Fixing device

Abstract

The utility model discloses a fixing device, which is used for fixing an annular piece, and comprises a bottom plate, a plurality of sliding chutes, a plurality of fixing parts, a plurality of fixing parts, a plurality of fixing parts, a plurality of fixing parts, a plurality of fixing parts and a plurality of fixing parts, and is characterized in that the bottom plate is provided with a plurality of sliding chutes; the supporting piece extends in the height direction, the lower end of the supporting piece is connected with the bottom plate, the height direction is perpendicular to the radial direction, and the supporting piece is circumferentially surrounded; the sliding block is arranged outside the supporting piece in a sleeving mode, and the sliding block is movably connected with the supporting piece in the height direction; the plurality of connecting pieces are arranged at intervals in the circumferential direction; one end of each connecting piece is rotationally connected with the corresponding sliding block; the multiple abutting pieces are in one-to-one correspondence with the multiple connecting pieces and the multiple sliding grooves, and each abutting piece is rotationally connected with the other end of the corresponding connecting piece; each abutting piece is connected with the corresponding sliding groove in a sliding mode. The abutting piece is used for abutting against the inner wall of the annular piece. The magnetic encoder fixing device can be suitable for fixing various magnetic encoders with different specifications, so that the cost is effectively saved, and the project requirement is quickly responded.

Description

TECHNICAL FIELD

[0001] The utility model relates to sensor technical field, especially a fixing device. BACKGROUND

[0002] When developing a new wheel speed sensor, it is necessary to check whether the distance between the magnetic encoder and the sensor sensing surface meets the design requirements according to the host factory real vehicle magnetic encoder. In this stage, the host factory needs to provide a magnetic encoder for calibrating the air gap range that the sensor can read. Since the magnetic encoders used by different host factories differ in diameter and other aspects, it is necessary to process tooling for the magnetic encoders provided by different host factories to install them on the motor to simulate the rotation of the real vehicle wheel and calibrate the sensor reading capability. For sensor manufacturers, it is necessary to customize tooling for different specifications of magnetic encoders provided by different host factories, which is costly. For new magnetic encoder project development, the processing and customization of tooling takes a long time and cannot quickly respond to project requirements. SUMMARY

[0003] The utility model discloses a fixing device, which can be used to fix magnetic encoders of multiple different specifications, thereby effectively saving costs and quickly responding to project requirements.

[0004] To solve the above technical problems, the embodiment of the utility model discloses a fixing device for fixing an annular member, which comprises a bottom plate provided with a plurality of sliding grooves, the plurality of sliding grooves are arranged at intervals in the circumferential direction, and each sliding groove extends in the radial direction; a support member extends in the height direction, and the lower end of the support member is connected to the bottom plate; the height direction is perpendicular to the radial direction, and the circumferential direction surrounds the support member; a sliding block is sleeved outside the support member, and the sliding block is movably connected to the support member in the height direction; a plurality of connecting members are arranged at intervals in the circumferential direction; one end of each connecting member is rotatably connected to the sliding block; a plurality of abutting members correspond to the plurality of connecting members and the plurality of sliding grooves one by one, and each abutting member is rotatably connected to the other end of the corresponding connecting member; each abutting member is slidably connected to the corresponding sliding groove; and the abutting member is used to abut against the inner wall of the annular member.

[0005] Adopting the technical scheme, firstly, it is confirmed whether the inner diameter of the magnetic encoder (i.e. the annular member) is greater than the radial dimension of the circular region surrounded by the plurality of abutting members at this time, if the inner diameter of the magnetic encoder is less than or equal to the radial dimension of the circular region surrounded by the plurality of abutting members at this time, the slider is moved upwards until the radial dimension of the circular region surrounded by the plurality of abutting members at this time is less than the inner diameter of the magnetic encoder. Then the magnetic encoder is arranged above the bottom plate and is sleeved on the support member, and then the slider is moved along the height direction and towards the bottom plate, as the slider slides downwards on the support member, the connecting member connected with the slider rotates, during the rotation of the connecting member, the abutting members slide outwards on the sliding groove synchronously, the plurality of abutting members slide outwards towards the bottom plate synchronously, the radial dimension of the circular region surrounded by the plurality of abutting members gradually increases until the plurality of abutting members abut against the inner wall of the magnetic encoder, and the inner wall of the magnetic encoder limits the abutting members from moving further, thereby forming the clamping and fixing of the magnetic encoder by the abutting members.

[0006] In conclusion, the abutting members of the application can be adjusted in position by the up-down movement of the slider, the distance between the support member and the abutting members corresponds to the radius (i.e. half of the inner diameter) of the inner ring of the magnetic encoder, the distance between the abutting members and the support member changes as the slider slides, corresponding to the magnetic encoders with different radii, thereby meeting the requirement of fixing the magnetic encoders with different radii by the fixing device, and it is not necessary to customize tooling for the magnetic encoders with different specifications of different host manufacturers, thereby effectively reducing the cost; and the project requirements can be quickly responded to when developing new magnetic encoder projects.

[0007] According to another specific embodiment of the application, the driving assembly comprises: a nut, which is sleeved outside the support member and is threadedly connected with the support member; and a sleeve, which is sleeved outside the support member and is located below the nut and above the slider along the height direction; the nut is used to drive the sleeve to move along the height direction.

[0008] Adopting the technical scheme, the nut is rotated, the nut moves downwards on the support member, the movement of the nut drives the sleeve located below the nut to move synchronously, the sleeve in turn presses the slider below the sleeve to move downwards synchronously, thereby driving the connecting member to rotate and the abutting members to slide until the abutting members abut against the inner wall of the magnetic encoder.

[0009] According to another specific embodiment of the application, the fixing device further comprises a slide pin, the slide pin is connected with the abutting member, and the slide pin is used to slide along the radial direction in the sliding groove.

[0010] According to another specific embodiment of the application, the abutting member is provided with a mounting hole, a part of the slide pin extends into the mounting hole and is threadedly connected with the mounting hole.

[0011] According to another specific embodiment of the utility model, the lower surface of the abutting piece abuts against the upper surface of the bottom plate; the bottom of the slide pin is provided with a stop portion, the stop portion abuts against the lower surface of the bottom plate to limit the movement of the slide pin along the height direction.

[0012] By the above technical scheme, the stop portion abuts against the lower surface of the bottom plate, thereby avoiding the disengagement of the slide pin from the slide groove during the upward movement of the slide block.

[0013] According to another specific embodiment of the utility model, the abutting piece comprises an arc surface, and the arc surface is used for abutting against the inner wall of the annular piece.

[0014] By the above technical scheme, the arc surface makes the abutting piece abut against the inner wall of the magnetic encoder more closely, and the contact area is larger. On the other hand, the arc surface is smoother, and damage to the magnetic encoder during abutting can be avoided.

[0015] According to another specific embodiment of the utility model, further comprising: a plurality of first mounting pieces, a plurality of second mounting pieces, a plurality of first connecting shafts and a plurality of second connecting shafts; wherein the plurality of first mounting pieces correspond to the plurality of connecting pieces and the plurality of first connecting shafts one by one, and the plurality of first mounting pieces are fixedly connected with the slide blocks; each first mounting piece comprises a first mounting space, and each first mounting piece is provided with a first through hole penetrating the first mounting space; one end of each connecting piece extends into the first mounting space of the first mounting piece corresponding thereto, and the connecting piece is provided with a first connecting hole; the first connecting shaft penetrates the first through hole and the first connecting hole to rotatably connect the first mounting piece and the connecting piece; the plurality of second mounting pieces correspond to the plurality of connecting pieces and the plurality of second connecting shafts one by one, and the plurality of second mounting pieces are fixedly connected with the abutting pieces; each second mounting piece comprises a second mounting space, and each second mounting piece is provided with a second through hole penetrating the second mounting space; the other end of each connecting piece extends into the second mounting space of the second mounting piece corresponding thereto, and the connecting piece is provided with a second connecting hole; the second connecting shaft penetrates the second through hole and the second connecting hole to rotatably connect the second mounting piece and the connecting piece.

[0016] By the above technical scheme, the first connecting shaft rotatably connects the connecting piece and the first mounting piece, i.e. the connecting piece and the slide block, and the connecting piece can rotate relative to the slide block about the first connecting shaft. The second connecting shaft rotatably connects the connecting piece and the second mounting piece, i.e. the connecting piece and the abutting piece, and the connecting piece can rotate relative to the abutting piece about the second connecting shaft.

[0017] According to another specific embodiment of the utility model, each first connecting shaft includes two first extension ends, the two first extension ends are located outside the first mounting space, and the two first extension ends are respectively located on two sides of the first mounting piece, the two first extension ends are each provided with a first limiting piece, the first limiting piece is used for abutting against the first mounting piece along the axial direction of the first connecting shaft to limit movement of the first connecting shaft in the first through hole, and each second connecting shaft includes two second extension ends, the two second extension ends are located outside the second mounting space, and the two second extension ends are respectively located on two sides of the second mounting piece, the two second extension ends are each provided with a second limiting piece, and the second limiting piece is used for abutting against the second mounting piece along the axial direction of the second connecting shaft to limit movement of the second connecting shaft in the second through hole.

[0018] The first limiting piece is used for abutting against the first mounting piece along the axial direction of the first connecting shaft to limit movement of the first connecting shaft in the first through hole, thereby avoiding disengagement of the first connecting shaft from the first through hole.

[0019] According to another specific embodiment of the utility model, the first connecting part is located below the bottom plate, the first connecting part is provided with a first center hole, the bottom plate is provided with a second center hole for the support piece to pass through, the second center hole and the first center hole are communicated, the bottom of the support piece is provided with a limiting part, the limiting part is located in the first center hole, the limiting part is used for abutting against the lower surface of the bottom plate to limit upward movement of the support piece along the height direction, the second connecting part is located below the first connecting part, and a part of the second connecting part is embedded in the first center hole of the first connecting part, the second connecting part is used for abutting against the limiting part to limit downward movement of the support piece along the height direction, and the first fixing piece fixedly connects the second connecting part, the first connecting part and the bottom plate.

[0020] The limiting part can abut against the lower surface of the bottom plate to limit upward movement of the support piece along the height direction, thereby avoiding upward disengagement of the support piece from the bottom plate.

[0021] According to another specific embodiment of the utility model, the first connecting part is provided with a plurality of avoidance grooves extending along the radial direction, the plurality of avoidance grooves correspond to the plurality of sliding grooves one by one, and are oppositely arranged along the height direction.

[0022] With the technical scheme, the avoiding groove is arranged at the first connecting part and is arranged opposite to the sliding groove in the height direction, so that the first connecting part is prevented from being attached to the bottom plate, the first connecting part is prevented from shielding the sliding groove on the bottom plate, and the sliding of the sliding nail in the sliding groove is prevented from being affected. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A perspective view of the fixing device according to an embodiment of the present application is shown Figure 1 ;

[0024] Figure 2 A perspective view of the fixing device according to an embodiment of the present application is shown

[0025] Figure 3 A partial sectional view of the fixing device according to an embodiment of the present application is shown

[0026] Figure 4 A perspective view of the abutting piece and the sliding nail according to an embodiment of the present application is shown

[0027] Figure 5 A partial enlarged view of the A area in FIG. 6 is shown Figure 1

[0028] A perspective view of the first mounting piece according to an embodiment of the present application is shown Figure 6

[0029] A perspective view of the connecting piece according to an embodiment of the present application is shown Figure 7

[0030] A perspective view of the first connecting shaft and the first limiting piece according to an embodiment of the present application is shown Figure 8

[0031] A partial enlarged view of the B area in FIG. 7 is shown Figure 9 Figure 1 A perspective view of the second mounting piece according to an embodiment of the present application is shown

[0032] Figure 10 A perspective view of the fixing device according to an embodiment of the present application is shown

[0033] . Figure 11 DETAILED DESCRIPTION Figure 2

[0034] ​​The following describes the embodiments of the present application by specific examples, and other advantages and effects of the present application can be easily understood by those skilled in the art according to the disclosure. Although the description of the present application is introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications which can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0035] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0036] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0037] The terms "first", "second", and the like are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.

[0039] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0040] Reference Figure 1 and Figure 2The fixing device 10 is used for fixing an annular member. Those skilled in the art can understand that the fixing device 10 can be used for fixing various annular members, such as fixing a metal gear ring encoder, a magnetic encoder, and a tire in the field of automobile parts, etc. The fixing device 10 is only used for fixing the magnetic encoder 20 as an example.

[0041] As shown in Figure 1 and Figure 2 , the fixing device 10 comprises a bottom plate 40, a support 50, a sliding block 60, a plurality of connecting pieces 70 and a plurality of abutting pieces 80. The bottom plate 40 is provided with a plurality of sliding grooves 400, and the plurality of sliding grooves 400 are arranged at intervals in the circumferential direction R and each extends along the radial direction X. That is, the extension directions of the plurality of sliding grooves 400 have a common intersection, which constitutes the center of the circular area surrounded by the plurality of sliding grooves 400. Exemplarily, the bottom plate 40 is circular, the plurality of sliding grooves 400 are arranged at intervals in the circumferential direction R of the bottom plate 40, and the plurality of sliding grooves 400 extend along the radial direction X of the bottom plate 40.

[0042] The support 50 extends along the height direction Z, the lower end of the support 50 is connected to the bottom plate 40, the height direction Z is perpendicular to the radial direction X, and the circumferential direction R surrounds the support 50.

[0043] Exemplarily, the support 50 is in the shape of a cylinder, and the lower end of the support 50 is connected to the center of the bottom plate 40, so that the bottom plate 40 and the support 50 are coaxial, thereby ensuring the balance of the fixing device 10 as a whole. It should be noted that, in this embodiment, since the bottom plate 40 and the support 50 are coaxial, the circumferential directions of the bottom plate 40 and the support 50 are the same, that is, the circumferential direction R mentioned above and below.

[0044] The sliding block 60 is sleeved on the support 50, and the sliding block 60 is movably connected to the support 50 along the height direction Z.

[0045] The plurality of connecting pieces 70 are arranged at intervals in the circumferential direction R, and one end of each connecting piece 70 is rotatably connected to the sliding block 60.

[0046] The plurality of abutting pieces 80 correspond to the plurality of connecting pieces 70 and the plurality of sliding grooves 400 one by one, and each abutting piece 80 is rotatably connected to the other end of the corresponding connecting piece 70. Each abutting piece 80 is slidably connected to the corresponding sliding groove 400, and the abutting piece 80 is used for abutting against the inner wall of the magnetic encoder 20.

[0047] Exemplarily, as the slider 60 slides downward along the height direction Z on the support 50, the connecting piece 70 connected therewith rotates, the included angle between the connecting piece 70 and the support 50 gradually increases, and the included angle between the connecting piece 70 and the bottom plate 40 gradually decreases. During the rotation of the connecting piece 70, the abutting piece 80 synchronously slides outward on the sliding groove 400 towards the bottom plate 40, that is, the downward movement of the slider 60 causes the rotation of the connecting piece 70, and the rotation of the connecting piece 70 causes the sliding of the abutting piece 80. The plurality of abutting pieces 80 synchronously slide outward towards the bottom plate 40, and each abutting piece 80 is farther and farther away from the support 50, so that the radial dimension of the circular area surrounded by the plurality of abutting pieces 80 gradually increases, until the plurality of abutting pieces 80 abut against the inner wall of the magnetic encoder 20. At this time, the distance from the abutting piece 80 to the center of the bottom plate 40 (that is, the central axis of the support 50) corresponds to the radius (half of the inner diameter) of the magnetic encoder 20, and the inner wall of the magnetic encoder 20 limits the further movement of the abutting piece 80, thereby forming the clamping and fixing of the magnetic encoder 20 by the abutting piece 80.

[0048] Exemplarily, the cross section of the abutting piece 80 is semicircular, and the arc surface 800 thereof abuts against the inner wall of the magnetic encoder 20. The arc surface 800 makes the abutting piece 80 abut against the inner wall of the magnetic encoder 20 more closely, and the contact area is larger. On the other hand, the arc surface 800 is smoother, which can avoid damage to the magnetic encoder 20 during abutting.

[0049] In the embodiment, three sliding grooves 400, three connecting pieces 70 and three abutting pieces 80 are provided, and any two adjacent sliding grooves 400 among the three sliding grooves 400 are arranged at an interval of 120° in the circumferential direction R. Correspondingly, any two adjacent abutting pieces 80 among the three abutting pieces 80 are arranged at an interval of 120° in the circumferential direction R, and any two adjacent connecting pieces 70 among the three connecting pieces 70 are arranged at an interval of 120° in the circumferential direction R. Those skilled in the art can understand that in other embodiments, other numbers of sliding grooves 400, and corresponding connecting pieces 70 and abutting pieces 80 can also be provided, for example, 4, 5, etc. Further, the plurality of sliding grooves 400 can also be arranged at unequal intervals in the circumferential direction R, the plurality of connecting pieces 70 corresponding thereto can also be arranged at unequal intervals in the circumferential direction R, and the plurality of abutting pieces 80 can also be arranged at unequal intervals in the circumferential direction R, as long as the number and position of the sliding grooves 400, the connecting pieces 70 and the abutting pieces 80 are one-to-one corresponding.

[0050] With the above technical solution, the staff first needs to confirm whether the inner diameter of the magnetic encoder 20 is greater than the radial size of the circular area surrounded by the plurality of abutting pieces 80 at this time. If the inner diameter of the magnetic encoder 20 is less than or equal to the radial size of the circular area surrounded by the plurality of abutting pieces 80 at this time, the slider 60 is moved upwards (for example, manually pulled) until the radial size of the circular area surrounded by the plurality of abutting pieces 80 at this time is less than the inner diameter of the magnetic encoder 20.

[0051] The magnetic encoder 20 is placed above the bottom plate 40, and the magnetic encoder 20 is sleeved on the support 50. Then the slider 60 moves along the height direction Z and towards the direction of the bottom plate 40. As the slider 60 slides downward on the support 50, the connecting piece 70 connected thereto rotates. During the rotation of the connecting piece 70, the abutting piece 80 slides synchronously outward on the sliding groove 400 towards the bottom plate 40. The plurality of abutting pieces 80 synchronously slide outward towards the bottom plate 40, and the radial size of the circular area surrounded by the plurality of abutting pieces 80 gradually increases until the plurality of abutting pieces 80 abut against the inner wall of the magnetic encoder 20. The inner wall of the magnetic encoder 20 limits the further movement of the abutting piece 80, thereby forming the clamping and fixing of the magnetic encoder 20 by the abutting piece 80.

[0052] It is easy to understand that when the radius of the inner ring of the magnetic encoder 20 is less than or equal to the distance between the abutting piece 80 and the support 50, the abutting piece 80 cannot abut against the inner wall of the magnetic encoder 20 by moving the slider 60 downward. Therefore, the slider 60 can be moved upwards (for example, manually pulled) first to make the distance between the abutting piece 80 and the support 50 less than the radius of the magnetic encoder 20, and then the slider 60 can be moved downward as described above until the abutting piece 80 abuts against the inner wall of the magnetic encoder 20.

[0053] In summary, the abutting piece 80 of the present application can adjust the position by moving the slider 60 up and down. The distance between the abutting piece 80 and the support 50 corresponds to the radius of the inner ring of the magnetic encoder 20. The movement of the slider 60 changes the distance between the abutting piece 80 and the support 50, which corresponds to the magnetic encoder 20 with different radii. Therefore, the fixing device 10 can meet the needs of fixing magnetic encoders 20 with different radii. It is not necessary to customize tooling for different specifications of magnetic encoders 20 from different host manufacturers, thereby effectively reducing costs. For new magnetic encoder project development, it can also quickly respond to project requirements.

[0054] Reference Figure 1 and Figure 3 In some possible embodiments, the fixing device 10 further includes a driving assembly 90, and the driving assembly 90 includes a nut 91 and a sleeve 92. The nut 91 is sleeved outside the support 50 and is threadedly connected with the support 50. That is, rotating the nut 91 moves the nut 91 up and down on the support 50.

[0055] The sleeve 92 is sleeved outside the support 50, and is located below the nut 91 and above the sliding block 60 in the height direction Z. The nut 91 is used to drive the sleeve 92 to move in the height direction Z. For example, the nut 91 is rotated, the nut 91 moves downward on the support 50, the cross-sectional area of the nut 91 is greater than that of the sleeve 92, the nut 91 moves to drive the sleeve 92 located below the nut 91 to move synchronously, and the cross-sectional area of the sliding block 60 is greater than that of the sleeve 92, so that the sleeve 92 inevitably contacts the sliding block 60, thereby the sleeve 92 presses the sliding block 60 below the sleeve 92 to move synchronously downward, and the connecting piece 70 rotates, the abutting piece 80 slides, and the abutting piece 80 abuts against the inner wall of the magnetic encoder 20.

[0056] For example, as shown in Figure 3 The support 50 includes a threaded portion 501 and an optical axis portion 502. The threaded portion 501 extends downward from the top of the support 50 to a certain distance, the nut 91 is connected to the threaded portion 501 of the support 50, and the nut 91 moves on the threaded portion 501 of the support 50. In the initial state (i.e., the nut 91 is at the upper end of the support 50 and has not been rotated), the sliding block 60 is sleeved on the optical axis portion 502 of the support 50, and a part of the sleeve 92 is sleeved outside the optical axis portion 502 and another part is sleeved outside the threaded portion 501.

[0057] Those skilled in the art can understand that in other embodiments, other driving assemblies 90 can also be selected to drive the sliding block 60 to move downward, such as an electric push rod.

[0058] Referring to Figure 1 and Figure 4 In some possible implementation manners, the fixing device 10 further includes a sliding pin 100, the sliding pin 100 is connected to the abutting piece 80, and the sliding pin 100 is used to slide in the sliding groove 400 in the radial direction X of the support 50.

[0059] In some possible implementation manners, the abutting piece 80 is provided with a mounting hole 801, the inner wall of the mounting hole 801 is provided with threads, a part of the sliding pin 100 extends into the mounting hole 801 and is connected to the mounting hole 801 in a threaded manner.

[0060] In some possible implementation manners, the lower surface of the abutting piece 80 abuts against the upper surface of the bottom plate 40, and the bottom of the sliding pin 100 is provided with a stop portion 101, the stop portion 101 abuts against the lower surface of the bottom plate 40 to limit the movement of the sliding pin 100 in the height direction Z. For example, the sliding pin 100 and the stop portion 101 are both in a cylindrical shape, and the cross-sectional area of the stop portion 101 is greater than that of the sliding groove 400 in the radial direction X of the bottom plate 40, that is, the stop portion 101 abuts against the lower surface of the bottom plate 40, thereby avoiding the disengagement of the sliding pin 100 from the sliding groove 400 in the process of moving the sliding block 60 upward.

[0061] like Figure 1 As shown, in some possible embodiments, the fixing device 10 further includes a plurality of first mounting members 110, a plurality of second mounting members 120, a plurality of first connecting shafts 130 and a plurality of second connecting shafts 140.

[0062] In this configuration, multiple first mounting members 110 correspond one-to-one with multiple connecting members 70, and one end of each first mounting member 110 and its corresponding connecting member 70 is rotatably connected. All first mounting members 110 are fixedly connected to the slider 60. Similarly, multiple second mounting members 120 correspond one-to-one with multiple connecting members 70, and the other end of each second mounting member 120 and its corresponding connecting member 70 is rotatably connected. Each second mounting member 120 is fixedly connected to its corresponding abutment member 80. That is, each connecting member 70 has a first mounting member 110 and a second mounting member 120 at both ends, so that the first mounting member 110 connects to the slider 60, and the second mounting member 120 connects to the abutment member 80.

[0063] For example, the first mounting member 110 and the second mounting member 120 have the same structure and are both U-shaped.

[0064] Specifically, refer to Figure 1 , Figure 5 to Figure 7 Each of the multiple first mounting components 110 corresponds one-to-one with a multiple first connecting shafts 130. Each first mounting component 110 includes a first mounting space 111, and each first mounting component 110 has a first through hole 112 penetrating through the first mounting space 111. One end of the connector 70 extends into the first mounting space 111, and the connector 70 has a first connecting hole 700. The first connecting shaft 130 passes through the first through hole 112 and the first connecting hole 700 to rotatably connect the first mounting component 110 and the connector 70. That is, the first connecting shaft 130 realizes the rotatable connection between the connector 70 and the first mounting component 110, which is also the rotatable connection between the connector 70 and the slider 60. The connector 70 can rotate relative to the slider 60 around the first connecting shaft 130.

[0065] For example, such as Figure 6As shown, the first mounting member 110 comprises a first connecting plate 113, a second connecting plate 114 and a third connecting plate 115 connected in sequence, wherein the second connecting plate 114 is connected with the slider 60 by bolts, and the first connecting plate 113 and the third connecting plate 115 are both connected with the second connecting plate 114 perpendicularly, and the first connecting plate 113 and the third connecting plate 115 are spaced apart, so as to form a first mounting space 111 between the first connecting plate 113 and the third connecting plate 115 for one end of the connecting member 70 to extend into, and the first connecting shaft 130 passes through the first through hole 112 provided on the first mounting member 110 and the first connecting hole 700 of the connecting member 70, so as to realize the rotary connection of the connecting member 70 and the first mounting member 110, that is, the rotary connection of the connecting member 70 and the slider 60.

[0066] In the embodiment, the slider 60 is substantially cylindrical, and in order to facilitate the fixed connection of the slider 60 and the second connecting plate 114 of the first mounting member 110, a plurality of planes 600 are provided on the outer wall of the slider 60, so as to adapt to the surface of the second connecting plate 114, thereby improving the stability and reliability of the connection of the slider 60 and the first mounting member 110.

[0067] Further, as shown in Figure 1 , Figure 5 and Figure 8 , the first connecting shaft 130 comprises two first extending ends 133, both of which are located outside the first mounting space 111 and are respectively located at two sides of the first mounting member 110, and both of which are provided with a first limiting member 150 for abutting against the first mounting member 110 along the axial direction of the first connecting shaft 130, so as to limit the movement of the first connecting shaft 130 in the first through hole 112.

[0068] Exemplarily, referring to Figure 5 and Figure 8 , the two first extending ends 133 are respectively located at the outer wall of the first connecting shaft 130 and are close to the two end portions, and both of which are respectively provided with a first limiting hole 131, both of which are located outside the first mounting space 111 and correspond to the two first limiting members 150 one by one; the first limiting member 150 is inserted into the corresponding first limiting hole 131 along the radial direction of the first connecting shaft 130 and partially extends out of the first limiting hole 131, so as to abut against the first mounting member 110, so as to limit the movement of the first connecting shaft 130 in the first through hole 112.

[0069] Specifically, in the embodiment, the first limiting member 150 is in Y shape, which comprises a first blocking part 151, an insertion part 152 and a second blocking part 153 connected in sequence, wherein the insertion part 152 is used to be inserted into the first limiting hole 131, and the first blocking part 151 and the second blocking part 153 are exposed from the first limiting hole 131 and can abut against the first mounting member 110 to limit the movement of the first connecting shaft 130 in the first through hole 112. While the two first limiting members 150 are respectively inserted into the first limiting holes 131 on the corresponding first connecting shaft 130, that is, the two first limiting members 150 are respectively limited at the two ends of the first connecting shaft 130 in the axial direction, the two first limiting members 150 can respectively abut against the first connecting plate 113 and the third connecting plate 115 of the first mounting member 110, thereby limiting the movement of the first connecting shaft 130 in the first through hole 112 to avoid the first connecting shaft 130 from being separated from the first through hole 112.

[0070] Referring to Figure 1 , Figure 7 , Figure 9 and Figure 10 , the plurality of second mounting members 120 correspond to the plurality of second connecting shafts 140 one by one. Each second mounting member 120 comprises a second mounting space 121, and each second mounting member 120 is provided with a second through hole 122 penetrating the second mounting space 121; the other end of the connecting member 70 extends into the second mounting space 121, and the connecting member 70 is provided with a second connecting hole 701; the second connecting shaft 140 penetrates the second through hole 122 and the second connecting hole 701 to rotationally connect the second mounting member 120 and the connecting member 70. That is, the second connecting shaft 140 realizes the rotational connection of the connecting member 70 and the second mounting member 120, that is, the rotational connection of the connecting member 70 and the abutting member 80, and the connecting member 70 can rotate relative to the abutting member 80 about the second connecting shaft 140.

[0071] As shown in Figure 9 and Figure 10 , the same as the first mounting member 110, the second mounting member 120 comprises a fourth connecting plate 123, a fifth connecting plate 124 and a sixth connecting plate 125 connected in sequence, wherein the fifth connecting plate 124 is connected with the abutting member 80 by bolts, and the fourth connecting plate 123 and the sixth connecting plate 125 are both connected perpendicularly with the fifth connecting plate 124, and the fourth connecting plate 123 and the sixth connecting plate 125 are spaced apart, thereby forming the second mounting space 121 between the fourth connecting plate 123 and the sixth connecting plate 125 for the other end of the connecting member 70 to extend into, and the second connecting shaft 140 penetrates the second through hole 122 provided on the second mounting member 120 and the second connecting hole 701 of the connecting member 70 to realize the rotational connection of the connecting member 70 and the second mounting member 120, that is, the rotational connection of the connecting member 70 and the abutting member 80.

[0072] In the embodiment, the abutting member 80 is in a semi-cylindrical shape, and a flat side thereof is adapted to the surface of the fifth connecting plate 124, so as to improve the stability and reliability of the connection between the abutting member 80 and the second mounting member 120.

[0073] As shown in Figure 1 , Figure 9 and Figure 10 , similarly, the second connecting shaft 140 includes two second extending ends 143, both of which are located outside the second mounting space 121 and are respectively located at two sides of the second mounting member 120, and both of which are provided with a second limiting member 160 for abutting with the second mounting member 120 along the axial direction of the second connecting shaft 140, so as to limit the movement of the second connecting shaft 140 in the second through hole 122.

[0074] Exemplarily, the two second extending ends 143 are respectively located at the positions of the outer wall of the second connecting shaft 140 close to the two ends, and both of which are respectively provided with a second limiting hole 141, both of which are located outside the second mounting space 121 and correspond to the two second limiting members 160; the second limiting member 160 is inserted into the corresponding second limiting hole 141 along the radial direction of the second connecting shaft 140 and partially extends out of the second limiting hole 141, so as to abut with the second mounting member 120, so as to limit the movement of the second connecting shaft 140 in the second through hole 122.

[0075] The two second limiting members 160 are respectively inserted into the second limiting hole 141 on the corresponding second connecting shaft 140, that is, the two second limiting members 160 are respectively limited at the two ends in the axial direction of the second connecting shaft 140, and the two second limiting members 160 can respectively abut with the fourth connecting plate 123 and the sixth connecting plate 125 of the second mounting member 120, so as to limit the movement of the second connecting shaft 140 in the second through hole 122, so as to avoid the second connecting shaft 140 from being separated from the second through hole 122.

[0076] Since the second limiting member 160 and the first limiting member 150 in the embodiment have the same structure, the connection mode of the second limiting member 160 and the second connecting shaft 140 is also the same as that of the first limiting member 150 and the first connecting shaft 130, and specific reference can be made to Figure 8 , which will not be described herein again.

[0077] In some possible embodiments, reference can be made to Figure 1 , Figure 3 and Figure 11The fixing device 10 further comprises a first connecting portion 180, a second connecting portion 190, and a first fixing member 200. The first connecting portion 180 is located below the bottom plate 40, and the first connecting portion 180 is provided with a first central hole 181. The bottom plate 40 is provided with a second central hole 401 for the support member 50 to pass through. The second central hole 401 and the first central hole 181 are in communication, and the bottom of the support member 50 is provided with a limiting portion 500, which is located in the first central hole 181. The limiting portion 500 is used to abut against the lower surface of the bottom plate 40 to limit the upward movement of the support member 50 along the height direction Z. Exemplarily, the cross-sectional area of the limiting portion 500 is greater than that of the second central hole 401, so as to avoid the upward disengagement of the support member 50 from the bottom plate 40.

[0078] Exemplarily, the first connecting portion 180 is in a cylindrical shape, and the upper surface of the first connecting portion 180 is fitted with the lower surface of the bottom plate 40. The first connecting portion 180 is coaxial with the support member 50. That is, the first connecting portion 180 is located at the center of the bottom plate 40, so as to ensure the balance of the fixing device 10 as a whole.

[0079] The second connecting portion 190 is located below the first connecting portion 180, and a part of the second connecting portion 190 is embedded in the first central hole 181 of the first connecting portion 180. The second connecting portion 190 is used to abut against the limiting portion 500 to limit the downward movement of the support member 50 along the height direction Z.

[0080] Exemplarily, the bottom of the first connecting portion 180 is further provided with a connecting groove 182, which is in communication with the first central hole 181. The cross-sectional area of the connecting groove 182 is greater than that of the first central hole 181. The second connecting portion 190 comprises a convex portion 192, a plate portion 193, and an extension portion 194 connected with each other. The convex portion 192 is embedded in the first central hole 181, the plate portion 193 is embedded in the connecting groove 182, and the extension portion 194 extends along the height direction Z. The convex portion 192 of the second connecting portion 190 is located in the first central hole 181 and below the limiting portion 500 of the support member 50, so that the convex portion 192 of the second connecting portion 190 can limit the downward movement of the support member 50 and avoid affecting the fixing of the magnetic encoder 20.

[0081] The first fixing member 200 is used to fixedly connect the second connecting portion 190, the first connecting portion 180, and the bottom plate 40. Exemplarily, the first fixing member 200 penetrates the second connecting portion 190, the first connecting portion 180, and the bottom plate 40 in sequence, so as to fixedly connect the second connecting portion 190, the first connecting portion 180, and the bottom plate 40. In this embodiment, the first fixing member 200 is a bolt.

[0082] Those skilled in the art can understand that in other embodiments, other first fixing members 200 can also be selected to fix the connection between the second connecting portion 190, the first connecting portion 180 and the bottom plate 40, such as a pin and the like.

[0083] In addition, the extension portion 194 of the second connecting portion 190 is provided with a central groove 191 extending from the bottom of the second connecting portion 190 to a certain distance in the height direction Z, the central groove 191 is used for the part of other external components (such as the motor 30) to extend into, and is connected by a second fixing member (not shown in the figure). Exemplarily, the second fixing member is a bolt.

[0084] As shown in Figure 2 and Figure 3 In the present embodiment, the external component is a motor 30, the output shaft of the motor 30 extends into the central groove 191, and the output shaft of the motor 30 is fixedly connected with the second connecting portion 190 through the second fixing member, so that the motor 30 rotates to drive the magnetic encoder 20 to rotate, simulating the rotation of the real vehicle wheel, and calibrating the reading ability of the sensor.

[0085] Those skilled in the art can understand that in other embodiments, the external component can be other components, depending on the needs in actual application.

[0086] In some possible embodiments, the first connecting portion 180 is provided with a plurality of avoiding grooves 183 extending in the radial direction thereof, the plurality of avoiding grooves 183 correspond to the plurality of sliding grooves 400 one by one and are oppositely arranged in the height direction Z. Exemplarily, the avoiding grooves 183 extending in the radial direction of the first connecting portion 180 are arranged opposite to the sliding grooves 400 in the height direction Z, so as to avoid the first connecting portion 180 from blocking the sliding grooves 400 on the bottom plate 40, which in turn affects the sliding of the sliding pin 100 in the sliding groove 400.

[0087] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is a further detailed description of the present application in conjunction with specific embodiments, and the specific implementation of the present application should not be limited to these descriptions. Those skilled in the art can make various changes in form and details, including making a number of simple derivations or substitutions, without departing from the spirit and scope of the present application.

Claims

1. A fixture for securing an annular member, comprising: The fixing device comprises: a bottom plate provided with a plurality of sliding grooves, the plurality of sliding grooves being arranged at intervals in a circumferential direction, each of the sliding grooves extending in a radial direction; a support member extending in a height direction, a lower end of the support member being connected to the bottom plate, the height direction being perpendicular to the radial direction, and the circumferential direction surrounding the support member; a sliding block sleeved outside the support member, the sliding block being movably connected to the support member in the height direction; a plurality of connecting members arranged at intervals in the circumferential direction, one end of each of the connecting members being rotatably connected to the sliding block; a plurality of abutting members corresponding to the plurality of connecting members and the plurality of sliding grooves, the other end of each of the connecting members being rotatably connected to another abutting member corresponding thereto, each of the abutting members being slidably connected to the sliding groove corresponding thereto, and the abutting member being used for abutting against an inner wall of the annular member.

2. The fixture of claim 1, wherein Further comprising a driving assembly, the driving assembly comprising: a nut sleeved outside the support member and threadedly connected to the support member; a sleeve sleeved outside the support member, the sleeve being located below the nut and above the sliding block in the height direction, and the nut being used for driving the sleeve to move in the height direction.

3. The fixture of claim 1, wherein Further comprising a sliding pin, the sliding pin being connected to the abutting member, and the sliding pin being used for sliding in the radial direction in the sliding groove.

4. The fixture of claim 3, wherein The abutting member is provided with a mounting hole, a part of the sliding pin extending into the mounting hole and being threadedly connected to the mounting hole.

5. The fixture of claim 3, wherein A lower surface of the abutting member abuts against an upper surface of the bottom plate, a bottom of the sliding pin is provided with a stop portion, the stop portion abutting against a lower surface of the bottom plate to limit the sliding pin from moving in the height direction.

6. The fixture of claim 1, wherein The abutting member comprises an arc-shaped surface used for abutting against the inner wall of the annular member.

7. The fixture of claim 1, wherein Further comprising: a plurality of first mounting members, a plurality of second mounting members, a plurality of first connecting shafts and a plurality of second connecting shafts, wherein the plurality of first mounting members correspond to the plurality of connecting members and the plurality of first connecting shafts, the plurality of first mounting members are fixedly connected to the sliding block, each of the first mounting members comprises a first mounting space, each of the first mounting members is provided with a first through hole penetrating through the first mounting space, one end of each of the connecting members extends into the first mounting space of the first mounting member corresponding thereto, and the connecting member is provided with a first connecting hole, and the first connecting shaft penetrates through the first through hole and the first connecting hole to rotatably connect the first mounting member and the connecting member; the plurality of second mounting members correspond to the plurality of connecting members and the plurality of second connecting shafts, the plurality of second mounting members are fixedly connected to the abutting member, each of the second mounting members comprises a second mounting space, each of the second mounting members is provided with a second through hole penetrating through the second mounting space, the other end of each of the connecting members extends into the second mounting space of the second mounting member corresponding thereto, and the connecting member is provided with a second connecting hole, and the second connecting shaft penetrates through the second through hole and the second connecting hole to rotatably connect the second mounting member and the connecting member.

8. The fixing device according to claim 7, wherein each of the first connecting shafts comprises two first extending ends, each of which is located outside the first mounting space and on a side of the first mounting member, and each of which is provided with a first limiting member for abutting against the first mounting member along an axial direction of the first connecting shaft to limit movement of the first connecting shaft in the first through hole. Each of the second connecting shafts comprises two second extending ends, each of which is located outside the second mounting space and on a side of the second mounting member, and each of which is provided with a second limiting member for abutting against the second mounting member along an axial direction of the second connecting shaft to limit movement of the second connecting shaft in the second through hole. Further comprising:

9. The fixture of claim 1, wherein a first connecting portion located below the bottom plate, the first connecting portion being provided with a first central hole; the bottom plate being provided with a second central hole for the support member to pass through; the second central hole and the first central hole being in communication, a bottom portion of the support member being provided with a limiting portion, the limiting portion being located in the first central hole, the limiting portion being used for abutting against a lower surface of the bottom plate to limit upward movement of the support member along the height direction; a second connecting portion located below the first connecting portion, a part of the second connecting portion being embedded in the first central hole of the first connecting portion, the second connecting portion being used for abutting against the limiting portion to limit downward movement of the support member along the height direction; a first fixing member fixedly connecting the second connecting portion, the first connecting portion and the bottom plate. The first connecting portion is provided with a plurality of avoiding grooves extending along the radial direction, the plurality of avoiding grooves corresponding to the plurality of sliding grooves one by one and being oppositely arranged along the height direction.

10. The fixture of claim 9, wherein, ​

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