Locking device and carrier having it

Abstract

This utility model relates to the field of latching technology, and discloses a latching device and a carrier having the same. The latching device includes a base plate, a bushing, and a base plate assembly. The base plate has a locking pin and a first mounting hole. The bushing is located within the first mounting hole, and an elastic separator is provided between the first mounting hole and the bushing. The bushing has a first through hole. The base plate assembly is located at the bottom of the base plate and has a second through hole. The first mounting hole, the first through hole, and the second through hole are coaxially arranged. The base plate assembly has a positioning protrusion at the second through hole, which extends into the first through hole. This utility model, by extending the positioning protrusion into the first through hole, provides a guiding function and exerts radial and axial restraint on the bushing, preventing the bushing from shifting due to assembly gaps or vibration. This achieves stable bushing installation and solves the problem in the prior art where unstable bushing installation leads to positional shifts and abnormal door lock function.

Description

Technical Field

[0001] This utility model relates to the field of locking technology, specifically to a locking device and a carrier having the same. Background Technology

[0002] The trunk of a car is used to store items. Cars are usually equipped with a tailgate for opening and closing the trunk, and a tailgate latch is installed on the crossbeam on the rear floor to lock the tailgate. A lock body is also installed on the tailgate.

[0003] In existing technology, bolts are typically used to connect and fix the tailgate latch base plate to the crossbeam on the rear floor. A bushing structure is generally provided between the holes and bolts on the tailgate latch base plate, and a base plate is also provided on the bottom surface of the base plate. The bushing and base plate are fixed by interference fit or screw connection. However, on the one hand, vehicle movement causes the crossbeam on the rear floor to be in a high-frequency vibration environment. The bushing will experience elastic decay due to fatigue, resulting in a decrease in interference fit and an increase in clearance. This causes the bushing to shift relative to the crossbeam on the rear floor, and the shift of the bushing will directly cause the tailgate latch to shift. On the other hand, the continuous vibration of the crossbeam on the rear floor during driving can cause the bolts connecting the bottom of the bushing to the base plate to gradually loosen. Loose bolts will cause the relative position of the bushing and the base plate to shift, which in turn causes the overall position of the tailgate latch to shift. The shift in the tailgate latch position will further lead to abnormal door lock function, and the tailgate will be unable to close properly. Utility Model Content

[0004] In view of this, the present invention provides a locking device and a carrier having the same, to solve the problem of unstable bushing installation leading to positional displacement in the prior art.

[0005] In a first aspect, the present invention provides a locking device, comprising: a base plate having a locking post and a first mounting hole; a bushing located within the first mounting hole, with an elastic separator between the first mounting hole and the bushing, and the bushing having a first through hole; and a base plate assembly located at the bottom of the base plate, the base plate assembly having a second through hole, the first mounting hole, the first through hole, and the second through hole being coaxially arranged, and the base plate assembly having a positioning protrusion at the second through hole, the positioning protrusion extending into the first through hole.

[0006] In this embodiment, a first mounting hole is provided on the substrate, and a bushing is placed in the first mounting hole. The first through hole of the bushing is used for bolts to pass through. An elastic separator is used to provide buffering and elastic pre-tightening between the substrate and the bushing, absorbing the impact of closing the door and the vibration of the vehicle. The base plate assembly has a second through hole. The first mounting hole, the first through hole and the second through hole are coaxially arranged, so that bolts can pass through the first through hole and the second through hole in sequence to connect and fix with the floor beam. A positioning protrusion is provided at the second through hole, and by extending the positioning protrusion into the first through hole, the positioning protrusion has a guiding function, which makes the assembly of the base plate assembly and the bushing simple. In addition, the positioning protrusion has radial and axial restraint forces on the bushing, preventing the bushing from shifting due to assembly gaps or vibrations, realizing the stability of bushing installation, and solving the problem of door lock malfunction caused by unstable bushing installation due to position shift in the prior art.

[0007] In one optional embodiment, the sidewall of the first through hole is provided with a stepped structure, the stepped structure extending through the surface of the bushing facing the base plate assembly, and a positioning protrusion is disposed within the stepped structure. This arrangement allows the positioning protrusion to engage with the stepped structure, restricting the displacement of the bushing in the horizontal and vertical directions. At the same time, the positioning protrusion serves as a guide and positioning function for the installation of the bushing, ensuring the positional stability of the bushing.

[0008] In one optional embodiment, the step structure includes a vertical step surface and a horizontal step surface. The vertical step surface mates with the outer peripheral surface of the positioning protrusion, and the horizontal step surface mates with the top of the positioning protrusion. The inner surface of the positioning protrusion is flush with the wall of the first through hole. The vertical and horizontal step surfaces mate with the positioning protrusion, achieving positioning with at least two contact surfaces, preventing bushing positional displacement, and ensuring bushing positional stability.

[0009] In one optional embodiment, the base plate assembly includes a base plate and positioning protrusions located on the base plate. Multiple first mounting holes are provided, each containing a bushing. Multiple positioning protrusions are also provided, each corresponding to one of the bushings. The multiple positioning protrusions are integrally formed with the base plate. By integrally forming a base plate with multiple positioning protrusions, the base plate serves as a reference during assembly. The multiple positioning protrusions are integrally formed based on this reference, and the one-to-one correspondence between the multiple positioning protrusions and bushings avoids the accumulation of errors from multiple references, thus ensuring the relative positions of the multiple bushings.

[0010] In one alternative embodiment, the base plate has a clearance space for the mounting position of the locking pin; and / or, at least a portion of the base plate's surface facing away from the base plate has a roughening structure; and / or, the positioning protrusion is an annular structure. The clearance space is used to avoid the locking pin and prevent interference between components, the roughening structure is used to improve the contact reliability between the base plate and the crossbeam on the rear floor, and the positioning protrusion is an annular structure to fit the bushing.

[0011] In one optional embodiment, the first mounting hole has a first direction Y and a second direction X within its plane. The dimensions of the first mounting hole in the first direction and the second direction are the same, or the dimensions of the first mounting hole in the first direction are greater than the dimensions in the second direction, or the dimensions of the first mounting hole in the first direction are smaller than the dimensions in the second direction. This arrangement of the first mounting hole's dimensions in the first direction being different from or the same as its dimensions in the second direction adapts to different driving conditions of the vehicle, thereby allowing the elastic spacer located between the first mounting hole and the bushing to absorb vibrations from the first and second directions.

[0012] In an optional embodiment, the locking device further includes an adhesive layer covering the substrate and filling the portion between the first mounting hole and the bushing to form an elastic spacer. The locking device reduces energy transmission, decreases resonance amplitude, and lowers ear-piercing noise through the adhesive layer.

[0013] In one optional embodiment, the locking device further includes a limiting block, and the substrate further includes a connecting flange extending beyond the adhesive layer. The limiting block is connected to the connecting flange. The limiting block is used to restrict the position of the substrate and prevent the substrate from shifting left or right.

[0014] In one alternative embodiment, a recess is provided on the surface of the adhesive layer facing away from the locking pin, and the base plate is disposed within the recess. The recess provides installation space and limiting space for the base plate, ensuring the positional stability of the base plate.

[0015] Secondly, this utility model also provides a carrier, including: the locking device described in the above embodiment.

[0016] Since the vehicle includes a locking device, which has the same effect as the locking device, it will not be described in detail here. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is an attached view of a locking device according to an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure at point AA; Figure 3 for Figure 2 A magnified view of part B in the diagram; Figure 4 This is a schematic diagram of the locking device according to an embodiment of the present utility model; Figure 5 This is an exploded structural diagram of the locking device according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the structure of the bushing of the locking device according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of the base plate assembly of the locking device according to an embodiment of the present utility model from one perspective; Figure 8 This is a structural schematic diagram of the base plate assembly of the locking device according to another embodiment of the present utility model; Figure 9 This is a schematic diagram of the base plate of the locking device according to an embodiment of the present utility model; Figure 10 This is a schematic diagram of the structure of the rubber coating layer of the locking device in an embodiment of this utility model.

[0019] Explanation of reference numerals in the attached figures: 10. Substrate; 11. First mounting hole; 12. Connecting flange; 20. Locking post; 30. Bushing; 31. Stepped structure; 311. Vertical stepped surface; 312. Horizontal stepped surface; 32. First through hole; 40. Base plate assembly; 41. Base plate; 411. Rough structure; 42. Positioning protrusion; 43. Second through hole; 50. Coating layer; 51. Recess; 60. Limiting block. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] Exemplary embodiments according to this application will now be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in many different forms and should not be construed as being limited to the embodiments set forth herein. It should be understood that these embodiments are provided so that the disclosure of this application is thorough and complete, and that the concept of these exemplary embodiments is fully conveyed to those skilled in the art. In the drawings, for clarity, the thickness of layers and regions may be exaggerated, and the same reference numerals are used to denote the same devices, and therefore their description will be omitted.

[0024] In related technologies, the bottom of the bushing is provided with an annular protrusion, and the radial distance of the annular protrusion is gradually changed along the axial direction of the bushing to form an inclined protrusion. Correspondingly, an inclined groove is provided on the base plate, so that the annular protrusion and the groove cooperate to achieve the fit and fixation of the bushing and the base plate.

[0025] During vehicle operation, vehicles are constantly subjected to vibrations and impacts from the road surface. Under long-term vibration, the relative displacement between the annular protrusion and the groove may occur due to this inclined fit. The component of the friction force provided by the inclined surface in the direction of vibration can easily cause the two to loosen, resulting in a less tight connection between the bushing and the base plate, which in turn affects the overall stability of the locking device.

[0026] Furthermore, both the annular protrusion and the base plate groove have an inclined shape, requiring precise alignment during assembly for the annular protrusion to smoothly fit into the groove. In actual production, due to manufacturing tolerances, even minor deviations can lead to difficulties in assembly, thereby reducing production efficiency.

[0027] The following is combined with Figures 1 to 10 The following describes embodiments of the present invention.

[0028] First, it should be noted that the following description uses the locking device in this embodiment for connection to the vehicle's tailgate. However, those skilled in the art will understand that any locking device in a vehicle can be the locking device in this embodiment, and the following content should not be construed as meaning that the locking device in this embodiment can only be used to connect to the tailgate of a vehicle.

[0029] A locking device is provided according to an embodiment of this utility model. For example... Figure 1 , Figure 2 , Figure 4 , Figure 5 As shown, the locking device includes a base plate 10, a bushing 30, and a base plate assembly 40. The base plate 10 has a locking pin 20 and a first mounting hole 11. The bushing 30 is located within the first mounting hole 11, and an elastic separator is provided between the first mounting hole 11 and the bushing 30. The bushing 30 has a first through hole 32. The base plate assembly 40 is located at the bottom of the base plate 10 and has a second through hole 43. The first mounting hole 11, the first through hole 32, and the second through hole 43 are coaxially arranged. The base plate assembly 40 has a positioning protrusion 42 at the second through hole 43, which extends into the first through hole 32.

[0030] In this embodiment, a first mounting hole 11 is provided on the substrate 10, and a bushing 30 is disposed in the first mounting hole 11. The first through hole 32 of the bushing 30 is used for bolts to pass through. An elastic separator is used to provide buffering and elastic pre-tightening between the substrate 10 and the bushing 30 to absorb the impact of closing the door and the vibration of the vehicle. The base plate assembly 40 has a second through hole 43. The first mounting hole 11, the first through hole 32 and the second through hole 43 are coaxially arranged, so that bolts can pass through the first through hole 32 and the second through hole 43 in sequence to connect and fix with the floor beam. A positioning protrusion 42 is provided at the second through hole 43, and by extending the positioning protrusion 42 into the first through hole 32, the positioning protrusion 42 has a guiding function, which makes the assembly of the base plate assembly 40 and the bushing 30 simple. In addition, the positioning protrusion 42 has radial and axial restraint forces on the bushing 30, preventing the bushing 30 from shifting due to assembly gaps or vibrations, thus achieving the stability of the bushing 30 installation and solving the problem of door lock malfunction caused by unstable bushing installation in the prior art.

[0031] like Figure 9 As shown, the substrate 10 is roughly in the form of a sheet structure, and a locking post 20 is provided on the substrate 10. The locking post 20 is roughly in the form of a "U" shape and is used to connect with the door lock on the rear door of the vehicle.

[0032] like Figure 9As shown, the base plate 10 is also provided with a first mounting hole 11, which is used to fix the base plate 10 to the vehicle. During assembly, bolts (or other fasteners) are passed through the first mounting hole 11 and screwed into the holes of the crossbeam on the rear floor to achieve fixation. Furthermore, a bushing 30 is provided inside the first mounting hole 11 for the bolt to pass through, and an elastic separator is provided between the inner wall of the first mounting hole 11 and the outer wall of the bushing 30. Thus, during vehicle operation, the vibration of the frame is transmitted to the bolt and bushing 30, while the vibration of the bushing 30 is absorbed by the elastic separator. Therefore, the impact of vibration on the base plate 10 is greatly reduced, preventing vibration from being transmitted along the base plate 10, the locking pillar 20, and the tailgate to the vehicle interior. The above structure can prevent rear-end noises during vehicle operation.

[0033] In this embodiment, the bushing 30 is a sleeve structure, including a constant diameter section and a flared section. The flared section faces the locking post 20 and is used to mate with the head of the bolt. Of course, those skilled in the art can determine the specific shape of the bushing 30 according to actual needs.

[0034] like Figure 2 As shown, a base plate assembly 40 is also provided on the base plate 10. The base plate assembly 40 and the locking pin 20 are respectively located on two opposite surfaces of the base plate 10. The base plate assembly 40 is used to mate with the surface to be installed and to increase friction and bonding force, so that the locking device is less likely to slip on the surface along the axis perpendicular to the first mounting hole 11. At the same time, a second through hole 43 is provided on the base plate assembly 40. The second through hole 43 is coaxially arranged with the first through hole 32. During assembly, the bolt passes through the first through hole 32 and the second through hole 43 in sequence.

[0035] from Figure 2 As can be seen, the base plate assembly 40 has a positioning protrusion 42 at the position of the second through hole 43. The positioning protrusion 42 extends from the outside into the first through hole 32, thereby enabling quick positioning and installation between the base plate assembly 40 and the bushing 30. At the same time, the setting of the second through hole 43 allows the bushing 30 and the base plate assembly 40 to be connected as one unit in the radial direction, increasing the friction and bonding force between the locking device and the surface to be installed.

[0036] In one embodiment, the substrate 10 and the base plate assembly 40 are made of rigid materials.

[0037] Optionally, the substrate 10 and the base plate assembly 40 are made of metal.

[0038] In one embodiment, such as Figure 3 , such as 6, Figure 7As shown, the sidewall of the first through hole 32 is provided with a stepped structure 31, which penetrates the surface of the bushing 30 facing the base plate assembly 40, and the positioning protrusion 42 is provided inside the stepped structure 31.

[0039] Specifically, the stepped structure 31 is disposed on the inner wall of the bushing 30 and extends to the bottom of the bushing 30, so that when the positioning protrusion 42 of the base plate assembly 40 mates with the bushing 30, the positioning protrusion 42 engages with the stepped structure 31 along the axial direction of the bushing 30. Compared with the connection between the bushing and the base plate in related technologies, the engagement of the stepped structure 31 and the positioning protrusion 42, in addition to ensuring the coaxiality of the first mounting hole 11, the first through hole 32 and the second through hole 43, can also more precisely restrict the slight displacement of the bushing 30 in the horizontal and vertical directions. At the same time, the contact area between the stepped structure 31 and the positioning protrusion 42 is larger, that is, both the outer peripheral surface and the end face of the positioning protrusion 42 can contact the stepped structure 31, thus better distributing the various loads borne by the locking device during use, such as the impact force when closing the door and the vibration load during driving. The larger contact area reduces the pressure per unit area, reduces the risk of damage to components due to excessive local stress, and extends the service life of the locking device.

[0040] In one embodiment, such as Figure 3 , Figure 6 , Figure 7 As shown, the step structure 31 includes a vertical step surface 311 and a horizontal step surface 312. The vertical step surface 311 mates with the outer peripheral surface of the positioning protrusion 42, and the horizontal step surface 312 mates with the top of the positioning protrusion 42. The inner surface of the positioning protrusion 42 is flush with the wall of the first through hole 32.

[0041] On one hand, the vertical step surface 311 precisely matches the outer peripheral surface of the positioning protrusion 42. An interference fit or a clearance fit can be used between them. This design avoids a large gap between the bushing 30 and the base plate assembly 40, preventing radial relative movement between them. This structure prevents radial displacement of the bushing 30 from causing positional shift of the locking pin 20 on the base plate 10, thus avoiding misalignment between the latch and the locking pin 20, such as jamming when closing or incomplete locking. Furthermore, the positioning protrusion 42 provides reinforcement, preventing deformation when the bolts are tightened.

[0042] On the other hand, the top of the horizontal step surface 312 fits against the positioning protrusion 42, which directly limits the axial distance between the bushing 30 and the base plate assembly 40, that is, the relative position of the bushing 30 and the base plate assembly 40 in the axial direction of the first through hole 32. This prevents the bushing 30 from sinking towards the base plate assembly 40 or being pushed up towards the base plate 10 due to vibration or external force, and increases the structural tightness of the locking device.

[0043] In addition, the inner surface of the positioning protrusion 42 is flush with the wall of the first through hole 32, which ensures that the bolt can pass through smoothly and avoids bolt assembly difficulties caused by unevenness of the hole.

[0044] In one embodiment, the base plate assembly 40 includes a base plate 41 and positioning protrusions 42 located on the base plate 41. There are multiple first mounting holes 11, and each of the multiple first mounting holes 11 is provided with a bushing 30. There are multiple positioning protrusions 42, and the multiple positioning protrusions 42 are provided in a one-to-one correspondence with the multiple bushings 30. The multiple positioning protrusions 42 are integrally formed with the base plate 41.

[0045] At the same time, the bottom of the bushing 30 fits and abuts against the surface of the base plate 41 to achieve positioning.

[0046] It should be noted that in related technologies, the base plates are usually set independently. That is, even when the latch has multiple mounting holes and multiple bushings, the base plates are also set separately, with each bushing corresponding to one base plate for connection. In this structure, each bushing and each independent base plate need to be installed independently multiple times. To ensure the relative position of each bushing is accurate, it is necessary to use a single base plate as a reference for positioning. The deviation of multiple references will gradually accumulate, eventually leading to a large cumulative deviation, poor positional consistency of each bushing, and thus causing the locking pin to shift after assembly, resulting in abnormal closing of the vehicle's tailgate.

[0047] In this embodiment, the substrate 10 is provided with two first mounting holes 11, which are symmetrically arranged on both sides of the locking post 20. During assembly, two bolts are respectively inserted into the first mounting holes 11 to fix both sides of the substrate 10.

[0048] Furthermore, bushings 30 are provided in both first mounting holes 11, from... Figure 2 As can be seen, the base plate 41 has a large area, covering the two first mounting holes 11, and two positioning protrusions 42 are provided on the base plate 41. The relative positions of the two positioning protrusions 42 are adapted to the relative positions of the two second through holes 43. During assembly, the base plate 41 is fastened to the bottom of the positioning protrusions 42, so that the two positioning protrusions 42 are respectively inserted into the two bushings 30, that is, the two positioning protrusions 42 are assembled at one time.

[0049] In some embodiments not shown, the number of first mounting holes 11 may be set to two or more. In this case, each first mounting hole 11 is provided with a bushing 30, and multiple positioning protrusions 42 are correspondingly provided on the base plate 41. The number and arrangement of the positioning protrusions 42 are consistent with the first mounting holes 11.

[0050] Furthermore, by integrally molding multiple positioning protrusions 42 with the base plate 41, i.e., using only one base plate 41, and setting multiple positioning protrusions 42 on one base plate 41 corresponding to multiple bushings one by one, this form can use the same base plate 41 as a unique reference. When all positioning protrusions 42 are integrally molded based on this reference, and multiple bushings 30 are assembled with multiple positioning protrusions 42 in one correspondence, the position calibration of all bushings 30 can be completed in one positioning, avoiding the cumulative error of multiple references, and improving the relative position consistency of multiple bushings 30.

[0051] In one embodiment, the base plate 41 is provided with clearance space for the mounting position of the locking pin 20. Combined with Figure 7 As shown, the outer edge of the middle part of the base plate 41 has a symmetrical arc structure, which is a special design based on the installation structure of the lock pin 20.

[0052] In other embodiments, the shape of the clearance space is not limited to this, and it can also be a polygonal structure.

[0053] In one embodiment, such as Figure 8 As shown, at least a portion of the base plate 41 has a rough structure 411 on the surface opposite to the substrate 10. The rough structure 411 on the surface of the base plate 41 opposite to the substrate 10 and around the second through hole 43 improves the roughness of the contact between the base plate 41 and the crossbeam on the rear floor, thereby improving the contact reliability and load-bearing capacity with the crossbeam on the rear floor. At the same time, the friction at the bottom of the base plate 41 is large, making it less prone to displacement.

[0054] In one embodiment, the positioning protrusion 42 is an annular structure. The annular positioning protrusion 42 mates with the annular inner cavity of the bushing 30. In other embodiments, the shape of the positioning protrusion 42 is not limited to this. For example, the positioning protrusion 42 can also be formed by multiple ribs arranged circumferentially.

[0055] In one embodiment, the first mounting hole 11 has a first direction Y and a second direction X in the plane containing the first mounting hole 11, wherein the size of the first mounting hole 11 in the first direction Y and the size in the second direction X are the same.

[0056] It should be noted that when the locking device of this application is applied to a vehicle, the first direction Y is the left-right direction of the vehicle, and the second direction X is the front-back direction of the vehicle.

[0057] When the intensity of bumps (road undulations) in the left and right directions and impacts (starting and braking) in the front and rear directions is similar during vehicle operation, the first circular mounting hole 11 ensures that the elastic separator located between the first mounting hole 11 and the bushing 30 has the same elastic deformation space in the first and second directions. That is, the compression and stretching of the elastic separator are consistent in each direction, thereby absorbing the vibration energy in both directions in a balanced manner and avoiding abnormal noise from the lock caused by excessive vibration transmission in one direction.

[0058] In another embodiment, the first mounting hole 11 is larger in the first direction than in the second direction. When a vehicle travels on unpaved roads, changes lanes quickly, or passes over speed bumps, the vibration amplitude in the lateral direction is much greater than that in the longitudinal direction. The wider first mounting hole 11 in the first direction provides a larger deformation space for the elastic separator in the first direction. When strong vibrations in the first direction are transmitted to the locking pin 20, the elastic separator can absorb energy through greater compression and stretching, reducing the vibration transmission efficiency in the first direction and preventing high-frequency collision noises between the locking pin 20 and the bolt caused by strong vibrations. At the same time, the smaller size in the second direction can limit the excessive offset of the bushing 30 in the second direction, ensuring the positioning accuracy of the locking pin 20 in the longitudinal direction.

[0059] In another embodiment, such as Figure 9 As shown, the size of the first mounting hole 11 in the first direction is smaller than its size in the second direction. The first mounting hole 11 is designed as an elongated oval hole. During rapid acceleration, sudden braking, or a rear-end collision, a strong instantaneous impact force is generated in the front-rear direction, which is much greater than the lateral force in the left-right direction. The wider first mounting hole 11 in the second direction provides greater deformation space for the elastic separator. The instantaneous compression of the elastic separator can absorb impact energy, reducing the impact force transmitted to the locking pin 20 and preventing the locking pin 20 from deforming or breaking due to the strong impact in the second direction. Simultaneously, the smaller size of the first mounting hole 11 in the first direction limits the offset of the bushing 30 in the first direction, ensuring the positioning accuracy of the locking pin 20 in the left-right direction.

[0060] In one embodiment, the locking device further includes an adhesive layer 50, which covers the substrate 10 and fills the portion between the first mounting hole 11 and the bushing 30 to form an elastic spacer. The adhesive layer 50 can absorb energy through its own deformation. During vehicle operation, road surface excitation is transmitted to the locking device through the tires, suspension, and body. The locking device reduces energy transmission through the adhesive layer 50, thereby reducing resonance amplitude and lowering ear pressure noise.

[0061] In one embodiment, the locking device further includes a limiting block 60, and the base plate 10 further includes a connecting flange 12, which extends beyond the adhesive layer 50. The limiting block 60 is connected to the connecting flange 12. The limiting block 60 is used to connect with the rear floor. The limiting block 60 is connected to the base plate 10 through the connecting flange 12, which restricts the displacement of the base plate 10, thereby ensuring the position of the bushing 30 and ensuring that bolts or other fasteners can be accurately inserted into the first through hole 32 and the second through hole 43, improving assembly efficiency and accuracy.

[0062] In one embodiment, such as Figure 10As shown, a recess 51 is provided on the surface of the rubber coating layer 50 facing away from the locking pin 20. The base plate 41 is disposed in the recess 51, so that during assembly, no additional positioning fixtures are needed. The base plate 41 can be directly embedded into the recess 51 to complete the position constraint, avoiding misalignment between the second through hole 43 and the crossbeam hole on the rear floor caused by the base plate 41 shifting. When the vehicle vibrates, the sidewall of the recess 51 can prevent the base plate 41 from sliding laterally. Combined with the friction of the rough structure 411, the contact stability between the base plate 41 and the crossbeam on the rear floor is further improved, preventing loosening of the connection due to contact slippage.

[0063] According to an embodiment of the present invention, another aspect provides a carrier, including the locking device described in the above embodiment.

[0064] The vehicle can be a car or a low-altitude aircraft.

[0065] The vehicles can be either new energy vehicles or gasoline-powered vehicles.

[0066] When the vehicle is a car, the aforementioned latching device is installed on the crossbeam of the rear floor and is used to engage with the door lock on the rear door.

[0067] Of course, the locking devices described in the above embodiments can also be used for other locations in the vehicle.

[0068] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0069] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment described in the general description of this application. The appearance of the same expression in multiple places in the specification does not necessarily refer to the same embodiment. Furthermore, when a specific feature, structure, or characteristic is described in connection with any embodiment, the intention is to suggest that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0070] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A locking device, characterized in that, include: The substrate (10) is provided with a locking post (20) and a first mounting hole (11). A bushing (30) is located inside the first mounting hole (11). An elastic separator is provided between the first mounting hole (11) and the bushing (30). The bushing (30) is provided with a first through hole (32). The base plate assembly (40) is located at the bottom of the substrate (10). The base plate assembly (40) is provided with a second through hole (43). The first mounting hole (11), the first through hole (32) and the second through hole (43) are coaxially arranged. The base plate assembly (40) is provided with a positioning protrusion (42) at the second through hole (43). The positioning protrusion (42) extends into the first through hole (32).

2. The locking device according to claim 1, characterized in that, The sidewall of the first through hole (32) is provided with a stepped structure (31), the stepped structure (31) penetrates the surface of the bushing (30) facing the base plate assembly (40), and the positioning protrusion (42) is provided in the stepped structure (31).

3. The locking device according to claim 2, characterized in that, The step structure (31) includes a vertical step surface (311) and a horizontal step surface (312). The vertical step surface (311) engages with the outer peripheral surface of the positioning protrusion (42), the horizontal step surface (312) engages with the top of the positioning protrusion (42), and the inner surface of the positioning protrusion (42) is flush with the wall of the first through hole (32).

4. The locking device according to any one of claims 1-3, characterized in that, The base plate assembly (40) includes a base plate (41) and a positioning protrusion (42) located on the base plate (41). There are multiple first mounting holes (11), and each of the multiple first mounting holes (11) is provided with a bushing (30). There are multiple positioning protrusions (42), and each of the multiple positioning protrusions (42) is provided with a corresponding bushing (30). The multiple positioning protrusions (42) are integrally formed with the base plate (41).

5. The locking device according to claim 4, characterized in that, The base plate (41) is provided with clearance space to avoid the mounting position of the locking pin (20); and / or, At least a portion of the base plate (41) has a roughened structure (411) on its surface opposite to the substrate (10); and / or, The positioning protrusion (42) is a ring structure.

6. The locking device according to claim 1, characterized in that, The plane containing the first mounting hole (11) has a first direction (Y) and a second direction (X), wherein, The first mounting hole (11) has the same size in the first direction and the same size in the second direction, or; The first mounting hole (11) is larger in the first direction than in the second direction, or; The first mounting hole (11) is smaller in size in the first direction than in the second direction.

7. The locking device according to claim 4, characterized in that, The locking device further includes: An adhesive layer (50) covers the outside of the substrate (10), and the portion of the adhesive layer (50) filling between the first mounting hole (11) and the bushing (30) forms the elastic separator.

8. The locking device according to claim 7, characterized in that, The locking device further includes: The limiting block (60) and the substrate (10) further include a connecting flange (12) which extends out of the adhesive layer (50) and the limiting block (60) are connected to the connecting flange (12).

9. The locking device according to claim 7, characterized in that, The surface of the rubber coating layer (50) facing away from the locking post (20) is provided with a recess (51), and the base plate (41) is disposed in the recess (51).

10. A vehicle, characterized in that, include: The locking device according to any one of claims 1-9.

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