Tattooing needle
By improving the outer shell structure and guide sleeve design of the tattoo needle, the problems of complex molds, low assembly efficiency, and oscillation resonance during high-speed operation in the existing technology have been solved, achieving the effects of reduced cost, convenient assembly, and smooth ink output.
Patent Information
- Application Number
- CN202520264367.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-19
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-02-19
AI Technical Summary
Existing tattoo needles have complex and costly structures, low assembly efficiency, and are prone to wobbling and resonance during high-speed operation, affecting ink flow.
The outer shell is composed of two injection-molded halves, with a front positioning guide sleeve and a rear positioning guide sleeve inside. An elastic rubber sleeve is located in front of the front positioning guide sleeve. The guide sleeve guides and cooperates with the needle body. The inner wall of the outer shell and the guide sleeve are provided with concave and convex positioning structures. The elastic rubber sleeve divides the inner cavity into front and rear spaces. The front part contains ink, and the rear part can be filled with lubricant.
It reduces mold costs, improves assembly efficiency, reduces needle oscillation and resonance, enhances ink flow smoothness and operating quality, and avoids ink and lubricant mixing and contamination.
Smart Images
Figure CN223887243U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a tattoo needle / eyebrow tattoo needle / beauty needle. Background Technology
[0002] With the popularization of tattoo culture and the continuous increase in consumer demand, the tattoo needle market will continue its growth trend. Mechanical tattoo needles, in particular, are increasingly favored by tattoo artists due to their speed and precision. At the same time, the application areas of tattoo needles are constantly expanding, gradually extending beyond the tattoo industry to fields such as beauty and medicine.
[0003] The existing tattoo needle structure, a representative example of which can be found in utility model patent CN 204798627 U, consists of an outer tube and a needle body located inside the outer tube. The front end of the outer tube is tapered and elongated, with an injection port on its side wall for injecting ink into the inner cavity. The end of the outer tube has a circular cap, with a hole at the center of the cap for the needle body to pass through. An elastic sleeve, conical in shape, is located inside the outer tube. One end of the elastic sleeve is sealed to the cap or the side wall of the outer tube's inner cavity, and the other end is sealed to the needle body, creating a one-sided closed space inside the outer tube. This tattoo needle structure is commonly used in the market and has become a mainstream product. It features integrated injection molding assembly and is convenient to use, but it still has the following drawbacks:
[0004] 1. The outer tube structure makes the mold structure complex and the cost not low;
[0005] 2. The needle body can only be inserted from the tail of the outer tube, which can easily damage the needle tip and result in low assembly efficiency.
[0006] 3. The elastic sleeve is located at the end of the outer tube, meaning the entire outer tube is filled with ink. If a guide is provided for the needle body in the middle of the outer tube, it will make a sound and affect the smoothness of ink flow. Therefore, a guide cannot be provided in the middle of the outer tube. Instead, the hole on the circular cap at the end of the outer tube is designed as a guide that fits tightly with the needle body. However, this design means that there is only one guide along the length of the needle body, which causes the needle to swing and resonate when running at high speed. Utility Model Content
[0007] The purpose of this invention is to provide a tattoo needle.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a tattoo needle, comprising a shell, a needle body, and an elastic sleeve, wherein the needle body is inserted into the shell in a front-to-back direction, and the needle body includes a needle shaft at the front end and a needle shank at the rear end; a front positioning guide sleeve and a rear positioning guide sleeve are positioned or integrally connected within the shell, the front and rear positioning guide sleeves are spaced apart front to back, and both the front and rear positioning guide sleeves are guided and cooperate with the needle shank of the needle body; furthermore, the elastic sleeve is disposed on the front side of the front positioning guide sleeve within the shell, the front end of the elastic sleeve is fitted onto the needle shank to form a sealed connection, and the rear end of the elastic sleeve is fitted onto the front positioning guide sleeve to form a sealed connection.
[0009] In the above scheme, the outer shell is formed by two injection-molded halves joined and sealed together radially; the front positioning guide sleeve and the rear positioning guide sleeve are fitted between the two injection-molded halves, and a concave-convex positioning structure is provided between the front positioning guide sleeve and the rear positioning guide sleeve and the inner wall of the outer shell.
[0010] Furthermore, the concave-convex positioning structure is formed by the cooperation of a slot and a positioning protrusion. In the inner wall of the outer shell and the front positioning guide sleeve, one has a slot and the other has a positioning protrusion; and in the inner wall of the outer shell and the rear positioning guide sleeve, one has a slot and the other has a positioning protrusion. Even further, the positioning protrusion is a circumferentially oriented rib, and the slot is an annular groove matching the shape of the rib. Preferably, the cross-sectional shape of the rib is triangular.
[0011] In the above scheme, the outer shell is composed of multiple shell segments connected in the axial direction, and the front positioning guide sleeve and the rear positioning guide sleeve are integrally connected and disposed inside the shell.
[0012] In the above solution, the rear end of the elastic sleeve extends into a tapered flared section, and the front end of the front positioning guide sleeve is correspondingly provided with a tapered section, which is embedded in the tapered flared section for connection. Furthermore, the front positioning guide sleeve has an annular groove behind the tapered section, and the rear end of the elastic sleeve is fixedly positioned within this annular groove.
[0013] In the above scheme, the front end of the outer shell is a conical tip, and the inner wall of the conical tip is provided with an inner spiral groove or a circumferential groove.
[0014] In the above scheme, the front end of the outer shell is provided with multiple grooves extending along the axial direction of the needle body, so that the front end of the outer shell forms a split multi-lobed structure, and the inner wall of the multi-lobed structure contacts and engages with the needle body.
[0015] The advantages of this utility model are as follows:
[0016] 1. This utility model is equipped with a front positioning guide sleeve and a rear positioning guide sleeve to guide the needle body at two points, which reduces the needle body swing and resonance phenomenon during high-speed operation.
[0017] 2. This utility model places an elastic sleeve on the front side of the front positioning guide sleeve inside the outer shell. The elastic sleeve divides the inner cavity of the outer shell into a sealed front space and a rear space. The front space contains ink, while solid lubricant can be appropriately added to the front and rear positioning guide sleeves in the rear space. This reduces the coefficient of friction between the needle bar and the guide sleeve, lowers noise, and improves operational quality. Simultaneously, the ink pigment in the front space will not mix or contaminate with the lubricant in the rear space. Attached Figure Description
[0018] Figure 1 This is a schematic front view of the structure of Embodiment 1 of this utility model;
[0019] Figure 2 for Figure 1 Exploded view of the components;
[0020] Figure 3 for Figure 1 A top-view sectional diagram;
[0021] Figure 4 This is an exploded view of the structural components of Embodiment 2 of this utility model.
[0022] In the attached diagrams above:
[0023] 1. Outer shell; 11. Injection-molded half; 112. Spiral groove or circumferential groove; 113. Groove body; 12. Front shell; 13. Middle shell; 14. Rear shell; 15. Thickened part;
[0024] 2. Needle body; 21. Needle shaft; 22. Needle shank;
[0025] 3. Elastic rubber sleeve; 31. Tapered flared section;
[0026] 4. Front positioning guide sleeve; 41. Tapered section; 42. Annular groove;
[0027] 5. Rear positioning guide sleeve;
[0028] A. Card slot; B. Positioning protrusion. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0030] The present invention will be clearly described below with illustrations and detailed description. Any person skilled in the art who understands the embodiments of the present invention can make changes and modifications based on the technology taught in the present invention without departing from the spirit and scope of the present invention.
[0031] The terminology used herein is for the purpose of describing specific embodiments only and is not intended to limit the scope of this work. Singular forms such as “a,” “this,” “this,” “the,” and “the” as used herein also include plural forms.
[0032] The terms "connection" or "positioning" as used in this article can refer to two or more components or devices making direct physical contact with each other, or making indirect physical contact with each other, or to two or more components or devices operating or moving with each other.
[0033] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.
[0034] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.
[0035] The terms “front,” “back,” “up,” and “down” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not used to limit the specific direction of the protection scheme and its actual implementation.
[0036] Example 1: See Figures 1-3 As shown, a type of tattoo needle:
[0037] The tattoo needle includes a shell 1, a needle body 2, and an elastic rubber sleeve 3. The needle body 2 is inserted into the shell 1 in the front-to-back direction. The needle body 2 includes a needle body 21 at the front end and a needle shaft 22 at the rear end. The needle body 21 at the front end and the needle shaft 22 at the rear end can be glued together. The needle body 21 can contain one or more needle bundles as needed. It is usually made of medical-grade stainless steel, while the needle shaft 22 is usually made of plastic.
[0038] See Figures 1-3 As shown, the outer shell 1 is composed of two injection-molded halves 11 joined together in the radial direction. On the joint surface of the two injection-molded halves 11, one has a positioning pin and the other has a corresponding positioning groove. The two injection-molded halves 11 are joined together by positioning pin and positioning hole, and a sealed connection is achieved at the joint by welding or gluing.
[0039] See details Figures 1-3 As shown, the front end of the outer shell 1 is provided with a thickening part 15 to increase the wall thickness of the two injection-molded halves 11 at the front end, that is, to increase the splicing surface area of the two, so as to set a positioning pin and a positioning groove at the thickening part 15.
[0040] See Figures 1-3As shown, a front positioning guide sleeve 4 and a rear positioning guide sleeve 5 are positioned and connected inside the outer shell 1. The front positioning guide sleeve 4 and the rear positioning guide sleeve 5 are positioned at a distance from each other. Both the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 are guided and engaged with the needle bar 22 of the needle body 2.
[0041] See Figures 1-3 As shown, the elastic sleeve 3 is disposed on the front side of the front positioning guide sleeve 4 inside the housing. The front end of the elastic sleeve 3 is fitted onto the needle bar 22 to form a sealed connection, while the rear end of the elastic sleeve 3 is fitted onto the front positioning guide sleeve 4 to form a sealed connection.
[0042] See Figure 2 and Figure 3 As shown, the rear end of the elastic rubber sleeve 3 extends into a tapered flared section 31, while the front end of the front positioning guide sleeve 4 is correspondingly provided with a tapered section 41, which is embedded in the tapered flared section 31 for connection. The front positioning guide sleeve 4 has an annular groove 2 behind the tapered section 41, and the rear end of the elastic rubber sleeve 3 is fixedly placed in the annular groove 42.
[0043] See Figure 2 and Figure 3 As shown, the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 are assembled between two injection-molded halves 11, and a concave-convex positioning structure is provided between the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 and the inner wall of the outer shell 1.
[0044] See Figure 2 and Figure 3 As shown, the concave-convex positioning structure is formed by the cooperation of a slot A and a positioning protrusion B. In the inner wall of the outer shell 1 and the front positioning guide sleeve 4, one has a slot A and the other has a positioning protrusion B; and in the inner wall of the outer shell 1 and the rear positioning guide sleeve 5, one has a slot A and the other has a positioning protrusion B. Specifically... Figure 2 , Figure 3 For example, a positioning protrusion B is provided on the front positioning guide sleeve 4, and a corresponding slot A is provided on the inner wall of the outer shell 1; a slot A is provided on the rear positioning guide sleeve 5, and a corresponding positioning protrusion B is provided on the inner wall of the outer shell 1. Specifically, the positioning protrusion B is a circumferentially oriented rib, and the slot A is an annular groove matching the shape of the rib. Preferably, as shown in the figure, the cross-sectional shape of the rib is triangular.
[0045] See Figure 2 and Figure 3 As shown, the front end of the outer shell 1 is a tapered tip, and the inner wall of the tapered tip is provided with an inner spiral groove or circumferential groove 112 to accommodate more ink.
[0046] See Figure 2 and Figure 3As shown, the front end of the outer shell 1 is provided with a plurality of grooves 113 extending along the axial direction of the needle body 2, so that the front end of the outer shell 1 forms a split multi-lobed structure.
[0047] The above embodiments have the following advantages:
[0048] 1. In this embodiment, the hand gripping position is more comfortable during operation, and the threaded design on the outer surface of the outer shell increases the friction at the gripping position.
[0049] 2. In this embodiment, the outer shell is designed as two injection-molded halves joined together radially, reducing mold opening costs and making assembly more convenient: for example... Figure 2 As shown, first assemble the needle body 2, then put the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 on the needle body 2, and then put them together into an injection-molded half body 11. Align the slot A and the positioning protrusion B, and then put on another injection-molded half body 11. Then, weld or glue the connection. This effectively avoids the needle tip being bumped and damaged during assembly, improves the yield, and is also more convenient for the design and processing of future automated assembly solutions.
[0050] 3. The inner wall of the front end of the outer shell 1 is provided with an inner spiral groove or circumferential groove 112, which increases the storage space of pigment, allowing the pigment ink to flow slowly downward along the spiral groove, and the pigment flows out more smoothly along the spiral channel.
[0051] 4. The split, multi-lobed structure formed at the front end of the outer shell 1 makes the gap between the front port of the outer shell 1 and the needle body 2 smaller, allowing the pigment to flow out slowly along the groove 113, which is smooth and not sprayed.
[0052] 5. In this embodiment, a front positioning guide sleeve 4 and a rear positioning guide sleeve 5 are provided to guide the needle body 2 at two points, making the linear motion more stable and reducing the swaying of the needle body 2 and the resonance phenomenon during high-speed operation.
[0053] 6. In this embodiment, the elastic sleeve 3 is set on the front side of the front positioning guide sleeve 4 inside the outer shell 1. The inner cavity of the outer shell 1 is divided into a sealed front space and a rear space by the elastic sleeve 3. The front space contains the pigment ink, while the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 in the rear space can be appropriately added with solid lubricant to make the friction coefficient between the needle bar 22 and the guide sleeve smaller, reduce noise, and improve the running quality. At the same time, the pigment ink in the front space and the lubricant in the rear space will not mix and contaminate each other.
[0054] 7. Positioning pins and positioning holes are designed on each of the two injection-molded halves 11. The upper and lower covers are fixed into a whole by ultrasonic welding or bonding process.
[0055] 8. Two injection-molded halves can be combined in any two colors to improve the appearance quality.
[0056] Example 2: See Figure 4 As shown, a type of tattoo needle:
[0057] The tattoo needle includes a shell 1, a needle body 2, and an elastic sleeve 3. The difference from Embodiment 1 is that the shell 1 is composed of multiple shell segments connected axially, and the front positioning guide sleeve 4 and the rear positioning guide sleeve 5 are integrally connected and disposed inside the shell. Specifically, as shown... Figure 4 For example, the outer shell 1 is formed by connecting the front shell 12, the middle shell 13 and the rear shell 14 in the axial direction. The front positioning guide sleeve 4 is integrally connected and disposed inside the middle shell 13, and the rear positioning guide sleeve 5 is integrally connected and disposed inside the rear shell 14.
[0058] The rest is the same as in Example 1, and will not be repeated here.
[0059] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.
Claims
1. A tattoo needle, comprising a casing (1), a needle body (2), and an elastic sleeve (3), wherein the needle body (2) is inserted into the casing (1) in a front-to-back direction, and the needle body (2) comprises a needle shaft (21) at the front end and a needle shank (22) at the rear end; characterized in that: The outer shell (1) is internally positioned and connected or integrally connected to a front positioning guide sleeve (4) and a rear positioning guide sleeve (5). The front positioning guide sleeve (4) and the rear positioning guide sleeve (5) are positioned at a distance from each other. The front positioning guide sleeve (4) and the rear positioning guide sleeve (5) are both guided and cooperated with the needle bar (22) of the needle body (2). Furthermore, the elastic sleeve (3) is disposed inside the outer shell on the front side of the front positioning guide sleeve (4). The front end of the elastic sleeve (3) is fitted onto the needle bar (22) to form a sealed connection, while the rear end of the elastic sleeve (3) is fitted onto the front positioning guide sleeve (4) to form a sealed connection.
2. The tattoo needle according to claim 1, characterized in that: The outer shell (1) is formed by two injection-molded halves (11) being joined and sealed together in the radial direction; the front positioning guide sleeve (4) and the rear positioning guide sleeve (5) are assembled between the two injection-molded halves (11), and a concave-convex positioning structure is provided between the front positioning guide sleeve (4) and the rear positioning guide sleeve (5) and the inner wall of the outer shell (1).
3. The tattoo needle according to claim 1, characterized in that: The outer shell (1) is composed of multiple shell segments connected in the axial direction, and the front positioning guide sleeve (4) and the rear positioning guide sleeve (5) are integrally connected and disposed inside the shell.
4. The tattoo needle according to claim 2 or 3, characterized in that: The rear end of the elastic rubber sleeve (3) extends into a tapered flared section (31), and the front end of the front positioning guide sleeve (4) is provided with a corresponding tapered section (41), which is embedded in the tapered flared section (31) for connection.
5. The tattoo needle according to claim 4, characterized in that: The front positioning guide sleeve (4) has an annular groove (42) behind the tapered section (41), and the rear end port of the elastic rubber sleeve (3) is fixed in the annular groove (42).
6. The tattoo needle according to claim 2, characterized in that: The concave-convex positioning structure is formed by the cooperation of a slot (A) and a positioning protrusion (B). In the inner wall of the outer shell (1) and the front positioning guide sleeve (4), one is provided with a slot (A) and the other is provided with a positioning protrusion (B); and in the inner wall of the outer shell (1) and the rear positioning guide sleeve (5), one is provided with a slot (A) and the other is provided with a positioning protrusion (B).
7. The tattoo needle according to claim 6, characterized in that: The positioning protrusion (B) is a rib arranged circumferentially, and the slot (A) is an annular groove that matches the shape of the rib.
8. The tattoo needle according to claim 7, characterized in that: The cross-sectional shape of the rib is triangular.
9. The tattoo needle according to claim 1, 2, or 3, characterized in that: The front end of the outer shell (1) is a conical tip, and the inner wall of the conical tip is provided with an inner spiral groove or a circumferential groove (112).
10. The tattoo needle according to claim 1, 2, or 3, characterized in that: The front end of the outer shell (1) is provided with a plurality of grooves (113) extending along the axial direction of the needle body (2) so that the front end of the outer shell (1) forms a split multi-lobed structure.