CN220671630U - Lidar and vehicle - Google Patents

Abstract

The disclosure relates to a lidar and a vehicle, wherein the lidar comprises a first shell, a second shell and a sealing ring, the first shell is connected with the second shell, and the first shell is provided with a sealing groove with a notch facing the second shell; the sealing ring is arranged in the sealing groove and comprises a ring body and a bulge, the bulge is arranged on the inner side of the ring body, the ring body is axially clamped between the bottom wall of the sealing groove and the second shell, and the bulge is in interference fit with the wall of the inner side groove of the sealing groove. The laser radar of the embodiment of the disclosure has the advantages of high assembly efficiency, good sealing reliability and the like.

Description

Lidar and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a laser radar and a vehicle.

Background

The laser radar is mostly installed in the outside of vehicle, in order to avoid liquid, dust etc. to get into inside the laser radar, harm the inside spare part of laser radar, cause laser radar inefficacy or range finding inaccuracy, require the laser radar to have better leakproofness. At present, sealing rings are arranged on a first shell and a second shell of the laser radar, so that the sealing performance of the laser radar is improved. For example, the first shell is provided with a sealing groove, the sealing ring is installed in the sealing groove, and the first shell and the second shell squeeze the sealing ring along the axial direction of the sealing ring, so that sealing between the first shell and the second shell is realized. When the laser radar is assembled, the sealing ring is easy to deviate from, incline or incline from the sealing groove, so that the laser radar has lower assembly efficiency and poor sealing reliability.

Disclosure of Invention

The present disclosure aims to solve, at least to some extent, one of the technical problems in the related art.

For this reason, embodiments of the present disclosure propose a lidar to improve assembly efficiency and sealing reliability of the lidar.

The laser radar comprises a first shell, a second shell and a sealing ring, wherein the first shell is connected with the second shell, and a sealing groove with a notch facing the second shell is formed in the first shell; the sealing ring is arranged in the sealing groove and comprises a ring body and a bulge, the bulge is arranged on the inner side of the ring body, the ring body is axially clamped between the bottom wall of the sealing groove and the second shell, and the bulge is in interference fit with the wall of the inner side groove of the sealing groove.

In some embodiments, the protrusion is annular, and a dimension of the protrusion in an axial direction of the seal ring is smaller than a dimension of the ring body in the axial direction of the seal ring.

In some embodiments, the protrusions have a dimension in the medial-lateral direction of 0.1mm to 0.5mm; and/or the dimension of the bulge in the axial direction of the sealing ring is 0.3 mm-1.2 mm.

In some embodiments, the number of the ring bodies is a plurality, and the plurality of ring bodies are arranged at intervals along the inner-outer direction.

In some embodiments, in two adjacent ring bodies, the dimension of the ring body arranged on the inner side in the axial direction of the sealing ring is smaller than the dimension of the ring body arranged on the outer side in the axial direction of the sealing ring; the groove bottom wall of the sealing groove is in a ladder shape and comprises a plurality of step surfaces, the step surfaces are sequentially arranged along the inner and outer directions, and the step surface arranged on the inner side is higher than the step surface arranged on the outer side in two adjacent step surfaces; the step surfaces are in one-to-one correspondence with the ring bodies, and the ring bodies are clamped between the corresponding step surfaces and the second shell in the axial direction of the sealing ring.

In some embodiments, the cross-section of the protrusion is rectangular or semicircular; and/or the cross section of the ring body is elliptical, and the dimension of the cross section of the ring body in the axial direction of the sealing ring is larger than the dimension in the inner and outer directions.

In some embodiments, the ring body is clamped between a groove bottom wall of the seal groove and an end face of the second housing facing the first housing in an axial direction of the seal ring.

In some embodiments, an end face of the first housing facing the second housing is in abutment with an end face of the second housing facing the first housing; and/or the outer side surface of the sealing ring is attached to the outer side groove wall of the sealing groove.

In some embodiments, the first housing has a first annular boss disposed to protrude outward, at least a portion of the seal groove being disposed on the first annular boss; the second shell is provided with a second annular boss protruding outwards, and at least one part of the ring body is clamped between the groove bottom wall of the sealing groove and the second annular boss.

Embodiments of the present disclosure also provide a vehicle.

The vehicle of an embodiment of the present disclosure includes the lidar of any of the embodiments described above.

According to the laser radar disclosed by the embodiment of the disclosure, the sealing groove is formed in the first shell, the sealing ring is arranged in the sealing groove, and the ring body of the sealing ring is clamped between the bottom wall of the sealing groove and the second shell in the axial direction of the sealing ring, so that the sealing between the first shell and the second shell can be realized. Through setting up the arch in the inboard of ring body, when carrying out laser radar's equipment, place the sealing washer in the seal groove after, utilize protruding and the inboard cell wall interference fit of seal groove, can realize the relative fixation between sealing washer and the first casing, from this, avoid the in-process of equipment second casing, the sealing washer takes place to deviate from the seal groove, the part roll-off, empty scheduling problem to can improve laser radar's packaging efficiency and sealing reliability, and laser radar's assembly process is easier to manage and control. Therefore, the laser radar of the embodiment of the disclosure has the advantages of high assembly efficiency, good sealing reliability and the like.

Drawings

Fig. 1 is a perspective view of a lidar of an embodiment of the present disclosure.

Fig. 2 is a cross-sectional view of a lidar of an embodiment of the present disclosure.

Fig. 3 is an enlarged view at a in fig. 2.

Fig. 4 is an exploded view of a lidar of one embodiment of the present disclosure.

Fig. 5 is an exploded view of another view of a lidar of an embodiment of the present disclosure.

Fig. 6 is a front view of the first housing of fig. 5.

Fig. 7 is a cross-sectional view of the first housing of fig. 5.

Fig. 8 is an enlarged view at B in fig. 7.

Fig. 9 is a front view of the seal ring of fig. 5.

Fig. 10 is a cross-sectional view of the seal ring of fig. 5.

Fig. 11 is an enlarged view at C in fig. 10.

Fig. 12 is a front view of the second housing of fig. 5.

Fig. 13 is a cross-sectional view of the second housing of fig. 5.

Reference numerals:

100. a laser radar;

1. a first housing; 11. sealing grooves; 111. a bottom wall of the tank; 1111. a step surface; 112. an inner groove wall; 113. an outer groove wall; 12. a first annular boss; 121. a first connection hole; 13. a first end face;

2. a second housing; 21. a second annular boss; 211. a second connection hole; 22. a second end face;

102. a receiving chamber;

3. a seal ring; 31. a ring body; 311. an outer side surface; 32. a protrusion; 33. a spacer.

Detailed Description

In the related art, a lidar includes a first housing and a second housing, which enclose a mounting cavity, in which a plurality of components, such as a laser light source, a receiver, an optical element, a circuit board, and the like, are mounted. In order to improve the tightness between the first shell and the second shell, a sealing groove is usually arranged on the first shell, a sealing ring is arranged in the sealing groove, and the first shell and the second shell press the sealing ring along the axial direction of the sealing ring, so that the sealing between the first shell and the second shell is realized.

To facilitate the installation of the seal ring within the seal groove of the first housing, the seal ring is typically sized to be larger than the inner groove wall of the seal groove, which results in movement of the seal ring relative to the seal groove after installation of the seal ring into the seal groove and before clamping the seal ring between the second housing and the first housing. The sealing ring can move relative to the sealing groove, so that on one hand, the problem that the sealing ring is easy to deviate from the sealing groove is caused, and an assembler is required to replace the sealing ring at a set position in the sealing groove again, so that the assembly efficiency of the laser radar is affected; on the other hand, the problem that leads to the sealing washer to take place to empty or local roll-off easily is at the in-process of second casing and first casing extrusion sealing washer, and the partly of sealing washer probably radially clamps between first casing and second casing at it, and the sealing washer is flattened along radial promptly, and the axial compression volume that finally leads to the sealing washer is less, influences laser radar's sealing reliability.

Embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, are described in detail below. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present disclosure and are not to be construed as limiting the present disclosure.

As shown in fig. 1 to 5, the lidar 100 of the embodiment of the present disclosure includes a first housing 1, a second housing 2, and a seal ring 3, the first housing 1 and the second housing 2 being connected. The first housing 1 is provided with a sealing groove 11 with a notch facing the second housing 2, and the sealing ring 3 is arranged in the sealing groove 11. The seal ring 3 includes a ring body 31 and a protrusion 32, and the protrusion 32 is provided on the inner side of the ring body 31. The ring body 31 is clamped between the groove bottom wall 111 of the seal groove 11 and the second housing 2 in the axial direction of the seal ring 3, and the boss 32 is in interference fit with the inner groove wall 112 of the seal groove 11. Wherein, inwardly can be understood as: a direction adjacent to the axis of the seal ring 3 on a plane perpendicular to the axis of the seal ring 3; outward can be understood as: in a plane perpendicular to the axis of the sealing ring 3, away from the axis of the sealing ring 3. The protrusion 32 is disposed on the inner side of the ring 31, which can be understood as: the projection 32 is disposed closer to the axis of the seal ring 3 than the ring body 31.

In the lidar 100 of the embodiment of the present disclosure, by providing the seal groove 11 on the first housing 1, the seal ring 3 is provided in the seal groove 11, and the ring body 31 of the seal ring 3 is clamped between the groove bottom wall 111 of the seal groove 11 and the second housing 2 in the axial direction of the seal ring 3, the seal between the first housing 1 and the second housing 2 can be achieved. Through setting up protruding 32 in the inboard of ring body 31, when carrying out the equipment of laser radar 100, place the sealing washer 3 in seal groove 11 after, utilize protruding 32 and the inboard cell wall 112 interference fit of seal groove 11, can realize the relative fixation between sealing washer 3 and the first casing 1, from this, avoid the in-process of equipment second casing 2, sealing washer 3 take place to deviate from seal groove 11, the local roll-off, empty scheduling problem, thereby can improve the packaging efficiency and the sealing reliability of laser radar 100, and the packaging process of laser radar 100 is easier to manage.

Therefore, the lidar 100 of the embodiment of the present disclosure has advantages of high assembly efficiency, good sealing reliability, and the like.

Wherein, enclose and hold chamber 102 between first casing 1 and the second casing 2, hold chamber 102 and be used for installing laser light source, receiver, optical element and circuit board etc..

Optionally, the sealing ring 3 is a rubber ring or a silica gel ring.

In some embodiments, as shown in fig. 2 and 3, the end face of the first housing 1 facing the second housing 2 is fitted with the end face of the second housing 2 facing the first housing 1.

For example, as shown in fig. 3, the end face of the first casing 1 facing the second casing 2 is a first end face 13, the end face of the second casing 2 facing the first casing 1 is a second end face 22, and the second end face 22 is bonded to the first end face 13.

The end surfaces of the first shell 1 and the second shell 2 are attached, so that a closed cavity is defined between the first shell 1 and the second shell 2 through the sealing groove 11, and the sealing ring 3 is integrally positioned in the closed cavity. Therefore, the sealing ring 3 is completely shielded by the first shell 1 and the second shell 2 and is not exposed, on one hand, the aging of the sealing ring 3 caused by solar radiation can be avoided, the corrosion of gas and liquid in the environment to the sealing ring 3 is reduced, and the service life of the sealing ring 3 and the sealing reliability of the sealing ring 3 are prolonged; on the other hand, the seal ring 3 can be prevented from affecting the appearance of the laser radar 100.

In some embodiments, as shown in fig. 3, the outer side surface 311 of the seal ring 3 is in abutment with the outer groove wall 113 of the seal groove 11.

By attaching the outer side surface 311 of the sealing ring 3 to the outer side groove wall 113 of the sealing groove 11, a certain sealing effect is also achieved between the outer side surface 311 of the sealing ring 3 and the outer side groove wall 113 of the sealing groove 11, and the sealing area between the sealing ring 3 and the sealing groove 11 is increased, so that the sealing effect of the laser radar 100 is further improved.

Optionally, the ring body 31 is clamped between the groove bottom wall 111 of the seal groove 11 and the end face of the second housing 2 facing the first housing 1 in the axial direction of the seal ring 3. That is, the end face (second end face 22) of the second housing 2 facing the first housing 1 is a flat face, and the ring body 31 is sandwiched between the groove bottom wall 111 of the seal groove 11 and the second end face 22 of the second housing 2 in the axial direction of the seal ring 3.

By setting the end face of the second casing 2 facing the first casing 1 to be a plane, a groove body for accommodating the sealing ring 3 does not need to be processed on the second casing 2, and only the flatness requirement of the end face of the second casing 2 facing the first casing 1 needs to be ensured, so that the structure of the second casing 2 can be simplified, the processing difficulty of the second casing 2 is reduced, and the manufacturing cost of the laser radar 100 is further reduced.

Of course, in other embodiments, the end face of the second housing 2 facing the first housing 1 may also be provided with an annular groove, which is provided in correspondence with the sealing groove 11, and an annular chamber is defined between the second housing 2 and the first housing 1 by the sealing groove 11 and the annular groove, in which the sealing ring 3 is located.

It will be appreciated that, in the case of providing the seal groove 11 on the first housing 1, in order to ensure the structural strength of the first housing 1, it is necessary to thicken at least the portion of the first housing 1 where the seal groove 11 is provided; at the same time as the thickening of the first housing 1, in order to enable the second housing 2 to cooperate with the first housing 1 to clamp the sealing ring 3, at least the portion of the second housing 2 corresponding to the sealing groove 11 needs to be thickened. If the thickened portions of the first housing 1 and the second housing 2 are respectively disposed inside the first housing 1 and the second housing 2, that is, annular bosses protruding inwards are respectively disposed on the first housing 1 and the second housing 2, the annular bosses need to occupy the inner spaces of the first housing 1 and the second housing 2, resulting in a smaller and irregular volume of the accommodating cavity 102, which is not beneficial to arranging components such as a laser light source, a receiver, an optical element, a circuit board and the like in the accommodating cavity 102.

In some embodiments, as shown in fig. 3 to 8, 12 and 13, the first housing 1 has a first annular boss 12 provided to be convex outward, the second housing 2 has a second annular boss 21 provided to be convex outward, at least a portion of the seal groove 11 is provided to the first annular boss 12, and at least a portion of the ring body 31 is sandwiched between a groove bottom wall 111 of the seal groove 11 and the second annular boss 21.

At least a portion of the seal groove 11 is provided on the first annular boss 12, which can be understood as: a part of the seal groove 11 is arranged on the first annular boss 12, and the other part of the seal groove 11 is arranged on the inner side of the first annular boss 12; alternatively, the seal groove 11 is integrally provided on the first annular boss 12. At least a portion of the ring body 31 is clamped between the groove bottom wall 111 of the seal groove 11 and the second annular boss 21, which can be understood as: a part of the ring body 31 is sandwiched between the groove bottom wall 111 of the seal groove 11 and the second annular boss 21, and another part of the ring body 31 is sandwiched between the groove bottom wall of the seal groove 11 and a part of the second housing 2 located inside the second annular boss 21; alternatively, the ring body 31 is integrally sandwiched between the groove bottom wall of the seal groove 11 and the second annular boss 21.

Through setting up the first annular boss 12 of protrusion outwards at first casing 1, set up the second annular boss 21 of protrusion outwards setting at second casing 2, under the better circumstances of structural strength of assurance first casing 1, can increase the volume of holding chamber 102 and make holding chamber 102 more regular, do benefit to and arrange parts such as laser light source, receiver, optical element and circuit board in holding chamber 102.

In order to make the technical solution of the present disclosure easier to understand, the technical solution of the present disclosure will be further described below by taking the case that the axial direction of the seal ring 3 coincides with the front-rear direction. The front-rear direction is shown in fig. 1 to 5, 7, 8, 10, 11 and 13.

The first housing 1 is provided on the front side of the second housing 2, a seal groove 11 having a notch facing rearward is provided on the rear end surface of the first housing 1, and the seal ring 3 is sandwiched between a groove bottom wall 111 of the seal groove 11 and the front end surface of the second housing 2 in the front-rear direction. Wherein, the rear end of the first shell 1 is provided with a first annular boss 12, and the front end of the second shell 2 is provided with a second annular boss 21.

Alternatively, as shown in fig. 1, 6 and 12, the first annular boss 12 is provided with a plurality of first connection holes 121, the second annular boss 21 is provided with a plurality of second connection holes 211, the first connection holes 121 and the second connection holes 211 are in one-to-one correspondence, and the fasteners pass through the corresponding first connection holes 121 and the second connection holes 211 to achieve connection between the first housing 1 and the second housing 2. Wherein the fastener may be a bolt or a screw. Thereby, the disassembly between the first casing 1 and the second casing 2 is facilitated, thereby facilitating the maintenance of the lidar 100.

Of course, in other embodiments, the first casing 1 and the second casing 2 may be bonded or welded in the scene that no disassembly maintenance is required between the first casing 1 and the second casing 2.

In some embodiments, as shown in fig. 9 to 11, the protrusion 32 is annular, and the dimension of the protrusion 32 in the axial direction of the seal ring 3 is smaller than the dimension of the ring body 31 in the axial direction of the seal ring 3.

Through setting up protruding 32 into annular for after sealing washer 3 is placed in seal groove 11, utilize protruding 32 and the inboard cell wall 112 interference fit of seal groove 11, can realize the relative fixation between the circumference everywhere of sealing washer 3 and first casing 1, prevent more effectively that sealing washer 3 from taking place to deviate from seal groove 11, the part roll-off, empty scheduling problem, be favorable to further improving laser radar 100's sealing reliability. In addition, the dimension of the protrusion 32 in the axial direction of the sealing ring 3 is smaller than the dimension of the ring body 31 in the axial direction of the sealing ring 3, so that the protrusion 32 is more easily elastically deformed relative to the ring body 31, and can be conveniently sleeved on the inner side groove wall 112 of the sealing groove 11 under the condition that the protrusion 32 is in interference fit with the inner side groove wall 112 of the sealing groove 11. Thus, the assembly efficiency of the laser radar 100 can be ensured to be high while improving the sealing reliability of the laser radar 100.

Alternatively, the dimension of the protrusion 32 in the inner-outer direction is 0.1mm to 0.5mm.

It will be appreciated that, when the material of the protrusion 32 is fixed, and the dimension of the protrusion 32 in the axial direction of the seal ring 3 is fixed, the larger the dimension of the protrusion 32 in the inner and outer directions is, the larger the interference between the protrusion 32 and the inner groove wall 112 of the seal groove 11 is, the more the seal ring 3 and the first housing 1 are kept relatively fixed, but the more difficult the protrusion 32 is to be fitted over the inner groove wall 112 is; conversely, the smaller the dimension of the protrusion 32 in the inner-outer direction is, the smaller the interference between the protrusion 32 and the inner groove wall 112 of the seal groove 11 is, and the smaller the difficulty of the protrusion 32 to fit over the inner groove wall 112 is, but the seal ring 3 and the first housing 1 are not easily kept relatively fixed.

By setting the dimension of the protrusion 32 in the inner and outer directions to 0.1mm to 0.5mm, the protrusion 32 is conveniently sleeved on the inner groove wall 112, and meanwhile, the sealing ring 3 and the first shell 1 can be kept relatively fixed more easily, so that the assembly efficiency of the laser radar 100 is improved.

Alternatively, the dimension of the projection 32 in the axial direction of the seal ring 3 is 0.3mm to 1.2mm.

It can be understood that, when the material of the protrusion 32 is certain and the dimension of the protrusion 32 in the inner and outer directions is certain, the larger the dimension of the protrusion 32 in the axial direction of the sealing ring 3 is, the less likely the protrusion 32 is to elastically deform, so that after the protrusion 32 is sleeved on the inner groove wall 112, the sealing ring 3 and the first housing 1 are relatively fixed, but the greater the difficulty of the protrusion 32 being sleeved on the inner groove wall 112 is; conversely, the smaller the size of the inner groove wall 112, the more easily the protrusion 32 is elastically deformed, which makes it easy for the protrusion 32 to be fitted on the inner groove wall 112 by deformation, but after the protrusion 32 is fitted on the inner groove wall 112, the seal ring 3 and the first housing 1 are not easily kept relatively fixed.

By setting the dimension of the protrusion 32 in the axial direction of the sealing ring 3 to be 0.3 mm-1.2 mm, the sealing ring 3 and the first housing 1 can be kept relatively fixed more easily while the protrusion 32 is conveniently sleeved on the inner side groove wall 112, which is beneficial to improving the assembly efficiency of the laser radar 100.

In some embodiments, the number of ring bodies 31 is plural, and the plurality of ring bodies 31 are arranged at intervals along the inner-outer direction.

For example, as shown in fig. 3 and 11, the number of ring bodies 31 is two, and the two ring bodies 31 are arranged at intervals in the inner-outer direction.

By providing the plurality of ring bodies 31, the plurality of ring bodies 31 are clamped between the groove bottom wall 111 of the seal groove 11 and the second housing 2 in the axial direction of the seal ring 3, so that a plurality of seals between the first housing 1 and the second housing 2 can be realized, which is beneficial to further improving the sealing reliability of the laser radar 100. For example, the laser radar 100 can meet the IP67, IP6K9K protection requirements and sealing reliability under the conditions of temperature difference ranging from-40 to 95 ℃ and high altitude change of 0 to 4850 m.

It will be appreciated that the gas and the liquid in the environment enter the accommodating cavity 102 from outside to inside, that is, the gas and the liquid in the environment must first pass through the gap between the outermost ring body 31 and the housing (the first housing 1 or the second housing 2), and after the gas and the liquid in the environment are adjacent to the two ring bodies 31, the gas and the liquid may corrode the sealing ring 3, which results in poor reliability of the sealing ring 3 and affects the sealing reliability of the laser radar 100. Therefore, in order to improve the sealing reliability of the lidar 100, the sealing reliability between the ring 31 provided on the outer side and the housing (the first housing 1 and the second housing 2) is particularly important.

Alternatively, as shown in fig. 3, 8 and 11, of the adjacent two ring bodies 31, the size of the ring body 31 provided on the inner side in the axial direction of the seal ring 3 is smaller than the size of the ring body 31 provided on the outer side in the axial direction of the seal ring 3. The groove bottom wall 111 of the seal groove 11 has a stepped shape including a plurality of step surfaces 1111, the plurality of step surfaces 1111 are sequentially arranged in the inner and outer directions, and of the two adjacent step surfaces 1111, the step surface 1111 provided on the inner side is provided higher than the step surface 1111 provided on the outer side. The step surfaces 1111 are in one-to-one correspondence with the ring bodies 31, and the ring bodies 31 are sandwiched between the corresponding step surfaces 1111 and the second housing 2 in the axial direction of the seal ring 3.

For example, as shown in fig. 3, 8 and 11, the number of ring bodies 31 is two, the groove bottom wall 111 includes two step surfaces 1111, the ring body 31 provided on the inner side is sandwiched between the step surface 1111 provided on the inner side and the second housing 2, and the ring body 31 provided on the outer side is sandwiched between the step surface 1111 provided on the outer side and the second housing 2.

By setting the dimension of the ring body 31 on the inner side in the axial direction of the seal ring 3 to be smaller than the dimension of the ring body 31 on the outer side in the axial direction of the seal ring 3, and setting the step surface 1111 on the inner side to be higher than the step surface 1111 on the outer side, the interference between the ring body 31 on the outer side and the housing (the first housing 1 and the second housing 2) is larger than the interference between the ring body 31 on the inner side and the housing (the first housing 1 and the second housing 2), so that the sealing reliability between the ring body 31 on the outer side and the housing (the first housing 1 and the second housing 2) is better, and the sealing reliability of the laser radar 100 is easier to improve.

Alternatively, as shown in fig. 11, a spacer 33 is provided between two adjacent ring bodies 31, and the two adjacent ring bodies 31 are separated by the spacer.

By providing the spacer 33, a sufficient deformation space can be reserved for the elastic deformation of the two ring bodies 31, thereby further facilitating the assembly of the lidar 100.

Alternatively, the cross section of the protrusion 32 is rectangular or semicircular. The cross section of the protrusion 32 can be understood as: the projection 32 is sectioned by a plane perpendicular to the axis of the seal ring 3.

For example, as shown in fig. 3 and 11, the cross section of the protrusion 32 is rectangular.

By setting the cross section of the protrusion 32 to be rectangular or semicircular, the processing and manufacturing of the protrusion 32 are facilitated, thereby contributing to the reduction of the manufacturing cost of the laser radar 100.

Alternatively, as shown in fig. 3 and 11, the cross section of the ring body 31 is elliptical, and the dimension of the cross section of the ring body 31 in the axial direction of the seal ring 3 is larger than that in the inner-outer direction. The cross section of the ring body 31 can be understood as: the ring body 31 is sectioned by a plane perpendicular to the axis of the seal ring 3.

By setting the cross section of the ring body 31 to be elliptical, and the dimension of the cross section of the ring body 31 in the axial direction of the seal ring 3 is larger than that in the inner-outer direction, the dimension of the ring body 31 in the axial direction of the seal ring 3 is made larger in the case that the entire volume of the ring body 31 is fixed. As a result, the ring body 31 can have a larger interference when clamped between the groove bottom wall 111 and the second housing 2 in the axial direction of the seal ring 3, which is advantageous for further improving the sealing reliability of the laser radar 100.

The assembly process of lidar 100 of the presently disclosed embodiments:

the sealing ring 3 is placed in the sealing groove 11 of the first shell 1, and at the moment, the sealing ring 3 and the first shell 1 are kept relatively fixed by interference fit between the protrusion 32 and the inner groove wall 112 of the sealing groove 11; then, the second housing 2 presses the seal ring 3 and is fixedly connected with the first housing 1. At this time, the protrusion 32 is in interference fit with the inner groove wall 112 of the seal groove 11, the outer side surface 311 of the ring body 31 is attached to the outer groove wall 113 of the seal groove 11, and the ring body 31 is compressed by the groove bottom wall 111 and the end surface of the second housing 2 in the axial direction of the seal ring 3, so that the design compression rate is achieved, and the sealing effect is ensured.

The lidar 100 of the embodiment of the present disclosure has the following advantages:

(1) Multiple seals are adopted, the sealing effect is good, and the protection requirement and the sealing reliability of the laser radar 100 under the large temperature difference range and high altitude change are ensured.

(2) The processing technology is simple, the yield is high, and the cost of parts is low.

(3) The assembly is simple and reliable, the problem of sealing failure caused by falling off, partial sliding out, compression dumping and the like of the sealing ring 3 in the assembly and turnover process is avoided, the assembly efficiency is high, and the production process is easy to control.

(4) The sealing ring 3 is completely shielded by the shell and is not exposed, so that the aging of the sealing ring 3 caused by direct solar radiation is avoided, the corrosion of gas and liquid in the environment to the sealing ring 3 is reduced, the service life is prolonged, and the sealing reliability is improved; while preventing the extrusion of the seal ring 3 from affecting the appearance.

(5) Compared with other types of multiple seals and labyrinth seals, the sealing structure of the laser radar 100 of the embodiment of the disclosure occupies small space and saves space in a cavity. The space utilization rate of the laser radar 100 is improved, and the overall miniaturization and light weight design are facilitated.

The vehicle of the embodiments of the present disclosure includes the lidar 100 of any of the embodiments described above.

Since the lidar 100 of the embodiment of the present disclosure has advantages such as good sealing reliability, the vehicle of the embodiment of the present disclosure has advantages such as good reliability.

While embodiments of the present disclosure have been shown and described above, it should be understood that the above embodiments are illustrative and not to be construed as limiting the present disclosure, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the present disclosure.

Claims (10)

1. A lidar, comprising:

the first shell is connected with the second shell, and a sealing groove with a notch facing the second shell is formed in the first shell;

the sealing ring is arranged in the sealing groove and comprises a ring body and a bulge, the bulge is arranged on the inner side of the ring body, the ring body is axially clamped between the bottom wall of the sealing groove and the second shell, and the bulge is in interference fit with the wall of the inner side groove of the sealing groove.

2. The lidar according to claim 1, wherein the projection is annular, and a dimension of the projection in an axial direction of the seal ring is smaller than a dimension of the ring body in the axial direction of the seal ring.

3. The lidar according to claim 2, wherein the dimension of the projection in the inner-outer direction is 0.1mm to 0.5mm; and/or

The dimension of the bulge in the axial direction of the sealing ring is 0.3 mm-1.2 mm.

4. The lidar of claim 1, wherein the number of rings is plural, and the plural rings are arranged at intervals in the inner-outer direction.

5. The lidar according to claim 4, wherein, of the adjacent two ring bodies, a dimension of the ring body provided on the inner side in the axial direction of the seal ring is smaller than a dimension of the ring body provided on the outer side in the axial direction of the seal ring;

the groove bottom wall of the sealing groove is in a ladder shape and comprises a plurality of step surfaces, the step surfaces are sequentially arranged along the inner and outer directions, and the step surface arranged on the inner side is higher than the step surface arranged on the outer side in two adjacent step surfaces;

the step surfaces are in one-to-one correspondence with the ring bodies, and the ring bodies are clamped between the corresponding step surfaces and the second shell in the axial direction of the sealing ring.

6. The lidar of claim 1, wherein the protrusion has a rectangular or semicircular cross section; and/or

The cross section of the ring body is elliptical, and the dimension of the cross section of the ring body in the axial direction of the sealing ring is larger than the dimension of the cross section of the ring body in the inner and outer directions.

7. The lidar of claim 1, wherein the ring body is sandwiched between a groove bottom wall of the seal groove and an end face of the second housing facing the first housing in an axial direction of the seal ring.

8. The lidar according to any of claims 1 to 7, wherein an end face of the first housing facing the second housing is attached to an end face of the second housing facing the first housing; and/or

And the outer side surface of the sealing ring is attached to the outer side groove wall of the sealing groove.

9. The lidar according to any of claims 1 to 7, wherein the first housing has a first annular boss provided to be convex outward, at least a part of the seal groove being provided to the first annular boss;

the second shell is provided with a second annular boss protruding outwards, and at least one part of the ring body is clamped between the groove bottom wall of the sealing groove and the second annular boss.

10. A vehicle comprising a lidar according to any of claims 1 to 9.