A replaceable tip whitening gel pen

Abstract

The utility model discloses a whitening gel pen of replaceable pen head, the utility model discloses a pen body and protection cover, the pen body includes storage container and fixed cylinder, the storage container is away from the outer wall of one end of smearing head and is provided with the thread bush, and the thread bush is connected with the outer wall screw thread of fixed cylinder inner wall, the fixed cylinder inner wall slidingly connects with the moving hollow rod, and the fixed cylinder inner wall is provided with the guide slot, and the moving hollow rod is fixedly connected with the moving block on the outer wall of one end away from the storage container, and the moving block is limitedly slidably connected with the guide slot inner wall, one end of the fixed cylinder rotatably connects with the rotating block, the rotating block one end outer wall fixedly connected with the thread rod, and the thread rod is connected with the inner wall screw thread of moving hollow rod, the utility model discloses, through being provided with moving hollow rod, guide slot, moving block, thread rod and rotating block, can slowly extrude the gel in storage container and control extrusion amount, avoid the waste caused by one -time large -scale extrusion.

Description

Technical Field

[0001] This utility model relates to the field of teeth whitening technology, and in particular to a whitening gel pen with a replaceable pen tip. Background Technology

[0002] As people's pursuit of beauty continues to increase, teeth whitening has gradually become a common cosmetic need. Teeth whitening gel, as a more direct and effective whitening method, has been widely used in the field of cosmetic dentistry. When using teeth whitening gel, it needs to be applied with a whitening gel pen.

[0003] A search revealed a Chinese patent publication number CN222804383U, which discloses a teeth whitening agent application device, including a cylindrical body. A push rod is fitted inside the cylindrical body, and a rubber stopper is fixedly installed at the bottom end of the push rod. A nozzle is fixedly installed at the bottom end of the cylindrical body, and a connecting tube is fixedly installed at the bottom end of the nozzle. This patent allows for the replacement of the application head, enabling the use of different application heads according to different people's oral cavity size and tooth shape.

[0004] However, since it pushes the gel out by a pusher, the amount of gel dispensed depends entirely on the force and stroke of the pusher, making it difficult to control precisely and easily resulting in too much gel being dispensed at once, causing waste. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a whitening gel pen with a replaceable pen tip.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A whitening gel pen with a replaceable tip includes a pen body and a protective cap. The pen body includes a storage cylinder and a fixed cylinder. A threaded sleeve is provided on the outer wall of the end of the storage cylinder away from the application head. The threaded sleeve is threadedly connected to the inner and outer walls of the fixed cylinder. A movable hollow rod is slidably connected to the inner wall of the fixed cylinder. A guide groove is provided on the inner wall of the fixed cylinder. A movable block is fixedly connected to the outer wall of the end of the movable hollow rod away from the storage cylinder. The movable block is limited and slidably engaged with the inner wall of the guide groove. A rotating block is rotatably connected to one end of the fixed cylinder. A threaded rod is fixedly connected to the outer wall of one end of the rotating block. The threaded rod is threadedly connected to the inner wall of the movable hollow rod.

[0008] As a further embodiment of this utility model: one end of the storage cylinder is connected to an application head via a thread, and the storage cylinder and the application head are connected in communication; the protective cover is snapped to the outer wall of one end of the storage cylinder.

[0009] As a further improvement of this utility model: a sliding cavity is provided inside the rotating block, and ball heads are slidably connected to both ends of the sliding cavity.

[0010] As a further improvement of this utility model: an elastic element is provided inside the sliding cavity, and the two ends of the elastic element are respectively connected to two ball heads.

[0011] As a further improvement of this utility model: the inner wall of the fixed cylinder is provided with a plurality of circumferentially arranged arc-shaped grooves, and the ball head is matched with the arc-shaped grooves for limiting.

[0012] As a further improvement of this utility model: the protective cover is fixedly connected to a shell, and a pull-out box is slidably connected to the inner wall of the shell.

[0013] As a further improvement of this utility model, the side wall of the pull-out box is provided with multiple receiving slots for storing the application head.

[0014] Compared with the prior art, this utility model provides a whitening gel pen with a replaceable pen tip, which has the following beneficial effects:

[0015] 1. This utility model, by providing a movable hollow rod, a guide groove, a moving block, a threaded rod, and a rotating block, can slowly extrude the gel in the storage cylinder and control the extrusion amount, avoiding waste caused by extruding a large amount at once.

[0016] 2. This utility model, by incorporating an arc-shaped groove, a ball head, a sliding cavity, and an elastic element, provides a tactile feedback to the user at each rotation angle, allowing the user to accurately determine the rotation range of the block. Furthermore, the rotation of the block encounters resistance, limiting its speed.

[0017] 3. This utility model, by providing a shell and a pull-out box, can store multiple different types of application heads, eliminating the need for additional storage of spare application heads, making it convenient to carry.

[0018] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a whitening gel pen with a replaceable pen tip proposed in this utility model.

[0020] Figure 2 This is a schematic diagram of the internal structure of a whitening gel pen with a replaceable pen tip proposed in this utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the rotating block and the fixed cylinder of a whitening gel pen with a replaceable pen tip proposed in this utility model.

[0022] Figure 4 This is a partial structural diagram of a whitening gel pen with a replaceable pen tip proposed in this utility model.

[0023] In the diagram: 1. Pen body; 2. Protective cap; 3. Storage cylinder; 4. Application head; 5. Fixed cylinder; 6. Moving hollow rod; 7. Guide groove; 8. Moving block; 9. Threaded rod; 10. Rotating block; 11. Arc groove; 12. Ball head; 13. Sliding cavity; 14. Elastic element; 15. Rubber sleeve; 16. Threaded sleeve; 17. Housing; 18. Pull-out box. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Example 1

[0027] A whitening gel pen with replaceable tip, such as Figures 1 to 4 As shown, the pen includes a pen body 1 and a protective cap 2. The pen body 1 includes a storage cylinder 3 and a fixed cylinder 5. One end of the storage cylinder 3 is connected to an applicator head 4 via a thread, and the storage cylinder 3 and the applicator head 4 are in communication. The protective cap 2 is snapped to the outer wall of one end of the storage cylinder 3. A threaded sleeve 16 is provided on the outer wall of the end of the storage cylinder 3 away from the applicator head 4. The threaded sleeve 16 is threaded to the inner and outer walls of the fixed cylinder 5. A movable hollow rod 6 is slidably connected to the inner wall of the fixed cylinder 5. A guide groove 7 is provided on the inner wall of the fixed cylinder 5. A movable block 8 is fixedly connected to the outer wall of the end of the movable hollow rod 6 away from the storage cylinder 3. The movable block 8 is limited and slidably engaged with the inner wall of the guide groove 7. A rotating block 10 is rotatably connected to one end of the fixed cylinder 5. A threaded rod 9 is fixedly connected to the outer wall of one end of the rotating block 10. The threaded rod 9 is threaded to the inner wall of the movable hollow rod 6. A rubber sleeve 15 is fixedly connected to the outer wall of one end of the movable hollow rod 6. The rubber sleeve 15 is slidably engaged with the inner wall of the storage cylinder 3.

[0028] The rotating block 10 has a sliding cavity 13 inside, and ball heads 12 are slidably connected to both ends of the sliding cavity 13. An elastic element 14 is provided inside the sliding cavity 13, and the two ends of the elastic element 14 are respectively connected to the two ball heads 12. The inner wall of the fixed cylinder 5 has a plurality of circumferentially arranged arc grooves 11, and the ball heads 12 are limited to the arc grooves 11.

[0029] During use, remove the protective cover 2, rotate the rotating block 10, which drives the threaded rod 9 to rotate. The threaded rod 9 drives the moving hollow rod 6 to move linearly along the guide groove 7. The moving hollow rod 6 pushes the rubber sleeve 15 to squeeze the whitening gel in the storage cylinder 3, extruding the whitening gel. Since the thread pitch of the threaded rod 9 is constant, the gel in the storage cylinder 3 can be slowly extruded and the extrusion amount can be controlled by controlling the number of rotations and the angle of the threaded rod 9. During the rotation of the rotating block 10, the ball head 12 will be squeezed into the sliding cavity 13 by the arc groove 11, and the elasticity... When the ball head 12 is aligned with another arc groove 11, the elastic element 14 will push the ball head 12 into the arc groove 11. Then the ball head 12 will be squeezed and compressed into the sliding cavity 13. Therefore, when the rotating block 10 rotates, the finger will feel a segmented feeling every time it rotates a certain angle, giving the user obvious feedback, which makes it easy for the user to determine the rotation range of the rotating block 10. The rotation of the rotating block 10 will be subject to a certain resistance, which limits the rotation speed of the rotating block 10. The fixed cylinder 5 and the storage cylinder 3 can be separated for filling the whitening gel into the storage cylinder 3.

[0030] By incorporating a movable hollow rod 6, a guide groove 7, a movable block 8, a threaded rod 9, and a rotating block 10, the gel in the storage cylinder 3 can be slowly extruded and the extrusion amount can be controlled to avoid waste caused by a large amount of extrusion at once.

[0031] With the addition of an arc groove 11, a ball head 12, a sliding cavity 13, and an elastic element 14, the rotating block 10 provides a distinct feedback to the user by allowing the user to determine the rotation range of the rotating block 10 at each rotation angle. The rotation of the rotating block 10 is subject to a certain resistance, which limits the rotation speed of the rotating block 10.

[0032] Example 2

[0033] A whitening gel pen with a replaceable tip, this embodiment is based on embodiment 1 with the following improvements, such as... Figure 1 , Figure 2 As shown, the protective cover 2 is fixedly connected to the side wall of the housing 17, and the inner wall of the housing 17 is slidably connected to the pull box 18. The side wall of the pull box 18 is provided with multiple receiving slots for storing the application head 4. The outer wall of one end of the pull box 18 and the inner wall of one end of the housing 17 are provided with elastic rubber protrusions that limit each other.

[0034] When in use, since the applicator 4 is threadedly connected to the storage cylinder 3, the applicator 4 can be removed as needed, the pull-out box 18 can be pulled out from the housing 17, the required applicator 4 can be taken out from the multiple receiving slots and connected to the storage cylinder 3. The pull-out box 18 can store multiple different types of applicator 4, and there is no need to store spare applicator 4. It is convenient to carry. When the pull-out box 18 is inserted into the housing 17, the two elastic rubber protrusions squeeze each other and use friction to fix the pull-out box 18.

[0035] With the housing 17 and pull-out box 18, multiple different types of applicator heads 4 can be stored, eliminating the need to store spare applicator heads 4, making it convenient to carry.

[0036] Working principle: When in use, remove the protective cover 2, remove the application head 4 as needed, pull out the pull-out box 18 from the housing 17, take out the required application head 4 from the multiple receiving slots and connect it to the storage cylinder 3, rotate the rotating block 10, which drives the threaded rod 9 to rotate. The threaded rod 9 drives the moving hollow rod 6 to move linearly along the guide groove 7. The moving hollow rod 6 pushes the rubber sleeve 15 to squeeze the whitening gel in the storage cylinder 3, extruding the whitening gel. Since the thread pitch of the threaded rod 9 is constant, the gel in the storage cylinder 3 can be slowly extruded and the extrusion amount controlled by controlling the number of rotations and angle of the threaded rod 9. During the rotation of the rotating block 10, the ball head 12 will be squeezed into the sliding cavity 13 by the arc groove 11, and the elastic element 14 will be compressed and deformed. When the ball head 12 is aligned with another arc groove 11, the elastic element 14 will push the ball head 12 into the arc groove 11. Then the ball head 12 will be squeezed and compressed into the sliding cavity 13. Therefore, when the rotating block 10 rotates, the finger will feel a segmented feeling every time it rotates a certain angle, giving the user obvious feedback and making it easy for the user to determine the rotation range of the rotating block 10. The rotation of the rotating block 10 will be subject to a certain resistance, limiting the rotation speed of the rotating block 10. The pull-out box 18 can store multiple different types of application heads 4, eliminating the need to store spare application heads 4, making it convenient to carry. When the pull-out box 18 is inserted into the shell 17, the two elastic rubber protrusions squeeze each other and use friction to fix the pull-out box 18. The fixing cylinder 5 and the storage cylinder 3 can be separated for filling the whitening gel into the storage cylinder 3.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A whitening gel pen with a replaceable tip, comprising a pen body (1) and a protective cap (2), characterized in that, The pen body (1) includes a storage cylinder (3) and a fixed cylinder (5). A threaded sleeve (16) is provided on the outer wall of the end of the storage cylinder (3) away from the application head (4). The threaded sleeve (16) is threadedly connected to the inner and outer walls of the fixed cylinder (5). A movable hollow rod (6) is slidably connected to the inner wall of the fixed cylinder (5). A guide groove (7) is provided on the inner wall of the fixed cylinder (5). A movable block (8) is fixedly connected to the outer wall of the end of the movable hollow rod (6) away from the storage cylinder (3). The movable block (8) is limited and slidably engaged with the inner wall of the guide groove (7). A rotating block (10) is rotatably connected to one end of the fixed cylinder (5). A threaded rod (9) is fixedly connected to the outer wall of one end of the rotating block (10). The threaded rod (9) is threadedly connected to the inner wall of the movable hollow rod (6).

2. A whitening gel pen with a replaceable tip according to claim 1, characterized in that, The storage cylinder (3) is connected to an applicator (4) by a threaded connection at one end, and the storage cylinder (3) is connected to the applicator (4). The protective cover (2) is snapped to the outer wall of one end of the storage cylinder (3).

3. A whitening gel pen with a replaceable tip according to claim 1, characterized in that, The rotating block (10) has a sliding cavity (13) inside, and ball heads (12) are slidably connected to both ends of the sliding cavity (13).

4. A whitening gel pen with a replaceable tip according to claim 3, characterized in that, The sliding cavity (13) is provided with an elastic element (14), and the two ends of the elastic element (14) are respectively connected to two ball heads (12).

5. A whitening gel pen with a replaceable tip according to claim 3, characterized in that, The inner wall of the fixed cylinder (5) is provided with multiple circumferentially arranged arc-shaped grooves (11), and the ball head (12) is matched with the arc-shaped grooves (11).

6. A whitening gel pen with a replaceable tip according to claim 2, characterized in that, The protective cover (2) is fixedly connected to the side wall of the housing (17), and the inner wall of the housing (17) is slidably connected to the pull-out box (18).

7. A whitening gel pen with a replaceable tip according to claim 6, characterized in that, The pull-out box (18) has multiple slots on its side wall for storing the applicator head (4).

Images