Backrest button limiting structure and switch assembly

Abstract

The utility model relates to the technical field of seat adjusting switches, in particular to a backrest button limiting structure and a switch assembly, and the key point of the technical scheme is that the backrest button limiting structure comprises a button body with a first convex part on the inner side; the buckle is arranged on the button body; the shell is movably connected with the buckle and provided with a second protruding part, and the second protruding part and the first protruding part abut against each other for limiting in the vertical direction. According to the automobile seat adjusting switch, vertical shaking of the backrest button can be limited, and the using hand feeling of the automobile seat adjusting switch is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the technical field of seat adjustment switches, and in particular to a backrest button limiting structure and switch assembly. Background Technology

[0002] Backrest adjustment function has been widely used in electrically adjustable seats. It is mainly achieved through seat adjustment switch. Specifically, by tossing the backrest button, the backrest angle can be automatically adjusted under electronic control. Compared with the traditional manual adjustment method, using seat adjustment switch to adjust the backrest has the advantages of being more sensitive and convenient, and it will have a wide range of applications in the future.

[0003] Currently, conventional seat adjustment switches are mounted on one side of the bottom of the seat. They mainly consist of a housing, a switch module, and a backrest button. The switch module and backrest button are respectively mounted on the housing, and the backrest button is connected to the switch module, allowing it to move within the housing. Specifically, the backrest button typically includes a button body and a latch. The button body has an elongated profile, and the latch is connected to one end of the button body. The latch is mounted to the housing and acts as a pivot. By moving the other end of the button body, the button body can swing around the latch as a rotation axis, thereby triggering the switch module.

[0004] However, current backrest buttons still have certain limitations in terms of assembly. For example, conventional backrest buttons inevitably float along the vertical direction during use. On the one hand, this causes the backrest button to wobble during operation, interfering with the tactile feedback. On the other hand, over time, this can also lead to mechanical fatigue at the connection between the buckle and the backrest button, posing a risk of cracking or breakage.

[0005] Therefore, improvements to existing technologies are necessary.

[0006] The above information is provided as background information only to aid in understanding this disclosure and does not constitute an assertion or admission that any of the above content can be used as prior art relative to this disclosure. Utility Model Content

[0007] This utility model provides a backrest button limiting structure and switch assembly to solve the problem of backrest buttons easily wobbling vertically in the prior art.

[0008] To achieve the above objectives, firstly, this utility model provides a backrest button limiting structure using the following technical solution:

[0009] A backrest button limiting structure includes:

[0010] The button body has a first protrusion on its inner side;

[0011] A latch is provided on the button body;

[0012] The outer shell is movably connected to the buckle and is provided with a second protrusion, which abuts against and limits the first protrusion in the vertical direction.

[0013] Preferably, the gap between the first protrusion and the second protrusion is D, and the value of gap D ranges from 0.05mm to 0.1mm.

[0014] Preferably, the button body is provided with a third protrusion and a fourth protrusion, the third protrusion and the fourth protrusion are located on the inner side of the button body, and the third protrusion and the fourth protrusion respectively abut against the opposite sides of the second protrusion to limit the rotation angle of the button body.

[0015] Preferably, the rotation angle of the button body is 5.5°-8.5°.

[0016] Preferably, the third protrusion and the fourth protrusion are in the shape of ribs.

[0017] Preferably, the first protrusion is in the shape of a rib, and both ends of the first protrusion are connected to the third protrusion and the fourth protrusion, respectively.

[0018] Preferably, the top of the second protrusion has an abutting plane, and the second protrusion abuts and limits the first protrusion through the abutting plane.

[0019] Preferably, the second protrusion includes:

[0020] The frustum portion is connected to the outer casing;

[0021] And a rod portion, disposed at the top of the frustum portion, for abutting and limiting the first protrusion;

[0022] The frustum portion and the rod portion are hollow.

[0023] Preferably, the outer casing is provided with:

[0024] A hollow column having an insertion / removal channel, wherein the buckle engages with the insertion / removal channel;

[0025] And an elastic fastener, which is disposed adjacent to the opening of the insertion channel and engages with the snap fastener.

[0026] The buckle is also provided with reinforcing ribs, and the two ends of the reinforcing ribs are respectively connected to the hollow column and the second protrusion.

[0027] Secondly, this utility model provides a switch assembly with the following technical solution:

[0028] A switch assembly including the backrest button limiting structure described above.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The backrest button limiting structure and switch assembly provided by this utility model provide vertical movement restriction for the button body by setting a first protrusion and a second protrusion between the button body and the outer shell. Under the mutual abutting limiting effect between the first protrusion and the second protrusion, the button body is less likely to produce excessive vertical wobbling during operation and use, and the user can obtain a good feedback feel. The feel of the button body is optimized and improved, and the problem of the backrest button being prone to vertical wobbling is solved.

[0031] This invention has other features and advantages that will be apparent from or will be set forth in detail in the accompanying drawings and the following detailed description, which together serve to explain the particular principles of this invention. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the backrest button limiting structure provided in Embodiment 1 of this utility model;

[0034] Figure 2 This is a schematic diagram of the button body provided in Embodiment 1 of this utility model;

[0035] Figure 3 This is a structural schematic diagram of the button body from another perspective provided in Embodiment 1 of this utility model;

[0036] Figure 4 This is a cross-sectional view of the backrest button limiting structure provided in Embodiment 1 of this utility model;

[0037] Figure 5 This is a schematic diagram of the switch assembly provided in Embodiment 2 of this utility model.

[0038] Figure label:

[0039] 1. Button body; 11. First protrusion; 12. Third protrusion; 13. Fourth protrusion; 2. Buckle; 21. Column part; 22. Snap-fit ​​part; 3. Outer shell; 31. Second protrusion; 32. Abutting surface; 4. Hollow column; 41. Insertion and removal channel; 5. Elastic fastener; 6. Reinforcing rib; 7. Switch module. Detailed Implementation

[0040] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of this utility model, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component that is centrally positioned therein. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be a component that is centrally positioned therein.

[0042] Furthermore, terms such as "long," "short," "inner," and "outer" indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the convenience of describing this utility model and do not indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of this utility model.

[0043] The following is in conjunction with the appendix Figure 1-5 The technical solution of this utility model will be further illustrated through specific implementation methods.

[0044] Example 1:

[0045] Please refer to Figure 1 and Figure 2 This utility model embodiment provides a backrest button limiting structure, including a button body 1, a buckle 2, and a shell 3.

[0046] Among them, the button body 1 is a backrest button, which has a shell structure. One side of the surface has an outwardly protruding arc contour, which is the outer side; the other side has an inwardly concave arc structure, which is the inner side. The button body 1 as a whole has a long and narrow structure.

[0047] At this time, the latch 2 is located on the button body 1. The latch 2 is usually rod-shaped, with one end connected to the button body 1. The latch 2 is perpendicular to the button body 1 and located at one end of the button body 1. At this time, the button body 1 and the latch 2 form an L-shaped outline. The extension direction of the latch 2 can also be understood as the vertical direction of the button body 1, which is referred to as the vertical direction here. When the button body 1 is installed, it is also pressed into the housing 3 along the vertical direction. At the same time, the housing 3 is movably connected to the latch 2, and the button body 1 can rotate left and right around the latch 2 as the rotation axis to trigger the switch.

[0048] Reference Figure 3 To prevent vertical wobbling of the button body 1, a first protrusion 11 is provided on the inner side of the button body 1. Typically, the first protrusion 11 is integrally connected to the button body 1; see back. Figure 1 A second protrusion 31 is provided on the outer side of the outer shell 3. Typically, the second protrusion 31 is integrally connected with the outer shell 3, and the second protrusion 31 and the first protrusion 11 abut against each other and limit each other in the vertical direction.

[0049] With the above-mentioned configuration, if the user presses the button body 1 vertically, the vertical displacement of the button body 1 can be limited by the abutting and limiting action between the first protrusion 11 and the second protrusion 31, thereby reducing its shaking and making the button body 1 less susceptible to feedback caused by shaking during operation, thus improving the user experience.

[0050] Furthermore, the size of the gap between the first protrusion 11 and the second protrusion 31 affects the limiting effect. Here, the gap between the first protrusion 11 and the second protrusion 31 is defined as D, and the range of the gap D is set to 0.05mm-0.1mm.

[0051] It is understandable that the buckle 2 needs to be assembled into the housing 3 by pressing. When the gap D between the first protrusion 11 and the second protrusion 31 is less than 0.05mm, the button body 1 may be flipped over by the first protrusion 11 and the second protrusion 31 during the pressing assembly of the buckle 2, causing the button body 1 to deform. When the gap D between the first protrusion 11 and the second protrusion 31 is greater than 0.1mm, the gap D is too large, which will cause the vertical limiting effect to fail. Therefore, by controlling the value of the gap D between 0.2mm and 0.4mm, the assembly space requirements of the button body 1 can be met, and the vertical limiting effect of the button body 1 can also be achieved.

[0052] For example, the specific value of the gap D can be 0.05mm, 0.06mm, 0.07mm, 0.08mm, 0.09mm, 0.1mm, etc. There is no limitation on the specific value of the gap D here. In another embodiment, the value range of the gap D can be selected between any two of the above parameter values.

[0053] Furthermore, referring to Figure 3 The button body 1 is provided with a third protrusion 12 and a fourth protrusion 13. Normally, the third protrusion 12 and the fourth protrusion 13 are integrally connected to the button body 1. The third protrusion 12 and the fourth protrusion 13 are located inside the button body 1, and the third protrusion 12 and the second protrusion 31 are located on opposite sides of the button body 1.

[0054] When the button is installed in the housing 3, the second protrusion 31 is located between the third protrusion 12 and the fourth protrusion 13. At this time, during the rotation of the button body 1, the third protrusion 12 and the fourth protrusion 13 can respectively abut against the opposite sides of the second protrusion 31 to limit the rotation angle of the button body 1, and prevent the button body 1 from exceeding the maximum displacement stroke of the switch module 7 (not shown in the figure) when rotating, so as to prevent damage to the switch module 7.

[0055] Experiments have shown that the third protrusion 12 and the fourth protrusion 13 limit the rotation angle of the button body 1 to the following range: 5.5°-8.5°, providing a good user experience. It is understandable that when the rotation angle of the button body 1 is less than 5.5°, the button's rotation angle may be too small, resulting in an indistinct pressing feel and insufficient feedback; while when the rotation angle is greater than 8.5°, the button body 1's rotation angle may be too large, exceeding the displacement stroke of the switch module 7, leading to damage to the switch module 7. Therefore, by limiting the rotation angle of the button body 1 to between 5.5° and 8.5°, the rotation angle of the button body 1 is moderate, providing both clear pressing feedback and preventing damage to the switch module 7, resulting in a good user experience.

[0056] For example, the rotation angle of the button body 1 can be 5.5°, 5.6°, 5.7°, 5.8°, 5.9°, 6.0°, 6.1°, 6.2°, 6.3°, 6.4°, 6.5°, 6.6°, 6.7°, 6.8°, 6.9°, 7.0°, 7.1°, 7.2°, 7.3°, 7.4°, 7.5°, 7.6°, 7.7°, 7.8°, 7.9°, 8.0°, 8.1°, 8.2°, 8.3°, 8.4°, or 8.5°. The specific parameters of the rotation angle can be adjusted according to the actual design requirements, and are not specifically limited here. In another embodiment, the rotation angle of the button body 1 can also be limited to any two of the above parameter values.

[0057] Furthermore, continue to refer to Figure 3, in the embodiments of the present application, the third convex portion 12 and the fourth convex portion 13 are in the shape of rib. Specifically, the third convex portion 12 and the fourth convex portion 13 have a "匚"-shaped contour. On the one hand, the third convex portion 12 and the fourth convex portion 13 in the shape of rib can play a role in abutting and limiting, meeting the requirements of the limiting function; on the other hand, the "匚"-shaped contour can enhance the structural strength of the button body 1, and the button body 1 is not easily deformed.

[0058] Meanwhile, in this embodiment, the first convex portion 11 is set in the shape of rib. Specifically, the first rib has a straight contour in this embodiment, and both ends of the first convex portion 11 are respectively connected to the third convex portion 12 and the fourth convex portion 13.

[0059] Through the above setting method, the first convex portion 11 has a flat edge structure, which can precisely abut and cooperate with the second convex portion 31, and the gap size between the first convex portion 11 and the second convex portion 31 is more stable; in addition, the first convex portion 11 can enhance the inner strength of the button body 1, and furthermore, the first convex portion 11 can also connect the forces of the third convex portion 12 and the fourth convex portion 13, and the self-strength of the button body 1 is further optimized and improved.

[0060] Looking back Figure 1 , in the embodiments of the present application, the top of the second convex portion 31 has an abutting plane 32, and the second convex portion 31 abuts and limits with the first convex portion 11 through the abutting plane 32. Based on this, by setting the abutting plane 32 on the second convex portion 31, the abutting plane 32 can maintain a good spacing distance from the second convex portion 31, and has a large coverage area, which can precisely abut and cooperate with the second convex portion 31, and continuously maintain the limiting effect on the button body 1.

[0061] Furthermore, the second convex portion 31 includes a frustum portion and a rod portion. The frustum portion is connected to the outer shell 3. Usually, the frustum portion is integrally connected to the outer shell 3; in addition, the rod portion is arranged at the top of the frustum portion and is used to abut and limit with the first convex portion 11. In this embodiment, the rod portion is vertically arranged, and its bottom end is integrally connected to the frustum portion, and the frustum portion and the rod portion are hollow and open inside the outer shell 3.

[0062] Based on the above settings, on the one hand, the frustum portion forms a conical base structure, which can increase the structural strength. In addition, by further configuring the rod portion on the frustum portion, it can avoid the swaying space of the button body 1 while increasing the strength, playing a role in making way and preventing structural interference, and will not affect the movement stroke of the button body ; on the other hand, the conical frustum portion and the overall hollow setting method are beneficial to the structure for demolding and facilitating the structure to be formed.

[0063] Referring to Figure 4To facilitate the easy assembly of the buckle 2 onto the outer shell 3, the outer shell 3 is provided with a hollow column 4 and an elastic fastener 5. The hollow column 4 has a cylindrical structure, with one end integrally connected to the outer surface of the outer shell 3. The hollow column 4 has an internal central hole and openings at both ends, forming an insertion and removal channel 41 inside the hollow column 4. The buckle 2 is inserted and removed into the insertion and removal channel 41.

[0064] Among them, combined Figure 2 In the solution provided in this embodiment, the buckle 2 includes a column portion 21 and a snap-fit ​​portion 22. One end of the column portion 21 is connected to the button body 1, and the snap-fit ​​portion 22 is located at the other end of the column portion 21. The outer periphery of the snap-fit ​​portion 22 protrudes from the column portion 21, thus forming a buckle 2 structure similar to a mushroom head.

[0065] Meanwhile, the elastic fastener 5 is disposed on the inner side of the housing 3. Typically, the elastic fastener 5 is integrally connected to the housing 3, and the elastic fastener 5 is disposed adjacent to the opening of the insertion channel 41. The elastic fastener 5 is used to engage with the snap-fit ​​portion 22 of the latch 2.

[0066] Optionally, the elastic fastener 5 can be a spring sheet structure or an elastic arm structure. Any shape that can achieve elastic fastening can be used. No specific structure of the elastic fastener 5 is limited here. Regardless of the specific structure of the elastic fastener 5, it should be included in the scope of this interpretation of the elastic fastener 5.

[0067] Based on the above settings, by inserting the buckle 2 into the insertion channel 41 until the buckle 2 engages with the elastic fastener 5 and the snap-fit ​​part 22 engages with the elastic fastener 5, the snap-fit ​​assembly between the buckle 2 and the outer shell 3 is achieved, and the button body 1 is finally fixedly installed. This process is quick and convenient, the assembly is efficient, and the assembly cost of the button body 1 is effectively reduced.

[0068] Optionally, multiple elastic fasteners 5 can be provided, such as two, four, or six. It is understood that the specific number of elastic fasteners 5 can be adjusted according to actual needs, and no specific limitation is made here. Based on this, multiple elastic fasteners 5 are arranged circumferentially along the opening of the insertion channel 41, and multiple elastic fasteners 5 form a bayonet in their natural state. The outline of the bayonet is smaller than the size outline of the snap-fit ​​part 22. By applying external force, the snap-fit ​​part 22 passes through the bayonet and is fastened to the end of the elastic fastener 5 to realize the snap-fit ​​process.

[0069] In the above-described embodiments, the multiple elastic fasteners 5 form an integral structure that can fasten and fix the snap-fit ​​part 22 in multiple directions, making the snap-fit ​​2 more stable and less prone to loosening during assembly.

[0070] In this embodiment, there are two elastic fasteners 5, which are arranged opposite to each other. The two elastic fasteners 5 are sufficient to provide basic snap-fit ​​stability, and they also have the advantages of convenient molding, easy demolding, and low molding cost.

[0071] Furthermore, referring to Figure 1 The buckle 2 is also provided with a reinforcing rib 6, the two ends of which are connected to the hollow column 4 and the second protrusion 31, respectively. In this embodiment, the reinforcing rib 6 has a straight rib structure and is integrally connected to the hollow column 4, the second protrusion 31 and the outer shell 3.

[0072] Here, since the outer shell 3 is usually an injection molded part, it may shrink during the cooling and molding process. During the shrinkage process, the relative positions of the hollow column 4 and the second protrusion 31 may shift, causing the limiting effect of the button body 1 to fail. Based on this, the reinforcing rib 6 not only strengthens the overall structure of the outer shell 3, but also provides a reinforcing force between the hollow column 4 and the second protrusion 31 to prevent excessive offset between the two, making the molding dimensions of the structure more accurate. In addition, it can further meet the needs of some users for strong operation, and the structure is not easily deformed.

[0073] The backrest button limiting structure provided in this embodiment has the following beneficial effects:

[0074] 1. Under the limiting effect of the first protrusion 11 and the second protrusion 31, the button body 1 can be provided with vertical movement restriction, making it difficult for the button body 1 to shake vertically during operation, and the user can obtain a good feedback feel.

[0075] 2. The third protrusion 12 and the fourth protrusion 13 can limit the swing stroke of the button body 1, and prevent damage to the switch module 7 while obtaining good tactile feedback.

[0076] 3. The overall structure of the button body 1 and the outer shell 3 is stable, strong, not easily deformed, and has high structural precision, which can effectively realize various functions.

[0077] Example 2:

[0078] Based on Embodiment 1, features not explained in this embodiment are explained using the methods described in Embodiment 1, and will not be repeated here. This embodiment provides a switch assembly using the following technical solution:

[0079] Reference Figure 5A switch assembly includes the backrest button limiting structure shown in Embodiment 1, and also includes a switch module 7. The switch module 7 includes components such as a circuit board, a slider, and a rocker switch. The switch module 7 is disposed at the housing 3 and connected to the button body 1. By moving the button body 1, the rocker switch can be triggered, thereby realizing the control function. The specific structure of the switch module 7 is prior art and will not be described in detail here.

[0080] Therefore, the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A backrest button limiting structure, characterized in that, include: The button body (1) has a first protrusion (11) on its inner side; A latch (2) is provided on the button body (1); The outer shell (3) is movably connected to the buckle (2) and is provided with a second protrusion (31), which abuts against and limits the first protrusion (11) in the vertical direction.

2. The backrest button limiting structure according to claim 1, characterized in that, The fitting clearance between the first protrusion (11) and the second protrusion (31) is D, and the value range of the fitting clearance D is 0.05mm-0.1mm.

3. The backrest button limiting structure according to claim 1, characterized in that, The button body (1) is provided with a third protrusion (12) and a fourth protrusion (13). The third protrusion (12) and the fourth protrusion (13) are located inside the button body (1). The third protrusion (12) and the fourth protrusion (13) respectively abut against the opposite sides of the second protrusion (31) to limit the rotation angle of the button body (1).

4. The backrest button limiting structure according to claim 3, characterized in that, The rotation angle of the button body (1) is 5.5°-8.5°.

5. The backrest button limiting structure according to claim 3, characterized in that, The third protrusion (12) and the fourth protrusion (13) are in the shape of ribs.

6. The backrest button limiting structure according to claim 3, characterized in that, The first protrusion (11) is in the shape of a rib, and the two ends of the first protrusion (11) are connected to the third protrusion (12) and the fourth protrusion (13) respectively.

7. The backrest button limiting structure according to claim 1, characterized in that, The second protrusion (31) has an abutting plane (32) at its top, and the second protrusion (31) abuts and limits the first protrusion (11) through the abutting plane (32).

8. The backrest button limiting structure according to claim 1, characterized in that, The second protrusion (31) includes: The frustum portion is connected to the outer shell (3); And the rod body portion, which is disposed at the top of the frustum portion, for abutting and limiting the first protrusion (11); The frustum portion and the rod portion are hollow.

9. The backrest button limiting structure according to claim 1, characterized in that, The outer casing (3) is provided with: Hollow column (4), the hollow column (4) has a plug-in channel (41), the buckle (2) is plugged in and plugged into the plug-in channel (41); And the elastic fastener (5) is disposed adjacent to the opening of the insertion channel (41) and is movably engaged with the buckle (2); The buckle (2) is also provided with a reinforcing rib (6), and the two ends of the reinforcing rib (6) are respectively connected to the hollow column (4) and the second protrusion (31).

10. A switch assembly, characterized in that, Includes the backrest button limiting structure as described in any one of claims 1-9.

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