Hidden telescopic support for vehicle-mounted multimedia device

Abstract

The application discloses a hidden telescopic support of a vehicle-mounted multimedia device, which comprises a guiding mechanism, a telescopic mechanism and a support plate mechanism. The guiding mechanism is constructed as a base of each moving part and is fixed in the interior of an automotive interior part. The telescopic mechanism is driven by a motor to move together with the support plate mechanism with the guiding mechanism as the base and is switched between a locked state and an unlocked state. When the telescopic mechanism is in the locked state, the telescopic mechanism and the support plate mechanism move between an extended posture and a hidden posture. When the telescopic mechanism is in the unlocked state, the support plate mechanism is driven by the telescopic mechanism to rotate and is switched between an original posture and an overturned posture. The locking function of the support is realized by a special-shaped surface formed by a locking pin and a guide groove. The overturning of the support plate mechanism is realized by a connecting rod mechanism and a gear transmission system, so that the support is switched between the hidden posture and the overturned posture by an electric drive system.

Description

Technical Field

[0001] This invention relates to the field of automotive interiors, and in particular to a concealed telescopic bracket for in-vehicle multimedia equipment. Background Technology

[0002] The use of in-vehicle intelligent interactive devices is becoming increasingly diversified. In order to better meet the needs of users, more and more passenger cars are equipped with brackets for supporting in-vehicle displays or in-vehicle tablet multimedia devices, and a telescopic mechanism is used to hide and extend the brackets.

[0003] Chinese utility model patent application CN215621763U discloses a hidden car phone holder, a car center console, and a car. The hidden car phone holder includes a holder body for securing the phone, which is mounted on the dashboard. The dashboard has a through hole adapted to the holder body, and the holder body is slidably installed within the through hole. This allows the holder body to slide between a working position and a hidden position relative to the dashboard. Although this product is hidden within the dashboard and can slide between working and hidden positions relative to the dashboard, it requires manual operation. Furthermore, due to its simple structure, the feel when switching between working and hidden positions is unsatisfactory, failing to meet the quality requirements of many car manufacturers. Summary of the Invention

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A retractable bracket for in-vehicle multimedia equipment, wherein the retractable bracket is installed inside automotive interior parts and switches between an extended and a retracted position via a sliding mechanism, comprising:

[0006] A guiding mechanism, wherein the guiding elements form the base of each moving part and are fixed inside the automotive interior parts;

[0007] The telescopic mechanism, driven by a motor, moves together with the pallet mechanism based on the guide mechanism and switches between locked and unlocked states.

[0008] When the telescopic mechanism is in the locked state, the telescopic mechanism and the pallet mechanism move between the extended posture and the concealed posture; when the telescopic mechanism is in the unlocked state, the pallet mechanism is driven to rotate by the telescopic mechanism, switching between the original posture and the flipped posture.

[0009] In a preferred embodiment of the present invention, the telescopic mechanism includes an upper member that slides with the guide mechanism and moves between the extended posture and the concealed posture under the constraint of the guide mechanism.

[0010] In a preferred embodiment of the present invention, the telescopic mechanism further includes:

[0011] The first lower component and the first upper component are rigidly connected.

[0012] A locking member is disposed between the first upper component and the first lower component. The locking mechanism slides with the first lower component, thereby achieving the switching between the locked state and the unlocked state through the irregular guide groove on the guide mechanism.

[0013] In a preferred embodiment of the present invention, the locking mechanism includes:

[0014] At least one locking pin, the locking pin being cylindrical, having a pair of parallel locking surfaces on its first segment, the locking surfaces forming an irregular circumferential surface of the first segment;

[0015] The guiding mechanism is provided with a pair of symmetrically distributed guide grooves. The guide grooves have guide groove walls and open ends that gradually open in a trumpet shape, formed by a first side wall and a second side wall. When the telescopic mechanism moves, the locking pin moves in the guide grooves accordingly.

[0016] When the locking pin is located in the guide groove, each locking surface contacts and limits the guide groove wall, and the locking mechanism is in a locked state.

[0017] When the locking pin is located at the open end, only one locking surface contacts the first sidewall, the locking pin has the ability to rotate, and the locking mechanism is in the unlocked state.

[0018] In a preferred embodiment of the present invention, the locking mechanism further includes:

[0019] At least one pair of longitudinal members that slide with the first lower member;

[0020] A transverse member connected to the motor via a first nut, the transverse member having a first stroke and a second stroke that move forward under the drive of the motor;

[0021] The transverse member and the longitudinal member are respectively provided with a driving rack and a driven rack on their opposite sides. The driving rack and the driven rack are driven by a transmission wheel at the top of the locking pin, so that when the transverse member moves forward, the longitudinal member tends to move in the opposite direction.

[0022] When the motor drives the telescopic mechanism to move along the guide groove, no gear transmission occurs between the transverse member and the longitudinal member due to the locking of the locking pin, and the transverse member completes the first segment of the stroke.

[0023] When the motor drives the telescopic mechanism to move along the guide groove and the locking pin enters the open end, the guide mechanism restricts the movement of the first upper component, and transmission occurs between the transverse component and the longitudinal component. The transverse component completes the second segment of the stroke, and the longitudinal component moves in the opposite direction.

[0024] In a preferred embodiment of the present invention, a pallet control gear is further included, which is rigidly connected to the pallet mechanism. The pallet control gear has a half-tooth ring that meshes with the pallet control rack at the end of the longitudinal member, so that the pallet mechanism rotates and unfolds to a flipped posture during the displacement transmission of the half-tooth ring and the pallet control rack.

[0025] In a preferred embodiment of the present invention, the first upper component is slidably connected to at least one first concave rail in the guide mechanism by at least one first convex rail, and the first concave rail is provided with a first convex rail stop, which limits the maximum stroke of the first convex rail.

[0026] In a preferred embodiment of the present invention, a second concave rail is provided on the first lower component, and the longitudinal component is slidably connected by being fitted into the second concave rail with a protruding ridge.

[0027] In a preferred embodiment of the present invention, the pallet mechanism is hinged to the front end of the telescopic mechanism via a shaft.

[0028] In a preferred embodiment of the present invention, the first upper member has an upper groove and a lower groove at the end adjacent to the pallet mechanism, the upper groove and the upper end of the pallet mechanism constituting a travel limit for its upward flipping, and the lower groove and the lower end constituting a travel limit for its downward flipping.

[0029] In a preferred embodiment of the present invention, the telescopic mechanism further includes:

[0030] The second lower component is a second upper component, and the second lower component and the second upper component are slidably connected.

[0031] The connecting rod is hinged to the second lower component and the pallet mechanism, and the connecting rod, the pallet mechanism, the second upper component and the second lower component constitute a multi-link mechanism.

[0032] In a preferred embodiment of the present invention, it further includes:

[0033] A retaining member is arranged between the second upper member and the second lower member, the retaining member keeping the pallet mechanism in its original position.

[0034] In a preferred embodiment of the present invention, the retaining member includes:

[0035] At least one first spring limiting part is provided on the second upper member;

[0036] At least one second spring limiting part is provided on the second lower member;

[0037] A spring is arranged between the first spring limiting part and the second spring limiting part. The spring causes the second upper member to always tend to move away from the second lower member, so that the pallet mechanism is always pulled up by the second upper member and maintains its original posture.

[0038] In a preferred embodiment of the present invention

[0039] The second lower component is provided with at least one stop portion. When the support plate mechanism is in its original position, the stop portion is located behind and in contact with the first spring limiting portion.

[0040] The guide unit is provided with at least one stop block. The stop block restricts the stroke of the second lower component by contacting the stop part, so that the second upper component and the second lower component are relatively displaced during the movement, pushing the pallet mechanism to rotate to the flipping posture.

[0041] In a preferred embodiment of the present invention, the second upper component is slidably connected to at least one inner slide rail of the guide mechanism via at least one outer slide rail.

[0042] In a preferred embodiment of the present invention, the second lower component is slidably connected to the second upper component via at least one third convex rail and at least one third concave rail.

[0043] In a preferred embodiment of the present invention, a second nut is provided on the second upper component, and the second nut and the motor constitute a lead screw motor structure.

[0044] In a preferred embodiment of the present invention, the pallet mechanism is hinged to the front end of the telescopic mechanism via a shaft.

[0045] Automobiles, including the aforementioned hidden telescopic brackets for in-vehicle multimedia equipment.

[0046] The beneficial effects of this invention are as follows:

[0047] The concealed telescopic bracket for in-vehicle multimedia devices provided by this invention

[0048] The first aspect is to lock the telescopic mechanism by means of the irregular surface mechanism between the locking pin and the guide groove, and to drive the flipping mechanism to flip by means of a gear transmission system, thereby realizing the conversion of the bracket between the hidden posture and the flipping posture by means of an electric drive system.

[0049] Secondly, a linkage mechanism consisting of a second upper component, a second lower component, a connecting rod, and a support plate mechanism, in conjunction with a limiting block set on the guide mechanism, enables the conversion of the support between a hidden posture and a flipped posture via an electric drive system. Attached Figure Description

[0050] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0051] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0052] Figure 2 This is an exploded view of the present invention.

[0053] Figure 3 This is a schematic diagram of the guiding mechanism of the present invention.

[0054] Figure 4 This is a schematic diagram of the telescopic mechanism and the pallet mechanism of the present invention.

[0055] Figure 5 This is the invention Figure 1 A sectional view.

[0056] Figure 6 This is an exploded view of the telescopic mechanism of the present invention.

[0057] Figure 7 This is an exploded view of the locking mechanism and the first lower component of the present invention.

[0058] Figure 8 This is a schematic diagram of the locking pin of the present invention.

[0059] Figure 9 This is a schematic diagram of the operation of the locking pin and the support plate control gear of the present invention.

[0060] Figure 10 This is an assembly diagram of the pallet control gear and pallet mechanism of the present invention.

[0061] Figure 11 This is a simplified diagram illustrating the working principle of the locking mechanism of the present invention.

[0062] Figure 12-A and Figure 12-B This is a schematic diagram of the transformation from a hidden posture to a flipped posture according to the present invention.

[0063] Figures 13-1A to 13-3C This is a schematic diagram of the transition from the hidden posture to the extended posture of the present invention.

[0064] Figure 14 This is a schematic diagram of the overall structure of the second embodiment of the present invention.

[0065] Figure 15 This is the invention Figure 14 Another side view.

[0066] Figure 16 This is a schematic diagram of the guide mechanism according to the second embodiment of the present invention.

[0067] Figure 17 The second embodiment of the invention is the explosion of the telescopic mechanism. Figure 1 .

[0068] Figure 18 This is the invention Figure 17 Another side view.

[0069] Figure 19 This is an assembly diagram of the telescopic mechanism and the pallet mechanism according to the second embodiment of the present invention.

[0070] Figure 20 This is the invention Figure 19 Another side view.

[0071] Figure 21 This is a schematic diagram illustrating the transition from a hidden posture to a flipped posture in the second embodiment of the present invention.

[0072] Figure 22 This is the invention Figure 21 A partial schematic diagram of the stop section in part A as it retracts from its flipped posture to its original posture. Detailed Implementation

[0073] In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. "Longitudinal (X-direction)," "lateral (Y-direction)," and "vertical (Z-direction)" are terms from the spatial coordinate system in the automotive field and are professional terms well known to those skilled in the art. The above description is for the purpose of simplifying the description of this invention and is not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0074] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature, but do not exclude the presence of one or more other features.

[0075] In the specification, when a component is described as being "on," "fixed" to, "connected" to, or "joined" to another component, the component may be directly located on, fixed to, connected to, joined to, or in contact with the other component, or there may be an intermediate component present. In the specification, the description of a feature being arranged "adjacent" to another feature may refer to a feature having a portion overlapping with the adjacent feature or a portion located above or below the adjacent feature.

[0076] It is understood that although the terms "first," "second," etc., may be used herein to describe different components, these components should not be limited by these terms. These terms are merely used to distinguish one component from another. Therefore, the first component can be referred to as the second component without departing from the teachings of this application.

[0077] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments. In all the drawings, the same reference numerals denote the same or functionally identical components.

[0078] refer to Figures 1 to 2 The multimedia device concealed telescopic bracket shown mainly includes: a guide mechanism 100, a telescopic mechanism 200, a tray mechanism 300, and a motor 1. The tray mechanism 300 and the telescopic mechanism 200 are hinged together, and the telescopic mechanism 200 is slidably fitted with the guide mechanism 100. The motor 1 drives the telescopic mechanism 200 to move, while the internal transmission structure of the telescopic mechanism 200 enables the rotation of the tray mechanism 300. A support lug 301 is provided on the upper surface of the tray mechanism 300, which supports the multimedia tablet device when the tray mechanism 300 is in an extended and flipped-over position.

[0079] refer to Figures 3 to 5The guide mechanism 100 has a receiving groove 110 at its bottom center along the Y direction. Two guide grooves 130 and two first concave rails 120 are sequentially formed on both sides of the receiving groove from near to far. The guide grooves 130 are irregularly shaped, with their open ends 132 being trumpet-shaped. They have a first sidewall 132a and a second sidewall 132b that form their gradually opening shape. The two guide grooves 130 are arranged symmetrically about the receiving groove 110. This special structure, in conjunction with the telescopic mechanism 200, enables the unlocking and locking functions of the invention. The telescopic mechanism 200 includes two first convex rails 212 on both sides and a first nut 202. The two first convex rails 212 are fixed to both sides of the first upper member 210 via connecting parts 211. The telescopic mechanism 200 and the guide mechanism 100 are slidably connected through the fitting between the first convex rails 212 and the first concave rails 120. The telescopic mechanism 200 includes a first upper component 210, a first lower component 260, and a locking mechanism 250 disposed between the two. The first nut 202 is connected to the locking mechanism 250, and the telescopic mechanism 200 is driven to move through the screw motor structure formed by the first nut 202 and the motor 1.

[0080] refer to Figure 6 and Figure 7 The internal structures of the telescopic mechanism 200 and locking mechanism 250 are shown. The locking mechanism 250 is slidably mounted between the first upper member 210 and the first lower member 260. The first upper member 210 and the first lower member 260 are fixed by fasteners. Second recessed rails 261 are provided on both sides of the bottom surface of the first lower member 260. The pallet mechanism 300 is hinged to the telescopic mechanism 200 at the first hinge point 201 via a shaft 255. A coil spring on the shaft 255 provides a certain counterforce during the rotation of the pallet mechanism 300, improving the operational feel. The locking mechanism 250 includes a transverse member 251, a longitudinal member 252, a locking pin 253, and a pallet control gear 254 (shown in subsequent figures). The locking pin 253 is fixed to the first lower member 260 and has a rotational degree of freedom about the Z direction. The longitudinal member 252 achieves a sliding connection between the longitudinal member 252 and the first lower member 261 by fitting the protruding ridge 252a at its bottom with the second concave rail 261.

[0081] refer to Figures 8 to 11The diagram shows the locking mechanism 250 and its working principle. The locking pin 253 is cylindrical in shape, and the transmission wheel 253d is horizontally arranged on top of the locking pin 253. The gear shaft of the transmission wheel 253d is coaxial with the Z-axis of the locking pin 253. The first segment 253b and the second segment 253a are the two relative positions of the lower part of the locking pin 253, with the first segment 253b located below the second segment 253a. A pair of parallel locking surfaces 253c are arranged on the first segment 253b, and the locking surfaces 253c are flat. The second segment 253a is provided with threads for engaging with the mounting nut. The longitudinal member 252 is long and narrow, with an upwardly extending support plate control rack 252c at one end and a driven rack 252b facing the transverse member 251 at the other end. A transverse member 251 is arranged between two longitudinal members 252, and both ends of the transverse member 251 also have drive racks 251a facing the longitudinal members 252. Two locking pins 253 are located at both ends of the transverse member 251, and the transmission between the transverse member 251 and the longitudinal member 252 is realized through the engagement of the transmission wheel 253d with the drive rack 251a and the driven rack 252b (the arrows in the figure illustrate the movement between the transmission wheel and the member). The pallet control rack 252c has a pallet control gear 254 that engages with it.

[0082] The first nut 202 is fixed to the bottom of the longitudinal member 251. The pallet control gear 254 is rigidly connected to the pallet mechanism 300 by inserting a non-circular gear shaft 254a into the gear connection hole 302. A semi-gear ring 254c is located on the circumference of the pallet control gear 254, which meshes with the pallet control rack 252c. With this structure, when the transverse member 251 moves forward to L1 under the drive of the screw motor structure, the locking pin 253 rotates, causing the longitudinal member 252 to move backward to L2. Under the pull of the pallet control rack 252c, the pallet control gear 254 rotates, causing the pallet mechanism 300 to rotate.

[0083] refer to Figure 12-A and Figure 12-B The first upper component 201 has an upper groove 213 and a lower groove 214 at one end of the first hinge point 201. When the pallet mechanism 300 is in its original position, its upper end 303 connects with the upper groove 213 to limit the upward flipping. When the pallet mechanism 300 is in the flipped position, its lower end 304 connects with the lower groove 214 to limit the downward flipping stroke.

[0084] refer to Figures 13-1A to 13-3C The diagram shown illustrates the invention from a concealed posture to an extended posture and finally to a flipped posture. Figure 13-1A , Figure 13-1B and Figure 13-1CThe image shows the concealed position, in which the second segment 253b of the locking pin 253 is inserted into the guide groove 130, and the locking surface 253c is in contact with the wall of the guide groove 130, thus locking the locking pin 253 and preventing it from rotating. Therefore, the telescopic mechanism 200 moves forward as a whole under the action of the locking mechanism 250. Figure 13-2A , Figure 13-2B and Figure 13-2C The diagram shows the extended posture. When the telescopic mechanism 200 continues to move until the first convex rail 212 contacts the first convex rail stop 121, the locking pin 253 moves synchronously to the open end 132 of the guide groove 130. Only one locking surface 253c of the second segment 253b contacts the first sidewall 132a of the open end 132, and the distance between the other locking surface 253c and the second sidewall 132b is greater than the maximum outer diameter of the second segment 253b. The locking mechanism 250 is then unlocked. The tray mechanism 300 is fully extended. The transverse member 251 in the telescopic mechanism 200 completes the first segment of its overall movement. Figure 13-3A , Figure 13-3B and Figure 13-3C The image shows the flipped state. The first upper component 210 is blocked by the first convex rail stop 121 and cannot move further. When the first nut 202 and the transverse component 251 continue to move forward to the second stage of their stroke under the drive of the motor 1, the locking surface 253c rotates relative to the first sidewall 132a. The rotation of the transmission wheel 253d drives the longitudinal component 252 to move in the opposite direction. The shaft 255 is hinged by passing through the pallet control gear 254, thus causing the pallet control gear 254 to mesh and rotate with the pallet control rack 252c during the reverse movement of the longitudinal component 252, causing the pallet mechanism 300 to flip.

[0085] refer to Figures 14 to 20The diagram illustrates the structure of the second embodiment of the present invention. The telescopic mechanism 200 is slidably connected to the inner slide rails 170 on the two inner sides of the guide mechanism 100 via the outer slide rails 222 on both outer sides of the second upper member 220. The telescopic mechanism 200 also includes a second lower member 270, which is slidably connected to the third concave rails 223 on both inner sides of the second upper member 220 via third convex rails 274 on both outer sides. The second spring limiting part 242, the first spring limiting part 243, and the spring 241 constitute a retaining member 240 arranged between the second upper member 220 and the second lower member 270. The second lower member 270 has two member openings 271. The second spring limiting part 242 is arranged at the X-direction front end of the member opening 271, and a stop part 272 is arranged at the rear end of the member opening 271. The first spring limiting part 243 is arranged on the bottom surface of the second upper member 220 and extends downwards. The first spring limiting part 243 is inserted into the component opening 271 from top to bottom, and the spring 241 is arranged between the first spring limiting part 243 and the second spring limiting part 242 to complete the assembly of the second upper component 220, the second lower component 270, and the retaining component 240. The retaining component 240 always applies a force to open in both directions in the X direction between the second upper component 220 and the second lower component 270, so that the first spring limiting part 243 is always kept in the position on the stop part 272 side of the component opening 271. The telescopic mechanism 200 is driven by a screw mechanism consisting of a second nut 203 provided on the second upper component 220 and a motor 1. Two stop blocks 162 with the same X-direction position are provided on the bottom of the guide mechanism 100. Similarly, the support plate mechanism 300 is hinged to the first hinge point 201 of the telescopic mechanism 200 by a shaft 255. The bottom of the pallet mechanism 300 is provided with a second hinge point 304, and the bottom of the second lower component 270 is provided with a third hinge point 273. The second hinge point 304 and the third hinge point 273 are hinged together by a connecting rod 256, thereby forming a multi-link structure composed of the connecting rod 256, the second lower component 270, the second upper component 220 and the pallet mechanism 300.

[0086] refer to Figure 21 and Figure 22 This diagram illustrates the transition between the concealed posture, the extended posture, and the flipped posture of the present invention in this embodiment. Driven by a motor, the second upper component 220 moves the second lower component 270 forward, the support plate mechanism 300 extends forward to the extended posture, the stop 272 contacts the stop block 162, and the telescopic mechanism 200 completes the first stage of the pushing stroke. Figure 21 As shown). The second upper component 220 continues to move forward and relative displacement occurs between it and the second lower component 270, the first hinge point 201 moves forward, completing the second stage of the pushing stroke (as shown). Figure 21(As shown). At this time, spring 241 is compressed, connecting rod 256 rotates around the third hinge point 273, and pallet mechanism 300 flips downward. When the second upper component 220 moves in the opposite direction, spring 241 returns to its original position, the first spring limiting part 243 contacts the stop part 272, and after the pallet mechanism 300 rotates back to its original position, it moves in the opposite direction together with telescopic mechanism 200 to retract to the hidden position.

Claims

1. A concealed telescopic bracket for in-vehicle multimedia equipment, wherein the concealed telescopic bracket for in-vehicle multimedia equipment is disposed inside an interior part of an automobile, and switches between an extended position and a concealed position via a sliding mechanism, characterized in that, include: A guiding mechanism, which forms the base for each moving part and is fixed inside the automotive interior parts; The telescopic mechanism, driven by a motor, moves together with the pallet mechanism based on the guide mechanism and switches between locked and unlocked states. The telescopic mechanism includes: an upper component that slides with the guide mechanism, a first lower component, the upper component being a first upper component, and a locking mechanism disposed between the first upper component and the first lower component. The locking mechanism slides with the first lower component to achieve the switching between a locked state and an unlocked state through the irregular guide groove on the guide mechanism. The locking mechanism includes: at least one locking pin, the locking pin having a pair of parallel locking surfaces, the locking surfaces forming an irregular surface in the circumferential direction of the locking pin; The guiding mechanism is provided with a pair of symmetrically distributed guide grooves. The guide grooves have guide groove walls and open ends that gradually open in a trumpet shape, formed by a first side wall and a second side wall. When the telescopic mechanism moves, the locking pin moves in the guide grooves accordingly. When the locking pin is located in the guide groove, each locking surface contacts and limits the guide groove wall, and the locking mechanism is in a locked state. When the locking pin is located at the open end, only one locking surface contacts the first sidewall, the locking pin has the ability to rotate, and the locking mechanism is in the unlocked state. When the telescopic mechanism is in the locked state, the telescopic mechanism and the pallet mechanism move between the extended posture and the concealed posture; when the telescopic mechanism is in the unlocked state, the pallet mechanism is driven to rotate by the telescopic mechanism, switching between the original posture and the flipped posture.

2. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 1, characterized in that, The upper component moves and switches between the extended posture and the concealed posture under the restriction of the guide mechanism.

3. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 2, characterized in that, The telescopic mechanism further includes: The first lower component and the first upper component are rigidly connected.

4. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 3, characterized in that, The locking pin is cylindrical.

5. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 4, characterized in that, The locking mechanism also includes: The first segment and the second segment are the two relative positions of the lower part of the locking pin; The first segment has a pair of parallel locking surfaces, which form an irregular surface in the circumferential direction of the first segment; The second section is provided with threads for engaging with the mounting nut, and the first section is located below the second section; The drive wheel is arranged on top of the locking pin, and the gear shaft of the drive wheel is coaxial with the Z-axis of the locking pin.

6. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 5, characterized in that, The locking mechanism also includes: At least one pair of longitudinal members that slide with the first lower member; A transverse member connected to the motor via a first nut, the transverse member having a first stroke and a second stroke that move forward under the drive of the motor; The transverse member and the longitudinal member are respectively provided with a driving rack and a driven rack on their opposite sides. The driving rack and the driven rack are driven by a transmission wheel at the top of the locking pin, so that when the transverse member moves forward, the longitudinal member tends to move in the opposite direction. When the motor drives the telescopic mechanism to move along the guide groove, no gear transmission occurs between the transverse member and the longitudinal member due to the locking of the locking pin, and the transverse member completes the first segment of the stroke. When the motor drives the telescopic mechanism to move along the guide groove and the locking pin enters the open end, the guide mechanism restricts the movement of the first upper component, and transmission occurs between the transverse component and the longitudinal component. The transverse component completes the second segment of the stroke, and the longitudinal component moves in the opposite direction.

7. The concealed telescopic bracket for in-vehicle multimedia equipment as described in claim 6, characterized in that, It also includes a pallet control gear rigidly connected to the pallet mechanism. The pallet control gear has a half-tooth ring that meshes with the pallet control rack at the end of the longitudinal member, so that the pallet mechanism rotates and unfolds to a flipped posture during the displacement transmission of the half-tooth ring and the pallet control rack.

8. The concealed telescopic bracket for in-vehicle multimedia equipment as described in any one of claims 1 to 7, characterized in that, The first upper component is slidably connected to at least one first concave rail in the guide mechanism through at least one first convex rail. The first concave rail is provided with a first convex rail stop, which limits the maximum stroke of the first convex rail.

9. The concealed telescopic bracket for in-vehicle multimedia equipment as described in any one of claims 6 to 7, characterized in that, The first lower component is provided with a second concave rail, and the longitudinal component is slidably connected by being fitted into the second concave rail with a protruding ridge.

10. The concealed telescopic bracket for in-vehicle multimedia equipment as described in any one of claims 1 to 7, characterized in that, The pallet mechanism is hinged to the front end of the telescopic mechanism via a shaft.

11. The concealed telescopic bracket for in-vehicle multimedia equipment as described in any one of claims 1 to 7, characterized in that, The first upper component has an upper groove and a lower groove at the end adjacent to the pallet mechanism. The upper groove and the upper end of the pallet mechanism constitute a travel limit for its upward flipping, and the lower groove and the lower end constitute a travel limit for its downward flipping.

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