Disassembling device for torque sensor of steering wheel

Abstract

The invention discloses a disassembling device for a torque sensor of a steering wheel, the torque sensor of the steering wheel comprises a lower gear shaft and an upper connecting shaft which are in mutual compression joint, and a sensor sleeving the lower gear shaft, and the disassembling device comprises a support frame; the lower fixing piece is used for fixing the lower gear shaft, and the lower fixing piece is fixedly connected with the supporting frame; the connecting piece is fixedly connected with the upper connecting shaft; the upper fixing piece is clamped with the connecting piece; the stretching part is fixed to the supporting frame, the stretching part and the lower fixing part are oppositely arranged, the upper fixing part is connected with the stretching part, and the stretching part sequentially drives the upper fixing part, the connecting part and the upper connecting shaft to move in the direction away from the lower gear shaft. Under the driving of the tensile force of the tensile piece, a tensile force is applied between the lower gear shaft and the upper connecting shaft, the lower gear shaft and the upper connecting shaft are split through the tensile force, sensors on the lower gear shaft and the upper connecting shaft are replaced, the lower gear shaft and the upper connecting shaft can still be used after cold pressing connection again, complete replacement is not needed, the maintenance cost is reduced, and the economical efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of disassembling a vehicle torque sensor, and in particular to a disassembling device for a steering wheel torque sensor. Background Art

[0002] A torque sensor is usually installed under the steering wheel of a car so that the system can control the turning of the vehicle according to the rotation angle of the steering wheel. The torque sensor usually includes a lower gear shaft, a torsion bar connected to the steering wheel, and an upper connecting shaft mounted on the torsion bar. The lower gear shaft and the upper connecting shaft are cold-pressed to form a tight mechanical fit. At the same time, the steel hoop of the sensor is also mounted on the lower gear shaft and fixed by bolts. Except for the connection, the diameters of the lower gear shaft and the upper connecting shaft are larger than the inner diameter of the steel hoop of the sensor. Therefore, when the sensor needs to be repaired or replaced, it cannot be removed, or it cannot be restored after removal, and more parts need to be replaced.

[0003] In the related art, each company replaces the steering wheel torque sensor as a whole, and the replacement price is as high as 10,000 to 40,000 yuan, which increases the maintenance and replacement costs and reduces the economic efficiency. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] In view of this, the present invention provides a disassembly device for a steering wheel torque sensor, wherein the disassembly device can fix the lower gear shaft through the lower fixing member, and connect the upper connecting shaft to the tensile member through the upper fixing member. Driven by the tensile force of the tensile member, a tensile force is applied between the lower gear shaft and the upper connecting shaft, and the lower gear shaft and the upper connecting shaft are disassembled by the tensile force, and the sensor thereon is replaced. After being reconnected by cold pressing, it can continue to be used without replacing all of them, thereby reducing maintenance and repair costs and improving economy.

[0006] Specifically, the following technical solutions are included:

[0007] The present invention provides a disassembling device for a steering wheel torque sensor, wherein the steering wheel torque sensor comprises a lower gear shaft and an upper connecting shaft which are crimped to each other, and a sensor which is sleeved on the lower gear shaft. The disassembling device comprises:

[0008] Support frame;

[0009] A lower fixing member, used to fix the lower gear shaft, the lower fixing member being fixedly connected to the support frame;

[0010] A connecting member, fixedly connected to the upper connecting shaft;

[0011] An upper fixing member, clamped with the connecting member;

[0012] A stretching member is fixed on the support frame, and the stretching member is arranged opposite to the lower fixing member, the upper fixing member is connected to the stretching member, and the stretching member sequentially drives the upper fixing member, the connecting member and the upper connecting member to move in a direction away from the lower gear shaft.

[0013] Optionally, the support frame includes: a top plate and a bottom plate, and a plurality of columns arranged between the top plate and the bottom plate, the stretching member is fixedly connected to the top plate, and the lower fixing member is fixedly connected to the bottom plate.

[0014] Optionally, a threaded hole is provided on a side of the lower gear shaft away from the upper connecting shaft, a bolt is provided in the threaded hole, the bolt includes a head and a screw, and the lower fixing member includes:

[0015] A clamping plate, which is sleeved on the screw rod and is located between the head and the lower gear shaft;

[0016] The fixed lower plate is sleeved on the lower gear shaft, and the clamping plate is located on a side of the fixed lower plate away from the stretching member, and the fixed lower plate is fixedly connected to the support frame.

[0017] Optionally, a first U-shaped notch is provided on the clamping plate, the screw rod is located in the first U-shaped notch, and the width of the first U-shaped notch is greater than the diameter of the screw rod and smaller than the diameter of the head.

[0018] Optionally, the fixed lower plate is provided with a through hole, the lower gear shaft passes through the through hole, the fixed lower plate is provided with an open slot, the open slot and the support frame form a receiving space, and the receiving space is used to receive the clamping plate and the bolt;

[0019] Wherein, the diameter of the through hole is larger than the diameter of the head and the diameter of the lower gear shaft, and the diameter of the through hole is smaller than the size of the clamping plate.

[0020] Optionally, the stretching member comprises:

[0021] A telescopic cylinder, comprising a fixed end and a telescopic end, wherein the fixed end is fixedly connected to the support frame, and the telescopic end can move toward or away from the lower fixing member;

[0022] A connecting head is arranged on a side of the telescopic end facing the lower fixing member, and the connecting head is connected to the upper fixing member.

[0023] Optionally, the connector includes:

[0024] a first connecting plate;

[0025] a second connecting plate, the second connecting plate being arranged opposite to the first connecting plate;

[0026] A connecting column is arranged between the first connecting plate and the second connecting plate, the diameter of the connecting column is smaller than the size of the first connecting plate and the second connecting plate, the first connecting plate, the connecting column and the second connecting plate form a groove, and the upper fixing piece is arranged in the groove.

[0027] Optionally, the upper fixing member includes: an upper connecting portion and a lower connecting portion, the upper connecting portion is connected to the connecting head, and the lower connecting portion is connected to the connecting member.

[0028] Optionally, the upper connecting portion includes a third connecting plate and a fourth connecting plate arranged opposite to each other, a first vertical plate and a second vertical plate for connecting the third connecting plate and the fourth connecting plate, the first vertical plate, the third connecting plate, the fourth connecting plate and the second vertical plate form a first through opening, the third connecting plate is provided with a third through opening, the third through opening is communicated with the first through opening, and at least part of the connecting head is located in the first through opening and the third through opening;

[0029] The lower connecting part includes a fifth connecting plate, which is located on the side of the fourth connecting plate away from the third connecting plate. The fourth connecting plate and the fifth connecting plate are connected by a third vertical plate and a fourth vertical plate. The third vertical plate, the fourth connecting plate, the fifth connecting plate and the fourth vertical plate form a second through opening. A second U-shaped groove is provided on the fifth connecting plate. The second U-shaped groove is connected with the second through opening. The connecting piece is located in the second through hole, and the upper connecting shaft is located in the second U-shaped groove.

[0030] Optionally, a connecting groove is provided at one end of the upper connecting shaft away from the lower gear shaft, and the connecting member comprises: a pair of connecting blocks connected to each other, a semicircular groove is provided on the connecting block, an arc-shaped protrusion is provided in the semicircular groove, the axis of the arc-shaped protrusion coincides with the axis of the semicircular groove, the arc-shaped protrusion matches the shape of the connecting groove, and the semicircular groove matches the upper connecting shaft;

[0031] One of the connecting blocks is provided with a bolt through hole, and the other connecting block is provided with a bolt blind hole. The bolt through hole and the bolt blind hole are arranged correspondingly, and the connecting piece is connected to the upper fixing piece.

[0032] The embodiment of the present invention provides a disassembly device for a steering wheel torque sensor, wherein the disassembly device includes a support frame for supporting a lower fixing member and a stretching member, and the lower fixing member and the stretching member are arranged relative to each other, the lower fixing member is used to fix the lower gear shaft, the connecting member is fixedly connected to the upper connecting shaft, the upper fixing member is further connected to the stretching member, and the connecting member is connected to the upper fixing member, and the tension of the stretching member drives the upper fixing member, the connecting member and the upper connecting shaft to be stretched in a direction away from the lower gear shaft in turn, and the lower gear shaft and the upper connecting shaft are separated under the action of the tension, so that the sensor is disassembled, and after the sensor is replaced and overhauled, the connection between the lower gear shaft and the upper connecting shaft is re-realized through the connection and disassembly cold pressing method, which is convenient for the continued use of the steering wheel torque sensor, and the service life of the steering wheel torque sensor is increased, while the replacement and maintenance costs are reduced, and the economy is improved.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 is a schematic diagram of a disassembling device according to an embodiment of the present invention;

[0036] Figure 2 is a schematic diagram of a support frame according to an embodiment of the present invention;

[0037] Figure 3 is a schematic diagram of a lower fixing member according to an embodiment of the present invention;

[0038] Figure 4 A schematic diagram of a card board according to an embodiment of the present invention;

[0039] Figure 5 is a schematic diagram of fixing a lower plate according to an embodiment of the present invention;

[0040] Figure 6 is a schematic diagram of a stretching member according to an embodiment of the present invention;

[0041] Figure 7 is a schematic diagram of an upper fixing member according to an embodiment of the present invention;

[0042] Figure 8 is a schematic diagram of a connecting member according to an embodiment of the present invention;

[0043] Fig. 9 is a schematic diagram of a steering wheel torque sensor according to an embodiment of the present invention;

[0044] Fig.10a is a schematic diagram of another connecting member according to an embodiment of the present invention;

[0045] Fig.10b FIG. 1 is a schematic diagram of a connecting member according to an embodiment of the present invention.

[0046] in, Figures 1 to 10b The corresponding relationship between the reference numerals and the component names is as follows:

[0047] 100 disassembling device, 110 supporting frame, 111 top plate, 112 upright column, 113 bottom plate, 120 lower fixing member, 121 clamping plate, 1211 first U-shaped notch, 122 fixed lower plate, 1221 through hole, 1222 open slot, 130 stretching member, 131 telescopic cylinder, 1311 fixed end, 1312 telescopic end, 132 connector, 1321 first connecting plate, 1322 second connecting plate, 1323 connecting column, 140 upper fixing member, 141 third connecting plate, 1411 third through hole, 142 fourth connecting member Connecting plate, 143 fifth connecting plate, 1431 second U-shaped notch, 144 first vertical plate, 145 second vertical plate, 146 third vertical plate, 147 fourth vertical plate, 148 first through opening, 149 second through opening, 150 connecting piece, 151 connecting block, 1511 semicircular groove, 1512 arc-shaped protrusion, 152 connecting bolt, 153 nut, 154 connecting through hole, 155 opening, 200 steering wheel torque sensor, 210 lower gear shaft, 220 upper connecting shaft, 221 connecting groove, 230 sensor, 240 bolt. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Before further describing the embodiments of the present invention in detail, the directional nouns involved in the embodiments of the present invention, such as "upper part", "lower part" and "side part", do not have the meaning of limiting the protection scope of the present invention.

[0050] To make the technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

[0051] Figure 1 is a schematic diagram of a disassembling device according to an embodiment of the present invention; Fig. 9 FIG. 4 is a schematic diagram of a steering wheel torque sensor according to an embodiment of the present invention.

[0052] like Figure 1 and Fig. 9 As shown, an embodiment of the present invention provides a disassembling device 100 for a steering wheel torque sensor, wherein the steering wheel torque sensor 200 includes a lower gear shaft 210 and an upper connecting shaft 220 which are crimped to each other, and a sensor 230 which is sleeved on the lower gear shaft 210. The disassembling device 100 includes:

[0053] Support frame 110;

[0054] A lower fixing member 120 is used to fix the lower gear shaft 210, and the lower fixing member 120 is fixedly connected to the support frame 110;

[0055] The connecting member 150 is fixedly connected to the upper connecting shaft 220;

[0056] The upper fixing member 140 is clamped with the connecting member 150;

[0057] The stretching member 130 is fixed on the support frame 110, and the stretching member 130 is arranged opposite to the lower fixing member 120, and the upper fixing member 140 is connected to the stretching member 130. The stretching member 130 drives the upper fixing member 140, the connecting member 150 and the upper connecting shaft 220 to move in a direction away from the lower gear shaft 210 in turn.

[0058] The disassembling device 100 includes a support frame 110 for supporting a lower fixing member 120 and a stretching member 130, and the lower fixing member 120 is arranged opposite to the stretching member 130. The lower fixing member 120 is used to fix the lower gear shaft 210. The connecting member 150 is fixedly connected to the upper connecting shaft 220. The upper fixing member 140 is further connected to the stretching member 130. The connecting member 150 is connected to the upper fixing member 140. Through the tension of the stretching member 130, the upper fixing member 140, the connecting member 150 and the upper connecting shaft 220 are sequentially driven to stretch in a direction away from the lower gear shaft 210. Under the action of the tension, the lower gear shaft 210 and the upper connecting shaft 220 are separated, so that the sensor 230 is disassembled. After the sensor 230 is replaced and overhauled, the connection between the lower gear shaft 210 and the upper connecting shaft 220 is re-realized through the connection and unloading cold pressing method, which is convenient for the continued use of the steering wheel torque sensor 200, and the service life of the steering wheel torque sensor 200 is increased. At the same time, the replacement and maintenance costs are reduced, and the economy is improved.

[0059] Specifically, the lower gear shaft 210 and the upper connecting shaft 220 are mechanically tightly connected by cold pressing, and the diameter of the connection between the lower gear shaft 210 and the upper connecting shaft 220 is smaller than the diameter of the non-connection. The steel hoop ring and the sensor 230 thereon are arranged on the connection and fixedly connected to the lower gear shaft 210 by screws. At this time, the upper connecting shaft 220 and the lower gear shaft 210 are disassembled, and the screws are removed to achieve the replacement of the sensor 230 on the steel hoop ring. The present application fixes the lower gear shaft 210 to the support frame 110 through the lower fixing member 120, and after the upper connecting shaft 220 is clamped by the connecting member 150, it is connected to the upper fixing member 140, and the upper fixing member 140 is connected to the stretching member 130. The stretching member 130 sequentially drives the upper fixing member 140, the connecting member 150 and the upper connecting shaft 220 to move away from the lower gear shaft 210, so that a pulling force is formed between the lower gear shaft 210 and the upper connecting shaft 220. The mechanical tight fit is overcome by the pulling force of the stretching member 130, so that the lower gear shaft 210 and the upper connecting shaft 220 are separated, and then the sensor 230 between the two is replaced, thereby avoiding the direct replacement of the entire steering wheel torque sensor 200, reducing maintenance costs, and improving the economy of maintenance.

[0060] Figure 2 Schematic diagram of a support frame according to an embodiment of the present invention.

[0061] In a possible implementation, Figure 2 As shown, the support frame 110 includes: a top plate 111 and a bottom plate 113, and a plurality of columns 112 arranged between the top plate 111 and the bottom plate 113, a tension member 130 is fixedly connected to the top plate 111, and a lower fixing member 120 is fixedly connected to the bottom plate 113.

[0062] The support frame 110 includes a top plate 111 and a bottom plate 113, and a column 112 supporting the top plate 111 and the bottom plate 113. The distance between the top plate 111 and the bottom plate 113 is within the telescopic length range of the stretching member 130, that is, the distance between the top plate 111 and the bottom plate 113 is not greater than the sum of the height of the steering wheel torque sensor 200 and the telescopic length of the stretching member 130, so as to ensure the effective stretching of the stretching member 130. In this embodiment, the column 112 and the top plate 111, and the column 112 and the bottom plate 113 can be connected by welding, or the column 112 can penetrate into the top plate 111 and / or the column 112 penetrates into the bottom plate 113, that is, the column 112 and the bottom plate 113 and / or the column 112 and the top plate 111 can achieve mechanical tight fit by cold pressing.

[0063] It is understandable that there are at least three columns 112 to ensure the stability of the support between the top plate 111 and the bottom plate 113. Four columns 112 can also be provided to improve the reliability of the support between the top plate 111 and the bottom plate 113 as much as possible, while ensuring the convenience of the lower fixing member 120 entering the bottom plate 113 and fixing it with the bottom plate 113. Of course, more than four columns 112 can also be provided to increase the stability of the support for the top plate 111 and the bottom plate 113, but it will affect the convenience of the lower fixing member 120 fixing it with the bottom plate 113, and will also increase the manufacturing cost. Therefore, in this embodiment, four columns 112 are selected to support the top plate 111 and the bottom plate 113.

[0064] Figure 3 Schematic diagram of a lower fixing member according to an embodiment of the present invention.

[0065] In a possible implementation, Figure 3 As shown, a threaded hole is provided on the side of the lower gear shaft 210 away from the upper connecting shaft 220, and a bolt 240 is provided in the threaded hole. The bolt 240 includes a head and a screw rod. The lower fixing member 120 includes:

[0066] A clamping plate 121 is sleeved on the screw rod, and the clamping plate 121 is located between the head and the lower gear shaft 210;

[0067] The fixed lower plate 122 is sleeved on the lower gear shaft 210 , and the clamping plate 121 is located on a side of the fixed lower plate 122 away from the tensioning member 120 . The fixed lower plate 122 is fixedly connected to the support frame 110 .

[0068] Among them, a bolt 240 is usually connected on the side of the lower gear shaft 210 away from the upper connecting shaft 220, that is, on the side of the lower gear shaft 210 facing the bottom plate 111. This is provided by the steering wheel torque sensor 200. Through this bolt 240, we set the lower fixing member 120. The lower gear shaft 210 and the bolt 240 pass through the fixed lower plate 122, and the clamping plate 121 is clamped between the head of the bolt 240 and the lower gear shaft 210. The lower gear shaft 210 is connected to the fixed lower plate 122 through the clamping plate 121 and the bolt 240, and then the fixed lower plate 122 is fixedly connected to the bottom plate 113 by screws to ensure the fixation of the lower gear shaft 210. In this way, after the upper connecting shaft 220 is fixed, it is convenient to apply a tensile force to the upper connecting shaft 220 to realize the disassembly of the lower gear shaft 210 and the upper connecting shaft 220.

[0069] Figure 4 Schematic diagram of a card board according to an embodiment of the present invention.

[0070] In a possible implementation, Figure 4As shown, a first U-shaped notch 1211 is provided on the clamping plate 121 , and the screw is located in the first U-shaped notch 1211 . The width of the first U-shaped notch 1211 is greater than the diameter of the screw and smaller than the diameter of the head.

[0071] Specifically, a first U-shaped slot 1211 is provided on the clamping plate 121, and the width of the first U-shaped slot 1211 is greater than the diameter of the screw, and the diameter of the first U-shaped slot 1211 is smaller than the diameter of the head, so that the bolt 240 on the lower gear shaft 210 is slid into the first U-shaped slot 1211 of the clamping plate 121, and the clamping plate 121 is clamped by tightening the bolt 240, and the clamping plate 121 is clamped on the side of the fixed lower plate 122 away from the upper connecting shaft 220, and the connection between the lower gear shaft 210 and the fixed lower plate 122 is realized by the clamping plate 121 and the bolt 240.

[0072] Figure 5 FIG. 4 is a schematic diagram of fixing a lower plate according to an embodiment of the present invention.

[0073] In a possible implementation, Figure 5 As shown, a through hole 1221 is provided on the fixed lower plate 122, and the lower gear shaft 210 passes through the through hole 1221. An open slot 1222 is provided on the fixed lower plate 122, and the open slot 1222 and the support frame 110 form a receiving space, and the receiving space is used to receive the clamping plate 121 and the bolt 240;

[0074] The diameter of the through hole 1221 is larger than the diameter of the head and the diameter of the lower gear shaft 210 , and the diameter of the through hole 1221 is smaller than the size of the clamping plate 121 .

[0075] Specifically, a through hole 1221 is provided on the fixed lower plate 122, and the diameter of the through hole 1221 is larger than the diameter of the lower gear shaft 210 and the head. This makes it easy to smoothly extend the lower gear shaft 210 and the head of the bolt 240 under the fixed lower plate 122, and then insert the clamping plate 121 into the screw rod of the bolt 240, tighten the bolt 240 to clamp the clamping plate 121, and prevent the clamping plate 121 from falling off.

[0076] It can be understood that an open groove 1222 is provided on the fixed lower plate 122, that is, the fixed lower plate 122 includes a horizontal plate, and a through hole 1221 is usually provided at the center of the horizontal plate. Three vertical plates are also vertically provided on the horizontal plate, and no vertical plate is provided on one side, forming an open groove 1222, which is convenient for installing the clamping plate 1221 on the screw rod of the bolt 240, thereby ensuring the feasibility of operating the lower fixing member 120.

[0077] Figure 6 Schematic diagram of a stretching member according to an embodiment of the present invention.

[0078] In a possible implementation, Figure 6As shown, the stretching member 130 includes:

[0079] The telescopic cylinder 131 includes a fixed end 1311 and a telescopic end 1312, wherein the fixed end 1311 is fixedly connected to the support frame 110, and the telescopic end 1312 can move toward or away from the lower fixing member 120;

[0080] The connecting head 132 is disposed on a side of the telescopic end 1312 facing the lower fixing member 120 , and the connecting head 132 is connected to the upper fixing member 140 .

[0081] The stretching member 130 generally includes a telescopic cylinder 131, which may be a hydraulic cylinder, a pneumatic rod or an electric telescopic rod, and can realize reciprocating movement of the telescopic end 1312 in the fixed end 1311. A connector 132 is provided on the side of the telescopic end 1312 away from the fixed end 1311, and the connection between the stretching member 130 and the upper fixed member 140 is realized through the connector 132.

[0082] In this embodiment, the connector 132 and the telescopic end 1312 are fixedly connected by screws, and the screws penetrate the connector 132 and the telescopic end 1312 from the side of the connector 132 away from the telescopic end 1312, and the connector 132 and the telescopic end 1312 are fixedly connected by threads. The fixed end 1311 is connected to the top plate 111 by screws, and the top plate 111 is provided with a through hole for the telescopic end 1312 to pass through.

[0083] It should be noted that the upper connecting shaft 220 is fixed by the connecting head 132, the upper connecting piece 140 and the connecting piece 152, which can gradually absorb the deformation caused by the tension of the tensile member 130, avoid deformation at the cold pressing point of the lower gear shaft 210 and the upper connecting shaft 220, and ensure the re-tightening of the lower gear shaft 210 and the upper connecting shaft 220.

[0084] In a feasible implementation manner, the connector 132 includes:

[0085] A first connecting plate 1321;

[0086] A second connecting plate 1322, the second connecting plate 1322 is arranged opposite to the first connecting plate 1321;

[0087] The connecting column 1323 is arranged between the first connecting plate 1321 and the second connecting plate 1322. The diameter of the connecting column 1323 is smaller than the size of the first connecting plate 1321 and the second connecting plate 1322. The first connecting plate 1321, the connecting column 1323 and the second connecting plate 1322 form a groove, and the upper fixing member 140 is arranged in the groove.

[0088] The connector 132 includes a first connecting plate 1321 and a second connecting plate 1322 arranged in parallel, and a connecting column 1323 arranged between the first connecting plate 1321 and the second connecting plate 1322, so that the connector 132 is in an I-shape on the vertical surface of the bottom plate 113. In other words, a groove is formed at the circumference of the connecting column 1323 to facilitate the detachable connection between the upper fixing member 140 and the connector 132.

[0089] It is understandable that the projection of the first connecting plate 1321 on the bottom plate 113 can be any one of a circle, a square, a rectangle and a regular polygon. Similarly, the projection of the second connecting plate 1322 on the bottom plate 113 can also be any one of a circle, a square, a rectangle and a regular polygon. The shapes of the first connecting plate 1321 and the second connecting plate 1322 can be the same or different. In this embodiment, the projection of the second connecting plate 1322 on the bottom plate 113 is a square, which is more convenient for the third connecting plate 141 to be hung, improves the contact surface between the third connecting plate 141 and the second connecting plate 1322, and ensures the reliability of the hanging.

[0090] It should be noted that the connecting column 1323 is usually arranged at the center of the first connecting plate 1321 and the center of the second connecting plate 1322, so as to ensure that the grooves formed by the connecting column 1323 and the first connecting plate 1321 and the second connecting plate 1322 are uniform, thereby ensuring the uniformity of the contact force between the upper fixing member 140 and the connecting head 132, improving the uniformity of the tension applied by the tensile member 130, and thereby improving the stability of the tension.

[0091] In a feasible implementation manner, the upper fixing member 140 includes: an upper connecting portion and a lower connecting portion, the upper connecting portion is connected to the connecting head 132 , and the lower connecting portion is connected to the connecting member 150 .

[0092] Among them, the upper fixing member 140 includes an upper connecting part, which is used to connect with the connecting head 132, and the upper fixing member 140 also includes a lower connecting part, which is used to connect with the connecting member 150. In this way, the upper connecting shaft 220 is connected to the tensile member 130 through the upper fixing member 140, and then the tension of the tensile member 130 is applied to the upper connecting shaft 220, so that the tension is formed between the upper connecting shaft 220 and the lower gear shaft 210, and the lower gear shaft 210 is separated from the upper connecting shaft 220, and the sensor 230 on the lower gear shaft 210 is replaced and repaired.

[0093] Figure 7 Schematic diagram of an upper fixing member according to an embodiment of the present invention.

[0094] In a possible implementation, Figure 7As shown, the upper connecting portion includes a third connecting plate 141 and a fourth connecting plate 142 arranged opposite to each other, a first vertical plate 144 and a second vertical plate 145 for connecting the third connecting plate 141 and the fourth connecting plate 142, the first vertical plate 144, the third connecting plate 141, the fourth connecting plate 142 and the second vertical plate 145 form a first through opening 148, the third connecting plate 141 is provided with a third through opening 1411, the third through opening 1411 is communicated with the first through opening 148, and at least part of the connector 132 is located in the first through opening 148 and the third through opening 1411;

[0095] The lower connecting portion includes a fifth connecting plate 143, which is located on the side of the fourth connecting plate 142 away from the third connecting plate 141. The fourth connecting plate 142 and the fifth connecting plate 143 are connected by a third vertical plate 146 and a fourth vertical plate 147. The third vertical plate 146, the fourth connecting plate 142, the fifth connecting plate 143 and the fourth vertical plate 147 form a second through opening 149. A second U-shaped groove 1431 is provided on the fifth connecting plate 143. The second U-shaped groove 1431 is connected to the second through opening 149. The connecting piece 150 is located in the second through opening 149. The upper connecting shaft 220 is located in the second U-shaped groove 1431.

[0096] Among them, Figure 7 As shown, the upper fixing member 140 includes a third connecting plate 141, a fourth connecting plate 142 and a fifth connecting plate 143 which are arranged in parallel, a first vertical plate 144 and a second vertical plate 145 which are arranged opposite to each other and are used to connect the third connecting plate 141 and the fourth connecting plate 142, a third vertical plate 146 and a fourth vertical plate 147 which are arranged opposite to each other and are used to connect the fourth connecting plate 142 and the fifth connecting plate 143, and at the same time, the first vertical plate 144 and the third vertical plate 146 are aligned, and the second vertical plate 145 and the fourth vertical plate 147 are aligned. In this way, the first vertical plate 144, the third connecting plate 141, the second vertical plate 145 and the fourth connecting plate 142 form a first opening 148, and a third opening 1411 is provided on the third connecting plate 141, and the third opening 1411 is connected to the first opening 148, so that the third opening 1411 symmetrically divides the third connecting plate 141 into two halves, and the third connecting plates 141 on both sides of the third opening 1411 can be inserted into the groove of the connector 132, so as to achieve the connection between the upper fixing member 140 and the connector 132. It can be understood that the thickness of the third connecting plate 141 is smaller than the distance between the first connecting plate 1321 and the second connecting plate 1322, that is, the groove and the third connecting plate 141 are clearance-matched, so that the upper fixing member 140 can smoothly enter the groove of the connector 132.

[0097] It should be noted that the third vertical plate 146, the fourth connecting plate 142, the fourth vertical plate 147 and the fifth connecting plate 143 form a second through-hole 149, and a second U-shaped notch 1431 is provided on the fifth connecting plate 143, and the width of the second U-shaped notch 1431 is greater than the diameter of the upper connecting shaft 220, so that the upper connecting shaft 220 slides into the second U-shaped notch 1431, and the size of the connecting member 150 is greater than the width of the second U-shaped notch 1431, so the connecting member 150 is clamped on the fifth connecting plate 143 to achieve the connection between the upper connecting shaft 220 and the upper fixing member 140. It can be understood that the second U-shaped notch 1431 is provided on the fifth connecting plate 143, rather than a through-hole, and the purpose of this is to limit the upper connecting shaft 220 and avoid the separation of the upper fixing member 140 and the upper connecting shaft 220 during the installation process.

[0098] Specifically, first extend the lower gear shaft 210 and the bolt 240 into the through hole 1221 of the fixed lower plate 122, then insert the clamping plate 121 on the screw rod of the bolt 240, clamp the clamping plate 121 by the bolt 240, realize the connection between the steering wheel torque sensor 200 and the lower fixing member 120, fix the lower fixing member 120 on the bottom plate 113 by screws, then install the connecting member 150 on the upper connecting shaft 220, and clamp the connecting member 150 on the fifth connecting plate 143 and the fourth connecting plate 142, the telescopic cylinder 131 drives the connecting head 132 to be telescoped to a suitable position, so that the third connecting plates 141 at both ends of the third opening 1411 are inserted into the grooves of the connecting head 132, and then the telescopic end 1312 of the telescopic cylinder 131 is continuously retracted into the fixed end 1311, thereby forming a pulling force between the lower gear shaft 210 and the upper connecting shaft 220. When the pulling force reaches a certain level, the lower gear shaft 210 and the upper connecting shaft 220 are separated.

[0099] It should be noted that the upper fixing member 140 is an integrally formed component.

[0100] Among them, the third through hole 1411 is set on the third connecting plate 141, which can be inserted into the groove on the outer periphery of the connecting column 1323. Under the action of the second U-shaped groove 1431 and the pulling force of the stretching member 130, the movement of the upper fixing member 140 can be avoided, thereby ensuring the reliability and stability of the connection between the upper fixing member 140 and the connecting head 132. In this way, the third connecting plate 141 can be directly processed with the third through hole 1411, which can reduce the processing difficulty on the one hand, and improve the convenience of connecting the upper fixing member 140 with the connecting head 132 on the other hand.

[0101] Figure 8 is a schematic diagram of a connecting member according to an embodiment of the present invention; Fig. 9 FIG. 4 is a schematic diagram of a steering wheel torque sensor according to an embodiment of the present invention.

[0102] In a possible implementation, Figure 8 and Fig. 9 As shown, a connecting groove 221 is provided at one end of the upper connecting shaft 220 away from the lower gear shaft 210, and the connecting member 150 includes: a pair of connecting blocks 151 connected to each other, a semicircular groove 1511 is provided on the connecting block 151, an arc-shaped protrusion 1512 is provided in the semicircular groove 1511, the axis of the arc-shaped protrusion 1512 coincides with the axis of the semicircular groove 1511, the arc-shaped protrusion 1512 matches the shape of the connecting groove 221, and the semicircular groove 1511 matches the upper connecting shaft 220;

[0103] It should be noted that one of the connection blocks 151 is provided with a bolt through hole, and the other connection block 151 is provided with a bolt blind hole, the bolt through hole and the bolt blind hole are arranged correspondingly, and the connection member 150 is connected to the upper fixing member 140 .

[0104] In this embodiment, the upper connecting shaft 220 is provided with an annular connecting groove 221, which is convenient for connecting with certain components of the steering wheel, and the connecting member 150 is arranged according to the connecting groove 221. The connecting member 150 includes a pair of connecting blocks 151, and the pair of connecting blocks 151 are sleeved on the upper connecting shaft 220, so that each connecting block 151 is provided with a semicircular groove 1511, and the two semicircular grooves 1511 form a circular ring sleeved on the upper connecting shaft 220. In order to ensure the contact area between the connecting member 150 and the upper connecting shaft 220, and thus improve the reliability of the connection between the connecting member 150 and the upper connecting shaft 220, an arc-shaped protrusion 1512 is provided on the semicircular groove 1511. The shape of the arc-shaped protrusion 1512 matches the shape of the connecting groove 221. At the same time, the axis of the arc-shaped protrusion 1512 coincides with the axis of the semicircular groove 1511. The two arc-shaped protrusions 1512 form an annular protrusion, which is stuck in the connecting groove 221. A pair of connecting blocks 151 are fixedly connected by connecting bolts 152, thereby improving the stability and reliability of the connection between the connecting member 150 and the upper connecting shaft 220.

[0105] For example, Fig.10a As shown, some upper connecting shafts 220 do not have connecting grooves. In this case, the connecting member 150 is provided with a connecting through hole 154, which can be sleeved on the upper connecting shaft 220. The connecting member 150 is provided with an opening 155, which is connected to the connecting through hole 154. The height direction of the opening 155 ( Fig.10aThe inside and outside direction of the connecting member 150 is the same as the axial direction of the upper connecting shaft 220. A connecting bolt 152 passes through the opening 155. The nut 153 is tightened on the connecting bolt 152 to drive the opening 155 to become smaller, thereby causing the connecting through hole 154 to gradually shrink and clamp the upper connecting shaft 220. At this time, if the size of the connecting member 150 is larger than the size of the second U-shaped notch 1431, it can be directly connected to the fifth connecting plate 143 through the connecting member. If the size of the connecting member 150 matches the second U-shaped notch 1431, a boss can be set on the outside of the connecting member, and the connecting member 150 can be connected to the fifth connecting plate 143 through the boss and the connecting bolt 152.

[0106] For example, a torsion bar is provided inside the upper connecting shaft 220, and the torsion bar and the lower gear shaft 210 are also mechanically tightly matched by cold pressing. The disassembly device 100 of the present application can also realize the disassembly of the torsion bar. Fig.10b As shown, the torsion bar is also provided with a connection groove, and the connecting member 150 is provided with a connection through hole 154 and an opening 155, the connection through hole 154 is arranged at the center of the connecting member 150, the opening 155 is communicated with the connection through hole 154, and the connection through hole 154 is provided with an arc-shaped protrusion 1512, the torsion bar enters into the connection through hole 154 through the opening 155, and is engaged in the connection groove through the arc-shaped protrusion 1512, so as to realize the engagement between the connecting member 150 and the torsion bar. Generally, the size of the connecting member 150 in this embodiment is larger than the size of the second U-shaped notch, so the connecting member 150 can be directly engaged with the fifth connecting plate 143.

[0107] It can be understood that by changing the form of the connecting piece, the components on the steering wheel torque sensor can be disassembled, the disassembly efficiency can be improved, and multiple disassembly can be achieved through one disassembly device, thereby reducing the disassembly cost.

[0108] In the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0109] Those skilled in the art will readily appreciate other embodiments of the present invention after considering the specification and practicing the invention disclosed herein. The present invention is intended to cover any variations, uses or adaptations of the present invention that follow the general principles of the present invention and include common knowledge or customary techniques in the art that are not disclosed by the present invention. The description and examples are to be considered exemplary only.

[0110] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A disassembly device for a steering wheel torque sensor, the steering wheel torque sensor comprising a lower gear shaft and an upper connecting shaft crimped together, a sensor sleeved on the lower gear shaft, characterized in that: The disassembling device comprises: Support frame; A lower fixing member, used to fix the lower gear shaft, the lower fixing member being fixedly connected to the support frame; A connecting member, fixedly connected to the upper connecting shaft; An upper fixing member, clamped with the connecting member; A stretching member is fixed on the support frame, and the stretching member is arranged opposite to the lower fixing member, the upper fixing member is connected to the stretching member, and the stretching member sequentially drives the upper fixing member, the connecting member and the upper connecting member to move in a direction away from the lower gear shaft.

2. The disassembling device for a steering wheel torque sensor according to claim 1, characterized in that: The support frame includes: a top plate and a bottom plate, and a plurality of columns arranged between the top plate and the bottom plate, the stretching member is fixedly connected to the top plate, and the lower fixing member is fixedly connected to the bottom plate.

3. The disassembling device for a steering wheel torque sensor according to claim 1, characterized in that: A threaded hole is provided on the side of the lower gear shaft away from the upper connecting shaft, a bolt is provided in the threaded hole, the bolt includes a head and a screw rod, and the lower fixing member includes: A clamping plate, which is sleeved on the screw rod and is located between the head and the lower gear shaft; The fixed lower plate is sleeved on the lower gear shaft, and the clamping plate is located on a side of the fixed lower plate away from the stretching member, and the fixed lower plate is fixedly connected to the support frame.

4. The disassembling device for a steering wheel torque sensor according to claim 3, characterized in that: The clamping plate is provided with a first U-shaped notch, the screw rod is located in the first U-shaped notch, and the width of the first U-shaped notch is greater than the diameter of the screw rod and smaller than the diameter of the head.

5. The disassembling device for a steering wheel torque sensor according to claim 4, characterized in that: The fixed lower plate is provided with a through hole, the lower gear shaft passes through the through hole, the fixed lower plate is provided with an open slot, the open slot and the support frame form a receiving space, and the receiving space is used to receive the clamping plate and the bolt; Wherein, the diameter of the through hole is larger than the diameter of the head and the diameter of the lower gear shaft, and the diameter of the through hole is smaller than the size of the clamping plate.

6. The disassembling device for a steering wheel torque sensor according to claim 1, characterized in that: The stretching member comprises: A telescopic cylinder, comprising a fixed end and a telescopic end, wherein the fixed end is fixedly connected to the support frame, and the telescopic end can move toward or away from the lower fixing member; A connecting head is arranged on a side of the telescopic end facing the lower fixing member, and the connecting head is connected to the upper fixing member.

7. The disassembling device for a steering wheel torque sensor according to claim 6, characterized in that: The connector comprises: a first connecting plate; a second connecting plate, the second connecting plate being arranged opposite to the first connecting plate; A connecting column is arranged between the first connecting plate and the second connecting plate, the diameter of the connecting column is smaller than the size of the first connecting plate and the second connecting plate, the first connecting plate, the connecting column and the second connecting plate form a groove, and the upper fixing piece is arranged in the groove.

8. The disassembling device for a steering wheel torque sensor according to claim 7, characterized in that: The upper fixing member includes an upper connecting portion and a lower connecting portion, wherein the upper connecting portion is connected to the connecting head, and the lower connecting portion is connected to the connecting member.

9. The disassembling device for a steering wheel torque sensor according to claim 8, characterized in that: The upper connecting portion includes a third connecting plate and a fourth connecting plate arranged opposite to each other, a first vertical plate and a second vertical plate used to connect the third connecting plate and the fourth connecting plate, the first vertical plate, the third connecting plate, the fourth connecting plate and the second vertical plate form a first through opening, the third connecting plate is provided with a third through opening, the third through opening is communicated with the first through opening, and at least part of the connecting head is located in the first through opening and the third through opening; The lower connecting part includes a fifth connecting plate, which is located on the side of the fourth connecting plate away from the third connecting plate. The fourth connecting plate and the fifth connecting plate are connected by a third vertical plate and a fourth vertical plate. The third vertical plate, the fourth connecting plate, the fifth connecting plate and the fourth vertical plate form a second through opening. A second U-shaped groove is provided on the fifth connecting plate. The second U-shaped groove is connected with the second through opening. The connecting piece is located in the second through opening. The upper connecting shaft is located in the second U-shaped groove.

10. The disassembling device for a steering wheel torque sensor according to claim 1, characterized in that: A connecting groove is provided at one end of the upper connecting shaft away from the lower gear shaft, and the connecting member comprises: a pair of connecting blocks connected to each other, a semicircular groove is provided on the connecting block, an arc-shaped protrusion is provided in the semicircular groove, the axis of the arc-shaped protrusion coincides with the axis of the semicircular groove, the arc-shaped protrusion matches the shape of the connecting groove, and the semicircular groove matches the upper connecting shaft; One of the connecting blocks is provided with a bolt through hole, and the other connecting block is provided with a bolt blind hole. The bolt through hole and the bolt blind hole are arranged correspondingly, and the connecting piece is connected to the upper fixing piece.

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