A shielding cover mounting structure and mounting method for an automobile motor speed sensor

Abstract

The present invention discloses a shielding cover mounting structure for an automotive motor speed sensor, which relates to the technical field of shielding cover mounting for automotive motor speed sensors. The structure comprises a sensor plastic housing, wherein a plurality of clips are spaced apart at the outer edge of the sensor plastic housing; a shielding cover, wherein a plurality of slots are spaced apart at the outer edge of the shielding cover, wherein the clips engage the slots; an ear connecting plate extending outward from the shielding cover, wherein the ear connecting plate is mounted on a mounting surface; a PCB board, wherein the PCB board is overmolded within the interior of the sensor plastic housing; and a grounding pin, wherein one end of the grounding pin is connected to the PCB board, and the other end of the grounding pin is exposed outside the sensor plastic housing. By adopting the above technical solution, the present invention can save materials, reduce costs, and easily achieve grounding.

Description

Technical Field

[0001] The present invention relates to the technical field of mounting a shielding cover of an automobile motor speed sensor, and in particular to a mounting structure and a mounting method of a shielding cover of an automobile motor speed sensor. Background Art

[0002] During the use of the motor speed sensor, the high-speed rotation of the motor will generate an electromagnetic field that will affect the sensor accuracy. Therefore, it is necessary to install a shielding cover on the sensor and ground it to absorb the interference signal and transmit the interference signal through the grounding to ensure the accuracy and stability of the sensor.

[0003] At present, the installation of the shielding cover is mainly through the matching of the mounting holes on the shielding cover with the screw holes on the sensor plastic shell of the sensor and the installation is carried out on the installation surface to be installed by screws. The plastic shell of the sensor with this structure must have a screw hole structure that matches the mounting surface. During installation, this screw hole structure is used to achieve connection with the mounting surface. This screw hole and the sensor plastic shell are connected together by injection molding. Therefore, the volume of the sensor plastic shell is large, the material used in the sensor plastic shell is large, the cost is high, and there is not much advantage in the market competition. At the same time, this structure also makes it difficult to achieve grounding of the sensor.

[0004] like Figure 7 As shown, the shielding cover 2' has a mounting hole 21', and the sensor plastic housing 1' has a plurality of outwardly extending extension surfaces 11'. The extension surfaces 11' have screw holes 12' that match the customer's mounting surface 5'. The mounting holes 21' correspond to the screw holes 12'. During installation, the screws need to first pass through the mounting holes 21' and then through 12' before being installed on the mounting surface 5'. Therefore, the sensor plastic housing 1' uses more materials, has higher costs, and occupies more space.

[0005] In view of this, the present invention aims at the many deficiencies and inconveniences caused by the imperfections mentioned above, and has been deeply conceived, and actively researched, improved and tried to develop and design the present invention. Summary of the Invention

[0006] The purpose of the present invention is to address the defects and shortcomings of the existing technology and provide a shield cover installation structure and installation method for an automobile motor speed sensor that can save materials, reduce costs, and easily achieve grounding.

[0007] To achieve the above object, the present invention adopts the following technical solutions:

[0008] A shielding cover mounting structure for an automobile motor speed sensor, comprising

[0009] A sensor plastic housing, wherein a plurality of buckles are arranged at intervals on the outer edge of the sensor plastic housing;

[0010] A shielding cover, wherein a plurality of bayonet holes cooperating with the buckle are arranged at intervals on the outer edge of the shielding cover, the buckle is snapped into the bayonet hole, and an ear connecting plate extends outward from the shielding cover, and the ear connecting plate is mounted on the mounting surface;

[0011] A PCB board, the PCB board being overmolded inside the plastic housing of the sensor;

[0012] A grounding PIN pin, one end of which is connected to the PCB board, and the other end of which is exposed outside the plastic housing of the sensor.

[0013] Furthermore, the ear connecting plate is provided with a mounting hole, and the ear connecting plate is connected by screws passing through the mounting hole.

[0014] A method for installing a shielding cover of an automobile motor speed sensor comprises the following steps:

[0015] Step 1: Connect one end of the ground pin to the PCB using a crimp method, leaving the other end of the ground pin exposed.

[0016] Step 2: The PCB is overmolded inside the sensor's plastic housing, with the other end of the ground pin exposed outside the sensor's plastic housing.

[0017] Step 3: Insert the buckle of the sensor plastic housing into the notch of the shielding cover. The shielding cover is snapped into the sensor plastic housing. When the shielding cover is pressed down against the sensor plastic housing, elastic deformation occurs, and the shielding cover contacts and connects with the end of the grounding pin exposed outside the sensor plastic housing.

[0018] Step 4: Install the shielding cover on the mounting surface by screwing the screws through the screw mounting holes on the ear connecting plate of the shielding cover.

[0019] After adopting the above technical solution, the present invention forms a sensor body through a connection method that cooperates with a snap and a bayonet; in this way, the sensor body can be directly installed on the customer's installation interface through the shielding cover, replacing the original method of installing it on the mounting surface by screws passing through the mounting holes on the shielding cover and the screw holes on the sensor plastic shell in sequence. The sensor plastic shell no longer needs an extension surface extending outward, saving the use of materials and reducing costs; at the same time, the connection between the grounding PIN pin and the shielding cover is realized, thereby realizing sensor grounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural schematic diagram of the present invention after installation.

[0022] Figure 2 It is a schematic structural diagram of the shielding cover of the present invention.

[0023] Figure 3 It is a structural schematic diagram of the plastic housing of the sensor of the present invention.

[0024] Figure 4 It is a structural schematic diagram of the PCB board of the present invention.

[0025] Figure 5 It is an exploded view of the present invention.

[0026] Figure 6 It is a schematic diagram of the bottom structure of the present invention.

[0027] Figure 7 It is a structural diagram of the prior art. DETAILED DESCRIPTION

[0028] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0029] In the description of the present invention, it should be understood that terms such as "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] See Figures 1-6 As shown, the present invention discloses a shield cover installation structure of an automobile motor speed sensor, which includes a sensor plastic shell 1, a shield cover 2, a PCB board 3, a grounding PIN needle 4, and a mounting surface 5.

[0031] A plurality of clips 11 are arranged at intervals on the outer edge of the sensor plastic housing 1; a plurality of bayonet holes 21 that cooperate with the clips 11 are arranged at intervals on the outer edge of the shielding cover 2, and the clips 11 are snapped into the bayonet holes 21. The shielding cover 2 has an ear connecting plate 22 extending outward, and the ear connecting plate 22 has a mounting hole 221. The ear connecting plate 22 is locked to the mounting surface 5 by passing a screw (not shown in the figure) through the mounting hole 221.

[0032] The PCB board 3 is overmolded inside the sensor plastic housing 1 .

[0033] One end of the grounding PIN needle 4 is connected to the PCB board 3 , and the other end of the grounding PIN needle 4 is exposed outside the sensor plastic housing 1 .

[0034] Specifically, the shape and size of the sensor plastic housing 1 can be designed according to customer requirements; the shape and size of the shielding cover 2 can be designed according to customer requirements; the shape, size and position of the PCB board 3 can be adjusted according to the product shape and the distribution of electronic components; the shape and size of the grounding PIN needle 4 can be designed according to the contact area and customer requirements.

[0035] The present invention also discloses a method for installing a shielding cover mounting structure of an automobile motor speed sensor, which comprises the following steps:

[0036] Step 1: Connect one end of the ground pin to the PCB using a crimp method, leaving the other end of the ground pin exposed.

[0037] Step 2: The PCB is overmolded inside the sensor's plastic housing, with the other end of the ground pin exposed outside the sensor's plastic housing.

[0038] Step 3: Insert the buckle of the sensor plastic housing into the notch of the shielding cover. The shielding cover is snapped into the sensor plastic housing. When the shielding cover is pressed down against the sensor plastic housing, elastic deformation occurs, and the shielding cover contacts and connects with the end of the grounding pin exposed outside the sensor plastic housing.

[0039] Step 4: Install the shielding cover on the mounting surface by screwing the screws through the screw mounting holes on the ear connecting plate of the shielding cover.

[0040] The working principle of the present invention is as follows: the present invention provides a snap on the sensor plastic shell and a bayonet on the shielding cover, so that the sensor plastic shell and the shielding cover are connected by a connection method that cooperates with the snap and the bayonet, and the PCB board is overmolded on the sensor plastic shell to form a sensor body; in this way, the sensor body can be directly installed on the customer's installation interface through the shielding cover, replacing the original method of installing it on the installation surface by screws passing through the mounting holes on the shielding cover and the screw holes on the sensor plastic shell in sequence. The sensor plastic shell no longer needs an extension surface extending outward, saving the use of materials, reducing costs, and reducing the space and area occupied by the sensor plastic shell, making the sensor more miniaturized; at the same time, one end of the grounding PIN pin is connected to the PCB board by crimping, and the other end of the grounding PIN pin is exposed. After the shielding cover 2 is pressed downward, it elastically deforms to achieve contact and connection with the PIN pin, thereby realizing sensor grounding.

[0041] The above description is only used to illustrate the technical solution of the present invention and is not intended to limit it. Other modifications or equivalent substitutions made to the technical solution of the present invention by ordinary technicians in this field should be included in the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solution of the present invention.

Claims

1. A shielding cover mounting structure for an automobile motor speed sensor, characterized in that: It includes A sensor plastic housing, wherein a plurality of snaps are provided at intervals on the outer edge of the sensor plastic housing; a shielding cover, wherein a plurality of bayonet holes that cooperate with the snaps are provided at intervals on the outer edge of the shielding cover, wherein the snaps are snapped into the bayonet holes; an ear connecting plate extending outward from the shielding cover, wherein the ear connecting plate has a mounting hole, and wherein the ear connecting plate is mounted on the mounting surface by screws passing through the mounting holes; A PCB board, the PCB board being overmolded inside the plastic housing of the sensor; A grounding PIN, one end of which is connected to the PCB board, and the other end of which is exposed outside the plastic housing of the sensor; The shielding cover is snap-fitted to the sensor plastic housing. When the shielding cover is pressed downward against the sensor plastic housing, elastic deformation occurs, and the shielding cover contacts and connects with the end of the grounding PIN exposed outside the sensor plastic housing.

2. A method for installing the shielding cover mounting structure of the automotive motor speed sensor according to claim 1, characterized in that: Step 1: Connect one end of the ground pin to the PCB using a crimp method, leaving the other end of the ground pin exposed. Step 2: The PCB is overmolded inside the sensor's plastic housing, with the other end of the ground pin exposed outside the sensor's plastic housing. Step 3: Insert the buckle of the sensor plastic housing into the notch of the shielding cover. The shielding cover is snapped into the sensor plastic housing. When the shielding cover is pressed down against the sensor plastic housing, elastic deformation occurs, and the shielding cover contacts and connects with the end of the grounding pin exposed outside the sensor plastic housing. Step 4: Install the shielding cover on the mounting surface by screwing the screws through the screw mounting holes on the ear connecting plate of the shielding cover.

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