Wire protection device of automobile safety belt sensor diaphragm and injection mold of wire protection device

Abstract

The utility model relates to a wire protection device of an automobile safety belt sensor diaphragm and an injection mold of the wire protection device, and relates to the technical field of automobile machinery, and the wire protection device comprises a first shell, a second shell and a connecting assembly used for connecting the first shell with the second shell. The sensor diaphragm is placed on the first shell, the positioning assembly on the first shell fixes the horizontal position of the sensor diaphragm, and then the first shell and the second shell are connected together through the connecting assembly, so that the first shell and the second shell are matched to wrap and seal the sensor diaphragm. Therefore, the dustproof, waterproof, anti-oxidation, anti-bending and anti-fracture effects on the sensor diaphragm are achieved, and the probability that the lead of the safety belt sensor diaphragm is damaged due to the influence of the external environment and machinery is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of automobile machinery, and in particular to a wire protection device for an automobile seat belt sensor diaphragm and an injection mold thereof. Background Art

[0002] In the safety system of the car, the seat belt sensor diaphragm is a device used to detect whether the passenger has fastened the seat belt in order to trigger the corresponding airbag or alarm system.

[0003] In the related art, reference may be made to the Chinese utility model patent with authorization announcement number CN217969463U, which discloses a diaphragm-type seat belt unfastened reminder device, comprising: a diaphragm-type sensor body, wherein the diaphragm-type sensor body is provided with an upper diaphragm and a lower diaphragm in the thickness direction, an insulating middle layer is provided between the upper diaphragm and the lower diaphragm, and the upper diaphragm and the lower diaphragm each respectively comprise a surface plastic film and an inner conductive layer; a plurality of detection points are provided on the diaphragm-type sensor body, and at the position of each detection point, the space between the upper diaphragm and the lower diaphragm is hollow and no insulating middle layer is provided; wherein, when the upper diaphragm and the lower diaphragm at the detection point are squeezed, their respective inner conductive layers contact each other and conduct the circuit to send a reminder signal outward.

[0004] However, as mentioned above, the diaphragm directly installed in the vehicle seat is easily damaged by external mechanical influences, so it is necessary to design an effective protection device to ensure that the wires of the seat belt sensor diaphragm are not affected by the external environment and mechanical damage. Utility Model Content

[0005] In order to ensure that the wires of the seat belt sensor diaphragm are not affected by the external environment and mechanical damage, the present application provides a wire protection device for the automotive seat belt sensor diaphragm and an injection mold thereof.

[0006] The present application provides a wire protection device for a car seat belt sensor diaphragm and an injection mold thereof, which adopts the following technical solution:

[0007] A wire protection device for a car seat belt sensor diaphragm and an injection mold thereof, comprising a first shell, a second shell and a connecting assembly for connecting the first shell and the second shell, wherein the sensor diaphragm is located between the first shell and the second shell, and a positioning assembly is provided on the first shell, wherein the positioning assembly is used to fix the horizontal position of the sensor diaphragm on the first shell, and when the second shell is closed with the first shell via the connecting assembly, the second shell limits the vertical position of the sensor diaphragm on the first shell.

[0008] By adopting the above technical solution, the sensor diaphragm is placed on the first shell, the positioning component on the first shell fixes the horizontal position of the sensor diaphragm, and then the first shell and the second shell are connected together through the connecting component, so that the first shell and the second shell cooperate to wrap and seal the sensor diaphragm, thereby preventing dust, water, oxidation, bending and fracture of the sensor diaphragm, reducing the probability of the wires of the seat belt sensor diaphragm being damaged by the external environment and mechanical influences.

[0009] Optionally, the connection component includes:

[0010] A connecting column, wherein the connecting column is arranged on the first housing, a threaded hole is radially provided at the end of the connecting column, a connecting hole is provided on the second housing, and the connecting column is plugged and matched with the connecting hole;

[0011] A connecting screw, wherein the thread of the connecting screw is threadedly connected to the threaded hole on the connecting column and the head of the connecting screw is tightly pressed against the outer side wall of the second shell.

[0012] By adopting the above technical solution, after the sensor diaphragm is placed on the first shell, the second shell is moved so that the connecting column on the first shell is inserted into the connecting hole of the second shell, and then the connecting screw is screwed into the threaded hole on the connecting column and the head is pressed against the outer wall of the second shell, thereby completing the connection and fixing work between the first shell and the second shell.

[0013] Optionally, a clearance groove is provided on the outer side wall of the second shell, and the head of the connecting screw is located in the clearance groove.

[0014] By adopting the above technical solution, a recess is provided on the outer wall of the second shell for placing the head of the connecting screw, thereby making the outer wall of the second shell smoother. When a person sits on the seat, the head of the connecting screw will not hit the buttocks of the person and cause discomfort. The head of the connecting screw is also protected, reducing the probability of wear of the head of the connecting screw.

[0015] Optionally, the positioning component includes:

[0016] A positioning post, wherein the positioning post is arranged on the first housing, and a plurality of the positioning posts are arranged, and the plurality of the positioning posts are circumferentially distributed around the sensor diaphragm;

[0017] A positioning ring sleeve is arranged on the second shell. When the first shell and the second shell are connected and closed, the positioning ring sleeve is sleeved on the positioning column.

[0018] By adopting the above technical solution, a plurality of positioning posts are installed on the first shell, and the sensor diaphragm is placed between the positioning posts. The plurality of positioning posts cooperate to fix the position of the sensor diaphragm in the horizontal direction. When the second shell is connected to the first shell, the positioning ring is sleeved onto the positioning posts, thereby completing the positioning of the sensor diaphragm while also improving the connection strength between the first shell and the second shell.

[0019] Optionally, the first shell and the second shell are both made of PA plastic material with a relatively soft texture.

[0020] By adopting the above technical solution, the first shell and the second shell are set to be made of PA plastic material with a relatively soft texture, so that the sensor diaphragm inside the first shell and the second shell is easy to bear the force, so that the first shell and the second shell can protect the sensor diaphragm while maintaining the sensing effect of the sensor diaphragm, and the first shell and the second shell made of PA plastic material with a relatively soft texture are not easy to bend and break, and have good protection performance.

[0021] Optionally, a circular arc-shaped guide surface is provided on the bottom surface of the positioning ring sleeve, and a rubber cushion is provided inside the positioning ring sleeve.

[0022] By adopting the above technical solution, an arc-shaped guide surface is provided on the bottom surface of the positioning ring sleeve, so that when the positioning post is inserted into the positioning ring sleeve, the guide surface will guide the positioning post, making it easier for the positioning post to enter the positioning ring sleeve, thereby improving work efficiency, and a rubber pad is provided in the positioning ring sleeve, thereby reducing the probability of the positioning post being worn due to long-term contact with the inner wall of the second shell, thereby improving the service life.

[0023] The second object of the present application is to provide an injection mold, comprising an upper mold and a lower mold, the upper mold is provided with a pouring gate, the upper mold and the lower mold are respectively provided with an upper mold cavity and a lower mold cavity, the upper mold and the lower mold are respectively provided with an upper mold core and a lower mold core, the upper mold core and the lower mold core are respectively located in the upper mold cavity and the lower mold cavity, the lower mold is provided with a guide pin, the upper mold is provided with a guide pin sleeve, when the guide pin sleeve is fully sleeved on the guide pin, the upper mold and the lower mold are connected and closed.

[0024] By adopting the above technical solution, the upper mold and the lower mold are moved, the guide pin on the lower mold is sleeved with the guide pin sleeve on the upper mold, the upper mold core and the lower mold core are closed, and then the raw material is poured through the pouring gate. After cooling and molding, the injection molded parts of the first shell and the second shell are formed, and then the upper mold and the lower mold are moved away from each other until the mold is opened. The injection molded parts can be taken out, and the injection molding of the first shell and the second shell is completed.

[0025] Optionally, a cooling water channel connected to a cold water source is provided on both the upper mold and the lower mold, and the cooling water channel is spirally distributed around the upper mold core and the lower mold core.

[0026] By adopting the above technical solution, the cooling water channel passes cold water into the upper mold and the lower mold, and the cold water cools the upper mold and the lower mold, thereby cooling the injection molded parts into shape, which greatly improves production efficiency compared to natural cooling.

[0027] In summary, the present application includes at least one of the following beneficial technical effects:

[0028] 1. The sensor diaphragm is placed on the first housing, the positioning assembly on the first housing fixes the horizontal position of the sensor diaphragm, and then the first housing and the second housing are connected together through the connecting assembly, so that the first housing and the second housing cooperate to wrap and seal the sensor diaphragm, thereby preventing dust, water, oxidation, bending and fracture of the sensor diaphragm, and reducing the probability of the wire of the seat belt sensor diaphragm being damaged by the external environment and mechanical influences;

[0029] 2. A plurality of positioning posts are installed on the first housing, and the sensor diaphragm is placed between the positioning posts. The plurality of positioning posts cooperate to fix the position of the sensor diaphragm in the horizontal direction. When the second housing is connected to the first housing, the positioning ring is sleeved on the positioning posts, thereby completing the positioning of the sensor diaphragm and improving the connection strength between the first housing and the second housing;

[0030] 3. By setting the first shell and the second shell to be made of PA plastic material with a relatively soft texture, it is convenient for the sensor diaphragm inside the first shell and the second shell to be subjected to force, so that the first shell and the second shell can protect the sensor diaphragm while maintaining the sensing effect of the sensor diaphragm, and the first shell and the second shell made of PA plastic material with a relatively soft texture are not easy to bend and break, and have good protection performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic diagram of the three-dimensional structure of Example 1 of the present application;

[0032] Figure 2 is a schematic diagram of the structure of the connection assembly in Example 1 of the present application;

[0033] Figure 3 is a schematic diagram of the structure of the positioning component in Example 1 of the present application;

[0034] Figure 4 It is a schematic diagram of the three-dimensional structure of Example 2 of the present application.

[0035] Figure numerals: 11. first shell; 12. second shell; 2. connecting assembly; 21. connecting column; 22. connecting screw; 23. clearance groove; 3. positioning assembly; 31. positioning column; 32. positioning ring sleeve; 33. guide surface; 41. upper mold; 42. lower mold; 43. upper mold core; 44. lower mold core; 45. pouring gate; 46. guide column; 47. guide column sleeve; 48. cooling water channel. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1 -Attached Figure 4 This application is described in further detail.

[0037] The embodiment of the present application discloses a wire protection device for a car seat belt sensor diaphragm and an injection mold thereof.

[0038] Embodiment 1 of the present application discloses a wire protection device for a car seat belt sensor diaphragm. Figure 1 The wire protection device of the automobile seat belt sensor diaphragm includes a first housing 11, a second housing 12 and a connecting component 2 for connecting the first housing 11 and the second housing 12.

[0039] Reference Figure 1 and Figure 2 The first shell 11 and the second shell 12 are both made of PA plastic material with a relatively soft texture. The connecting component 2 includes a connecting column 21 and a connecting screw 22. The connecting column 21 is fixedly connected to the first shell 11, and four connecting columns 21 are provided. The four connecting columns 21 are respectively located at the four corners of the first shell 11. A threaded hole is radially provided at the end of the connecting column 21. A connecting hole that penetrates the thickness of the second shell 12 is provided on the second shell 12, and the connecting column 21 is plugged into the connecting hole. The connecting screw 22 is threadedly connected to the threaded hole of the connecting column 21 and its head is pressed against the second shell 12. A clearance groove 23 for the head of the connecting screw 22 to be placed is provided on the outer wall of the second shell 12.

[0040] Reference Figure 1 and Figure 2 , place the sensor diaphragm on the first shell 11, move the second shell 12 so that the connecting column 21 on the first shell 11 is inserted into the connecting hole of the second shell 12, and then screw the connecting screw 22 to be threadedly connected with the threaded hole on the connecting column 21 and the head is pressed against the outer wall of the second shell 12, so that the first shell 11 and the second shell 12 cooperate to wrap and seal the sensor diaphragm, thereby preventing dust, water, oxidation, bending and fracture of the sensor diaphragm, reducing the probability of the wire of the seat belt sensor diaphragm being damaged by the external environment and mechanical influences.

[0041] Reference Figure 2 and Figure 3 A positioning assembly 3 is provided on the first housing 11, and the positioning assembly 3 is used to fix the horizontal position of the sensor diaphragm on the first housing 11. The positioning assembly 3 includes a positioning column 31 and a positioning ring 32. A plurality of positioning columns 31 are provided, and the plurality of positioning columns 31 are fixedly connected to the first housing 11. The plurality of positioning columns 31 are evenly distributed along the circumference of the sensor diaphragm, and the sensor diaphragm is clamped between the positioning columns 31.

[0042] Reference Figure 2 and Figure 3 The positioning ring 32 is fixedly connected to the second housing 12. When the first housing 11 and the second housing 12 are connected and closed, the positioning ring 32 is sleeved on the positioning column 31. The bottom surface of the positioning ring 32 is provided with an arc-shaped guide surface 33, and the interior of the positioning ring 32 is padded with a rubber cushion. Multiple positioning columns 31 cooperate to fix the position of the sensor diaphragm in the horizontal direction, and the positioning ring 32 is sleeved on the positioning column 31, thereby completing the positioning of the sensor diaphragm and also improving the connection strength between the first housing 11 and the second housing 12.

[0043] The working principle of Example 1 of the present application is:

[0044] The sensor diaphragm is wrapped and sealed by the cooperation of the first shell 11 and the second shell 12, so as to prevent the sensor diaphragm from dust, water, oxidation, bending and fracture, thereby reducing the probability of the wire of the seat belt sensor diaphragm being damaged by the external environment and mechanical influences.

[0045] Example 2 of the present application discloses an injection mold, which is used to produce a wire protection device for a car seat belt sensor diaphragm in Example 1 of the present application, referring to Figure 4 An injection mold includes an upper mold 41 and a lower mold 42. An upper mold cavity and a lower mold cavity are respectively provided on the upper mold 41 and the lower mold 42, and an upper mold core 43 and a lower mold core 44 are fixedly installed on the upper mold 41 and the lower mold 42, respectively. The upper mold core 43 and the lower mold core 44 are located in the upper mold cavity and the lower mold cavity, respectively. A pouring port 45 is provided on the upper mold 41, and the pouring port 45 is connected to the inside of the upper mold core 43. A guide column 46 is fixedly connected to the lower mold 42, and a guide column sleeve 47 is fixedly connected to the upper mold 41. When the guide column sleeve 47 is completely sleeved on the guide column 46, the upper mold 41 and the lower mold 42 are connected and closed. A cooling water channel 48 connected to a cold water source is provided on both the upper mold 41 and the lower mold 42, and the cooling water channel 48 is spirally distributed around the upper mold core 43 and the lower mold core 44.

[0046] The working principle of the embodiment of the present application is as follows:

[0047] Move the upper mold 41 and the lower mold 42, sleeve the guide pin 46 on the lower mold 42 with the guide pin sleeve 47 on the upper mold 41, close the upper mold core 43 and the lower mold core 44, and then pour the raw material through the pouring port 45. After the raw material is poured, cold water is injected through the cooling water channel 48 to cool the raw material and form it. After the raw material is cooled and formed, the injection molded parts of the first shell 11 and the second shell 12 are formed. Then, move the upper mold 41 and the lower mold 42 away from each other until the mold is opened, and the injection molded parts can be taken out, that is, the injection molding of the first shell 11 and the second shell 12 is completed.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A wire protection device for a car seat belt sensor diaphragm, characterized in that: The invention comprises a first housing (11), a second housing (12) and a connecting assembly (2) for connecting the first housing (11) and the second housing (12); a sensor diaphragm is located between the first housing (11) and the second housing (12); a positioning assembly (3) is provided on the first housing (11); the positioning assembly (3) is used to fix the horizontal position of the sensor diaphragm on the first housing (11); when the second housing (12) is closed with the first housing (11) via the connecting assembly (2), the second housing (12) limits the vertical position of the sensor diaphragm on the first housing (11).

2. The wire protection device for a car seat belt sensor diaphragm according to claim 1, characterized in that: The connection component (2) comprises: A connecting column (21), the connecting column (21) being arranged on the first housing (11), a threaded hole being radially provided at an end of the connecting column (21), a connecting hole being provided on the second housing (12), the connecting column (21) being plug-fitted into the connecting hole; A connecting screw (22), wherein the connecting screw (22) is threadedly connected to the threaded hole on the connecting column (21) and the head thereof is tightly pressed against the outer side wall of the second housing (12).

3. The wire protection device for a car seat belt sensor diaphragm according to claim 2, characterized in that: A clearance groove (23) is provided on the outer side wall of the second housing (12), and the head of the connecting screw (22) is located in the clearance groove (23).

4. The wire protection device for a car seat belt sensor diaphragm according to claim 1, characterized in that: The positioning component (3) comprises: A positioning column (31), the positioning column (31) being arranged on the first housing (11), a plurality of the positioning columns (31) being arranged, and the plurality of the positioning columns (31) being circumferentially distributed on a peripheral side of the sensor diaphragm; A positioning ring sleeve (32), wherein the positioning ring sleeve (32) is arranged on the second housing (12); when the first housing (11) and the second housing (12) are connected and closed, the positioning ring sleeve (32) is sleeved on the positioning column (31).

5. The wire protection device for a car seat belt sensor diaphragm according to claim 1, characterized in that: The first shell (11) and the second shell (12) are both made of PA plastic material with a relatively soft texture.

6. The wire protection device for a car seat belt sensor diaphragm according to claim 4, characterized in that: The bottom surface of the positioning ring sleeve (32) is provided with an arc-shaped guide surface (33), and the inner pad of the positioning ring sleeve (32) is provided with a rubber cushion.

7. An injection mold for producing a wire protection device for a car seat belt sensor diaphragm as claimed in claim 1, characterized in that: The invention comprises an upper mold (41) and a lower mold (42), wherein a pouring port (45) is provided on the upper mold (41), an upper mold cavity and a lower mold cavity are provided on the upper mold (41) and the lower mold (42), respectively, an upper mold core (43) and a lower mold core (44) are provided on the upper mold (41) and the lower mold (42), respectively, the upper mold core (43) and the lower mold core (44) are located in the upper mold cavity and the lower mold cavity, respectively, the lower mold (42) is provided with a guide column (46), and the upper mold (41) is provided with a guide column sleeve (47), and when the guide column sleeve (47) is completely sleeved on the guide column (46), the upper mold (41) and the lower mold (42) are connected and closed.

8. An injection mold according to claim 7, characterized in that: The upper mold (41) and the lower mold (42) are both provided with a cooling water channel (48) connected to a cold water source, and the cooling water channel (48) is spirally distributed around the upper mold core (43) and the lower mold core (44).

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