USB box screwing and fixing structure
By setting external threads and avoiding planes on the side wall of the front case of the USB box and installing elastic locks on the avoiding plane, the problem of loosening of the plastic nut due to vibration is solved, and the detachability of the USB box is achieved, avoiding the Difficulty in disassembly caused by the use of glue.
Patent Information
- Application Number
- CN202420849383.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-22
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-04-22
AI Technical Summary
In the existing USB box fixing scheme, plastic nuts are easily loosened after a long period of vibration of the car. In order to prevent loosening, customers may use glue to fix it, but this can cause disassembly and even damage the USB box.
A USB box tightening and fixing structure is designed, with the side wall of the front shell equipped with external threads and a evacuation plane. An elastic lock is provided on the evacuation plane. The elastic lock can hold the nut forward to prevent it from loosening. , and can be pressed in the avoiding space so that the nut can be detached backward.
It effectively prevents the nut from loosening due to vibration, and ensures the repeated disassemblyability of the USB box, avoiding disassembly difficulties and structural damage caused by the use of glue.
Smart Images
Figure CN222442004U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of USB boxes, in particular to a USB box screwing and fixing structure. Background Art
[0002] Currently, this fixing solution is often used for USB boxes: the front shell of the USB box is designed as a threaded structure, and is locked and fixed to the IP through a plastic nut.
[0003] The main drawbacks of this solution are:
[0004] 1. After the plastic nut is tightened, long-term vehicle vibration may easily cause the plastic nut to rotate in the opposite direction, resulting in loosening.
[0005] 2. To prevent the plastic nut from loosening due to long-term vehicle vibration, some customers will apply glue on the plastic nut. This method can prevent the plastic nut from loosening, but it will make disassembly difficult and even damage the USB box structure. Utility Model Content
[0006] The utility model aims to provide a USB box screwing and fixing structure to solve the problem that the plastic nut is easy to loosen after long-term vibration, and at the same time meet the requirement of convenient disassembly.
[0007] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides a USB box tightening and fixing structure, including a front shell, the front shell is in a cylindrical shape extending axially forward and backward, the front end of the front shell is provided with a baffle, the side wall of the front shell is provided with an external thread and a avoidance plane, the avoidance plane passes through the external thread, and the external thread can be threadedly connected with a nut to form a avoidance space between the avoidance plane and the nut; an elastic lock buckle is provided on the avoidance plane, and the elastic lock buckle can press the nut forward to prevent the nut from loosening backward; the elastic lock buckle can be pressed in the avoidance space so that the nut can be disassembled backward.
[0008] Furthermore, the external thread is arranged on the front half of the side wall of the front shell, the rear half of the side wall of the front shell is arranged as a smooth surface, and the avoidance plane passes through the smooth surface backwards.
[0009] Furthermore, the rear end of the elastic lock buckle is fixed on the avoidance plane, the front end of the elastic lock buckle is inclined toward the front outer side, and the front end of the elastic lock buckle can push the nut forward.
[0010] Furthermore, the front end of the elastic lock buckle is step-shaped and can press forward against the inner thread edge of the nut.
[0011] Furthermore, a front end of the elastic lock buckle is provided with a plurality of steps, and the plurality of steps are gradually distributed from inside to outside and backward.
[0012] Furthermore, the nut includes a cylindrical nut at the front end and a polygonal nut at the rear end, and the elastic lock buckle can push the polygonal nut forward.
[0013] Furthermore, the front end surface of the cylindrical nut is provided with a plurality of circular convex point structures.
[0014] Furthermore, a PCBA assembly is provided inside the front shell, a rear shell is fastened and fixed to the rear end of the front shell, one end of the PCBA assembly is exposed outward through the baffle, and the other end of the PCBA assembly is exposed outward through the rear shell.
[0015] Furthermore, the front shell is a PC+ABS front shell, the elastic lock buckle is a plastic elastic lock buckle, the nut is a PC+ABS nut, and the rear shell is a PC+ABS rear shell.
[0016] Further, the front shell may pass through the mounting hole of the IP structure so that the baffle is located in front of the IP structure and the nut is located behind the IP structure.
[0017] In summary, the technical solution of the utility model has the following beneficial effects: the structure design of the utility model is reasonable, (1) the front shell is cylindrical and extends axially forward and backward, the front end of the front shell is provided with a baffle, the side wall of the front shell is provided with an external thread and a avoidance plane, the avoidance plane passes through the external thread, and the external thread can be connected with the nut thread, so that a avoidance space is formed between the avoidance plane and the nut; thus, the avoidance space can be used to provide an operating space for the elastic movement of the subsequent elastic lock. (2) the elastic lock is provided on the avoidance plane, and the elastic lock can support the nut forward to prevent the nut from loosening backward; thus, the elastic lock can be used to support the nut forward so that the nut cannot loosen backward, and at this time, the nut and the baffle can be clamped together on the mounting hole (such as the mounting hole of the IP structure). (3) the elastic lock can be pressed in the avoidance space so that the nut can be disassembled backward; thus, when the nut needs to be installed forward or disassembled backward, it is only necessary to press the elastic lock in the avoidance space to avoid the elastic lock from interfering with the forward and backward movement of the nut. From this analysis, it can be seen that the utility model can effectively meet the requirements of the USB box being assembled tightly and being removable repeatedly by providing the avoidance space and the elastic lock. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the explosion structure of the utility model;
[0019] Figure 2 It is a three-dimensional structural schematic diagram of the front shell of the utility model;
[0020] Figure 3It is a three-dimensional structural schematic diagram of the nut of the utility model;
[0021] Figure 4 This is a schematic diagram of the first perspective three-dimensional structure of the utility model;
[0022] Figure 5 This is a schematic diagram of the second viewing angle of the three-dimensional structure of the utility model;
[0023] Figure 6 It is a schematic diagram of the structure of the elastic lock buckle and the nut of the utility model when they are matched;
[0024] Figure 7 It is a structural schematic diagram of a nut of the utility model;
[0025] Explanation of the reference numerals: 1-front shell, 2-nut, 3-PCBA assembly, 4-rear shell, 5-IP structure, 6-avoidance space.
[0026] 101-baffle, 102-external thread, 103-avoidance plane, 104-elastic lock buckle, 105-step, 106-smooth surface; 201-cylindrical nut, 202-polygonal nut, 203-internal thread, 204-circular convex point structure; 501-mounting hole. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention, but this does not constitute a limitation on the protection scope of the present invention.
[0028] In the present invention, for a clearer description, the following explanation is made: the observer faces the attached Figure 1 For observation, the lower left side of the observer is set as the front, and the upper right side of the observer is set as the back. It should be pointed out that the terms "front end", "rear end", "left side", "right side", "middle", "above", "below" and the like in the text indicate directions or positional relationships based on the directions or positional relationships set in the drawings, which are only for the convenience of clearly describing the present invention, and do not indicate or imply that the structure or component referred to must have a specific direction or be constructed in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", "third", and "fourth" are only used for the purpose of clarity or simplification of description, and cannot be understood as indicating or implying relative importance or quantity.
[0029] See also Figures 1 to 7The present embodiment provides a USB box tightening and fixing structure, including a front shell 1, which is cylindrical and extends axially forward and backward. A baffle 101 is provided at the front end of the front shell 1, and an external thread 102 and an avoidance plane 103 are provided on the side wall of the front shell 1. The avoidance plane 103 passes through the external thread 102, and the external thread 102 can be threadedly connected with the nut 2 to form an avoidance space 6 between the avoidance plane 103 and the nut 2; an elastic lock buckle 104 is provided on the avoidance plane 103, and the elastic lock buckle 104 can press the nut 2 forward to prevent the nut 2 from loosening backward; the elastic lock buckle 104 can be pressed in the avoidance space 6 so that the nut 2 can be disassembled backward. Function: (1) The front shell is cylindrical and extends axially forward and backward. A baffle is provided at the front end of the front shell. The side wall of the front shell is provided with an external thread and an avoidance plane. The avoidance plane passes through the external thread. The external thread can be connected with the nut thread to form an avoidance space between the avoidance plane and the nut. Thus, the avoidance space can be used to provide an operating space for the elastic movement of the subsequent elastic lock. (2) The elastic lock is provided on the avoidance plane. The elastic lock can press the nut forward to prevent the nut from loosening backward. Thus, the elastic lock can be used to press the nut forward so that the nut cannot loosen backward. At this time, the nut and the baffle can be clamped together on the mounting hole (such as the mounting hole of the IP structure). (3) The elastic lock can be pressed in the avoidance space so that the nut can be disassembled backward. Thus, when the nut needs to be installed forward or disassembled backward, it is only necessary to press the elastic lock in the avoidance space to avoid the elastic lock from interfering with the forward and backward movement of the nut. From this analysis, it can be seen that the utility model can effectively meet the requirements of the USB box being assembled tightly and being removable repeatedly by providing the avoidance space and the elastic lock.
[0030] Specifically, the external thread 102 is provided on the front half of the side wall of the front shell 1, the rear half of the side wall of the front shell 1 is provided as a smooth surface 106, and the avoidance plane 103 passes through the smooth surface 106 backward. Function: The smooth surface 106 can facilitate the nut to move forward or backward quickly to the desired position, thereby facilitating disassembly and installation. Preferably, the elastic lock is located on the avoidance plane 103 between the external threads 102 on both sides, so that it is more convenient for the elastic lock to hold the nut forward.
[0031] Specifically, the rear end of the elastic lock buckle 104 is fixed on the avoidance plane 103, and the front end of the elastic lock buckle 104 is inclined toward the front and outside, and the front end of the elastic lock buckle 104 can push forward against the nut 2. Function: Using the elastic deformation characteristics, the elastic lock buckle maintains the tendency to deform outward.
[0032] Specifically, the front end of the elastic lock buckle 104 is stepped and can push forward against the edge of the internal thread 203 of the nut 2. Function: The stepped front end makes it easier for the elastic lock buckle 104 to buckle with the edge of the internal thread 203 of the nut 2.
[0033] Specifically, the front end of the elastic lock buckle 104 is provided with a plurality of steps 105, which are gradually distributed from the inside to the outside and backward. Function: The plurality of steps 105 can correspond to different positions of the nut 2. Preferably, the lock buckle has a wall thickness of 2.0 mm ± 0.5 mm, and the steps are divided into 5 levels, with a step height of 0.3 mm ± 0.1 mm and a step width of 0.4 mm ± 0.1 mm. This step structure can effectively ensure that it can withstand the plastic nut.
[0034] Specifically, the nut 2 includes a cylindrical nut 201 at the front end and a polygonal nut 202 at the rear end, and the elastic lock buckle 104 can push the polygonal nut 202 forward. Function: The polygonal nut 202 can be easily screwed, while the cylindrical nut 201 can be better clamped with the baffle 101.
[0035] Specifically, the front end surface of the cylindrical nut 201 is provided with a plurality of circular convex structures 204. Function: The IP locking contact surface with the IP structure 5 has a circular convex structure, so that the nut and the IP structure 5 can reach a locked state when rotating and locking. Preferably, the convex height of the circular convex structure 204 is 0.5 mm ± 0.1 mm, and the convex diameter is 1.3 mm ± 0.3 mm, which can effectively ensure that the nut and the IP structure are in a fastened state.
[0036] Specifically, the PCBA component 3 is arranged inside the front shell 1, and the rear shell 4 is fastened and fixed to the rear end of the front shell 1. One end of the PCBA component 3 is exposed to the outside through the baffle 101, and the other end of the PCBA component 3 is exposed to the outside through the rear shell 4. Function: When the rear shell 4 is removed, the PCBA component 3 can be conveniently loaded into the front shell 1 from the rear end of the front shell 1, and the two ends of the PCBA component 3 are exposed to facilitate electrical connection with the outside.
[0037] Specifically, the front shell 1 is a PC+ABS front shell, the elastic lock buckle is a plastic elastic lock buckle, the nut 2 is a PC+ABS nut, and the rear shell 4 is a PC+ABS rear shell. Function: This material setting can better balance production cost and product quality.
[0038] Specifically, the front shell 1 can pass through the mounting hole 501 of the IP structure 5, so that the baffle 101 is located in front of the IP structure 5 and the nut 2 is located behind the IP structure 5. Function: The baffle 101 and the nut 2 are respectively located on both sides of the IP structure 5, so that when the nut is tightened, the front shell 1 and the IP structure 5 can be installed.
[0039] Front shell: The material is PC+ABS, and multiple parts such as PCBA components, back shell and nuts are fixed on this part. It has threads and elastic locks, so that the nuts can be rotated and locked with the threads.
[0040] PCBA assembly: It integrates many electronic components such as USB sockets, is positioned through the front shell slots, and is fixed on the front shell by supporting it from behind through the rear shell.
[0041] Back cover: Made of PC+ABS, it is fixed to the front cover through a buckle structure. It fixes and protects the PCBA components.
[0042] IP structure: In-vehicle parts, there is an open hole structure at the USB box assembly position, and the USB box is fixed to this mounting hole position by tightening the nut.
[0043] Nut: The material is PC+ABS, with a threaded structure on the inside.
[0044] In summary, the new solution adds an elastic lock buckle on the front shell. After the nut locks the front shell, the elastic lock buckle will hold the nut from the back, so that it cannot loosen backwards. This solution is simple to assemble, low in cost, firm and reliable, and can meet customers' multiple disassembly requirements.
[0045] Assembly steps:
[0046] 1. Insert the PCBA assembly into the limit slot in the front shell for pre-fixation.
[0047] 2. The rear shell is fastened to the front shell through a buckle structure, and the rear shell also supports the PCBA assembly to fix it on the front shell.
[0048] 3. After assembling the rear shell, PCBA assembly and front shell accordingly, insert the assembly into the mounting hole structure corresponding to the IP structure.
[0049] 4. Tighten the nut from the back to the USB box body so that the entire assembly and the IP structure are locked and fixed. Check to make sure that the elastic lock has locked the nut.
[0050] The above is a preferred embodiment of the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications are also considered to be within the protection scope of the present invention.
Claims
1. A USB box screwing and fixing structure, comprising a front shell (1), characterized in that: The front shell (1) is cylindrical and extends axially forward and backward. A baffle (101) is provided at the front end of the front shell (1). The side wall of the front shell (1) is provided with an external thread (102) and a avoidance plane (103). The avoidance plane (103) passes through the external thread (102). The external thread (102) can be threadedly connected with the nut (2) to form an avoidance space (6) between the avoidance plane (103) and the nut (2); an elastic lock buckle (104) is provided on the avoidance plane (103). The elastic lock buckle (104) can press the nut (2) forward to prevent the nut (2) from loosening backward; the elastic lock buckle (104) can be pressed in the avoidance space (6) to allow the nut (2) to be disassembled backward.
2. The USB box screwing and fixing structure according to claim 1, characterized in that: The external thread (102) is arranged on the front half of the side wall of the front shell (1), the rear half of the side wall of the front shell (1) is arranged as a smooth surface (106), and the avoidance plane (103) passes through the smooth surface (106) backwards.
3. The USB box screwing and fixing structure according to claim 1, characterized in that: The rear end of the elastic lock buckle (104) is fixed on the avoidance plane (103), the front end of the elastic lock buckle (104) is inclined toward the front outer side, and the front end of the elastic lock buckle (104) can push forward against the nut (2).
4. The USB box screwing and fixing structure according to claim 3, characterized in that: The front end of the elastic lock buckle (104) is in a step shape and can push forward against the edge of the internal thread (203) of the nut (2).
5. The USB box screwing and fixing structure according to claim 4, characterized in that: The front end of the elastic lock buckle (104) is provided with a plurality of steps (105), and the plurality of steps (105) are gradually distributed from the inside to the outside and backward.
6. A USB box screwing and fixing structure according to any one of claims 1 to 5, characterized in that: The nut (2) comprises a cylindrical nut (201) at the front end and a polygonal nut (202) at the rear end, and the elastic lock buckle (104) can push the polygonal nut (202) forward.
7. A USB box screwing and fixing structure according to claim 6, characterized in that: The front end surface of the cylindrical nut (201) is provided with a plurality of circular convex point structures (204).
8. A USB box screwing and fixing structure according to any one of claims 1 to 5 and 7, characterized in that: A PCBA component (3) is arranged inside the front shell (1); a rear shell (4) is fastened and fixed to the rear end of the front shell (1); one end of the PCBA component (3) is exposed to the outside through the baffle (101); and the other end of the PCBA component (3) is exposed to the outside through the rear shell (4).
9. The USB box screwing and fixing structure according to claim 8, characterized in that: The front shell (1) is a PC+ABS front shell, the elastic lock buckle is a plastic elastic lock buckle, the nut (2) is a PC+ABS nut, and the rear shell (4) is a PC+ABS rear shell.
10. A USB box screwing and fixing structure according to any one of claims 1 to 5, 7 and 9, characterized in that: The front shell (1) can pass through the mounting hole (501) of the IP structure (5), so that the baffle (101) is located in front of the IP structure (5) and the nut (2) is located behind the IP structure (5).