camera

Abstract

The utility model provides a kind of camera, photoelectric sensor is located lens rear side and is fixedly connected with front shell, the front end of floating type plug-in part is connected on the back plate surface of photoelectric sensor;Floating type plug-in part includes front sleeve, middle section sleeve and rear sleeve that are elastically plugged in order from front to back, three electrical terminals in three sleeves are also elastically plugged in order from front to back, and insulation is respectively arranged between sleeve and electrical terminal.The utility model sets three sleeves and electrical terminals that are elastically plugged in order from front to back, so that the threshold range of floating deviation that floating type plug-in part can bear is larger, ensure that the threshold is greater than the position deviation amount between camera electrical terminal and photoelectric sensor, avoid its influence on camera accuracy.

Description

Technical Field

[0001] This utility model relates to the field of optical instrument technology, specifically to a camera. Background Technology

[0002] Vehicle cameras are typically installed in locations such as the front grille and trunk lid of a car, providing drivers with real-time images of the vehicle's surroundings and enhancing driving safety. The photoelectric sensor and connector covering the power terminals of the vehicle camera are usually housed within a cavity formed by the front and rear housings. The power terminals are mounted on the rear panel of the photoelectric sensor. Since the photoelectric sensor is connected to the front housing and the connector to the rear housing, any misalignment in the installation position of the two housings, when fixed together by laser welding or other methods, can cause a shift in the position between the photoelectric sensor and the connector. This can lead to distortion of the photoelectric sensor's panel, resulting in inaccurate camera focusing, and in severe cases, damage to the photoelectric sensor itself.

[0003] The patent disclosed in the patent entitled "Intercalation-type Floating Connector Assembly" (CN117937169A) includes a mating connector, a floating connector, and a board-end connector, which enables the photoelectric sensor and the power terminal to be connected in a floating manner through the connector assembly, thus avoiding the influence of positional errors between the power terminal and the photoelectric sensor.

[0004] The connector assembly in the above solution consists of a mating sleeve 11, a plug-in sleeve 21, and a board-end sleeve 31 that are elastically connected to each other. A second electrical terminal 22 is fixedly connected inside the plug-in sleeve 21, and a third electrical terminal 32 is fixedly connected inside the board-end sleeve 31. However, the first end of the second electrical terminal 22 is fixedly connected to the third electrical terminal 32. Therefore, the floating deviation of the electrical terminals is achieved through the elastic connection between the end of the second electrical terminal 22 and the first electrical terminal 12. This renders the elastic connection design between the plug-in sleeve 21 and the board-end sleeve 31 ineffective. In other words, the plug-in design between the electrical terminals in the above patent does not match the elastic connection design between the sleeves, reducing the threshold range of floating deviation that the connector assembly can withstand. Utility Model Content

[0005] The purpose of this invention is to provide a camera that uses a floating connector to avoid the influence of positional errors between the power terminal and the photoelectric sensor.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a camera includes a front housing and a rear housing fixedly connected. The front housing is provided with a cylindrical cavity for accommodating a lens. The light incident mirror a of the lens mounted on the front housing is exposed at the outer cover surface of the front housing. A plate-shaped photoelectric sensor and a floating connector are provided in the cavity formed by the front housing and the rear housing. The photoelectric sensor is located behind the lens and is fixedly connected to the front housing. The front end of the floating connector is connected to the rear plate surface of the photoelectric sensor.

[0007] The floating connector includes a front sleeve, a middle sleeve, and a rear sleeve that are elastically inserted from front to back. The front sleeve, the middle sleeve, and the rear sleeve are respectively equipped with a front electrical terminal, a middle electrical terminal, and a rear electrical terminal. The three electrical terminals are also elastically inserted from front to back. Insulation is provided between the front electrical terminal and the front sleeve, between the middle electrical terminal and the middle sleeve, and between the rear electrical terminal and the rear sleeve. The electrical pin at the beginning of the front electrical terminal is electrically connected to the photoelectric sensor. The front end of the front sleeve is fixedly connected to the rear plate of the photoelectric sensor. The outer wall of the rear sleeve is fixedly connected to the inner wall of the rear housing.

[0008] This utility model mainly features three sleeves and electrical terminals that are elastically connected end to end. This allows the floating amount of the entire floating connector to be composed of the superposition of the floating amounts of the two elastically connected layers. Compared with existing technologies such as CN117937169A, the floating connector can withstand a wider threshold range of floating deviation, ensuring that this threshold is greater than the positional deviation between the camera's electrical terminal and the photoelectric sensor, thus avoiding any impact on the camera's accuracy. Attached Figure Description

[0009] Figure 1 Cross-sectional view of the camera after removing the floating connector;

[0010] Figure 2 A bottom view of the camera after removing the rear housing;

[0011] Figure 3 , 4 The figures are a half-section view and an isometric view of the floating connector, respectively.

[0012] Figure 5 , 6 These are exploded diagrams of the sleeve and the electrical terminal, respectively. Detailed Implementation

[0013] See Figures 1-6The camera shown includes a front housing 2 and a rear housing 3 that are fixedly connected. The front housing 2 has a cylindrical cavity for accommodating a lens 1. The light incident mirror 1a of the lens 1 mounted on the front housing 2 is exposed on the outer cover of the front housing 2. The cavity formed by the front housing 2 and the rear housing 3 is provided with a plate-shaped photoelectric sensor 10 and a floating connector. The photoelectric sensor 10 is located behind the lens 1 and is fixedly connected to the front housing 2. The front end of the floating connector is connected to the rear plate surface of the photoelectric sensor 10.

[0014] The floating connector includes a front sleeve 21, a middle sleeve 31, and a rear sleeve 41 that are elastically inserted from front to back. A front electrical terminal 23, a middle electrical terminal 33, and a rear electrical terminal 43 are respectively installed inside the front sleeve 21, the middle sleeve 31, and the rear sleeve 41. The three electrical terminals are also elastically inserted from front to back. Insulation is provided between the front electrical terminal 23 and the front sleeve 21, between the middle electrical terminal 33 and the middle sleeve 31, and between the rear electrical terminal 43 and the rear sleeve 41. The electrical pin 232 at the front end of the front electrical terminal 23 is electrically connected to the photoelectric sensor 10. The front end of the front sleeve 21 is fixedly connected to the rear plate of the photoelectric sensor 10. The outer wall of the rear sleeve 41 is fixedly connected to the inner wall of the rear housing 3.

[0015] In the above scheme, the front housing 2 is made of PPS material, which has good adhesion to the lens 1, ensuring that the lens 1 is firmly installed. The front housing 2 and the rear housing 3 are fixed by laser welding, and the photoelectric sensor 10 is connected to the front housing 2 by screws. Figure 2 , 4 As shown in Figure 5, the front sleeve 21 has four radially outwardly opening welding pins 212 at its front end, which are welded to the rear plate of the photoelectric sensor 10. The outer wall of the rear sleeve 41 is snapped and fixed to the inner wall of the rear housing 3. Since the front sleeve 21, the middle sleeve 31 and the rear sleeve 41, and the front electrical terminal 23, the middle electrical terminal 33 and the rear electrical terminal 43 are elastically inserted from front to back respectively, the floating connector is reserved with at least ±0.5mm of floating space relative to the photoelectric sensor 10 in both the front-to-back direction and the radial direction. This eliminates the stress effect of the connectors in traditional camera manufacturing on the photoelectric sensor 10 and avoids the installation error caused by the laser welding of the front housing 2 and the rear housing 3 from affecting the accuracy of the camera.

[0016] A more specific solution involves placing a front insulating sleeve 22 between the front terminal 23 and the front sleeve 21, a middle insulating sleeve 32 between the middle terminal 33 and the middle sleeve 31, and a rear insulating sleeve 42 between the rear terminal 43 and the rear sleeve 41, respectively. Each of the three insulating sleeves is fixedly connected to its corresponding sleeve and the corresponding terminal. In this solution, the middle insulating sleeve 32 and the rear insulating sleeve 42 are both formed by the curing of insulating adhesive. The three insulating sleeves fix the positions of the three sleeves and the corresponding terminals, while also providing insulation. In order to improve the adhesion between the insulating sleeve and the sleeve and the electrical terminal respectively during the solidification, the outer tube wall of the middle section electrical terminal 33 in contact with the middle section insulating sleeve 32 is provided with an outwardly protruding middle section terminal protrusion 332, the rod wall of the rear electrical terminal 43 in contact with the rear insulating sleeve 42 is provided with an outwardly protruding rear terminal protrusion 431, and the inner tube wall of the rear sleeve 41 in contact with the rear insulating sleeve 42 is provided with an inwardly concave rear sleeve recess 412.

[0017] To facilitate the insertion and assembly between the front sleeve 21 and the middle sleeve 31, the rear end of the front insulating sleeve 22 is provided with a radially outwardly extending annular flange 221. The outer diameter of the flange 221 is larger than the diameter of the pipe opening at the rear end of the front sleeve 21. This prevents the front pipe opening of the middle sleeve 31 from being mistakenly inserted into the pipe gap between the front sleeve 21 and the front insulating sleeve 22. A further option is that the inner wall of the front pipe opening of the middle sleeve 31 and the rear sleeve 41 has a guide cone surface or is an integrally flared pipe opening, also for the purpose of facilitating insertion and assembly.

[0018] To achieve flexible insertion between the three sleeves, the front sleeve 21 and the middle sleeve 31 are respectively provided with an integrally drum-shaped flexible expansion section 211 and a flexible expansion section 311 on their rear pipe sections. The flexible expansion section 211 of the front sleeve and the inner wall of the middle sleeve 31, and the flexible expansion section 311 of the middle sleeve and the inner wall of the rear sleeve 41, form an elastic pressing fit. Both the flexible expansion section 211 and the flexible expansion section 311 of the middle sleeve can expand or contract elastically in the radial direction. During insertion, their radial expansion or contraction amount is the radial floating amount of the floating insertion part. The middle pipe diameter of the flexible expansion section 211 of the front sleeve is larger than its rear pipe diameter and the front pipe diameter connecting to the front sleeve 21; similarly, the middle pipe diameter of the flexible expansion section 311 of the middle sleeve is larger than its rear pipe diameter and the front pipe diameter connecting to the middle sleeve 31.

[0019] Since the front section of the middle sleeve 31 is elastically connected to the front sleeve 21 through the elastic expansion part 211 of the front sleeve, and the rear section of the middle sleeve 31 is elastically connected to the rear sleeve 41 through the elastic expansion part 311 of the middle sleeve, the middle sleeve 31 is the floating connection position of the entire floating connector, that is, the middle sleeve 31 can achieve small displacement in both the radial and axial directions.

[0020] More specifically, the front sleeve elastic expansion section 211 and the middle sleeve elastic expansion section 311 are respectively composed of multiple petal-shaped front sleeve petal units 211a and middle sleeve petal units 311a. Adjacent front sleeve petal units 211a and middle sleeve petal units 311a are spaced apart in the circumferential direction. The front sleeve petal units 211a and the middle sleeve petal units 311a are integrally formed with the body of the front sleeve 21, and the middle sleeve petal units 311a and the middle sleeve 31 are integrally formed with the body of the middle sleeve 31. Both the front sleeve petal units 211a and the sleeve petal units 311a have elastic deformation capabilities, and the gaps between the front sleeve petal units 211a and the sleeve petal units 311a also provide radial floating amounts for the front sleeve elastic expansion section 211 and the middle sleeve elastic expansion section 311, respectively.

[0021] The rear sections of the front terminal 23 and the middle terminal 33 are tubular, with a front terminal elastic insertion part 231 and a middle terminal elastic insertion part 331 respectively at their rear ends. The walls of the front terminal elastic insertion part 231 and the middle terminal elastic insertion part 331 are tapered or hourglass-shaped, and are surrounded by multiple front terminal elastic claws 231a and middle terminal elastic claws 331a arranged circumferentially at intervals. The middle section diameter of the front terminal elastic insertion part 231 is smaller than its rear end diameter and the front end diameter that connects to the front terminal 23; similarly, the middle section diameter of the middle terminal elastic insertion part 331 is smaller than its rear end diameter and the front end diameter that connects to the middle terminal 33. The principle by which the front terminal elastic claws 231a and the middle terminal elastic claws 331a elastically insert into the terminals is similar to the principle of elastic insertion of the elastic expansion part into the sleeve, and will not be repeated here.

[0022] Preferably, the front section of the rear sleeve 41 is provided with a limiting groove 411 that engages with the elastic expansion section 311 of the middle sleeve to limit the middle sleeve 31 and maintain the stability of the positional relationship between the middle sleeve 31 and the rear sleeve 41.

Claims

1. A camera, comprising a front housing (2) and a rear housing (3) fixedly connected, wherein the front housing (2) is provided with a cavity for accommodating a lens (1), and the light incident mirror (1a) of the lens (1) mounted on the front housing (2) is exposed at the outer cover surface of the front housing (2), and a plate-shaped photoelectric sensor (10) and a floating connector are provided in the cavity formed by the front housing (2) and the rear housing (3), wherein the photoelectric sensor (10) is located behind the lens (1) and fixedly connected to the front housing (2), and the front end of the floating connector is connected to the rear plate surface of the photoelectric sensor (10), characterized in that: The floating connector includes a front sleeve (21), a middle sleeve (31), and a rear sleeve (41) that are elastically inserted from front to back. A front electrical terminal (23), a middle electrical terminal (33), and a rear electrical terminal (43) are respectively installed inside the front sleeve (21), the middle sleeve (31), and the rear sleeve (41). The three electrical terminals are also elastically inserted from front to back. The front electrical terminal (23) is connected to the front sleeve (21). Insulation is provided between 21), between the middle section power terminal (33) and the middle section sleeve (31), and between the rear power terminal (43) and the rear sleeve (41). The power pin (232) at the beginning of the front power terminal (23) is electrically connected to the photoelectric sensor (10). The front end of the front sleeve (21) is fixedly connected to the rear plate of the photoelectric sensor (10). The outer wall of the rear sleeve (41) is fixedly connected to the inner wall of the rear housing (3).

2. The camera according to claim 1, characterized in that: A front insulating sleeve (22), a middle insulating sleeve (32), and a rear insulating sleeve (42) are respectively fitted between the front electrical terminal (23) and the front sleeve (21), between the middle electrical terminal (33) and the middle sleeve (31), and between the rear electrical terminal (43) and the rear sleeve (41), and the three insulating sleeves are respectively fixedly connected to the corresponding three sleeves and three electrical terminals.

3. The camera according to claim 2, characterized in that: The rear end of the front insulating sleeve (22) is provided with a radially outwardly extending annular flange (221), the outer diameter of which is larger than the diameter of the tube opening at the rear end of the front sleeve (21).

4. The camera according to claim 1, characterized in that: The front sleeve (21) and the middle sleeve (31) are respectively provided with an integral drum-shaped elastic expansion section (211) and an elastic expansion section (311) on the rear pipe section. The elastic expansion section (211) of the front sleeve and the inner wall of the middle sleeve (31) form an elastic pressing fit, and the elastic expansion section (311) of the middle sleeve and the inner wall of the rear sleeve (41) form an elastic pressing fit.

5. The camera according to claim 4, characterized in that: The front sleeve elastic expansion section (211) and the middle sleeve elastic expansion section (311) are respectively surrounded by multiple petal-shaped front sleeve petal units (211a) and middle sleeve petal units (311a). The front sleeve petal units (211a) and the middle sleeve petal units (311a) are arranged at intervals in the circumferential direction. The front sleeve petal units (211a) and the cylinder of the front sleeve (21) are integrally formed, and the middle sleeve petal units (311a) and the cylinder of the middle sleeve (31) are integrally formed.

6. The camera according to claim 4, characterized in that: The front section of the rear sleeve (41) is provided with a limiting groove (411) that engages with the elastic expansion section (311) of the middle sleeve.

7. The camera according to claim 1, characterized in that: The inner wall of the front opening of the middle sleeve (31) and the rear sleeve (41) has a guide cone surface or is an overall flared opening.

8. The camera according to claim 1, characterized in that: The rear sections of the front electrical terminal (23) and the middle electrical terminal (33) are tubular, and the rear ends of the tubes are respectively provided with a front terminal elastic plug-in part (231) and a middle terminal elastic plug-in part (331). The tube walls of the front terminal elastic plug-in part (231) and the middle terminal elastic plug-in part (331) are generally waist-shaped, and are respectively surrounded by multiple front terminal elastic claws (231a) and middle terminal elastic claws (331a) arranged circumferentially at intervals.

9. The camera according to claim 2, characterized in that: The outer tube wall where the middle section electrical terminal (33) contacts the middle section insulating sleeve (32) is provided with an outwardly protruding middle section terminal protrusion (332), the rod wall where the rear electrical terminal (43) contacts the rear insulating sleeve (42) is provided with an outwardly protruding rear terminal protrusion (431), and the inner tube wall where the rear sleeve (41) contacts the rear insulating sleeve (42) is provided with an inwardly concave rear sleeve recess (412).

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