Rotary table limiting device, rotary table and wireless test system
By designing a turntable limiting device with movable limiting parts and buffer components, the problem of high production cost and poor versatility of the turntable limiting structure in the prior art is solved, and the limiting effect with lower cost and higher versatility is achieved. Avoid damage to the turntable.
Patent Information
- Application Number
- CN202420450449.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-06
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-03-06
AI Technical Summary
The production cost of the prior art transceiver station limit structure is high and has poor versatility, which is not conducive to standardization.
A rotary table limiting device is designed, including a seat body, a movable channel, a movable assembly, an induction device and a buffering assembly. The limiting device can move in the movable passage with the movable member. The induction device sends a stop signal to control the rotational part to stop and buffer. The assembly provides buffering when the induction device fails to prevent excessive rotation of the turntable.
It reduces production costs, improves versatility, realizes standardization of limiting devices, and avoids damage to the turntable or limiting devices.
Smart Images
Figure CN222231690U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of wireless testing equipment, in particular to a turntable limiting device, a turntable and a wireless testing system. Background Art
[0002] In wireless test equipment, a rotatable turntable is usually required to carry the device under test, and when the device under test needs to be rotated, the turntable is also required to realize the rotation of the device under test.
[0003] In the prior art, the turntable limit mechanism is used to prevent the turntable from rotating beyond the limit and causing equipment damage or safety accidents. In the prior art, the turntable limit methods mainly include mechanical limit and photoelectric trigger limit. For example, in the patent with patent number CN113203013A, a turntable limit structure disclosed therein can realize a mechanical and electrical combined limit device greater than ±180°, but this device is an arc fit, and it is easy to get stuck when sliding. The arc-shaped structure is difficult to process and has a high manufacturing cost. The curvature needs to be matched with the outer ring of the turntable, and the versatility is poor. The spring also needs to be specially customized, which is not conducive to the standardization of the limit device. Utility Model Content
[0004] The technical problem solved by the utility model is how to improve the technical problem that the transfer table limiting structure in the prior art has high production cost and poor versatility, which is not conducive to standardization.
[0005] The embodiments of the present invention can be implemented as follows:
[0006] The utility model provides a turntable limiting device for limiting the rotation of a rotating part on a turntable, wherein a limiting structure is provided on the rotating part, and the limiting structure is used to rotate along a circumferential path following the rotating part, and the turntable limiting device comprises:
[0007] A seat body, on which a movable channel is formed, and a sliding groove connected to the movable channel is formed on the seat body, wherein the extending direction of the sliding groove is the same as the extending direction of the movable channel;
[0008] A limiting assembly, comprising a movable member and a limiting member, wherein the limiting member is fixed to the movable member, and the movable member is movably disposed in the movable channel and can move along the extension direction of the movable channel; the limiting member extends from the sliding groove to the outside of the seat body and is used to be disposed on the circumferential path;
[0009] a sensing device, disposed on the seat body and having a detection area located in the movable channel; the sensing device is used to send a stop signal for controlling the rotating part to stop rotating when the limit member moves to the detection area;
[0010] a buffer assembly, disposed at an end of the movable channel and used to provide buffering to the movable member when the movable member abuts against the buffer assembly;
[0011] Wherein, the detection area is located between the center of the active channel and the buffer component.
[0012] Optionally, the active channel extends along a straight line.
[0013] Optionally, there are two sensing devices, which are respectively arranged on both sides of the center of the movable channel; and the buffer components are arranged at both ends of the movable channel.
[0014] Optionally, a mounting groove is provided on the seat body, the mounting groove is located below the movable channel and communicated with the movable channel; the sensing device is arranged in the mounting groove and is arranged toward the movable channel;
[0015] The limiting member penetrates through the movable member so as to be exposed from a side of the movable member close to the sensing device.
[0016] Optionally, the buffer assembly includes a fixing member and an elastic member, the fixing member is fixed to the end of the movable channel; one end of the elastic member is fixed to the fixing member.
[0017] Optionally, the elastic member is a rectangular spring.
[0018] Optionally, the limiting member includes a limiting body and a shock-absorbing block, the limiting body is fixed to the movable member, and one end of the limiting body away from the movable member extends to the outside of the seat body; the shock-absorbing block is sleeved on one end of the limiting body away from the movable member for support by the limiting structure.
[0019] Optionally, the limiting member further includes a sliding gasket, which is disposed below the shock absorbing block and is in slidable contact with the seat body.
[0020] A turntable comprises the above-mentioned turntable limiting device, wherein the limiting member is arranged on the circumferential path.
[0021] A wireless testing system comprises the above-mentioned turntable.
[0022] The turntable limiting device, turntable and wireless test system provided by the utility model have the following beneficial effects compared with the prior art:
[0023] In the turntable limiting device, the structure used to cooperate with the limiting structure is a limiting member, and the limiting member can move with the movable member in the movable channel; and when the limiting member moves to the detection area, the turntable can be braked; and when the sensing device fails, the buffer assembly can provide buffering to the movable member to ensure that when the turntable is limited, the turntable or the turntable limiting device is not damaged. The turntable limiting device does not need to be designed and manufactured according to the arc shape of the turntable, and has a simple structure and is easy to manufacture and assemble, which greatly reduces the manufacturing cost. At the same time, it can also be applied to a variety of turntables to improve its versatility. At the same time, it can also facilitate the standardization of the limiting device. Based on this, the turntable limiting device provided by the utility model, and the turntable and wireless testing system using the turntable limiting device can achieve the purpose of improving the technical problems of the high manufacturing cost and poor versatility of the turntable limiting structure in the prior art, which are not conducive to standardization. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 This is one of the perspectives of the cross-sectional schematic diagram of the turntable limiting device provided in the embodiment of the present application;
[0026] Figure 2 Another perspective of the cross-sectional schematic diagram of the turntable limiting device provided in the embodiment of the present application;
[0027] Figure 3 A schematic diagram of the rotation angle of the limiting structure and the limiting member provided in the embodiment of the present application;
[0028] Figure 4 A schematic diagram of a partial structure of a turntable provided in an embodiment of the present application;
[0029] Figure 5 This is a schematic diagram of the structure of the turntable provided in the embodiment of the present application.
[0030] Icons: 10-turntable; 11-turntable limiting device; 12-rotating part; 121-limiting structure; 13-cover; 100-seat; 110-movable channel; 111-sliding slot; 120-installing slot; 200-limiting assembly; 210-movable part; 220-limiting part; 221-limiting body; 222-shock-absorbing block; 223-sliding gasket; 300-sensing device; 400-buffer assembly; 410-fixing part; 420-elastic part. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0033] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.
[0034] In the description of the present utility model, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present utility model.
[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.
[0037] See also Figure 1 In the embodiment of the present application, a turntable limiting device 11 is provided. The turntable limiting device 11 can be applied to a turntable 10 in a wireless test system, such as Figure 4 , so as to limit the rotation stroke of the rotating part 12 on the turntable 10. In addition, the turntable limiting device 11 provided in this embodiment can improve the technical problems of the high manufacturing cost and poor versatility of the limit structure 121 of the turntable 10 in the prior art, which are not conducive to standardization.
[0038] It should be noted that if Figure 4In the turntable 10, the rotating part 12 is used to carry the device under test in the wireless test operation, and when the device under test needs to adjust the test orientation, the rotation of the rotating part 12 can be used to realize the rotation of the device under test. During the rotation of the rotating part 12, the rotating part 12 has a limiting structure 121 that rotates with it. During the rotation of the rotating part 12, the limiting structure 121 moves along a circular path. In order to limit the rotation stroke of the rotating part 12, the limiting structure 121 is used to cooperate with the turntable limiting device 11, thereby limiting the rotation stroke of the rotating part 12.
[0039] It should be understood that the turntable limiting device 11 provided in this embodiment can be applied not only to the turntable 10 in the wireless test system, but also to the turntable 10 in other devices, such as display cabinets, photographic devices and other test equipment.
[0040] In this embodiment, please refer to Figure 1 and Figure 2 The turntable limiting device 11 includes a seat body 100, a limiting assembly 200, a sensing device 300 and a buffer assembly 400. A movable channel 110 is provided on the seat body 100, and a sliding groove 111 connected to the movable channel 110 is also provided on the seat body 100, and the extension direction of the sliding groove 111 is the same as the extension direction of the movable channel 110. The limiting assembly 200 includes a movable member 210 and a limiting member 220, the limiting member 220 is fixed to the movable member 210, and the movable member 210 can be movably arranged in the movable channel 110 and can move along the extension direction of the movable channel 110; the limiting member 220 extends from the sliding groove 111 to the outside of the seat body 100 and is used to be arranged on a circular path. The sensing device 300 is arranged on the seat body 100 and has a detection area located in the movable channel 110; the sensing device 300 is used to send a stop signal for controlling the rotating part 12 to stop rotating when the limiting member 220 moves to the detection area. The buffer assembly 400 is disposed at the end of the movable channel 110 and is used to provide buffering to the movable member 210 when the movable member 210 abuts against the buffer assembly 400. The detection area is located between the center of the movable channel 110 and the buffer assembly 400.
[0041] During the rotation of the rotating part 12 in the turntable 10, if the rotating part 12 rotates to a preset limit position in one direction, at this time, the limit structure 121 will abut against the limit member 220, and the limit member 220 will move with the limit structure 121, and at the same time drive the movable member 210 to move in the movable channel 110. When the limit member 220 moves to the detection area, the sensing device 300 sends a stop signal, and the rotating part 12 can be controlled to stop rotating according to the stop signal, indicating that the turntable 10 rotates to the preset limit position. Furthermore, if the sensing device 300 fails or is blocked, even if the limit member 220 moves to the detection area, it cannot trigger the sensing device 300 to send a stop signal. At this time, the limit structure 121 continues to rotate, thereby driving the limit member 220 to continue to move. When the limiting member 220 continues to move beyond the detection area, the buffer assembly 400 can provide buffering to the movable member 210, and when the buffer assembly 400 is compressed to the limit state, it provides a limiting effect on the movable member 210. Based on this, through the dual limiting effect of the sensing device 300 and the buffer assembly 400, it can ensure that the turntable 10 is effectively limited in one direction, avoiding damage caused by excessive rotation of the turntable 10.
[0042] It is worth noting that the turntable limiting device 11 does not need to be designed and manufactured according to the arc shape of the turntable 10, and has a simple structure and is easy to manufacture and assemble, which greatly reduces the manufacturing cost. At the same time, it can also be applied to a variety of turntables 10 to improve its versatility. At the same time, it can also facilitate the standardization of the limiting device. This can achieve the purpose of improving the technical problem of the high manufacturing cost and poor versatility of the limit structure 121 of the turntable 10 in the prior art, which is not conducive to standardization.
[0043] Optionally, in this embodiment, the movable channel 110 extends along a straight line. On the one hand, it is convenient to open the movable channel 110 and reduce the manufacturing cost; on the other hand, since the linear movement is not prone to jamming, the stability of the limiting effect is ensured to be higher. Of course, in other embodiments of the present application, the movable channel 110 can also form an arc. Of course, if the movable channel 110 extends along an arc path, its arc can be different from the arc of the circular path of the rotating part 12.
[0044] In the case where the movable channel 110 extends along a straight path, in this embodiment, optionally, there are two sensing devices 300, and the two sensing devices 300 are respectively arranged on both sides of the center of the movable channel 110; and buffer components 400 are arranged at both ends of the movable channel 110. The sensing device 300 and the buffer component 400 located at the same end of the movable channel 110 form a set of limit groups, and the two limit groups correspond to the extreme positions of the rotating part 12 in two directions, respectively, to achieve the limit of the rotating part 12 in two directions.
[0045] It is worth noting that since the limiting member 220 can follow the movable member 210 to move on the extension path of the movable channel 110, the rotation range of the rotating part 12 can be increased, so that the rotation range of the rotating part 12 can be easily increased to a degree greater than 360°.
[0046] The working principle of the turntable limiting device 11 is as follows:
[0047] The rotating part 12 of the turntable 10 makes circular motion with the limiting structure 121, and the stroke is a circular arc motion trajectory, while the stroke of the limiting member 220 of the turntable limiting device 11 is a linear trajectory, wherein the movable member 210 makes reciprocating linear motion in the movable channel 110. The linear trajectory is on the tangent of the circular trajectory, and there is a section of the circular arc trajectory and the linear trajectory are linked. In this linkage area, the limiting structure 121 moves along the circular arc, and the movable member 210 moves in a linear motion.
[0048] like Figure 3 In the initial state, the limit member 220 is set in the central area of the sliding groove 111 (it is in a free state). At this time, the buffer assembly 400 is in a free state. The limit angle ɑ of the turntable 10 and the movement distance L of the limit member 220 (the distance between the detection areas of the two sensing devices 300) follow the relationship between the chord length and the angle: L = 2r*sin(ɑ / 2), where r represents the radius of the circular trajectory. That is to say, when the limit member 220 is located in the central area of the sliding groove 111, the distance between the limit member 220 and the sensing device 300 is L / 2. Among them, Figure 3 The limiting member 220 indicated by the dotted line is the limiting member 220 located at the center of the sliding slot 111 ; the other arc dotted line indicates a partial moving path of the limiting structure 121 .
[0049] When the turntable 10 has not reached the limit position, the limit member 220 is between the two sensing devices 300 and is in a free state; when the turntable 10 rotates forward and approaches the limit member 220, the limit member 220 starts to move to the left to compress the buffer assembly 400 until it moves to the detection area and is detected by the sensing device 300. The sensing device 300 sends a signal to the controller of the turntable 10 to control the turntable 10 to stop rotating. At this time, the turntable 10 is in a positive soft limit state. If the sensing device 300 fails or other reasons cause the turntable 10 to continue to move, the movable member 210 will contact and compress the buffer assembly 400 until the movable member 210 moves to the left edge of the movable channel 110 and is blocked, and the rotating part 12 cannot continue to rotate. The motor driving the rotating part 12 will alarm with an overload and be forced to shut down. At this time, the turntable 10 is in a positive hard limit state. During the return stroke, the limit structure 121 is separated from the limit member 220 assembly, and the limit member 220 is reset under the action of the buffer assembly 400 until it is out of the detection range of the sensing device 300, and the system is in a safe area again. Similarly, when the turntable 10 rotates to the extreme position in the other direction, the working principle of the sensing device 300 and the buffer assembly 400 on the other side is the same as above, which will not be repeated here.
[0050] It should be understood that in other embodiments, the position of the sensing device 300 can be adjusted to adapt to different extreme positions of different turntables 10; similarly, the setting position of the buffer assembly 400 can be adjusted to adapt to different extreme positions of different turntables 10. In addition, the setting position of the buffer assembly 400 can also be farther from the sensing device 300, so that when the limit member 220 moves to the detection area, it still remains in a free state (i.e., a state not resisted by the movable member 210).
[0051] In this embodiment, in order to facilitate the installation of the sensing device 300, a mounting groove 120 is provided on the base 100, and the mounting groove 120 is located below the movable channel 110 and communicated with the movable channel 110; the sensing device 300 is disposed in the mounting groove 120 and is disposed toward the movable channel 110. The limiting member 220 penetrates the movable member 210 to be exposed from the side of the movable member 210 close to the sensing device 300. Based on this, the area above the mounting groove 120 in the movable channel 110 is the detection area, and when the limiting member 220 moves to the detection area, it can be detected by the sensing device 300.
[0052] In this embodiment, the buffer assembly 400 includes a fixing member 410 and an elastic member 420. The fixing member 410 is fixed to the end of the movable channel 110; one end of the elastic member 420 is fixed to the fixing member 410. When the movable member 210 moves to abut against the elastic member 420, the elastic buffering effect of the elastic member 420 can provide a buffering effect to the movable member 210, and when the movable member 210 returns, a restoring force is provided to the movable member 210. In addition, the fixing member 410 can be a plug provided at the end of the movable channel 110, and can be fixed by a fixing member 410 such as a screw to prevent the fixing member 410 from falling off or loosening.
[0053] Optionally, in this embodiment, the elastic member 420 is a rectangular spring, which has a larger buffer force and a higher fatigue strength. Of course, in other embodiments, other elastic structures can also be used.
[0054] In this embodiment, the limiting member 220 includes a limiting body 221 and a shock absorbing block 222. The limiting body 221 is fixed to the movable member 210, and one end of the limiting body 221 away from the movable member 210 extends to the outside of the seat body 100; the shock absorbing block 222 is sleeved on one end of the limiting body 221 away from the movable member 210 for the limiting structure 121 to abut. When the limiting structure 121 rotates with the rotating part 12 to abut against the limiting member 220, the shock absorbing block 222 abuts against the limiting structure 121. Through the elastic deformation of the shock absorbing block 222, a buffering effect can be provided to the limiting structure 121 to avoid collision damage between the limiting member 220 and the limiting structure 121. In the case where the limiting member 220 crosses the detection area and abuts on the buffer structure for forced braking, the shock absorbing block 222 can also avoid damage to the limiting structure 121 through the buffering effect.
[0055] Furthermore, the stopper 220 further includes a sliding gasket 223, which is disposed below the damping block 222 and is in slidable contact with the seat body 100. The provision of the sliding gasket 223 can not only strengthen the assembly of the damping block 222, but also avoid direct friction between the damping block 222 and the seat body 100, thereby protecting the damping block 222.
[0056] Please refer to Figure 4 and Figure 5 Based on the above-mentioned turntable limiting device 11, a turntable 10 is also provided in this embodiment. The turntable 10 adopts the above-mentioned turntable limiting device 11, and the limiting member 220 is arranged on the circumferential path. In addition, a wireless test system (not shown) is also provided in this embodiment. The wireless test system adopts the above-mentioned turntable 10. The turntable 10 and the wireless test system adopting the above-mentioned turntable limiting device 11 can improve the technical problems in the prior art that the limiting structure 121 of the turntable 10 has high production cost and poor versatility, which is not conducive to standardization.
[0057] Optionally, the turntable 10 may further include a cover shell 13 , which is disposed on the turntable 10 to provide protection to the turntable 10 .
[0058] In summary, in the turntable limiting device 11, the structure used to cooperate with the limiting structure 121 is the limiting member 220, and the limiting member 220 can follow the movable member 210 to move in the movable channel 110; and when the limiting member 220 moves to the detection area, the turntable 10 can be braked; and when the sensing device 300 fails, the buffer assembly 400 can also provide buffering for the movable member 210 to ensure that when the turntable 10 is limited, the turntable 10 or the turntable limiting device 11 is not damaged. The turntable limiting device 11 does not need to be designed and manufactured according to the arc shape of the turntable 10, and has a simple structure and is easy to manufacture and assemble, which greatly reduces the manufacturing cost. At the same time, it can also be applied to a variety of turntables 10 to improve its versatility. At the same time, it can also facilitate the standardization of the limiting device. Based on this, the turntable limiting device 11 provided in this embodiment and the turntable 10 and wireless testing system using the turntable limiting device 11 can achieve the purpose of improving the technical problems of the high manufacturing cost and poor versatility of the limit structure 121 of the turntable 10 in the prior art, which are not conducive to standardization.
[0059] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A turntable limiting device, characterized in that: It is used to limit the rotation of the rotating part on the turntable, and the rotating part is provided with a limiting structure, and the limiting structure is used to follow the rotating part to rotate along the circumferential path. The turntable limiting device includes: A seat body, on which a movable channel is formed, and a sliding groove connected to the movable channel is formed on the seat body, wherein the extending direction of the sliding groove is the same as the extending direction of the movable channel; A limiting assembly, comprising a movable member and a limiting member, wherein the limiting member is fixed to the movable member, and the movable member is movably disposed in the movable channel and can move along the extension direction of the movable channel; the limiting member extends from the sliding groove to the outside of the seat body and is used to be disposed on the circumferential path; a sensing device, disposed on the seat body and having a detection area located in the movable channel; the sensing device is used to send a stop signal for controlling the rotating part to stop rotating when the limit member moves to the detection area; a buffer assembly, disposed at an end of the movable channel and used to provide buffering to the movable member when the movable member abuts against the buffer assembly; Wherein, the detection area is located between the center of the active channel and the buffer component.
2. The turntable limiting device according to claim 1, characterized in that: The active channel extends along a straight line.
3. The turntable limiting device according to claim 2, characterized in that: There are two sensing devices, which are respectively arranged on both sides of the center of the movable channel; and the buffer components are arranged at both ends of the movable channel.
4. The turntable limiting device according to claim 1, characterized in that: The seat body is provided with a mounting groove, the mounting groove is located below the movable channel and communicated with the movable channel; the sensing device is arranged in the mounting groove and is arranged toward the movable channel; The limiting member penetrates through the movable member so as to be exposed from a side of the movable member close to the sensing device.
5. The turntable limiting device according to any one of claims 1 to 4, characterized in that: The buffer assembly comprises a fixing member and an elastic member, wherein the fixing member is fixed to the end of the movable channel; and one end of the elastic member is fixed to the fixing member.
6. The turntable limiting device according to claim 5, characterized in that: The elastic member is a rectangular spring.
7. The turntable limiting device according to any one of claims 1 to 4, characterized in that: The limiting member includes a limiting body and a shock absorbing block. The limiting body is fixed to the movable member, and one end of the limiting body away from the movable member extends to the outside of the seat body; the shock absorbing block is sleeved on one end of the limiting body away from the movable member for support by the limiting structure.
8. The turntable limiting device according to claim 7, characterized in that: The position-limiting member further comprises a sliding gasket, which is arranged below the damping block and is in slidable contact with the seat body.
9. A turntable, characterized in that: It comprises a turntable limiting device as described in any one of claims 1 to 8, wherein the limiting member is arranged on the circumferential path.
10. A wireless testing system, characterized in that: Comprising the turntable as claimed in claim 9.