A synchronous belt driven vehicle antenna lodging mechanism

Abstract

The present invention provides a synchronous belt-driven vehicle-mounted antenna retracting mechanism, the retracting mechanism mainly comprises a housing, a worm gear assembly, a motor assembly, a first synchronous belt assembly and a supporting mechanism, wherein the first synchronous belt assembly is respectively connected to the motor assembly and the worm gear assembly, and transmits the output torque of the motor assembly to the worm gear assembly, and the worm gear assembly is connected to the supporting mechanism, thereby driving the supporting mechanism supporting the antenna to rotate. The synchronous belt-driven vehicle-mounted antenna retracting mechanism of the present invention utilizes a combination of a worm gear and a synchronous belt to achieve an ingenious and compact overall product layout.

Description

Technical Field

[0001] The invention relates to the technical field of communication equipment, and in particular to a synchronous belt-driven vehicle-mounted antenna lodging mechanism. Background Art

[0002] The launch vehicle relies on the vehicle-mounted antenna to communicate with the outside world. In order to ensure that the communication signal is not interfered by the external environment, the antenna needs to be electrically or manually controlled to stay and maintain at any position of 0° to 90° (relative to the horizontal). Currently, there are spur gears, bevel gears, screw nuts and other transmission methods on the market to cooperate with the reducer box to achieve the position control of the vehicle-mounted antenna, but these mechanisms generally have the problems of high cost, high noise, easy wear and tear due to frequent use, and reduced accuracy, and complex maintenance. Summary of the invention

[0003] In view of the above-mentioned improvement requirements of the prior art, the present invention provides a vehicle-mounted antenna falling mechanism driven by a synchronous belt.

[0004] Specifically, the technical solution of the present invention is:

[0005] The utility model discloses a synchronous belt driven vehicle-mounted antenna falling mechanism, which is divided into two parts, an electric part and a manual part.

[0006] Specifically, a synchronous belt-driven vehicle antenna retracting mechanism, wherein the electric part is composed of a housing, a worm gear assembly, a motor assembly, a first synchronous belt assembly and a supporting mechanism. The first synchronous belt assembly is respectively connected to the motor assembly and the worm gear assembly to transmit the output torque of the motor assembly to the worm gear assembly, and the worm gear assembly is connected to the supporting mechanism, thereby driving the supporting mechanism supporting the antenna to rotate.

[0007] Furthermore, the synchronous belt driven vehicle-mounted antenna retracting mechanism of the present invention including the manual part also includes a second synchronous belt assembly and a handle shaft assembly. Similarly, the second synchronous belt assembly is respectively connected to the handle shaft assembly and the worm gear assembly, and the output torque of the handle shaft assembly is transmitted to the worm gear assembly to realize manual control of the antenna.

[0008] Among them, the box body is divided into two chambers, which are separated by a partition.

[0009] The motor assembly and the worm gear assembly are arranged in the right (first) chamber of the box. The motor assembly is connected / fixed to the middle partition of the box through the motor transition plate; the worm (shaft) of the worm gear assembly is arranged orthogonally (perpendicularly) to the worm shaft, and the front and rear walls of the box are used to support the worm shaft system, and the right wall and the middle partition are used to support the worm shaft system. The motor assembly and the worm are arranged in parallel, and the electric output end of the motor and the input end of the worm extend through the partition to the left (second) chamber of the box, and are respectively connected to the first and / or second synchronous belt assembly.

[0010] Two sets of synchronous belt assemblies are arranged in the left (second) chamber of the box body, and a handle shaft assembly is arranged at the far end relative to the right chamber. The handle shaft of the handle shaft assembly is arranged in parallel with the worm, and the second synchronous belt assembly is respectively connected to the output end of the handle shaft assembly and the input end of the worm. Generally, each synchronous belt assembly consists of a synchronous belt and two synchronous wheels, which are respectively connected to the shafts of the corresponding input end and output end, and mesh with the synchronous belt to form a synchronous transmission. The left chamber also has a rear cover that can be opened and closed for installation and maintenance.

[0011] The output end of the worm gear shaft is connected to the support mechanism, and the lodging function is finally realized by controlling its rotation. Preferably, the part of the worm gear shaft extending out of the box body is connected to the support mechanism outside the box body, and the connection here is preferably a simple shaft hole positioning and a screw clamping connection. The end of the output shaft is set as a flat shaft with a rectangular cross-section, which cooperates with the flat hole on the support mechanism and is positioned with each other. The hole of the support mechanism opens a clamping groove, and the clamping groove is deformed by tightening the screw, thereby clamping the output shaft. Preferably, a support mechanism is connected to each end of the output shaft, and the two support mechanisms are correspondingly connected and support the antenna.

[0012] Furthermore, the output end of the worm gear shaft controls the rotation of the support mechanism / antenna through the following components: Preferably, a limit block is provided on the worm gear shaft at the connection between one side of the worm gear shaft and the box body, and the limit block cooperates with the bump block and the switch assembly (including the switch bracket and the switch) provided on the box body (preferably, the inner wall) to achieve limit, so that the support mechanism at the end of the transmission chain drives the antenna to achieve (relative to the horizontal) 0° to +90° rotation. The contact limit between the limit block and the switch assembly realizes the electrical limit, and when the limit switch fails, the contact limit between the limit block and the bump block realizes the mechanical limit.

[0013] The number of switches and bumpers are 2, distributed on both sides at two extreme positions of about 45° to the horizontal. Preferably, the switch bracket is installed using an elliptical hole, and the switch is observed and installed on the switch bracket in the reverse direction toward the inside of the box body using two fan-shaped windows opened above the bearing hole of the worm shaft on the box body (later covered by the large bearing cover of the worm gear). During installation, the position of the switch bracket is fine-tuned using the elliptical hole so that the position of the switch contact is exactly at the ±45° extreme position, achieving an accuracy of 0° to 90° of the support mechanism relative to the vertical tilt angle when touched.

[0014] Furthermore, the output end of the motor assembly is connected to the first synchronous belt assembly with a speed ratio of 2: 1. The first synchronous belt assembly transmits the torque to the worm of the worm gear assembly with a speed ratio of 50: 1, and finally drives the support mechanism to rotate.

[0015] Furthermore, the tensioning structures of the two sets of synchronous belts are respectively designed at the connection between the motor assembly and the housing and at the connection between the handle shaft assembly and the housing. The mounting hole of the motor transition plate that fixes the motor assembly is designed as an oblong hole, and the motor installation fixing position is fine-tuned through the oblong hole, which drives the position change of the first synchronous belt, thereby realizing the tensioning and installation of the first synchronous belt. Similarly, the bearing seat mounting hole of the handle shaft assembly is also designed as an oblong hole, which drives the tensioning of the second synchronous belt while fixing the handle shaft assembly, thereby realizing the tensioning installation of the second synchronous belt.

[0016] Furthermore, the handle shaft assembly is mounted on the inner wall of the box body, and is composed of a handle shaft, a handle shaft bearing seat, a handle shaft bearing, and a handle shaft bearing gland. Cantilever support of the handle shaft and the second synchronous belt / wheel connected thereto can be achieved. The handle shaft portion extends out of the box body wall for external connection to the handle.

[0017] The beneficial effects of the present invention are:

[0018] The synchronous belt driven vehicle-mounted antenna lodging mechanism of the present invention utilizes a combination of a worm gear and a synchronous belt to achieve an ingenious and compact overall layout of the product.

[0019] In the scheme of the present invention, the use of synchronous belts (compared with spur gears, bevel gears, lead screw nuts, etc.): (1) enables all transmissions to be meshed with non-metallic parts, which not only reduces noise, (2) also reduces the wear of metal gears, and thus eliminates the need for cleaning debris caused by metal meshing; (3) at the same time, the combination of synchronous belts and worm gears has a simpler structure and greatly reduces the number of parts that need to be processed - conventional gear reduction devices require a series of parts such as various levels of gear shafts, various levels of gears, bearings required for each gear shaft, bearing covers, etc. In order to achieve the same function of gear reduction, at least 6 more precise parts are required, and 4 pairs of bearings, a key and a coupling are also required - however, the selection of worm gears and synchronous belts of the present invention has a standardized series of products, requiring two pairs of synchronous wheels (two on the worm shaft, one each on the handle shaft and the motor shaft) and two synchronous belts , and keys are sufficient, thus achieving low cost and space saving; (4) As a result, the overall reducer no longer needs a customized gearbox, and only uses the product housing shell as the shaft support of the worm gear; (5) In this chamber (the right chamber in the figure), the worm gear assembly of the gearbox is omitted, and based on the conversion of the transmission direction, the motor and the worm gear assembly can be arranged in parallel on the same side - through the design of the space in the chamber shell, the motor assembly is arranged in a parallel position to the worm, and the space above (or below) the two is used to arrange the worm wheel and its support / transmission shaft, which neither interferes with the support of the box body for the worm gear assembly nor wastes the space below the worm gear shaft, realizing a truly compact use of space; (6) The box body is divided into left and right parts, the motor gear is set in the right chamber, and the left chamber is easy to open, so that the synchronous belt can be easily replaced and maintained if damaged.

[0020] At the same time, the present invention adopts dual synchronous belt transmission to realize two transmission controls of motor transmission and handle. The operation of switching between the two control modes is relatively convenient. The synchronous belt tensioning mechanism is simple and practical. The handle shaft has a modular design and is easy to install. It can improve the reliability of the antenna inversion mechanism, reduce the difficulty of maintenance, and thus extend the service life.

[0021] Furthermore, the mechanism of the present invention also has a conveniently adjustable double protection limit mechanism. The limit switch can be fine-tuned at an angle on the outside of the box through a set elliptical hole to achieve electrical limits at two extreme positions of 0° and 90°. The bump block is a second level of protection. When the limit switch fails, the bump block can prevent the movement of the support mechanism / limit block, thereby protecting the lodging mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a partial cross-sectional schematic diagram of the front direction of the lodging mechanism of the present invention.

[0023] Figure 2 for Figure 1 A top cross-sectional schematic diagram of the lodging mechanism of the present invention along line AA.

[0024] Among them, 1: box body, 2: worm gear assembly, 3: motor assembly, 4: electric synchronous belt assembly, 5: manual synchronous belt assembly, 6: handle shaft assembly, 7: bump block, 8: limit block, 9: switch bracket, 10: support mechanism; 11: motor transition plate, 12: handle shaft bearing seat, 13: handle shaft, 14: handle shaft bearing, 15: handle shaft bearing cover, 16: worm, 17: worm wheel, 18: rear cover plate, 19: worm wheel large bearing seat, 20: switch, 21: worm wheel shaft. DETAILED DESCRIPTION

[0025] The vehicle-mounted antenna falling mechanism of the present invention is further described in conjunction with the accompanying drawings.

[0026] Among them, in order to clearly express the connection relationship between the various parts in the box, Figure 1 It is a partial cross-sectional schematic diagram, for example, the upper right part is a schematic diagram of the box surface connected to the external support mechanism 10, the lower right part of the curve is a cross-sectional view along the worm axis, and the internal structure shown at the left curve is a cross-sectional view of the handle shaft axis.

[0027] like Figure 1 and Figure 2 As shown, a vehicle-mounted antenna falling mechanism is provided, which consists of a box body 1, a worm gear assembly 2, a motor assembly 3, two sets of synchronous belt assemblies - an electric synchronous belt assembly 4 and a manual synchronous belt assembly 5, a handle shaft assembly 6, a bump block 7, a limit block 8, a switch bracket 9, and a supporting mechanism 10.

[0028] Specifically, the motor assembly 3 and the worm gear assembly 2 are arranged in the right chamber of the housing 1, and the motor assembly 3 is connected to the middle partition of the housing 1 through the motor transition plate 11 to fix the motor. The worm gear assembly 2 is arranged orthogonally, and the front and rear walls of the housing 1 are used to support the shaft system of the worm wheel 17 (worm wheel shaft 21), and the right wall and the middle partition are used to support the shaft system of the worm 16.

[0029] The motor assembly 3 and the worm 16 are arranged in parallel on the lower side of the right chamber, and the input and output ends thereof extend through the partition to the left chamber of the box body 1. Two sets of synchronous belt assemblies 4 and 5 are arranged in the left chamber, and a handle shaft assembly 6 is arranged. The left chamber has an openable rear cover plate 18 for installation and maintenance. The handle shaft assembly 6 is installed on the inner wall of the box body, and is composed of a handle shaft 13, a handle shaft bearing seat 12, a handle shaft bearing 14 and a handle shaft bearing gland 15. Cantilever support of the handle shaft 13 and the pulley of its synchronous belt assembly 5 can be achieved.

[0030] The worm wheel 17 of the worm gear assembly 2 is located on the upper side of the right chamber (relative to the worm 16), and the output end of the worm wheel shaft 21 extends out of the housing 1 from the bearing holes of the front and rear walls, and is positioned and connected relative to the housing 1 through the large worm wheel bearing seat 19, and is fixedly connected to the support mechanism 10 by means of shaft hole positioning, ultimately achieving the lodging control of the antenna supported by the two support mechanisms 10.

[0031] The specific working principle is as follows: Figure 1 and Figure 2 As shown, the output end of the motor assembly 3 is connected to the electric synchronous belt assembly 4. The synchronous belt transmits the torque to the worm gear assembly 2, and finally drives the support mechanism 10 to rotate. Another set of manual synchronous belt assemblies 5 is connected to the input end of the worm 16 at one end, and connected to the handle shaft assembly 6 at the other end, to realize the function of manually controlling the rotation.

[0032] like Figure 1 As shown, the limiting structure is arranged at the front wall of the right chamber, and a limiting block 8 is arranged on the output end of the worm shaft 21 and close to the inner wall of the box body 1 (in this example, as shown in FIG. Figure 1 As shown in the figure, the limit block and the axis of the support mechanism 10 are at an angle of about 45°. The inner wall on the same side of the box body 1 is provided with two bump blocks 7 and switch components (switch bracket 9 and switch 20) (only one is shown in the figure), which are respectively positioned at a horizontal position of about 45° on both sides (or can be any desired position, and the desired switch position can be directly adjusted by using the elliptical hole for installing the switch bracket 9) to realize the support mechanism 10 in the vertical and right sides (such as Figure 1 90° rotation between horizontal positions (as shown in FIG. 1 ). When rotating to the limited position, the limit block 8 contacts the switch 20 installed on the reverse side of the switch bracket 9 (inner wall of the box body 1), realizing the electrical appliance limit. When the electrical appliance limit is exceeded or the electrical appliance limit fails, the limit block 8 contacts the bump block 7, realizing mechanical limit. Thus, double protection is realized.

[0033] like Figure 1 and Figure 2 As shown, during manual control, the handle shaft assembly 6 is driven by an external handle, and the torque is transmitted to the worm gear assembly 2 through the manual synchronous belt 5, and finally the erection and retraction of the retraction mechanism are realized. The two sets of synchronous belt assemblies 4 and 5 are simultaneously connected to the input end of the worm 16 to play the role of transmitting torque.

[0034] It should be understood that the directional indications such as "right, left, right wall, front and rear wall" described herein are based on Figure 1 and Figure 2 The boxes in the example shown are divided according to their orientation, that is, they are oriented according to the direction in which the device is used. It should be understood that in the solution of the present invention, the so-called left and right, front and back positions are interchangeable and do not constitute a substantial limitation to the solution.

[0035] Similarly, it should be understood that the "horizontal and vertical" mentioned herein are mainly based on the ground as a reference, and can also be based on the roof plane as a reference, that is, "horizontal" means parallel to the ground / roof plane, and "vertical" means perpendicular to the ground / roof plane. It should also be understood that the "outside" and "distal end" mentioned herein refer to the direction away from the center of the device, while "inside" refers to the direction toward the center of the device.

[0036] The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technician familiar with this patent can make some changes or modify the technical contents suggested above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the solution of the present invention.

Claims

1. A lodging mechanism for a vehicle-mounted antenna, characterized in that: The lodging mechanism comprises a box, a worm gear assembly, a motor assembly, a first synchronous belt assembly, a support mechanism, a second synchronous belt assembly and a handle shaft assembly; wherein the first synchronous belt assembly is respectively connected to the motor assembly and the worm gear assembly to transmit the output torque of the motor assembly to the worm gear assembly, and the worm gear assembly is connected to the support mechanism, thereby driving the support mechanism supporting the antenna to rotate; Wherein, the second synchronous belt assembly is respectively connected to the handle shaft assembly and the worm gear assembly, and transmits the output torque of the handle shaft assembly to the worm gear assembly to realize manual control of the antenna; Wherein, the worm shaft of the worm gear assembly is arranged orthogonally to the worm, the input end of the worm is connected to the first and second synchronous belt assemblies, and the output end of the worm shaft is connected to the support mechanism; wherein the housing is divided into two chambers separated by a partition, the motor assembly and the worm gear assembly are positioned in parallel in the first chamber, and the motor assembly and the worm are arranged in parallel below the worm shaft in the first chamber; the first and second synchronous belt assemblies are positioned in the second chamber, and the handle shaft assembly is positioned at the distal end side of the second chamber; Wherein, the motor assembly is fixedly connected to the partition through a motor transition plate, the output end of the motor passes through the partition to be transmission-connected to the first synchronous belt assembly, and the input end of the worm passes through the partition to be transmission-connected to the first and / or second synchronous belt assembly; Wherein, the tensioning structure of the first synchronous belt assembly is arranged at the connection between the motor assembly and the box partition, and the tensioning structure of the second synchronous belt assembly is arranged at the connection between the handle shaft assembly and the box.

2. The vehicle-mounted antenna falling mechanism according to claim 1, characterized in that: The falling mechanism also includes a limit block, a bump block and a switch assembly for rotational limiting, wherein the limit block is arranged on the worm gear shaft, and the bump block and the switch assembly are arranged on the box body. As the worm gear shaft rotates, the limit block moves between the bump blocks and / or between the switch assemblies to realize the rotational limiting of the support mechanism.

3. The vehicle-mounted antenna falling mechanism according to claim 1 or 2, characterized in that: The handle shaft assembly is composed of a handle shaft, a bearing seat, a bearing and a bearing cover.

4. The vehicle-mounted antenna falling mechanism according to claim 1 or 2, characterized in that: The worm gear shaft and the supporting mechanism are fixedly connected outside the box.

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