Penlight

Abstract

The embodiment of the application belongs to the technical field of pen lamps, and relates to a pen lamp. The pen lamp comprises a pen body assembly and a tail assembly. The pen body assembly comprises a pen shell, a pen core, a sliding piece, an impact piece and a toggle piece. The tail assembly has a connecting end, and a switch is arranged on the connecting end. The connecting end is connected with the pen shell. The pen shell has a hollow structure penetrating from the head to the tail. A sliding groove penetrating through the side wall of the pen shell is arranged on the side wall of the pen shell. The sliding groove extends to one side near the head end to form a limiting groove. The sliding piece is slidably arranged in the hollow structure. The tail end of the pen core is connected with one end of the sliding piece. The impact piece is connected with the other end of the sliding piece. The toggle piece is connected with the sliding piece. The toggle piece has a movable part and a toggle part. One end of the toggle part is connected with the movable part through the sliding groove outside the pen shell. The other end of the toggle part is located outside the pen shell. The sliding groove has a positioning groove at the initial position corresponding to the movable part. The positioning groove is arranged on the side wall of the sliding groove. The pen lamp can prevent the pen core and the pen tip from being damaged when the pen lamp falls.

Description

Technical Field

[0001] This application relates to the field of pen lamp technology, and more particularly to a pen lamp. 。 Background Technology

[0002] In daily life, pens and lamps are commonly used tools when people are dealing with routine tasks. In order to make people's lives more convenient, pen lamps have emerged that can both write and provide illumination.

[0003] Most current pen lights use a push-up / pull mechanism to extend the pen and a button to turn the light on / off. This design is prone to accidental activation during transport; the pen tip or lead can easily be pushed out, causing damage, and the button can be accidentally pressed, turning on the light and wasting ink. Furthermore, if the pen light is accidentally dropped, the pen tip can easily break out of the pen casing and hit the ground, damaging the pen tip. Summary of the Invention

[0004] The purpose of this application is to provide a pen light to solve the problems of accidental activation when carrying a pen light and damage to the pen tip when the pen light is dropped.

[0005] To address some or all of the aforementioned technical problems or for other purposes, this application provides a pen lamp that employs the following technical solution:

[0006] A pen light with a pop-out refill includes: a pen body assembly and a tail assembly; wherein the pen body assembly includes: a pen shell, a refill, a slider, an impactor, and a toggle mechanism; the tail assembly has a connecting end with a switch; the connecting end is connected to the pen shell, wherein...

[0007] The pen casing has a hollow structure that runs from head to tail, and a sliding groove that runs through the side wall; the sliding groove extends to one side near the pen tip to form a limiting groove.

[0008] The slider is slidably disposed within the hollow structure. The tail end of the pen refill is connected to one end of the slider. The impact member is connected to the other end of the slider. The actuating member is connected to the slider. The actuating member has a movable part and a actuating part. One end of the actuating part passes through the sliding groove from outside the pen shell and is connected to the movable part. The other end of the actuating part is located outside the pen shell.

[0009] The sliding groove has a positioning groove at the initial position corresponding to the movable part, and the positioning groove is disposed on the side wall of the sliding groove; the initial position is the position of the movable part on the sliding groove when the pen retracts into the pen shell;

[0010] When the movable part is in the initial position, it can be locked into the positioning groove for limiting. The actuating part is used to release the limiting of the movable part and can push the sliding member towards the pen tip to drive the pen core to pop out, and then push it towards the limiting groove to limit the pen core. Alternatively, it can push the sliding member towards the pen tail to drive the impact member to press the switch to turn the switch on or off.

[0011] Furthermore, the positioning groove is formed by the sidewall of the sliding groove recessed from the inside to the outside of the pen shell, and there is a positioning groove on each of the two opposite sidewalls of the sliding groove.

[0012] Furthermore, the actuating component further includes: a first elastic body and a nut; the movable part is a hollow cylinder; the actuating part is a lever; the sliding component has a dumbbell-shaped through hole with an upper bottom wall; the nut is disposed on the through hole and located on the side of the through hole away from the sliding groove; the hollow cylinder is disposed on the through hole and located on the side of the through hole close to the sliding groove; the lever passes through the through hole and sequentially through the hollow cylinder and the first elastic body and is connected to the nut; one end of the first elastic body abuts against the upper bottom wall, and the other end abuts against the hollow cylinder; the hollow cylinder is slidably connected to the lever.

[0013] When the hollow cylinder is in its initial position, it is pushed into the positioning groove by the first elastic body.

[0014] Furthermore, a lever is connected to a lever end located outside the sliding groove.

[0015] Furthermore, the slider has a clamp at one end near the pen tip, and the tail end of the pen refill is connected to the clamp.

[0016] Furthermore, the pen body assembly also includes: a conductive plate and conductive posts; wherein,

[0017] The tail assembly contains a battery and a PCB board, the battery and the PCB board are electrically connected, the switch is disposed on the PCB board, the conductive plate is disposed on the tail end of the pen shell and is electrically connected to the PCB board, one end of the conductive post is connected to the conductive plate and the other end is connected to the clamp.

[0018] Furthermore, the conductive plate is annular and has a connecting hole. The impact member is formed by connecting an impact plate and a movable column. One end of the movable column passes through the connecting hole and is opposite to the sliding member. The outer side wall of the movable column is slidably connected to the inner side wall of the connecting hole. The impact plate is located between the conductive plate and the PCB board. The switch is opposite to the impact plate. The PCB board is provided with elastic conductive contacts, which abut against the impact plate.

[0019] Furthermore, the pen body assembly also includes a pen tip and a second elastic body. The pen tip is connected to the front end of the pen shell, and the second elastic body is sleeved on the head of the pen refill, with one end connected to the pen refill and the other end abutting against the inner sidewall of the pen tip.

[0020] Furthermore, the pen tip is provided with an illumination module, which has a first conductive connector and a second conductive connector. The first conductive connector is electrically connected to the pen shell, and the second conductive connector is electrically connected to the pen refill.

[0021] Furthermore, the number of conductive posts is two to four, each of which is formed by a cylindrical tube sleeved on another cylindrical tube and containing a spring, and each conductive post can extend or retract along the length of the pen shell.

[0022] Compared with the prior art, the embodiments of this application have the following main advantages:

[0023] The pen light proposed in this application features a slider inside the pen casing and a sliding groove on the casing. The slider is connected to a toggle switch, which controls the movement of the slider. One sliding direction extends the pen tip, while the other direction turns the switch on. Because a positioning groove positions the toggle switch, the extension of the pen tip or the activation of the switch can only be controlled by releasing the positioning groove. When the user is carrying the pen light, the toggle switch is restricted from movement by the positioning groove, preventing accidental activation of the pen tip or the switch from turning on. This also prevents damage to the pen tip if the pen light is dropped. Attached Figure Description

[0024] To more clearly illustrate the solutions in this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is an exploded view of the structure of a pen lamp according to an embodiment of this application;

[0026] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0027] Figure 3 This is a schematic diagram of the structure of a pen lamp proposed in one embodiment of this application.

[0028] Icon labels:

[0029] 1. Pen body assembly; 11. Pen shell; 111. Sliding groove; 1111. Positioning groove; 112. Limiting groove; 12. Pen refill; 121. Second elastic body; 13. Sliding component; 14. Impact component; 141. Impact plate; 142. Movable column; 15. Actuating component; 151. First elastic body; 152. Nut; 153. Hollow cylinder; 154. Lever; 1541. Actuating buckle; 16. Clamp; 17. Conductive plate; 171. Connecting hole; 18. Conductive column; 19. Pen tip; 2. Tail assembly; 21. Connecting end; 22. Battery; 23. PCB board; 231. Switch; 232. Elastic conductive contact. Detailed Implementation

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application, are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0033] Reference Figures 1-3 The first embodiment of this application discloses a pen lamp with a pop-out pen refill 12, including: a pen body assembly 1 and a tail assembly 2; wherein, the pen body assembly 1 includes: a pen shell 11, a pen refill 12, a slider 13, an impact member 14, and a toggle member 15; the tail assembly 2 has a connecting end 21, on which a switch 231 is provided; the connecting end 21 is connected to the pen shell 11, wherein,

[0034] The pen casing 11 has a hollow structure that runs through the head and tail, and a sliding groove 111 that runs through the side wall; the sliding groove 111 extends to one side near the pen tip 19 to form a limiting groove 112.

[0035] The slider 13 is slidably disposed in the hollow structure. The tail end of the pen refill 12 is connected to one end of the slider 13. The impact member 14 is connected to the other end of the slider 13. The actuating member 15 is connected to the slider 13. The actuating member 15 has a movable part and a actuating part. One end of the actuating part passes through the sliding groove 111 from the outside of the pen shell 11 and is connected to the movable part. The other end of the actuating part is located outside the pen shell 11.

[0036] The sliding groove 111 has a positioning groove 1111 at the initial position of the corresponding movable part. The positioning groove 1111 is provided on the side wall of the sliding groove 111. The initial position is the position of the movable part on the sliding groove 111 when the pen refill 12 is retracted into the pen shell 11.

[0037] When the movable part is in the initial position, it can be locked into the positioning groove 1111 for limiting. The toggle part is used to release the limiting of the movable part and can be toggled towards the end of the pen tip 19 to make the pen refill 12 pop out, and then toggle towards the limiting groove 112 to limit the pen refill 12. Alternatively, the toggle part 13 can be toggled towards the end of the pen tip to make the impact member 14 press the switch 231 to turn the switch 231 on or off.

[0038] In this embodiment, the pen lamp with pop-out refill 12 refers to a pen lamp where the refill 12 can be hidden in the pen case 11 when not writing, and it generally does not have a cap. The tail assembly 2 refers to a part located at the tail of the pen lamp during assembly, and it can generally be provided with a hook to facilitate users to clip it into their pockets when carrying it. Components such as the battery 22 and the lighting module of the pen lamp can be set on the tail assembly 2. For example, the battery 22 can be set in the tail assembly 2, and the lighting module can be a small LED light set at the end or side wall of the tail assembly 2. In some application embodiments, the lighting module can also be set in other positions of the pen lamp, such as the lighting module described in the following embodiments of this application. The switch 231 is preferably set on the end face of the connection end 21 to facilitate the control of the impact member 14. The connection between the aforementioned connecting end 21 and the pen shell 11 can be either a threaded connection or a snap-fit ​​connection. In a threaded connection, one end 21 and the pen shell 11 have an internal thread, and the other has an external thread, connected via the internal and external threads. In a snap-fit ​​connection, one end 21 and the pen shell 11 have a slot, and the other has a snap-fit, connected via the snap-fit ​​and slot. The sliding direction of the aforementioned sliding groove 111 is consistent with the length direction of the pen shell 11. The angle between the limiting groove 112 and the sliding groove 111 is preferably 90 degrees, and secondly, an acute angle, meaning the limiting groove 112 and the sliding groove 111 form a "7" shape or a "√" shape. The end of the limiting groove 112 can have a slightly larger locking position than its groove body. The sliding member 13 is installed inside the pen shell 11, acting as a slider. The aforementioned actuating member 15 is used to control the movement of the sliding member 13. The aforementioned movable part is used to limit the sliding member 13, and the actuating part is equivalent to the handle of the actuating member 15. When the actuating member 15 is a rod-shaped handle, the movable part can be a ball pin (with a pin hole, a compression spring inside the pin hole, and a small ball at the opening of the pin hole) provided on the handle. In this case, the positioning groove 1111 is a circular groove that cooperates with the ball pin. When the ball pin is used in conjunction with the circular groove, the small ball on the ball pin in the initial position is pushed into the circular groove by the compression spring, limiting the sliding member 13. When the rod-shaped handle is actuated with force (generally, this force is much greater than the force when accidentally touched), the small ball is pressed into the pin hole by the side wall of the sliding groove 111, and the slider is released from the limit. The movable part and the actuating part can also be other structures, which will be described in detail in subsequent embodiments. Because the positioning groove 1111 is set to position the toggle member 15, the extension of the pen refill 12 or the opening of the switch 231 can only be controlled by releasing the positioning groove 1111 from the toggle member 15. When the user carries it, the movement of the toggle member 15 is restricted by the positioning groove 1111. Even if it is accidentally touched, it will not cause the pen refill 12 to extend or the switch 231 to open. At the same time, it can prevent the pen refill 12 from being damaged when the pen light is dropped.

[0039] Regarding the aforementioned pen lamp, this application also proposes a second embodiment, wherein the positioning groove 1111 is formed by the side wall of the sliding groove 111 recessed from the inside to the outside of the pen shell 11, and there is a positioning groove 1111 on each of the opposite side walls of the sliding groove 111.

[0040] Regarding the aforementioned pen lamp, this application also proposes a third embodiment, wherein the actuating member 15 further includes: a first elastic body 151 and a nut 152, the movable part is a hollow cylinder 153, and the actuating part is a lever 154; the sliding member 13 has a dumbbell-shaped through hole with an upper bottom wall, the nut 152 is disposed on the through hole and located on the side of the through hole away from the sliding groove 111, the hollow cylinder 153 is disposed on the through hole and located on the side of the through hole close to the sliding groove 111, the lever 154 passes through the through hole and sequentially passes through the hollow cylinder 153 and the first elastic body 151 and is connected to the nut 152, one end of the first elastic body 151 abuts against the upper bottom wall, and the other end abuts against the hollow cylinder 153, and the hollow cylinder 153 is slidably connected to the lever 154;

[0041] When the hollow cylinder 153 is in the initial position, it is pushed into the positioning groove 1111 by the first elastic body 151.

[0042] In the second and third embodiments, the first elastic body 151 can be a spring. A positioning groove 1111 is provided on each of the opposite side walls of the sliding groove 111, with the positioning grooves 1111 oriented perpendicular to the length direction of the pen shell 11. The movable part is a hollow cylinder 153. A lever 154 passes through the hollow cylinder 153 and the spring located above the dumbbell-shaped through hole, and then connects to the nut 152 located below the dumbbell-shaped through hole. In the initial position, the springs engage the hollow cylinder 153 from below into the positioning grooves 1111 on both side walls, resulting in a more balanced force distribution on the entire structure. Since the slider 13 slides along the length of the pen shell 11, the hollow cylinder 153, after being inserted into the positioning groove 1111, will limit the slider 13. In case of accidental contact, since the side wall of the hollow cylinder 153 abuts against the side wall of the positioning groove 1111, the slider 13 cannot move along the length of the pen shell 11. This prevents the pen tip 12 from protruding and causing damage in case of accidental contact. At the same time, after the connecting end 21 is connected to the pen shell 11, the switch 231 is hidden in the pen light. Only when the slider 13 pushes the impact member 14 can the switch 231 be triggered. After the slider 13 is limited, the switch 231 will not be accidentally contacted.

[0043] Regarding the aforementioned pen lamp, this application also proposes a fourth embodiment, wherein a toggle latch 1541 is connected to one end of the lever 154 located outside the sliding groove 111.

[0044] In this embodiment, the pen light itself is smaller than a human finger, and the lever 154 set on the pen light is even smaller. In order to make it more convenient for the user to operate the lever 154, a toggle buckle 1541 can be set at the upper end of the lever 154, and the toggle buckle 1541 is exposed outside the pen shell 11.

[0045] Regarding the aforementioned pen lamp, this application also proposes a fifth embodiment, wherein a clip 16 is provided at one end of the slider 13 near the pen tip 19, and the tail end of the pen refill 12 is connected to the clip 16.

[0046] In this embodiment, the clamp 16 is a connecting component with multiple clips, all of which are configured to have a certain elasticity. The entire clamp 16 is preferably made of metal. After setting the clamp 16, firstly, the pen refill 12 can be better fixed, preventing the pen refill 12 from tilting or shaking during writing; secondly, when the clips and the pen refill 12 together serve as a conductive path, the connection between the clips and the pen refill 12 is tighter, avoiding poor contact.

[0047] Regarding the aforementioned pen lamp, this application also proposes a sixth embodiment, wherein the pen body assembly 1 further includes: a conductive plate 17 and a conductive post 18; wherein,

[0048] The tail assembly 2 contains a battery 22 and a PCB board 23, which are electrically connected. A switch 231 is mounted on the PCB board 23. A conductive plate 17 is mounted on the tail end of the pen shell 11 and is electrically connected to the PCB board 23. One end of the conductive post 18 is connected to the conductive plate 17, and the other end is connected to the clamp 16.

[0049] In this embodiment, since the pen body assembly 1 of the pen lamp is equipped with a pen refill 12, which is generally located in the pen shell 11 and occupies most of the internal space of the pen shell 11, the battery 22 can be placed in the pen tail assembly to allow more installation space for the battery 22. The PCB board 23 is also placed in the pen tail assembly. The conductive post 18 is preferably a slender component, as it occupies less space and can function similarly to a wire. The conductive plate 17 can be a conductive metal plate with an insulating outer periphery, such as covered with insulating silicone, and then connected to the pen shell 11. This way, the conductive plate 17 conducts electricity while simultaneously being disconnected from the pen shell 11, allowing a conductive path to be created within the pen refill 12 through its inherent components. In other words, the pen refill 12, the clamp 16, the conductive post 18, and the conductive plate 17 can form a conductive path.

[0050] Regarding the aforementioned pen lamp, this application also proposes a seventh embodiment, wherein the conductive plate 17 is annular and has a connecting hole 171. The impact member 14 is formed by connecting an impact plate 141 and a movable column 142. One end of the movable column 142 passes through the connecting hole 171 and is opposite to the sliding member 13. The outer side wall of the movable column 142 is slidably connected to the inner side wall of the connecting hole 171. The impact plate 141 is located between the conductive plate 17 and the PCB board 23. The switch 231 is opposite to the impact plate 141. The PCB board 23 is provided with an elastic conductive contact 232, which abuts against the impact plate 141.

[0051] In this embodiment, the impact member 14 is formed by connecting the impact plate 141 and the movable column 142, and its overall shape is similar to that of a nail or thumbtack. The diameter of the movable column 142 is the same as the diameter of the connecting hole 171. The conductive plate 17 can be made into a plate with a certain thickness, that is, the sidewall of the connecting hole 171 has a certain thickness, for example, the conductive plate 17 is 0.3cm-0.5cm thick. At this time, the movable column 142 and the conductive plate 17 are slidably connected. The conductive plate 17 also plays the role of limiting the movable column 142 from deviating from the axis of the connecting hole 171. The movable column 142 can only move in the axial direction of the connecting hole 171, which ensures that the impact plate 141 can be aligned with the switch 231 every time it moves towards the switch 231. The elastic conductive contact 232 abuts against the impact plate 141 to ensure that the elastic conductive contact 232 and the impact plate 141 are electrically connected regardless of whether the impact plate 141 moves. In some embodiments, the conductive plate 17 can also be configured as a cover. In this case, the connecting hole 171 is located at the bottom of the cover, the diameter of the movable column 142 is the same as the diameter of the connecting hole 171, and the diameter of the impact plate 141 is the same as that of the cover ring. When the movable column 142 and the conductive plate 17 are slidably connected, the outer wall of the movable column 142 is slidably connected to the inner wall of the connecting hole 171, and the outer wall of the impact plate 141 is slidably connected to the inner wall of the cover ring. The switch 231 must at least ensure that the contact of the switch 231 is located at the edge of the cover ring when it is set. The above structure can also ensure that the movable column 142 can only move in the axial direction of the connecting hole 171, that is, it can also ensure that the impact plate 141 can be aligned with the switch 231 each time it moves towards the switch 231.

[0052] Regarding the above-mentioned pen lamp, this application also proposes an eighth embodiment, wherein the pen body assembly 1 further includes a pen tip 19 and a second elastic body 121. The pen tip 19 is connected to the front end of the pen shell 11, and the second elastic body 121 is sleeved on the head of the pen refill 12, with one end connected to the pen refill 12 and the other end abutting against the inner sidewall of the pen tip 19.

[0053] In this embodiment, the second elastic body 121 can be a spring, and the pen tip 19 can be threaded to the front end of the pen shell 11, so that the pen tip 12 can be easily disassembled and replaced after the ink in the pen tip 12 is used up.

[0054] Regarding the aforementioned pen lamp, this application also proposes a ninth embodiment, wherein the pen tip 19 is provided with an illumination module, the illumination module having a first conductive connector and a second conductive connector, the first conductive connector being electrically connected to the pen shell 11, and the second conductive connector being electrically connected to the pen refill 12.

[0055] In this embodiment, the lighting module can be an LED light or a small circuit board containing an LED light. To enable the lighting module to be installed on the pen tip 19, in conjunction with the previous embodiment, a first conductive connector and a second conductive connector are provided on the lighting module. The first conductive connector connects to the pen refill 12, and the second conductive connector connects to the pen shell 11. The pen refill 12, the clip 16, the conductive post 18, and the conductive plate 17 form a conductive path connected to the first power supply terminal on the PCB board 23. The pen shell 11 forms another conductive path connected to the second power supply terminal on the PCB board 23. This achieves the circuit connection of the lighting module. The lighting module installed on the pen tip 19 can be used to provide illumination when the pen refill 12 is writing.

[0056] Regarding the aforementioned pen lamp, this application also proposes a tenth embodiment, wherein the number of conductive posts 18 is two to four, each conductive post 18 is formed by a cylindrical tube sleeved on another cylindrical tube and having a built-in spring, and each conductive post 18 can extend and retract in the length direction of the pen shell 11.

[0057] In some embodiments, the conductive post 18 passes through the slider 13 and connects to the clamp 16. Since the clamp 16 is fixed to one end of the slider 13, the clamp 16 will move with the slider 13 when the slider 13 slides. The conductive post 18 is configured as a cylindrical tube sleeved on another cylindrical tube and has a built-in spring. In this way, the conductive post 18 can extend and retract in the length direction of the pen shell 11. That is, the length of the conductive post 18 can extend and retract according to the position of the clamp 16, ensuring the conductivity stability of the conductive path formed by the pen core 12, the clamp 16, the conductive post 18 and the conductive plate 17.

[0058] Obviously, the embodiments described above are only some embodiments of this application, not all embodiments. The accompanying drawings show preferred embodiments of this application, but do not limit the patent scope of this application. This application can be implemented in many different forms; rather, the purpose of presenting these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this application's specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the scope of patent protection of this application.

Claims

1. A penlight having a pop-up refill, characterized by, The utility model relates to a pen body assembly and tail assembly, wherein the pen body assembly comprises a pen shell, a pen core, a sliding piece, an impact piece and a knob, and the tail assembly has a connecting end with a switch, and the connecting end is connected to the pen shell. The pen shell has a hollow structure with a head and a tail, and a sliding groove is formed in the side wall of the pen shell. The sliding piece is slidably arranged in the hollow structure, the tail end of the pen core is connected to one end of the sliding piece, the impact piece is connected to the other end of the sliding piece, and the knob is connected to the sliding piece. The knob has a movable part and a knob part, one end of the knob part is connected to the movable part through the sliding groove, and the other end of the knob part is located outside the pen shell. The sliding groove has a positioning groove corresponding to the initial position of the movable part, and the positioning groove is arranged on the side wall of the sliding groove. When the movable part is located at the initial position, the movable part can be clamped into the positioning groove for limiting, the knob part is used for releasing the limitation of the movable part, and the sliding piece can be moved towards the head end or the tail end. The sliding piece is provided with a clamping piece near the head end. The pen body assembly further comprises a conductive plate and a conductive column. The tail assembly is provided with a battery and a PCB, the battery and the PCB are electrically connected, the switch is arranged on the PCB, the conductive plate is arranged on the tail end of the pen shell and electrically connected to the PCB, one end of the conductive column is connected to the conductive plate, and the other end of the conductive column is connected to the clamping piece. The pen body assembly further comprises a pen head and a second elastic body, the pen head is connected to the front end of the pen shell, and the second elastic body is sleeved on the head of the pen core.

2. The penlight of claim 1, wherein, The positioning groove is formed by recessing the side wall of the sliding groove from the inside to the outside of the pen shell, and each side wall of the sliding groove has a positioning groove.

3. The penlight of claim 2, wherein, The knob further comprises a first elastic body and a nut, the movable part is a hollow cylinder, the knob part is a knob rod, the sliding piece has a dumbbell-shaped through hole with an upper bottom wall, the nut is arranged on the through hole and located on the side of the through hole away from the sliding groove, the hollow cylinder is arranged on the through hole and located on the side of the through hole close to the sliding groove, the knob rod penetrates the through hole and sequentially penetrates the hollow cylinder and the first elastic body and is connected to the nut, one end of the first elastic body abuts against the upper bottom wall, the other end of the first elastic body abuts against the hollow cylinder, and the hollow cylinder is slidably connected to the knob rod.

4. The penlight of claim 3, wherein, One end of the knob rod located outside the sliding groove is connected to a knob buckle.

5. The penlight of claim 1, wherein, The tail end of the pen core is connected to the clamping piece.

6. The penlight of claim 1, wherein, The conductive plate is annular and has a connecting hole, the impact member is formed by an impact plate and a movable column, one end of the movable column passes through the connecting hole and is opposite to the sliding member, the outer sidewall of the movable column is in sliding connection with the inner sidewall of the connecting hole, the impact plate is located between the conductive plate and the PCB plate, the switch is opposite to the impact plate, the PCB plate is provided with an elastic conductive contact, and the elastic conductive contact is in abutment with the impact plate.

7. The penlight of claim 1, wherein, The pen head is provided with an illuminating module, the illuminating module has a first conductive connector and a second conductive connector, the first conductive connector is electrically connected with the pen shell, and the second conductive connector is electrically connected with the pen core.

8. The penlight of any one of claims 6-7, wherein, The number of the conductive columns is two to four, any conductive column is formed by sleeving one cylindrical pipe on another cylindrical pipe and embedding a spring, and any conductive column can be telescopic in the length direction of the pen shell.

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