Connecting rod subassembly

Abstract

The utility model discloses a connecting rod sub-assembly which comprises a connecting rod, a connecting rod sleeve, a mounting notch, a sunken groove, a built-in circuit board, a conductive contact piece, a first wire, a control chip, a resistor, a power supply, a conductive sliding block, a second wire and a contact stress piece. The utility model has the following advantages and effects: feedback output is realized by changing the state of the enabling pin of the control chip, and the control chip is intercommunicated with the electronic controller ECU.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts and accessories, in particular to a connecting rod sub-assembly. Background Art

[0002] In the production and assembly process of automotive parts and accessories, built-in solenoid valve shock absorbers are needed; built-in solenoid valve shock absorbers are a new type of intelligent independent suspension system that uses electromagnetic reaction. It uses multiple sensors to detect road conditions and various driving conditions, and transmits them to the electronic controller ECU to control the electromagnetic shock absorber to respond instantly, suppress vibration, and maintain vehicle body stability. Especially when the vehicle speed is very high and suddenly encounters obstacles, its advantages are more evident.

[0003] The built-in solenoid valve shock absorber needs to be connected to the connecting rod sub-assembly to work. The existing connecting rod sub-assembly lacks an internal feedback structure after connecting with the built-in solenoid valve shock absorber, and the electronic controller ECU cannot obtain the connection status between the two in real time. Utility Model Content

[0004] The purpose of the utility model is to provide a connecting rod sub-assembly to solve the problems raised in the background technology.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] A connecting rod sub-assembly comprises a connecting rod and a connecting rod sleeve connected to the right end of the connecting rod; the right side of the connecting rod sleeve has an installation notch, the right side of the installation notch is open, and the left inner wall has an indentation groove; a built-in circuit board is fixedly arranged in the indentation groove, a conductive contact piece is fixedly arranged on the right side of the built-in circuit board, a first wire electrically connected to the conductive contact piece is welded on the built-in circuit board, the first wire is led out of the connecting rod sleeve and connected to an enable pin of a control chip, a resistor is connected to the first wire, and the other end of the resistor is connected to a 5V, 3V or 3.3V power supply;

[0007] A conductive slider is slidably arranged in the recessed groove, a second wire is welded on the conductive slider, the second wire is led out of the connecting rod sleeve and connected to the ground wire; the upper and lower ends of the conductive slider are respectively in contact with the upper and lower inner walls of the mounting slot to stably slide laterally, a contact force-bearing piece is fixedly arranged on the right side of the conductive slider, the contact force-bearing piece will extend rightward out of the recessed groove under normal conditions, the contact force-bearing piece can be forced to move leftward until the conductive slider is connected to the conductive contact piece, and the enable pin of the control chip will be grounded; feedback output is achieved by changing the state of the enable pin of the control chip.

[0008] A further configuration is that an inner spring is squeezed between the built-in circuit board and the conductive slider, and based on the elastic force of the inner spring, the conductive slider has a tendency to move away from the built-in circuit board, and the conductive slider does not contact the conductive contact piece under normal conditions.

[0009] A further configuration is that a first square concave surface is opened at the central position on the right side of the built-in circuit board, a second square concave surface is opened at the central position on the left side of the conductive slider, and the left and right ends of the inner spring are respectively connected to the first square concave surface and the second square concave surface.

[0010] A further configuration is that the conductive contact piece is composed of two conductive metal blocks, the two conductive metal blocks are separated above and below the first square concave surface, and there is a gap between the two conductive metal blocks and the first square concave surface to ensure separation from the inner spring.

[0011] A further configuration is that the cross-sectional shapes of the two conductive metal blocks are both semicircular, and the left side of the conductive sliding block is provided with two arc-shaped surfaces which can contact the two conductive metal blocks respectively.

[0012] A further configuration is that: the upper and lower ends of the right side of the sunken groove are both fixed with embedded blocks by screws, and the upper and lower ends of the right side of the conductive slider are both provided with embedded notches, and the embedded block can extend into the embedded notch and then abut against the conductive slider to prevent the conductive slider from falling out of the sunken groove.

[0013] A further configuration is that the contact force-bearing member is composed of two contact protrusions with a semicircular cross-section shape, the two contact protrusions are arranged at intervals, and the outer peripheries of the two contact protrusions are both provided with a rubber buffer layer.

[0014] A further configuration is that a vertically penetrating wire hole is provided at the upper end of the connecting rod sleeve, a wire passing notch is provided on the right side of the upper end of the built-in circuit board, and the wire passing hole is located directly above the wire passing notch to prevent the upper end of the conductive slider from deviating into the wire passing hole.

[0015] The beneficial effects of the utility model are:

[0016] 1. In the utility model, the enable pin of the control chip is connected to the power supply through a resistor, and the enable pin of the control chip is pulled up and detected as a high-level state; when the connecting rod sleeve is connected to the built-in solenoid valve shock absorber, the contact force-bearing member will be pushed to the left until the conductive slider is connected to the conductive contact member. At this time, the enable pin of the control chip will be grounded and detected as a low-level state; thus, feedback output is achieved by changing the high and low level states of the enable pin of the control chip.

[0017] 2. In the present invention, the inner spring provides elastic force for the conductive slider to keep away from the built-in circuit board, thereby ensuring that the conductive slider does not contact the conductive contact piece under normal conditions.

[0018] 3. In the present invention, the first square concave surface and the second square concave surface are provided to limit the inner spring.

[0019] 4. In the utility model, the conductive contact piece is composed of two conductive metal blocks, which can improve the stability of the contact, and the conductive metal blocks have hardness and can extend the service life; there is a gap between the two conductive metal blocks and the first square concave surface to ensure separation from the inner spring, thereby avoiding the inner spring from conducting electricity and detecting an erroneous low level.

[0020] 5. In the present invention, the cross-sectional shape of the conductive metal block is semicircular, and the arc surface on the conductive slider is extended through arc contact to improve the conductive stability.

[0021] 6. In the present invention, the embedded stopper can abut against the conductive slider to prevent the conductive slider from falling out of the recessed groove.

[0022] 7. In the present invention, the contact force-bearing member is composed of two contact protrusions, which can improve the stability of the contact, and the rubber buffer layer can play a buffering role to avoid direct rigid collision.

[0023] 8. In the present invention, the wire-passing notch is provided for welding of the first wire, and the wire-passing hole is provided for passing the first wire and the second wire; the wire-passing hole is located directly above the wire-passing notch, which can prevent the upper end of the conductive slider from deviating into the wire-passing hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of an embodiment;

[0025] Figure 2 It is a partial structural schematic diagram of an embodiment;

[0026] Figure 3 for Figure 2 Enlarged view of part A in the middle.

[0027] In the figure: 11, connecting rod; 12, connecting rod sleeve; 121, installation notch; 21, recessed groove; 31, built-in circuit board; 32, conductive metal block; 33, arc surface; 41, first wire; 42, control chip; 43, resistor; 44, power supply; 51, conductive slider; 52, contact bump; 53, rubber buffer layer; 61, second wire; 62, ground wire; 71, inner spring; 721, first square concave surface; 722, second square concave surface; 81, screw; 82, embedded block; 83, embedded notch; 91, wire hole; 92, wire notch. DETAILED DESCRIPTION

[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] As attached Figures 1 to 3 As shown;

[0030] This embodiment discloses a connecting rod sub-assembly, including a connecting rod 11 and a connecting rod sleeve 12 connected to the right end of the connecting rod 11;

[0031] The right side of the connecting rod sleeve 12 has a mounting notch 121, the right side of the mounting notch 121 is open, and a recessed groove 21 is provided on the left inner wall; a built-in circuit board 31 is fixedly provided in the recessed groove 21, a conductive contact is fixedly provided on the right side of the built-in circuit board 31, a first wire 41 electrically connected to the conductive contact is welded on the built-in circuit board 31, the first wire 41 is led out of the connecting rod sleeve 12 and connected to the enable pin of the control chip 42, a resistor 43 is connected to the first wire 41, and the other end of the resistor 43 is connected to a 5V or 3V or 3.3V power supply 44;

[0032] It should be noted that, in this embodiment, the control chip 42 adopts STM8, the power supply 44 corresponds to 3V, and the resistance value of the resistor 43 is 10k ohms.

[0033] A conductive slider 51 is slidably arranged in the recessed groove 21, and a second wire 61 is welded on the conductive slider 51. The second wire 61 is led out to the outside of the connecting rod sleeve 12 and connected to the ground wire 62; the upper and lower ends of the conductive slider 51 are respectively abutted against the upper and lower inner walls of the mounting slot 121 for stable lateral sliding, and a contact force-bearing piece is fixedly arranged on the right side of the conductive slider 51. Under normal conditions, the contact force-bearing piece will extend rightward out of the recessed groove 21, and the contact force-bearing piece can be forced to move leftward until the conductive slider 51 is connected to the conductive contact piece, and the enable pin of the control chip 42 will be grounded, and feedback output is achieved by changing the state of the enable pin of the control chip 42.

[0034] An inner spring 71 is squeezed between the built-in circuit board 31 and the conductive slider 51 . Due to the elastic force of the inner spring 71 , the conductive slider 51 tends to move away from the built-in circuit board 31 . The conductive slider 51 does not contact the conductive contact member under normal conditions.

[0035] A first square concave surface 721 is provided at the central position on the right side of the built-in circuit board 31 , a second square concave surface 722 is provided at the central position on the left side of the conductive slider 51 , and the left and right ends of the inner spring 71 are connected to the first square concave surface 721 and the second square concave surface 722 respectively.

[0036] The conductive contact piece is composed of two conductive metal blocks 32 , which are separated above and below the first square concave surface 721 . There is a gap between the two conductive metal blocks 32 and the first square concave surface 721 to ensure separation from the inner spring 71 .

[0037] It should be noted that the two conductive metal blocks 32 are both made of copper; the conductive slider 51 is also made of copper.

[0038] The cross-sectional shapes of the two conductive metal blocks 32 are both semicircular, and the left side of the conductive sliding block 51 is provided with two arc-shaped surfaces 33 which can contact the two conductive metal blocks 32 respectively.

[0039] Among them, the upper and lower ends of the right side of the recessed groove 21 are fixed with embedded blocks 82 by screws 81, and the upper and lower ends of the right side of the conductive slider 51 are provided with embedded notches 83. The embedded block 82 can extend into the embedded notch 83 and then abut against the conductive slider 51 to prevent the conductive slider 51 from falling out of the recessed groove 21.

[0040] The contact force-bearing member is composed of two contact protrusions 52 with a semicircular cross-section. The two contact protrusions 52 are arranged at an interval, and a rubber buffer layer 53 is arranged on the outer periphery of the two contact protrusions 52 .

[0041] Among them, a vertically penetrating wire hole 91 is opened at the upper end of the connecting rod sleeve 12, and a wire passing notch 92 is opened on the right side of the upper end of the built-in circuit board 31. The wire passing hole 91 is located directly above the wire passing notch 92 to prevent the upper end of the conductive slider 51 from deviating into the wire passing hole 91.

[0042] The working principle of this embodiment is:

[0043] ① Under normal conditions, the conductive slider 51 will move to the right under the push of the inner spring 71 until it abuts against the embedded block 82. At this time, the right end of the conductive slider 51 is flush with the notch of the inner recessed groove 21, and the two contact protrusions 52 extend to the right out of the inner recessed groove 21; the enable pin of the control chip 42 is connected to the power supply 44 through the connecting resistor 43, and the enable pin of the control chip 42 is pulled high and detected as a high-level state; the control chip 42 feeds back the high-level state to the electronic controller ECU.

[0044] ② When the connecting rod sleeve 12 is connected to the built-in solenoid valve shock absorber, the two contact protrusions 52 will be pushed to the left until the conductive slider 51 is connected to the two conductive metal blocks 32. At this time, the two conductive metal blocks 32 are connected to the ground wire 62, and the enable pin of the control chip 42 is grounded and detected as a low-level state; the control chip 42 feeds back the low-level state to the electronic controller ECU.

[0045] ③ Thus, feedback output is achieved by changing the high and low level states of the enable pin of the control chip 42.

[0046] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A connecting rod subassembly, comprising a connecting rod (11) and a connecting rod sleeve (12) connected to the right end of the connecting rod (11); characterized in that: The right side of the connecting rod sleeve (12) is provided with a mounting notch (121); the right side of the mounting notch (121) is open, and a recessed groove (21) is provided on the left inner wall; a built-in circuit board (31) is fixedly provided in the recessed groove (21); a conductive contact piece is fixedly provided on the right side of the built-in circuit board (31); a first wire (41) electrically connected to the conductive contact piece is welded on the built-in circuit board (31); the first wire (41) is led out of the connecting rod sleeve (12) and connected to an enable pin of a control chip (42); a resistor (43) is connected to the first wire (41); the other end of the resistor (43) is connected to a 5V, 3V or 3.3V power supply (44); A conductive slider (51) is slidably arranged in the recessed groove (21), a second wire (61) is welded on the conductive slider (51), the second wire (61) is led out of the connecting rod sleeve (12) and connected to the ground wire (62); the upper and lower ends of the conductive slider (51) are respectively in contact with the upper and lower inner walls of the mounting slot (121) to stably slide laterally, a contact force-bearing piece is fixedly arranged on the right side of the conductive slider (51), the contact force-bearing piece will extend rightward out of the recessed groove (21) under normal conditions, and the contact force-bearing piece can be forced to move leftward until the conductive slider (51) is connected to the conductive contact piece, and the enable pin of the control chip (42) is grounded; feedback output is achieved by changing the state of the enable pin of the control chip (42).

2. A connecting rod sub-assembly according to claim 1, characterized in that: An inner spring (71) is squeezed between the built-in circuit board (31) and the conductive slider (51), and due to the elastic force of the inner spring (71), the conductive slider (51) tends to move away from the built-in circuit board (31), and the conductive slider (51) does not contact the conductive contact piece under normal conditions.

3. A connecting rod sub-assembly according to claim 2, characterized in that: A first square concave surface (721) is provided at the central position on the right side of the built-in circuit board (31), a second square concave surface (722) is provided at the central position on the left side of the conductive slider (51), and the left and right ends of the inner spring (71) are respectively connected to the first square concave surface (721) and the second square concave surface (722).

4. A connecting rod sub-assembly according to claim 3, characterized in that: The conductive contact piece is composed of two conductive metal blocks (32), and the two conductive metal blocks (32) are separated above and below the first square concave surface (721). There is a gap between the two conductive metal blocks (32) and the first square concave surface (721) to ensure separation from the inner spring (71).

5. A connecting rod sub-assembly according to claim 4, characterized in that: The cross-sectional shapes of the two conductive metal blocks (32) are both semicircular, and the left side of the conductive sliding block (51) is provided with two arc-shaped surfaces (33) capable of respectively contacting the two conductive metal blocks (32).

6. A connecting rod sub-assembly according to claim 1, characterized in that: The upper and lower ends of the right side of the sunken groove (21) are fixed with embedded blocks (82) by screws (81), and the upper and lower ends of the right side of the conductive slider (51) are provided with embedded notches (83). The embedded block (82) can extend into the embedded notch (83) and then abut against the conductive slider (51) to prevent the conductive slider (51) from falling out of the sunken groove (21).

7. The connecting rod sub-assembly according to claim 1, characterized in that: The contact force-bearing member is composed of two contact protrusions (52) with a semicircular cross-section shape. The two contact protrusions (52) are arranged at intervals, and the outer peripheries of the two contact protrusions (52) are both provided with a rubber buffer layer (53).

8. The connecting rod sub-assembly according to claim 1, characterized in that: A vertically penetrating wire hole (91) is provided at the upper end of the connecting rod sleeve (12), a wire passing notch (92) is provided on the right side of the upper end of the built-in circuit board (31), and the wire passing hole (91) is located directly above the wire passing notch (92) to prevent the upper end of the conductive slider (51) from deviating into the wire passing hole (91).

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