Lifting type table plate device for vehicle

Abstract

The utility model discloses a lifting type table plate device for a vehicle, and relates to the field of functional components in the vehicle, the lifting type table plate device comprises a box body assembly and a lifting table plate assembly which is contained in the box body assembly and has a telescopic function, and the lifting table plate assembly comprises a constant-force linear sliding rail assembly fixed in the box body assembly and a table plate body assembled on the constant-force linear sliding rail assembly. The device adopts a full-mechanical structure, the internal structure is subjected to topological optimization, the device has excellent working stability, meanwhile, the production cost is effectively controlled, and the product suitability is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of in-vehicle functional components, in particular to a lifting type table board device for vehicles. BACKGROUND

[0002] With the continuous development of the automobile industry and the diversification of consumers' demand for vehicle functions, MPV and other passenger vehicles gradually penetrate from business reception scenarios to the field of family cars due to their spacious interior space advantage. Under this background, the in-vehicle lifting type table board device as an important functional configuration to improve the driving experience, its market demand presents a significant growth trend. In the current market, such devices are mainly applied to luxury and super luxury vehicles, and their technical implementation relies on the coordinated cooperation of precise electric control systems and composite damping structures. Through the combined design of multi-stage transmission mechanism and intelligent sensing module, the stable lifting and stable support of the table board are realized. Although such technical solutions can meet the stringent requirements of high-end vehicles for function stability, there are significant limitations in the technical implementation path.

[0003] The deficiencies of the prior art architecture mainly manifest in three dimensions: first, the electric control system needs to integrate multiple components such as servo motors, sensors and control units, resulting in high material costs, which is difficult to adapt to the price-sensitive mid-end and entry-level vehicle market; second, the high requirements of complex mechanical structures for installation space are in conflict with the diversity of vehicle interior space layout, and the differences in floor structure and seat rail spacing of different vehicles often lead to insufficient adaptability of existing devices; third, the multi-stage transmission mechanism is prone to component wear during long-term use, and professional equipment is needed for precise adjustment during maintenance, which significantly increases the life cycle cost. In essence, the high acceptance of function premium in the luxury vehicle market objectively reduces the cost sensitivity of the technical solution, while the dual demands of cost control and function universality in the mainstream passenger vehicle market have not been effectively responded.

[0004] In view of the current industry pain points, it has significant market value to develop a lifting type table board device with simplified structure and optimized cost. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to at least overcome one deficiency of the prior art, and to provide a lifting type table board device for vehicles, which adopts a full mechanical structure, the internal structure is topologically optimized, has excellent working stability, and effectively controls the production cost and expands the product adaptability.

[0006] To achieve the above-mentioned purpose, the present application discloses a lifting type table board device for vehicles, comprising a box assembly, a lifting table board assembly accommodated in the box assembly and having a telescopic function, wherein the lifting table board assembly comprises a constant force linear slide rail assembly fixed in the box assembly, and a table board body assembled on the constant force linear slide rail assembly.

[0007] The constant force linear slide rail assembly defines an upper stroke limit position and a lower stroke limit position in the box assembly; when at the upper limit position, the table top body is fully extended outside the box assembly, and when at the lower limit position, the table top body is fully stored inside the box assembly;

[0008] The box assembly is provided with a lower limit position locking mechanism linked with the lower stroke limit position of the constant force linear slide rail assembly;

[0009] The constant force linear slide rail assembly comprises at least one set of linear slide rails and a sliding bearing seat slidingly connected with the linear slide rails; the sliding bearing seat is provided with a linkage locking assembly hinged with the table top body and a constant force spring driving mechanism achieving constant force output; correspondingly, the box assembly is provided with a lock catch unit engaging with the linkage locking assembly and a fixed anchor point coupled with the constant force spring driving mechanism at the upper stroke limit position; the upper stroke limit position is kept by engagement locking of the lock catch unit and the linkage locking assembly, and the fixed anchor point provides an elastic reset reference for the constant force spring driving mechanism.

[0010] Further, the lower limit position locking mechanism comprises a positioning bolt limiting with the sliding bearing seat and a linkage crank mechanism driving the positioning bolt; the switching of the limiting relationship between the positioning bolt and the sliding bearing seat is achieved by operating the movement trajectory of the crank mechanism.

[0011] Further, the linkage locking assembly comprises a base shell fixed to the sliding bearing seat, a transmission shaft axially inserted into the base shell, a non-circular cam provided at the end of the transmission shaft, a push rod slider elastically reset slidingly fitted into the base shell and distributed on both sides of the non-circular cam, and an elastic reset lock tongue with self-resetting function; the non-circular cam is provided with at least one set of long shaft phase and short shaft phase; the push rod slider is driven to perform reciprocating linear motion by cam rotation, thereby actuating the elastic reset lock tongue to engage or separate from the lock catch unit.

[0012] Further, the transmission shaft is provided with a rotation damping mechanism and forms a movement coupling with the table top body.

[0013] Further, the constant force spring driving mechanism adopts a symmetrical layout and is divided into two parts disposed on both sides of the sliding bearing seat and respectively forms an elastic connection with the corresponding fixed anchor point; the constant force spring driving mechanism comprises a mounting bracket, at least two sets of constant force spiral springs arranged in a vertical direction; the force applying end of each constant force spiral spring extends out of the mounting bracket and forms a tension connection with the fixed anchor point.

[0014] Further, the table top body comprises a main support arm hinged with the transmission shaft, a secondary support arm orthogonally hinged with the main support arm, and a bearing table surface horizontally hinged with the secondary support arm.

[0015] As preferred, a strut with rotating elasticity or damping is arranged between the main support arm and the auxiliary support arm, and the force provided by the strut maintains the structural rigidity in the unfolded state.

[0016] As preferred, the bearing table top adopts a multi-section folding table top structure comprising at least two folding units.

[0017] The present application effectively overcomes the defects of high cost and poor adaptability of complex damping structure of the existing electric control system through the design of a full-mechanical transmission architecture. The constant force spring driving mechanism and the double-limiting locking assembly are cooperated to realize the substantial simplification of the overall structure and the standardized production of the core components under the premise of ensuring constant thrust in the lifting process and reliable position locking, thereby significantly reducing the manufacturing cost and assembly complexity, improving the product universality, reducing the later maintenance demand, and providing a lifting table board solution with functionality and economy for the medium and low-end passenger vehicle market.

[0018] The above listed beneficial effects are not exhaustive of all advantages. Other potential beneficial effects and detailed technical implementation methods will be further disclosed in the embodiments or other description parts of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0019] The specific embodiments will be better understood after reading the detailed description of the embodiments in conjunction with the accompanying drawings, in which the positions, sizes, and ranges of the structures shown in the drawings are sometimes not representative of the actual positions, sizes, and ranges. In the drawings:

[0020] Fig. 1 is a structural schematic diagram of an embodiment disclosed by the present application, in which the table board is in the extended state.

[0021] Fig. 2 is a structural schematic diagram of an embodiment disclosed by the present application, in which the table board is in the use state.

[0022] Fig. 3 is an exploded view of an embodiment disclosed by the present application.

[0023] Fig. 4 is a structural schematic diagram of a constant force linear slide rail assembly in an embodiment disclosed by the present application.

[0024] Fig. 5 is a structural schematic diagram of a linkage locking assembly in an embodiment disclosed by the present application.

[0025] The numbers in the drawings respectively are:

[0026] 1 - box assembly, 2 - lifting table board assembly, 200 - constant force linear slide rail assembly, 201 - linear slide rail, 202 - sliding bearing seat, 203 - linkage locking assembly, 204 - constant force spring driving mechanism, 101 - lock catch unit, 102 - fixed anchor point, 400 - lower limit locking mechanism, 2001 - base housing, 2002 - transmission shaft, 2003 - non-circular cam, 2004 - push rod slider, 2005 - elastic reset locking tongue, 2006 - mounting bracket, 2007 - constant force volute spring, 300 - table board body, 3001 - main support arm, 3002 - auxiliary support arm, 3003 - bearing table top, 3004 - strut. DETAILED DESCRIPTION

[0027] The present disclosure will be described with reference to the accompanying drawings, which show several embodiments of the present disclosure. It is understood that the present disclosure can be presented in many different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the disclosure of the present disclosure more complete and fully convey the scope of protection of the present disclosure to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0028] It should be understood that in all the drawings, the same reference numerals represent the same elements. In the drawings, the size of some features can be distorted for the sake of clarity.

[0029] It should be understood that the language used in the specification is only used to describe specific embodiments and is not intended to limit the present disclosure. Unless otherwise defined, all terms (including technical and scientific terms) used in the specification have the meanings commonly understood by those skilled in the art. For the sake of brevity and / or clarity, techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate.

[0030] The singular forms "a", "said" and "the" used in the specification, unless clearly indicated otherwise, include plural forms. The language "includes", "comprises" and "contains" used in the specification means the presence of the claimed feature, but does not exclude the presence of one or more other features. The language "and / or" used in the specification includes any and all combinations of one or more of the related listed items.

[0031] Referring to the drawings Figs. 1 to 5 The following is an embodiment of the vehicle lifting table device:

[0032] The embodiment relates to a lifting type table plate device for a vehicle, which is mainly composed of a box assembly 1 and a lifting table plate assembly 2. The box assembly 1 is used as a support and a containing body of the whole device, is made of a solid and light material, such as a high-strength engineering plastic combined with a metal frame, and ensures stability and durability during vehicle driving. The lifting table plate assembly 2 is contained in the box assembly 1 and has a telescopic function, and can be extended out of the box assembly 1 and unfolded according to use requirements.

[0033] A key part in the lifting table plate assembly 2 is a constant force linear slide rail assembly 200, which is fixed in the box assembly 1 and plays a role of installing and fixing and guiding a motion track of a table plate body 300 in the lifting table plate assembly 2.

[0034] The constant force linear slide rail assembly 200 contains at least one set of linear slide rails 201, which are made of high-precision aluminum alloy materials and are subjected to hardening treatment on surfaces to improve wear resistance and service life. A sliding bearing seat 202 which is sleeved with the linear slide rails 201 is also made of light and high-strength alloy materials, and guarantees smoothness and bearing capacity in the sliding process. The sliding bearing seat 202 is provided with a linkage locking assembly 203 which is hinged with the table plate body 300 and a constant force spring driving mechanism 204 which realizes constant force output.

[0035] The constant force linear slide rail assembly 200 is provided with an upper stroke limit position and a lower stroke limit position in the box assembly 1. When the table plate body 300 is at the upper limit position, the table plate body 300 is completely extended outside the box assembly 1, and provides sufficient working or placing space for a user. When the table plate body 300 is at the lower limit position, the table plate body 300 is completely contained in the box assembly 1, space is saved, and normal use of the vehicle is not affected. Precise control of the stroke is due to precise cooperation between the constant force linear slide rail assembly 200 and the box assembly 1.

[0036] The box assembly 1 is provided with a lock catch unit 101 and a fixed anchor point 102 at the upper stroke limit position. The fixed anchor point 102 is arranged at a proper position of the box assembly 1 and is fixed on the box assembly 1 through high-strength bolts or rivets.

[0037] Specifically, the box assembly 1 is provided with a lower limit locking mechanism 400 linked with the lower limit of the stroke of the constant force linear slide rail assembly 200. The lower limit locking mechanism 400 comprises a positioning bolt matched with the sliding bearing seat and a linkage crank mechanism driving the positioning bolt. The positioning bolt is made of stainless steel, has good toughness and corrosion resistance, one end of which is abutted with the sliding bearing seat 202, and the other end of which is connected with the linkage crank mechanism. The linkage crank mechanism realizes the switching of the limiting relationship between the positioning bolt and the sliding bearing seat 202 by operating the movement trajectory of the crank mechanism. When it is needed to store the table board body 300, the linkage crank mechanism is operated to make the positioning bolt inserted into the limiting hole of the sliding bearing seat 202, so as to fix the table board body 300 at the lower limit position; when it is needed to unfold the table board body 300, the linkage crank mechanism is reversely operated to make the positioning bolt disengaged from the sliding bearing seat 202, and the table board body 300 can be slowly lifted under the action of the constant force spring driving mechanism 204.

[0038] The linkage locking assembly 203 is a key component for realizing the upper limit retention of the table board body 300. It comprises a base shell 2001 fixed to the sliding bearing seat 202, which is made of aluminum alloy by pressure casting and has good strength and rigidity. A transmission shaft 2002 is axially inserted into the base shell 2001, which is made of high-quality carbon steel and has a surface quenching treatment to improve its wear resistance and fatigue strength. A non-circular cam 2003 is arranged at the end of the transmission shaft 2002, which is in the shape of an ellipse and forms a group of long-axis phases and short-axis phases, and drives a push rod slider 2004 to perform reciprocating linear motion. The push rod slider 2004 is elastically reset and slidably arranged on the base shell 2001 and distributed on both sides of the non-circular cam 2003, and is made of a metal stamping part.

[0039] Meanwhile, the linkage locking assembly 203 also has an elastic reset lock tongue 2005 with a self-resetting function, which is made of spring steel and realizes the self-resetting function through the elastic force of the spring. When the table board body 300 reaches the upper limit, the long-axis phase of the non-circular cam 2003 pushes the push rod slider 2004 to move, and in turn drives the elastic reset lock tongue 2005 to engage with the lock catch unit 101, thereby realizing the stable retention of the table board body 300 at the upper limit. When it is needed to lower the table board body 300, the transmission shaft 2002 is rotated by operating the table board body 300, the short-axis phase of the non-circular cam 2003 reversely moves the push rod slider 2004, and the elastic reset lock tongue 2005 is separated from the lock catch unit 101 under the action of the spring force, so that the table board body 300 can be lowered and withdrawn into the box assembly 1 under the action of external force.

[0040] In the above structure, the transmission shaft 2002 is also provided with a rotation damping mechanism and is in motion coupling with the table body 300. The rotation damping mechanism adopts oil damping or friction damping, and by adjusting the resistance in the rotation process of the transmission shaft 2002, the stability of the table body 300 in the rotation process and the operation experience are realized.

[0041] In the present embodiment, the constant force spring driving mechanism 204 adopts a symmetrical layout and is arranged on both sides of the sliding bearing seat 202. This layout can ensure the balance and stability of the table body in the lifting process. The constant force spring driving mechanism 204 includes a mounting bracket 2006 made of steel plate stamping and having good strength and rigidity. At least two groups of constant force spiral springs 2007 are arranged in the vertical direction. The constant force spiral springs 2007 are made of high-quality alloy steel and have good elasticity and durability. The force applying end of each constant force spiral spring 2007 extends out of the mounting bracket 2006 and is in tension connection with the fixed anchor point 102, so that the table body 300 is uniformly stressed and moves stably in the lifting process.

[0042] The table body 300 includes a main support arm 3001 hinged with the transmission shaft 2002, a secondary support arm 3002 orthogonally hinged with the main support arm 3001, and a bearing table 3003 horizontally hinged with the secondary support arm 3002. The main support arm 3001 and the secondary support arm 3002 are made of high-strength aluminum alloy pipes and have good strength and rigidity, while reducing the overall weight. The bearing table 3003 is made of high-density fiberboard or composite material plate, and the surface is covered with a wear-resistant, waterproof and easy-to-clean coating to meet various needs in vehicle use environment.

[0043] The bearing table 3003 adopts a multi-section folding table structure including at least two folding units, which is used to further reduce the storage volume and ensure the use area after unfolding.

[0044] The main support arm 3001 and the secondary support arm 3002 are provided with a support rod 3004 with rotation elasticity or damping. The rotation axis of the support rod 3004 has elastic force or Yin Ni. The structure stiffness in the unfolded state is maintained by the force provided by the support rod 3004, which ensures the stability and carrying capacity of the table body 300 in the use process, and avoids affecting the user's experience due to the bumping or shaking in the vehicle driving process.

[0045] In actual use scenarios, when the passenger needs to use the table board, the positioning pin is disengaged from the sliding bearing seat 202 by operating the linkage crank mechanism, and the table board body 300 slowly rises under the action of the constant force spring driving mechanism 204. After the table board body 300 is raised to the position, the user operates the table board body 300 to rotate, which rotates the transmission shaft 2002 and the non-circular cam 2003. When reaching the upper limit position, the long axis of the non-circular cam pushes the push rod slider 2004 to move, and the elastic reset latch 2005 engages with the lock catch unit 102, so that the table board body 300 is stably kept in the unfolded state. At this time, the passenger can place articles on the table board or perform writing, dining and other operations. When the table board is not needed, the elastic reset latch 2005 is disengaged from the lock catch unit 102 by operating the table board body 300 to drive the transmission shaft 2002 to rotate, and then the table board body 300 is manually folded to the initial state and pushed down into the box assembly 1 until the positioning pin is inserted into the limiting hole of the sliding bearing seat 202. The table board body 300 is fixed in the storage state, the whole process is simple and smooth to operate, and has good stability and safety, effectively improving the utilization rate of the space in the vehicle and the use experience of the passenger.

[0046] Although exemplary embodiments of the present disclosure have been described, those skilled in the art should understand that various changes and modifications can be made to the exemplary embodiments of the present disclosure without departing from the spirit and scope of the present disclosure in essence. Therefore, all changes and modifications are included in the protection scope of the present disclosure defined by the claims. The present disclosure is defined by the appended claims, and equivalents of these claims are also included.

Claims

1. A vehicle-mounted lifting table device, characterized in that, The box assembly, the lifting table plate assembly accommodated in the box assembly and having the telescopic function, wherein the lifting table plate assembly contains the constant force linear slide rail assembly fixed in the box assembly, the table plate body assembled on the constant force linear slide rail assembly; The constant force linear slide rail assembly defines the upper limit position and the lower limit position in the box assembly, when being in the upper limit position, the table plate body is fully stretched outside the box assembly, when being in the lower limit position, the table plate body is fully accommodated inside the box assembly; The box assembly is internally provided with the lower limit position locking mechanism linked with the lower limit position of the constant force linear slide rail assembly; The constant force linear slide rail assembly contains at least one set of linear slide rails and the sliding bearing seat slidably sleeved with the linear slide rails, the sliding bearing seat is provided with the linkage locking assembly hinged with the table plate body and the constant force spring driving mechanism achieving the constant force output, correspondingly, the box assembly is provided with the lock unit engaging with the linkage locking assembly and the fixed anchor point coupled with the constant force spring driving mechanism at the upper limit position, the upper limit position is kept by the engagement locking of the lock unit and the linkage locking assembly, and the fixed anchor point provides the elastic reset reference for the constant force spring driving mechanism.

2. A lift table device for a vehicle as set forth in claim 1, characterized by The lower limit position locking mechanism contains the positioning bolt limiting matched with the sliding bearing seat and the linkage crank mechanism driving the positioning bolt, the switching of the limiting relationship between the positioning bolt and the sliding bearing seat is achieved by operating the movement track of the crank mechanism.

3. A lift table assembly for a vehicle as defined in claim 1, wherein The linkage locking assembly contains the base shell fixed to the sliding bearing seat, the transmission shaft axially inserted into the base shell, the non-circular cam provided at the end of the transmission shaft, the push rod slider elastically reset slidably arranged in the base shell and distributed on both sides of the non-circular cam, and the elastic reset lock tongue having the self-reset function; the non-circular cam is provided with at least one set of long shaft phase and short shaft phase, the push rod slider is driven to perform reciprocating linear motion by the rotation of the cam, and then the elastic reset lock tongue is actuated to achieve the engagement or separation with the lock unit; The table plate body contains the main support arm hinged with the transmission shaft, the auxiliary support arm orthogonally hinged with the main support arm, and the bearing table surface horizontally hinged with the auxiliary support arm.

4. A lift table assembly for a vehicle as defined in claim 3 wherein, The transmission shaft is provided with the rotation damping mechanism and forms the movement coupling with the table plate body.

5. A lift table assembly for a vehicle as defined in claim 3 wherein, The main support arm and the auxiliary support arm are provided with the strut having the rotation elasticity or damping, and the structural rigidity in the unfolded state is maintained by the force provided by the strut.

6. A lift table assembly for a vehicle as defined in claim 3 wherein, The bearing table surface adopts the multi-section folding table surface structure containing at least two folding units.

7. A lift table assembly for a vehicle as defined in claim 1 wherein, The constant force spring driving mechanism adopts the symmetrical layout, is divided into two sides of the sliding bearing seat and respectively forms the elastic connection with the corresponding fixed anchor point; the constant force spring driving mechanism contains the mounting bracket, at least two groups of constant force spiral springs arranged in the vertical direction, the force applying end of each constant force spiral spring extends out of the mounting bracket and forms the tension connection with the fixed anchor point.

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