Threaded locking structure for cover and laser pen

Abstract

The utility model discloses a screw thread locking structure for cover and laser pen, the screw thread locking structure for cover comprises a screw thread connecting part and a locking connecting part, the locking connecting part comprises a buckle connecting piece and an unlocking piece, when the main body and the cover body are screwed in place through the screw thread of the screw thread connecting part, the buckle connecting piece and the unlocking piece are locked. The cover body is clamped and locked on the main body through the buckle connecting piece; and after the buckle connecting piece is unlocked by the unlocking piece, the cover body can be unscrewed relative to the main body thread. The locking connecting part is additionally arranged on the basis of the structure of an existing threaded connecting part, the locking connecting part serves as a further locking structure of the threaded connecting part, it is guaranteed that the main body and the cover body are not easily opened any more, and the purposes of preventing disassembly by old people and children and preventing mistaken disassembly are achieved.

Description

Technical Field

[0001] The utility model relates to a threaded locking structure for a cover and a laser pointer adopting such a threaded locking structure for the cover. Background Art

[0002] For most pen-shaped tools with protective covers, the cover body is mainly connected to the head end of the main body by means of threads. The cover body buckles the head end of the main body inside for protection. The cover body and the main body are detachably connected by a single thread. This method is convenient for locking and disassembling, but the cover body can also be easily unscrewed, and there may be a risk of accidental opening and disassembly. For some special tools such as laser pointers, see Figure 6 , the cover body is installed at one end of the laser head for protecting the laser head and can reduce the harm caused by the direct irradiation of the laser beam to the human eye. In order to facilitate the replacement and maintenance of the laser pointer, the cover body is usually designed to be detachable with a single thread. Such a detachable pen cap laser pointer looks like an ordinary writing tool and is easily misused by children or mistaken for a toy, increasing the risk of misuse. Especially when the pen cap of a high-power laser pointer is easily disassembled and accidentally turned on, the risk is relatively high; and in the prior art, the detachable method of the pen cap does not protect vulnerable groups such as children and the elderly. Especially when the pen cap is not correctly locked, the laser pointer is likely to be accidentally turned on, and the laser head will emit a strong beam, causing harm to the environment, eyes or other sensitive parts. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a threaded locking structure for a cover that can prevent the elderly and children from disassembling and accidental disassembly, and a laser pointer adopting such a threaded locking structure for the cover.

[0004] To solve the above technical problem, the technical solution of the utility model is: a threaded locking structure for a cover is provided between the main body and the cover body covering the head end of the main body, including a threaded connection part. A locking connection part is further provided between the main body and the cover body. The locking connection part includes a snap connection part and an unlocking part. When the main body and the cover body are screwed tightly in place through the threaded connection part, the cover body is snap-locked to the main body through the snap connection part; when the unlocking part unlocks the snap connection part, the cover body can be screwed loose relative to the main body.

[0005] As a preferred technical solution, the threaded connection part includes an external thread provided on the outer periphery of the main body and an internal thread provided on the inner periphery of the cover body. The external thread and the internal thread are threadedly connected. The external thread is provided on the main body on the side close to the cover body relative to the locking connection part, and the internal thread is provided on the cover body on the side far from the main body relative to the locking connection part.

[0006] As a preferred technical solution, the snap fastener connection member includes a claw mounting ring provided on the cover body. An elastic claw is provided at one end of the claw mounting ring close to the main body. A locking ring groove for cooperating with and clamping the elastic claw is provided on the outer periphery of the main body. The unlocking member can make the elastic claw tilt and disengage from the locking ring groove.

[0007] As a preferred technical solution, a connecting skirt sleeve is provided at one end of the cover body close to the main body. The claw mounting ring is provided on the inner periphery of the connecting skirt sleeve. A claw limiting groove is provided on one side of the inner periphery of the connecting skirt sleeve close to the main body. A claw limiting block for cooperating with the claw limiting groove is provided on the elastic claw.

[0008] As a preferred technical solution, the claw limiting groove is a V-shaped groove provided on the inner periphery of the connecting skirt sleeve. The claw limiting block is a V-shaped block for cooperating with the V-shaped groove. A deformation gap is provided between the V-shaped groove and the V-shaped block.

[0009] As a preferred technical solution, the unlocking member includes an unlocking block. An unlocking inclined surface is provided on the elastic claw. One end of the unlocking block away from the main body can be inserted into the elastic claw and abuts against the unlocking inclined surface.

[0010] As a preferred technical solution, the unlocking member includes an unlocking sliding sleeve. One end of the unlocking sliding sleeve is sleeved outside the cover body and slides along the axial direction of the cover body. The unlocking block is fixed to the other end of the unlocking sliding sleeve.

[0011] As a preferred technical solution, a sealing ring is provided between the unlocking block and the cover body.

[0012] As a preferred technical solution, a limiting shoulder for limiting the end of the unlocking sliding sleeve is provided on the outer periphery of the cover body. An operating gap is provided between the limiting shoulder and the unlocking sliding sleeve.

[0013] As a preferred technical solution, a laser pointer includes the above-mentioned thread locking structure for the cover.

[0014] Due to the adoption of the above technical solution, the beneficial effect of the present utility model is that: a thread connection part and a locking connection part are provided between the main body and the cover body. On the basis of the existing structure of the thread connection part, a locking connection part is added. The locking connection part serves as a further locking structure for the thread connection part. By increasing the operation steps of disassembly, the difficulty of accidental disassembly is increased to ensure that the main body and the cover body are not easily opened, achieving the purpose of preventing the elderly and children from disassembling and preventing accidental disassembly, and improving the use safety of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The following drawings are only intended to illustrate and explain the present utility model schematically and do not limit the scope of the present utility model.

[0016] Figure 1 is a schematic structural view of an embodiment of the present utility model;

[0017] Figure 2 is a structural sectional view of an embodiment of the present utility model;

[0018] Figure 3 is a partial structural sectional view of the main body of an embodiment of the present utility model;

[0019] Figure 4 is a structural sectional view of the cover body of an embodiment of the present utility model;

[0020] Figure 5 is a schematic view of the state after the cover body and the main body of an embodiment of the present utility model are completely locked;

[0021] Figure 6 is a schematic view of a traditional laser pointer in the background art;

[0022] In the figure: 10 - main body; 20 - cover body; 30 - threaded connection part; 31 - external thread; 32 - internal thread; 40 - locking connection part; 41 - snap fastener; 41a - claw mounting ring; 41b - elastic claw; 41c - locking ring groove; 41d - connecting skirt sleeve; 41e - claw limiting groove; 41f - claw limiting block; 42 - unlocking part; 42a - unlocking sliding sleeve; 42b - unlocking block; 42c - unlocking inclined surface; 42d - sealing ring; 42e - limiting shoulder. Detailed implementation manners

[0023] The following further elaborates the present utility model in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present utility model are described by way of illustration. Undoubtedly, those of ordinary skill in the art can recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present utility model. Therefore, the accompanying drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0024] A cover thread locking structure of the present embodiment can be applied to different types of pen-shaped tools, such as laser pointers, fountain pens, pen-shaped therapeutic instruments, etc. Among them, as a kind of pen-shaped tool, the laser pointer includes a laser pointer main body 10 and a laser pointer cover body 20 covering the head end of the laser pointer main body 10. The laser pointer cover body 20 is securely connected through a cover thread locking structure of the present embodiment to achieve the purpose of preventing the disassembly by the elderly and children and accidental disassembly, and is used to improve the safety of the laser pointer. The present embodiment describes the structure and working principle of a cover thread locking structure taking the laser pointer as an example. For the structure of the laser pointer, see Figure 1 .

[0025] See Figure 1and Figure 2 , a threaded locking structure for a cover, arranged between a main body 10 and a cover body 20, includes a threaded connection part 30 and a locking connection part 40, wherein the locking connection part 40 includes a snap-on connector 41 and an unlocking part 42. When the main body 10 and the cover body 20 are screwed into place by the threaded connection part 30, the cover body 20 is snap-connected and locked to the main body 10 by the snap-on connector 41; when the unlocking part 42 unlocks the snap-on connector 41, the cover body 20 can be screwed loose relative to the main body 10; in this embodiment, a locking connection part 40 is added on the basis of the structure of the existing threaded connection part 30. The locking connection part 40 serves as a further locking structure of the threaded connection part 30 to ensure that the main body 10 and the cover body 20 are no longer easily opened, thereby achieving the purpose of preventing disassembly by the elderly and children and preventing accidental disassembly.

[0026] See also Figure 3 and Figure 4 The threaded connection portion 30 includes an external thread 31 provided on the outer periphery of the main body 10 and an internal thread 32 provided on the inner periphery of the cover body 20. The external thread 31 and the internal thread 32 are threadedly connected. The external thread 31 is provided on a side of the main body 10 close to the cover body 20 relative to the locking connection portion 40, and the internal thread 32 is provided on a side of the cover body 20 away from the main body 10 relative to the locking connection portion 40.

[0027] See also Figure 3 and Figure 4 The buckle connector 41 includes a claw mounting ring 41a disposed on the cover body 20, and an elastic claw 41b is disposed at one end of the claw mounting ring 41a close to the main body 10. A locking ring groove 41c that cooperates with the elastic claw 41b is disposed on the outer periphery of the main body 10, and the unlocking member 42 can make the elastic claw 41b tilt up and disengage from the locking ring groove 41c. In this embodiment, the claw mounting ring 41a and the elastic claw 41b are integrally formed, and can be made of plastic or aluminum alloy, and have elastic deformation. In a natural state, the elastic claw 41b is engaged in the locking ring groove 41c, so that in addition to the threaded connection relationship, the cover body 20 and the main body 10 also have a clamping relationship; but when force is applied to the elastic claw 41b, the elastic claw 41b can be tilted in a direction away from the locking ring groove 41c, so that the elastic claw 41b disengages from the locking ring groove 41c, and the clamping relationship between the cover body 20 and the main body 10 is released. At this time, only the threaded connection relationship remains between the cover body 20 and the main body 10, and the cover body 20 can be removed from the main body 10 by loosening it.

[0028] See also Figure 3The cover body 20 is provided with a connecting skirt sleeve 41d at one end close to the main body 10, and the claw mounting ring 41a is sleeved on the inner circumference of the connecting skirt sleeve 41d. The end of the claw mounting ring 41a away from the main body 10 abuts against the shoulder of the connecting skirt sleeve 41d and is adapted to the inner circumference of the connecting skirt sleeve 41d. The inner diameter of the claw mounting ring 41a is larger than the outer circumferential diameter of the head end of the main body 10. A claw limiting groove 41e is provided on the side of the inner circumference of the connecting skirt sleeve 41d close to the main body 10. A claw limiting block 41f cooperating with the claw limiting groove 41e is provided on the elastic claw 41b. The claw limiting groove 41e is provided on the inner circumference of the connecting skirt sleeve 41d. The V-shaped groove, the claw limiting block 41f is a V-shaped block matched with the V-shaped groove, a deformation gap is provided between the V-shaped groove and the V-shaped block, the V-shaped groove cooperates with the V-shaped block to limit the axial position of the elastic claw 41b, when the claw mounting ring 41a and the elastic claw 41b are installed in the connecting skirt sleeve 41d, the elastic claw 41b is inserted into the claw limiting groove 41e to prevent the elastic claw 41b from falling off axially; and the deformation gap serves as a reserved space for the radial deformation of the elastic claw 41b, and the elastic claw 41b is tilted up and enters the deformation gap, so that the elastic claw 41b can be disengaged from the locking ring groove 41c.

[0029] See also Figure 3 The unlocking member 42 includes an unlocking sleeve 42a and an unlocking block 42b, the unlocking sleeve 42a and the unlocking block 42b are an integrally formed structure, one end of the unlocking sleeve 42a is sleeved on the outside of the cover body 20 and slides axially along the cover body 20, the unlocking block 42b is fixed to the other end of the unlocking sleeve 42a, an unlocking inclined surface 42c is provided on the elastic claw 41b, and the end of the unlocking block 42b away from the main body 10 can be inserted into the elastic claw 41b and rest on the unlocking inclined surface 42c; a sealing ring 42d is provided between the unlocking block 42b and the end of the connecting skirt 41d, and the sealing ring 42d is an O-ring. When the unlocking sleeve 42a is pushed axially, the unlocking block 42b presses the sealing ring 42d, and the unlocking block 42b follows the axial movement of the unlocking sleeve 42a, pushing the elastic claw 41b to tilt outward and disengage from the locking ring groove 41c; when the locking sleeve is no longer pushed, the sealing ring 42d resumes its deformation, forcing the unlocking block 42b to move away from the elastic claw 41b, and the elastic claw 41b resumes its deformation.

[0030] An annular groove is provided on the outer periphery of the connecting skirt sleeve 41d, and an end of the unlocking sleeve 42a away from the main body 10 is provided with a portion extending into the annular groove and bending inward to hook into the annular groove. At the same time, the unlocking slide groove can only slide axially along the connecting skirt sleeve 41d through axial limiting structures such as the slide groove and the slider.

[0031] One end surface of the annular groove away from the main body 10 serves as a limiting shoulder 42e for limiting the end of the unlocking sleeve 42a. A running gap is provided between the limiting shoulder 42e and the unlocking sleeve 42a to facilitate the movement and limiting of the unlocking member 42.

[0032] The working principle of this embodiment is:

[0033] When removing the pen cap, first push the unlocking member 42 toward the cover body 20, the unlocking block 42b causes the elastic claw 41b to deform outward, and the elastic claw 41b is disengaged from the locking ring groove 41c during the deformation process, and then rotate the main body 10 to separate the main body 10 from the cover body 20, and then pull the main body 10 out of the cover body 20. After releasing the unlocking member 42, the elastic claw 41b resumes its deformation;

[0034] When installing the pen cap, first push the unlocking member 42 toward the cover body 20, and the unlocking block 42b causes the elastic claw 41b to deform outward, then insert the head end of the main body 10 into the cover body 20, rotate the main body 10 to thread the main body 10 and the cover body 20 through the threaded connection part 30, and after the threaded connection is in place, release the unlocking member 42, and the elastic claw 41b is released and snapped into the locking ring groove 41c. The state after connection is shown in FIG. Figure 5 .

[0035] The disassembly of the cover 20 includes two steps: (1) push-pull unlocking, and (2) thread rotation. The cover 20 can be completely disassembled only after the above two steps. This design makes it difficult for children and the elderly to disassemble the cover 20 easily, and it is difficult for adults to disassemble it by mistake. In this way, when the laser pen is working, the cover 20 can effectively protect the laser head and reduce the damage caused by the strong laser beam to the human eye. The safety is improved while ensuring the detachable function of the cover 20.

[0036] In this embodiment, the elastic claw is unlocked by axial movement of the unlocking member, but it is not limited to this unlocking method. A bending member that can directly push the elastic claw to tilt outward can also be provided on the elastic claw. After the finger member is inserted into the bending member and pulled outward, the elastic claw can be directly tilted outward to achieve unlocking.

[0037] The above has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A threaded locking structure for a cover, provided between a main body and a cover body covering the head end of the main body, including a threaded connection portion, characterized in that: A locking connection portion is also provided between the main body and the cover body, and the locking connection portion includes a snap-on connector and an unlocking member. When the main body and the cover body are screwed into place through the threaded connection portion, the cover body is snap-connected and locked to the main body through the snap-on connector; when the unlocking member unlocks the snap-on connector, the cover body can be screwed loose relative to the main body thread.

2. The threaded locking structure for a cover according to claim 1, characterized in that: The threaded connection portion includes an external thread arranged on the outer periphery of the main body and an internal thread arranged on the inner periphery of the cover body. The external thread and the internal thread are threadedly connected. The external thread is arranged on a side of the main body close to the cover body relative to the locking connection portion, and the internal thread is arranged on a side of the cover body away from the main body relative to the locking connection portion.

3. The threaded locking structure for a cover according to claim 1, characterized in that: The snap-fit connector includes a claw mounting ring disposed on the cover body, an elastic claw is provided at one end of the claw mounting ring close to the main body, and a locking ring groove is provided on the outer periphery of the main body for engaging with the elastic claw, and the unlocking member can cause the elastic claw to tilt up and disengage from the locking ring groove.

4. The threaded locking structure for a cover according to claim 3, characterized in that: A connecting skirt is provided at one end of the cover body close to the main body, the claw mounting ring is arranged on the inner circumference of the connecting skirt, a claw limiting groove is provided on the inner circumference of the connecting skirt close to the main body, and a claw limiting block is provided on the elastic claw to cooperate with the claw limiting groove.

5. The threaded locking structure for a cover according to claim 4, characterized in that: The clamping claw limiting groove is a V-shaped groove arranged on the inner circumference of the connecting skirt sleeve, and the clamping claw limiting block is a V-shaped block matched with the V-shaped groove, and a deformation gap is arranged between the V-shaped groove and the V-shaped block.

6. The threaded locking structure for a cover according to claim 3, characterized in that: The unlocking member comprises an unlocking block, and the elastic claw is provided with an unlocking inclined surface. One end of the unlocking block away from the main body can be inserted into the elastic claw and abut against the unlocking inclined surface.

7. A threaded locking structure for a cover as claimed in claim 6, wherein: The unlocking member comprises an unlocking sliding sleeve, one end of which is sleeved on the cover body and slides axially along the cover body, and the unlocking block is fixed to the other end of the unlocking sliding sleeve.

8. A threaded locking structure for a cover as claimed in claim 7, characterized in that: A sealing ring is provided between the unlocking block and the cover body.

9. The threaded locking structure for a cover according to claim 7, characterized in that: The outer periphery of the cover body is provided with a limiting shoulder for limiting the end of the unlocking sliding sleeve, and a running gap is provided between the limiting shoulder and the unlocking sliding sleeve.

10. Laser pointer, characterized in that: The invention comprises a thread locking structure for a cover as claimed in any one of claims 1 to 9.

Images