Assembling jig for assembling shading assembly of laser radar

Abstract

The utility model provides an assembling jig for assembling a shading assembly of a laser radar, which comprises a first carrying platform, a second carrying platform, a third carrying platform and a fourth carrying platform, the second carrying table is arranged above the first carrying table, the top surface of the second carrying table is a second carrying plane, one of the first carrying plane and the second carrying plane is used for lap joint of a first anti-dazzling screen of a support of the shading assembly, and the other one is used for lap joint of a second anti-dazzling screen to be assembled; the distance between the second bearing plane and the first bearing plane in the vertical direction is equal to the sum of the thickness of the anti-dazzling screens borne by the first bearing plane and the preset distance, and the height of the second bearing table in the vertical direction is not larger than the vertical distance between the first anti-dazzling screen and any second anti-dazzling screen. Therefore, the first bearing plane and the second bearing plane can play a role in positioning, so that the relative position precision between the first anti-dazzling screen and the second anti-dazzling screen is ensured. The shading component assembled by using the assembling jig is good in shading effect, and high detection accuracy of the laser radar is ensured.

Description

Technical Field

[0001] The utility model relates to the field of laser technology, and in particular to an assembly jig for assembling a light shielding component of a laser radar. Background Art

[0002] LiDAR is a device that measures the distance, speed and other parameters of a target object by sending a laser to the surface of an object and then measuring the arrival time of the reflected light beam. It is widely used in scenarios such as autonomous driving. The basic working principle of LiDAR is as follows: the light emitted by the laser source is emitted to the surface of the target object along a specified direction. The light is reflected by the surface of the target object to form an echo light. The echo light enters the interior of the LiDAR and is received by the receiving device. The echo light is then analyzed to calculate the distance, speed and other parameters relative to the target object. In the actual process of sending and receiving laser signals, it is impossible for the echo light to enter the interior of the LiDAR completely along the preset echo direction. The echo light that deviates from the preset echo direction will form stray light, affecting the detection accuracy.

[0003] In order to reduce the stray light received by the receiving device, some related technologies also provide a shading component in the laser radar. The shading component has a plurality of shading plates arranged at intervals along a direction perpendicular to a preset echo direction. The shading plates are arranged in a direction parallel to the preset echo direction. The shading plates can block echo light in non-preset echo directions.

[0004] However, using this method, the shading effect of the shading component is not good, resulting in low detection accuracy. Utility Model Content

[0005] The utility model aims to at least solve the technical problem that the existing laser radar has low detection accuracy, and proposes an assembly jig for assembling a light shielding component of the laser radar.

[0006] In order to achieve the purpose of the utility model, an assembly fixture of a shading component for a laser radar is provided, the shading component includes a bracket and at least one second shading sheet, the bracket includes a first shading sheet and two connecting plates arranged opposite to each other along a first horizontal direction, the two ends of the first shading sheet are respectively fixedly connected to the two connecting plates, each of the connecting plates is provided with at least one connecting position; each of the second shading sheets corresponds to a connecting position on the connecting plate, the two ends of the second shading sheet are respectively assembled and connected to the corresponding connecting positions on the two connecting plates, the first shading sheet and all the second shading sheets are parallel to each other and arranged at intervals along the vertical direction;

[0007] The assembly jig includes a first connecting portion, a first carrier, a second carrier, a first force-applying structure and a second force-applying structure. The top surface of the first carrier is a first bearing plane. The second carrier is arranged above the first carrier and opposite to the first carrier. The side of the second carrier facing away from the first carrier is a second bearing plane. One of the first bearing plane and the second bearing plane is used for placing a first shading sheet, and the other is used for placing a second shading sheet. In the vertical direction, the distance between the second bearing plane and the first bearing plane is equal to the sum of the thickness of the shading sheet corresponding to the first bearing plane and the preset distance. The height of the second carrier in the vertical direction is less than or equal to the distance between the first shading sheet and any second shading sheet in the vertical direction. The preset distance is equal to the vertical distance between the first shading sheet and the second shading sheet.

[0008] The first force-applying structure is configured to apply a vertical downward external force to the light shielding sheet correspondingly carried by the first carrying plane;

[0009] The second force-applying structure is configured to apply a vertical downward external force to the light-shielding sheet correspondingly carried by the second carrying plane.

[0010] In some possible embodiments, the first force-applying structure includes an air suction pipe and an air extraction device, a suction flow channel is formed inside the first carrier, an inlet end of the suction flow channel is exposed on the first carrying plane, and an outlet end is connected to the air extraction device through the air suction pipe, and the air extraction device can drive air to flow from the inlet end to the outlet end, so as to form a negative pressure in the suction flow channel;

[0011] The second force-applying structure includes a first connecting part and a pressure block, wherein the pressure block is provided with a second connecting part, and the second connecting part is detachably connected to the first connecting part; when the second connecting part is connected to the first connecting part, the bottom surface of the pressure block is located above the second bearing plane and the distance between the two along the vertical direction is equal to the thickness of the shading film corresponding to the second bearing plane.

[0012] In some possible embodiments, the assembly jig further includes a tooling table, and the first carrier, the second carrier, and the first connecting portion are all fixedly mounted on the tooling table.

[0013] In some possible embodiments, the tooling table includes a base plate and a vertical plate erected on the base plate, the first carrier is fixed on the base plate, and the first carrier, the second carrier and the first connecting portion are arranged on the same side of the vertical plate.

[0014] In some possible embodiments, the first carrier and the second carrier are both fixedly connected to the vertical plate, the outlet end of the suction channel is exposed on the side of the first carrier facing the vertical plate, a channel is provided on the vertical plate, the channel is connected to the outlet end, and one end of the suction pipe extends into the channel from the side of the vertical plate facing away from the first carrier.

[0015] In some possible embodiments, the first shading sheet and all the second shading sheets are main shading sheets, and the main shading sheets have a front and a back side opposite to each other in the vertical direction, and the front side is used to face the echo light in a non-preset echo direction. The shading assembly also includes a side shading sheet, and the side shading sheet is located on the front side of all the main shading sheets; along the vertical direction, from the front side to the back side of the main shading sheets, the first main shading sheet stacked and the side shading sheets are connected and formed as one piece, and the size of the orthographic projection of the side shading sheet on the front side of the first shading sheet in the second horizontal direction is W1; wherein the second horizontal direction is perpendicular to the first horizontal direction; when the second connecting portion is connected to the first connecting portion, the pressing block is opposite to the vertical plate and an avoidance gap is formed between the pressing block and the vertical plate, and the size of the avoidance gap in the second horizontal direction is ε, and ε and W1 satisfy: ε≥W1.

[0016] In some possible embodiments, the assembly jig further includes a workbench, the tooling table is stacked above the workbench, and the tooling table is fixedly connected to the workbench.

[0017] In some possible embodiments, one of the first connection part and the second connection part is a magnet, and the other is configured to be magnetically attracted to the magnet.

[0018] In some possible embodiments, the assembly jig further includes a mounting seat, the mounting seat is provided with a first groove, and the first connecting portion is embedded in the first groove; and / or, the pressing block is provided with a second groove, and the second connecting portion is embedded in the second groove.

[0019] In some possible embodiments, a length of at least the second platform among the first platform and the second platform along the first horizontal direction is smaller than a minimum distance between two connecting plates along the first horizontal direction.

[0020] The utility model has the following beneficial effects:

[0021] When the assembly jig provided by the utility model is used to assemble the bracket and the second light shielding sheet, by placing one of the first light shielding sheet and the second light shielding sheet of the bracket on the first bearing plane and the other on the second bearing plane, and assembling and connecting the second light shielding sheet to the corresponding connection position on the bracket, the first bearing plane and the second bearing plane can play a positioning role to ensure the relative position accuracy between the first light shielding sheet of the bracket and the second light shielding sheet assembled and connected to the bracket. In this way, when the light shielding assembly assembled by the assembly jig is applied to the laser radar, the relative position accuracy between the first light shielding sheet and any one of the second light shielding sheets in the light shielding assembly can be ensured, and the light shielding assembly has a high installation accuracy.

[0022] Therefore, the influence of the low relative position accuracy between the first shading plate and any second shading plate on the shading effect of the shading assembly can be reduced or eliminated, so as to reduce the possibility of stray light entering the receiving device of the laser radar, thereby significantly improving the detection accuracy of the laser radar. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a laser radar proposed for related technologies;

[0024] Figure 2 A schematic diagram of the three-dimensional structure of a light shielding component assembled using an assembly jig according to an embodiment of the present disclosure;

[0025] Figure 3 for Figure 2 An exploded schematic diagram of a shading component;

[0026] Figure 4 To have Figure 2 A partial schematic diagram of a laser radar with a light shielding assembly shown;

[0027] Figure 5 for Figure 2 A cross-sectional schematic diagram of the shading assembly shown;

[0028] Figure 6 A schematic diagram of the three-dimensional structure of an assembly fixture provided by an embodiment of the present disclosure in a first state Figure 1 ;

[0029] Figure 7 A schematic diagram of the three-dimensional structure of an assembly fixture provided by an embodiment of the present disclosure in the second state Figure 1 ;

[0030] Figure 8 for Figure 7 A schematic diagram of a front cross-section of an assembly jig shown;

[0031] Fig. 9 for Figure 7 A schematic side cross-sectional view of the assembly jig shown;

[0032] Fig.10 A schematic diagram of an application of an assembly jig provided by an embodiment of the present disclosure for assembling an assembly jig provided with a second light shielding sheet;

[0033] FIG. 11( a ) is a schematic front cross-sectional view of an assembly jig for assembling a bracket and a first second light shielding sheet in an embodiment of the present disclosure;

[0034] FIG11( b ) is a schematic front cross-sectional view of an assembly jig for assembling a bracket and a second light shielding sheet in an embodiment of the present disclosure;

[0035] Fig.1211( a ) is a schematic diagram of a three-dimensional structure of an assembly fixture used to assemble a bracket and a first second light shielding sheet;

[0036] Fig.13 11( a ) is a schematic front cross-sectional view of the assembly fixture shown in FIG. 11( a ) being applied to assembling the bracket and the first second light shielding sheet;

[0037] Fig.14 11( a ) is a schematic side cross-sectional view of the assembly fixture shown in FIG. 11( a ) being applied to assembling the bracket and the first second light shielding sheet;

[0038] Fig.15 11( b ) is a schematic diagram of a three-dimensional structure of an assembly fixture used to assemble a bracket and a second light shielding sheet;

[0039] Fig.16 11( b ) is a schematic front cross-sectional view of the assembly fixture shown in FIG. 11( b ) being applied to assembling the bracket and the second light shielding sheet;

[0040] Fig.17 11( b ) is a side cross-sectional schematic diagram of the assembly fixture shown in FIG. 11( b ) being applied to assemble the bracket and the second light shielding sheet;

[0041] Fig.18 for Figure 7 An exploded schematic diagram of the assembly jig shown;

[0042] Fig.19 for Figure 6 The three-dimensional structure of the assembly fixture shown Figure 2 ;

[0043] Fig. 20 for Fig.19 A schematic side cross-sectional view of the assembly jig shown;

[0044] Fig.21 for Figure 7 The three-dimensional structure of the assembly fixture shown Figure 2 .

[0045] List of reference numerals:

[0046] 100-shading assembly; 110-first shading sheet; 120-side shading sheet; 130-reinforcement rib; 140-connecting plate; 150-bracket; 160-second shading sheet; 160a-first second shading sheet; 160b-second second shading sheet;

[0047] 200-assembly jig; 210-first carrier; 211-suction channel; 220-second carrier; 230-mounting seat; 231-first connecting portion; 232-first groove; 240-pressing block; 241-second connecting portion; 250-tooling table; 251-base plate; 252-vertical plate; 253-channel; 260-intake pipe; 270-adhesive layer; 280-avoidance gap;

[0048] 300-Screws. DETAILED DESCRIPTION

[0049] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions in some embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments provided by the present disclosure, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present disclosure.

[0050] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms thereof, such as the third person singular form "comprises" and the present participle form "comprising", are to be interpreted as open, inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present disclosure. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics may be included in any one or more embodiments or examples in any appropriate manner.

[0051] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, unless otherwise specified, "plurality" means two or more.

[0052] “At least one of A, B, and C” has the same meaning as “at least one of A, B, or C” and both include the following combinations of A, B, and C: A only, B only, C only, the combination of A and B, the combination of A and C, the combination of B and C, and the combination of A, B, and C.

[0053] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0054] As used herein, "parallel", "perpendicular", and "equal" include the situations described and situations similar to the situations described, and the range of the similar situations is within the acceptable deviation range, wherein the acceptable deviation range is determined by a person of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system). For example, "parallel" includes absolute parallelism and approximate parallelism, wherein the acceptable deviation range of approximate parallelism may be, for example, a deviation within 5°; "perpendicular" includes absolute perpendicularity and approximate perpendicularity, wherein the acceptable deviation range of approximate perpendicularity may also be, for example, a deviation within 5°. "Equal" includes absolute equality and approximate equality, wherein the acceptable deviation range of approximate equality may be, for example, the difference between the two equalities is less than or equal to 5% of either one.

[0055] Exemplary embodiments are described herein with reference to cross-sectional views and / or plan views that are idealized exemplary drawings. In the drawings, the dimensions of some components are adjusted for clarity. Therefore, variations in shape relative to the drawings due to, for example, manufacturing techniques and / or tolerances are conceivable. Therefore, the exemplary embodiments should not be interpreted as being limited to the shapes of the regions shown herein, but include deviations in shape due to, for example, manufacturing. Therefore, the regions shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the actual shapes of regions of the device, and are not intended to limit the scope of the exemplary embodiments.

[0056] Figure 1 The following is a schematic diagram of the structure of a laser radar proposed in the related technology. Figure 1As shown, the laser radar includes a transmitting device 400a and a receiving device 500a. The transmitting device 400a is used to emit an outgoing light. The outgoing light passes through the transceiver port of the laser radar to the outside of the shell and is projected onto the surface of the target object. After being reflected by the surface of the target object, an echo light is formed. The echo light enters the laser radar through the transceiver port and is received by the receiving device 500a. It should be understood that the echo light may be refracted by obstacles when propagating along the expected path, or the light beam that has not passed through the rotating mirror 600a enters the receiving device 500a through the upper and lower sides of the beam splitter 700a, forming stray light. The stray light deviates from the preset receiving direction (i.e., the preset echo direction) of the receiving device 500a. Among them, the light incident along the preset echo direction is suitable for the processing algorithm of the receiving device 500a for the echo light. The stray light will interfere with the processing of the echo light by the receiving device 500a, i.e., form noise points, and distort the detection results.

[0057] The laser radar is also provided with three shading plates 110a, which are parallel to the preset echo direction ( Figure 1 In the figure, A1 is arranged near the receiving device 500a, and three light shielding sheets 110a are arranged at intervals along the thickness direction thereof. In this way, during the application, the echo direction ( Figure 1 The echo light (shown as A2) is projected onto the shading sheet 110a, a portion of the stray light will be absorbed by the shading sheet 110a, and the other portion will be reflected between two adjacent shading sheets 110a and then attenuated, thereby reducing the stray light in the echo light received by the receiving device 500a.

[0058] After careful research, the inventors found that the laser radar of the related art lacks installation positioning of the light shielding sheet 110a, and the installation accuracy of the light shielding assembly composed of multiple light shielding sheets 110a is low, resulting in a deviation between the actual distance between two adjacent light shielding sheets 110a along their thickness direction and the theoretical distance. In this way, there is still a lot of stray light that can enter the receiving device 500a. Among them, the theoretical distance refers to the distance between two adjacent light shielding sheets 110a along their thickness direction when the light shielding function requirements are met.

[0059] Figure 2 A schematic diagram of the three-dimensional structure of a shading component assembled by using an assembly jig according to an embodiment of the present disclosure, Figure 3 for Figure 2 Schematic diagram of the exploded view of the shading component, Figure 4 To have Figure 2 A partial schematic diagram of a laser radar with a light shielding component is shown. Figure 5 for Figure 2 Based on this, the inventors conceived a shading component 100, such as Figures 2 to 5As shown, the shading assembly 100 includes two connecting plates 140 and a first shading sheet 110. The two connecting plates 140 are arranged opposite to each other along a first horizontal direction. Both ends of the first shading sheet 110 are fixedly connected to the two connecting plates 140 respectively. The thickness direction of the first shading sheet 110 is perpendicular to the first horizontal direction. The first shading sheet 110 and the two connecting plates 140 together constitute a bracket 150.

[0060] The shading assembly 100 also includes two second shading sheets 160, and each connecting plate 140 is also provided with two connection positions corresponding to the two second shading sheets 160, each connection position is spaced apart from the first shading sheet 110 in the thickness direction of the first shading sheet 110, one end of the second shading sheet 160 is assembled and connected to the corresponding connection position on one of the connecting plates 140, and the other end of the second shading sheet 160 is assembled and connected to the corresponding connection position on the other connecting plate 140. In other words, the second shading sheet 160 is connected to the bracket 150 by assembly (such as snap-on, screw-on or plug-in). In addition, the first shading sheet 110 and all the second shading sheets 160 are arranged at intervals along the vertical direction, and the first shading sheet 110 and all the second shading sheets 160 are parallel to each other and are arranged parallel to the second horizontal direction. It can be understood that the first horizontal direction, the vertical direction and the second horizontal direction are perpendicular to each other, and the vertical direction is parallel to the thickness direction of the first shading sheet 110. It should be noted that when the shading component 100 is applied to a laser radar, the second horizontal direction is parallel to a preset receiving direction (i.e., a preset echo direction) of the receiving device. Figure 4 As shown by the dotted arrows, the first light shielding sheet 110 and the second light shielding sheet 160 can block the echo light in a non-preset echo direction.

[0061] When the shading assembly 100 is applied to a laser radar, the second shading sheet 160 can be pre-assembled with the bracket 150 outside the laser radar to pre-assemble the shading assembly 100, and then the pre-assembled shading assembly 100 can be installed inside the laser radar. It can be understood that the shading assembly 100 provides support for the second shading sheet 160 through the bracket 150, and the second shading sheet 160 can be assembled and connected with the corresponding connection position on the bracket 150, that is, the connection relationship between the bracket 150 and the second shading sheet 160 is used to realize the installation and positioning of the second shading sheet 160.

[0062] However, due to the existence of processing errors and manufacturing errors, the error in the vertical distance between the first shading sheet 110 and the second shading sheet 160 on the pre-installed shading assembly 100 may be large, that is, the relative position accuracy between the first shading sheet 110 and the second shading sheet 160 is low, and the installation accuracy of the shading assembly 100 is low, which in turn affects the shading effect of the shading assembly 100.

[0063] In order to ensure a high relative position accuracy between the first shading sheet 110 and the second shading sheet 160, the embodiment of the present disclosure proposes an assembly jig for assembling the shading component 100 of the laser radar, which is used to assemble the shading component 100. The structure of the assembly jig provided in the embodiment of the present disclosure is described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] For ease of understanding, the shading component 100 is first introduced in detail herein.

[0065] The first shading sheet 110 and the second shading sheet 160 can both be used as main shading sheets to block the echo light in the non-preset echo direction. The main shading sheet has a front side and a back side arranged opposite to each other in the vertical direction. When the shading assembly 100 is installed inside the laser radar, the front side is close to the transceiver port of the laser radar, and the front side can face the non-preset echo direction (refer to Figure 1 A2) in the middle to block the echo light in the non-preset echo direction.

[0066] Along the first horizontal direction, the minimum distance between the two connecting plates 140 is L1. Figures 2 to 5 , the thickness direction of the two connecting plates 140 can be parallel to the first horizontal direction, then the connecting plates 140 are vertically connected to the first light shielding sheet 110, at this time, the distance between the two connecting plates 140 is equal everywhere and is L1. For another example, the connecting plates 140 can also form an angle with the first light shielding sheet 110, that is, the connecting plates 140 are inclined to the first light shielding sheet 110, at this time L1 is the distance between the two ends of the connecting plates 140 that are close to each other. The size of the connecting plate 140 in the vertical direction is H1.

[0067] The number of the second light shielding sheets 160 is not limited to Figure 2 The two shown may also be one or three or more, and the specific design can be based on demand and actual working conditions.

[0068] exist Figure 3 In the specific example shown, the first light shielding sheet 110 and the two connecting plates 140 can be integrally formed. That is, the bracket 150 is an integral structure. Alternatively, in other embodiments, the two ends of the first light shielding sheet 110 are assembled and connected to the two connecting plates 140 (e.g., snap-fit, screw-fit, or plug-fit).

[0069] In some embodiments, please refer to Figures 2 to 4, the shading assembly 100 also includes a side shading sheet 120, which is located on the front side of the first shading sheet 110 and all the second shading sheets. Along the vertical direction, from the front side to the back side of the first shading sheet 110, one end of the first stacked main shading sheet is connected to the side shading sheet 120 and formed as one piece. Therefore, the side shading sheet 120 can block the stray light reflected from the front side of the first stacked main shading sheet. Figures 2 to 4 In the example shown, when the first stacked main shading sheet is the first shading sheet 110 and the bracket 150 is an integrated structure, the two connecting plates 140 , the first shading sheet 110 and the side shading sheet 120 can be integrally formed into the bracket 150 .

[0070] The size of the orthographic projection of the side shading sheet 120 on the front of the first shading sheet 110 along the second horizontal direction is W1. One end of the first stacked main shading sheet can be vertically connected to the side shading sheet 120. At this time, the thickness direction of the side shading sheet 120 is parallel to the second horizontal direction. At this time, the thickness of the side shading sheet 120 is equal to W1. Alternatively, an angle is formed between the first stacked main shading sheet and the side shading sheet 120.

[0071] On the basis of the embodiment with the side shading sheet 120, a plurality of reinforcing ribs 130 are further provided between the first stacked main shading sheet and the side shading sheet 120, and the plurality of reinforcing ribs 130 are sequentially arranged at intervals along the first horizontal direction. Such a design is conducive to improving the structural strength and structural reliability of the shading assembly 100. The orthographic projection of the reinforcing rib 130 on the front of the first shading sheet 110 along the second horizontal direction has a size W2.

[0072] Figure 6 A schematic diagram of the three-dimensional structure of an assembly fixture provided by an embodiment of the present disclosure in a first state Figure 1 , Figure 7 A schematic diagram of the three-dimensional structure of an assembly fixture provided by an embodiment of the present disclosure in the second state Figure 1 , Figure 8 for Figure 7 The schematic diagram of the main cross section of the assembly fixture shown, Fig. 9 for Figure 7 A schematic side cross-sectional view of the assembly jig is shown. Figures 6 to 9, the assembly jig 200 includes a first stage 210 and a second stage 220, and the second stage 220 is arranged above the first stage 210 and opposite to the first stage 210. For a clear understanding, in the various figures of the embodiments of the present disclosure, the X-axis, the Y-axis, and the Z-axis represent the first horizontal direction, the second horizontal direction, and the vertical direction of the assembly jig 200, respectively. The size of the first stage 210 in the first horizontal direction X is L2, and the size of the second stage 220 in the first horizontal direction X is L3, and L2 and L3 may be equal or unequal. When L2 and L3 are equal, the orthographic projections of the first stage 210 and the second stage 220 in the XY plane may also completely overlap.

[0073] The top surface of the first carrier 210 is the first bearing plane, and the second carrier 220 has a second bearing plane and a non-bearing plane that are arranged opposite to each other along the vertical direction Z. The second bearing plane faces away from the first bearing plane, and the non-bearing plane is located between the first bearing plane and the second bearing plane. The distance between the non-bearing plane and the first bearing plane in the vertical direction Z is d1, the height of the second carrier 220 in the vertical direction Z is d2, and the distance between the first bearing plane and the second bearing plane in the vertical direction Z is D, and D=d1+d2.

[0074] The assembly fixture 200 also includes a first force-applying structure, which is configured to apply a vertical downward external force to the shading sheet correspondingly carried by the first carrying plane.

[0075] The assembly fixture 200 further includes a second force-applying structure configured to apply a vertical downward external force to the light shielding sheet correspondingly carried by the second carrying plane. Figures 6 to 9 As shown, the second force-applying structure may include a first connection portion 231 and a pressing block 240, wherein the pressing block 240 is provided with a second connection portion 241, and the second connection portion 241 is detachably connected to the first connection portion 231, so that the assembly jig 200 has a first state and a second state. In the first state, as Figure 6 As shown, the first connection portion 231 is separated from the second connection portion 241, and the pressing block 240 is not installed above the second carrier 220. In the second state, as shown in FIG. Figure 7 As shown, the first connection portion 231 is connected to the second connection portion 241 , and the pressing block 240 is installed above the second carrier 220 .

[0076] And, if Figure 8 and Fig. 9 As shown, in the second state, there is still a gap between the bottom surface of the pressing block 240 and the second bearing plane, and the distance between the bottom surface of the pressing block 240 and the second bearing plane along the vertical direction Z is d3.

[0077] Embodiment 1

[0078] The assembly jig 200 of this embodiment is introduced by taking the shading assembly 100 assembled by the assembly jig 200 as an example, wherein the shading assembly 100 has a second shading sheet 160. The vertical distance between the first shading sheet 110 and the second shading sheet 160 is set to δ, and the preset distance ΔD is equal to δ, d2≤δ.

[0079] If the thickness T of the first light shielding film 110 is not equal to the thickness t of the second light shielding film, D=T+δ, or D=t+δ.

[0080] When D=T+δ, T≤d1, t=d3. Fig.10 As shown in (a), the assembly process using the assembly fixture 200 is roughly as follows: providing a bracket 150 and a second shading sheet 160; moving the bracket 150 along the second horizontal direction Y so that the bracket 150 is placed on the first carrier 210 and the first shading sheet 110 is in contact with the first bearing plane, and the two connecting plates 140 are respectively located on both sides of the second carrier 220 in the first horizontal direction X, and moving the second shading sheet 160 along the second horizontal direction Y so that the second shading sheet 160 is placed on the second carrier 220. On the bearing plane, the two ends of the second light shielding sheet 160 are assembled and connected to the corresponding connection positions on the two connecting plates 140 of the bracket 150; the second connecting portion 241 is connected to the first connecting portion 231. Since d3 is equal to the thickness t of the second light shielding sheet 160, the pressing block 240 at this time presses on the side of the second light shielding sheet 160 that is away from the first light shielding sheet 110, and the pressing block 240 applies pressure to the second light shielding sheet 160; a vertical downward external force is applied to the first light shielding sheet 110 through the first force-applying structure. Here, it should be pointed out that since T≤d1, when the first light shielding sheet 110 is placed on the first bearing plane, the first light shielding sheet 110 will not interfere with the second carrier 220.

[0081] When D=t+δ, t≤d1, T=d3. Fig.10As shown in (b), the assembly process using the assembly fixture 200 is roughly as follows: provide a bracket 150 and a second shading sheet 160; move the second shading sheet 160 along the second horizontal direction Y so that the second shading sheet 160 is placed on the first bearing plane, move the bracket 150 along the second horizontal direction Y so that the bracket 150 is placed on the second carrier 220 and the first shading sheet 110 is in contact with the second bearing plane, and assemble and connect the two ends of the second shading sheet 160 to the corresponding connecting positions on the two connecting plates 140 of the bracket 150; connect the second connecting portion 241 to the first connecting portion 231, and since d3 is equal to the thickness T of the first shading sheet 110, the pressing block 240 at this time presses on the side of the first shading sheet 110 facing away from the second shading sheet 160, and the pressing block 240 applies pressure to the first shading sheet 110; and apply a vertical downward external force to the second shading sheet 160 through the first force-applying structure. Here, it should be pointed out that, since t≤d1, when the second light shielding sheet 160 is placed on the first carrying plane, the second light shielding sheet 160 will not interfere with the second carrier 220 .

[0082] If the thickness T of the first light shielding sheet 110 is equal to the thickness t of the second light shielding sheet 160, T=t=d3≤d1, D=T+δ=t+δ. When the assembling fixture 200 of this embodiment is used to assemble the light shielding assembly 100, the first light shielding sheet 110 can be placed on the first bearing plane and the second light shielding sheet 160 can be placed on the second bearing plane, or the second light shielding sheet 160 can be placed on the first bearing plane and the first light shielding sheet 110 can be placed on the second bearing plane.

[0083] It should be noted that in the embodiment where the first shading sheet 110 is connected to the connecting plate 140 at one end in the vertical direction and the two connecting plates 140 are located on the same side of the first shading sheet 110, during assembly, Fig.10 As shown in (a), the bracket 150 is placed on the first carrier 210 with the end of the connecting plate 140 away from the first light shielding sheet 110 facing upward, that is, the bracket 150 is arranged on the first carrier 210 in a "└┘" shape. In order to avoid interference between the connecting plate 140 and the second carrier 220, L3<L1, so that when the bracket 150 is placed on the first carrier 210, the second carrier 220 can be located between the two connecting plates 140.

[0084] Or, when assembling, Fig.10As shown in (b), the bracket 150 is placed on the second stage 220 with the end of the connecting plate 140 away from the first light shielding sheet 110 facing downward, that is, the bracket 150 is placed on the second stage 220 in a "ㄇ" shape. In order to avoid interference between the connecting plate 140 and the first stage 210 and the second stage 220, L2<L1, and L3<L1, so that when the bracket 150 is placed on the second stage 220, the first stage 210 and the second stage 220 can be located between the two connecting plates 140. In addition, H1 can also be smaller than the distance H2 between the second carrying plane and the bottom surface of the first stage 210 in the vertical direction Z, so that the height of the second stage 220 is sufficient for the bracket 150 to be placed.

[0085] Embodiment 2

[0086] The shading assembly 100 assembled by using the assembly fixture 200 is as follows: Figures 2 to 5 As shown in the figure, the shading assembly 100 has two second shading sheets 160. For the convenience of description, a second shading sheet 160 close to the first shading sheet 110 is called the first second shading sheet 160a, and a second shading sheet 160 far from the first shading sheet 110 is called the second second shading sheet 160b. Figure 5 As shown, the vertical distance between the first light shielding film 110 and the first second light shielding film 160a is set to be k1, and the vertical distance between the first second light shielding film 160a and the second second light shielding film 160b is set to be k2.

[0087] In this embodiment, the first assembly process of the second shading sheet 160a and the bracket 150 and the second assembly process of the second shading sheet 160b and the bracket 150 can be respectively implemented by two assembly jigs 200, and the distance D between the first bearing plane and the second bearing plane on the two assembly jigs 200 is not equal.

[0088] FIG11(a) is a schematic diagram of the front cross-section of the assembly jig 200 used to assemble the bracket 150 and the first second shading sheet 160a in the embodiment of the present disclosure. The distance D between the first bearing plane and the second bearing plane in the vertical direction Z in the assembly jig 200 shown in FIG11(a) can refer to the first embodiment, except that the present embodiment replaces the thickness t of the second shading sheet 160 of the first embodiment with the thickness t1 of the first second shading sheet 160a, and replaces the preset distance ΔD with equal to k1. That is, in the assembly jig 200 used to assemble the bracket 150 and the first second shading sheet 160a, D=T+k1. Or, D=t1+k1.

[0089] When D=T+k1, T≤d1, k1≥d2, t1=d3. When the assembly jig 200 is used to assemble the bracket 150 and the first second shading sheet 160a, the bracket 150 is placed on the first carrier 210, and the first second shading sheet 160a is placed on the second bearing plane. When D=t1+k1, t1≤d1, k1≥d2, T=d3. When the assembly jig 200 is used to assemble the bracket 150 and the first second shading sheet 160a, the bracket 150 is placed on the second carrier 220, and the first second shading sheet 160a is placed on the first bearing plane.

[0090] FIG11( b) is a schematic diagram of the front cross-section of the assembly jig 200 used to assemble the bracket 150 and the second light shielding sheet 160b in the embodiment of the present disclosure. The distance D between the first bearing plane and the second bearing plane in the vertical direction Z in the assembly jig 200 shown in FIG11( b) can refer to the first embodiment, except that the present embodiment replaces the thickness t of the second light shielding sheet 160 of the first embodiment with the thickness t2 of the second light shielding sheet 160b, and replaces the preset distance ΔD with a thickness equal to k1, the sum of the thickness t1 of the first second light shielding sheet 160a and k2. That is, in the assembly jig 200 used to assemble the bracket 150 and the second second light shielding sheet 160b, D=T+k1+t1+k2. Or, D=t2+k1+t1+k2.

[0091] When D=T+k1+t1+k2, T+t1+k1≤d1, k2≥d2, t2=d3. When the assembly jig 200 is used to assemble the bracket 150 and the second shading sheet 160b, the bracket 150 is placed on the first carrier 210, and the second shading sheet 160b is placed on the second bearing plane. D=t2+k1+t1+k2, t2+t1+k2≤d1, k1≥d2, T=d3. When the assembly jig 200 is used to assemble the bracket 150 and the second shading sheet 160b, the bracket 150 is placed on the second carrier 220, and the second shading sheet 160b is placed on the first bearing plane.

[0092] In the assembly process of the first second light shielding sheet 160a and the bracket 150, and the assembly process of the second second light shielding sheet 160b and the bracket 150, the bracket 150 is set on the second carrier 220 in a "ㄇ" shape. The assembly process of the light shielding assembly 100 with two second light shielding sheets 160 can refer to Figures 12 to 17 , specifically including the following steps, from top to bottom, assembling each second light shielding sheet 160 in sequence. Among them, Fig.12 FIG. 11( a ) is a schematic diagram of a three-dimensional structure of an assembly fixture 200 used to assemble a bracket 150 and a first second light shielding sheet 160 a . Fig.13FIG. 11( a ) is a schematic front cross-sectional view of the assembly fixture 200 used to assemble the bracket 150 and the first second light shielding sheet 160 a . Fig.14 FIG. 11( a ) is a side cross-sectional schematic diagram of the assembly fixture 200 used to assemble the bracket 150 and the first second light shielding sheet 160 a . Fig.15 FIG. 11( b ) is a schematic diagram of a three-dimensional structure of an assembly fixture 200 used to assemble a bracket 150 and a second light shielding sheet 160 b . Fig.16 FIG. 11( b ) is a schematic front cross-sectional view of the assembly fixture 200 used to assemble the bracket 150 and the second light shielding sheet 160 b . Fig.17 11( b ) is a side cross-sectional schematic diagram of the assembly fixture 200 used to assemble the bracket 150 and the second light shielding film 160 b .

[0093] Step 1, such as Figure 12 to Figure 14 As shown, the first second light shielding sheet 160a is moved along the second horizontal direction Y, so that the first second light shielding sheet 160a is set on the first bearing plane of the assembly fixture 200 shown in FIG11(a). The bracket 150 is moved along the second horizontal direction Y, so that the bracket 150 is set on the second bearing plane of the assembly fixture 200 shown in FIG11(a), and the first second light shielding sheet 160a is inserted into the bracket 150; the pressing block 240 is moved to the top of the second carrier 220 and the second connecting portion 241 is aligned with the first connecting portion 231, and the first connecting portion 231 is connected to the second connecting portion 241. Since T=d3, the pressing block 240 is pressed against the first light shielding sheet 110, and the pressing block 240 applies pressure to the first light shielding sheet 110; a vertical downward external force is applied to the first second light shielding sheet 160a through the first force-applying structure.

[0094] Step 2, apply liquid glue to the plug-in connection between the bracket 150 and the first second shading sheet 160a, and dry the liquid glue to form an adhesive layer 270, so that the bracket 150 and the first second shading sheet 160a are still bonded and connected, and the bracket 150 and the first second shading sheet 160a form a whole.

[0095] Step 3, disassemble and separate the second connecting part 241 from the first connecting part 231, move the pressing block 240 upward, and then move the bracket 150 and the first second shading sheet 160a as a whole along the second horizontal direction Y, so that the bracket 150 and the first second shading sheet 160a as a whole are removed from the assembly fixture 200 shown in Figure 11(a).

[0096] Step 4, such as Figures 15 to 17As shown, the second light shielding sheet 160b is moved along the second horizontal direction Y so that the second light shielding sheet 160b is placed on the first supporting plane of the assembly fixture 200 shown in FIG. 11(b). The whole formed by the bracket 150 and the first second shading sheet 160a assembled in step 3 is moved along the second horizontal direction Y, so that the bracket 150 is set on the second bearing plane of the assembly fixture 200 shown in Figure 11(b), and the second second shading sheet 160b is inserted into the bracket 150. At this time, the first second shading sheet 160a is located between the second second shading sheet 160b and the second stage 220; move the pressing block 240 to above the second stage 220 and align the second connecting portion 241 with the first connecting portion 231, and connect the first connecting portion 231 with the second connecting portion 241. Since T=d3, the pressing block 240 is pressed against the first shading sheet 110, and the pressing block 240 applies pressure to the first shading sheet 110; and a vertical downward external force is applied to the second second shading sheet 160b through the first force-applying structure. Here, since d2≤k1 and d2≤k2, the first second light shielding sheet 160 a and the second second light shielding sheet 160 b can be simultaneously accommodated between the first stage 210 and the second stage 220 .

[0097] When the number of the second light shielding sheets 160 is greater than 2, and so on, this embodiment is not listed here one by one.

[0098] In general, one of the first bearing plane and the second bearing plane is used for overlapping the first shading sheet 110 of the bracket 150, and the other is used for overlapping the second shading sheet 160, and the distance D between the second bearing plane and the first bearing plane is equal to the sum of the thickness of the shading sheet corresponding to the first bearing plane and the preset distance, and the height d2 of the second carrier 220 along the vertical direction Z is less than or equal to the vertical distance between the first shading sheet 110 and any second shading sheet 160. Among them, the preset distance is equal to the vertical distance between the shading sheet corresponding to the first bearing plane and the shading sheet corresponding to the second bearing plane. In other words, the preset distance is equal to the vertical distance between the first shading sheet 110 and a second shading sheet 160 to be assembled corresponding to the assembly jig 200.

[0099] Based on the above description, it can be known that when the assembly jig 200 of this embodiment is used to assemble the bracket 150 and any second light shielding sheet 160, by placing one of the first light shielding sheet 110 of the bracket 150 and a second light shielding sheet 160 to be assembled on the first bearing plane and the other on the second bearing plane, and assembling and connecting the second light shielding sheet 160 with the bracket 150, the first bearing plane and the second bearing plane can play a positioning role to ensure the relative position accuracy of the first light shielding sheet 110 of the bracket 150 and the second light shielding sheet 160. In this way, when each second light shielding sheet 160 is assembled and connected to the bracket 150 through the assembly jig 200 to obtain the light shielding assembly 100, the relative position accuracy between the first light shielding sheet 110 and any second light shielding sheet 160 can be guaranteed. Based on this, it can be understood that when the shading component 100 assembled by the assembly jig 200 is applied to a laser radar, the influence of the low relative position accuracy between the first shading plate 110 and any second shading plate 160 on the shading effect of the shading component 100 can be reduced or even eliminated, so as to reduce the possibility of stray light entering the receiving device, thereby significantly improving the detection accuracy of the laser radar.

[0100] Moreover, since the assembly fixture 200 of the present embodiment is provided with a first force-applying structure and a second force-applying structure, after the second shading sheet 160 is assembled and connected to the bracket 150, a vertical downward external force can be applied to the first shading sheet 110 and the second shading sheet 160, so that the first shading sheet 110 and the second shading sheet 160 are tightly fitted with the corresponding bearing planes, further ensuring that the first bearing plane and the second bearing plane play a positioning role, which is conducive to ensuring the relative position accuracy of the first shading sheet 110 and the second shading sheet 160, thereby ensuring that the shading assembly 100 has a higher installation accuracy.

[0101] Exemplarily, the first bearing plane and the second bearing plane can be ground by a high-precision grinder, and the first bearing plane and the second bearing plane have a high flatness to ensure the relative position accuracy of the second shading film 160 and the first shading film 110 positioned by the first bearing plane and the second bearing plane.

[0102] like Figures 2 to 4As shown, when the bracket 150 is an integrated structure, the bracket 150 can be manufactured by an integrated molding process before the assembly jig 200 is used to assemble the bracket 150 and the second light shielding sheet 160. When the first light shielding sheet 110 is connected to the connecting plate 140 by an assembly method (such as snap-on, screw-on or plug-in), the assembly jig 200 can also be used to assemble the bracket 150. Specifically, the specific process of using the assembly jig 200 to assemble the bracket 150 may include the following steps: i) placing the first shading film 110 on the first bearing plane of the first carrier 210; applying a vertical downward external force to the first shading film 110 through a first force-applying structure, so that the first shading film 110 is fixedly attached to the first bearing plane; ii) moving a connecting plate 140 to the vicinity of one end of the first shading film 110, and assembling and connecting the connecting plate 140 to the first shading film 110; iii) moving another connecting plate 140 to the vicinity of the other end of the first shading film 110, and assembling and connecting the connecting plate 140 to the first shading film 110. Of course, the first shading film 110 can also be placed on the second carrier 220 during the process of assembling the bracket 150 using the assembly jig 200. Then the above step i) can be replaced by iv) placing the first shading film 110 on the second bearing plane of the second carrier 220; applying a vertical downward external force to the first shading film 110 through the second force-applying structure, so that the first shading film 110 is fixedly attached to the second bearing plane.

[0103] It can be seen that the assembly jig 200 of this embodiment can not only be used to assist in the assembly of the second shading sheet 160 and the bracket 150 , but can also be used to assist in the reliable assembly of the bracket 150 . The assembly jig 200 has many application scenarios.

[0104] It should be noted that in the embodiment where the second light shielding sheet 160 and the bracket 150 are assembled by plug-in connection, when the assembly fixture 200 is used to assemble the light shielding assembly 100, the placement order of the second light shielding sheet 160 and the bracket 150 is related to the placement position and posture of the bracket 150 and the insertion direction of the second light shielding sheet 160 into the bracket 150, and this embodiment does not impose any specific restrictions on this. Figures 2 to 5 Take the example shown below, please combine Figures 12 to 17 During assembly, the second shading sheet 160 can be firstly placed on the first bearing plane, and then the bracket 150 can be moved from the front side to the rear side of the assembly jig 200 along the second horizontal direction Y, so that the bracket 150 is placed on the second bearing plane and plugged into and matched with the second shading sheet 160 that has been placed on the first bearing plane.

[0105] Of course, in the embodiment where the number of the second shading sheets 160 is greater than or equal to 2, the assembly order of the second shading sheets 160 and the bracket 150 is also non-restrictive.

[0106] It can be understood that the above-mentioned first force applying structure includes but is not limited to the following possible implementations.

[0107] In one example, see Figure 7 and Fig. 9 The first force-applying structure includes an air suction pipe 260 and an air extraction device (not shown in the figure). A suction channel 211 is formed inside the first carrier 210. The inlet end of the suction channel 211 is exposed on the first bearing plane, and the outlet end is connected to the air extraction device through the air suction pipe 260. The air extraction device can drive air to flow from the inlet end to the outlet end to form a negative pressure in the suction channel 211. During the actual assembly process of the assembly jig 200, the air extraction device can be used to extract air, so that the light shielding sheet on the first bearing plane is subjected to negative pressure to be closely attached to the first bearing plane.

[0108] In another example, when the first shading sheet 110 and the second shading sheet 160 are steel sheets, the first force-applying structure may be an electromagnet device, which, when energized, generates a magnetic attraction between the shading sheet or sheets placed on the first supporting plane, so that the shading sheet is tightly attached to the first supporting plane under the action of the magnetic attraction.

[0109] The second force-applying structure may also refer to the first force-applying structure, that is, the second force-applying structure may also include an air suction pipe and an air extraction device, and the air extraction device is used to extract air to apply negative pressure to the shading sheet corresponding to the second bearing plane.

[0110] In the following description, an example is given in which the first force-applying structure includes the air suction pipe 260 and the air extraction device, and the second force-applying structure includes the pressing block 240, which should not be regarded as a limitation to the present disclosure.

[0111] It is easy to understand that the assembly jig 200 of this embodiment can be placed on a desktop for use, and the first carrier 210 and the second carrier 220 are both adaptively fixedly connected to the desktop. Alternatively, the assembly jig 200 can also be hung on a wall for use, and the first carrier 210, the second carrier 220 and the first connecting portion 231 are all adaptively arranged on the wall.

[0112] In some embodiments, Figure 6 and Figure 7As shown, the assembly jig 200 also includes a workbench 250, and the first carrier 210, the second carrier 220 and the first connecting portion 231 are all fixedly mounted on the workbench 250. Among them, the workbench 250 can be a block structure or a plate structure. With this arrangement, the workbench 250 provides stable support for the first carrier 210, the second carrier 220 and the first connecting portion 231. On the basis of this embodiment, the assembly jig 200 may further include a workbench (not shown in the figure), and the workbench 250 is stacked above the workbench, and the workbench 250 is fixedly connected to the workbench. In this way, the workbench supports the workbench 250. As in the assembly jig 200 disclosed herein, the workbench 250 and the workbench can be screwed together by screws 300, for example, and can also be connected by means of snap-on, plug-in, welding, etc. Please refer to Figure 6 and Figure 7 The tooling table 250 may specifically include a substrate 251 and a vertical plate 252 erected on the substrate 251, the first carrier 210 is fixed on the substrate 251, and the first carrier 210, the second carrier 220 and the first connecting portion 231 are arranged on the same side of the vertical plate 252. In this way, the substrate 251 supports the first carrier 210. When the assembly jig 200 of this embodiment is used to assemble the bracket 150 and the second light shielding sheet 160, the bracket 150 and the second light shielding sheet 160 are moved along the second horizontal direction Y from the vertical plate 252 toward the front side of the first carrier 210 to the rear side.

[0113] The first carrier 210 can also be fixedly connected to the vertical plate 252. As in the assembly jig 200 disclosed herein, the first carrier 210 can be fixedly connected to the vertical plate 252 by using techniques such as clamping, welding, and screwing. In some embodiments, the first carrier 210 and the vertical plate 252 can also be formed into an integral part by an integral molding process. In this way, it is not only beneficial to save the assembly process between the first carrier 210 and the vertical plate 252, but also to improve the structural reliability of the first carrier 210 without increasing the cost.

[0114] The second stage 220 is not limited to Figure 7 The second platform 220 is fixed on the vertical plate 252 as shown, and can also be configured to be fixedly connected to the base plate 251. For example, both ends of the second platform 220 are connected to the base plate 251 through support rods. Figure 7 As shown, it is fixed on the vertical plate 252, and can also be set on the base plate 251, or set on the flange of the first carrier 210, wherein the flange is specifically formed on the side surface of the first carrier 210 along the first horizontal direction X.

[0115] exist Figure 7 and Figure 8In the specific example shown, the assembly fixture 200 further includes a mounting seat 230, which can be fixed on the vertical plate 252 or on the base plate 251, and the first connecting portion 231 is disposed on the mounting seat 230. With this design, the mounting seat 230 provides a reliable installation for the first connecting portion 231.

[0116] In a specific embodiment, the method for realizing the detachable connection between the first connection part 231 and the second connection part 241 can be any one or more of the methods such as screw connection, snap connection, magnetic connection, etc. Taking the magnetic connection as an example, one of the first connection part 231 and the second connection part 241 is a magnet, and the other is configured to be magnetically attracted to the magnet, so that the pressing block 240 is magnetically connected to the mounting seat 230 through the magnetic force between the first connection part 231 and the second connection part 241. Compared with the screw connection and other methods, in this embodiment, the pressing block 240 can be connected to the mounting seat 230 or the pressing block 240 can be disassembled and separated from the mounting seat 230 without the help of installation tools, and the disassembly and assembly are simple and convenient.

[0117] Exemplarily, one of the first connection part 231 and the second connection part 241 is a magnet, and the other is made of a magnetic metal (e.g., iron, cobalt, nickel). The magnet is not limited to a permanent magnet, but may also be an electromagnet. For example again, the first connection part 231 and the second connection part 241 are both magnetic parts, and the first connection part 231 and the second connection part 241 are specifically permanent magnets. Compared with an electromagnet, a permanent magnet has the advantages of strong and constant magnetism, and does not require a power supply, which is conducive to cost saving.

[0118] Fig.18 for Figure 7 FIG. 11( a ), FIG. 11( b ), and FIG. 11( c ) are exploded views of the assembly jig 200 shown in FIG. Fig.13 , Fig.16 and Fig.18 , the mounting seat 230 is provided with a first groove 232, the first connecting portion 231 is embedded in the first groove 232, and the first connecting portion 231 does not protrude from the first groove 232. In this way, the first connecting portion 231 can be stably fixed on the mounting seat 230. In some embodiments, the pressing block 240 is provided with a second groove, the second connecting portion 241 is embedded in the second groove, and the second connecting portion 241 does not protrude from the second groove. In this way, the second connecting portion 241 can be stably fixed on the mounting seat 230. In the embodiment in which the mounting seat 230 is provided with the first groove 232 and the pressing block 240 is provided with the second groove, when the first connecting portion 231 is connected to the second connecting portion 241, the pressing block 240 and the mounting seat 230 are abutted.

[0119] like Fig.18As shown, two first connection parts 231 and two second connection parts 241 are provided, and correspondingly, two mounting seats 230 are also provided. By increasing the number of groups of the first connection parts 231 and the second connection parts 241, it is beneficial to improve the connection reliability between the two. Of course, the first connection parts 231 and the second connection parts 241 are not limited to the above number, and can be specifically designed according to needs and actual working conditions.

[0120] In the embodiment where the tooling table 250 is provided with a vertical plate 252, when the first connection portion 231 is connected to the second connection portion 241, the pressing block 240 can be in contact with a side of the vertical plate 252 facing the first carrier 210. In this way, in the process of pressing the pressing block 240 against the first light shielding sheet 110 carried by the second carrying plane, the side of the vertical plate 252 facing the first carrier 210 can play a guiding role, so as to guide the pressing block 240 to move downward along the vertical direction Z.

[0121] For other options, see Fig. 9 and Fig.14 When the first connection portion 231 is connected to the second connection portion 241, the pressing block 240 is opposite to the vertical plate 252, and an escape gap 280 is formed between the pressing block 240 and the vertical plate 252. The size of the escape gap 280 in the second horizontal direction Y is ε, ε ≥ W1. It can be understood that the assembly jig 200 of this embodiment can be used to assemble the shading component 100 with the side shading sheet 120.

[0122] Here, the shading component 100 is as follows Figures 2 to 5 As shown in the figure, the first main shading sheet in the stacked arrangement is the first shading sheet 110. At this time, the bracket 150 includes two connecting plates 140, the first shading sheet 110 and the side shading sheet 120. When the bracket 150 and the second shading sheet 160 are assembled, as shown in FIG. Fig.14 and Fig.17 As shown, during the assembly process, the bracket 150 can be mounted on the second platform 220 and the side shading sheet 120 is aligned with the side of the vertical plate 252 facing the first platform 210. When the first connecting portion 231 is then connected to the second connecting portion 241, because ε≥W1, the side shading sheet 120 is located in the avoidance gap 280.

[0123] It can be seen that when the assembling fixture 200 is used to assemble the shading assembly 100 having the side shading sheet 120 , the avoidance gap 280 can avoid the side shading sheet 120 , which is helpful to avoid interference between the pressing block 240 and the side shading sheet 120 .

[0124] Furthermore, ε may also satisfy: ε≥W1+W2. It can be understood that the assembly fixture 200 of this embodiment can be used to assemble the shading component 100 having the side shading sheet 120 and the reinforcing rib 130. Figures 2 to 5As shown in the figure, when the bracket 150 is assembled with the second light shielding sheet 160, when the first connecting portion 231 is connected with the second connecting portion 241 during the assembly process, because ε≥W1+W2, the side light shielding sheet 120 and the reinforcing rib 130 are located in the avoidance gap 280. It can be seen that when the light shielding assembly 100 having the side light shielding sheet 120 and the reinforcing rib 130 is assembled using the assembly jig 200, the avoidance gap 280 can avoid the side light shielding sheet 120 and the reinforcing rib 130, which is conducive to avoiding the interference between the pressing block 240 and the side light shielding sheet 120 and the reinforcing rib 130, and ensuring that the pressing block 240 can press the first light shielding sheet 110 carried by the second bearing plane.

[0125] Fig.19 for Figure 6 The three-dimensional structure of the assembly fixture 200 is shown in FIG. Figure 2 , Fig. 20 for Fig.19 The schematic side cross-sectional view of the assembly fixture 200 is shown. Fig.21 for Figure 7 The three-dimensional structure of the assembly fixture 200 is shown in FIG. Figure 2 . See Figures 19 to 21 In the embodiment where the tooling table 250 is provided with a vertical plate 252, the outlet end of the suction channel 211 is also exposed on the side of the first platform 210 facing the vertical plate 252, and a channel 253 is provided on the vertical plate 252, and the channel 253 is connected to the outlet end, and one end of the suction pipe 260 extends from the side of the vertical plate 252 facing away from the first platform 210 into the channel 253. In this way, the suction pipe 260 extends on the side of the vertical plate 252 facing away from the first platform 210, which is conducive to avoiding interference between the suction pipe 260 and components such as the first platform 210 and the second platform 220.

[0126] There are two suction channels 211 formed inside the first carrier 210, and two suction pipes 260 are provided accordingly, and the two suction pipes 260 are connected to the two suction channels 211 in a one-to-one correspondence. By increasing the number of suction channels 211, it is helpful to increase the negative pressure effect on the first light shielding sheet 110 carried by the first bearing plane, thereby ensuring the stability of the first light shielding sheet 110 on the first bearing plane.

[0127] Of course, the number of the suction channel 211 and the suction pipe 260 is not limited to the above number, and can be specifically designed according to the needs and actual working conditions. When there are multiple suction pipes 260, each suction pipe 260 can be connected to a corresponding suction device, or multiple suction pipes 260 can be connected to one suction device together, so that the number of suction devices is small, which is conducive to cost saving.

[0128] In addition, in some feasible embodiments, the assembly jig 200 may further include a driving device, which can drive the first carrier 210 to reciprocate along the vertical direction Z. In this way, the first carrier 210 is controlled by the driving device so that the distance D between the first bearing plane and the second bearing plane can be changed. In this way, by adjusting the first carrier 210, the assembly process of each second light shielding sheet 160 and the bracket 150 can be completed on the assembly jig 200.

[0129] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. An assembly jig for assembling a light shielding component of a laser radar, characterized in that: The shading assembly comprises a bracket and at least one second shading sheet, the bracket comprises a first shading sheet and two connecting plates arranged opposite to each other along a first horizontal direction, the two ends of the first shading sheet are respectively fixedly connected to the two connecting plates, each of the connecting plates is provided with at least one connecting position; each of the second shading sheets corresponds to a connecting position on the connecting plate, the two ends of the second shading sheet are respectively assembled and connected to the corresponding connecting positions on the two connecting plates, the first shading sheet and all the second shading sheets are parallel to each other and arranged at intervals along the vertical direction; the assembly jig comprises: A first carrier, wherein the top surface of the first carrier is a first carrying plane; The second carrier is arranged above the first carrier and opposite to the first carrier; the side of the second carrier facing away from the first carrier is a second bearing plane, one of the first bearing plane and the second bearing plane is used for placing the first shading sheet, and the other is used for placing one of the second shading sheets; along the vertical direction, the distance between the second bearing plane and the first bearing plane is equal to the sum of the thickness of the shading sheet corresponding to the first bearing plane and a preset distance, and the preset distance is equal to the distance between the first shading sheet and the second shading sheet in the vertical direction; the height of the second carrier along the vertical direction is less than or equal to the vertical distance between the first shading sheet and any of the second shading sheets; A first force-applying structure configured to apply a vertical downward external force to the light-shielding sheet correspondingly carried by the first carrying plane; and The second force-applying structure is configured to apply a vertical downward external force to the light-shielding sheet correspondingly carried by the second carrying plane.

2. The assembly jig according to claim 1, characterized in that: The first force-applying structure includes an air suction pipe and an air extraction device. A suction flow channel is formed inside the first carrier. The inlet end of the suction flow channel is exposed on the first carrying plane, and the outlet end is connected to the air extraction device through the air suction pipe. The air extraction device can drive air to flow from the inlet end to the outlet end, so that negative pressure is formed in the suction flow channel. The second force-applying structure includes a first connecting part and a pressure block, the pressure block is provided with a second connecting part, and the second connecting part is detachably connected to the first connecting part; when the second connecting part is connected to the first connecting part, the bottom surface of the pressure block is located above the second bearing plane and the distance between the two along the vertical direction is equal to the thickness of the shading film corresponding to the second bearing plane.

3. The assembly jig according to claim 2, characterized in that: It also includes a tooling platform, and the first carrier platform, the second carrier platform and the first connecting portion are all fixedly mounted on the tooling platform.

4. The assembly jig according to claim 3, characterized in that: The tooling table includes a base plate and a vertical plate erected on the base plate, the first carrier is fixed on the base plate, and the first carrier, the second carrier and the first connecting portion are arranged on the same side of the vertical plate.

5. The assembly jig according to claim 4, characterized in that: The first platform and the second platform are both fixedly connected to the vertical plate, the outlet end of the suction channel is exposed on a side of the first platform facing the vertical plate, a channel is provided on the vertical plate, the channel is connected to the outlet end, and one end of the suction pipe extends into the channel from a side of the vertical plate facing away from the first platform.

6. The assembly jig according to claim 4, characterized in that: The first shading sheet and all the second shading sheets are main shading sheets, and the main shading sheet has a front and a back side facing each other in the vertical direction, and the front side is used to face the echo light in a non-preset echo direction. The shading assembly also includes a side shading sheet, and the side shading sheet is located on the front side of all the main shading sheets; along the vertical direction, from the front side to the back side of the main shading sheet, the first main shading sheet stacked and arranged is connected with the side shading sheet in a turning direction and formed as one piece, and the size of the orthographic projection of the side shading sheet on the front side of the first shading sheet in the second horizontal direction is W1; wherein, the second horizontal direction is perpendicular to the first horizontal direction; When the second connection portion is connected to the first connection portion, the pressing block is opposite to the vertical plate and an escape gap is formed between the pressing block and the vertical plate. The size of the escape gap in the second horizontal direction is ε, and ε and W1 satisfy: ε≥W1.

7. The assembly jig according to claim 3, characterized in that: It also includes a workbench, the tooling table is stacked above the workbench, and the tooling table is fixedly connected to the workbench.

8. The assembly jig according to claim 2, characterized in that: One of the first connection part and the second connection part is a magnet, and the other is configured to be magnetically attracted to the magnet.

9. The assembly jig according to claim 2, characterized in that: It also includes a mounting seat, the mounting seat is provided with a first groove, and the first connecting portion is embedded in the first groove; And / or, a second groove is provided on the pressing block, and the second connecting portion is embedded in the second groove.

10. The assembly jig according to claim 1, characterized in that: Of the first platform and the second platform, at least the length of the second platform along the first horizontal direction is smaller than the minimum distance between the two connecting plates along the first horizontal direction.

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