Multi-stage clamping limiting structure suitable for devices with different specifications and lengths
Through the multi-stage engagement limit structure, the tilt engagement elastic arms and locally raised protruding snaps are used to solve the problem that components are difficult to fix and the snap design is easily deformed in the prior art, and the components are difficult to fix at different specifications and lengths, realizing the problem of the problem of the problem of the problem of being difficult to fix and the snap design in different specifications and lengths, thus achieving the Stable connection and high retention force of components in X, Y, and Z directions.
Patent Information
- Application Number
- CN202420927595.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-30
AI Technical Summary
When fixing components of different specifications and lengths, it is difficult to maintain fixed in the X, Y, and Z directions, resulting in the components being disengaged or displaced during impact, and conventional snap designs are easily caused during the loading process. Plastic deformation or breakage.
Adopt a multi-stage engaging limit structure, including a shell, a head positioner, a multi-stage engaging assembly and a tail positioner. The engaging assembly consists of multiple pairs of engaging elastic arms, and a locally raised protruding buckle is installed on the inner wall. The engaging elastic arm is inclined inward, and is combined with the 'U' ring rib and baffle to achieve the full limit and high retention force of the device.
It realizes reliable limit and high retention force of components of different specifications and lengths in the X, Y, and Z directions, reduces plastic deformation during the loading process, improves resistance to external shocks, and is simple to manufacture and low cost. High compatibility.
Smart Images
Figure CN222263281U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electronic component fixing, in particular to a multi-stage clamping limiting structure suitable for components of different specifications and lengths. Background Art
[0002] In some automotive electronic products, some larger components (such as columnar capacitors, rectangular batteries, etc.) need to be fixed by snap-fit structures such as buckles, and they need to be reliably limited in the X, Y, and Z directions to withstand impacts in all directions without displacement. For example, patent application CN108461282A discloses a connector module for connecting an energy storage device to a printed circuit board, which can be used to accommodate two capacitors.
[0003] However, in the actual implementation of snap-fitting capacitors, batteries and other components, the following problems usually occur:
[0004] 1. When the engagement amount of the buckle is too small, the holding force on the components in the Z direction is insufficient, which may cause the components to slip out of the buckle when impacted, resulting in electrical connection failure due to displacement of the components in the Z direction; and when the engagement amount of the buckle is too large, when the components are installed, the buckle will be over-stretched and plastic deformation or even buckle breakage will occur, resulting in assembly failure.
[0005] 2. For cylindrical capacitors or rectangular batteries, there are usually different standard lengths. Therefore, conventional buckle structures cannot be compatible with these standard length components at the same time so that they can all be fixed in the length direction (i.e., X direction). As a result, it is impossible to use the same buckle structure to fix components of different lengths in the length direction (i.e., X direction), that is, it is impossible to make them all withstand the impact in the X direction and remain fixed, which causes the components to be displaced in the X direction and electrical connection failure. Summary of the invention
[0006] The purpose of the utility model is to overcome the defects of the prior art and provide a multi-stage clamping limit structure with reliable limit and high holding force, which is suitable for devices of different specifications and lengths.
[0007] The purpose of the utility model can be achieved through the following technical solutions:
[0008] A multi-stage clamping limit structure suitable for devices of different specifications and lengths, comprising a shell and a head positioning member, a multi-stage clamping assembly and a tail positioning member sequentially distributed in the shell, wherein the multi-stage clamping assembly comprises at least two pairs of clamping elastic arms, each single clamping elastic arm of each pair of clamping elastic arms is inclined inwardly, and each single clamping elastic arm is provided with a local protruding profiling buckle on the inner side wall.
[0009] The head positioning member and the tail positioning member are used to realize the positioning of the device in the X direction, and the multi-stage clamping assembly is used to realize the combined positioning of the device in the X, Y and Z directions or the combined positioning of the device in the Y and Z directions.
[0010] Furthermore, the head positioning member is a "U"-shaped annular rib.
[0011] Furthermore, the "U"-shaped annular rib includes a "U"-shaped positioning rib for cooperating with the device for installation and a "U"-shaped baffle for limiting the device in the X direction, the "U"-shaped positioning rib is connected to the "U"-shaped baffle, and the "U"-shaped positioning rib is arranged close to the multi-stage clamping assembly.
[0012] Furthermore, the "U"-shaped positioning rib and the "U"-shaped baffle are integrally formed.
[0013] Furthermore, the head positioning member is a head baffle.
[0014] Furthermore, the tail positioning member is a tail baffle.
[0015] Furthermore, among the at least two pairs of engaging elastic arms, the width of the pair of engaging elastic arms close to the head positioning member is greater than the width of the other engaging elastic arms.
[0016] Furthermore, when the engaging elastic arm is inclined inwardly, compared with the vertical direction, the inclination angle of the inner side surface of the engaging elastic arm is smaller than the inclination angle of the outer side surface of the engaging elastic arm.
[0017] Furthermore, compared with the vertical direction, the inclination angle of the inner side surface of the engaging elastic arm is 2-4°, and the inclination angle of the outer side surface of the engaging elastic arm is 4.5-6.5°.
[0018] Furthermore, a plurality of bottom support members are arranged in the shell.
[0019] Compared with the prior art, the utility model has the following beneficial effects:
[0020] (1) Comprehensive and reliable limiting: The multi-stage clamping limiting structure of the utility model is provided with a multi-stage clamping assembly, which includes a plurality of pairs of clamping elastic arms and locally raised contoured buckles arranged on the inner side of the clamping elastic arms. For components of different standard length specifications, comprehensive and reliable limiting in the X, Y and Z directions can be achieved to avoid movement of the components when they are impacted, thereby ensuring reliable connection.
[0021] (2) High holding force: The elastic arm of the multi-stage snap-fit limit structure of the utility model adopts a design different from that of conventional snaps. A locally raised contoured snap is provided, and an inwardly inclined setting is adopted. This can effectively reduce the plastic deformation caused by the assembly process and provide a higher holding force based on the same amount of snap fit, and can resist higher external impacts without loosening.
[0022] (3) Low cost and simple manufacturing: The multi-stage locking limit structure of the utility model can be completed by a conventional injection mold structure inclined top structure, without the need for additional complex mold structure or special processing technology, and is simple to manufacture and low in cost.
[0023] (4) High manufacturing reliability: The buckle structure on the snap-fit elastic arm of the utility model adopts a local protruding imitation structure, which can avoid the injection molding defects (shrinkage, deformation, etc.) caused by the overall protrusion of the conventional buckle, and its imitation structure can also better mesh with the shape of the component.
[0024] (5) Flexible use and high compatibility: The multi-level locking limit structure of the utility model can be compatible with the fixation of components of various specifications and standard lengths, and has extremely high compatibility; there is no need to develop multiple shells because of the storage of components of various specifications and lengths, which minimizes the types of shells, saves costs, and is very flexible to use. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 This is a schematic diagram of the functional structures of the multi-stage locking and limiting structure in the embodiment of the utility model;
[0026] Figure 2 A schematic diagram of the columnar capacitor installation process in the embodiment;
[0027] Figure 3 A schematic diagram of a block battery loading process in an embodiment;
[0028] Figure 4 This is a schematic diagram of a large-size columnar capacitor installed in an embodiment;
[0029] Figure 5 This is a schematic diagram of a medium-sized columnar capacitor installed in the embodiment;
[0030] Figure 6 This is a schematic diagram of a small-size columnar capacitor installed in an embodiment;
[0031] Figure 7 This is a schematic diagram of a large-sized rectangular battery after being installed in the embodiment;
[0032] Figure 8 This is a schematic diagram of a medium-sized rectangular battery after installation in the embodiment;
[0033] Fig. 9This is a schematic diagram of a small-sized rectangular battery installed in the embodiment;
[0034] Fig.10 It is a plan view of the multi-stage locking and limiting structure in the embodiment;
[0035] Fig.11 is a cross-sectional view of the elastic arm structure;
[0036] In the figure, 1, 3-multi-stage locking limit structure, 1a-"U" annular rib, 1a1-"U" shaped baffle, 1a2-"U" shaped positioning rib, 1b-first-level locking elastic arm, 1b1, 1c1, 1d1-local raised contoured buckle, 1c-second-level locking elastic arm, 1d-third-level locking elastic arm, 1e-tail baffle, 2, 2a, 2b, 2c-columnar capacitor, 3a-head baffle, 4, 4a, 4b, 4c-rectangular battery. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0039] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0040] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0041] In order to conveniently and reliably fix and limit the electronic device in the X, Y and Z directions, the utility model provides a multi-stage clamping and limiting structure suitable for devices of different specifications and lengths, comprising a shell and a head positioning member, a multi-stage clamping assembly and a tail positioning member sequentially distributed in the shell, the multi-stage clamping assembly comprising at least two pairs of clamping elastic arms, each single clamping elastic arm of each pair of clamping elastic arms is tilted inwardly, and a local protruding profiling buckle is arranged on the inner side wall of each single clamping elastic arm, wherein the head positioning member and the tail positioning member are used to limit the device in the X direction, and the multi-stage clamping assembly is used to realize the combined limiting of the device in the X, Y and Z directions or the combined limiting of the device in the Y and Z directions.
[0042] Example 1
[0043] This embodiment provides a multi-stage locking and limiting structure 1 suitable for columnar electronic devices of different specifications and lengths, such as Figure 1 As shown, it includes a shell and a head positioning member, a multi-stage clamping assembly and a tail positioning member distributed in the shell in sequence, the head positioning member is a "U"-shaped annular rib 1a, the multi-stage clamping assembly includes three pairs of clamping elastic arms, namely a primary clamping elastic arm 1b, a secondary clamping elastic arm 1c and a tertiary clamping elastic arm 1d, each level of the clamping elastic arm is respectively provided with a local protruding profiling buckle 1b1, a local protruding profiling buckle 1c1 and a local protruding profiling buckle 1d1, and the tail positioning member is a tail baffle 1e.
[0044] In this embodiment, the columnar electronic device can be a columnar capacitor 2, and the columnar capacitor 2 can be installed into the multi-stage locking limit structure 1 by pressing down. Figure 2 As shown. Figure 2 When the columnar capacitor 2 is pressed down in the insertion direction, it contacts with the engaging elastic arms 1b, 1c, and 1d and overcomes the clamping force of the elastic arms. The engaging elastic arms 1b, 1c, and 1d will expand outward accordingly. After being inserted into place, the elastic arms will rebound and partially reset accordingly, and will generate and apply radial clamping force to the pressed columnar capacitor 2, thereby fixing the clamped object in the Z direction. The engaging elastic arms as a whole have a fixing effect in the Y direction.
[0045] like Figure 4 As shown, the "U"-shaped annular rib 1a includes a "U"-shaped positioning rib 1a2 and a "U"-shaped baffle 1a1 connected to each other, the "U"-shaped positioning rib is connected to the "U"-shaped baffle, and the "U"-shaped positioning rib is arranged close to the multi-stage clamping assembly. The "U"-shaped baffle 1a1 is used to ensure that the columnar capacitor does not move in the X+ direction when it is impacted, and the "U"-shaped positioning rib 1a2 is used to cooperate with the neck of the columnar capacitor to play a role in installation and positioning.
[0046] like Figure 4 , 5As shown in Figures 6 and 7, the multi-stage locking limit structure of this embodiment can realize the reliable positioning of columnar capacitors of different lengths through the multi-stage locking components.
[0047] like Figure 4 As shown, when the large-size columnar capacitor 2a is installed in the multi-stage clamping limiting structure 1, the "U"-shaped baffle 1a1 will limit the displacement of the capacitor 2a in the X+ direction; the tail baffle 1e will limit its displacement in the X- direction, so that the capacitor 2a can withstand impact in the X direction without moving, thereby ensuring reliable electrical connection; at the same time, the first, second, and third-stage clamping elastic arms 1b, 1c, 1d and the local raised contoured buckles 1b1, 1c1, 1d1 thereon will all generate radial clamping forces on the columnar capacitor 2a, thereby ensuring its stability in the Y and Z directions, and being able to withstand impact without moving, thereby ensuring the reliability of the electrical connection.
[0048] like Figure 5 As shown, when the medium-sized capacitor 2b is installed in the multi-stage clamping limiting structure 1, the "U"-shaped baffle 1a1 will limit the displacement of the capacitor 2b in the X+ direction; the three-stage clamping elastic arm 1d can accommodate the capacitor without deformation, and the local protruding profile buckle 1d1 thereon will match the tail of the capacitor 2b, and will limit its displacement in the X- direction, so that the capacitor 2b can withstand impact in the X direction without moving, ensuring reliable electrical connection. At the same time, the first and second stage clamping elastic arms 1b, 1c and the local protruding profile buckles 1b1, 1c1 thereon will all generate radial clamping force on the columnar capacitor 2b, providing sufficient holding force for the light medium-sized capacitor 2b, ensuring that it can withstand impact in the Z direction without moving, ensuring reliable electrical connection.
[0049] like Figure 6 As shown, when the small-sized capacitor 2c is loaded into the multi-stage clamping limiting structure 1, the "U"-shaped baffle 1a1 will limit the displacement of the capacitor 2c in the X+ direction; the secondary clamping elastic arm 1c can accommodate the capacitor without deformation, and the local protruding profile buckle 1c1 thereon will match the tail of the capacitor 2c, and limit its displacement in the X- direction, so that the capacitor 2c can withstand impact in the X direction without moving, ensuring a reliable electrical connection. At the same time, only the primary clamping elastic arm 1b and the local protruding profile buckle 1b1 thereon will generate a radial clamping force on the columnar capacitor 2c, which can provide sufficient holding force for the lightest small-sized capacitor 2c, ensuring that it can withstand impact in the Z direction without moving, ensuring a reliable electrical connection.
[0050] The local protrusions on the above-mentioned elastic arms can define the protrusion positions according to the different standard lengths of the accommodated components. In particular, the buckle structure on the elastic arms adopts a local protrusion profiling structure, which not only has the function of limiting the components of different lengths as described above, but also can avoid the injection defects (shrinkage, deformation, etc.) caused by the overall protrusion of the conventional buckle, and its profiling structure can also better mesh with the shape of the component.
[0051] like Fig.10 , Fig.11 As shown, unlike the vertical setting of the conventional snap-fit elastic arms, the snap-fit elastic arms 1b, 1c, and 1d of the present embodiment are inclined inward at a certain angle. The snap-fit elastic arms 1b, 1c, and 1d and their local protruding contoured snaps form an inward-tilted and tightly clamped effect on the supported object. Under the condition of the same clamping amount, the holding force is greatly improved, making it more difficult for the clamped object to slip out in the Z direction; at the same time, when the snap-fit elastic arms are inclined inward, compared with the vertical direction, the inclination angle of the inner side surface of the snap-fit elastic arm is smaller than the inclination angle of the outer side surface of the snap-fit elastic arm. The smaller inclination angle of the inner side surface of the elastic arm compared with the outer side surface also forms an effect in which the root of the elastic arm is thicker and the end is thinner. While ensuring that the elastic arm can provide sufficient elastic force, the plastic deformation of the elastic arm caused by the device during the pressing process is greatly reduced, thereby ensuring the effective clamping amount, thereby improving the holding effect in the Z direction after the device is assembled in place.
[0052] When the engaging elastic arm is tilted inward, the tilt angle of the inner side surface of the engaging elastic arm is 2 to 4 degrees, and the tilt angle of the outer side surface is 4.5 to 6.5 degrees compared to the vertical direction. In this embodiment, the inner side surface is tilted 3 degrees, and the outer side surface is tilted 5.5 degrees, that is, the angle between the inner side surface and the bottom of the shell is 87 degrees, and the angle between the outer side surface and the bottom of the shell is 95.5 degrees.
[0053] In a preferred embodiment, among the multiple pairs of snap-fit elastic arms, the width of the pair of snap-fit elastic arms close to the head positioning member is greater than the width of the other snap-fit elastic arms, so as to facilitate the installation of components of different regular sizes. In addition, the snap-fit elastic arms with larger width can also be provided with multiple local protruding contour buckles as required.
[0054] In other embodiments, the above-mentioned multi-stage locking and limiting structure can be used as a separate module, or can be integrated into a product structure to fix corresponding components.
[0055] Example 2
[0056] This embodiment provides a multi-stage locking and limiting structure 3 suitable for rectangular electronic devices of different specifications and lengths, such as Figure 3As shown, different from the first embodiment, the head positioning member of the present embodiment is a head baffle 3a, and the multi-stage locking limiting structure 3 can be installed by pressing down the rectangular battery 4.
[0057] like Figure 7 , 8 As shown in Figures 9 and 9, for rectangular batteries 4 of different standard sizes, a multi-stage snap-fit limiting structure 3, i.e., a head baffle, a tail baffle, a plurality of pairs of snap-fit elastic arms and their local raised contoured buckles, can be used to enable them to withstand impacts in the X, Y, and Z directions without displacement, thereby ensuring reliable electrical connection.
[0058] In other embodiments, if it is necessary to be compatible with more columnar capacitors or rectangular batteries of different standard sizes, this multi-stage locking limit structure can also be provided with more stages of locking elastic arms, such as four stages, five stages, etc.
[0059] In other embodiments, the above-mentioned multi-stage locking and limiting structure can be manufactured easily by means of a conventional injection mold structure with a sloping top structure.
[0060] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. A multi-stage locking and limiting structure suitable for devices of different specifications and lengths, characterized in that: The invention comprises a shell and a head positioning member, a multi-stage clamping assembly and a tail positioning member which are sequentially distributed in the shell. The multi-stage clamping assembly comprises at least two pairs of clamping elastic arms. Each single clamping elastic arm of each pair of clamping elastic arms is tilted inwardly. A local protruding profiling buckle is arranged on the inner side wall of each single clamping elastic arm. The head positioning member and the tail positioning member are used to realize the positioning of the device in the X direction, and the multi-stage clamping assembly is used to realize the combined positioning of the device in the X, Y and Z directions or the combined positioning of the device in the Y and Z directions.
2. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 1 is characterized in that: The head positioning member is a "U"-shaped annular rib.
3. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 2 is characterized in that: The "U"-shaped annular rib includes a "U"-shaped positioning rib for cooperating with the device for installation and a "U"-shaped baffle for limiting the device in the X direction. The "U"-shaped positioning rib is connected to the "U"-shaped baffle, and the "U"-shaped positioning rib is arranged close to the multi-stage clamping assembly.
4. The multi-stage locking and limiting structure applicable to devices of different lengths according to claim 3 is characterized in that: The "U"-shaped positioning rib and the "U"-shaped baffle are integrally formed.
5. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 1, characterized in that: The head positioning member is a head baffle.
6. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 1, characterized in that: The tail positioning piece is a tail baffle.
7. The multi-stage locking and limiting structure applicable to devices of different lengths according to claim 1, characterized in that: Among the at least two pairs of engaging elastic arms, the width of the pair of engaging elastic arms close to the head positioning member is greater than the width of the other engaging elastic arms.
8. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 1, characterized in that: When the engaging elastic arm is arranged to be inclined inward, compared with the vertical direction, the inclination angle of the inner side surface of the engaging elastic arm is smaller than the inclination angle of the outer side surface of the engaging elastic arm.
9. The multi-stage locking and limiting structure applicable to devices of different lengths according to claim 8, characterized in that: Compared with the vertical direction, the inclination angle of the inner side surface of the engaging elastic arm is 2-4°, and the inclination angle of the outer side surface of the engaging elastic arm is 4.5-6.5°.
10. The multi-stage locking and limiting structure applicable to devices of different specifications and lengths according to claim 1, characterized in that: A plurality of bottom supporting members are also arranged in the shell.