Fixing mechanism

Abstract

The utility model discloses a fixing mechanism, comprising an insulating body part which extends along a first direction and is provided with an accommodating cavity used for accommodating a first part; the insulating body part comprises an opening, the accommodating cavity is communicated with the outside through the opening, and the opening is used for allowing a first part to pass through and enter the accommodating cavity; the multiple positioning parts are arranged on the outer wall of the insulating body part at intervals, each positioning part extends outwards in the direction opposite to the containing cavity in the second direction, the multiple positioning parts are used for positioning in the injection molding process, and the first direction intersects with the second direction; the insulation body part is further used for being formed with two second parts in an injection molding mode, the insulation body part wraps the middle of each second part, the two second parts are arranged on the two opposite sides of the containing cavity in the second direction, and the first end of each second part extends outwards in the first direction to exceed the insulation body part. According to the fixing mechanism, the fixing structure can be simplified, the fixing effect is enhanced, and the cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially a fixing mechanism. BACKGROUND

[0002] With the rapid development of automobile electronic control system, the magnetoelectric sensor is more and more widely used in the whole vehicle system. Among them, the magnetoelectric sensor generally includes winding shaft assembly, magnetic steel and insert piece and other components. However, the winding shaft assembly in the prior art has poor fixing effect on the magnetic steel and the insert piece and other components, which easily leads to the displacement of the components in the subsequent process to produce waste products, often needs to increase other components for fixing, and the cost is high.

[0003] Therefore, it is urgent to design a fixing mechanism with good fixing effect and simple structure to fix the magnetic steel and the insert piece and other components to meet the design needs of the market. SUMMARY

[0004] The utility model discloses a fixing mechanism can simplify the fixed structure, enhance the fixed effect, reduce the cost.

[0005] To solve the above technical problems, the embodiment of the utility model discloses a kind of fixing mechanism, comprising: insulation body part, along first direction extends, with accommodating cavity, the accommodating cavity is used to accommodate the first component part;The insulation body part includes opening, the accommodating cavity is communicated with outside by the opening, the opening is used for the first component part passes through and enters the accommodating cavity;Multiple positioning parts, the multiple positioning parts are spaced apart in the outer wall of the insulation body part, and each positioning part is extended outward along second direction away from the accommodating cavity, the multiple positioning parts are all used for positioning in injection molding process, the first direction and the second direction intersect;The insulation body part is also used to be injection molded with two second component parts, the insulation body part is wrapped in the middle part of each second component part, along the second direction, the two second component parts are located on the opposite sides of the accommodating cavity, and the first end of each second component part is extended outward along the first direction and exceeds the insulation body part.

[0006] According to the technical scheme, the first component is accommodated in the accommodating cavity of the insulating body part, and the second component is injection molded together with the insulating body part, so that the first component and the second component are insulated and connected, and the first component and the second component are fixed respectively. Therefore, the fixing mechanism is fixed in the mold of the injection molding process through the plurality of positioning parts on the insulating body part, and is positioned in multiple directions. The sufficient positioning parts can not only improve the rigidity of the fixing mechanism, avoid the generation of waste products due to insufficient positioning structure and rigidity in the subsequent injection molding process, but also reduce the number of components for auxiliary positioning and reduce the cost.

[0007] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing mechanism, and the plurality of positioning parts comprise: a first positioning column; a second positioning column, which is arranged on the side of the first positioning column away from the opening along the first direction; two third positioning columns, which are arranged on opposite sides of the insulating body part along the second direction and correspond to the two second components respectively; and a fourth positioning column, which is arranged on the opposite side of the insulating body part along the second direction together with the first positioning column.

[0008] According to the technical scheme, the fixing mechanism of the embodiment of the present application is matched with the mold of the injection molding process through the first positioning column, the second positioning column and the fourth positioning column, so as to realize vertical positioning of the fixing mechanism. In addition, two third positioning columns are arranged at the positions where the two second components are arranged, so as to realize lateral positioning of the fixing mechanism during injection molding. Therefore, the plurality of positioning parts of the embodiment of the present application jointly form circumferential positioning, so as to improve the positioning effect of the fixing mechanism of the embodiment of the present application and have high stability.

[0009] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing mechanism, and the first positioning column and each third positioning column are provided with a positioning hole, which extends along the second direction and is matched with an external positioning structure during injection molding to realize positioning.

[0010] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing mechanism, and the first sealing member is arranged on the outer wall of the insulating body part, surrounds the first positioning column in the circumferential direction of the first positioning column, and is arranged in a spaced manner with the first positioning column.

[0011] According to another specific embodiment of the present application, the embodiment of the present application discloses a fixing mechanism, and each third positioning column comprises a second sealing member, which is arranged on the outer wall of the third positioning column and extends in the circumferential direction of the third positioning column.

[0012] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the wall thickness of the first positioning column is greater than or equal to 1.5mm, the width of the second positioning column is greater than or equal to 1.5mm, the wall thickness of the third positioning column is greater than or equal to 1.5mm, and the width of the fourth positioning column is greater than or equal to 1.5mm.

[0013] By increasing the size of the first positioning column, the second positioning column, the third positioning column and the fourth positioning column, the positioning stiffness of the fixing mechanism is ensured.

[0014] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the insulating body part further comprises: two recessed parts arranged on the side wall of the accommodating cavity, the two recessed parts are symmetrically arranged relative to the accommodating cavity along the first direction, and the two recessed parts are alternately and spacedly arranged with the two third positioning columns along a third direction, and the third direction surrounds the first direction; two fixing parts corresponding to the two recessed parts respectively, one end of each fixing part is connected to the bottom wall of the corresponding recessed part, and the other end of each fixing part is provided with a limiting part, and the limiting part is used for being connected with the end of the first component to limit the outward movement of the first component relative to the insulating body part along the first direction.

[0015] By connecting the limiting part provided at the other end of the fixing part with the end of the first component, the movement of the first component relative to the insulating body part along the first direction is limited, the fixing effect of the first component is achieved, and the first component is prevented from falling off from the accommodating cavity of the insulating body part.

[0016] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the limiting part comprises a reverse-docking boss, the reverse-docking boss is protruded at the other end of the fixing part, and the reverse-docking bosses of the two fixing parts are oppositely arranged along the second direction, and the reverse-docking boss is used for abutting against the end of the first component to limit the outward movement of the first component relative to the insulating body part along the first direction.

[0017] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the insulating body part further comprises two convex parts extending along the first direction and arranged on the side wall of the accommodating cavity, and the two convex parts are alternately and spacedly arranged with the two recessed parts along a third direction, and the two convex parts are used for one-to-one corresponding injection molding with the middle parts of the two second components, the first end of each second component extends outward beyond the convex part along the first direction, and the outer surface of each convex part is provided with a third positioning column.

[0018] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the insulating body part still includes the barrier part, the barrier part is located the outer wall of the insulating body part, and along the second direction, the barrier part is used to abut with the second end of the second component after being bent, so that the second end of two second components is spaced apart along the third direction.

[0019] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, still including the winding post, along the first direction extension, the winding post is connected to with the insulating body part away from the opening one end, the both ends of the winding post are equipped with the limiting protrusion, the limiting protrusion is protruded on the outer surface of the winding post, along the first direction, two limiting protrusions are used to wind the coil between, the coil has the wire inlet end and the wire outlet end, is connected with the second end of two second components respectively, the limiting protrusion close to the insulating body part is equipped with the wire inlet and the wire outlet, along the third direction, the wire inlet and the wire outlet are spaced apart.

[0020] According to another specific embodiment of the utility model, the embodiment of the utility model discloses a fixing mechanism, the limiting protrusion away from the insulating body part includes the third sealing element, the third sealing element is located the side wall of the limiting protrusion away from the insulating body part, and extends along the third direction.

[0021] Adopt the technical scheme, the application embodiment adopts the limiting protrusion away from the insulating body part and multiple positioning parts and is composed of multidirectional positioning, has very high stability. And, the third sealing element is high in melt degree with injection molding material when injection molding, and good sealing. Thus, the connection firmness and the sealing of the insulating body part and the winding post with injection molding material are enhanced, prevent the injection molding material from forming the interlayer with the insulating body part and the winding post, and then avoid the moisture from the interlayer and enter to corrode the second component and the first component. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 Show the fixing mechanism, the magnetic steel and the perspective of the insert sheet of the utility model embodiment Figure 1 ;

[0023] Figure 2 Show the fixing mechanism, the magnetic steel and the perspective of the insert sheet of the utility model embodiment Figure 2 ;

[0024] Figure 3 Show the fixing mechanism, the magnetic steel and the front view of the insert sheet of the utility model embodiment;

[0025] Figure 4The fixed mechanism, the magnetic steel and the insert piece of the embodiment of the utility model are shown in the perspective view Figure 3 ;

[0026] Figure 4 The fixed mechanism, the magnetic steel and the insert piece of the embodiment of the utility model are shown in the perspective view Figure 1 . DETAILED DESCRIPTION

[0027] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. Although the description of the present application will be introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0028] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0029] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated fixed mechanism or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0030] The terms "first", "second" and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0032] In order to make the purpose, technical scheme and advantages of the utility model more clear, the embodiments of the utility model will be described in further detail below with reference to the drawings.

[0033] The winding shaft assembly of the magnetoelectric sensor in the prior art has poor fixing effect of components, the components are prone to deviation in subsequent production processes, resulting in waste products, and affecting production cost.

[0034] In order to improve the fixing effect and reduce the cost, with reference to Figure 1 The fixing mechanism 1 is used for fixing and positioning components (for example, the first component and the second component described below) in the injection molding process, and the positioning structure of the fixing mechanism 1 is designed to simplify the fixing structure of the components and enhance the fixing effect of the components on the fixing mechanism 1.

[0035] Exemplarily, the fixing mechanism 1 of the embodiments of the application is applied to the field of magnetoelectric sensors. Moreover, the first component is a magnetic steel 2, and the second component is an insert piece 3. It can be understood that the embodiments of the application do not limit the application field of the fixing mechanism 1, and the types of the first component and the second component.

[0036] In order to facilitate the description, the first component is the magnetic steel 2, and the second component is the insert piece 3.

[0037] With reference to Figure 2 and in combination with Figure 1 The fixing mechanism 1 of the embodiments of the application comprises an insulating body part 10 and a positioning part 11, and the insulating body part 10 is used for fixing the magnetic steel 2 and the insert piece 3. Exemplarily, the fixing mechanism 1 of the embodiments of the application is provided with six positioning parts 11, one magnetic steel 2, and two insert pieces 3. However, the embodiments of the application do not specifically limit the number of the positioning parts 11, for example, it can also be five, seven, eight or more.

[0038] In order to facilitate the description, one magnetic steel 2, two insert pieces 3 and six positioning parts 11 are taken as examples for description.

[0039] Specifically, as shown in Figure 1 the insulating body part 10 is arranged along a first direction (for example, the direction of the arrow A in the figure). Figure 2The insulation body part 10 has a receiving cavity 101 extending along the first direction X. The magnetic steel 2 extends along the first direction X and is received in the receiving cavity 101. The insulation body part 10 further includes an opening 102 through which the receiving cavity 101 is in communication with the outside, so that the magnetic steel 2 can pass through the opening 102 and enter the receiving cavity 101 along the first direction X. In the present embodiment, the outside refers to the space outside the receiving cavity 101. For example, the receiving cavity 101 of the present embodiment is a cylindrical cavity, which is adapted to the shape of the cylindrical magnetic steel 2.

[0040] With reference to Figure 1 and in combination Figure 1 The six positioning parts 11 are arranged on the outer wall of the insulation body part 10 and are used for positioning with the outside (for example, a mold used for injection molding) during the injection molding process. For example, each positioning part 11 extends outwardly away from the receiving cavity 101 along the second direction (i.e., the radial direction of the fixing mechanism 1, as shown in the Y direction in FIG. 1). Figure 2 and Figure 2 The first direction X intersects the second direction Y.

[0041] Therefore, the fixing mechanism 1 is fixed in the mold of the injection molding process by the six positioning parts 11 arranged on the insulation body part 10. The sufficient number of positioning parts 11 not only improves the rigidity of the fixing mechanism 1 to avoid the generation of waste products due to insufficient positioning structure and rigidity in the subsequent injection molding process, but also reduces the number of parts used for auxiliary positioning and reduces the cost.

[0042] In addition, as shown in Figure 3 , the insulation body part 10 further has two tabs 3 arranged on opposite sides of the magnetic steel 2 along the second direction Y, and each tab 3 is insulatedly connected with the magnetic steel 2. For example, the insulation body part 10 and the tabs 3 of the present embodiment are integrally injection molded. The tab 3 includes a first end 301, a second end 302, and a middle part (not shown in the figure). The middle part of the tab 3 is injection molded in the insulation body part 10, that is, the insulation body part 10 wraps the middle part of each tab 3, and the first end 301 of each tab extends outwardly along the first direction X to protrude from the first end 1001 of the insulation body part. Injection molding the middle part of the tab 3 in the insulation body part 10 increases the firmness of the connection between the tab 3 and the insulation body part 10, and separates the tab 3 and the magnetic steel 2 by the injection material, so that the magnetic steel 2 and the tab 3 are insulatedly connected.

[0043] The structure and working principle of the positioning part 11 of the present embodiment will be described in detail below with reference to the accompanying drawings.

[0044] With reference to Figure 4 and Figure 1 in combination Figure 2 andFigure 3 The six positioning portions 11 of the fixing mechanism 1 of the embodiment of the present application include a first positioning column 111, a second positioning column 112, a third positioning column 113, and a fourth positioning column 114. Exemplarily, the first positioning column 111 is provided with one, the second positioning column 112 is provided with one, the third positioning column 113 is provided with two, and the fourth positioning column is provided with two.

[0045] Specifically, as shown in Figure 4 and Figure 3 , the first positioning column 111 and the second positioning column 112 are arranged on the outer wall of the insulating body portion 10 along the first direction X, and the second positioning column 112 is arranged on the side of the first positioning column 111 away from the opening 102 of the insulating body portion 10. Along the second direction Y, the two fourth positioning columns 114 are arranged on the outer wall of the other side of the insulating body portion 10 relative to the first positioning column 111 and the second positioning column 112, and the two fourth positioning columns 114 are arranged opposite to the first positioning column 111 and the second positioning column 112, respectively. Thus, the fixing mechanism 1 of the embodiment of the present application is matched with the mold of the injection molding process through the first positioning column 111, the second positioning column 112, and the fourth positioning column 114, so as to realize the vertical (as indicated by the direction E in Figure 3 ) positioning of the fixing mechanism 1.

[0046] Continuing to refer to Figure 4 and combining Figure 3 , along the second direction Y, the two third positioning columns 113 are arranged on the opposite sides of the insulating body portion 10 and correspond to the two insertion pieces 3, respectively. That is, the two third positioning columns 113 are arranged on the positions where the insulating body portion 10 is provided with the two insertion pieces 3, so as to realize the lateral (as indicated by the direction F in Figure 3 ) positioning of the fixing mechanism 1 during injection molding. Thus, the six positioning portions 11 of the embodiment of the present application collectively constitute the circumferential (i.e., the third direction, as indicated by the direction R in Figure 4 ) positioning, so as to improve the positioning effect of the fixing mechanism 1 of the embodiment of the present application and have high stability.

[0047] Exemplarily, as shown in Figure 1 to Figure 3 , the first positioning column 111 and each third positioning column 113 are provided with a positioning hole 115 extending along the second direction Y. That is, the first positioning column 111 and each third positioning column 113 are cylindrical positioning columns, so that the external positioning structure (for example, the corresponding positioning pin in the mold of the injection molding process, not shown in the figure) can respectively extend into the corresponding positioning hole 115 along the second direction Y, so as to enhance the plug-in cooperation between the positioning pin and the corresponding positioning column (for example, the first positioning column 111 and the third positioning column 113), and provide the positioning effect of the first positioning column 111 and the third positioning column 113. Moreover, each second positioning column 112 and each fourth positioning column 114 are solid square column type positioning columns.

[0048] This application embodiment does not specifically limit the structure of the first positioning post 111, the second positioning post 112, the third positioning post 113, and the fourth positioning post 114 in the positioning part 11 described above, as long as the fixing mechanism 1 can achieve a good positioning effect and high stability through the multiple positioning parts 11. For example, in this application embodiment, the first positioning post 111, the second positioning post 112, the third positioning post 113, and the fourth positioning post 114 can all be cylindrical hole-type positioning posts; or, they can all be solid square column-type positioning posts; or, the second positioning post 112 and the fourth positioning post 114 are cylindrical hole-type positioning posts, and the first positioning post 111 and the third positioning post 113 are solid square column-type positioning posts; or, the first positioning post 111 and the second positioning post 112 are cylindrical hole-type positioning posts, and the third positioning post 113 and the fourth positioning post 114 are solid square column-type positioning posts, etc.

[0049] Furthermore, this application embodiment does not specifically limit the number of the first positioning post 111, the second positioning post 112, the third positioning post 113, and the fourth positioning post 114. For example, in this application embodiment, the number of the first positioning post 111 can be two, three, four, or more; the number of the second positioning post 112 can be two, three, four, or more; the number of the third positioning post 113 can be one, three, four, or more; and the number of the fourth positioning post 114 can be one, three, four, or more.

[0050] For example, such as Figure 4 As shown, in this embodiment of the application, the wall thickness D1 of the first positioning post 111 and the wall thickness D2 of each third positioning post are both greater than or equal to 1.5 mm, and the width W1 of the second positioning post 112 and the width W2 of each fourth positioning post are both greater than or equal to 1.5 mm, to ensure the positioning rigidity of the plurality of positioning parts 11 in the fixing mechanism 1 of this embodiment of the application. However, it is not limited thereto, and this embodiment of the application does not specifically limit the dimensions of the first positioning post 111, the second positioning post 112, the third positioning post 113, and the fourth positioning post 114. For example, the wall thickness D1 of the first positioning post 111 and the wall thickness D2 of each third positioning post can be 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc.; and the width W1 of the second positioning post 112 and the width W2 of each fourth positioning post can be 1.5 mm, 2 mm, 2.5 mm, 3 mm, etc. Furthermore, the wall thickness D1 of the first positioning post 111 and the wall thickness D2 of each third positioning post 113 may be equal or unequal, and the width W1 of the second positioning post 112 and the width W2 of each fourth positioning post 114 may be equal or unequal, as long as the positioning stiffness of the fixing mechanism 1 in this application embodiment can be met.

[0051] In some possible implementation manners, the insulating body part 10 of the embodiment of the present application further comprises a first sealing member 1111. Specifically, as shown in Figure 4 the first sealing member 1111 is arranged on the outer wall of the insulating body part 10 and extends around the circumference of the first positioning column 111 and is arranged in a spaced manner with the first positioning column 111. Exemplarily, the first sealing member 1111 of the embodiment of the present application is a fusion rib, that is, two circles of fusion rib structures are designed on the periphery of the first positioning column 111, so that the first positioning column 111 can be better fused with the injection molding material in the subsequent injection molding process, thereby ensuring the sealing property of the product (for example, the above-mentioned magneto-electric sensor).

[0052] In some possible implementation manners, likewise, the third positioning column 113 of the embodiment of the present application comprises a second sealing member 1131. Specifically, as shown in Figure 3 the second sealing member 1131 is arranged on the outer wall of the third positioning column 113 and extends around the circumference of the third positioning column 113. Exemplarily, the second sealing member 1131 of the embodiment of the present application is a sealing rib, that is, two layers of sealing rib structures are arranged in a spaced manner on the outer wall of each third positioning column 113, so as to ensure the air tightness of the product (for example, the above-mentioned magneto-electric sensor) after injection molding.

[0053] The structure of the first sealing member 1111 and the second sealing member 1131 of the embodiment of the present application is not specifically limited, as long as it can be better fused with the injection molding material and ensure the air tightness of the product after injection molding. Moreover, the arrangement position of the first sealing member 1111 and the second sealing member 1131 of the embodiment of the present application is not specifically limited, for example, the second positioning column 112 and the fourth positioning column 114 can also comprise the first sealing member 1111 or the second sealing member 1131. That is, the first sealing member 1111 is designed on the periphery of the second positioning column 112, and the second sealing member 1131 is arranged on the outer wall of the fourth positioning column 114.

[0054] Continuing to refer to Figure 4 and Figure 5 and combining Figure 3 , the insulating body part 10 of the embodiment of the present application further comprises two recesses 12 and two fixing parts 13 corresponding to the two recesses 12 respectively. Along the first direction X, the two recesses 12 are arranged in a symmetrical manner with respect to the accommodating cavity 101, and along the third direction (as shown in the direction R in Figure 4 , the two recesses 12 are arranged in an alternating and spaced manner with the two third positioning columns 113, and the two fixing parts 13 are arranged in the recesses 12 correspondingly. Exemplarily, the third direction R surrounds the first direction X.

[0055] It can be understood that the number of the recesses 12 and the fixing portions 13 of the embodiments of the present application can include one or more. For the convenience of description, one recess 12 and one corresponding fixing portion 13 are taken as an example for description.

[0056] Specifically, as shown in Figure 5 and Figure 3 , the recess 12 is arranged on the side wall of the accommodating cavity 101, one end 1301 of the fixing portion is connected to the bottom wall 1201 of the corresponding recess 12, and the other end 1302 of the fixing portion has a limiting portion connected with the end of the magnetic steel 2 to limit the outward movement of the magnetic steel 2 relative to the insulating body portion 10 along the first direction X, which does not affect the smooth introduction of the magnetic steel 2 into the accommodating cavity 101, and also plays a fixing role on the magnetic steel 2 to prevent the magnetic steel 2 from falling off from the accommodating cavity 101 of the insulating body portion 10. Exemplarily, the limiting portion of the embodiments of the present application is a hook-shaped undercut boss arranged at the other end 1302 of the fixing portion, and the undercut bosses of the two fixing portions 13 are oppositely arranged along the second direction Y, and the undercut boss abuts against the end of the magnetic steel 2 to limit the outward movement of the magnetic steel 2 relative to the insulating body portion 10 along the first direction X. But not limited to this, the specific structure of the fixing portion 13 of the embodiments of the present application is not limited, as long as it can be clamped with the magnetic steel 2 to prevent it from falling off from the accommodating cavity 101.

[0057] With reference to Figure 2 and in combination with Figure 3 , the insulating body portion 10 of the embodiments of the present application further includes two protrusions 15 corresponding to the two inserts 3. Along the first direction X, the two protrusions 15 are symmetrically arranged relative to the accommodating cavity 101, and along the third direction (as shown in the direction R in Figure 3 , the two protrusions 15 are alternately and spacedly arranged with the two recesses 12, and the two protrusions 15 are injection molded corresponding to the middle part of the two inserts 3.

[0058] It can be understood that the number of the protrusions 15 of the embodiments of the present application can include one or more. For the convenience of description, one protrusion 15 and one corresponding insert 3 are taken as an example for description. Specifically, the protrusion 15 is arranged on the outer wall of the insulating body portion 10 and extends along the first direction Y. Exemplarily, the first end 301 of each insert extends outward beyond the protrusion 15 along the first direction X, and the outer surface of each protrusion 15 is provided with a third positioning column 113 to make the inserts 3 and the magnetic steel 2 accommodated in the accommodating cavity 101 spacedly arranged and insulated along the second direction Y.

[0059] With reference to Figure 5 and in combination with Figure 2 and Figure 1The insulating body part 10 of the embodiment of the present application further comprises a blocking part 14. Specifically, the blocking part 14 is arranged on the outer wall of the insulating body part 10 and extends outwardly along the second direction Y away from the accommodating cavity 101. Exemplarily, the blocking part 14 is three protrusions arranged on the outer wall of the insulating body part 10 at intervals along the third direction R. Along the third direction R, the blocking part 14 is located between the two insertion pieces 3 and abuts against the second ends 302 of the two insertion pieces after being bent, so as to arrange the second ends 302 of the two insertion pieces at intervals along the third direction R, block the contact between the two insertion pieces 3 and prevent the contact of the product main body (for example, the above-mentioned magneto-electric sensor) of the insertion piece 3.

[0060] With reference to the foregoing Figure 2 and Figure 4 The embodiment of the present application further comprises a winding post 20. The winding post 20 extends along the first direction X and is connected to one end of the insulating body part 10 away from the opening 102, and two ends of the winding post 20 are respectively provided with limiting protrusions 21.

[0061] Specifically, the limiting protrusions 21 are arranged on the outer surface of the winding post 20, and along the first direction X, the outer surface of the winding post 20 between the two limiting protrusions 21 is used for winding a coil (not shown in the figure). The coil has an inlet end and an outlet end, and the inlet end and the outlet end are respectively connected to the second ends 302 of the two insertion pieces. Among them, the limiting protrusion close to the insulating body part 10 is provided with an inlet port 211 and an outlet port 212, and the inlet port 211 and the outlet port 212 correspond to the two insertion pieces 3 respectively. Along the third direction R, the inlet port 211 and the outlet port 212 are arranged at intervals to avoid damage to the coil in the subsequent injection molding process.

[0062] Thus, in the process of winding the coil on the winding post 20, the inlet end of the coil is first connected to the second end 302 of one of the insertion pieces, then the outlet end of the coil is wound on the winding post 20 after passing through the inlet port 211, and finally the outlet end of the coil is connected to the second end 302 of the other insertion piece after passing through the outlet port 212. In this way, the winding of the coil of the winding post 20 of the fixing mechanism 1 is realized.

[0063] Exemplarily, as Figure 5 and ​The limiting protrusion 21 away from the insulating body part 10 is used for positioning during injection molding. The limiting protrusion 21 away from the insulating body part 10 and the six positioning parts 11 constitute multi-directional positioning, which has very high stability. Moreover, the limiting protrusion 21 away from the insulating body part 10 comprises a third sealing member 213, which is arranged on the side wall of the limiting protrusion 21 away from the insulating body part 10 and extends along a third direction R. Exemplarily, the third sealing member 213 is a sealing rib, i.e. two layers of sealing rib structures are arranged at intervals on the side wall of the limiting protrusion 21 away from the insulating body part 10 in the embodiment of the present application, which has high melt degree of injection molding material and good sealing performance during injection molding. Thus, the connection firmness and sealing performance of the insulating body part 10 and the injection molding material are enhanced, and the interlayer between the injection molding material and the insulating body part 10 is prevented from being formed, so that the corrosion of the plug-in piece 3 and the magnetic steel 2 by moisture entering from the interlayer is avoided.

[0064] In summary, the fixing mechanism 1 of the embodiment of the present application can simplify the fixing structure of the first component and the second component (e.g. the magnetic steel 2 and the plug-in piece 3) through the multiple positioning parts 11, enhance the fixing effect, avoid the generation of waste products due to insufficient positioning structure and rigidity during subsequent injection molding process, and reduce the cost.

[0065] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood by those skilled in the art that the above content is further detailed description of the present application in combination with specific embodiments, and the specific implementation of the present application cannot be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple deductions or substitutions, without departing from the spirit and scope of the present application.

Claims

1. A fixing mechanism for fixing and positioning a first component and a second component during injection molding, characterized in that, The application relates to an insulating body part, comprising: an insulating body part extending along a first direction, having a receiving cavity for receiving the first component; the insulating body part comprises an opening, the receiving cavity is communicated with the outside through the opening, and the opening is used for allowing the first component to pass through and enter the receiving cavity; a plurality of positioning parts are arranged on the outer wall of the insulating body part, each of the positioning parts extends outward along a second direction away from the receiving cavity, and the plurality of positioning parts are used for positioning during injection molding, and the first direction intersects with the second direction; the insulating body part is also used for injection molding with two second components, the insulating body part wraps the middle part of each of the second components, the two second components are arranged on opposite sides of the receiving cavity along the second direction, and the first end of each of the second components extends outward beyond the insulating body part along the first direction.

2. The securing mechanism of claim 1, wherein, the plurality of positioning parts comprise: a first positioning column; a second positioning column arranged on the side of the first positioning column away from the opening along the first direction; two third positioning columns arranged on opposite sides of the insulating body part along the second direction and used for corresponding to the two second components respectively; a fourth positioning column arranged on the opposite side of the insulating body part from the first positioning column along the second direction.

3. The securing mechanism of claim 2, wherein, the first positioning column and each of the third positioning columns are provided with a positioning hole extending along the second direction, which is used for adapting to external positioning structures to be positioned during injection molding.

4. The securing mechanism of claim 2, wherein, the insulating body part further comprises a first sealing member arranged on the outer wall of the insulating body part, the first sealing member extends around the circumference of the first positioning column and is arranged in a spaced manner with the first positioning column; and / or each of the third positioning columns comprises a second sealing member arranged on the outer wall of the third positioning column and extending along the circumference of the third positioning column.

5. The securing mechanism of claim 2, wherein, the insulating body part further comprises: two recesses arranged on the side wall of the receiving cavity, the two recesses are arranged in a symmetrical manner relative to the receiving cavity along the first direction, and the two recesses are arranged in an alternating and spaced manner with the two third positioning columns along a third direction, and the third direction surrounds the first direction; two fixing parts corresponding to the two recesses respectively, one end of each of the fixing parts is connected to the bottom wall of the corresponding recess, and the other end of each of the fixing parts is provided with a limiting part used for connecting with the first component to limit the outward movement of the first component relative to the insulating body part along the first direction.

6. The securing mechanism of claim 5, wherein, the limiting part comprises a reverse-docking boss, the reverse-docking boss is arranged on the other end of the fixing part, and the reverse-docking bosses of the two fixing parts are arranged in a relative manner along the second direction, and the reverse-docking boss is used for abutting against the end part of the first component to limit the outward movement of the first component relative to the insulating body part along the first direction.

7. The securing mechanism of claim 5, wherein, The insulating body part further comprises two protrusions extending along the first direction and arranged on the side wall of the accommodating cavity, and the two protrusions are arranged alternately and spaced apart along the third direction from the two recesses, and the two protrusions are used for one-to-one injection molding with the middle portions of the two second components, and the first end of each second component extends outward beyond the protrusion along the first direction, and the outer surface of each protrusion is provided with a third positioning column.

8. The securing mechanism of claim 2, wherein, The insulating body part further comprises a blocking portion arranged on the outer wall of the insulating body part and extending outward along the second direction away from the accommodating cavity, and the blocking portion is used for abutting against the second end of the second component after being bent to make the second ends of the two second components arranged spaced apart along the third direction.

9. The securing mechanism of claim 1, wherein, Further comprising a winding column extending along the first direction, and the winding column is connected to one end of the insulating body part away from the opening; The two ends of the winding column are provided with limiting protrusions, and the limiting protrusions are protruded on the outer surface of the winding column along the first direction, and the two limiting protrusions are used for winding a coil therebetween along the first direction, and the coil has an inlet end and an outlet end connected to the second ends of the two second components respectively; The inlet and outlet openings are arranged on the limiting protrusion close to the insulating body part along the third direction, and the inlet opening and the outlet opening are arranged spaced apart along the third direction.

10. The securing mechanism of claim 9, wherein, The limiting protrusion away from the insulating body part comprises a third sealing member arranged on the side wall of the limiting protrusion away from the insulating body part and extending along the third direction.

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