Handheld three-phase generator
By employing mounting posts and reinforcing blocks in the handheld three-phase generator, the problems of circuit board wobbling and cumbersome traditional fixing methods are solved, achieving stable positioning of the circuit board and simplifying installation, while enhancing the aesthetics and strength of the housing.
Patent Information
- Application Number
- CN202422881883.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-11-26
AI Technical Summary
The circuit boards of existing handheld three-phase generators are prone to damage due to shaking and collisions inside the housing, and the traditional bolt fixing method is cumbersome to install.
The circuit board is fixed by using a first mounting post and a second mounting post in conjunction with positioning holes and bolts. The strength of the mounting post is enhanced by a first reinforcing block and a second reinforcing block, and the housing is aligned and fixed by a second mounting post and a third mounting post.
This achieves stable positioning of the circuit board, reduces shaking, simplifies the installation process, enhances the aesthetics of the housing, and improves the strength of the mounting posts.
Smart Images
Figure CN223503200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of handheld testing instruments, and in particular to a handheld three-phase generator. Background Technology
[0002] A handheld three-phase generator is a handheld terminal that transmits three-phase pulse signals. Currently, handheld three-phase generators mainly consist of an upper housing and a lower housing. Inside the upper and lower housings are an LCD display circuit board and a main control circuit board that are interconnected. When the upper and lower housings are fixedly installed, the LCD display circuit board and the main control circuit board will shake and collide inside the housing, which can easily lead to damage to the two circuit boards. The current solution is to fix the two circuit boards to the housing with bolts, but this method makes the circuit board installation cumbersome. Utility Model Content
[0003] The technical problem solved by this utility model is to provide a handheld three-phase generator that facilitates the fixed connection of the circuit board.
[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a handheld three-phase generator, including an upper housing and a lower housing, which are connected and installed together. A liquid crystal display circuit board and a main control circuit board are disposed inside the upper housing. The liquid crystal display circuit board and the main control circuit board are connected by signals. A plurality of first mounting posts are disposed inside the upper housing. A first mounting hole is disposed in the first mounting post. A first positioning hole corresponding to the first mounting post is disposed on the liquid crystal display circuit board. When the liquid crystal display circuit board is installed inside the upper housing, the first positioning hole is fitted onto the first mounting post. A plurality of second positioning holes corresponding one-to-one with the positions of the plurality of first mounting posts are disposed on the main control circuit board. The diameter of the second positioning hole is larger than the diameter of the first mounting hole and smaller than the outer diameter of the first mounting post. The main control circuit board is disposed on the side of the liquid crystal display circuit board away from the upper housing, so that the main control circuit board abuts against the upper surface of the first mounting post. The device also includes a plurality of first mounting bolts, which pass through the second positioning holes and are fixed inside the first mounting post.
[0005] Furthermore, the upper housing has multiple second mounting posts on its inner side, which are located near the inner edge of the upper housing. Each second mounting post has a second mounting hole. The lower housing has multiple third mounting posts that correspond one-to-one with the second mounting posts. Each third mounting post has a third mounting hole that is connected to the bottom surface of the lower housing. The housing also includes second mounting bolts, which are inserted into the second mounting holes and the third mounting holes in sequence, thereby fixing the upper housing and the lower housing together.
[0006] The liquid crystal display circuit board and the main control circuit board are provided with clearance holes on their sides to avoid the second mounting post.
[0007] Furthermore, a first reinforcing block is provided between the second mounting post and the inner side of the upper housing, and a second reinforcing block is provided between the third mounting post and the inner side of the lower housing.
[0008] Furthermore, the signal connection terminal of the liquid crystal display circuit board is located on one side of the liquid crystal display circuit board, and the signal connection terminal of the main control circuit board is located on one side of the main control circuit board. The signal connection terminal of the liquid crystal display circuit board and the signal connection terminal of the main control circuit board are connected by a signal line.
[0009] Furthermore, the upper housing has a notch at the liquid crystal display circuit board for the liquid crystal panel to extend out.
[0010] The beneficial effects of this utility model are:
[0011] 1. In this structure, the first mounting post can be used to achieve the horizontal positioning of the liquid crystal display circuit board. The second positioning hole on the main control circuit board can be used to fix the liquid crystal display circuit board vertically while fixing the second positioning hole.
[0012] 2. In this structure, the upper and lower housings are respectively provided with second and third mounting posts, which facilitates the alignment and fixation of the upper and lower housings, while ensuring the aesthetics of the entire handheld three-phase generator.
[0013] 3. The strength of the first and second mounting columns can be enhanced by the setting of the first and second reinforcing blocks in this structure, thereby reducing the damage to the first and second mounting columns. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of a handheld three-phase generator according to an embodiment of this application.
[0015] Figure 2 This is a cross-sectional view of a handheld three-phase generator at the first mounting post, according to an embodiment of this application.
[0016] Figure 3 This is a cross-sectional view of a handheld three-phase generator according to an embodiment of this application at the second and third mounting posts.
[0017] Figure 4 This is a schematic diagram of the internal structure of a handheld three-phase generator according to an embodiment of this application.
[0018] Figure 5 This is a schematic diagram of the internal structure of a handheld three-phase generator when the main control circuit board is removed, according to an embodiment of this application.
[0019] The components in the diagram are labeled as follows: upper housing 1, lower housing 2, LCD display circuit board 3, main control circuit board 4, first mounting post 5, first mounting hole 6, first positioning hole 7, second positioning hole 8, first mounting bolt 9, second mounting post 10, third mounting post 11, clearance hole 12, and first reinforcing block 13. Detailed Implementation
[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0021] like Figures 1 to 5 As shown, an embodiment of this application discloses a handheld three-phase generator, including an upper housing 1 and a lower housing 2, which are connected and mounted together. The upper housing 1 houses a liquid crystal display circuit board 3 and a main control circuit board 4, which are signal-connected. Multiple first mounting posts 5 are provided inside the upper housing 1, each with a first mounting hole 6. The liquid crystal display circuit board 3 has a first positioning hole 7 corresponding to each first mounting post 5. When the liquid crystal display circuit board 3 is installed inside the upper housing 1, the first positioning hole 7 fits onto the first mounting post 5. The main control circuit board 4 has multiple second positioning holes 8 corresponding to the positions of the multiple first mounting posts 5. The diameter of the second positioning holes 8 is larger than the diameter of the first mounting holes 6 and smaller than the outer diameter of the first mounting posts 5. The main control circuit board 4 is located on the side of the liquid crystal display circuit board 3 away from the upper housing 1, so that the main control circuit board 4 abuts against the upper surface of the first mounting posts 5. The device also includes multiple first mounting bolts 9, which pass through the second positioning holes 8 and are fixed inside the first mounting posts 5.
[0022] Specifically, the upper housing 1 has a notch at the location of the liquid crystal display circuit board 3 for the liquid crystal panel to extend out.
[0023] Specifically, the upper end of the upper housing 1 and the lower housing 2 is also provided with signal terminals, which are connected to the main control circuit board 4. In actual use, the signal terminals can be connected to external devices through external signal lines to realize the transmission of three-phase signals.
[0024] Specifically, when assembling the aforementioned handheld three-phase generator, first, the LCD display circuit board 3 is installed in the upper housing 1, that is, the first positioning hole 7 of the LCD display circuit board 3 is fitted onto the first mounting post 5. Then, the main control circuit board 4 is connected to the LCD display circuit board 3. Next, the main control circuit board 4 is installed so that the second positioning hole 8 of the main control circuit board 4 corresponds one-to-one with the position of the first mounting post 5. Then, the first mounting bolt 9 is passed through the second positioning hole 8 and screwed into the first mounting hole 6 to fix the main control circuit board 4. Finally, the upper housing 1 and the lower housing 2 are aligned and installed.
[0025] In this structure, the first mounting post 5 enables the lateral positioning of the liquid crystal display circuit board 3. The second positioning hole 8 on the main control circuit board 4 enables the main control circuit board 4 to achieve longitudinal positioning of the liquid crystal display circuit board 3 while fixing the second positioning hole 8. This ensures that the internal liquid crystal display circuit board 3 and the main control circuit board 4 will not shake when the handheld three-phase generator is picked up, thus providing better protection for the liquid crystal display circuit board 3 and the main control circuit board 4.
[0026] In this embodiment, the upper housing 1 has a plurality of second mounting posts 10 disposed on its inner side, the second mounting posts 10 being disposed near the inner edge of the upper housing 1, and the second mounting posts 10 having a second mounting hole disposed therein. The lower housing 2 has a plurality of third mounting posts 11 corresponding one-to-one with the second mounting posts 10, the third mounting posts 11 having a third mounting hole disposed therein, the third mounting hole being through the bottom surface of the lower housing 2, and also including a second mounting bolt, the second mounting bolt being inserted into the second mounting hole and the third mounting hole in sequence, so that the upper housing 1 and the lower housing 2 are fixedly connected; the liquid crystal display circuit board 3 and the main control circuit board 4 have clearance holes 12 on their sides to avoid the second mounting posts 10.
[0027] Specifically, when installing the upper and lower shells, first align the upper and lower shells so that the second and third mounting holes are perpendicularly aligned. Then, insert the second mounting bolts into the second mounting post 10 and the third mounting post 11 in sequence and tighten them to fix the upper and lower shells.
[0028] In this structure, by setting the second mounting post 10 and the third mounting post 11 on the upper housing 1 and the lower housing 2 respectively, it is convenient to align and fix the upper housing 1 and the lower housing 2, while ensuring the aesthetics of the entire handheld three-phase generator.
[0029] In this embodiment, a first reinforcing block 13 is provided between the second mounting post 10 and the inner side of the upper housing 1, and a second reinforcing block is provided between the third mounting post 11 and the inner side of the lower housing 2.
[0030] In this structure, the strength of the first mounting post 5 and the second mounting post 10 can be enhanced by the setting of the first reinforcing block 13 and the second reinforcing block, thereby reducing the damage to the first mounting post 5 and the second mounting post 10.
[0031] In this embodiment, the signal connection terminal of the liquid crystal display circuit board 3 is located on one side of the liquid crystal display circuit board 3, and the signal connection terminal of the main control circuit board 4 is located on one side of the main control circuit board. The signal connection terminal of the liquid crystal display circuit board 3 and the signal connection terminal of the main control circuit board 4 are connected by a signal line.
[0032] Two sockets can be provided at both ends of the above signal line. Sockets can be provided at the signal connection end of the LCD display circuit board 3 and the signal connection end of the main control circuit board 4 respectively. The two sockets at both ends of the signal line can be inserted into the two sockets respectively to complete the signal connection between the LCD display circuit board 3 and the main control circuit board 4.
[0033] The above structural design facilitates the connection and disassembly of the two circuit boards, and makes it easy to replace one of the circuit boards if it is damaged.
[0034] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A handheld three-phase generator, characterized in that: The system includes an upper housing (1) and a lower housing (2), which are connected together. The upper housing (1) contains a liquid crystal display circuit board (3) and a main control circuit board (4), which are signal-connected. The upper housing (1) has multiple first mounting posts (5) on its inner side, each with a first mounting hole (6). The liquid crystal display circuit board (3) has a first positioning hole (7) corresponding to one of the first mounting posts (5). When the liquid crystal display circuit board (3) is installed inside the upper housing (1), the first positioning hole (7)... 7) The main control circuit board (4) is fitted onto the first mounting post (5). It is provided with a plurality of second positioning holes (8) corresponding one-to-one with the positions of the plurality of first mounting posts (5). The diameter of the second positioning hole (8) is larger than the diameter of the first mounting hole (6) and smaller than the outer diameter of the first mounting post (5). The main control circuit board (4) is located on the side of the liquid crystal display circuit board (3) away from the upper housing (1), so that the main control circuit board (4) abuts against the upper surface of the first mounting post (5). It also includes a plurality of first mounting bolts (9). The first mounting bolts (9) pass through the second positioning holes (8) and are fixed inside the first mounting post (5).
2. The handheld three-phase generator as described in claim 1, characterized in that: The upper housing (1) is provided with a plurality of second mounting posts (10) on its inner side. The second mounting posts (10) are located near the inner edge of the upper housing (1). The second mounting posts (10) are provided with second mounting holes. The lower housing (2) is provided with a plurality of third mounting posts (11) that correspond one-to-one with the second mounting posts (10). The third mounting posts (11) are provided with third mounting holes. The third mounting holes are connected to the bottom surface of the lower housing (2). The lower housing (2) is also provided with second mounting bolts. The second mounting bolts are inserted into the second mounting holes and the third mounting holes in sequence, so that the upper housing (1) and the lower housing (2) are fixedly connected. The liquid crystal display circuit board (3) and the main control circuit board (4) are provided with clearance holes (12) on their sides to avoid the second mounting post (10).
3. A handheld three-phase generator as described in claim 2, characterized in that: A first reinforcing block (13) is provided between the second mounting post (10) and the inner side of the upper housing (1), and a second reinforcing block is provided between the third mounting post (11) and the inner side of the lower housing (2).
4. A handheld three-phase generator as described in claim 1, characterized in that: The signal connection terminal of the liquid crystal display circuit board (3) is located on one side of the liquid crystal display circuit board (3), and the signal connection terminal of the main control circuit board (4) is located on one side of the main control circuit board. The signal connection terminal of the liquid crystal display circuit board (3) and the signal connection terminal of the main control circuit board (4) are connected by a signal line.
5. A handheld three-phase generator as described in claim 1, characterized in that: The upper housing (1) is provided with a notch for the liquid crystal panel to extend from the liquid crystal display circuit board (3).