A decoupling device with integrated displacement sensor

Abstract

The present invention discloses a decoupling device integrated with a displacement sensor, including a pedal simulation mechanism and a displacement sensor assembly. The pedal simulation mechanism includes a multi-stage elastic assembly, an input push rod assembly, a housing, a fixing ring, and a sheath. The displacement sensor assembly includes a housing, an external mounting frame, a PCB circuit board, a PCB circuit board, and an induction steel ring. The input push rod assembly includes an input push rod and a first elastic member. The multi-stage elastic assembly includes a guide rod, a spring support seat, a third elastic member, a bearing seat, and a second elastic member. Its technical solution enables a total of three elastic members to gradually provide feedback force during the driver's stepping on the pedal, and the feedback force increases step by step, so that the braking feeling simulated by the pedal is more real and reliable, the force transmission is more stable, the displacement difference detection effect is better, and the integration of each component is higher, which greatly reduces the space layout and the number of parts, making the space layout more compact.

Description

Technical Field

[0001] The present invention relates to the technical field of in-vehicle pedals and brake systems, and in particular to a decoupling device integrated with a displacement sensor. Background Art

[0002] There are currently two types of designs for the pedal and brake systems of automobiles, one is a non-decoupling type and the other is a decoupling type.

[0003] Among them, the characteristic of the non-decoupled design is that the input push rod and the output push rod of the booster are in a linked state under any working condition. The realization of the boost is similar to that of the traditional vacuum booster. The boost size is adjusted by sensing the signal of the differential displacement sensor to adjust the output torque of the motor booster.

[0004] The decoupled design is characterized by the pedal feel being realized by a series spring load, and the input push rod and the output push rod are separated during normal braking. The power assist is adjusted based on the signal from the input push rod travel sensor to adjust the output torque of the motor power assist.

[0005] However, both of the above have technical problems:

[0006] For non-decoupled designs, since the input push rod is linked to the output push rod, the pedal will sink automatically when the power is actively assisted, which will cause the driver to feel the foot is pressed or even pinch the foot, causing comfort problems and even safety problems. At the same time, when recovering energy, it needs to be used in conjunction with the specially designed ESC to achieve 0.3g of energy recovery.

[0007] For the decoupled design, the two-stage series spring load cannot fully simulate the pedal feel, resulting in poor pedal feel authenticity. At the same time, the series spring will reduce the efficiency of the braking force, especially when the power fails, the output pressure is difficult to meet the regulatory requirements, and the matching has certain limitations.

[0008] Meanwhile, in the existing decoupling devices, the displacement sensor is usually separated from the main body of the decoupling device and is an external mechanism. Such a split design not only increases the cost, but also makes the overall product not compact enough. Summary of the invention

[0009] In view of the above problems existing in the prior art, a decoupling device integrated with a displacement sensor is provided, which is designed to make the braking feel of the pedal simulation more realistic and reliable, the force transmission more stable, and the integration of various components higher so that the spatial layout is more compact, so as to overcome the above technical defects.

[0010] The specific technical solutions are as follows:

[0011] A decoupling device integrated with a displacement sensor comprises a pedal simulation mechanism and a displacement sensor assembly, wherein the pedal simulation mechanism comprises a multi-stage elastic assembly and an input push rod assembly which are arranged front and rear relative to each other; the multi-stage elastic assembly comprises a guide rod, wherein a spring support seat, a third elastic member and a bearing seat are sequentially mounted on the outer circumference of the guide rod from rear to front, and a second elastic member is further mounted between the spring support seat and the bearing seat, wherein at least one of the spring support seat and the bearing seat can move forward and backward relative to the guide rod; the input push rod assembly comprises an input push rod and a first elastic member mounted on the outer circumference of the input push rod, wherein the rear end of the input push rod is used to connect to an external pedal and the front end is arranged relative to the rear end of the guide rod, and the two ends of the first elastic member act on the multi-stage elastic assembly and the input push rod respectively to form a preload between the input push rod and the multi-stage elastic member;

[0012] The pedal simulation mechanism also includes a shell, a sheath and a fixing ring. The shell is in the shape of a cylinder with an open front end, and a mounting through hole is provided on the rear end surface for passing the input push rod. The shell is fixed to the outer periphery of the input push rod to allow the shell to move synchronously with the input push rod. The fixing ring is sleeved on the outer periphery of the shell and allows the shell to move forward and backward relative to the fixing ring. The sheath is in the shape of a cylinder with an open front end surface and is sleeved on the outer periphery of the fixing ring. The front end of the sheath has a through hole for passing the input push rod, and the shell is accommodated inside the sheath.

[0013] The displacement sensor assembly includes a shell, an external mounting frame, a PCB circuit board, a PCB circuit board and a sensing steel ring; a connector with a PIN pin is installed on the shell to electrically connect the driving mechanism of the decoupling device; the PCB circuit board and the flexible circuit board are both fixed on the external mounting frame, and the PIN pin of the connector is connected to the PCB circuit board; the sensing steel ring and the external mounting frame are respectively installed on the fixing ring and the outer shell, and the flexible circuit board is used to detect the displacement difference of the sensing steel ring on the preset active path.

[0014] Preferably, the periphery of the input push rod is also covered with adjacently arranged front dust covers and rear dust covers, and the two ends of the first elastic member are respectively against the front dust cover and the spring support seat, and the front dust cover and the rear dust cover are respectively tightly attached to the front and rear sides of the mounting through hole and clamp the shell.

[0015] Preferably, a shaft hole is formed at the rear end of the guide rod, and at least a portion of the front end of the input push rod extends into the shaft hole.

[0016] Preferably, the spring support seat is fixedly mounted on the outer periphery of the guide rod, and the bearing seat is movably sleeved on the outer periphery of the guide rod and can move forward and backward along the outer periphery of the guide rod.

[0017] Preferably, the first elastic component is a conical coil spring, the second elastic component is a cylindrical coil spring, and the third elastic component is a shock-absorbing spring block.

[0018] Preferably, there is a gap between the third elastic member and the bearing seat, the outer periphery of the guide rod is formed with a step for limiting the front end of the third elastic member, and the rear end of the third elastic member is limited by the front side of the spring support seat.

[0019] Preferably, the rear end surface of the bearing seat is also recessed forward to form an annular mounting groove, and a bearing is embedded in the annular mounting groove, the inner ring of the bearing is fitted with the inner edge of the annular mounting groove, and the outer ring of the bearing can rotate freely.

[0020] Preferably, the external mounting frame is in an "L" shape as a whole, including a transverse portion and a longitudinal portion.

[0021] Preferably, a first mounting groove for embedding a PCB line board is opened on the transverse part, and the longitudinal part is a long strip-shaped tile-like structure. The edges of the two longer sides are covered with metal bushings, and the metal bushings and the longitudinal part together form a second mounting groove for embedding a flexible circuit board.

[0022] Preferably, the flexible circuit board is in the shape of an elongated strip as a whole, and the induction steel ring is in the shape of an arc strip as a whole.

[0023] The beneficial effects of the above technical solution are:

[0024] The decoupling device integrated with the displacement sensor includes a pedal simulation mechanism and a displacement sensor assembly. The pedal simulation mechanism includes a multi-stage elastic assembly, an input push rod assembly, a shell, a fixing ring, and a sheath. The displacement sensor assembly includes a shell, an external mounting frame, a PCB circuit board, a PCB circuit board, and a sensing steel ring. The input push rod assembly includes an input push rod and a first elastic component. The multi-stage elastic component includes a guide rod, a spring support seat, a third elastic component, a bearing seat, and a second elastic component. When the driver steps on the pedal, a total of three elastic components gradually provide feedback force, and the feedback force increases step by step, so that the braking feel simulated by the pedal is more real and reliable, and the force transmission is smoother. The displacement sensor assembly can achieve the purpose of displacement difference detection by moving the sensing steel ring relative to the flexible circuit board. The setting of the external mounting frame makes the installation of the flexible circuit board and the PCB circuit board more convenient, the detection effect is better, and the integration of each component is higher, which greatly reduces the space layout and the number of parts, making the space layout more compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional diagram of a decoupling device integrated with a displacement sensor according to the present invention;

[0026] Figure 2 A cross-sectional view of a decoupling device integrated with a displacement sensor according to the present invention;

[0027] Figure 3 A three-dimensional diagram of a pedal simulation mechanism in a decoupling device integrated with a displacement sensor according to the present invention;

[0028] Figure 4 It is a cross-sectional view of a pedal simulation mechanism in a decoupling device integrated with a displacement sensor of the present invention;

[0029] Figure 5 It is a schematic diagram of the split state of the pedal simulation mechanism in the decoupling device integrated with the displacement sensor of the present invention;

[0030] Figure 6 It is a stereoscopic view of the main part of the displacement sensor assembly in the decoupling device integrated with the displacement sensor of the present invention;

[0031] Figure 7 It is a schematic diagram of assembling a displacement sensor assembly in a decoupling device integrated with a displacement sensor according to the present invention;

[0032] Figure 8 It is a cross-sectional view of the displacement sensor assembly and the pedal simulation mechanism in the decoupling device integrated with the displacement sensor of the present invention in the assembled state;

[0033] Fig. 9 It is a stereoscopic view of the pedal simulation mechanism in the decoupling device integrated with the displacement sensor of the present invention after the sheath and the fixing ring are removed;

[0034] Fig.10 It is a stereoscopic diagram of the internal structure of the pedal simulation mechanism in the decoupling device integrated with the displacement sensor of the present invention. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects of the present invention easier to understand, the following embodiments are combined with the accompanying drawings to explain the present invention in detail. Figure 2 The direction from left to right shown in the middle paper is the direction from back to front in this embodiment.

[0036] See also Figures 1 to 10 As shown in , the decoupling device provided in this embodiment includes a pedal simulation mechanism and a displacement sensor assembly, wherein:

[0037] The pedal simulation mechanism includes a multi-stage elastic component 2 and an input push rod component 1 which are arranged front and back relative to each other; the multi-stage elastic component 2 includes a guide rod 21, and a spring support seat 22, a third elastic member 23 and a bearing seat 24 are sequentially mounted on the outer circumference of the guide rod 21 from back to front, and a second elastic member 26 is also installed between the spring support seat 22 and the bearing seat 24, and at least one of the spring support seat 22 and the bearing seat 24 can move forward and backward relative to the guide rod 21; the input push rod component 1 includes an input push rod 11, and a first elastic member 14 mounted on the outer circumference of the input push rod 11, and the rear end of the input push rod 11 is used to connect to an external pedal and the front end is arranged opposite to the rear end of the guide rod 21, and the two ends of the first elastic member 14 act on the multi-stage elastic component 2 and the input push rod 11 respectively, so as to form a preload between the input push rod 11 and the multi-stage elastic member;

[0038] The pedal simulation mechanism further includes a shell 3, a sheath 5 and a fixing ring 4. The shell 3 is in the shape of a cylinder with an open front end, and the interior of the shell 3 is formed with a housing cavity for accommodating at least a portion of the input push rod assembly 1 and at least a portion of the multi-stage elastic assembly 2. The rear end surface of the shell 3 is provided with a mounting through hole for passing the input push rod 11. The shell 3 is fixedly mounted on the outer periphery of the input push rod 11 to allow the shell 3 to move synchronously with the input push rod 11. The fixing ring 4 is sleeved on the outer periphery of the shell 3 and allows the shell 3 to move forward and backward relative to the fixing ring 4. The sheath 5 is in the shape of a cylinder with an open front end and is sleeved on the outer periphery of the fixing ring 4. The front end of the sheath 5 has a through hole for passing the input push rod 11, and the shell 3 is accommodated inside the sheath 5.

[0039] The displacement sensor assembly 6 includes a shell 61, an external mounting frame 63, a PCB circuit board 64, a PCB circuit board 64 and a sensing steel ring 67; a connector 62 with a PIN pin is installed on the shell 61 for electrically connecting the driving mechanism of the decoupling device; the PCB circuit board 64 and the flexible circuit board 65 are both fixed on the external mounting frame 63, and the PIN pin of the connector 62 is connected to the PCB circuit board 64; the sensing steel ring 67 and the external mounting frame 63 are respectively installed on the fixing ring 4 and the outer shell 3, and the flexible circuit board 65 is used to detect the displacement difference of the sensing steel ring 67 on the preset active path.

[0040] Based on the above technical solution, the decoupling device integrated with the displacement sensor includes a pedal simulation mechanism and a displacement sensor assembly, the pedal simulation mechanism includes a multi-stage elastic assembly 2, an input push rod assembly 1, a shell 3, a fixing ring 4, and a sheath 5, the displacement sensor assembly 6 includes a shell 61, an external mounting frame 63, a PCB circuit board 64, a PCB circuit board 64 and a sensing steel ring 67, the input push rod 11 assembly 1 includes an input push rod 11 and a first elastic member 14, the multi-stage elastic assembly 2 includes a guide rod 21, a spring support seat 22, a third elastic member 23, a bearing seat 24, and a second elastic member 26. In a specific application, when the pedal connected to the rear end of the input push rod 11 is gradually subjected to force to cause the input push rod 11 to move forward, the first elastic member 14 first acts and provides a reverse feedback force to the input push rod 11 and the pedal to simulate a preliminary pedal braking feeling, and then the first elastic member 14 promotes the relative movement between the spring support seat 22 and the bearing seat 24 , and the second elastic component 26 acts and provides a reverse feedback force to the input push rod 11 and the pedal to simulate further pedal braking feeling; finally, when the movement between the spring support seat 22 and the bearing seat 24 acts on the third elastic component 23, the third elastic component 23 acts and provides a reverse feedback force to the input push rod 11 and the pedal to simulate further pedal braking feeling, so that in the process of the driver stepping on the pedal, a total of three elastic components gradually provide feedback force, and the feedback force increases step by step, so that the braking feeling simulated by the pedal is more real and reliable, and the force transmission is smoother, and the displacement sensor assembly 6 can achieve the purpose of displacement difference detection by sensing the movement of the steel ring 67 relative to the flexible circuit board 65. The setting of the external mounting frame 63 makes the installation of the flexible circuit board 65 and the PCB circuit board 64 more convenient, the detection effect is better, and the integration of each component is higher, which greatly reduces the space layout and the number of parts, making the space layout more compact.

[0041] In a preferred embodiment, the outer periphery of the input push rod 11 is also covered with adjacently arranged front dust cover 13 and rear dust cover 12, and the two ends of the first elastic member 14 are respectively against the front dust cover 13 and the spring support seat 22, and the front dust cover 13 and the rear dust cover 12 are respectively tightly attached to the front and rear sides of the mounting through hole and clamp the outer shell 3.

[0042] It is worth pointing out that the above is only the best embodiment of the present case. In fact, the housing 3 can also be directly fixed on the input push rod 11 to achieve the purpose of synchronous movement, including but not limited to clamping, riveting, welding, etc., and the rear end of the first elastic member 14 can also directly abut against the inner bottom surface of the housing 3, but it is not limited to this. In addition, it can be seen from the following content that the role of the housing 3 is to move forward and backward with the input push rod 11 together with the sensing part of the displacement sensor, so the housing can also be a bracket. At the same time, without considering the convenience of disassembly, the housing 11 and the two dust covers can also be an integrated structure with the input push rod 11. Therefore, the above is only the best embodiment of the present case, and the specific implementation plan is not limited to this.

[0043] As a further preferred embodiment, the rear end of the guide rod 21 is provided with an axial hole, and at least a portion of the front end of the input push rod 11 extends into the axial hole. Furthermore, in this embodiment, the spring support seat 22 is fixedly mounted on the outer periphery of the guide rod 21, and the bearing seat 24 is movably mounted on the outer periphery of the guide rod 21 and can move forward and backward along the outer periphery of the guide rod 21. However, it is also possible that the bearing seat 24 is fixedly connected to the guide rod 21 and the spring support seat 22 is slidably connected to the outer periphery of the guide rod 21, or both are movable, and the third elastic member 23 is fixedly mounted on the outer periphery of the guide rod 21, which can realize that the second elastic member 26 and the third elastic member 23 are sequentially urged to act in the process of the pedal being gradually stressed, and it is not limited thereto.

[0044] As a further preferred embodiment, the first elastic member 14 is a conical coil spring, the second elastic member 26 is a cylindrical coil spring, and the third elastic member 23 is a shock-absorbing spring block, but all three may also be springs. Further, there is a gap between the third elastic member 23 and the bearing seat 24. Specifically, the outer periphery of the guide rod 21 is formed with a step for limiting the front end of the third elastic member 23, and the rear end of the third elastic member 23 is limited by the front side of the spring support seat 22. Further, the rear end surface of the bearing seat 24 is also recessed forward to form an annular mounting groove, and a bearing 25 is embedded in the annular mounting groove, the inner ring of the bearing 25 is fitted with the inner edge of the annular mounting groove, and the outer ring of the bearing 25 can rotate freely.

[0045] In a preferred embodiment, the external mounting frame 63 is in an "L" shape as a whole, including a transverse portion and a longitudinal portion. Further, a first mounting groove for embedding a PCB board is provided on the transverse portion. Further, the longitudinal portion is in an elongated tile-like structure, and the edges of the two sides with a longer length are covered with a metal bushing 66, and the metal bushing 66 and the longitudinal portion are together surrounded to form a second mounting groove for embedding a flexible circuit board 65. Further, the flexible circuit board 65 is in an elongated shape as a whole. Further, the induction steel ring 67 is in an arc shape as a whole. Further, the outer periphery of the input push rod 11 is also recessed to form a front annular positioning groove and a rear annular positioning groove for clamping the front dust cover 13 and the rear dust cover 12, as a preset position for the installation of the two, and the rear end of the input push rod 11 is connected to the pedal via a connector 9.

[0046] Combination Figure 1 and Figure 2 As shown in , the decoupling device also includes a linkage mechanism, a driving mechanism and a power-assisting mechanism. The linkage mechanism 7, the driving mechanism, the displacement sensing mechanism 6 and the power-assisting mechanism are all installed at the front of the pedal simulation mechanism, and the linkage mechanism 7 is pressed against and connected to fix the above-mentioned fixing ring 4 and the bearing seat 24, and the detection part 62 of the displacement sensing mechanism 6 is fixed on the fixing ring 4 and the sensing part 61 is fixed on the housing 3, so that it can move relatively to realize the displacement detection function, and then transmit the signal to the driving mechanism, and the driving mechanism transmits the action to the power-assisting mechanism through the linkage mechanism 7 and the output push rod 8, so as to realize the purpose of power-assisting braking. Furthermore, the external mounting frame 63 is fixed on the wall of the fixing ring 4, and the sensing steel ring 67 is embedded on the outer wall of the housing 3, so as to realize the above-mentioned detection purpose under the relative movement of the two.

[0047] Specifically, the housing 3 is injection molded from PA66-GF35 material, the front dust cover 13 and the rear dust cover 12 are both butterfly-shaped and made of POM material, the bearing seat 24 is a stamped part and has an interference fit with the bearing 25, the guide rod 21 is a machined part, the sleeve 5 is made of EPDM material, and the fixing ring 4 is overmolded. It is worth pointing out that the multi-stage elastic component 2 is the core part of the pedal simulation mechanism. It is an internal force component. Since there is no mechanical connection with the external decoupler master cylinder output under normal conditions, it must meet both the driver's pedal feel and the NVH requirements, so there are high requirements for the material, dimensional accuracy, performance and appearance quality of the parts.

[0048] It is worth pointing out that, combined with Figure 7 , Figure 8 as well as Fig. 9As shown in the figure, the driving mechanism used in this case adopts a conventional motor drive in the field, and the power-assisting mechanism adopts a conventional hydraulic power-assisting structure, which is a well-known technology in the field and is not the main invention of this case, so it is omitted in the figure. At the same time, the linkage mechanism adopts a structure of a gear set plus a hollow screw 71, and at least a part of the front end of the guide rod 21 extends into the hollow screw 71. The gear set drives the hollow screw 71 and the gear set outside the motor shaft of the driving mechanism, so that the action can be transmitted smoothly. The screw 71 can move back and forth under the action of the gear set, converting the circumferential action into a linear action, thereby realizing the entire action logic of the decoupling mechanism.

[0049] The rear end of the input push rod 11 in the pedal simulation mechanism is connected to an external pedal, and the pedal continuously provides thrust to the input push rod 11 and pushes the input push rod 11 forward. The operation method includes:

[0050] The first stage: the input push rod 11 moves forward due to the pedal thrust, and drives the housing 3, the front dust cover 13, and the rear dust cover 12 to move forward. The first elastic member 14 is compressed and provides a backward feedback force to the input push rod 11 and the pedal through the front dust cover 13;

[0051] The second stage: the input push rod 11 continues to move forward due to the pedal thrust, the guide rod 21, the spring support seat 22, and the third elastic member 23 of the multi-stage elastic assembly 2 move forward under the action of the first elastic member 14, and the bearing seat 24 is in the initial position due to the abutment with the linkage mechanism 7 installed at the rear of the pedal simulation mechanism, the second elastic member 26 is compressed and further provides a backward feedback force to the input push rod 11 and the pedal through the spring support seat 22, the first elastic member 14, and the front dust cover 13, and in the second stage, the first elastic member 14 is in a state of continuous action;

[0052] The third stage: the input push rod 11 moves further forward due to the pedal thrust, and the guide rod 21, spring support seat 22, and third elastic member 23 of the multi-stage elastic assembly 2 move forward under the action of the first elastic member 14. Since the bearing seat 24 is in the initial position, it abuts against the front end surface of the third elastic member 23, and the third elastic member 23 is clamped by the spring support seat 22 and the bearing seat 24. The third elastic member 23 is compressed and further provides backward feedback force to the input push rod 11 and the pedal through the spring support seat 22, the first elastic member 14, and the front dust cover 13. In the third stage, the first elastic member 14 and the second elastic member 26 are both in a state of continuous action.

[0053] The above description is only a preferred embodiment of the present invention, which is only illustrative and not restrictive of the present invention. Those skilled in the art understand that many changes, modifications, and even equivalences may be made to the present invention within the spirit and scope defined by the claims of the present invention, but all of them will fall within the scope of protection of the present invention.

Claims

1. A decoupling device integrated with a displacement sensor, comprising a pedal simulation mechanism and a displacement sensor assembly, characterized in that The pedal simulation mechanism comprises a multi-stage elastic component (2) and an input push rod component (1) arranged front and back relative to each other; the multi-stage elastic component (2) comprises a guide rod (21), the outer circumference of which is sequentially provided with a spring support seat (22), a third elastic member (23) and a bearing seat (24) from back to front, and a second elastic member (26) is further provided between the spring support seat (22) and the bearing seat (24); at least one of the spring support seat (22) and the bearing seat (24) can move forward and backward relative to the guide rod (21); the input push rod component (21) comprises a guide rod (21), the outer circumference of which is provided with a spring support seat (22), a third elastic member (23) and a bearing seat (24) in sequence from back to front, and a second elastic member (26) is further provided between the spring support seat (22) and the bearing seat (24), and at least one of the spring support seat (22) and the bearing seat (24) can move forward and backward relative to the guide rod (21); The rod assembly (1) comprises an input push rod (11), a first elastic member (14) sleeved on the outer periphery of the input push rod (11), and the rear end of the input push rod (11) is used to connect to an external pedal, while the front end is arranged opposite to the rear end of the guide rod (21), and the two ends of the first elastic member (14) act on the multi-stage elastic assembly (2) and the input push rod (11) respectively, so as to form a pre-tightening force between the input push rod (11) and the multi-stage elastic member; the pedal simulation mechanism also comprises a shell (3), a sheath (5) and a fixing ring (4), and the shell (3) is in the shape of a The front end of the housing (3) is in the shape of a cylinder with an open front end, and the rear end surface is provided with a mounting through hole for passing the input push rod (11). The housing (3) is fixedly mounted on the outer periphery of the input push rod (11) to allow the housing (3) to move synchronously with the input push rod (11); the fixing ring (4) is fitted on the outer periphery of the housing (3) and allows the housing (3) to move forward and backward relative to the fixing ring (4); the sleeve (5) is in the shape of a cylinder with an open front end and is fitted on the outer periphery of the fixing ring (4). The front end of the sleeve (5) has a through hole for passing the input push rod (11). The housing (3) is provided with a hole, and the housing (3) is accommodated in the sheath (5); the displacement sensor assembly (6) comprises a housing (61), an external mounting frame (63), a PCB circuit board (64), a flexible circuit board (65) and a sensing steel ring (67); a connector (62) with a PIN pin is installed on the housing (61) for electrically connecting to a driving mechanism of a decoupling device; the PCB circuit board (64) and the flexible circuit board (65) are both fixedly mounted on the external mounting frame (63), and the PIN pin of the connector (62) is connected to the PCB circuit board (64);The induction steel ring (67) and the external mounting frame (63) are respectively mounted on the fixing ring (4) and the housing (3); the flexible circuit board (65) is used to detect the displacement difference of the induction steel ring (67) on the preset active path; the outer periphery of the input push rod (11) is also provided with a front dust cover (13) and a rear dust cover (12) arranged adjacently, and the two ends of the first elastic member (14) are respectively against the front dust cover (13) and the spring support seat (22); the front dust cover (13) and the rear dust cover (12) are respectively closely attached to the front and rear sides of the mounting through hole and clamp the housing (3); the external mounting frame (63) is in an "L" shape as a whole, including a transverse portion and a longitudinal portion. ; 2. The decoupling device with integrated displacement sensor according to claim 1, characterized in that: The guide rod (21) has an axial hole at its rear end, and at least a portion of the front end of the input push rod (11) extends into the axial hole.

3. The decoupling device with integrated displacement sensor according to claim 2, characterized in that: The spring support seat (22) is fixedly mounted on the outer periphery of the guide rod (21), and the bearing seat (24) is movably mounted on the outer periphery of the guide rod (21) and is capable of moving forward and backward along the outer periphery of the guide rod (21).

4. The decoupling device integrated with a displacement sensor according to claim 3, characterized in that: The first elastic component (14) is a conical coil spring, the second elastic component (26) is a cylindrical coil spring, and the third elastic component (23) is a shock-absorbing spring block.

5. The decoupling device with integrated displacement sensor according to claim 4, characterized in that: There is a gap between the third elastic member (23) and the bearing seat (24), the outer periphery of the guide rod (21) forms a step for limiting the front end of the third elastic member (23), and the rear end of the third elastic member (23) is limited by the front side of the spring support seat (22).

6. The decoupling device with integrated displacement sensor according to claim 5, characterized in that: The rear end surface of the bearing seat (24) is also recessed forward to form an annular mounting groove, and a bearing (25) is embedded in the annular mounting groove. The inner ring of the bearing (25) is fitted with the inner edge of the annular mounting groove, and the outer ring of the bearing (25) can rotate freely.

7. The decoupling device integrated with a displacement sensor according to claim 1, characterized in that: The transverse portion is provided with a first mounting groove for embedding the PCB circuit board, the longitudinal portion is in the form of a long strip-shaped tile-like structure, the edges of the two longer sides are covered with metal bushings (66), and the metal bushings (66) and the longitudinal portion are combined to form a second mounting groove for embedding the flexible circuit board (65).

8. The decoupling device with integrated displacement sensor according to claim 7, characterized in that: The flexible circuit board (65) is in the shape of an elongated strip as a whole, and the induction steel ring (67) is in the shape of an arc strip as a whole.

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