CN215067294U

CN215067294U - Distance measuring device

Info

Publication number: CN215067294U
Application number: CN202121534211.5U
Authority: CN
Inventors: 不公告发明人
Original assignee: Hainan Xiaoshai Intelligent Technology Co ltd
Current assignee: Hainan Xiaoshai Intelligent Technology Co ltd
Priority date: 2021-07-07
Filing date: 2021-07-07
Publication date: 2021-12-07
Anticipated expiration: 2031-07-07

Abstract

The application provides a range unit relates to sound wave range finding technical field. The distance measuring device comprises a shell, a transducer and a first wave absorption cover. The transducer is mounted within the housing. The first wave absorption cover is positioned in the shell, and one end of the first wave absorption cover is of a hollow structure with a first opening. A first acoustic shield is disposed on the transducer, the first acoustic shield being configured to allow the transducer to transmit acoustic signals through the first opening to the target. The distance measuring device is characterized in that a first wave absorption cover is arranged on an upper cover of a transducer and used for absorbing ultrasonic waves scattered out of the periphery of the transducer, and a first opening is formed in the first wave absorption cover and used for allowing the transducer to transmit sound wave signals to a target piece. The distance measuring device absorbs the ultrasonic waves scattered around the transducer, so that the signal interference is less and the distance measuring precision is high.

Description

Distance measuring device

Technical Field

The application relates to the technical field of sound wave distance measurement, in particular to a distance measuring device.

Background

In the related art, some distance measuring devices adopt a receiving and transmitting integrated transducer, that is, both an ultrasonic signal generating device and an echo signal receiving device are the same transducer. The applicant has found that the problems in the related art are: the accuracy of the distance measuring device is poor.

SUMMERY OF THE UTILITY MODEL

An object of the embodiments of the present application is to provide a ranging apparatus, which aims to improve the problem of poor accuracy of the ranging apparatus in the related art.

The embodiment of the application provides a distance measuring device, and the distance measuring device comprises a shell, a transducer and a first wave absorption cover. The transducer is mounted within the housing. The first wave absorption cover is positioned in the shell, and one end of the first wave absorption cover is of a hollow structure with a first opening. A first acoustic shield is disposed on the transducer, the first acoustic shield being configured to allow the transducer to transmit acoustic signals through the first opening to the target.

In the technical scheme, the first wave absorption cover is arranged on the transducer in a covering mode to absorb ultrasonic waves scattered out of the periphery of the transducer. By providing a first opening in the first acoustic shield to allow the transducer to transmit an acoustic signal to the target member. The distance measuring device absorbs the ultrasonic waves scattered around the transducer, so that the signal interference is less and the distance measuring precision is high.

As an optional technical scheme of the embodiment of the application, the first wave-absorbing cover comprises a wave-absorbing cylinder body and a wave-absorbing cover body. The wave-absorbing cylinder body is of a hollow structure with two opposite open ends, and the wave-absorbing cover body covers one end of the hollow structure. The wave-absorbing cover body and the wave-absorbing cylinder body jointly define a first accommodating space, the first accommodating space is used for accommodating the energy converter, and a first opening is formed at one end, far away from the wave-absorbing cover body, of the wave-absorbing cylinder body.

In the technical scheme, the wave absorbing cylinder cover is arranged on the circumferential surface of the transducer, and the wave absorbing cover body cover is arranged at one end of the transducer, so that the transducer can only transmit sound wave signals to a target piece through the first opening, interference signals scattered around the transducer are well absorbed, and the precision of distance measurement is improved.

As an optional technical scheme of the embodiment of the application, the first wave absorption cover is made of foam.

In the technical scheme, the first wave absorbing cover is made of foam, so that the wave absorbing and damping device has good wave absorbing and damping performances.

As an optional technical scheme of the embodiment of the application, the distance measuring device further comprises a shielding cover, and the shielding cover is located in the shell. The shielding cover is a hollow structure with one end forming a second opening and is arranged on the first wave absorption cover. The orientation of the second opening is consistent with the orientation of the first opening.

In above-mentioned technical scheme, through setting up the shield cover, play the shielding effect, can reduce external disturbance, promote the range finding precision.

As an optional technical solution of the embodiment of the present application, the shield case is mounted to the housing.

In above-mentioned technical scheme, through installing the shield cover in the casing, promote the stability of structure.

As an optional technical solution of the embodiment of the present application, a through hole is formed at an end of the shielding cover opposite to the second opening.

In the technical scheme, the through holes are formed in the shielding cover, so that the air in the cavity of the shielding cover is discharged in the installation process of the transducer and the first wave absorption cover, and the air or bubbles in the cavity of the shielding cover after installation is avoided.

As an optional technical scheme of the embodiment of the application, the distance measuring device further comprises a second wave absorbing cover, and the second wave absorbing cover is located in the shell. The second wave-absorbing cover is a hollow structure with a third opening formed at one end, and the second wave-absorbing cover is arranged on the shielding cover. The orientation of the third opening coincides with the orientation of the first opening.

In the above technical solution, since the transducer is installed in the housing, when the transducer vibrates, the housing may vibrate together with the transducer to form a common vibration source, and ultrasonic vibration occurs. Set up the second and inhale the signal interference that the ultrasonic wave resilience of cover can absorb the casing caused, promote the range finding precision.

As an optional technical solution of the embodiment of the present application, the second wave-absorbing cover includes a second accommodating space, and the second accommodating space is used for accommodating the transducer, the first wave-absorbing cover, and the shielding cover.

In above-mentioned technical scheme, the second accommodation space of second suction wave cover holds transducer, first suction wave cover and shield cover, can comparatively fully absorb the signal interference that the ultrasonic wave resilience of casing caused, promotes the range finding precision.

As an optional technical scheme of the embodiment of the application, the second wave absorption cover is made of foam.

In the technical scheme, the second wave absorbing cover is made of foam, so that the wave absorbing and damping device has good wave absorbing and damping performances.

As an optional technical scheme of the embodiment of the application, the distance measuring device further comprises an adhesive layer, and the transducer is adhered to the shell through the adhesive layer.

In above-mentioned technical scheme, through setting up adhesive linkage bonding transducer and casing, when can playing the connection effect, can also effectively transmit ultrasonic vibration and energy, reduce the loss of ultrasonic energy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

Fig. 1 is an exploded view of a distance measuring device according to an embodiment of the present disclosure;

fig. 2 is a cross-sectional view of a distance measuring device according to an embodiment of the present application.

Icon: 10-a distance measuring device; 100-a housing; 110-a lower housing; 120-an upper shell; 200-a transducer; 300-a first wave-absorbing hood; 310-a first wave absorbing cylinder; 320-a first wave-absorbing cover body; 400-a shield can; 410-a through hole; 500-a second wave-absorbing cover; 510-a second wave-absorbing cylinder; 520-a second wave-absorbing cover body; 600-a battery; 700-circuit board.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it is to be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, refer to the orientation or positional relationship as shown in the drawings, or as conventionally placed in use of the product of the application, or as conventionally understood by those skilled in the art, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be considered as limiting the present application.

Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Examples

Referring to fig. 1 and fig. 2, the present embodiment provides a distance measuring device 10, where the distance measuring device 10 includes a housing 100, a transducer 200, and a first suction cup 300. The transducer 200 is mounted within the housing 100. The first suction cap 300 is positioned in the housing 100, and the first suction cap 300 is a hollow structure having one end forming a first opening. A first acoustic shield 300 is positioned over the transducer 200, the first acoustic shield 300 being configured to allow the transducer 200 to transmit acoustic signals through the first opening to a target. The first ultrasonic absorption cover 300 is disposed on the transducer 200 to absorb ultrasonic waves scattered around the transducer 200. By providing a first opening in the first acoustic shield 300 to allow the transducer 200 to transmit an acoustic signal to the target. Incorporated in fig. 2, the first suction cup 300 allows the transducer 200 to emit a sound wave signal downward, while absorbing scattered ultrasonic waves in the left-right direction and upward from the transducer 200. The distance measuring device 10 absorbs the ultrasonic waves scattered around the transducer 200, so that signal interference is less, and the distance measuring precision is high.

Referring to fig. 1 and fig. 2, in some embodiments, the housing 100 includes an upper housing 120 and a lower housing 110, and the upper housing 120 is fastened to the lower housing 110. When the upper housing 120 and the lower housing 110 are fastened, a receiving cavity is defined, and the transducer 200 and the first radome 300 are received in the receiving cavity. Optionally, the transducer 200 is mounted to the lower housing 110. Specifically, the distance measuring device 10 further includes an adhesive layer through which the transducer 200 is adhered to the lower case 110. In other words, the transducer 200 is bonded to the lower housing 110 by glue. Through setting up adhesive linkage bonding transducer 200 and casing 100, can play the connection effect in, can also effectively transmit ultrasonic vibration and energy, reduce the loss of ultrasonic energy.

In some embodiments, the first suction cup 300 is located in the lower housing 110, the first suction cup 300 is positioned over the transducer 200, and the first opening faces the location of the target to allow the transducer 200 to transmit acoustic signals to the target through the first opening. Referring to fig. 1 in conjunction with fig. 2, in some embodiments, the first wave-absorbing cover 300 includes a first wave-absorbing cylinder 310 and a first wave-absorbing cover 320. The first wave absorbing cylinder 310 is a hollow structure with two opposite open ends, and the first wave absorbing cover 320 covers one end of the hollow structure. The first wave absorbing cover body 320 and the first wave absorbing cover body 310 jointly define a first accommodating space for accommodating the transducer 200, and a first opening is formed at one end of the first wave absorbing cover body 310, which is far away from the first wave absorbing cover body 320. The first wave absorbing cylinder 310 covers the periphery of the transducer 200, and the first wave absorbing cover 320 covers one end of the transducer 200, so that the transducer 200 can only transmit sound wave signals to a target through the first opening, interference signals scattered around the transducer 200 are well absorbed, and the accuracy of distance measurement is improved. Optionally, the inner diameter of the first wave absorbing cylinder 310 is matched with the diameter of the transducer 200, and the diameter of the first wave absorbing cover 320 is matched with the diameter of the end of the first wave absorbing cylinder 310, so that not only is the space in the housing 100 occupied saved, but also the cost is reduced, and the wave absorbing effect can be improved.

It should be noted that the first wave absorbing cylinder 310 and the first wave absorbing cover 320 may be a separate body or an integrated body.

In other embodiments, the first suction hood 300 is a hollow spherical structure. The transducer 200 is accommodated in the hollow portion of the first suction cup 300 and transmits an acoustic signal to the target member through the first opening.

The first wave-absorbing cover 300 is made of foam. The first wave-absorbing cover 300 is made of foam, and has good wave-absorbing and shock-absorbing properties. Specifically, the material of the first wave-absorbing cover 300 may be selected from EVA (Ethylene Vinyl Acetate Copolymer), EPP (Expanded polypropylene), foam, and the like. In addition, other wave-absorbing and shock-absorbing materials can be selected for the first wave-absorbing cover 300. Such as graphene, carbon fiber, ferrite, silicon carbide, conductive polymers, and the like.

Referring to fig. 1 and fig. 2, the distance measuring device 10 further includes a shielding cover 400, and the shielding cover 400 is located in the lower housing 110. Optionally, an adhesive layer is also provided between shield can 400 and lower housing 110, and shield can 400 and lower housing 110 are adhered by the adhesive layer. The shielding can 400 is a hollow structure with one end forming a second opening, the shielding can 400 is covered on the first wave-absorbing cover 300, and the transducer 200 is located in the shielding can 400 (the transducer 200 is located in the first wave-absorbing cover 300, the first wave-absorbing cover 300 is located in the shielding can 400, that is, the transducer 200 is located in the shielding can 400). The orientation of the second opening is consistent with the orientation of the first opening. Through setting up shield cover 400, play the shielding effect, can reduce external interference, promote the range finding precision.

The shield can 400 is made of a metal material and plays a role of metal shielding. In some embodiments, the metal cover includes a bottom wall and a peripheral wall. The peripheral wall is a hollow structure with two opposite open ends, and the bottom wall is connected with one end of the peripheral wall. The peripheral wall cover is provided on the first wave-absorbing cylinder 310 of the first wave-absorbing cover 300, and the bottom wall cover is provided on the first wave-absorbing cover body 320 of the first wave-absorbing cover 300. The bottom wall and the peripheral wall together define a third accommodation space for accommodating the transducer 200 and the first suction cap 300, and an end of the peripheral wall remote from the bottom wall forms a second opening.

In other embodiments, the shield can 400 is a hollow spherical structure. The transducer 200 and the first suction cup 300 are accommodated in the hollow portion of the shield cup 400, and transmit an acoustic wave signal to the target through the second opening.

Referring to fig. 1 and fig. 2, a through hole 410 is formed at an end of the shielding cover 400 opposite to the second opening. In other words, the through-hole 410 opens on the bottom wall. Through set up through-hole 410 on shield cover 400, can guarantee that transducer 200 and first suction hood 300 installation in-process, with the air escape in the cavity of shield cover 400, avoid installing to exist air or bubble in the cavity of back shield cover 400.

The distance measuring device 10 further comprises a second wave-absorbing cover 500, and the second wave-absorbing cover 500 is located in the housing 100. The second wave absorbing cover 500 is a hollow structure with a third opening formed at one end, the second wave absorbing cover 500 covers the shielding cover 400, the transducer 200 is positioned in the second wave absorbing cover 500 (the transducer 200 is positioned in the first wave absorbing cover 300, the first wave absorbing cover 300 is positioned in the shielding cover 400, the shielding cover 400 is positioned in the second wave absorbing cover 500, that is, the transducer 200 is positioned in the second wave absorbing cover 500). The orientation of the third opening coincides with the orientation of the first opening. Since the transducer 200 is installed in the housing 100, when the transducer 200 vibrates, the housing 100 may vibrate together with the transducer 200 to form a common vibration source, and ultrasonic vibration occurs. The second wave absorption cover 500 can absorb signal interference caused by ultrasonic wave rebound of the shell 100, and distance measurement precision is improved.

Referring to fig. 1 in conjunction with fig. 2, in some embodiments, the second wave-absorbing cover 500 includes a second wave-absorbing cylinder 510 and a second wave-absorbing cover 520. The second wave-absorbing cylinder 510 is a hollow structure with two opposite open ends, and the second wave-absorbing cover 520 covers one end of the hollow structure. The second wave-absorbing cover body 520 and the second wave-absorbing cylinder body 510 jointly define a second accommodating space, the second accommodating space is used for accommodating the transducer 200, the first wave-absorbing cover 300 and the shielding cover 400, and a third opening is formed at one end, far away from the second wave-absorbing cover body 520, of the second wave-absorbing cylinder body 510. The second wave-absorbing cylinder 510 covers the circumference of the transducer 200, and the second wave-absorbing cover 520 covers one end of the transducer 200, so that the ultrasonic waves rebounded from the shell 100 are effectively absorbed, and the distance measurement precision is improved. Optionally, the inner diameter of the second wave-absorbing cylinder 510 is matched with the outer diameter of the shielding case 400, and the diameter of the second wave-absorbing cover 520 is matched with the outer diameter of the end of the second wave-absorbing cylinder 510.

It should be noted that the second wave-absorbing cylinder 510 and the second wave-absorbing cover 520 may be a split type or an integrated type.

In other embodiments, the second pumping housing 500 is a hollow spherical structure. The transducer 200, the first suction cup 300 and the shield cup 400 are accommodated in the hollow portion of the second suction cup 500, and the transducer 200 transmits an acoustic signal to the target through the third opening.

The second wave-absorbing cover 500 is made of foam. The second wave absorbing cover 500 is made of foam, so that the wave absorbing and damping performance is good. Specifically, the material of the second wave-absorbing cover 500 may be EVA (Ethylene Vinyl Acetate Copolymer), EPP (Expanded polypropylene), foam, or the like. In addition, other wave-absorbing and shock-absorbing materials can be selected for the second wave-absorbing cover 500. Such as graphene, carbon fiber, ferrite, silicon carbide, conductive polymers, and the like.

Referring to fig. 1 and fig. 2, the distance measuring device 10 further includes a circuit board 700 and a battery 600, the battery 600 supplies power to the circuit board 700, and the circuit board 700 is electrically connected to the transducer 200 and is configured to control the transducer 200 to emit a sound wave signal and process a signal received by the transducer 200.

The present embodiment provides a distance measuring device 10, the distance measuring device 10 comprising a housing 100, a transducer 200 and a first suction cup 300. The transducer 200 is mounted within the housing 100. The first suction cap 300 is positioned in the housing 100, and the first suction cap 300 is a hollow structure having one end forming a first opening. A first acoustic shield 300 is positioned over the transducer 200, the first acoustic shield 300 being configured to allow the transducer 200 to transmit acoustic signals through the first opening to a target. The first wave absorbing cover 300 comprises a wave absorbing cylinder body and a wave absorbing cover body, the wave absorbing cylinder body is of a hollow structure with two opposite open ends, one end of the hollow structure is covered by the wave absorbing cover body, a first accommodating space is defined by the wave absorbing cover body and the wave absorbing cylinder body together, the first accommodating space is used for accommodating the energy converter 200, and a first opening is formed at one end, far away from the wave absorbing cover body, of the wave absorbing cylinder body. The distance measuring device 10 further comprises a shielding case 400, the shielding case 400 is located in the housing 100, the shielding case 400 is a hollow structure with one end forming a second opening, the shielding case 400 is covered on the first wave-absorbing case 300, the transducer 200 is located in the shielding case 400, and the orientation of the second opening is consistent with the orientation of the first opening. The distance measuring device 10 further comprises a second wave absorption cover 500, the second wave absorption cover 500 is located in the shell 100, one end of the second wave absorption cover 500 is of a hollow structure with a third opening, the second wave absorption cover 500 is covered on the shielding cover 400, the transducer 200 is located in the second wave absorption cover 500, and the orientation of the third opening is consistent with that of the first opening.

According to the distance measuring device 10, the first wave absorption cover 300, the shielding cover 400 and the second wave absorption cover 500 are arranged, so that signal interference of ultrasonic waves scattered by the transducer 200 is effectively reduced, wherein the first wave absorption cover 300 can absorb interference signals of the transducer 200 towards the left, right and above directions, and downward sound wave signals emitted to a target piece are reserved. The shielding case 400 and the second wave-absorbing case 500 can effectively shield or absorb signal interference of the external environment. Therefore, the distance measuring device 10 has high distance measuring accuracy.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ranging apparatus, comprising:

a housing;

a transducer mounted within the housing;

the first wave absorption cover is a hollow structure with one end forming a first opening, the first wave absorption cover is arranged on the transducer and is configured to allow the transducer to transmit sound wave signals to a target piece through the first opening.

2. The distance measuring device according to claim 1, wherein the first wave absorbing cover comprises a wave absorbing cylinder and a wave absorbing cover body, the wave absorbing cylinder is a hollow structure with two opposite open ends, the wave absorbing cover body covers one end of the hollow structure, the wave absorbing cover body and the wave absorbing cylinder together define a first accommodating space, the first accommodating space is used for accommodating the transducer, and the first opening is formed at one end of the wave absorbing cylinder far away from the wave absorbing cover body.

3. A ranging device as claimed in claim 1 or 2 wherein the first hood is of foam.

4. The range finder device according to claim 1, further comprising a shield cover, wherein the shield cover is located in the housing, the shield cover is a hollow structure with one end forming a second opening, the shield cover is arranged on the first wave-absorbing cover, and the orientation of the second opening is identical to the orientation of the first opening.

5. A ranging apparatus as claimed in claim 4 wherein the shield is mounted to the housing.

6. The range finder device of claim 4, wherein an end of the shield opposite the second opening is perforated with a through hole.

7. The distance measuring device of claim 4, further comprising a second wave-absorbing cover, wherein the second wave-absorbing cover is located in the housing, the second wave-absorbing cover is a hollow structure with a third opening formed at one end, the second wave-absorbing cover is located in the shielding cover, and the orientation of the third opening is consistent with the orientation of the first opening.

8. A ranging apparatus as claimed in claim 7 wherein the second suction cup comprises a second receiving space for receiving the transducer, the first suction cup and the shield.

9. A ranging device as claimed in claim 7 wherein the second suction cup is of foam.

10. A ranging device as claimed in claim 1 further comprising an adhesive layer by which the transducer is adhered to the housing.