Push type laser module

Abstract

The utility model discloses a push-press type laser module. The push-press type laser module comprises a module shell, at least one focusing lens, a pressure spring, a laser shell and a laser generating element arranged in the laser shell. A first opening is formed in the lower end of the module shell, a mounting cavity is formed in the module shell, and a second opening is formed in the upper end. The laser shell is hollow, through holes are formed in the upper end and the lower end of the laser shell, the focusing lens, the compression spring and the laser shell are sequentially arranged in the mounting cavity, and the front end of the focusing lens abuts against the inner side of the second opening. The front end of the pressure spring elastically abuts against the rear end of the focusing lens, and the rear end of the pressure spring elastically abuts against the front end of the laser shell. The laser shell is crimped and inserted into the module shell, and the outer wall of the laser shell is in interference connection with the inner wall of the module shell. The laser shell is electrically propelled, so that the laser shell is inserted into the module shell in a pushing and pressing manner to be in interference connection, focusing assembly is realized, the operation is simple in one step, the process is simplified, the processing cost is reduced, and the productivity and the yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of laser module assembly, in particular to a laser module that realizes focusing assembly in a push-pressing manner. Background Art

[0002] A laser pointer, also known as a laser pen, is a pen-shaped emitter that designs visible lasers into a portable, easy-to-hold form and processes laser modules (diodes). It is usually used in places such as reports, teaching, and meetings. Users use it to project a light spot or a light ray to point to a specific position on the displayed screen, so as to guide others to look at that position, so as to better conduct reports, teaching, and meetings. The structure of the existing laser pointer is connected and combined through the threaded connection of the external thread of the laser and the internal thread of the shell. This method has the following disadvantages: First, it is necessary to process internal and external threads, which increases the mold cost; Second, because it is a threaded connection, the focusing is a screwing-in type, and the manual focusing and electric focusing times are both too long, and it is not conducive to the automation transformation of the production line; Third, there is a gap in the threaded connection. Generally, it is necessary to glue and fix after focusing, but the laser will shift or loosen during the transfer production process, and there are too many defective products in the subsequent inspection. Content of the Utility Model

[0003] In order to solve the above problems, the technical solution of this application proposes a push-pressing type laser module, which realizes the focusing assembly of the assembly structure of the laser pointer in a push-pressing manner.

[0004] The technical solution disclosed by the utility model, a push-pressing type laser module, includes a module housing, at least one focusing lens, a compression spring, a laser housing, and a laser generating element arranged in the laser housing. The lower end of the module housing is provided with a first opening, the inside is an installation cavity, and the upper end is provided with a second opening. The laser housing is a hollow housing with through holes at both the upper and lower ends. The focusing lens, the compression spring, and the laser housing are sequentially placed in the installation cavity. The front end of the focusing lens abuts against the inner side of the second opening. The front end of the compression spring elastically abuts against the rear end of the focusing lens. The rear end of the compression spring elastically abuts against the front end of the laser housing. The laser housing is press-fitted and inserted into the module housing, and the outer wall of the laser housing is in interference connection with the inner wall of the module housing.

[0005] Further, the focusing lens, the compression spring, the laser housing and the module housing are coaxially arranged.

[0006] As a preferred solution: The module housing is a cylindrical housing made of a heat-conducting metal material. The installation cavity includes a cylindrical cavity portion near the second opening of the module housing, an outward-expanded circular cavity portion extending backward from the cylindrical cavity portion, and a slightly-expanded circular cavity portion extending backward from the outward-expanded circular cavity portion to the port of the first opening. The laser housing is a hollow cylinder.

[0007] As a preferred solution: the laser housing is made of metal or plastic, the laser generating element is a three-pin laser or a four-pin laser, the pins of the laser generating element face the direction of the first opening, and the laser of the laser generating element passes through the focusing lens and emits from the second opening.

[0008] As a preferred solution: the laser generating element is inserted into the laser housing in an embedded manner, and the side wall of the laser generating element is in interference connection with the inner wall of the laser housing.

[0009] Compared with the prior art, the present utility model has obvious advantages and beneficial effects. Specifically, in the prior art of producing laser pens, the internal laser module is connected by designing threads. By rotating, the external threads of the laser are connected to the internal threads of the module housing. Rotate to the specified number of turns, or the depth of the laser inserted, to complete the assembly of focusing in sequence. Setting up equipment to drive rotation automatically and processing the internal and external threads in advance are relatively complex and costly. However, this solution is designed with an interference connection structure by pressing. The interference pressing of the laser housing and the module housing eliminates the need to process internal and external threads, simplifies the process, and saves the mold cost. The focusing assembly by electric propulsion is more accurate and faster, and is completed in one-step processing, improving the production efficiency and yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 FIG. is a schematic exploded view of the structure of an embodiment of a push-type laser module disclosed in the present utility model.

[0011] Figure 2 FIG. is a cross-sectional view of the module housing structure of the push-type laser module disclosed in the present utility model.

[0012] Figure 3 FIG. is a cross-sectional view of the overall structure of the push-type laser module disclosed in the present utility model.

[0013] Figure 4 FIG. is a three-dimensional view of the overall structure of the push-type laser module disclosed in the present utility model.

[0014] Figure 5 FIG. is a schematic exploded view of the structure of an embodiment of the push-type laser module using a four-pin laser disclosed in the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present disclosure without creative efforts also belong to the scope of protection of the present disclosure.

[0016] Please refer to Figures 1 to 4 , a push-type laser module provided by this technical solution, including a module housing 1, at least one focusing lens 2, a compression spring 3, a laser housing 4, and a laser generating element 5 disposed in the laser housing 4. The lower end of the module housing 1 is provided with a first opening 101, the interior is an installation cavity, and the upper end is provided with a second opening 102. The laser housing 4 is a hollow housing with through holes at both the upper and lower ends. The installation cavity sequentially places the focusing lens 2, the compression spring 3, and the laser housing 4. The front end of the focusing lens 2 abuts against the inner side of the second opening 102, the front end of the compression spring 3 elastically abuts against the rear end of the focusing lens 2, the rear end of the compression spring 3 elastically abuts against the front end of the laser housing 4, the laser housing 4 is press-fitted and inserted into the module housing 1, and the outer wall of the laser housing 4 is in interference connection with the inner wall of the module housing 1. The focusing lens 2, the compression spring 3, the laser housing 4, and the module housing 1 are coaxially arranged.

[0017] In the production and processing of laser pens in the prior art, the internal laser module is connected by designing threads. By rotating, the external threads of the laser housing 4 are connected to the internal threads of the module housing 1. Rotating to a specified number of turns, or the depth of the laser housing screwed in, reaches the assembly for focusing in sequence. Setting up equipment for automated rotation and pre-completing the processing of internal and external threads is relatively complex and costly. Through the technical solution of this embodiment, it is designed as a structure of interference press-fitting connection. The interference press-fitting of the laser housing 4 and the module housing 1 does not require processing internal and external threads, simplifies the process, and saves mold costs. The focusing assembly by electric propulsion is more accurate and faster, and is completed in one step of processing, improving production efficiency and yield.

[0018] Preferably, the module housing 1 is a cylindrical housing made of a heat-conductive metal material to achieve heat dissipation. The installation cavity includes a cylindrical cavity portion 103 near the second opening 102 of the module housing 1, an outward-expanded circular cavity portion 104 extending from the cylindrical cavity portion 103 to the rear end, and a slightly-expanded circular cavity portion 105 extending from the outward-expanded circular cavity portion 104 to the port of the first opening 101. The laser housing 4 is a hollow cylinder.

[0019] Preferably, the laser housing 4 is made of metal or plastic material, and the laser generating element 5 is a three-pin laser or a four-pin laser ( Figure 5 as shown), the pins of the laser generating element 5 face the direction of the first opening 101, and the laser of the laser generating element 5 passes through the focusing lens 2 and emits from the second opening 102.

[0020] Furthermore, the laser generating element 5 is embedded and plugged into the laser housing 4, and the side wall of the laser generating element 5 is in interference connection with the inner wall of the laser housing 4.

[0021] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to technologies in the market, or to enable other ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A push-type laser module, characterized in that, It includes a module housing (1), at least one focusing lens (2), a compression spring (3), a laser housing (4), and a laser generating element (5) disposed within the laser housing (4). The lower end of the module housing (1) is provided with a first opening (101), the interior is an installation cavity, and the upper end is provided with a second opening (102). The laser housing (4) is a hollow housing with through holes at both the upper and lower ends. The focusing lens (2), the compression spring (3), and the laser housing (4) are sequentially placed in the installation cavity. The front end of the focusing lens (2) abuts against the inner side of the second opening (102), the front end of the compression spring (3) elastically abuts against the rear end of the focusing lens (2), the rear end of the compression spring (3) elastically abuts against the front end of the laser housing (4), and the laser housing (4) is press-fitted and inserted into the module housing (1), and the outer wall of the laser housing (4) is in interference connection with the inner wall of the module housing (1).

2. The push-type laser module according to claim 1, wherein The focusing lens (2), the compression spring (3), the laser housing (4) and the module housing (1) are coaxially arranged.

3. The push-type laser module according to claim 2, characterized in that, The module housing (1) is a cylindrical housing made of a heat-conductive metal material. The installation cavity includes a cylindrical cavity portion (103) near the second opening (102) of the module housing (1), an outward-expanded circular cavity portion (104) extending rearward from the cylindrical cavity portion (103), and a slightly-expanded circular cavity portion (105) extending rearward from the outward-expanded circular cavity portion (104) to the port of the first opening (101). The laser housing (4) is a hollow cylinder.

4. The push-type laser module according to claim 3, wherein, The laser housing (4) is made of metal or plastic. The laser generating element (5) is a three-pin laser or a four-pin laser. The pins of the laser generating element (5) face the direction of the first opening (101), and the laser of the laser generating element (5) passes through the focusing lens (2) and emits from the second opening (102).

5. The push-type laser module according to claim 4, characterized in that, The laser generating element (5) is embedded and plugged into the laser housing (4), and the side wall of the laser generating element (5) is in interference connection with the inner wall of the laser housing (4).

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