Improved automobile relay

Abstract

The utility model provides an improved automobile relay, which comprises a shell, a substrate, a chip and a cover body, supporting assemblies are respectively arranged at the corners of the periphery of the upper end surface of the shell, and an accommodating space is formed in the area, among the four supporting assemblies, of the upper end surface of the shell; the supporting assemblies are arranged at the corners of the periphery of the shell, when the base plate is installed, the base plate is guided to the position above the containing space in the middle of the shell through the inserting parts in the first guiding parts in the supporting assemblies, a temporary assembly state is formed, and it is guaranteed that the base plate is assembled to the position above the shell at the correct installation position; in the state, the base plate continues to be pressed downwards, in the process that the base plate moves downwards to the horizontal supporting part in the first guiding part, the locking devices (the first clamping head and the second clamping head) are correspondingly matched with the base plate and the cover body, and when the bottom end face of the base plate makes contact with the horizontal supporting part, the locking devices are just correspondingly matched with the base plate and the cover body in place; therefore, the base plate is supported and fixed.

Description

Technical Field

[0001] The utility model relates to the technical field of relay equipment, in particular to an improved automobile relay. Background Art

[0002] A relay is an automatic control device whose output will change abruptly when the input (electricity, magnetism, sound, light, heat) reaches a certain value. An automotive relay is a relay used in automobiles. This type of relay has high load switching power and is highly resistant to impact and vibration.

[0003] According to their working principles, automotive relays are divided into mechanical relays and electronic relays. Generally, electronic relays include a housing, a substrate mounted in the inner cavity of the housing and having semiconductor components for controlling on / off, and an end cap.

[0004] The installation structure of the existing automotive electronic relay is as follows: a support portion is formed at the edge of each corner of the housing, and a fixing protrusion is formed on the inner wall at the edge of each corner. When the substrate is installed, the substrate is placed on the support portion and fixed by the above-mentioned fixing protrusion. However, since the existing automotive electronic relay assembles the substrate in an interference fit manner, during the assembly process, the substrate is prone to crushing the fixing protrusion below or generating burrs due to cutting off a part of the fixing protrusion. If the fixing protrusion is crushed, the supporting and fixing ability of the fixing protrusion to the substrate will be weakened; if the burr generated by the cutting off part of the fixing protrusion exists inside the automotive electronic relay, there is a concern that the electronic relay may malfunction. Summary of the invention

[0005] In view of the defects existing in the prior art, the purpose of the utility model is to provide an improved automotive relay to solve the problem that the substrate in the existing electronic automotive relay is assembled in an interference fit manner, which causes the fixing protrusions under the substrate to be crushed, resulting in weakened supporting and fixing ability, or burrs are generated on the fixing protrusions due to the cutting off of parts.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The present application provides an improved automotive relay, which includes a shell, a substrate, a chip mounted on the substrate and a cover body, wherein support assemblies are respectively arranged at the corners of the upper end surface of the shell, and an area on the upper end surface of the shell located between four groups of the support assemblies forms an accommodation space for accommodating the substrate, each of the support assemblies includes a first guide portion for guiding the assembly of the substrate, a second guide portion for guiding the assembly of the cover body and a locking device for fixing the substrate and the cover body, the first guide portion includes a horizontal support portion arranged horizontally and an insertion portion extending vertically upward from the outside of the horizontal support portion, a notch matched with the second guide portion and a coupling groove extending from the notch to the top of the cover body are arranged at the bottom end of the outer side of the cover body, and the insertion portion matches with the coupling groove.

[0008] Furthermore, one side of the base plate is provided with an anti-misalignment hole which passes through from top to bottom, and the top end surface of the shell is formed with a positioning pin which extends vertically upward and cooperates with the anti-misalignment hole for positioning.

[0009] Furthermore, the locking device includes a first clamp and a second clamp, and the cover body is provided with a first opening on the outer walls on both sides of the opposite sides, which is clamped together with the first clamp, and the substrate end surface is provided with a second opening around it, which is corresponding to the second clamp, and the second opening passes through the upper and lower end surfaces of the substrate, and the height dimension of the second clamp is smaller than the height dimension of the first clamp.

[0010] Furthermore, openings for the first clamp to vertically pass through are respectively provided on the outer edges of the two opposite sides of the substrate.

[0011] Furthermore, the inner side surface of the upper end of the insertion portion is a conical outer structure.

[0012] The beneficial effects of the utility model are:

[0013] By arranging support assemblies at the four corners of the shell, when the substrate is installed, the insertion part in the first guide part of the support assembly is used to guide the substrate to the upper part of the accommodating space in the middle of the shell, forming a temporary assembly state to ensure that the substrate is assembled on the upper part of the shell in the correct installation position; in this state, the substrate continues to be pressed down, and in the process of the substrate moving down to the horizontal support part in the first guide part, the locking device (the first clamp head and the second clamp head) corresponds to the substrate and the cover body, and when the bottom end surface of the substrate contacts the horizontal support part, the locking device just corresponds to the base and the cover body to fit into place, and the two are clamped, thereby supporting and fixing the substrate, and at the same time the horizontal support part can prevent the substrate from continuing to move downward, so as to remind the installer that the substrate is installed in place, and to avoid the substrate continuing to be pressed down and causing damage to other components in the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the improved automobile relay in the embodiment of the present application.

[0015] Figure 2 It is a schematic diagram of the three-dimensional structure of the cover body in the improved automobile relay according to the embodiment of the present application.

[0016] Figure 3 This is a schematic diagram of the three-dimensional structure from the bottom viewing direction of the cover body in the improved automobile relay in the embodiment of the present application.

[0017] Figure 4 It is a schematic diagram of the installation and assembly structure between the substrate and the shell in the embodiment of the present application.

[0018] Figure 5 It is a schematic diagram of the installation and assembly decomposition structure between the substrate and the shell in the embodiment of the present application.

[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the substrate in the embodiment of the present application.

[0020] Figure 7 for Figure 3 Schematic diagram of the local enlarged structure at A in the figure.

[0021] Figure 8 for Figure 4 Schematic diagram of the local enlarged structure at point B in the figure.

[0022] Fig. 9 for Figure 5 Schematic diagram of the local enlarged structure at point C in the figure.

[0023] In the figure:

[0024] 100-automotive relay, 10-cover, 11-notch, 12-first opening, 13-combination groove, 20-housing, 21-pin, 22-support assembly, 221-second guide portion, 222-first guide portion, 2221-horizontal support portion, 2222-insertion portion, 23-locating pin, 30-substrate, 31-second opening, 32-opening, 33-anti-mistake hole, 40-chip, 50-locking device, 51-first clamp, 52-second clamp. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0026] See attached Figure 1 , Attachment Figure 4 And attached Figure 5As shown, this embodiment provides an improved automotive relay 100, which includes a housing 20, a substrate 30, a chip 40 mounted on the substrate 30, and a cover 10. The cover 10 cooperates with the housing 20, and the substrate 30 is installed in a closed space surrounded by the housing 20 and the cover 10.

[0027] See attached Figure 1 To Attachment Figure 3 As shown, the cover body 10 includes a square frame structure, and notches 11 are formed at the corners of the four sides of the cover body 10, and a coupling groove 13 is formed at each notch 11 (see the attached Figure 7 As shown in FIG. 1 , the coupling groove 13 extends from the notch 11 toward the top of the cover body 10 by a distance.

[0028] See attached Figure 1 , Attachment Figure 4 , Attachment Figure 5 And attached Fig. 9 As shown, support assemblies 22 are respectively arranged at the corners of the upper end surface of the shell 20, and each support assembly 22 includes a first guide portion 222 for guiding the assembly of the substrate 30, a second guide portion 221 for guiding the assembly of the cover body 10, and a locking device 50 for fixing the substrate 30 and the cover body 10.

[0029] The first guide portion 222 includes a horizontal support portion 2221 arranged horizontally and an insertion portion 2222 extending vertically upward by an end distance from the outer side of the horizontal support portion 2221. When the cover body 10 is assembled with the shell 20, the insertion portion 2222 at the corners of the top surface of the shell 20 is correspondingly inserted into the coupling groove 13 at the corners of the cover body 10 to achieve the engagement between the shell 20 and the cover body 10. At the same time, the inner side surface of the upper end of the insertion portion 2222 can adopt a conical shape structure with a thickness gradually becoming thinner toward the top end, so that the upper end of the insertion portion 2222 has a good elastic deformation ability. In this way, when the substrate 30 enters the lower horizontal support portion 2221 through the insertion portion 2222, as the substrate 30 contacts the insertion portion 2222, the substrate 30 will first contact the top end of the insertion portion 2222, forming an outward squeezing force on the insertion portion 2222. After the top end of the insertion portion 2222 is compressed and deformed, it extends outward, so that the substrate 30 can smoothly slide down along the inner wall of the insertion portion 2222 to the lower horizontal support portion 2221.

[0030] See attached Figure 8 As shown, in addition, the horizontal support portion 2221 can prevent the substrate 30 from moving further downward, so as to remind the installer that the substrate 30 is installed in place, and prevent the substrate 30 from being pressed down further and causing damage to other components in the housing 20.

[0031] Continue to refer to the attached Figure 1 , Attachment Figure 2And attached Fig. 9 As shown, in order to facilitate the combined installation between the shell body 20 and the cover body 10, the second guide portion 221 is formed as a raised structure extending upward from the top surface of the shell body 20 and matching the shape of the notch 11 at the bottom end of the cover body 10, and the second guide portion 221 is arranged on the outside of the first guide portion 222. In this way, when the shell body 20 and the cover body 10 are combined and installed, during the process of the second guide portion 221 being inserted into the notch 11 of the cover body 10, the insertion portion 2222 in the first guide portion 222 correspondingly enters the coupling groove 13 above the notch 11.

[0032] See attached Figure 4 and attached Figure 5 As shown, a receiving space for installing the substrate 30 is formed in the middle area of ​​the upper end surface of the shell 20, and a pin 21 is formed at the position of the bottom end surface of the shell 20 facing the receiving space, so that after the substrate 30 is installed in the receiving space on the shell 20, the substrate 30 is electrically contacted with the pin 21 at the bottom end surface of the shell 20.

[0033] See attached Figure 4 and attached Figure 5 As shown, after the substrate 30 is installed in place on the upper end surface of the shell 20, it needs to be locked by the locking device 50 to fix the installation position of the substrate 30 on the upper end surface of the shell 20. At the same time, after the subsequent cover body 10 is installed in place on the shell 20, it also needs to be locked and fixed by the locking device 50 to achieve the fixation of the cover body 10 on the shell 20.

[0034] Continue to refer to the attached Figure 2 , Attachment Figure 4 , Attachment Figure 5 And attached Figure 6 As shown, specifically, the locking device 50 in this embodiment includes a first clamp 51 and a second clamp 52. Correspondingly, the outer walls on opposite sides of the cover body 10 are provided with first openings 12 that are clamped and matched with the first clamp 51, and the end surface of the base plate 30 is provided with second openings 31 that are clamped and matched with the second clamp 52. The second opening 31 runs through the upper and lower end surfaces of the base plate 30, and the height dimension of the second clamp 52 is smaller than the height dimension of the first clamp 51. In addition, in order to facilitate the installation and arrangement of the second clamp 52 on the housing 20, the base plate 30 is formed with openings 32 on its opposite sides for the first clamp 51 to vertically pass through.

[0035] See attached Figure 5 and attached Figure 6 As shown, in order to prevent the base plate 30 from being assembled incorrectly during installation, an anti-error hole 33 is provided on one side of the base plate 30 and a positioning pin 23 is formed on the top surface of the shell 20 to extend vertically upward and cooperate with the anti-error hole 33 for positioning.

[0036] In order to better understand the improved automotive relay in this embodiment, the installation process is briefly described below:

[0037] During installation, the installation between the substrate 30 and the shell 20 must be completed first. The installation process of the substrate 30 between the shell 20 is as follows: in the process of the substrate 30 entering the horizontal support portion 2221 below through the insertion portion 2222 in the first guide portion 222, as the substrate 30 contacts the insertion portion 2222, the substrate 30 will first contact the top end of the insertion portion 2222, forming an outward squeezing force on the insertion portion 2222, and the top end of the insertion portion 2222 is deformed by pressure and extends outward to form a temporary assembly state, so as to ensure that the substrate 30 is assembled onto the shell 20 in the correct installation position; in this state, the substrate 30 is continued to be pressed down, and when the substrate 30 moves down to the first During the process of being positioned at the horizontal support portion 2221 in the guide portion 222, the first clamp 51 on the shell 20 vertically passes through the opening 32 on the substrate 30, and the second clamp 52 is correspondingly clamped into the second opening 31 on the substrate 30, and after the substrate 30 is installed in place on the horizontal support portion 2221, the second clamp 52 is just clamped on the second opening 31 to achieve locking and fixing of the substrate 30, and at the same time, the bottom end of the substrate 30 is electrically contacted with the pin 21 on the shell 20; after the substrate 30 is installed in place, the cover body 10 is assembled to the shell 20 and the first clamp 51 is clamped and matched with the first opening 12 on the cover body 10 to complete the installation of the cover body 10 and the shell 20.

[0038] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include these modifications and variations.

Claims

1. An improved automotive relay, comprising a housing, a substrate, a chip mounted on the substrate, and a cover, characterized in that: Support components are respectively arranged at the corners of the upper end surface of the shell, and an accommodating space for accommodating the substrate is formed in the area between the four groups of the support components on the upper end surface of the shell, each of the support components includes a first guide portion for guiding the assembly of the substrate, a second guide portion for guiding the assembly of the cover body, and a locking device for fixing the substrate and the cover body, the first guide portion includes a horizontal support portion arranged horizontally and an insertion portion extending vertically upward from the outside of the horizontal support portion, a notch matched with the second guide portion and a coupling groove extending from the notch to the top of the cover body are arranged at the bottom end of the outer side around the cover body, and the insertion portion matches with the coupling groove.

2. An improved automotive relay according to claim 1, characterized in that: One side of the base plate is provided with an anti-mistake hole which penetrates vertically, and the top surface of the shell is formed with a positioning pin which extends vertically upward and matches with the anti-mistake hole for positioning.

3. An improved automotive relay according to claim 1 or 2, characterized in that: The locking device includes a first clamp and a second clamp. The cover body is provided with first openings on the outer walls on opposite sides thereof, which are clamped together with the first clamp. The substrate end surface is provided with second openings corresponding to the second clamp, which are clamped together with the second clamp. The second openings pass through the upper and lower end surfaces of the substrate, and the height dimension of the second clamp is smaller than the height dimension of the first clamp.

4. An improved automotive relay according to claim 3, characterized in that: The outer edges of the two opposite sides of the base plate are respectively provided with openings for the first clamp to vertically pass through.

5. An improved automotive relay according to claim 1, characterized in that: The inner side surface of the upper end of the insertion portion is a conical outer structure.

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