groove; 105-First connecting hole; 106-Positioning hole;

[0035] 201 - Second connecting hole; 202 - Bottom surface; 203 - Side surface; 204 - Connecting pin; 205 - Slot; 206 - Positioning pin;

[0036] 301 - Guide groove;

[0037] 401 - Guide section; 402 - Positioning port; 403 - Side wall opening; 404 - Limiting spring arm;

[0038] 601 - Hook groove; 602 - Inlet; 603 - Tip; 604 - Protrusion. Detailed Implementation

[0039] The embodiments of this utility model will be described below with reference to the accompanying drawings and preferred embodiments. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be understood that the preferred embodiments are only for illustrating this utility model and not for limiting the scope of protection of this utility model.

[0040] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0041] like Figures 1 to 7The tweezers shown include a tweezers body 1 and a threading assembly. The tweezers body 1 includes a first tweezer arm 101 and a second tweezer arm 102 arranged opposite each other. The length of the first tweezer arm 101 is set along the front-back direction. The threading assembly includes a base, a movable cylinder 4, and a threading member 6. The threading member 6 is connected to the base, and its front end extends forward from the base. The front end of the threading member 6 is provided with a threading part for passing through the eye of a sewing needle. The threading part is provided with a hook groove 601 for hooking the sewing thread forward. The central axis of the movable cylinder 4 extends along the front-back direction. The front end of the movable cylinder 4 is provided with a positioning port 402 for cooperating with a sewing needle. The movable cylinder 4 is connected to the base in a manner that allows it to move linearly back and forth between a first position and a second position. When the movable cylinder 4 is in the first position, the threading part is located inside the cylinder cavity of the movable cylinder 4. When the movable cylinder 4 moves to the second position, the threading part extends forward from the positioning port 402 to drive the sewing thread hooked in the hook groove 601 through the eye of the sewing needle.

[0042] By adopting the above technical solution, while retaining the normal function of the tweezers, a threading function is added, enabling threading from back to front. Integrating the threading component into the tweezers makes it easy to find and operate, and also reduces the risk of losing the threading component. By using the threading component 6 and the movable cylinder 4 that can move back and forth to form the threading structure, the size of the threading component can be made smaller, allowing threading operations to be performed in narrow spaces, and adapting to more auxiliary threading scenarios, especially auxiliary threading scenarios with limited space.

[0043] In specific operation, first hook the sewing thread into the hook groove 601, then lock the positioning port 402 onto the sewing needle, and then push the tweezers body 1 forward, causing the threading part 6 to move forward relative to the movable cylinder 4 until the threading part, carrying the sewing thread hooked in the hook groove 601, passes through the eye of the sewing needle.

[0044] In some embodiments, a side wall opening 403 is provided on the wall of the movable cylinder 4, the side wall opening 403 penetrating the wall of the movable cylinder 4, and the side wall opening 403 forming a channel for the sewing thread on the outside of the movable cylinder 4 to be inserted into the hook groove 601. By adopting the above technical solution, the side wall opening 403 facilitates the insertion of the sewing thread into the hook groove 601, and is easy to operate.

[0045] As a preferred example, to facilitate the insertion of sewing thread into the side wall opening 403, the side wall opening 403 is exposed when the movable tube 4 is in the first position.

[0046] In some embodiments, when the movable cylinder 4 is in the first position, the inlet 602 of the thread groove 601 is directly opposite the side wall opening 403. With this solution, the sewing thread can be directly inserted into the inlet 602 of the thread groove 601 through the side wall opening 403, thereby inserting the sewing thread into the thread groove 601.

[0047] In some other embodiments, when the movable cylinder 4 is in the third position between the first and second positions, the inlet 602 of the hook groove 601 is directly opposite the side wall opening 403. Using the above technical solution, a section of the sewing thread can be first installed at the side wall opening 403, and then the sewing thread can be inserted into the hook groove 601 during the forward pushing of the tweezers body 1.

[0048] As a preferred example, such as Figure 2 As shown, the side wall opening 403 is a V-shaped notch. The width of the V-shaped notch gradually decreases from the opening end to the bottom. The V-shaped notch can guide the sewing thread to be positioned at the bottom of the V-shaped notch, which is easy to operate.

[0049] In practical implementation, in order to facilitate the insertion of sewing thread into the hook groove 601, the depth of the side wall opening 403 in the radial direction of the movable cylinder 4 should be greater than the distance between the hook groove 601 and the opening end of the side wall opening 403 in the radial direction of the movable cylinder 4. That is to say, when the position of the inlet 602 of the hook groove 601 in the axial direction of the movable cylinder 4 corresponds to the position of the side wall opening 403 in the axial direction of the movable cylinder 4, the sewing thread at the bottom of the side wall opening 403 will be inserted into the hook groove 601 along the radial direction of the movable cylinder 4 through the inlet 602 of the hook groove 601.

[0050] As a preferred example, such as Figure 2 As shown, the side wall opening 403 is positioned in the width direction of the first tweezer arm 101, and the side wall opening 403 penetrates the wall of the movable cylinder 4 along the width direction of the first tweezer arm 101. Moreover, the side wall opening 403 penetrates the movable cylinder 4 along the thickness direction of the first tweezer arm 101.

[0051] In some embodiments, such as Figures 1 to 8 As shown, the base includes a fixed cylinder 3 extending along the front-rear direction along the central axis, a movable cylinder 4 slidingly engaging with the fixed cylinder 3, and a circumferential fixing structure provided between the fixed cylinder 3 and the movable cylinder 4; when the movable cylinder 4 is in the first position, the threading piece 6 is located in the space formed by the cavity of the fixed cylinder 3 and the cavity of the movable cylinder 4.

[0052] Using the above technical solution, the fixed cylinder 3 and the movable cylinder 4 can provide protection for the threading component 6. In specific implementation, the circumferential fixing structure includes a guide groove 301 provided on the cylinder wall of the fixed cylinder 3 and a guide portion 401 protruding outward from the cylinder wall of the movable cylinder 4. The length of the guide groove 301 extends in the front-rear direction, and the guide portion 401 extends into the guide groove 301 and slides with the guide groove 301 to achieve a circumferential fixed connection between the fixed cylinder 3 and the movable cylinder 4.

[0053] In some embodiments, such as Figures 1 to 8 As shown, the base also includes a support base 2 fixedly mounted on the first tweezer arm 101. The rear end of the fixing cylinder 3 is connected to the support base 2, and the rear end of the threading component 6 is supported rearward on the support base 2. Using the above technical solution, the support base 2 provides a fixing point for the fixing cylinder 3 and also provides support for the threading component 6.

[0054] In some embodiments, such as Figures 5 to 8 , Figure 10 and Figure 11 As shown, a pair of tweezers with a threading function also includes a spring 5 for providing a restoring force to the movable cylinder 4 from the second position to the first position; the rear end of the threading member 6 is provided with an extension 604, the front end of the spring 5 is supported forward on the movable cylinder 4, and the rear end of the spring 5 is supported rearward on the extension 604; the support base 2 is provided with a slot 205, and the rear end of the threading member 6 includes an insertion part that mates with the slot 205. By adopting the above technical solution, the assembly difficulty of the threading assembly can be reduced by providing the slot 205 and the extension 604. In a specific implementation, the front end of the guide groove 301 and the guide part 401 constitute a limiting structure to prevent the movable cylinder 4 from disengaging forward from the fixed cylinder 3.

[0055] In some embodiments, such as Figures 5 to 9 As shown, the first tweezer arm 101 is provided with a clearance groove 104, and at least a portion of the radial direction of the fixing cylinder 3 is accommodated in the clearance groove 104.

[0056] By adopting the above technical solution, the avoidance groove 104 can reduce the size of the threading component protruding from the tweezer body 1, which helps to make the size of the tweezers with threading function smaller. In specific implementation, the avoidance groove 104 penetrates through the first tweezer arm 101 along the thickness direction of the first tweezer arm 101.

[0057] In some embodiments, such as Figures 5 to 7 , Figure 10 and Figure 11 As shown, the threading component 6 is a strip-shaped component, and the movable cylinder 4 is provided with two limiting spring arms 404 that act on both sides of the thickness direction of the threading component 6 respectively; the two limiting spring arms 404 are arranged opposite to each other. In specific implementation, the threading component 6 can be a metal strip-shaped component.

[0058] By adopting the above technical solution, two limiting spring arms 404 are set to limit the position of the front part of the thread threader 6, which helps to ensure that the thread threading part of the thread threader 6 is aligned with the eye of the sewing needle. In specific implementation, the movable cylinder 4 can be made of plastic, and the two limiting spring arms 404 and the movable cylinder 4 are integrally molded.

[0059] In some embodiments, such as Figure 11 As shown, the front end of the threading component 6 is provided with a pointed tip 603 that gradually tapers from back to front. Using the above technical solution, the pointed tip 603 is used to guide the threading part of the threading component 6 to align with the eye of the sewing needle, thereby improving the success rate of threading.

[0060] As a preferred example, in order to reduce the impact of the threading assembly on the function of the tweezers body 1, the threading assembly is installed on the side of the first tweezers arm 101 facing away from the second tweezers arm 102.

[0061] As a preferred example, such as Figures 1 to 3 , Figures 5 to 7 , Figure 10 As shown, the positioning opening 402 can be configured as a V-shaped opening that gradually narrows from front to back. In specific implementations, in order to allow the sewing thread to separate from the threading assembly after threading, a channel for the sewing thread to pass through can be provided between the positioning opening 402 and the side wall opening 403. After threading is completed, the sewing thread at the side wall opening 403 can be released from the movable tube 4 through this channel.

[0062] As a preferred example, such as Figure 11 As shown, the length of the hook groove 601 extends in the front-to-back direction, and the hook groove 601 penetrates the thread thread 6 along the thickness direction of the thread thread 6. An inlet 602 for the sewing thread to be inserted into the hook groove 601 is provided on the side of the opening 403 of the side wall at the front end of the hook groove 601.

[0063] As a specific example, such as Figures 1 to 11 As shown, the support base 2 is fixedly mounted on the first tweezer arm 101 by screws. The first tweezer arm 101 is provided with a first connecting hole 105 that mates with the screws, and the support base 2 is provided with a second connecting hole 201 that mates with the screws. Furthermore, in order to ensure the installation accuracy and stability of the support base 2, the first tweezer arm 101 is provided with a positioning hole 106, and the support base 2 is provided with a positioning pin 206 that mates with the positioning hole 106.

[0064] As a specific example, such as Figure 1 and Figure 2 As shown, for ease of operation, a recessed platform is provided at the rear of the support 2 for cooperating with the operator's fingers. The recessed platform includes a bottom surface 202 and a side surface 203 that curves forward and upward from the front edge of the bottom surface 202.

[0065] As a specific example, such as Figures 5 to 8 , Figure 10 and Figure 11 As shown, the front part of the support base 2 is provided with a connecting pin 204 and a peripheral wall surrounding the connecting pin 204. The fixing cylinder 3 is inserted into the annular groove between the connecting pin 204 and the peripheral wall. Furthermore, a slot 205 is provided on the connecting pin 204, and protrusions 604 extending radially into the annular groove are respectively provided on both sides of the rear end of the wire threading member 6. The ends of the two protrusions 604 contact the inner surface 203 of the peripheral wall, forming a limiting structure for limiting the rear end of the wire threading member 6.

[0066] As a specific example, such as Figure 2 and Figure 9 As shown, in order to avoid the first tweezer arm 101 from obstructing the insertion of the sewing thread into the side wall opening 403, an avoidance notch 103 is provided on the first tweezer arm 101 at a position corresponding to the side wall opening 403.

[0067] As a specific example, such as Figures 1 to 5 , Figure 9 As shown, the front ends of the first tweezer arm 101 and the second tweezer arm 102 are both clamping parts, and the rear ends of both the first tweezer arm 101 and the second tweezer arm 102 are connected to the tweezer handle. Furthermore, the front ends of both the first tweezer arm 101 and the second tweezer arm 102 gradually taper from back to front. In specific implementations, the specific structure of the tweezer body 1 can refer to the tweezer structure commonly used in the sewing field.

[0068] The above embodiments are merely preferred embodiments provided to fully illustrate the present utility model, and the protection scope of the present utility model is not limited thereto. Equivalent substitutions or modifications made by those skilled in the art based on the present utility model are all within the protection scope of the present utility model. In the description of this specification, the reference to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., means that a specific feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. Furthermore, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

Claims

1. A pair of tweezers with a threading function, characterized in that, It includes a tweezers body and a threading assembly. The tweezers body includes a first tweezers arm and a second tweezers arm that are arranged opposite each other. The length of the first tweezers arm is set along the front-back direction. The threading assembly includes a base, a movable cylinder, and a threading component. The threading component is connected to the base, and the front end of the threading component extends forward out of the base. The front end of the threading component is provided with a threading part for passing through the eye of a sewing needle, and the threading part is provided with a hook groove for hooking the sewing thread forward. The central axis of the movable cylinder extends in the front-back direction, and the front end of the movable cylinder is provided with a positioning port for cooperating with a sewing needle. The movable cylinder is connected to the base in a manner that allows it to move linearly back and forth between a first position and a second position. When the movable cylinder is in the first position, the threading part is located inside the cavity of the movable cylinder; When the movable cylinder moves to the second position, the threading part extends forward from the positioning port to drive the sewing thread hooked in the hook groove through the eye of the sewing needle.

2. The tweezers with threading function according to claim 1, characterized in that, The movable cylinder has a side wall opening, which forms a channel for the sewing thread on the outside of the movable cylinder to be inserted into the hook groove.

3. The tweezers with threading function according to claim 2, characterized in that, When the movable cylinder is in the first position, the side wall opening is exposed; when the movable cylinder is in the first position, the inlet of the hook groove is directly opposite the side wall opening, or when the movable cylinder is in the third position between the first position and the second position, the inlet of the hook groove is directly opposite the side wall opening; the side wall opening is a V-shaped notch.

4. The tweezers with threading function according to claim 1, characterized in that, The base includes a fixed cylinder with its central axis extending in the front-rear direction, and a movable cylinder that slides with the fixed cylinder. A circumferential fixing structure is provided between the fixed cylinder and the movable cylinder. When the movable cylinder is in the first position, the threading member is located in the space formed by the cavity of the fixed cylinder and the cavity of the movable cylinder.

5. The tweezers with threading function according to claim 4, characterized in that, The base also includes a support seat fixedly mounted on the first tweezer arm, the rear end of the fixing cylinder is connected to the support seat, and the rear end of the threading member is supported rearward on the support seat.

6. The tweezers with threading function according to claim 5, characterized in that, It also includes a spring for providing a restoring force for the movable cylinder to return from the second position to the first position; the rear end of the threading member is provided with a protrusion, the front end of the spring is supported forward on the movable cylinder, and the rear end of the spring is supported rearward on the protrusion; the support base is provided with a slot, and the rear end of the threading member includes an insertion part that mates with the slot.

7. The tweezers with threading function according to claim 4, characterized in that, The first tweezer arm is provided with a clearance groove, and at least a portion of the radial direction of the fixing cylinder is accommodated in the clearance groove.

8. The tweezers with threading function according to claim 1, characterized in that, The threading component is a strip-shaped component, and the movable cylinder is provided with two limiting spring arms that act on both sides of the threading component in the thickness direction; the two limiting spring arms are arranged opposite to each other.

9. The tweezers with threading function according to claim 1, characterized in that, The front end of the threading component is provided with a pointed tip that gradually tapers from back to front.

10. The tweezers with threading function according to claim 1, characterized in that, The threading assembly is installed on the side of the first tweezers arm facing away from the second tweezers arm.

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