Injection needle and boosting device assembling structure

Abstract

The utility model relates to the field and particularly discloses an injection needle and boosting device assembling structure which comprises an injection needle and a boosting device, the injection needle comprises an injection base and a liquid injection screw, the liquid injection screw is in limited sliding connection with the injection base, the boosting device comprises a boosting push plate and a boosting push rod, and the boosting push rod pushes the boosting push plate to slide in a limited mode. The boosting push plate is provided with a limiting groove, a fixing protrusion is arranged on the groove wall of the limiting groove, the liquid injection screw comprises an injection pipe and a limiting protrusion, the limiting protrusion is fixedly arranged on the outer wall of the injection pipe, the limiting protrusion is matched with the limiting groove in shape, and the limiting protrusion is provided with a fixing groove matched with the fixing protrusion in shape. According to the utility model, the boosting push plate and the liquid injection screw rod are provided with the fixed groove and the fixed bulge for limiting, so that the rotation of the injection needle on the boosting device is limited, and the injection precision is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the field of beauty equipment, in particular to an injection needle and a booster device structure. Background Art

[0002] Sterile injection needles are usually used in skin beauty. The sterile injection needle is inserted into the skin through the front pillow to inject liquid into the dermis. The skin injection pump has a main unit and a handheld booster device. The sterile injection needle is placed on the handheld booster device. A push rod and a push plate are provided in the handheld booster device. The sterile injection needle is set on the push plate. The handheld booster device pushes the push plate to achieve sterile injection of liquid. The sterile injection needle is connected with the annular groove on the push plate. However, during the use of the handheld booster device, the sterile injection needle will rotate. If the sterile injection needle and the annular groove are interference fit, the annular groove will be deformed for a long time, resulting in failure of the connection between the sterile injection needle and the annular groove.

[0003] The technical problem to be solved by the present application is: how to prevent a sterile injection needle from rotating on a handheld booster device. Utility Model Content

[0004] In order to overcome the deficiencies of the prior art, the utility model aims to provide an assembly structure of an injection needle and a booster device.

[0005] The technical solution adopted by the utility model is: an injection needle and a booster device assembly structure, including an injection needle and a booster device, the injection needle includes an injection base and an injection screw, the injection screw is connected to the injection base in a limited sliding manner, the booster device includes a booster push plate and a booster push rod, the booster push rod pushes the booster push plate to limit and slide, the booster push plate is provided with a limiting groove, the groove wall of the limiting groove is provided with a fixed protrusion, the injection screw includes an injection tube and a limiting protrusion, the limiting protrusion is fixedly arranged on the outer wall of the injection tube, the limiting protrusion is matched with the limiting groove in shape, and the limiting protrusion is provided with a fixing groove matched with the shape of the fixed protrusion.

[0006] In some embodiments, the booster plate is provided with an annular groove, the fixing protrusion is connected to the groove wall of the annular groove, and the groove diameter of the annular groove is consistent with the diameter of the injection tube.

[0007] In some embodiments, the boosting device includes a boosting base, and the boosting push plate and the boosting push rod are arranged on the boosting base.

[0008] In some embodiments, the axial direction of the fixing protrusion is consistent with the axial direction of the limiting groove.

[0009] In some embodiments, the diameter of the limiting groove is larger than the diameter of the annular groove.

[0010] The beneficial effects of the present utility model are:

[0011] The assembly structure of the injection needle and the booster device limits the rotation of the injection needle on the booster device by arranging limited fixing grooves and fixing protrusions on the booster push plate and the injection screw, thereby avoiding affecting the injection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the local structure of the booster device;

[0014] Figure 3 Schematic diagram of the structure of the injection needle.

[0015] The numbers and names in the figure correspond to each other as follows: 1. injection needle; 2. booster device; 11. injection base; 12. injection screw; 121. injection tube; 122. limiting protrusion; 123. fixing groove; 21. booster base; 22. booster push plate; 23. booster push rod; 221. limiting groove; 222. annular groove; 223. fixing protrusion. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1 The utility model provides a technical solution: an injection needle 1 and a booster device 2 structure, including an injection needle 1 and a booster device 2.

[0018] The injection needle 1 comprises an injection base 11 and an injection screw 12, and the injection screw 12 is connected to the injection base 11 in a limited sliding manner. The boosting device 2 comprises a boosting base 21, a boosting push plate 22 and a boosting push rod 23, and the boosting push plate 22 and the boosting push rod 23 are arranged on the boosting base 21, and the boosting push rod 23 pushes the boosting push plate 22 to slide in the limited position on the boosting base 21.

[0019] See also Figure 2 The booster plate 22 is provided with a limiting groove 221 and an annular groove 222. The limiting groove 221 and the annular groove 222 are connected. The groove diameter of the limiting groove 221 is larger than the groove diameter of the annular groove 222, which is convenient for the injection screw 12 to be placed therein. The groove wall of the limiting groove 221 is provided with a fixing protrusion 223. The axial direction of the fixing protrusion 223 is consistent with the axial direction of the limiting groove 221. The fixing protrusion 223 is connected to the groove wall of the annular groove 222 to better support the injection needle 1.

[0020] See also Figure 3 The injection screw 12 includes an injection tube 121 and a limiting protrusion 122. The limiting protrusion 122 is arranged at one end of the injection tube 121 away from the injection base 11. The limiting protrusion 122 is fixedly arranged on the outer wall of the injection tube 121. The limiting protrusion 122 is an annular structure. The diameter of the limiting protrusion 122 is consistent with the groove diameter of the limiting groove 221. The limiting protrusion 122 and the limiting groove 221 are matched in shape. The groove diameter of the annular clamping groove 222 is consistent with the diameter of the injection tube 121. The annular clamping groove 222 and the injection tube 121 are matched in shape. The limiting protrusion 122 is provided with a fixing groove 123 that matches the fixing protrusion 223 in shape.

[0021] When the injection needle 1 is placed on the booster device 2 , the limiting protrusion 122 needs to be connected to the limiting groove 221 , and the fixing protrusion 223 needs to be connected to the fixing groove 123 , so as to limit the rotation of the injection tube 121 .

[0022] Finally, it should be noted that the above are only preferred examples of the utility model and are not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An injection needle and booster device assembly structure, comprising an injection needle (1) and a booster device (2), characterized in that: The injection needle (1) comprises an injection base (11) and an injection screw (12), the injection screw (12) and the injection base (11) are connected to each other in a limited sliding manner, the boosting device (2) comprises a boosting push plate (22) and a boosting push rod (23), the boosting push rod (23) pushes the boosting push plate (22) to slide in a limited manner, the boosting push plate (22) is provided with a limited groove (221), the groove wall of the limited groove (221) is provided with a fixed protrusion (223), the injection screw (12) comprises an injection tube (121) and a limited protrusion (122), the limited protrusion (122) is fixedly arranged on the outer wall of the injection tube (121), the limited protrusion (122) is matched in shape with the limited groove (221), and the limited protrusion (122) is provided with a fixed groove (123) matched in shape with the fixed protrusion (223).

2. The assembly structure of the injection needle and the booster device according to claim 1, characterized in that: The boosting plate (22) is provided with an annular groove (222), the fixing protrusion (223) is connected to the groove wall of the annular groove (222), and the groove diameter of the annular groove (222) is consistent with the diameter of the injection tube (121).

3. The assembly structure of the injection needle and the booster device according to claim 1, characterized in that: The boosting device (2) comprises a boosting base (21), and a boosting push plate (22) and a boosting push rod (23) are arranged on the boosting base (21).

4. The assembly structure of the injection needle and the booster device according to claim 1, characterized in that: The axial direction of the fixing protrusion (223) is consistent with the axial direction of the limiting groove (221).

5. The assembly structure of the injection needle and the booster device according to claim 2, characterized in that: The groove diameter of the limiting groove (221) is greater than the groove diameter of the annular clamping groove (222).

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