Fixing frame for portable vehicle-mounted projector

Abstract

The utility model discloses a fixing frame for a portable vehicle-mounted projector, the fixing frame comprises an expansion table and a base used for installing the projector, the expansion table is connected with the base, two opposite sides of the upper end of the expansion table are respectively provided with a sliding groove, each sliding groove is respectively connected with an expansion arm in a sliding mode, and the expansion arms are connected with the expansion table in a sliding mode. And the other end of each expansion arm is rotatably connected with a connecting structure which is used for being connected with a headrest of the rear row seat of the vehicle and the headrest clamping rod. And a locking mechanism is arranged between the expansion table and the expansion arm. When the projector is fixedly connected to the base, the base is arranged between the two automobile headrests, the locking mechanism is unlocked, and the position of the expansion arm in the sliding groove and the angle of the expansion arm relative to the sliding groove are adjusted so that the connecting structure can be connected with the corresponding automobile rear-row seat headrests, and therefore the projector is suitable for various automobile types with different automobile widths. And the front-back position of the projector can be adjusted according to needs, so that the practicability and portability of the fixing frame are greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicle-mounted product fixing devices, in particular to a fixing frame for a portable vehicle-mounted projector. Background Art

[0002] With the rapid development of automotive technology, in-car projectors, as an emerging in-car entertainment device, are gaining popularity in the market. They not only provide passengers with a large-screen viewing experience but can also serve as a projection source for ambient lighting or transparent windows in specific situations, enhancing the in-car entertainment and sense of technology.

[0003] The Chinese utility model patent with publication number CN217022387U discloses a vehicle-mounted projector bracket, which includes: a vehicle-mounted projector bracket, including a bracket, a first hole position provided on the top surface of the bracket, and a second hole position provided on the bottom surface of the bracket; a projection connection assembly, including a projector connector corresponding to the top surface of the bracket, a sphere installed in the inner cavity of the projector connector, a threaded platform connected to the top surface of the sphere, a locking knob installed on the side of the projector connector, a threaded hole provided on the bottom surface of the projector connector, and a threaded head that sequentially passes through the threaded hole and the first hole position; a locking assembly, including an externally threaded barrel that partially passes through the second hole position, a hexagonal blocking piece fixed in the middle position of the externally threaded barrel, a rubber strip connected to the bottom surface of the externally threaded barrel, a nut connected to the top surface of the externally threaded barrel, and an internally threaded barrel connected to the bottom surface of the externally threaded barrel. However, the same vehicle-mounted projector bracket mentioned above has the problem of not being able to match both the front and rear seats of a car at the same time, or not being able to match models with different vehicle widths.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to ordinary technicians in this field. Utility Model Content

[0005] Purpose of the utility model: The technical problem to be solved by the utility model is to provide a fixing bracket for a portable vehicle-mounted projector in view of the shortcomings of the existing technology, which can match vehicle models with different widths.

[0006] To address the aforementioned technical issues, the present invention discloses a mounting bracket for a portable vehicle-mounted projector. The bracket comprises an expansion platform and a base for mounting the projector. The expansion platform is connected to the base. Slide slots are defined on opposite sides of the upper end of the expansion platform. Each of the slide slots is slidably connected to an expansion arm. The other end of each expansion arm is rotatably connected to a connecting structure for connecting to a vehicle's rear seat headrest and a headrest clamping rod. A locking mechanism is provided between the expansion platform and the expansion arm.

[0007] Specifically, it comprises a main shaft, and the expansion platform is hinged to the base through the main shaft.

[0008] Specifically, a plurality of threaded holes are evenly formed on the base, and the threaded holes are used for fixed connection with the projector.

[0009] Specifically, the locking mechanism includes a plug-in, a second socket provided on the extension arm, and a first socket provided on the extension platform. The first sockets are provided in plurality and are distributed along the sliding direction of the extension arm in the slide groove. When the positions of the first socket and the second socket correspond to each other and the plug-in is inserted into the second socket and the first socket, the extension platform is fixedly connected to the extension arm.

[0010] Specifically, the expansion platform includes an upper platform, a lower platform, and a connecting shaft. The upper platform and the lower platform are spaced apart in the vertical direction, and the middle portion of the upper platform is connected to the middle portion of the lower platform via the connecting shaft. The upper and lower platforms are both arranged in a diamond shape, and their vertical projections overlap. The chute passes through the upper and lower platforms and extends along the diagonal of the upper platform. The outer periphery of each chute is provided with the first insertion hole.

[0011] Specifically, the expansion arm includes a first hollow cylinder and a second hollow cylinder respectively located at both ends, and a connecting portion connecting the first hollow cylinder and the second hollow cylinder, the connecting portion is arranged in a long tubular shape, and the central axis of the first hollow cylinder and the central axis of the second hollow cylinder are both arranged parallel to the central axis of the first socket. The second socket is opened at the circumference of the circular through hole of the first hollow cylinder. A spring is arranged inside the first hollow cylinder, and the expansion and contraction direction of the spring is arranged along the central axis of the first hollow cylinder. The middle part of the spring is fixedly connected to the expansion arm, and both ends of the spring are fixedly connected to a sliding shaft, and the sliding shaft extends out of the hollow cylinder under the elastic force of the spring and is inserted into the corresponding sliding groove and is slidably connected to the sliding groove.

[0012] Specifically, the height of the first hollow cylinder is consistent with the distance between the upper platform and the lower platform.

[0013] Specifically, the connection structure includes a connecting member rotatably connected to the expansion arm. A first clamping arm and a second clamping arm are slidably disposed on either side of the connecting member, respectively, with the first clamping arm and the second clamping arm being symmetrically disposed. An adjustment mechanism is installed within the connecting member, the adjustment mechanism being used to enable the first clamping arm and the second clamping arm to slide relative to each other.

[0014] Specifically, it comprises a main fixing part and a secondary fixing part for rotatably connecting the connecting part and the expansion arm. The secondary fixing part is arranged as a T-shaped circular shaft, and the main fixing part and the secondary fixing part are arranged in a nested manner.

[0015] Specifically, the adjustment mechanism includes a worm gear, a worm engaged with the worm gear, a gear connected to the worm gear, and a first rack and a second rack. The worm gear, worm gear, and gear are all rotatably mounted to the connecting member. The first rack is fixedly mounted to the first clamping arm, and the second rack is fixedly mounted to the second clamping arm. The first rack and the second rack respectively engage with the gears. Rotating the worm gear drives the worm gear, which in turn drives the gears. The gears drive the first rack and the second rack to move toward or away from each other, thereby causing the first and second clamping arms to slide relative to each other.

[0016] Beneficial effects:

[0017] 1. The portable vehicle-mounted projector fixing bracket provided by the present invention, when the projector is fixedly connected to the base, the base is set in the middle position of the two car headrests, the locking mechanism is unlocked, and the position of the extension arm in the slide groove and the angle of the extension arm relative to the slide groove are adjusted so that the two extension arms are opened enough to connect the connecting structure with the corresponding vehicle rear seat headrest and the headrest clamping rod. After the connecting structure is connected to the corresponding vehicle rear seat headrest and the headrest clamping rod, the position of the extension arm in the slide groove is locked by the locking mechanism. Therefore, the present invention is applicable to a variety of vehicle models with different vehicle widths. In addition, when the connecting structure is connected to the corresponding vehicle rear seat headrest and the headrest clamping rod, by swinging the extension arm and adjusting the angle of the extension arm, the front and rear positions of the base and the extension table can also be adjusted, which greatly improves the practicality of the fixing bracket.

[0018] 2. The connection structure adopted by the present invention can adjust the distance between the first clamping arm and the second clamping arm for holding the headrest through the adjustment structure, so that the connection structure can be fixed on headrests of different sizes, further improving the applicability of the fixing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above and / or other advantages of the present invention will become more apparent.

[0020] Figure 1 This is a three-dimensional structural diagram of a fixing bracket for a portable vehicle-mounted projector provided by one embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 An exploded view of a mounting bracket for a portable vehicle-mounted projector is shown.

[0022] Figure 3 yes Figure 1 The figure shows a cross-sectional structural diagram of the connection structure in the fixing bracket for the portable vehicle-mounted projector.

[0023] The accompanying drawings are marked as follows: 10, base; 11, main shaft; 12, extension platform; 121, first socket; 122, upper platform; 123, lower platform; 124, connecting shaft; 13, extension arm; 131, second socket; 132, first hollow cylinder; 133, second hollow cylinder; 134, connecting part; 135, sliding shaft; 136, fourth socket; 14, plug-in; 15, slide groove; 2, connecting structure; 20, connecting part; 201, third socket; 202, bending plate; 203, straight plate; 211, first clamping arm; 212, second clamping arm; 22, main fixing part; 23, auxiliary fixing part; 24, adjusting mechanism; 241, worm gear; 242, worm; 243, gear; 244, first rack; 245, second rack. DETAILED DESCRIPTION

[0024] The utility model provides a fixing frame for a portable vehicle-mounted projector. The fixing frame can adjust the position of the projector frontward and rearward.

[0025] See also Figures 1 to 3 The mounting bracket includes an expansion platform 12 and a base 10 for mounting the projector. The expansion platform 12 is connected to the base 10. Slide slots 15 are defined on opposite sides of the top of the expansion platform 12. Each slide slot 15 is slidably connected to an expansion arm 13. The other end of each expansion arm 13 is rotatably connected to a connecting structure 2 for connecting to a rear seat headrest and a headrest clamping rod. A locking mechanism is provided between the expansion platform 12 and the expansion arm 13.

[0026] It should be noted that when the projector is fixedly connected to the base 10, which is positioned between two vehicle headrests, the locking mechanism is unlocked, allowing the extension arms 13 to slide freely within the slide slots 15. The two extension arms 13 are then opened sufficiently to connect the connecting structure 2 to the corresponding vehicle rear seat headrests and headrest coupling rods. After the connecting structure 2 is connected to the corresponding vehicle rear seat headrests and headrest coupling rods, the locking mechanism locks the extension arms 13 in place within the slide slots 15. Therefore, the present invention is applicable to a variety of vehicle widths.

[0027] Furthermore, by simultaneously adjusting the position of the extension arms 13 to both sides, the base 10 can be consistently positioned in the center, thereby ensuring the projector is always positioned in the center of the vehicle compartment. Furthermore, when the connecting structure 2 is connected to the corresponding vehicle rear seat headrest and headrest clamping rod, the fore-and-aft position of the base 10 and extension platform 12 can be adjusted by swinging the extension arms 13 and adjusting their angle, greatly improving the practicality of the mounting bracket.

[0028] Specifically, see Figure 1 The fixing frame includes a main shaft 11, and the expansion platform 12 is hinged to the base 10 through the main shaft 11. In a specific embodiment, the upper part of the main shaft 11 is fixedly connected to the expansion platform 12, and the lower part is hinged to the base 10.

[0029] Specifically, see Figure 1 A plurality of threaded holes are evenly arranged on the base 10, and the threaded holes are used for fixed connection with the projector.

[0030] Specifically, see Figure 1 and Figure 2 The locking mechanism includes a plug-in 14, a second socket 131 provided on the extension arm 13, and a first socket 121 provided on the extension platform 12. The first socket 121 is provided with a plurality of sockets and is distributed along the sliding direction of the extension arm 13 in the slide groove 15. When the first socket 121 and the second socket 131 correspond in position and the plug-in 14 is inserted into the second socket 131 and the first socket 121, the extension platform 12 is fixedly connected to the extension arm 13.

[0031] Specifically, see Figure 1 and Figure 2 The expansion platform 12 includes an upper platform 122 and a lower platform 123 spaced apart in the vertical direction. The middle portion of the upper platform 122 is connected to the middle portion of the lower platform 123 via a connecting shaft 124. The upper platform 122 and the lower platform 123 are both arranged in a diamond shape, and their vertical projections overlap. A chute 15 runs through the upper platform 122 and the lower platform 123. The chute 15 extends along the diagonal line of the upper platform 122. The outer periphery of the chute 15 is formed with a first insertion hole 121.

[0032] Specifically, see Figure 1 and Figure 2 The extension arm 13 includes a first hollow cylinder 131 and a second hollow cylinder 132 located at both ends, and a connecting portion 134 connecting the first hollow cylinder 131 and the second hollow cylinder 132. The connecting portion 134 is arranged in a long tubular shape, and the central axis of the first hollow cylinder 131 and the central axis of the second hollow cylinder 132 are both arranged parallel to the central axis of the first insertion hole 121. The second insertion hole 131 is opened at the circumference of the circular through hole of the first hollow cylinder 131. A spring is arranged inside the first hollow cylinder 131, and the expansion and contraction direction of the spring is arranged along the central axis of the first hollow cylinder 131. The middle part of the spring is fixedly connected to the extension arm 13, and both ends of the spring are fixedly connected to a sliding shaft 135. Under the elastic force of the spring, the sliding shaft 135 extends out of the hollow cylinder 132 and inserts into the corresponding slide groove 15 and is slidably connected to the slide groove 15.

[0033] During installation, the slide shaft 135 is pressed and retracted into the first hollow cylinder 131. The first hollow cylinder 131 is then inserted into the space between the upper and lower platforms 122, 123 of the expansion platform 12. The slide shaft 135, under the elastic force of the spring, returns to its original position and extends into the chute 15, where it slides into engagement with the chute 15. As the slide shaft 135 moves within the chute 15, the second receptacle 131 of the first hollow cylinder 131 can be aligned with the first receptacle 121 at various locations on the expansion platform 12, and then secured by the insert 14.

[0034] Specifically, see Figure 1 and Figure 2 , the height of the first hollow cylinder 131 is consistent with the distance between the upper platform 122 and the lower platform 123.

[0035] Specifically, the plug-in 14 includes an end plate and a plug shaft fixedly connected to the end plate, and the plug shaft is used to be inserted into the first socket 121 and the second socket 131 to connect and fix the expansion platform 12 and the expansion arm 13. More specifically, the end plate is arranged in a circular plate shape, and the plug shaft is evenly arranged on the circumference of the end plate.

[0036] Specifically, see Figure 2 and Figure 3 The connecting structure 2 includes a connecting member 20, which is rotatably connected to the extension arm 13. A first clamping arm 211 and a second clamping arm 212 are slidably disposed on either side of the connecting member 20. The first clamping arm 211 and the second clamping arm 212 are symmetrically disposed. An adjustment mechanism 24 is mounted within the connecting member 20. The adjustment mechanism 24 is used to cause the first clamping arm 211 and the second clamping arm 212 to slide relative to each other to adjust the distance between them to hold the headrest.

[0037] Specifically, see Figure 2 The fixing frame includes a main fixing member 22 and a secondary fixing member 23 for fixing the connecting member 20 to the expansion arm 13. The secondary fixing member 23 is set as a T-shaped circular axis, and the main fixing member 22 and the secondary fixing member 23 are nested.

[0038] In a preferred embodiment of the present invention, the main fixing member 22 is similar in structure to the plug-in 14. Figure 2 A third socket 201 is provided on the connecting member 20, and a fourth socket 136 is provided on the outer circumference of the circular hole of the second hollow cylinder 132. The main fixing member 22 and the auxiliary fixing member 23 connect and fix the connecting member 20 and the extension arm 13 through the third socket 201 and the fourth socket 136 on the second hollow cylinder 132.

[0039] More specifically, see Figure 2 and Figure 3The connector 20 is designed in the shape of an isosceles triangle, consisting of a bent plate 202 and a straight plate 203 fixedly connected. The straight plate 203 is hollow, and the adjustment mechanism 24 is located in the hollow of the straight plate 203. The bent plate 202 has a 60° corner, and the upper and lower endpoints of the corner are arranged in a circular ring structure. An arc-shaped groove is provided between the two circular ring structures, and the second hollow cylinder 132 can be inserted into the arc-shaped groove. The third jacks 201 are evenly distributed on the circular ring structure, and the hollow part of the circular ring structure can be aligned with the hollow part of the second hollow cylinder 132.

[0040] During installation, the second hollow cylinder 132 of the extension arm 13 is directly placed between the two annular structures, and the secondary fixing member 23 is then inserted into the hollow portion of the annular structure, so that a pre-fixed connection is formed between the connecting member 20 and the extension arm 13. At this time, the extension arm 13 can still rotate. The extension arm 13 is rotated to the extension platform 12, and the sliding shaft 135 is pressed so that the sliding shaft 135 enters the sliding groove 15. The plug-in 14 and the main fixing member 22 are then inserted to complete the fixation. When the position needs to be adjusted, the plug-in 14 and the main fixing member 22 are removed, so that the extension arm 13 rotates around the secondary fixing member 23 while the extension arm 13 moves within the sliding groove 15. The projector is then adjusted to the desired position, and the plug-in 14 and the main fixing member 22 are then inserted.

[0041] Specifically, see Figure 2 and Figure 3 The adjustment mechanism 24 includes a worm gear 241, a worm 242 meshing with the worm gear 241, a gear 243 drivingly connected to the worm gear 241, a first rack 244, and a second rack 245. The worm gear 241, worm 242, and gear 243 are all rotatably mounted on the connecting member 20. The first rack 244 is fixedly mounted to the first clamping arm 211, and the second rack 245 is fixedly mounted to the second clamping arm 212. The first rack 244 meshes with the upper end of the gear 243, and the second rack 245 meshes with the lower end of the gear 243. In a specific embodiment, the worm gear 241 and gear 243 are coaxially connected.

[0042] Specifically, see Figure 1 The vertical cross-sections of the first clamping arm 211 and the second clamping arm 212 are hook-shaped as a whole, and arc-shaped extension plates are provided on their outer sides, so that the headrest can be embraced from the bottom and both sides during the fixing process.

[0043] During installation, the worm gear 241 is driven to rotate by rotating the worm gear 242, and since the worm gear 241 is engaged with the gear 243, the gear 243 is driven to rotate. The gear 243 drives the first rack 244 and the second rack 245 to move toward or away from each other, thereby driving the first clamping arm 211 and the second clamping arm 212 to slide relative to each other and adjust the distance between them. When the two are opened wider, the hook structures at the bottom of the first clamping arm 211 and the second clamping arm 212 are placed on the outside of the clamping shaft that connects the bottom of the headrest and the seat, and the worm gear 242 is rotated again to shrink the distance between them, so that the hook structures at the bottom of the two are stuck on the outside of the clamping shaft. At the same time, the arc-shaped extension plate on the outer side of the upper part of the hook structures at the bottom of the two is stuck on the headrest, thereby fixing the whole to the headrest.

[0044] This utility model provides a concept and method for a portable vehicle-mounted projector mounting bracket. There are many methods and approaches to implement this technical solution. The above is only a preferred embodiment of the utility model. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the utility model, and such improvements and modifications should also be considered within the scope of protection of the utility model. Any components not specified in this embodiment may be implemented using existing technologies.

Claims

1. A fixing bracket for a portable vehicle-mounted projector, characterized in that: The invention comprises an expansion platform (12) and a base (10) for installing a projector, wherein the expansion platform (12) is connected to the base (10), and a slide groove (15) is respectively provided on two opposite sides of the upper end of the expansion platform (12), and each of the slide grooves (15) is respectively slidably connected to an expansion arm (13), and the other end of each expansion arm (13) is rotatably connected to a connection structure (2) for connecting to a headrest of a rear seat of a vehicle and a headrest clamping rod; and a locking mechanism is provided between the expansion platform (12) and the expansion arm (13).

2. The fixing bracket for a portable vehicle-mounted projector according to claim 1, wherein: It comprises a main shaft (11), and the expansion platform (12) is hinged to the base (10) via the main shaft (11).

3. The fixing bracket for a portable vehicle-mounted projector according to claim 1, wherein: The base (10) is evenly provided with a plurality of threaded holes, and the threaded holes are used for fixed connection with the projector.

4. The fixing bracket for a portable vehicle-mounted projector according to claim 1, wherein: The locking mechanism comprises a plug-in (14), a second plug-in hole (131) provided on the expansion arm (13), and a first plug-in hole (121) provided on the expansion platform (12); a plurality of the first plug-in holes (121) are provided and distributed along the sliding direction of the expansion arm (13) in the slide groove (15); when the first plug-in hole (121) corresponds to the second plug-in hole (131) and the plug-in (14) is inserted into the second plug-in hole (131) and the first plug-in hole (121), the expansion platform (12) is fixedly connected to the expansion arm (13).

5. The fixing bracket for the portable vehicle-mounted projector according to claim 4, characterized in that: The expansion platform (12) comprises an upper platform (122), a lower platform (123) and a connecting shaft (124); the upper platform (122) and the lower platform (123) are spaced apart in the vertical direction; the middle portion of the upper platform (122) is connected to the middle portion of the lower platform (123) via the connecting shaft (124); the upper platform (122) and the lower platform (123) are both arranged in a rhombus shape and their projection areas in the vertical direction overlap; the chute (15) passes through the upper platform (122) and the lower platform (123) and the chute (15) is extended along the diagonal line of the upper platform (122); and the outer peripheral portion of the chute (15) is provided with the first plug hole (121).

6. The fixing bracket for the portable vehicle-mounted projector according to claim 5, characterized in that: The expansion arm (13) comprises a first hollow cylinder (132) and a second hollow cylinder (133) respectively located at two ends, and a connecting portion (134) connecting the first hollow cylinder (132) and the second hollow cylinder (133); the connecting portion (134) is arranged in a long tubular shape; the central axis of the first hollow cylinder (132) and the central axis of the second hollow cylinder (133) are both arranged parallel to the central axis of the first insertion hole (121); the second insertion hole (131) is opened at At the circumference of the circular through hole of the first hollow cylinder (132); a spring is arranged inside the first hollow cylinder (132), and the expansion and contraction direction of the spring is arranged along the central axis of the first hollow cylinder (132); the middle part of the spring is fixedly connected to the expansion arm (13), and both ends of the spring are fixedly connected to a sliding shaft (135), and the sliding shaft (135) extends out of the hollow cylinder (132) under the elastic force of the spring and is inserted into the corresponding sliding groove (15) and is slidably connected to the sliding groove (15).

7. The fixing bracket for the portable vehicle-mounted projector according to claim 6, wherein: The height of the first hollow cylinder (132) is consistent with the distance between the upper platform (122) and the lower platform (123).

8. The fixing bracket for a portable vehicle-mounted projector according to claim 1, wherein: The connecting structure (2) comprises a connecting member (20), wherein the connecting member (20) is rotatably connected to the expansion arm (13); a first clamping arm (211) and a second clamping arm (212) are respectively slidably arranged on both sides of the connecting member (20), and the first clamping arm (211) and the second clamping arm (212) are symmetrically arranged; an adjusting mechanism (24) is installed in the connecting member (20), and the adjusting mechanism (24) is used to make the first clamping arm (211) and the second clamping arm (212) slide relative to each other.

9. The fixing bracket for the portable vehicle-mounted projector according to claim 8, characterized in that: The invention comprises a main fixing member (22) and a secondary fixing member (23) for rotatably connecting the connecting member (20) and the expansion arm (13); the secondary fixing member (23) is arranged in a T-shaped circular shaft; and the main fixing member (22) and the secondary fixing member (23) are arranged in a nested manner.

10. The fixing bracket for the portable vehicle-mounted projector according to claim 9, characterized in that: The adjusting mechanism (24) comprises a worm gear (241), a worm (242) meshing with the worm gear (241), a gear (243) connected to the worm gear (241), a first rack (244) and a second rack (245); the worm gear (241), the worm (242) and the gear (243) are all rotatably mounted on the connecting member (20); the first rack (244) is fixedly mounted on the first clamping arm (211), and the second rack (245) is fixedly mounted on the first clamping arm (211). (245) is fixedly mounted on the second clamping arm (212), and the first rack (244) and the second rack (245) are respectively engaged with the gear (243); by rotating the worm (242), the worm wheel (241) is driven to rotate, thereby driving the gear (243) to rotate, and the gear (243) drives the first rack (244) and the second rack (245) to move toward or away from each other, thereby driving the first clamping arm (211) and the second clamping arm (212) to slide relative to each other.

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