Screw-installation-free automobile key shell structure

Abstract

The utility model relates to a screw-free installation automobile key shell structure, and belongs to the technical field of automobile key shells, the screw-free installation automobile key shell structure comprises a lower shell, an upper shell is arranged on the lower shell, a key installation plate is arranged on the upper shell, and a sleeve is fixedly installed in the upper shell. According to the automobile key shell structure free of screw installation, when the lower shell and the upper shell are assembled, only an inserting barrel needs to be inserted into a sleeve, the upper shell, the lower shell and the upper shell are combined, then a conical barrel is inserted into the inserting barrel and connected to the outer surface of a guide rod in a sleeving mode, and therefore a telescopic spring is pushed to the innermost portion of the sleeve and extrudes four limiting plates; the four limiting plates move towards the opposite sides, so that the positioning blocks on the limiting plates penetrate into the positioning grooves in the sleeve, the positioning blocks are locked, the conical barrel is fixed, then one end of the inserting barrel is sealed and covered with the rubber sealing cover, and therefore assembling of the lower shell and the upper shell is rapidly completed. And after part of the buckles are damaged due to falling, the lower shell and the upper shell can still be stably connected.

Description

Technical Field

[0001] This utility model relates to the field of automotive key shell technology, specifically a screwless automotive key shell structure. Background Technology

[0002] A car key case is an outer shell used to protect car keys. It not only prevents physical damage to the key, such as scratches and collisions, but also serves a decorative purpose, enhancing the overall appearance of the car key. Car key cases can be divided into plastic key cases and metal key cases based on their materials. Plastic key cases are made of materials such as polycarbonate, ABS plastic, or silicone, while metal key cases are made of aluminum alloy or stainless steel. Car key cases can also be divided into full-coverage key cases, semi-coverage key cases, and folding key cases based on their styles. The production of plastic car key cases involves injection molding, molding, and post-processing, followed by assembly and sealing. The production of metal car key cases involves stamping, CNC machining, and surface treatment, followed by assembly and sealing. In existing technologies, plastic key shells are mainly composed of an upper shell and a lower shell, with connecting clips installed on both. Since the clips are also made of plastic in one piece, the connection between the clip and the shell may break when the plastic key shell is dropped, affecting the normal use of the clip and causing damage to the plastic key shell. This increases the cost of replacing the plastic key shell. Furthermore, some upper and lower shells are fixed with screws, making the assembly process cumbersome. Therefore, a screwless installation structure for car key shells is proposed to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a screwless car key shell structure, which has the advantages of stable installation and convenient assembly. It solves the problem that plastic key shells are mainly composed of an upper shell and a lower shell, and the upper and lower shells are equipped with connecting buckles. Since the buckles are also made of plastic in one piece, the connection between the buckle and the shell breaks when the plastic key shell is dropped, which affects the normal use of the buckle and leads to damage to the plastic key shell, increasing the cost of replacing the plastic key shell. Furthermore, the use of screws to fix part of the upper and lower shells makes the assembly process more troublesome.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a screwless car key housing structure, including a lower housing, an upper housing provided on the lower housing, and a button mounting plate provided on the upper housing;

[0005] A sleeve is fixedly installed inside the upper shell, and a plug-in cylinder is fixedly installed inside the lower shell. Four positioning blocks for fixing the sleeve are slidably installed inside the plug-in cylinder. A limiting plate located inside the plug-in cylinder is fixedly installed on each of the four positioning blocks. A guide rod with one end penetrating through and extending to the outside is fixedly installed inside the sleeve. A tapered cylinder is inserted into the plug-in cylinder, and a telescopic spring is fixedly connected to one end of the tapered cylinder.

[0006] Furthermore, both the lower and upper shells are fixedly installed with buckles, and one end of the sleeve is fitted with a rubber sealing cap for sealing.

[0007] Furthermore, the lower shell and the upper shell are snapped together, and the button mounting plate is installed inside the upper shell.

[0008] Furthermore, the plug-in cylinder and the lower shell are integrally injection molded structures, and the plug-in cylinder has four rectangular slots that are adapted to the positioning blocks, and the positioning blocks are trapezoidal.

[0009] Furthermore, the sleeve and the upper shell are integral injection molded structures, and four positioning grooves are provided on the sleeve. One end of the positioning block passes through and extends into the positioning groove.

[0010] Furthermore, the tapered cylinder has a circular hole at its smaller diameter end that matches the guide rod, and one end of the guide rod passes through the telescopic spring and extends into the interior of the circular hole.

[0011] Furthermore, the buckle includes two plastic pieces, each with a boss fixedly mounted on one side of its opposite side, and the number of buckles is eight.

[0012] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0013] This screwless car key shell assembly structure, featuring positioning blocks and a conical cylinder, allows for easy assembly of the lower and upper shells. Simply insert the connector into the sleeve and join the upper and lower shells together. Then, insert the conical cylinder into the connector and fit it onto the outer surface of the guide rod. This pushes the telescopic spring to the innermost part of the sleeve, compressing four limiting plates. The four limiting plates move to opposite sides, allowing the positioning blocks on the limiting plates to penetrate into the positioning grooves inside the sleeve, thus locking the positioning blocks and securing the conical cylinder. Finally, a rubber sealing cap seals one end of the connector, quickly completing the assembly of the lower and upper shells. Even if some clips are damaged due to a fall, the lower and upper shells can still be stably connected, avoiding the need to replace the car key shell directly. This significantly enhances the practicality of this screwless car key shell assembly structure. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the present utility model. Figure 1 Enlarged view of point A in the image;

[0016] Figure 3 This is a three-dimensional cross-sectional view of the plug-in cylinder, positioning block, and limiting plate of this utility model.

[0017] Figure 4 This is a perspective view of the sleeve and guide rod of this utility model. In the figure: 1. Lower shell; 2. Upper shell; 3. Button mounting plate; 4. Buckle; 5. Sleeve; 6. Insert sleeve; 7. Positioning block; 8. Limiting plate; 9. Guide rod; 10. Conical cylinder; 11. Telescopic spring; 12. Rubber sealing cap. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figures 1 to 4 The screwless car key housing structure in this embodiment includes a lower housing 1, an upper housing 2 on the lower housing 1, and a button mounting plate 3 on the upper housing 2. The lower housing 1 and the upper housing 2 are snapped together, and the button mounting plate 3 is installed inside the upper housing 2.

[0020] Example 1: Please refer to Figures 1 to 4 In this embodiment, a sleeve 5 is fixedly installed inside the upper shell 2, and a plug-in tube 6 is fixedly installed inside the lower shell 1. Four positioning blocks 7 for fixing the sleeve 5 are slidably installed inside the plug-in tube 6. The plug-in tube 6 and the lower shell 1 are integral injection molded structures. Four rectangular slots adapted to the positioning blocks 7 are opened on the plug-in tube 6. The positioning blocks 7 are trapezoidal, which facilitates the use of the positioning blocks 7 to pass through the rectangular slots and insert into the interior of the sleeve 5, thereby completing the connection and fixation of the sleeve 5 and the plug-in tube 6. A limiting plate 8 located inside the plug-in tube 6 is fixedly installed on each of the four positioning blocks 7. A guide rod 9 with one end passing through and extending to the outside is fixedly installed inside the sleeve 5. A conical tube 10 is inserted into the interior of the plug-in tube 6. A telescopic spring 11 is fixedly connected to one end of the conical tube 10. A round hole adapted to the guide rod 9 is opened at the smaller diameter end of the conical tube 10. One end of the guide rod 9 passes through the telescopic spring 11 and extends into the interior of the round hole, which facilitates the sliding of the conical tube 10 on the outer surface of the guide rod 9 and pushes the telescopic spring 11.

[0021] Among them, the sleeve 5 and the upper shell 2 are integral injection molded structures. The sleeve 5 is provided with four positioning grooves. One end of the positioning block 7 passes through and extends into the positioning groove, so that the positioning block 7 can be inserted into the positioning groove on the sleeve 5, thereby locking the position of the positioning block 7.

[0022] By adopting the above technical solution, the insert cylinder 6 is inserted into the sleeve 5 and the upper and lower shells 1 and 2 are joined together. Then, the conical cylinder 10 is inserted into the insert cylinder 6 and sleeved on the outer surface of the guide rod 9, thereby pushing the telescopic spring 11 to the innermost part of the sleeve 5 and squeezing the four limiting plates 8, so that the four limiting plates 8 move to opposite sides, thereby allowing the positioning block 7 on the limiting plate 8 to penetrate into the positioning groove inside the sleeve 5, thereby locking the positioning block 7 and fixing the conical cylinder 10, thus quickly assembling the lower shell 1 and the upper shell 2.

[0023] It should be noted that this screwless installation structure eliminates the need for screwdrivers or other tools to tighten screws, greatly simplifying the installation process of car key shells. Users only need to follow the snap-fit ​​steps described above to simply assemble the upper and lower shells to complete the installation, saving installation time and effort. Whether it's ordinary consumers replacing key shells themselves or car parts manufacturers assembling them, it can improve work efficiency.

[0024] Example 2: Please refer to Figures 1 to 4 In this embodiment, both the lower shell 1 and the upper shell 2 are fixedly installed with buckles 4, and one end of the sleeve 5 is installed with a rubber sealing cap 12 for sealing. The buckle 4 includes two plastic pieces, and a boss is fixedly installed on the opposite side of the two plastic pieces. There are eight buckles 4, which facilitates the use of buckles 4 to reinforce the connection between the lower shell 1 and the upper shell 2, and uses the rubber sealing cap 12 to seal one end of the sleeve 5.

[0025] It should be noted that the installation process is simple and does not require professional installation skills and tools, reducing the requirements for operators. Even people without mechanical installation experience can easily complete the task. Furthermore, the rubber sealing cover 12 can effectively prevent external impurities such as dust, moisture, and humidity from entering the key shell. This is crucial for the protection of precision electronic devices such as car keys, reducing the probability of key circuit short circuits, button malfunctions, and other failures caused by impurities, and improving the key's lifespan and reliability.

[0026] By adopting the above technical solution, one end of the plug-in cylinder 6 can be sealed by the rubber sealing cap 12, thereby quickly completing the assembly of the lower shell 1 and the upper shell 2. Even if some of the buckles 4 are damaged due to falling, the lower shell 1 and the upper shell 2 can still be stably connected.

[0027] The working principle of the above embodiments is as follows:

[0028] This screwless car key housing structure, during assembly, involves inserting the connector 6 into the sleeve 5 and joining the upper and lower housings 1 and 2. Then, the conical cylinder 10 is inserted into the connector 6 and fitted onto the outer surface of the guide rod 9, thereby pushing the telescopic spring 11 to the innermost part of the sleeve 5 and compressing the four limiting plates 8. This causes the four limiting plates 8 to move to opposite sides, allowing the positioning blocks 7 on the limiting plates 8 to penetrate into the positioning grooves inside the sleeve 5, thus locking the positioning blocks 7 and fixing the conical cylinder 10. Subsequently, a rubber sealing cap 12 is used to seal one end of the connector 6, thereby quickly completing the assembly of the lower housing 1 and the upper housing 2. Even if some of the clips 4 are damaged due to a fall, the lower housing 1 and the upper housing 2 can still be stably connected.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A screwless mounting automobile key case structure comprising a lower case (1), characterized in that: The lower shell (1) is provided with an upper shell (2), and the upper shell (2) is provided with a key mounting plate (3); The inner part of the upper shell (2) is fixedly provided with a sleeve (5), the inner part of the lower shell (1) is fixedly provided with a plug-in barrel (6), the inner part of the plug-in barrel (6) is slidably provided with four positioning blocks (7) for fixing the sleeve (5), the four positioning blocks (7) are all fixedly provided with limiting plates (8) in the inner part of the plug-in barrel (6), the inner part of the sleeve (5) is fixedly provided with a guide rod (9) with one end penetrating through and extending to the outside of the sleeve (5), the plug-in barrel (6) is plugged with a conical barrel (10), and one end of the conical barrel (10) is fixedly connected with an elastic spring (11).

2. The screwless mounting automobile key case structure according to claim 1, characterized in that: The lower shell (1) and the upper shell (2) are both fixedly provided with buckles (4), and one end of the sleeve (5) is provided with a rubber sealing cover (12) for sealing.

3. The screwless mounting automobile key case structure according to claim 1, characterized in that: The lower shell (1) and the upper shell (2) are clamped, and the key mounting plate (3) is mounted in the inner part of the upper shell (2).

4. The screwless mounting automobile key case structure according to claim 1, characterized in that: The plug-in barrel (6) is an integral injection molding structure with the lower shell (1), four rectangular grooves adapted to the positioning blocks (7) are formed in the plug-in barrel (6), and the positioning blocks (7) are trapezoidal.

5. The screwless mounting automobile key case structure according to claim 1, characterized in that: The sleeve (5) is an integral injection molding structure with the upper shell (2), four positioning grooves are formed in the sleeve (5), and one end of the positioning block (7) penetrates through and extends to the positioning groove.

6. The screwless mounting automobile key case structure according to claim 1, characterized in that: The smaller diameter end of the conical barrel (10) is provided with a circular hole adapted to the guide rod (9), and one end of the guide rod (9) penetrates through the elastic spring (11) and extends to the inside of the circular hole.

7. The key fob structure of claim 2, wherein: The buckle (4) comprises two plastic sheets, and the opposite sides of the two plastic sheets are both fixedly provided with bosses, and the number of the buckles (4) is eight.

Images