An assembly fixture for laser radar lens barrel

Abstract

The utility model relates to an assembly jig for a laser radar lens barrel, comprising: a base; a pressing assembly, comprising a screw mechanism vertically arranged on the base and a pressing piece connected to the screw nut of the screw mechanism; a pressing portion is provided at the bottom of the pressing piece; a positioning support assembly, comprising a positioning support block with a positioning groove and a positioning hole on the top, a guiding mechanism arranged on the base and guiding the positioning support block to be lifted and lowered, and at least one elastic element arranged between the positioning support block and the base; a limiting assembly, comprising at least one limiting piece arranged below the pressing piece, and the limiting piece is installed on the base. The utility model solves the problem of the lens barrel positioning column being broken due to excessive jig pressure and the problem of inconsistent mirror deflection due to inconsistent jig pressure.

Description

Technical Field

[0001] The utility model relates to the technical field of laser radar, in particular to an assembly fixture for a laser radar lens barrel. Background Art

[0002] LiDAR (Light Detection and Ranging) is the abbreviation of Laser Detection and Ranging System, also known as Laser Radar or LADAR (Laser Detection and Ranging). It is an active remote sensing device that uses laser as the light source and photoelectric detection technology.

[0003] LiDAR is an advanced detection method that combines laser technology with modern photoelectric detection technology. It consists of a transmitting system, a receiving system, and information processing. It can be used for industrial intelligent robot navigation and obstacle avoidance, unmanned vehicle navigation, security industry monitoring, and so on.

[0004] In practical applications, combined with Figure 1 and Figure 2 The radar internal structure assembly 500 is assembled into a component by a lens barrel 503, a reflector 502 and a motor 501, wherein the motor 501 is used to drive the reflector 502 to rotate, and the lens barrel 503 includes a first barrel and a second barrel that are bent, and the first barrel and the second barrel are both provided with positioning posts 5031. During assembly, the contact surfaces of various structural parts will be bonded with glue, so a jig is needed to assist in pressing down to make the lens barrel 503 and the assembly surface of the reflector 502 fit together.

[0005] In the prior art, the downward pressure of the jig is manually adjusted by the operator when assembling the lens barrel 503. However, the operator's strength is difficult to control and it is easy to cause excessive downward pressure, resulting in the following consequences: 1. The positioning column 5031 of the lens barrel 503 breaks, causing the lens barrel 503 and the reflector 502 to be scrapped; 2. The inconsistent pressure each time causes the deviation of the assembly mirror on the radar 500 to be inconsistent. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model discloses an assembly fixture for a laser radar lens barrel.

[0007] The technical solution adopted by the utility model is as follows:

[0008] An assembly jig for a laser radar lens barrel, comprising:

[0009] Base;

[0010] A pressing assembly comprises a screw mechanism vertically arranged on the base and a pressing piece connected to a screw nut of the screw mechanism; a pressing portion is arranged at the bottom of the pressing piece;

[0011] A positioning support assembly, comprising a positioning support block with a positioning groove and a positioning hole on the top, a guide mechanism provided on the base and guiding the positioning support block to be lifted and lowered, and at least one elastic element provided between the positioning support block and the base;

[0012] The limiting component comprises at least one limiting member arranged below the pressing member, and the limiting member is installed on the base.

[0013] In one embodiment of the utility model, the pressing assembly further comprises at least one set of slidably matched guide rails and sliders; the guide rails are vertically fixed to the lead screw mechanism; and the sliders are fixed to the pressing member.

[0014] In one embodiment of the utility model, the screw mechanism includes a vertical plate vertically arranged on the base, a first mounting plate and a second mounting plate arranged in parallel up and down, a vertically arranged screw and a screw nut cooperating with the screw; the first mounting plate and the second mounting plate are horizontally fixed on the same side of the vertical plate; the bottom end of the screw is rotatably matched with the second mounting plate, and the top end of the screw extends upward and passes through the first mounting plate.

[0015] In an embodiment of the utility model, a radial gap is provided between the lead screw and the first mounting plate; the lead screw mechanism further comprises a clamp provided on the first mounting plate, and the clamp is sleeved on the lead screw.

[0016] In one embodiment of the utility model, the screw mechanism further includes a turntable coaxially arranged on the top of the screw, and a handle arranged on the turntable.

[0017] In one embodiment of the utility model, a step portion is formed on the top of the positioning support block, the positioning groove is horizontally provided on the upper plane of the step portion, and the positioning hole is vertically provided on the lower plane of the step portion.

[0018] In an embodiment of the present invention, the cross-sectional shape of the positioning groove is arc-shaped; the axes of the positioning groove and the positioning hole intersect perpendicularly.

[0019] In one embodiment of the utility model, the guiding mechanism includes at least one linear bearing mounted on the base and a first guide column slidably matched with the linear bearing; the first guide column is vertically fixed to the bottom of the positioning support block.

[0020] In one embodiment of the present invention, the guiding mechanism comprises at least one second guiding column vertically mounted on the base; and the positioning support block is provided with a guiding hole adapted to the second guiding column.

[0021] In an embodiment of the present invention, the limiting member is configured as a bolt threadedly connected to the base to adjust the pressing height of the pressing member.

[0022] The above technical solution of the utility model has the following advantages compared with the prior art:

[0023] The assembly jig for the laser radar lens barrel described in the utility model utilizes a pressing component to solve the problem of the lens barrel positioning column being broken due to excessive pressure of the jig.

[0024] The assembly jig for the laser radar lens barrel described in the utility model utilizes the cooperation between the pressing component and the positioning mechanism to solve the problem of inconsistent lens deviation caused by inconsistent jig pressure.

[0025] The assembly jig for the laser radar lens barrel described in the utility model utilizes the buffering of elastic elements to avoid the situation where the lens barrel positioning column is broken due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments of the utility model in combination with the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the structure of the internal components of an existing radar.

[0028] Figure 2 It is a structural schematic diagram of an existing lens barrel.

[0029] Figure 3 It is a structural schematic diagram of an assembly fixture for a laser radar lens barrel in the utility model.

[0030] Figure 4 It is a front view of an assembly jig (excluding a positioning support component and a limit component) used for a laser radar lens barrel in the utility model.

[0031] Figure 5 yes Figure 4 Cross-section view at AA in the middle.

[0032] Figure 6 It is a structural schematic diagram of the positioning support component and the limiting component in the utility model.

[0033] Figure 7 It is a structural schematic diagram of the positioning support block in the utility model.

[0034] Description of the Figures in the Specification:

[0035] 101, turntable; 102, lead screw; 103, lead screw nut; 104, handle; 105, clamp;

[0036] 201, guide rail; 202, slider; 203, pressing member; 204, pressing portion;

[0037] 301, vertical plate; 302, first mounting plate; 303, second mounting plate; 304, position limiting member; 305, base;

[0038] 401, positioning support block; 4011, positioning groove; 4012, positioning hole; 402, first guide column; 403, linear bearing; 404, elastic element; 405, second guide column;

[0039] 500. Radar internal components; 501. Motor; 502. Reflector; 503. Mirror tube; 5031. Positioning column. DETAILED DESCRIPTION

[0040] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0041] The above and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only the directions of the reference drawings. Therefore, the directional terms used are used to illustrate and not to limit the present invention. In addition, in all embodiments, the same reference numerals represent the same elements.

[0042] In practical applications, combined with Figure 1 and Figure 2 The radar internal component 500 is assembled into a component by a lens barrel 503, a reflector 502 and a motor 501. The motor 501 is used to drive the reflector 502 to rotate. The lens barrel 503 includes a first barrel body and a second barrel body that are bent, and a positioning column 5031 is provided on the first barrel body and the second barrel body. Specifically, Figure 7 As shown, the angle formed between the first cylinder and the second cylinder is approximately 90°. When assembling the radar internal assembly 500, glue is used to bond the contact surfaces of various structural parts. Therefore, a jig is required to assist in pressing down to make the lens barrel 503 and the assembly surface of the reflector 502 fit together.

[0043] In the prior art, the downward pressure of the jig is manually controlled by the operator when assembling the lens barrel 503. However, the operator's strength is difficult to control, which can easily cause excessive downward pressure, resulting in the following consequences: 1. The positioning column 5031 of the lens barrel 503 is broken, causing the lens barrel 503 and the reflector 502 to be scrapped; 2. The inconsistent pressure each time causes the mirror deflection of the radar internal component 500 to be inconsistent.

[0044] In order to solve the above problems, this embodiment provides an assembly fixture for a laser radar lens barrel.

[0045] Combination Figures 3 to 5 , an assembly fixture for a laser radar lens barrel, comprising a base 305, a pressing component, a positioning support component and a limiting component, such as Figure 1 As shown, the pressing assembly is located above the positioning support assembly, and the positioning support assembly is located above the limiting assembly.

[0046] The pressing assembly includes a screw mechanism vertically arranged on the base 305 and a pressing member 203 connected to the screw nut 103 of the screw mechanism. A pressing portion 204 is provided at the bottom of the pressing member 203, and the pressing portion 204 is used to press the motor 501.

[0047] Specifically, the screw mechanism includes a vertical plate 301 vertically arranged on the base 305, a first mounting plate 302 and a second mounting plate 303 arranged in parallel up and down, a vertically arranged screw 102 and a screw nut 103 matched with the screw 102. Among them, the first mounting plate 302 and the second mounting plate 303 are horizontally fixed on the same side of the vertical plate 301. The first mounting plate 302 and the second mounting plate 303 are installed on the side of the vertical plate 301 close to the lower pressure piece 203. In order to improve the stability of the screw mechanism. The second mounting plate 303 is fixed on the base 305. The bottom end of the screw 102 is rotatably matched with the second mounting plate 303. Generally, a bearing that bears axial force can be set at the bottom end of the screw 102 to reduce the rotational wear of the screw 102 and the second mounting plate 303, such as a thrust bearing. The top of the screw 102 extends upward and passes through the first mounting plate 302.

[0048] Furthermore, the screw mechanism also includes a turntable 101 coaxially arranged on the top of the screw 102, and a handle 104 arranged on the turntable 101. The turntable 101 is rotated by rotating the handle 104, so that the screw 102 drives the pressing member 203 to rise and fall through the screw nut 103.

[0049] In some possible embodiments, the screw mechanism also includes a servo motor connected to the end of the screw 102, thereby replacing the turntable 101 and the handle 104, and the output end of the servo motor can be connected to the screw 102 by direct connection or through a coupling.

[0050] In this embodiment, the pressing member 203 can be a slide plate, the bottom of the pressing member 203 extends along its thickness direction to form a pressing portion 204, and the pressing portion 204 extends along its height direction to form a multi-stage positioning portion, at least one stage of the positioning portion positions and presses the motor 501. It can be understood that the shape of the positioning portion is designed according to the shape of the motor 501.

[0051] Furthermore, to ensure that the pressing member 203 is pressed down smoothly, the pressing assembly further includes at least one set of slidingly matched guide rails 201 and sliders 202. The guide rails 201 are vertically fixed to the lead screw mechanism. The slider 202 is fixed to the pressing member 203. In this embodiment, the pressing assembly further includes two sets of slidingly matched guide rails 201 and sliders 202, and the two sets of guide rails 201 and sliders 202 are respectively arranged on both sides of the lead screw 102, wherein the guide rails 201 are fixed to the vertical plate 301.

[0052] Furthermore, to facilitate the installation of the lead screw 102, a radial gap is provided between the lead screw 102 and the first mounting plate 302; the lead screw mechanism also includes a clamp 105 provided on the first mounting plate 302, and the clamp 105 is sleeved on the lead screw 102. Specifically, the clamp 105 includes a clamping block for clamping the lead screw 102, a pin that passes through the clamping block horizontally and avoids the lead screw 102, and a knob connected to the end of the pin. Through the structural form of the clamp 105 and appropriate force, the lead screw 102 is locked in the clamping block by turning the knob, so that the lead screw 102 and the clamp 105 can rotate in coordination. The clamp 105 can limit the rotation of the installed lead screw 102 to ensure that the rotating axis of the lead screw 102 is vertical. Combined with Figure 6 and Figure 7 The positioning support assembly includes a positioning support block 401 with a positioning groove 4011 and a positioning hole 4012 on the top, a guide mechanism provided on the base 305 and guiding the positioning support block 401 to rise and fall, and at least one elastic element 404 provided between the positioning support block 401 and the base 305. The positioning groove 4011 is provided horizontally for positioning the horizontal barrel of the lens barrel 503, and the positioning hole 4012 is provided vertically for positioning the vertical barrel of the lens barrel 503.

[0053] In the present embodiment, considering the convenience of processing of the positioning groove 4011 and the positioning hole 4012, and the convenience of installation and positioning, the positioning support block 401 forms a step portion near the top of the pressing assembly. The upper plane of the step portion is horizontally provided with the positioning groove 4011. The lower plane of the step portion is vertically provided with the positioning hole 4012. It can be understood that, in order to match the shape of the barrel of the lens barrel 503, the cross-sectional shape of the positioning groove 4011 is designed to be an arc structure that is adapted to the horizontal barrel profile of the lens barrel 503. The cross-sectional shape of the positioning hole 4012 is designed to be a circular structure that is adapted to the vertical barrel profile of the lens barrel 503. And the axes of the positioning groove 4011 and the positioning hole 4012 are perpendicular to each other. And the upper plane of the step portion is horizontally provided with the positioning groove 4011, and the lower plane of the step portion is vertically provided with the positioning hole 4012 in order to expose the positioning post 5031 on the lens barrel 503, so as to facilitate the subsequent reflection mirror 502 to be positioned by the positioning post 5031, to ensure accurate positioning.

[0054] In this embodiment, two springs with an outer diameter of 12.5 mm, an inner diameter of 8.5 mm, and a length of 30 mm are installed between the positioning support block 401 and the base 305 as elastic elements 404, and the spring constant is 2.05 N / mm. The compressible space of the spring in the fixture is 10 mm, so a single spring can provide a force of 20.5 N, and two springs can provide a total force of 41 N. From the above, it can be seen that the force range that the two springs can provide is: 0-41 N. The force required for the lens barrel 503, the reflector 502, and the motor 501 components to fit the pressing requirements is about 20 N, so the force of 0-41 N can meet the assembly requirements of the components.

[0055] In this embodiment, in order to enable the positioning support block 401 to move up and down and to be accurately positioned, the guide mechanism includes at least one linear bearing 403 mounted on the base 305 and a first guide column 402 that slides with the linear bearing 403. The first guide column 402 is vertically fixed to the bottom of the positioning support block 401. In this embodiment, two high-precision linear bearings 403 are designed at the sliding fit of the first guide column 402 of the positioning support block 401, and correspondingly, two first guide columns 402 are also designed.

[0056] In this embodiment, in order to enable the positioning support block 401 to move up and down, the guide mechanism includes at least one second guide column 405 vertically mounted on the base 305; a guide hole adapted to the second guide column 405 is provided on the positioning support block 401. In this embodiment, two second guide columns 405 are respectively arranged on the outer sides of the two linear bearings 403 perpendicular to the base 305. Two guide holes adapted to the second guide columns 405 are correspondingly provided on both sides of the positioning support block 401.

[0057] Furthermore, the limiting assembly includes at least one limiting member 304 disposed below the pressing member 203, and the limiting member 304 is installed on the base 305 so that the force of each assembly is consistent. In addition, it is possible to prevent the positioning column 5031 on the lens barrel 503 from breaking due to excessive pressure. Specifically, two M8×90 bolts or screws are provided on the base 305 as limiting members 304, and the pressing height of the pressing member 203 is limited by adjusting the height of the bolts or screws. Then, after the height is limited, the force provided by the elastic element 404 to the positioning support block 401 will remain consistent during repeated assembly. The installed limiting member 304 is used to limit the pressing stroke of the pressing member 203.

[0058] The working principle of this embodiment is as follows:

[0059] The operator places the radar internal component 500 on the positioning support block 401. The lens barrel 503 is positioned by the positioning groove 4011 and the positioning hole 4012 on the positioning support block 401, and the reflector 502 is positioned by the positioning column 5031 on the lens barrel 503.

[0060] The operator rotates the handle 104, and the handle 104 drives the lead screw 102 to rotate, and the lead screw 102 is pressed down through the lead screw nut 103. The slider 202 slides along the guide rail 201, thereby ensuring that the pressing member 203 presses down smoothly toward the positioning support block 401, and the pressing part 204 presses the motor 501. Moreover, the force is applied evenly during the pressing process, which can avoid the situation of instantaneous excessive force.

[0061] In the description of the embodiments of the present utility model, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0062] Obviously, the above embodiments are merely examples for the purpose of clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the scope of protection of the invention of the utility model.

Claims

1. An assembly jig for a laser radar lens barrel, characterized in that: include: Base (305); A pressing assembly comprises a screw mechanism vertically arranged on the base (305) and a pressing piece (203) connected to a screw nut (103) of the screw mechanism; a pressing portion (204) is provided at the bottom of the pressing piece (203); A positioning support assembly, comprising a positioning support block (401) with a positioning groove (4011) and a positioning hole (4012) on the top, a guide mechanism disposed on the base (305) and guiding the positioning support block (401) to rise and fall, and at least one elastic element (404) disposed between the positioning support block (401) and the base (305); The limiting component comprises at least one limiting member (304) disposed below the pressing member (203), wherein the limiting member (304) is mounted on the base (305).

2. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: The pressing assembly further comprises at least one set of slidingly matched guide rails (201) and sliders (202); the guide rails (201) are vertically fixed to the lead screw mechanism; and the sliders (202) are fixed to the pressing member (203).

3. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: The screw mechanism comprises a vertical plate (301) vertically arranged on the base (305), a first mounting plate (302) and a second mounting plate (303) arranged in parallel up and down, a vertically arranged screw (102) and a screw nut (103) matched with the screw (102); the first mounting plate (302) and the second mounting plate (303) are horizontally fixed on the same side of the vertical plate (301); the bottom end of the screw (102) is rotatably matched with the second mounting plate (303), and the top end of the screw (102) extends upward and passes through the first mounting plate (302).

4. The assembly jig for the laser radar lens barrel according to claim 3, characterized in that: A radial gap is provided between the lead screw (102) and the first mounting plate (302); the lead screw mechanism further comprises a clamp (105) provided on the first mounting plate (302), and the clamp (105) is sleeved on the lead screw (102).

5. The assembly jig for the laser radar lens barrel according to claim 4, characterized in that: The screw mechanism further comprises a turntable (101) coaxially arranged on the top of the screw (102), and a handle (104) arranged on the turntable (101).

6. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: A step portion is formed on the top of the positioning support block (401), the positioning groove (4011) is horizontally provided on the upper plane of the step portion, and a positioning hole (4012) is vertically provided on the lower plane of the step portion.

7. The assembly jig for the laser radar lens barrel according to claim 6, characterized in that: The cross-sectional shape of the positioning groove (4011) is arc-shaped; the axes of the positioning groove (4011) and the positioning hole (4012) intersect vertically.

8. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: The guiding mechanism comprises at least one linear bearing (403) mounted on the base (305) and a first guiding column (402) slidably matched with the linear bearing (403); the first guiding column (402) is vertically fixed to the bottom of the positioning support block (401).

9. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: The guiding mechanism comprises at least one second guiding column (405) vertically mounted on the base (305); and a guiding hole adapted to the second guiding column (405) is provided on the positioning support block (401).

10. The assembly jig for the laser radar lens barrel according to claim 1, characterized in that: The limiting member (304) is configured as a bolt threadedly connected to the base (305) to adjust the pressing height of the pressing member (203).

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